1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 12 #ifndef AOM_AV1_COMMON_TILE_COMMON_H_ 13 #define AOM_AV1_COMMON_TILE_COMMON_H_ 14 15 #ifdef __cplusplus 16 extern "C" { 17 #endif 18 19 #include "config/aom_config.h" 20 #include "aom_dsp/rect.h" 21 22 struct AV1Common; 23 struct SequenceHeader; 24 struct CommonTileParams; 25 26 #define DEFAULT_MAX_NUM_TG 1 27 28 typedef struct TileInfo { 29 int mi_row_start, mi_row_end; 30 int mi_col_start, mi_col_end; 31 int tile_row; 32 int tile_col; 33 } TileInfo; 34 35 // initializes 'tile->mi_(row|col)_(start|end)' for (row, col) based on 36 // 'cm->log2_tile_(rows|cols)' & 'cm->mi_(rows|cols)' 37 void av1_tile_init(TileInfo *tile, const struct AV1Common *cm, int row, 38 int col); 39 40 void av1_tile_set_row(TileInfo *tile, const struct AV1Common *cm, int row); 41 void av1_tile_set_col(TileInfo *tile, const struct AV1Common *cm, int col); 42 43 int av1_get_sb_rows_in_tile(struct AV1Common *cm, const TileInfo *tile); 44 int av1_get_sb_cols_in_tile(struct AV1Common *cm, const TileInfo *tile); 45 46 // Return the pixel extents of the given tile 47 PixelRect av1_get_tile_rect(const TileInfo *tile_info, 48 const struct AV1Common *cm, int is_uv); 49 50 // Define tile maximum width and area 51 // There is no maximum height since height is limited by area and width limits 52 // The minimum tile width or height is fixed at one superblock 53 #define MAX_TILE_WIDTH (4096) // Max Tile width in pixels 54 #define MAX_TILE_AREA (4096 * 2304) // Maximum tile area in pixels 55 #define MAX_TILE_AREA_LEVEL_7_AND_ABOVE (4096 * 4608) 56 57 void av1_get_uniform_tile_size(const struct AV1Common *cm, int *w, int *h); 58 void av1_get_tile_limits(struct AV1Common *const cm); 59 void av1_calculate_tile_cols(const struct SequenceHeader *const seq_params, 60 int cm_mi_rows, int cm_mi_cols, 61 struct CommonTileParams *const tiles); 62 void av1_calculate_tile_rows(const struct SequenceHeader *const seq_params, 63 int cm_mi_rows, 64 struct CommonTileParams *const tiles); 65 66 // Checks if the minimum tile_width requirement is satisfied 67 int av1_is_min_tile_width_satisfied(const struct AV1Common *cm); 68 69 #ifdef __cplusplus 70 } // extern "C" 71 #endif 72 73 #endif // AOM_AV1_COMMON_TILE_COMMON_H_ 74