public FFmpegCodec(FFmpegFuncs ffmpeg, AVCodec *codec)
{
this.ffmpeg = ffmpeg;
Pointer = codec;
SupportedHwDeviceTypes = new Lazy <IReadOnlyList <AVHWDeviceType> >(() =>
{
var list = new List <AVHWDeviceType>();
int i = 0;
while (true)
{
var hwCfg = ffmpeg.avcodec_get_hw_config(codec, i);
if (hwCfg == null)
{
break;
}
list.Add(hwCfg->device_type);
i++;
}
return(list);
});
}
/// <summary>
/// Creates a new video decoder that decodes the given video stream.
/// </summary>
/// <param name="videoStream">The stream that should be decoded.</param>
public VideoDecoder(Stream videoStream)
{
ffmpeg = CreateFuncs();
this.videoStream = videoStream;
if (!videoStream.CanRead)
{
throw new InvalidOperationException($"The given stream does not support reading. A stream used for a {nameof(VideoDecoder)} must support reading.");
}
State = DecoderState.Ready;
decodedFrames = new ConcurrentQueue <DecodedFrame>();
decoderCommands = new ConcurrentQueue <Action>();
availableTextures = new ConcurrentQueue <Texture>(); // TODO: use "real" object pool when there's some public pool supporting disposables
handle = new ObjectHandle <VideoDecoder>(this, GCHandleType.Normal);
TargetHardwareVideoDecoders.BindValueChanged(e =>
{
// ignore if decoding wasn't initialized yet.
if (formatContext == null)
{
return;
}
decoderCommands.Enqueue(recreateCodecContext);
});
}
/// <summary>
/// Creates a new video decoder that decodes the given video stream.
/// </summary>
/// <param name="videoStream">The stream that should be decoded.</param>
public VideoDecoder(Stream videoStream)
{
ffmpeg = CreateFuncs();
this.videoStream = videoStream;
if (!videoStream.CanRead)
{
throw new InvalidOperationException($"The given stream does not support reading. A stream used for a {nameof(VideoDecoder)} must support reading.");
}
State = DecoderState.Ready;
decodedFrames = new ConcurrentQueue <DecodedFrame>();
decoderCommands = new ConcurrentQueue <Action>();
availableTextures = new ConcurrentQueue <Texture>(); // TODO: use "real" object pool when there's some public pool supporting disposables
handle = new ObjectHandle <VideoDecoder>(this, GCHandleType.Normal);
}