GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/h265_profile_level.c Lines: 66 80 82.5 %
Date: 2019-11-22 03:34:36 Branches: 83 102 81.4 %

Line Branch Exec Source
1
/*
2
 * This file is part of FFmpeg.
3
 *
4
 * FFmpeg is free software; you can redistribute it and/or
5
 * modify it under the terms of the GNU Lesser General Public
6
 * License as published by the Free Software Foundation; either
7
 * version 2.1 of the License, or (at your option) any later version.
8
 *
9
 * FFmpeg is distributed in the hope that it will be useful,
10
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12
 * Lesser General Public License for more details.
13
 *
14
 * You should have received a copy of the GNU Lesser General Public
15
 * License along with FFmpeg; if not, write to the Free Software
16
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
 */
18
19
#include "h265_profile_level.h"
20
21
22
static const H265LevelDescriptor h265_levels[] = {
23
    // Name             CpbFactor-Main    MaxSliceSegmentsPerPicture
24
    // |  level_idc            | CpbFactor-High           MaxLumaSr      BrFactor-High
25
    // |      |   MaxLumaPs    |       |      | MaxTileRows   |   BrFactor-Main | MinCr-Main
26
    // |      |      |         |       |      |   | MaxTileCols         |       |    |  MinCr-High
27
    { "1",    30,    36864,    350,      0,  16,  1,  1,     552960,    128,      0, 2, 2 },
28
    { "2",    60,   122880,   1500,      0,  16,  1,  1,    3686400,   1500,      0, 2, 2 },
29
    { "2.1",  63,   245760,   3000,      0,  20,  1,  1,    7372800,   3000,      0, 2, 2 },
30
    { "3",    90,   552960,   6000,      0,  30,  2,  2,   16588800,   6000,      0, 2, 2 },
31
    { "3.1",  93,   983040,  10000,      0,  40,  3,  3,   33177600,  10000,      0, 2, 2 },
32
    { "4",   120,  2228224,  12000,  30000,  75,  5,  5,   66846720,  12000,  30000, 4, 4 },
33
    { "4.1", 123,  2228224,  20000,  50000,  75,  5,  5,  133693440,  20000,  50000, 4, 4 },
34
    { "5",   150,  8912896,  25000, 100000, 200, 11, 10,  267386880,  25000, 100000, 6, 4 },
35
    { "5.1", 153,  8912896,  40000, 160000, 200, 11, 10,  534773760,  40000, 160000, 8, 4 },
36
    { "5.2", 156,  8912896,  60000, 240000, 200, 11, 10, 1069547520,  60000, 240000, 8, 4 },
37
    { "6",   180, 35651584,  60000, 240000, 600, 22, 20, 1069547520,  60000, 240000, 8, 4 },
38
    { "6.1", 183, 35651584, 120000, 480000, 600, 22, 20, 2139095040, 120000, 480000, 8, 4 },
39
    { "6.2", 186, 35651584, 240000, 800000, 600, 22, 20, 4278190080, 240000, 800000, 6, 4 },
40
};
41
42
static const H265ProfileDescriptor h265_profiles[] = {
43
    // profile_idc   8bit       one-picture
44
    //   HT-profile  | 422chroma    | lower-bit-rate
45
    //   |  14bit    |  | 420chroma |  | CpbVclFactor     MinCrScaleFactor
46
    //   |  |  12bit |  |  | monochrome|    | CpbNalFactor    | maxDpbPicBuf
47
    //   |  |  |  10bit |  |  | intra  |    |     | FormatCapabilityFactor
48
    { "Monochrome", //  |  |  |  |  |  |    |     |     |     |   |
49
      4, 0, 2, 1, 1, 1, 1, 1, 1, 0, 0, 1,  667,  733, 1.000, 1.0, 6 },
50
    { "Monochrome 10",
51
      4, 0, 2, 1, 1, 0, 1, 1, 1, 0, 0, 1,  833,  917, 1.250, 1.0, 6 },
52
    { "Monochrome 12",
53
      4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0, 6 },
54
    { "Monochrome 16",
55
      4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0, 6 },
56
    { "Main",
57
      1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 },
58
    { "Screen-Extended Main",
59
      9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0, 7 },
60
    { "Main 10",
61
      2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 0, 2, 1000, 1100, 1.875, 1.0, 6 },
62
    { "Screen-Extended Main 10",
63
      9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0, 7 },
64
    { "Main 12",
65
      4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0, 6 },
66
    { "Main Still Picture",
67
      3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0, 6 },
68
    { "Main 10 Still Picture",
69
      2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1000, 1100, 1.875, 1.0, 6 },
70
    { "Main 4:2:2 10",
71
      4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5, 6 },
72
    { "Main 4:2:2 12",
73
      4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 },
74
    { "Main 4:4:4",
75
      4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 },
76
    { "High Throughput 4:4:4",
77
      5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 6 },
78
    { "Screen-Extended Main 4:4:4",
79
      9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 },
80
    { "Screen-Extended High Throughput 4:4:4",
81
      9, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5, 7 },
82
    { "Main 4:4:4 10",
83
      4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 },
84
    { "High Throughput 4:4:4 10",
85
      5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 6 },
86
    { "Screen-Extended Main 4:4:4 10",
87
      9, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 },
88
    { "Screen-Extended High Throughput 4:4:4 10",
89
      9, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5, 7 },
90
    { "Main 4:4:4 12",
91
      4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5, 6 },
92
    { "High Throughput 4:4:4 14",
93
      5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 6 },
94
    { "Screen-Extended High Throughput 4:4:4 14",
95
      9, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5, 7 },
96
    { "Main Intra",
97
      4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0, 6 },
98
    { "Main 10 Intra",
99
      4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0, 6 },
100
    { "Main 12 Intra",
101
      4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0, 6 },
102
    { "Main 4:2:2 10 Intra",
103
      4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5, 6 },
104
    { "Main 4:2:2 12 Intra",
105
      4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 },
106
    { "Main 4:4:4 Intra",
107
      4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5, 6 },
108
    { "Main 4:4:4 10 Intra",
109
      4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5, 6 },
110
    { "Main 4:4:4 12 Intra",
111
      4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5, 6 },
112
    { "Main 4:4:4 16 Intra",
113
      4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 },
114
    { "Main 4:4:4 Still Picture",
115
      4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5, 6 },
116
    { "Main 4:4:4 16 Still Picture",
117
      4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 4000, 4400, 6.000, 0.5, 6 },
118
    { "High Throughput 4:4:4 16 Intra",
119
      5, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5, 6 },
120
};
121
122
123
const H265LevelDescriptor *ff_h265_get_level(int level_idc)
124
{
125
    int i;
126
127
    for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
128
        if (h265_levels[i].level_idc == level_idc)
129
            return &h265_levels[i];
130
    }
131
132
    return NULL;
133
}
134
135
94
const H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
136
{
137
    int i;
138
139
94
    if (ptl->general_profile_space)
140
        return NULL;
141
142
726
    for (i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) {
143
726
        const H265ProfileDescriptor *profile = &h265_profiles[i];
144
145
726
        if (ptl->general_profile_idc &&
146
726
            ptl->general_profile_idc != profile->profile_idc)
147
544
            continue;
148
182
        if (!ptl->general_profile_compatibility_flag[profile->profile_idc])
149
            continue;
150
151
#define check_flag(name) \
152
        if (profile->name < 2) { \
153
            if (profile->name != ptl->general_ ## name ## _constraint_flag) \
154
                continue; \
155
        }
156

182
        check_flag(max_14bit);
157

182
        check_flag(max_12bit);
158

158
        check_flag(max_10bit);
159

118
        check_flag(max_8bit);
160

118
        check_flag(max_422chroma);
161

114
        check_flag(max_420chroma);
162

102
        check_flag(max_monochrome);
163

98
        check_flag(intra);
164

94
        check_flag(one_picture_only);
165

94
        check_flag(lower_bit_rate);
166
#undef check_flag
167
168
94
        return profile;
169
    }
170
171
    return NULL;
172
}
173
174
78
const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl,
175
                                               int64_t bitrate,
176
                                               int width, int height,
177
                                               int slice_segments,
178
                                               int tile_rows, int tile_cols,
179
                                               int max_dec_pic_buffering)
180
{
181
    const H265ProfileDescriptor *profile;
182
    int pic_size, tier_flag, lbr_flag, hbr_factor;
183
    int i;
184
185
78
    if (ptl)
186
78
        profile = ff_h265_get_profile(ptl);
187
    else
188
        profile = NULL;
189
78
    if (!profile) {
190
        // Default to using multiplication factors for Main profile.
191
        profile = &h265_profiles[3];
192
    }
193
194
78
    pic_size = width * height;
195
196
78
    if (ptl) {
197
78
        tier_flag = ptl->general_tier_flag;
198
78
        lbr_flag  = ptl->general_lower_bit_rate_constraint_flag;
199
    } else {
200
        tier_flag = 0;
201
        lbr_flag  = profile->lower_bit_rate > 0;
202
    }
203

78
    if (profile->profile_idc == 1 || profile->profile_idc == 2) {
204
70
        hbr_factor = 1;
205
8
    } else if (profile->high_throughput) {
206
4
        if (profile->intra)
207
            hbr_factor = 24 - 12 * lbr_flag;
208
        else
209
4
            hbr_factor = 6;
210
    } else {
211
4
        hbr_factor = 2 - lbr_flag;
212
    }
213
214
541
    for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
215
535
        const H265LevelDescriptor *level = &h265_levels[i];
216
        int max_br, max_dpb_size;
217
218

535
        if (tier_flag && !level->max_br_high)
219
15
            continue;
220
221
520
        if (pic_size > level->max_luma_ps)
222
130
            continue;
223
390
        if (width  * width  > 8 * level->max_luma_ps)
224
49
            continue;
225
341
        if (height * height > 8 * level->max_luma_ps)
226
55
            continue;
227
228
286
        if (slice_segments > level->max_slice_segments_per_picture)
229
49
            continue;
230
237
        if (tile_rows > level->max_tile_rows)
231
49
            continue;
232
188
        if (tile_cols > level->max_tile_cols)
233
11
            continue;
234
235
177
        if (tier_flag)
236
8
            max_br = level->max_br_high;
237
        else
238
169
            max_br = level->max_br_main;
239
177
        if (!max_br)
240
            continue;
241
177
        if (bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br)
242
91
            continue;
243
244
86
        if (pic_size <= (level->max_luma_ps >> 2))
245
51
            max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf, 16);
246
35
        else if (pic_size <= (level->max_luma_ps >> 1))
247
7
            max_dpb_size = FFMIN(2 * profile->max_dpb_pic_buf, 16);
248
28
        else if (pic_size <= (3 * level->max_luma_ps >> 2))
249
8
            max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf / 3, 16);
250
        else
251
20
            max_dpb_size = profile->max_dpb_pic_buf;
252
86
        if (max_dec_pic_buffering > max_dpb_size)
253
14
            continue;
254
255
72
        return level;
256
    }
257
258
6
    return NULL;
259
}