/***************************************************************************
 *
 * 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 All unpublished rights reserved.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 "cmsis.h"
#include "plat_types.h"
#include <string.h>
#include "heap_api.h"
#include "hal_location.h"
#include "hal_timer.h"
#include "a2dp_decoder_internal.h"
#include "cmsis_os.h"

#if defined(A2DP_AAC_ON)
#include "heap_api.h"
#include "aacdecoder_lib.h"
#include "aacenc_lib.h"

#ifndef AAC_MTU_LIMITER
#define AAC_MTU_LIMITER (32) /*must <= 23*/
#endif
#define AAC_OUTPUT_FRAME_SAMPLES (1024)
#define DECODE_AAC_PCM_FRAME_LENGTH  (2048)

#define AAC_READBUF_SIZE (900)

#define AAC_MEMPOOL_SIZE (40596)

typedef struct {
    uint16_t sequenceNumber;
    uint32_t timestamp;
    uint8_t *aac_buffer;
    uint32_t aac_buffer_len;
} a2dp_audio_aac_decoder_frame_t;

int a2dp_audio_aac_lc_reorder_init(void);
int a2dp_audio_aac_lc_reorder_deinit(void);

static A2DP_AUDIO_CONTEXT_T *a2dp_audio_context_p = NULL;

static HANDLE_AACDECODER aacDec_handle = NULL;
static uint8_t *aac_mempoll = NULL;
heap_handle_t aac_memhandle = NULL;

static A2DP_AUDIO_DECODER_LASTFRAME_INFO_T a2dp_audio_aac_lastframe_info;

static uint16_t aac_mtu_limiter = AAC_MTU_LIMITER;

static a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_reorder_p = NULL;
static a2dp_audio_aac_decoder_frame_t aac_decoder_last_valid_frame = {0,};
static bool aac_decoder_last_valid_frame_ready = false;

static void *a2dp_audio_aac_lc_frame_malloc(uint32_t packet_len)
{
    a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = NULL;
    uint8_t *aac_buffer = NULL;

    aac_buffer = (uint8_t *)a2dp_audio_heap_malloc(AAC_READBUF_SIZE);
    aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_heap_malloc(sizeof(a2dp_audio_aac_decoder_frame_t));
    aac_decoder_frame_p->aac_buffer = aac_buffer;
    aac_decoder_frame_p->aac_buffer_len = packet_len;
    return (void *)aac_decoder_frame_p;
}

static void a2dp_audio_aac_lc_free(void *packet)
{
    a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)packet;
    a2dp_audio_heap_free(aac_decoder_frame_p->aac_buffer);
    a2dp_audio_heap_free(aac_decoder_frame_p);
}

static void a2dp_audio_aac_lc_decoder_init(void)
{
    if (aacDec_handle == NULL){
        TRANSPORT_TYPE transportFmt = TT_MP4_LATM_MCP1;

        aacDec_handle = aacDecoder_Open(transportFmt, 1 /* nrOfLayers */);
        ASSERT_A2DP_DECODER(aacDec_handle, "aacDecoder_Open failed");

        aacDecoder_SetParam(aacDec_handle,AAC_PCM_LIMITER_ENABLE,0);
        aacDecoder_SetParam(aacDec_handle, AAC_DRC_ATTENUATION_FACTOR, 0);
        aacDecoder_SetParam(aacDec_handle, AAC_DRC_BOOST_FACTOR, 0);
    }
}

static void a2dp_audio_aac_lc_decoder_deinit(void)
{
    if (aacDec_handle){
        aacDecoder_Close(aacDec_handle);
        aacDec_handle = NULL;
    }
}

static void a2dp_audio_aac_lc_decoder_reinit(void)
{
    if (aacDec_handle){
        a2dp_audio_aac_lc_decoder_deinit();
    }
    a2dp_audio_aac_lc_decoder_init();
}

#ifdef A2DP_CP_ACCEL
struct A2DP_CP_AAC_LC_IN_FRM_INFO_T {
    uint16_t sequenceNumber;
    uint32_t timestamp;
};

struct A2DP_CP_AAC_LC_OUT_FRM_INFO_T {
    struct A2DP_CP_AAC_LC_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);
extern uint32_t app_bt_stream_get_dma_buffer_samples(void);

int a2dp_cp_aac_lc_cp_decode(void);

static int TEXT_AAC_LOC a2dp_cp_aac_lc_after_cache_underflow(void)
{
#ifdef A2DP_CP_ACCEL
    cp_codec_reset = true;
#endif
    return 0;
}

static int a2dp_cp_aac_lc_mcu_decode(uint8_t *buffer, uint32_t buffer_bytes)
{
    a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = 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_AAC_LC_IN_FRM_INFO_T in_info;
    struct A2DP_CP_AAC_LC_OUT_FRM_INFO_T *p_out_info;
    uint8_t *out;
    uint32_t out_len;
    uint32_t out_frame_len;
    uint32_t check_sum = 0;


    uint32_t cp_buffer_frames_max = 0;
    cp_buffer_frames_max = app_bt_stream_get_dma_buffer_samples()/2;
    if (cp_buffer_frames_max %(a2dp_audio_aac_lastframe_info.frame_samples) ){
        cp_buffer_frames_max =  cp_buffer_frames_max /(a2dp_audio_aac_lastframe_info.frame_samples) +1  ;
    }else{
        cp_buffer_frames_max =  cp_buffer_frames_max /(a2dp_audio_aac_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("[MCU][AAC] 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) {
        aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);

        in_info.sequenceNumber = aac_decoder_frame_p->sequenceNumber;
        in_info.timestamp = aac_decoder_frame_p->timestamp;

        ret = a2dp_cp_put_in_frame(&in_info, sizeof(in_info), aac_decoder_frame_p->aac_buffer, aac_decoder_frame_p->aac_buffer_len);
        if (ret) {
          TRACE_A2DP_DECODER_D("[MCU][AAC] piff !!!!!!ret: %d ", ret);
           break;
        }
        check_sum = a2dp_audio_decoder_internal_check_sum_generate(aac_decoder_frame_p->aac_buffer, aac_decoder_frame_p->aac_buffer_len);
        a2dp_audio_list_remove(list, aac_decoder_frame_p);
    }
    ret = a2dp_cp_get_full_out_frame((void **)&out, &out_len);
    if (ret) {
        if (!get_in_cp_frame_cnt()){
            TRACE_A2DP_DECODER_I("[MCU][AAC] 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(12);
        ret = a2dp_cp_get_full_out_frame((void **)&out, &out_len);
        if (ret) {
            TRACE_A2DP_DECODER_I("[MCU][AAC] cp cache underflow list:%d in_cp:%d",a2dp_audio_list_length(list), get_in_cp_frame_cnt());
            a2dp_cp_aac_lc_after_cache_underflow();
            return A2DP_DECODER_CACHE_UNDERFLOW_ERROR;
        }
    }

    if (out_len == 0) {
        memset(buffer, 0, buffer_bytes);
        a2dp_cp_consume_full_out_frame();
        TRACE_A2DP_DECODER_I("[MCU][AAC] olz!!!%d ", __LINE__);
        return A2DP_DECODER_NO_ERROR;
    }
    if (out_len != out_frame_len){
        TRACE_A2DP_DECODER_I("[MCU][AAC] 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_AAC_LC_OUT_FRM_INFO_T *)out;
    if (p_out_info->pcm_len) {
        a2dp_audio_aac_lastframe_info.sequenceNumber = p_out_info->in_info.sequenceNumber;
        a2dp_audio_aac_lastframe_info.timestamp = p_out_info->in_info.timestamp;
        a2dp_audio_aac_lastframe_info.curSubSequenceNumber = 0;
        a2dp_audio_aac_lastframe_info.totalSubSequenceNumber = 0;
        a2dp_audio_aac_lastframe_info.frame_samples = p_out_info->frame_samples;
        a2dp_audio_aac_lastframe_info.decoded_frames += p_out_info->decoded_frames;
        a2dp_audio_aac_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_aac_lastframe_info.check_sum= check_sum?check_sum:a2dp_audio_aac_lastframe_info.check_sum;
        a2dp_audio_decoder_internal_lastframe_info_set(&a2dp_audio_aac_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][AAC] olne!!!%d ", __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][AAC] 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(void)
{
    _cp_assert = true;
    return 0;
}
#endif

TEXT_AAC_LOC
int a2dp_cp_aac_lc_cp_decode(void)
{
    int ret;
    enum CP_EMPTY_OUT_FRM_T out_frm_st;
    uint8_t *out;
    uint32_t out_len;
    bool need_refill = false;
    uint8_t *dec_start;
    uint32_t dec_len;
    struct A2DP_CP_AAC_LC_IN_FRM_INFO_T *p_in_info;
    struct A2DP_CP_AAC_LC_OUT_FRM_INFO_T *p_out_info;
    uint8_t *in_buf;
    uint32_t in_len;
    uint32_t dec_sum;
    int error;
    uint32_t aac_maxreadBytes = AAC_READBUF_SIZE;
    UINT bufferSize = 0, bytesValid = 0;
    AAC_DECODER_ERROR decoder_err = AAC_DEC_OK;
    CStreamInfo *stream_info=NULL;
    if (cp_codec_reset) {
        cp_codec_reset = false;
        a2dp_audio_aac_lc_decoder_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
    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), "%s: Bad out_len %u (should > %u)", __func__, out_len, sizeof(*p_out_info));

    p_out_info = (struct A2DP_CP_AAC_LC_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, "%s: Bad out_len %u (should > %u + %u)", __func__, 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);

    if(dec_len < DECODE_AAC_PCM_FRAME_LENGTH){
        TRACE_A2DP_DECODER_W("[CP][AAC] aac_lc_decode pcm_len = %d \n", dec_len);
        return 2;
    }
    if(!aacDec_handle){
        TRACE_A2DP_DECODER_W("[CP][AAC] aac_lc_decode not ready");
        return 3;
    }

    dec_sum = 0;
    error = 0;

    while (dec_sum < dec_len && error == 0) {
        ret = a2dp_cp_get_in_frame((void **)&in_buf, &in_len);
        if (ret) {
            return 4;
        }
        ASSERT_A2DP_DECODER(in_len > sizeof(*p_in_info), "[CP][AAC] Bad in_len %u (should > %u)", in_len, sizeof(*p_in_info));

        p_in_info = (struct A2DP_CP_AAC_LC_IN_FRM_INFO_T *)in_buf;
        if (need_refill){
            p_in_info->sequenceNumber = UINT16_MAX;
        }
        in_buf += sizeof(*p_in_info);
        in_len -= sizeof(*p_in_info);

        if (in_len < 64)
            aac_maxreadBytes = 64;
        else if (in_len < 128)
            aac_maxreadBytes = 128;
        else if (in_len < 256)
            aac_maxreadBytes = 256;
        else if (in_len < 512)
            aac_maxreadBytes = 512;
        else if (in_len < 1024)
            aac_maxreadBytes = 1024;

        bufferSize = aac_maxreadBytes;
        bytesValid = aac_maxreadBytes;
        decoder_err = aacDecoder_Fill(aacDec_handle, &in_buf, &bufferSize, &bytesValid);
        if (decoder_err != AAC_DEC_OK) {
            TRACE_A2DP_DECODER_W("[CP][AAC] decoder_Fill failed:0x%x", decoder_err);
            //if aac failed reopen it again
            if(is_aacDecoder_Close(aacDec_handle)){
                a2dp_audio_aac_lc_decoder_reinit();
                TRACE_A2DP_DECODER_I("[CP][AAC] aac_lc_decode reinin codec \n");
            }
            error = 1;
            goto end_decode;
        }

        /* decode one AAC frame */
        decoder_err = aacDecoder_DecodeFrame(aacDec_handle, (short *)(dec_start + dec_sum), (dec_len - dec_sum) / 2, 0 /* flags */);
        TRACE_A2DP_DECODER_D("[CP][AAC] decoder seq:%d len:%d err:%x", p_in_info->sequenceNumber,
                                                                (dec_len - dec_sum),
                                                                decoder_err);
        if (decoder_err != AAC_DEC_OK){
            TRACE_A2DP_DECODER_W("[CP][AAC] aac_lc_decode failed:0x%x seq:%d", decoder_err, p_in_info->sequenceNumber);
            //if aac failed reopen it again
            a2dp_audio_aac_lc_decoder_reinit();
            TRACE_A2DP_DECODER_I("[CP][AAC]aac_lc_decode reinin codec \n");
            if(!need_refill){
                need_refill = true;
                ret = a2dp_cp_consume_in_frame();
                ASSERT(ret == 0, "%s: a2dp_cp_consume_in_frame() failed: ret=%d", __func__, ret);
                continue;
            }else{
                need_refill = false;
                error = 1;
                goto end_decode;
            }
        }

        stream_info = aacDecoder_GetStreamInfo(aacDec_handle);
        if (!stream_info || stream_info->sampleRate <= 0) {
            TRACE_A2DP_DECODER_I("[CP][AAC]aac_lc_decode invalid stream info");
            error = 1;
            goto end_decode;
        }

        bufferSize = stream_info->frameSize * stream_info->numChannels * 2;//sizeof(pcm_buffer[0]);
        ASSERT_A2DP_DECODER(AAC_OUTPUT_FRAME_SAMPLES == bufferSize/4, "aac_lc_decode output mismatch samples:%d", bufferSize/4);

        dec_sum += bufferSize;

end_decode:
        memcpy(&p_out_info->in_info, p_in_info, sizeof(*p_in_info));
        p_out_info->decoded_frames++;
        p_out_info->frame_samples = AAC_OUTPUT_FRAME_SAMPLES;
        p_out_info->frame_idx = a2dp_cp_get_in_frame_index();
        if (need_refill){
            TRACE_A2DP_DECODER_W("[CP][AAC] resume refill seq:%d", p_in_info->sequenceNumber);
        }else{
            ret = a2dp_cp_consume_in_frame();
            ASSERT_A2DP_DECODER(ret == 0, "[CP][AAC] a2dp_cp_consume_in_frame() failed: ret=%d", ret);
        }
    }

    p_out_info->pcm_len += dec_sum;

    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, "[CP][AAC] a2dp_cp_consume_emtpy_out_frame() failed: ret=%d", ret);
    }

    return error;
}
#endif

static int a2dp_audio_aac_lc_list_checker(void)
{
    list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
    list_node_t *node = NULL;
    a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = NULL;
    int cnt = 0;

    do {
        aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_aac_lc_frame_malloc(0);
        if (aac_decoder_frame_p){
            a2dp_audio_list_append(list, aac_decoder_frame_p);
        }
        cnt++;
    }while(aac_decoder_frame_p && cnt < AAC_MTU_LIMITER);

    do {
        if ((node = a2dp_audio_list_begin(list)) != NULL){
            aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
            a2dp_audio_list_remove(list, aac_decoder_frame_p);
        }
    }while(node);

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

    return 0;
}

int a2dp_audio_aac_lc_channel_select(A2DP_AUDIO_CHANNEL_SELECT_E chnl_sel)
{   
    AAC_DECODER_CHANNEL_SELECT_E aac_decoder_channel_select = AAC_DECODER_CHANNEL_SELECT_SELECT_STEREO;
    switch(chnl_sel)
    {
        case A2DP_AUDIO_CHANNEL_SELECT_STEREO:
            aac_decoder_channel_select = AAC_DECODER_CHANNEL_SELECT_SELECT_STEREO;
            break;
        case A2DP_AUDIO_CHANNEL_SELECT_LRMERGE:
            aac_decoder_channel_select = AAC_DECODER_CHANNEL_SELECT_SELECT_LRMERGE;
            break;
        case A2DP_AUDIO_CHANNEL_SELECT_LCHNL:
            aac_decoder_channel_select = AAC_DECODER_CHANNEL_SELECT_LCHNL;
           break;
        case A2DP_AUDIO_CHANNEL_SELECT_RCHNL:
            aac_decoder_channel_select = AAC_DECODER_CHANNEL_SELECT_RCHNL;
        default:
            break;        
    }
    aacDecoder_DecodeFrame_Config(aac_decoder_channel_select);

    return 0;
}

int a2dp_audio_aac_lc_init(A2DP_AUDIO_OUTPUT_CONFIG_T *config, void *context)
{
    TRACE_A2DP_DECODER_I("[AAC] init");

    a2dp_audio_context_p = (A2DP_AUDIO_CONTEXT_T *)context;

    memset(&a2dp_audio_aac_lastframe_info, 0, sizeof(A2DP_AUDIO_DECODER_LASTFRAME_INFO_T));
    a2dp_audio_aac_lastframe_info.stream_info = *config;
    a2dp_audio_aac_lastframe_info.frame_samples = AAC_OUTPUT_FRAME_SAMPLES;
    a2dp_audio_aac_lastframe_info.list_samples = AAC_OUTPUT_FRAME_SAMPLES;
    a2dp_audio_decoder_internal_lastframe_info_set(&a2dp_audio_aac_lastframe_info);

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

    aac_mempoll = (uint8_t *)a2dp_audio_heap_malloc(AAC_MEMPOOL_SIZE);
    ASSERT_A2DP_DECODER(aac_mempoll, "aac_mempoll = NULL");
    aac_memhandle = heap_register(aac_mempoll, AAC_MEMPOOL_SIZE);

#ifdef A2DP_CP_ACCEL
    int ret;

    cp_codec_reset = true;
    ret = a2dp_cp_init(a2dp_cp_aac_lc_cp_decode, CP_PROC_DELAY_2_FRAMES);
    ASSERT_A2DP_DECODER(ret == 0, "%s: a2dp_cp_init() failed: ret=%d", __func__, ret);
#else
    a2dp_audio_aac_lc_decoder_init();
#endif
    a2dp_audio_aac_lc_reorder_init();
    a2dp_audio_aac_lc_list_checker();

    a2dp_audio_aac_lc_channel_select(a2dp_audio_context_p->chnl_sel);

    return A2DP_DECODER_NO_ERROR;
}


int a2dp_audio_aac_lc_deinit(void)
{
#ifdef A2DP_CP_ACCEL
    a2dp_cp_deinit();
#endif
    a2dp_audio_aac_lc_decoder_deinit();
    a2dp_audio_aac_lc_reorder_deinit();
    size_t total = 0, used = 0, max_used = 0;
    heap_memory_info(aac_memhandle, &total, &used, &max_used);
    a2dp_audio_heap_free(aac_mempoll);
    TRACE_A2DP_DECODER_I("[AAC] deinit MEM: total - %d, used - %d, max_used - %d.",
        total, used, max_used);

    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_mcu_decode_frame(uint8_t *buffer, uint32_t buffer_bytes)
{
    list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
    list_node_t *node = NULL;
    a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = NULL;

    UINT bufferSize = 0, bytesValid = 0;
    AAC_DECODER_ERROR decoder_err = AAC_DEC_OK;
    CStreamInfo *stream_info=NULL;

    bool cache_underflow = false;
    uint32_t aac_maxreadBytes = AAC_READBUF_SIZE;
    int output_byte = 0;

    if(buffer_bytes < DECODE_AAC_PCM_FRAME_LENGTH){
        TRACE_A2DP_DECODER_W("[MCU][AAC] pcm_len = %d \n", buffer_bytes);
        return A2DP_DECODER_NO_ERROR;
    }
    if(!aacDec_handle){
        TRACE_A2DP_DECODER_W("[MCU][AAC] aac_lc_decode not ready");
        return A2DP_DECODER_NO_ERROR;
    }

    node = a2dp_audio_list_begin(list);
    if (!node){
        TRACE_A2DP_DECODER_W("[MCU][AAC] cache underflow");
        cache_underflow = true;
        goto exit;
    }else{
        aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);

        if (aac_decoder_frame_p->aac_buffer_len < 64)
            aac_maxreadBytes = 64;
        else if (aac_decoder_frame_p->aac_buffer_len < 128)
            aac_maxreadBytes = 128;
        else if (aac_decoder_frame_p->aac_buffer_len < 256)
            aac_maxreadBytes = 256;
        else if (aac_decoder_frame_p->aac_buffer_len < 512)
            aac_maxreadBytes = 512;
        else if (aac_decoder_frame_p->aac_buffer_len < 1024)
            aac_maxreadBytes = 1024;

        bufferSize = aac_maxreadBytes;
        bytesValid = aac_maxreadBytes;
        decoder_err = aacDecoder_Fill(aacDec_handle, &(aac_decoder_frame_p->aac_buffer), &bufferSize, &bytesValid);
        if (decoder_err != AAC_DEC_OK) {
            TRACE_A2DP_DECODER_W("[MCU][AAC] aacDecoder_Fill failed:0x%x", decoder_err);
            //if aac failed reopen it again
            if(is_aacDecoder_Close(aacDec_handle)){
                a2dp_audio_aac_lc_decoder_reinit();
                TRACE_A2DP_DECODER_I("[MCU][AAC] aac_lc_decode reinin codec \n");
            }
            goto end_decode;
        }

        /* decode one AAC frame */
        decoder_err = aacDecoder_DecodeFrame(aacDec_handle, (short *)buffer, buffer_bytes/2, 0 /* flags */);
        TRACE_A2DP_DECODER_D("[MCU][AAC] decoder seq:%d len:%d err:%x", aac_decoder_frame_p->sequenceNumber,
                                                                aac_decoder_frame_p->aac_buffer_len,
                                                                decoder_err);
        if (decoder_err != AAC_DEC_OK){
            TRACE_A2DP_DECODER_W("[MCU][AAC]aac_lc_decode failed:0x%x", decoder_err);
            //if aac failed reopen it again
            if(is_aacDecoder_Close(aacDec_handle)){
                a2dp_audio_aac_lc_decoder_reinit();
                TRACE_A2DP_DECODER_I("[MCU][AAC]aac_lc_decode reinin codec \n");
            }
            goto end_decode;
        }

        stream_info = aacDecoder_GetStreamInfo(aacDec_handle);
        if (!stream_info || stream_info->sampleRate <= 0) {
            TRACE_A2DP_DECODER_W("[MCU][AAC]aac_lc_decode invalid stream info");
            goto end_decode;
        }

        output_byte = stream_info->frameSize * stream_info->numChannels * 2;//sizeof(pcm_buffer[0]);
        ASSERT_A2DP_DECODER(AAC_OUTPUT_FRAME_SAMPLES == output_byte/4, "aac_lc_decode output mismatch samples:%d", output_byte/4);
end_decode:
        a2dp_audio_aac_lastframe_info.sequenceNumber = aac_decoder_frame_p->sequenceNumber;
        a2dp_audio_aac_lastframe_info.timestamp = aac_decoder_frame_p->timestamp;
        a2dp_audio_aac_lastframe_info.curSubSequenceNumber = 0;
        a2dp_audio_aac_lastframe_info.totalSubSequenceNumber = 0;
        a2dp_audio_aac_lastframe_info.frame_samples = AAC_OUTPUT_FRAME_SAMPLES;
        a2dp_audio_aac_lastframe_info.decoded_frames++;
        a2dp_audio_aac_lastframe_info.undecode_frames = a2dp_audio_list_length(list)-1;
        a2dp_audio_aac_lastframe_info.check_sum= a2dp_audio_decoder_internal_check_sum_generate(aac_decoder_frame_p->aac_buffer, aac_decoder_frame_p->aac_buffer_len);
        a2dp_audio_decoder_internal_lastframe_info_set(&a2dp_audio_aac_lastframe_info);
        a2dp_audio_list_remove(list, aac_decoder_frame_p);
    }
exit:
    if(cache_underflow){
        a2dp_audio_aac_lastframe_info.undecode_frames = 0;
        a2dp_audio_aac_lastframe_info.check_sum = 0;
        a2dp_audio_decoder_internal_lastframe_info_set(&a2dp_audio_aac_lastframe_info);
        output_byte = A2DP_DECODER_CACHE_UNDERFLOW_ERROR;
    }
    return output_byte;
}

int a2dp_audio_aac_lc_decode_frame(uint8_t *buffer, uint32_t buffer_bytes)
{
#ifdef A2DP_CP_ACCEL
    return a2dp_cp_aac_lc_mcu_decode(buffer, buffer_bytes);
#else
    return a2dp_audio_aac_lc_mcu_decode_frame(buffer, buffer_bytes);
#endif
}

int a2dp_audio_aac_lc_preparse_packet(btif_media_header_t * header, uint8_t *buffer, uint32_t buffer_bytes)
{
    a2dp_audio_aac_lastframe_info.sequenceNumber = header->sequenceNumber;
    a2dp_audio_aac_lastframe_info.timestamp = header->timestamp;
    a2dp_audio_aac_lastframe_info.curSubSequenceNumber = 0;
    a2dp_audio_aac_lastframe_info.totalSubSequenceNumber = 0;
    a2dp_audio_aac_lastframe_info.frame_samples = AAC_OUTPUT_FRAME_SAMPLES;
    a2dp_audio_aac_lastframe_info.list_samples = AAC_OUTPUT_FRAME_SAMPLES;
    a2dp_audio_aac_lastframe_info.decoded_frames = 0;
    a2dp_audio_aac_lastframe_info.undecode_frames = 0;
    a2dp_audio_aac_lastframe_info.check_sum = 0;
    a2dp_audio_decoder_internal_lastframe_info_set(&a2dp_audio_aac_lastframe_info);

    TRACE_A2DP_DECODER_I("[AAC][PRE] seq:%d timestamp:%08x", header->sequenceNumber, header->timestamp);

    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_reorder_init(void)
{
    aac_decoder_frame_reorder_p = NULL;
    aac_decoder_last_valid_frame_ready = false;
    aac_decoder_last_valid_frame.sequenceNumber = 0;
    aac_decoder_last_valid_frame.timestamp = 0;
    aac_decoder_last_valid_frame.aac_buffer = NULL;
    aac_decoder_last_valid_frame.aac_buffer_len = 0;

    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_reorder_deinit(void)
{
    aac_decoder_frame_reorder_p = NULL;
    aac_decoder_last_valid_frame_ready = false;
    aac_decoder_last_valid_frame.sequenceNumber = 0;
    aac_decoder_last_valid_frame.timestamp = 0;
    aac_decoder_last_valid_frame.aac_buffer = NULL;
    aac_decoder_last_valid_frame.aac_buffer_len = 0;
    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_reorder_store_packet(a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p, 
                                                              btif_media_header_t * header, uint8_t *buffer, uint32_t buffer_bytes)
{
    aac_decoder_frame_p->sequenceNumber = header->sequenceNumber;
    aac_decoder_frame_p->timestamp = header->timestamp;
    memcpy(aac_decoder_frame_p->aac_buffer, buffer, buffer_bytes);
    aac_decoder_frame_p->aac_buffer_len = buffer_bytes;
    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_reorder_proc(a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p, 
                                                        btif_media_header_t * header, uint8_t *buffer, uint32_t buffer_bytes)
{
    uint8_t *dest_buf = NULL;
    if ((aac_decoder_frame_p->aac_buffer_len + buffer_bytes) > AAC_READBUF_SIZE){
        return A2DP_DECODER_NO_ERROR;
    }
    TRACE_A2DP_DECODER_W("[AAC][INPUT][REORDER] proc enter seq:%d len:%d", aac_decoder_frame_p->sequenceNumber, aac_decoder_frame_p->aac_buffer_len);
    dest_buf = &aac_decoder_frame_p->aac_buffer[aac_decoder_frame_p->aac_buffer_len];
    memcpy(dest_buf, buffer, buffer_bytes);
    aac_decoder_frame_p->aac_buffer_len += buffer_bytes;
    TRACE_A2DP_DECODER_W("[AAC][INPUT][REORDER] proc exit seq:%d len:%d", aac_decoder_frame_p->sequenceNumber, aac_decoder_frame_p->aac_buffer_len);

    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_packet_recover_save_last(a2dp_audio_aac_decoder_frame_t *aac_decoder_frame)
{
    aac_decoder_last_valid_frame_ready = true;
    aac_decoder_last_valid_frame.sequenceNumber = aac_decoder_frame->sequenceNumber;
    aac_decoder_last_valid_frame.timestamp = aac_decoder_frame->timestamp;
    return 0;
}

int a2dp_audio_aac_lc_packet_recover_find_missing(a2dp_audio_aac_decoder_frame_t *aac_decoder_frame)
{
    uint16_t diff_seq = 0;
    uint32_t diff_timestamp = 0;
    uint32_t diff = 0;
    float tmp_pkt_cnt = 0;
    uint32_t need_recover_pkt = 0;

    if (!aac_decoder_last_valid_frame_ready){
        return need_recover_pkt;
    }

    diff_seq = a2dp_audio_get_passed(aac_decoder_frame->sequenceNumber, aac_decoder_last_valid_frame.sequenceNumber, UINT16_MAX);
    diff_timestamp = a2dp_audio_get_passed(aac_decoder_frame->timestamp, aac_decoder_last_valid_frame.timestamp, UINT32_MAX);
    
    if (diff_seq > 1){
        TRACE_A2DP_DECODER_W("[AAC][INPUT][PLC] seq:%d/%d stmp:%d/%d", aac_decoder_frame->sequenceNumber, aac_decoder_last_valid_frame.sequenceNumber,
                                                                                  aac_decoder_frame->timestamp, aac_decoder_last_valid_frame.timestamp);
        diff = diff_timestamp/diff_seq;
        if (diff%AAC_OUTPUT_FRAME_SAMPLES == 0){
            tmp_pkt_cnt = diff_timestamp/AAC_OUTPUT_FRAME_SAMPLES;
        }else{
            tmp_pkt_cnt = (float)diff_timestamp/
            ((1000.f/(float)a2dp_audio_context_p->output_cfg.sample_rate)*(float)AAC_OUTPUT_FRAME_SAMPLES);
        }
        need_recover_pkt = (uint32_t)(tmp_pkt_cnt+0.5f);
        TRACE_A2DP_DECODER_W("[AAC][INPUT][PLC] diff_seq:%d diff_stmp:%d diff:%d missing:%d", diff_seq, diff_timestamp, diff, need_recover_pkt);
        if (need_recover_pkt == diff_seq){
            need_recover_pkt--;
            TRACE_A2DP_DECODER_W("[AAC][INPUT][PLC] need_recover_pkt seq:%d", need_recover_pkt);
        }else{
            need_recover_pkt = 0;
        }
    }
    return need_recover_pkt;
}

int a2dp_audio_aac_lc_packet_recover_proc(a2dp_audio_aac_decoder_frame_t *aac_decoder_frame)
{
    list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
    int missing_pkt_cnt = 0;
    missing_pkt_cnt = a2dp_audio_aac_lc_packet_recover_find_missing(aac_decoder_frame);
    if (missing_pkt_cnt <= 4 && a2dp_audio_list_length(list) + missing_pkt_cnt < aac_mtu_limiter){
        for (uint8_t i=0; i<missing_pkt_cnt; i++){
            a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_aac_lc_frame_malloc(aac_decoder_frame->aac_buffer_len);
            aac_decoder_frame_p->sequenceNumber = UINT16_MAX;
            aac_decoder_frame_p->timestamp = UINT32_MAX;
            memcpy(aac_decoder_frame_p->aac_buffer, aac_decoder_frame->aac_buffer, aac_decoder_frame->aac_buffer_len);
            aac_decoder_frame_p->aac_buffer_len = aac_decoder_frame->aac_buffer_len;
            a2dp_audio_list_append(list, aac_decoder_frame_p);
        }
    }

    return A2DP_DECODER_NO_ERROR;
}

int inline a2dp_audio_aac_lc_packet_append(a2dp_audio_aac_decoder_frame_t *aac_decoder_frame)
{
    list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
    a2dp_audio_aac_lc_packet_recover_proc(aac_decoder_frame);
    a2dp_audio_aac_lc_packet_recover_save_last(aac_decoder_frame);
    a2dp_audio_list_append(list, aac_decoder_frame);
    return 0;
}

#if 1
int a2dp_audio_aac_lc_store_packet(btif_media_header_t * header, uint8_t *buffer, uint32_t buffer_bytes)
{
    list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
    int nRet = A2DP_DECODER_NO_ERROR;
    a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = NULL;

    if (a2dp_audio_list_length(list) < aac_mtu_limiter &&
        buffer_bytes <= AAC_READBUF_SIZE){
        if (aac_decoder_frame_reorder_p == NULL){
            aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_aac_lc_frame_malloc(buffer_bytes);
            aac_decoder_frame_reorder_p = aac_decoder_frame_p;
            TRACE_A2DP_DECODER_W("[AAC][INPUT][REORDER] start seq:%d len:%d", header->sequenceNumber, buffer_bytes);
            a2dp_audio_aac_lc_reorder_store_packet(aac_decoder_frame_p, header, buffer, buffer_bytes);
        }else{
            if (aac_decoder_frame_reorder_p->aac_buffer[0] == buffer[0] &&
                aac_decoder_frame_reorder_p->aac_buffer[1] == buffer[1]){
                a2dp_audio_aac_lc_packet_append(aac_decoder_frame_reorder_p);
                aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_aac_lc_frame_malloc(buffer_bytes);
                aac_decoder_frame_reorder_p = aac_decoder_frame_p;
                a2dp_audio_aac_lc_reorder_store_packet(aac_decoder_frame_p, header, buffer, buffer_bytes);
            }else{
                aac_decoder_frame_p = aac_decoder_frame_reorder_p;
                a2dp_audio_aac_lc_reorder_proc(aac_decoder_frame_p, header, buffer, buffer_bytes);
                a2dp_audio_aac_lc_packet_append(aac_decoder_frame_p);
                aac_decoder_frame_reorder_p = NULL;
            }
        }
        nRet = A2DP_DECODER_NO_ERROR;
    }else{
        TRACE_A2DP_DECODER_W("[AAC][INPUT] list full current list_len:%d buff_len:%d", a2dp_audio_list_length(list), buffer_bytes);
        nRet = A2DP_DECODER_MTU_LIMTER_ERROR;
    }

    return nRet;
}
#else
int a2dp_audio_aac_lc_store_packet(btif_media_header_t * header, uint8_t *buffer, uint32_t buffer_bytes)
{
    list_t *list = a2dp_audio_context_p->audio_datapath.input_raw_packet_list;
    int nRet = A2DP_DECODER_NO_ERROR;

    if (!a2dp_audio_aac_lc_reorder_valid(header, buffer, buffer_bytes)){
        return A2DP_DECODER_NO_ERROR;
    }

    if (a2dp_audio_list_length(list) < aac_mtu_limiter &&
        buffer_bytes <= AAC_READBUF_SIZE){
        a2dp_audio_aac_decoder_frame_t *aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_aac_lc_frame_malloc(buffer_bytes);
        TRACE_A2DP_DECODER_D("[AAC][INPUT]seq:%d len:%d", header->sequenceNumber, buffer_bytes);
        aac_decoder_frame_p->sequenceNumber = header->sequenceNumber;
        aac_decoder_frame_p->timestamp = header->timestamp;
        memcpy(aac_decoder_frame_p->aac_buffer, buffer, buffer_bytes);
        aac_decoder_frame_p->aac_buffer_len = buffer_bytes;
        a2dp_audio_aac_lc_reorder_history(aac_decoder_frame_p);
        a2dp_audio_list_append(list, aac_decoder_frame_p);
        nRet = A2DP_DECODER_NO_ERROR;
    }else{
        TRACE_A2DP_DECODER_I("[AAC][INPUT] list full current list_len:%d buff_len:%d", a2dp_audio_list_length(list), buffer_bytes);
        nRet = A2DP_DECODER_MTU_LIMTER_ERROR;
    }

    return nRet;
}
#endif

int a2dp_audio_aac_lc_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_aac_decoder_frame_t *aac_decoder_frame_p = NULL;

#ifdef A2DP_CP_ACCEL
    a2dp_cp_reset_frame();
#endif

    if (packets <= a2dp_audio_list_length(list)){
        for (uint8_t i=0; i<packets; i++){
            if ((node = a2dp_audio_list_begin(list)) != NULL){
                aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
                a2dp_audio_list_remove(list, aac_decoder_frame_p);
            }
        }
        nRet = A2DP_DECODER_NO_ERROR;
    }

    TRACE_A2DP_DECODER_I("[AAC][DISCARDS] packets:%d nRet:%d", packets, nRet);
    return nRet;
}

int a2dp_audio_aac_lc_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_aac_decoder_frame_t *aac_decoder_frame = NULL;

    if (a2dp_audio_list_length(list) && ((node = a2dp_audio_list_begin(list)) != NULL)){
        aac_decoder_frame = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
        headframe_info->sequenceNumber = aac_decoder_frame->sequenceNumber;
        headframe_info->timestamp = aac_decoder_frame->timestamp;
        headframe_info->curSubSequenceNumber = 0;
        headframe_info->totalSubSequenceNumber = 0;
    }else{
        memset(headframe_info, 0, sizeof(A2DP_AUDIO_HEADFRAME_INFO_T));
    }

    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_info_get(void *info)
{
    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_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_aac_decoder_frame_t *aac_decoder_frame_p = 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){
            aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
            TRACE_A2DP_DECODER_D("[synchronize_packet]%d/%d %x/%x", aac_decoder_frame_p->sequenceNumber, sync_info->sequenceNumber,
                                  aac_decoder_frame_p->timestamp, sync_info->timestamp);
            if (A2DP_AUDIO_SYNCFRAME_CHK(aac_decoder_frame_p->sequenceNumber  == sync_info->sequenceNumber, A2DP_AUDIO_SYNCFRAME_MASK_SEQ,       mask)&&
                A2DP_AUDIO_SYNCFRAME_CHK(aac_decoder_frame_p->timestamp       == sync_info->timestamp,      A2DP_AUDIO_SYNCFRAME_MASK_TIMESTAMP, mask)){
                nRet = A2DP_DECODER_NO_ERROR;
                break;
            }
            a2dp_audio_list_remove(list, aac_decoder_frame_p);
        }
    }

    node = a2dp_audio_list_begin(list);
    if (node){
        aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
        TRACE_A2DP_DECODER_I("[MCU][SYNC][AAC] sync pkt nRet:%d SEQ:%d timestamp:%d", nRet, aac_decoder_frame_p->sequenceNumber, aac_decoder_frame_p->timestamp);
    }else{
        TRACE_A2DP_DECODER_I("[MCU][SYNC][AAC] sync pkt nRet:%d",  nRet);
    }

    return nRet;
}

int a2dp_audio_aac_lc_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_aac_decoder_frame_t *aac_decoder_frame_p = NULL;

    list_len = a2dp_audio_list_length(list);
    if (list_len > packet_mut){
        do{
            node = a2dp_audio_list_begin(list);
            if (node){
                aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
                a2dp_audio_list_remove(list, aac_decoder_frame_p);
            }
        }while(a2dp_audio_list_length(list) > packet_mut);
    }

    if (packet_mut == 0){
        if (aac_decoder_frame_reorder_p){
            a2dp_audio_aac_lc_free(aac_decoder_frame_reorder_p);
            a2dp_audio_aac_lc_reorder_init();
        }
    }

    TRACE_A2DP_DECODER_I("[MCU][SYNC][AAC] dest pkt list:%d", a2dp_audio_list_length(list));
    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_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 = AAC_OUTPUT_FRAME_SAMPLES*list_len;

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

    return A2DP_DECODER_NO_ERROR;
}

int a2dp_audio_aac_lc_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_aac_decoder_frame_t *aac_decoder_frame_p = NULL;
    list_node_t *node = NULL;
    int need_remove_list = 0;
    uint32_t list_samples = 0;
    ASSERT_A2DP_DECODER(!(samples%AAC_OUTPUT_FRAME_SAMPLES), "%s samples err:%d", __func__, samples);

    a2dp_audio_aac_lc_convert_list_to_samples(&list_samples);
    if (list_samples >= samples){
        need_remove_list = samples/AAC_OUTPUT_FRAME_SAMPLES;
        for (int i=0; i<need_remove_list; i++){
            node = a2dp_audio_list_begin(list);
            if (node){
                aac_decoder_frame_p = (a2dp_audio_aac_decoder_frame_t *)a2dp_audio_list_node(node);
                a2dp_audio_list_remove(list, aac_decoder_frame_p);
            }
        }
        nRet = A2DP_DECODER_NO_ERROR;
    }

    return nRet;
}

A2DP_AUDIO_DECODER_T a2dp_audio_aac_lc_decoder_config = {
                                                        {44100, 2, 16},
                                                        1,
                                                        a2dp_audio_aac_lc_init,
                                                        a2dp_audio_aac_lc_deinit,
                                                        a2dp_audio_aac_lc_decode_frame,
                                                        a2dp_audio_aac_lc_preparse_packet,
                                                        a2dp_audio_aac_lc_store_packet,
                                                        a2dp_audio_aac_lc_discards_packet,
                                                        a2dp_audio_aac_lc_synchronize_packet,
                                                        a2dp_audio_aac_lc_synchronize_dest_packet_mut,
                                                        a2dp_audio_aac_lc_convert_list_to_samples,
                                                        a2dp_audio_aac_lc_discards_samples,
                                                        a2dp_audio_aac_lc_headframe_info_get,
                                                        a2dp_audio_aac_lc_info_get,
                                                        a2dp_audio_aac_lc_free,
                                                        a2dp_audio_aac_lc_channel_select,
                                                     } ;
#else
A2DP_AUDIO_DECODER_T a2dp_audio_aac_lc_decoder_config = {0,} ;
#endif