protected Decoder(AVStream *stream) : base(stream)
{
codecContext->Codec = FF.avcodec_find_decoder(codecContext->CodecId);
int resultCode = FF.avcodec_open2(codecContext, codecContext->Codec, null);
if (resultCode != 0)
{
throw new FFmpegException(resultCode);
}
}
private void Init(VideoEncoderParameters encoderParams)
{
var pixelFormats = GetSupportedPixelFormats(codec);
if (pixelFormats != null && !pixelFormats.Contains(InFormat.PixelFormat))
{
outFormat = new VideoFormat(InFormat.Width, InFormat.Height, pixelFormats[0]);
resampler = new VideoResampler(InFormat, OutFormat, encoderParams.ResampleFlags);
tempFrame = new VideoFrame();
}
else
{
outFormat = InFormat;
}
framePerSecond = encoderParams.FrameRate;
try {
codecContext->PixFmt = OutFormat.PixelFormat;
codecContext->Width = OutFormat.Width;
codecContext->Height = OutFormat.Height;
codecContext->BitRate = encoderParams.BitRate.Value;
codecContext->TimeBase = encoderParams.FrameRate.Reciprocal;
codecContext->Framerate = encoderParams.FrameRate;
if (encoderParams.GopSize != 0)
{
codecContext->GopSize = encoderParams.GopSize;
}
if (encoderParams.MaxBFrames != 0)
{
codecContext->MaxBFrames = encoderParams.MaxBFrames;
}
if (encoderParams.MbDecision != 0)
{
codecContext->MbDecision = encoderParams.MbDecision;
}
if (encoderParams.Qmin != 0)
{
codecContext->Qmin = encoderParams.Qmin;
}
if (encoderParams.Qmax != 0)
{
codecContext->Qmax = encoderParams.Qmax;
}
var result = FF.avcodec_open2(codecContext, codec, null);
if (result < 0)
{
throw new CSharp.FFmpegException(result);
}
} catch {
Dispose();
throw;
}
}
private void Init(AVCodecID codecID, BitRate bitRate)
{
outFormat = MatchSupportedFormat(codecID, InFormat);
if (!InFormat.Equals(OutFormat))
{
resampler = new AudioResampler(InFormat, OutFormat);
tempFrame = new AudioFrame();
}
codecContext->SampleFmt = outFormat.SampleFormat;
codecContext->SampleRate = outFormat.SampleRate;
codecContext->ChannelLayout = outFormat.ChannelLayout;
codecContext->Channels = outFormat.Channels;
codecContext->BitRate = bitRate.Value;
var rates = codecContext->Flags;
int result = FF.avcodec_open2(codecContext, codec, null);
if (result < 0)
{
throw new FFmpegException(result);
}
}
