diff options
| author | Hubert Mazur <hum@semihalf.com> | 2022-09-20 13:01:57 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2022-09-21 12:57:56 +0300 |
| commit | e9a6170213d9fc48db4f4135b9fd848f461a0bd2 (patch) | |
| tree | f7c6116e3745ed8e8a2bad6d1c0eca9370322d71 /libavcodec/aarch64 | |
| parent | 0ee535b1db392a340a86ce0581dff94624c2da06 (diff) | |
lavc/aarch64: Add neon implementation for vsad8_intra
Provide optimized implementation for vsad8_intra function.
Performance comparison tests are shown below.
- vsad_5_c: 94.7
- vsad_5_neon: 20.7
Benchmarks and tests run with checkasm tool on AWS Graviton 3.
Signed-off-by: Hubert Mazur <hum@semihalf.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/aarch64')
| -rw-r--r-- | libavcodec/aarch64/me_cmp_init_aarch64.c | 3 | ||||
| -rw-r--r-- | libavcodec/aarch64/me_cmp_neon.S | 42 |
2 files changed, 45 insertions, 0 deletions
diff --git a/libavcodec/aarch64/me_cmp_init_aarch64.c b/libavcodec/aarch64/me_cmp_init_aarch64.c index fb51a833be..d3fa047a86 100644 --- a/libavcodec/aarch64/me_cmp_init_aarch64.c +++ b/libavcodec/aarch64/me_cmp_init_aarch64.c @@ -45,6 +45,8 @@ int vsad16_neon(MpegEncContext *c, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride, int h); int vsad_intra16_neon(MpegEncContext *c, const uint8_t *s, const uint8_t *dummy, ptrdiff_t stride, int h) ; +int vsad_intra8_neon(MpegEncContext *c, const uint8_t *s, const uint8_t *dummy, + ptrdiff_t stride, int h) ; int vsse16_neon(MpegEncContext *c, const uint8_t *s1, const uint8_t *s2, ptrdiff_t stride, int h); int vsse_intra16_neon(MpegEncContext *c, const uint8_t *s, const uint8_t *dummy, @@ -75,6 +77,7 @@ av_cold void ff_me_cmp_init_aarch64(MECmpContext *c, AVCodecContext *avctx) c->vsad[0] = vsad16_neon; c->vsad[4] = vsad_intra16_neon; + c->vsad[5] = vsad_intra8_neon; c->vsse[0] = vsse16_neon; c->vsse[4] = vsse_intra16_neon; diff --git a/libavcodec/aarch64/me_cmp_neon.S b/libavcodec/aarch64/me_cmp_neon.S index 1e08d04869..1587f2ea43 100644 --- a/libavcodec/aarch64/me_cmp_neon.S +++ b/libavcodec/aarch64/me_cmp_neon.S @@ -1047,3 +1047,45 @@ function pix_median_abs16_neon, export=1 ret endfunc + +function vsad_intra8_neon, export=1 + // x0 unused + // x1 uint8_t *pix1 + // x2 uint8_t *dummy + // x3 ptrdiff_t stride + // w4 int h + + ld1 {v0.8b}, [x1], x3 + sub w4, w4, #1 // we need to make h-1 iterations + cmp w4, #3 + movi v16.8h, #0 + b.lt 2f + +1: + // v = abs( pix1[0] - pix1[0 + stride] ) + // score = sum(v) + ld1 {v1.8b}, [x1], x3 + sub w4, w4, #3 + ld1 {v2.8b}, [x1], x3 + uabal v16.8h, v0.8b, v1.8b + ld1 {v3.8b}, [x1], x3 + uabal v16.8h, v1.8b, v2.8b + cmp w4, #3 + mov v0.8b, v3.8b + uabal v16.8h, v2.8b, v3.8b + b.ge 1b + cbz w4, 3f + +2: + ld1 {v1.8b}, [x1], x3 + subs w4, w4, #1 + uabal v16.8h, v0.8b, v1.8b + mov v0.8b, v1.8b + cbnz w4, 2b + +3: + uaddlv s17, v16.8h + fmov w0, s17 + + ret +endfunc |