mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-20 07:38:42 +02:00
52 lines
1.3 KiB
C#
52 lines
1.3 KiB
C#
|
using FFmpeg.AutoGen;
|
|||
|
using System;
|
|||
|
|
|||
|
namespace Ryujinx.Graphics.Nvdec.H264
|
|||
|
{
|
|||
|
unsafe class FFmpegContext : IDisposable
|
|||
|
{
|
|||
|
private readonly AVCodec* _codec;
|
|||
|
private AVCodecContext* _context;
|
|||
|
|
|||
|
public FFmpegContext()
|
|||
|
{
|
|||
|
_codec = ffmpeg.avcodec_find_decoder(AVCodecID.AV_CODEC_ID_H264);
|
|||
|
_context = ffmpeg.avcodec_alloc_context3(_codec);
|
|||
|
|
|||
|
ffmpeg.avcodec_open2(_context, _codec, null);
|
|||
|
}
|
|||
|
|
|||
|
public int DecodeFrame(Surface output, ReadOnlySpan<byte> bitstream)
|
|||
|
{
|
|||
|
AVPacket packet;
|
|||
|
|
|||
|
ffmpeg.av_init_packet(&packet);
|
|||
|
|
|||
|
fixed (byte* ptr = bitstream)
|
|||
|
{
|
|||
|
packet.data = ptr;
|
|||
|
packet.size = bitstream.Length;
|
|||
|
|
|||
|
int rc = ffmpeg.avcodec_send_packet(_context, &packet);
|
|||
|
|
|||
|
if (rc != 0)
|
|||
|
{
|
|||
|
return rc;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
return ffmpeg.avcodec_receive_frame(_context, output.Frame);
|
|||
|
}
|
|||
|
|
|||
|
public void Dispose()
|
|||
|
{
|
|||
|
ffmpeg.avcodec_close(_context);
|
|||
|
|
|||
|
fixed (AVCodecContext** ppContext = &_context)
|
|||
|
{
|
|||
|
ffmpeg.avcodec_free_context(ppContext);
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
}
|