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NVDEC (H264): Use separate contexts per channel and decode frames in DTS order (#2671)

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* Use separate NVDEC contexts per channel (for FFMPEG)

* Remove NVDEC -> VIC frame override hack

* Add missing bottom_field_pic_order_in_frame_present_flag

* Make FFMPEG logging static

* nit: Remove empty lines

* New FFMPEG decoding approach -- call h264_decode_frame directly, trim surface cache to reduce memory usage

* Fix case

* Silence warnings

* PR feedback

* Per-decoder rather than per-codec ownership of surfaces on the cache
This commit is contained in:
gdkchan 2021-09-28 19:43:40 -03:00 • committed by GitHub
parent 0d23504e30
commit f4f496cb48
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GPG key ID: 4AEE18F83AFDEB23
18 changed files with 358 additions and 200 deletions
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23
Ryujinx.Graphics.Nvdec/H264Decoder.cs
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@ -10,9 +10,7 @@ namespace Ryujinx.Graphics.Nvdec
{
private const int MbSizeInPixels = 16;
private static readonly Decoder _decoder = new Decoder();
public unsafe static void Decode(NvdecDevice device, ResourceManager rm, ref NvdecRegisters state)
public unsafe static void Decode(NvdecDecoderContext context, ResourceManager rm, ref NvdecRegisters state)
{
PictureInfo pictureInfo = rm.Gmm.DeviceRead<PictureInfo>(state.SetPictureInfoOffset);
H264PictureInfo info = pictureInfo.Convert();
@ -22,19 +20,18 @@ namespace Ryujinx.Graphics.Nvdec
int width = (int)pictureInfo.PicWidthInMbs * MbSizeInPixels;
int height = (int)pictureInfo.PicHeightInMbs * MbSizeInPixels;
ISurface outputSurface = rm.Cache.Get(_decoder, CodecId.H264, 0, 0, width, height);
int surfaceIndex = (int)pictureInfo.OutputSurfaceIndex;
if (_decoder.Decode(ref info, outputSurface, bitstream))
uint lumaOffset = state.SetSurfaceLumaOffset[surfaceIndex];
uint chromaOffset = state.SetSurfaceChromaOffset[surfaceIndex];
Decoder decoder = context.GetDecoder();
ISurface outputSurface = rm.Cache.Get(decoder, 0, 0, width, height);
if (decoder.Decode(ref info, outputSurface, bitstream))
{
int li = (int)pictureInfo.LumaOutputSurfaceIndex;
int ci = (int)pictureInfo.ChromaOutputSurfaceIndex;
uint lumaOffset = state.SetSurfaceLumaOffset[li];
uint chromaOffset = state.SetSurfaceChromaOffset[ci];
SurfaceWriter.Write(rm.Gmm, outputSurface, lumaOffset, chromaOffset);
device.OnFrameDecoded(CodecId.H264, lumaOffset, chromaOffset);
}
rm.Cache.Put(outputSurface);