correct fixed volume spectrum scale - release

might be linked to "too many CLI connection" but I'm not sure

.github/workflows/CrossBuild.yml

@@ -4,9 +4,9 @@ name: Cross-Build
 
 on:
   push:
-    branches: [ master-cmake ]
+    branches-ignore: [ master ]
   pull_request:
-    branches: [ master-cmake ]
+    branches-ignore: [ master ]
 
 jobs:
   job1:

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,67 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ master-cmake ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ master-cmake ]
+  schedule:
+    - cron: '19 12 * * 4'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp', 'javascript', 'python']
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
+        # Learn more:
+        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: ${{ matrix.language }}
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+        # queries: ./path/to/local/query, your-org/your-repo/queries@main
+
+    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+    # If this step fails, then you should remove it and run the build manually (see below)
+    - name: Autobuild
+      uses: github/codeql-action/autobuild@v1
+
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 https://git.io/JvXDl
+
+    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
+    #    and modify them (or add more) to build your code if your project
+    #    uses a compiled language
+
+    #- run: |
+    #   make bootstrap
+    #   make release
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

Dockerfile

@@ -18,8 +18,6 @@ RUN wget https://dl.espressif.com/dl/xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a
 RUN tar -xzf xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz
 RUN rm xtensa-esp32-elf-linux64-1.22.0-80-g6c4433a-5.2.0.tar.gz
 
-# Patch I2S in esp-idf
-RUN cp /workspace/squeezelite-esp32/idf-patch/i2s.c /workspace/esp-idf/components/driver/i2s.c
 RUN rm -r /workspace/squeezelite-esp32
 RUN mkdir /workspace/squeezelite-esp32
 

build-scripts/I2S-4MFlash-sdkconfig.defaults

@@ -457,9 +457,9 @@ CONFIG_LWIP_SO_REUSE=y
 CONFIG_LWIP_SO_REUSE_RXTOALL=y
 # CONFIG_LWIP_SO_RCVBUF is not set
 # CONFIG_LWIP_IP_FRAG is not set
-#CONFIG_LWIP_IP_REASSEMBLY is not set
 # CONFIG_LWIP_STATS is not set
 # CONFIG_LWIP_ETHARP_TRUST_IP_MAC is not set
+CONFIG_LWIP_IP_REASSEMBLY=y
 CONFIG_LWIP_ESP_GRATUITOUS_ARP=y
 CONFIG_LWIP_GARP_TMR_INTERVAL=60
 CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=32

build-scripts/SqueezeAmp-sdkconfig.defaults

@@ -457,7 +457,7 @@ CONFIG_LWIP_MAX_SOCKETS=16
 # CONFIG_LWIP_USE_ONLY_LWIP_SELECT is not set
 CONFIG_LWIP_SO_REUSE=y
 CONFIG_LWIP_SO_REUSE_RXTOALL=y
-#CONFIG_LWIP_IP_REASSEMBLY is not set
+CONFIG_LWIP_IP_REASSEMBLY=y
 CONFIG_LWIP_ESP_GRATUITOUS_ARP=y
 CONFIG_LWIP_GARP_TMR_INTERVAL=60
 CONFIG_LWIP_TCPIP_RECVMBOX_SIZE=32

components/driver_bt/bt_app_source.c

@@ -28,10 +28,6 @@ extern void 	output_bt_tick(void);
 extern char*	output_state_str(void);
 extern bool		output_stopped(void);
 
-extern void wifi_manager_update_status();
-
-//int64_t connecting_timeout = 0;
-
 static void bt_app_av_state_connecting(uint16_t event, void *param);
 static void filter_inquiry_scan_result(esp_bt_gap_cb_param_t *param);
 
@@ -206,13 +202,11 @@ void set_app_source_state(int new_state){
     if(bt_app_source_a2d_state!=new_state){
         ESP_LOGD(TAG, "Updating state from %s to %s", APP_AV_STATE_DESC[bt_app_source_a2d_state], APP_AV_STATE_DESC[new_state]);
         bt_app_source_a2d_state=new_state;
-        wifi_manager_update_status();
     }
 }
 void set_a2dp_media_state(int new_state){
     if(bt_app_source_media_state!=new_state){
         bt_app_source_media_state=new_state;
-        wifi_manager_update_status();
     }
 }
 void hal_bluetooth_init(const char * options)

components/services/accessors.c

@@ -531,7 +531,9 @@ cJSON * add_gpio_for_name(cJSON * list,const char * nvs_entry,const char * name,
 	int gpioNum=0;
 	if ((p = strcasestr(nvs_entry, name)) != NULL) {
 		gpioNum = atoi(strchr(p, '=') + 1);
-		cJSON_AddItemToArray(llist,get_gpio_entry(name,prefix,gpioNum,fixed));
+		if(gpioNum>=0){
+			cJSON_AddItemToArray(llist,get_gpio_entry(name,prefix,gpioNum,fixed));
+		}
 	}
 	return llist;
 }

components/services/battery.c

@@ -40,8 +40,6 @@ static struct {
 	.cells = 2,
 };	
 
-extern void wifi_manager_update_status();
-
 /****************************************************************************************
  * 
  */
@@ -66,7 +64,6 @@ static void battery_callback(TimerHandle_t xTimer) {
 		battery.avg = battery.sum / battery.count;
 		battery.sum = battery.count = 0;
 		ESP_LOGI(TAG, "Voltage %.2fV", battery.avg);
-		wifi_manager_update_status();
 	}	
 }
 

components/services/monitor.c

@@ -41,7 +41,6 @@ bool jack_inserted_svc(void);
 void (*spkfault_handler_svc)(bool inserted);
 bool spkfault_svc(void);
 
-extern void wifi_manager_update_status();
 
 /****************************************************************************************
  * 
@@ -147,8 +146,6 @@ static void monitor_callback(TimerHandle_t xTimer) {
  */
 static void jack_handler_default(void *id, button_event_e event, button_press_e mode, bool long_press) {
 	ESP_LOGD(TAG, "Jack %s", event == BUTTON_PRESSED ? "inserted" : "removed");
-	messaging_post_message(MESSAGING_INFO, MESSAGING_CLASS_SYSTEM,"jack is %s",BUTTON_PRESSED ? "inserted" : "removed");
-	wifi_manager_update_status();
 	if (jack_handler_svc) (*jack_handler_svc)(event == BUTTON_PRESSED);
 }
 

components/squeezelite/controls.c

@@ -279,6 +279,7 @@ static void notify(in_addr_t ip, u16_t hport, u16_t cport) {
 
 	if (connect(cli_sock, (struct sockaddr *) &addr, addrlen) < 0) {
 		LOG_ERROR("unable to connect to server %s:%hu with cli", inet_ntoa(server_ip), server_cport);
+		closesocket(cli_sock);
 		cli_sock = -1;
 	}
 	

components/squeezelite/display.c

@@ -808,6 +808,8 @@ static void grfa_handler(u8_t *data, int len) {
 			artwork.y = htons(pkt->y);		
 		} else if (artwork.size) GDS_ClearWindow(display, artwork.x, artwork.y, -1, -1, GDS_COLOR_BLACK);
 		
+		LOG_INFO("gfra en:%u x:%hu, y:%hu", artwork.enable, artwork.x, artwork.y);
+		
 		// done in any case
 		return;
 	}
@@ -875,7 +877,7 @@ static void visu_update(void) {
 		
 			// convert to dB (1 bit remaining for getting X²/N, 60dB dynamic starting from 0dBFS = 3 bits back-off)
 			for (int i = visu.n; --i >= 0;) {	 
-				visu.bars[i].current = visu.max * (0.01667f*10*log10f(0.0000001f + (visu.bars[i].current >> (visu_export.gain == FIXED_ONE ? 7 : 1))) - 0.2543f);
+				visu.bars[i].current = visu.max * (0.01667f*10*log10f(0.0000001f + (visu.bars[i].current >> (visu_export.gain == FIXED_ONE ? 8 : 1))) - 0.2543f);
 				if (visu.bars[i].current > visu.max) visu.bars[i].current = visu.max;
 				else if (visu.bars[i].current < 0) visu.bars[i].current = 0;
 			}
@@ -917,7 +919,7 @@ static void visu_update(void) {
 				}	
 			
 				// convert to dB and bars, same back-off
-				if (power) visu.bars[i].current = visu.max * (0.01667f*10*(log10f(power) - log10f(FFT_LEN/(visu_export.gain == FIXED_ONE ? 128 : 2)*2)) - 0.2543f);
+				if (power) visu.bars[i].current = visu.max * (0.01667f*10*(log10f(power) - log10f(FFT_LEN*(visu_export.gain == FIXED_ONE ? 256 : 2))) - 0.2543f);
 				if (visu.bars[i].current > visu.max) visu.bars[i].current = visu.max;
 				else if (visu.bars[i].current < 0) visu.bars[i].current = 0;
 			}	
@@ -1065,13 +1067,27 @@ static void visu_handler( u8_t *data, int len) {
 				bars = htonl(pkt->bars);
 				visu.spectrum_scale = htonl(pkt->spectrum_scale) / 100.;
 			} else {
-				// full screen visu, try to use bottom screen if available
+				// full screen visu, try to optimize orientation/shape
 				visu.width = htonl(pkt->full.width);
-				visu.height = GDS_GetHeight(display) > displayer.height ? GDS_GetHeight(display) - displayer.height : GDS_GetHeight(display);
-				visu.row = GDS_GetHeight(display) - visu.height;			
+				visu.height = GDS_GetHeight(display);					
 				
-				// try to estimate if we should rotate visu
-				if (visu.height > displayer.height && visu.height > 2*visu.width) visu.rotate = true;
+				// do we have enough height to play with layout
+				if (GDS_GetHeight(display) > displayer.height) {
+					// by default, use up to the bottom of the display
+					visu.height -= displayer.height;					
+					visu.row = displayer.height;
+
+					if (artwork.enable && artwork.y) {
+						// server sets width to artwork X offset to tell us to rotate
+						if (visu.width != artwork.x) {
+							visu.height = artwork.y - displayer.height;
+							if (visu.height <= 0) {
+								visu.height = displayer.height;
+								LOG_WARN("No room left for visualizer, disable it or increase artwork offset %d", artwork.y);
+							}				
+						} else visu.rotate = true;
+					}		
+				} else visu.row = 0;
 				
 				// is this spectrum or analogue/digital
 				if ((visu.mode & ~VISU_ESP32) == VISU_SPECTRUM) {
@@ -1094,9 +1110,10 @@ static void visu_handler( u8_t *data, int len) {
 				visu.style = htonl(pkt->classical_vu.style);
 				if (visu.style) visu.row = visu.height - VU_HEIGHT;
 			}	
-			if (bars > MAX_BARS) bars = MAX_BARS;
 		}	
 		
+		if (bars > MAX_BARS) bars = MAX_BARS;
+		
 		// for rotate, swap width & height
 		if (visu.rotate) visu_fit(bars, visu.height, visu.width);
 		else visu_fit(bars, visu.width, visu.height);

components/squeezelite/output_bt.c

@@ -124,7 +124,7 @@ static int _write_frames(frames_t out_frames, bool silence, s32_t gainL, s32_t g
 int32_t output_bt_data(uint8_t *data, int32_t len) {
 	int32_t iframes = len / BYTES_PER_FRAME, start_timer = 0;
 
-	if (len < 0 || data == NULL || !running) {
+	if (iframes <= 0 || data == NULL || !running) {
 		return 0;
 	}
 	
@@ -135,9 +135,9 @@ int32_t output_bt_data(uint8_t *data, int32_t len) {
 	// for us to send. (BTC_SBC_DEC_PCM_DATA_LEN * sizeof(OI_INT16) - availPcmBytes
 	SET_MIN_MAX(len,req);
 	TIME_MEASUREMENT_START(start_timer);
-	SET_MIN_MAX_SIZED(_buf_used(outputbuf),bt,outputbuf->size);
 	
 	LOCK;	
+	SET_MIN_MAX_SIZED(_buf_used(outputbuf),bt,outputbuf->size);
 	output.device_frames = 0; 
 	output.updated = gettime_ms();
 	output.frames_played_dmp = output.frames_played;

components/squeezelite/slimproto.c

@@ -822,14 +822,14 @@ in_addr_t discover_server(char *default_server, int max) {
 		memset(&s, 0, sizeof(s));
 
 		if (sendto(disc_sock, buf, len, 0, (struct sockaddr *)&d, sizeof(d)) < 0) {
-			LOG_INFO("error sending disovery");
+			LOG_INFO("error sending discovery");
 		}
 
 		if (poll(&pollinfo, 1, 5000) == 1) {
-			char readbuf[32], *p;
+			char readbuf[64], *p;
 			socklen_t slen = sizeof(s);
-			memset(readbuf, 0, 32);
-			recvfrom(disc_sock, readbuf, 32 - 1, 0, (struct sockaddr *)&s, &slen);
+			memset(readbuf, 0, sizeof(readbuf));
+			recvfrom(disc_sock, readbuf, sizeof(readbuf) - 1, 0, (struct sockaddr *)&s, &slen);
 			LOG_INFO("got response from: %s:%d", inet_ntoa(s.sin_addr), ntohs(s.sin_port));
 
 			 if ((p = strstr(readbuf, port_d)) != NULL) {

components/wifi-manager/CMakeLists.txt

@@ -1,7 +1,7 @@
 idf_component_register( SRC_DIRS .
 						INCLUDE_DIRS . ${IDF_PATH}/components/esp_http_server/src ${IDF_PATH}/components/esp_http_server/src/port/esp32  ${IDF_PATH}/components/esp_http_server/src/util ${IDF_PATH}/components/esp_http_server/src/
 						REQUIRES squeezelite-ota json mdns 
-						PRIV_REQUIRES tools services platform_config esp_common json newlib freertos  spi_flash nvs_flash mdns pthread wpa_supplicant platform_console esp_http_server console   driver_bt
+						PRIV_REQUIRES tools services platform_config esp_common json newlib freertos  spi_flash nvs_flash mdns pthread wpa_supplicant platform_console esp_http_server console driver_bt
 						EMBED_FILES res/style.css.gz res/code.js.gz index.html res/bootstrap.css.gz res/yeti/bootstrap.css.gz res/jquery.js.gz res/bootstrap.js.gz res/favicon.ico
 						
 )

components/wifi-manager/http_server_handlers.c

@@ -1182,6 +1182,8 @@ esp_err_t status_get_handler(httpd_req_t *req){
 	else {
 		httpd_resp_send_err(req, HTTPD_500_INTERNAL_SERVER_ERROR , "Error retrieving status object");
 	}
+	// update status for next status call
+	wifi_manager_update_status();
 
 	return ESP_OK;
 }

plugin/SqueezeESP32/Graphics.pm

@@ -17,6 +17,17 @@ my $VISUALIZER_WAVEFORM = 3;
 my $VISUALIZER_VUMETER_ESP32 = 0x11;
 my $VISUALIZER_SPECTRUM_ANALYZER_ESP32 = 0x12;
 
+my %SPECTRUM_DEFAULTS = (
+	scale => 25,
+	small => {
+		size => 25,
+		band => 5.33
+	},
+	full => {
+		band => 8
+	},
+);
+
 {
 	#__PACKAGE__->mk_accessor('array', 'modes');
 	__PACKAGE__->mk_accessor('rw', 'modes');
@@ -33,12 +44,14 @@ sub new {
 	$cprefs->init( { 
 		width => 128,
 		small_VU => 15,
-		spectrum =>	{	scale => 25,
-						small => { size => 25, band => 5.33 },
-						full  => { band => 8 },
-				},
-		}		
-	);				
+		spectrum => \%SPECTRUM_DEFAULTS,
+	} );
+
+	$prefs->migrateClient(2, sub {
+		my ($cprefs, $client) = @_;
+		sanitizeSpectrum($cprefs->get('spectrum'));
+		1;
+	});
 
 	$display->init_accessor(
 		modes => $display->build_modes,
@@ -106,6 +119,16 @@ sub displayHeight {
 	return 32;
 }
 
+sub sanitizeSpectrum {
+	my ($spectrum) = shift;
+
+	$spectrum->{small}->{size} ||= $SPECTRUM_DEFAULTS{small}->{size};
+	$spectrum->{small}->{band} ||= $SPECTRUM_DEFAULTS{small}->{band};
+	$spectrum->{full}->{band} ||= $SPECTRUM_DEFAULTS{full}->{band};
+
+	return $spectrum;
+}
+
 sub build_modes {
 	my $client = shift->client;
 	my $cprefs = $prefs->client($client);
@@ -118,7 +141,7 @@ sub build_modes {
 	my $width_low = ($artwork->{'enable'} && $artwork->{'x'} && ($artwork->{'y'} >= 32 || $disp_width - $artwork->{'x'} > 32)) ? $artwork->{'x'} : $disp_width;
 			
 	my $small_VU = $cprefs->get('small_VU');
-	my $spectrum = $cprefs->get('spectrum');
+	my $spectrum = sanitizeSpectrum($cprefs->get('spectrum'));
 
 	my $small_spectrum_pos = { x => $width - int ($spectrum->{small}->{size} * $width / 100),
 						 width => int ($spectrum->{small}->{size} * $width / 100),

plugin/SqueezeESP32/Player.pm

@@ -91,16 +91,19 @@ sub init {
 	}
 	
 	$client->SUPER::init(@_);
-	$client->config_artwork;
-	$client->send_equalizer;
-	
 	main::INFOLOG && $log->is_info && $log->info("SqueezeESP player connected: " . $client->id);
 }	
 
 sub initPrefs {
 	my $client = shift;
+	
 	$sprefs->client($client)->init($defaultPrefs);
-	$prefs->client($client)->init( { equalizer => [(0) x 10] } );
+	
+	$prefs->client($client)->init( { 
+		equalizer => [(0) x 10],
+		artwork => undef,
+	} );
+
 	$client->SUPER::initPrefs;
 }
 
@@ -184,11 +187,13 @@ sub update_artwork {
 	my $cprefs = $prefs->client($client);
 
 	my $artwork = $cprefs->get('artwork') || return;
-
 	return unless $artwork->{'enable'};
 	
-	my $s = min($cprefs->get('height') - $artwork->{'y'}, $cprefs->get('width') - $artwork->{'x'});
+	my $header = pack('Nnn', $artwork->{'enable'}, $artwork->{'x'}, $artwork->{'y'});
+	$client->sendFrame( grfa => \$header );
+	$client->display->update;
 
+	my $s = min($cprefs->get('height') - $artwork->{'y'}, $cprefs->get('width') - $artwork->{'x'});
 	my $params = { force => shift || 0 };
 	my $path = 'music/current/cover_' . $s . 'x' . $s . '_o.jpg';
 	my $body = Slim::Web::Graphics::artworkRequest($client, $path, $params, \&send_artwork, undef, HTTP::Response->new);
@@ -248,13 +253,17 @@ sub config_artwork {
 	if ( my $artwork = $prefs->client($client)->get('artwork') ) {
 		my $header = pack('Nnn', $artwork->{'enable'}, $artwork->{'x'}, $artwork->{'y'});
 		$client->sendFrame( grfa => \$header );
+		$client->display->update;
 	}
 }
 
 sub reconnect {
 	my $client = shift;
-	$client->pluginData('artwork_md5', '');
 	$client->SUPER::reconnect(@_);
+	
+	$client->pluginData('artwork_md5', '');
+	$client->config_artwork;
+	$client->send_equalizer;
 }
 
 # Change the analog output mode between headphone and sub-woofer

plugin/SqueezeESP32/PlayerSettings.pm

@@ -43,22 +43,29 @@ sub handler {
 	if ($paramRef->{'saveSettings'}) {
 		if ($client->displayWidth) {
 			$cprefs->set('small_VU', $paramRef->{'pref_small_VU'} || 15);
-			my $spectrum = {
-				scale => $paramRef->{'pref_spectrum_scale'} || 25,
-				small => { 	size => $paramRef->{'pref_spectrum_small_size'} || 25,
-				band  => $paramRef->{'pref_spectrum_small_band'} || 5.33 },
-				full  => { 	band => $paramRef->{'pref_spectrum_full_band'} } || 8,
-			};
+
+			require Plugins::SqueezeESP32::Graphics;
+			my $spectrum = Plugins::SqueezeESP32::Graphics::sanitizeSpectrum({
+				scale => $paramRef->{'pref_spectrum_scale'},
+				small => {
+					size => $paramRef->{'pref_spectrum_small_size'},
+					band => $paramRef->{'pref_spectrum_small_band'}
+				},
+				full => {
+					band => $paramRef->{'pref_spectrum_full_band'}
+				},
+			});
 			$cprefs->set('spectrum', $spectrum);
 
 			my $artwork = {
-				enable => $paramRef->{'pref_artwork_enable'},
+				enable => $paramRef->{'pref_artwork_enable'} eq 'on',
 				x => $paramRef->{'pref_artwork_x'} || 0,
 				y => $paramRef->{'pref_artwork_y'} || 0,
 			};
+			
 			$cprefs->set('artwork', $artwork);
 			$client->display->modes($client->display->build_modes);
-			$client->display->update;
+			# the display update will be done below, after all is completed
 
 			# force update or disable artwork
 			if ($artwork->{'enable'}) {
@@ -66,6 +73,7 @@ sub handler {
 			} else {
 				$client->config_artwork();
 			}
+
 		}
 
 		my $equalizer = $cprefs->get('equalizer');

plugin/SqueezeESP32/Plugin.pm

@@ -24,6 +24,12 @@ $prefs->migrateClient(1, sub {
 	1;
 });
 
+$prefs->migrateClient(2, sub {
+	my ($cprefs, $client) = @_;
+	$cprefs->set('artwork', undef) if $cprefs->get('artwork') && ref $cprefs->get('artwork') ne 'HASH';
+	1;
+});
+
 $prefs->setChange(sub {
 	$_[2]->send_equalizer;
 }, 'equalizer');
@@ -67,8 +73,9 @@ sub onNotification {
 	my $request = shift;
 	my $client  = $request->client || return;
 
-	if ($client->isa('Plugins::SqueezeESP32::Player')) {
-		$client->update_artwork();
+	foreach my $player ($client->syncGroupActiveMembers) {
+		next unless $player->isa('Plugins::SqueezeESP32::Player');
+		$player->update_artwork;
 	}
 }
 

plugin/SqueezeESP32/install.xml

@@ -10,6 +10,6 @@
   <name>PLUGIN_SQUEEZEESP32</name>
   <description>PLUGIN_SQUEEZEESP32_DESC</description>
   <module>Plugins::SqueezeESP32::Plugin</module>
-    <version>0.200</version>
+    <version>0.211</version>
   <creator>Philippe</creator>
 </extensions>

plugin/SqueezeESP32/strings.txt

@@ -80,8 +80,10 @@ PLUGIN_SQUEEZEESP32_ARTWORK
 PLUGIN_SQUEEZEESP32_ARTWORK_DESC
 	DE	Wenn die Y Position kleiner als 32 ist, dann werden Plattenhüllen auf der rechten Seite angezeigt, und x definiert die Startposition.
 	DE	Plattenhüllen werden auf Displays mit weniger als 16 Graustufen in sehr geringer Qualität angezeigt.
-	EN	When Y position is less than 32, then artwork is displayed at the right of the main screen and x defines the starting position
-	EN	Using artwork on less than 16-levels grayscale display if really poor quality
+	EN	When Y position is less than 32, then artwork is displayed at the right of the main screen and X defines the starting position
+	EN	<br>On large screen, it's possible to rotate the VU/Spectrum by setting a small X offset (typically 32). That will push the 
+	EN	artwork to the right and make space for a vertical VU to its left.
+	EN	<br>Note that using artwork on less than 16-levels grayscale display if really poor quality
 
 PLUGIN_SQUEEZEESP32_ARTWORK_ENABLE
 	DE	Aktivieren