public static Surface Read(ResourceManager rm, ref SlotSurfaceConfig config, ref PlaneOffsets offsets)
{
switch (config.SlotPixelFormat)
{
case PixelFormat.Y8___V8U8_N420: return(ReadNv12(rm, ref config, ref offsets));
}
Logger.Error?.Print(LogClass.Vic, $"Unsupported pixel format \"{config.SlotPixelFormat}\".");
int lw = config.SlotLumaWidth + 1;
int lh = config.SlotLumaHeight + 1;
return(new Surface(rm.SurfacePool, lw, lh));
}
private static InputSurface ReadSurface(
MemoryManager gmm,
ref SlotSurfaceConfig config,
ref PlaneOffsets offsets,
int bytesPerPixel,
int planes)
{
InputSurface surface = new InputSurface();
int gobBlocksInY = 1 << config.SlotBlkHeight;
bool linear = config.SlotBlkKind == 0;
int lw = config.SlotLumaWidth + 1;
int lh = config.SlotLumaHeight + 1;
int cw = config.SlotChromaWidth + 1;
int ch = config.SlotChromaHeight + 1;
surface.Width = lw;
surface.Height = lh;
surface.UvWidth = cw;
surface.UvHeight = ch;
switch (planes)
{
case 1: surface.Buffer0 = ReadBuffer(gmm, offsets.LumaOffset, linear, lw, lh, bytesPerPixel, gobBlocksInY); break;
case 2: surface.Buffer0 = ReadBuffer(gmm, offsets.LumaOffset, linear, lw, lh, bytesPerPixel, gobBlocksInY);
surface.Buffer1 = ReadBuffer(gmm, offsets.ChromaUOffset, linear, cw, ch, planes == 2 ? 2 : 1, gobBlocksInY);
break;
case 3: surface.Buffer0 = ReadBuffer(gmm, offsets.LumaOffset, linear, lw, lh, bytesPerPixel, gobBlocksInY);
surface.Buffer1 = ReadBuffer(gmm, offsets.ChromaUOffset, linear, cw, ch, planes == 2 ? 2 : 1, gobBlocksInY);
surface.Buffer2 = ReadBuffer(gmm, offsets.ChromaVOffset, linear, cw, ch, 1, gobBlocksInY);
break;
default: if (planes > 3)
{
surface.Buffer0 = ReadBuffer(gmm, offsets.LumaOffset, linear, lw, lh, bytesPerPixel, gobBlocksInY);
surface.Buffer1 = ReadBuffer(gmm, offsets.ChromaUOffset, linear, cw, ch, planes == 2 ? 2 : 1, gobBlocksInY);
surface.Buffer2 = ReadBuffer(gmm, offsets.ChromaVOffset, linear, cw, ch, 1, gobBlocksInY);
}
break;
}
return(surface);
}
private static InputSurface ReadSurface(
ResourceManager rm,
ref SlotConfig config,
ref SlotSurfaceConfig surfaceConfig,
ref Array8 <PlaneOffsets> offsets,
int bytesPerPixel,
int planes)
{
InputSurface surface = new InputSurface();
surface.Initialize();
int gobBlocksInY = 1 << surfaceConfig.SlotBlkHeight;
bool linear = surfaceConfig.SlotBlkKind == 0;
int lw = surfaceConfig.SlotLumaWidth + 1;
int lh = surfaceConfig.SlotLumaHeight + 1;
int cw = surfaceConfig.SlotChromaWidth + 1;
int ch = surfaceConfig.SlotChromaHeight + 1;
// Interlaced inputs have double the height when deinterlaced.
int heightShift = config.FrameFormat.IsField() ? 1 : 0;
surface.Width = lw;
surface.Height = lh << heightShift;
surface.UvWidth = cw;
surface.UvHeight = ch << heightShift;
if (planes > 0)
{
surface.SetBuffer0(ReadBuffer(rm, ref config, ref offsets, linear, 0, lw, lh, bytesPerPixel, gobBlocksInY));
}
if (planes > 1)
{
surface.SetBuffer1(ReadBuffer(rm, ref config, ref offsets, linear, 1, cw, ch, planes == 2 ? 2 : 1, gobBlocksInY));
}
if (planes > 2)
{
surface.SetBuffer2(ReadBuffer(rm, ref config, ref offsets, linear, 2, cw, ch, 1, gobBlocksInY));
}
return(surface);
}
private unsafe static Surface ReadNv12(ResourceManager rm, ref SlotSurfaceConfig config, ref PlaneOffsets offsets)
{
InputSurface input = ReadSurface(rm.Gmm, ref config, ref offsets, 1, 2);
int width = input.Width;
int height = input.Height;
int yStride = GetPitch(width, 1);
int uvStride = GetPitch(input.UvWidth, 2);
Surface output = new Surface(rm.SurfacePool, width, height);
if (Sse41.IsSupported)
{
Vector128 <byte> shufMask = Vector128.Create(
(byte)0, (byte)2, (byte)3, (byte)1,
(byte)4, (byte)6, (byte)7, (byte)5,
(byte)8, (byte)10, (byte)11, (byte)9,
(byte)12, (byte)14, (byte)15, (byte)13);
Vector128 <short> alphaMask = Vector128.Create(0xffUL << 48).AsInt16();
int yStrideGap = yStride - width;
int uvStrideGap = uvStride - input.UvWidth;
int widthTrunc = width & ~0xf;
fixed(Pixel *dstPtr = output.Data)
{
Pixel *op = dstPtr;
fixed(byte *src0Ptr = input.Buffer0, src1Ptr = input.Buffer1)
{
byte *i0p = src0Ptr;
for (int y = 0; y < height; y++)
{
byte *i1p = src1Ptr + (y >> 1) * uvStride;
int x = 0;
for (; x < widthTrunc; x += 16, i0p += 16, i1p += 16)
{
Vector128 <short> ya0 = Sse41.ConvertToVector128Int16(i0p);
Vector128 <short> ya1 = Sse41.ConvertToVector128Int16(i0p + 8);
Vector128 <byte> uv = Sse2.LoadVector128(i1p);
Vector128 <short> uv0 = Sse2.UnpackLow(uv.AsInt16(), uv.AsInt16());
Vector128 <short> uv1 = Sse2.UnpackHigh(uv.AsInt16(), uv.AsInt16());
Vector128 <short> rgba0 = Sse2.UnpackLow(ya0, uv0);
Vector128 <short> rgba1 = Sse2.UnpackHigh(ya0, uv0);
Vector128 <short> rgba2 = Sse2.UnpackLow(ya1, uv1);
Vector128 <short> rgba3 = Sse2.UnpackHigh(ya1, uv1);
rgba0 = Ssse3.Shuffle(rgba0.AsByte(), shufMask).AsInt16();
rgba1 = Ssse3.Shuffle(rgba1.AsByte(), shufMask).AsInt16();
rgba2 = Ssse3.Shuffle(rgba2.AsByte(), shufMask).AsInt16();
rgba3 = Ssse3.Shuffle(rgba3.AsByte(), shufMask).AsInt16();
Vector128 <short> rgba16_0 = Sse41.ConvertToVector128Int16(rgba0.AsByte());
Vector128 <short> rgba16_1 = Sse41.ConvertToVector128Int16(HighToLow(rgba0.AsByte()));
Vector128 <short> rgba16_2 = Sse41.ConvertToVector128Int16(rgba1.AsByte());
Vector128 <short> rgba16_3 = Sse41.ConvertToVector128Int16(HighToLow(rgba1.AsByte()));
Vector128 <short> rgba16_4 = Sse41.ConvertToVector128Int16(rgba2.AsByte());
Vector128 <short> rgba16_5 = Sse41.ConvertToVector128Int16(HighToLow(rgba2.AsByte()));
Vector128 <short> rgba16_6 = Sse41.ConvertToVector128Int16(rgba3.AsByte());
Vector128 <short> rgba16_7 = Sse41.ConvertToVector128Int16(HighToLow(rgba3.AsByte()));
rgba16_0 = Sse2.Or(rgba16_0, alphaMask);
rgba16_1 = Sse2.Or(rgba16_1, alphaMask);
rgba16_2 = Sse2.Or(rgba16_2, alphaMask);
rgba16_3 = Sse2.Or(rgba16_3, alphaMask);
rgba16_4 = Sse2.Or(rgba16_4, alphaMask);
rgba16_5 = Sse2.Or(rgba16_5, alphaMask);
rgba16_6 = Sse2.Or(rgba16_6, alphaMask);
rgba16_7 = Sse2.Or(rgba16_7, alphaMask);
rgba16_0 = Sse2.ShiftLeftLogical(rgba16_0, 2);
rgba16_1 = Sse2.ShiftLeftLogical(rgba16_1, 2);
rgba16_2 = Sse2.ShiftLeftLogical(rgba16_2, 2);
rgba16_3 = Sse2.ShiftLeftLogical(rgba16_3, 2);
rgba16_4 = Sse2.ShiftLeftLogical(rgba16_4, 2);
rgba16_5 = Sse2.ShiftLeftLogical(rgba16_5, 2);
rgba16_6 = Sse2.ShiftLeftLogical(rgba16_6, 2);
rgba16_7 = Sse2.ShiftLeftLogical(rgba16_7, 2);
Sse2.Store((short *)(op + (uint)x + 0), rgba16_0);
Sse2.Store((short *)(op + (uint)x + 2), rgba16_1);
Sse2.Store((short *)(op + (uint)x + 4), rgba16_2);
Sse2.Store((short *)(op + (uint)x + 6), rgba16_3);
Sse2.Store((short *)(op + (uint)x + 8), rgba16_4);
Sse2.Store((short *)(op + (uint)x + 10), rgba16_5);
Sse2.Store((short *)(op + (uint)x + 12), rgba16_6);
Sse2.Store((short *)(op + (uint)x + 14), rgba16_7);
}
for (; x < width; x++, i1p += (x & 1) * 2)
{
Pixel *px = op + (uint)x;
px->R = Upsample(*i0p++);
px->G = Upsample(*i1p);
px->B = Upsample(*(i1p + 1));
px->A = 0x3ff;
}
op += width;
i0p += yStrideGap;
i1p += uvStrideGap;
}
}
}
}
else
{
for (int y = 0; y < height; y++)
{
int uvBase = (y >> 1) * uvStride;
for (int x = 0; x < width; x++)
{
output.SetR(x, y, Upsample(input.Buffer0[y * yStride + x]));
int uvOffs = uvBase + (x & ~1);
output.SetG(x, y, Upsample(input.Buffer1[uvOffs]));
output.SetB(x, y, Upsample(input.Buffer1[uvOffs + 1]));
output.SetA(x, y, 0x3ff);
}
}
}
return(output);
}
