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 *****************************************************************************/
36 #include "common/common.h"
37 #include "common/macroblock.h"
42 static const uint8_t *const x264_cqm_jvt[6] =
44 x264_cqm_jvt4i, x264_cqm_jvt4p,
45 x264_cqm_jvt4i, x264_cqm_jvt4p,
46 x264_cqm_jvt8i, x264_cqm_jvt8p
49 static void scaling_list_write( bs_t *s, x264_pps_t *pps, int idx )
51 const int len = idx<4 ? 16 : 64;
52 const int *zigzag = idx<4 ? x264_zigzag_scan4 : x264_zigzag_scan8;
53 const uint8_t *list = pps->scaling_list[idx];
54 const uint8_t *def_list = (idx==CQM_4IC) ? pps->scaling_list[CQM_4IY]
55 : (idx==CQM_4PC) ? pps->scaling_list[CQM_4PY]
58 if( memcmp( list, def_list, len ) )
60 bs_write( s, 1, 1 ); // scaling_list_present_flag
61 for( j = 0; j < len; j++ )
62 bs_write_se( s, list[zigzag[j]] - (j>0 ? list[zigzag[j-1]] : 8) ); // delta
65 bs_write( s, 1, 0 ); // scaling_list_present_flag
68 void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
72 sps->b_qpprime_y_zero_transform_bypass = !param->rc.b_cbr && param->rc.i_qp_constant == 0;
73 if( sps->b_qpprime_y_zero_transform_bypass )
74 sps->i_profile_idc = PROFILE_HIGH444;
75 else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT )
76 sps->i_profile_idc = PROFILE_HIGH;
77 else if( param->b_cabac || param->i_bframe > 0 )
78 sps->i_profile_idc = PROFILE_MAIN;
80 sps->i_profile_idc = PROFILE_BASELINE;
81 sps->i_level_idc = param->i_level_idc;
83 sps->b_constraint_set0 = 0;
84 sps->b_constraint_set1 = 0;
85 sps->b_constraint_set2 = 0;
87 sps->i_log2_max_frame_num = 4; /* at least 4 */
88 while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
90 sps->i_log2_max_frame_num++;
92 sps->i_log2_max_frame_num++; /* just in case */
95 if( sps->i_poc_type == 0 )
97 sps->i_log2_max_poc_lsb = sps->i_log2_max_frame_num + 1; /* max poc = 2*frame_num */
99 else if( sps->i_poc_type == 1 )
104 sps->b_delta_pic_order_always_zero = 1;
105 sps->i_offset_for_non_ref_pic = 0;
106 sps->i_offset_for_top_to_bottom_field = 0;
107 sps->i_num_ref_frames_in_poc_cycle = 0;
109 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
111 sps->i_offset_for_ref_frame[i] = 0;
115 sps->vui.i_num_reorder_frames = param->b_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
116 sps->vui.i_max_dec_frame_buffering =
117 sps->i_num_ref_frames = X264_MIN(16, param->i_frame_reference + sps->vui.i_num_reorder_frames);
119 sps->b_gaps_in_frame_num_value_allowed = 0;
120 sps->i_mb_width = ( param->i_width + 15 ) / 16;
121 sps->i_mb_height= ( param->i_height + 15 )/ 16;
122 sps->b_frame_mbs_only = 1;
123 sps->b_mb_adaptive_frame_field = 0;
124 sps->b_direct8x8_inference = 0;
125 if( sps->b_frame_mbs_only == 0 ||
126 !(param->analyse.inter & X264_ANALYSE_PSUB8x8) )
128 sps->b_direct8x8_inference = 1;
131 if( param->i_width % 16 != 0 || param->i_height % 16 != 0 )
134 sps->crop.i_left = 0;
135 sps->crop.i_right = ( 16 - param->i_width % 16)/2;
137 sps->crop.i_bottom = ( 16 - param->i_height % 16)/2;
142 sps->crop.i_left = 0;
143 sps->crop.i_right = 0;
145 sps->crop.i_bottom = 0;
149 sps->vui.b_aspect_ratio_info_present = 0;
151 if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
153 sps->vui.b_aspect_ratio_info_present = 1;
154 sps->vui.i_sar_width = param->vui.i_sar_width;
155 sps->vui.i_sar_height= param->vui.i_sar_height;
157 sps->b_vui |= sps->vui.b_aspect_ratio_info_present;
159 if( param->i_fps_num > 0 && param->i_fps_den > 0)
161 sps->vui.b_timing_info_present = 1;
162 /* The standard is confusing me, but this seems to work best
163 with other encoders */
164 sps->vui.i_num_units_in_tick = param->i_fps_den;
165 sps->vui.i_time_scale = param->i_fps_num;
166 sps->vui.b_fixed_frame_rate = 1;
168 sps->b_vui |= sps->vui.b_timing_info_present;
170 sps->vui.b_bitstream_restriction = param->i_bframe > 0;
171 if( sps->vui.b_bitstream_restriction )
173 sps->vui.b_motion_vectors_over_pic_boundaries = 1;
174 sps->vui.i_max_bytes_per_pic_denom = 0;
175 sps->vui.i_max_bits_per_mb_denom = 0;
176 sps->vui.i_log2_max_mv_length_horizontal =
177 sps->vui.i_log2_max_mv_length_vertical = (int)(log(param->analyse.i_mv_range*4-1)/log(2)) + 1;
179 sps->b_vui |= sps->vui.b_bitstream_restriction;
183 void x264_sps_write( bs_t *s, x264_sps_t *sps )
185 bs_write( s, 8, sps->i_profile_idc );
186 bs_write( s, 1, sps->b_constraint_set0 );
187 bs_write( s, 1, sps->b_constraint_set1 );
188 bs_write( s, 1, sps->b_constraint_set2 );
190 bs_write( s, 5, 0 ); /* reserved */
192 bs_write( s, 8, sps->i_level_idc );
194 bs_write_ue( s, sps->i_id );
196 if( sps->i_profile_idc >= PROFILE_HIGH )
198 bs_write_ue( s, 1 ); // chroma_format_idc = 4:2:0
199 bs_write_ue( s, 0 ); // bit_depth_luma_minus8
200 bs_write_ue( s, 0 ); // bit_depth_chroma_minus8
201 bs_write( s, 1, sps->b_qpprime_y_zero_transform_bypass );
202 bs_write( s, 1, 0 ); // seq_scaling_matrix_present_flag
205 bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
206 bs_write_ue( s, sps->i_poc_type );
207 if( sps->i_poc_type == 0 )
209 bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
211 else if( sps->i_poc_type == 1 )
215 bs_write( s, 1, sps->b_delta_pic_order_always_zero );
216 bs_write_se( s, sps->i_offset_for_non_ref_pic );
217 bs_write_se( s, sps->i_offset_for_top_to_bottom_field );
218 bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );
220 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
222 bs_write_se( s, sps->i_offset_for_ref_frame[i] );
225 bs_write_ue( s, sps->i_num_ref_frames );
226 bs_write( s, 1, sps->b_gaps_in_frame_num_value_allowed );
227 bs_write_ue( s, sps->i_mb_width - 1 );
228 bs_write_ue( s, sps->i_mb_height - 1);
229 bs_write( s, 1, sps->b_frame_mbs_only );
230 if( !sps->b_frame_mbs_only )
232 bs_write( s, 1, sps->b_mb_adaptive_frame_field );
234 bs_write( s, 1, sps->b_direct8x8_inference );
236 bs_write( s, 1, sps->b_crop );
239 bs_write_ue( s, sps->crop.i_left );
240 bs_write_ue( s, sps->crop.i_right );
241 bs_write_ue( s, sps->crop.i_top );
242 bs_write_ue( s, sps->crop.i_bottom );
245 bs_write( s, 1, sps->b_vui );
248 bs_write1( s, sps->vui.b_aspect_ratio_info_present );
249 if( sps->vui.b_aspect_ratio_info_present )
252 static const struct { int w, h; int sar; } sar[] =
254 { 1, 1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
255 { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
256 { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
257 { 160,99, 13}, { 0, 0, -1 }
259 for( i = 0; sar[i].sar != -1; i++ )
261 if( sar[i].w == sps->vui.i_sar_width &&
262 sar[i].h == sps->vui.i_sar_height )
265 if( sar[i].sar != -1 )
267 bs_write( s, 8, sar[i].sar );
271 bs_write( s, 8, 255); /* aspect_ratio_idc (extented) */
272 bs_write( s, 16, sps->vui.i_sar_width );
273 bs_write( s, 16, sps->vui.i_sar_height );
277 bs_write1( s, 0 ); /* overscan_info_present_flag */
279 bs_write1( s, 0 ); /* video_signal_type_present_flag */
281 bs_write( s, 3, 5 ); /* unspecified video format */
282 bs_write1( s, 1 ); /* video full range flag */
283 bs_write1( s, 0 ); /* colour description present flag */
285 bs_write1( s, 0 ); /* chroma_loc_info_present_flag */
287 bs_write1( s, sps->vui.b_timing_info_present );
288 if( sps->vui.b_timing_info_present )
290 bs_write( s, 32, sps->vui.i_num_units_in_tick );
291 bs_write( s, 32, sps->vui.i_time_scale );
292 bs_write1( s, sps->vui.b_fixed_frame_rate );
295 bs_write1( s, 0 ); /* nal_hrd_parameters_present_flag */
296 bs_write1( s, 0 ); /* vcl_hrd_parameters_present_flag */
297 bs_write1( s, 0 ); /* pic_struct_present_flag */
298 bs_write1( s, sps->vui.b_bitstream_restriction );
299 if( sps->vui.b_bitstream_restriction )
301 bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
302 bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
303 bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
304 bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
305 bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
306 bs_write_ue( s, sps->vui.i_num_reorder_frames );
307 bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
311 bs_rbsp_trailing( s );
314 void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps )
319 pps->i_sps_id = sps->i_id;
320 pps->b_cabac = param->b_cabac;
322 pps->b_pic_order = 0;
323 pps->i_num_slice_groups = 1;
326 if( pps->i_num_slice_groups > 1 )
328 pps->i_slice_group_map_type = 0;
329 if( pps->i_slice_group_map_type == 0 )
331 for( i = 0; i < pps->i_num_slice_groups; i++ )
333 pps->i_run_length[i] = 1;
336 else if( pps->i_slice_group_map_type == 2 )
338 for( i = 0; i < pps->i_num_slice_groups; i++ )
340 pps->i_top_left[i] = 0;
341 pps->i_bottom_right[i] = 0;
344 else if( pps->i_slice_group_map_type >= 3 &&
345 pps->i_slice_group_map_type <= 5 )
347 pps->b_slice_group_change_direction = 0;
348 pps->i_slice_group_change_rate = 0;
350 else if( pps->i_slice_group_map_type == 6 )
352 pps->i_pic_size_in_map_units = 1;
353 for( i = 0; i < pps->i_pic_size_in_map_units; i++ )
355 pps->i_slice_group_id[i] = 0;
360 pps->i_num_ref_idx_l0_active = 1;
361 pps->i_num_ref_idx_l1_active = 1;
363 pps->b_weighted_pred = 0;
364 pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
366 pps->i_pic_init_qp = 26;
367 pps->i_pic_init_qs = 26;
369 pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
370 pps->b_deblocking_filter_control = 1;
371 pps->b_constrained_intra_pred = 0;
372 pps->b_redundant_pic_cnt = 0;
374 pps->b_transform_8x8_mode = param->analyse.b_transform_8x8 ? 1 : 0;
376 pps->i_cqm_preset = param->i_cqm_preset;
377 switch( pps->i_cqm_preset )
380 for( i = 0; i < 6; i++ )
381 pps->scaling_list[i] = x264_cqm_flat16;
384 for( i = 0; i < 6; i++ )
385 pps->scaling_list[i] = x264_cqm_jvt[i];
387 case X264_CQM_CUSTOM:
388 pps->scaling_list[CQM_4IY] = param->cqm_4iy;
389 pps->scaling_list[CQM_4IC] = param->cqm_4ic;
390 pps->scaling_list[CQM_4PY] = param->cqm_4py;
391 pps->scaling_list[CQM_4PC] = param->cqm_4pc;
392 pps->scaling_list[CQM_8IY+4] = param->cqm_8iy;
393 pps->scaling_list[CQM_8PY+4] = param->cqm_8py;
394 for( i = 0; i < 6; i++ )
395 for( j = 0; j < (i<4?16:64); j++ )
396 if( pps->scaling_list[i][j] == 0 )
397 pps->scaling_list[i] = x264_cqm_jvt[i];
402 void x264_pps_write( bs_t *s, x264_pps_t *pps )
404 bs_write_ue( s, pps->i_id );
405 bs_write_ue( s, pps->i_sps_id );
407 bs_write( s, 1, pps->b_cabac );
408 bs_write( s, 1, pps->b_pic_order );
409 bs_write_ue( s, pps->i_num_slice_groups - 1 );
412 if( pps->i_num_slice_groups > 1 )
416 bs_write_ue( s, pps->i_slice_group_map_type );
417 if( pps->i_slice_group_map_type == 0 )
419 for( i = 0; i < pps->i_num_slice_groups; i++ )
421 bs_write_ue( s, pps->i_run_length[i] - 1 );
424 else if( pps->i_slice_group_map_type == 2 )
426 for( i = 0; i < pps->i_num_slice_groups; i++ )
428 bs_write_ue( s, pps->i_top_left[i] );
429 bs_write_ue( s, pps->i_bottom_right[i] );
432 else if( pps->i_slice_group_map_type >= 3 &&
433 pps->i_slice_group_map_type <= 5 )
435 bs_write( s, 1, pps->b_slice_group_change_direction );
436 bs_write_ue( s, pps->b_slice_group_change_direction - 1 );
438 else if( pps->i_slice_group_map_type == 6 )
440 bs_write_ue( s, pps->i_pic_size_in_map_units - 1 );
441 for( i = 0; i < pps->i_pic_size_in_map_units; i++ )
444 /* bs_write( s, ceil( log2( pps->i_pic_size_in_map_units +1 ) ),
445 * pps->i_slice_group_id[i] );
452 bs_write_ue( s, pps->i_num_ref_idx_l0_active - 1 );
453 bs_write_ue( s, pps->i_num_ref_idx_l1_active - 1 );
454 bs_write( s, 1, pps->b_weighted_pred );
455 bs_write( s, 2, pps->b_weighted_bipred );
457 bs_write_se( s, pps->i_pic_init_qp - 26 );
458 bs_write_se( s, pps->i_pic_init_qs - 26 );
459 bs_write_se( s, pps->i_chroma_qp_index_offset );
461 bs_write( s, 1, pps->b_deblocking_filter_control );
462 bs_write( s, 1, pps->b_constrained_intra_pred );
463 bs_write( s, 1, pps->b_redundant_pic_cnt );
465 if( pps->b_transform_8x8_mode || pps->i_cqm_preset != X264_CQM_FLAT )
467 bs_write( s, 1, pps->b_transform_8x8_mode );
468 bs_write( s, 1, (pps->i_cqm_preset != X264_CQM_FLAT) );
469 if( pps->i_cqm_preset != X264_CQM_FLAT )
471 scaling_list_write( s, pps, CQM_4IY );
472 scaling_list_write( s, pps, CQM_4IC );
473 bs_write( s, 1, 0 ); // Cr = Cb
474 scaling_list_write( s, pps, CQM_4PY );
475 scaling_list_write( s, pps, CQM_4PC );
476 bs_write( s, 1, 0 ); // Cr = Cb
477 if( pps->b_transform_8x8_mode )
479 scaling_list_write( s, pps, CQM_8IY+4 );
480 scaling_list_write( s, pps, CQM_8PY+4 );
483 bs_write_se( s, pps->i_chroma_qp_index_offset );
486 bs_rbsp_trailing( s );
489 void x264_sei_version_write( bs_t *s )
492 // random ID number generated according to ISO-11578
493 const uint8_t uuid[16] = {
494 0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
495 0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
499 sprintf( version, "x264 - core %d%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html",
500 X264_BUILD, X264_VERSION );
501 length = strlen(version)+1+16;
503 bs_write( s, 8, 0x5 ); // payload_type = user_data_unregistered
504 while( length > 255 )
505 bs_write( s, 8, 255 ), length -= 255;
506 bs_write( s, 8, length ); // payload_size
508 for( i = 0; i < 16; i++ )
509 bs_write( s, 8, uuid[i] );
510 for( i = 0; i < length-16; i++ )
511 bs_write( s, 8, version[i] );
513 bs_rbsp_trailing( s );