1 files changed, 99 insertions, 0 deletions
diff --git a/vpx_dsp/arm/vpx_convolve_copy_neon.c b/vpx_dsp/arm/vpx_convolve_copy_neon.c
new file mode 100644
index 000000000..361ec8a80
--- /dev/null
+++ b/vpx_dsp/arm/vpx_convolve_copy_neon.c
@@ -0,0 +1,99 @@
+/*
+ *  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 "./vpx_dsp_rtcd.h"
+#include "vpx/vpx_integer.h"
+
+void vpx_convolve_copy_neon(const uint8_t *src, ptrdiff_t src_stride,
+                            uint8_t *dst, ptrdiff_t dst_stride,
+                            const InterpKernel *filter, int x0_q4,
+                            int x_step_q4, int y0_q4, int y_step_q4, int w,
+                            int h) {
+  (void)filter;
+  (void)x0_q4;
+  (void)x_step_q4;
+  (void)y0_q4;
+  (void)y_step_q4;
+
+  if (w < 8) {  // copy4
+    do {
+      *(uint32_t *)dst = *(const uint32_t *)src;
+      src += src_stride;
+      dst += dst_stride;
+      *(uint32_t *)dst = *(const uint32_t *)src;
+      src += src_stride;
+      dst += dst_stride;
+      h -= 2;
+    } while (h != 0);
+  } else if (w == 8) {  // copy8
+    uint8x8_t s0, s1;
+    do {
+      s0 = vld1_u8(src);
+      src += src_stride;
+      s1 = vld1_u8(src);
+      src += src_stride;
+
+      vst1_u8(dst, s0);
+      dst += dst_stride;
+      vst1_u8(dst, s1);
+      dst += dst_stride;
+      h -= 2;
+    } while (h != 0);
+  } else if (w < 32) {  // copy16
+    uint8x16_t s0, s1;
+    do {
+      s0 = vld1q_u8(src);
+      src += src_stride;
+      s1 = vld1q_u8(src);
+      src += src_stride;
+
+      vst1q_u8(dst, s0);
+      dst += dst_stride;
+      vst1q_u8(dst, s1);
+      dst += dst_stride;
+      h -= 2;
+    } while (h != 0);
+  } else if (w == 32) {  // copy32
+    uint8x16_t s0, s1, s2, s3;
+    do {
+      s0 = vld1q_u8(src);
+      s1 = vld1q_u8(src + 16);
+      src += src_stride;
+      s2 = vld1q_u8(src);
+      s3 = vld1q_u8(src + 16);
+      src += src_stride;
+
+      vst1q_u8(dst, s0);
+      vst1q_u8(dst + 16, s1);
+      dst += dst_stride;
+      vst1q_u8(dst, s2);
+      vst1q_u8(dst + 16, s3);
+      dst += dst_stride;
+      h -= 2;
+    } while (h != 0);
+  } else {  // copy64
+    uint8x16_t s0, s1, s2, s3;
+    do {
+      s0 = vld1q_u8(src);
+      s1 = vld1q_u8(src + 16);
+      s2 = vld1q_u8(src + 32);
+      s3 = vld1q_u8(src + 48);
+      src += src_stride;
+
+      vst1q_u8(dst, s0);
+      vst1q_u8(dst + 16, s1);
+      vst1q_u8(dst + 32, s2);
+      vst1q_u8(dst + 48, s3);
+      dst += dst_stride;
+    } while (--h);
+  }
+}