shithub: libvpx

ref: 5362ce31ca7224815cff119f608304f77882f129
dir: /vp9/common/vp9_tile_common.h/

/*
 *  Copyright (c) 2010 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_TILE_COMMON_H_
#define VPX_VP9_COMMON_VP9_TILE_COMMON_H_

#ifdef __cplusplus
extern "C" {
#endif

struct VP9Common;

typedef struct TileInfo {
  int mi_row_start, mi_row_end;
  int mi_col_start, mi_col_end;
} TileInfo;

// initializes 'tile->mi_(row|col)_(start|end)' for (row, col) based on
// 'cm->log2_tile_(rows|cols)' & 'cm->mi_(rows|cols)'
void vp9_tile_init(TileInfo *tile, const struct VP9Common *cm, int row,
                   int col);

void vp9_tile_set_row(TileInfo *tile, const struct VP9Common *cm, int row);
void vp9_tile_set_col(TileInfo *tile, const struct VP9Common *cm, int col);

void vp9_get_tile_n_bits(int mi_cols, int *min_log2_tile_cols,
                         int *max_log2_tile_cols);

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

#endif  // VPX_VP9_COMMON_VP9_TILE_COMMON_H_