chromium/third_party/libvpx/source/libvpx/vp9/common/vp9_scale.h

/*
 *  Copyright (c) 2013 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_VP9_COMMON_VP9_SCALE_H_
#define VPX_VP9_COMMON_VP9_SCALE_H_

#include "vp9/common/vp9_mv.h"
#include "vpx_dsp/vpx_convolve.h"

#ifdef __cplusplus
extern "C" {
#endif

#define REF_SCALE_SHIFT …
#define REF_NO_SCALE …
#define REF_INVALID_SCALE …

struct scale_factors { … };

MV32 vp9_scale_mv(const MV *mv, int x, int y, const struct scale_factors *sf);

#if CONFIG_VP9_HIGHBITDEPTH
void vp9_setup_scale_factors_for_frame(struct scale_factors *sf, int other_w,
                                       int other_h, int this_w, int this_h,
                                       int use_highbd);
#else
void vp9_setup_scale_factors_for_frame(struct scale_factors *sf, int other_w,
                                       int other_h, int this_w, int this_h);
#endif

static INLINE int vp9_is_valid_scale(const struct scale_factors *sf) { … }

static INLINE int vp9_is_scaled(const struct scale_factors *sf) { … }

static INLINE int valid_ref_frame_size(int ref_width, int ref_height,
                                       int this_width, int this_height) { … }

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VPX_VP9_COMMON_VP9_SCALE_H_