Autogenerated full mask checks for pixel format match

662a1c6c · Sam Lantinga · 009af96c · 662a1c6c
Commit 662a1c6c authored Feb 19, 2011 by Sam Lantinga
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Showing with 133 additions and 70 deletions

SDL_pixels.c src/video/SDL_pixels.c +133 -70

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--- a/src/video/SDL_pixels.c
+++ b/src/video/SDL_pixels.c
@@ -236,60 +236,107 @@ SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
 {
    switch (bpp) {
    case 8:
-        switch (Rmask) {
+        if (Rmask == 0) {
-        case 0:
            return SDL_PIXELFORMAT_INDEX8;
-        case 0xE0:
+        }
-            return SDL_PIXELFORMAT_RGB332;
+        if (Rmask == 0xE0 &&
+            Gmask == 0x1C &&
+            Bmask == 0x03 &&
+            Amask == 0x00) {
+            return SDL_PIXELFORMAT_RGB332
        }
        break;
    case 12:
-        switch (Rmask) {
+        if (Rmask == 0) {
-        case 0x0F00:
+            return SDL_PIXELFORMAT_RGB444
-            return SDL_PIXELFORMAT_RGB444;
+        }
+        if (Rmask == 0x0F00 &&
+            Gmask == 0x00F0 &&
+            Bmask == 0x000F &&
+            Amask == 0x0000) {
+            return SDL_PIXELFORMAT_RGB444
        }
        break;
    case 15:
        if (Rmask == 0) {
            return SDL_PIXELFORMAT_RGB555;
        }
-        if (Rmask == 0x7C00 && Bmask == 0x001F) {
+        /* Fall through to 16-bit checks */
-            return SDL_PIXELFORMAT_RGB555;
-        }
-        if (Rmask == 0x001F && Bmask == 0x7C00) {
-            return SDL_PIXELFORMAT_BGR555;
-        }
-        break;
    case 16:
-        switch (Rmask) {
+        if (Rmask == 0) {
-        case 0:
            return SDL_PIXELFORMAT_RGB565;
-        case 0xF000:
+        }
-            return SDL_PIXELFORMAT_RGBA4444;
+        if (Rmask == 0x7C00 &&
-        case 0x0F00:
+            Gmask == 0x03E0 &&
-            return SDL_PIXELFORMAT_ARGB4444;
+            Bmask == 0x001F &&
-        case 0x00F0:
+            Amask == 0x0000) {
-            return SDL_PIXELFORMAT_BGRA4444;
+            return SDL_PIXELFORMAT_RGB555
-        case 0x000F:
+        }
-            return SDL_PIXELFORMAT_ABGR4444;
+        if (Rmask == 0x001F &&
-        case 0xF800:
+            Gmask == 0x03E0 &&
-            if (Bmask == 0x001F) {
+            Bmask == 0x7C00 &&
-                return SDL_PIXELFORMAT_RGB565;
+            Amask == 0x0000) {
-            }
+            return SDL_PIXELFORMAT_BGR555
-            break;
+        }
-        case 0x7C00:
+        if (Rmask == 0x0F00 &&
-            if (Bmask == 0x001F) {
+            Gmask == 0x00F0 &&
-                return SDL_PIXELFORMAT_RGB555;
+            Bmask == 0x000F &&
-            }
+            Amask == 0xF000) {
-            break;
+            return SDL_PIXELFORMAT_ARGB4444
-        case 0x001F:
+        }
-            if (Bmask == 0xF800) {
+        if (Rmask == 0xF000 &&
-                return SDL_PIXELFORMAT_BGR565;
+            Gmask == 0x0F00 &&
-            }
+            Bmask == 0x00F0 &&
-            if (Bmask == 0x7C00) {
+            Amask == 0x000F) {
-                return SDL_PIXELFORMAT_BGR555;
+            return SDL_PIXELFORMAT_RGBA4444
-            }
+        }
-            break;
+        if (Rmask == 0x000F &&
+            Gmask == 0x00F0 &&
+            Bmask == 0x0F00 &&
+            Amask == 0xF000) {
+            return SDL_PIXELFORMAT_ABGR4444
+        }
+        if (Rmask == 0x00F0 &&
+            Gmask == 0x0F00 &&
+            Bmask == 0xF000 &&
+            Amask == 0x000F) {
+            return SDL_PIXELFORMAT_BGRA4444
+        }
+        if (Rmask == 0x7C00 &&
+            Gmask == 0x03E0 &&
+            Bmask == 0x001F &&
+            Amask == 0x8000) {
+            return SDL_PIXELFORMAT_ARGB1555
+        }
+        if (Rmask == 0xF800 &&
+            Gmask == 0x07C0 &&
+            Bmask == 0x003E &&
+            Amask == 0x0001) {
+            return SDL_PIXELFORMAT_RGBA5551
+        }
+        if (Rmask == 0x001F &&
+            Gmask == 0x03E0 &&
+            Bmask == 0x7C00 &&
+            Amask == 0x8000) {
+            return SDL_PIXELFORMAT_ABGR1555
+        }
+        if (Rmask == 0x003E &&
+            Gmask == 0x07C0 &&
+            Bmask == 0xF800 &&
+            Amask == 0x0001) {
+            return SDL_PIXELFORMAT_BGRA5551
+        }
+        if (Rmask == 0xF800 &&
+            Gmask == 0x07E0 &&
+            Bmask == 0x001F &&
+            Amask == 0x0000) {
+            return SDL_PIXELFORMAT_RGB565
+        }
+        if (Rmask == 0x001F &&
+            Gmask == 0x07E0 &&
+            Bmask == 0xF800 &&
+            Amask == 0x0000) {
+            return SDL_PIXELFORMAT_BGR565
        }
        break;
    case 24:
@@ -309,34 +356,50 @@ SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
 #endif
        }
    case 32:
-        switch (Rmask) {
+        if (Rmask == 0) {
-        case 0xFF000000:
+            return SDL_PIXELFORMAT_RGB888;
-            if (Amask == 0x000000FF) {
+        }
-                return SDL_PIXELFORMAT_RGBA8888;
+        if (Rmask == 0x00FF0000 &&
-            }
+            Gmask == 0x0000FF00 &&
-            break;
+            Bmask == 0x000000FF &&
-        case 0:
+            Amask == 0x00000000) {
-        case 0x00FF0000:
+            return SDL_PIXELFORMAT_RGB888
-            if (Amask == 0xFF000000) {
+        }
-                return SDL_PIXELFORMAT_ARGB8888;
+        if (Rmask == 0x000000FF &&
-            } else {
+            Gmask == 0x0000FF00 &&
-                return SDL_PIXELFORMAT_RGB888;
+            Bmask == 0x00FF0000 &&
-            }
+            Amask == 0x00000000) {
-            break;
+            return SDL_PIXELFORMAT_BGR888
-        case 0x0000FF00:
+        }
-            if (Amask == 0x000000FF) {
+        if (Rmask == 0x00FF0000 &&
-                return SDL_PIXELFORMAT_BGRA8888;
+            Gmask == 0x0000FF00 &&
-            }
+            Bmask == 0x000000FF &&
-            break;
+            Amask == 0xFF000000) {
-        case 0x000000FF:
+            return SDL_PIXELFORMAT_ARGB8888
-            if (Amask == 0xFF000000) {
+        }
-                return SDL_PIXELFORMAT_ABGR8888;
+        if (Rmask == 0xFF000000 &&
-            } else {
+            Gmask == 0x00FF0000 &&
-                return SDL_PIXELFORMAT_BGR888;
+            Bmask == 0x0000FF00 &&
-            }
+            Amask == 0x000000FF) {
-            break;
+            return SDL_PIXELFORMAT_RGBA8888
-        case 0x3FF00000:
+        }
-            return SDL_PIXELFORMAT_ARGB2101010;
+        if (Rmask == 0x000000FF &&
+            Gmask == 0x0000FF00 &&
+            Bmask == 0x00FF0000 &&
+            Amask == 0xFF000000) {
+            return SDL_PIXELFORMAT_ABGR8888
+        }
+        if (Rmask == 0x0000FF00 &&
+            Gmask == 0x00FF0000 &&
+            Bmask == 0xFF000000 &&
+            Amask == 0x000000FF) {
+            return SDL_PIXELFORMAT_BGRA8888
+        }
+        if (Rmask == 0x3FF00000 &&
+            Gmask == 0x000FFC00 &&
+            Bmask == 0x000003FF &&
+            Amask == 0xC0000000) {
+            return SDL_PIXELFORMAT_ARGB2101010
        }
    }
    return SDL_PIXELFORMAT_UNKNOWN;