libvpx: Pull from upstream

source/libvpx/third_party/libyuv/include/libyuv/scale.h

 /*
- *  Copyright (c) 2011 The LibYuv project authors. All Rights Reserved.
+ *  Copyright 2011 The LibYuv 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
+ *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef INCLUDE_LIBYUV_SCALE_H_
+#ifndef INCLUDE_LIBYUV_SCALE_H_  // NOLINT
 #define INCLUDE_LIBYUV_SCALE_H_
 
-#include "third_party/libyuv/include/libyuv/basic_types.h"
+#include "basic_types.h"
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
-// Supported filtering
-typedef enum {
-  kFilterNone = 0,  // Point sample; Fastest
-  kFilterBilinear = 1,  // Faster than box, but lower quality scaling down.
-  kFilterBox = 2  // Highest quality
+// Supported filtering.
+typedef enum FilterMode {
+  kFilterNone = 0,  // Point sample; Fastest.
+  kFilterLinear = 1,  // Filter horizontally only.
+  kFilterBilinear = 2,  // Faster than box, but lower quality scaling down.
+  kFilterBox = 3  // Highest quality.
 } FilterModeEnum;
 
+// Scale a YUV plane.
+LIBYUV_API
+void ScalePlane(const uint8* src, int src_stride,
+                int src_width, int src_height,
+                uint8* dst, int dst_stride,
+                int dst_width, int dst_height,
+                enum FilterMode filtering);
+
+void ScalePlane_16(const uint16* src, int src_stride,
+                   int src_width, int src_height,
+                   uint16* dst, int dst_stride,
+                   int dst_width, int dst_height,
+                   enum FilterMode filtering);
+
 // Scales a YUV 4:2:0 image from the src width and height to the
 // dst width and height.
 // If filtering is kFilterNone, a simple nearest-neighbor algorithm is
 // used. This produces basic (blocky) quality at the fastest speed.
 // If filtering is kFilterBilinear, interpolation is used to produce a better
 // quality image, at the expense of speed.
 // If filtering is kFilterBox, averaging is used to produce ever better
 // quality image, at further expense of speed.
 // Returns 0 if successful.
 
+LIBYUV_API
 int I420Scale(const uint8* src_y, int src_stride_y,
               const uint8* src_u, int src_stride_u,
               const uint8* src_v, int src_stride_v,
               int src_width, int src_height,
               uint8* dst_y, int dst_stride_y,
               uint8* dst_u, int dst_stride_u,
               uint8* dst_v, int dst_stride_v,
               int dst_width, int dst_height,
-              FilterModeEnum filtering);
+              enum FilterMode filtering);
 
-// Legacy API.  Deprecated
+LIBYUV_API
+int I420Scale_16(const uint16* src_y, int src_stride_y,
+                 const uint16* src_u, int src_stride_u,
+                 const uint16* src_v, int src_stride_v,
+                 int src_width, int src_height,
+                 uint16* dst_y, int dst_stride_y,
+                 uint16* dst_u, int dst_stride_u,
+                 uint16* dst_v, int dst_stride_v,
+                 int dst_width, int dst_height,
+                 enum FilterMode filtering);
+
+#ifdef __cplusplus
+// Legacy API.  Deprecated.
+LIBYUV_API
 int Scale(const uint8* src_y, const uint8* src_u, const uint8* src_v,
           int src_stride_y, int src_stride_u, int src_stride_v,
           int src_width, int src_height,
           uint8* dst_y, uint8* dst_u, uint8* dst_v,
           int dst_stride_y, int dst_stride_u, int dst_stride_v,
           int dst_width, int dst_height,
-          int interpolate);
+          LIBYUV_BOOL interpolate);
 
-// Legacy API.  Deprecated
-int ScaleOffset(const uint8* src, int src_width, int src_height,
-                uint8* dst, int dst_width, int dst_height, int dst_yoffset,
-                int interpolate);
+// Legacy API.  Deprecated.
+LIBYUV_API
+int ScaleOffset(const uint8* src_i420, int src_width, int src_height,
+                uint8* dst_i420, int dst_width, int dst_height, int dst_yoffset,
+                LIBYUV_BOOL interpolate);
 
-// For testing, allow disabling of optimizations.
-void SetUseReferenceImpl(int use);
+// For testing, allow disabling of specialized scalers.
+LIBYUV_API
+void SetUseReferenceImpl(LIBYUV_BOOL use);
+#endif  // __cplusplus
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
-#endif // INCLUDE_LIBYUV_SCALE_H_
+#endif  // INCLUDE_LIBYUV_SCALE_H_  NOLINT