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utils.[hc]: s/MAX_COLOR_COUNT/MAX_PALETTE_SIZE/

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MAX_COLOR_COUNT was just a synonym and its use in the header was a bit
strange given the visibility of that define.

Change-Id: I536964ddc14a0c48263191b6afb80695b5a038e6
This commit is contained in:
James Zern 2016-06-16 23:14:30 -07:00
parent 5a48fcd8a1
commit e6ac450cbd
2 changed files with 7 additions and 9 deletions
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8
src/utils/utils.c
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@ -239,8 +239,7 @@ void WebPCopyPixels(const WebPPicture* const src, WebPPicture* const dst) {
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
#define MAX_COLOR_COUNT MAX_PALETTE_SIZE #define COLOR_HASH_SIZE (MAX_PALETTE_SIZE * 4)
#define COLOR_HASH_SIZE (MAX_COLOR_COUNT * 4)
#define COLOR_HASH_RIGHT_SHIFT 22 // 32 - log2(COLOR_HASH_SIZE). #define COLOR_HASH_RIGHT_SHIFT 22 // 32 - log2(COLOR_HASH_SIZE).
int WebPGetColorPalette(const WebPPicture* const pic, uint32_t* const palette) { int WebPGetColorPalette(const WebPPicture* const pic, uint32_t* const palette) {
@ -270,8 +269,8 @@ int WebPGetColorPalette(const WebPPicture* const pic, uint32_t* const palette) {
colors[key] = last_pix; colors[key] = last_pix;
in_use[key] = 1; in_use[key] = 1;
++num_colors; ++num_colors;
if (num_colors > MAX_COLOR_COUNT) { if (num_colors > MAX_PALETTE_SIZE) {
return MAX_COLOR_COUNT + 1; // Exact count not needed. return MAX_PALETTE_SIZE + 1; // Exact count not needed.
} }
break; break;
} else if (colors[key] == last_pix) { } else if (colors[key] == last_pix) {
@ -298,7 +297,6 @@ int WebPGetColorPalette(const WebPPicture* const pic, uint32_t* const palette) {
return num_colors; return num_colors;
} }
#undef MAX_COLOR_COUNT
#undef COLOR_HASH_SIZE #undef COLOR_HASH_SIZE
#undef COLOR_HASH_RIGHT_SHIFT #undef COLOR_HASH_RIGHT_SHIFT

8
src/utils/utils.h
View File

@ -164,12 +164,12 @@ WEBP_EXTERN(void) WebPCopyPixels(const struct WebPPicture* const src,
// Unique colors. // Unique colors.
// Returns count of unique colors in 'pic', assuming pic->use_argb is true. // Returns count of unique colors in 'pic', assuming pic->use_argb is true.
// If the unique color count is more than MAX_COLOR_COUNT, returns // If the unique color count is more than MAX_PALETTE_SIZE, returns
// MAX_COLOR_COUNT+1. // MAX_PALETTE_SIZE+1.
// If 'palette' is not NULL and number of unique colors is less than or equal to // If 'palette' is not NULL and number of unique colors is less than or equal to
// MAX_COLOR_COUNT, also outputs the actual unique colors into 'palette'. // MAX_PALETTE_SIZE, also outputs the actual unique colors into 'palette'.
// Note: 'palette' is assumed to be an array already allocated with at least // Note: 'palette' is assumed to be an array already allocated with at least
// MAX_COLOR_COUNT elements. // MAX_PALETTE_SIZE elements.
WEBP_EXTERN(int) WebPGetColorPalette(const struct WebPPicture* const pic, WEBP_EXTERN(int) WebPGetColorPalette(const struct WebPPicture* const pic,
uint32_t* const palette); uint32_t* const palette);