dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2024-12-27 06:08:21 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add MSA optimized encoder Intra16Preds function

Browse Source 
We add the following MSA optimized intrapred 16x16 function:
- Intra16Preds

Change-Id: I89a249e041fbed377cb6a328c0b973add335b980
This commit is contained in:
Parag Salasakar 2016-07-12 14:30:03 +05:30
parent c18787a0e9
commit 7b4b05e0dc
1 changed files with 113 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

113
src/dsp/enc_msa.c
View File

@ -409,6 +409,118 @@ static void Intra4Preds(uint8_t* dst, const uint8_t* top) {
HU4(I4HU4 + dst, top);
}
// luma 16x16 prediction
#define STORE16x16(out, dst) do { \
ST_UB8(out, out, out, out, out, out, out, out, dst + 0 * BPS, BPS); \
ST_UB8(out, out, out, out, out, out, out, out, dst + 8 * BPS, BPS); \
} while (0)
static WEBP_INLINE void VerticalPred16x16(uint8_t* dst, const uint8_t* top) {
if (top != NULL) {
const v16u8 out = LD_UB(top);
STORE16x16(out, dst);
} else {
const v16u8 out = (v16u8)__msa_fill_b(0x7f);
STORE16x16(out, dst);
}
}
static WEBP_INLINE void HorizontalPred16x16(uint8_t* dst,
const uint8_t* left) {
if (left != NULL) {
int j;
for (j = 0; j < 16; j += 4) {
const v16u8 L0 = (v16u8)__msa_fill_b(left[0]);
const v16u8 L1 = (v16u8)__msa_fill_b(left[1]);
const v16u8 L2 = (v16u8)__msa_fill_b(left[2]);
const v16u8 L3 = (v16u8)__msa_fill_b(left[3]);
ST_UB4(L0, L1, L2, L3, dst, BPS);
dst += 4 * BPS;
left += 4;
}
} else {
const v16u8 out = (v16u8)__msa_fill_b(0x81);
STORE16x16(out, dst);
}
}
static WEBP_INLINE void TrueMotion16x16(uint8_t* dst, const uint8_t* left,
const uint8_t* top) {
if (left != NULL) {
if (top != NULL) {
int j;
v8i16 d1, d2;
const v16i8 zero = { 0 };
const v8i16 TL = (v8i16)__msa_fill_h(left[-1]);
const v16u8 T = LD_UB(top);
ILVRL_B2_SH(zero, T, d1, d2);
SUB2(d1, TL, d2, TL, d1, d2);
for (j = 0; j < 16; j += 4) {
v16i8 t0, t1, t2, t3;
v8i16 r0, r1, r2, r3, r4, r5, r6, r7;
const v8i16 L0 = (v8i16)__msa_fill_h(left[j + 0]);
const v8i16 L1 = (v8i16)__msa_fill_h(left[j + 1]);
const v8i16 L2 = (v8i16)__msa_fill_h(left[j + 2]);
const v8i16 L3 = (v8i16)__msa_fill_h(left[j + 3]);
ADD4(d1, L0, d1, L1, d1, L2, d1, L3, r0, r1, r2, r3);
ADD4(d2, L0, d2, L1, d2, L2, d2, L3, r4, r5, r6, r7);
CLIP_SH4_0_255(r0, r1, r2, r3);
CLIP_SH4_0_255(r4, r5, r6, r7);
PCKEV_B4_SB(r4, r0, r5, r1, r6, r2, r7, r3, t0, t1, t2, t3);
ST_SB4(t0, t1, t2, t3, dst, BPS);
dst += 4 * BPS;
}
} else {
HorizontalPred16x16(dst, left);
}
} else {
if (top != NULL) {
VerticalPred16x16(dst, top);
} else {
const v16u8 out = (v16u8)__msa_fill_b(0x81);
STORE16x16(out, dst);
}
}
}
static WEBP_INLINE void DCMode16x16(uint8_t* dst, const uint8_t* left,
const uint8_t* top) {
int DC;
v16u8 out;
if (top != NULL && left != NULL) {
const v16u8 rtop = LD_UB(top);
const v8u16 dctop = __msa_hadd_u_h(rtop, rtop);
const v16u8 rleft = LD_UB(left);
const v8u16 dcleft = __msa_hadd_u_h(rleft, rleft);
const v8u16 dctemp = dctop + dcleft;
DC = HADD_UH_U32(dctemp);
DC = (DC + 16) >> 5;
} else if (left != NULL) { // left but no top
const v16u8 rleft = LD_UB(left);
const v8u16 dcleft = __msa_hadd_u_h(rleft, rleft);
DC = HADD_UH_U32(dcleft);
DC = (DC + DC + 16) >> 5;
} else if (top != NULL) { // top but no left
const v16u8 rtop = LD_UB(top);
const v8u16 dctop = __msa_hadd_u_h(rtop, rtop);
DC = HADD_UH_U32(dctop);
DC = (DC + DC + 16) >> 5;
} else { // no top, no left, nothing.
DC = 0x80;
}
out = (v16u8)__msa_fill_b(DC);
STORE16x16(out, dst);
}
static void Intra16Preds(uint8_t* dst,
const uint8_t* left, const uint8_t* top) {
DCMode16x16(I16DC16 + dst, left, top);
VerticalPred16x16(I16VE16 + dst, top);
HorizontalPred16x16(I16HE16 + dst, left);
TrueMotion16x16(I16TM16 + dst, left, top);
}
//------------------------------------------------------------------------------
// Entry point
@ -423,6 +535,7 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspInitMSA(void) {
VP8TDisto16x16 = Disto16x16;
VP8EncPredLuma4 = Intra4Preds;
VP8EncPredLuma16 = Intra16Preds;
}
#else // !WEBP_USE_MSA