private void encodingThread()
{
var firstTimestamp = default(DateTime);
while (true)
{
_sync.WaitOne();
VideoFrame frame;
if (!_framesToEncode.TryDequeue(out frame))
{
continue;
}
if (frame == null)
{
break;
}
var timestamp = frame.Timestamp;
_rescaler.RescaleFrame(frame, _frameRescaled);
_framesFree.Enqueue(frame);
if (firstTimestamp == default(DateTime))
{
firstTimestamp = timestamp;
}
_encoder.EncodeFrame(_frameRescaled, (long)Math.Round((timestamp - firstTimestamp).TotalSeconds * _settings.Video.Timebase.Den / _settings.Video.Timebase.Num));
}
_encoder.Dispose();
_encoder = null;
}
unsafe static void ExampleRGB(string filename)
{
var settings = new BasicEncoderSettings();
settings.Video.Width = 640;
settings.Video.Height = 480;
settings.Video.Timebase = new Rational(1, 30);
settings.Video.Bitrate = 2000000;
settings.Audio.SampleRate = 44100;
settings.Audio.SampleFormat = BasicSampleFormat.FLTP;
using (var enc = new BasicEncoder(filename, settings))
using (var vFrameGen = new BasicVideoFrame(1000, 2000, BasicPixelFormat.GBRP))
using (var vFrameEnc = new BasicVideoFrame(settings.Video.Width, settings.Video.Height, BasicPixelFormat.YUV420P))
using (var rescaler = new BasicRescaler(vFrameGen, vFrameEnc, BasicRescalerFlags.Lanczos))
using (var aFrame = new BasicAudioFrame(settings.Audio.FrameSize == 0 ? 10000 : settings.Audio.FrameSize, settings.Audio.SampleFormat, settings.Audio.ChannelLayout))
{
byte * bufR = vFrameGen.GetBuffer(2);
byte * bufG = vFrameGen.GetBuffer(1);
byte * bufB = vFrameGen.GetBuffer(0);
int stride = vFrameGen.GetStride(0); // equal for 1 & 2
float *bufA1 = (float *)aFrame.GetBuffer(0);
float *bufA2 = (float *)aFrame.GetBuffer(1);
float t = 0;
float tInc = (float)(2 * Math.PI * 110.0 / settings.Audio.SampleRate);
float tInc2 = tInc / settings.Audio.SampleRate;
int aSamples = 0;
for (int frameNumber = 0; frameNumber < 5 * settings.Video.Timebase.Den / settings.Video.Timebase.Num; frameNumber++)
{
for (int y = 0; y < vFrameGen.Height; y++)
{
for (int x = 0; x < vFrameGen.Width; x++)
{
bufR[y * stride + x] = (byte)(x + y + frameNumber * 3);
bufG[y * stride + x] = (byte)(128 + y + frameNumber * 2);
bufB[y * stride + x] = (byte)(64 + x + frameNumber * 5);
}
}
rescaler.RescaleFrame(vFrameGen, vFrameEnc);
enc.EncodeFrame(vFrameEnc, frameNumber);
while (aSamples < frameNumber * settings.Audio.SampleRate * settings.Video.Timebase.Num / settings.Video.Timebase.Den)
{
for (int k = 0; k < aFrame.SampleCount; k++)
{
float sample = (float)Math.Sin(t) * 0.5f;
bufA1[k] = sample;
bufA2[k] = sample;
t += tInc;
tInc += tInc2;
}
enc.EncodeFrame(aFrame, aSamples);
aSamples += aFrame.SampleCount;
}
}
}
}