1 /*****************************************************************************
2 * set: header writing
3 *****************************************************************************
4 * Copyright (C) 2003-2021 x264 project
5 *
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7 * Loren Merritt <lorenm@u.washington.edu>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
22 *
23 * This program is also available under a commercial proprietary license.
24 * For more information, contact us at licensing@x264.com.
25 *****************************************************************************/
26
27 #include "common/common.h"
28 #include "set.h"
29
30 #define bs_write_ue bs_write_ue_big
31
32 // Indexed by pic_struct values
33 static const uint8_t num_clock_ts[10] = { 0, 1, 1, 1, 2, 2, 3, 3, 2, 3 };
34 static const uint8_t avcintra_uuid[] = {0xF7, 0x49, 0x3E, 0xB3, 0xD4, 0x00, 0x47, 0x96, 0x86, 0x86, 0xC9, 0x70, 0x7B, 0x64, 0x37, 0x2A};
35
transpose(uint8_t * buf,int w)36 static void transpose( uint8_t *buf, int w )
37 {
38 for( int i = 0; i < w; i++ )
39 for( int j = 0; j < i; j++ )
40 XCHG( uint8_t, buf[w*i+j], buf[w*j+i] );
41 }
42
scaling_list_write(bs_t * s,x264_sps_t * sps,int idx)43 static void scaling_list_write( bs_t *s, x264_sps_t *sps, int idx )
44 {
45 const int len = idx<4 ? 16 : 64;
46 const uint8_t *zigzag = idx<4 ? x264_zigzag_scan4[0] : x264_zigzag_scan8[0];
47 const uint8_t *list = sps->scaling_list[idx];
48 const uint8_t *def_list = (idx==CQM_4IC) ? sps->scaling_list[CQM_4IY]
49 : (idx==CQM_4PC) ? sps->scaling_list[CQM_4PY]
50 : (idx==CQM_8IC+4) ? sps->scaling_list[CQM_8IY+4]
51 : (idx==CQM_8PC+4) ? sps->scaling_list[CQM_8PY+4]
52 : x264_cqm_jvt[idx];
53 if( !memcmp( list, def_list, len ) )
54 bs_write1( s, 0 ); // scaling_list_present_flag
55 else if( !memcmp( list, x264_cqm_jvt[idx], len ) )
56 {
57 bs_write1( s, 1 ); // scaling_list_present_flag
58 bs_write_se( s, -8 ); // use jvt list
59 }
60 else
61 {
62 int run;
63 bs_write1( s, 1 ); // scaling_list_present_flag
64
65 // try run-length compression of trailing values
66 for( run = len; run > 1; run-- )
67 if( list[zigzag[run-1]] != list[zigzag[run-2]] )
68 break;
69 if( run < len && len - run < bs_size_se( (int8_t)-list[zigzag[run]] ) )
70 run = len;
71
72 for( int j = 0; j < run; j++ )
73 bs_write_se( s, (int8_t)(list[zigzag[j]] - (j>0 ? list[zigzag[j-1]] : 8)) ); // delta
74
75 if( run < len )
76 bs_write_se( s, (int8_t)-list[zigzag[run]] );
77 }
78 }
79
x264_sei_write(bs_t * s,uint8_t * payload,int payload_size,int payload_type)80 void x264_sei_write( bs_t *s, uint8_t *payload, int payload_size, int payload_type )
81 {
82 int i;
83
84 bs_realign( s );
85
86 for( i = 0; i <= payload_type-255; i += 255 )
87 bs_write( s, 8, 255 );
88 bs_write( s, 8, payload_type-i );
89
90 for( i = 0; i <= payload_size-255; i += 255 )
91 bs_write( s, 8, 255 );
92 bs_write( s, 8, payload_size-i );
93
94 for( i = 0; i < payload_size; i++ )
95 bs_write( s, 8, payload[i] );
96
97 bs_rbsp_trailing( s );
98 bs_flush( s );
99 }
100
x264_sps_init(x264_sps_t * sps,int i_id,x264_param_t * param)101 void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
102 {
103 int csp = param->i_csp & X264_CSP_MASK;
104
105 sps->i_id = i_id;
106 sps->i_mb_width = ( param->i_width + 15 ) / 16;
107 sps->i_mb_height= ( param->i_height + 15 ) / 16;
108 sps->b_frame_mbs_only = !(param->b_interlaced || param->b_fake_interlaced);
109 if( !sps->b_frame_mbs_only )
110 sps->i_mb_height = ( sps->i_mb_height + 1 ) & ~1;
111 sps->i_chroma_format_idc = csp >= X264_CSP_I444 ? CHROMA_444 :
112 csp >= X264_CSP_I422 ? CHROMA_422 :
113 csp >= X264_CSP_I420 ? CHROMA_420 : CHROMA_400;
114
115 sps->b_qpprime_y_zero_transform_bypass = param->rc.i_rc_method == X264_RC_CQP && param->rc.i_qp_constant == 0;
116 if( sps->b_qpprime_y_zero_transform_bypass || sps->i_chroma_format_idc == CHROMA_444 )
117 sps->i_profile_idc = PROFILE_HIGH444_PREDICTIVE;
118 else if( sps->i_chroma_format_idc == CHROMA_422 )
119 sps->i_profile_idc = PROFILE_HIGH422;
120 else if( BIT_DEPTH > 8 )
121 sps->i_profile_idc = PROFILE_HIGH10;
122 else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT || sps->i_chroma_format_idc == CHROMA_400 )
123 sps->i_profile_idc = PROFILE_HIGH;
124 else if( param->b_cabac || param->i_bframe > 0 || param->b_interlaced || param->b_fake_interlaced || param->analyse.i_weighted_pred > 0 )
125 sps->i_profile_idc = PROFILE_MAIN;
126 else
127 sps->i_profile_idc = PROFILE_BASELINE;
128
129 sps->b_constraint_set0 = sps->i_profile_idc == PROFILE_BASELINE;
130 /* x264 doesn't support the features that are in Baseline and not in Main,
131 * namely arbitrary_slice_order and slice_groups. */
132 sps->b_constraint_set1 = sps->i_profile_idc <= PROFILE_MAIN;
133 /* Never set constraint_set2, it is not necessary and not used in real world. */
134 sps->b_constraint_set2 = 0;
135 sps->b_constraint_set3 = 0;
136
137 sps->i_level_idc = param->i_level_idc;
138 if( param->i_level_idc == 9 && ( sps->i_profile_idc == PROFILE_BASELINE || sps->i_profile_idc == PROFILE_MAIN ) )
139 {
140 sps->b_constraint_set3 = 1; /* level 1b with Baseline or Main profile is signalled via constraint_set3 */
141 sps->i_level_idc = 11;
142 }
143 /* Intra profiles */
144 if( param->i_keyint_max == 1 && sps->i_profile_idc >= PROFILE_HIGH )
145 sps->b_constraint_set3 = 1;
146
147 sps->vui.i_num_reorder_frames = param->i_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
148 /* extra slot with pyramid so that we don't have to override the
149 * order of forgetting old pictures */
150 sps->vui.i_max_dec_frame_buffering =
151 sps->i_num_ref_frames = X264_MIN(X264_REF_MAX, X264_MAX4(param->i_frame_reference, 1 + sps->vui.i_num_reorder_frames,
152 param->i_bframe_pyramid ? 4 : 1, param->i_dpb_size));
153 sps->i_num_ref_frames -= param->i_bframe_pyramid == X264_B_PYRAMID_STRICT;
154 if( param->i_keyint_max == 1 )
155 {
156 sps->i_num_ref_frames = 0;
157 sps->vui.i_max_dec_frame_buffering = 0;
158 }
159
160 /* number of refs + current frame */
161 int max_frame_num = sps->vui.i_max_dec_frame_buffering * (!!param->i_bframe_pyramid+1) + 1;
162 /* Intra refresh cannot write a recovery time greater than max frame num-1 */
163 if( param->b_intra_refresh )
164 {
165 int time_to_recovery = X264_MIN( sps->i_mb_width - 1, param->i_keyint_max ) + param->i_bframe - 1;
166 max_frame_num = X264_MAX( max_frame_num, time_to_recovery+1 );
167 }
168
169 sps->i_log2_max_frame_num = 4;
170 while( (1 << sps->i_log2_max_frame_num) <= max_frame_num )
171 sps->i_log2_max_frame_num++;
172
173 sps->i_poc_type = param->i_bframe || param->b_interlaced || param->i_avcintra_class ? 0 : 2;
174 if( sps->i_poc_type == 0 )
175 {
176 int max_delta_poc = (param->i_bframe + 2) * (!!param->i_bframe_pyramid + 1) * 2;
177 sps->i_log2_max_poc_lsb = 4;
178 while( (1 << sps->i_log2_max_poc_lsb) <= max_delta_poc * 2 )
179 sps->i_log2_max_poc_lsb++;
180 }
181
182 sps->b_vui = 1;
183
184 sps->b_gaps_in_frame_num_value_allowed = 0;
185 sps->b_mb_adaptive_frame_field = param->b_interlaced;
186 sps->b_direct8x8_inference = 1;
187
188 x264_sps_init_reconfigurable( sps, param );
189
190 sps->vui.b_overscan_info_present = param->vui.i_overscan > 0 && param->vui.i_overscan <= 2;
191 if( sps->vui.b_overscan_info_present )
192 sps->vui.b_overscan_info = ( param->vui.i_overscan == 2 ? 1 : 0 );
193
194 sps->vui.b_signal_type_present = 0;
195 sps->vui.i_vidformat = ( param->vui.i_vidformat >= 0 && param->vui.i_vidformat <= 5 ? param->vui.i_vidformat : 5 );
196 sps->vui.b_fullrange = ( param->vui.b_fullrange >= 0 && param->vui.b_fullrange <= 1 ? param->vui.b_fullrange :
197 ( csp >= X264_CSP_BGR ? 1 : 0 ) );
198 sps->vui.b_color_description_present = 0;
199
200 sps->vui.i_colorprim = ( param->vui.i_colorprim >= 0 && param->vui.i_colorprim <= 12 ? param->vui.i_colorprim : 2 );
201 sps->vui.i_transfer = ( param->vui.i_transfer >= 0 && param->vui.i_transfer <= 18 ? param->vui.i_transfer : 2 );
202 sps->vui.i_colmatrix = ( param->vui.i_colmatrix >= 0 && param->vui.i_colmatrix <= 14 ? param->vui.i_colmatrix :
203 ( csp >= X264_CSP_BGR ? 0 : 2 ) );
204 if( sps->vui.i_colorprim != 2 || sps->vui.i_transfer != 2 || sps->vui.i_colmatrix != 2 )
205 sps->vui.b_color_description_present = 1;
206
207 if( sps->vui.i_vidformat != 5 || sps->vui.b_fullrange || sps->vui.b_color_description_present )
208 sps->vui.b_signal_type_present = 1;
209
210 /* FIXME: not sufficient for interlaced video */
211 sps->vui.b_chroma_loc_info_present = param->vui.i_chroma_loc > 0 && param->vui.i_chroma_loc <= 5 &&
212 sps->i_chroma_format_idc == CHROMA_420;
213 if( sps->vui.b_chroma_loc_info_present )
214 {
215 sps->vui.i_chroma_loc_top = param->vui.i_chroma_loc;
216 sps->vui.i_chroma_loc_bottom = param->vui.i_chroma_loc;
217 }
218
219 sps->vui.b_timing_info_present = param->i_timebase_num > 0 && param->i_timebase_den > 0;
220
221 if( sps->vui.b_timing_info_present )
222 {
223 sps->vui.i_num_units_in_tick = param->i_timebase_num;
224 sps->vui.i_time_scale = param->i_timebase_den * 2;
225 sps->vui.b_fixed_frame_rate = !param->b_vfr_input;
226 }
227
228 sps->vui.b_vcl_hrd_parameters_present = 0; // we don't support VCL HRD
229 sps->vui.b_nal_hrd_parameters_present = !!param->i_nal_hrd;
230 sps->vui.b_pic_struct_present = param->b_pic_struct;
231
232 // NOTE: HRD related parts of the SPS are initialised in x264_ratecontrol_init_reconfigurable
233
234 sps->vui.b_bitstream_restriction = !(sps->b_constraint_set3 && sps->i_profile_idc >= PROFILE_HIGH);
235 if( sps->vui.b_bitstream_restriction )
236 {
237 sps->vui.b_motion_vectors_over_pic_boundaries = 1;
238 sps->vui.i_max_bytes_per_pic_denom = 0;
239 sps->vui.i_max_bits_per_mb_denom = 0;
240 sps->vui.i_log2_max_mv_length_horizontal =
241 sps->vui.i_log2_max_mv_length_vertical = (int)log2f( X264_MAX( 1, param->analyse.i_mv_range*4-1 ) ) + 1;
242 }
243
244 sps->b_avcintra = !!param->i_avcintra_class;
245 sps->i_cqm_preset = param->i_cqm_preset;
246 }
247
x264_sps_init_reconfigurable(x264_sps_t * sps,x264_param_t * param)248 void x264_sps_init_reconfigurable( x264_sps_t *sps, x264_param_t *param )
249 {
250 sps->crop.i_left = param->crop_rect.i_left;
251 sps->crop.i_top = param->crop_rect.i_top;
252 sps->crop.i_right = param->crop_rect.i_right + sps->i_mb_width*16 - param->i_width;
253 sps->crop.i_bottom = param->crop_rect.i_bottom + sps->i_mb_height*16 - param->i_height;
254 sps->b_crop = sps->crop.i_left || sps->crop.i_top ||
255 sps->crop.i_right || sps->crop.i_bottom;
256
257 sps->vui.b_aspect_ratio_info_present = 0;
258 if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
259 {
260 sps->vui.b_aspect_ratio_info_present = 1;
261 sps->vui.i_sar_width = param->vui.i_sar_width;
262 sps->vui.i_sar_height= param->vui.i_sar_height;
263 }
264 }
265
x264_sps_init_scaling_list(x264_sps_t * sps,x264_param_t * param)266 void x264_sps_init_scaling_list( x264_sps_t *sps, x264_param_t *param )
267 {
268 switch( sps->i_cqm_preset )
269 {
270 case X264_CQM_FLAT:
271 for( int i = 0; i < 8; i++ )
272 sps->scaling_list[i] = x264_cqm_flat16;
273 break;
274 case X264_CQM_JVT:
275 for( int i = 0; i < 8; i++ )
276 sps->scaling_list[i] = x264_cqm_jvt[i];
277 break;
278 case X264_CQM_CUSTOM:
279 /* match the transposed DCT & zigzag */
280 transpose( param->cqm_4iy, 4 );
281 transpose( param->cqm_4py, 4 );
282 transpose( param->cqm_4ic, 4 );
283 transpose( param->cqm_4pc, 4 );
284 transpose( param->cqm_8iy, 8 );
285 transpose( param->cqm_8py, 8 );
286 transpose( param->cqm_8ic, 8 );
287 transpose( param->cqm_8pc, 8 );
288 sps->scaling_list[CQM_4IY] = param->cqm_4iy;
289 sps->scaling_list[CQM_4PY] = param->cqm_4py;
290 sps->scaling_list[CQM_4IC] = param->cqm_4ic;
291 sps->scaling_list[CQM_4PC] = param->cqm_4pc;
292 sps->scaling_list[CQM_8IY+4] = param->cqm_8iy;
293 sps->scaling_list[CQM_8PY+4] = param->cqm_8py;
294 sps->scaling_list[CQM_8IC+4] = param->cqm_8ic;
295 sps->scaling_list[CQM_8PC+4] = param->cqm_8pc;
296 for( int i = 0; i < 8; i++ )
297 for( int j = 0; j < (i < 4 ? 16 : 64); j++ )
298 if( sps->scaling_list[i][j] == 0 )
299 sps->scaling_list[i] = x264_cqm_jvt[i];
300 break;
301 }
302 }
303
x264_sps_write(bs_t * s,x264_sps_t * sps)304 void x264_sps_write( bs_t *s, x264_sps_t *sps )
305 {
306 bs_realign( s );
307 bs_write( s, 8, sps->i_profile_idc );
308 bs_write1( s, sps->b_constraint_set0 );
309 bs_write1( s, sps->b_constraint_set1 );
310 bs_write1( s, sps->b_constraint_set2 );
311 bs_write1( s, sps->b_constraint_set3 );
312
313 bs_write( s, 4, 0 ); /* reserved */
314
315 bs_write( s, 8, sps->i_level_idc );
316
317 bs_write_ue( s, sps->i_id );
318
319 if( sps->i_profile_idc >= PROFILE_HIGH )
320 {
321 bs_write_ue( s, sps->i_chroma_format_idc );
322 if( sps->i_chroma_format_idc == CHROMA_444 )
323 bs_write1( s, 0 ); // separate_colour_plane_flag
324 bs_write_ue( s, BIT_DEPTH-8 ); // bit_depth_luma_minus8
325 bs_write_ue( s, BIT_DEPTH-8 ); // bit_depth_chroma_minus8
326 bs_write1( s, sps->b_qpprime_y_zero_transform_bypass );
327 /* Exactly match the AVC-Intra bitstream */
328 bs_write1( s, sps->b_avcintra ); // seq_scaling_matrix_present_flag
329 if( sps->b_avcintra )
330 {
331 scaling_list_write( s, sps, CQM_4IY );
332 scaling_list_write( s, sps, CQM_4IC );
333 scaling_list_write( s, sps, CQM_4IC );
334 bs_write1( s, 0 ); // no inter
335 bs_write1( s, 0 ); // no inter
336 bs_write1( s, 0 ); // no inter
337 scaling_list_write( s, sps, CQM_8IY+4 );
338 bs_write1( s, 0 ); // no inter
339 if( sps->i_chroma_format_idc == CHROMA_444 )
340 {
341 scaling_list_write( s, sps, CQM_8IC+4 );
342 bs_write1( s, 0 ); // no inter
343 scaling_list_write( s, sps, CQM_8IC+4 );
344 bs_write1( s, 0 ); // no inter
345 }
346 }
347 }
348
349 bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
350 bs_write_ue( s, sps->i_poc_type );
351 if( sps->i_poc_type == 0 )
352 bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
353 bs_write_ue( s, sps->i_num_ref_frames );
354 bs_write1( s, sps->b_gaps_in_frame_num_value_allowed );
355 bs_write_ue( s, sps->i_mb_width - 1 );
356 bs_write_ue( s, (sps->i_mb_height >> !sps->b_frame_mbs_only) - 1);
357 bs_write1( s, sps->b_frame_mbs_only );
358 if( !sps->b_frame_mbs_only )
359 bs_write1( s, sps->b_mb_adaptive_frame_field );
360 bs_write1( s, sps->b_direct8x8_inference );
361
362 bs_write1( s, sps->b_crop );
363 if( sps->b_crop )
364 {
365 int h_shift = sps->i_chroma_format_idc == CHROMA_420 || sps->i_chroma_format_idc == CHROMA_422;
366 int v_shift = (sps->i_chroma_format_idc == CHROMA_420) + !sps->b_frame_mbs_only;
367 bs_write_ue( s, sps->crop.i_left >> h_shift );
368 bs_write_ue( s, sps->crop.i_right >> h_shift );
369 bs_write_ue( s, sps->crop.i_top >> v_shift );
370 bs_write_ue( s, sps->crop.i_bottom >> v_shift );
371 }
372
373 bs_write1( s, sps->b_vui );
374 if( sps->b_vui )
375 {
376 bs_write1( s, sps->vui.b_aspect_ratio_info_present );
377 if( sps->vui.b_aspect_ratio_info_present )
378 {
379 int i;
380 static const struct { uint8_t w, h, sar; } sar[] =
381 {
382 // aspect_ratio_idc = 0 -> unspecified
383 { 1, 1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
384 { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
385 { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
386 {160, 99, 13}, { 4, 3, 14}, { 3, 2, 15}, { 2, 1, 16},
387 // aspect_ratio_idc = [17..254] -> reserved
388 { 0, 0, 255 }
389 };
390 for( i = 0; sar[i].sar != 255; i++ )
391 {
392 if( sar[i].w == sps->vui.i_sar_width &&
393 sar[i].h == sps->vui.i_sar_height )
394 break;
395 }
396 bs_write( s, 8, sar[i].sar );
397 if( sar[i].sar == 255 ) /* aspect_ratio_idc (extended) */
398 {
399 bs_write( s, 16, sps->vui.i_sar_width );
400 bs_write( s, 16, sps->vui.i_sar_height );
401 }
402 }
403
404 bs_write1( s, sps->vui.b_overscan_info_present );
405 if( sps->vui.b_overscan_info_present )
406 bs_write1( s, sps->vui.b_overscan_info );
407
408 bs_write1( s, sps->vui.b_signal_type_present );
409 if( sps->vui.b_signal_type_present )
410 {
411 bs_write( s, 3, sps->vui.i_vidformat );
412 bs_write1( s, sps->vui.b_fullrange );
413 bs_write1( s, sps->vui.b_color_description_present );
414 if( sps->vui.b_color_description_present )
415 {
416 bs_write( s, 8, sps->vui.i_colorprim );
417 bs_write( s, 8, sps->vui.i_transfer );
418 bs_write( s, 8, sps->vui.i_colmatrix );
419 }
420 }
421
422 bs_write1( s, sps->vui.b_chroma_loc_info_present );
423 if( sps->vui.b_chroma_loc_info_present )
424 {
425 bs_write_ue( s, sps->vui.i_chroma_loc_top );
426 bs_write_ue( s, sps->vui.i_chroma_loc_bottom );
427 }
428
429 bs_write1( s, sps->vui.b_timing_info_present );
430 if( sps->vui.b_timing_info_present )
431 {
432 bs_write32( s, sps->vui.i_num_units_in_tick );
433 bs_write32( s, sps->vui.i_time_scale );
434 bs_write1( s, sps->vui.b_fixed_frame_rate );
435 }
436
437 bs_write1( s, sps->vui.b_nal_hrd_parameters_present );
438 if( sps->vui.b_nal_hrd_parameters_present )
439 {
440 bs_write_ue( s, sps->vui.hrd.i_cpb_cnt - 1 );
441 bs_write( s, 4, sps->vui.hrd.i_bit_rate_scale );
442 bs_write( s, 4, sps->vui.hrd.i_cpb_size_scale );
443
444 bs_write_ue( s, sps->vui.hrd.i_bit_rate_value - 1 );
445 bs_write_ue( s, sps->vui.hrd.i_cpb_size_value - 1 );
446
447 bs_write1( s, sps->vui.hrd.b_cbr_hrd );
448
449 bs_write( s, 5, sps->vui.hrd.i_initial_cpb_removal_delay_length - 1 );
450 bs_write( s, 5, sps->vui.hrd.i_cpb_removal_delay_length - 1 );
451 bs_write( s, 5, sps->vui.hrd.i_dpb_output_delay_length - 1 );
452 bs_write( s, 5, sps->vui.hrd.i_time_offset_length );
453 }
454
455 bs_write1( s, sps->vui.b_vcl_hrd_parameters_present );
456
457 if( sps->vui.b_nal_hrd_parameters_present || sps->vui.b_vcl_hrd_parameters_present )
458 bs_write1( s, 0 ); /* low_delay_hrd_flag */
459
460 bs_write1( s, sps->vui.b_pic_struct_present );
461 bs_write1( s, sps->vui.b_bitstream_restriction );
462 if( sps->vui.b_bitstream_restriction )
463 {
464 bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
465 bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
466 bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
467 bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
468 bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
469 bs_write_ue( s, sps->vui.i_num_reorder_frames );
470 bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
471 }
472 }
473
474 bs_rbsp_trailing( s );
475 bs_flush( s );
476 }
477
x264_pps_init(x264_pps_t * pps,int i_id,x264_param_t * param,x264_sps_t * sps)478 void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps )
479 {
480 pps->i_id = i_id;
481 pps->i_sps_id = sps->i_id;
482 pps->b_cabac = param->b_cabac;
483
484 pps->b_pic_order = !param->i_avcintra_class && param->b_interlaced;
485 pps->i_num_slice_groups = 1;
486
487 pps->i_num_ref_idx_l0_default_active = param->i_frame_reference;
488 pps->i_num_ref_idx_l1_default_active = 1;
489
490 pps->b_weighted_pred = param->analyse.i_weighted_pred > 0;
491 pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
492
493 pps->i_pic_init_qp = param->rc.i_rc_method == X264_RC_ABR || param->b_stitchable ? 26 + QP_BD_OFFSET : SPEC_QP( param->rc.i_qp_constant );
494 pps->i_pic_init_qs = 26 + QP_BD_OFFSET;
495
496 pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
497 pps->b_deblocking_filter_control = 1;
498 pps->b_constrained_intra_pred = param->b_constrained_intra;
499 pps->b_redundant_pic_cnt = 0;
500
501 pps->b_transform_8x8_mode = param->analyse.b_transform_8x8 ? 1 : 0;
502 }
503
x264_pps_write(bs_t * s,x264_sps_t * sps,x264_pps_t * pps)504 void x264_pps_write( bs_t *s, x264_sps_t *sps, x264_pps_t *pps )
505 {
506 bs_realign( s );
507 bs_write_ue( s, pps->i_id );
508 bs_write_ue( s, pps->i_sps_id );
509
510 bs_write1( s, pps->b_cabac );
511 bs_write1( s, pps->b_pic_order );
512 bs_write_ue( s, pps->i_num_slice_groups - 1 );
513
514 bs_write_ue( s, pps->i_num_ref_idx_l0_default_active - 1 );
515 bs_write_ue( s, pps->i_num_ref_idx_l1_default_active - 1 );
516 bs_write1( s, pps->b_weighted_pred );
517 bs_write( s, 2, pps->b_weighted_bipred );
518
519 bs_write_se( s, pps->i_pic_init_qp - 26 - QP_BD_OFFSET );
520 bs_write_se( s, pps->i_pic_init_qs - 26 - QP_BD_OFFSET );
521 bs_write_se( s, pps->i_chroma_qp_index_offset );
522
523 bs_write1( s, pps->b_deblocking_filter_control );
524 bs_write1( s, pps->b_constrained_intra_pred );
525 bs_write1( s, pps->b_redundant_pic_cnt );
526
527 int b_scaling_list = !sps->b_avcintra && sps->i_cqm_preset != X264_CQM_FLAT;
528 if( pps->b_transform_8x8_mode || b_scaling_list )
529 {
530 bs_write1( s, pps->b_transform_8x8_mode );
531 bs_write1( s, b_scaling_list );
532 if( b_scaling_list )
533 {
534 scaling_list_write( s, sps, CQM_4IY );
535 scaling_list_write( s, sps, CQM_4IC );
536 bs_write1( s, 0 ); // Cr = Cb
537 scaling_list_write( s, sps, CQM_4PY );
538 scaling_list_write( s, sps, CQM_4PC );
539 bs_write1( s, 0 ); // Cr = Cb
540 if( pps->b_transform_8x8_mode )
541 {
542 scaling_list_write( s, sps, CQM_8IY+4 );
543 scaling_list_write( s, sps, CQM_8PY+4 );
544 if( sps->i_chroma_format_idc == CHROMA_444 )
545 {
546 scaling_list_write( s, sps, CQM_8IC+4 );
547 scaling_list_write( s, sps, CQM_8PC+4 );
548 bs_write1( s, 0 ); // Cr = Cb
549 bs_write1( s, 0 ); // Cr = Cb
550 }
551 }
552 }
553 bs_write_se( s, pps->i_chroma_qp_index_offset );
554 }
555
556 bs_rbsp_trailing( s );
557 bs_flush( s );
558 }
559
x264_sei_recovery_point_write(x264_t * h,bs_t * s,int recovery_frame_cnt)560 void x264_sei_recovery_point_write( x264_t *h, bs_t *s, int recovery_frame_cnt )
561 {
562 bs_t q;
563 ALIGNED_4( uint8_t tmp_buf[100] );
564 M32( tmp_buf ) = 0; // shut up gcc
565 bs_init( &q, tmp_buf, 100 );
566
567 bs_realign( &q );
568
569 bs_write_ue( &q, recovery_frame_cnt ); // recovery_frame_cnt
570 bs_write1( &q, 1 ); //exact_match_flag 1
571 bs_write1( &q, 0 ); //broken_link_flag 0
572 bs_write( &q, 2, 0 ); //changing_slice_group 0
573
574 bs_align_10( &q );
575
576 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_RECOVERY_POINT );
577 }
578
x264_sei_version_write(x264_t * h,bs_t * s)579 int x264_sei_version_write( x264_t *h, bs_t *s )
580 {
581 // random ID number generated according to ISO-11578
582 static const uint8_t uuid[16] =
583 {
584 0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
585 0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
586 };
587 char *opts = x264_param2string( &h->param, 0 );
588 char *payload;
589 int length;
590
591 if( !opts )
592 return -1;
593 CHECKED_MALLOC( payload, 200 + strlen( opts ) );
594
595 memcpy( payload, uuid, 16 );
596 sprintf( payload+16, "x264 - core %d%s - H.264/MPEG-4 AVC codec - "
597 "Copy%s 2003-2021 - http://www.videolan.org/x264.html - options: %s",
598 X264_BUILD, X264_VERSION, HAVE_GPL?"left":"right", opts );
599 length = strlen(payload)+1;
600
601 x264_sei_write( s, (uint8_t *)payload, length, SEI_USER_DATA_UNREGISTERED );
602
603 x264_free( opts );
604 x264_free( payload );
605 return 0;
606 fail:
607 x264_free( opts );
608 return -1;
609 }
610
x264_sei_buffering_period_write(x264_t * h,bs_t * s)611 void x264_sei_buffering_period_write( x264_t *h, bs_t *s )
612 {
613 x264_sps_t *sps = h->sps;
614 bs_t q;
615 ALIGNED_4( uint8_t tmp_buf[100] );
616 M32( tmp_buf ) = 0; // shut up gcc
617 bs_init( &q, tmp_buf, 100 );
618
619 bs_realign( &q );
620 bs_write_ue( &q, sps->i_id );
621
622 if( sps->vui.b_nal_hrd_parameters_present )
623 {
624 bs_write( &q, sps->vui.hrd.i_initial_cpb_removal_delay_length, h->initial_cpb_removal_delay );
625 bs_write( &q, sps->vui.hrd.i_initial_cpb_removal_delay_length, h->initial_cpb_removal_delay_offset );
626 }
627
628 bs_align_10( &q );
629
630 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_BUFFERING_PERIOD );
631 }
632
x264_sei_pic_timing_write(x264_t * h,bs_t * s)633 void x264_sei_pic_timing_write( x264_t *h, bs_t *s )
634 {
635 x264_sps_t *sps = h->sps;
636 bs_t q;
637 ALIGNED_4( uint8_t tmp_buf[100] );
638 M32( tmp_buf ) = 0; // shut up gcc
639 bs_init( &q, tmp_buf, 100 );
640
641 bs_realign( &q );
642
643 if( sps->vui.b_nal_hrd_parameters_present || sps->vui.b_vcl_hrd_parameters_present )
644 {
645 bs_write( &q, sps->vui.hrd.i_cpb_removal_delay_length, h->fenc->i_cpb_delay - h->i_cpb_delay_pir_offset );
646 bs_write( &q, sps->vui.hrd.i_dpb_output_delay_length, h->fenc->i_dpb_output_delay );
647 }
648
649 if( sps->vui.b_pic_struct_present )
650 {
651 bs_write( &q, 4, h->fenc->i_pic_struct-1 ); // We use index 0 for "Auto"
652
653 // These clock timestamps are not standardised so we don't set them
654 // They could be time of origin, capture or alternative ideal display
655 for( int i = 0; i < num_clock_ts[h->fenc->i_pic_struct]; i++ )
656 bs_write1( &q, 0 ); // clock_timestamp_flag
657 }
658
659 bs_align_10( &q );
660
661 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_PIC_TIMING );
662 }
663
x264_sei_frame_packing_write(x264_t * h,bs_t * s)664 void x264_sei_frame_packing_write( x264_t *h, bs_t *s )
665 {
666 int quincunx_sampling_flag = h->param.i_frame_packing == 0;
667 bs_t q;
668 ALIGNED_4( uint8_t tmp_buf[100] );
669 M32( tmp_buf ) = 0; // shut up gcc
670 bs_init( &q, tmp_buf, 100 );
671
672 bs_realign( &q );
673
674 bs_write_ue( &q, 0 ); // frame_packing_arrangement_id
675 bs_write1( &q, 0 ); // frame_packing_arrangement_cancel_flag
676 bs_write ( &q, 7, h->param.i_frame_packing ); // frame_packing_arrangement_type
677 bs_write1( &q, quincunx_sampling_flag ); // quincunx_sampling_flag
678
679 // 0: views are unrelated, 1: left view is on the left, 2: left view is on the right
680 bs_write ( &q, 6, h->param.i_frame_packing != 6 ); // content_interpretation_type
681
682 bs_write1( &q, 0 ); // spatial_flipping_flag
683 bs_write1( &q, 0 ); // frame0_flipped_flag
684 bs_write1( &q, 0 ); // field_views_flag
685 bs_write1( &q, h->param.i_frame_packing == 5 && !(h->fenc->i_frame&1) ); // current_frame_is_frame0_flag
686 bs_write1( &q, 0 ); // frame0_self_contained_flag
687 bs_write1( &q, 0 ); // frame1_self_contained_flag
688 if( quincunx_sampling_flag == 0 && h->param.i_frame_packing != 5 )
689 {
690 bs_write( &q, 4, 0 ); // frame0_grid_position_x
691 bs_write( &q, 4, 0 ); // frame0_grid_position_y
692 bs_write( &q, 4, 0 ); // frame1_grid_position_x
693 bs_write( &q, 4, 0 ); // frame1_grid_position_y
694 }
695 bs_write( &q, 8, 0 ); // frame_packing_arrangement_reserved_byte
696 // "frame_packing_arrangement_repetition_period equal to 1 specifies that the frame packing arrangement SEI message persists in output"
697 // for (i_frame_packing == 5) this will undermine current_frame_is_frame0_flag which must alternate every view sequence
698 bs_write_ue( &q, h->param.i_frame_packing != 5 ); // frame_packing_arrangement_repetition_period
699 bs_write1( &q, 0 ); // frame_packing_arrangement_extension_flag
700
701 bs_align_10( &q );
702
703 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_FRAME_PACKING );
704 }
705
x264_sei_mastering_display_write(x264_t * h,bs_t * s)706 void x264_sei_mastering_display_write( x264_t *h, bs_t *s )
707 {
708 bs_t q;
709 ALIGNED_4( uint8_t tmp_buf[100] );
710 M32( tmp_buf ) = 0; // shut up gcc
711 bs_init( &q, tmp_buf, 100 );
712
713 bs_realign( &q );
714
715 bs_write( &q, 16, h->param.mastering_display.i_green_x );
716 bs_write( &q, 16, h->param.mastering_display.i_green_y );
717 bs_write( &q, 16, h->param.mastering_display.i_blue_x );
718 bs_write( &q, 16, h->param.mastering_display.i_blue_y );
719 bs_write( &q, 16, h->param.mastering_display.i_red_x );
720 bs_write( &q, 16, h->param.mastering_display.i_red_y );
721 bs_write( &q, 16, h->param.mastering_display.i_white_x );
722 bs_write( &q, 16, h->param.mastering_display.i_white_y );
723 bs_write32( &q, h->param.mastering_display.i_display_max );
724 bs_write32( &q, h->param.mastering_display.i_display_min );
725
726 bs_align_10( &q );
727
728 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_MASTERING_DISPLAY );
729 }
730
x264_sei_content_light_level_write(x264_t * h,bs_t * s)731 void x264_sei_content_light_level_write( x264_t *h, bs_t *s )
732 {
733 bs_t q;
734 ALIGNED_4( uint8_t tmp_buf[100] );
735 M32( tmp_buf ) = 0; // shut up gcc
736 bs_init( &q, tmp_buf, 100 );
737
738 bs_realign( &q );
739
740 bs_write( &q, 16, h->param.content_light_level.i_max_cll );
741 bs_write( &q, 16, h->param.content_light_level.i_max_fall );
742
743 bs_align_10( &q );
744
745 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_CONTENT_LIGHT_LEVEL );
746 }
747
x264_sei_alternative_transfer_write(x264_t * h,bs_t * s)748 void x264_sei_alternative_transfer_write( x264_t *h, bs_t *s )
749 {
750 bs_t q;
751 ALIGNED_4( uint8_t tmp_buf[100] );
752 M32( tmp_buf ) = 0; // shut up gcc
753 bs_init( &q, tmp_buf, 100 );
754
755 bs_realign( &q );
756
757 bs_write ( &q, 8, h->param.i_alternative_transfer ); // preferred_transfer_characteristics
758
759 bs_align_10( &q );
760
761 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_ALTERNATIVE_TRANSFER );
762 }
763
x264_filler_write(x264_t * h,bs_t * s,int filler)764 void x264_filler_write( x264_t *h, bs_t *s, int filler )
765 {
766 bs_realign( s );
767
768 for( int i = 0; i < filler; i++ )
769 bs_write( s, 8, 0xff );
770
771 bs_rbsp_trailing( s );
772 bs_flush( s );
773 }
774
x264_sei_dec_ref_pic_marking_write(x264_t * h,bs_t * s)775 void x264_sei_dec_ref_pic_marking_write( x264_t *h, bs_t *s )
776 {
777 x264_slice_header_t *sh = &h->sh_backup;
778 bs_t q;
779 ALIGNED_4( uint8_t tmp_buf[100] );
780 M32( tmp_buf ) = 0; // shut up gcc
781 bs_init( &q, tmp_buf, 100 );
782
783 bs_realign( &q );
784
785 /* We currently only use this for repeating B-refs, as required by Blu-ray. */
786 bs_write1( &q, 0 ); //original_idr_flag
787 bs_write_ue( &q, sh->i_frame_num ); //original_frame_num
788 if( !h->sps->b_frame_mbs_only )
789 bs_write1( &q, 0 ); //original_field_pic_flag
790
791 bs_write1( &q, sh->i_mmco_command_count > 0 );
792 if( sh->i_mmco_command_count > 0 )
793 {
794 for( int i = 0; i < sh->i_mmco_command_count; i++ )
795 {
796 bs_write_ue( &q, 1 );
797 bs_write_ue( &q, sh->mmco[i].i_difference_of_pic_nums - 1 );
798 }
799 bs_write_ue( &q, 0 );
800 }
801
802 bs_align_10( &q );
803
804 x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_DEC_REF_PIC_MARKING );
805 }
806
x264_sei_avcintra_umid_write(x264_t * h,bs_t * s)807 int x264_sei_avcintra_umid_write( x264_t *h, bs_t *s )
808 {
809 uint8_t data[512];
810 const char *msg = "UMID";
811 const int len = 497;
812
813 memset( data, 0xff, len );
814 memcpy( data, avcintra_uuid, sizeof(avcintra_uuid) );
815 memcpy( data+16, msg, strlen(msg) );
816
817 data[20] = 0x13;
818 /* These bytes appear to be some sort of frame/seconds counter in certain applications,
819 * but others jump around, so leave them as zero for now */
820 data[22] = data[23] = data[25] = data[26] = 0;
821 data[28] = 0x14;
822 data[30] = data[31] = data[33] = data[34] = 0;
823 data[36] = 0x60;
824 data[41] = 0x22; /* Believed to be some sort of end of basic UMID identifier */
825 data[60] = 0x62;
826 data[62] = data[63] = data[65] = data[66] = 0;
827 data[68] = 0x63;
828 data[70] = data[71] = data[73] = data[74] = 0;
829
830 x264_sei_write( &h->out.bs, data, len, SEI_USER_DATA_UNREGISTERED );
831
832 return 0;
833 }
834
x264_sei_avcintra_vanc_write(x264_t * h,bs_t * s,int len)835 int x264_sei_avcintra_vanc_write( x264_t *h, bs_t *s, int len )
836 {
837 uint8_t data[6000];
838 const char *msg = "VANC";
839 if( len < 0 || (unsigned)len > sizeof(data) )
840 {
841 x264_log( h, X264_LOG_ERROR, "AVC-Intra SEI is too large (%d)\n", len );
842 return -1;
843 }
844
845 memset( data, 0xff, len );
846 memcpy( data, avcintra_uuid, sizeof(avcintra_uuid) );
847 memcpy( data+16, msg, strlen(msg) );
848
849 x264_sei_write( &h->out.bs, data, len, SEI_USER_DATA_UNREGISTERED );
850
851 return 0;
852 }
853
854 #define ERROR(...)\
855 {\
856 if( verbose )\
857 x264_log( h, X264_LOG_WARNING, __VA_ARGS__ );\
858 ret = 1;\
859 }
860
x264_validate_levels(x264_t * h,int verbose)861 int x264_validate_levels( x264_t *h, int verbose )
862 {
863 int ret = 0;
864 int mbs = h->sps->i_mb_width * h->sps->i_mb_height;
865 int dpb = mbs * h->sps->vui.i_max_dec_frame_buffering;
866 int cbp_factor = h->sps->i_profile_idc>=PROFILE_HIGH422 ? 16 :
867 h->sps->i_profile_idc==PROFILE_HIGH10 ? 12 :
868 h->sps->i_profile_idc==PROFILE_HIGH ? 5 : 4;
869
870 const x264_level_t *l = x264_levels;
871 while( l->level_idc != 0 && l->level_idc != h->param.i_level_idc )
872 l++;
873
874 if( l->frame_size < mbs
875 || l->frame_size*8 < h->sps->i_mb_width * h->sps->i_mb_width
876 || l->frame_size*8 < h->sps->i_mb_height * h->sps->i_mb_height )
877 ERROR( "frame MB size (%dx%d) > level limit (%d)\n",
878 h->sps->i_mb_width, h->sps->i_mb_height, l->frame_size );
879 if( dpb > l->dpb )
880 ERROR( "DPB size (%d frames, %d mbs) > level limit (%d frames, %d mbs)\n",
881 h->sps->vui.i_max_dec_frame_buffering, dpb, l->dpb / mbs, l->dpb );
882
883 #define CHECK( name, limit, val ) \
884 if( (val) > (limit) ) \
885 ERROR( name " (%"PRId64") > level limit (%d)\n", (int64_t)(val), (limit) );
886
887 CHECK( "VBV bitrate", (l->bitrate * cbp_factor) / 4, h->param.rc.i_vbv_max_bitrate );
888 CHECK( "VBV buffer", (l->cpb * cbp_factor) / 4, h->param.rc.i_vbv_buffer_size );
889 CHECK( "MV range", l->mv_range, h->param.analyse.i_mv_range );
890 CHECK( "interlaced", !l->frame_only, h->param.b_interlaced );
891 CHECK( "fake interlaced", !l->frame_only, h->param.b_fake_interlaced );
892
893 if( h->param.i_fps_den > 0 )
894 CHECK( "MB rate", l->mbps, (int64_t)mbs * h->param.i_fps_num / h->param.i_fps_den );
895
896 /* TODO check the rest of the limits */
897 return ret;
898 }
899