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gdiplus: Implement GdipBitmapGetPixel.

This commit is contained in:
Vincent Povirk 2009-09-23 10:41:13 -05:00 committed by Alexandre Julliard
parent e1cb441781
commit 41140a950b
2 changed files with 170 additions and 16 deletions
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166
dlls/gdiplus/image.c
View File

@ -94,21 +94,175 @@ GpStatus WINGDIPAPI GdipBitmapCreateApplyEffect(GpBitmap** inputBitmaps,
return NotImplemented;
}
static inline void getpixel_16bppGrayScale(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*r = *g = *b = row[x*2+1];
*a = 255;
}
static inline void getpixel_16bppRGB555(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
WORD pixel = *((WORD*)(row)+x);
*r = (pixel>>7&0xf8)|(pixel>>12&0x7);
*g = (pixel>>2&0xf8)|(pixel>>6&0x7);
*b = (pixel<<3&0xf8)|(pixel>>2&0x7);
*a = 255;
}
static inline void getpixel_16bppRGB565(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
WORD pixel = *((WORD*)(row)+x);
*r = (pixel>>8&0xf8)|(pixel>>13&0x7);
*g = (pixel>>3&0xfc)|(pixel>>9&0x3);
*b = (pixel<<3&0xf8)|(pixel>>2&0x7);
*a = 255;
}
static inline void getpixel_16bppARGB1555(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
WORD pixel = *((WORD*)(row)+x);
*r = (pixel>>7&0xf8)|(pixel>>12&0x7);
*g = (pixel>>2&0xf8)|(pixel>>6&0x7);
*b = (pixel<<3&0xf8)|(pixel>>2&0x7);
if ((pixel&0x8000) == 0x8000)
*a = 255;
else
*a = 0;
}
static inline void getpixel_24bppRGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*r = row[x*3+2];
*g = row[x*3+1];
*b = row[x*3];
*a = 255;
}
static inline void getpixel_32bppRGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*r = row[x*4+2];
*g = row[x*4+1];
*b = row[x*4];
*a = 255;
}
static inline void getpixel_32bppARGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*r = row[x*4+2];
*g = row[x*4+1];
*b = row[x*4];
*a = row[x*4+3];
}
static inline void getpixel_32bppPARGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*a = row[x*4+3];
if (*a == 0)
*r = *g = *b = 0;
else
{
*r = row[x*4+2] * 255 / *a;
*g = row[x*4+1] * 255 / *a;
*b = row[x*4] * 255 / *a;
}
}
static inline void getpixel_48bppRGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*r = row[x*6+5];
*g = row[x*6+3];
*b = row[x*6+1];
*a = 255;
}
static inline void getpixel_64bppARGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*r = row[x*8+5];
*g = row[x*8+3];
*b = row[x*8+1];
*a = row[x*8+7];
}
static inline void getpixel_64bppPARGB(BYTE *r, BYTE *g, BYTE *b, BYTE *a,
const BYTE *row, UINT x)
{
*a = row[x*8+7];
if (*a == 0)
*r = *g = *b = 0;
else
{
*r = row[x*8+5] * 255 / *a;
*g = row[x*8+3] * 255 / *a;
*b = row[x*8+1] * 255 / *a;
}
}
GpStatus WINGDIPAPI GdipBitmapGetPixel(GpBitmap* bitmap, INT x, INT y,
ARGB *color)
{
static int calls;
BYTE r, g, b, a;
BYTE *row;
TRACE("%p %d %d %p\n", bitmap, x, y, color);
if(!bitmap || !color)
if(!bitmap || !color ||
x < 0 || y < 0 || x >= bitmap->width || y >= bitmap->height)
return InvalidParameter;
if(!(calls++))
FIXME("not implemented\n");
row = bitmap->bits+bitmap->stride*y;
*color = 0xdeadbeef;
switch (bitmap->format)
{
case PixelFormat16bppGrayScale:
getpixel_16bppGrayScale(&r,&g,&b,&a,row,x);
break;
case PixelFormat16bppRGB555:
getpixel_16bppRGB555(&r,&g,&b,&a,row,x);
break;
case PixelFormat16bppRGB565:
getpixel_16bppRGB565(&r,&g,&b,&a,row,x);
break;
case PixelFormat16bppARGB1555:
getpixel_16bppARGB1555(&r,&g,&b,&a,row,x);
break;
case PixelFormat24bppRGB:
getpixel_24bppRGB(&r,&g,&b,&a,row,x);
break;
case PixelFormat32bppRGB:
getpixel_32bppRGB(&r,&g,&b,&a,row,x);
break;
case PixelFormat32bppARGB:
getpixel_32bppARGB(&r,&g,&b,&a,row,x);
break;
case PixelFormat32bppPARGB:
getpixel_32bppPARGB(&r,&g,&b,&a,row,x);
break;
case PixelFormat48bppRGB:
getpixel_48bppRGB(&r,&g,&b,&a,row,x);
break;
case PixelFormat64bppARGB:
getpixel_64bppARGB(&r,&g,&b,&a,row,x);
break;
case PixelFormat64bppPARGB:
getpixel_64bppPARGB(&r,&g,&b,&a,row,x);
break;
default:
FIXME("not implemented for format 0x%x\n", bitmap->format);
return NotImplemented;
}
return NotImplemented;
*color = a<<24|r<<16|g<<8|b;
return Ok;
}
GpStatus WINGDIPAPI GdipBitmapSetPixel(GpBitmap* bitmap, INT x, INT y,

20
dlls/gdiplus/tests/image.c
View File

@ -822,37 +822,37 @@ static void test_getsetpixel(void)
/* out of bounds */
stat = GdipBitmapGetPixel(bitmap, -1, 1, &color);
todo_wine expect(InvalidParameter, stat);
expect(InvalidParameter, stat);
stat = GdipBitmapSetPixel(bitmap, -1, 1, 0);
todo_wine expect(InvalidParameter, stat);
stat = GdipBitmapGetPixel(bitmap, 1, -1, &color);
todo_wine expect(InvalidParameter, stat);
expect(InvalidParameter, stat);
stat = GdipBitmapSetPixel(bitmap, 1, -1, 0);
todo_wine expect(InvalidParameter, stat);
stat = GdipBitmapGetPixel(bitmap, 2, 1, &color);
todo_wine expect(InvalidParameter, stat);
expect(InvalidParameter, stat);
stat = GdipBitmapSetPixel(bitmap, 2, 1, 0);
todo_wine expect(InvalidParameter, stat);
stat = GdipBitmapGetPixel(bitmap, 1, 2, &color);
todo_wine expect(InvalidParameter, stat);
expect(InvalidParameter, stat);
stat = GdipBitmapSetPixel(bitmap, 1, 2, 0);
todo_wine expect(InvalidParameter, stat);
/* valid use */
stat = GdipBitmapGetPixel(bitmap, 1, 1, &color);
todo_wine expect(Ok, stat);
todo_wine expect(0xffffffff, color);
expect(Ok, stat);
expect(0xffffffff, color);
stat = GdipBitmapGetPixel(bitmap, 0, 1, &color);
todo_wine expect(Ok, stat);
todo_wine expect(0xff0000ff, color);
expect(Ok, stat);
expect(0xff0000ff, color);
stat = GdipBitmapSetPixel(bitmap, 1, 1, 0xff676869);
todo_wine expect(Ok, stat);
@ -861,11 +861,11 @@ static void test_getsetpixel(void)
todo_wine expect(Ok, stat);
stat = GdipBitmapGetPixel(bitmap, 1, 1, &color);
todo_wine expect(Ok, stat);
expect(Ok, stat);
todo_wine expect(0xff676869, color);
stat = GdipBitmapGetPixel(bitmap, 0, 0, &color);
todo_wine expect(Ok, stat);
expect(Ok, stat);
todo_wine expect(0xff474849, color);
stat = GdipDisposeImage((GpImage*)bitmap);