diff options
| author | Scott LaVarnway <slavarnway@google.com> | 2012-10-22 16:38:58 -0700 |
|---|---|---|
| committer | Gerrit Code Review <gerrit@gerrit.golo.chromium.org> | 2012-10-25 12:19:41 -0700 |
| commit | d3465a53523878052f75cc80fe7603b3fcaff2aa (patch) | |
| tree | bae5ac20d3d5e896e021e515c001c868217e237b | |
| parent | be4e7c5f77ec8413883cf250e8b1103a387261c4 (diff) | |
| download | libvpx-d3465a53523878052f75cc80fe7603b3fcaff2aa.tar libvpx-d3465a53523878052f75cc80fe7603b3fcaff2aa.tar.gz libvpx-d3465a53523878052f75cc80fe7603b3fcaff2aa.tar.bz2 libvpx-d3465a53523878052f75cc80fe7603b3fcaff2aa.zip | |
Added sse2 instrinsic version of vp8_sad3x16
1.6% boost in decoder performance for the clip used.
Change-Id: I91f3c4573fd3d10afbf18930f279af7ae2223e3a
| -rw-r--r-- | vp8/common/rtcd_defs.sh | 2 | ||||
| -rw-r--r-- | vp8/common/x86/sadmxn_x86.c | 42 |
2 files changed, 43 insertions, 1 deletions
diff --git a/vp8/common/rtcd_defs.sh b/vp8/common/rtcd_defs.sh index 90debf5cb..d7e5b5b25 100644 --- a/vp8/common/rtcd_defs.sh +++ b/vp8/common/rtcd_defs.sh @@ -182,7 +182,7 @@ prototype unsigned int vp8_sad16x3 "const unsigned char *src_ptr, int src_strid specialize vp8_sad16x3 sse2 prototype unsigned int vp8_sad3x16 "const unsigned char *src_ptr, int src_stride, const unsigned char *ref_ptr, int ref_stride, int max_sad" -specialize vp8_sad3x16 +specialize vp8_sad3x16 sse2 fi # diff --git a/vp8/common/x86/sadmxn_x86.c b/vp8/common/x86/sadmxn_x86.c index 5057703bd..46f388247 100644 --- a/vp8/common/x86/sadmxn_x86.c +++ b/vp8/common/x86/sadmxn_x86.c @@ -44,6 +44,48 @@ unsigned int vp8_sad16x3_sse2( return _mm_cvtsi128_si32(sad); } + +unsigned int vp8_sad3x16_sse2( + const unsigned char *src_ptr, + int src_stride, + const unsigned char *ref_ptr, + int ref_stride, + int max_sad) { + int r; + __m128i s0, s1, s2, s3; + __m128i r0, r1, r2, r3; + __m128i sad = _mm_set1_epi16(0); + for (r = 0; r < 16; r += 4) { + s0 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 0 * src_stride)); + s1 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 1 * src_stride)); + s2 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 2 * src_stride)); + s3 = _mm_cvtsi32_si128 (*(const int *)(src_ptr + 3 * src_stride)); + r0 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 0 * src_stride)); + r1 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 1 * src_stride)); + r2 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 2 * src_stride)); + r3 = _mm_cvtsi32_si128 (*(const int *)(ref_ptr + 3 * src_stride)); + + s0 = _mm_unpacklo_epi8(s0, s1); + r0 = _mm_unpacklo_epi8(r0, r1); + s2 = _mm_unpacklo_epi8(s2, s3); + r2 = _mm_unpacklo_epi8(r2, r3); + s0 = _mm_unpacklo_epi64(s0, s2); + r0 = _mm_unpacklo_epi64(r0, r2); + + // throw out byte 3 + s0 = _mm_slli_epi64(s0, 16); + r0 = _mm_slli_epi64(r0, 16); + + sad = _mm_add_epi16(sad, _mm_sad_epu8(s0, r0)); + + src_ptr += src_stride*4; + ref_ptr += ref_stride*4; + } + + sad = _mm_add_epi16(sad, _mm_srli_si128(sad, 8)); + return _mm_cvtsi128_si32(sad); +} + #endif |