mirror of
https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-07 20:17:04 +03:00
refactor display
- part of components - separation between LMS & driver - move slimp message to squeezelite
This commit is contained in:
philippe44
289
components/squeezelite/display.c
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289
components/squeezelite/display.c
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/*
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* (c) 2004,2006 Richard Titmuss for SlimProtoLib
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* (c) Philippe G. 2019, philippe_44@outlook.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <ctype.h>
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#include "squeezelite.h"
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#include "display.h"
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struct grfb_packet {
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char opcode[4];
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u16_t brightness;
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};
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struct grfe_packet {
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char opcode[4];
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u16_t offset;
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u8_t transition;
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u8_t param;
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};
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struct grfs_packet {
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char opcode[4];
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u8_t screen;
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u8_t direction; // 1=left, 2=right
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u32_t pause; // in ms
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u32_t speed; // in ms
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u16_t by; // # of pixel of scroll step
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u16_t mode; // 0=continuous, 1=once and stop, 2=once and end
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u16_t width; // total width of animation
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u16_t offset; // offset if multiple packets are sent
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};
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struct grfg_packet {
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char opcode[4];
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u16_t screen;
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u16_t width; // # of pixels of scrollable
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};
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#define LINELEN 40
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static log_level loglevel = lINFO;
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static bool (*slimp_handler_chain)(u8_t *data, int len);
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static void (*notify_chain)(in_addr_t ip, u16_t hport, u16_t cport);
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static void server(in_addr_t ip, u16_t hport, u16_t cport);
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static bool handler(u8_t *data, int len);
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static void vfdc_handler( u8_t *_data, int bytes_read);
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static void grfe_handler( u8_t *data, int len);
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static void grfb_handler(u8_t *data, int len);
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static void grfs_handler(u8_t *data, int len);
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static void grfg_handler(u8_t *data, int len);
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/* scrolling undocumented information
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grfs
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B: screen number
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B:1 = left, 2 = right,
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Q: scroll pause once done (ms)
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Q: scroll speed (ms)
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W: # of pixels to scroll each time
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W: 0 = continue scrolling after pause, 1 = scroll to scrollend and then stop, 2 = scroll to scrollend and then end animation (causing new update)
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W: width of total scroll area in pixels
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grfd
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W: screen number
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W: width of scrollable area in pixels
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ANIC flags
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ANIM_TRANSITION 0x01 # A transition animation has finished
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ANIM_SCROLL_ONCE 0x02 # A scrollonce has finished
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ANIM_SCREEN_1 0x04 # For scrollonce only, screen 1 was scrolling
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ANIM_SCREEN_2 0x08 # For scrollonce only, screen 2 was scrolling
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*/
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/****************************************************************************************
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*
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*/
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void sb_display_init(void) {
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slimp_handler_chain = slimp_handler;
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slimp_handler = handler;
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notify_chain = server_notify;
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server_notify = server;
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}
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/****************************************************************************************
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*
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*/
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static void server(in_addr_t ip, u16_t hport, u16_t cport) {
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char msg[32];
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sprintf(msg, "%s:%hu", inet_ntoa(ip), hport);
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display->text(DISPLAY_CENTER, DISPLAY_CLEAR | DISPLAY_UPDATE, msg);
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if (notify_chain) (*notify_chain)(ip, hport, cport);
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}
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/****************************************************************************************
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* Process graphic display data
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*/
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static bool handler(u8_t *data, int len){
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bool res = true;
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if (!strncmp((char*) data, "vfdc", 4)) {
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vfdc_handler(data, len);
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} else if (!strncmp((char*) data, "grfe", 4)) {
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grfe_handler(data, len);
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} else if (!strncmp((char*) data, "grfb", 4)) {
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grfb_handler(data, len);
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} else if (!strncmp((char*) data, "grfs", 4)) {
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grfs_handler(data, len);
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} else if (!strncmp((char*) data, "grfg", 4)) {
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grfg_handler(data, len);
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} else {
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res = false;
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}
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// chain protocol handlers (bitwise or is fine)
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if (*slimp_handler_chain) res |= (*slimp_handler_chain)(data, len);
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return res;
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}
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/****************************************************************************************
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* Change special LCD chars to something more printable on screen
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*/
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static void makeprintable(unsigned char * line) {
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for (int n = 0; n < LINELEN; n++) {
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switch (line[n]) {
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case 11: /* block */
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line[n] = '#';
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break;;
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case 16: /* rightarrow */
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line[n] = '>';
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break;;
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case 22: /* circle */
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line[n] = '@';
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break;;
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case 145: /* note */
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line[n] = ' ';
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break;;
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case 152: /* bell */
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line[n] = 'o';
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break;
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default:
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break;
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}
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}
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}
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/****************************************************************************************
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* Check if char is printable, or a valid symbol
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*/
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static bool charisok(unsigned char c) {
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switch (c) {
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case 11: /* block */
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case 16: /* rightarrow */
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case 22: /* circle */
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case 145: /* note */
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case 152: /* bell */
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return true;
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break;;
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default:
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return isprint(c);
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}
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}
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/****************************************************************************************
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* Show the display (text mode)
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*/
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static void show_display_buffer(char *ddram) {
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char line1[LINELEN+1];
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char *line2;
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memset(line1, 0, LINELEN+1);
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strncpy(line1, ddram, LINELEN);
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line2 = &(ddram[LINELEN]);
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line2[LINELEN] = '\0';
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/* Convert special LCD chars */
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makeprintable((unsigned char *)line1);
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makeprintable((unsigned char *)line2);
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LOG_INFO("\n\t%.40s\n\t%.40s", line1, line2);
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display->text(DISPLAY_TOP_LEFT, DISPLAY_CLEAR, line1);
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display->text(DISPLAY_BOTTOM_LEFT, DISPLAY_UPDATE, line2);
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}
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/****************************************************************************************
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* Process display data
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*/
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static void vfdc_handler( u8_t *_data, int bytes_read) {
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unsigned short *data = (unsigned short*) _data, *display_data;
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char ddram[(LINELEN + 1) * 2];
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int n, addr = 0; /* counter */
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bytes_read -= 4;
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if (bytes_read % 2) bytes_read--; /* even number of bytes */
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// if we use Noritake VFD codes, display data starts at 12
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display_data = &(data[5]); /* display data starts at byte 10 */
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memset(ddram, ' ', LINELEN * 2);
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for (n = 0; n < (bytes_read/2); n++) {
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unsigned short d; /* data element */
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unsigned char t, c;
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d = ntohs(display_data[n]);
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t = (d & 0x00ff00) >> 8; /* type of display data */
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c = (d & 0x0000ff); /* character/command */
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switch (t) {
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case 0x03: /* character */
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if (!charisok(c)) c = ' ';
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if (addr <= LINELEN * 2) {
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ddram[addr++] = c;
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}
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break;
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case 0x02: /* command */
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switch (c) {
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case 0x06: /* display clear */
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memset(ddram, ' ', LINELEN * 2);
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break;
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case 0x02: /* cursor home */
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addr = 0;
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break;
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case 0xc0: /* cursor home2 */
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addr = LINELEN;
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break;
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}
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}
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}
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show_display_buffer(ddram);
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}
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/****************************************************************************************
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* Process graphic display data
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*/
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static void grfe_handler( u8_t *data, int len) {
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display->v_draw(data + 8);
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}
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/****************************************************************************************
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* Brightness
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*/
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static void grfb_handler(u8_t *data, int len) {
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s16_t brightness = htons(*(uint16_t*) (data + 4));
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LOG_INFO("brightness %hx", brightness);
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if (brightness < 0) {
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display->on(false);
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} else {
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display->on(true);
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display->brightness(brightness);
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}
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}
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/****************************************************************************************
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* Scroll set
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*/
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static void grfs_handler(u8_t *data, int len) {
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}
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/****************************************************************************************
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* Scroll go
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*/
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static void grfg_handler(u8_t *data, int len) {
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}
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