internal void Prepare(byte[] source, int offset, int encodedlength, ushort stride, ushort height, ushort width, byte[] destination, int destinationoffset, int returnint, FrameControlFlags flags, Action <FrameTask, int> taskComplete)
{
this.isComplete = false;
this.source = source;
this.offset = offset;
this.encodedlength = encodedlength;
this.stride = stride;
this.height = height;
this.width = width;
this.destination = destination;
this.destinationoffset = destinationoffset;
this.returnint = returnint;
if (flags.HasFlag(videoCodecs[0].EncodingFlag))
{
currentCodec = videoCodecs[0];
}
if (flags.HasFlag(videoCodecs[1].EncodingFlag))
{
currentCodec = videoCodecs[1];
}
completionCallback = taskComplete;
if (flags.HasFlag(FrameControlFlags.IsKeyFrame))
{
isKeyFrame = true;
}
else
{
isKeyFrame = false;
}
}
internal void AddToVideoBuffer(byte[] obj, int length)
{
//int offset = 0;
if (length < VIDEOHEADERSIZE)
{
return;
}
FrameControlFlags control = (FrameControlFlags)BitConverter.ToUInt32(obj, 0);
ushort stride = BitConverter.ToUInt16(obj, sizeof(int));
ushort height = BitConverter.ToUInt16(obj, sizeof(int) + sizeof(ushort));
ushort width = BitConverter.ToUInt16(obj, sizeof(int) + sizeof(ushort) * 2);
ushort framerate = BitConverter.ToUInt16(obj, sizeof(int) + sizeof(ushort) * 3);
int framesize = BitConverter.ToInt32(obj, sizeof(int) + sizeof(ushort) * 4);
//MyLog.Default.WriteLine($"Packet Header: c {control} w {width} s {stride} h {height} f {framerate} fs {framesize} l {length}");
if (stride * height * framerate > videoStride * videoHeight * videoFramerate)
{
videoFrameSize = framesize;
videoStride = stride;
videoHeight = height;
videoFramerate = framerate;
//TODO pause tasks
InitializeVideoBuffer(); //remap
}
int writebytes = stride * height + VIDEOHEADERSIZE - sizeof(int);
//MyLog.Default.WriteLine($"Writing to Video buffer? {writebytes} {offset} {length}");
if (framesize + VIDEOHEADERSIZE <= length)
{
if (control.HasFlag(FrameControlFlags.IsKeyFrame))
{
try
{
gotfirstvideokeyframe = true;
videosize++;
if (writevideoposition != -1)
{
if (maxframes[writevideoposition] != framecounter[writevideoposition])
{
maxframes[writevideoposition] = framecounter[writevideoposition];
if (taskQueue[writevideoposition] == 0 && completeQueue[writevideoposition] == maxframes[writevideoposition])
{
decodevideosize++;
}
}
}
if (videosize >= 9)
{
decodevideosize--;
videosize--;
}
else
{
writevideoposition += 1;
}
writevideoposition %= 10;
maxframes[writevideoposition] = framerate;
completeQueue[writevideoposition] = 0;
framecounter[writevideoposition] = 0;
hasKeyFrame[writevideoposition] = false;
keyFrame[writevideoposition] = null;
taskQueue[writevideoposition] = 0;
vptr[writevideoposition] = 0;
if (paused && audiosize >= 2 && videosize >= 2)
{
paused = false;
}
}
catch (Exception ex)
{
MyLog.Default.WriteLine(ex.ToString());
}
}
else if (!gotfirstvideokeyframe)
{
return;
}
if (writevideoposition == -1 || vptr[writevideoposition] + writebytes > videostorage[writevideoposition].Length)
{
return; //discard
}
framecounter[writevideoposition]++;
FrameTask task;
lock (taskPool)
{
if (taskPool.Count > 0)
{
task = taskPool.Pop();
}
else
{
task = new FrameTask();
}
}
taskQueue[writevideoposition]++;
//MyLog.Default.WriteLine($"Preparing Task {writevideoposition} {taskQueue[writevideoposition]} ");
task.Prepare(obj, VIDEOHEADERSIZE, framesize, stride, height, width, videostorage[writevideoposition], vptr[writevideoposition] + VIDEOHEADERSIZE - sizeof(int), writevideoposition, control, TaskComplete);
if (task.IsKeyFrame || hasKeyFrame[writevideoposition])
{
task.StartBackground(keyFrame[writevideoposition]);
}
else
{
lock (waitingOnKeyframe)
{
waitingOnKeyframe.Push(task);
}
}
//MyLog.Default.WriteLine($"Read {offset} {writebytes} {obj.Length}");
//MyLog.Default.WriteLine($"Write {vptr[writevideoposition]} {writebytes} {videostorage[writevideoposition].Length}");
Buffer.BlockCopy(obj, 0, videostorage[writevideoposition], vptr[writevideoposition], VIDEOHEADERSIZE - sizeof(int));
vptr[writevideoposition] += writebytes;
}
}