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dec_neon: add HE8uv / HE16

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HE8uv/HE16: ~91%/~83% faster over 20M pixels

Change-Id: Ib0a776f7c193593ea0993e92cfa6e6be000fb810
This commit is contained in:
James Zern 2015-05-30 13:03:49 -07:00
parent ac76801159
commit 14dbd87bed
1 changed files with 21 additions and 0 deletions
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21
src/dsp/dec_neon.c
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@ -1385,6 +1385,15 @@ static void LD4(uint8_t* dst) { // Down-left
//------------------------------------------------------------------------------
// Chroma
static void HE8uv(uint8_t* dst) { // horizontal
int j;
for (j = 0; j < 8; ++j) {
const uint8x8_t left = vld1_dup_u8(dst - 1);
vst1_u8(dst, left);
dst += BPS;
}
}
static WEBP_INLINE void DC8(uint8_t* dst, int do_top, int do_left) {
uint16x8_t sum_top;
uint16x8_t sum_left;
@ -1445,6 +1454,16 @@ static void TM8uv(uint8_t* dst) { TrueMotion(dst, 8); }
//------------------------------------------------------------------------------
// 16x16
static void HE16(uint8_t* dst) { // horizontal
int j;
for (j = 0; j < 16; ++j) {
const uint8x16_t left = vld1q_dup_u8(dst - 1);
vst1q_u8(dst, left);
dst += BPS;
}
}
static WEBP_INLINE void DC16(uint8_t* dst, int do_top, int do_left) {
uint16x8_t sum_top;
uint16x8_t sum_left;
@ -1577,12 +1596,14 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitNEON(void) {
VP8PredLuma16[0] = DC16TopLeft;
VP8PredLuma16[1] = TM16;
VP8PredLuma16[3] = HE16;
VP8PredLuma16[4] = DC16NoTop;
VP8PredLuma16[5] = DC16NoLeft;
VP8PredLuma16[6] = DC16NoTopLeft;
VP8PredChroma8[0] = DC8uv;
VP8PredChroma8[1] = TM8uv;
VP8PredChroma8[3] = HE8uv;
VP8PredChroma8[4] = DC8uvNoTop;
VP8PredChroma8[5] = DC8uvNoLeft;
VP8PredChroma8[6] = DC8uvNoTopLeft;