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make alpha unfilter work in-place

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* remove a malloc
* remove the unused 'bpp' argument from filter/unfilter functions

Change-Id: I28d78baaaddc20f1d5a3bb2bd0b4e96a12a920d8
This commit is contained in:
skal
2013-03-14 20:26:39 +01:00
parent 14ef5005a2
commit 0aef3ebdea
4 changed files with 44 additions and 55 deletions
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9
src/utils/filters.h
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@ -30,18 +30,19 @@ typedef enum {
} WEBP_FILTER_TYPE;
typedef void (*WebPFilterFunc)(const uint8_t* in, int width, int height,
int bpp, int stride, uint8_t* out);
int stride, uint8_t* out);
typedef void (*WebPUnfilterFunc)(int width, int height, int stride,
uint8_t* data);
// Filter the given data using the given predictor.
// 'in' corresponds to a 2-dimensional pixel array of size (stride * height)
// in raster order.
// 'bpp' is number of bytes per pixel, and
// 'stride' is number of bytes per scan line (with possible padding).
// 'out' should be pre-allocated.
extern const WebPFilterFunc WebPFilters[WEBP_FILTER_LAST];
// Reconstruct the original data from the given filtered data.
extern const WebPFilterFunc WebPUnfilters[WEBP_FILTER_LAST];
// In-place reconstruct the original data from the given filtered data.
extern const WebPUnfilterFunc WebPUnfilters[WEBP_FILTER_LAST];
// Fast estimate of a potentially good filter.
extern WEBP_FILTER_TYPE EstimateBestFilter(const uint8_t* data,