Method OpenFile

src/core/audiosource.cpp:495–524

}

void FFMS_AudioSource::OpenFile() {
    avcodec_free_context(&CodecContext);
    avformat_close_input(&FormatContext);

    LAVFOpenFile(SourceFile.c_str(), FormatContext, TrackNumber, LAVFOpts);

    auto *Codec = avcodec_find_decoder(FormatContext->streams[TrackNumber]->codecpar->codec_id);
    if (Codec == nullptr)
        throw FFMS_Exception(FFMS_ERROR_DECODING, FFMS_ERROR_CODEC,
            "Audio codec not found");

    CodecContext = avcodec_alloc_context3(Codec);
    if (CodecContext == nullptr)
        throw FFMS_Exception(FFMS_ERROR_DECODING, FFMS_ERROR_ALLOCATION_FAILED,
            "Could not allocate audio decoding context");

    if (avcodec_parameters_to_context(CodecContext, FormatContext->streams[TrackNumber]->codecpar) < 0)
        throw FFMS_Exception(FFMS_ERROR_DECODING, FFMS_ERROR_CODEC,
            "Could not copy audio codec parameters");

    AVDictionary *CodecDict = nullptr;
    if (Codec->id == AV_CODEC_ID_AC3 || Codec->id == AV_CODEC_ID_EAC3)
        av_dict_set(&CodecDict, "drc_scale", std::to_string(DrcScale).c_str(), 0);

    if (avcodec_open2(CodecContext, Codec, &CodecDict) < 0)
        throw FFMS_Exception(FFMS_ERROR_DECODING, FFMS_ERROR_CODEC,
            "Could not open audio codec");

    av_dict_free(&CodecDict);
}

void FFMS_AudioSource::Free() {
    av_frame_free(&DecodeFrame);