mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-19 07:08:43 +02:00
59 lines
1.5 KiB
C#
59 lines
1.5 KiB
C#
using FFmpeg.AutoGen;
|
|
using System;
|
|
|
|
namespace Ryujinx.Graphics.Nvdec.H264
|
|
{
|
|
unsafe class FFmpegContext : IDisposable
|
|
{
|
|
private readonly AVCodec* _codec;
|
|
private AVPacket* _packet;
|
|
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);
|
|
|
|
_packet = ffmpeg.av_packet_alloc();
|
|
}
|
|
|
|
public int DecodeFrame(Surface output, ReadOnlySpan<byte> bitstream)
|
|
{
|
|
// Ensure the packet is clean before proceeding
|
|
ffmpeg.av_packet_unref(_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()
|
|
{
|
|
fixed (AVPacket** ppPacket = &_packet)
|
|
{
|
|
ffmpeg.av_packet_free(ppPacket);
|
|
}
|
|
|
|
ffmpeg.avcodec_close(_context);
|
|
|
|
fixed (AVCodecContext** ppContext = &_context)
|
|
{
|
|
ffmpeg.avcodec_free_context(ppContext);
|
|
}
|
|
}
|
|
}
|
|
}
|