static av_cold int Faac_encode_init(AVCodecContext *avctx) { FaacAudioContext *s = avctx->priv_data; faacEncConfigurationPtr faac_cfg; unsigned long samples_input, max_bytes_output; /* number of channels */ if (avctx->channels < 1 || avctx->channels > 6) return -1; s->faac_handle = faacEncOpen(avctx->sample_rate, avctx->channels, &samples_input, &max_bytes_output); /* check faac version */ faac_cfg = faacEncGetCurrentConfiguration(s->faac_handle); if (faac_cfg->version != FAAC_CFG_VERSION) { av_log(avctx, AV_LOG_ERROR, "wrong libfaac version (compiled for: %d, using %d)\n", FAAC_CFG_VERSION, faac_cfg->version); faacEncClose(s->faac_handle); return -1; } /* put the options in the configuration struct */ switch(avctx->profile) { case FF_PROFILE_AAC_MAIN: faac_cfg->aacObjectType = MAIN; break; case FF_PROFILE_UNKNOWN: case FF_PROFILE_AAC_LOW: faac_cfg->aacObjectType = LOW; break; case FF_PROFILE_AAC_SSR: faac_cfg->aacObjectType = SSR; break; case FF_PROFILE_AAC_LTP: faac_cfg->aacObjectType = LTP; break; default: av_log(avctx, AV_LOG_ERROR, "invalid AAC profile\n"); faacEncClose(s->faac_handle); return -1; } faac_cfg->mpegVersion = MPEG4; faac_cfg->useTns = 0; faac_cfg->allowMidside = 1; faac_cfg->bitRate = avctx->bit_rate / avctx->channels; faac_cfg->bandWidth = avctx->cutoff; if(avctx->flags & CODEC_FLAG_QSCALE) { faac_cfg->bitRate = 0; faac_cfg->quantqual = avctx->global_quality / FF_QP2LAMBDA; } faac_cfg->outputFormat = 1; faac_cfg->inputFormat = FAAC_INPUT_16BIT; avctx->frame_size = samples_input / avctx->channels; avctx->coded_frame= avcodec_alloc_frame(); avctx->coded_frame->key_frame= 1; /* Set decoder specific info */ avctx->extradata_size = 0; if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { unsigned char *buffer = NULL; unsigned long decoder_specific_info_size; if (!faacEncGetDecoderSpecificInfo(s->faac_handle, &buffer, &decoder_specific_info_size)) { avctx->extradata = av_malloc(decoder_specific_info_size + FF_INPUT_BUFFER_PADDING_SIZE); avctx->extradata_size = decoder_specific_info_size; memcpy(avctx->extradata, buffer, avctx->extradata_size); faac_cfg->outputFormat = 0; } #undef free free(buffer); #define free please_use_av_free } if (!faacEncSetConfiguration(s->faac_handle, faac_cfg)) { av_log(avctx, AV_LOG_ERROR, "libfaac doesn't support this output format!\n"); return -1; } return 0; }
static av_cold int Faac_encode_init(AVCodecContext *avctx) { FaacAudioContext *s = avctx->priv_data; faacEncConfigurationPtr faac_cfg; unsigned long samples_input, max_bytes_output;   if (avctx->channels < 1 || avctx->channels > 6) return -1; s->faac_handle = faacEncOpen(avctx->sample_rate, avctx->channels, &samples_input, &max_bytes_output);   faac_cfg = faacEncGetCurrentConfiguration(s->faac_handle); if (faac_cfg->version != FAAC_CFG_VERSION) { av_log(avctx, AV_LOG_ERROR, "wrong libfaac version (compiled for: %d, using %d)\n", FAAC_CFG_VERSION, faac_cfg->version); faacEncClose(s->faac_handle); return -1; }   switch(avctx->profile) { case FF_PROFILE_AAC_MAIN: faac_cfg->aacObjectType = MAIN; break; case FF_PROFILE_UNKNOWN: case FF_PROFILE_AAC_LOW: faac_cfg->aacObjectType = LOW; break; case FF_PROFILE_AAC_SSR: faac_cfg->aacObjectType = SSR; break; case FF_PROFILE_AAC_LTP: faac_cfg->aacObjectType = LTP; break; default: av_log(avctx, AV_LOG_ERROR, "invalid AAC profile\n"); faacEncClose(s->faac_handle); return -1; } faac_cfg->mpegVersion = MPEG4; faac_cfg->useTns = 0; faac_cfg->allowMidside = 1; faac_cfg->bitRate = avctx->bit_rate / avctx->channels; faac_cfg->bandWidth = avctx->cutoff; if(avctx->flags & CODEC_FLAG_QSCALE) { faac_cfg->bitRate = 0; faac_cfg->quantqual = avctx->global_quality / FF_QP2LAMBDA; } faac_cfg->outputFormat = 1; faac_cfg->inputFormat = FAAC_INPUT_16BIT; avctx->frame_size = samples_input / avctx->channels; avctx->coded_frame= avcodec_alloc_frame(); avctx->coded_frame->key_frame= 1;   avctx->extradata_size = 0; if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { unsigned char *buffer = NULL; unsigned long decoder_specific_info_size; if (!faacEncGetDecoderSpecificInfo(s->faac_handle, &buffer, &decoder_specific_info_size)) { avctx->extradata = av_malloc(decoder_specific_info_size + FF_INPUT_BUFFER_PADDING_SIZE); avctx->extradata_size = decoder_specific_info_size; memcpy(avctx->extradata, buffer, avctx->extradata_size); faac_cfg->outputFormat = 0; } #undef free free(buffer); #define free please_use_av_free } if (!faacEncSetConfiguration(s->faac_handle, faac_cfg)) { av_log(avctx, AV_LOG_ERROR, "libfaac doesn't support this output format!\n"); return -1; } return 0; }