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Diffstat (limited to 'Ryujinx.Graphics.Nvdec/VDec/H264Decoder.cs')
-rw-r--r--Ryujinx.Graphics.Nvdec/VDec/H264Decoder.cs238
1 files changed, 0 insertions, 238 deletions
diff --git a/Ryujinx.Graphics.Nvdec/VDec/H264Decoder.cs b/Ryujinx.Graphics.Nvdec/VDec/H264Decoder.cs
deleted file mode 100644
index 24c7e0b9..00000000
--- a/Ryujinx.Graphics.Nvdec/VDec/H264Decoder.cs
+++ /dev/null
@@ -1,238 +0,0 @@
-using System.IO;
-
-namespace Ryujinx.Graphics.VDec
-{
- class H264Decoder
- {
- private int _log2MaxPicOrderCntLsbMinus4;
- private bool _deltaPicOrderAlwaysZeroFlag;
- private bool _frameMbsOnlyFlag;
- private int _picWidthInMbs;
- private int _picHeightInMapUnits;
- private bool _entropyCodingModeFlag;
- private bool _bottomFieldPicOrderInFramePresentFlag;
- private int _numRefIdxL0DefaultActiveMinus1;
- private int _numRefIdxL1DefaultActiveMinus1;
- private bool _deblockingFilterControlPresentFlag;
- private bool _redundantPicCntPresentFlag;
- private bool _transform8x8ModeFlag;
- private bool _mbAdaptiveFrameFieldFlag;
- private bool _direct8x8InferenceFlag;
- private bool _weightedPredFlag;
- private bool _constrainedIntraPredFlag;
- private bool _fieldPicFlag;
- private bool _bottomFieldFlag;
- private int _log2MaxFrameNumMinus4;
- private int _chromaFormatIdc;
- private int _picOrderCntType;
- private int _picInitQpMinus26;
- private int _chromaQpIndexOffset;
- private int _chromaQpIndexOffset2;
- private int _weightedBipredIdc;
- private int _frameNumber;
- private byte[] _scalingMatrix4;
- private byte[] _scalingMatrix8;
-
- public void Decode(H264ParameterSets Params, H264Matrices matrices, byte[] frameData)
- {
- _log2MaxPicOrderCntLsbMinus4 = Params.Log2MaxPicOrderCntLsbMinus4;
- _deltaPicOrderAlwaysZeroFlag = Params.DeltaPicOrderAlwaysZeroFlag;
- _frameMbsOnlyFlag = Params.FrameMbsOnlyFlag;
- _picWidthInMbs = Params.PicWidthInMbs;
- _picHeightInMapUnits = Params.PicHeightInMapUnits;
- _entropyCodingModeFlag = Params.EntropyCodingModeFlag;
- _bottomFieldPicOrderInFramePresentFlag = Params.BottomFieldPicOrderInFramePresentFlag;
- _numRefIdxL0DefaultActiveMinus1 = Params.NumRefIdxL0DefaultActiveMinus1;
- _numRefIdxL1DefaultActiveMinus1 = Params.NumRefIdxL1DefaultActiveMinus1;
- _deblockingFilterControlPresentFlag = Params.DeblockingFilterControlPresentFlag;
- _redundantPicCntPresentFlag = Params.RedundantPicCntPresentFlag;
- _transform8x8ModeFlag = Params.Transform8x8ModeFlag;
-
- _mbAdaptiveFrameFieldFlag = ((Params.Flags >> 0) & 1) != 0;
- _direct8x8InferenceFlag = ((Params.Flags >> 1) & 1) != 0;
- _weightedPredFlag = ((Params.Flags >> 2) & 1) != 0;
- _constrainedIntraPredFlag = ((Params.Flags >> 3) & 1) != 0;
- _fieldPicFlag = ((Params.Flags >> 5) & 1) != 0;
- _bottomFieldFlag = ((Params.Flags >> 6) & 1) != 0;
-
- _log2MaxFrameNumMinus4 = (int)(Params.Flags >> 8) & 0xf;
- _chromaFormatIdc = (int)(Params.Flags >> 12) & 0x3;
- _picOrderCntType = (int)(Params.Flags >> 14) & 0x3;
- _picInitQpMinus26 = (int)(Params.Flags >> 16) & 0x3f;
- _chromaQpIndexOffset = (int)(Params.Flags >> 22) & 0x1f;
- _chromaQpIndexOffset2 = (int)(Params.Flags >> 27) & 0x1f;
- _weightedBipredIdc = (int)(Params.Flags >> 32) & 0x3;
- _frameNumber = (int)(Params.Flags >> 46) & 0x1ffff;
-
- _picInitQpMinus26 = (_picInitQpMinus26 << 26) >> 26;
- _chromaQpIndexOffset = (_chromaQpIndexOffset << 27) >> 27;
- _chromaQpIndexOffset2 = (_chromaQpIndexOffset2 << 27) >> 27;
-
- _scalingMatrix4 = matrices.ScalingMatrix4;
- _scalingMatrix8 = matrices.ScalingMatrix8;
-
- if (FFmpegWrapper.IsInitialized)
- {
- FFmpegWrapper.DecodeFrame(frameData);
- }
- else
- {
- FFmpegWrapper.H264Initialize();
-
- FFmpegWrapper.DecodeFrame(DecoderHelper.Combine(EncodeHeader(), frameData));
- }
- }
-
- private byte[] EncodeHeader()
- {
- using (MemoryStream data = new MemoryStream())
- {
- H264BitStreamWriter writer = new H264BitStreamWriter(data);
-
- // Sequence Parameter Set.
- writer.WriteU(1, 24);
- writer.WriteU(0, 1);
- writer.WriteU(3, 2);
- writer.WriteU(7, 5);
- writer.WriteU(100, 8);
- writer.WriteU(0, 8);
- writer.WriteU(31, 8);
- writer.WriteUe(0);
- writer.WriteUe(_chromaFormatIdc);
-
- if (_chromaFormatIdc == 3)
- {
- writer.WriteBit(false);
- }
-
- writer.WriteUe(0);
- writer.WriteUe(0);
- writer.WriteBit(false);
- writer.WriteBit(false); //Scaling matrix present flag
-
- writer.WriteUe(_log2MaxFrameNumMinus4);
- writer.WriteUe(_picOrderCntType);
-
- if (_picOrderCntType == 0)
- {
- writer.WriteUe(_log2MaxPicOrderCntLsbMinus4);
- }
- else if (_picOrderCntType == 1)
- {
- writer.WriteBit(_deltaPicOrderAlwaysZeroFlag);
-
- writer.WriteSe(0);
- writer.WriteSe(0);
- writer.WriteUe(0);
- }
-
- int picHeightInMbs = _picHeightInMapUnits / (_frameMbsOnlyFlag ? 1 : 2);
-
- writer.WriteUe(16);
- writer.WriteBit(false);
- writer.WriteUe(_picWidthInMbs - 1);
- writer.WriteUe(picHeightInMbs - 1);
- writer.WriteBit(_frameMbsOnlyFlag);
-
- if (!_frameMbsOnlyFlag)
- {
- writer.WriteBit(_mbAdaptiveFrameFieldFlag);
- }
-
- writer.WriteBit(_direct8x8InferenceFlag);
- writer.WriteBit(false); //Frame cropping flag
- writer.WriteBit(false); //VUI parameter present flag
-
- writer.End();
-
- // Picture Parameter Set.
- writer.WriteU(1, 24);
- writer.WriteU(0, 1);
- writer.WriteU(3, 2);
- writer.WriteU(8, 5);
-
- writer.WriteUe(0);
- writer.WriteUe(0);
-
- writer.WriteBit(_entropyCodingModeFlag);
- writer.WriteBit(false);
- writer.WriteUe(0);
- writer.WriteUe(_numRefIdxL0DefaultActiveMinus1);
- writer.WriteUe(_numRefIdxL1DefaultActiveMinus1);
- writer.WriteBit(_weightedPredFlag);
- writer.WriteU(_weightedBipredIdc, 2);
- writer.WriteSe(_picInitQpMinus26);
- writer.WriteSe(0);
- writer.WriteSe(_chromaQpIndexOffset);
- writer.WriteBit(_deblockingFilterControlPresentFlag);
- writer.WriteBit(_constrainedIntraPredFlag);
- writer.WriteBit(_redundantPicCntPresentFlag);
- writer.WriteBit(_transform8x8ModeFlag);
-
- writer.WriteBit(true);
-
- for (int index = 0; index < 6; index++)
- {
- writer.WriteBit(true);
-
- WriteScalingList(writer, _scalingMatrix4, index * 16, 16);
- }
-
- if (_transform8x8ModeFlag)
- {
- for (int index = 0; index < 2; index++)
- {
- writer.WriteBit(true);
-
- WriteScalingList(writer, _scalingMatrix8, index * 64, 64);
- }
- }
-
- writer.WriteSe(_chromaQpIndexOffset2);
-
- writer.End();
-
- return data.ToArray();
- }
- }
-
- // ZigZag LUTs from libavcodec.
- private static readonly byte[] ZigZagDirect = new byte[]
- {
- 0, 1, 8, 16, 9, 2, 3, 10,
- 17, 24, 32, 25, 18, 11, 4, 5,
- 12, 19, 26, 33, 40, 48, 41, 34,
- 27, 20, 13, 6, 7, 14, 21, 28,
- 35, 42, 49, 56, 57, 50, 43, 36,
- 29, 22, 15, 23, 30, 37, 44, 51,
- 58, 59, 52, 45, 38, 31, 39, 46,
- 53, 60, 61, 54, 47, 55, 62, 63
- };
-
- private static readonly byte[] ZigZagScan = new byte[]
- {
- 0 + 0 * 4, 1 + 0 * 4, 0 + 1 * 4, 0 + 2 * 4,
- 1 + 1 * 4, 2 + 0 * 4, 3 + 0 * 4, 2 + 1 * 4,
- 1 + 2 * 4, 0 + 3 * 4, 1 + 3 * 4, 2 + 2 * 4,
- 3 + 1 * 4, 3 + 2 * 4, 2 + 3 * 4, 3 + 3 * 4
- };
-
- private static void WriteScalingList(H264BitStreamWriter writer, byte[] list, int start, int count)
- {
- byte[] scan = count == 16 ? ZigZagScan : ZigZagDirect;
-
- int lastScale = 8;
-
- for (int index = 0; index < count; index++)
- {
- byte value = list[start + scan[index]];
-
- int deltaScale = value - lastScale;
-
- writer.WriteSe(deltaScale);
-
- lastScale = value;
- }
- }
- }
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-01 02:37:16 +0000