static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
{
FDKAACDecContext *s = avctx->priv_data;
AAC_DECODER_ERROR err;
s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
if (!s->handle) {
av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
return AVERROR_UNKNOWN;
}
if (avctx->extradata_size) {
if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata,
&avctx->extradata_size)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n");
return AVERROR_INVALIDDATA;
}
}
if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
s->conceal_method)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
return AVERROR_UNKNOWN;
}
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
return 0;
}
static av_cold int aac_decode_init(AVCodecContext *avctx)
{
AACContext *s = avctx->priv_data;
AAC_DECODER_ERROR err;
int ret = AVERROR(EINVAL);
s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
if (avctx->extradata_size) {
if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata, &avctx->extradata_size)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_WARNING, "Unable to set extradata\n");
goto error;
}
}
avcodec_get_frame_defaults(&s->frame);
avctx->coded_frame = &s->frame;
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
return 0;
error:
return ret;
}
static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
{
FDKAACDecContext *s = avctx->priv_data;
AAC_DECODER_ERROR err;
s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
if (!s->handle) {
av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
return AVERROR_UNKNOWN;
}
if (avctx->extradata_size) {
if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata,
&avctx->extradata_size)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n");
return AVERROR_INVALIDDATA;
}
}
if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
s->conceal_method)) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
return AVERROR_UNKNOWN;
}
if (avctx->request_channel_layout > 0 &&
avctx->request_channel_layout != AV_CH_LAYOUT_NATIVE) {
int downmix_channels = -1;
switch (avctx->request_channel_layout) {
case AV_CH_LAYOUT_STEREO:
case AV_CH_LAYOUT_STEREO_DOWNMIX:
downmix_channels = 2;
break;
case AV_CH_LAYOUT_MONO:
downmix_channels = 1;
break;
default:
av_log(avctx, AV_LOG_WARNING, "Invalid request_channel_layout\n");
break;
}
if (downmix_channels != -1) {
if (aacDecoder_SetParam(s->handle, AAC_PCM_MAX_OUTPUT_CHANNELS,
downmix_channels) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_WARNING, "Unable to set output channels in the decoder\n");
} else {
s->anc_buffer = av_malloc(DMX_ANC_BUFFSIZE);
if (!s->anc_buffer) {
av_log(avctx, AV_LOG_ERROR, "Unable to allocate ancillary buffer for the decoder\n");
return AVERROR(ENOMEM);
}
if (aacDecoder_AncDataInit(s->handle, s->anc_buffer, DMX_ANC_BUFFSIZE)) {
av_log(avctx, AV_LOG_ERROR, "Unable to register downmix ancillary buffer in the decoder\n");
return AVERROR_UNKNOWN;
}
}
}
}
if (s->drc_boost != -1) {
if (aacDecoder_SetParam(s->handle, AAC_DRC_BOOST_FACTOR, s->drc_boost) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set DRC boost factor in the decoder\n");
return AVERROR_UNKNOWN;
}
}
if (s->drc_cut != -1) {
if (aacDecoder_SetParam(s->handle, AAC_DRC_ATTENUATION_FACTOR, s->drc_cut) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set DRC attenuation factor in the decoder\n");
return AVERROR_UNKNOWN;
}
}
if (s->drc_level != -1) {
if (aacDecoder_SetParam(s->handle, AAC_DRC_REFERENCE_LEVEL, s->drc_level) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set DRC reference level in the decoder\n");
return AVERROR_UNKNOWN;
}
}
if (s->drc_heavy != -1) {
if (aacDecoder_SetParam(s->handle, AAC_DRC_HEAVY_COMPRESSION, s->drc_heavy) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set DRC heavy compression in the decoder\n");
return AVERROR_UNKNOWN;
}
}
#ifdef AACDECODER_LIB_VL0
if (aacDecoder_SetParam(s->handle, AAC_PCM_LIMITER_ENABLE, s->level_limit) != AAC_DEC_OK) {
av_log(avctx, AV_LOG_ERROR, "Unable to set in signal level limiting in the decoder\n");
return AVERROR_UNKNOWN;
}
#endif
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
s->decoder_buffer_size = DECODER_BUFFSIZE * DECODER_MAX_CHANNELS;
s->decoder_buffer = av_malloc(s->decoder_buffer_size);
if (!s->decoder_buffer)
return AVERROR(ENOMEM);
return 0;
}
int main(int argc, char *argv[]) {
const char *infile, *outfile;
AVFormatContext *in = NULL;
AVStream *st = NULL;
void *wav = NULL;
int output_size, ret, i;
uint8_t *output_buf;
int16_t *decode_buf;
HANDLE_AACDECODER handle;
AAC_DECODER_ERROR err;
int frame_size = 0;
if (argc < 3) {
fprintf(stderr, "%s in.m4a out.wav\n", argv[0]);
return 1;
}
infile = argv[1];
outfile = argv[2];
av_register_all();
avformat_network_init();
ret = avformat_open_input(&in, infile, NULL, NULL);
if (ret < 0) {
char buf[100];
av_strerror(ret, buf, sizeof(buf));
fprintf(stderr, "%s: %s\n", infile, buf);
return 1;
}
for (i = 0; i < in->nb_streams && !st; i++) {
if (in->streams[i]->codec->codec_id == AV_CODEC_ID_AAC)
st = in->streams[i];
}
if (!st) {
fprintf(stderr, "No AAC stream found\n");
return 1;
}
if (!st->codec->extradata_size) {
fprintf(stderr, "No AAC ASC found\n");
return 1;
}
handle = aacDecoder_Open(TT_MP4_RAW, 1);
err = aacDecoder_ConfigRaw(handle, &st->codec->extradata, &st->codec->extradata_size);
if (err != AAC_DEC_OK) {
fprintf(stderr, "Unable to decode the ASC\n");
return 1;
}
output_size = 8*2*1024;
output_buf = (uint8_t*) malloc(output_size);
decode_buf = (int16_t*) malloc(output_size);
while (1) {
int i;
UINT valid;
AVPacket pkt = { 0 };
int ret = av_read_frame(in, &pkt);
if (ret < 0) {
if (ret == AVERROR(EAGAIN))
continue;
break;
}
if (pkt.stream_index != st->index) {
av_free_packet(&pkt);
continue;
}
valid = pkt.size;
err = aacDecoder_Fill(handle, &pkt.data, &pkt.size, &valid);
if (err != AAC_DEC_OK) {
fprintf(stderr, "Fill failed: %x\n", err);
break;
}
err = aacDecoder_DecodeFrame(handle, decode_buf, output_size, 0);
av_free_packet(&pkt);
if (err == AAC_DEC_NOT_ENOUGH_BITS)
continue;
if (err != AAC_DEC_OK) {
fprintf(stderr, "Decode failed: %x\n", err);
continue;
}
if (!wav) {
CStreamInfo *info = aacDecoder_GetStreamInfo(handle);
if (!info || info->sampleRate <= 0) {
fprintf(stderr, "No stream info\n");
break;
}
frame_size = info->frameSize * info->numChannels;
// Note, this probably doesn't return channels > 2 in the right order for wav
wav = wav_write_open(outfile, info->sampleRate, 16, info->numChannels);
if (!wav) {
perror(outfile);
break;
}
}
for (i = 0; i < frame_size; i++) {
uint8_t* out = &output_buf[2*i];
out[0] = decode_buf[i] & 0xff;
out[1] = decode_buf[i] >> 8;
}
wav_write_data(wav, output_buf, 2*frame_size);
}
free(output_buf);
free(decode_buf);
avformat_close_input(&in);
if (wav)
wav_write_close(wav);
aacDecoder_Close(handle);
return 0;
}