/*
  *  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
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef INCLUDE_LIBYUV_SCALE_H_  // NOLINT
 #define INCLUDE_LIBYUV_SCALE_H_
 
 #include "libyuv/basic_types.h"
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
 // Supported filtering
 enum FilterMode {
   kFilterNone = 0,  // Point sample; Fastest
   kFilterBilinear = 1,  // Faster than box, but lower quality scaling down.
   kFilterBox = 2  // Highest quality
 };
 
 // Scale a YUV plane.
 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,
                 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.
 
 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,
               FilterMode filtering);
 
 // Legacy API.  Deprecated
 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,
           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,
                 bool interpolate);
 
 // For testing, allow disabling of optimizations.
 void SetUseReferenceImpl(bool use);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // INCLUDE_LIBYUV_SCALE_H_  NOLINT