shithub: libvpx

Download patch

ref: 0fefc6873a7f11032e52900aa1d8adf9ad8dbeed
parent: b73f99745bea9d5d321d2f76008948f256f3b336
parent: cf76ee2cb79ed5c53f754819f94ed9a9dacbe825
author: Linfeng Zhang <linfengz@google.com>
date: Wed Feb 8 12:20:19 EST 2017 

Merge "Add vpx_idct16x16_38_add_c()"


--- a/test/partial_idct_test.cc
+++ b/test/partial_idct_test.cc
@@ -427,6 +427,8 @@
   make_tuple(&vpx_fdct16x16_c, &wrapper<vpx_idct16x16_256_add_c>,
              &wrapper<vpx_idct16x16_256_add_c>, TX_16X16, 256, 8, 1),
   make_tuple(&vpx_fdct16x16_c, &wrapper<vpx_idct16x16_256_add_c>,
+             &wrapper<vpx_idct16x16_38_add_c>, TX_16X16, 38, 8, 1),
+  make_tuple(&vpx_fdct16x16_c, &wrapper<vpx_idct16x16_256_add_c>,
              &wrapper<vpx_idct16x16_10_add_c>, TX_16X16, 10, 8, 1),
   make_tuple(&vpx_fdct16x16_c, &wrapper<vpx_idct16x16_256_add_c>,
              &wrapper<vpx_idct16x16_1_add_c>, TX_16X16, 1, 8, 1),
--- a/vp9/common/vp9_idct.c
+++ b/vp9/common/vp9_idct.c
@@ -156,6 +156,8 @@
     vpx_idct16x16_1_add(input, dest, stride);
   else if (eob <= 10)
     vpx_idct16x16_10_add(input, dest, stride);
+  else if (eob <= 38)
+    vpx_idct16x16_38_add(input, dest, stride);
   else
     vpx_idct16x16_256_add(input, dest, stride);
 }
--- a/vpx_dsp/inv_txfm.c
+++ b/vpx_dsp/inv_txfm.c
@@ -767,6 +767,32 @@
   }
 }
 
+void vpx_idct16x16_38_add_c(const tran_low_t *input, uint8_t *dest,
+                            int stride) {
+  int i, j;
+  tran_low_t out[16 * 16] = { 0 };
+  tran_low_t *outptr = out;
+  tran_low_t temp_in[16], temp_out[16];
+
+  // First transform rows. Since all non-zero dct coefficients are in
+  // upper-left 8x8 area, we only need to calculate first 8 rows here.
+  for (i = 0; i < 8; ++i) {
+    idct16_c(input, outptr);
+    input += 16;
+    outptr += 16;
+  }
+
+  // Then transform columns
+  for (i = 0; i < 16; ++i) {
+    for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i];
+    idct16_c(temp_in, temp_out);
+    for (j = 0; j < 16; ++j) {
+      dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
+                                            ROUND_POWER_OF_TWO(temp_out[j], 6));
+    }
+  }
+}
+
 void vpx_idct16x16_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
   int i, j;
   tran_high_t a1;
--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl
+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl
@@ -650,6 +650,8 @@
 
     add_proto qw/void vpx_idct16x16_256_add/, "const tran_low_t *input, uint8_t *dest, int stride";
 
+    add_proto qw/void vpx_idct16x16_38_add/, "const tran_low_t *input, uint8_t *dest, int stride";
+
     add_proto qw/void vpx_idct16x16_10_add/, "const tran_low_t *input, uint8_t *dest, int stride";
 
     add_proto qw/void vpx_idct16x16_1_add/, "const tran_low_t *input, uint8_t *dest, int stride";
@@ -691,6 +693,11 @@
     add_proto qw/void vpx_idct16x16_256_add/, "const tran_low_t *input, uint8_t *dest, int stride";
     specialize qw/vpx_idct16x16_256_add neon sse2/;
 
+    add_proto qw/void vpx_idct16x16_38_add/, "const tran_low_t *input, uint8_t *dest, int stride";
+    specialize qw/vpx_idct16x16_38_add neon sse2/;
+    $vpx_idct16x16_38_add_neon=vpx_idct16x16_256_add_neon;
+    $vpx_idct16x16_38_add_sse2=vpx_idct16x16_256_add_sse2;
+
     add_proto qw/void vpx_idct16x16_10_add/, "const tran_low_t *input, uint8_t *dest, int stride";
     specialize qw/vpx_idct16x16_10_add neon sse2/;
 
@@ -743,6 +750,8 @@
 
     add_proto qw/void vpx_idct16x16_256_add/, "const tran_low_t *input, uint8_t *dest, int stride";
 
+    add_proto qw/void vpx_idct16x16_38_add/, "const tran_low_t *input, uint8_t *dest, int stride";
+
     add_proto qw/void vpx_idct16x16_10_add/, "const tran_low_t *input, uint8_t *dest, int stride";
 
     add_proto qw/void vpx_idct32x32_1024_add/, "const tran_low_t *input, uint8_t *dest, int stride";
@@ -777,6 +786,13 @@
 
     add_proto qw/void vpx_idct16x16_256_add/, "const tran_low_t *input, uint8_t *dest, int stride";
     specialize qw/vpx_idct16x16_256_add sse2 neon dspr2 msa/;
+
+    add_proto qw/void vpx_idct16x16_38_add/, "const tran_low_t *input, uint8_t *dest, int stride";
+    specialize qw/vpx_idct16x16_38_add sse2 neon dspr2 msa/;
+    $vpx_idct16x16_38_add_neon=vpx_idct16x16_256_add_neon;
+    $vpx_idct16x16_38_add_sse2=vpx_idct16x16_256_add_sse2;
+    $vpx_idct16x16_38_add_dspr2=vpx_idct16x16_256_add_dspr2;
+    $vpx_idct16x16_38_add_msa=vpx_idct16x16_256_add_msa;
 
     add_proto qw/void vpx_idct16x16_10_add/, "const tran_low_t *input, uint8_t *dest, int stride";
     specialize qw/vpx_idct16x16_10_add sse2 neon dspr2 msa/;