static av_cold int fdk_aac_decode_init(AVCodecContext *avctx) { FDKAACDecContext *s = avctx->priv_data; AAC_DECODER_ERROR err; int ret; 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"); ret = AVERROR(ENOMEM); goto fail; } 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"); ret = AVERROR_UNKNOWN; goto fail; } } } } 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) { ret = AVERROR(ENOMEM); goto fail; } return 0; fail: fdk_aac_decode_close(avctx); return ret; }