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WebPPictureDistortion: fix big-endian results order

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match the little-endian BGRA order

Change-Id: Ie8f1ae3100fac478bae13e53121a6af5b2443374
This commit is contained in:
James Zern 2018-02-19 13:19:41 -08:00
parent 9df64e28dd
commit a7fe9412d0
1 changed files with 13 additions and 2 deletions
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15
src/enc/picture_psnr_enc.c
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@ -18,6 +18,7 @@
#include <math.h>
#include <stdlib.h>
#include "src/dsp/dsp.h"
#include "src/enc/vp8i_enc.h"
#include "src/utils/utils.h"
@ -169,6 +170,12 @@ int WebPPlaneDistortion(const uint8_t* src, size_t src_stride,
return 1;
}
#ifdef WORDS_BIGENDIAN
#define BLUE_OFFSET 3 // uint32_t 0x000000ff is 0x00,00,00,ff in memory
#else
#define BLUE_OFFSET 0 // uint32_t 0x000000ff is 0xff,00,00,00 in memory
#endif
int WebPPictureDistortion(const WebPPicture* src, const WebPPicture* ref,
int type, float results[5]) {
int w, h, c;
@ -195,8 +202,10 @@ int WebPPictureDistortion(const WebPPicture* src, const WebPPicture* ref,
float distortion;
const size_t stride0 = 4 * (size_t)p0.argb_stride;
const size_t stride1 = 4 * (size_t)p1.argb_stride;
if (!WebPPlaneDistortion((const uint8_t*)p0.argb + c, stride0,
(const uint8_t*)p1.argb + c, stride1,
// results are reported as BGRA
const int offset = c ^ BLUE_OFFSET;
if (!WebPPlaneDistortion((const uint8_t*)p0.argb + offset, stride0,
(const uint8_t*)p1.argb + offset, stride1,
w, h, 4, type, &distortion, results + c)) {
goto Error;
}
@ -214,6 +223,8 @@ int WebPPictureDistortion(const WebPPicture* src, const WebPPicture* ref,
return ok;
}
#undef BLUE_OFFSET
#else // defined(WEBP_DISABLE_STATS)
int WebPPlaneDistortion(const uint8_t* src, size_t src_stride,
const uint8_t* ref, size_t ref_stride,