Mini Lego TV

2026-01-12 01:07:44 +03:00 · 2022-09-13 14:17:10 -07:00
parent ba4e460a28
commit 50ab079cdb
4 changed files with 735 additions and 0 deletions
--- a/ESP32_VideoPlayer/MiniLegoTV/MiniLegoTV.ino
+++ b/ESP32_VideoPlayer/MiniLegoTV/MiniLegoTV.ino
@@ -0,0 +1,249 @@
+/////////////////////////////////////////////////////////////////
+/*
+  Mini Lego TV based on ESP32
+  For More Information: https://youtu.be/2TOVohmUqOE
+  Created by Eric N. (ThatProject)
+*/
+/////////////////////////////////////////////////////////////////
+// This project is based on a Mini Retro TV.
+// https://www.instructables.com/Mini-Retro-TV/ 
+/////////////////////////////////////////////////////////////////
+
+/***
+ * Required libraries:
+ * https://github.com/moononournation/Arduino_GFX.git
+ * https://github.com/pschatzmann/arduino-libhelix.git
+ * https://github.com/bitbank2/JPEGDEC.git
+ */
+
+/***
+* Added libraries:
+* https://github.com/vshymanskyy/Preferences
+* https://github.com/fbiego/CST816S
+*/
+
+#define FPS 30
+#define MJPEG_BUFFER_SIZE (288 * 240 * 2 / 8)
+#define AUDIOASSIGNCORE 1
+#define DECODEASSIGNCORE 0
+#define DRAWASSIGNCORE 1
+
+#include "config.h"
+#include <WiFi.h>
+#include <FS.h>
+#include <SD.h>
+#include <Preferences.h>
+
+Preferences preferences;
+#define APP_NAME "video_player"
+#define K_VIDEO_INDEX "video_index"
+#define BASE_PATH "/Videos/"
+#define AAC_FILENAME "/44100.aac"
+#define MJPEG_FILENAME "/288_30fps.mjpeg"
+#define VIDEO_COUNT 20
+
+/* Arduino_GFX */
+#include <Arduino_GFX_Library.h>
+Arduino_DataBus *bus = new Arduino_ESP32SPI(DC, CS, SCK, MOSI, MISO, VSPI);
+Arduino_GFX *gfx = new Arduino_ST7789(bus, RST, 1, true, ST7789_TFTWIDTH, ST7789_TFTHEIGHT, 0, 20, 0, 20);
+
+/* Audio */
+#include "esp32_audio_task.h"
+
+/* MJPEG Video */
+#include "mjpeg_decode_draw_task.h"
+
+/* Touch */
+#include <CST816S.h>
+CST816S touch(TOUCH_SDA, TOUCH_SCL, TOUCH_RST, TOUCH_IRQ);
+
+/* Variables */
+static int next_frame = 0;
+static int skipped_frames = 0;
+static unsigned long start_ms, curr_ms, next_frame_ms;
+static unsigned int video_idx = 1;
+
+// pixel drawing callback
+static int drawMCU(JPEGDRAW *pDraw) {
+  unsigned long s = millis();
+  gfx->draw16bitRGBBitmap(pDraw->x, pDraw->y, pDraw->pPixels, pDraw->iWidth, pDraw->iHeight);
+  total_show_video_ms += millis() - s;
+  return 1;
+} /* drawMCU() */
+
+void setup() {
+  disableCore0WDT();
+
+  WiFi.mode(WIFI_OFF);
+  Serial.begin(115200);
+
+  // Init Display
+  gfx->begin(80000000);
+  gfx->fillScreen(BLACK);
+  pinMode(BLK, OUTPUT);
+  digitalWrite(BLK, HIGH);
+
+  xTaskCreate(
+    touchTask,
+    "touchTask",
+    2000,
+    NULL,
+    1,
+    NULL);
+
+  Serial.println("Init I2S");
+
+  esp_err_t ret_val = i2s_init(I2S_NUM_0, 44100, I2S_MCLK, I2S_SCLK, I2S_LRCLK, I2S_DOUT, I2S_DIN);
+  if (ret_val != ESP_OK) {
+    Serial.printf("i2s_init failed: %d\n", ret_val);
+    gfx->println("i2s_init failed");
+    return;
+  }
+  i2s_zero_dma_buffer(I2S_NUM_0);
+
+  Serial.println("Init FS");
+
+  SPIClass spi = SPIClass(HSPI);
+  spi.begin(SD_SCK, SD_MISO, SD_MOSI, SD_CS);
+  if (!SD.begin(SD_CS, spi, 80000000)) {
+    Serial.println("ERROR: File system mount failed!");
+    gfx->println("ERROR: File system mount failed!");
+    return;
+  }
+
+  preferences.begin(APP_NAME, false);
+  video_idx = preferences.getUInt(K_VIDEO_INDEX, 1);
+  Serial.printf("videoIndex: %d\n", video_idx);
+
+  gfx->setCursor(20, 20);
+  gfx->setTextColor(GREEN);
+  gfx->setTextSize(6, 6, 0);
+  gfx->printf("CH %d", video_idx);
+  delay(1000);
+
+  playVideoWithAudio(video_idx);
+}
+
+void loop() {
+}
+
+void touchTask(void *parameter) {
+  touch.begin();
+  while (1) {
+    if (touch.available()) {
+      Serial.printf("x: %d, y: %d\n", touch.data.x, touch.data.y);
+      switch (touch.data.gestureID) {
+        case SWIPE_LEFT:
+          Serial.println("SWIPE_LEFT");
+          break;
+        case SWIPE_RIGHT:
+          Serial.println("SWIPE_RIGHT");
+          break;
+        case SWIPE_UP:
+          Serial.println("SWIPE_UP (RIGHT)");
+          videoController(-1);
+          break;
+        case SWIPE_DOWN:
+          Serial.println("SWIPE_DOWN (LEFT)");
+          videoController(1);
+          break;
+        case SINGLE_CLICK:
+          Serial.println("SINGLE_CLICK");
+          break;
+        case DOUBLE_CLICK:
+          Serial.println("DOUBLE_CLICK");
+          break;
+        case LONG_PRESS:
+          Serial.println("LONG_PRESS");
+          break;
+      }
+    }
+    vTaskDelay(1000);
+  }
+}
+
+void playVideoWithAudio(int channel) {
+
+  char aFilePath[40];
+  sprintf(aFilePath, "%s%d%s", BASE_PATH, channel, AAC_FILENAME);
+
+  File aFile = SD.open(aFilePath);
+  if (!aFile || aFile.isDirectory()) {
+    Serial.printf("ERROR: Failed to open %s file for reading\n", aFilePath);
+    gfx->printf("ERROR: Failed to open %s file for reading\n", aFilePath);
+    return;
+  }
+
+  char vFilePath[40];
+  sprintf(vFilePath, "%s%d%s", BASE_PATH, channel, MJPEG_FILENAME);
+
+  File vFile = SD.open(vFilePath);
+  if (!vFile || vFile.isDirectory()) {
+    Serial.printf("ERROR: Failed to open %s file for reading\n", vFilePath);
+    gfx->printf("ERROR: Failed to open %s file for reading\n", vFilePath);
+    return;
+  }
+
+  Serial.println("Init video");
+
+  mjpeg_setup(&vFile, MJPEG_BUFFER_SIZE, drawMCU, false, DECODEASSIGNCORE, DRAWASSIGNCORE);
+
+  Serial.println("Start play audio task");
+
+  BaseType_t ret = aac_player_task_start(&aFile, AUDIOASSIGNCORE);
+
+  if (ret != pdPASS) {
+    Serial.printf("Audio player task start failed: %d\n", ret);
+    gfx->printf("Audio player task start failed: %d\n", ret);
+  }
+
+  Serial.println("Start play video");
+
+  start_ms = millis();
+  curr_ms = millis();
+  next_frame_ms = start_ms + (++next_frame * 1000 / FPS / 2);
+  while (vFile.available() && mjpeg_read_frame())  // Read video
+  {
+    total_read_video_ms += millis() - curr_ms;
+    curr_ms = millis();
+
+    if (millis() < next_frame_ms)  // check show frame or skip frame
+    {
+      // Play video
+      mjpeg_draw_frame();
+      total_decode_video_ms += millis() - curr_ms;
+      curr_ms = millis();
+    } else {
+      ++skipped_frames;
+      Serial.println("Skip frame");
+    }
+
+    while (millis() < next_frame_ms) {
+      vTaskDelay(pdMS_TO_TICKS(1));
+    }
+
+    curr_ms = millis();
+    next_frame_ms = start_ms + (++next_frame * 1000 / FPS);
+  }
+  int time_used = millis() - start_ms;
+  int total_frames = next_frame - 1;
+  Serial.println("AV end");
+  vFile.close();
+  aFile.close();
+
+  videoController(1);
+}
+
+void videoController(int next) {
+
+  video_idx += next;
+  if (video_idx <= 0) {
+    video_idx = VIDEO_COUNT;
+  } else if (video_idx > VIDEO_COUNT) {
+    video_idx = 1;
+  }
+  Serial.printf("video_idx : %d\n", video_idx);
+  preferences.putUInt(K_VIDEO_INDEX, video_idx);
+  preferences.end();
+  esp_restart();
+}
--- a/ESP32_VideoPlayer/MiniLegoTV/config.h
+++ b/ESP32_VideoPlayer/MiniLegoTV/config.h
@@ -0,0 +1,23 @@
+#define CS 5
+#define SCK 18
+#define MOSI 23
+#define MISO -1
+#define DC 27
+#define RST 33
+#define BLK 22
+
+#define I2S_MCLK -1
+#define I2S_SCLK 25
+#define I2S_LRCLK 26
+#define I2S_DOUT 32
+#define I2S_DIN -1
+
+#define SD_SCK 14
+#define SD_MOSI 15
+#define SD_MISO 4
+#define SD_CS 13
+
+#define TOUCH_SDA 17
+#define TOUCH_SCL 16
+#define TOUCH_RST 19
+#define TOUCH_IRQ 39
--- a/ESP32_VideoPlayer/MiniLegoTV/esp32_audio_task.h
+++ b/ESP32_VideoPlayer/MiniLegoTV/esp32_audio_task.h
@@ -0,0 +1,163 @@
+#include "driver/i2s.h"
+
+#include "AACDecoderHelix.h"
+#include "MP3DecoderHelix.h"
+
+static unsigned long total_read_audio_ms = 0;
+static unsigned long total_decode_audio_ms = 0;
+static unsigned long total_play_audio_ms = 0;
+
+static i2s_port_t _i2s_num;
+static esp_err_t i2s_init(i2s_port_t i2s_num, uint32_t sample_rate,
+                          int mck_io_num,   /*!< MCK in out pin. Note that ESP32 supports setting MCK on GPIO0/GPIO1/GPIO3 only*/
+                          int bck_io_num,   /*!< BCK in out pin*/
+                          int ws_io_num,    /*!< WS in out pin*/
+                          int data_out_num, /*!< DATA out pin*/
+                          int data_in_num   /*!< DATA in pin*/
+)
+{
+    _i2s_num = i2s_num;
+
+    esp_err_t ret_val = ESP_OK;
+
+    i2s_config_t i2s_config;
+    i2s_config.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX);
+    i2s_config.sample_rate = sample_rate;
+    i2s_config.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT;
+    i2s_config.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT;
+    i2s_config.communication_format = I2S_COMM_FORMAT_STAND_I2S;
+    i2s_config.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1;
+    i2s_config.dma_buf_count = 8;
+    i2s_config.dma_buf_len = 160;
+    i2s_config.use_apll = false;
+    i2s_config.tx_desc_auto_clear = true;
+    i2s_config.fixed_mclk = 0;
+    i2s_config.mclk_multiple = I2S_MCLK_MULTIPLE_DEFAULT;
+    i2s_config.bits_per_chan = I2S_BITS_PER_CHAN_16BIT;
+
+    i2s_pin_config_t pin_config;
+    pin_config.mck_io_num = mck_io_num;
+    pin_config.bck_io_num = bck_io_num;
+    pin_config.ws_io_num = ws_io_num;
+    pin_config.data_out_num = data_out_num;
+    pin_config.data_in_num = data_in_num;
+
+    ret_val |= i2s_driver_install(i2s_num, &i2s_config, 0, NULL);
+    ret_val |= i2s_set_pin(i2s_num, &pin_config);
+
+    return ret_val;
+}
+
+static int _samprate = 0;
+static void aacAudioDataCallback(AACFrameInfo &info, int16_t *pwm_buffer, size_t len)
+{
+    unsigned long s = millis();
+    if (_samprate != info.sampRateOut)
+    {
+        // log_i("bitRate: %d, nChans: %d, sampRateCore: %d, sampRateOut: %d, bitsPerSample: %d, outputSamps: %d, profile: %d, tnsUsed: %d, pnsUsed: %d",
+        //       info.bitRate, info.nChans, info.sampRateCore, info.sampRateOut, info.bitsPerSample, info.outputSamps, info.profile, info.tnsUsed, info.pnsUsed);
+        i2s_set_clk(_i2s_num, info.sampRateOut /* sample_rate */, info.bitsPerSample /* bits_cfg */, (info.nChans == 2) ? I2S_CHANNEL_STEREO : I2S_CHANNEL_MONO /* channel */);
+        _samprate = info.sampRateOut;
+    }
+    size_t i2s_bytes_written = 0;
+    i2s_write(_i2s_num, pwm_buffer, len * 2, &i2s_bytes_written, portMAX_DELAY);
+    // log_i("len: %d, i2s_bytes_written: %d", len, i2s_bytes_written);
+    total_play_audio_ms += millis() - s;
+}
+static void mp3AudioDataCallback(MP3FrameInfo &info, int16_t *pwm_buffer, size_t len)
+{
+    unsigned long s = millis();
+    if (_samprate != info.samprate)
+    {
+        log_i("bitrate: %d, nChans: %d, samprate: %d, bitsPerSample: %d, outputSamps: %d, layer: %d, version: %d",
+              info.bitrate, info.nChans, info.samprate, info.bitsPerSample, info.outputSamps, info.layer, info.version);
+        i2s_set_clk(_i2s_num, info.samprate /* sample_rate */, info.bitsPerSample /* bits_cfg */, (info.nChans == 2) ? I2S_CHANNEL_STEREO : I2S_CHANNEL_MONO /* channel */);
+        _samprate = info.samprate;
+    }
+    size_t i2s_bytes_written = 0;
+    i2s_write(_i2s_num, pwm_buffer, len * 2, &i2s_bytes_written, portMAX_DELAY);
+    // log_i("len: %d, i2s_bytes_written: %d", len, i2s_bytes_written);
+    total_play_audio_ms += millis() - s;
+}
+
+static uint8_t _frame[MP3_MAX_FRAME_SIZE]; // MP3_MAX_FRAME_SIZE is smaller, so always use MP3_MAX_FRAME_SIZE
+
+static libhelix::AACDecoderHelix _aac(aacAudioDataCallback);
+static void aac_player_task(void *pvParam)
+{
+    Stream *input = (Stream *)pvParam;
+
+    int r, w;
+    unsigned long ms = millis();
+    while (r = input->readBytes(_frame, MP3_MAX_FRAME_SIZE))
+    {
+        total_read_audio_ms += millis() - ms;
+        ms = millis();
+
+        while (r > 0)
+        {
+            w = _aac.write(_frame, r);
+            // log_i("r: %d, w: %d\n", r, w);
+            r -= w;
+        }
+        total_decode_audio_ms += millis() - ms;
+        ms = millis();
+    }
+    log_i("AAC stop.");
+
+    vTaskDelete(NULL);
+}
+
+static libhelix::MP3DecoderHelix _mp3(mp3AudioDataCallback);
+static void mp3_player_task(void *pvParam)
+{
+    Stream *input = (Stream *)pvParam;
+
+    int r, w;
+    unsigned long ms = millis();
+    while (r = input->readBytes(_frame, MP3_MAX_FRAME_SIZE))
+    {
+        total_read_audio_ms += millis() - ms;
+        ms = millis();
+
+        while (r > 0)
+        {
+            w = _mp3.write(_frame, r);
+            // log_i("r: %d, w: %d\n", r, w);
+            r -= w;
+        }
+        total_decode_audio_ms += millis() - ms;
+        ms = millis();
+    }
+    log_i("MP3 stop.");
+
+    vTaskDelete(NULL);
+}
+
+static BaseType_t aac_player_task_start(Stream *input, BaseType_t audioAssignCore)
+{
+    _aac.begin();
+
+    return xTaskCreatePinnedToCore(
+        (TaskFunction_t)aac_player_task,
+        (const char *const)"AAC Player Task",
+        (const uint32_t)2000,
+        (void *const)input,
+        (UBaseType_t)configMAX_PRIORITIES - 1,
+        (TaskHandle_t *const)NULL,
+        (const BaseType_t)audioAssignCore);
+}
+
+static BaseType_t mp3_player_task_start(Stream *input, BaseType_t audioAssignCore)
+{
+    _mp3.begin();
+
+    return xTaskCreatePinnedToCore(
+        (TaskFunction_t)mp3_player_task,
+        (const char *const)"MP3 Player Task",
+        (const uint32_t)2000,
+        (void *const)input,
+        (UBaseType_t)configMAX_PRIORITIES - 1,
+        (TaskHandle_t *const)NULL,
+        (const BaseType_t)audioAssignCore);
+}
--- a/ESP32_VideoPlayer/MiniLegoTV/mjpeg_decode_draw_task.h
+++ b/ESP32_VideoPlayer/MiniLegoTV/mjpeg_decode_draw_task.h
@@ -0,0 +1,300 @@
+#define READ_BUFFER_SIZE 1024
+// #define MAXOUTPUTSIZE (MAX_BUFFERED_PIXELS / 16 / 16)
+#define MAXOUTPUTSIZE (288 / 3 / 16)
+#define NUMBER_OF_DECODE_BUFFER 3
+#define NUMBER_OF_DRAW_BUFFER 9
+
+#include <FS.h>
+#include <JPEGDEC.h>
+
+typedef struct
+{
+  int32_t size;
+  uint8_t *buf;
+} mjpegBuf;
+
+typedef struct
+{
+  xQueueHandle xqh;
+  JPEG_DRAW_CALLBACK *drawFunc;
+} paramDrawTask;
+
+typedef struct
+{
+  xQueueHandle xqh;
+  mjpegBuf *mBuf;
+  JPEG_DRAW_CALLBACK *drawFunc;
+} paramDecodeTask;
+
+static JPEGDRAW jpegdraws[NUMBER_OF_DRAW_BUFFER];
+static int _draw_queue_cnt = 0;
+static JPEGDEC _jpegDec;
+static xQueueHandle _xqh;
+static bool _useBigEndian;
+
+static unsigned long total_read_video_ms = 0;
+static unsigned long total_decode_video_ms = 0;
+static unsigned long total_show_video_ms = 0;
+
+Stream *_input;
+
+int32_t _mjpegBufufSize;
+
+uint8_t *_read_buf;
+int32_t _mjpeg_buf_offset = 0;
+
+TaskHandle_t _decodeTask;
+TaskHandle_t _draw_task;
+paramDecodeTask _pDecodeTask;
+paramDrawTask _pDrawTask;
+uint8_t *_mjpeg_buf;
+uint8_t _mBufIdx = 0;
+
+int32_t _inputindex = 0;
+int32_t _buf_read;
+int32_t _remain = 0;
+mjpegBuf _mjpegBufs[NUMBER_OF_DECODE_BUFFER];
+
+static int queueDrawMCU(JPEGDRAW *pDraw)
+{
+  int len = pDraw->iWidth * pDraw->iHeight * 2;
+  JPEGDRAW *j = &jpegdraws[_draw_queue_cnt % NUMBER_OF_DRAW_BUFFER];
+  j->x = pDraw->x;
+  j->y = pDraw->y;
+  j->iWidth = pDraw->iWidth;
+  j->iHeight = pDraw->iHeight;
+  memcpy(j->pPixels, pDraw->pPixels, len);
+
+  // log_i("queueDrawMCU start.");
+  ++_draw_queue_cnt;
+  xQueueSend(_xqh, &j, portMAX_DELAY);
+  // log_i("queueDrawMCU end.");
+
+  return 1;
+}
+
+static void decode_task(void *arg)
+{
+  paramDecodeTask *p = (paramDecodeTask *)arg;
+  mjpegBuf *mBuf;
+  log_i("decode_task start.");
+  while (xQueueReceive(p->xqh, &mBuf, portMAX_DELAY))
+  {
+    // log_i("mBuf->size: %d", mBuf->size);
+    // log_i("mBuf->buf start: %X %X, end: %X, %X.", mBuf->buf[0], mBuf->buf[1], mBuf->buf[mBuf->size - 2], mBuf->buf[mBuf->size - 1]);
+    unsigned long s = millis();
+
+    _jpegDec.openRAM(mBuf->buf, mBuf->size, p->drawFunc);
+
+    // _jpegDec.setMaxOutputSize(MAXOUTPUTSIZE);
+    if (_useBigEndian)
+    {
+      _jpegDec.setPixelType(RGB565_BIG_ENDIAN);
+    }
+    _jpegDec.setMaxOutputSize(MAXOUTPUTSIZE);
+    _jpegDec.decode(0, 0, 0);
+    _jpegDec.close();
+
+    total_decode_video_ms += millis() - s;
+  }
+  vQueueDelete(p->xqh);
+  log_i("decode_task end.");
+  vTaskDelete(NULL);
+}
+
+static void draw_task(void *arg)
+{
+  paramDrawTask *p = (paramDrawTask *)arg;
+  JPEGDRAW *pDraw;
+  log_i("draw_task start.");
+  while (xQueueReceive(p->xqh, &pDraw, portMAX_DELAY))
+  {
+    // log_i("draw_task work start: x: %d, y: %d, iWidth: %d, iHeight: %d.", pDraw->x, pDraw->y, pDraw->iWidth, pDraw->iHeight);
+    p->drawFunc(pDraw);
+    // log_i("draw_task work end.");
+  }
+  vQueueDelete(p->xqh);
+  log_i("draw_task end.");
+  vTaskDelete(NULL);
+}
+
+bool mjpeg_setup(Stream *input, int32_t mjpegBufufSize, JPEG_DRAW_CALLBACK *pfnDraw,
+                 bool useBigEndian, BaseType_t decodeAssignCore, BaseType_t drawAssignCore)
+{
+  _input = input;
+  _mjpegBufufSize = mjpegBufufSize;
+  _useBigEndian = useBigEndian;
+
+  for (int i = 0; i < NUMBER_OF_DECODE_BUFFER; ++i)
+  {
+    _mjpegBufs[i].buf = (uint8_t *)malloc(mjpegBufufSize);
+    if (_mjpegBufs[i].buf)
+    {
+      log_i("#%d decode buffer allocated.", i);
+    }
+    else
+    {
+      log_e("#%d decode buffer allocat failed.", i);
+    }
+  }
+  _mjpeg_buf = _mjpegBufs[_mBufIdx].buf;
+
+  if (!_read_buf)
+  {
+    _read_buf = (uint8_t *)malloc(READ_BUFFER_SIZE);
+  }
+  if (_read_buf)
+  {
+    log_i("Read buffer allocated.");
+  }
+
+  _xqh = xQueueCreate(NUMBER_OF_DRAW_BUFFER, sizeof(JPEGDRAW));
+  _pDrawTask.xqh = _xqh;
+  _pDrawTask.drawFunc = pfnDraw;
+  _pDecodeTask.xqh = xQueueCreate(NUMBER_OF_DECODE_BUFFER, sizeof(mjpegBuf));
+  _pDecodeTask.drawFunc = queueDrawMCU;
+
+  xTaskCreatePinnedToCore(
+      (TaskFunction_t)decode_task,
+      (const char *const)"MJPEG decode Task",
+      (const uint32_t)2000,
+      (void *const)&_pDecodeTask,
+      (UBaseType_t)configMAX_PRIORITIES - 1,
+      (TaskHandle_t *const)&_decodeTask,
+      (const BaseType_t)decodeAssignCore);
+  xTaskCreatePinnedToCore(
+      (TaskFunction_t)draw_task,
+      (const char *const)"MJPEG Draw Task",
+      (const uint32_t)2000,
+      (void *const)&_pDrawTask,
+      (UBaseType_t)configMAX_PRIORITIES - 1,
+      (TaskHandle_t *const)&_draw_task,
+      (const BaseType_t)drawAssignCore);
+
+  for (int i = 0; i < NUMBER_OF_DRAW_BUFFER; i++)
+  {
+    if (!jpegdraws[i].pPixels)
+    {
+      jpegdraws[i].pPixels = (uint16_t *)heap_caps_malloc(MAXOUTPUTSIZE * 16 * 16 * 2, MALLOC_CAP_DMA);
+    }
+    if (jpegdraws[i].pPixels)
+    {
+      log_i("#%d draw buffer allocated.", i);
+    }
+    else
+    {
+      log_e("#%d draw buffer allocat failed.", i);
+    }
+  }
+
+  return true;
+}
+
+bool mjpeg_read_frame()
+{
+  if (_inputindex == 0)
+  {
+    _buf_read = _input->readBytes(_read_buf, READ_BUFFER_SIZE);
+    _inputindex += _buf_read;
+  }
+  _mjpeg_buf_offset = 0;
+  int i = 0;
+  bool found_FFD8 = false;
+  while ((_buf_read > 0) && (!found_FFD8))
+  {
+    i = 0;
+    while ((i < _buf_read) && (!found_FFD8))
+    {
+      if ((_read_buf[i] == 0xFF) && (_read_buf[i + 1] == 0xD8)) // JPEG header
+      {
+        // log_i("Found FFD8 at: %d.", i);
+        found_FFD8 = true;
+      }
+      ++i;
+    }
+    if (found_FFD8)
+    {
+      --i;
+    }
+    else
+    {
+      _buf_read = _input->readBytes(_read_buf, READ_BUFFER_SIZE);
+    }
+  }
+  uint8_t *_p = _read_buf + i;
+  _buf_read -= i;
+  bool found_FFD9 = false;
+  if (_buf_read > 0)
+  {
+    i = 3;
+    while ((_buf_read > 0) && (!found_FFD9))
+    {
+      if ((_mjpeg_buf_offset > 0) && (_mjpeg_buf[_mjpeg_buf_offset - 1] == 0xFF) && (_p[0] == 0xD9)) // JPEG trailer
+      {
+        found_FFD9 = true;
+      }
+      else
+      {
+        while ((i < _buf_read) && (!found_FFD9))
+        {
+          if ((_p[i] == 0xFF) && (_p[i + 1] == 0xD9)) // JPEG trailer
+          {
+            found_FFD9 = true;
+            ++i;
+          }
+          ++i;
+        }
+      }
+
+      // log_i("i: %d", i);
+      memcpy(_mjpeg_buf + _mjpeg_buf_offset, _p, i);
+      _mjpeg_buf_offset += i;
+      int32_t o = _buf_read - i;
+      if (o > 0)
+      {
+        // log_i("o: %d", o);
+        memcpy(_read_buf, _p + i, o);
+        _buf_read = _input->readBytes(_read_buf + o, READ_BUFFER_SIZE - o);
+        _p = _read_buf;
+        _inputindex += _buf_read;
+        _buf_read += o;
+        // log_i("_buf_read: %d", _buf_read);
+      }
+      else
+      {
+        _buf_read = _input->readBytes(_read_buf, READ_BUFFER_SIZE);
+        _p = _read_buf;
+        _inputindex += _buf_read;
+      }
+      i = 0;
+    }
+    if (found_FFD9)
+    {
+      // log_i("Found FFD9 at: %d.", _mjpeg_buf_offset);
+      if (_mjpeg_buf_offset > _mjpegBufufSize) {
+        log_e("_mjpeg_buf_offset(%d) > _mjpegBufufSize (%d)", _mjpeg_buf_offset, _mjpegBufufSize);
+      }
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool mjpeg_draw_frame()
+{
+  mjpegBuf *mBuf = &_mjpegBufs[_mBufIdx];
+  mBuf->size = _mjpeg_buf_offset;
+  // log_i("_mjpegBufs[%d].size: %d.", _mBufIdx, _mjpegBufs[_mBufIdx].size);
+  // log_i("_mjpegBufs[%d].buf start: %X %X, end: %X, %X.", _mjpegBufs, _mjpegBufs[_mBufId].buf[0], _mjpegBufs[_mBufIdx].buf[1], _mjpegBufs[_mBufIdx].buf[_mjpeg_buf_offset - 2], _mjpegBufs[_mBufIdx].buf[_mjpeg_buf_offset - 1]);
+  xQueueSend(_pDecodeTask.xqh, &mBuf, portMAX_DELAY);
+  ++_mBufIdx;
+  if (_mBufIdx >= NUMBER_OF_DECODE_BUFFER)
+  {
+    _mBufIdx = 0;
+  }
+  _mjpeg_buf = _mjpegBufs[_mBufIdx].buf;
+  // log_i("queue decode_task end");
+
+  return true;
+}