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dec_neon: add VE8uv / VE16

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VE8uv/VE16: ~25%/~33% faster over 20M pixels

Change-Id: Ifac1114091527a05ed10edfcc43852edff012d14
This commit is contained in:
James Zern 2015-05-30 13:09:43 -07:00
parent 14dbd87bed
commit 64960da9e1
1 changed files with 18 additions and 0 deletions
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18
src/dsp/dec_neon.c
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@ -1385,6 +1385,14 @@ static void LD4(uint8_t* dst) { // Down-left
//------------------------------------------------------------------------------
// Chroma
static void VE8uv(uint8_t* dst) { // vertical
const uint8x8_t top = vld1_u8(dst - BPS);
int j;
for (j = 0; j < 8; ++j) {
vst1_u8(dst + j * BPS, top);
}
}
static void HE8uv(uint8_t* dst) { // horizontal
int j;
for (j = 0; j < 8; ++j) {
@ -1455,6 +1463,14 @@ static void TM8uv(uint8_t* dst) { TrueMotion(dst, 8); }
//------------------------------------------------------------------------------
// 16x16
static void VE16(uint8_t* dst) { // vertical
const uint8x16_t top = vld1q_u8(dst - BPS);
int j;
for (j = 0; j < 16; ++j) {
vst1q_u8(dst + j * BPS, top);
}
}
static void HE16(uint8_t* dst) { // horizontal
int j;
for (j = 0; j < 16; ++j) {
@ -1596,6 +1612,7 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitNEON(void) {
VP8PredLuma16[0] = DC16TopLeft;
VP8PredLuma16[1] = TM16;
VP8PredLuma16[2] = VE16;
VP8PredLuma16[3] = HE16;
VP8PredLuma16[4] = DC16NoTop;
VP8PredLuma16[5] = DC16NoLeft;
@ -1603,6 +1620,7 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitNEON(void) {
VP8PredChroma8[0] = DC8uv;
VP8PredChroma8[1] = TM8uv;
VP8PredChroma8[2] = VE8uv;
VP8PredChroma8[3] = HE8uv;
VP8PredChroma8[4] = DC8uvNoTop;
VP8PredChroma8[5] = DC8uvNoLeft;