shithub: libvpx

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ppc: d45 predictor 32x32

About 12x faster.

Change-Id: I22c150256aefb4941861ab1f6c17d554fb694bed

--- a/test/test_intra_pred_speed.cc

+++ b/test/test_intra_pred_speed.cc

@@ -325,8 +325,8 @@

 INTRA_PRED_TEST(VSX, TestIntraPred32, vpx_dc_predictor_32x32_vsx,

                 vpx_dc_left_predictor_32x32_vsx, vpx_dc_top_predictor_32x32_vsx,

                 vpx_dc_128_predictor_32x32_vsx, vpx_v_predictor_32x32_vsx,

-                vpx_h_predictor_32x32_vsx, NULL, NULL, NULL, NULL, NULL, NULL,

-                vpx_tm_predictor_32x32_vsx)

+                vpx_h_predictor_32x32_vsx, vpx_d45_predictor_32x32_vsx, NULL,

+                NULL, NULL, NULL, NULL, vpx_tm_predictor_32x32_vsx)

 #endif  // HAVE_VSX

 // -----------------------------------------------------------------------------

--- a/vpx_dsp/ppc/intrapred_vsx.c

+++ b/vpx_dsp/ppc/intrapred_vsx.c

@@ -518,3 +518,26 @@

     row = vec_perm(row, above_right, sl1);

   }

 }

+

+void vpx_d45_predictor_32x32_vsx(uint8_t *dst, ptrdiff_t stride,

+                                 const uint8_t *above, const uint8_t *left) {

+  const uint8x16_t a0 = vec_vsx_ld(0, above);

+  const uint8x16_t a1 = vec_vsx_ld(16, above);

+  const uint8x16_t above_right = vec_splat(a1, 15);

+  const uint8x16_t b0 = vec_perm(a0, a1, sl1);

+  const uint8x16_t b1 = vec_perm(a1, above_right, sl1);

+  const uint8x16_t c0 = vec_perm(b0, b1, sl1);

+  const uint8x16_t c1 = vec_perm(b1, above_right, sl1);

+  uint8x16_t row0 = avg3(a0, b0, c0);

+  uint8x16_t row1 = avg3(a1, b1, c1);

+  int i;

+  (void)left;

+

+  for (i = 0; i < 32; i++) {

+    vec_vsx_st(row0, 0, dst);

+    vec_vsx_st(row1, 16, dst);

+    dst += stride;

+    row0 = vec_perm(row0, row1, sl1);

+    row1 = vec_perm(row1, above_right, sl1);

+  }

+}

--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl

+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl

@@ -151,7 +151,7 @@

 specialize qw/vpx_d207_predictor_32x32 ssse3/;

 add_proto qw/void vpx_d45_predictor_32x32/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";

-specialize qw/vpx_d45_predictor_32x32 neon ssse3/;

+specialize qw/vpx_d45_predictor_32x32 neon ssse3 vsx/;

 add_proto qw/void vpx_d63_predictor_32x32/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";

 specialize qw/vpx_d63_predictor_32x32 ssse3/;