/***************************************************************************
 *
 * Copyright 2015-2019 BES.
 * All rights reserved. All unpublished rights reserved.
 *
 * No part of this work may be used or reproduced in any form or by any
 * means, or stored in a database or retrieval system, without prior written
 * permission of BES.
 *
 * Use of this work is governed by a license granted by BES.
 * This work contains confidential and proprietary information of
 * BES. which is protected by copyright, trade secret,
 * trademark and other intellectual property rights.
 *
 ****************************************************************************/
// Standard C Included Files
#include "a2dp_decoder_internal.h"
#include "cmsis.h"
#include "cmsis_os.h"
#include "codec_sbc.h"
#include "hal_location.h"
#include "hal_timer.h"
#include "heap_api.h"
#include "plat_types.h"
#include <string.h>

#ifndef SBC_MTU_LIMITER
#define SBC_MTU_LIMITER (250) /*must <= 332*/
#endif
#define SBC_PCMLEN_DEFAULT (512)

#define SBC_LIST_SAMPLES (128)

static A2DP_AUDIO_CONTEXT_T *a2dp_audio_context_p = NULL;
extern A2DP_AUDIO_DECODER_T a2dp_audio_sbc_decoder_config;

typedef struct {
  btif_sbc_decoder_t *sbc_decoder;
  btif_sbc_pcm_data_t *pcm_data;
} a2dp_audio_sbc_decoder_t;

typedef struct {
  uint16_t sequenceNumber;
  uint32_t timestamp;
  uint16_t curSubSequenceNumber;
  uint16_t totalSubSequenceNumber;
  uint8_t *sbc_buffer;
  uint32_t sbc_buffer_len;
} a2dp_audio_sbc_decoder_frame_t;

static a2dp_audio_sbc_decoder_t a2dp_audio_sbc_decoder;
static btif_sbc_decoder_t *a2dp_audio_sbc_decoder_preparse = NULL;

static A2DP_AUDIO_DECODER_LASTFRAME_INFO_T a2dp_audio_sbc_lastframe_info;

static uint16_t sbc_mtu_limiter = SBC_MTU_LIMITER;

static btif_media_header_t sbc_decoder_last_valid_frame = {
    0,
};
static bool sbc_decoder_last_valid_frame_ready = false;
static bool sbc_chnl_mode_mono = false;

static int a2dp_audio_sbc_header_parser_init(void);

static void *a2dp_audio_sbc_subframe_malloc(uint32_t sbc_len) {
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame_p = NULL;
  uint8_t *sbc_buffer = NULL;

  sbc_buffer = (uint8_t *)a2dp_audio_heap_malloc(sbc_len);
  sbc_decoder_frame_p =
      (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_heap_malloc(
          sizeof(a2dp_audio_sbc_decoder_frame_t));
  sbc_decoder_frame_p->sbc_buffer = sbc_buffer;
  sbc_decoder_frame_p->sbc_buffer_len = sbc_len;
  return (void *)sbc_decoder_frame_p;
}

static void a2dp_audio_sbc_subframe_free(void *packet) {
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame_p =
      (a2dp_audio_sbc_decoder_frame_t *)packet;
  a2dp_audio_heap_free(sbc_decoder_frame_p->sbc_buffer);
  a2dp_audio_heap_free(sbc_decoder_frame_p);
}

static void sbc_codec_init(void) {
  btif_sbc_init_decoder(a2dp_audio_sbc_decoder.sbc_decoder);
  a2dp_audio_sbc_decoder.sbc_decoder->maxPcmLen = SBC_PCMLEN_DEFAULT;
  a2dp_audio_sbc_decoder.pcm_data->data = NULL;
  a2dp_audio_sbc_decoder.pcm_data->dataLen = 0;
}

#ifdef A2DP_CP_ACCEL
struct A2DP_CP_SBC_IN_FRM_INFO_T {
  uint16_t sequenceNumber;
  uint32_t timestamp;
  uint16_t curSubSequenceNumber;
  uint16_t totalSubSequenceNumber;
};

struct A2DP_CP_SBC_OUT_FRM_INFO_T {
  struct A2DP_CP_SBC_IN_FRM_INFO_T in_info;
  uint16_t frame_samples;
  uint16_t decoded_frames;
  uint16_t frame_idx;
  uint16_t pcm_len;
};

static bool cp_codec_reset;
extern "C" uint32_t get_in_cp_frame_cnt(void);
extern "C" unsigned int set_cp_reset_flag(uint8_t evt);

int a2dp_cp_sbc_cp_decode(void);

extern uint32_t app_bt_stream_get_dma_buffer_samples(void);

static int TEXT_SBC_LOC a2dp_cp_sbc_after_cache_underflow(void) {
#ifdef A2DP_CP_ACCEL
  cp_codec_reset = true;
#endif
  return 0;
}

static int a2dp_cp_sbc_mcu_decode(uint8_t *buffer, uint32_t buffer_bytes) {
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;
  list_node_t *node = NULL;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  int ret, dec_ret;
  struct A2DP_CP_SBC_IN_FRM_INFO_T in_info;
  struct A2DP_CP_SBC_OUT_FRM_INFO_T *p_out_info = NULL;
  uint8_t *out = NULL;
  uint32_t out_len;
  uint32_t out_frame_len;
  uint32_t cp_buffer_frames_max = 0;
  uint32_t check_sum = 0;

  cp_buffer_frames_max = app_bt_stream_get_dma_buffer_samples() / 2;
  if (cp_buffer_frames_max % (a2dp_audio_sbc_lastframe_info.frame_samples)) {
    cp_buffer_frames_max =
        cp_buffer_frames_max / (a2dp_audio_sbc_lastframe_info.frame_samples) +
        1;
  } else {
    cp_buffer_frames_max =
        cp_buffer_frames_max / (a2dp_audio_sbc_lastframe_info.frame_samples);
  }

  out_frame_len = sizeof(*p_out_info) + buffer_bytes;
  ret = a2dp_cp_decoder_init(out_frame_len, cp_buffer_frames_max * 2);
  if (ret) {
    TRACE_A2DP_DECODER_W("[SBC][INIT] cp_decoder_init() failed: ret=%d", ret);
    set_cp_reset_flag(true);
    return A2DP_DECODER_DECODE_ERROR;
  }
  while ((node = a2dp_audio_list_begin(list)) != NULL) {
    sbc_decoder_frame =
        (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);

    in_info.sequenceNumber = sbc_decoder_frame->sequenceNumber;
    in_info.timestamp = sbc_decoder_frame->timestamp;
    in_info.curSubSequenceNumber = sbc_decoder_frame->curSubSequenceNumber;
    in_info.totalSubSequenceNumber = sbc_decoder_frame->totalSubSequenceNumber;

    ret = a2dp_cp_put_in_frame(&in_info, sizeof(in_info),
                               sbc_decoder_frame->sbc_buffer,
                               sbc_decoder_frame->sbc_buffer_len);
    if (ret) {
      TRACE_A2DP_DECODER_D("[MCU][SBC] piff !!!!!!ret: %d ", ret);
      break;
    }
    check_sum = a2dp_audio_decoder_internal_check_sum_generate(
        sbc_decoder_frame->sbc_buffer, sbc_decoder_frame->sbc_buffer_len);
    a2dp_audio_list_remove(list, sbc_decoder_frame);
  }

  ret = a2dp_cp_get_full_out_frame((void **)&out, &out_len);
  if (ret) {
    if (!get_in_cp_frame_cnt()) {
      TRACE_A2DP_DECODER_I("[MCU][SBC] cp cache underflow list:%d in_cp:%d",
                           a2dp_audio_list_length(list), get_in_cp_frame_cnt());
      return A2DP_DECODER_CACHE_UNDERFLOW_ERROR;
    }
    if (!a2dp_audio_sysfreq_boost_running()) {
      a2dp_audio_sysfreq_boost_start(1);
    }
    osDelay(8);
    ret = a2dp_cp_get_full_out_frame((void **)&out, &out_len);
    if (ret) {
      TRACE_A2DP_DECODER_I("[MCU][SBC] cp cache underflow list:%d in_cp:%d",
                           a2dp_audio_list_length(list), get_in_cp_frame_cnt());
      a2dp_cp_sbc_after_cache_underflow();
      return A2DP_DECODER_CACHE_UNDERFLOW_ERROR;
    }
  }

  if (out_len == 0) {
    TRACE_A2DP_DECODER_I("[MCU][SBC]  olz!!!%d ", __LINE__);
    memset(buffer, 0, buffer_bytes);
    a2dp_cp_consume_full_out_frame();
    return A2DP_DECODER_NO_ERROR;
  }
  if (out_len != out_frame_len) {
    TRACE_A2DP_DECODER_I("[MCU][SBC] Bad out len %u (should be %u)", out_len,
                         out_frame_len);
    set_cp_reset_flag(true);
    return A2DP_DECODER_DECODE_ERROR;
  }
  p_out_info = (struct A2DP_CP_SBC_OUT_FRM_INFO_T *)out;
  if (p_out_info->pcm_len) {
    a2dp_audio_sbc_lastframe_info.sequenceNumber =
        p_out_info->in_info.sequenceNumber;
    a2dp_audio_sbc_lastframe_info.timestamp = p_out_info->in_info.timestamp;
    a2dp_audio_sbc_lastframe_info.curSubSequenceNumber =
        p_out_info->in_info.curSubSequenceNumber;
    a2dp_audio_sbc_lastframe_info.totalSubSequenceNumber =
        p_out_info->in_info.totalSubSequenceNumber;
    a2dp_audio_sbc_lastframe_info.frame_samples = p_out_info->frame_samples;
    a2dp_audio_sbc_lastframe_info.decoded_frames += p_out_info->decoded_frames;
    a2dp_audio_sbc_lastframe_info.undecode_frames =
        a2dp_audio_list_length(list) +
        a2dp_cp_get_in_frame_cnt_by_index(p_out_info->frame_idx) - 1;
    a2dp_audio_sbc_lastframe_info.check_sum =
        check_sum ? check_sum : a2dp_audio_sbc_lastframe_info.check_sum;
    a2dp_audio_decoder_internal_lastframe_info_set(
        &a2dp_audio_sbc_lastframe_info);
  }

  if (p_out_info->pcm_len == buffer_bytes) {
    memcpy(buffer, p_out_info + 1, p_out_info->pcm_len);
    dec_ret = A2DP_DECODER_NO_ERROR;
  } else {
    TRACE_A2DP_DECODER_I("[MCU][SBC] line:%d cp decoder error  !!!!!!",
                         __LINE__);
    set_cp_reset_flag(true);
    return A2DP_DECODER_DECODE_ERROR;
  }

  ret = a2dp_cp_consume_full_out_frame();
  if (ret) {
    TRACE_A2DP_DECODER_I("[MCU][SBC] cp_consume_full_out_frame failed: ret=%d",
                         ret);
    set_cp_reset_flag(true);
    return A2DP_DECODER_DECODE_ERROR;
  }
  return dec_ret;
}

#ifdef __CP_EXCEPTION_TEST__
static bool _cp_assert = false;
int cp_assert_sbc(void) {
  _cp_assert = true;
  return 0;
}
#endif

TEXT_SBC_LOC
int a2dp_cp_sbc_cp_decode(void) {
  int ret = 0;
  enum CP_EMPTY_OUT_FRM_T out_frm_st;
  uint8_t *out = NULL;
  uint32_t out_len = 0;
  uint8_t *dec_start = NULL;
  uint32_t dec_len = 0;
  struct A2DP_CP_SBC_IN_FRM_INFO_T *p_in_info = NULL;
  struct A2DP_CP_SBC_OUT_FRM_INFO_T *p_out_info = NULL;
  uint8_t *in_buf = NULL;
  uint32_t in_len = 0;
  uint16_t bytes_parsed = 0;
  float sbc_subbands_gain[8] = {1, 1, 1, 1, 1, 1, 1, 1};
  btif_sbc_decoder_t *sbc_decoder = NULL;
  btif_sbc_pcm_data_t *pcm_data = NULL;
  bt_status_t decoder_err = 0;
  int error = 0;

  if (cp_codec_reset) {
    cp_codec_reset = false;
    sbc_codec_init();
  }

#ifdef __CP_EXCEPTION_TEST__
  if (_cp_assert) {
    _cp_assert = false;
    *(int *)0 = 1;
    // ASSERT_A2DP_DECODER(0, "ASSERT_A2DP_DECODER  %s %d", __func__, __LINE__);
  }
#endif

  sbc_decoder = a2dp_audio_sbc_decoder.sbc_decoder;
  pcm_data = a2dp_audio_sbc_decoder.pcm_data;

  out_frm_st = a2dp_cp_get_emtpy_out_frame((void **)&out, &out_len);
  if (out_frm_st != CP_EMPTY_OUT_FRM_OK &&
      out_frm_st != CP_EMPTY_OUT_FRM_WORKING) {
    return 1;
  }

  ASSERT_A2DP_DECODER(out_len > sizeof(*p_out_info),
                      "[CP][SBC] Bad out_len %u (should > %u)", out_len,
                      sizeof(*p_out_info));

  p_out_info = (struct A2DP_CP_SBC_OUT_FRM_INFO_T *)out;
  if (out_frm_st == CP_EMPTY_OUT_FRM_OK) {
    p_out_info->pcm_len = 0;
    p_out_info->decoded_frames = 0;
  }
  ASSERT_A2DP_DECODER(out_len > sizeof(*p_out_info) + p_out_info->pcm_len,
                      "[CP][SBC] Bad out_len %u (should > %u + %u)", out_len,
                      sizeof(*p_out_info), p_out_info->pcm_len);

  dec_start = (uint8_t *)(p_out_info + 1) + p_out_info->pcm_len;
  dec_len = out_len - (dec_start - (uint8_t *)out);

  pcm_data->data = dec_start;
  pcm_data->dataLen = 0;
  error = 0;

  while (pcm_data->dataLen < dec_len && error == 0) {
    ret = a2dp_cp_get_in_frame((void **)&in_buf, &in_len);
    if (ret) {
      p_out_info->pcm_len += pcm_data->dataLen;
      return 4;
    }
    ASSERT_A2DP_DECODER(in_len > sizeof(*p_in_info),
                        "%s: Bad in_len %u (should > %u)", __func__, in_len,
                        sizeof(*p_in_info));

    p_in_info = (struct A2DP_CP_SBC_IN_FRM_INFO_T *)in_buf;
    in_buf += sizeof(*p_in_info);
    in_len -= sizeof(*p_in_info);

    decoder_err =
        btif_sbc_decode_frames(sbc_decoder, in_buf, in_len, &bytes_parsed,
                               pcm_data, dec_len, sbc_subbands_gain);
    switch (decoder_err) {
    case BT_STS_SUCCESS:
    case BT_STS_CONTINUE:
      break;
    case BT_STS_NO_RESOURCES:
      error = 1;
      ASSERT_A2DP_DECODER(0, "sbc_decode BT_STS_NO_RESOURCES pcm has no more "
                             "buffer, i think can't reach here");
      break;
    case BT_STS_FAILED:
    default:
      error = 1;
      sbc_codec_init();
      break;
    }

    memcpy(&p_out_info->in_info, p_in_info, sizeof(*p_in_info));
    p_out_info->decoded_frames++;
    p_out_info->frame_samples = sbc_decoder->maxPcmLen / 4;
    p_out_info->frame_idx = a2dp_cp_get_in_frame_index();

    ret = a2dp_cp_consume_in_frame();
    ASSERT_A2DP_DECODER(ret == 0,
                        "%s: a2dp_cp_consume_in_frame() failed: ret=%d",
                        __func__, ret);
  }

  p_out_info->pcm_len += pcm_data->dataLen;

  if (error || out_len <= sizeof(*p_out_info) + p_out_info->pcm_len) {
    ret = a2dp_cp_consume_emtpy_out_frame();
    ASSERT_A2DP_DECODER(ret == 0,
                        "%s: a2dp_cp_consume_emtpy_out_frame() failed: ret=%d",
                        __func__, ret);
  }

  return error;
}
#endif

static int a2dp_audio_sbc_list_checker(void) {
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  list_node_t *node = NULL;
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;
  int cnt = 0;

  do {
    sbc_decoder_frame =
        (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_sbc_subframe_malloc(
            SBC_LIST_SAMPLES);
    if (sbc_decoder_frame) {
      a2dp_audio_list_append(list, sbc_decoder_frame);
    }
    cnt++;
  } while (sbc_decoder_frame && cnt < SBC_MTU_LIMITER);

  do {
    node = a2dp_audio_list_begin(list);
    if (node) {
      sbc_decoder_frame =
          (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
      a2dp_audio_list_remove(list, sbc_decoder_frame);
    }
  } while (node);

  TRACE_A2DP_DECODER_I("[SBC][INIT] cnt:%d list:%d", cnt,
                       a2dp_audio_list_length(list));

  return 0;
}

int a2dp_audio_sbc_init(A2DP_AUDIO_OUTPUT_CONFIG_T *config, void *context) {
  TRACE_A2DP_DECODER_I("[SBC][INIT]");

  a2dp_audio_context_p = (A2DP_AUDIO_CONTEXT_T *)context;

  a2dp_audio_sbc_header_parser_init();
  memset(&a2dp_audio_sbc_lastframe_info, 0,
         sizeof(A2DP_AUDIO_DECODER_LASTFRAME_INFO_T));
  a2dp_audio_sbc_lastframe_info.stream_info = *config;
  a2dp_audio_sbc_lastframe_info.frame_samples = SBC_LIST_SAMPLES;
  a2dp_audio_sbc_lastframe_info.list_samples = SBC_LIST_SAMPLES;
  a2dp_audio_decoder_internal_lastframe_info_set(
      &a2dp_audio_sbc_lastframe_info);

  ASSERT_A2DP_DECODER(a2dp_audio_context_p->dest_packet_mut < SBC_MTU_LIMITER,
                      "%s MTU OVERFLOW:%u/%u", __func__,
                      a2dp_audio_context_p->dest_packet_mut, SBC_MTU_LIMITER);

  a2dp_audio_sbc_decoder.sbc_decoder =
      (btif_sbc_decoder_t *)a2dp_audio_heap_malloc(sizeof(btif_sbc_decoder_t));
  a2dp_audio_sbc_decoder.pcm_data =
      (btif_sbc_pcm_data_t *)a2dp_audio_heap_malloc(
          sizeof(btif_sbc_pcm_data_t));
  a2dp_audio_sbc_decoder_preparse =
      (btif_sbc_decoder_t *)a2dp_audio_heap_malloc(sizeof(btif_sbc_decoder_t));
#ifdef A2DP_CP_ACCEL
  int ret;
  cp_codec_reset = true;
  ret = a2dp_cp_init(a2dp_cp_sbc_cp_decode, CP_PROC_DELAY_2_FRAMES);
  ASSERT_A2DP_DECODER(ret == 0, "%s: a2dp_cp_init() failed: ret=%d", __func__,
                      ret);
#else
  sbc_codec_init();
#endif
  a2dp_audio_sbc_list_checker();
  sbc_chnl_mode_mono = false;
  return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_sbc_deinit(void) {
#ifdef A2DP_CP_ACCEL
  a2dp_cp_deinit();
#endif
  a2dp_audio_heap_free(a2dp_audio_sbc_decoder_preparse);
  a2dp_audio_heap_free(a2dp_audio_sbc_decoder.sbc_decoder);
  a2dp_audio_heap_free(a2dp_audio_sbc_decoder.pcm_data);

  TRACE_A2DP_DECODER_I("[SBC][DEINIT]");

  return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_sbc_mcu_decode_frame(uint8_t *buffer, uint32_t buffer_bytes) {
  bt_status_t ret = BT_STS_SUCCESS;
  uint16_t bytes_parsed = 0;
  float sbc_subbands_gain[8] = {1, 1, 1, 1, 1, 1, 1, 1};
  btif_sbc_decoder_t *sbc_decoder = NULL;
  btif_sbc_pcm_data_t *pcm_data = NULL;
  uint16_t frame_pcmbyte = 0;
  uint16_t pcm_output_byte = 0;
  bool cache_underflow = false;

  sbc_decoder = a2dp_audio_sbc_decoder.sbc_decoder;
  pcm_data = a2dp_audio_sbc_decoder.pcm_data;
  frame_pcmbyte = sbc_decoder->maxPcmLen;

  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;
  list_node_t *node = NULL;

  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;

  pcm_data->data = buffer;
  pcm_data->dataLen = 0;

  TRACE_A2DP_DECODER_D("[MCU][SBC] size:%d", a2dp_audio_list_length(list));

  for (pcm_output_byte = 0; pcm_output_byte < buffer_bytes;
       pcm_output_byte += frame_pcmbyte) {
    node = a2dp_audio_list_begin(list);

    if (node) {
      uint32_t lock;

      sbc_decoder_frame =
          (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);

      lock = int_lock();
      ret = btif_sbc_decode_frames(sbc_decoder, sbc_decoder_frame->sbc_buffer,
                                   sbc_decoder_frame->sbc_buffer_len,
                                   &bytes_parsed, pcm_data, buffer_bytes,
                                   sbc_subbands_gain);
      int_unlock(lock);
      TRACE_A2DP_DECODER_D("[MCU][SBC] seq:%d/%d/%d len:%d ret:%d used:%d",
                           sbc_decoder_frame->curSubSequenceNumber,
                           sbc_decoder_frame->totalSubSequenceNumber,
                           sbc_decoder_frame->sequenceNumber,
                           sbc_decoder_frame->sbc_buffer_len, ret,
                           bytes_parsed);

      a2dp_audio_sbc_lastframe_info.sequenceNumber =
          sbc_decoder_frame->sequenceNumber;
      a2dp_audio_sbc_lastframe_info.timestamp = sbc_decoder_frame->timestamp;
      a2dp_audio_sbc_lastframe_info.curSubSequenceNumber =
          sbc_decoder_frame->curSubSequenceNumber;
      a2dp_audio_sbc_lastframe_info.totalSubSequenceNumber =
          sbc_decoder_frame->totalSubSequenceNumber;
      a2dp_audio_sbc_lastframe_info.frame_samples = sbc_decoder->maxPcmLen / 4;
      a2dp_audio_sbc_lastframe_info.decoded_frames++;
      a2dp_audio_sbc_lastframe_info.undecode_frames =
          a2dp_audio_list_length(list) - 1;
      a2dp_audio_sbc_lastframe_info.check_sum =
          a2dp_audio_decoder_internal_check_sum_generate(
              sbc_decoder_frame->sbc_buffer, sbc_decoder_frame->sbc_buffer_len);
      a2dp_audio_decoder_internal_lastframe_info_set(
          &a2dp_audio_sbc_lastframe_info);
      a2dp_audio_list_remove(list, sbc_decoder_frame);
      switch (ret) {
      case BT_STS_SUCCESS:
        if (pcm_data->dataLen != buffer_bytes) {
          TRACE_A2DP_DECODER_W("[MCU][SBC] WARNING pcm buff mismatch %d/%d",
                               pcm_data->dataLen, buffer_bytes);
        }
        if (pcm_data->dataLen == buffer_bytes) {
          if (pcm_output_byte + frame_pcmbyte != buffer_bytes) {
            TRACE_A2DP_DECODER_W(
                "[MCU][SBC]WARNING loop not break %d/%d frame_pcm:%d",
                pcm_output_byte, buffer_bytes, frame_pcmbyte);
            goto exit;
          }
        }
        break;
      case BT_STS_CONTINUE:
        continue;
        break;
      case BT_STS_NO_RESOURCES:
        ASSERT_A2DP_DECODER(0, "sbc_decode BT_STS_NO_RESOURCES pcm has no more "
                               "buffer, i think can't reach here");
        break;
      case BT_STS_FAILED:
      default:
        sbc_codec_init();
        goto exit;
      }
    } else {
      TRACE_A2DP_DECODER_W("[MCU][SBC] A2DP PACKET CACHE UNDERFLOW");
      ret = BT_STS_FAILED;
      cache_underflow = true;
      goto exit;
    }
  }
exit:
  if (cache_underflow) {
    TRACE_A2DP_DECODER_W(
        "[MCU][SBC] A2DP PACKET CACHE UNDERFLOW need add some process");
    a2dp_audio_sbc_lastframe_info.undecode_frames = 0;
    a2dp_audio_sbc_lastframe_info.check_sum = 0;
    a2dp_audio_decoder_internal_lastframe_info_set(
        &a2dp_audio_sbc_lastframe_info);
    ret = A2DP_DECODER_CACHE_UNDERFLOW_ERROR;
  }
  return ret;
}

int a2dp_audio_sbc_decode_frame(uint8_t *buffer, uint32_t buffer_bytes) {
  int nRet = 0;
  if (sbc_chnl_mode_mono) {
    int i = 0;
    int16_t *src = NULL, *dest = NULL;
#ifdef A2DP_CP_ACCEL
    nRet = a2dp_cp_sbc_mcu_decode(buffer, buffer_bytes / 2);
#else
    nRet = a2dp_audio_sbc_mcu_decode_frame(buffer, buffer_bytes / 2);
#endif
    i = buffer_bytes / 2;
    dest = (int16_t *)buffer + i - 1;
    i = i / 2;
    src = (int16_t *)buffer + i - 1;
    for (; i >= 0; i--) {
      *dest = *src;
      dest--;
      *dest = *src;
      dest--;
      src--;
    }
  } else {
#ifdef A2DP_CP_ACCEL
    nRet = a2dp_cp_sbc_mcu_decode(buffer, buffer_bytes);
#else
    nRet = a2dp_audio_sbc_mcu_decode_frame(buffer, buffer_bytes);
#endif
  }
  return nRet;
}

int a2dp_audio_sbc_preparse_packet(btif_media_header_t *header, uint8_t *buffer,
                                   uint32_t buffer_bytes) {
  uint16_t bytes_parsed = 0;
  uint32_t frame_num = 0;
  uint8_t *parser_p = buffer;

  frame_num = *parser_p;
  parser_p++;
  buffer_bytes--;

  // TODO: Remove the following sbc init and decode codes. They might conflict
  // with the calls
  //       during CP process. CP process is triggered by audioflinger PCM
  //       callback.

  if (*parser_p != 0x9c) {
    TRACE_A2DP_DECODER_I("[SBC][PRE] ERROR SBC FRAME !!! frame_num:%d",
                         frame_num);
    DUMP8("%02x ", parser_p, 12);
  } else {
    btif_sbc_decode_frames_parser(a2dp_audio_sbc_decoder_preparse, parser_p,
                                  buffer_bytes, &bytes_parsed);
    TRACE_A2DP_DECODER_I(
        "[SBC][PRE] seq:%d tStmp:%08x smpR:%d ch:%d len:%d",
        header->sequenceNumber, header->timestamp,
        a2dp_audio_sbc_decoder_preparse->streamInfo.sampleFreq,
        a2dp_audio_sbc_decoder_preparse->streamInfo.channelMode,
        a2dp_audio_sbc_decoder_preparse->maxPcmLen);
    TRACE_A2DP_DECODER_I("[SBC][PRE] frmN:%d par:%d/%d", frame_num,
                         buffer_bytes, bytes_parsed);

    a2dp_audio_sbc_lastframe_info.sequenceNumber = header->sequenceNumber;
    a2dp_audio_sbc_lastframe_info.timestamp = header->timestamp;
    a2dp_audio_sbc_lastframe_info.curSubSequenceNumber = 0;
    a2dp_audio_sbc_lastframe_info.totalSubSequenceNumber = frame_num;
    a2dp_audio_sbc_lastframe_info.frame_samples =
        a2dp_audio_sbc_decoder_preparse->maxPcmLen / 4;
    a2dp_audio_sbc_lastframe_info.list_samples = SBC_LIST_SAMPLES;
    a2dp_audio_sbc_lastframe_info.decoded_frames = 0;
    a2dp_audio_sbc_lastframe_info.undecode_frames = 0;
    a2dp_audio_decoder_internal_lastframe_info_set(
        &a2dp_audio_sbc_lastframe_info);
  }
  if (a2dp_audio_sbc_decoder_preparse->streamInfo.channelMode ==
      BTIF_SBC_CHNL_MODE_MONO) {
    sbc_chnl_mode_mono = true;
  }
  return A2DP_DECODER_NO_ERROR;
}

static int a2dp_audio_sbc_header_parser_init(void) {
  a2dp_audio_sbc_decoder_config.auto_synchronize_support = true;
  sbc_decoder_last_valid_frame_ready = false;
  memset(&sbc_decoder_last_valid_frame, 0,
         sizeof(sbc_decoder_last_valid_frame));
  return 0;
}

static int a2dp_audio_sbc_packet_recover_save_last(
    btif_media_header_t *sbc_decoder_frame) {
  sbc_decoder_last_valid_frame = *sbc_decoder_frame;
  sbc_decoder_last_valid_frame_ready = true;
  return 0;
}

static int a2dp_audio_sbc_packet_recover_find_missing(
    btif_media_header_t *sbc_decoder_frame, uint8_t frame_cnt) {
  uint16_t diff_seq = 0;
  uint32_t diff_timestamp = 0;
  uint32_t diff = 0;
  uint32_t need_recover_pkt = 0;

  if (!sbc_decoder_last_valid_frame_ready) {
    return need_recover_pkt;
  }

  diff_seq = a2dp_audio_get_passed(sbc_decoder_frame->sequenceNumber,
                                   sbc_decoder_last_valid_frame.sequenceNumber,
                                   UINT16_MAX);
  diff_timestamp =
      a2dp_audio_get_passed(sbc_decoder_frame->timestamp,
                            sbc_decoder_last_valid_frame.timestamp, UINT32_MAX);
  if (diff_seq > 1) {
    diff = diff_timestamp / diff_seq;
    if (diff % SBC_LIST_SAMPLES == 0) {
      need_recover_pkt = diff_timestamp / SBC_LIST_SAMPLES;
      if (need_recover_pkt > frame_cnt) {
        need_recover_pkt -= frame_cnt;
      }
    } else {
      diff_seq--;
      need_recover_pkt = diff_seq * frame_cnt;
    }
    TRACE_A2DP_DECODER_W("[SBC][INPUT][PLC] seq:%d/%d stmp:%d/%d",
                         sbc_decoder_frame->sequenceNumber,
                         sbc_decoder_last_valid_frame.sequenceNumber,
                         sbc_decoder_frame->timestamp,
                         sbc_decoder_last_valid_frame.timestamp);
    TRACE_A2DP_DECODER_W(
        "[SBC][INPUT][PLC] diff_seq:%d diff_stmp:%d diff:%d missing:%d",
        diff_seq, diff_timestamp, diff, need_recover_pkt);
  }

  return need_recover_pkt;
}

static int a2dp_audio_sbc_packet_recover_proc(
    btif_media_header_t *sbc_decoder_frame,
    a2dp_audio_sbc_decoder_frame_t *sbc_raw_frame, uint8_t frame_cnt) {
  int nRet = A2DP_DECODER_NO_ERROR;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  int missing_pkt_cnt = 0;
  missing_pkt_cnt =
      a2dp_audio_sbc_packet_recover_find_missing(sbc_decoder_frame, frame_cnt);
  if (missing_pkt_cnt && sbc_raw_frame &&
      (a2dp_audio_list_length(list) + missing_pkt_cnt) < sbc_mtu_limiter) {
    for (uint8_t i = 0; i < missing_pkt_cnt; i++) {
      a2dp_audio_sbc_decoder_frame_t *frame_p =
          (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_sbc_subframe_malloc(
              sbc_raw_frame->sbc_buffer_len);
      if (!frame_p) {
        nRet = A2DP_DECODER_MEMORY_ERROR;
        goto exit;
      }
      frame_p->sequenceNumber = UINT16_MAX;
      frame_p->timestamp = UINT32_MAX;
      memcpy(frame_p->sbc_buffer, sbc_raw_frame->sbc_buffer,
             sbc_raw_frame->sbc_buffer_len);
      frame_p->sbc_buffer_len = sbc_raw_frame->sbc_buffer_len;
      a2dp_audio_list_append(list, frame_p);
    }
  }
exit:
  return nRet;
}

#define FRAME_LIST_MAX (20)
int a2dp_audio_sbc_store_packet(btif_media_header_t *header, uint8_t *buffer,
                                uint32_t buffer_bytes) {
  int nRet = A2DP_DECODER_NO_ERROR;

  uint32_t frame_cnt = 0;
  uint32_t frame_num = 0;
  uint32_t frame_len = 0;
  uint8_t *parser_p = buffer;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  uint16_t bytes_parsed = 0;
  a2dp_audio_sbc_decoder_frame_t *frame_list[FRAME_LIST_MAX] = {
      0,
  };
  uint8_t frame_list_idx = 0;
  bool find_err = false;
  uint32_t i = 0;

  frame_num = *parser_p;

  if (!frame_num) {
    TRACE_A2DP_DECODER_W("[SBC][INPUT] ERROR SBC FRAME !!! frame_num:%d",
                         frame_num);
    DUMP8("%02x ", parser_p, 12);
    return A2DP_DECODER_DECODE_ERROR;
  }

  parser_p++;
  buffer_bytes--;
  frame_len = buffer_bytes / frame_num;

  if ((a2dp_audio_list_length(list) + frame_num) < sbc_mtu_limiter) {
    for (i = 0; i < buffer_bytes; i += bytes_parsed, frame_cnt++) {
      bytes_parsed = 0;
      if (*(parser_p + i) == 0x9c) {
        if (btif_sbc_decode_frames_parser(a2dp_audio_sbc_decoder_preparse,
                                          parser_p + i, buffer_bytes,
                                          &bytes_parsed) != BT_STS_SUCCESS) {
          bytes_parsed = frame_len;
          TRACE_A2DP_DECODER_W("[SBC][INPUT] ERROR SBC FRAME PARSER !!!");
          DUMP8("%02x ", parser_p + i, 12);
          find_err = true;
          break;
        }
        a2dp_audio_sbc_decoder_frame_t *frame_p =
            (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_sbc_subframe_malloc(
                bytes_parsed);
        if (!frame_p) {
          nRet = A2DP_DECODER_MEMORY_ERROR;
          find_err = true;
          break;
        }
        frame_p->sequenceNumber = header->sequenceNumber;
        frame_p->timestamp = header->timestamp;
        frame_p->curSubSequenceNumber = frame_cnt;
        frame_p->totalSubSequenceNumber = frame_num;
        memcpy(frame_p->sbc_buffer, (parser_p + i), bytes_parsed);
        frame_p->sbc_buffer_len = bytes_parsed;
        frame_list[frame_list_idx++] = frame_p;
        if (frame_list_idx >= FRAME_LIST_MAX) {
          find_err = true;
          break;
        }
      } else {
        TRACE_A2DP_DECODER_W("[SBC][INPUT] ERROR SBC FRAME !!!");
        DUMP8("%02x ", parser_p + i, 12);
        find_err = true;
        break;
      }
    }
    if (find_err) {
      TRACE_A2DP_DECODER_W("[SBC][INPUT] FIND ERR !!!");
      for (i = 0; i < frame_list_idx; i++) {
        a2dp_audio_sbc_subframe_free(frame_list[i]);
      }
      nRet = A2DP_DECODER_DECODE_ERROR;
    } else {
      a2dp_audio_sbc_packet_recover_proc(header, frame_list[0], frame_num);
      a2dp_audio_sbc_packet_recover_save_last(header);
      for (i = 0; i < frame_list_idx; i++) {
        a2dp_audio_list_append(list, frame_list[i]);
      }
      nRet = A2DP_DECODER_NO_ERROR;
    }
  } else {
    TRACE_A2DP_DECODER_W("[SBC][INPUT] OVERFLOW list:%d",
                         a2dp_audio_list_length(list));
    nRet = A2DP_DECODER_MTU_LIMTER_ERROR;
  }

  return nRet;
}

int a2dp_audio_sbc_discards_packet(uint32_t packets) {
  int nRet = A2DP_DECODER_MEMORY_ERROR;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  list_node_t *node = NULL;
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;
  uint16_t totalSubSequenceNumber;
  uint8_t j = 0;

#ifdef A2DP_CP_ACCEL
  a2dp_cp_reset_frame();
#endif

  node = a2dp_audio_list_begin(list);
  if (!node) {
    goto exit;
  }
  sbc_decoder_frame =
      (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);

  for (j = 0; j < a2dp_audio_list_length(list); j++) {
    node = a2dp_audio_list_begin(list);
    if (!node) {
      goto exit;
    }
    sbc_decoder_frame =
        (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
    if (sbc_decoder_frame->curSubSequenceNumber != 0) {
      a2dp_audio_list_remove(list, sbc_decoder_frame);
    } else {
      break;
    }
  }

  node = a2dp_audio_list_begin(list);
  if (!node) {
    goto exit;
  }
  sbc_decoder_frame =
      (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
  ASSERT_A2DP_DECODER(sbc_decoder_frame->curSubSequenceNumber == 0,
                      "sbc_discards_packet not align curSubSequenceNumber:%d",
                      sbc_decoder_frame->curSubSequenceNumber);

  totalSubSequenceNumber = sbc_decoder_frame->totalSubSequenceNumber;

  if (packets <= a2dp_audio_list_length(list) / totalSubSequenceNumber) {
    for (uint8_t i = 0; i < packets; i++) {
      for (j = 0; j < totalSubSequenceNumber; j++) {
        node = a2dp_audio_list_begin(list);
        if (!node) {
          goto exit;
        }
        sbc_decoder_frame =
            (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
        a2dp_audio_list_remove(list, sbc_decoder_frame);
      }
    }
    nRet = A2DP_DECODER_NO_ERROR;
  }
exit:
  TRACE_A2DP_DECODER_I("[SBC][DISCARDS] packets:%d nRet:%d", packets, nRet);
  return nRet;
}

int a2dp_audio_sbc_headframe_info_get(
    A2DP_AUDIO_HEADFRAME_INFO_T *headframe_info) {
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  list_node_t *node = NULL;
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;

  if (a2dp_audio_list_length(list) &&
      ((node = a2dp_audio_list_begin(list)) != NULL)) {
    sbc_decoder_frame =
        (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
    headframe_info->sequenceNumber = sbc_decoder_frame->sequenceNumber;
    headframe_info->timestamp = sbc_decoder_frame->timestamp;
    headframe_info->curSubSequenceNumber =
        sbc_decoder_frame->curSubSequenceNumber;
    headframe_info->totalSubSequenceNumber =
        sbc_decoder_frame->totalSubSequenceNumber;
  } else {
    memset(headframe_info, 0, sizeof(A2DP_AUDIO_HEADFRAME_INFO_T));
  }

  return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_sbc_info_get(void *info) { return A2DP_DECODER_NO_ERROR; }

int a2dp_audio_sbc_synchronize_packet(A2DP_AUDIO_SYNCFRAME_INFO_T *sync_info,
                                      uint32_t mask) {
  int nRet = A2DP_DECODER_SYNC_ERROR;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  list_node_t *node = NULL;
  int list_len;
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;

#ifdef A2DP_CP_ACCEL
  a2dp_cp_reset_frame();
#endif

  list_len = a2dp_audio_list_length(list);

  for (uint16_t i = 0; i < list_len; i++) {
    node = a2dp_audio_list_begin(list);
    if (node) {
      sbc_decoder_frame =
          (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
      if (A2DP_AUDIO_SYNCFRAME_CHK(sbc_decoder_frame->sequenceNumber ==
                                       sync_info->sequenceNumber,
                                   A2DP_AUDIO_SYNCFRAME_MASK_SEQ, mask) &&
          A2DP_AUDIO_SYNCFRAME_CHK(sbc_decoder_frame->curSubSequenceNumber ==
                                       sync_info->curSubSequenceNumber,
                                   A2DP_AUDIO_SYNCFRAME_MASK_CURRSUBSEQ,
                                   mask) &&
          A2DP_AUDIO_SYNCFRAME_CHK(sbc_decoder_frame->totalSubSequenceNumber ==
                                       sync_info->totalSubSequenceNumber,
                                   A2DP_AUDIO_SYNCFRAME_MASK_TOTALSUBSEQ,
                                   mask)) {
        nRet = A2DP_DECODER_NO_ERROR;
        break;
      }
      a2dp_audio_list_remove(list, sbc_decoder_frame);
    }
  }

  node = a2dp_audio_list_begin(list);
  if (node) {
    sbc_decoder_frame =
        (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
    TRACE_A2DP_DECODER_I(
        "[MCU][SYNC][SBC] sync pkt nRet:%d SEQ:%d timestamp:%d %d/%d", nRet,
        sbc_decoder_frame->sequenceNumber, sbc_decoder_frame->timestamp,
        sbc_decoder_frame->curSubSequenceNumber,
        sbc_decoder_frame->totalSubSequenceNumber);
  } else {
    TRACE_A2DP_DECODER_I("[MCU][SYNC][SBC] sync pkt nRet:%d", nRet);
  }

  return nRet;
}

int a2dp_audio_sbc_synchronize_dest_packet_mut(uint16_t packet_mut) {
  list_node_t *node = NULL;
  uint32_t list_len = 0;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;

  list_len = a2dp_audio_list_length(list);
  if (list_len > packet_mut) {
    do {
      node = a2dp_audio_list_begin(list);
      if (node) {
        sbc_decoder_frame =
            (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
        a2dp_audio_list_remove(list, sbc_decoder_frame);
      }
    } while (a2dp_audio_list_length(list) > packet_mut);
  }

  TRACE_A2DP_DECODER_I("[MCU][SYNC][SBC] dest pkt list:%d",
                       a2dp_audio_list_length(list));

  return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_sbc_convert_list_to_samples(uint32_t *samples) {
  uint32_t list_len = 0;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;

  list_len = a2dp_audio_list_length(list);
  *samples = SBC_LIST_SAMPLES * list_len;

  TRACE_A2DP_DECODER_I("[MCU][SBC] list:%d samples:%d", list_len, *samples);

  return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_sbc_discards_samples(uint32_t samples) {
  int nRet = A2DP_DECODER_SYNC_ERROR;
  list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
  a2dp_audio_sbc_decoder_frame_t *sbc_decoder_frame = NULL;
  list_node_t *node = NULL;
  int need_remove_list = 0;
  uint32_t list_samples = 0;
  ASSERT_A2DP_DECODER(!(samples % SBC_LIST_SAMPLES), "%s samples err:%d",
                      __func__, samples);

  a2dp_audio_sbc_convert_list_to_samples(&list_samples);
  if (list_samples >= samples) {
    need_remove_list = samples / SBC_LIST_SAMPLES;
    for (int i = 0; i < need_remove_list; i++) {
      node = a2dp_audio_list_begin(list);
      if (node) {
        sbc_decoder_frame =
            (a2dp_audio_sbc_decoder_frame_t *)a2dp_audio_list_node(node);
        a2dp_audio_list_remove(list, sbc_decoder_frame);
      }
    }
    nRet = A2DP_DECODER_NO_ERROR;
  }

  return nRet;
}

int a2dp_audio_sbc_channel_select(A2DP_AUDIO_CHANNEL_SELECT_E chnl_sel) {
  return A2DP_DECODER_NO_ERROR;
}

A2DP_AUDIO_DECODER_T a2dp_audio_sbc_decoder_config = {
    {44100, 2, 16},
    1,
    a2dp_audio_sbc_init,
    a2dp_audio_sbc_deinit,
    a2dp_audio_sbc_decode_frame,
    a2dp_audio_sbc_preparse_packet,
    a2dp_audio_sbc_store_packet,
    a2dp_audio_sbc_discards_packet,
    a2dp_audio_sbc_synchronize_packet,
    a2dp_audio_sbc_synchronize_dest_packet_mut,
    a2dp_audio_sbc_convert_list_to_samples,
    a2dp_audio_sbc_discards_samples,
    a2dp_audio_sbc_headframe_info_get,
    a2dp_audio_sbc_info_get,
    a2dp_audio_sbc_subframe_free,
    a2dp_audio_sbc_channel_select,
};