| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include "av1/common/tile_common.h" |
| #include "av1/common/onyxc_int.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| |
| void av1_tile_set_row(TileInfo *tile, const AV1_COMMON *cm, int row) { |
| tile->mi_row_start = row * cm->tile_height; |
| tile->mi_row_end = AOMMIN(tile->mi_row_start + cm->tile_height, cm->mi_rows); |
| } |
| |
| void av1_tile_set_col(TileInfo *tile, const AV1_COMMON *cm, int col) { |
| tile->mi_col_start = col * cm->tile_width; |
| tile->mi_col_end = AOMMIN(tile->mi_col_start + cm->tile_width, cm->mi_cols); |
| } |
| |
| void av1_tile_init(TileInfo *tile, const AV1_COMMON *cm, int row, int col) { |
| av1_tile_set_row(tile, cm, row); |
| av1_tile_set_col(tile, cm, col); |
| } |
| |
| #if !CONFIG_EXT_TILE |
| |
| #if CONFIG_EXT_PARTITION |
| #define MIN_TILE_WIDTH_MAX_SB 2 |
| #define MAX_TILE_WIDTH_MAX_SB 32 |
| #else |
| #define MIN_TILE_WIDTH_MAX_SB 4 |
| #define MAX_TILE_WIDTH_MAX_SB 64 |
| #endif // CONFIG_EXT_PARTITION |
| |
| static int get_min_log2_tile_cols(const int max_sb_cols) { |
| int min_log2 = 0; |
| while ((MAX_TILE_WIDTH_MAX_SB << min_log2) < max_sb_cols) ++min_log2; |
| return min_log2; |
| } |
| |
| static int get_max_log2_tile_cols(const int max_sb_cols) { |
| int max_log2 = 1; |
| while ((max_sb_cols >> max_log2) >= MIN_TILE_WIDTH_MAX_SB) ++max_log2; |
| return max_log2 - 1; |
| } |
| |
| void av1_get_tile_n_bits(const int mi_cols, int *min_log2_tile_cols, |
| int *max_log2_tile_cols) { |
| const int max_sb_cols = |
| ALIGN_POWER_OF_TWO(mi_cols, MAX_MIB_SIZE_LOG2) >> MAX_MIB_SIZE_LOG2; |
| *min_log2_tile_cols = get_min_log2_tile_cols(max_sb_cols); |
| *max_log2_tile_cols = get_max_log2_tile_cols(max_sb_cols); |
| assert(*min_log2_tile_cols <= *max_log2_tile_cols); |
| } |
| #endif // !CONFIG_EXT_TILE |