public static void ConvertWrite(SnmFile snm, string fileName)
{
if (snm == null)
{
throw new ArgumentNullException(nameof(snm));
}
if (string.IsNullOrEmpty(fileName))
{
throw new ArgumentNullException(nameof(fileName));
}
int fps = (1000000 + snm.Header.FrameDelay / 2) / snm.Header.FrameDelay;
long frameDuration = 10 * 1000 * 1000 / fps;
InitializeSinkWriter(
fileName,
snm.Header.Width,
snm.Header.Height,
fps,
out IMFSinkWriter writer,
out int videoStream,
out int audioStream);
try
{
snm.BeginPlay();
try
{
long rtStartVideo = 0;
long rtStartAudio = 0;
while (snm.RetrieveNextFrame(out byte[] audioData, out byte[] videoData))
{
if (videoData != null)
{
WriteVideoFrame(snm.Header.Width, snm.Header.Height, frameDuration, writer, videoStream, rtStartVideo, videoData);
rtStartVideo += frameDuration;
}
if (audioData != null)
{
byte[] buffer = ConvertAudio22050To44100(audioData);
long duration = (long)(10 * 1000 * 1000) * audioData.Length / (22050 * 4);
WriteAudioFrame(duration, writer, audioStream, rtStartAudio, buffer);
rtStartAudio += duration;
}
}
}
finally
{
snm.EndPlay();
}
writer.Finalize_();
}
finally
{
Marshal.ReleaseComObject(writer);
}
}
