public void Decode( Vp9FrameKeys keys, Vp9FrameHeader header, Vp9ProbabilityTables probs, byte[] frameData) { bool isKeyFrame = ((header.Flags >> 0) & 1) != 0; bool lastIsKeyFrame = ((header.Flags >> 1) & 1) != 0; bool frameSizeChanged = ((header.Flags >> 2) & 1) != 0; bool errorResilientMode = ((header.Flags >> 3) & 1) != 0; bool lastShowFrame = ((header.Flags >> 4) & 1) != 0; bool isFrameIntra = ((header.Flags >> 5) & 1) != 0; bool showFrame = !isFrameIntra; //Write compressed header. byte[] compressedHeaderData; using (MemoryStream compressedHeader = new MemoryStream()) { VpxRangeEncoder writer = new VpxRangeEncoder(compressedHeader); if (!header.Lossless) { if ((uint)header.TxMode >= 3) { writer.Write(3, 2); writer.Write(header.TxMode == 4); } else { writer.Write(header.TxMode, 2); } } if (header.TxMode == 4) { WriteProbabilityUpdate(writer, probs.Tx8x8Probs, DefaultTx8x8Probs); WriteProbabilityUpdate(writer, probs.Tx16x16Probs, DefaultTx16x16Probs); WriteProbabilityUpdate(writer, probs.Tx32x32Probs, DefaultTx32x32Probs); } WriteCoefProbabilityUpdate(writer, header.TxMode, probs.CoefProbs, _defaultCoefProbs); WriteProbabilityUpdate(writer, probs.SkipProbs, _defaultSkipProbs); if (!isFrameIntra) { WriteProbabilityUpdateAligned4(writer, probs.InterModeProbs, _defaultInterModeProbs); if (header.RawInterpolationFilter == 4) { WriteProbabilityUpdate(writer, probs.InterpFilterProbs, _defaultInterpFilterProbs); } WriteProbabilityUpdate(writer, probs.IsInterProbs, _defaultIsInterProbs); if ((header.RefFrameSignBias[1] & 1) != (header.RefFrameSignBias[2] & 1) || (header.RefFrameSignBias[1] & 1) != (header.RefFrameSignBias[3] & 1)) { if ((uint)header.CompPredMode >= 1) { writer.Write(1, 1); writer.Write(header.CompPredMode == 2); } else { writer.Write(0, 1); } } if (header.CompPredMode == 2) { WriteProbabilityUpdate(writer, probs.CompModeProbs, _defaultCompModeProbs); } if (header.CompPredMode != 1) { WriteProbabilityUpdate(writer, probs.SingleRefProbs, _defaultSingleRefProbs); } if (header.CompPredMode != 0) { WriteProbabilityUpdate(writer, probs.CompRefProbs, _defaultCompRefProbs); } for (int index = 0; index < 4; index++) { int i = index * 8; int j = index; WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 0], _defaultYModeProbs0[i + 0]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 1], _defaultYModeProbs0[i + 1]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 2], _defaultYModeProbs0[i + 2]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 3], _defaultYModeProbs0[i + 3]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 4], _defaultYModeProbs0[i + 4]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 5], _defaultYModeProbs0[i + 5]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 6], _defaultYModeProbs0[i + 6]); WriteProbabilityUpdate(writer, probs.YModeProbs0[i + 7], _defaultYModeProbs0[i + 7]); WriteProbabilityUpdate(writer, probs.YModeProbs1[j + 0], _defaultYModeProbs1[j + 0]); } WriteProbabilityUpdateAligned4(writer, probs.PartitionProbs, _defaultPartitionProbs); for (int i = 0; i < 3; i++) { WriteMvProbabilityUpdate(writer, probs.MvJointProbs[i], _defaultMvJointProbs[i]); } for (int i = 0; i < 2; i++) { WriteMvProbabilityUpdate(writer, probs.MvSignProbs[i], _defaultMvSignProbs[i]); for (int j = 0; j < 10; j++) { int index = i * 10 + j; WriteMvProbabilityUpdate(writer, probs.MvClassProbs[index], _defaultMvClassProbs[index]); } WriteMvProbabilityUpdate(writer, probs.MvClass0BitProbs[i], _defaultMvClass0BitProbs[i]); for (int j = 0; j < 10; j++) { int index = i * 10 + j; WriteMvProbabilityUpdate(writer, probs.MvBitsProbs[index], _defaultMvBitsProbs[index]); } } for (int i = 0; i < 2; i++) { for (int j = 0; j < 2; j++) { for (int k = 0; k < 3; k++) { int index = i * 2 * 3 + j * 3 + k; WriteMvProbabilityUpdate(writer, probs.MvClass0FrProbs[index], _defaultMvClass0FrProbs[index]); } } for (int j = 0; j < 3; j++) { int index = i * 3 + j; WriteMvProbabilityUpdate(writer, probs.MvFrProbs[index], _defaultMvFrProbs[index]); } } if (header.AllowHighPrecisionMv) { for (int index = 0; index < 2; index++) { WriteMvProbabilityUpdate(writer, probs.MvClass0HpProbs[index], _defaultMvClass0HpProbs[index]); WriteMvProbabilityUpdate(writer, probs.MvHpProbs[index], _defaultMvHpProbs[index]); } } } writer.End(); compressedHeaderData = compressedHeader.ToArray(); } //Write uncompressed header. using (MemoryStream encodedHeader = new MemoryStream()) { VpxBitStreamWriter writer = new VpxBitStreamWriter(encodedHeader); writer.WriteU(2, 2); //Frame marker. writer.WriteU(0, 2); //Profile. writer.WriteBit(false); //Show existing frame. writer.WriteBit(!isKeyFrame); writer.WriteBit(showFrame); writer.WriteBit(errorResilientMode); if (isKeyFrame) { writer.WriteU(FrameSyncCode, 24); writer.WriteU(0, 3); //Color space. writer.WriteU(0, 1); //Color range. writer.WriteU(header.CurrentFrame.Width - 1, 16); writer.WriteU(header.CurrentFrame.Height - 1, 16); writer.WriteBit(false); //Render and frame size different. _cachedRefFrames.Clear(); //On key frames, all frame slots are set to the current frame, //so the value of the selected slot doesn't really matter. GetNewFrameSlot(keys.CurrKey); } else { if (!showFrame) { writer.WriteBit(isFrameIntra); } if (!errorResilientMode) { writer.WriteU(0, 2); //Reset frame context. } int refreshFrameFlags = 1 << GetNewFrameSlot(keys.CurrKey); if (isFrameIntra) { writer.WriteU(FrameSyncCode, 24); writer.WriteU(refreshFrameFlags, 8); writer.WriteU(header.CurrentFrame.Width - 1, 16); writer.WriteU(header.CurrentFrame.Height - 1, 16); writer.WriteBit(false); //Render and frame size different. } else { writer.WriteU(refreshFrameFlags, 8); int[] refFrameIndex = new int[] { GetFrameSlot(keys.Ref0Key), GetFrameSlot(keys.Ref1Key), GetFrameSlot(keys.Ref2Key) }; byte[] refFrameSignBias = header.RefFrameSignBias; for (int index = 1; index < 4; index++) { writer.WriteU(refFrameIndex[index - 1], 3); writer.WriteU(refFrameSignBias[index], 1); } writer.WriteBit(true); //Frame size with refs. writer.WriteBit(false); //Render and frame size different. writer.WriteBit(header.AllowHighPrecisionMv); writer.WriteBit(header.RawInterpolationFilter == 4); if (header.RawInterpolationFilter != 4) { writer.WriteU(header.RawInterpolationFilter, 2); } } } if (!errorResilientMode) { writer.WriteBit(false); //Refresh frame context. writer.WriteBit(true); //Frame parallel decoding mode. } writer.WriteU(0, 2); //Frame context index. writer.WriteU(header.LoopFilterLevel, 6); writer.WriteU(header.LoopFilterSharpness, 3); writer.WriteBit(header.LoopFilterDeltaEnabled); if (header.LoopFilterDeltaEnabled) { bool[] updateLoopFilterRefDeltas = new bool[4]; bool[] updateLoopFilterModeDeltas = new bool[2]; bool loopFilterDeltaUpdate = false; for (int index = 0; index < header.LoopFilterRefDeltas.Length; index++) { sbyte old = _loopFilterRefDeltas[index]; sbyte New = header.LoopFilterRefDeltas[index]; loopFilterDeltaUpdate |= (updateLoopFilterRefDeltas[index] = old != New); } for (int index = 0; index < header.LoopFilterModeDeltas.Length; index++) { sbyte old = _loopFilterModeDeltas[index]; sbyte New = header.LoopFilterModeDeltas[index]; loopFilterDeltaUpdate |= (updateLoopFilterModeDeltas[index] = old != New); } writer.WriteBit(loopFilterDeltaUpdate); if (loopFilterDeltaUpdate) { for (int index = 0; index < header.LoopFilterRefDeltas.Length; index++) { writer.WriteBit(updateLoopFilterRefDeltas[index]); if (updateLoopFilterRefDeltas[index]) { writer.WriteS(header.LoopFilterRefDeltas[index], 6); } } for (int index = 0; index < header.LoopFilterModeDeltas.Length; index++) { writer.WriteBit(updateLoopFilterModeDeltas[index]); if (updateLoopFilterModeDeltas[index]) { writer.WriteS(header.LoopFilterModeDeltas[index], 6); } } } } writer.WriteU(header.BaseQIndex, 8); writer.WriteDeltaQ(header.DeltaQYDc); writer.WriteDeltaQ(header.DeltaQUvDc); writer.WriteDeltaQ(header.DeltaQUvAc); writer.WriteBit(false); //Segmentation enabled (TODO). int minTileColsLog2 = CalcMinLog2TileCols(header.CurrentFrame.Width); int maxTileColsLog2 = CalcMaxLog2TileCols(header.CurrentFrame.Width); int tileColsLog2Diff = header.TileColsLog2 - minTileColsLog2; int tileColsLog2IncMask = (1 << tileColsLog2Diff) - 1; //If it's less than the maximum, we need to add an extra 0 on the bitstream //to indicate that it should stop reading. if (header.TileColsLog2 < maxTileColsLog2) { writer.WriteU(tileColsLog2IncMask << 1, tileColsLog2Diff + 1); } else { writer.WriteU(tileColsLog2IncMask, tileColsLog2Diff); } bool tileRowsLog2IsNonZero = header.TileRowsLog2 != 0; writer.WriteBit(tileRowsLog2IsNonZero); if (tileRowsLog2IsNonZero) { writer.WriteBit(header.TileRowsLog2 > 1); } writer.WriteU(compressedHeaderData.Length, 16); writer.Flush(); encodedHeader.Write(compressedHeaderData, 0, compressedHeaderData.Length); if (!FFmpegWrapper.IsInitialized) { FFmpegWrapper.Vp9Initialize(); } FFmpegWrapper.DecodeFrame(DecoderHelper.Combine(encodedHeader.ToArray(), frameData)); } _loopFilterRefDeltas = header.LoopFilterRefDeltas; _loopFilterModeDeltas = header.LoopFilterModeDeltas; }
private void Execute(NvGpuVmm vmm, int[] arguments) { if (_currentVideoCodec == VideoCodec.H264) { int frameDataSize = vmm.ReadInt32(_decoderContextAddress + 0x48); H264ParameterSets Params = MemoryHelper.Read <H264ParameterSets>(vmm.Memory, vmm.GetPhysicalAddress(_decoderContextAddress + 0x58)); H264Matrices matrices = new H264Matrices() { ScalingMatrix4 = vmm.ReadBytes(_decoderContextAddress + 0x1c0, 6 * 16), ScalingMatrix8 = vmm.ReadBytes(_decoderContextAddress + 0x220, 2 * 64) }; byte[] frameData = vmm.ReadBytes(_frameDataAddress, frameDataSize); _h264Decoder.Decode(Params, matrices, frameData); } else if (_currentVideoCodec == VideoCodec.Vp9) { int frameDataSize = vmm.ReadInt32(_decoderContextAddress + 0x30); Vp9FrameKeys keys = new Vp9FrameKeys() { CurrKey = vmm.GetPhysicalAddress(_vpxCurrLumaAddress), Ref0Key = vmm.GetPhysicalAddress(_vpxRef0LumaAddress), Ref1Key = vmm.GetPhysicalAddress(_vpxRef1LumaAddress), Ref2Key = vmm.GetPhysicalAddress(_vpxRef2LumaAddress) }; Vp9FrameHeader header = MemoryHelper.Read <Vp9FrameHeader>(vmm.Memory, vmm.GetPhysicalAddress(_decoderContextAddress + 0x48)); Vp9ProbabilityTables probs = new Vp9ProbabilityTables() { SegmentationTreeProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x387, 0x7), SegmentationPredProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x38e, 0x3), Tx8x8Probs = vmm.ReadBytes(_vpxProbTablesAddress + 0x470, 0x2), Tx16x16Probs = vmm.ReadBytes(_vpxProbTablesAddress + 0x472, 0x4), Tx32x32Probs = vmm.ReadBytes(_vpxProbTablesAddress + 0x476, 0x6), CoefProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x5a0, 0x900), SkipProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x537, 0x3), InterModeProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x400, 0x1c), InterpFilterProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x52a, 0x8), IsInterProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x41c, 0x4), CompModeProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x532, 0x5), SingleRefProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x580, 0xa), CompRefProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x58a, 0x5), YModeProbs0 = vmm.ReadBytes(_vpxProbTablesAddress + 0x480, 0x20), YModeProbs1 = vmm.ReadBytes(_vpxProbTablesAddress + 0x47c, 0x4), PartitionProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x4e0, 0x40), MvJointProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x53b, 0x3), MvSignProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x53e, 0x3), MvClassProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x54c, 0x14), MvClass0BitProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x540, 0x3), MvBitsProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x56c, 0x14), MvClass0FrProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x560, 0xc), MvFrProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x542, 0x6), MvClass0HpProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x548, 0x2), MvHpProbs = vmm.ReadBytes(_vpxProbTablesAddress + 0x54a, 0x2) }; byte[] frameData = vmm.ReadBytes(_frameDataAddress, frameDataSize); _vp9Decoder.Decode(keys, header, probs, frameData); } else { ThrowUnimplementedCodec(); } }