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Const correctness patch for SDL_MapRGB and SDL_MapRGBA.

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Fixes Bugzilla #421.

--HG--
branch : SDL-1.2
This commit is contained in:
Ryan C. Gordon
2007-04-04 09:40:40 +00:00
parent 0dbf763582
commit e865281b0e
2 changed files with 11 additions and 5 deletions
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8
include/SDL_video.h
View File

@@ -447,13 +447,15 @@ extern DECLSPEC int SDLCALL SDL_SetPalette(SDL_Surface *surface, int flags,
* Maps an RGB triple to an opaque pixel value for a given pixel format
*/
extern DECLSPEC Uint32 SDLCALL SDL_MapRGB
(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b);
(const SDL_PixelFormat * const format,
const Uint8 r, const Uint8 g, const Uint8 b);
/*
* Maps an RGBA quadruple to a pixel value for a given pixel format
*/
extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA(SDL_PixelFormat *format,
Uint8 r, Uint8 g, Uint8 b, Uint8 a);
extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA
(const SDL_PixelFormat * const format,
const Uint8 r, const Uint8 g, const Uint8 b, const Uint8 a);
/*
* Maps a pixel value into the RGB components for a given pixel format

8
src/video/SDL_pixels.c
View File

@@ -337,7 +337,9 @@ Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b)
}
/* Find the opaque pixel value corresponding to an RGB triple */
Uint32 SDL_MapRGB(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b)
Uint32 SDL_MapRGB
(const SDL_PixelFormat * const format,
const Uint8 r, const Uint8 g, const Uint8 b)
{
if ( format->palette == NULL ) {
return (r >> format->Rloss) << format->Rshift
@@ -350,7 +352,9 @@ Uint32 SDL_MapRGB(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b)
}
/* Find the pixel value corresponding to an RGBA quadruple */
Uint32 SDL_MapRGBA(SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
Uint32 SDL_MapRGBA
(const SDL_PixelFormat * const format,
const Uint8 r, const Uint8 g, const Uint8 b, const Uint8 a)
{
if ( format->palette == NULL ) {
return (r >> format->Rloss) << format->Rshift