FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
h265_profile_level.c
Go to the documentation of this file.
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 |
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 },
50  { "Monochrome 12",
51  4, 0, 2, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1000, 1100, 1.500, 1.0 },
52  { "Monochrome 16",
53  4, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1333, 1467, 2.000, 1.0 },
54  { "Main",
55  1, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0 },
56  { "Screen-Extended Main",
57  9, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.500, 1.0 },
58  { "Main 10",
59  2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.875, 1.0 },
60  { "Screen-Extended Main 10",
61  9, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1000, 1100, 1.875, 1.0 },
62  { "Main 12",
63  4, 0, 2, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1500, 1650, 2.250, 1.0 },
64  { "Main Still Picture",
65  3, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1000, 1100, 1.500, 1.0 },
66  { "Main 4:2:2 10",
67  4, 0, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1667, 1833, 2.500, 0.5 },
68  { "Main 4:2:2 12",
69  4, 0, 2, 1, 0, 0, 1, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
70  { "Main 4:4:4",
71  4, 0, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
72  { "High Throughput 4:4:4",
73  5, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
74  { "Screen-Extended Main 4:4:4",
75  9, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
76  { "Screen-Extended High Throughput 4:4:4",
77  9, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 2000, 2200, 3.000, 0.5 },
78  { "Main 4:4:4 10",
79  4, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
80  { "High Throughput 4:4:4 10",
81  5, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
82  { "Screen-Extended Main 4:4:4 10",
83  9, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
84  { "Screen-Extended High Throughput 4:4:4 10",
85  9, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2500, 2750, 3.750, 0.5 },
86  { "Main 4:4:4 12",
87  4, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1, 3000, 3300, 4.500, 0.5 },
88  { "High Throughput 4:4:4 14",
89  5, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5 },
90  { "Screen-Extended High Throughput 4:4:4 14",
91  9, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 3500, 3850, 5.250, 0.5 },
92  { "Main Intra",
93  4, 0, 2, 1, 1, 1, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.500, 1.0 },
94  { "Main 10 Intra",
95  4, 0, 2, 1, 1, 0, 1, 1, 0, 1, 0, 2, 1000, 1100, 1.875, 1.0 },
96  { "Main 12 Intra",
97  4, 0, 2, 1, 0, 0, 1, 1, 0, 1, 0, 2, 1500, 1650, 2.250, 1.0 },
98  { "Main 4:2:2 10 Intra",
99  4, 0, 2, 1, 1, 0, 1, 0, 0, 1, 0, 2, 1667, 1833, 2.500, 0.5 },
100  { "Main 4:2:2 12 Intra",
101  4, 0, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5 },
102  { "Main 4:4:4 Intra",
103  4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 0, 2, 2000, 2200, 3.000, 0.5 },
104  { "Main 4:4:4 10 Intra",
105  4, 0, 2, 1, 1, 0, 0, 0, 0, 1, 0, 2, 2500, 2750, 3.750, 0.5 },
106  { "Main 4:4:4 12 Intra",
107  4, 0, 2, 1, 0, 0, 0, 0, 0, 1, 0, 2, 3000, 3300, 4.500, 0.5 },
108  { "Main 4:4:4 16 Intra",
109  4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5 },
110  { "Main 4:4:4 Still Picture",
111  4, 0, 2, 1, 1, 1, 0, 0, 0, 1, 1, 2, 2000, 2200, 3.000, 0.5 },
112  { "Main 4:4:4 16 Still Picture",
113  4, 0, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 4000, 4400, 6.000, 0.5 },
114  { "High Throughput 4:4:4 16 Intra",
115  5, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 4000, 4400, 6.000, 0.5 },
116 };
117 
118 
119 const H265LevelDescriptor *ff_h265_get_level(int level_idc)
120 {
121  int i;
122 
123  for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
124  if (h265_levels[i].level_idc == level_idc)
125  return &h265_levels[i];
126  }
127 
128  return NULL;
129 }
130 
131 const H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
132 {
133  int i;
134 
135  if (ptl->general_profile_space)
136  return NULL;
137 
138  for (i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) {
139  const H265ProfileDescriptor *profile = &h265_profiles[i];
140 
141  if (ptl->general_profile_idc &&
142  ptl->general_profile_idc != profile->profile_idc)
143  continue;
144  if (!ptl->general_profile_compatibility_flag[profile->profile_idc])
145  continue;
146 
147 #define check_flag(name) \
148  if (profile->name < 2) { \
149  if (profile->name != ptl->general_ ## name ## _constraint_flag) \
150  continue; \
151  }
152  check_flag(max_14bit);
153  check_flag(max_12bit);
154  check_flag(max_10bit);
155  check_flag(max_8bit);
156  check_flag(max_422chroma);
157  check_flag(max_420chroma);
158  check_flag(max_monochrome);
159  check_flag(intra);
160  check_flag(one_picture_only);
161  check_flag(lower_bit_rate);
162 #undef check_flag
163 
164  return profile;
165  }
166 
167  return NULL;
168 }
169 
170 const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl,
171  int64_t bitrate,
172  int width, int height,
173  int slice_segments,
174  int tile_rows, int tile_cols,
175  int max_dec_pic_buffering)
176 {
177  const H265ProfileDescriptor *profile;
178  int pic_size, lbr_flag, hbr_factor;
179  int i;
180 
181  if (ptl)
182  profile = ff_h265_get_profile(ptl);
183  else
184  profile = NULL;
185  if (!profile) {
186  // Default to using multiplication factors for Main profile.
187  profile = &h265_profiles[3];
188  }
189 
190  pic_size = width * height;
191 
192  if (ptl)
193  lbr_flag = ptl->general_lower_bit_rate_constraint_flag;
194  else
195  lbr_flag = profile->lower_bit_rate > 0;
196  if (profile->profile_idc == 1 || profile->profile_idc == 2) {
197  hbr_factor = 1;
198  } else if (profile->high_throughput) {
199  if (profile->intra)
200  hbr_factor = 24 - 12 * lbr_flag;
201  else
202  hbr_factor = 6;
203  } else {
204  hbr_factor = 2 - lbr_flag;
205  }
206 
207  for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
208  const H265LevelDescriptor *level = &h265_levels[i];
209  int max_br, max_dpb_size;
210 
211  if (pic_size > level->max_luma_ps)
212  continue;
213  if (width * width > 8 * level->max_luma_ps)
214  continue;
215  if (height * height > 8 * level->max_luma_ps)
216  continue;
217 
218  if (slice_segments > level->max_slice_segments_per_picture)
219  continue;
220  if (tile_rows > level->max_tile_rows)
221  continue;
222  if (tile_cols > level->max_tile_cols)
223  continue;
224 
225  if (ptl && ptl->general_tier_flag)
226  max_br = level->max_br_high;
227  else
228  max_br = level->max_br_main;
229  if (!max_br)
230  continue;
231  if (bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br)
232  continue;
233 
234  if (pic_size < (level->max_luma_ps >> 2))
235  max_dpb_size = 16;
236  else if (pic_size < (level->max_luma_ps >> 1))
237  max_dpb_size = 14;
238  else if (pic_size < (3 * level->max_luma_ps >> 2))
239  max_dpb_size = 9;
240  else
241  max_dpb_size = 7;
242  if (max_dec_pic_buffering > max_dpb_size)
243  continue;
244 
245  return level;
246  }
247 
248  return NULL;
249 }
NULL
#define NULL
Definition: coverity.c:32
h265_levels
static const H265LevelDescriptor h265_levels[]
Definition: h265_profile_level.c:22
h265_profiles
static const H265ProfileDescriptor h265_profiles[]
Definition: h265_profile_level.c:42
H265RawProfileTierLevel::general_profile_idc
uint8_t general_profile_idc
Definition: cbs_h265.h:47
level_idc
int level_idc
Definition: h264_levels.c:25
height
#define height
H265RawProfileTierLevel::general_tier_flag
uint8_t general_tier_flag
Definition: cbs_h265.h:46
width
#define width
h265_profile_level.h
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:38
ff_h265_guess_level
const H265LevelDescriptor * ff_h265_guess_level(const H265RawProfileTierLevel *ptl, int64_t bitrate, int width, int height, int slice_segments, int tile_rows, int tile_cols, int max_dec_pic_buffering)
Guess the level of a stream from some parameters.
Definition: h265_profile_level.c:170
H265RawProfileTierLevel::general_lower_bit_rate_constraint_flag
uint8_t general_lower_bit_rate_constraint_flag
Definition: cbs_h265.h:64
H265RawProfileTierLevel::general_profile_compatibility_flag
uint8_t general_profile_compatibility_flag[32]
Definition: cbs_h265.h:49
profile
mfxU16 profile
Definition: qsvenc.c:44
level
uint8_t level
Definition: svq3.c:207
bitrate
int64_t bitrate
Definition: h264_levels.c:89
check_flag
#define check_flag(name)
H265RawProfileTierLevel::general_profile_space
uint8_t general_profile_space
Definition: cbs_h265.h:45
ff_h265_get_level
const H265LevelDescriptor * ff_h265_get_level(int level_idc)
Definition: h265_profile_level.c:119
H265LevelDescriptor::max_slice_segments_per_picture
uint16_t max_slice_segments_per_picture
Definition: h265_profile_level.h:35
ff_h265_get_profile
const H265ProfileDescriptor * ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
Definition: h265_profile_level.c:131
Generated on Tue Nov 6 2018 18:11:06 for FFmpeg by   doxygen 1.8.6