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[Encoder] Add single-block SSE2 4x4 DCT/IDCT routines

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We do four blocks at a time when possible, but need to handle
single blocks at a time for intra prediction.

~2.31x speedup over MMX for the DCT on Haswell.
~1.92x speedup over MMX for the IDCT on Haswell.
This commit is contained in:
Sindre Aamås
2016-01-27 13:18:51 +01:00
parent 7486de2844
commit f90960983c
7 changed files with 157 additions and 31 deletions
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test/encoder/EncUT_EncoderMbAux.cpp
+11 -2
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@@ -147,8 +147,10 @@ static void Sub8x8DctAnchor (int16_t iDct[4][4][4], uint8_t* pPix1, uint8_t* pPi
}
static void TestDctT4 (PDctFunc func) {
int16_t iDctRef[4][4];
uint8_t uiPix1[16 * FENC_STRIDE], uiPix2[16 * FDEC_STRIDE];
int16_t iDct[16];
CMemoryAlign cMemoryAlign (0);
ALLOC_MEMORY (uint8_t, uiPix1, 16 * FENC_STRIDE);
ALLOC_MEMORY (uint8_t, uiPix2, 16 * FDEC_STRIDE);
ALLOC_MEMORY (int16_t, iDct, 16);
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
uiPix1[i * FENC_STRIDE + j] = rand() & 255;
@@ -160,6 +162,9 @@ static void TestDctT4 (PDctFunc func) {
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
EXPECT_EQ (iDctRef[j][i], iDct[i * 4 + j]);
FREE_MEMORY (uiPix1);
FREE_MEMORY (uiPix2);
FREE_MEMORY (iDct);
}
static void TestDctFourT4 (PDctFunc func) {
int16_t iDctRef[4][4][4];
@@ -195,6 +200,10 @@ TEST (EncodeMbAuxTest, WelsDctT4_mmx) {
TestDctT4 (WelsDctT4_mmx);
}
TEST (EncodeMbAuxTest, WelsDctT4_sse2) {
TestDctT4 (WelsDctT4_sse2);
}
TEST (EncodeMbAuxTest, WelsDctFourT4_sse2) {
TestDctFourT4 (WelsDctFourT4_sse2);
}