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add dsp functions for SmartYUV

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+ SSE2 implementation

Change-Id: I5cfdb62d68b5a95899241a097d3a2f697fbc590e
This commit is contained in:
Pascal Massimino
2016-11-10 14:24:01 -08:00
parent 22efabddb4
commit 9ac063c37f
4 changed files with 195 additions and 24 deletions
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57
src/dsp/yuv.c
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@ -13,6 +13,8 @@
#include "./yuv.h"
#include <stdlib.h>
#if defined(WEBP_YUV_USE_TABLE)
static int done = 0;
@ -244,6 +246,48 @@ void WebPConvertRGBA32ToUV_C(const uint16_t* rgb,
//-----------------------------------------------------------------------------
#define MAX_Y ((1 << 10) - 1) // 10b precision over 16b-arithmetic
static uint16_t clip_y(int v) {
return (v < 0) ? 0 : (v > MAX_Y) ? MAX_Y : (uint16_t)v;
}
static uint64_t SmartYUVUpdateY_C(const uint16_t* ref, const uint16_t* src,
uint16_t* dst, int len) {
uint64_t diff = 0;
int i;
for (i = 0; i < len; ++i) {
const int diff_y = ref[i] - src[i];
const int new_y = (int)dst[i] + diff_y;
dst[i] = clip_y(new_y);
diff += (uint64_t)abs(diff_y);
}
return diff;
}
static void SmartYUVUpdateRGB_C(const int16_t* ref, const int16_t* src,
int16_t* dst, int len) {
int i;
for (i = 0; i < len; ++i) {
const int diff_uv = (int)ref[i] - src[i];
dst[i] += diff_uv;
}
}
static void SmartYUVFilterRow_C(const int16_t* A, const int16_t* B, int len,
const uint16_t* best_y, uint16_t* out) {
int i;
for (i = 0; i < len; ++i, ++A, ++B) {
const int v0 = (A[0] * 9 + A[1] * 3 + B[0] * 3 + B[1] + 8) >> 4;
const int v1 = (A[1] * 9 + A[0] * 3 + B[1] * 3 + B[0] + 8) >> 4;
out[2 * i + 0] = clip_y(best_y[2 * i + 0] + v0);
out[2 * i + 1] = clip_y(best_y[2 * i + 1] + v1);
}
}
#undef MAX_Y
//-----------------------------------------------------------------------------
void (*WebPConvertRGB24ToY)(const uint8_t* rgb, uint8_t* y, int width);
void (*WebPConvertBGR24ToY)(const uint8_t* bgr, uint8_t* y, int width);
void (*WebPConvertRGBA32ToUV)(const uint16_t* rgb,
@ -253,10 +297,18 @@ void (*WebPConvertARGBToY)(const uint32_t* argb, uint8_t* y, int width);
void (*WebPConvertARGBToUV)(const uint32_t* argb, uint8_t* u, uint8_t* v,
int src_width, int do_store);
uint64_t (*WebPSmartYUVUpdateY)(const uint16_t* ref, const uint16_t* src,
uint16_t* dst, int len);
void (*WebPSmartYUVUpdateRGB)(const int16_t* ref, const int16_t* src,
int16_t* dst, int len);
void (*WebPSmartYUVFilterRow)(const int16_t* A, const int16_t* B, int len,
const uint16_t* best_y, uint16_t* out);
static volatile VP8CPUInfo rgba_to_yuv_last_cpuinfo_used =
(VP8CPUInfo)&rgba_to_yuv_last_cpuinfo_used;
extern void WebPInitConvertARGBToYUVSSE2(void);
extern void WebPInitSmartYUVSSE2(void);
WEBP_TSAN_IGNORE_FUNCTION void WebPInitConvertARGBToYUV(void) {
if (rgba_to_yuv_last_cpuinfo_used == VP8GetCPUInfo) return;
@ -269,10 +321,15 @@ WEBP_TSAN_IGNORE_FUNCTION void WebPInitConvertARGBToYUV(void) {
WebPConvertRGBA32ToUV = WebPConvertRGBA32ToUV_C;
WebPSmartYUVUpdateY = SmartYUVUpdateY_C;
WebPSmartYUVUpdateRGB = SmartYUVUpdateRGB_C;
WebPSmartYUVFilterRow = SmartYUVFilterRow_C;
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_SSE2)
if (VP8GetCPUInfo(kSSE2)) {
WebPInitConvertARGBToYUVSSE2();
WebPInitSmartYUVSSE2();
}
#endif // WEBP_USE_SSE2
}