/// <summary>
/// Initializes a new instance of the <see cref="VideoStream"/> class.
/// </summary>
/// <param name="video">The video stream.</param>
/// <param name="options">The decoder settings.</param>
internal VideoStream(InputStream <VideoFrame> video, MediaOptions options)
{
stream = video;
mediaOptions = options;
frame = VideoFrame.CreateEmpty();
scaler = new Scaler();
}
/// <summary>
/// Initializes a new instance of the <see cref="VideoStream"/> class.
/// </summary>
/// <param name="video">The video stream.</param>
/// <param name="options">The decoder settings.</param>
internal VideoStream(InputStream <VideoFrame> video, MediaOptions options)
{
stream = video;
mediaOptions = options;
frame = VideoFrame.CreateEmpty();
converter = new ImageConverter();
}
/// <summary>
/// Initializes a new instance of the <see cref="VideoStream"/> class.
/// </summary>
/// <param name="video">The video stream.</param>
/// <param name="options">The decoder settings.</param>
internal VideoStream(Decoder <VideoFrame> video, MediaOptions options)
{
stream = video;
mediaOptions = options;
frame = VideoFrame.CreateEmpty();
outputFrameSize = options.TargetVideoSize ?? video.Info.FrameSize;
converter = new Lazy <ImageConverter>(() => new ImageConverter(video.Info.FrameSize, video.Info.AVPixelFormat, outputFrameSize, (AVPixelFormat)options.VideoPixelFormat));
}
/// <summary>
/// Seeks stream to the specified target timestamp.
/// </summary>
/// <param name="targetTs">The target timestamp in the default stream time base.</param>
public void SeekFile(long targetTs)
{
ffmpeg.av_seek_frame(Pointer, Video.Info.Index, targetTs, ffmpeg.AVSEEK_FLAG_BACKWARD).ThrowIfError($"Seek to {targetTs} failed.");
IsAtEndOfFile = false;
Video.PacketQueue.Clear();
Video.FlushBuffers();
AddPacket(MediaType.Video);
AdjustSeekPackets(Video, targetTs, VideoFrame.CreateEmpty());
}
/// <summary> /// Seeks stream by skipping next packets in the file. Useful to seek few frames forward. /// </summary> /// <param name="targetTs">The target timestamp in the default stream time base.</param> public void SeekForward(long targetTs) => AdjustSeekPackets(Video, targetTs, VideoFrame.CreateEmpty());