shithub: libvpx

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ppc: dc_128 predictor 32x32

6x faster.

Change-Id: I1da8f51b4262871cb98f0aa03ccda41b0ac2b08b

--- a/test/test_intra_pred_speed.cc

+++ b/test/test_intra_pred_speed.cc

@@ -321,9 +321,10 @@

                 vpx_h_predictor_16x16_vsx, NULL, NULL, NULL, NULL, NULL, NULL,

                 vpx_tm_predictor_16x16_vsx)

-INTRA_PRED_TEST(VSX, TestIntraPred32, NULL, NULL, NULL, NULL,

-                vpx_v_predictor_32x32_vsx, vpx_h_predictor_32x32_vsx, NULL,

-                NULL, NULL, NULL, NULL, NULL, vpx_tm_predictor_32x32_vsx)

+INTRA_PRED_TEST(VSX, TestIntraPred32, NULL, NULL, NULL,

+                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)

 #endif  // HAVE_VSX

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

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

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

@@ -379,3 +379,22 @@

   dc_fill_predictor_16x16(dst, stride, v128);

 }

+

+static INLINE void dc_fill_predictor_32x32(uint8_t *dst, const ptrdiff_t stride,

+                                           const uint8x16_t val) {

+  int i;

+

+  for (i = 0; i < 32; i++, dst += stride) {

+    vec_vsx_st(val, 0, dst);

+    vec_vsx_st(val, 16, dst);

+  }

+}

+

+void vpx_dc_128_predictor_32x32_vsx(uint8_t *dst, ptrdiff_t stride,

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

+  const uint8x16_t v128 = vec_sl(vec_splat_u8(1), vec_splat_u8(7));

+  (void)above;

+  (void)left;

+

+  dc_fill_predictor_32x32(dst, stride, v128);

+}

--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl

+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl

@@ -183,7 +183,7 @@

 specialize qw/vpx_dc_left_predictor_32x32 msa neon sse2/;

 add_proto qw/void vpx_dc_128_predictor_32x32/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";

-specialize qw/vpx_dc_128_predictor_32x32 msa neon sse2/;

+specialize qw/vpx_dc_128_predictor_32x32 msa neon sse2 vsx/;

 # High bitdepth functions

 if (vpx_config("CONFIG_VP9_HIGHBITDEPTH") eq "yes") {