libvpx: Pull from upstream

source/libvpx/vpx_dsp/arm/sad_neon.c

 /*
  *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <arm_neon.h>
-#include "./vp9_rtcd.h"
+
 #include "./vpx_config.h"
 
 #include "vpx/vpx_integer.h"
 
+unsigned int vpx_sad8x16_neon(
+        unsigned char *src_ptr,
+        int src_stride,
+        unsigned char *ref_ptr,
+        int ref_stride) {
+    uint8x8_t d0, d8;
+    uint16x8_t q12;
+    uint32x4_t q1;
+    uint64x2_t q3;
+    uint32x2_t d5;
+    int i;
+
+    d0 = vld1_u8(src_ptr);
+    src_ptr += src_stride;
+    d8 = vld1_u8(ref_ptr);
+    ref_ptr += ref_stride;
+    q12 = vabdl_u8(d0, d8);
+
+    for (i = 0; i < 15; i++) {
+        d0 = vld1_u8(src_ptr);
+        src_ptr += src_stride;
+        d8 = vld1_u8(ref_ptr);
+        ref_ptr += ref_stride;
+        q12 = vabal_u8(q12, d0, d8);
+    }
+
+    q1 = vpaddlq_u16(q12);
+    q3 = vpaddlq_u32(q1);
+    d5 = vadd_u32(vreinterpret_u32_u64(vget_low_u64(q3)),
+                  vreinterpret_u32_u64(vget_high_u64(q3)));
+
+    return vget_lane_u32(d5, 0);
+}
+
+unsigned int vpx_sad4x4_neon(
+        unsigned char *src_ptr,
+        int src_stride,
+        unsigned char *ref_ptr,
+        int ref_stride) {
+    uint8x8_t d0, d8;
+    uint16x8_t q12;
+    uint32x2_t d1;
+    uint64x1_t d3;
+    int i;
+
+    d0 = vld1_u8(src_ptr);
+    src_ptr += src_stride;
+    d8 = vld1_u8(ref_ptr);
+    ref_ptr += ref_stride;
+    q12 = vabdl_u8(d0, d8);
+
+    for (i = 0; i < 3; i++) {
+        d0 = vld1_u8(src_ptr);
+        src_ptr += src_stride;
+        d8 = vld1_u8(ref_ptr);
+        ref_ptr += ref_stride;
+        q12 = vabal_u8(q12, d0, d8);
+    }
+
+    d1 = vpaddl_u16(vget_low_u16(q12));
+    d3 = vpaddl_u32(d1);
+
+    return vget_lane_u32(vreinterpret_u32_u64(d3), 0);
+}
+
+unsigned int vpx_sad16x8_neon(
+        unsigned char *src_ptr,
+        int src_stride,
+        unsigned char *ref_ptr,
+        int ref_stride) {
+    uint8x16_t q0, q4;
+    uint16x8_t q12, q13;
+    uint32x4_t q1;
+    uint64x2_t q3;
+    uint32x2_t d5;
+    int i;
+
+    q0 = vld1q_u8(src_ptr);
+    src_ptr += src_stride;
+    q4 = vld1q_u8(ref_ptr);
+    ref_ptr += ref_stride;
+    q12 = vabdl_u8(vget_low_u8(q0), vget_low_u8(q4));
+    q13 = vabdl_u8(vget_high_u8(q0), vget_high_u8(q4));
+
+    for (i = 0; i < 7; i++) {
+        q0 = vld1q_u8(src_ptr);
+        src_ptr += src_stride;
+        q4 = vld1q_u8(ref_ptr);
+        ref_ptr += ref_stride;
+        q12 = vabal_u8(q12, vget_low_u8(q0), vget_low_u8(q4));
+        q13 = vabal_u8(q13, vget_high_u8(q0), vget_high_u8(q4));
+    }
+
+    q12 = vaddq_u16(q12, q13);
+    q1 = vpaddlq_u16(q12);
+    q3 = vpaddlq_u32(q1);
+    d5 = vadd_u32(vreinterpret_u32_u64(vget_low_u64(q3)),
+                  vreinterpret_u32_u64(vget_high_u64(q3)));
+
+    return vget_lane_u32(d5, 0);
+}
+
 static INLINE unsigned int horizontal_long_add_16x8(const uint16x8_t vec_lo,
                                                     const uint16x8_t vec_hi) {
   const uint32x4_t vec_l_lo = vaddl_u16(vget_low_u16(vec_lo),
                                         vget_high_u16(vec_lo));
   const uint32x4_t vec_l_hi = vaddl_u16(vget_low_u16(vec_hi),
                                         vget_high_u16(vec_hi));
   const uint32x4_t a = vaddq_u32(vec_l_lo, vec_l_hi);
   const uint64x2_t b = vpaddlq_u32(a);
   const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
                                 vreinterpret_u32_u64(vget_high_u64(b)));
   return vget_lane_u32(c, 0);
 }
 static INLINE unsigned int horizontal_add_16x8(const uint16x8_t vec_16x8) {
   const uint32x4_t a = vpaddlq_u16(vec_16x8);
   const uint64x2_t b = vpaddlq_u32(a);
   const uint32x2_t c = vadd_u32(vreinterpret_u32_u64(vget_low_u64(b)),
                                 vreinterpret_u32_u64(vget_high_u64(b)));
   return vget_lane_u32(c, 0);
 }
 
-unsigned int vp9_sad64x64_neon(const uint8_t *src, int src_stride,
+unsigned int vpx_sad64x64_neon(const uint8_t *src, int src_stride,
                                const uint8_t *ref, int ref_stride) {
   int i;
   uint16x8_t vec_accum_lo = vdupq_n_u16(0);
   uint16x8_t vec_accum_hi = vdupq_n_u16(0);
   for (i = 0; i < 64; ++i) {
     const uint8x16_t vec_src_00 = vld1q_u8(src);
     const uint8x16_t vec_src_16 = vld1q_u8(src + 16);
     const uint8x16_t vec_src_32 = vld1q_u8(src + 32);
     const uint8x16_t vec_src_48 = vld1q_u8(src + 48);
     const uint8x16_t vec_ref_00 = vld1q_u8(ref);
@@ skipping 15 matching lines @@
     vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_32),
                             vget_high_u8(vec_ref_32));
     vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_48),
                             vget_low_u8(vec_ref_48));
     vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_48),
                             vget_high_u8(vec_ref_48));
   }
   return horizontal_long_add_16x8(vec_accum_lo, vec_accum_hi);
 }
 
-unsigned int vp9_sad32x32_neon(const uint8_t *src, int src_stride,
+unsigned int vpx_sad32x32_neon(const uint8_t *src, int src_stride,
                                const uint8_t *ref, int ref_stride) {
   int i;
   uint16x8_t vec_accum_lo = vdupq_n_u16(0);
   uint16x8_t vec_accum_hi = vdupq_n_u16(0);
 
   for (i = 0; i < 32; ++i) {
     const uint8x16_t vec_src_00 = vld1q_u8(src);
     const uint8x16_t vec_src_16 = vld1q_u8(src + 16);
     const uint8x16_t vec_ref_00 = vld1q_u8(ref);
     const uint8x16_t vec_ref_16 = vld1q_u8(ref + 16);
     src += src_stride;
     ref += ref_stride;
     vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_00),
                             vget_low_u8(vec_ref_00));
     vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_00),
                             vget_high_u8(vec_ref_00));
     vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src_16),
                             vget_low_u8(vec_ref_16));
     vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src_16),
                             vget_high_u8(vec_ref_16));
   }
   return horizontal_add_16x8(vaddq_u16(vec_accum_lo, vec_accum_hi));
 }
 
-unsigned int vp9_sad16x16_neon(const uint8_t *src, int src_stride,
+unsigned int vpx_sad16x16_neon(const uint8_t *src, int src_stride,
                                const uint8_t *ref, int ref_stride) {
   int i;
   uint16x8_t vec_accum_lo = vdupq_n_u16(0);
   uint16x8_t vec_accum_hi = vdupq_n_u16(0);
 
   for (i = 0; i < 16; ++i) {
     const uint8x16_t vec_src = vld1q_u8(src);
     const uint8x16_t vec_ref = vld1q_u8(ref);
     src += src_stride;
     ref += ref_stride;
     vec_accum_lo = vabal_u8(vec_accum_lo, vget_low_u8(vec_src),
                             vget_low_u8(vec_ref));
     vec_accum_hi = vabal_u8(vec_accum_hi, vget_high_u8(vec_src),
                             vget_high_u8(vec_ref));
   }
   return horizontal_add_16x8(vaddq_u16(vec_accum_lo, vec_accum_hi));
 }
 
-unsigned int vp9_sad8x8_neon(const uint8_t *src, int src_stride,
+unsigned int vpx_sad8x8_neon(const uint8_t *src, int src_stride,
                              const uint8_t *ref, int ref_stride) {
   int i;
   uint16x8_t vec_accum = vdupq_n_u16(0);
 
   for (i = 0; i < 8; ++i) {
     const uint8x8_t vec_src = vld1_u8(src);
     const uint8x8_t vec_ref = vld1_u8(ref);
     src += src_stride;
     ref += ref_stride;
     vec_accum = vabal_u8(vec_accum, vec_src, vec_ref);
   }
   return horizontal_add_16x8(vec_accum);
 }