public long GetVideoFrame()
{
int ret;
long firstTs = -1;
while (interrupt != 1)
{
AVPacket *pkt = av_packet_alloc();
ret = av_read_frame(demuxer.fmtCtx, pkt);
if (ret != 0)
{
return(-1);
}
if (!demuxer.enabledStreams.Contains(pkt->stream_index))
{
av_packet_free(&pkt);
continue;
}
switch (demuxer.fmtCtx->streams[pkt->stream_index]->codecpar->codec_type)
{
case AVMEDIA_TYPE_AUDIO:
aDecoder.packets.Enqueue((IntPtr)pkt);
break;
case AVMEDIA_TYPE_VIDEO:
lock (device)
ret = avcodec_send_packet(vDecoder.codecCtx, pkt);
av_packet_free(&pkt);
if (ret != 0)
{
return(-1);
}
while (interrupt != 1)
{
AVFrame *frame = av_frame_alloc();
lock (device)
ret = avcodec_receive_frame(vDecoder.codecCtx, frame);
if (ret == 0)
{
MediaFrame mFrame = new MediaFrame();
mFrame.pts = frame->best_effort_timestamp == AV_NOPTS_VALUE ? frame->pts : frame->best_effort_timestamp;
mFrame.timestamp = ((long)(mFrame.pts * vDecoder.info.Timebase) - demuxer.streams[vDecoder.st->index].StartTime) + opt.audio.LatencyTicks;
if (mFrame.pts == AV_NOPTS_VALUE)
{
av_frame_free(&frame);
continue;
}
if (firstTs == -1)
{
if (vDecoder.hwAccelSuccess && frame->hw_frames_ctx == null)
{
vDecoder.hwAccelSuccess = false;
}
firstTs = mFrame.timestamp;
}
if (MediaFrame.ProcessVideoFrame(vDecoder, mFrame, frame) != 0)
{
mFrame = null;
}
if (mFrame != null)
{
vDecoder.frames.Enqueue(mFrame);
}
//Log(Utils.TicksToTime((long)(mFrame.pts * avs.streams[video.st->index].timebase)));
av_frame_free(&frame);
continue;
}
av_frame_free(&frame);
break;
}
break;
case AVMEDIA_TYPE_SUBTITLE:
sDecoder.packets.Enqueue((IntPtr)pkt);
break;
default:
av_packet_free(&pkt);
break;
}
if (firstTs != -1)
{
break;
}
}
return(firstTs);
}
public void Decode()
{
//int xf = 0;
AVPacket *pkt;
while (true)
{
if (status != Status.END)
{
status = Status.READY;
}
decodeARE.Reset();
decodeARE.WaitOne();
status = Status.PLAY;
forcePause = false;
bool shouldStop = false;
int allowedErrors = decCtx.opt.demuxer.MaxErrors;
int ret = -1;
Log("Started");
// Wait for demuxer to come up
if (demuxer.status == Status.READY)
{
demuxer.demuxARE.Set();
while (!demuxer.isPlaying && demuxer.status != Status.END)
{
Thread.Sleep(1);
}
}
while (true)
{
// No Packets || Max Frames Brakes
if (packets.Count == 0 ||
(type == Type.Audio && frames.Count > decCtx.opt.audio.MaxDecodedFrames) ||
(type == Type.Video && frames.Count > decCtx.opt.video.MaxDecodedFrames) ||
(type == Type.Subs && frames.Count > decCtx.opt.subs.MaxDecodedFrames))
{
shouldStop = false;
//isWaiting = true;
do
{
if (!decCtx.isPlaying || forcePause) // Proper Pause
{
Log("Pausing"); shouldStop = true; break;
}
else if (packets.Count == 0 && demuxer.status == Status.END) // Drain
{
Log("Draining"); break;
}
//else if (packets.Count == 0 && (!demuxer.isPlaying || demuxer.isWaiting)) // No reason to run
else if (packets.Count == 0 && (!demuxer.isPlaying || ((!isEmbedded || type == Type.Video) && demuxer.isWaiting))) // No reason to run
{
Log("Exhausted " + isPlaying); shouldStop = true; break;
}
Thread.Sleep(10);
} while (packets.Count == 0 ||
(type == Type.Audio && frames.Count > decCtx.opt.audio.MaxDecodedFrames) ||
(type == Type.Video && frames.Count > decCtx.opt.video.MaxDecodedFrames) ||
(type == Type.Subs && frames.Count > decCtx.opt.subs.MaxDecodedFrames));
//isWaiting = false;
if (shouldStop)
{
break;
}
}
if (packets.Count == 0 && demuxer.status == Status.END)
{
if (type == Type.Video)
{
// Check case pause while draining
Log("Draining...");
pkt = null;
}
else
{
status = Status.END;
Log("EOF");
break;
}
}
else
{
packets.TryDequeue(out IntPtr pktPtr);
pkt = (AVPacket *)pktPtr;
if (type == Type.Subs)
{
MediaFrame mFrame = new MediaFrame();
mFrame.pts = pkt->pts;
mFrame.timestamp = (long)((mFrame.pts * info.Timebase)) + opt.audio.LatencyTicks + opt.subs.DelayTicks;
//Log(Utils.TicksToTime((long)(mFrame.pts * demuxer.streams[st->index].timebase)) + " | pts -> " + mFrame.pts);
//xf++;
if (mFrame.pts == AV_NOPTS_VALUE)
{
av_packet_free(&pkt);
continue;
}
int gotFrame = 0;
AVSubtitle sub = new AVSubtitle();
// drain mode todo
// pkt->data set to NULL && pkt->size = 0 until it stops returning subtitles
ret = avcodec_decode_subtitle2(codecCtx, &sub, &gotFrame, pkt);
if (ret < 0)
{
allowedErrors--;
Log($"[ERROR-2] {Utils.ErrorCodeToMsg(ret)} ({ret})");
if (allowedErrors == 0)
{
Log("[ERROR-0] Too many errors!");
break;
}
continue;
}
if (gotFrame < 1 || sub.num_rects < 1)
{
continue;
}
MediaFrame.ProcessSubsFrame(this, mFrame, &sub);
frames.Enqueue(mFrame);
avsubtitle_free(&sub);
av_packet_free(&pkt);
continue;
}
}
lock (demuxer.decCtx.device)
ret = avcodec_send_packet(codecCtx, pkt);
if (ret != 0 && ret != AVERROR(EAGAIN))
{
if (ret == AVERROR_EOF)
{
status = Status.END;
Log("EOF");
break;
}
else
//if (ret == AVERROR_INVALIDDATA) // We also get Error number -16976906 occurred
{
allowedErrors--;
Log($"[ERROR-2] {Utils.ErrorCodeToMsg(ret)} ({ret})");
if (allowedErrors == 0)
{
Log("[ERROR-0] Too many errors!");
break;
}
continue;
}
}
av_packet_free(&pkt);
while (true)
{
lock (demuxer.decCtx.device)
ret = avcodec_receive_frame(codecCtx, frame);
if (ret == 0)
{
MediaFrame mFrame = new MediaFrame();
mFrame.pts = frame->best_effort_timestamp == AV_NOPTS_VALUE ? frame->pts : frame->best_effort_timestamp;
if (mFrame.pts == AV_NOPTS_VALUE)
{
av_frame_unref(frame);
continue;
}
//Log(Utils.TicksToTime((long)(mFrame.pts * demuxer.streams[st->index].Timebase)) + " | pts -> " + mFrame.pts);
if (type == Type.Video)
{
if (hwAccelSuccess && frame->hw_frames_ctx == null)
{
hwAccelSuccess = false;
}
mFrame.timestamp = ((long)(mFrame.pts * info.Timebase) - demuxer.streams[st->index].StartTime) + opt.audio.LatencyTicks;
if (MediaFrame.ProcessVideoFrame(this, mFrame, frame) != 0)
{
mFrame = null;
}
}
else // Audio
{
mFrame.timestamp = ((long)(mFrame.pts * info.Timebase) - demuxer.streams[st->index].StartTime) + opt.audio.DelayTicks + (demuxer.streams[st->index].StartTime - demuxer.decCtx.vDecoder.info.StartTime);
if (MediaFrame.ProcessAudioFrame(this, mFrame, frame) < 0)
{
mFrame = null;
}
}
if (mFrame != null)
{
frames.Enqueue(mFrame);
//xf++;
}
av_frame_unref(frame);
continue;
}
av_frame_unref(frame);
break;
}
if (ret == AVERROR_EOF)
{
status = Status.END;
Log("EOF");
if (type == Type.Video && decCtx.aDecoder.status != Status.PLAY)
{
Log("EOF All"); decCtx.status = Status.END;
}
else if (type == Type.Audio && decCtx.vDecoder.status != Status.PLAY)
{
Log("EOF All"); decCtx.status = Status.END;
}
break;
}
if (ret != AVERROR(EAGAIN))
{
Log($"[ERROR-3] {Utils.ErrorCodeToMsg(ret)} ({ret})"); break;
}
}
Log($"Done {(allowedErrors == decCtx.opt.demuxer.MaxErrors ? "" : $"[Errors: {decCtx.opt.demuxer.MaxErrors - allowedErrors}]")}");
}
}