Method DecodePacket

src/core/videosource.cpp:672–699

}

bool FFMS_VideoSource::DecodePacket(AVPacket *Packet) {
    std::swap(DecodeFrame, LastDecodedFrame);
    ResendPacket = false;

    int PacketNum = Frames.FrameFromPTS(Frames.UseDTS ? Packet->dts : Packet->pts, true);
    bool PacketHidden = !!(Packet->flags & AV_PKT_FLAG_DISCARD) || (PacketNum != -1 && Frames[PacketNum].MarkedHidden);
    bool SecondField = PacketNum != -1 && Frames[PacketNum].SecondField;

    int Ret = avcodec_send_packet(CodecContext, Packet);
    if (Ret == AVERROR(EAGAIN)) {
        // Send queue is full, so stash packet to resend on the next call.
        ResendPacket = true;
    } else if (Ret == 0) {
        Delay.Increment(PacketHidden, SecondField);
    }

    Ret = avcodec_receive_frame(CodecContext, DecodeFrame);
    if (Ret == 0) {
        Delay.Decrement();
    } else {
        std::swap(DecodeFrame, LastDecodedFrame);
    }

    if (Ret == 0 && Stage == DecodeStage::INITIALIZE)
        Stage = DecodeStage::APPLY_DELAY;

    return Ret == 0;
}

int FFMS_VideoSource::Seek(int n) {
    int ret = -1;