| private YCbCrtoRGB ( int &dst, int Y, int Cb, int Cr ) : void | ||
| dst | int | |
| Y | int | |
| Cb | int | |
| Cr | int | |
| return | void | |
/// <summary>
/// 8-bit packed YCbCr samples w/ 1,2 subsampling => RGB
/// </summary>
private static void putcontig8bitYCbCr12tile(
TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
{
bufferShift = (bufferShift / 2) * 4;
int rasterOffset2 = rasterOffset + width + rasterShift;
while (height >= 2)
{
x = width;
do
{
int Cb = buffer[offset + 2];
int Cr = buffer[offset + 3];
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 0], buffer[offset + 1], Cb, Cr);
rasterOffset++;
rasterOffset2++;
offset += 4;
} while (--x != 0);
rasterOffset += rasterShift * 2 + width;
rasterOffset2 += rasterShift * 2 + width;
offset += bufferShift;
height -= 2;
}
if (height == 1)
{
x = width;
do
{
int Cb = buffer[offset + 2];
int Cr = buffer[offset + 3];
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
rasterOffset++;
offset += 4;
} while (--x != 0);
}
}
/// <summary>
/// 8-bit packed YCbCr samples w/ no subsampling => RGB
/// </summary>
private static void putcontig8bitYCbCr11tile(
TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
{
bufferShift *= 3;
do
{
x = width; // was x = w >> 1; patched 2000/09/25 [email protected]
do
{
int Cb = buffer[offset + 1];
int Cr = buffer[offset + 2];
img.YCbCrtoRGB(out raster[rasterOffset], buffer[offset + 0], Cb, Cr);
rasterOffset++;
offset += 3;
}
while (--x != 0);
rasterOffset += rasterShift;
offset += bufferShift;
}
while (--height != 0);
}
/// <summary>
/// 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB
/// </summary>
private static void putcontig8bitYCbCr41tile(
TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
{
// XXX adjust bufferShift
do
{
x = width >> 2;
do
{
int Cb = buffer[offset + 4];
int Cr = buffer[offset + 5];
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 2], buffer[offset + 2], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 3], buffer[offset + 3], Cb, Cr);
rasterOffset += 4;
offset += 6;
}
while (--x != 0);
if ((width & 3) != 0)
{
int Cb = buffer[offset + 4];
int Cr = buffer[offset + 5];
int xx = width & 3;
if (xx == 3)
img.YCbCrtoRGB(out raster[rasterOffset + 2], buffer[offset + 2], Cb, Cr);
if (xx == 3 || xx == 2)
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
if (xx == 3 || xx == 2 || xx == 1)
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
rasterOffset += xx;
offset += 6;
}
rasterOffset += rasterShift;
offset += bufferShift;
}
while (--height != 0);
}
/// <summary>
/// 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB
/// </summary>
private static void putcontig8bitYCbCr42tile(
TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
{
int rasterOffset2 = rasterOffset + width + rasterShift;
int incr = 2 * rasterShift + width;
bufferShift = (bufferShift * 10) / 4;
if ((height & 3) == 0 && (width & 1) == 0)
{
for (; height >= 2; height -= 2)
{
x = width >> 2;
do
{
int Cb = buffer[offset + 8];
int Cr = buffer[offset + 9];
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 2], buffer[offset + 2], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 3], buffer[offset + 3], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 0], buffer[offset + 4], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 1], buffer[offset + 5], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 2], buffer[offset + 6], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 3], buffer[offset + 7], Cb, Cr);
rasterOffset += 4;
rasterOffset2 += 4;
offset += 10;
}
while (--x != 0);
rasterOffset += incr;
rasterOffset2 += incr;
offset += bufferShift;
}
}
else
{
while (height > 0)
{
for (x = width; x > 0; )
{
int Cb = buffer[offset + 8];
int Cr = buffer[offset + 9];
bool x_goOn = false;
if (x < 1 || x > 3)
{
if (height != 1)
img.YCbCrtoRGB(out raster[rasterOffset2 + 3], buffer[offset + 7], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 3], buffer[offset + 3], Cb, Cr);
x_goOn = true;
}
if (x == 3 || x_goOn)
{
if (height != 1)
img.YCbCrtoRGB(out raster[rasterOffset2 + 2], buffer[offset + 6], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 2], buffer[offset + 2], Cb, Cr);
x_goOn = true;
}
if (x == 2 || x_goOn)
{
if (height != 1)
img.YCbCrtoRGB(out raster[rasterOffset2 + 1], buffer[offset + 5], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
x_goOn = true;
}
if (x == 1 || x_goOn)
{
if (height != 1)
img.YCbCrtoRGB(out raster[rasterOffset2 + 0], buffer[offset + 4], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
}
if (x < 4)
{
rasterOffset += x;
rasterOffset2 += x;
x = 0;
}
else
{
rasterOffset += 4;
rasterOffset2 += 4;
x -= 4;
}
offset += 10;
}
if (height <= 2)
break;
height -= 2;
rasterOffset += incr;
rasterOffset2 += incr;
offset += bufferShift;
}
}
}
/// <summary>
/// 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB
/// </summary>
private static void putcontig8bitYCbCr44tile(
TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
{
int rasterOffset1 = rasterOffset + width + rasterShift;
int rasterOffset2 = rasterOffset1 + width + rasterShift;
int rasterOffset3 = rasterOffset2 + width + rasterShift;
int incr = 3 * width + 4 * rasterShift;
// adjust bufferShift
bufferShift = (bufferShift * 18) / 4;
if ((height & 3) == 0 && (width & 3) == 0)
{
for (; height >= 4; height -= 4)
{
x = width >> 2;
do
{
int Cb = buffer[offset + 16];
int Cr = buffer[offset + 17];
img.YCbCrtoRGB(out raster[rasterOffset], buffer[offset + 0], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 2], buffer[offset + 2], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 3], buffer[offset + 3], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset1 + 0], buffer[offset + 4], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset1 + 1], buffer[offset + 5], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset1 + 2], buffer[offset + 6], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset1 + 3], buffer[offset + 7], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 0], buffer[offset + 8], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 1], buffer[offset + 9], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 2], buffer[offset + 10], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset2 + 3], buffer[offset + 11], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset3 + 0], buffer[offset + 12], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset3 + 1], buffer[offset + 13], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset3 + 2], buffer[offset + 14], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset3 + 3], buffer[offset + 15], Cb, Cr);
rasterOffset += 4;
rasterOffset1 += 4;
rasterOffset2 += 4;
rasterOffset3 += 4;
offset += 18;
}
while (--x != 0);
rasterOffset += incr;
rasterOffset1 += incr;
rasterOffset2 += incr;
rasterOffset3 += incr;
offset += bufferShift;
}
}
else
{
while (height > 0)
{
for (x = width; x > 0; )
{
int Cb = buffer[offset + 16];
int Cr = buffer[offset + 17];
bool h_goOn = false;
bool x_goOn = false;
// order of if's is important
if (x < 1 || x > 3)
{
// order of if's is important
h_goOn = false;
if (height < 1 || height > 3)
{
img.YCbCrtoRGB(out raster[rasterOffset3 + 3], buffer[offset + 15], Cb, Cr);
h_goOn = true;
}
if (height == 3 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset2 + 3], buffer[offset + 11], Cb, Cr);
h_goOn = true;
}
if (height == 2 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset1 + 3], buffer[offset + 7], Cb, Cr);
h_goOn = true;
}
if (height == 1 || h_goOn)
img.YCbCrtoRGB(out raster[rasterOffset + 3], buffer[offset + 3], Cb, Cr);
x_goOn = true;
}
if (x == 3 || x_goOn)
{
// order of if's is important
h_goOn = false;
if (height < 1 || height > 3)
{
img.YCbCrtoRGB(out raster[rasterOffset3 + 2], buffer[offset + 14], Cb, Cr);
h_goOn = true;
}
if (height == 3 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset2 + 2], buffer[offset + 10], Cb, Cr);
h_goOn = true;
}
if (height == 2 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset1 + 2], buffer[offset + 6], Cb, Cr);
h_goOn = true;
}
if (height == 1 || h_goOn)
img.YCbCrtoRGB(out raster[rasterOffset + 2], buffer[offset + 2], Cb, Cr);
x_goOn = true;
}
if (x == 2 || x_goOn)
{
// order of if's is important
h_goOn = false;
if (height < 1 || height > 3)
{
img.YCbCrtoRGB(out raster[rasterOffset3 + 1], buffer[offset + 13], Cb, Cr);
h_goOn = true;
}
if (height == 3 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset2 + 1], buffer[offset + 9], Cb, Cr);
h_goOn = true;
}
if (height == 2 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset1 + 1], buffer[offset + 5], Cb, Cr);
h_goOn = true;
}
if (height == 1 || h_goOn)
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
}
if (x == 1 || x_goOn)
{
// order of if's is important
h_goOn = false;
if (height < 1 || height > 3)
{
img.YCbCrtoRGB(out raster[rasterOffset3 + 0], buffer[offset + 12], Cb, Cr);
h_goOn = true;
}
if (height == 3 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset2 + 0], buffer[offset + 8], Cb, Cr);
h_goOn = true;
}
if (height == 2 || h_goOn)
{
img.YCbCrtoRGB(out raster[rasterOffset1 + 0], buffer[offset + 4], Cb, Cr);
h_goOn = true;
}
if (height == 1 || h_goOn)
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
}
if (x < 4)
{
rasterOffset += x;
rasterOffset1 += x;
rasterOffset2 += x;
rasterOffset3 += x;
x = 0;
}
else
{
rasterOffset += 4;
rasterOffset1 += 4;
rasterOffset2 += 4;
rasterOffset3 += 4;
x -= 4;
}
offset += 18;
}
if (height <= 4)
break;
height -= 4;
rasterOffset += incr;
rasterOffset1 += incr;
rasterOffset2 += incr;
rasterOffset3 += incr;
offset += bufferShift;
}
}
}
/// <summary>
/// 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB
/// </summary>
private static void putcontig8bitYCbCr21tile(
TiffRgbaImage img, int[] raster, int rasterOffset, int rasterShift,
int x, int y, int width, int height, byte[] buffer, int offset, int bufferShift)
{
bufferShift = (bufferShift * 4) / 2;
do
{
x = width >> 1;
do
{
int Cb = buffer[offset + 2];
int Cr = buffer[offset + 3];
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
img.YCbCrtoRGB(out raster[rasterOffset + 1], buffer[offset + 1], Cb, Cr);
rasterOffset += 2;
offset += 4;
}
while (--x != 0);
if ((width & 1) != 0)
{
int Cb = buffer[offset + 2];
int Cr = buffer[offset + 3];
img.YCbCrtoRGB(out raster[rasterOffset + 0], buffer[offset + 0], Cb, Cr);
rasterOffset += 1;
offset += 4;
}
rasterOffset += rasterShift;
offset += bufferShift;
}
while (--height != 0);
}