f4f496cb48
* 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
40 lines
1.4 KiB
C#
40 lines
1.4 KiB
C#
using Ryujinx.Graphics.Nvdec.H264;
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using Ryujinx.Graphics.Nvdec.Image;
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using Ryujinx.Graphics.Nvdec.Types.H264;
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using Ryujinx.Graphics.Video;
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using System;
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namespace Ryujinx.Graphics.Nvdec
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{
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static class H264Decoder
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{
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private const int MbSizeInPixels = 16;
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public unsafe static void Decode(NvdecDecoderContext context, ResourceManager rm, ref NvdecRegisters state)
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{
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PictureInfo pictureInfo = rm.Gmm.DeviceRead<PictureInfo>(state.SetPictureInfoOffset);
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H264PictureInfo info = pictureInfo.Convert();
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ReadOnlySpan<byte> bitstream = rm.Gmm.DeviceGetSpan(state.SetBitstreamOffset, (int)pictureInfo.BitstreamSize);
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int width = (int)pictureInfo.PicWidthInMbs * MbSizeInPixels;
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int height = (int)pictureInfo.PicHeightInMbs * MbSizeInPixels;
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int surfaceIndex = (int)pictureInfo.OutputSurfaceIndex;
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uint lumaOffset = state.SetSurfaceLumaOffset[surfaceIndex];
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uint chromaOffset = state.SetSurfaceChromaOffset[surfaceIndex];
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Decoder decoder = context.GetDecoder();
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ISurface outputSurface = rm.Cache.Get(decoder, 0, 0, width, height);
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if (decoder.Decode(ref info, outputSurface, bitstream))
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{
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SurfaceWriter.Write(rm.Gmm, outputSurface, lumaOffset, chromaOffset);
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}
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rm.Cache.Put(outputSurface);
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}
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}
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}
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