public void Close()
{
Marshal.FreeHGlobal(Packet);
if (rawData != IntPtr.Zero)
{
AV.av_free(rawData);
}
}
internal override IntPtr DoDecode()
{
int size = 0;
IntPtr rawData = AV.avcodec_alloc_frame();
int ret = AV.avcodec_decode_audio4(Codec,
rawData,
out size,
Packet);
if (ret <= 0 || size == 0)
{
AV.av_free(rawData);
return(IntPtr.Zero);
}
return(rawData);
}
internal override IntPtr DoDecode()
{
IntPtr rawData = AV.avcodec_alloc_frame();
int finish = 0;;
int ret = AV.avcodec_decode_video2(Codec,
rawData,
out finish,
Packet);
if (ret < 0)
{
AV.av_free(rawData);
return(IntPtr.Zero);
}
return(rawData);
}
public bool Decode()
{
if (rawData != IntPtr.Zero)
{
AV.av_free(rawData);
}
rawData = DoDecode();
if (rawData != IntPtr.Zero)
{
avFrame = new NativeGetter <AV.AVFrame>(rawData).Get();
return(true);
}
else
{
return(false);
}
}
private void ConvertToBitmap(ref VideoFrameType t)
{
var frame = avFrame;
//FFmpeg.AVFrame final = gcnew AvFrame(PIX_FMT_BGR24, this->size);
IntPtr final = AV.avcodec_alloc_frame();
AV.AVFrame finalFrame = new NativeGetter <AV.AVFrame>(final).Get();
var dst_fmt = AV.AVPixelFormat.AV_PIX_FMT_BGR24;
int count = AV.avpicture_get_size(dst_fmt, codecCtx.width, codecCtx.height);
IntPtr bufferArr = Marshal.AllocHGlobal(count);
AV.avpicture_fill(final, bufferArr, dst_fmt, codecCtx.width, codecCtx.height);
IntPtr swsContext = AV.sws_getContext(codecCtx.width, codecCtx.height, codecCtx.pix_fmt,
codecCtx.width, codecCtx.height, dst_fmt, AV.SWS_BICUBIC, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (swsContext == IntPtr.Zero)
{
throw new Exception();
}
finalFrame = new NativeGetter <AV.AVFrame>(final).Get();
AV.sws_scale(swsContext, frame.data, frame.linesize, 0, codecCtx.height, finalFrame.data, finalFrame.linesize);
new NativeSetter <AV.AVFrame>(final).Set(finalFrame);
// Array::Reverse(bufferArr);
byte[] buffer = new byte[count];
Marshal.Copy(bufferArr, buffer, 0, count);
AV.av_free(final);
Marshal.FreeHGlobal(bufferArr);
t.width = codecCtx.width;
t.height = codecCtx.height;
t.SourceFormat = codecCtx.pix_fmt;
t.DestFormat = dst_fmt;
t.managedData = buffer;
t.linesize = finalFrame.linesize[0];
}
