dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-07-14 21:09:55 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

SSE optimization for vector mismatch.

Browse Source 
Change-Id: I564b822033b59d86635230f29ed6197e306a2c4f
This commit is contained in:
Vincent Rabaud
2016-01-07 17:23:48 +01:00
parent 7db53831a9
commit 8ce975ac82
4 changed files with 78 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/dsp/lossless_enc.c
View File

@ -1053,6 +1053,17 @@ void VP8LColorSpaceTransform(int width, int height, int bits, int quality,
}
//------------------------------------------------------------------------------
static int VectorMismatch(const uint32_t* const array1,
const uint32_t* const array2, int length) {
int match_len = 0;
while (match_len < length && array1[match_len] == array2[match_len]) {
++match_len;
}
return match_len;
}
// Bundles multiple (1, 2, 4 or 8) pixels into a single pixel.
void VP8LBundleColorMap(const uint8_t* const row, int width,
int xbits, uint32_t* const dst) {
@ -1149,6 +1160,8 @@ GetEntropyUnrefinedHelperFunc VP8LGetEntropyUnrefinedHelper;
VP8LHistogramAddFunc VP8LHistogramAdd;
VP8LVectorMismatchFunc VP8LVectorMismatch;
extern void VP8LEncDspInitSSE2(void);
extern void VP8LEncDspInitSSE41(void);
extern void VP8LEncDspInitNEON(void);
@ -1181,6 +1194,8 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInit(void) {
VP8LHistogramAdd = HistogramAdd;
VP8LVectorMismatch = VectorMismatch;
// If defined, use CPUInfo() to overwrite some pointers with faster versions.
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_SSE2)