1 files changed, 96 insertions, 0 deletions
diff --git a/chromium/third_party/libvpx/source/libvpx/vpx_dsp/arm/mem_neon.h b/chromium/third_party/libvpx/source/libvpx/vpx_dsp/arm/mem_neon.h
new file mode 100644
index 00000000000..ba5c3d513d4
--- /dev/null
+++ b/chromium/third_party/libvpx/source/libvpx/vpx_dsp/arm/mem_neon.h
@@ -0,0 +1,96 @@
+/*
+ *  Copyright (c) 2017 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.
+ */
+
+#ifndef VPX_DSP_ARM_MEM_NEON_H_
+#define VPX_DSP_ARM_MEM_NEON_H_
+
+#include <arm_neon.h>
+#include <assert.h>
+#include <string.h>
+
+#include "./vpx_config.h"
+#include "vpx/vpx_integer.h"
+#include "vpx_dsp/vpx_dsp_common.h"
+
+// Helper functions used to load tran_low_t into int16, narrowing if necessary.
+static INLINE int16x8x2_t load_tran_low_to_s16x2q(const tran_low_t *buf) {
+#if CONFIG_VP9_HIGHBITDEPTH
+  const int32x4x2_t v0 = vld2q_s32(buf);
+  const int32x4x2_t v1 = vld2q_s32(buf + 8);
+  const int16x4_t s0 = vmovn_s32(v0.val[0]);
+  const int16x4_t s1 = vmovn_s32(v0.val[1]);
+  const int16x4_t s2 = vmovn_s32(v1.val[0]);
+  const int16x4_t s3 = vmovn_s32(v1.val[1]);
+  int16x8x2_t res;
+  res.val[0] = vcombine_s16(s0, s2);
+  res.val[1] = vcombine_s16(s1, s3);
+  return res;
+#else
+  return vld2q_s16(buf);
+#endif
+}
+
+static INLINE int16x8_t load_tran_low_to_s16q(const tran_low_t *buf) {
+#if CONFIG_VP9_HIGHBITDEPTH
+  const int32x4_t v0 = vld1q_s32(buf);
+  const int32x4_t v1 = vld1q_s32(buf + 4);
+  const int16x4_t s0 = vmovn_s32(v0);
+  const int16x4_t s1 = vmovn_s32(v1);
+  return vcombine_s16(s0, s1);
+#else
+  return vld1q_s16(buf);
+#endif
+}
+
+static INLINE int16x4_t load_tran_low_to_s16d(const tran_low_t *buf) {
+#if CONFIG_VP9_HIGHBITDEPTH
+  const int32x4_t v0 = vld1q_s32(buf);
+  return vmovn_s32(v0);
+#else
+  return vld1_s16(buf);
+#endif
+}
+
+static INLINE void store_s16q_to_tran_low(tran_low_t *buf, const int16x8_t a) {
+#if CONFIG_VP9_HIGHBITDEPTH
+  const int32x4_t v0 = vmovl_s16(vget_low_s16(a));
+  const int32x4_t v1 = vmovl_s16(vget_high_s16(a));
+  vst1q_s32(buf, v0);
+  vst1q_s32(buf + 4, v1);
+#else
+  vst1q_s16(buf, a);
+#endif
+}
+
+// Load 2 sets of 4 bytes when alignment is guaranteed.
+static INLINE uint8x8_t load_u8(const uint8_t *buf, int stride) {
+  uint32x2_t a = vdup_n_u32(0);
+
+  assert(!((intptr_t)buf % sizeof(uint32_t)));
+  assert(!(stride % sizeof(uint32_t)));
+
+  a = vld1_lane_u32((const uint32_t *)buf, a, 0);
+  buf += stride;
+  a = vld1_lane_u32((const uint32_t *)buf, a, 1);
+  return vreinterpret_u8_u32(a);
+}
+
+// Store 2 sets of 4 bytes when alignment is guaranteed.
+static INLINE void store_u8(uint8_t *buf, int stride, const uint8x8_t a) {
+  uint32x2_t a_u32 = vreinterpret_u32_u8(a);
+
+  assert(!((intptr_t)buf % sizeof(uint32_t)));
+  assert(!(stride % sizeof(uint32_t)));
+
+  vst1_lane_u32((uint32_t *)buf, a_u32, 0);
+  buf += stride;
+  vst1_lane_u32((uint32_t *)buf, a_u32, 1);
+}
+#endif  // VPX_DSP_ARM_MEM_NEON_H_