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Filled with some more code. The conversion within the same colour

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space and be between black/white and RGB should now be correct
and faster.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@27013 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Fred Kiefer 2008-11-06 09:23:10 +00:00
parent 39f911eae7
commit 99acf8e220
2 changed files with 246 additions and 4 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2008-11-06 Fred Kiefer <FredKiefer@gmx.de>
* Source/NSBitmapImageRep.m (-_convertToFormatBitsPerSample:...):
Filled with some more code. The conversion within the same colour
space and be between black/white and RGB should now be correct and
faster.
2008-11-01 21:35-EDT Gregory John Casamento <greg_casamento@yahoo.com>
* Source/NSWindow.m: Reverted a previous change to miniaturize.

243
Source/NSBitmapImageRep.m
View file

@ -2155,17 +2155,251 @@ _set_bit_value(unsigned char *base, long msb_off, int bit_width,
IMP setP = [new methodForSelector: setPSel];
unsigned int pixelData[5];
int x, y;
float _scale;
float scale;
NSDebugLLog(@"NSImage", @"Converting %@ bitmap data", colorSpaceName);
if (_bitsPerSample != bps)
{
_scale = (float)((1 << _bitsPerSample) - 1);
scale = (float)((1 << bps) - 1);
}
else
{
_scale = 1.0;
scale = 1.0;
}
for (y = 0; y < _pixelsHigh; y++)
{
for (x = 0; x < _pixelsWide; x++)
{
//[self getPixel: pixelData atX: x y: y];
getP(self, getPSel, pixelData, x, y);
// FIXME: Here we may need to resort, scale, pre-multiply
// the pixel data and add alpha. Or do the opposite :-)
unsigned int iv[4], ia;
float fv[4], fa;
int i;
//[self getPixel: pixelData atX: x y: y];
getP(self, getPSel, pixelData, x, y);
if (_hasAlpha)
{
// This order depends on the bitmap format
if (_format & NSAlphaFirstBitmapFormat)
{
ia = pixelData[0];
for (i = 0; i < _numColors - 1; i++)
{
iv[i] = pixelData[i + 1];
}
}
else
{
for (i = 0; i < _numColors - 1; i++)
{
iv[i] = pixelData[i];
}
ia = pixelData[_numColors - 1];
}
// Scale to [0.0 ... 1.0]
for (i = 0; i < _numColors - 1; i++)
{
fv[i] = iv[i] / _scale;
}
fa = ia / _scale;
if ((_format & NSAlphaNonpremultipliedBitmapFormat) !=
(bitmapFormat & NSAlphaNonpremultipliedBitmapFormat))
{
if (_format & NSAlphaNonpremultipliedBitmapFormat)
{
for (i = 0; i < _numColors - 1; i++)
{
fv[i] = fv[i] * fa;
}
}
else
{
for (i = 0; i < _numColors - 1; i++)
{
fv[i] = fv[i] / fa;
}
}
}
}
else
{
for (i = 0; i < _numColors; i++)
{
iv[i] = pixelData[i];
}
// Scale to [0.0 ... 1.0]
for (i = 0; i < _numColors; i++)
{
fv[i] = iv[i] / _scale;
}
fa = 1.0;
}
if (alpha)
{
// Scale from [0.0 ... 1.0]
for (i = 0; i < _numColors; i++)
{
iv[i] = fv[i] * scale;
}
ia = fa * scale;
if (bitmapFormat & NSAlphaFirstBitmapFormat)
{
pixelData[0] = ia;
for (i = 0; i < spp - 1; i++)
{
pixelData[i + 1] = iv[i];
}
}
else
{
for (i = 0; i < spp - 1; i++)
{
pixelData[i] = iv[i];
}
pixelData[spp -1] = ia;
}
}
else
{
// Scale from [0.0 ... 1.0]
for (i = 0; i < spp; i++)
{
pixelData[i] = fv[i] * scale;
}
}
//[new setPixel: pixelData atX: x y: y];
setP(new, setPSel, pixelData, x, y);
}
}
}
else if (([colorSpaceName isEqualToString: NSDeviceRGBColorSpace] ||
[colorSpaceName isEqualToString: NSCalibratedRGBColorSpace])
&& ([_colorSpace isEqualToString: NSCalibratedWhiteColorSpace] ||
[_colorSpace isEqualToString: NSCalibratedBlackColorSpace] ||
[_colorSpace isEqualToString: NSDeviceWhiteColorSpace] ||
[_colorSpace isEqualToString: NSDeviceBlackColorSpace]))
{
SEL getPSel = @selector(getPixel:atX:y:);
SEL setPSel = @selector(setPixel:atX:y:);
IMP getP = [self methodForSelector: getPSel];
IMP setP = [new methodForSelector: setPSel];
unsigned int pixelData[4];
int x, y;
float _scale;
float scale;
int max = (1 << bps) - 1;
BOOL isWhite = [_colorSpace isEqualToString: NSCalibratedWhiteColorSpace]
|| [_colorSpace isEqualToString: NSDeviceWhiteColorSpace];
NSDebugLLog(@"NSImage", @"Converting black/white bitmap data");
if (_bitsPerSample != bps)
{
_scale = (float)((1 << _bitsPerSample) - 1);
scale = (float)((1 << bps) - 1);
}
else
{
_scale = 1.0;
scale = 1.0;
}
for (y = 0; y < _pixelsHigh; y++)
{
for (x = 0; x < _pixelsWide; x++)
{
unsigned int iv, ia;
float fv, fa;
//[self getPixel: pixelData atX: x y: y];
getP(self, getPSel, pixelData, x, y);
if (_hasAlpha)
{
// This order depends on the bitmap format
if (_format & NSAlphaFirstBitmapFormat)
{
ia = pixelData[0];
if (isWhite)
iv = pixelData[1];
else
iv = max - pixelData[1];
}
else
{
if (isWhite)
iv = pixelData[0];
else
iv = max - pixelData[0];
ia = pixelData[1];
}
// Scale to [0.0 ... 1.0]
fv = iv / _scale;
fa = ia / _scale;
if ((_format & NSAlphaNonpremultipliedBitmapFormat) !=
(bitmapFormat & NSAlphaNonpremultipliedBitmapFormat))
{
if (_format & NSAlphaNonpremultipliedBitmapFormat)
{
fv = fv * fa;
}
else
{
fv = fv / fa;
}
}
}
else
{
if (isWhite)
iv = pixelData[0];
else
iv = max - pixelData[0];
// Scale to [0.0 ... 1.0]
fv = iv / _scale;
fa = 1.0;
}
if (alpha)
{
// Scale from [0.0 ... 1.0]
iv = fv * scale;
ia = fa * scale;
if (bitmapFormat & NSAlphaFirstBitmapFormat)
{
pixelData[0] = ia;
pixelData[1] = iv;
pixelData[2] = iv;
pixelData[3] = iv;
}
else
{
pixelData[0] = iv;
pixelData[1] = iv;
pixelData[2] = iv;
pixelData[3] = ia;
}
}
else
{
// Scale from [0.0 ... 1.0]
iv = fv * scale;
pixelData[0] = iv;
pixelData[1] = iv;
pixelData[2] = iv;
}
//[new setPixel: pixelData atX: x y: y];
setP(new, setPSel, pixelData, x, y);
@ -2180,6 +2414,7 @@ _set_bit_value(unsigned char *base, long msb_off, int bit_width,
IMP setC = [new methodForSelector: setCSel];
int i, j;
NSDebugLLog(@"NSImage", @"Slow converting %@ bitmap data", colorSpaceName);
for (j = 0; j < _pixelsHigh; j++)
{
CREATE_AUTORELEASE_POOL(pool);