Update .gitattributes

autoexec default was created at the wrong place!

.gitattributes

@@ -1,5 +1,5 @@
 # Auto detect text files and perform LF normalization
-* text=auto
+# * text=auto
 
 # Custom for Visual Studio
 *.cs     diff=csharp

.github/workflows/Platform_build.yml

@@ -88,7 +88,7 @@ jobs:
         git commit -m "Update prebuilt objects [skip actions]"
         git push  https://${{secrets.github_token}}@github.com/sle118/squeezelite-esp32.git
     - name: Locally store commonly built objects
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: prebuilt_objects
         path: |
@@ -130,7 +130,7 @@ jobs:
         git status
         build_tools.py environment --build ${{ needs.bootstrap.outputs.build_number }} --env_file "$GITHUB_ENV" --node "${{matrix.node}}" --depth ${{matrix.depth}} --major 2 --docker sle118/squeezelite-esp32-idfv435 
         
-    - uses: actions/download-artifact@master
+    - uses: actions/download-artifact@v4
       name: Restore common objects
       with:
         name: prebuilt_objects
@@ -171,7 +171,7 @@ jobs:
             zip build/${artifact_file_name} partitions*.csv components/ build/*.bin build/bootloader/bootloader.bin build/partition_table/partition-table.bin build/flash_project_args build/size_*.txt
         fi
     - name: Upload Build Artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: ${{ needs.bootstrap.outputs.mock == 0 }}
       with:
         name: ${{ env.artifact_prefix }}

CHANGELOG

@@ -1,3 +1,91 @@
+2025-02-17
+ - reverse some checks on display not NULL in gds.c. As it is about being fast, I'd prefer the caller to know that there is no display and don't call. I'm sure I have missed something when there is only led_vu and no display, but people will remind me soon enough :-)
+
+2024-09-28
+ - add dedicated volume encoder
+ - fix memory leak in rotary config creation
+ 
+2024-09-28
+ - create autoexec NVS entry at the right place (not only whne BT is enabled!
+ - try to make i2s panic mode work for all esp versions
+
+2024-09-12
+- add AW9523 GPIO expander credits @Stefan Krupop (https://github.com/sle118/squeezelite-esp32/pull/430
+
+2024-09-10
+- Merge pull request # 439 from digidocs/eq_update_fix2 (# 309)
+- Fix for I2S noise burst when ESP32 panic occurs (# 437)
+
+2024-05-05
+ - Fix crash when led_vu is configured without display
+2024-01-27
+ - complete libflac fix and add chaining enablement
+ - fixed stream Ogg demux issue with unknown granule
+ 
+2024-01-19
+ - fixed libflac with OggFlac
+ - AirPlay missed frame logging
+ 
+2024-01-16
+ - catch-up with cspot latest
+ - refactor airplay flush/first packet
+ - new libFLAC that supports multi-stream OggFlac
+ - fix output threshold
+ - log missed frames
+ 
+2024-01-10
+ - add OggFlac to stream metadata
+ - fix OggFlac deadlock in flac callback when not enough data in streambuf
+ - fix no displayer due to threadshold too high (use 500ms instead)
+ - reset outputbuf when cspot starts
+ 
+2024-01-01
+ - ogg stream are parsed to foward metadata to LMS
+ - fix some ogg parsing on multi-stream containers
+ 
+2023-11-19
+ - more robust (?) airplay RTP frame recovery
+ - initialize of scratch string in monitor (trying to figure out random reboot)
+
+2023-11-16
+ - add SH1122 support
+ - optimize GDS DrawPixel function
+ 
+2023-11-09
+ - force gpio_pad_select_gpio in dac_controlset in case somebody uses UART gpio's (or other pre-programmed)
+ 
+2023-11-08
+ - execute dac_controlset even when there is no i2s (for gpio)
+ 
+2023-11-07
+ - led-vu gain + misc fixes
+ - bump plugin version to 0.600
+ 
+2023-11-03
+ - don't reboot when external decoder is connected even with a LMS server
+ 
+2023-10-28
+ - fix recovery size (remove bootstrap)
+ - improve NVS initialization structure
+
+2023-10-27
+ - fix vorbis (and opus) memory leak
+ 
+2023-10-25
+ - fix vorbis codec close
+
+2023-10-23
+ - fix Spotify track insertion
+ - [WEB] Allow running without LMS with option "Audio/Disable Squeezelite"
+
+2023-10.07
+ - catchup with official cspot
+ 
+2023-10-06
+ - fix cspot PREV on first track, NEXT on last track and normal ending
+ - use DMA_AUTO for SPI
+ - cspot share same time log
+ 
 2023-10-06
  - Fix bootswatch bug that caused difficult to read UI ( issue #319)
 

CMakeLists.txt

@@ -73,7 +73,7 @@ set_target_properties(recovery.elf PROPERTIES LINK_LIBRARIES "${BCA};idf::app_re
 # build squeezelite, add app_squeezelite to the link
 add_executable(squeezelite.elf "CMakeLists.txt")
 add_dependencies(squeezelite.elf recovery.elf)
-set_target_properties(squeezelite.elf PROPERTIES LINK_LIBRARIES "${BCA};idf::app_squeezelite;-Wl,--Map=${BUILD_DIR}/squeezelite.map")
+set_target_properties(squeezelite.elf PROPERTIES LINK_LIBRARIES "${BCA};idf::app_squeezelite;-Wl,--Map=${BUILD_DIR}/squeezelite.map,--wrap=esp_panic_handler")
 add_custom_command(
 			TARGET squeezelite.elf
 			POST_BUILD 
@@ -228,4 +228,4 @@ endif()
 # target_compile_definitions(__idf_wear_levelling PRIVATE -DLOG_LOCAL_LEVEL=ESP_LOG_DEBUG)
 # target_compile_definitions(__idf_wifi_provisioning PRIVATE -DLOG_LOCAL_LEVEL=ESP_LOG_DEBUG)
 # target_compile_definitions(__idf_wpa_supplicant PRIVATE -DLOG_LOCAL_LEVEL=ESP_LOG_DEBUG)
-# target_compile_definitions(__idf_xtensa PRIVATE -DLOG_LOCAL_LEVEL=ESP_LOG_DEBUG)
+# target_compile_definitions(__idf_xtensa PRIVATE -DLOG_LOCAL_LEVEL=ESP_LOG_DEBUG)

Dockerfile

@@ -25,7 +25,11 @@ ENV GCC_TOOLS_BASE=/opt/esp/tools/xtensa-esp32-elf/esp-2021r2-patch3-8.4.0/xtens
 # pushd components/wifi-manager/webapp/ && npm install && npm run-script build && popd
 #
 # to run the docker with netwotrk port published on the host:
+# (windows)
 # docker run --rm -p 5000:5000/tcp -v %cd%:/project -w /project -it sle118/squeezelite-esp32-idfv435
+# (linux)
+# docker run --rm -p 5000:5000/tcp -v `pwd`:/project -w /project -it sle118/squeezelite-esp32-idfv435
+
 
 ARG IDF_CLONE_URL=https://github.com/espressif/esp-idf.git
 ARG IDF_CLONE_BRANCH_OR_TAG=master

README.md

@@ -1,6 +1,7 @@
 [![Platform Build](https://github.com/sle118/squeezelite-esp32/actions/workflows/Platform_build.yml/badge.svg)](https://github.com/sle118/squeezelite-esp32/actions/workflows/Platform_build.yml)
 # Squeezelite-esp32
-
+## Forewords
+**More and more people seems to use this without a LMS server, just for BT, AirPlay or Spotify. It's fine but understand that squeezeliteESP32 is primarily a Logitech Media Server player and has been designed around that concept. All the others are add-ons stitched to it, so other modes have their shortcomings. So please make sure you read [this](#Additional-configuration-notes-from-the-Web-UI) before opening an issue**
 ## What is this?
 Squeezelite-esp32 is an audio software suite made to run on espressif's esp32 and esp32-s3 wifi (b/g/n) and bluetooth chipsets. It offers the following capabilities
 
@@ -14,6 +15,7 @@ Depending on the hardware connected to the esp32, you can send audio to a local
 But squeezelite-esp32 is highly extensible and you can add
 
 - [Buttons](#buttons) and [Rotary Encoder](#rotary-encoder) and map/combine them to various functions (play, pause, volume, next ...)
+- [Volume Encoder](#volume-rotary-encoder) for a dedicated volume rotary encoder
 - [GPIO expander](#gpio-expanders) (buttons, led and rotary)
 - [IR receiver](#infrared) (no pullup resistor or capacitor needed, just the 38kHz receiver)
 - [Monochrome, GrayScale or Color displays](#display) using SPI or I2C (supported drivers are SH1106, SSD1306, SSD1322, SSD1326/7, SSD1351, ST7735, ST7789 and ILI9341).
@@ -186,15 +188,23 @@ bck=<gpio>,ws=<gpio>,do=<gpio>[,mck=0|1|2][,mute=<gpio>[:0|1][,model=TAS57xx|TAS
 ```
 if "model" is not set or is not recognized, then default "I2S" is used. The option "mck" is used for some codecs that require a master clock (although they should not). By default GPIO0 is used as MCLK and only recent builds (post mid-2023) can use 1 or 2. Also be aware that this cannot coexit with RMII Ethernet (see ethernet section below). I2C parameters are optional and only needed if your DAC requires an I2C control (See 'dac_controlset' below). Note that "i2c" parameters are decimal, hex notation is not allowed.
 
-So far, TAS57xx, TAS5713, AC101, WM8978 and ES8388 are recognized models where the proper init sequence/volume/power controls are sent. For other codecs that might require an I2C commands, please use the parameter "dac_controlset" that allows definition of simple commands to be sent over i2c for init, power, speakder and headset on and off using a JSON syntax:
+So far, TAS57xx, TAS5713, AC101, WM8978 and ES8388 are recognized models where the proper init sequence/volume/power controls are sent. For other codecs that might require an I2C commands, please use the parameter "dac_controlset" that allows definition of simple commands to be sent over i2c for init, power, speaker and headset on and off using a JSON syntax:
 ```json
-{ <command>: [ {"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"}, ... {{"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"} ],
-  <command>: [ {"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"}, ... {{"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"} ],
+{ <command>: [ <item1>, <item2>, ... <item3> ],
+  <command>: [ <item1>, <item2>, ... <item3> ],
   ... }
 ```
-Where `<command>` is one of init, poweron, poweroff, speakeron, speakeroff, headseton, headsetoff
+Where `<command>` is one of init, poweron, poweroff, speakeron, speakeroff, headseton, headsetoff (it **must** be an array even for a single item). Item is any of the following elements
+```
+{"reg":<register>,"val":<value>,"mode":<nothing>|"or"|"and"}
+{"gpio":<gpio>,"level":0|1}
+{"delay":<ms>}
+```
+This is standard JSON notation, so if you are not familiar with it, Google is your best friend. Be aware that the '...' means you can have as many entries as you want, it's not part of the syntax. Every section is optional, but it does not make sense to set i2c in the 'dac_config' parameter and not setting anything here. 
 
-This is standard JSON notation, so if you are not familiar with it, Google is your best friend. Be aware that the '...' means you can have as many entries as you want, it's not part of the syntax. Every section is optional, but it does not make sense to set i2c in the 'dac_config' parameter and not setting anything here. The parameter 'mode' allows to *or* the register with the value or to *and* it. Don't set 'mode' if you simply want to write. The 'val parameter can be an array [v1, v2,...] to write a serie of bytes in a single i2c burst (in that case 'mode' is ignored). **Note that all values must be decimal**. You can use a validator like [this](https://jsonlint.com) to verify your syntax
+The `reg` key allow to write registers on i2c bus. The parameter `mode` allows to *or* the register with the value or to *and* it. Don't set `mode` if you simply want to write. The `val` parameter can be an array [v1, v2,...] to write a serie of bytes in a single i2c burst (in that case 'mode' is ignored). **Note that all values must be decimal**. You can use a validator like [this](https://jsonlint.com) to verify your syntax. The `gpio` key is simply to set a gpio as part of DAC action and `delay` allows a pause between elements.
+
+The 'power' command is used when powering on/off the DAC after the idle period (see -C option of squeezelite) and the 'speaker/headset' commands are sent when switching between speakers and headsets (see headset jack detection).
 
 NB: For named configurations ((SqueezeAMP, Muse ... all except I2S), all this is ignored. For know codecs, the built-in sequences can be overwritten using dac_controlset
 
@@ -274,7 +284,7 @@ GPIO can be set to GND provide or Vcc at boot. This is convenient to power devic
 
 The `<amp>` parameter can use used to assign a GPIO that will be set to active level (default 1) when playback starts. It will be reset when squeezelite becomes idle. The idle timeout is set on the squeezelite command line through `-C <timeout>`
 
-The `<power>` parameter can use used to assign a GPIO that will be set to active level (default 1) when player is powered on and reset when powered off
+The `<power>` parameter can use used to assign a GPIO that will be set to active level (default 1) when player is powered on and reset when powered off (in LMS, does not apply to AirPlay, Spotify or BT).
 
 If you have an audio jack that supports insertion (use :0 or :1 to set the level when inserted), you can specify which GPIO it's connected to. Using the parameter jack_mutes_amp allows to mute the amp when headset (e.g.) is inserted.
 
@@ -299,7 +309,7 @@ The parameter "gpio_exp_config" is a semicolon (;) separated list with following
 ```
 model=<model>,addr=<addr>,[,port=system|dac][,base=<n>][,count=<n>][,intr=<gpio>][,cs=<gpio>][,speed=<Hz>]
 ```	
-- model: pca9535, pca85xx, mcp23017 and mcp23s17 (SPI version)
+- model: pca9535, pca85xx, mcp23017, aw9523 and mcp23s17 (SPI version)
 - addr: chip i2c/spi address (decimal)
 - port (I2C): use either "system" port (shared with display for example) or "dac" port (system is default)
 - cs (SPI): gpio used for Chip Select
@@ -318,23 +328,23 @@ See [set_GPIO](#set-gpio) for how to set the green and red LEDs (including addre
 NB: For named configuration, GPIO affected to green and red LED cannot be changed but brightness option applies
 
 ### LED Strip
-One LED strip with up to 255 addressable LEDs can be configured to offer enhanced visualizations.  The LED strip can also be controlled remotely though the LMS server (using the CLI interface).  Currently only WS2812B LEDs are supported.  Set the LED Strip configuration (or NVS led_vu_config) to `WS2812,length=<n>,gpio=<gpio>, where <n> is the number of leds in the strip (1..255), and <gpio> is the data pin.`  
-
-The latest LMS plugin update is required to set the visualizer mode and brightness, in the ESP32 settings page for the player.  The plugin also adds the following CLI command options
+One LED strip with up to 255 addressable LEDs can be configured to offer enhanced visualizations.  The VU Meter visualizer includes a battery status indicator (see Battery).  Currently only WS2812B LEDs are supported.  Set the LED Strip hardware configuration, or the NVS led_vu_config syntax is 
 ```
-<playerid> led_visual [<mode>] [brightness(1-255)]
-  Toggles or selects the visulaizer mode.
-  The visualizer brighness can be controled using the optional <brighness> tag.
-
-<playerid> dmx <R,G,B|R,G,B,R,G,B ... R,G,B> [<offset>]
-  Sets the LED at position "offset" to any RGB color where "R"(red),"G"(green), and "B"(blue) are values from 0(off) to 255(max brightness).
-  Add additional RGB values to the delimited string to set multiple LEDs. 
+type=[WS2812],length=<n>,gpio=<dataPin>[,scale=<gain>]
 ```
+where `<n>` is the number of LEDs in the strip (1..255).  A `<scale>` gain value (percentage) can be added to enhance effect responses. 
+
+The latest LMS plugin update is required to set the visualizer mode and brightness in the ESP32 Settings page for the player, or a controllable display (see Extra/SqueezeESP32 menus).  The plugin adds additional LMS CLI commands.
+
+| Command                                            | Notes       |
+| -------------------------------------------------- | ----------- |
+| \<playerid\> led_visual \[\<mode\>\] \[\<brightness\>\] | Toggles or selects the visualizer "mode".<br />The visualizer brightness(0..255) can be controlled using the "brightness" tag. |
+| \<playerid\> dmx \<R,G,B,R,G,B, ... R,G,B\> \[\<offset\>\] | Sets the LED color starting at position "offset"<br />  with "R"(red),"G"(green),and "B"(blue) color sequences.<br />Add additional RGB values to the delimited string to set multiple LEDs.<br /> |
 
 ### Rotary Encoder
-One rotary encoder is supported, quadrature shift with press. Such encoders usually have 2 pins for encoders (A and B), and common C that must be set to ground and an optional SW pin for press. A, B and SW must be pulled up, so automatic pull-up is provided by ESP32, but you can add your own resistors. A bit of filtering on A and B (~470nF) helps for debouncing which is not made by software. 
+One general rotary encoder is supported, quadrature shift with press. Such encoders usually have 2 pins for encoders (A and B), and common C that must be set to ground and an optional SW pin for press. A, B and SW must be pulled up, so automatic pull-up is provided by ESP32, but you can add your own resistors. A bit of filtering on A and B (~470nF) helps for debouncing which is not made by software. 
 
-Encoder is normally hard-coded to respectively knob left, right and push on LMS and to volume down/up/play toggle on BT and AirPlay. Using the option 'volume' makes it hard-coded to volume down/up/play toggle all the time (even in LMS). The option 'longpress' allows an alternate mode when SW is long-pressed. In that mode, left is previous, right is next and press is toggle. Every long press on SW alternates between modes (the main mode actual behavior depends on 'volume').
+Encoder is normally hard-coded to respectively knob left, right and push on LMS and to volume down/up/play toggle on BT, AirPlay and Spotify. Using the option 'volume' makes it hard-coded to volume down/up/play toggle all the time (even in LMS). The option 'longpress' allows an alternate mode when SW is long-pressed. In that mode, left is previous, right is next and press is toggle. Every long press on SW alternates between modes (the main mode actual behavior depends on 'volume').
 
 There is also the possibility to use 'knobonly' option (exclusive with 'volume' and 'longpress'). This mode attempts to offer a single knob full navigation which is a bit contorded due to LMS UI's principles. Left, Right and Press obey to LMS's navigation rules and especially Press always goes to lower submenu item, even when navigating in the Music Library. That causes a challenge as there is no 'Play', 'Back' or 'Pause' button. Workaround are as of below:
 - longpress is 'Play'
@@ -355,7 +365,16 @@ The SW gpio is optional, you can re-affect it to a pure button if you prefer but
 
 See also the "IMPORTANT NOTE" on the "Buttons" section and remember that when 'lms_ctrls_raw' (see below) is activated, none of these knobonly,volume,longpress options apply, raw button codes (not actions) are simply sent to LMS
 
-**Note that gpio 36 and 39 are input only and cannot use interrupt, so they cannot be set to A or B. When using them for SW, a 100ms polling is used which is expensive**
+**Note that on esp32, gpio 36 and 39 are input only and cannot use interrupt, so they cannot be set to A or B. When using them for SW, a 100ms polling is used which is expensive**
+
+### Volume Rotary Encoder
+One dedicated volume rotary encoder is supported, quadrature shift with press. Encoder is hard-coded to volume-up, down and play toggle for LMS, BT, AirPlay and Spotify (see note above for filtering and HW note as well GPIO 36 and 39 on esp32)
+
+Use parameter volume_rotary with the following syntax:
+
+```
+A=<gpio>,B=<gpio>[,SW=gpio>]
+```
 
 ### Buttons
 Buttons are described using a JSON string with the following syntax
@@ -623,12 +642,20 @@ docker run -it -v `pwd`:/workspace/squeezelite-esp32 sle118/squeezelite-esp32-id
 The above command will mount this repo into the docker container and start a bash terminal. From there, simply run idf.py build to build, etc. Note that at the time of writing these lines, flashing is not possible for docker running under windows https://github.com/docker/for-win/issues/1018.
 
 ### Manual Install of ESP-IDF
-You can install IDF manually on Linux or Windows (using the Subsystem for Linux) following the instructions at: https://www.instructables.com/id/ESP32-Development-on-Windows-Subsystem-for-Linux/ or see here https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/windows-setup.html for a direct install. You also need a few extra Python libraries for cspot by addingsudo `pip3 install protobuf grpcio-tools`
-
-**Use the esp-idf 4.3.5 https://github.com/espressif/esp-idf/tree/release/v4.3.5 ** or the 4.4.5 (and above version) if you want to build for esp32-s3
+First you need git and python (e.g 3.10.x), install these and let it add to system path.
 
+**Use the esp-idf 4.3.5 https://github.com/espressif/esp-idf/tree/release/v4.3.5 ** or the 4.4.5 (and above version) if you want to build for esp32-s3. You should clone recursively the whole branch (at the version you need) `git clone -b v4.3.5 https://github.com/espressif/esp-idf --recursive`and run the installer (`install.bat [esp32[,esp32s3]]` from there. Some Windows version (at least) have now a SSL certificate issue. You can workaround this by editing idf-tools.py and adding the following under ìmport ssl`
+```
+import ssl
+ssl._create_default_https_context = ssl._create_unverified_context
+```
+And because the fun never ends, some Windows installations might fail to build a few files and spit a tons of errors on the output. It seems that the cache of the compile is a problem, so try to disable it by running `idf.py --no-ccache build` (I know...)
 ## Building SqueezeESP32
-When initially cloning the repo, make sure you do it recursively. For example: `git clone --recursive https://github.com/sle118/squeezelite-esp32.git`
+When initially cloning the repo, make sure you do it recursively. For example: `git clone --recursive https://github.com/sle118/squeezelite-esp32.git`. You also should install cspot additional components for protobuf use.
+```
+$ sudo pip3 install protobuf grpcio-tools
+```
+NB: I need to check on a fresh installation, but you might also require "protoc". You should do that within the esp32 local Python environment.
 	
 Don't forget to choose one of the config files in build_scripts/ and rename it sdkconfig.defaults or sdkconfig as many important WiFi/BT options are set there. **The codecs libraries will not be rebuilt by these scripts (it's a tedious process - see below)**
 

components/codecs/inc/FLAC/stream_decoder.h

@@ -1,6 +1,6 @@
 /* libFLAC - Free Lossless Audio Codec library
  * Copyright (C) 2000-2009  Josh Coalson
- * Copyright (C) 2011-2022  Xiph.Org Foundation
+ * Copyright (C) 2011-2023  Xiph.Org Foundation
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -782,6 +782,25 @@ FLAC_API void FLAC__stream_decoder_delete(FLAC__StreamDecoder *decoder);
  */
 FLAC_API FLAC__bool FLAC__stream_decoder_set_ogg_serial_number(FLAC__StreamDecoder *decoder, long serial_number);
 
+/** Set the "allow Ogg chaining" flag. If set, the Ogg decoder will
+ *  prepare to receive a new stream once the last Ogg page arrives for
+ *  the stream encapsulating the FLAC audio data. This can be used to
+ *  support chained Ogg FLAC streams; a new \c STREAMINFO signals the
+ *  beginning of a new stream.
+ *
+ * \note
+ * This function has no effect with native FLAC decoding.
+ *
+ * \default \c false
+ * \param  decoder          A decoder instance to set.
+ * \param  allow            Whether to allow chained streams.
+ * \assert
+ *    \code decoder != NULL \endcode
+ * \retval FLAC__bool
+ *    \c false if the decoder is already initialized, else \c true.
+ */
+FLAC_API FLAC__bool FLAC__stream_decoder_set_ogg_chaining(FLAC__StreamDecoder* decoder, FLAC__bool value);
+
 /** Set the "MD5 signature checking" flag.  If \c true, the decoder will
  *  compute the MD5 signature of the unencoded audio data while decoding
  *  and compare it to the signature from the STREAMINFO block, if it
@@ -906,6 +925,17 @@ FLAC_API FLAC__StreamDecoderState FLAC__stream_decoder_get_state(const FLAC__Str
  */
 FLAC_API const char *FLAC__stream_decoder_get_resolved_state_string(const FLAC__StreamDecoder *decoder);
 
+/** Get the "allow Ogg chaining" flag as described in
+ *  \code FLAC__stream_decoder_set_ogg_chaining \endcode.
+ *
+ * \param  decoder  A decoder instance to query.
+ * \assert
+ *    \code decoder != NULL \endcode
+ * \retval FLAC__bool
+ *    See above.
+ */
+FLAC_API FLAC__bool FLAC__stream_decoder_get_ogg_chaining(const FLAC__StreamDecoder* decoder);
+
 /** Get the "MD5 signature checking" flag.
  *  This is the value of the setting, not whether or not the decoder is
  *  currently checking the MD5 (remember, it can be turned off automatically

components/display/SH1122.c

@@ -0,0 +1,176 @@
+/**
+ * Copyright (c) 2017-2018 Tara Keeling
+ *				 2020 Philippe G.
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <esp_heap_caps.h>
+#include <esp_log.h>
+
+#include "gds.h"
+#include "gds_private.h"
+
+#define SHADOW_BUFFER
+#define PAGE_BLOCK	1024
+
+#define min(a,b) (((a) < (b)) ? (a) : (b))
+
+static char TAG[] = "SH1122";
+
+struct PrivateSpace {
+	uint8_t *iRAM, *Shadowbuffer;
+	uint8_t PageSize;
+};
+
+// Functions are not declared to minimize # of lines
+
+static void SetColumnAddress( struct GDS_Device* Device, uint8_t Start, uint8_t End ) {
+    Device->WriteCommand( Device, 0x10 | (Start >> 4) );
+	Device->WriteCommand( Device, 0x00 | (Start & 0x0f) );
+}
+
+static void SetRowAddress( struct GDS_Device* Device, uint8_t Start, uint8_t End ) {
+	Device->WriteCommand( Device, 0xB0 );
+	Device->WriteCommand( Device, Start );
+}
+
+static void Update( struct GDS_Device* Device ) {
+	struct PrivateSpace *Private = (struct PrivateSpace*) Device->Private;
+		
+	// RAM is by columns of 4 pixels ...
+	SetColumnAddress( Device, 0, Device->Width / 4 - 1);
+	
+#ifdef SHADOW_BUFFER
+	uint16_t *optr = (uint16_t*) Private->Shadowbuffer, *iptr = (uint16_t*) Device->Framebuffer;
+	bool dirty = false;
+	
+	for (int r = 0, page = 0; r < Device->Height; r++) {
+		// look for change and update shadow (cheap optimization = width always / by 2)
+		for (int c = Device->Width / 2 / 2; --c >= 0;) {
+			if (*optr != *iptr) {
+				dirty = true;
+				*optr = *iptr;
+			}
+			iptr++; optr++;
+		}
+		
+		// one line done, check for page boundary
+		if (++page == Private->PageSize) {
+			if (dirty) {
+				SetRowAddress( Device, r - page + 1, r );
+                if (Private->iRAM) {
+                    memcpy(Private->iRAM, Private->Shadowbuffer + (r - page + 1) * Device->Width / 2, page * Device->Width / 2 );
+                    Device->WriteData( Device, Private->iRAM, Device->Width * page / 2 );
+                } else {
+                    Device->WriteData( Device, Private->Shadowbuffer + (r - page + 1) * Device->Width / 2, page * Device->Width / 2);
+                }    
+				dirty = false;
+			}	
+			page = 0;
+		}	
+	}	
+#else
+    SetRowAddress( Device, 0, Device->Height - 1 );
+	for (int r = 0; r < Device->Height; r += Private->PageSize) {
+		if (Private->iRAM) {
+			memcpy(Private->iRAM, Device->Framebuffer + r * Device->Width / 2, Private->PageSize * Device->Width / 2 );
+			Device->WriteData( Device, Private->iRAM, Private->PageSize * Device->Width / 2 );
+		} else	{
+			Device->WriteData( Device, Device->Framebuffer + r * Device->Width / 2, Private->PageSize * Device->Width / 2 );
+		}	
+	}	
+#endif	
+}
+
+static void SetLayout( struct GDS_Device* Device, struct GDS_Layout *Layout ) { 
+    if (Layout->HFlip) {
+        Device->WriteCommand( Device, 0x40 + 0x20 );
+        Device->WriteCommand( Device, 0xA1 );
+    } else {
+        Device->WriteCommand( Device, 0x40 + 0x00 );
+        Device->WriteCommand( Device, 0xA0 );
+    }
+	Device->WriteCommand( Device, Layout->VFlip ? 0xC8 : 0xC0 );
+    Device->WriteCommand( Device, Layout->Invert ? 0xA7 : 0xA6 );
+}	
+
+static void DisplayOn( struct GDS_Device* Device ) { Device->WriteCommand( Device, 0xAF ); }
+static void DisplayOff( struct GDS_Device* Device ) { Device->WriteCommand( Device, 0xAE ); }
+
+static void SetContrast( struct GDS_Device* Device, uint8_t Contrast ) {
+    Device->WriteCommand( Device, 0x81 );
+    Device->WriteCommand( Device, Contrast );
+}
+
+static bool Init( struct GDS_Device* Device ) {
+	struct PrivateSpace *Private = (struct PrivateSpace*) Device->Private;
+	
+	// find a page size that is not too small is an integer of height
+	Private->PageSize = min(8, PAGE_BLOCK / (Device->Width / 2));
+	while (Private->PageSize && Device->Height != (Device->Height / Private->PageSize) * Private->PageSize) Private->PageSize--;
+	
+#ifdef SHADOW_BUFFER	
+	Private->Shadowbuffer = malloc( Device->FramebufferSize );	
+	memset(Private->Shadowbuffer, 0xFF, Device->FramebufferSize);
+#endif
+
+    // only use iRAM for SPI
+    if (Device->IF == GDS_IF_SPI) {
+        Private->iRAM = heap_caps_malloc( Private->PageSize * Device->Width / 2, MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA );
+    }
+
+	ESP_LOGI(TAG, "SH1122 page %u, iRAM %p", Private->PageSize, Private->iRAM);
+			
+	// need to be off and disable display RAM
+	Device->DisplayOff( Device );
+    Device->WriteCommand( Device, 0xA5 );
+	
+	// Display Offset
+    Device->WriteCommand( Device, 0xD3 );
+    Device->WriteCommand( Device, 0 );
+    
+ 	// set flip modes
+	struct GDS_Layout Layout = { };
+	Device->SetLayout( Device, &Layout );
+    	
+	// set Clocks => check value
+    Device->WriteCommand( Device, 0xD5 );
+    Device->WriteCommand( Device, ( 0x04 << 4 ) | 0x00 );
+	
+	// MUX Ratio => fixed
+    Device->WriteCommand( Device, 0xA8 );
+    Device->WriteCommand( Device, Device->Height - 1);
+			
+	// no Display Inversion
+    Device->WriteCommand( Device, 0xA6 );
+	
+	// gone with the wind
+	Device->WriteCommand( Device, 0xA4 );
+	Device->DisplayOn( Device );
+	Device->Update( Device );
+	
+	return true;
+}	
+
+static const struct GDS_Device SH1122 = {
+	.DisplayOn = DisplayOn, .DisplayOff = DisplayOff, .SetContrast = SetContrast,
+	.SetLayout = SetLayout,
+	.Update = Update, .Init = Init,
+	.Mode = GDS_GRAYSCALE, .Depth = 4,
+    .HighNibble = true,
+};	
+
+struct GDS_Device* SH1122_Detect(char *Driver, struct GDS_Device* Device) {
+	if (!strcasestr(Driver, "SH1122")) return NULL;
+		
+	if (!Device) Device = calloc(1, sizeof(struct GDS_Device));
+	*Device = SH1122;
+
+	return Device;
+}

components/display/SSD1322.c

@@ -71,8 +71,8 @@ static void Update( struct GDS_Device* Device ) {
 			if (dirty) {
 				uint16_t *optr = (uint16_t*) Private->iRAM, *iptr = (uint16_t*) (Private->Shadowbuffer + (r - page + 1) * Device->Width / 2);
 				SetRowAddress( Device, r - page + 1, r );
+                // need byte swapping
 				for (int i = page * Device->Width / 2 / 2; --i >= 0; iptr++) *optr++ = (*iptr >> 8) | (*iptr << 8);
-				//memcpy(Private->iRAM, Private->Shadowbuffer + (r - page + 1) * Device->Width / 2, page * Device->Width / 2 );
 				Device->WriteCommand( Device, 0x5c );
 				Device->WriteData( Device, Private->iRAM, Device->Width * page / 2 );
 				dirty = false;
@@ -84,14 +84,10 @@ static void Update( struct GDS_Device* Device ) {
 	for (int r = 0; r < Device->Height; r += Private->PageSize) {
 		SetRowAddress( Device, r, r + Private->PageSize - 1 );
 		Device->WriteCommand( Device, 0x5c );
-		if (Private->iRAM) {
-			uint16_t *optr = (uint16_t*) Private->iRAM, *iptr = (uint16_t*) (Device->Framebuffer + r * Device->Width / 2);
-			for (int i = Private->PageSize * Device->Width / 2 / 2; --i >= 0; iptr++) *optr++ = (*iptr >> 8) | (*iptr << 8);
-			//memcpy(Private->iRAM, Device->Framebuffer + r * Device->Width / 2, Private->PageSize * Device->Width / 2 );
-			Device->WriteData( Device, Private->iRAM, Private->PageSize * Device->Width / 2 );
-		} else	{
-			Device->WriteData( Device, Device->Framebuffer + r * Device->Width / 2, Private->PageSize * Device->Width / 2 );
-		}	
+        // need byte swapping
+		uint16_t *optr = (uint16_t*) Private->iRAM, *iptr = (uint16_t*) (Device->Framebuffer + r * Device->Width / 2);
+		for (int i = Private->PageSize * Device->Width / 2 / 2; --i >= 0; iptr++) *optr++ = (*iptr >> 8) | (*iptr << 8);
+		Device->WriteData( Device, Private->iRAM, Private->PageSize * Device->Width / 2 );
 	}	
 #endif	
 }

components/display/core/gds.c

@@ -109,7 +109,7 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
 				int c = x1;
 				// for a row that is not on a boundary, no optimization possible
 				while (r & 0x07 && r <= y2) {
-					for (c = x1; c <= x2; c++) DrawPixelFast( Device, c, r, Color );
+					for (c = x1; c <= x2; c++) Device->DrawPixelFast( Device, c, r, Color );
 					r++;
 				}
 				// go fast if we have more than 8 lines to write
@@ -117,7 +117,7 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
 					memset(optr + Width * r + x1, _Color, x2 - x1 + 1);
 					r += 8;
 				} else while (r <= y2) {
-					for (c = x1; c <= x2; c++) DrawPixelFast( Device, c, r, Color );
+					for (c = x1; c <= x2; c++) Device->DrawPixelFast( Device, c, r, Color );
 					r++;
 				}
 			}
@@ -133,10 +133,10 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
 			// try to do byte processing as much as possible
 			for (int r = y1; r <= y2; r++) {
 				int c = x1;
-				if (c & 0x01) DrawPixelFast( Device, c++, r, Color);
+				if (c & 0x01) Device->DrawPixelFast( Device, c++, r, Color);
 				int chunk = (x2 - c + 1) >> 1;
 				memset(optr + ((r * Width + c)  >> 1), _Color, chunk);
-				if (c + chunk <= x2) DrawPixelFast( Device, x2, r, Color);
+				if (c + chunk <= x2) Device->DrawPixelFast( Device, x2, r, Color);
 			}
 		}	
 	} else if (Device->Depth == 8) {
@@ -148,7 +148,7 @@ void GDS_ClearWindow( struct GDS_Device* Device, int x1, int y1, int x2, int y2,
 	} else {
 		for (int y = y1; y <= y2; y++) {
 			for (int x = x1; x <= x2; x++) {
-				DrawPixelFast( Device, x, y, Color);
+				Device->DrawPixelFast( Device, x, y, Color);
 			}
 		}
 	}
@@ -171,10 +171,76 @@ bool GDS_Reset( struct GDS_Device* Device ) {
     return true;
 }
 
+static void IRAM_ATTR DrawPixel1Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
+    uint32_t YBit = ( Y & 0x07 );
+    uint8_t* FBOffset;
+
+    /* 
+     * We only need to modify the Y coordinate since the pitch
+     * of the screen is the same as the width.
+     * Dividing Y by 8 gives us which row the pixel is in but not
+     * the bit position.
+     */
+    Y>>= 3;
+
+    FBOffset = Device->Framebuffer + ( ( Y * Device->Width ) + X );
+
+    if ( Color == GDS_COLOR_XOR ) {
+        *FBOffset ^= BIT( YBit );
+    } else {
+        *FBOffset = ( Color == GDS_COLOR_BLACK ) ? *FBOffset & ~BIT( YBit ) : *FBOffset | BIT( YBit );
+    }
+}
+
+static void IRAM_ATTR DrawPixel4Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
+	uint8_t* FBOffset = Device->Framebuffer + ( (Y * Device->Width >> 1) + (X >> 1));
+	*FBOffset = X & 0x01 ? (*FBOffset & 0x0f) | ((Color & 0x0f) << 4) : ((*FBOffset & 0xf0) | (Color & 0x0f));
+}
+
+static void IRAM_ATTR DrawPixel4FastHigh( struct GDS_Device* Device, int X, int Y, int Color ) {
+    uint8_t* FBOffset = Device->Framebuffer + ( (Y * Device->Width >> 1) + (X >> 1));
+	*FBOffset = X & 0x01 ? ((*FBOffset & 0xf0) | (Color & 0x0f)) : (*FBOffset & 0x0f) | ((Color & 0x0f) << 4);
+}
+
+static void IRAM_ATTR DrawPixel8Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
+	Device->Framebuffer[Y * Device->Width + X] = Color;
+}
+
+// assumes that Color is 16 bits R..RG..GB..B from MSB to LSB and FB wants 1st serialized byte to start with R
+static void IRAM_ATTR DrawPixel16Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
+	uint16_t* FBOffset = (uint16_t*) Device->Framebuffer + Y * Device->Width + X;
+	*FBOffset = __builtin_bswap16(Color);
+}
+
+// assumes that Color is 18 bits RGB from MSB to LSB RRRRRRGGGGGGBBBBBB, so byte[0] is B 
+// FB is 3-bytes packets and starts with R for serialization so 0,1,2 ... = xxRRRRRR xxGGGGGG xxBBBBBB 
+static void IRAM_ATTR DrawPixel18Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
+	uint8_t* FBOffset = Device->Framebuffer + (Y * Device->Width + X) * 3;
+	*FBOffset++ = Color >> 12; *FBOffset++ = (Color >> 6) & 0x3f; *FBOffset = Color & 0x3f;
+}
+
+// assumes that Color is 24 bits RGB from MSB to LSB RRRRRRRRGGGGGGGGBBBBBBBB, so byte[0] is B 
+// FB is 3-bytes packets and starts with R for serialization so 0,1,2 ... = RRRRRRRR GGGGGGGG BBBBBBBB 
+static void IRAM_ATTR DrawPixel24Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
+	uint8_t* FBOffset = Device->Framebuffer + (Y * Device->Width + X) * 3;
+	*FBOffset++ = Color >> 16; *FBOffset++ = Color >> 8; *FBOffset = Color;
+}
+
 bool GDS_Init( struct GDS_Device* Device ) {
 	
 	if (Device->Depth > 8) Device->FramebufferSize = Device->Width * Device->Height * ((8 + Device->Depth - 1) / 8);
 	else Device->FramebufferSize = (Device->Width * Device->Height) / (8 / Device->Depth);
+    
+    // set the proper DrawPixel function if not already set by driver
+    if (!Device->DrawPixelFast) {
+        if (Device->Depth == 1) Device->DrawPixelFast = DrawPixel1Fast;
+        else if (Device->Depth == 4 && Device->HighNibble) Device->DrawPixelFast = DrawPixel4FastHigh;
+        else if (Device->Depth == 4) Device->DrawPixelFast = DrawPixel4Fast;
+        else if (Device->Depth == 8) Device->DrawPixelFast = DrawPixel8Fast;	
+        else if (Device->Depth == 16) Device->DrawPixelFast = DrawPixel16Fast;	
+        else if (Device->Depth == 24 && Device->Mode == GDS_RGB666) Device->DrawPixelFast = DrawPixel18Fast;	
+        else if (Device->Depth == 24 && Device->Mode == GDS_RGB888) Device->DrawPixelFast = DrawPixel24Fast;	
+    }	
 	
 	// allocate FB unless explicitely asked not to
 	if (!(Device->Alloc & GDS_ALLOC_NONE)) {

components/display/core/gds_draw.c

@@ -45,7 +45,7 @@ __attribute__( ( always_inline ) ) static inline void SwapInt( int* a, int* b )
 }
 
 void IRAM_ATTR GDS_DrawPixelFast( struct GDS_Device* Device, int X, int Y, int Color ) {
-	DrawPixelFast( Device, X, Y, Color );
+	Device->DrawPixelFast( Device, X, Y, Color );
 }
 
 void IRAM_ATTR GDS_DrawPixel( struct GDS_Device* Device, int X, int Y, int Color ) {
@@ -63,7 +63,7 @@ void GDS_DrawHLine( struct GDS_Device* Device, int x, int y, int Width, int Colo
 	if (y < 0) y = 0;
 	else if (y >= Device->Height) y = Device->Height - 1;
 
-    for ( ; x < XEnd; x++ ) DrawPixelFast( Device, x, y, Color );
+    for ( ; x < XEnd; x++ ) Device->DrawPixelFast( Device, x, y, Color );
 }
 
 void GDS_DrawVLine( struct GDS_Device* Device, int x, int y, int Height, int Color ) {
@@ -97,7 +97,7 @@ static inline void DrawWideLine( struct GDS_Device* Device, int x0, int y0, int
 
     for ( ; x < x1; x++ ) {
         if ( IsPixelVisible( Device, x, y ) == true ) {
-            DrawPixelFast( Device, x, y, Color );
+            Device->DrawPixelFast( Device, x, y, Color );
         }
 
         if ( Error > 0 ) {
@@ -126,7 +126,7 @@ static inline void DrawTallLine( struct GDS_Device* Device, int x0, int y0, int
 
     for ( ; y < y1; y++ ) {
         if ( IsPixelVisible( Device, x, y ) == true ) {
-            DrawPixelFast( Device, x, y, Color );
+            Device->DrawPixelFast( Device, x, y, Color );
         }
 
         if ( Error > 0 ) {
@@ -213,37 +213,65 @@ void GDS_DrawBitmapCBR(struct GDS_Device* Device, uint8_t *Data, int Width, int
 				iptr += Height;
 			}	
 		}
-	} else if (Device->Depth == 4)	{
+	} else if (Device->Depth == 4) {
 		uint8_t *optr = Device->Framebuffer;
 		int LineLen = Device->Width >> 1;
 		
 		Height >>= 3;
 		Color &= 0x0f;
-		
-		for (int i = Width * Height, r = 0, c = 0; --i >= 0;) {
-			uint8_t Byte = BitReverseTable256[*Data++];
-			// we need to linearize code to let compiler better optimize
-			if (c & 0x01) {
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; 
-			} else {
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
-				*optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen;
-			}	
-			// end of a column, move to next one
-			if (++r == Height) { c++; r = 0; optr = Device->Framebuffer + (c >> 1); }		
+        
+        if (Device->HighNibble) {
+            for (int i = Width * Height, r = 0, c = 0; --i >= 0;) {
+                uint8_t Byte = BitReverseTable256[*Data++];
+                // we need to linearize code to let compiler better optimize
+                if (c & 0x01) {
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; 
+                } else {
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen;
+                }	
+            // end of a column, move to next one
+                if (++r == Height) { c++; r = 0; optr = Device->Framebuffer + (c >> 1); }		
+            }
+        } else {
+            for (int i = Width * Height, r = 0, c = 0; --i >= 0;) {
+                uint8_t Byte = BitReverseTable256[*Data++];
+                // we need to linearize code to let compiler better optimize
+                if (c & 0x01) {
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0x0f) | (((Byte & 0x01)*Color)<<4); optr += LineLen; 
+                } else {
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen; Byte >>= 1;
+                    *optr = (*optr & 0xf0) | (((Byte & 0x01)*Color)); optr += LineLen;
+                }	
+                // end of a column, move to next one
+                if (++r == Height) { c++; r = 0; optr = Device->Framebuffer + (c >> 1); }		
+            }
 		}
 	} else if (Device->Depth == 8) {
 		uint8_t *optr = Device->Framebuffer;
@@ -320,14 +348,14 @@ void GDS_DrawBitmapCBR(struct GDS_Device* Device, uint8_t *Data, int Width, int
 		// don't know bitdepth, use brute-force solution
 		for (int i = Width * Height, r = 0, c = 0; --i >= 0;) {
 			uint8_t Byte = *Data++;
-			DrawPixelFast( Device, c, (r << 3) + 7, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 6, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 5, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 4, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 3, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 2, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 1, (Byte & 0x01) * Color ); Byte >>= 1;
-			DrawPixelFast( Device, c, (r << 3) + 0, (Byte & 0x01) * Color ); 
+			Device->DrawPixelFast( Device, c, (r << 3) + 7, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 6, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 5, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 4, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 3, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 2, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 1, (Byte & 0x01) * Color ); Byte >>= 1;
+			Device->DrawPixelFast( Device, c, (r << 3) + 0, (Byte & 0x01) * Color ); 
 			if (++r == Height) { c++; r = 0; }			
 		}
 		/* for better understanding, here is the mundane version 

components/display/core/gds_private.h

@@ -98,6 +98,7 @@ struct GDS_Device {
 	uint16_t Width, TextWidth;
     uint16_t Height;
 	uint8_t Depth, Mode;
+    bool HighNibble;
 	
 	uint8_t	Alloc;	
 	uint8_t* Framebuffer;
@@ -155,69 +156,9 @@ static inline bool IsPixelVisible( struct GDS_Device* Device, int x, int y )  {
     return Result;
 }
 
-static inline void DrawPixel1Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
-    uint32_t YBit = ( Y & 0x07 );
-    uint8_t* FBOffset;
-
-    /* 
-     * We only need to modify the Y coordinate since the pitch
-     * of the screen is the same as the width.
-     * Dividing Y by 8 gives us which row the pixel is in but not
-     * the bit position.
-     */
-    Y>>= 3;
-
-    FBOffset = Device->Framebuffer + ( ( Y * Device->Width ) + X );
-
-    if ( Color == GDS_COLOR_XOR ) {
-        *FBOffset ^= BIT( YBit );
-    } else {
-        *FBOffset = ( Color == GDS_COLOR_BLACK ) ? *FBOffset & ~BIT( YBit ) : *FBOffset | BIT( YBit );
-    }
-}
-
-static inline void DrawPixel4Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
-	uint8_t* FBOffset = Device->Framebuffer + ( (Y * Device->Width >> 1) + (X >> 1));
-	*FBOffset = X & 0x01 ? (*FBOffset & 0x0f) | ((Color & 0x0f) << 4) : ((*FBOffset & 0xf0) | (Color & 0x0f));
-}
-
-static inline void DrawPixel8Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
-	Device->Framebuffer[Y * Device->Width + X] = Color;
-}
-
-// assumes that Color is 16 bits R..RG..GB..B from MSB to LSB and FB wants 1st serialized byte to start with R
-static inline void DrawPixel16Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
-	uint16_t* FBOffset = (uint16_t*) Device->Framebuffer + Y * Device->Width + X;
-	*FBOffset = __builtin_bswap16(Color);
-}
-
-// assumes that Color is 18 bits RGB from MSB to LSB RRRRRRGGGGGGBBBBBB, so byte[0] is B 
-// FB is 3-bytes packets and starts with R for serialization so 0,1,2 ... = xxRRRRRR xxGGGGGG xxBBBBBB 
-static inline void DrawPixel18Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
-	uint8_t* FBOffset = Device->Framebuffer + (Y * Device->Width + X) * 3;
-	*FBOffset++ = Color >> 12; *FBOffset++ = (Color >> 6) & 0x3f; *FBOffset = Color & 0x3f;
-}
-
-// assumes that Color is 24 bits RGB from MSB to LSB RRRRRRRRGGGGGGGGBBBBBBBB, so byte[0] is B 
-// FB is 3-bytes packets and starts with R for serialization so 0,1,2 ... = RRRRRRRR GGGGGGGG BBBBBBBB 
-static inline void DrawPixel24Fast( struct GDS_Device* Device, int X, int Y, int Color ) {
-	uint8_t* FBOffset = Device->Framebuffer + (Y * Device->Width + X) * 3;
-	*FBOffset++ = Color >> 16; *FBOffset++ = Color >> 8; *FBOffset = Color;
-}
-
-static inline void IRAM_ATTR DrawPixelFast( struct GDS_Device* Device, int X, int Y, int Color ) {
-    if (Device->DrawPixelFast) Device->DrawPixelFast( Device, X, Y, Color );
-	else if (Device->Depth == 4) DrawPixel4Fast( Device, X, Y, Color );
-	else if (Device->Depth == 1) DrawPixel1Fast( Device, X, Y, Color );
-	else if (Device->Depth == 16) DrawPixel16Fast( Device, X, Y, Color );	
-	else if (Device->Depth == 24 && Device->Mode == GDS_RGB666) DrawPixel18Fast( Device, X, Y, Color );	
-	else if (Device->Depth == 24 && Device->Mode == GDS_RGB888) DrawPixel24Fast( Device, X, Y, Color );	
-	else if (Device->Depth == 8) DrawPixel8Fast( Device, X, Y, Color );	
-}	
-
 static inline void IRAM_ATTR DrawPixel( struct GDS_Device* Device, int x, int y, int Color ) {
     if ( IsPixelVisible( Device, x, y ) == true ) {
-        DrawPixelFast( Device, x, y, Color );
+        Device->DrawPixelFast( Device, x, y, Color );
     }
 }
 

components/display/core/gds_text.c

@@ -108,7 +108,7 @@ bool GDS_TextLine(struct GDS_Device* Device, int N, int Pos, int Attr, char *Tex
 		int Y_min = max(0, Device->Lines[N].Y), Y_max = max(0, Device->Lines[N].Y + Device->Lines[N].Font->Height);
 		for (int c = (Attr & GDS_TEXT_CLEAR_EOL) ? X : 0; c < Device->TextWidth; c++) 
 			for (int y = Y_min; y < Y_max; y++)
-				DrawPixelFast( Device, c, y, GDS_COLOR_BLACK );
+				Device->DrawPixelFast( Device, c, y, GDS_COLOR_BLACK );
 	}
 		
 	GDS_FontDrawString( Device, X, Device->Lines[N].Y, Text, GDS_COLOR_WHITE );

components/display/display.c

@@ -63,6 +63,7 @@ static EXT_RAM_ATTR struct {
 } displayer;
 
 static const char *known_drivers[] = {"SH1106",
+        "SH1122",
 		"SSD1306",
 		"SSD1322",
 		"SSD1326",
@@ -79,8 +80,8 @@ static void displayer_task(void *args);
 static void display_sleep(void);
 
 struct GDS_Device *display;   
-extern GDS_DetectFunc SSD1306_Detect, SSD132x_Detect, SH1106_Detect, SSD1675_Detect, SSD1322_Detect, SSD1351_Detect, ST77xx_Detect, ILI9341_Detect;
-GDS_DetectFunc *drivers[] = { SH1106_Detect, SSD1306_Detect, SSD132x_Detect, SSD1675_Detect, SSD1322_Detect, SSD1351_Detect, ST77xx_Detect, ILI9341_Detect, NULL };
+extern GDS_DetectFunc SSD1306_Detect, SSD132x_Detect, SH1106_Detect, SH1122_Detect, SSD1675_Detect, SSD1322_Detect, SSD1351_Detect, ST77xx_Detect, ILI9341_Detect;
+GDS_DetectFunc *drivers[] = { SH1106_Detect, SH1122_Detect, SSD1306_Detect, SSD132x_Detect, SSD1675_Detect, SSD1322_Detect, SSD1351_Detect, ST77xx_Detect, ILI9341_Detect, NULL };
 
 /****************************************************************************************
  * 

components/led_strip/led_strip.c

@@ -293,11 +293,8 @@ bool led_strip_init(struct led_strip_t *led_strip)
     static EXT_RAM_ATTR StackType_t xStack[LED_STRIP_TASK_SIZE] __attribute__ ((aligned (4)));
 
     if ((led_strip == NULL) ||
-        (led_strip->rmt_channel >= RMT_CHANNEL_MAX) ||
-        (led_strip->gpio > GPIO_NUM_33) || 
         (led_strip->led_strip_working == NULL) ||
         (led_strip->led_strip_showing == NULL) ||
-        (led_strip->led_strip_length == 0) ||
         (led_strip->access_semaphore == NULL)) {
         return false;
     }

components/led_strip/led_vu.c

@@ -24,6 +24,7 @@
 #include "monitor.h"
 #include "led_strip.h"
 #include "platform_config.h"
+#include "services.h"
 #include "led_vu.h"
 
 static const char *TAG = "led_vu";
@@ -55,6 +56,7 @@ static EXT_RAM_ATTR struct {
     int vu_start_l;
     int vu_start_r;
     int vu_status;
+    int vu_scale;
 } strip;
 
 static int led_addr(int pos ) {
@@ -70,31 +72,31 @@ static void battery_svc(float value, int cells) {
 	if (battery_handler_chain) battery_handler_chain(value, cells);
 }
 
+/****************************************************************************************
+ * Suspend.
+ * 
+ */
+static void led_vu_sleep(void) {
+    led_vu_clear(led_display); 
+}
+
 /****************************************************************************************
  * Initialize the led vu strip if configured.
  * 
  */
 void led_vu_init()
 {
-    char* p;
     char* config = config_alloc_get_str("led_vu_config", NULL, "N/A");
 
-    // Initialize led VU strip 
-    char* drivername = strcasestr(config, "WS2812");
-
-    if ((p = strcasestr(config, "length")) != NULL) {
-        strip.length = atoi(strchr(p, '=') + 1);
-    } // else 0
-    if ((p = strcasestr(config, "gpio")) != NULL) {
-        strip.gpio = atoi(strchr(p, '=') + 1);
-    } else {
-        strip.gpio = LED_VU_DEFAULT_GPIO;
-    }
+    PARSE_PARAM(config, "length",'=', strip.length);
+    PARSE_PARAM(config, "gpio",'=', strip.gpio);
     // check for valid configuration
-    if (!drivername || !strip.gpio) {
+    if (!strip.gpio) {
         ESP_LOGI(TAG, "led_vu configuration invalid");
         goto done;
     }
+    strip.vu_scale = 100;
+    PARSE_PARAM(config, "scale",'=',strip.vu_scale);
 
     battery_handler_chain = battery_handler_svc;
     battery_handler_svc = battery_svc;
@@ -114,7 +116,7 @@ void led_vu_init()
         strip.vu_start_r = strip.vu_length + 1;
         strip.vu_status = strip.vu_length;
     }
-    ESP_LOGI(TAG, "vu meter using length:%d left:%d right:%d status:%d", strip.vu_length, strip.vu_start_l, strip.vu_start_r, strip.vu_status);
+    ESP_LOGI(TAG, "vu meter using length:%d left:%d right:%d status:%d scale:%d", strip.vu_length, strip.vu_start_l, strip.vu_start_r, strip.vu_status, strip.vu_scale);
 
     // create driver configuration
     led_strip_config.rgb_led_type = RGB_LED_TYPE_WS2812;
@@ -138,6 +140,8 @@ void led_vu_init()
     // reserver max memory for remote management systems
     rmt_set_mem_block_num(led_strip_config.rmt_channel, 7);
 
+    services_sleep_setsuspend(led_vu_sleep);
+
     led_vu_clear(led_display);
 
     done:
@@ -157,6 +161,14 @@ uint16_t led_vu_string_length() {
     return (uint16_t)strip.length;
 }
 
+/****************************************************************************************
+ * Returns a user defined scale (percent)
+ */
+uint16_t led_vu_scale() {
+    if (!led_display) return 0;
+    return (uint16_t)strip.vu_scale;
+}
+
 /****************************************************************************************
  * Turns all LEDs off (Black)
  */

components/led_strip/led_vu.h

@@ -21,6 +21,7 @@
 extern struct led_strip_t* led_display;
 
 uint16_t led_vu_string_length();
+uint16_t led_vu_scale();
 void led_vu_progress_bar(int pct, int bright);
 void led_vu_display(int vu_l, int vu_r, int bright, bool comet);
 void led_vu_spin_dial(int gain, int rate, int speed, bool comet);

components/platform_config/platform_config.c

@@ -538,7 +538,7 @@ bool config_set_group_bit(int bit_num,bool flag){
 	return result;
 }
 
-void config_set_default(nvs_type_t type, const char *key, void * default_value, size_t blob_size) {
+void config_set_default(nvs_type_t type, const char *key, const void * default_value, size_t blob_size) {
 	if(!config_lock(LOCK_MAX_WAIT/portTICK_PERIOD_MS)){
 		ESP_LOGE(TAG, "Unable to lock config");
 		return;

components/platform_config/platform_config.h

@@ -56,7 +56,7 @@ cJSON * config_alloc_get_cjson(const char *key);
 esp_err_t config_set_cjson_str_and_free(const char *key, cJSON *value);
 void config_get_uint16t_from_str(const char *key, uint16_t *value, uint16_t default_value);
 void config_delete_key(const char *key);
-void config_set_default(nvs_type_t type, const char *key, void * default_value, size_t blob_size);
+void config_set_default(nvs_type_t type, const char *key, const void * default_value, size_t blob_size);
 void * config_alloc_get(nvs_type_t nvs_type, const char *key) ;
 bool wait_for_commit();
 char * config_alloc_get_json(bool bFormatted);

components/platform_console/app_squeezelite/cmd_squeezelite.c

@@ -43,11 +43,15 @@ const __attribute__((section(".rodata_desc"))) esp_app_desc_t esp_app_desc = {
 extern void register_audio_config(void);
 extern void register_rotary_config(void);
 extern void register_ledvu_config(void);
+extern void register_nvs();
 
 void register_optional_cmd(void) {
+    #if CONFIG_WITH_CONFIG_UI	
     register_rotary_config();
-	register_ledvu_config();
+#endif
     register_audio_config();
+	register_ledvu_config();
+	register_nvs();
 }    
 
 extern int squeezelite_main(int argc, char **argv);

components/platform_console/cmd_system.c

@@ -62,10 +62,13 @@ static void register_free();
 static void register_setdevicename();
 static void register_heap();
 static void register_dump_heap();
+static void register_abort();
 static void register_version();
 static void register_restart();
+#if CONFIG_WITH_CONFIG_UI
 static void register_deep_sleep();
 static void register_light_sleep();
+#endif
 static void register_factory_boot();
 static void register_restart_ota();
 static void register_set_services();
@@ -73,24 +76,43 @@ static void register_set_services();
 static void register_tasks();
 #endif
 extern BaseType_t network_manager_task;
+FILE * system_open_memstream(const char * cmdname,char **buf,size_t *buf_size){
+	FILE *f = open_memstream(buf, buf_size);
+	if (f == NULL) {
+		cmd_send_messaging(cmdname,MESSAGING_ERROR,"Unable to open memory stream.");
+	}
+    return f;
+}
 void register_system()
 {
-    register_free();
+
+    register_setdevicename();
     register_set_services();
+    register_free();
     register_heap();
     register_dump_heap();
-    register_setdevicename();
+    register_abort();
     register_version();
     register_restart();
-    register_deep_sleep();
-    register_light_sleep();
     register_factory_boot();
     register_restart_ota();
 #if WITH_TASKS_INFO
     register_tasks();
 #endif
+#if CONFIG_WITH_CONFIG_UI
+    register_deep_sleep();
+    register_light_sleep();
+#endif
+}
+void simple_restart()
+{
+	log_send_messaging(MESSAGING_WARNING,"Rebooting.");
+	if(!wait_for_commit()){
+		log_send_messaging(MESSAGING_WARNING,"Unable to commit configuration. ");
+	}
+	vTaskDelay(750/ portTICK_PERIOD_MS);
+    esp_restart();
 }
-
 /* 'version' command */
 static int get_version(int argc, char **argv)
 {
@@ -124,40 +146,48 @@ static void register_version()
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
 
+/* 'abort' command */
+static int cmd_abort(int argc, char **argv)
+{
+    cmd_send_messaging(argv[0],MESSAGING_INFO,"ABORT!\r\n");
+    
+    abort();
+    return 0;
+}
+
+static void register_abort()
+{
+    const esp_console_cmd_t cmd = {
+        .command = "abort",
+        .help = "Crash now!",
+        .hint = NULL,
+        .func = &cmd_abort,
+    };
+    cmd_to_json(&cmd);
+    ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
+}
+
 esp_err_t guided_boot(esp_partition_subtype_t partition_subtype)
 {
     if(is_recovery_running){
         if(partition_subtype ==ESP_PARTITION_SUBTYPE_APP_FACTORY){
-            log_send_messaging(MESSAGING_WARNING,"RECOVERY application is already active");
-            if(!wait_for_commit()){
-                log_send_messaging(MESSAGING_WARNING,"Unable to commit configuration. ");
-            }
-            
-            vTaskDelay(750/ portTICK_PERIOD_MS);
-            esp_restart();
-            return ESP_OK;
+            // log_send_messaging(MESSAGING_WARNING,"RECOVERY application is already active");
+            simple_restart();
         }
     }
     else {
         if(partition_subtype !=ESP_PARTITION_SUBTYPE_APP_FACTORY){
-            log_send_messaging(MESSAGING_WARNING,"SQUEEZELITE application is already active");
-            if(!wait_for_commit()){
-                log_send_messaging(MESSAGING_WARNING,"Unable to commit configuration. ");
-            }
-            
-            vTaskDelay(750/ portTICK_PERIOD_MS);
-            esp_restart();
-            return ESP_OK;
+            // log_send_messaging(MESSAGING_WARNING,"SQUEEZELITE application is already active");
+            simple_restart();
         }
     }
 	esp_err_t err = ESP_OK;
-	bool bFound=false;
-    log_send_messaging(MESSAGING_INFO, "Looking for partition type %u",partition_subtype);
+    // log_send_messaging(MESSAGING_INFO, "Looking for partition type %u",partition_subtype);
     const esp_partition_t *partition;
 	esp_partition_iterator_t it = esp_partition_find(ESP_PARTITION_TYPE_APP, partition_subtype, NULL);
 
 	if(it == NULL){
-		log_send_messaging(MESSAGING_ERROR,"Reboot failed. Cannot iterate through partitions");
+		log_send_messaging(MESSAGING_ERROR,"Reboot failed. Partitions error");
 	}
 	else
 	{
@@ -166,15 +196,11 @@ esp_err_t guided_boot(esp_partition_subtype_t partition_subtype)
 		ESP_LOGD(TAG, "Releasing partition iterator");
 		esp_partition_iterator_release(it);
 		if(partition != NULL){
-			log_send_messaging(MESSAGING_INFO, "Found application partition %s sub type %u", partition->label,partition_subtype);
+			log_send_messaging(MESSAGING_INFO, "Rebooting to %s", partition->label);
 			err=esp_ota_set_boot_partition(partition);
 			if(err!=ESP_OK){
-				bFound=false;
 				log_send_messaging(MESSAGING_ERROR,"Unable to select partition for reboot: %s",esp_err_to_name(err));
 			}
-			else{
-                bFound=true;
-			}
 		}
 		else
 		{
@@ -183,13 +209,7 @@ esp_err_t guided_boot(esp_partition_subtype_t partition_subtype)
 		}
 		ESP_LOGD(TAG, "Yielding to other processes");
 		taskYIELD();
-		if(bFound) {
-			if(!wait_for_commit()){
-				log_send_messaging(MESSAGING_WARNING,"Unable to commit configuration changes. ");
-			}
-			vTaskDelay(750/ portTICK_PERIOD_MS);
-			esp_restart();
-		}
+        simple_restart();
 	}
 
 	return ESP_OK;
@@ -197,46 +217,31 @@ esp_err_t guided_boot(esp_partition_subtype_t partition_subtype)
 
 static int restart(int argc, char **argv)
 {
-	log_send_messaging(MESSAGING_WARNING, "\n\nPerforming a simple restart to the currently active partition.");
-	if(!wait_for_commit()){
-		cmd_send_messaging(argv[0],MESSAGING_WARNING,"Unable to commit configuration. ");
-	}
-    vTaskDelay(750/ portTICK_PERIOD_MS);
-    esp_restart();
+    simple_restart();
     return 0;
 }
 
-void simple_restart()
-{
-	log_send_messaging(MESSAGING_WARNING,"System reboot requested.");
-	if(!wait_for_commit()){
-		log_send_messaging(MESSAGING_WARNING,"Unable to commit configuration. ");
-	}
 
-											   
-	vTaskDelay(750/ portTICK_PERIOD_MS);
-    esp_restart();
-}
 
 esp_err_t guided_restart_ota(){
-	log_send_messaging(MESSAGING_WARNING,"System reboot to Application requested");
+	log_send_messaging(MESSAGING_WARNING,"Booting to Squeezelite");
     guided_boot(ESP_PARTITION_SUBTYPE_APP_OTA_0);
 	return ESP_FAIL; // return fail.  This should never return... we're rebooting!
 }
 esp_err_t guided_factory(){
-	log_send_messaging(MESSAGING_WARNING,"System reboot to recovery requested");
+	log_send_messaging(MESSAGING_WARNING,"Booting to recovery");
 	guided_boot(ESP_PARTITION_SUBTYPE_APP_FACTORY);
 	return ESP_FAIL; // return fail.  This should never return... we're rebooting!
 }
 static int restart_factory(int argc, char **argv)
 {
-	cmd_send_messaging(argv[0],MESSAGING_WARNING, "Executing guided boot into recovery");
+	cmd_send_messaging(argv[0],MESSAGING_WARNING, "Booting to Recovery");
 	guided_boot(ESP_PARTITION_SUBTYPE_APP_FACTORY);
 	return 0; // return fail.  This should never return... we're rebooting!
 }
 static int restart_ota(int argc, char **argv)
 {
-	cmd_send_messaging(argv[0],MESSAGING_WARNING, "Executing guided boot into ota app 0");
+	cmd_send_messaging(argv[0],MESSAGING_WARNING, "Booting to Squeezelite");
 	guided_boot(ESP_PARTITION_SUBTYPE_APP_OTA_0);
 	return 0; // return fail.  This should never return... we're rebooting!
 }
@@ -248,7 +253,9 @@ static void register_restart()
         .hint = NULL,
         .func = &restart,
     };
+#if CONFIG_WITH_CONFIG_UI    
     cmd_to_json(&cmd);
+#endif    
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
 static void register_restart_ota()
@@ -259,7 +266,9 @@ static void register_restart_ota()
         .hint = NULL,
         .func = &restart_ota,
     };
+#if CONFIG_WITH_CONFIG_UI    
     cmd_to_json(&cmd);
+#endif
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
 
@@ -271,7 +280,9 @@ static void register_factory_boot()
         .hint = NULL,
         .func = &restart_factory,
     };
+#if CONFIG_WITH_CONFIG_UI    
     cmd_to_json(&cmd);
+#endif
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
 /** 'free' command prints available heap memory */
@@ -287,11 +298,14 @@ static void register_free()
 {
     const esp_console_cmd_t cmd = {
         .command = "free",
-        .help = "Get the current size of free heap memory",
+        .help = "Get free heap memory",
         .hint = NULL,
         .func = &free_mem,
     };
+#if CONFIG_WITH_CONFIG_UI
     cmd_to_json(&cmd);
+#endif
+
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
 static int dump_heap(int argc, char **argv)
@@ -303,16 +317,16 @@ static int dump_heap(int argc, char **argv)
 /* 'heap' command prints minumum heap size */
 static int heap_size(int argc, char **argv)
 {
-    ESP_LOGI(TAG,"Heap internal:%zu (min:%zu) (largest block:%zu)\nexternal:%zu (min:%zu) (largest block:%zd)\ndma :%zu (min:%zu) (largest block:%zd)",
-						heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
-						heap_caps_get_minimum_free_size(MALLOC_CAP_INTERNAL),
-						heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL),
-                        heap_caps_get_free_size(MALLOC_CAP_SPIRAM),
-						heap_caps_get_minimum_free_size(MALLOC_CAP_SPIRAM),
-						heap_caps_get_largest_free_block(MALLOC_CAP_SPIRAM),
-                        heap_caps_get_free_size(MALLOC_CAP_DMA),
-						heap_caps_get_minimum_free_size(MALLOC_CAP_DMA),
-						heap_caps_get_largest_free_block(MALLOC_CAP_DMA));
+    // ESP_LOGI(TAG,"Heap internal:%zu (min:%zu) (largest block:%zu)\nexternal:%zu (min:%zu) (largest block:%zd)\ndma :%zu (min:%zu) (largest block:%zd)",
+	// 					heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
+	// 					heap_caps_get_minimum_free_size(MALLOC_CAP_INTERNAL),
+	// 					heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL),
+    //                     heap_caps_get_free_size(MALLOC_CAP_SPIRAM),
+	// 					heap_caps_get_minimum_free_size(MALLOC_CAP_SPIRAM),
+	// 					heap_caps_get_largest_free_block(MALLOC_CAP_SPIRAM),
+    //                     heap_caps_get_free_size(MALLOC_CAP_DMA),
+	// 					heap_caps_get_minimum_free_size(MALLOC_CAP_DMA),
+	// 					heap_caps_get_largest_free_block(MALLOC_CAP_DMA));
     cmd_send_messaging(argv[0],MESSAGING_INFO,"Heap internal:%zu (min:%zu) (largest block:%zu)\nexternal:%zu (min:%zu) (largest block:%zd)\ndma :%zu (min:%zu) (largest block:%zd)",
 						heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
 						heap_caps_get_minimum_free_size(MALLOC_CAP_INTERNAL),
@@ -457,9 +471,8 @@ static int setdevicename(int argc, char **argv)
 
 	char *buf = NULL;
 	size_t buf_size = 0;
-	FILE *f = open_memstream(&buf, &buf_size);
+	FILE *f = system_open_memstream(argv[0],&buf, &buf_size);
 	if (f == NULL) {
-		cmd_send_messaging(argv[0],MESSAGING_ERROR,"Unable to open memory stream.");
 		return 1;
 	}
 	nerrors+=setnamevar("a2dp_dev_name", f, name);
@@ -488,11 +501,13 @@ static void register_heap()
 {
     const esp_console_cmd_t heap_cmd = {
         .command = "heap",
-        .help = "Get minimum size of free heap memory found during execution",
+        .help = "Get minimum size of free heap memory",
         .hint = NULL,
         .func = &heap_size,
     };
+#if CONFIG_WITH_CONFIG_UI
     cmd_to_json(&heap_cmd);
+#endif    
     ESP_ERROR_CHECK( esp_console_cmd_register(&heap_cmd) );
 
 }
@@ -521,6 +536,7 @@ static void register_setdevicename()
 			.func = &setdevicename,
 			.argtable = &name_args
 	};
+
 	cmd_to_json_with_cb(&set_name,&setdevicename_cb);
 	ESP_ERROR_CHECK(esp_console_cmd_register(&set_name));
 }
@@ -561,7 +577,7 @@ static void register_tasks()
 
 
 /** 'deep_sleep' command puts the chip into deep sleep mode */
-
+#if CONFIG_WITH_CONFIG_UI
 static struct {
     struct arg_int *wakeup_time;
     struct arg_int *wakeup_gpio_num;
@@ -618,15 +634,15 @@ static void register_deep_sleep()
 
     const esp_console_cmd_t cmd = {
         .command = "deep_sleep",
-        .help = "Enter deep sleep mode. "
-        "Two wakeup modes are supported: timer and GPIO. "
-        "If no wakeup option is specified, will sleep indefinitely.",
+        .help = "Enter deep sleep mode. ",
         .hint = NULL,
         .func = &deep_sleep,
         .argtable = &deep_sleep_args
     };
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
+#endif
+
 static int enable_disable(FILE * f,char * nvs_name, struct arg_lit *arg){
 	esp_err_t err = config_set_value(NVS_TYPE_STR, nvs_name, arg->count>0?"Y":"N");
 	const char * name = arg->hdr.longopts?arg->hdr.longopts:arg->hdr.glossary;
@@ -649,9 +665,8 @@ static int do_set_services(int argc, char **argv)
     }
 	char *buf = NULL;
 	size_t buf_size = 0;
-	FILE *f = open_memstream(&buf, &buf_size);
+	FILE *f = system_open_memstream(argv[0],&buf, &buf_size);
 	if (f == NULL) {
-		cmd_send_messaging(argv[0],MESSAGING_ERROR,"Unable to open memory stream.");
 		return 1;
 	}
 
@@ -674,7 +689,7 @@ static int do_set_services(int argc, char **argv)
         
         if(err!=ESP_OK){
             nerrors++;
-            fprintf(f,"Error setting telnet service to %s. %s\n",set_services_args.telnet->sval[0], esp_err_to_name(err));
+            fprintf(f,"Error setting telnet to %s. %s\n",set_services_args.telnet->sval[0], esp_err_to_name(err));
         }
         else {
             fprintf(f,"Telnet service changed to %s\n",set_services_args.telnet->sval[0]);
@@ -706,7 +721,6 @@ cJSON * set_services_cb(){
     #if WITH_TASKS_INFO        
     console_set_bool_parameter(values,"stats",set_services_args.stats);
     #endif
-
 	if ((p = config_alloc_get(NVS_TYPE_STR, "telnet_enable")) != NULL) {
         if(strcasestr("YX",p)!=NULL){
 		    cJSON_AddStringToObject(values,set_services_args.telnet->hdr.longopts,"Telnet Only");
@@ -717,7 +731,6 @@ cJSON * set_services_cb(){
         else {
             cJSON_AddStringToObject(values,set_services_args.telnet->hdr.longopts,"Disabled");
         }
-
 		FREE_AND_NULL(p);
 	}
 
@@ -745,6 +758,8 @@ static void register_set_services(){
 	cmd_to_json_with_cb(&cmd,&set_services_cb);
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
+
+#if CONFIG_WITH_CONFIG_UI
 static struct {
     struct arg_int *wakeup_time;
     struct arg_int *wakeup_gpio_num;
@@ -836,4 +851,4 @@ static void register_light_sleep()
     };
     ESP_ERROR_CHECK( esp_console_cmd_register(&cmd) );
 }
-
+#endif

components/platform_console/cmd_system.h

@@ -17,6 +17,7 @@ void register_system();
 esp_err_t guided_factory();
 esp_err_t guided_restart_ota();
 void simple_restart();
+FILE * system_open_memstream(const char * cmdname,char **buf,size_t *buf_size);
 
 #ifdef __cplusplus
 }

components/platform_console/cmd_wifi.c

@@ -204,8 +204,10 @@ void register_wifi_join()
 
 void register_wifi()
 {
+ #ifdef WIFI_CMDLINE
     register_wifi_join();
     if(bypass_network_manager){
     	initialise_wifi();
     }
+#endif
 }

components/raop/rtp.c

@@ -96,6 +96,7 @@ typedef struct __attribute__((__packed__)) audio_buffer_entry {   // decoded aud
     u16_t len;    
     u8_t ready;
     u8_t allocated;
+    u8_t missed;
 } abuf_t;
 
 typedef struct rtp_s {
@@ -126,11 +127,6 @@ typedef struct rtp_s {
 		u32_t 	rtp, time;
 		u8_t  	status;
 	} synchro;
-	struct {
-		u32_t time;
-		seq_t seqno;
-		u32_t rtptime;
-	} record;
 	int latency;			// rtp hold depth in samples
 	u32_t resent_req, resent_rec;	// total resent + recovered frames
 	u32_t silent_frames;	// total silence frames
@@ -147,8 +143,8 @@ typedef struct rtp_s {
 #endif
 
 	struct alac_codec_s *alac_codec;
-	int flush_seqno;
-	bool playing;
+	int first_seqno;
+	enum { RTP_WAIT, RTP_STREAM, RTP_PLAY } state;
     int stalled;
 	raop_data_cb_t data_cb;
 	raop_cmd_cb_t cmd_cb;
@@ -231,7 +227,7 @@ rtp_resp_t rtp_init(struct in_addr host, int latency, char *aeskey, char *aesiv,
 	ctx->rtp_host.sin_family = AF_INET;
 	ctx->rtp_host.sin_addr.s_addr = INADDR_ANY;
 	pthread_mutex_init(&ctx->ab_mutex, 0);
-	ctx->flush_seqno = -1;
+	ctx->first_seqno = -1;
 	ctx->latency = latency;
 	ctx->ab_read = ctx->ab_write;
 
@@ -339,24 +335,23 @@ void rtp_end(rtp_t *ctx)
 
 /*---------------------------------------------------------------------------*/
 bool rtp_flush(rtp_t *ctx, unsigned short seqno, unsigned int rtptime, bool exit_locked)
-{
-	bool rc = true;
-	u32_t now = gettime_ms();
+{  
+    pthread_mutex_lock(&ctx->ab_mutex);
+    
+    // always store flush seqno as we only want stricly above it, even when equal to RECORD
+    ctx->first_seqno = seqno;
+    bool flushed = false;
 
-	if (now < ctx->record.time + 250 || (ctx->record.seqno == seqno && ctx->record.rtptime == rtptime)) {
-		rc = false;
-		LOG_ERROR("[%p]: FLUSH ignored as same as RECORD (%hu - %u)", ctx, seqno, rtptime);
-	} else {
-		pthread_mutex_lock(&ctx->ab_mutex);
-		buffer_reset(ctx->audio_buffer);
-		ctx->playing = false;
-		ctx->flush_seqno = seqno;
-		if (!exit_locked) pthread_mutex_unlock(&ctx->ab_mutex);
+    // no need to stop playing if recent or equal to record - but first_seqno is needed
+    if (ctx->state == RTP_PLAY) {
+        buffer_reset(ctx->audio_buffer);
+        ctx->state = RTP_WAIT;
+        flushed = true;
+        LOG_INFO("[%p]: FLUSH packets below %hu - %u", ctx, seqno, rtptime);
 	}
-
-	LOG_INFO("[%p]: flush %hu %u", ctx, seqno, rtptime);
-
-	return rc;
+    
+	if (!exit_locked || !flushed) pthread_mutex_unlock(&ctx->ab_mutex);
+	return flushed;
 }
 
 /*---------------------------------------------------------------------------*/
@@ -367,11 +362,9 @@ void rtp_flush_release(rtp_t *ctx) {
 
 /*---------------------------------------------------------------------------*/
 void rtp_record(rtp_t *ctx, unsigned short seqno, unsigned rtptime) {
-	ctx->record.seqno = seqno;
-	ctx->record.rtptime = rtptime;
-	ctx->record.time = gettime_ms();
-
-	LOG_INFO("[%p]: record %hu %u", ctx, seqno, rtptime);
+    ctx->first_seqno = (seqno || rtptime) ? seqno : -1;
+	ctx->state = RTP_WAIT;
+	LOG_INFO("[%p]: record %hu - %u", ctx, seqno, rtptime);	
 }
 
 /*---------------------------------------------------------------------------*/
@@ -442,29 +435,54 @@ static void alac_decode(rtp_t *ctx, s16_t *dest, char *buf, int len, u16_t *outs
 /*---------------------------------------------------------------------------*/
 static void buffer_put_packet(rtp_t *ctx, seq_t seqno, unsigned rtptime, bool first, char *data, int len) {
 	abuf_t *abuf = NULL;
-	u32_t playtime;
 
 	pthread_mutex_lock(&ctx->ab_mutex);
+    
+    /* if we have received a RECORD with a seqno, then this is the first allowed rtp sequence number 
+	 * and we are in RTP_WAIT state. If seqno was 0, then we are waiting for a flush that will tell 
+	 * us what should be our first allowed packet but we must accept everything, wait and clean when 
+	 * we the it arrives. This means that first packet moves us to RTP_STREAM state where we accept
+	 * frames but wait for the FLUSH. If this was a FLUSH while playing, then we are also in RTP_WAIT 
+	 * state but we do have an allowed seqno and we should not accept any frame before we have it */
 
-	if (!ctx->playing) {
-		if ((ctx->flush_seqno == -1 || seq_order(ctx->flush_seqno, seqno)) &&
-		   (ctx->synchro.status & RTP_SYNC) && (ctx->synchro.status & NTP_SYNC)) {
-			ctx->ab_write = seqno-1;
-			ctx->ab_read = seqno;
-			ctx->flush_seqno = -1;
-			ctx->playing = true;
-			ctx->resent_req = ctx->resent_rec = ctx->silent_frames = ctx->discarded = 0;
-			playtime = ctx->synchro.time + ((rtptime - ctx->synchro.rtp) * 10) / (RAOP_SAMPLE_RATE / 100);
-			ctx->cmd_cb(RAOP_PLAY, playtime);
-		} else {
-			pthread_mutex_unlock(&ctx->ab_mutex);
-			return;
-		}
+	// if we have a pending first seqno and we are below, always ignore it
+	if (ctx->first_seqno != -1 && seq_order(seqno, ctx->first_seqno)) {
+		pthread_mutex_unlock(&ctx->ab_mutex);
+		return;
 	}
 
+	if (ctx->state == RTP_WAIT) {
+		ctx->ab_write = seqno - 1;
+		ctx->ab_read = ctx->ab_write + 1;
+        ctx->resent_req = ctx->resent_rec = ctx->silent_frames = ctx->discarded = 0;        
+		if (ctx->first_seqno != -1) {
+        	LOG_INFO("[%p]: 1st accepted packet:%d, now playing", ctx, seqno);                                    
+			ctx->state = RTP_PLAY;
+			ctx->first_seqno = -1;
+            u32_t playtime = ctx->synchro.time + ((rtptime - ctx->synchro.rtp) * 10) / (RAOP_SAMPLE_RATE / 100);            
+            ctx->cmd_cb(RAOP_PLAY, playtime);         
+		} else {
+            ctx->state = RTP_STREAM;
+			LOG_INFO("[%p]: 1st accepted packet:%hu, waiting for FLUSH", ctx, seqno);
+		}
+	} else if (ctx->state == RTP_STREAM && ctx->first_seqno != -1 && seq_order(ctx->first_seqno, seqno + 1)) {
+		// now we're talking, but first discard all packets with a seqno below first_seqno AND not ready
+		while (seq_order(ctx->ab_read, ctx->first_seqno) ||
+			!ctx->audio_buffer[BUFIDX(ctx->ab_read)].ready) {
+			ctx->audio_buffer[BUFIDX(ctx->ab_read)].ready = false;
+			ctx->ab_read++;
+		}
+        LOG_INFO("[%p]: done waiting for FLUSH with packet:%d, now playing starting:%hu", ctx, seqno, ctx->ab_read);
+		ctx->state = RTP_PLAY;
+		ctx->first_seqno = -1;
+        u32_t playtime = ctx->synchro.time + ((rtptime - ctx->synchro.rtp) * 10) / (RAOP_SAMPLE_RATE / 100);            
+		ctx->cmd_cb(RAOP_PLAY, playtime);         
+	}   
+    
+    abuf = ctx->audio_buffer + BUFIDX(seqno);
+
 	if (seqno == (u16_t) (ctx->ab_write+1)) {
 		// expected packet
-		abuf = ctx->audio_buffer + BUFIDX(seqno);
 		ctx->ab_write = seqno;
 		LOG_SDEBUG("packet expected seqno:%hu rtptime:%u (W:%hu R:%hu)", seqno, rtptime, ctx->ab_write, ctx->ab_read);
 	} else if (seq_order(ctx->ab_write, seqno)) {
@@ -475,7 +493,7 @@ static void buffer_put_packet(rtp_t *ctx, seq_t seqno, unsigned rtptime, bool fi
             ctx->ab_read = seqno;            
 		} else {
             // request re-send missed frames and evaluate resent date as a whole *after*
-            rtp_request_resend(ctx, ctx->ab_write + 1, seqno-1);
+            if (ctx->state == RTP_PLAY) rtp_request_resend(ctx, ctx->ab_write + 1, seqno-1);
             
             // resend date is after all requests have been sent
             u32_t now = gettime_ms();
@@ -488,16 +506,15 @@ static void buffer_put_packet(rtp_t *ctx, seq_t seqno, unsigned rtptime, bool fi
             LOG_DEBUG("[%p]: packet newer seqno:%hu rtptime:%u (W:%hu R:%hu)", ctx, seqno, rtptime, ctx->ab_write, ctx->ab_read);            
         }        
 
-		abuf = ctx->audio_buffer + BUFIDX(seqno);
 		ctx->ab_write = seqno;
 	} else if (seq_order(ctx->ab_read, seqno + 1)) {
 		// recovered packet, not yet sent
-		abuf = ctx->audio_buffer + BUFIDX(seqno);
 		ctx->resent_rec++;
 		LOG_DEBUG("[%p]: packet recovered seqno:%hu rtptime:%u (W:%hu R:%hu)", ctx, seqno, rtptime, ctx->ab_write, ctx->ab_read);
 	} else {
-		// too late
-		LOG_DEBUG("[%p]: packet too late seqno:%hu rtptime:%u (W:%hu R:%hu)", ctx, seqno, rtptime, ctx->ab_write, ctx->ab_read);
+        // too late
+		if (abuf->missed) LOG_INFO("[%p]: packet too late seqno:%hu rtptime:%u (W:%hu R:%hu)", ctx, seqno, rtptime, ctx->ab_write, ctx->ab_read);
+        abuf = NULL;
 	}
 
 	if (ctx->in_frames++ > 1000) {
@@ -508,6 +525,7 @@ static void buffer_put_packet(rtp_t *ctx, seq_t seqno, unsigned rtptime, bool fi
 	if (abuf) {
 		alac_decode(ctx, abuf->data, data, len, &abuf->len);
 		abuf->ready = 1;
+        abuf->missed = 0;
 		// this is the local rtptime when this frame is expected to play
 		abuf->rtptime = rtptime;
 		buffer_push_packet(ctx);
@@ -528,7 +546,7 @@ static void buffer_push_packet(rtp_t *ctx) {
 	u32_t now, playtime, hold = max((ctx->latency * 1000) / (8 * RAOP_SAMPLE_RATE), 100);
 
 	// not ready to play yet
-	if (!ctx->playing || ctx->synchro.status != (RTP_SYNC | NTP_SYNC)) return;
+	if (ctx->state != RTP_PLAY || ctx->synchro.status != (RTP_SYNC | NTP_SYNC)) return;
 
 	// there is always at least one frame in the buffer
 	do {
@@ -551,6 +569,7 @@ static void buffer_push_packet(rtp_t *ctx) {
 				LOG_DEBUG("[%p]: created zero frame (W:%hu R:%hu)", ctx, ctx->ab_write, ctx->ab_read);
 				ctx->data_cb(silence_frame, ctx->frame_size * 4, playtime);
 				ctx->silent_frames++;
+                curframe->missed = 1;
 			}
 		} else if (curframe->ready) {
 			ctx->data_cb((const u8_t*) curframe->data, curframe->len, playtime);
@@ -572,17 +591,25 @@ static void buffer_push_packet(rtp_t *ctx) {
 	}
 
 	LOG_SDEBUG("playtime %u %d [W:%hu R:%hu] %d", playtime, playtime - now, ctx->ab_write, ctx->ab_read, curframe->ready);
+   
+    // try to request resend missing packet in order, explore up to 32 frames
+    for (int step = max((ctx->ab_write - ctx->ab_read + 1) / 32, 1), 
+         i = 0, first = 0; 
+         seq_order(ctx->ab_read + i, ctx->ab_write); i += step) {
+             
+        abuf_t* frame = ctx->audio_buffer + BUFIDX(ctx->ab_read + i);
 
-	// each missing packet will be requested up to (latency_frames / 16) times
-	for (int i = 0; seq_order(ctx->ab_read + i, ctx->ab_write); i += 16) {
-		abuf_t *frame = ctx->audio_buffer + BUFIDX(ctx->ab_read + i);
-		if (!frame->ready && now - frame->last_resend > RESEND_TO) {
-            // stop if one fails
-			if (!rtp_request_resend(ctx, ctx->ab_read + i, ctx->ab_read + i)) break;
-			frame->last_resend = now;
-		}
-	}
-
+        // stop when we reach a ready frame or a recent pending resend
+        if (first && (frame->ready || now - frame->last_resend <= RESEND_TO)) {
+            if (!rtp_request_resend(ctx, first, ctx->ab_read + i - 1)) break;
+            first = 0;
+            i += step - 1;
+        } else if (!frame->ready && now - frame->last_resend > RESEND_TO) {
+            if (!first) first = ctx->ab_read + i;
+            frame->last_resend = now;
+        }
+    }
+}
 
 
 /*---------------------------------------------------------------------------*/

components/services/accessors.c

@@ -70,7 +70,7 @@ static char * get_dac_config_string(){
 	return config_alloc_get_str("dac_config", CONFIG_DAC_CONFIG, "model=i2s,bck=" STR(CONFIG_I2S_BCK_IO)
 											",ws=" STR(CONFIG_I2S_WS_IO) ",do=" STR(CONFIG_I2S_DO_IO)
 											",sda=" STR(CONFIG_I2C_SDA) ",scl=" STR(CONFIG_I2C_SCL)
-											",mute=" STR(CONFIG_MUTE_GPIO));
+											",mute=" STR(CONFIG_MUTE_GPIO) ",mck=" STR(CONFIG_I2S_MCK_IO));
 }
 
 /****************************************************************************************
@@ -329,7 +329,7 @@ esp_err_t config_ledvu_set(ledvu_struct_t * config){
 	esp_err_t err=ESP_OK;
 	char * config_buffer=malloc_init_external(buffer_size);
 	if(config_buffer)  {
-		snprintf(config_buffer,buffer_size,"%s,length=%i,gpio=%i",config->type, config->length, config->gpio);
+		snprintf(config_buffer,buffer_size,"%s,length=%i,gpio=%i,scale=%i",config->type, config->length, config->gpio, config->scale);
 		log_send_messaging(MESSAGING_INFO,"Updating ledvu configuration to %s",config_buffer);
 		err = config_set_value(NVS_TYPE_STR, "led_vu_config", config_buffer);
 		if(err!=ESP_OK){
@@ -761,14 +761,13 @@ const rotary_struct_t * config_rotary_get() {
  */
 const ledvu_struct_t * config_ledvu_get() {
 
-	static ledvu_struct_t ledvu={  .type = "WS2812", .gpio = -1, .length = 0};
+	static ledvu_struct_t ledvu={  .type = "WS2812", .gpio = -1, .length = 0, .scale= 100 };
 	char *config = config_alloc_get_default(NVS_TYPE_STR, "led_vu_config", NULL, 0);
 	if (config && *config) {
-		char *p;
-	
-		// ToDo:  Add code for future support of alternate led types
-		if ((p = strcasestr(config, "gpio")) != NULL) ledvu.gpio = atoi(strchr(p, '=') + 1);
-		if ((p = strcasestr(config, "length")) != NULL) ledvu.length = atoi(strchr(p, '=') + 1);
+		PARSE_PARAM_STR(config, "type", '=', ledvu.type, 15);
+		PARSE_PARAM(config, "gpio", '=', ledvu.gpio);
+		PARSE_PARAM(config, "length", '=', ledvu.length);
+		PARSE_PARAM(config, "scale", '=', ledvu.scale);
 		free(config);
 	}
 	return &ledvu;

components/services/accessors.h

@@ -13,7 +13,7 @@
 #include "driver/i2s.h"
 #include "driver/spi_master.h"
 #include "gpio_exp.h"
-
+#include "cJSON.h"
 extern const char *i2c_name_type;
 extern const char *spi_name_type;
 
@@ -89,6 +89,7 @@ typedef struct {
 	char type[16];
 	int length;
 	int gpio;
+	int scale;
 } ledvu_struct_t;
 
 typedef struct {

components/services/audio_controls.c

@@ -38,6 +38,7 @@ static esp_err_t actrls_process_action (const cJSON * member, actrls_config_t *c
 
 static esp_err_t actrls_init_json(const char *profile_name, bool create);
 static void control_rotary_handler(void *client, rotary_event_e event, bool long_press);
+static void volume_rotary_handler(void *client, rotary_event_e event, bool long_press);
 static void rotary_timer( TimerHandle_t xTimer );
 
 static const actrls_config_map_t actrls_config_map[] =
@@ -157,6 +158,24 @@ esp_err_t actrls_init(const char *profile_name) {
 		err = create_rotary(NULL, A, B, SW, longpress, control_rotary_handler) ? ESP_OK : ESP_FAIL;
 	}
 	
+	free(config);
+	config = config_alloc_get_default(NVS_TYPE_STR, "volume_rotary", NULL, 0);
+	
+	// now see if we have a dedicated volume rotary
+	if (config && *config) {
+		int A = -1, B = -1, SW = -1;
+		
+		// parse config
+		PARSE_PARAM(config, "A", '=', A);
+		PARSE_PARAM(config, "B", '=', B);
+		PARSE_PARAM(config, "SW", '=', SW);
+						
+		// create rotary (no handling of long press)
+		err |= create_volume_rotary(NULL, A, B, SW, volume_rotary_handler) ? ESP_OK : ESP_FAIL;
+	}
+	
+	free(config);
+	
 	// set infrared GPIO if any
 	parse_set_GPIO(set_ir_gpio);
 
@@ -290,6 +309,29 @@ static void control_rotary_handler(void *client, rotary_event_e event, bool long
 	if (action != ACTRLS_NONE) (*current_controls[action])(pressed);
 }
 
+/****************************************************************************************
+ * 
+ */
+static void volume_rotary_handler(void *client, rotary_event_e event, bool long_press) {
+	actrls_action_e action = ACTRLS_NONE;
+	bool pressed = true;
+	
+	switch(event) {
+	case ROTARY_LEFT:
+		action = ACTRLS_VOLDOWN;
+		break;
+	case ROTARY_RIGHT:
+		action = ACTRLS_VOLUP;
+		break;
+	case ROTARY_PRESSED:
+		action = ACTRLS_TOGGLE;
+	default:
+		break;
+	}
+	
+	if (action != ACTRLS_NONE) (*current_controls[action])(pressed);
+}
+
 /****************************************************************************************
  * 
  */
@@ -568,6 +610,13 @@ exit:
 	return err;
 }
 
+/****************************************************************************************
+ *
+ */
+actrls_handler get_ctrl_handler(actrls_action_e action) {
+	return current_controls[action];	
+}
+
 /****************************************************************************************
  *
  */

components/services/audio_controls.h

@@ -53,3 +53,9 @@ void actrls_set_default(const actrls_t controls, bool raw_controls, actrls_hook_
 void actrls_set(const actrls_t controls, bool raw_controls, actrls_hook_t *hook, actrls_ir_handler_t *ir_handler);
 void actrls_unset(void);
 bool actrls_ir_action(uint16_t addr, uint16_t code);
+
+/* Call this to get the handler for any of the audio actions. It will map to the control specific
+to the current mode (LMS, AirPlay, Spotify). This is useful if you have a custom way to create 
+buttons (like analogue buttons)
+*/
+actrls_handler get_ctrl_handler(actrls_action_e);

components/services/buttons.c

@@ -58,13 +58,13 @@ static struct {
 
 static TimerHandle_t polled_timer;
 
-static EXT_RAM_ATTR struct {
+static EXT_RAM_ATTR struct encoder {
 	QueueHandle_t queue;
 	void *client;
 	rotary_encoder_info_t info;
 	int A, B, SW;
 	rotary_handler handler;
-} rotary;
+} rotary, volume;
 
 static EXT_RAM_ATTR struct {
 	RingbufHandle_t rb;
@@ -227,11 +227,22 @@ static void buttons_task(void* arg) {
 			// received a rotary event
 		    xQueueReceive(rotary.queue, &event, 0);
 
-			ESP_LOGD(TAG, "Event: position %d, direction %s", event.state.position,
+			ESP_LOGD(TAG, "Rotary event: position %d, direction %s", event.state.position,
 					event.state.direction ? (event.state.direction == ROTARY_ENCODER_DIRECTION_CLOCKWISE ? "CW" : "CCW") : "NOT_SET");
 			
 			rotary.handler(rotary.client, event.state.direction == ROTARY_ENCODER_DIRECTION_CLOCKWISE ? 
 											ROTARY_RIGHT : ROTARY_LEFT, false);   
+		} else if (xActivatedMember == volume.queue) {
+			rotary_encoder_event_t event = { 0 };
+			
+			// received a volume rotary event
+		    xQueueReceive(volume.queue, &event, 0);
+
+			ESP_LOGD(TAG, "Volume event: position %d, direction %s", event.state.position,
+					event.state.direction ? (event.state.direction == ROTARY_ENCODER_DIRECTION_CLOCKWISE ? "CW" : "CCW") : "NOT_SET");
+			
+			volume.handler(volume.client, event.state.direction == ROTARY_ENCODER_DIRECTION_CLOCKWISE ? 
+											ROTARY_RIGHT : ROTARY_LEFT, false);   											
 		} else {
 			// this is IR
 			active = infrared_receive(infrared.rb, infrared.handler);
@@ -395,7 +406,55 @@ void *button_remap(void *client, int gpio, button_handler handler, int long_pres
 }
 
 /****************************************************************************************
- * Rotary encoder handler
+ * Create rotary encoder
+ */
+static bool create_rotary_encoder(struct encoder *encoder, void *id, int A, int B, int SW, int long_press, rotary_handler handler, button_handler button) {
+	// nasty ESP32 bug: fire-up constantly INT on GPIO 36/39 if ADC1, AMP, Hall used which WiFi does when PS is activated
+	if (A == -1 || B == -1 || A == 36 || A == 39 || B == 36 || B == 39) {
+		ESP_LOGI(TAG, "Cannot create rotary %d %d", A, B);
+		return false;
+	}
+
+	encoder->A = A;
+	encoder->B = B;
+	encoder->SW = SW;
+	encoder->client = id;
+	encoder->handler = handler;
+	
+    // Initialise the rotary encoder device with the GPIOs for A and B signals
+    rotary_encoder_init(&encoder->info, A, B);
+		
+    // Create a queue for events from the rotary encoder driver.
+    encoder->queue = rotary_encoder_create_queue();
+    rotary_encoder_set_queue(&encoder->info, encoder->queue);
+	
+	common_task_init();
+	xQueueAddToSet( encoder->queue, common_queue_set );
+
+	// create companion button if rotary has a switch
+	if (SW != -1) button_create(id, SW, BUTTON_LOW, true, 0, button, long_press, -1);
+	
+	return true;
+}
+
+/****************************************************************************************
+ * Volume button encoder handler
+ */
+static void volume_button_handler(void *id, button_event_e event, button_press_e mode, bool long_press) {
+	ESP_LOGI(TAG, "Volume encoder push-button %d", event);
+	volume.handler(id, event == BUTTON_PRESSED ? ROTARY_PRESSED : ROTARY_RELEASED, long_press);
+}	
+
+/****************************************************************************************
+ * Create volume encoder
+ */
+bool create_volume_rotary(void *id, int A, int B, int SW, rotary_handler handler) {
+	ESP_LOGI(TAG, "Created volume encoder A:%d B:%d, SW:%d", A, B, SW);
+	return create_rotary_encoder(&volume, id, A, B, SW, false, handler, volume_button_handler);
+}	
+
+/****************************************************************************************
+ * Rotary button encoder handler
  */
 static void rotary_button_handler(void *id, button_event_e event, button_press_e mode, bool long_press) {
 	ESP_LOGI(TAG, "Rotary push-button %d", event);
@@ -406,34 +465,8 @@ static void rotary_button_handler(void *id, button_event_e event, button_press_e
  * Create rotary encoder
  */
 bool create_rotary(void *id, int A, int B, int SW, int long_press, rotary_handler handler) {
-	// nasty ESP32 bug: fire-up constantly INT on GPIO 36/39 if ADC1, AMP, Hall used which WiFi does when PS is activated
-	if (A == -1 || B == -1 || A == 36 || A == 39 || B == 36 || B == 39) {
-		ESP_LOGI(TAG, "Cannot create rotary %d %d", A, B);
-		return false;
-	}
-
-	rotary.A = A;
-	rotary.B = B;
-	rotary.SW = SW;
-	rotary.client = id;
-	rotary.handler = handler;
-	
-    // Initialise the rotary encoder device with the GPIOs for A and B signals
-    rotary_encoder_init(&rotary.info, A, B);
-		
-    // Create a queue for events from the rotary encoder driver.
-    rotary.queue = rotary_encoder_create_queue();
-    rotary_encoder_set_queue(&rotary.info, rotary.queue);
-	
-	common_task_init();
-	xQueueAddToSet( rotary.queue, common_queue_set );
-
-	// create companion button if rotary has a switch
-	if (SW != -1) button_create(id, SW, BUTTON_LOW, true, 0, rotary_button_handler, long_press, -1);
-	
 	ESP_LOGI(TAG, "Created rotary encoder A:%d B:%d, SW:%d", A, B, SW);
-	
-	return true;
+	return create_rotary_encoder(&rotary, id, A, B, SW, long_press, handler, rotary_button_handler);
 }	
 
 /****************************************************************************************

components/services/buttons.h

@@ -34,5 +34,5 @@ typedef enum { ROTARY_LEFT, ROTARY_RIGHT, ROTARY_PRESSED, ROTARY_RELEASED } rota
 typedef void (*rotary_handler)(void *id, rotary_event_e event, bool long_press);
 
 bool create_rotary(void *id, int A, int B, int SW, int long_press, rotary_handler handler);
-
+bool create_volume_rotary(void *id, int A, int B, int SW, rotary_handler handler);
 bool create_infrared(int gpio, infrared_handler handler, infrared_mode_t mode);

components/services/gpio_exp.c

@@ -83,6 +83,10 @@ static void      mcp23s17_set_direction(gpio_exp_t* self);
 static uint32_t  mcp23s17_read(gpio_exp_t* self);
 static void      mcp23s17_write(gpio_exp_t* self);
 
+static void 	aw9523_set_direction(gpio_exp_t* self);
+static uint32_t aw9523_read(gpio_exp_t* self);
+static void 	aw9523_write(gpio_exp_t* self);
+
 static void   service_handler(void *arg);
 static void   debounce_handler( TimerHandle_t xTimer );
 
@@ -130,6 +134,11 @@ static const struct gpio_exp_model_s {
 	  .set_pull_mode = mcp23s17_set_pull_mode,
 	  .read = mcp23s17_read,
 	  .write = mcp23s17_write, },
+	{ .model = "aw9523",
+	  .trigger = GPIO_INTR_LOW_LEVEL,
+	  .set_direction = aw9523_set_direction,
+	  .read = aw9523_read,
+	  .write = aw9523_write, },
 };
 
 static EXT_RAM_ATTR uint8_t n_expanders;
@@ -671,6 +680,24 @@ static void mcp23s17_write(gpio_exp_t* self) {
 	spi_write(self->spi_handle, self->phy.addr, 0x12, self->shadow, 2);
 }
 
+/****************************************************************************************
+ * AW9523 family : direction, read and write
+ */
+static void aw9523_set_direction(gpio_exp_t* self) {
+	i2c_write(self->phy.port, self->phy.addr, 0x04, self->r_mask, 2);
+	i2c_write(self->phy.port, self->phy.addr, 0x06, ~self->r_mask, 2);
+}
+
+static uint32_t aw9523_read(gpio_exp_t* self) {
+	// Reading both registers in one go does not seem to reset IRQ correctly
+	uint8_t port1 = i2c_read(self->phy.port, self->phy.addr, 0x00, 1);
+	return (i2c_read(self->phy.port, self->phy.addr, 0x01, 1) << 8) | port1;
+}
+
+static void aw9523_write(gpio_exp_t* self) {
+	i2c_write(self->phy.port, self->phy.addr, 0x02, self->shadow, 2);
+}
+
 /***************************************************************************************
                                      I2C low level                                   
 ***************************************************************************************/
@@ -793,4 +820,4 @@ static uint32_t spi_read(spi_device_handle_t handle, uint8_t addr, uint8_t reg,
 	free(transaction);
 
 	return data;
-}
+}

components/services/monitor.c

@@ -62,7 +62,7 @@ static void task_stats( cJSON* top ) {
 	current.n = uxTaskGetSystemState( current.tasks, current.n, &current.total );
 	cJSON_AddNumberToObject(top,"ntasks",current.n);
 
-	char scratch[SCRATCH_SIZE] = { };
+	char scratch[SCRATCH_SIZE] = {0};
 
 #ifdef CONFIG_FREERTOS_GENERATE_RUN_TIME_STATS
 #pragma message("Compiled with runtime stats")
@@ -143,11 +143,13 @@ static void monitor_trace(uint32_t now) {
 			heap_caps_get_minimum_free_size(MALLOC_CAP_DMA));
 
 	task_stats(top);
+
 	char * top_a= cJSON_PrintUnformatted(top);
 	if(top_a){
 		messaging_post_message(MESSAGING_INFO, MESSAGING_CLASS_STATS,top_a);
 		FREE_AND_NULL(top_a);
 	}
+
 	cJSON_Delete(top);
 }
 

components/services/services.c

@@ -361,7 +361,7 @@ void services_init(void) {
 	}
 #endif
 
-	// set potential power GPIO on chip first in case expanders are power using these
+	// set potential power GPIO on chip first in case expanders are powered using these
 	parse_set_GPIO(set_chip_power_gpio);
 
 	// shared I2C bus
@@ -380,7 +380,7 @@ void services_init(void) {
 	ESP_LOGI(TAG,"Configuring SPI mosi:%d miso:%d clk:%d host:%u dc:%d", spi_config->mosi_io_num, spi_config->miso_io_num, spi_config->sclk_io_num, spi_system_host, spi_system_dc_gpio);
 
 	if (spi_config->mosi_io_num != -1 && spi_config->sclk_io_num != -1) {
-		spi_bus_initialize( spi_system_host, spi_config, 1 );
+		spi_bus_initialize( spi_system_host, spi_config, SPI_DMA_CH_AUTO );
 		if (spi_system_dc_gpio != -1) {
 			gpio_reset_pin(spi_system_dc_gpio);
 			gpio_set_direction( spi_system_dc_gpio, GPIO_MODE_OUTPUT );

components/spotify/Shim.cpp

@@ -53,6 +53,7 @@ private:
     std::atomic<states> state;
     std::string credentials;
     bool zeroConf;
+    std::atomic<bool> flushed = false, notify = true;
         
     int startOffset, volume = 0, bitrate = 160;
     httpd_handle_t serverHandle;
@@ -60,6 +61,7 @@ private:
     cspot_cmd_cb_t cmdHandler;
     cspot_data_cb_t dataHandler;
     std::string lastTrackId;
+    cspot::TrackInfo trackInfo;
 
     std::shared_ptr<cspot::LoginBlob> blob;
     std::unique_ptr<cspot::SpircHandler> spirc;
@@ -206,11 +208,13 @@ void cspotPlayer::eventHandler(std::unique_ptr<cspot::SpircHandler::Event> event
         trackStatus = TRACK_INIT;
         // memorize position for when track's beginning will be detected
         startOffset = std::get<int>(event->data);
+        notify = !flushed;
+        flushed = false;
         // Spotify servers do not send volume at connection
         spirc->setRemoteVolume(volume);
 
         cmdHandler(CSPOT_START, 44100);
-        CSPOT_LOG(info, "(re)start playing");
+        CSPOT_LOG(info, "(re)start playing at %d", startOffset);
         break;
     }
     case cspot::SpircHandler::EventType::PLAY_PAUSE: {
@@ -219,17 +223,14 @@ void cspotPlayer::eventHandler(std::unique_ptr<cspot::SpircHandler::Event> event
         break;
     }
     case cspot::SpircHandler::EventType::TRACK_INFO: {
-        auto trackInfo = std::get<cspot::TrackInfo>(event->data);
-        cmdHandler(CSPOT_TRACK_INFO, trackInfo.duration, startOffset, trackInfo.artist.c_str(),
-                       trackInfo.album.c_str(), trackInfo.name.c_str(), trackInfo.imageUrl.c_str());
-        spirc->updatePositionMs(startOffset);
-        startOffset = 0;
+        trackInfo = std::get<cspot::TrackInfo>(event->data);
         break;
     }
+    case cspot::SpircHandler::EventType::FLUSH: 
+        flushed = true;
+        __attribute__ ((fallthrough));        
     case cspot::SpircHandler::EventType::NEXT:
-    case cspot::SpircHandler::EventType::PREV:
-    case cspot::SpircHandler::EventType::FLUSH: {
-        // FLUSH is sent when there is no next, just clean everything
+    case cspot::SpircHandler::EventType::PREV: {
         cmdHandler(CSPOT_FLUSH);
         break;
     }
@@ -412,8 +413,13 @@ void cspotPlayer::runTask() {
                     uint32_t started;
                     cmdHandler(CSPOT_QUERY_STARTED, &started);
                     if (started) {
-                        CSPOT_LOG(info, "next track's audio has reached DAC");
-                        spirc->notifyAudioReachedPlayback();
+                        CSPOT_LOG(info, "next track's audio has reached DAC (offset %d)", startOffset);
+                        if (notify) spirc->notifyAudioReachedPlayback();
+                        else notify = true;
+                        cmdHandler(CSPOT_TRACK_INFO, trackInfo.duration, startOffset, trackInfo.artist.c_str(),
+                                    trackInfo.album.c_str(), trackInfo.name.c_str(), trackInfo.imageUrl.c_str());
+                        spirc->updatePositionMs(startOffset);
+                        startOffset = 0;
                         trackStatus = TRACK_STREAM;
                     }
                 } else if (trackStatus == TRACK_END) {
@@ -424,7 +430,7 @@ void cspotPlayer::runTask() {
                         CSPOT_LOG(info, "last track finished");
                         trackStatus = TRACK_INIT;
                         cmdHandler(CSPOT_STOP);
-                        spirc->setPause(true);
+                        spirc->notifyAudioEnded();
                     }
                 }
                 
@@ -461,6 +467,7 @@ void cspotPlayer::runTask() {
  */
 struct cspot_s* cspot_create(const char *name, httpd_handle_t server, int port, cspot_cmd_cb_t cmd_cb, cspot_data_cb_t data_cb) {
 	bell::setDefaultLogger();
+    bell::enableTimestampLogging(true);
     player = new cspotPlayer(name, server, port, cmd_cb, data_cb);
     player->startTask();
 	return (cspot_s*) player;

components/spotify/cspot/bell/external/civetweb/civetweb.c

@@ -22482,9 +22482,13 @@ mg_init_library(unsigned features)
 			file_mutex_init =
 			    pthread_mutex_init(&global_log_file_lock, &pthread_mutex_attr);
 			if (file_mutex_init == 0) {
+#ifdef WINSOCK_START
 				/* Start WinSock */
 				WSADATA data;
 				failed = wsa = WSAStartup(MAKEWORD(2, 2), &data);
+#else
+				failed = wsa = 0;
+#endif
 			}
 #else
 			mutexattr_init = pthread_mutexattr_init(&pthread_mutex_attr);
@@ -22498,7 +22502,9 @@ mg_init_library(unsigned features)
 		if (failed) {
 #if defined(_WIN32)
 			if (wsa == 0) {
+#ifdef WINSOCK_START
 				(void)WSACleanup();
+#endif
 			}
 			if (file_mutex_init == 0) {
 				(void)pthread_mutex_destroy(&global_log_file_lock);
@@ -22598,7 +22604,9 @@ mg_exit_library(void)
 #endif
 
 #if defined(_WIN32)
+#ifdef WINSOCK_START
 		(void)WSACleanup();
+#endif
 		(void)pthread_mutex_destroy(&global_log_file_lock);
 #else
 		(void)pthread_mutexattr_destroy(&pthread_mutex_attr);

components/spotify/cspot/bell/external/mdnssvc/climdnssvc.c

@@ -227,7 +227,7 @@ int main(int argc, char *argv[]) {
 		} else if (!strcasecmp(arg, "-i")) {
 			identity = *++argv;
 		} else {
-			// nothing let's try to be smart and handle legacy crappy		
+			// nothing let's try to be smart and handle legacy crap		
 			if (!identity) identity = *argv;
 			else if (!type) (void) !asprintf(&type, "%s.local", *argv);
 			else if (!port) port = atoi(*argv);
@@ -235,6 +235,7 @@ int main(int argc, char *argv[]) {
 				txt = (const char**) malloc((argc + 1) * sizeof(char**));
 				memcpy(txt, argv, argc * sizeof(char**));
 				txt[argc] = NULL;
+				break;
 			}
 			argc--;
 		}
@@ -250,13 +251,14 @@ int main(int argc, char *argv[]) {
 
 		mdnsd_set_hostname(svr, hostname, host);
 		svc = mdnsd_register_svc(svr, identity, type, port, NULL, txt);
-		mdns_service_destroy(svc);
+		// mdns_service_destroy(svc);
 
 #ifdef _WIN32
 		Sleep(INFINITE);
 #else
 		pause();
 #endif
+		mdns_service_remove(svr, svc);
 		mdnsd_stop(svr);
 	} else {
 		printf("Can't start server");
@@ -264,7 +266,7 @@ int main(int argc, char *argv[]) {
 	}
 
 	free(type);
-	free(txt);
+	if (txt) free(txt);
 
 #ifdef _WIN32
 	winsock_close();

components/spotify/cspot/bell/external/mdnssvc/mdnsd.c

@@ -144,11 +144,10 @@ static int create_recv_sock(uint32_t host) {
 	}
 
 #if !defined(_WIN32)
-  on = sizeof(on);
-  socklen_t len;
-  if (!getsockopt(sd, SOL_SOCKET, SO_REUSEPORT,(char*) &on, &len)) {
+  socklen_t len = sizeof(on);
+  if (!getsockopt(sd, SOL_SOCKET, SO_REUSEPORT, &on, &len)) {
     on = 1;
-	if ((r = setsockopt(sd, SOL_SOCKET, SO_REUSEPORT,(char*) &on, sizeof(on))) < 0) {
+	if ((r = setsockopt(sd, SOL_SOCKET, SO_REUSEPORT, &on, sizeof(on))) < 0) {
 		log_message(LOG_ERR, "recv setsockopt(SO_REUSEPORT): %m\n", r);
 	}
   }

components/spotify/cspot/bell/main/io/BellHTTPServer.cpp

@@ -12,6 +12,8 @@
 
 using namespace bell;
 
+std::mutex BellHTTPServer::initMutex;
+
 class WebSocketHandler : public CivetWebSocketHandler {
  public:
   BellHTTPServer::WSDataHandler dataHandler;
@@ -187,6 +189,7 @@ bool BellHTTPServer::handlePost(CivetServer* server,
 }
 
 BellHTTPServer::BellHTTPServer(int serverPort) {
+  std::lock_guard lock(initMutex);
   mg_init_library(0);
   BELL_LOG(info, "HttpServer", "Server listening on port %d", serverPort);
   this->serverPort = serverPort;
@@ -197,6 +200,11 @@ BellHTTPServer::BellHTTPServer(int serverPort) {
   server = std::make_unique<CivetServer>(civetWebOptions);
 }
 
+BellHTTPServer::~BellHTTPServer() {
+  std::lock_guard lock(initMutex);
+  mg_exit_library();
+}
+
 std::unique_ptr<BellHTTPServer::HTTPResponse> BellHTTPServer::makeJsonResponse(
     const std::string& json, int status) {
   auto response = std::make_unique<BellHTTPServer::HTTPResponse>();

components/spotify/cspot/bell/main/io/include/BellHTTPServer.h

@@ -19,6 +19,7 @@ namespace bell {
 class BellHTTPServer : public CivetHandler {
  public:
   BellHTTPServer(int serverPort);
+  ~BellHTTPServer();
 
   enum class WSState { CONNECTED, READY, CLOSED };
 
@@ -100,6 +101,8 @@ class BellHTTPServer : public CivetHandler {
   std::mutex responseMutex;
   HTTPHandler notFoundHandler;
 
+  static std::mutex initMutex;
+
   bool handleGet(CivetServer* server, struct mg_connection* conn);
   bool handlePost(CivetServer* server, struct mg_connection* conn);
 };

components/spotify/cspot/bell/main/platform/linux/MDNSService.cpp

@@ -5,6 +5,8 @@
 #include <unistd.h>
 #include <cstring>
 #include <vector>
+#include <mutex>
+#include <atomic>
 
 #if __has_include("avahi-client/client.h")
 #include <avahi-client/client.h>
@@ -40,8 +42,9 @@ class implMDNSService : public MDNSService {
 #endif
   static struct mdnsd* mdnsServer;
   static in_addr_t host;
+  static std::atomic<size_t> instances;
 
-  implMDNSService(struct mdns_service* service) : service(service){};
+  implMDNSService(struct mdns_service* service) : service(service){ instances++; };
 #ifndef BELL_DISABLE_AVAHI
   implMDNSService(AvahiEntryGroup* avahiGroup) : avahiGroup(avahiGroup){};
 #endif
@@ -50,6 +53,7 @@ class implMDNSService : public MDNSService {
 
 struct mdnsd* implMDNSService::mdnsServer = NULL;
 in_addr_t implMDNSService::host = INADDR_ANY;
+std::atomic<size_t> implMDNSService::instances = 0;
 static std::mutex registerMutex;
 #ifndef BELL_DISABLE_AVAHI
 AvahiClient* implMDNSService::avahiClient = NULL;
@@ -65,11 +69,21 @@ void implMDNSService::unregisterService() {
 #ifndef BELL_DISABLE_AVAHI
   if (avahiGroup) {
     avahi_entry_group_free(avahiGroup);
+    if (!--instances && implMDNSService::avahiClient) {
+      avahi_client_free(implMDNSService::avahiClient);
+      avahi_simple_poll_free(implMDNSService::avahiPoll);
+      implMDNSService::avahiClient = nullptr;
+      implMDNSService::avahiPoll = nullptr;
+    }
   } else
 #endif
   {
     mdns_service_remove(implMDNSService::mdnsServer, service);
-  }
+    if (!--instances && implMDNSService::mdnsServer) {
+     mdnsd_stop(implMDNSService::mdnsServer);
+     implMDNSService::mdnsServer = nullptr;
+    }
+  }  
 }
 
 std::unique_ptr<MDNSService> MDNSService::registerService(
@@ -179,19 +193,14 @@ std::unique_ptr<MDNSService> MDNSService::registerService(
     std::string type(serviceType + "." + serviceProto + ".local");
 
     BELL_LOG(info, "MDNS", "using built-in mDNS for %s", serviceName.c_str());
-    struct mdns_service* mdnsService =
+    auto service =
         mdnsd_register_svc(implMDNSService::mdnsServer, serviceName.c_str(),
-                           type.c_str(), servicePort, NULL, txt.data());
-    if (mdnsService) {
-      auto service =
-          mdnsd_register_svc(implMDNSService::mdnsServer, serviceName.c_str(),
                              type.c_str(), servicePort, NULL, txt.data());
 
-      return std::make_unique<implMDNSService>(service);
-    }
+    if (service) return std::make_unique<implMDNSService>(service);
   }
 
   BELL_LOG(error, "MDNS", "cannot start any mDNS listener for %s",
            serviceName.c_str());
-  return NULL;
+  return nullptr;
 }

components/spotify/cspot/bell/main/platform/win32/MDNSService.cpp

@@ -19,13 +19,12 @@ using namespace bell;
 class implMDNSService : public MDNSService {
  private:
   struct mdns_service* service;
-  void unregisterService(void) {
-    mdns_service_remove(implMDNSService::mdnsServer, service);
-  };
+  void unregisterService(void);
 
  public:
   static struct mdnsd* mdnsServer;
-  implMDNSService(struct mdns_service* service) : service(service){};
+  static std::atomic<size_t> instances;
+  implMDNSService(struct mdns_service* service) : service(service) { instances++; };
 };
 
 /**
@@ -33,8 +32,18 @@ class implMDNSService : public MDNSService {
  **/
 
 struct mdnsd* implMDNSService::mdnsServer = NULL;
+std::atomic<size_t> implMDNSService::instances = 0;
+
 static std::mutex registerMutex;
 
+void implMDNSService::unregisterService() {
+  mdns_service_remove(implMDNSService::mdnsServer, service);
+  if (!--instances && implMDNSService::mdnsServer) {
+    mdnsd_stop(implMDNSService::mdnsServer);
+    implMDNSService::mdnsServer = nullptr;
+  }   
+}
+
 std::unique_ptr<MDNSService> MDNSService::registerService(
     const std::string& serviceName, const std::string& serviceType,
     const std::string& serviceProto, const std::string& serviceHost,
@@ -94,5 +103,5 @@ std::unique_ptr<MDNSService> MDNSService::registerService(
       mdnsd_register_svc(implMDNSService::mdnsServer, serviceName.c_str(),
                          type.c_str(), servicePort, NULL, txt.data());
 
-  return std::make_unique<implMDNSService>(service);
+  return service ? std::make_unique<implMDNSService>(service) : nullptr;
 }

components/spotify/cspot/bell/main/utilities/BellLogger.cpp

@@ -10,6 +10,7 @@ void bell::enableSubmoduleLogging() {
   bell::bellGlobalLogger->enableSubmodule = true;
 }
 
-void bell::enableTimestampLogging() {
+void bell::enableTimestampLogging(bool local) {
   bell::bellGlobalLogger->enableTimestamp = true;
+  bell::bellGlobalLogger->shortTime = local;
 }

components/spotify/cspot/bell/main/utilities/include/BellLogger.h

@@ -14,6 +14,7 @@ class AbstractLogger {
  public:
   bool enableSubmodule = false;
   bool enableTimestamp = false;
+  bool shortTime = false;
 
   virtual void debug(std::string filename, int line, std::string submodule,
                      const char* format, ...) = 0;
@@ -94,10 +95,17 @@ class BellLogger : public bell::AbstractLogger {
                              now.time_since_epoch()) %
                          1000;
 
-      auto gmt_time = gmtime(&now_time);
       printf(colorReset);
-      std::cout << std::put_time(gmt_time, "[%Y-%m-%d %H:%M:%S") << '.'
-                << std::setfill('0') << std::setw(3) << nowMs.count() << "] ";
+      struct tm* gmt_time;
+      if (shortTime) {
+        gmt_time = localtime(&now_time);
+        std::cout << std::put_time(gmt_time, "[%H:%M:%S") << '.'
+                  << std::setfill('0') << std::setw(3) << nowMs.count() << "] ";
+      } else {
+        gmt_time = gmtime(&now_time);
+        std::cout << std::put_time(gmt_time, "[%Y-%m-%d %H:%M:%S") << '.'
+                  << std::setfill('0') << std::setw(3) << nowMs.count() << "] ";
+      }
     }
   }
 
@@ -129,7 +137,7 @@ class BellLogger : public bell::AbstractLogger {
 
 void setDefaultLogger();
 void enableSubmoduleLogging();
-void enableTimestampLogging();
+void enableTimestampLogging(bool local = false);
 }  // namespace bell
 
 #define BELL_LOG(type, ...)                                        \

components/spotify/cspot/bell/main/utilities/include/BellTask.h

@@ -72,7 +72,11 @@ class Task {
                           (LPTHREAD_START_ROUTINE)taskEntryFunc, this, 0, NULL);
     return thread != NULL;
 #else
-    return (pthread_create(&thread, NULL, taskEntryFunc, this) == 0);
+    if (!pthread_create(&thread, NULL, taskEntryFunc, this)) {
+        pthread_detach(thread);
+        return true;
+    }
+    return false;
 #endif
   }
 
@@ -108,13 +112,7 @@ class Task {
 #endif
 
   static void* taskEntryFunc(void* This) {
-    Task* self = (Task*)This;
-    self->runTask();
-#if _WIN32
-    WaitForSingleObject(self->thread, INFINITE);
-#else
-    pthread_join(self->thread, NULL);
-#endif
+    ((Task*)This)->runTask();
     return NULL;
   }
 };

components/spotify/cspot/include/SpircHandler.h

@@ -48,11 +48,12 @@ class SpircHandler {
 
   void setPause(bool pause);
 
-  void previousSong();
+  bool previousSong();
 
-  void nextSong();
+  bool nextSong();
 
   void notifyAudioReachedPlayback();
+  void notifyAudioEnded();
   void updatePositionMs(uint32_t position);
   void setRemoteVolume(int volume);
   void loadTrackFromURI(const std::string& uri);
@@ -74,7 +75,7 @@ class SpircHandler {
   void sendEvent(EventType type);
   void sendEvent(EventType type, EventData data);
 
-  void skipSong(TrackQueue::SkipDirection dir);
+  bool skipSong(TrackQueue::SkipDirection dir);
   void handleFrame(std::vector<uint8_t>& data);
   void notify();
 };

components/spotify/cspot/include/TrackPlayer.h

@@ -32,11 +32,11 @@ struct TrackReference;
 class TrackPlayer : bell::Task {
  public:
   // Callback types
-  typedef std::function<void(std::shared_ptr<QueuedTrack>)> TrackLoadedCallback;
+  typedef std::function<void(std::shared_ptr<QueuedTrack>, bool)>
+      TrackLoadedCallback;
   typedef std::function<size_t(uint8_t*, size_t, std::string_view)>
       DataCallback;
   typedef std::function<void()> EOFCallback;
-  typedef std::function<bool()> isAiringCallback;
 
   TrackPlayer(std::shared_ptr<cspot::Context> ctx,
               std::shared_ptr<cspot::TrackQueue> trackQueue,
@@ -49,7 +49,7 @@ class TrackPlayer : bell::Task {
 
   // CDNTrackStream::TrackInfo getCurrentTrackInfo();
   void seekMs(size_t ms);
-  void resetState();
+  void resetState(bool paused = false);
 
   // Vorbis codec callbacks
   size_t _vorbisRead(void* ptr, size_t size, size_t nmemb);
@@ -89,6 +89,7 @@ class TrackPlayer : bell::Task {
   std::atomic<bool> pendingReset = false;
   std::atomic<bool> inFuture = false;
   std::atomic<size_t> pendingSeekPositionMs = 0;
+  std::atomic<bool> startPaused = false;
 
   std::mutex runningMutex;
 

components/spotify/cspot/include/TrackQueue.h

@@ -24,7 +24,7 @@ class CDNAudioFile;
 // Used in got track info event
 struct TrackInfo {
   std::string name, album, artist, imageUrl, trackId;
-  uint32_t duration;
+  uint32_t duration, number, discNumber;
 
   void loadPbTrack(Track* pbTrack, const std::vector<uint8_t>& gid);
   void loadPbEpisode(Episode* pbEpisode, const std::vector<uint8_t>& gid);
@@ -54,6 +54,7 @@ class QueuedTrack {
 
   uint32_t requestedPosition;
   std::string identifier;
+  bool loading = false;
 
   // Will return nullptr if the track is not ready
   std::shared_ptr<cspot::CDNAudioFile> getAudioFile();
@@ -100,7 +101,7 @@ class TrackQueue : public bell::Task {
   bool hasTracks();
   bool isFinished();
   bool skipTrack(SkipDirection dir, bool expectNotify = true);
-  void updateTracks(uint32_t requestedPosition = 0, bool initial = false);
+  bool updateTracks(uint32_t requestedPosition = 0, bool initial = false);
   TrackInfo getTrackInfo(std::string_view identifier);
   std::shared_ptr<QueuedTrack> consumeTrack(
       std::shared_ptr<QueuedTrack> prevSong, int& offset);

components/spotify/cspot/protobuf/metadata.proto

@@ -32,6 +32,8 @@ message Artist {
 message Track {
     optional bytes gid = 1;
     optional string name = 2;
+    optional sint32 number = 5;
+    optional sint32 disc_number = 6;
     optional sint32 duration = 0x7;
     optional Album album = 0x3;
     repeated Artist artist = 0x4;
@@ -44,6 +46,7 @@ message Episode {
     optional bytes gid = 1;
     optional string name = 2;
     optional sint32 duration = 7;
+    optional sint32 number = 65;
     repeated AudioFile file = 12;
     repeated Restriction restriction = 0x4B;
     optional ImageGroup covers = 0x44;

components/spotify/cspot/src/SpircHandler.cpp

@@ -31,15 +31,17 @@ SpircHandler::SpircHandler(std::shared_ptr<cspot::Context> ctx) {
     }
   };
 
-  auto trackLoadedCallback = [this](std::shared_ptr<QueuedTrack> track) {
-    playbackState->setPlaybackState(PlaybackState::State::Playing);
+  auto trackLoadedCallback = [this](std::shared_ptr<QueuedTrack> track,
+                                    bool paused = false) {
+    playbackState->setPlaybackState(paused ? PlaybackState::State::Paused
+                                           : PlaybackState::State::Playing);
     playbackState->updatePositionMs(track->requestedPosition);
 
     this->notify();
 
-    // Send playback start event, unpause
+    // Send playback start event, pause/unpause per request
     sendEvent(EventType::PLAYBACK_START, (int)track->requestedPosition);
-    sendEvent(EventType::PLAY_PAUSE, false);
+    sendEvent(EventType::PLAY_PAUSE, paused);
   };
 
   this->ctx = ctx;
@@ -77,6 +79,12 @@ void SpircHandler::subscribeToMercury() {
 
 void SpircHandler::loadTrackFromURI(const std::string& uri) {}
 
+void SpircHandler::notifyAudioEnded() {
+  playbackState->updatePositionMs(0);
+  notify();
+  trackPlayer->resetState(true);
+}
+
 void SpircHandler::notifyAudioReachedPlayback() {
   int offset = 0;
 
@@ -142,7 +150,6 @@ void SpircHandler::handleFrame(std::vector<uint8_t>& data) {
       notify();
 
       sendEvent(EventType::SEEK, (int)playbackState->remoteFrame.position);
-      //sendEvent(EventType::FLUSH);
       break;
     }
     case MessageType_kMessageTypeVolume:
@@ -157,12 +164,14 @@ void SpircHandler::handleFrame(std::vector<uint8_t>& data) {
       setPause(false);
       break;
     case MessageType_kMessageTypeNext:
-      nextSong();
-      sendEvent(EventType::NEXT);
+      if (nextSong()) {
+        sendEvent(EventType::NEXT);
+      }
       break;
     case MessageType_kMessageTypePrev:
-      previousSong();
-      sendEvent(EventType::PREV);
+      if (previousSong()) {
+        sendEvent(EventType::PREV);
+      }
       break;
     case MessageType_kMessageTypeLoad: {
       this->trackPlayer->start();
@@ -192,15 +201,24 @@ void SpircHandler::handleFrame(std::vector<uint8_t>& data) {
       break;
     }
     case MessageType_kMessageTypeReplace: {
-      CSPOT_LOG(debug, "Got replace frame");
+      CSPOT_LOG(debug, "Got replace frame %d",
+                playbackState->remoteTracks.size());
       playbackState->syncWithRemote();
 
-      trackQueue->updateTracks(playbackState->remoteFrame.state.position_ms,
-                               false);
+      // 1st track is the current one, but update the position
+      bool cleared = trackQueue->updateTracks(
+          playbackState->remoteFrame.state.position_ms +
+              ctx->timeProvider->getSyncedTimestamp() -
+              playbackState->innerFrame.state.position_measured_at,
+          false);
+
       this->notify();
 
-      trackPlayer->resetState();
-      sendEvent(EventType::FLUSH);
+      // need to re-load all if streaming track is completed
+      if (cleared) {
+        sendEvent(EventType::FLUSH);
+        trackPlayer->resetState();
+      }
       break;
     }
     case MessageType_kMessageTypeShuffle: {
@@ -227,34 +245,22 @@ void SpircHandler::notify() {
   this->sendCmd(MessageType_kMessageTypeNotify);
 }
 
-void SpircHandler::skipSong(TrackQueue::SkipDirection dir) {
-  if (trackQueue->skipTrack(dir)) {
-    playbackState->setPlaybackState(PlaybackState::State::Playing);
-    notify();
+bool SpircHandler::skipSong(TrackQueue::SkipDirection dir) {
+  bool skipped = trackQueue->skipTrack(dir);
 
-    // Reset track state
-    trackPlayer->resetState();
+  // Reset track state
+  trackPlayer->resetState(!skipped);
 
-    sendEvent(EventType::PLAY_PAUSE, false);
-  } else {
-    playbackState->setPlaybackState(PlaybackState::State::Paused);
-    playbackState->updatePositionMs(0);
-    notify();
-
-    sendEvent(EventType::PLAY_PAUSE, true);
-  }
-
-  notify();
-
-  sendEvent(EventType::FLUSH);
+  // send NEXT or PREV event only when successful
+  return skipped;
 }
 
-void SpircHandler::nextSong() {
-  skipSong(TrackQueue::SkipDirection::NEXT);
+bool SpircHandler::nextSong() {
+  return skipSong(TrackQueue::SkipDirection::NEXT);
 }
 
-void SpircHandler::previousSong() {
-  skipSong(TrackQueue::SkipDirection::PREV);
+bool SpircHandler::previousSong() {
+  return skipSong(TrackQueue::SkipDirection::PREV);
 }
 
 std::shared_ptr<TrackPlayer> SpircHandler::getTrackPlayer() {

components/spotify/cspot/src/TrackPlayer.cpp

@@ -87,10 +87,11 @@ void TrackPlayer::stop() {
   std::scoped_lock lock(runningMutex);
 }
 
-void TrackPlayer::resetState() {
+void TrackPlayer::resetState(bool paused) {
   // Mark for reset
   this->pendingReset = true;
   this->currentSongPlaying = false;
+  this->startPaused = paused;
 
   std::scoped_lock lock(dataOutMutex);
 
@@ -119,7 +120,7 @@ void TrackPlayer::runTask() {
   while (isRunning) {
     // Ensure we even have any tracks to play
     if (!this->trackQueue->hasTracks() ||
-        (endOfQueueReached && trackQueue->isFinished())) {
+        (!pendingReset && endOfQueueReached && trackQueue->isFinished())) {
       this->trackQueue->playableSemaphore->twait(300);
       continue;
     }
@@ -184,7 +185,8 @@ void TrackPlayer::runTask() {
       }
 
       if (trackOffset == 0 && pendingSeekPositionMs == 0) {
-        this->trackLoaded(track);
+        this->trackLoaded(track, startPaused);
+        startPaused = false;
       }
 
       int32_t r =
@@ -199,6 +201,7 @@ void TrackPlayer::runTask() {
       }
 
       eof = false;
+      track->loading = true;
 
       CSPOT_LOG(info, "Playing");
 
@@ -253,6 +256,7 @@ void TrackPlayer::runTask() {
 
       // always move back to LOADING (ensure proper seeking after last track has been loaded)
       currentTrackStream = nullptr;
+      track->loading = false;
     }
 
     if (eof) {

components/spotify/cspot/src/TrackQueue.cpp

@@ -97,6 +97,8 @@ void TrackInfo::loadPbTrack(Track* pbTrack, const std::vector<uint8_t>& gid) {
     }
   }
 
+  number = pbTrack->has_number ? pbTrack->number : 0;
+  discNumber = pbTrack->has_disc_number ? pbTrack->disc_number : 0;
   duration = pbTrack->duration;
 }
 
@@ -113,6 +115,8 @@ void TrackInfo::loadPbEpisode(Episode* pbEpisode,
     imageUrl = "https://i.scdn.co/image/" + bytesToHexString(imageId);
   }
 
+  number = pbEpisode->has_number ? pbEpisode->number : 0;
+  discNumber = 0;
   duration = pbEpisode->duration;
 }
 
@@ -504,11 +508,18 @@ void TrackQueue::processTrack(std::shared_ptr<QueuedTrack> track) {
 
 bool TrackQueue::queueNextTrack(int offset, uint32_t positionMs) {
   const int requestedRefIndex = offset + currentTracksIndex;
+
   if (requestedRefIndex < 0 || requestedRefIndex >= currentTracks.size()) {
     return false;
   }
 
-  if (offset < 0) {
+  // in case we re-queue current track, make sure position is updated (0)
+  if (offset == 0 && preloadedTracks.size() &&
+      preloadedTracks[0]->ref == currentTracks[currentTracksIndex]) {
+    preloadedTracks.pop_front();
+  }
+
+  if (offset <= 0) {
     preloadedTracks.push_front(std::make_shared<QueuedTrack>(
         currentTracks[requestedRefIndex], ctx, positionMs));
   } else {
@@ -520,13 +531,30 @@ bool TrackQueue::queueNextTrack(int offset, uint32_t positionMs) {
 }
 
 bool TrackQueue::skipTrack(SkipDirection dir, bool expectNotify) {
-  bool canSkipNext = currentTracks.size() > currentTracksIndex + 1;
-  bool canSkipPrev = currentTracksIndex > 0;
+  bool skipped = true;
+  std::scoped_lock lock(tracksMutex);
 
-  if ((dir == SkipDirection::NEXT && canSkipNext) ||
-      (dir == SkipDirection::PREV && canSkipPrev)) {
-    std::scoped_lock lock(tracksMutex);
-    if (dir == SkipDirection::NEXT) {
+  if (dir == SkipDirection::PREV) {
+    uint64_t position =
+        !playbackState->innerFrame.state.has_position_ms
+            ? 0
+            : playbackState->innerFrame.state.position_ms +
+                  ctx->timeProvider->getSyncedTimestamp() -
+                  playbackState->innerFrame.state.position_measured_at;
+
+    if (currentTracksIndex > 0 && position < 3000) {
+      queueNextTrack(-1);
+
+      if (preloadedTracks.size() > MAX_TRACKS_PRELOAD) {
+        preloadedTracks.pop_back();
+      }
+
+      currentTracksIndex--;
+    } else {
+      queueNextTrack(0);
+    }
+  } else {
+    if (currentTracks.size() > currentTracksIndex + 1) {
       preloadedTracks.pop_front();
 
       if (!queueNextTrack(preloadedTracks.size() + 1)) {
@@ -535,15 +563,11 @@ bool TrackQueue::skipTrack(SkipDirection dir, bool expectNotify) {
 
       currentTracksIndex++;
     } else {
-      queueNextTrack(-1);
-
-      if (preloadedTracks.size() > MAX_TRACKS_PRELOAD) {
-        preloadedTracks.pop_back();
-      }
-
-      currentTracksIndex--;
+      skipped = false;
     }
+  }
 
+  if (skipped) {
     // Update frame data
     playbackState->innerFrame.state.playing_track_index = currentTracksIndex;
 
@@ -551,11 +575,9 @@ bool TrackQueue::skipTrack(SkipDirection dir, bool expectNotify) {
       // Reset position to zero
       notifyPending = true;
     }
-
-    return true;
   }
 
-  return false;
+  return skipped;
 }
 
 bool TrackQueue::hasTracks() {
@@ -569,18 +591,18 @@ bool TrackQueue::isFinished() {
   return currentTracksIndex >= currentTracks.size() - 1;
 }
 
-void TrackQueue::updateTracks(uint32_t requestedPosition, bool initial) {
+bool TrackQueue::updateTracks(uint32_t requestedPosition, bool initial) {
   std::scoped_lock lock(tracksMutex);
+  bool cleared = true;
+
+  // Copy requested track list
+  currentTracks = playbackState->remoteTracks;
+  currentTracksIndex = playbackState->innerFrame.state.playing_track_index;
 
   if (initial) {
     // Clear preloaded tracks
     preloadedTracks.clear();
 
-    // Copy requested track list
-    currentTracks = playbackState->remoteTracks;
-
-    currentTracksIndex = playbackState->innerFrame.state.playing_track_index;
-
     if (currentTracksIndex < currentTracks.size()) {
       // Push a song on the preloaded queue
       queueNextTrack(0, requestedPosition);
@@ -590,14 +612,25 @@ void TrackQueue::updateTracks(uint32_t requestedPosition, bool initial) {
     notifyPending = true;
 
     playableSemaphore->give();
+  } else if (preloadedTracks[0]->loading) {
+    // try to not re-load track if we are still loading it
+
+    // remove everything except first track
+    preloadedTracks.erase(preloadedTracks.begin() + 1, preloadedTracks.end());
+
+    // Push a song on the preloaded queue
+    CSPOT_LOG(info, "Keeping current track %d", currentTracksIndex);
+    queueNextTrack(1);
+
+    cleared = false;
   } else {
     // Clear preloaded tracks
     preloadedTracks.clear();
 
-    // Copy requested track list
-    currentTracks = playbackState->remoteTracks;
-
     // Push a song on the preloaded queue
+    CSPOT_LOG(info, "Re-loading current track");
     queueNextTrack(0, requestedPosition);
   }
+
+  return cleared;
 }

components/squeezelite/decode_external.c

@@ -288,6 +288,7 @@ static bool raop_sink_cmd_handler(raop_event_t event, va_list args)
 			output.frames_played = 0;
 			output.external = DECODE_RAOP;
 			output.state = OUTPUT_STOPPED;
+
 			if (decode.state != DECODE_STOPPED) decode.state = DECODE_ERROR;
 			LOG_INFO("resizing buffer %u", outputbuf->size);
 			break;
@@ -377,6 +378,7 @@ static bool cspot_cmd_handler(cspot_event_t cmd, va_list args)
 		output.state = OUTPUT_STOPPED;
         sink_state = SINK_ABORT;
 		_buf_flush(outputbuf);
+        _buf_limit(outputbuf, 0);
 		if (decode.state != DECODE_STOPPED) decode.state = DECODE_ERROR;
 		LOG_INFO("CSpot start track");
 		break;

components/squeezelite/displayer.c

@@ -216,7 +216,7 @@ static EXT_RAM_ATTR struct {
 
 static EXT_RAM_ATTR struct {
 	int mode;
-	int n, style, max;
+	int n, style, max, gain;
 	u16_t config;
 	struct bar_s bars[MAX_BARS] ;
 } led_visu;
@@ -687,6 +687,8 @@ void draw_VU(struct GDS_Device * display, int level, int x, int y, int width, bo
 static void grfe_handler( u8_t *data, int len) {
 	struct grfe_packet *pkt = (struct grfe_packet*) data;		
 	
+	if (!display) return;
+	
 	// we don't support transition, simply claim we're done
 	if (pkt->transition != 'c') {
 		LOG_INFO("Transition %c requested with offset %hu, param %d", pkt->transition, pkt->offset, pkt->param);
@@ -763,6 +765,8 @@ static void grfs_handler(u8_t *data, int len) {
 	int size = len - sizeof(struct grfs_packet);
 	int offset = htons(pkt->offset);
 	
+	if (!display) return;
+	
 	LOG_DEBUG("grfs s:%u d:%u p:%u sp:%u by:%hu m:%hu w:%hu o:%hu", 
 				(int) pkt->screen,
 				(int) pkt->direction,	// 1=left, 2=right
@@ -773,7 +777,7 @@ static void grfs_handler(u8_t *data, int len) {
 				htons(pkt->width),		// last column of animation that contains a "full" screen
 				htons(pkt->offset)		// offset if multiple packets are sent
 	);
-	
+
 	// new grfs frame, build scroller info
 	if (!offset) {	
 		// use the display as a general lock
@@ -818,6 +822,8 @@ static void grfs_handler(u8_t *data, int len) {
 static void grfg_handler(u8_t *data, int len) {
 	struct grfg_packet *pkt = (struct grfg_packet*) data;
 	
+	if (!display) return;
+	
 	LOG_DEBUG("gfrg s:%hu w:%hu (len:%u)", htons(pkt->screen), htons(pkt->width), len);
 
 	// full screen artwork or for small screen, visu has priority when full screen	
@@ -864,6 +870,8 @@ static void grfa_handler(u8_t *data, int len) {
 	int offset = htonl(pkt->offset);
 	int length = htonl(pkt->length);
 
+	if (!display) return;
+	
 	// when using full screen visualizer on small screen there is a brief overlay	
 	artwork.enable = (length != 0);
 	
@@ -1089,10 +1097,10 @@ static void displayer_update(void) {
 	if (led_display && led_visu.mode) {
 		// run built in visualizer effects
 		if (led_visu.mode == VISU_VUMETER) {
-			vu_scale(led_visu.bars, led_visu.max, meters.levels);
+			vu_scale(led_visu.bars, led_visu.gain, meters.levels);
 			led_vu_display(led_visu.bars[0].current, led_visu.bars[1].current, led_visu.max, led_visu.style);
 		} else if (led_visu.mode == VISU_SPECTRUM) { 
-			spectrum_scale(led_visu.n, led_visu.bars, led_visu.max, meters.samples);
+			spectrum_scale(led_visu.n, led_visu.bars, led_visu.gain, meters.samples);
 			uint8_t* p = (uint8_t*) led_data;
 			for (int i = 0; i < led_visu.n; i++) {
 				*p = led_visu.bars[i].current;
@@ -1100,7 +1108,7 @@ static void displayer_update(void) {
 			}
 			led_vu_spectrum(led_data, led_visu.max, led_visu.n, led_visu.style);
 		} else if (led_visu.mode == VISU_WAVEFORM) {
-			spectrum_scale(led_visu.n, led_visu.bars, led_visu.max, meters.samples);
+			spectrum_scale(led_visu.n, led_visu.bars, led_visu.gain, meters.samples);
 			led_vu_spin_dial(
 				led_visu.bars[led_visu.n-2].current,
 				led_visu.bars[(led_visu.n/2)+1].current * 50 / led_visu.max,
@@ -1277,8 +1285,8 @@ static void ledv_handler( u8_t *data, int len) {
 	led_visu.mode = pkt->which;
 	led_visu.style = pkt->style;
 	led_visu.max = pkt->bright;
+	led_visu.gain = led_visu.max * led_vu_scale() / 100; 
 
-	led_vu_clear();
 	if (led_visu.mode) {
 		if (led_visu.mode == VISU_SPECTRUM) {
 			led_visu.n = (led_visu.config < MAX_BARS) ? led_visu.config : MAX_BARS;
@@ -1293,8 +1301,10 @@ static void ledv_handler( u8_t *data, int len) {
 		// reset bars maximum
 		for (int i = led_visu.n; --i >= 0;) led_visu.bars[i].max = 0;
 		
-		LOG_INFO("LED Visualizer mode %u with bars:%u max:%u style:%d", led_visu.mode, led_visu.n, led_visu.max, led_visu.style);
+		LOG_INFO("LED Visualizer mode %u with bars:%u max:%u style:%d gain:%u", led_visu.mode, led_visu.n, led_visu.max, led_visu.style, led_visu.gain);
 	} else {
+		led_vu_clear();
+	
 		LOG_INFO("Stopping led visualizer");
 	}	
 	

components/squeezelite/equalizer.c

@@ -22,7 +22,8 @@ static EXT_RAM_ATTR struct {
 	void *handle;
     float loudness, volume;
     uint32_t samplerate;
-	float gain[EQ_BANDS], loudness_gain[EQ_BANDS];
+	int8_t gain[EQ_BANDS];
+	float loudness_gain[EQ_BANDS];
 	bool update;
 } equalizer;
 
@@ -151,6 +152,8 @@ void equalizer_set_gain(int8_t *gain) {
     char config[EQ_BANDS * 4 + 1] = { };
 	int n = 0;
     
+    if (memcmp(equalizer.gain, gain, EQ_BANDS) != 0) equalizer.update = true;
+    
     for (int i = 0; i < EQ_BANDS; i++) {
 		equalizer.gain[i] = gain[i];
 		n += sprintf(config + n, "%d,", gain[i]);
@@ -159,9 +162,6 @@ void equalizer_set_gain(int8_t *gain) {
 	config[n-1] = '\0';
 	config_set_value(NVS_TYPE_STR, "equalizer", config);
     
-    // update only if something changed
-    if (!memcmp(equalizer.gain, gain, EQ_BANDS)) equalizer.update = true;
-
     LOG_INFO("equalizer gain %s", config);
 #else
     LOG_INFO("no equalizer with 32 bits samples");

components/squeezelite/external/dac_external.c

@@ -14,6 +14,7 @@
 #include <driver/i2s.h>
 #include "driver/i2c.h"
 #include "esp_log.h"
+#include "gpio_exp.h"
 #include "cJSON.h"
 #include "platform_config.h"
 #include "adac.h"
@@ -60,7 +61,6 @@ static bool init(char *config, int i2c_port_num, i2s_config_t *i2s_config, bool
 	char *p;	
 	
 	i2c_addr = adac_init(config, i2c_port_num);
-	if (!i2c_addr) return true;
 	
 	ESP_LOGI(TAG, "DAC on I2C @%d", i2c_addr);
 	
@@ -123,9 +123,29 @@ bool i2c_json_execute(char *set) {
 	if (!json_set) return true;
 	
 	cJSON_ArrayForEach(item, json_set) {
-		cJSON *reg = cJSON_GetObjectItemCaseSensitive(item, "reg");
+        cJSON *action;
+        
+        // is this a delay
+        if ((action = cJSON_GetObjectItemCaseSensitive(item, "delay")) != NULL) {
+            vTaskDelay(pdMS_TO_TICKS(action->valueint));
+            ESP_LOGI(TAG, "DAC waiting %d ms", action->valueint);
+            continue;
+        }
+        
+        // is this a gpio toggle
+        if ((action = cJSON_GetObjectItemCaseSensitive(item, "gpio")) != NULL) {
+            cJSON *level = cJSON_GetObjectItemCaseSensitive(item, "level");
+            ESP_LOGI(TAG, "set GPIO %d at %d", action->valueint, level->valueint);
+            if (action->valueint < GPIO_NUM_MAX) gpio_pad_select_gpio(action->valueint);
+            gpio_set_direction_x(action->valueint, GPIO_MODE_OUTPUT);
+            gpio_set_level_x(action->valueint, level->valueint);
+            continue;
+        }
+                    
+		action= cJSON_GetObjectItemCaseSensitive(item, "reg");
 		cJSON *val = cJSON_GetObjectItemCaseSensitive(item, "val");
 		
+        // this is gpio register setting or crap
 		if (cJSON_IsArray(val)) {
 			cJSON *value;			
 			uint8_t *data = malloc(cJSON_GetArraySize(val));
@@ -137,23 +157,23 @@ bool i2c_json_execute(char *set) {
 				data[count++] = value->valueint;		
 			}
 			
-			adac_write(i2c_addr, reg->valueint, data, count);
+			adac_write(i2c_addr, action->valueint, data, count);
 			free(data);			
 		} else {
 			cJSON *mode = cJSON_GetObjectItemCaseSensitive(item, "mode");
 
-			if (!reg || !val) continue;
+			if (!action || !val) continue;
 
 			if (!mode) {
-				adac_write_byte(i2c_addr, reg->valueint, val->valueint);
+				adac_write_byte(i2c_addr, action->valueint, val->valueint);
 			} else if (!strcasecmp(mode->valuestring, "or")) {
-				uint8_t data = adac_read_byte(i2c_addr,reg->valueint);
+				uint8_t data = adac_read_byte(i2c_addr, action->valueint);
 				data |= (uint8_t) val->valueint;
-				adac_write_byte(i2c_addr, reg->valueint, data);
+				adac_write_byte(i2c_addr, action->valueint, data);
 			} else if (!strcasecmp(mode->valuestring, "and")) {
-				uint8_t data = adac_read_byte(i2c_addr, reg->valueint);
+				uint8_t data = adac_read_byte(i2c_addr, action->valueint);
 				data &= (uint8_t) val->valueint;
-				adac_write_byte(i2c_addr, reg->valueint, data);
+				adac_write_byte(i2c_addr, action->valueint, data);
 			}
 		}
 	}

components/squeezelite/flac.c

@@ -70,6 +70,7 @@ struct flac {
 	);
 	FLAC__bool (* FLAC__stream_decoder_process_single)(FLAC__StreamDecoder *decoder);
 	FLAC__StreamDecoderState (* FLAC__stream_decoder_get_state)(const FLAC__StreamDecoder *decoder);
+    FLAC__bool (*FLAC__stream_decoder_set_ogg_chaining)(FLAC__StreamDecoder* decoder, FLAC__bool allow);
 #endif
 };
 
@@ -121,6 +122,9 @@ static FLAC__StreamDecoderReadStatus read_cb(const FLAC__StreamDecoder *decoder,
 	_buf_inc_readp(streambuf, bytes);
 	UNLOCK_S;
 
+    // give some time for stream to acquire data otherwise flac will hammer us
+    if (!end && !bytes) usleep(100 * 1000);
+
 	*want = bytes;
 
 	return end ? FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM : FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
@@ -137,8 +141,8 @@ static FLAC__StreamDecoderWriteStatus write_cb(const FLAC__StreamDecoder *decode
 	FLAC__int32 *rptr = (FLAC__int32 *)buffer[channels > 1 ? 1 : 0];
 	
 	if (decode.new_stream) {
+		LOG_INFO("setting track_start");        
 		LOCK_O;
-		LOG_INFO("setting track_start");
 		output.track_start = outputbuf->writep;
 		decode.new_stream = false;
 
@@ -253,6 +257,7 @@ static void flac_open(u8_t sample_size, u8_t sample_rate, u8_t channels, u8_t en
 	
 	if ( f->container == 'o' ) {
 		LOG_INFO("ogg/flac container - using init_ogg_stream");
+        FLAC(f, stream_decoder_set_ogg_chaining, f->decoder, true);
 		FLAC(f, stream_decoder_init_ogg_stream, f->decoder, &read_cb, NULL, NULL, NULL, NULL, &write_cb, NULL, &error_cb, NULL);
 	} else {
 		FLAC(f, stream_decoder_init_stream, f->decoder, &read_cb, NULL, NULL, NULL, NULL, &write_cb, NULL, &error_cb, NULL);
@@ -295,6 +300,7 @@ static bool load_flac() {
 	f->FLAC__stream_decoder_init_ogg_stream = dlsym(handle, "FLAC__stream_decoder_init_ogg_stream");
 	f->FLAC__stream_decoder_process_single = dlsym(handle, "FLAC__stream_decoder_process_single");
 	f->FLAC__stream_decoder_get_state = dlsym(handle, "FLAC__stream_decoder_get_state");
+    f->FLAC__stream_decoder_set_ogg_chaining = dlsym(handle, "FLAC__stream_decoder_set_ogg_chaining");
 
 	if ((err = dlerror()) != NULL) {
 		LOG_INFO("dlerror: %s", err);		

components/squeezelite/opus.c

@@ -44,7 +44,7 @@
 #define MAX_OPUS_FRAMES 5760
 
 struct opus {
-	enum {OGG_SYNC, OGG_ID_HEADER, OGG_COMMENT_HEADER} status;
+	enum { OGG_ID_HEADER, OGG_COMMENT_HEADER } status;
 	ogg_stream_state state;
 	ogg_packet packet;
 	ogg_sync_state sync;
@@ -131,95 +131,109 @@ static opus_uint32 parse_uint32(const unsigned char* _data) {
 		(opus_uint32)_data[2] << 16 | (opus_uint32)_data[3] << 24;
 }
 
-static int get_opus_packet(void) {
+static int get_audio_packet(void) {
 	int status, packet = -1;
 
 	LOCK_S;
 	size_t bytes = min(_buf_used(streambuf), _buf_cont_read(streambuf));
-	
+
 	while (!(status = OG(&go, stream_packetout, &u->state, &u->packet)) && bytes) {
-        
-        // if sync_pageout (or sync_pageseek) is not called here, sync builds ups
-        while (!(status = OG(&go, sync_pageout, &u->sync, &u->page)) && bytes) {
+
+		// if sync_pageout (or sync_pageseek) is not called here, sync buffers build up
+		while (!(status = OG(&go, sync_pageout, &u->sync, &u->page)) && bytes) {
 			size_t consumed = min(bytes, 4096);
-			char* buffer = OG(&gu, sync_buffer, &u->sync, consumed);
+			char* buffer = OG(&go, sync_buffer, &u->sync, consumed);
 			memcpy(buffer, streambuf->readp, consumed);
-			OG(&gu, sync_wrote, &u->sync, consumed);
+			OG(&go, sync_wrote, &u->sync, consumed);
 
 			_buf_inc_readp(streambuf, consumed);
 			bytes -= consumed;
-        }
+		}
 
-		// if we have a new page, put it in
-		if (status)	OG(&go, stream_pagein, &u->state, &u->page);
-	} 
-    
-    // only return a negative value when true end of streaming is reached
-    if (status > 0) packet = status;
-    else if (stream.state > DISCONNECT || _buf_used(streambuf)) packet = 0;
+		// if we have a new page, put it in and reset serialno at BoS
+		if (status) {
+			OG(&go, stream_pagein, &u->state, &u->page);
+			if (OG(&go, page_bos, &u->page)) OG(&go, stream_reset_serialno, &u->state, OG(&go, page_serialno, &u->page));
+		}
+	}
+
+	/* discard header packets. With no packet, we return a negative value 
+	 * when there is really nothing more to proceed */
+	if (status > 0 && memcmp(u->packet.packet, "OpusHead", 8) && memcmp(u->packet.packet, "OpusTags", 8)) packet = status;
+	else if (stream.state > DISCONNECT || _buf_used(streambuf)) packet = 0;
 
 	UNLOCK_S;
 	return packet;
 }
 
 static int read_opus_header(void) {
-	int status = 0;
-    bool fetch = true;
+	int done = 0;
+	bool fetch = true;
 
 	LOCK_S;
 	size_t bytes = min(_buf_used(streambuf), _buf_cont_read(streambuf));
 
-	while (bytes && !status) {
-		// first fetch a page if we need one
-		if (fetch) {
+	while (bytes && !done) {
+		int status;
+
+		// get aligned to a page and ready to bring it in
+		do {
 			size_t consumed = min(bytes, 4096);
-			char* buffer = OG(&gu, sync_buffer, &u->sync, consumed);
+
+			char* buffer = OG(&go, sync_buffer, &u->sync, consumed);
 			memcpy(buffer, streambuf->readp, consumed);
-			OG(&gu, sync_wrote, &u->sync, consumed);
+			OG(&go, sync_wrote, &u->sync, consumed);
 
 			_buf_inc_readp(streambuf, consumed);
 			bytes -= consumed;
 
-			if (!OG(&gu, sync_pageseek, &u->sync, &u->page)) continue;
-		}
+			status = fetch ? OG(&go, sync_pageout, &u->sync, &u->page) :
+							 OG(&go, sync_pageseek, &u->sync, &u->page);
+		} while (bytes && status <= 0);
 
-		switch (u->status) {
-		case OGG_SYNC:
-			u->status = OGG_ID_HEADER;
-			OG(&gu, stream_init, &u->state, OG(&gu, page_serialno, &u->page));
-            fetch = false;
-			break;
-		case OGG_ID_HEADER:
-			status = OG(&gu, stream_pagein, &u->state, &u->page);
-			if (OG(&gu, stream_packetout, &u->state, &u->packet)) {
-				if (u->packet.bytes < 19 || memcmp(u->packet.packet, "OpusHead", 8)) {
-					LOG_ERROR("wrong opus header packet (size:%u)", u->packet.bytes);
-					status = -100;
-					break;
-				}
-				u->status = OGG_COMMENT_HEADER;                
+		// nothing has been found and we have no more bytes, come back later
+		if (status <= 0) break;
+
+		// always set stream serialno if we have a new one (no multiplexed streams)
+		if (OG(&go, page_bos, &u->page)) OG(&go, stream_reset_serialno, &u->state, OG(&go, page_serialno, &u->page));
+
+		// bring new page in if we want it (otherwise we're just skipping)
+		if (fetch) OG(&go, stream_pagein, &u->state, &u->page);
+
+		// no need for a switch...case
+		if (u->status == OGG_ID_HEADER) {
+			// we need the id packet, get more pages if we don't
+			if (OG(&go, stream_packetout, &u->state, &u->packet) <= 0) continue;
+			
+			// make sure this is a valid packet
+			if (u->packet.bytes < 19 || memcmp(u->packet.packet, "OpusHead", 8)) {
+				LOG_ERROR("wrong header packet (size:%u)", u->packet.bytes);
+				done = -100;
+			} else {
+				u->status = OGG_COMMENT_HEADER;
 				u->channels = u->packet.packet[9];
 				u->pre_skip = parse_uint16(u->packet.packet + 10);
 				u->rate = parse_uint32(u->packet.packet + 12);
 				u->gain = parse_int16(u->packet.packet + 16);
 				u->decoder = OP(&gu, decoder_create, 48000, u->channels, &status);
+				fetch = false;
 				if (!u->decoder || status != OPUS_OK) {
 					LOG_ERROR("can't create decoder %d (channels:%u)", status, u->channels);
 				}
+				else {
+					LOG_INFO("codec up and running");
+				}
 			}
-			fetch = true;
-			break;
-		case OGG_COMMENT_HEADER:
-			// skip packets to consume VorbisComment. With opus, header packets align on pages
-			status = OG(&gu, page_packets, &u->page);
-			break;
-		default:
-			break;
+		} else if (u->status == OGG_COMMENT_HEADER) {
+			// don't consume VorbisComment which could be a huge packet, just skip it
+			if (!OG(&go, page_packets, &u->page)) continue;
+            LOG_INFO("comment skipped successfully");
+			done = 1;
 		}
 	}
 
 	UNLOCK_S;
-	return status;
+	return done;
 }
 
 static decode_state opus_decompress(void) {
@@ -271,7 +285,7 @@ static decode_state opus_decompress(void) {
 		memcpy(write_buf, u->overbuf, u->overframes * BYTES_PER_FRAME);
 		n = u->overframes;
 		u->overframes = 0;
-	} else if ((packet = get_opus_packet()) > 0) {
+	} else if ((packet = get_audio_packet()) > 0) {
 		if (frames < MAX_OPUS_FRAMES) {
 			// don't have enough contiguous space, use the overflow buffer
 			n = OP(&gu, decode, u->decoder, u->packet.packet, u->packet.bytes, (opus_int16*) u->overbuf, MAX_OPUS_FRAMES, 0);
@@ -286,7 +300,7 @@ static decode_state opus_decompress(void) {
 			 * outputbuf and streambuf for maybe a long time while we process it all, so don't do that */
 			n = OP(&gu, decode, u->decoder, u->packet.packet, u->packet.bytes, (opus_int16*) write_buf, frames, 0);
 		}
-	} else if (!packet && !OG(&go, page_eos, &u->page)) {
+	} else if (!packet) {
 		UNLOCK_O_direct;
 		return DECODE_RUNNING;
 	}
@@ -342,7 +356,7 @@ static decode_state opus_decompress(void) {
 
 	} else {
 
-		LOG_INFO("opus decode error: %d", n);
+		LOG_INFO("decode error: %d", n);
 		UNLOCK_O_direct;
 		return DECODE_COMPLETE;
 	}
@@ -357,12 +371,12 @@ static void opus_open(u8_t size, u8_t rate, u8_t chan, u8_t endianness) {
     
 	if (!u->overbuf) u->overbuf = malloc(MAX_OPUS_FRAMES * BYTES_PER_FRAME);
     
-    u->status = OGG_SYNC;
+    u->status = OGG_ID_HEADER;
 	u->overframes = 0;
-	
-	OG(&gu, sync_clear, &u->sync);
-    OG(&gu, stream_clear, &u->state);
-	OG(&gu, stream_init, &u->state, -1);
+
+    OG(&go, stream_clear, &u->state);	
+    OG(&go, sync_clear, &u->sync);
+    OG(&go, stream_init, &u->state, -1);    
 }
 
 static void opus_close(void) {  
@@ -372,8 +386,8 @@ static void opus_close(void) {
 	free(u->overbuf);
     u->overbuf = NULL;
     
-	OG(&gu, stream_clear, &u->state);
-	OG(&gu, sync_clear, &u->sync);
+    OG(&go, stream_clear, &u->state);
+    OG(&go, sync_clear, &u->sync);
 }
 
 static bool load_opus(void) {
@@ -394,7 +408,7 @@ static bool load_opus(void) {
 	}
 	
 	g_handle->ogg_stream_clear = dlsym(g_handle->handle, "ogg_stream_clear");
-	g_handle->.ogg_stream_reset = dlsym(g_handle->handle, "ogg_stream_reset");
+	g_handle->ogg_stream_reset = dlsym(g_handle->handle, "ogg_stream_reset");
 	g_handle->ogg_stream_eos = dlsym(g_handle->handle, "ogg_stream_eos");
 	g_handle->ogg_stream_reset_serialno = dlsym(g_handle->handle, "ogg_stream_reset_serialno");
 	g_handle->ogg_sync_clear = dlsym(g_handle->handle, "ogg_sync_clear");

components/squeezelite/output.c

@@ -60,7 +60,7 @@ frames_t _output_frames(frames_t avail) {
 	silence = false;
 
 	// start when threshold met
-	if (output.state == OUTPUT_BUFFER && (frames * BYTES_PER_FRAME) > output.threshold * output.next_sample_rate / 10 && frames > output.start_frames) {
+	if (output.state == OUTPUT_BUFFER && frames > output.threshold * output.next_sample_rate / 10 && frames > output.start_frames) {
 		output.state = OUTPUT_RUNNING;
 		LOG_INFO("start buffer frames: %u", frames);
 		wake_controller();
@@ -443,7 +443,7 @@ void output_close_common(void) {
 }
 
 void output_flush(void) {
-	LOG_INFO("flush output buffer");
+	LOG_INFO("flush output buffer (full)");
 	buf_flush(outputbuf);
 	LOCK;
 	output.fade = FADE_INACTIVE;
@@ -457,3 +457,15 @@ void output_flush(void) {
 	output.frames_played = 0;
 	UNLOCK;
 }
+
+bool output_flush_streaming(void) {
+	LOG_INFO("flush output buffer (streaming)");
+	LOCK;
+	bool flushed = output.track_start != NULL;
+	if (output.track_start) {
+		outputbuf->writep = output.track_start;
+		output.track_start = NULL;
+	}
+	UNLOCK;
+	return flushed;
+}

components/squeezelite/output_bt.c

@@ -139,8 +139,11 @@ static int _write_frames(frames_t out_frames, bool silence, s32_t gainL, s32_t g
 		u8_t *buf = silencebuf;
 		memcpy(btout + oframes * BYTES_PER_FRAME, buf, out_frames * BYTES_PER_FRAME);
 	}
-	
-	output_visu_export(btout + oframes * BYTES_PER_FRAME, out_frames, output.current_sample_rate, silence, (gainL  + gainR) / 2);
+
+    // don't update visu if we don't have enough data in buffer (500 ms)
+    if (silence || _buf_used(outputbuf) >  BYTES_PER_FRAME * output.current_sample_rate / 2) {
+    	output_visu_export(btout + oframes * BYTES_PER_FRAME, out_frames, output.current_sample_rate, silence, (gainL  + gainR) / 2);
+    }
 	
 	oframes += out_frames;
 

components/squeezelite/output_i2s.c

@@ -222,6 +222,25 @@ static void set_i2s_pin(char *config, i2s_pin_config_t *pin_config) {
 #endif    
 }
 
+/* When a panic occurs during playback, the I2S interface can produce a loud noise burst.
+ * This code runs just before the system panic handler to "emergency stop" the I2S iterface
+ * to prevent the noise burst from happening.  Note that when this code is called the system
+ * has already crashed, so no need to disable interrupts, acquire locks, or otherwise be nice.
+ *
+ * This code makes use of the linker --wrap feature to intercept the call to esp_panic_handler.
+ */
+
+void __real_esp_panic_handler(void*);
+
+void __wrap_esp_panic_handler (void* info) {
+    esp_rom_printf("I2S abort!\r\n");
+    
+    i2s_stop(CONFIG_I2S_NUM);
+    
+    /* Call the original panic handler function to finish processing this error */
+    __real_esp_panic_handler(info);
+}
+
 /****************************************************************************************
  * Initialize the DAC output
  */
@@ -439,7 +458,7 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
 		static DRAM_ATTR StaticTask_t xTaskBuffer __attribute__ ((aligned (4)));
 		static EXT_RAM_ATTR StackType_t xStack[OUTPUT_THREAD_STACK_SIZE] __attribute__ ((aligned (4)));
 		output_i2s_task = xTaskCreateStaticPinnedToCore( (TaskFunction_t) output_thread_i2s, "output_i2s", OUTPUT_THREAD_STACK_SIZE, 
-											  NULL, CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT + 1, xStack, &xTaskBuffer, 0 );
+											  NULL, CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT + 10, xStack, &xTaskBuffer, 0 );
 	}
 }
 
@@ -485,8 +504,8 @@ static int _i2s_write_frames(frames_t out_frames, bool silence, s32_t gainL, s32
 		memcpy(obuf + oframes * BYTES_PER_FRAME, silencebuf, out_frames * BYTES_PER_FRAME);
 	}
 
-	// don't update visu if we don't have enough data in buffer
-	if (silence || output.external || _buf_used(outputbuf) > outputbuf->size >> 2 ) {
+	// don't update visu if we don't have enough data in buffer (500 ms)
+	if (silence || _buf_used(outputbuf) >  BYTES_PER_FRAME * output.current_sample_rate / 2) {
 		output_visu_export(obuf + oframes * BYTES_PER_FRAME, out_frames, output.current_sample_rate, silence, (gainL + gainR) / 2);
 	}
 		
@@ -744,7 +763,7 @@ static void IRAM_ATTR spdif_convert(ISAMPLE_T *src, size_t frames, u32_t *dst) {
     
     // we assume frame == 0 as well...
     if (!src) {
-        count =  192;
+        count = 0;
         vu = VUCP24[0];
     }
     
@@ -757,7 +776,7 @@ static void IRAM_ATTR spdif_convert(ISAMPLE_T *src, size_t frames, u32_t *dst) {
 
         if (!count--) {            
 			*dst++ = (vu << 24) | (PREAMBLE_B << 16) | 0xCCCC;
-			count = 192;
+			count = 191;
 		} else {
 			*dst++ = (vu << 24) | (PREAMBLE_M << 16) | 0xCCCC;
 		}
@@ -771,7 +790,7 @@ static void IRAM_ATTR spdif_convert(ISAMPLE_T *src, size_t frames, u32_t *dst) {
 
         if (!count--) {
 			*dst++ = (vu << 24) | (PREAMBLE_B << 16) | aux;
-			count = 192;
+			count = 191;
 		} else {
 			*dst++ = (vu << 24) | (PREAMBLE_M << 16) | aux;
 		}

components/squeezelite/slimproto.c

@@ -305,8 +305,18 @@ static void process_strm(u8_t *pkt, int len) {
 		sendSTAT("STMt", strm->replay_gain); // STMt replay_gain is no longer used to track latency, but support it
 		break;
 	case 'f':	
+    	{
+            decode_flush(false);
+            bool flushed = false;            
+            if (!output.external) flushed |= output_flush_streaming();
+			// we can have fully finished the current streaming, that's still a flush
+			if (stream_disconnect() || flushed) sendSTAT("STMf", 0);
+			buf_flush(streambuf);
+            output.stop_time = gettime_ms();
+			break;
+		}
 	case 'q':
-		decode_flush(strm->command == 'q');
+		decode_flush(true);
 		if (!output.external) output_flush();
 		status.frames_played = 0;
 		if (stream_disconnect() && strm->command == 'f') sendSTAT("STMf", 0);
@@ -383,7 +393,9 @@ static void process_strm(u8_t *pkt, int len) {
 				stream_file(header, header_len, strm->threshold * 1024);
 				autostart -= 2;
 			} else {
-				stream_sock(ip, port, header, header_len, strm->threshold * 1024, autostart >= 2);
+				stream_sock(ip, port, strm->flags & 0x20, 
+                            strm->format == 'o' || strm->format == 'u' || (strm->format == 'f' && strm->pcm_sample_size == 'o'),
+                            header, header_len, strm->threshold * 1024, autostart >= 2);
 			}
 			sendSTAT("STMc", 0);
 			sentSTMu = sentSTMo = sentSTMl = false;
@@ -402,8 +414,8 @@ static void process_strm(u8_t *pkt, int len) {
 			output.fade_secs = strm->transition_period;
 			output.invert = (strm->flags & 0x03) == 0x03;
 			output.channels = (strm->flags & 0x0c) >> 2;
+			UNLOCK_O;            
 			LOG_DEBUG("set fade: %u, channels: %u, invert: %u", output.fade_mode, output.channels, output.invert);
-			UNLOCK_O;
 		}
 		break;
 	default:
@@ -982,8 +994,8 @@ void slimproto(log_level level, char *server, u8_t mac[6], const char *name, con
 			// in embedded we give up after a while no matter what
 			if (++failed_connect > MAX_SERVER_RETRIES && !server) {
 				slimproto_ip = serv_addr.sin_addr.s_addr = discover_server(NULL, MAX_SERVER_RETRIES);
-				if (!slimproto_ip) return;
-			} else if (reconnect && MAX_SERVER_RETRIES && failed_connect > 5 * MAX_SERVER_RETRIES) return;
+				if (!slimproto_ip && !output.external) return;
+			} else if (reconnect && MAX_SERVER_RETRIES && failed_connect > 5 * MAX_SERVER_RETRIES && !output.external) return;
 #else
 			// rediscover server if it was not set at startup or exit 
 			if (!server && ++failed_connect > 5) {

components/squeezelite/squeezelite.h

@@ -585,7 +585,7 @@ struct streamstate {
 void stream_init(log_level level, unsigned stream_buf_size);
 void stream_close(void);
 void stream_file(const char *header, size_t header_len, unsigned threshold);
-void stream_sock(u32_t ip, u16_t port, const char *header, size_t header_len, unsigned threshold, bool cont_wait);
+void stream_sock(u32_t ip, u16_t port, bool use_ssl, bool use_ogg, const char *header, size_t header_len, unsigned threshold, bool cont_wait);
 bool stream_disconnect(void);
 
 // decode.c
@@ -727,6 +727,7 @@ struct outputstate {
 void output_init_common(log_level level, const char *device, unsigned output_buf_size, unsigned rates[], unsigned idle);
 void output_close_common(void);
 void output_flush(void);
+bool output_flush_streaming(void);
 // _* called with mutex locked
 frames_t _output_frames(frames_t avail);
 void _checkfade(bool);

components/squeezelite/stream.c

@@ -59,7 +59,24 @@ is enough and much faster than a mutex
 static bool polling;
 static sockfd fd;
 
-struct streamstate stream;
+struct EXT_RAM_ATTR streamstate stream;
+
+static EXT_RAM_ATTR struct {
+    bool flac;
+    u64_t serial;
+	enum { OGG_OFF, OGG_SYNC, OGG_HEADER, OGG_SEGMENTS, OGG_PAGE } state;
+	size_t want, miss, match;
+	u8_t* data, segments[255];
+#pragma pack(push, 1)    
+	struct {
+		char pattern[4];
+		u8_t version, type;
+		u64_t granule;
+		u32_t serial, page, checksum;
+		u8_t count;
+	} header;
+#pragma pack(pop)    
+} ogg;
 
 #if USE_SSL
 static SSL_CTX *SSLctx;
@@ -113,7 +130,6 @@ static int _poll(SSL *ssl, struct pollfd *pollinfo, int timeout) {
 }
 #endif
 
-
 static bool send_header(void) {
 	char *ptr = stream.header;
 	int len = stream.header_len;
@@ -148,6 +164,8 @@ static bool running = true;
 static void _disconnect(stream_state state, disconnect_code disconnect) {
 	stream.state = state;
 	stream.disconnect = disconnect;
+    if (ogg.state == OGG_PAGE && ogg.data) free(ogg.data);
+    ogg.data = NULL;
 #if USE_SSL
 	if (ssl) {
 		SSL_shutdown(ssl);
@@ -160,6 +178,139 @@ static void _disconnect(stream_state state, disconnect_code disconnect) {
 	wake_controller();
 }
 
+static size_t memfind(const u8_t* haystack, size_t n, const char* needle, size_t len, size_t* offset) {
+	size_t i;
+	for (i = 0; i < n && *offset != len; i++) *offset = (haystack[i] == needle[*offset]) ? *offset + 1 : 0;
+	return i;
+}
+
+/* https://xiph.org/ogg/doc/framing.html 
+ * https://xiph.org/flac/ogg_mapping.html
+ * https://xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-610004.2 */
+ 
+static void stream_ogg(size_t n) {
+	if (ogg.state == OGG_OFF) return;
+	u8_t* p = streambuf->writep;
+
+	while (n) {
+		size_t consumed = min(ogg.miss, n);
+
+		// copy as many bytes as possible and come back later if we do'nt have enough
+		if (ogg.data) {
+			memcpy(ogg.data + ogg.want - ogg.miss, p, consumed);
+			ogg.miss -= consumed;
+			if (ogg.miss) return;
+		}
+
+		// we have what we want, let's parse
+		switch (ogg.state) {
+		case OGG_SYNC: {
+			ogg.miss -= consumed;
+			if (consumed) break;
+
+			// we have to memorize position in case any of last 3 bytes match...
+			size_t pos = memfind(p, n, "OggS", 4, &ogg.match);
+			if (ogg.match == 4) {
+				consumed = pos - ogg.match;
+				ogg.state = OGG_HEADER;
+				ogg.miss = ogg.want = sizeof(ogg.header);
+				ogg.data = (u8_t*) &ogg.header;
+				ogg.match = 0;
+			} else {
+                if (!ogg.match) LOG_INFO("OggS not at expected position %zu/%zu", pos, n);
+                LOG_INFO("OggS not at expected position %zu/%zu", pos, n);
+				return;
+			}
+			break;
+		}
+		case OGG_HEADER:
+			if (!memcmp(ogg.header.pattern, "OggS", 4)) {
+				ogg.miss = ogg.want = ogg.header.count;
+				ogg.data = ogg.segments;
+				ogg.state = OGG_SEGMENTS;
+			} else {
+				ogg.state = OGG_SYNC;
+				ogg.data = NULL;
+			}
+			break;
+		case OGG_SEGMENTS:
+			// calculate size of page using lacing values
+			for (size_t i = 0; i < ogg.want; i++) ogg.miss += ogg.data[i];
+			ogg.want = ogg.miss;
+            
+            // acquire serial number when we are looking for headers and hit a bos
+			if (ogg.serial == ULLONG_MAX && (ogg.header.type & 0x02)) ogg.serial = ogg.header.serial;
+
+			// we have overshot and missed header, reset serial number to restart search (O and -1 are le/be)
+			if (ogg.header.serial == ogg.serial && ogg.header.granule && ogg.header.granule != -1) ogg.serial = ULLONG_MAX;
+
+			// not our serial (the above protected us from granule > 0)
+			if (ogg.header.serial != ogg.serial) {
+				// otherwise, jump over data
+				ogg.state = OGG_SYNC;
+				ogg.data = NULL;
+			} else {
+				ogg.state = OGG_PAGE;
+				ogg.data = malloc(ogg.want);
+			}
+			break;
+		case OGG_PAGE: {
+			char** tag = (char* []){ "\x3vorbis", "OpusTags", NULL };
+			size_t ofs = 0;
+
+			/* with OggFlac, we need the next page (packet) - VorbisComment is wrapped into a FLAC_METADATA
+			 * and except with vorbis, comment packet starts a new page but even in vorbis, it won't span
+			 * accross multiple pages */
+			if (ogg.flac) ofs = 4;
+			else if (!memcmp(ogg.data, "\x7f""FLAC", 5)) ogg.flac = true;
+			else for (size_t n = 0; *tag; tag++, ofs = 0) if ((ofs = memfind(ogg.data, ogg.want, *tag, strlen(*tag), &n)) && n == strlen(*tag)) break;
+	
+			if (ofs) {			
+				// u32:len,char[]:vendorId, u32:N, N x (u32:len,char[]:comment)
+				char* p = (char*) ogg.data + ofs;
+				p += *p + 4;
+				u32_t count = *p;
+				p += 4;
+
+				// LMS metadata format for Ogg is "Ogg", N x (u16:len,char[]:comment)
+				memcpy(stream.header, "Ogg", 3);
+				stream.header_len = 3;
+
+				for (u32_t len; count--; p += len) {
+					len = *p;
+					p += 4;
+
+					// only report what we use and don't overflow (network byte order)
+					if (!strncasecmp(p, "TITLE=", 6) || !strncasecmp(p, "ARTIST=", 7) || !strncasecmp(p, "ALBUM=", 6)) {
+						if (stream.header_len + len > MAX_HEADER) break;
+						stream.header[stream.header_len++] = len >> 8;
+						stream.header[stream.header_len++] = len;
+						memcpy(stream.header + stream.header_len, p, len);
+						stream.header_len += len;
+                        LOG_INFO("metadata: %.*s", len, p);
+					}
+				}
+
+                ogg.flac = false;
+                ogg.serial = ULLONG_MAX;
+				stream.meta_send = true;
+				wake_controller();
+				LOG_INFO("Ogg metadata length: %u", stream.header_len - 3);
+			}
+			free(ogg.data);
+            ogg.data = NULL;
+			ogg.state = OGG_SYNC;
+			break;
+		}
+        default: 
+            break;
+		}
+
+		p += consumed;
+		n -= consumed;
+	}
+}
+
 static void *stream_thread() {
 
 	while (running) {
@@ -343,6 +494,7 @@ static void *stream_thread() {
 					}
 					
 					if (n > 0) {
+                        stream_ogg(n);
 						_buf_inc_writep(streambuf, n);
 						stream.bytes += n;
 						if (stream.meta_interval) {
@@ -485,7 +637,7 @@ void stream_file(const char *header, size_t header_len, unsigned threshold) {
 	UNLOCK;
 }
 
-void stream_sock(u32_t ip, u16_t port, const char *header, size_t header_len, unsigned threshold, bool cont_wait) {
+void stream_sock(u32_t ip, u16_t port, bool use_ssl, bool use_ogg, const char *header, size_t header_len, unsigned threshold, bool cont_wait) {
 	struct sockaddr_in addr;
 
 #if EMBEDDED
@@ -584,6 +736,11 @@ void stream_sock(u32_t ip, u16_t port, const char *header, size_t header_len, un
 	stream.sent_headers = false;
 	stream.bytes = 0;
 	stream.threshold = threshold;
+    
+    ogg.miss = ogg.match = 0;
+	ogg.state = use_ogg ? OGG_SYNC : OGG_OFF;
+    ogg.flac = false;
+    ogg.serial = ULLONG_MAX;
 
 	UNLOCK;
 }
@@ -604,6 +761,8 @@ bool stream_disconnect(void) {
 		disc = true;
 	}
 	stream.state = STOPPED;
+    if (ogg.state == OGG_PAGE && ogg.data) free(ogg.data);
+    ogg.data = NULL;
 	UNLOCK;
 	return disc;
 }

components/squeezelite/vorbis.c

@@ -50,7 +50,7 @@ static inline int32_t clip15(int32_t x) {
 
 struct vorbis {
 	bool opened;
-	enum { OGG_SYNC, OGG_ID_HEADER, OGG_COMMENT_HEADER, OGG_SETUP_HEADER } status;
+	enum { OGG_ID_HEADER, OGG_COMMENT_HEADER, OGG_SETUP_HEADER } status;
 	struct {
 		ogg_stream_state state;
 		ogg_packet packet;
@@ -72,6 +72,13 @@ static struct vorbis {
 	// vorbis symbols to be dynamically loaded - from either vorbisfile or vorbisidec (tremor) version of library
 	vorbis_info *(* ov_info)(OggVorbis_File *vf, int link);
 	int (* ov_clear)(OggVorbis_File *vf);
+	void (* ov_info_init)(vorbis_info* vi);
+	void (* ov_info_clear)(vorbis_info* vi);
+    void (* ov_comment_init)(vorbis_comment* vc);
+    void (* ov_comment_clear(vorbis_comment *vc);
+	int (* ov_block_init)(vorbis_dsp_state* v, vorbis_block* vb);
+	int (* ov_block_clear)(vorbis_block* vb);
+	void (* ov_vorbis_dsp_clear)(vorbis_dsp_state* v);    
 	long (* ov_read)(OggVorbis_File *vf, char *buffer, int length, int bigendianp, int word, int sgned, int *bitstream);
 	long (* ov_read_tremor)(OggVorbis_File *vf, char *buffer, int length, int *bitstream);
 	int (* ov_open_callbacks)(void *datasource, OggVorbis_File *vf, const char *initial, long ibytes, ov_callbacks callbacks);
@@ -131,48 +138,16 @@ extern struct processstate process;
 #define OG(h, fn, ...) (h)->ogg_ ## fn(__VA_ARGS__)
 #endif
 
-static int get_ogg_packet(void) {
+static int get_audio_packet(void) {
 	int status, packet = -1;
 
 	LOCK_S;
 	size_t bytes = min(_buf_used(streambuf), _buf_cont_read(streambuf));
 
 	while (!(status = OG(&go, stream_packetout, &v->state, &v->packet)) && bytes) {
-        
-        // if sync_pageout (or sync_pageseek) is not called first, sync buffers build ups
-        while (!(status = OG(&go, sync_pageout, &v->sync, &v->page)) && bytes) {
-			size_t consumed = min(bytes, 4096);
-			char* buffer = OG(&gv, sync_buffer, &v->sync, consumed);
-			memcpy(buffer, streambuf->readp, consumed);
-			OG(&gv, sync_wrote, &v->sync, consumed);
-
-			_buf_inc_readp(streambuf, consumed);
-			bytes -= consumed;
-        }
-
-		// if we have a new page, put it in
-		if (status)	OG(&go, stream_pagein, &v->state, &v->page);
-	}
-    
-    // only return a negative value when true end of streaming is reached
-    if (status > 0) packet = status;
-    else if (stream.state > DISCONNECT || _buf_used(streambuf)) packet = 0;
-
-	UNLOCK_S;
-	return packet;
-}
-
-static int read_vorbis_header(void) {
-	int status = 0;
-	bool fetch = true;
-
-	LOCK_S;
-
-	size_t bytes = min(_buf_used(streambuf), _buf_cont_read(streambuf));
-
-	while (bytes && !status) {
-		// first fetch a page if we need one
-		if (fetch) {
+		
+		// if sync_pageout (or sync_pageseek) is not called here, sync buffers build up
+		while (!(status = OG(&go, sync_pageout, &v->sync, &v->page)) && bytes) {
 			size_t consumed = min(bytes, 4096);
 			char* buffer = OG(&go, sync_buffer, &v->sync, consumed);
 			memcpy(buffer, streambuf->readp, consumed);
@@ -180,81 +155,122 @@ static int read_vorbis_header(void) {
 
 			_buf_inc_readp(streambuf, consumed);
 			bytes -= consumed;
-
-			if (!OG(&go, sync_pageseek, &v->sync, &v->page)) continue;
 		}
 
-		switch (v->status) {
-		case OGG_SYNC:
-			v->status = OGG_ID_HEADER;
-			OG(&go, stream_reset_serialno, &v->state, OG(&go, page_serialno, &v->page));
-			fetch = false;
-			break;
-		case OGG_ID_HEADER:
-			status = OG(&go, stream_pagein, &v->state, &v->page);
-			if (!OG(&go, stream_packetout, &v->state, &v->packet)) break;
-		
+		// if we have a new page, put it in and reset serialno at BoS
+		if (status) {
+			OG(&go, stream_pagein, &v->state, &v->page);
+			if (OG(&go, page_bos, &v->page)) OG(&go, stream_reset_serialno, &v->state, OG(&go, page_serialno, &v->page));	
+		}
+	}
+
+	/* odd packets are not audio and should be discarded. With no packet, we
+	 * return a negative value when there is really nothing more to proceed */
+	if (status > 0 && (v->packet.packet[0] & 0x01) == 0) packet = status;
+	else if (stream.state > DISCONNECT || _buf_used(streambuf)) packet = 0;
+
+	UNLOCK_S;
+	return packet;
+}
+
+static int read_vorbis_header(void) {
+	int done = 0;
+	bool fetch = true;
+
+	LOCK_S;
+	size_t bytes = min(_buf_used(streambuf), _buf_cont_read(streambuf));
+
+	while (bytes && !done) {
+		int status;
+
+		// get aligned to a page and ready to bring it in
+		do {
+			size_t consumed = min(bytes, 4096);
+
+			char* buffer = OG(&go, sync_buffer, &v->sync, consumed);
+			memcpy(buffer, streambuf->readp, consumed);
+			OG(&go, sync_wrote, &v->sync, consumed);
+
+			_buf_inc_readp(streambuf, consumed);
+			bytes -= consumed;
+
+			status = fetch ? OG(&go, sync_pageout, &v->sync, &v->page) :
+		 					 OG(&go, sync_pageseek, &v->sync, &v->page);
+		} while (bytes && status <= 0);
+
+		// nothing has been found and we have no more bytes, come back later
+		if (status <= 0) break;
+
+		// always set stream serialno if we have a new one (no multiplexed streams)
+		if (OG(&go, page_bos, &v->page)) OG(&go, stream_reset_serialno, &v->state, OG(&go, page_serialno, &v->page));
+
+		// bring new page in if we want it (otherwise we're just skipping)
+		if (fetch) OG(&go, stream_pagein, &v->state, &v->page);
+
+		// not a switch...case b/c we might have multiple packets in a page in vorbis
+		if (v->status == OGG_ID_HEADER) {
+			// we need the id packet, get more pages if we don't
+			if (!OG(&go, stream_packetout, &v->state, &v->packet)) continue;
+
 			OV(&gv, info_init, &v->info);
 			status = OV(&gv, synthesis_headerin, &v->info, &v->comment, &v->packet);
 
 			if (status) {
-				LOG_ERROR("vorbis id header packet error %d", status);
-				status = -1;
+				LOG_ERROR("id header packet error %d", status);
+				done = -1;
 			} else {
 				v->channels = v->info.channels;
 				v->rate = v->info.rate;
 				v->status = OGG_COMMENT_HEADER;
-
-				// only fetch if no other packet already in (they should not)
-				fetch = OG(&go, page_packets, &v->page) <= 1;
-				if (!fetch) LOG_INFO("id packet should terminate page");
+				fetch = false;
 				LOG_INFO("id acquired");
+				// we should only have one packet, so get next pages
+				if (OG(&go, page_packets, &v->page) == 1) continue;
 			}
-			break;
-		case OGG_SETUP_HEADER:
-			// header packets don't align with pages on Vorbis (contrary to Opus)
-			if (fetch) OG(&go, stream_pagein, &v->state, &v->page);
+		} 
+		
+		if (v->status == OGG_COMMENT_HEADER) {
+			// don't consume VorbisComment which could be a huge packet, just skip it
+			int packets = OG(&go, page_packets, &v->page);
+			if (!packets) continue;
+
+			// we have a "fake" comment packet that is just has the last page...
+			v->status = OGG_SETUP_HEADER;
+			OG(&go, stream_pagein, &v->state, &v->page);
+			OG(&go, stream_packetout, &v->state, &v->packet);
+
+			OV(&gv, comment_init, &v->comment);
+			v->comment.vendor = "N/A";
+			fetch = true;
+			LOG_INFO("comment skipped successfully");
+
+			// because of lack of page alignment, we might have the setup page already fully in
+			if (packets == 1) continue;
+		}
+
+		if (v->status == OGG_SETUP_HEADER) {
+			// we need the setup packet, get more pages if we don't
+			if (OG(&go, stream_packetout, &v->state, &v->packet) <= 0) continue;
 
 			// finally build a codec if we have the packet
-			status = OG(&go, stream_packetout, &v->state, &v->packet);
-			if (status && ((status = OV(&gv, synthesis_headerin, &v->info, &v->comment, &v->packet)) ||
-				(status = OV(&gv, synthesis_init, &v->decoder, &v->info)))) {
-				LOG_ERROR("vorbis setup header packet error %d", status);
+			if (OV(&gv, synthesis_headerin, &v->info, &v->comment, &v->packet) ||
+				OV(&gv, synthesis_init, &v->decoder, &v->info)) {
+				LOG_ERROR("setup header packet error %d", status);
 				// no need to free comment, it's fake
 				OV(&gv, info_clear, &v->info);
-				status = -1;
+				done = -1;
 			} else {
 				OV(&gv, block_init, &v->decoder, &v->block);
 				v->opened = true;
-				LOG_INFO("codec up and running (rate: %d, channels:%d)", v->rate, v->channels);
-				status = 1;
+				LOG_INFO("codec up and running");
+				done = 1;
 			}
-			//@FIXME: can we have audio on that page as well?
-			break;
-		case OGG_COMMENT_HEADER: {
-			// don't consume VorbisComment, just skip it
-			int packets = OG(&go, page_packets, &v->page);
-			if (packets) {
-				v->status = OGG_SETUP_HEADER;
-				OG(&go, stream_pagein, &v->state, &v->page);
-				OG(&go, stream_packetout, &v->state, &v->packet);
-
-				OV(&gv, comment_init, &v->comment);
-				v->comment.vendor = "N/A";
-
-				// because of lack of page alignment, we might have the setup page already fully in
-				if (packets > 1) fetch = false;
-				LOG_INFO("comment skipped succesfully");
-			}
-			break;
-		}
-		default:
 			break;
 		}
 	}
 
 	UNLOCK_S;
-	return status;
+	return done;
 }
 
 inline int pcm_out(vorbis_dsp_state* decoder, void*** pcm) {
@@ -310,12 +326,12 @@ static decode_state vorbis_decode(void) {
     if (v->overflow) {
         n = pcm_out(&v->decoder, &pcm);
         v->overflow = n - min(n, frames);                
-    } else if ((packet = get_ogg_packet()) > 0) {
+    } else if ((packet = get_audio_packet()) > 0) {
 		n = OV(&gv, synthesis, &v->block, &v->packet);
 		if (n == 0) n = OV(&gv, synthesis_blockin, &v->decoder, &v->block);
         if (n == 0) n = pcm_out(&v->decoder, &pcm);
         v->overflow = n - min(n, frames);
-	} else if (!packet && !OG(&go, page_eos, &v->page)) {
+	} else if (!packet) {
 		UNLOCK_O_direct;
 		return DECODE_RUNNING;
 	}
@@ -396,33 +412,32 @@ static decode_state vorbis_decode(void) {
 }
 
 static void vorbis_open(u8_t size, u8_t rate, u8_t chan, u8_t endianness) {
-    LOG_INFO("OPENING CODEC");
 	if (v->opened) {
-		OV(&go, block_clear, &v->block);
-		OV(&go, info_clear, &v->info);
-		OV(&go, dsp_clear, &v->decoder);
+		OV(&gv, block_clear, &v->block);
+		OV(&gv, dsp_clear, &v->decoder);
+		OV(&gv, info_clear, &v->info);        
 	}
     
     v->opened = false;
-	v->status = OGG_SYNC;
+	v->status = OGG_ID_HEADER;
     v->overflow = 0;
-    
-    OG(&gu, sync_clear, &v->sync);
-    OG(&gu, stream_clear, &v->state);
-    OG(&gu, stream_init, &v->state, -1);
+
+    OG(&go, stream_clear, &v->state);  
+    OG(&go, sync_clear, &v->sync);
+    OG(&go, stream_init, &v->state, -1);    
 }
 
 static void vorbis_close() {
-    return;
-    LOG_INFO("CLOSING CODEC");
 	if (v->opened) {
-		OV(&go, block_clear, &v->block);
-		OV(&go, info_clear, &v->info);
-		OV(&go, dsp_clear, &v->decoder);
+		OV(&gv, block_clear, &v->block);
+		OV(&gv, dsp_clear, &v->decoder);
+        // info must be last otherwise there is memory leak (where is it said... nowhere)
+		OV(&gv, info_clear, &v->info);
+        // we don' t have comments to free
 	}
     
     v->opened = false;
-    
+
 	OG(&go, stream_clear, &v->state);
 	OG(&go, sync_clear, &v->sync);
 }
@@ -469,6 +484,11 @@ static bool load_vorbis() {
 	v_handle.ov_read = dlsym(handle, "ov_read");
 	v_handle.ov_info = dlsym(handle, "ov_info");
 	v_handle.ov_clear = dlsym(handle, "ov_clear");
+	v.handle.ov_info_clear = dlsym(gv.handle, "vorbis_info_clear");
+	v.handle.ov_comment_init = dlsym(gv.handle, "vorbis_comment_init");
+    v.handle.ov_comment_clear = dlsym(gv.handle, "vorbis_comment_clear");
+    v.handle.ov_block_init = dlsym(gv.handle, "vorbis_block_init");    
+	v.handle.ov_block_clear = dlsym(gv.handle, "vorbis_block_clear");    
 	v_handle.ov_open_callbacks = dlsym(handle, "ov_open_callbacks");
 	
 	if ((err = dlerror()) != NULL) {