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wasm: Add VFilter8 and HFilter8

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BUG=webp:352

Change-Id: Ic43eb5edd7e2508d2975c8f4f72cdba60c4b70f7
This commit is contained in:
Scott LaVarnway 2017-07-07 15:23:41 -07:00
parent 9eceff25c0
commit cd01fc3944
1 changed files with 72 additions and 0 deletions
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72
src/dsp/dec_wasm.c
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@ -738,6 +738,30 @@ static WEBP_INLINE void Store16x4(const int8x16* const p1,
memcpy(&e4, &(p)[3 * stride], 16); \
}
#define LOADUV_H_EDGE(p, u, v, stride) \
do { \
int8x16 U; \
int8x16 V; \
memcpy(&U, &(u)[(stride)], 8); \
memcpy(&V, &(v)[(stride)], 8); \
p = _unpacklo_epi64((int32x4)U, (int32x4)V); \
} while (0)
#define LOADUV_H_EDGES4(u, v, stride, e1, e2, e3, e4) \
{ \
LOADUV_H_EDGE(e1, u, v, 0 * stride); \
LOADUV_H_EDGE(e2, u, v, 1 * stride); \
LOADUV_H_EDGE(e3, u, v, 2 * stride); \
LOADUV_H_EDGE(e4, u, v, 3 * stride); \
}
#define STOREUV(p, u, v, stride) \
{ \
memcpy(&u[(stride)], &p, 8); \
p = _unpackhi_epi64((int32x4)p, (int32x4)p); \
memcpy(&v[(stride)], &p, 8); \
}
static WEBP_INLINE void ComplexMask(const int8x16* const p1,
const int8x16* const p0,
const int8x16* const q0,
@ -860,6 +884,52 @@ static void HFilter16i(uint8_t* p, int stride,
}
}
// 8-pixels wide variant, for chroma filtering
static void VFilter8(uint8_t* u, uint8_t* v, int stride, int thresh,
int ithresh, int hev_thresh) {
int8x16 mask;
int8x16 t1, p2, p1, p0, q0, q1, q2;
// Load p3, p2, p1, p0
LOADUV_H_EDGES4(u - 4 * stride, v - 4 * stride, stride, t1, p2, p1, p0);
MAX_DIFF1(t1, p2, p1, p0, mask);
// Load q0, q1, q2, q3
LOADUV_H_EDGES4(u, v, stride, q0, q1, q2, t1);
MAX_DIFF2(t1, q2, q1, q0, mask);
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
DoFilter6(&p2, &p1, &p0, &q0, &q1, &q2, &mask, hev_thresh);
// Store
STOREUV(p2, u, v, -3 * stride);
STOREUV(p1, u, v, -2 * stride);
STOREUV(p0, u, v, -1 * stride);
STOREUV(q0, u, v, 0 * stride);
STOREUV(q1, u, v, 1 * stride);
STOREUV(q2, u, v, 2 * stride);
}
static void HFilter8(uint8_t* u, uint8_t* v, int stride, int thresh,
int ithresh, int hev_thresh) {
int8x16 mask;
int8x16 p3, p2, p1, p0, q0, q1, q2, q3;
uint8_t* const tu = u - 4;
uint8_t* const tv = v - 4;
Load16x4(tu, tv, stride, &p3, &p2, &p1, &p0);
MAX_DIFF1(p3, p2, p1, p0, mask);
Load16x4(u, v, stride, &q0, &q1, &q2, &q3);
MAX_DIFF2(q3, q2, q1, q0, mask);
ComplexMask(&p1, &p0, &q0, &q1, thresh, ithresh, &mask);
DoFilter6(&p2, &p1, &p0, &q0, &q1, &q2, &mask, hev_thresh);
Store16x4(&p3, &p2, &p1, &p0, tu, tv, stride);
Store16x4(&q0, &q1, &q2, &q3, u, v, stride);
}
//------------------------------------------------------------------------------
// 4x4 predictions
@ -1257,6 +1327,8 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitWASM(void) {
VP8VFilter16 = VFilter16;
VP8HFilter16 = HFilter16;
VP8VFilter8 = VFilter8;
VP8HFilter8 = HFilter8;
VP8VFilter16i = VFilter16i;
VP8HFilter16i = HFilter16i;