FFmpeg
h265_profile_level.c
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1 /*
2  * This file is part of FFmpeg.
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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 H265ProfileDescriptor *ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
124 {
125  int i;
126 
127  if (ptl->general_profile_space)
128  return NULL;
129 
130  for (i = 0; i < FF_ARRAY_ELEMS(h265_profiles); i++) {
131  const H265ProfileDescriptor *profile = &h265_profiles[i];
132 
133  if (ptl->general_profile_idc &&
134  ptl->general_profile_idc != profile->profile_idc)
135  continue;
136  if (!ptl->general_profile_compatibility_flag[profile->profile_idc])
137  continue;
138 
139 #define check_flag(name) \
140  if (profile->name < 2) { \
141  if (profile->name != ptl->general_ ## name ## _constraint_flag) \
142  continue; \
143  }
144  check_flag(max_14bit);
145  check_flag(max_12bit);
146  check_flag(max_10bit);
147  check_flag(max_8bit);
148  check_flag(max_422chroma);
149  check_flag(max_420chroma);
150  check_flag(max_monochrome);
151  check_flag(intra);
152  check_flag(one_picture_only);
153  check_flag(lower_bit_rate);
154 #undef check_flag
155 
156  return profile;
157  }
158 
159  return NULL;
160 }
161 
162 const H265LevelDescriptor *ff_h265_guess_level(const H265RawProfileTierLevel *ptl,
163  int64_t bitrate,
164  int width, int height,
165  int slice_segments,
166  int tile_rows, int tile_cols,
167  int max_dec_pic_buffering)
168 {
169  const H265ProfileDescriptor *profile;
170  int pic_size, tier_flag, lbr_flag, hbr_factor;
171  int i;
172 
173  if (ptl)
174  profile = ff_h265_get_profile(ptl);
175  else
176  profile = NULL;
177  if (!profile) {
178  // Default to using multiplication factors for Main profile.
179  profile = &h265_profiles[4];
180  }
181 
182  pic_size = width * height;
183 
184  if (ptl) {
185  tier_flag = ptl->general_tier_flag;
186  lbr_flag = ptl->general_lower_bit_rate_constraint_flag;
187  } else {
188  tier_flag = 0;
189  lbr_flag = profile->lower_bit_rate > 0;
190  }
191  if (profile->profile_idc == 1 || profile->profile_idc == 2) {
192  hbr_factor = 1;
193  } else if (profile->high_throughput) {
194  if (profile->intra)
195  hbr_factor = 24 - 12 * lbr_flag;
196  else
197  hbr_factor = 6;
198  } else {
199  hbr_factor = 2 - lbr_flag;
200  }
201 
202  for (i = 0; i < FF_ARRAY_ELEMS(h265_levels); i++) {
203  const H265LevelDescriptor *level = &h265_levels[i];
204  int max_br, max_dpb_size;
205 
206  if (tier_flag && !level->max_br_high)
207  continue;
208 
209  if (pic_size > level->max_luma_ps)
210  continue;
211  if (width * width > 8 * level->max_luma_ps)
212  continue;
213  if (height * height > 8 * level->max_luma_ps)
214  continue;
215 
216  if (slice_segments > level->max_slice_segments_per_picture)
217  continue;
218  if (tile_rows > level->max_tile_rows)
219  continue;
220  if (tile_cols > level->max_tile_cols)
221  continue;
222 
223  if (tier_flag)
224  max_br = level->max_br_high;
225  else
226  max_br = level->max_br_main;
227  if (!max_br)
228  continue;
229  if (bitrate > (int64_t)profile->cpb_nal_factor * hbr_factor * max_br)
230  continue;
231 
232  if (pic_size <= (level->max_luma_ps >> 2))
233  max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf, 16);
234  else if (pic_size <= (level->max_luma_ps >> 1))
235  max_dpb_size = FFMIN(2 * profile->max_dpb_pic_buf, 16);
236  else if (pic_size <= (3 * level->max_luma_ps >> 2))
237  max_dpb_size = FFMIN(4 * profile->max_dpb_pic_buf / 3, 16);
238  else
239  max_dpb_size = profile->max_dpb_pic_buf;
240  if (max_dec_pic_buffering > max_dpb_size)
241  continue;
242 
243  return level;
244  }
245 
246  return NULL;
247 }
level
uint8_t level
Definition: svq3.c:204
check_flag
#define check_flag(name)
ff_h265_get_profile
const H265ProfileDescriptor * ff_h265_get_profile(const H265RawProfileTierLevel *ptl)
Definition: h265_profile_level.c:123
H265ProfileDescriptor
Definition: h265_profile_level.h:47
H265LevelDescriptor
Definition: h265_profile_level.h:27
h265_profiles
static const H265ProfileDescriptor h265_profiles[]
Definition: h265_profile_level.c:42
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
ptl
const H265RawProfileTierLevel * ptl
Definition: h265_levels.c:170
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:162
width
#define width
H265RawProfileTierLevel::general_profile_idc
uint8_t general_profile_idc
Definition: cbs_h265.h:38
bitrate
int64_t bitrate
Definition: av1_levels.c:47
tile_rows
int tile_rows
Definition: h265_levels.c:217
tile_cols
int tile_cols
Definition: av1_levels.c:73
NULL
#define NULL
Definition: coverity.c:32
H265RawProfileTierLevel::general_tier_flag
uint8_t general_tier_flag
Definition: cbs_h265.h:37
h265_levels
static const H265LevelDescriptor h265_levels[]
Definition: h265_profile_level.c:22
H265RawProfileTierLevel::general_lower_bit_rate_constraint_flag
uint8_t general_lower_bit_rate_constraint_flag
Definition: cbs_h265.h:55
h265_profile_level.h
height
#define height
slice_segments
int slice_segments
Definition: h265_levels.c:216
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:255
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
profile
int profile
Definition: mxfenc.c:2115
H265RawProfileTierLevel
Definition: cbs_h265.h:35
H265RawProfileTierLevel::general_profile_space
uint8_t general_profile_space
Definition: cbs_h265.h:36
H265RawProfileTierLevel::general_profile_compatibility_flag
uint8_t general_profile_compatibility_flag[32]
Definition: cbs_h265.h:40
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