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1 /* | 1 /* |
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. | 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "vp9/common/vp9_tile_common.h" | 11 #include "vp9/common/vp9_tile_common.h" |
12 | 12 |
13 #include "vp9/common/vp9_onyxc_int.h" | 13 #include "vp9/common/vp9_onyxc_int.h" |
14 | 14 |
15 #define MIN_TILE_WIDTH_B64 4 | 15 #define MIN_TILE_WIDTH_B64 4 |
16 #define MAX_TILE_WIDTH_B64 64 | 16 #define MAX_TILE_WIDTH_B64 64 |
17 | 17 |
18 static int get_tile_offset(int idx, int mis, int log2) { | 18 static int get_tile_offset(int idx, int mis, int log2) { |
19 const int sb_cols = mi_cols_aligned_to_sb(mis) >> MI_BLOCK_SIZE_LOG2; | 19 const int sb_cols = mi_cols_aligned_to_sb(mis) >> MI_BLOCK_SIZE_LOG2; |
20 const int offset = ((idx * sb_cols) >> log2) << MI_BLOCK_SIZE_LOG2; | 20 const int offset = ((idx * sb_cols) >> log2) << MI_BLOCK_SIZE_LOG2; |
21 return MIN(offset, mis); | 21 return MIN(offset, mis); |
22 } | 22 } |
23 | 23 |
24 void vp9_tile_init(TileInfo *tile, const VP9_COMMON *cm, int row, int col) { | 24 void vp9_tile_set_row(TileInfo *tile, const VP9_COMMON *cm, int row) { |
25 tile->mi_row_start = get_tile_offset(row, cm->mi_rows, cm->log2_tile_rows); | 25 tile->mi_row_start = get_tile_offset(row, cm->mi_rows, cm->log2_tile_rows); |
26 tile->mi_row_end = get_tile_offset(row + 1, cm->mi_rows, cm->log2_tile_rows); | 26 tile->mi_row_end = get_tile_offset(row + 1, cm->mi_rows, cm->log2_tile_rows); |
| 27 } |
| 28 |
| 29 void vp9_tile_set_col(TileInfo *tile, const VP9_COMMON *cm, int col) { |
27 tile->mi_col_start = get_tile_offset(col, cm->mi_cols, cm->log2_tile_cols); | 30 tile->mi_col_start = get_tile_offset(col, cm->mi_cols, cm->log2_tile_cols); |
28 tile->mi_col_end = get_tile_offset(col + 1, cm->mi_cols, cm->log2_tile_cols); | 31 tile->mi_col_end = get_tile_offset(col + 1, cm->mi_cols, cm->log2_tile_cols); |
29 } | 32 } |
30 | 33 |
| 34 void vp9_tile_init(TileInfo *tile, const VP9_COMMON *cm, int row, int col) { |
| 35 vp9_tile_set_row(tile, cm, row); |
| 36 vp9_tile_set_col(tile, cm, col); |
| 37 } |
| 38 |
31 void vp9_get_tile_n_bits(int mi_cols, | 39 void vp9_get_tile_n_bits(int mi_cols, |
32 int *min_log2_tile_cols, int *max_log2_tile_cols) { | 40 int *min_log2_tile_cols, int *max_log2_tile_cols) { |
33 const int sb_cols = mi_cols_aligned_to_sb(mi_cols) >> MI_BLOCK_SIZE_LOG2; | 41 const int sb_cols = mi_cols_aligned_to_sb(mi_cols) >> MI_BLOCK_SIZE_LOG2; |
34 int min_log2 = 0, max_log2 = 0; | 42 int min_log2 = 0, max_log2 = 0; |
35 | 43 |
36 // max | 44 // max |
37 while ((sb_cols >> max_log2) >= MIN_TILE_WIDTH_B64) | 45 while ((sb_cols >> max_log2) >= MIN_TILE_WIDTH_B64) |
38 ++max_log2; | 46 ++max_log2; |
39 --max_log2; | 47 --max_log2; |
40 if (max_log2 < 0) | 48 if (max_log2 < 0) |
41 max_log2 = 0; | 49 max_log2 = 0; |
42 | 50 |
43 // min | 51 // min |
44 while ((MAX_TILE_WIDTH_B64 << min_log2) < sb_cols) | 52 while ((MAX_TILE_WIDTH_B64 << min_log2) < sb_cols) |
45 ++min_log2; | 53 ++min_log2; |
46 | 54 |
47 assert(min_log2 <= max_log2); | 55 assert(min_log2 <= max_log2); |
48 | 56 |
49 *min_log2_tile_cols = min_log2; | 57 *min_log2_tile_cols = min_log2; |
50 *max_log2_tile_cols = max_log2; | 58 *max_log2_tile_cols = max_log2; |
51 } | 59 } |
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