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 21 struct AV1Common; 22 23 #define DEFAULT_MAX_NUM_TG 1 24 25 typedef struct TileInfo { 26 int mi_row_start, mi_row_end; 27 int mi_col_start, mi_col_end; 28 int tg_horz_boundary; 29 int tile_row; 30 int tile_col; 31 } TileInfo; 32 33 // initializes 'tile->mi_(row|col)_(start|end)' for (row, col) based on 34 // 'cm->log2_tile_(rows|cols)' & 'cm->mi_(rows|cols)' 35 void av1_tile_init(TileInfo *tile, const struct AV1Common *cm, int row, 36 int col); 37 38 void av1_tile_set_row(TileInfo *tile, const struct AV1Common *cm, int row); 39 void av1_tile_set_col(TileInfo *tile, const struct AV1Common *cm, int col); 40 void av1_get_tile_n_bits(int mi_cols, int *min_log2_tile_cols, 41 int *max_log2_tile_cols); 42 43 // Calculate the correct tile size (width or height) for (1 << log2_tile_num) 44 // tiles horizontally or vertically in the frame. 45 int get_tile_size(int mi_frame_size, int log2_tile_num, int *ntiles); 46 47 int av1_get_sb_rows_in_tile(struct AV1Common *cm, TileInfo tile); 48 int av1_get_sb_cols_in_tile(struct AV1Common *cm, TileInfo tile); 49 50 typedef struct { 51 int left, top, right, bottom; 52 } AV1PixelRect; 53 54 // Return the pixel extents of the given tile 55 AV1PixelRect av1_get_tile_rect(const TileInfo *tile_info, 56 const struct AV1Common *cm, int is_uv); 57 58 // Define tile maximum width and area 59 // There is no maximum height since height is limited by area and width limits 60 // The minimum tile width or height is fixed at one superblock 61 #define MAX_TILE_WIDTH (4096) // Max Tile width in pixels 62 #define MAX_TILE_AREA (4096 * 2304) // Maximum tile area in pixels 63 64 void av1_get_tile_limits(struct AV1Common *const cm); 65 void av1_calculate_tile_cols(struct AV1Common *const cm); 66 void av1_calculate_tile_rows(struct AV1Common *const cm); 67 68 #ifdef __cplusplus 69 } // extern "C" 70 #endif 71 72 #endif // AOM_AV1_COMMON_TILE_COMMON_H_ 73