1 /*****************************************************************************
2 * set: h264 encoder (SPS and PPS init and write)
3 *****************************************************************************
4 * Copyright (C) 2003-2008 x264 project
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7 * Loren Merritt <lorenm@u.washington.edu>
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.
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.
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 *****************************************************************************/
26 #include "common/common.h"
31 static void transpose( uint8_t *buf, int w )
34 for( i = 0; i < w; i++ )
35 for( j = 0; j < i; j++ )
36 XCHG( uint8_t, buf[w*i+j], buf[w*j+i] );
39 static void scaling_list_write( bs_t *s, x264_pps_t *pps, int idx )
41 const int len = idx<4 ? 16 : 64;
42 const uint8_t *zigzag = idx<4 ? x264_zigzag_scan4[0] : x264_zigzag_scan8[0];
43 const uint8_t *list = pps->scaling_list[idx];
44 const uint8_t *def_list = (idx==CQM_4IC) ? pps->scaling_list[CQM_4IY]
45 : (idx==CQM_4PC) ? pps->scaling_list[CQM_4PY]
47 if( !memcmp( list, def_list, len ) )
48 bs_write( s, 1, 0 ); // scaling_list_present_flag
49 else if( !memcmp( list, x264_cqm_jvt[idx], len ) )
51 bs_write( s, 1, 1 ); // scaling_list_present_flag
52 bs_write_se( s, -8 ); // use jvt list
57 bs_write( s, 1, 1 ); // scaling_list_present_flag
59 // try run-length compression of trailing values
60 for( run = len; run > 1; run-- )
61 if( list[zigzag[run-1]] != list[zigzag[run-2]] )
63 if( run < len && len - run < bs_size_se( (int8_t)-list[zigzag[run]] ) )
66 for( j = 0; j < run; j++ )
67 bs_write_se( s, (int8_t)(list[zigzag[j]] - (j>0 ? list[zigzag[j-1]] : 8)) ); // delta
70 bs_write_se( s, (int8_t)-list[zigzag[run]] );
74 void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
78 sps->b_qpprime_y_zero_transform_bypass = param->rc.i_rc_method == X264_RC_CQP && param->rc.i_qp_constant == 0;
79 if( sps->b_qpprime_y_zero_transform_bypass )
80 sps->i_profile_idc = PROFILE_HIGH444;
81 else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT )
82 sps->i_profile_idc = PROFILE_HIGH;
83 else if( param->b_cabac || param->i_bframe > 0 )
84 sps->i_profile_idc = PROFILE_MAIN;
86 sps->i_profile_idc = PROFILE_BASELINE;
87 sps->i_level_idc = param->i_level_idc;
89 sps->b_constraint_set0 = sps->i_profile_idc == PROFILE_BASELINE;
90 /* x264 doesn't support the features that are in Baseline and not in Main,
91 * namely arbitrary_slice_order and slice_groups. */
92 sps->b_constraint_set1 = sps->i_profile_idc <= PROFILE_MAIN;
93 /* Never set constraint_set2, it is not necessary and not used in real world. */
94 sps->b_constraint_set2 = 0;
96 sps->i_log2_max_frame_num = 4; /* at least 4 */
97 while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
99 sps->i_log2_max_frame_num++;
101 sps->i_log2_max_frame_num++; /* just in case */
104 if( sps->i_poc_type == 0 )
106 sps->i_log2_max_poc_lsb = sps->i_log2_max_frame_num + 1; /* max poc = 2*frame_num */
108 else if( sps->i_poc_type == 1 )
113 sps->b_delta_pic_order_always_zero = 1;
114 sps->i_offset_for_non_ref_pic = 0;
115 sps->i_offset_for_top_to_bottom_field = 0;
116 sps->i_num_ref_frames_in_poc_cycle = 0;
118 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
120 sps->i_offset_for_ref_frame[i] = 0;
126 sps->b_gaps_in_frame_num_value_allowed = 0;
127 sps->i_mb_width = ( param->i_width + 15 ) / 16;
128 sps->i_mb_height= ( param->i_height + 15 ) / 16;
129 if( param->b_interlaced )
130 sps->i_mb_height = ( sps->i_mb_height + 1 ) & ~1;
131 sps->b_frame_mbs_only = ! param->b_interlaced;
132 sps->b_mb_adaptive_frame_field = param->b_interlaced;
133 sps->b_direct8x8_inference = param->analyse.i_direct_8x8_inference
134 || ! sps->b_frame_mbs_only
135 || !(param->analyse.inter & X264_ANALYSE_PSUB8x8);
137 sps->crop.i_left = 0;
139 sps->crop.i_right = sps->i_mb_width*16 - param->i_width;
140 sps->crop.i_bottom = (sps->i_mb_height*16 - param->i_height) >> param->b_interlaced;
141 sps->b_crop = sps->crop.i_left || sps->crop.i_top ||
142 sps->crop.i_right || sps->crop.i_bottom;
144 sps->vui.b_aspect_ratio_info_present = 0;
145 if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
147 sps->vui.b_aspect_ratio_info_present = 1;
148 sps->vui.i_sar_width = param->vui.i_sar_width;
149 sps->vui.i_sar_height= param->vui.i_sar_height;
152 sps->vui.b_overscan_info_present = ( param->vui.i_overscan ? 1 : 0 );
153 if( sps->vui.b_overscan_info_present )
154 sps->vui.b_overscan_info = ( param->vui.i_overscan == 2 ? 1 : 0 );
156 sps->vui.b_signal_type_present = 0;
157 sps->vui.i_vidformat = ( param->vui.i_vidformat <= 5 ? param->vui.i_vidformat : 5 );
158 sps->vui.b_fullrange = ( param->vui.b_fullrange ? 1 : 0 );
159 sps->vui.b_color_description_present = 0;
161 sps->vui.i_colorprim = ( param->vui.i_colorprim <= 9 ? param->vui.i_colorprim : 2 );
162 sps->vui.i_transfer = ( param->vui.i_transfer <= 11 ? param->vui.i_transfer : 2 );
163 sps->vui.i_colmatrix = ( param->vui.i_colmatrix <= 9 ? param->vui.i_colmatrix : 2 );
164 if( sps->vui.i_colorprim != 2 ||
165 sps->vui.i_transfer != 2 ||
166 sps->vui.i_colmatrix != 2 )
168 sps->vui.b_color_description_present = 1;
171 if( sps->vui.i_vidformat != 5 ||
172 sps->vui.b_fullrange ||
173 sps->vui.b_color_description_present )
175 sps->vui.b_signal_type_present = 1;
178 /* FIXME: not sufficient for interlaced video */
179 sps->vui.b_chroma_loc_info_present = ( param->vui.i_chroma_loc ? 1 : 0 );
180 if( sps->vui.b_chroma_loc_info_present )
182 sps->vui.i_chroma_loc_top = param->vui.i_chroma_loc;
183 sps->vui.i_chroma_loc_bottom = param->vui.i_chroma_loc;
186 sps->vui.b_timing_info_present = 0;
187 if( param->i_fps_num > 0 && param->i_fps_den > 0)
189 sps->vui.b_timing_info_present = 1;
190 sps->vui.i_num_units_in_tick = param->i_fps_den;
191 sps->vui.i_time_scale = param->i_fps_num * 2;
192 sps->vui.b_fixed_frame_rate = 1;
195 sps->vui.i_num_reorder_frames = param->b_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
196 /* extra slot with pyramid so that we don't have to override the
197 * order of forgetting old pictures */
198 sps->vui.i_max_dec_frame_buffering =
199 sps->i_num_ref_frames = X264_MIN(16, X264_MAX(param->i_frame_reference, 1 + sps->vui.i_num_reorder_frames));
201 sps->vui.b_bitstream_restriction = 1;
202 if( sps->vui.b_bitstream_restriction )
204 sps->vui.b_motion_vectors_over_pic_boundaries = 1;
205 sps->vui.i_max_bytes_per_pic_denom = 0;
206 sps->vui.i_max_bits_per_mb_denom = 0;
207 sps->vui.i_log2_max_mv_length_horizontal =
208 sps->vui.i_log2_max_mv_length_vertical = (int)(log(param->analyse.i_mv_range*4-1)/log(2)) + 1;
213 void x264_sps_write( bs_t *s, x264_sps_t *sps )
215 bs_write( s, 8, sps->i_profile_idc );
216 bs_write( s, 1, sps->b_constraint_set0 );
217 bs_write( s, 1, sps->b_constraint_set1 );
218 bs_write( s, 1, sps->b_constraint_set2 );
220 bs_write( s, 5, 0 ); /* reserved */
222 bs_write( s, 8, sps->i_level_idc );
224 bs_write_ue( s, sps->i_id );
226 if( sps->i_profile_idc >= PROFILE_HIGH )
228 bs_write_ue( s, 1 ); // chroma_format_idc = 4:2:0
229 bs_write_ue( s, 0 ); // bit_depth_luma_minus8
230 bs_write_ue( s, 0 ); // bit_depth_chroma_minus8
231 bs_write( s, 1, sps->b_qpprime_y_zero_transform_bypass );
232 bs_write( s, 1, 0 ); // seq_scaling_matrix_present_flag
235 bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
236 bs_write_ue( s, sps->i_poc_type );
237 if( sps->i_poc_type == 0 )
239 bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
241 else if( sps->i_poc_type == 1 )
245 bs_write( s, 1, sps->b_delta_pic_order_always_zero );
246 bs_write_se( s, sps->i_offset_for_non_ref_pic );
247 bs_write_se( s, sps->i_offset_for_top_to_bottom_field );
248 bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );
250 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
252 bs_write_se( s, sps->i_offset_for_ref_frame[i] );
255 bs_write_ue( s, sps->i_num_ref_frames );
256 bs_write( s, 1, sps->b_gaps_in_frame_num_value_allowed );
257 bs_write_ue( s, sps->i_mb_width - 1 );
258 if (sps->b_frame_mbs_only)
260 bs_write_ue( s, sps->i_mb_height - 1);
264 bs_write_ue( s, sps->i_mb_height/2 - 1);
266 bs_write( s, 1, sps->b_frame_mbs_only );
267 if( !sps->b_frame_mbs_only )
269 bs_write( s, 1, sps->b_mb_adaptive_frame_field );
271 bs_write( s, 1, sps->b_direct8x8_inference );
273 bs_write( s, 1, sps->b_crop );
276 bs_write_ue( s, sps->crop.i_left / 2 );
277 bs_write_ue( s, sps->crop.i_right / 2 );
278 bs_write_ue( s, sps->crop.i_top / 2 );
279 bs_write_ue( s, sps->crop.i_bottom / 2 );
282 bs_write( s, 1, sps->b_vui );
285 bs_write1( s, sps->vui.b_aspect_ratio_info_present );
286 if( sps->vui.b_aspect_ratio_info_present )
289 static const struct { int w, h; int sar; } sar[] =
291 { 1, 1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
292 { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
293 { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
294 { 160,99, 13}, { 0, 0, -1 }
296 for( i = 0; sar[i].sar != -1; i++ )
298 if( sar[i].w == sps->vui.i_sar_width &&
299 sar[i].h == sps->vui.i_sar_height )
302 if( sar[i].sar != -1 )
304 bs_write( s, 8, sar[i].sar );
308 bs_write( s, 8, 255); /* aspect_ratio_idc (extended) */
309 bs_write( s, 16, sps->vui.i_sar_width );
310 bs_write( s, 16, sps->vui.i_sar_height );
314 bs_write1( s, sps->vui.b_overscan_info_present );
315 if( sps->vui.b_overscan_info_present )
316 bs_write1( s, sps->vui.b_overscan_info );
318 bs_write1( s, sps->vui.b_signal_type_present );
319 if( sps->vui.b_signal_type_present )
321 bs_write( s, 3, sps->vui.i_vidformat );
322 bs_write1( s, sps->vui.b_fullrange );
323 bs_write1( s, sps->vui.b_color_description_present );
324 if( sps->vui.b_color_description_present )
326 bs_write( s, 8, sps->vui.i_colorprim );
327 bs_write( s, 8, sps->vui.i_transfer );
328 bs_write( s, 8, sps->vui.i_colmatrix );
332 bs_write1( s, sps->vui.b_chroma_loc_info_present );
333 if( sps->vui.b_chroma_loc_info_present )
335 bs_write_ue( s, sps->vui.i_chroma_loc_top );
336 bs_write_ue( s, sps->vui.i_chroma_loc_bottom );
339 bs_write1( s, sps->vui.b_timing_info_present );
340 if( sps->vui.b_timing_info_present )
342 bs_write( s, 32, sps->vui.i_num_units_in_tick );
343 bs_write( s, 32, sps->vui.i_time_scale );
344 bs_write1( s, sps->vui.b_fixed_frame_rate );
347 bs_write1( s, 0 ); /* nal_hrd_parameters_present_flag */
348 bs_write1( s, 0 ); /* vcl_hrd_parameters_present_flag */
349 bs_write1( s, 0 ); /* pic_struct_present_flag */
350 bs_write1( s, sps->vui.b_bitstream_restriction );
351 if( sps->vui.b_bitstream_restriction )
353 bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
354 bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
355 bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
356 bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
357 bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
358 bs_write_ue( s, sps->vui.i_num_reorder_frames );
359 bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
363 bs_rbsp_trailing( s );
366 void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps )
371 pps->i_sps_id = sps->i_id;
372 pps->b_cabac = param->b_cabac;
374 pps->b_pic_order = 0;
375 pps->i_num_slice_groups = 1;
377 pps->i_num_ref_idx_l0_active = 1;
378 pps->i_num_ref_idx_l1_active = 1;
380 pps->b_weighted_pred = 0;
381 pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
383 pps->i_pic_init_qp = param->rc.i_rc_method == X264_RC_ABR ? 26 : param->rc.i_qp_constant;
384 pps->i_pic_init_qs = 26;
386 pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
387 pps->b_deblocking_filter_control = 1;
388 pps->b_constrained_intra_pred = 0;
389 pps->b_redundant_pic_cnt = 0;
391 pps->b_transform_8x8_mode = param->analyse.b_transform_8x8 ? 1 : 0;
393 pps->i_cqm_preset = param->i_cqm_preset;
394 switch( pps->i_cqm_preset )
397 for( i = 0; i < 6; i++ )
398 pps->scaling_list[i] = x264_cqm_flat16;
401 for( i = 0; i < 6; i++ )
402 pps->scaling_list[i] = x264_cqm_jvt[i];
404 case X264_CQM_CUSTOM:
405 /* match the transposed DCT & zigzag */
406 transpose( param->cqm_4iy, 4 );
407 transpose( param->cqm_4ic, 4 );
408 transpose( param->cqm_4py, 4 );
409 transpose( param->cqm_4pc, 4 );
410 transpose( param->cqm_8iy, 8 );
411 transpose( param->cqm_8py, 8 );
412 pps->scaling_list[CQM_4IY] = param->cqm_4iy;
413 pps->scaling_list[CQM_4IC] = param->cqm_4ic;
414 pps->scaling_list[CQM_4PY] = param->cqm_4py;
415 pps->scaling_list[CQM_4PC] = param->cqm_4pc;
416 pps->scaling_list[CQM_8IY+4] = param->cqm_8iy;
417 pps->scaling_list[CQM_8PY+4] = param->cqm_8py;
418 for( i = 0; i < 6; i++ )
419 for( j = 0; j < (i<4?16:64); j++ )
420 if( pps->scaling_list[i][j] == 0 )
421 pps->scaling_list[i] = x264_cqm_jvt[i];
426 void x264_pps_write( bs_t *s, x264_pps_t *pps )
428 bs_write_ue( s, pps->i_id );
429 bs_write_ue( s, pps->i_sps_id );
431 bs_write( s, 1, pps->b_cabac );
432 bs_write( s, 1, pps->b_pic_order );
433 bs_write_ue( s, pps->i_num_slice_groups - 1 );
435 bs_write_ue( s, pps->i_num_ref_idx_l0_active - 1 );
436 bs_write_ue( s, pps->i_num_ref_idx_l1_active - 1 );
437 bs_write( s, 1, pps->b_weighted_pred );
438 bs_write( s, 2, pps->b_weighted_bipred );
440 bs_write_se( s, pps->i_pic_init_qp - 26 );
441 bs_write_se( s, pps->i_pic_init_qs - 26 );
442 bs_write_se( s, pps->i_chroma_qp_index_offset );
444 bs_write( s, 1, pps->b_deblocking_filter_control );
445 bs_write( s, 1, pps->b_constrained_intra_pred );
446 bs_write( s, 1, pps->b_redundant_pic_cnt );
448 if( pps->b_transform_8x8_mode || pps->i_cqm_preset != X264_CQM_FLAT )
450 bs_write( s, 1, pps->b_transform_8x8_mode );
451 bs_write( s, 1, (pps->i_cqm_preset != X264_CQM_FLAT) );
452 if( pps->i_cqm_preset != X264_CQM_FLAT )
454 scaling_list_write( s, pps, CQM_4IY );
455 scaling_list_write( s, pps, CQM_4IC );
456 bs_write( s, 1, 0 ); // Cr = Cb
457 scaling_list_write( s, pps, CQM_4PY );
458 scaling_list_write( s, pps, CQM_4PC );
459 bs_write( s, 1, 0 ); // Cr = Cb
460 if( pps->b_transform_8x8_mode )
462 scaling_list_write( s, pps, CQM_8IY+4 );
463 scaling_list_write( s, pps, CQM_8PY+4 );
466 bs_write_se( s, pps->i_chroma_qp_index_offset );
469 bs_rbsp_trailing( s );
472 void x264_sei_version_write( x264_t *h, bs_t *s )
475 // random ID number generated according to ISO-11578
476 const uint8_t uuid[16] = {
477 0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
478 0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
480 char *opts = x264_param2string( &h->param, 0 );
481 char *version = x264_malloc( 200 + strlen(opts) );
484 sprintf( version, "x264 - core %d%s - H.264/MPEG-4 AVC codec - "
485 "Copyleft 2003-2008 - http://www.videolan.org/x264.html - options: %s",
486 X264_BUILD, X264_VERSION, opts );
487 length = strlen(version)+1+16;
489 bs_write( s, 8, 0x5 ); // payload_type = user_data_unregistered
491 for( i = 0; i <= length-255; i += 255 )
492 bs_write( s, 8, 255 );
493 bs_write( s, 8, length-i );
495 for( i = 0; i < 16; i++ )
496 bs_write( s, 8, uuid[i] );
497 for( i = 0; i < length-16; i++ )
498 bs_write( s, 8, version[i] );
500 bs_rbsp_trailing( s );
503 x264_free( version );
506 const x264_level_t x264_levels[] =
508 { 10, 1485, 99, 152064, 64, 175, 64, 64, 0, 0, 0, 1 },
509 // {"1b", 1485, 99, 152064, 128, 350, 64, 64, 0, 0, 0, 1 },
510 { 11, 3000, 396, 345600, 192, 500, 128, 64, 0, 0, 0, 1 },
511 { 12, 6000, 396, 912384, 384, 1000, 128, 64, 0, 0, 0, 1 },
512 { 13, 11880, 396, 912384, 768, 2000, 128, 64, 0, 0, 0, 1 },
513 { 20, 11880, 396, 912384, 2000, 2000, 128, 64, 0, 0, 0, 1 },
514 { 21, 19800, 792, 1824768, 4000, 4000, 256, 64, 0, 0, 0, 0 },
515 { 22, 20250, 1620, 3110400, 4000, 4000, 256, 64, 0, 0, 0, 0 },
516 { 30, 40500, 1620, 3110400, 10000, 10000, 256, 32, 22, 0, 1, 0 },
517 { 31, 108000, 3600, 6912000, 14000, 14000, 512, 16, 60, 1, 1, 0 },
518 { 32, 216000, 5120, 7864320, 20000, 20000, 512, 16, 60, 1, 1, 0 },
519 { 40, 245760, 8192, 12582912, 20000, 25000, 512, 16, 60, 1, 1, 0 },
520 { 41, 245760, 8192, 12582912, 50000, 62500, 512, 16, 24, 1, 1, 0 },
521 { 42, 522240, 8704, 13369344, 50000, 62500, 512, 16, 24, 1, 1, 1 },
522 { 50, 589824, 22080, 42393600, 135000, 135000, 512, 16, 24, 1, 1, 1 },
523 { 51, 983040, 36864, 70778880, 240000, 240000, 512, 16, 24, 1, 1, 1 },
527 void x264_validate_levels( x264_t *h )
531 const x264_level_t *l = x264_levels;
532 while( l->level_idc != 0 && l->level_idc != h->param.i_level_idc )
535 mbs = h->sps->i_mb_width * h->sps->i_mb_height;
536 if( l->frame_size < mbs
537 || l->frame_size*8 < h->sps->i_mb_width * h->sps->i_mb_width
538 || l->frame_size*8 < h->sps->i_mb_height * h->sps->i_mb_height )
539 x264_log( h, X264_LOG_WARNING, "frame MB size (%dx%d) > level limit (%d)\n",
540 h->sps->i_mb_width, h->sps->i_mb_height, l->frame_size );
542 #define CHECK( name, limit, val ) \
543 if( (val) > (limit) ) \
544 x264_log( h, X264_LOG_WARNING, name " (%d) > level limit (%d)\n", (int)(val), (limit) );
546 CHECK( "DPB size", l->dpb, mbs * 384 * h->sps->i_num_ref_frames );
547 CHECK( "VBV bitrate", l->bitrate, h->param.rc.i_vbv_max_bitrate );
548 CHECK( "VBV buffer", l->cpb, h->param.rc.i_vbv_buffer_size );
549 CHECK( "MV range", l->mv_range, h->param.analyse.i_mv_range );
551 if( h->param.i_fps_den > 0 )
552 CHECK( "MB rate", l->mbps, (int64_t)mbs * h->param.i_fps_num / h->param.i_fps_den );
553 if( h->sps->b_direct8x8_inference < l->direct8x8 )
554 x264_log( h, X264_LOG_WARNING, "direct 8x8 inference (0) < level requirement (1)\n" );
556 /* TODO check the rest of the limits */