ref: e97b84921941dd40dd6464a59558c75815ac8e9f
parent: bbea7c95d8412a253099bc9e9555feb4e9df25a5
author: James Zern <[email protected]>
date: Wed May 27 14:59:57 EDT 2015
vp9_reconintra_neon: add DC 8x8 predictors ~90% faster over 20M pixels Change-Id: Iab791510cc57c8332c2f9a5da0ed50702e5f5763
--- a/test/test_intra_pred_speed.cc
+++ b/test/test_intra_pred_speed.cc
@@ -248,9 +248,11 @@
#endif // HAVE_DSPR2
#if HAVE_NEON
-INTRA_PRED_TEST(NEON, TestIntraPred8, NULL, NULL, NULL, NULL,
- vp9_v_predictor_8x8_neon, vp9_h_predictor_8x8_neon, NULL, NULL,
- NULL, NULL, NULL, NULL, vp9_tm_predictor_8x8_neon)
+INTRA_PRED_TEST(NEON, TestIntraPred8, vp9_dc_predictor_8x8_neon,
+ vp9_dc_left_predictor_8x8_neon, vp9_dc_top_predictor_8x8_neon,
+ vp9_dc_128_predictor_8x8_neon, vp9_v_predictor_8x8_neon,
+ vp9_h_predictor_8x8_neon, NULL, NULL, NULL, NULL, NULL, NULL,
+ vp9_tm_predictor_8x8_neon)
#endif // HAVE_NEON
--- a/vp9/common/arm/neon/vp9_reconintra_neon.c
+++ b/vp9/common/arm/neon/vp9_reconintra_neon.c
@@ -8,9 +8,85 @@
* be found in the AUTHORS file in the root of the source tree.
*/
-#include <stddef.h>
#include <arm_neon.h>
+#include "./vp9_rtcd.h"
+#include "./vpx_config.h"
+#include "vpx/vpx_integer.h"
+
+//------------------------------------------------------------------------------
+// DC 8x8
+
+// 'do_above' and 'do_left' facilitate branch removal when inlined.
+static INLINE void dc_8x8(uint8_t *dst, ptrdiff_t stride,
+ const uint8_t *above, const uint8_t *left,
+ int do_above, int do_left) {+ uint16x8_t sum_top;
+ uint16x8_t sum_left;
+ uint8x8_t dc0;
+
+ if (do_above) {+ const uint8x8_t A = vld1_u8(above); // top row
+ const uint16x4_t p0 = vpaddl_u8(A); // cascading summation of the top
+ const uint16x4_t p1 = vpadd_u16(p0, p0);
+ const uint16x4_t p2 = vpadd_u16(p1, p1);
+ sum_top = vcombine_u16(p2, p2);
+ }
+
+ if (do_left) {+ const uint8x8_t L = vld1_u8(left); // left border
+ const uint16x4_t p0 = vpaddl_u8(L); // cascading summation of the left
+ const uint16x4_t p1 = vpadd_u16(p0, p0);
+ const uint16x4_t p2 = vpadd_u16(p1, p1);
+ sum_left = vcombine_u16(p2, p2);
+ }
+
+ if (do_above && do_left) {+ const uint16x8_t sum = vaddq_u16(sum_left, sum_top);
+ dc0 = vrshrn_n_u16(sum, 4);
+ } else if (do_above) {+ dc0 = vrshrn_n_u16(sum_top, 3);
+ } else if (do_left) {+ dc0 = vrshrn_n_u16(sum_left, 3);
+ } else {+ dc0 = vdup_n_u8(0x80);
+ }
+
+ {+ const uint8x8_t dc = vdup_lane_u8(dc0, 0);
+ int i;
+ for (i = 0; i < 8; ++i) {+ vst1_u32((uint32_t*)(dst + i * stride), vreinterpret_u32_u8(dc));
+ }
+ }
+}
+
+void vp9_dc_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
+ const uint8_t *above, const uint8_t *left) {+ dc_8x8(dst, stride, above, left, 1, 1);
+}
+
+void vp9_dc_left_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
+ const uint8_t *above, const uint8_t *left) {+ (void)above;
+ dc_8x8(dst, stride, NULL, left, 0, 1);
+}
+
+void vp9_dc_top_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
+ const uint8_t *above, const uint8_t *left) {+ (void)left;
+ dc_8x8(dst, stride, above, NULL, 1, 0);
+}
+
+void vp9_dc_128_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
+ const uint8_t *above, const uint8_t *left) {+ (void)above;
+ (void)left;
+ dc_8x8(dst, stride, NULL, NULL, 0, 0);
+}
+
+#if !HAVE_NEON_ASM
+
void vp9_v_predictor_4x4_neon(uint8_t *dst, ptrdiff_t y_stride,
const uint8_t *above, const uint8_t *left) {int i;
@@ -423,3 +499,4 @@
}
}
}
+#endif // !HAVE_NEON_ASM
--- a/vp9/common/vp9_rtcd_defs.pl
+++ b/vp9/common/vp9_rtcd_defs.pl
@@ -123,16 +123,16 @@
specialize qw/vp9_tm_predictor_8x8 neon dspr2/, "$sse2_x86inc";
add_proto qw/void vp9_dc_predictor_8x8/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
-specialize qw/vp9_dc_predictor_8x8 dspr2/, "$sse_x86inc";
+specialize qw/vp9_dc_predictor_8x8 dspr2 neon/, "$sse_x86inc";
add_proto qw/void vp9_dc_top_predictor_8x8/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
-specialize qw/vp9_dc_top_predictor_8x8/, "$sse_x86inc";
+specialize qw/vp9_dc_top_predictor_8x8 neon/, "$sse_x86inc";
add_proto qw/void vp9_dc_left_predictor_8x8/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
-specialize qw/vp9_dc_left_predictor_8x8/, "$sse_x86inc";
+specialize qw/vp9_dc_left_predictor_8x8 neon/, "$sse_x86inc";
add_proto qw/void vp9_dc_128_predictor_8x8/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
-specialize qw/vp9_dc_128_predictor_8x8/, "$sse_x86inc";
+specialize qw/vp9_dc_128_predictor_8x8 neon/, "$sse_x86inc";
add_proto qw/void vp9_d207_predictor_16x16/, "uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, const uint8_t *left";
specialize qw/vp9_d207_predictor_16x16/, "$ssse3_x86inc";
--- a/vp9/vp9_common.mk
+++ b/vp9/vp9_common.mk
@@ -199,8 +199,9 @@
# TODO(johannkoenig): re-enable when chromium build is fixed
# # https://code.google.com/p/chromium/issues/detail?id=443839
#VP9_COMMON_SRCS-yes += common/arm/neon/vp9_loopfilter_8_neon.c
-VP9_COMMON_SRCS-yes += common/arm/neon/vp9_reconintra_neon.c
endif # HAVE_NEON
endif # HAVE_NEON_ASM
+
+VP9_COMMON_SRCS-$(HAVE_NEON) += common/arm/neon/vp9_reconintra_neon.c
$(eval $(call rtcd_h_template,vp9_rtcd,vp9/common/vp9_rtcd_defs.pl))