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Side by Side Diff: source/libvpx/vp9/common/vp9_tile_common.c

Issue 54923004: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/
Patch Set: Created 7 years, 1 month ago
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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"
14
13 #define MIN_TILE_WIDTH_B64 4 15 #define MIN_TILE_WIDTH_B64 4
14 #define MAX_TILE_WIDTH_B64 64 16 #define MAX_TILE_WIDTH_B64 64
15 17
16 static int to_sbs(n_mis) { 18 static int to_sbs(n_mis) {
17 return mi_cols_aligned_to_sb(n_mis) >> MI_BLOCK_SIZE_LOG2; 19 return mi_cols_aligned_to_sb(n_mis) >> MI_BLOCK_SIZE_LOG2;
18 } 20 }
19 21
20 static void vp9_get_tile_offsets(int *min_tile_off, int *max_tile_off, 22 static void get_tile_offsets(int *min_tile_off, int *max_tile_off,
21 int tile_idx, int log2_n_tiles, int n_mis) { 23 int tile_idx, int log2_n_tiles, int n_mis) {
22 const int n_sbs = to_sbs(n_mis); 24 const int n_sbs = to_sbs(n_mis);
23 const int sb_off1 = (tile_idx * n_sbs) >> log2_n_tiles; 25 const int sb_off1 = (tile_idx * n_sbs) >> log2_n_tiles;
24 const int sb_off2 = ((tile_idx + 1) * n_sbs) >> log2_n_tiles; 26 const int sb_off2 = ((tile_idx + 1) * n_sbs) >> log2_n_tiles;
25 27
26 *min_tile_off = MIN(sb_off1 << 3, n_mis); 28 *min_tile_off = MIN(sb_off1 << 3, n_mis);
27 *max_tile_off = MIN(sb_off2 << 3, n_mis); 29 *max_tile_off = MIN(sb_off2 << 3, n_mis);
28 } 30 }
29 31
30 void vp9_get_tile_col_offsets(VP9_COMMON *cm, int tile_col_idx) { 32 void vp9_tile_init(TileInfo *tile, const VP9_COMMON *cm,
31 vp9_get_tile_offsets(&cm->cur_tile_mi_col_start, &cm->cur_tile_mi_col_end, 33 int row_idx, int col_idx) {
32 tile_col_idx, cm->log2_tile_cols, cm->mi_cols); 34 get_tile_offsets(&tile->mi_row_start, &tile->mi_row_end,
35 row_idx, cm->log2_tile_rows, cm->mi_rows);
36 get_tile_offsets(&tile->mi_col_start, &tile->mi_col_end,
37 col_idx, cm->log2_tile_cols, cm->mi_cols);
33 } 38 }
34 39
35 void vp9_get_tile_row_offsets(VP9_COMMON *cm, int tile_row_idx) {
36 vp9_get_tile_offsets(&cm->cur_tile_mi_row_start, &cm->cur_tile_mi_row_end,
37 tile_row_idx, cm->log2_tile_rows, cm->mi_rows);
38 }
39
40
41 void vp9_get_tile_n_bits(int mi_cols, 40 void vp9_get_tile_n_bits(int mi_cols,
42 int *min_log2_tile_cols, int *max_log2_tile_cols) { 41 int *min_log2_tile_cols, int *max_log2_tile_cols) {
43 const int sb_cols = to_sbs(mi_cols); 42 const int sb_cols = to_sbs(mi_cols);
44 int min_log2_n_tiles, max_log2_n_tiles; 43 int min_log2_n_tiles, max_log2_n_tiles;
45 44
46 for (max_log2_n_tiles = 0; 45 for (max_log2_n_tiles = 0;
47 (sb_cols >> max_log2_n_tiles) >= MIN_TILE_WIDTH_B64; 46 (sb_cols >> max_log2_n_tiles) >= MIN_TILE_WIDTH_B64;
48 max_log2_n_tiles++) {} 47 max_log2_n_tiles++) {}
49 max_log2_n_tiles--; 48 max_log2_n_tiles--;
50 if (max_log2_n_tiles < 0) 49 if (max_log2_n_tiles < 0)
51 max_log2_n_tiles = 0; 50 max_log2_n_tiles = 0;
52 51
53 for (min_log2_n_tiles = 0; 52 for (min_log2_n_tiles = 0;
54 (MAX_TILE_WIDTH_B64 << min_log2_n_tiles) < sb_cols; 53 (MAX_TILE_WIDTH_B64 << min_log2_n_tiles) < sb_cols;
55 min_log2_n_tiles++) {} 54 min_log2_n_tiles++) {}
56 55
57 assert(min_log2_n_tiles <= max_log2_n_tiles); 56 assert(min_log2_n_tiles <= max_log2_n_tiles);
58 57
59 *min_log2_tile_cols = min_log2_n_tiles; 58 *min_log2_tile_cols = min_log2_n_tiles;
60 *max_log2_tile_cols = max_log2_n_tiles; 59 *max_log2_tile_cols = max_log2_n_tiles;
61 } 60 }
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