shithub: libvpx

Download patch

ref: 479443a57082fe7998fda6dbfebb5965dd6998ca
parent: c8f5a55df4267a1fd5fd7d47002ffe2dcb02702e
author: Luca Barbato <lu_zero@gentoo.org>
date: Fri Apr 7 10:49:00 EDT 2017 

ppc: tm predictor 16x16

About 10x faster.

Change-Id: I1f5a3752d346459df3b45f92963208bf3e520f06


--- a/test/test_intra_pred_speed.cc
+++ b/test/test_intra_pred_speed.cc
@@ -318,7 +318,7 @@
 
 INTRA_PRED_TEST(VSX, TestIntraPred16, NULL, NULL, NULL, NULL,
                 vpx_v_predictor_16x16_vsx, vpx_h_predictor_16x16_vsx, NULL,
-                NULL, NULL, NULL, NULL, NULL, 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,
--- a/vpx_dsp/ppc/intrapred_vsx.c
+++ b/vpx_dsp/ppc/intrapred_vsx.c
@@ -226,3 +226,72 @@
   val = vec_sub(vec_add(vec_splat(l, 7), a), tl);
   vec_vsx_st(vec_packsu(val, tmp), 0, dst);
 }
+
+static void tm_predictor_16x8(uint8_t *dst, const ptrdiff_t stride, int16x8_t l,
+                              int16x8_t ah, int16x8_t al, int16x8_t tl) {
+  int16x8_t vh, vl, ls;
+
+  ls = vec_splat(l, 0);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 1);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 2);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 3);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 4);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 5);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 6);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+  dst += stride;
+
+  ls = vec_splat(l, 7);
+  vh = vec_sub(vec_add(ls, ah), tl);
+  vl = vec_sub(vec_add(ls, al), tl);
+  vec_vsx_st(vec_packsu(vh, vl), 0, dst);
+}
+
+void vpx_tm_predictor_16x16_vsx(uint8_t *dst, ptrdiff_t stride,
+                                const uint8_t *above, const uint8_t *left) {
+  const int16x8_t tl = unpack_to_s16_h(vec_splat(vec_vsx_ld(-1, above), 0));
+  const uint8x16_t l = vec_vsx_ld(0, left);
+  const int16x8_t lh = unpack_to_s16_h(l);
+  const int16x8_t ll = unpack_to_s16_l(l);
+  const uint8x16_t a = vec_vsx_ld(0, above);
+  const int16x8_t ah = unpack_to_s16_h(a);
+  const int16x8_t al = unpack_to_s16_l(a);
+
+  tm_predictor_16x8(dst, stride, lh, ah, al, tl);
+
+  dst += stride * 8;
+
+  tm_predictor_16x8(dst, stride, ll, ah, al, tl);
+}
--- a/vpx_dsp/vpx_dsp_rtcd_defs.pl
+++ b/vpx_dsp/vpx_dsp_rtcd_defs.pl
@@ -133,7 +133,7 @@
 specialize qw/vpx_v_predictor_16x16 neon msa sse2 vsx/;
 
 add_proto qw/void vpx_tm_predictor_16x16/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
-specialize qw/vpx_tm_predictor_16x16 neon msa sse2/;
+specialize qw/vpx_tm_predictor_16x16 neon msa sse2 vsx/;
 
 add_proto qw/void vpx_dc_predictor_16x16/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
 specialize qw/vpx_dc_predictor_16x16 dspr2 neon msa sse2/;