move vp9_scale_and_extend_frame_c to vp9_frame_scale.c

this is similar to the x86 configuration and helps mitigate an issue
with a circular dependency between this function and the ssse3 variant
causing an outsized increase in binary size (~300K for chrome)
chrome.dll:
.text 255B000 -> 252B000
.data 7B000 -> 75000
-221184 bytes

BUG=chromium:697956

Change-Id: Ic95b142ecd62dd4f1795788aa27dd8fab59b708c

1 files changed, 54 insertions, 0 deletions

diff --git a/vp9/encoder/vp9_frame_scale.c b/vp9/encoder/vp9_frame_scale.c
new file mode 100644
index 000000000..349e7bd41
--- /dev/null
+++ b/vp9/encoder/vp9_frame_scale.c
@@ -0,0 +1,54 @@
+/*
+ *  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.
+ */
+
+#include "./vp9_rtcd.h"
+#include "./vpx_dsp_rtcd.h"
+#include "./vpx_scale_rtcd.h"
+#include "vp9/common/vp9_blockd.h"
+#include "vpx_dsp/vpx_filter.h"
+#include "vpx_scale/yv12config.h"
+
+void vp9_scale_and_extend_frame_c(const YV12_BUFFER_CONFIG *src,
+                                  YV12_BUFFER_CONFIG *dst) {
+  const int src_w = src->y_crop_width;
+  const int src_h = src->y_crop_height;
+  const int dst_w = dst->y_crop_width;
+  const int dst_h = dst->y_crop_height;
+  const uint8_t *const srcs[3] = { src->y_buffer, src->u_buffer,
+                                   src->v_buffer };
+  const int src_strides[3] = { src->y_stride, src->uv_stride, src->uv_stride };
+  uint8_t *const dsts[3] = { dst->y_buffer, dst->u_buffer, dst->v_buffer };
+  const int dst_strides[3] = { dst->y_stride, dst->uv_stride, dst->uv_stride };
+  const InterpKernel *const kernel = vp9_filter_kernels[EIGHTTAP];
+  int x, y, i;
+
+  for (i = 0; i < MAX_MB_PLANE; ++i) {
+    const int factor = (i == 0 || i == 3 ? 1 : 2);
+    const int src_stride = src_strides[i];
+    const int dst_stride = dst_strides[i];
+    for (y = 0; y < dst_h; y += 16) {
+      const int y_q4 = y * (16 / factor) * src_h / dst_h;
+      for (x = 0; x < dst_w; x += 16) {
+        const int x_q4 = x * (16 / factor) * src_w / dst_w;
+        const uint8_t *src_ptr = srcs[i] +
+                                 (y / factor) * src_h / dst_h * src_stride +
+                                 (x / factor) * src_w / dst_w;
+        uint8_t *dst_ptr = dsts[i] + (y / factor) * dst_stride + (x / factor);
+
+        vpx_scaled_2d(src_ptr, src_stride, dst_ptr, dst_stride,
+                      kernel[x_q4 & 0xf], 16 * src_w / dst_w,
+                      kernel[y_q4 & 0xf], 16 * src_h / dst_h, 16 / factor,
+                      16 / factor);
+      }
+    }
+  }
+
+  vpx_extend_frame_borders(dst);
+}