shithub: libvpx

Download patch

ref: 527e0c9b1c898360bb3cbf7cc7478a27395dbe58
parent: 3c18acf45234ea801b5f966467c6837e442ef4c0
author: Johann <johannkoenig@google.com>
date: Thu Jul 6 04:31:41 EDT 2017 

sad neon: avg for 16x[8,16,32]

BUG=webm:1425

Change-Id: Ia42e4f36547c5fe12114fb58379e34bce82eb2f2


--- a/test/sad_test.cc
+++ b/test/sad_test.cc
@@ -658,6 +658,9 @@
 INSTANTIATE_TEST_CASE_P(NEON, SADTest, ::testing::ValuesIn(neon_tests));
 
 const SadMxNAvgParam avg_neon_tests[] = {
+  SadMxNAvgParam(16, 32, &vpx_sad16x32_avg_neon),
+  SadMxNAvgParam(16, 16, &vpx_sad16x16_avg_neon),
+  SadMxNAvgParam(16, 8, &vpx_sad16x8_avg_neon),
   SadMxNAvgParam(8, 16, &vpx_sad8x16_avg_neon),
   SadMxNAvgParam(8, 8, &vpx_sad8x8_avg_neon),
   SadMxNAvgParam(8, 4, &vpx_sad8x4_avg_neon),
--- a/vpx_dsp/arm/sad_neon.c
+++ b/vpx_dsp/arm/sad_neon.c
@@ -151,10 +151,38 @@
   return abs;
 }
 
+static INLINE uint16x8_t sad16x_avg(const uint8_t *a, int a_stride,
+                                    const uint8_t *b, int b_stride,
+                                    const uint8_t *c, const int height) {
+  int i;
+  uint16x8_t abs = vdupq_n_u16(0);
+
+  for (i = 0; i < height; ++i) {
+    const uint8x16_t a_u8 = vld1q_u8(a);
+    const uint8x16_t b_u8 = vld1q_u8(b);
+    const uint8x16_t c_u8 = vld1q_u8(c);
+    const uint8x16_t avg = vrhaddq_u8(b_u8, c_u8);
+    a += a_stride;
+    b += b_stride;
+    c += 16;
+    abs = vabal_u8(abs, vget_low_u8(a_u8), vget_low_u8(avg));
+    abs = vabal_u8(abs, vget_high_u8(a_u8), vget_high_u8(avg));
+  }
+  return abs;
+}
+
 #define sad16xN(n)                                                      \
   uint32_t vpx_sad16x##n##_neon(const uint8_t *src, int src_stride,     \
                                 const uint8_t *ref, int ref_stride) {   \
     const uint16x8_t abs = sad16x(src, src_stride, ref, ref_stride, n); \
+    return horizontal_add_16x8(abs);                                    \
+  }                                                                     \
+                                                                        \
+  uint32_t vpx_sad16x##n##_avg_neon(const uint8_t *src, int src_stride, \
+                                    const uint8_t *ref, int ref_stride, \
+                                    const uint8_t *second_pred) {       \
+    const uint16x8_t abs =                                              \
+        sad16x_avg(src, src_stride, ref, ref_stride, second_pred, n);   \
     return horizontal_add_16x8(abs);                                    \
   }
 
--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl
+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl
@@ -795,13 +795,13 @@
 specialize qw/vpx_sad32x16_avg avx2 msa sse2 vsx/;
 
 add_proto qw/unsigned int vpx_sad16x32_avg/, "const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, int ref_stride, const uint8_t *second_pred";
-specialize qw/vpx_sad16x32_avg msa sse2 vsx/;
+specialize qw/vpx_sad16x32_avg neon msa sse2 vsx/;
 
 add_proto qw/unsigned int vpx_sad16x16_avg/, "const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, int ref_stride, const uint8_t *second_pred";
-specialize qw/vpx_sad16x16_avg msa sse2 vsx/;
+specialize qw/vpx_sad16x16_avg neon msa sse2 vsx/;
 
 add_proto qw/unsigned int vpx_sad16x8_avg/, "const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, int ref_stride, const uint8_t *second_pred";
-specialize qw/vpx_sad16x8_avg msa sse2 vsx/;
+specialize qw/vpx_sad16x8_avg neon msa sse2 vsx/;
 
 add_proto qw/unsigned int vpx_sad8x16_avg/, "const uint8_t *src_ptr, int src_stride, const uint8_t *ref_ptr, int ref_stride, const uint8_t *second_pred";
 specialize qw/vpx_sad8x16_avg neon msa sse2/;