1 /*****************************************************************************
2 * set: h264 encoder (SPS and PPS init and write)
3 *****************************************************************************
4 * Copyright (C) 2003 Laurent Aimar
5 * $Id: set.c,v 1.1 2004/06/03 19:27:08 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
28 #include "common/common.h"
33 static void transpose( uint8_t *buf, int w )
36 for( i = 0; i < w; i++ )
37 for( j = 0; j < i; j++ )
38 XCHG( uint8_t, buf[w*i+j], buf[w*j+i] );
41 static void scaling_list_write( bs_t *s, x264_pps_t *pps, int idx )
43 const int len = idx<4 ? 16 : 64;
44 const int *zigzag = idx<4 ? x264_zigzag_scan4 : x264_zigzag_scan8;
45 const uint8_t *list = pps->scaling_list[idx];
46 const uint8_t *def_list = (idx==CQM_4IC) ? pps->scaling_list[CQM_4IY]
47 : (idx==CQM_4PC) ? pps->scaling_list[CQM_4PY]
49 if( !memcmp( list, def_list, len ) )
50 bs_write( s, 1, 0 ); // scaling_list_present_flag
51 else if( !memcmp( list, x264_cqm_jvt[idx], len ) )
53 bs_write( s, 1, 1 ); // scaling_list_present_flag
54 bs_write_se( s, -8 ); // use jvt list
59 bs_write( s, 1, 1 ); // scaling_list_present_flag
61 // try run-length compression of trailing values
62 for( run = len; run > 1; run-- )
63 if( list[zigzag[run-1]] != list[zigzag[run-2]] )
65 if( run < len && len - run < bs_size_se( (int8_t)-list[zigzag[run]] ) )
68 for( j = 0; j < run; j++ )
69 bs_write_se( s, (int8_t)(list[zigzag[j]] - (j>0 ? list[zigzag[j-1]] : 8)) ); // delta
72 bs_write_se( s, (int8_t)-list[zigzag[run]] );
76 void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
80 sps->b_qpprime_y_zero_transform_bypass = !param->rc.b_cbr && param->rc.i_qp_constant == 0;
81 if( sps->b_qpprime_y_zero_transform_bypass )
82 sps->i_profile_idc = PROFILE_HIGH444;
83 else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT )
84 sps->i_profile_idc = PROFILE_HIGH;
85 else if( param->b_cabac || param->i_bframe > 0 )
86 sps->i_profile_idc = PROFILE_MAIN;
88 sps->i_profile_idc = PROFILE_BASELINE;
89 sps->i_level_idc = param->i_level_idc;
91 sps->b_constraint_set0 = sps->i_profile_idc == PROFILE_BASELINE;
92 /* x264 doesn't support the features that are in Baseline and not in Main,
93 * namely arbitrary_slice_order and slice_groups. */
94 sps->b_constraint_set1 = sps->i_profile_idc <= PROFILE_MAIN;
95 /* Never set constraint_set2, it is not necessary and not used in real world. */
96 sps->b_constraint_set2 = 0;
98 sps->i_log2_max_frame_num = 4; /* at least 4 */
99 while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
101 sps->i_log2_max_frame_num++;
103 sps->i_log2_max_frame_num++; /* just in case */
106 if( sps->i_poc_type == 0 )
108 sps->i_log2_max_poc_lsb = sps->i_log2_max_frame_num + 1; /* max poc = 2*frame_num */
110 else if( sps->i_poc_type == 1 )
115 sps->b_delta_pic_order_always_zero = 1;
116 sps->i_offset_for_non_ref_pic = 0;
117 sps->i_offset_for_top_to_bottom_field = 0;
118 sps->i_num_ref_frames_in_poc_cycle = 0;
120 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
122 sps->i_offset_for_ref_frame[i] = 0;
128 sps->b_gaps_in_frame_num_value_allowed = 0;
129 sps->i_mb_width = ( param->i_width + 15 ) / 16;
130 sps->i_mb_height= ( param->i_height + 15 )/ 16;
131 sps->b_frame_mbs_only = 1;
132 sps->b_mb_adaptive_frame_field = 0;
133 sps->b_direct8x8_inference = 0;
134 if( sps->b_frame_mbs_only == 0 ||
135 !(param->analyse.inter & X264_ANALYSE_PSUB8x8) )
137 sps->b_direct8x8_inference = 1;
140 sps->crop.i_left = 0;
142 sps->crop.i_right = (- param->i_width) & 15;
143 sps->crop.i_bottom = (- param->i_height) & 15;
144 sps->b_crop = sps->crop.i_left || sps->crop.i_top ||
145 sps->crop.i_right || sps->crop.i_bottom;
147 sps->vui.b_aspect_ratio_info_present = 0;
148 if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
150 sps->vui.b_aspect_ratio_info_present = 1;
151 sps->vui.i_sar_width = param->vui.i_sar_width;
152 sps->vui.i_sar_height= param->vui.i_sar_height;
155 sps->vui.b_overscan_info_present = ( param->vui.i_overscan ? 1 : 0 );
156 if( sps->vui.b_overscan_info_present )
157 sps->vui.b_overscan_info = ( param->vui.i_overscan == 2 ? 1 : 0 );
159 sps->vui.b_signal_type_present = 0;
160 sps->vui.i_vidformat = ( param->vui.i_vidformat <= 5 ? param->vui.i_vidformat : 5 );
161 sps->vui.b_fullrange = ( param->vui.b_fullrange ? 1 : 0 );
162 sps->vui.b_color_description_present = 0;
164 sps->vui.i_colorprim = ( param->vui.i_colorprim <= 9 ? param->vui.i_colorprim : 2 );
165 sps->vui.i_transfer = ( param->vui.i_transfer <= 11 ? param->vui.i_transfer : 2 );
166 sps->vui.i_colmatrix = ( param->vui.i_colmatrix <= 9 ? param->vui.i_colmatrix : 2 );
167 if( sps->vui.i_colorprim != 2 ||
168 sps->vui.i_transfer != 2 ||
169 sps->vui.i_colmatrix != 2 )
171 sps->vui.b_color_description_present = 1;
174 if( sps->vui.i_vidformat != 5 ||
175 sps->vui.b_fullrange ||
176 sps->vui.b_color_description_present )
178 sps->vui.b_signal_type_present = 1;
181 /* FIXME: not sufficient for interlaced video */
182 sps->vui.b_chroma_loc_info_present = ( param->vui.i_chroma_loc ? 1 : 0 );
183 if( sps->vui.b_chroma_loc_info_present )
185 sps->vui.i_chroma_loc_top = param->vui.i_chroma_loc;
186 sps->vui.i_chroma_loc_bottom = param->vui.i_chroma_loc;
189 sps->vui.b_timing_info_present = 0;
190 if( param->i_fps_num > 0 && param->i_fps_den > 0)
192 sps->vui.b_timing_info_present = 1;
193 sps->vui.i_num_units_in_tick = param->i_fps_den;
194 sps->vui.i_time_scale = param->i_fps_num * 2;
195 sps->vui.b_fixed_frame_rate = 1;
198 sps->vui.i_num_reorder_frames = param->b_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
199 /* extra slot with pyramid so that we don't have to override the
200 * order of forgetting old pictures */
201 sps->vui.i_max_dec_frame_buffering =
202 sps->i_num_ref_frames = X264_MIN(16, param->i_frame_reference + sps->vui.i_num_reorder_frames + param->b_bframe_pyramid);
204 sps->vui.b_bitstream_restriction = 1;
205 if( sps->vui.b_bitstream_restriction )
207 sps->vui.b_motion_vectors_over_pic_boundaries = 1;
208 sps->vui.i_max_bytes_per_pic_denom = 0;
209 sps->vui.i_max_bits_per_mb_denom = 0;
210 sps->vui.i_log2_max_mv_length_horizontal =
211 sps->vui.i_log2_max_mv_length_vertical = (int)(log(param->analyse.i_mv_range*4-1)/log(2)) + 1;
216 void x264_sps_write( bs_t *s, x264_sps_t *sps )
218 bs_write( s, 8, sps->i_profile_idc );
219 bs_write( s, 1, sps->b_constraint_set0 );
220 bs_write( s, 1, sps->b_constraint_set1 );
221 bs_write( s, 1, sps->b_constraint_set2 );
223 bs_write( s, 5, 0 ); /* reserved */
225 bs_write( s, 8, sps->i_level_idc );
227 bs_write_ue( s, sps->i_id );
229 if( sps->i_profile_idc >= PROFILE_HIGH )
231 bs_write_ue( s, 1 ); // chroma_format_idc = 4:2:0
232 bs_write_ue( s, 0 ); // bit_depth_luma_minus8
233 bs_write_ue( s, 0 ); // bit_depth_chroma_minus8
234 bs_write( s, 1, sps->b_qpprime_y_zero_transform_bypass );
235 bs_write( s, 1, 0 ); // seq_scaling_matrix_present_flag
238 bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
239 bs_write_ue( s, sps->i_poc_type );
240 if( sps->i_poc_type == 0 )
242 bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
244 else if( sps->i_poc_type == 1 )
248 bs_write( s, 1, sps->b_delta_pic_order_always_zero );
249 bs_write_se( s, sps->i_offset_for_non_ref_pic );
250 bs_write_se( s, sps->i_offset_for_top_to_bottom_field );
251 bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );
253 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
255 bs_write_se( s, sps->i_offset_for_ref_frame[i] );
258 bs_write_ue( s, sps->i_num_ref_frames );
259 bs_write( s, 1, sps->b_gaps_in_frame_num_value_allowed );
260 bs_write_ue( s, sps->i_mb_width - 1 );
261 bs_write_ue( s, sps->i_mb_height - 1);
262 bs_write( s, 1, sps->b_frame_mbs_only );
263 if( !sps->b_frame_mbs_only )
265 bs_write( s, 1, sps->b_mb_adaptive_frame_field );
267 bs_write( s, 1, sps->b_direct8x8_inference );
269 bs_write( s, 1, sps->b_crop );
272 bs_write_ue( s, sps->crop.i_left / 2 );
273 bs_write_ue( s, sps->crop.i_right / 2 );
274 bs_write_ue( s, sps->crop.i_top / 2 );
275 bs_write_ue( s, sps->crop.i_bottom / 2 );
278 bs_write( s, 1, sps->b_vui );
281 bs_write1( s, sps->vui.b_aspect_ratio_info_present );
282 if( sps->vui.b_aspect_ratio_info_present )
285 static const struct { int w, h; int sar; } sar[] =
287 { 1, 1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
288 { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
289 { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
290 { 160,99, 13}, { 0, 0, -1 }
292 for( i = 0; sar[i].sar != -1; i++ )
294 if( sar[i].w == sps->vui.i_sar_width &&
295 sar[i].h == sps->vui.i_sar_height )
298 if( sar[i].sar != -1 )
300 bs_write( s, 8, sar[i].sar );
304 bs_write( s, 8, 255); /* aspect_ratio_idc (extented) */
305 bs_write( s, 16, sps->vui.i_sar_width );
306 bs_write( s, 16, sps->vui.i_sar_height );
310 bs_write1( s, sps->vui.b_overscan_info_present );
311 if( sps->vui.b_overscan_info_present )
312 bs_write1( s, sps->vui.b_overscan_info );
314 bs_write1( s, sps->vui.b_signal_type_present );
315 if( sps->vui.b_signal_type_present )
317 bs_write( s, 3, sps->vui.i_vidformat );
318 bs_write1( s, sps->vui.b_fullrange );
319 bs_write1( s, sps->vui.b_color_description_present );
320 if( sps->vui.b_color_description_present )
322 bs_write( s, 8, sps->vui.i_colorprim );
323 bs_write( s, 8, sps->vui.i_transfer );
324 bs_write( s, 8, sps->vui.i_colmatrix );
328 bs_write1( s, sps->vui.b_chroma_loc_info_present );
329 if( sps->vui.b_chroma_loc_info_present )
331 bs_write_ue( s, sps->vui.i_chroma_loc_top );
332 bs_write_ue( s, sps->vui.i_chroma_loc_bottom );
335 bs_write1( s, sps->vui.b_timing_info_present );
336 if( sps->vui.b_timing_info_present )
338 bs_write( s, 32, sps->vui.i_num_units_in_tick );
339 bs_write( s, 32, sps->vui.i_time_scale );
340 bs_write1( s, sps->vui.b_fixed_frame_rate );
343 bs_write1( s, 0 ); /* nal_hrd_parameters_present_flag */
344 bs_write1( s, 0 ); /* vcl_hrd_parameters_present_flag */
345 bs_write1( s, 0 ); /* pic_struct_present_flag */
346 bs_write1( s, sps->vui.b_bitstream_restriction );
347 if( sps->vui.b_bitstream_restriction )
349 bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
350 bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
351 bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
352 bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
353 bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
354 bs_write_ue( s, sps->vui.i_num_reorder_frames );
355 bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
359 bs_rbsp_trailing( s );
362 void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps )
367 pps->i_sps_id = sps->i_id;
368 pps->b_cabac = param->b_cabac;
370 pps->b_pic_order = 0;
371 pps->i_num_slice_groups = 1;
373 pps->i_num_ref_idx_l0_active = 1;
374 pps->i_num_ref_idx_l1_active = 1;
376 pps->b_weighted_pred = 0;
377 pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
379 pps->i_pic_init_qp = param->rc.b_cbr ? 26 : param->rc.i_qp_constant;
380 pps->i_pic_init_qs = 26;
382 pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
383 pps->b_deblocking_filter_control = 1;
384 pps->b_constrained_intra_pred = 0;
385 pps->b_redundant_pic_cnt = 0;
387 pps->b_transform_8x8_mode = param->analyse.b_transform_8x8 ? 1 : 0;
389 pps->i_cqm_preset = param->i_cqm_preset;
390 switch( pps->i_cqm_preset )
393 for( i = 0; i < 6; i++ )
394 pps->scaling_list[i] = x264_cqm_flat16;
397 for( i = 0; i < 6; i++ )
398 pps->scaling_list[i] = x264_cqm_jvt[i];
400 case X264_CQM_CUSTOM:
401 /* match the transposed DCT & zigzag */
402 transpose( param->cqm_4iy, 4 );
403 transpose( param->cqm_4ic, 4 );
404 transpose( param->cqm_4py, 4 );
405 transpose( param->cqm_4pc, 4 );
406 transpose( param->cqm_8iy, 8 );
407 transpose( param->cqm_8py, 8 );
408 pps->scaling_list[CQM_4IY] = param->cqm_4iy;
409 pps->scaling_list[CQM_4IC] = param->cqm_4ic;
410 pps->scaling_list[CQM_4PY] = param->cqm_4py;
411 pps->scaling_list[CQM_4PC] = param->cqm_4pc;
412 pps->scaling_list[CQM_8IY+4] = param->cqm_8iy;
413 pps->scaling_list[CQM_8PY+4] = param->cqm_8py;
414 for( i = 0; i < 6; i++ )
415 for( j = 0; j < (i<4?16:64); j++ )
416 if( pps->scaling_list[i][j] == 0 )
417 pps->scaling_list[i] = x264_cqm_jvt[i];
422 void x264_pps_write( bs_t *s, x264_pps_t *pps )
424 bs_write_ue( s, pps->i_id );
425 bs_write_ue( s, pps->i_sps_id );
427 bs_write( s, 1, pps->b_cabac );
428 bs_write( s, 1, pps->b_pic_order );
429 bs_write_ue( s, pps->i_num_slice_groups - 1 );
431 bs_write_ue( s, pps->i_num_ref_idx_l0_active - 1 );
432 bs_write_ue( s, pps->i_num_ref_idx_l1_active - 1 );
433 bs_write( s, 1, pps->b_weighted_pred );
434 bs_write( s, 2, pps->b_weighted_bipred );
436 bs_write_se( s, pps->i_pic_init_qp - 26 );
437 bs_write_se( s, pps->i_pic_init_qs - 26 );
438 bs_write_se( s, pps->i_chroma_qp_index_offset );
440 bs_write( s, 1, pps->b_deblocking_filter_control );
441 bs_write( s, 1, pps->b_constrained_intra_pred );
442 bs_write( s, 1, pps->b_redundant_pic_cnt );
444 if( pps->b_transform_8x8_mode || pps->i_cqm_preset != X264_CQM_FLAT )
446 bs_write( s, 1, pps->b_transform_8x8_mode );
447 bs_write( s, 1, (pps->i_cqm_preset != X264_CQM_FLAT) );
448 if( pps->i_cqm_preset != X264_CQM_FLAT )
450 scaling_list_write( s, pps, CQM_4IY );
451 scaling_list_write( s, pps, CQM_4IC );
452 bs_write( s, 1, 0 ); // Cr = Cb
453 scaling_list_write( s, pps, CQM_4PY );
454 scaling_list_write( s, pps, CQM_4PC );
455 bs_write( s, 1, 0 ); // Cr = Cb
456 if( pps->b_transform_8x8_mode )
458 scaling_list_write( s, pps, CQM_8IY+4 );
459 scaling_list_write( s, pps, CQM_8PY+4 );
462 bs_write_se( s, pps->i_chroma_qp_index_offset );
465 bs_rbsp_trailing( s );
468 void x264_sei_version_write( x264_t *h, bs_t *s )
471 // random ID number generated according to ISO-11578
472 const uint8_t uuid[16] = {
473 0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
474 0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
478 char *opts = x264_param2string( &h->param, 0 );
480 sprintf( version, "x264 - core %d%s - H.264/MPEG-4 AVC codec - "
481 "Copyleft 2005 - http://www.videolan.org/x264.html - options: %s",
482 X264_BUILD, X264_VERSION, opts );
484 length = strlen(version)+1+16;
486 bs_write( s, 8, 0x5 ); // payload_type = user_data_unregistered
488 for( i = 0; i <= length-255; i += 255 )
489 bs_write( s, 8, 255 );
490 bs_write( s, 8, length-i );
492 for( i = 0; i < 16; i++ )
493 bs_write( s, 8, uuid[i] );
494 for( i = 0; i < length-16; i++ )
495 bs_write( s, 8, version[i] );
497 bs_rbsp_trailing( s );
500 const x264_level_t x264_levels[] =
502 { 10, 1485, 99, 152064, 64, 175, 64, 64, 0, 0, 0, 1 },
503 // {"1b", 1485, 99, 152064, 128, 350, 64, 64, 0, 0, 0, 1 },
504 { 11, 3000, 396, 345600, 192, 500, 128, 64, 0, 0, 0, 1 },
505 { 12, 6000, 396, 912384, 384, 1000, 128, 64, 0, 0, 0, 1 },
506 { 13, 11880, 396, 912384, 768, 2000, 128, 64, 0, 0, 0, 1 },
507 { 20, 11880, 396, 912384, 2000, 2000, 128, 64, 0, 0, 0, 1 },
508 { 21, 19800, 792, 1824768, 4000, 4000, 256, 64, 0, 0, 0, 0 },
509 { 22, 20250, 1620, 3110400, 4000, 4000, 256, 64, 0, 0, 0, 0 },
510 { 30, 40500, 1620, 3110400, 10000, 10000, 256, 32, 22, 0, 1, 0 },
511 { 31, 108000, 3600, 6912000, 14000, 14000, 512, 16, 60, 1, 1, 0 },
512 { 32, 216000, 5120, 7864320, 20000, 20000, 512, 16, 60, 1, 1, 0 },
513 { 40, 245760, 8192, 12582912, 20000, 25000, 512, 16, 60, 1, 1, 0 },
514 { 41, 245760, 8192, 12582912, 50000, 62500, 512, 16, 24, 1, 1, 0 },
515 { 42, 522240, 8704, 13369344, 50000, 62500, 512, 16, 24, 1, 1, 1 },
516 { 50, 589824, 22080, 42393600, 135000, 135000, 512, 16, 24, 1, 1, 1 },
517 { 51, 983040, 36864, 70778880, 240000, 240000, 512, 16, 24, 1, 1, 1 },
521 void x264_validate_levels( x264_t *h )
525 const x264_level_t *l = x264_levels;
526 while( l->level_idc != 0 && l->level_idc != h->param.i_level_idc )
529 mbs = h->sps->i_mb_width * h->sps->i_mb_height;
530 if( l->frame_size < mbs
531 || l->frame_size*8 < h->sps->i_mb_width * h->sps->i_mb_width
532 || l->frame_size*8 < h->sps->i_mb_height * h->sps->i_mb_height )
533 x264_log( h, X264_LOG_WARNING, "frame MB size (%dx%d) > level limit (%d)\n",
534 h->sps->i_mb_width, h->sps->i_mb_height, l->frame_size );
536 #define CHECK( name, limit, val ) \
537 if( (val) > (limit) ) \
538 x264_log( h, X264_LOG_WARNING, name " (%d) > level limit (%d)\n", (int)(val), (limit) );
540 CHECK( "DPB size", l->dpb, mbs * 384 * h->sps->i_num_ref_frames );
541 CHECK( "VBV bitrate", l->bitrate, h->param.rc.i_vbv_max_bitrate );
542 CHECK( "VBV buffer", l->cpb, h->param.rc.i_vbv_buffer_size );
543 CHECK( "MV range", l->mv_range, h->param.analyse.i_mv_range );
545 if( h->param.i_fps_den > 0 )
546 CHECK( "MB rate", l->mbps, (int64_t)mbs * h->param.i_fps_num / h->param.i_fps_den );
548 /* TODO check the rest of the limits */