shithub: libvpx

Download patch

ref: f310ddc4704e8b1cd5ec72472495ee8c3b13a486
parent: 4959dd3eb36308aa9d94ba4feb6305e8b3f9148b
author: Johann <[email protected]>
date: Thu Jun 22 14:22:27 EDT 2017 

partial fdct neon: add 16x16_1

For the 8x8_1, the highbd output fit nicely in the existing function. 12
bit input will overflow this implementation of 16x16_1.

BUG=webm:1424

Change-Id: I2945fe5478b18f996f1a5de80110fa30f3f4e7ec


--- a/test/dct_partial_test.cc
+++ b/test/dct_partial_test.cc
@@ -142,7 +142,8 @@
 #if CONFIG_VP9_HIGHBITDEPTH
 INSTANTIATE_TEST_CASE_P(
     NEON, PartialFdctTest,
-    ::testing::Values(make_tuple(&vpx_fdct8x8_1_neon, 8, VPX_BITS_12),
+    ::testing::Values(make_tuple(&vpx_fdct16x16_1_neon, 16, VPX_BITS_8),
+                      make_tuple(&vpx_fdct8x8_1_neon, 8, VPX_BITS_12),
                       make_tuple(&vpx_fdct8x8_1_neon, 8, VPX_BITS_10),
                       make_tuple(&vpx_fdct8x8_1_neon, 8, VPX_BITS_8),
                       make_tuple(&vpx_fdct4x4_1_neon, 4, VPX_BITS_8)));
@@ -149,7 +150,8 @@
 #else
 INSTANTIATE_TEST_CASE_P(
     NEON, PartialFdctTest,
-    ::testing::Values(make_tuple(&vpx_fdct8x8_1_neon, 8, VPX_BITS_8),
+    ::testing::Values(make_tuple(&vpx_fdct16x16_1_neon, 16, VPX_BITS_8),
+                      make_tuple(&vpx_fdct8x8_1_neon, 8, VPX_BITS_8),
                       make_tuple(&vpx_fdct4x4_1_neon, 4, VPX_BITS_8)));
 #endif  // CONFIG_VP9_HIGHBITDEPTH
 #endif  // HAVE_NEON
--- a/vpx_dsp/arm/fdct_partial_neon.c
+++ b/vpx_dsp/arm/fdct_partial_neon.c
@@ -59,3 +59,21 @@
   output[0] = sum_int16x8(sum);
   output[1] = 0;
 }
+
+void vpx_fdct16x16_1_neon(const int16_t *input, tran_low_t *output,
+                          int stride) {
+  int r;
+  int16x8_t left = vld1q_s16(input);
+  int16x8_t right = vld1q_s16(input + 8);
+  input += stride;
+  for (r = 1; r < 16; ++r) {
+    const int16x8_t a = vld1q_s16(input);
+    const int16x8_t b = vld1q_s16(input + 8);
+    input += stride;
+    left = vaddq_s16(left, a);
+    right = vaddq_s16(right, b);
+  }
+
+  output[0] = (sum_int16x8(left) + sum_int16x8(right)) >> 1;
+  output[1] = 0;
+}
--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl
+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl
@@ -499,7 +499,7 @@
   specialize qw/vpx_fdct16x16 neon sse2/;
 
   add_proto qw/void vpx_fdct16x16_1/, "const int16_t *input, tran_low_t *output, int stride";
-  specialize qw/vpx_fdct16x16_1 sse2/;
+  specialize qw/vpx_fdct16x16_1 sse2 neon/;
 
   add_proto qw/void vpx_fdct32x32/, "const int16_t *input, tran_low_t *output, int stride";
   specialize qw/vpx_fdct32x32 neon sse2/;
@@ -549,7 +549,7 @@
   specialize qw/vpx_fdct16x16 neon sse2 msa/;
 
   add_proto qw/void vpx_fdct16x16_1/, "const int16_t *input, tran_low_t *output, int stride";
-  specialize qw/vpx_fdct16x16_1 sse2 msa/;
+  specialize qw/vpx_fdct16x16_1 sse2 neon msa/;
 
   add_proto qw/void vpx_fdct32x32/, "const int16_t *input, tran_low_t *output, int stride";
   specialize qw/vpx_fdct32x32 neon sse2 avx2 msa/;