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Add WebPReplaceTransparentPixels() in dsp

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with SSE2 implementation.

(Extracted from side experiment)

Change-Id: I62d457fb6643645291cffd6d2d205d4a5ffa4517
This commit is contained in:
Skal
2020-09-05 11:44:59 +02:00
parent 84739717d6
commit 55a080e50a
6 changed files with 49 additions and 22 deletions
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src/dsp/dsp.h
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@@ -638,6 +638,8 @@ extern void (*WebPPackRGB)(const uint8_t* r, const uint8_t* g, const uint8_t* b,
extern int (*WebPHasAlpha8b)(const uint8_t* src, int length);
// This function returns true if src[4*i] contains a value different from 0xff.
extern int (*WebPHasAlpha32b)(const uint8_t* src, int length);
// replaces transparent values in src[] by 'color'.
extern void (*WebPAlphaReplace)(uint32_t* src, int length, uint32_t color);
// To be called first before using the above.
void WebPInitAlphaProcessing(void);