Method ReadFromFifoAndWriteToBuffer

src/plugins/ffmpegdecoder/FfmpegDecoder.cpp:616–643

}

bool FfmpegDecoder::ReadFromFifoAndWriteToBuffer(IBuffer* buffer) {
    int error = 0;
    int fifoSize = av_audio_fifo_size(this->outputFifo);

    if (this->eof && fifoSize == 0) {
        return false;
    }

    if (
        fifoSize >= this->preferredFrameSize ||
        (this->eof && fifoSize > 0)
    ) {
        const int expectedFrameSize = FFMIN(fifoSize, this->preferredFrameSize);
        buffer->SetSamples(expectedFrameSize * this->channels);
        void* outData = (void*)buffer->BufferPointer();
        int actualFrameSize = av_audio_fifo_read(this->outputFifo, &outData, expectedFrameSize);

        if (actualFrameSize > expectedFrameSize) {
            logError("av_audio_fifo_read read the incorrect number of samples");
            return false;
        }
        else if (actualFrameSize != expectedFrameSize) {
            buffer->SetSamples(actualFrameSize * this->channels);
        }
    }

    return true;
}

void FfmpegDecoder::FlushAndFinalizeDecoder() {
    /* reading from a packet with a null `data` pointer is a "flush" operation,