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"
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]
50 if( memcmp( list, def_list, len ) )
52 bs_write( s, 1, 1 ); // scaling_list_present_flag
53 for( j = 0; j < len; j++ )
54 bs_write_se( s, list[zigzag[j]] - (j>0 ? list[zigzag[j-1]] : 8) ); // delta
57 bs_write( s, 1, 0 ); // scaling_list_present_flag
60 void x264_sps_init( x264_sps_t *sps, int i_id, x264_param_t *param )
64 sps->b_qpprime_y_zero_transform_bypass = !param->rc.b_cbr && param->rc.i_qp_constant == 0;
65 if( sps->b_qpprime_y_zero_transform_bypass )
66 sps->i_profile_idc = PROFILE_HIGH444;
67 else if( param->analyse.b_transform_8x8 || param->i_cqm_preset != X264_CQM_FLAT )
68 sps->i_profile_idc = PROFILE_HIGH;
69 else if( param->b_cabac || param->i_bframe > 0 )
70 sps->i_profile_idc = PROFILE_MAIN;
72 sps->i_profile_idc = PROFILE_BASELINE;
73 sps->i_level_idc = param->i_level_idc;
75 sps->b_constraint_set0 = 0;
76 sps->b_constraint_set1 = 0;
77 sps->b_constraint_set2 = 0;
79 sps->i_log2_max_frame_num = 4; /* at least 4 */
80 while( (1 << sps->i_log2_max_frame_num) <= param->i_keyint_max )
82 sps->i_log2_max_frame_num++;
84 sps->i_log2_max_frame_num++; /* just in case */
87 if( sps->i_poc_type == 0 )
89 sps->i_log2_max_poc_lsb = sps->i_log2_max_frame_num + 1; /* max poc = 2*frame_num */
91 else if( sps->i_poc_type == 1 )
96 sps->b_delta_pic_order_always_zero = 1;
97 sps->i_offset_for_non_ref_pic = 0;
98 sps->i_offset_for_top_to_bottom_field = 0;
99 sps->i_num_ref_frames_in_poc_cycle = 0;
101 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
103 sps->i_offset_for_ref_frame[i] = 0;
107 sps->vui.i_num_reorder_frames = param->b_bframe_pyramid ? 2 : param->i_bframe ? 1 : 0;
108 /* extra slot with pyramid so that we don't have to override the
109 * order of forgetting old pictures */
110 sps->vui.i_max_dec_frame_buffering =
111 sps->i_num_ref_frames = X264_MIN(16, param->i_frame_reference + sps->vui.i_num_reorder_frames + param->b_bframe_pyramid);
113 sps->b_gaps_in_frame_num_value_allowed = 0;
114 sps->i_mb_width = ( param->i_width + 15 ) / 16;
115 sps->i_mb_height= ( param->i_height + 15 )/ 16;
116 sps->b_frame_mbs_only = 1;
117 sps->b_mb_adaptive_frame_field = 0;
118 sps->b_direct8x8_inference = 0;
119 if( sps->b_frame_mbs_only == 0 ||
120 !(param->analyse.inter & X264_ANALYSE_PSUB8x8) )
122 sps->b_direct8x8_inference = 1;
125 sps->crop.i_left = 0;
127 sps->crop.i_right = (- param->i_width) & 15;
128 sps->crop.i_bottom = (- param->i_height) & 15;
129 sps->b_crop = sps->crop.i_left || sps->crop.i_top ||
130 sps->crop.i_right || sps->crop.i_bottom;
133 sps->vui.b_aspect_ratio_info_present = 0;
135 if( param->vui.i_sar_width > 0 && param->vui.i_sar_height > 0 )
137 sps->vui.b_aspect_ratio_info_present = 1;
138 sps->vui.i_sar_width = param->vui.i_sar_width;
139 sps->vui.i_sar_height= param->vui.i_sar_height;
141 sps->b_vui |= sps->vui.b_aspect_ratio_info_present;
143 sps->vui.b_overscan_info_present = ( param->vui.i_overscan ? 1 : 0 );
144 if( sps->vui.b_overscan_info_present )
145 sps->vui.b_overscan_info = ( param->vui.i_overscan == 2 ? 1 : 0 );
146 sps->b_vui |= sps->vui.b_overscan_info_present;
148 sps->vui.b_signal_type_present = 0;
149 sps->vui.i_vidformat = ( param->vui.i_vidformat <= 5 ? param->vui.i_vidformat : 5 );
150 sps->vui.b_fullrange = ( param->vui.b_fullrange ? 1 : 0 );
151 sps->vui.b_color_description_present = 0;
153 sps->vui.i_colorprim = ( param->vui.i_colorprim <= 9 ? param->vui.i_colorprim : 2 );
154 sps->vui.i_transfer = ( param->vui.i_transfer <= 11 ? param->vui.i_transfer : 2 );
155 sps->vui.i_colmatrix = ( param->vui.i_colmatrix <= 9 ? param->vui.i_colmatrix : 2 );
156 if( sps->vui.i_colorprim != 2 ||
157 sps->vui.i_transfer != 2 ||
158 sps->vui.i_colmatrix != 2 )
160 sps->vui.b_color_description_present = 1;
163 if( sps->vui.i_vidformat != 5 ||
164 sps->vui.b_fullrange ||
165 sps->vui.b_color_description_present )
167 sps->vui.b_signal_type_present = 1;
169 sps->b_vui |= sps->vui.b_signal_type_present;
171 /* FIXME: not sufficient for interlaced video */
172 sps->vui.b_chroma_loc_info_present = ( param->vui.i_chroma_loc ? 1 : 0 );
173 if( sps->vui.b_chroma_loc_info_present )
175 sps->vui.i_chroma_loc_top = param->vui.i_chroma_loc;
176 sps->vui.i_chroma_loc_bottom = param->vui.i_chroma_loc;
178 sps->b_vui |= sps->vui.b_chroma_loc_info_present;
180 sps->vui.b_timing_info_present = 0;
181 if( param->i_fps_num > 0 && param->i_fps_den > 0)
183 sps->vui.b_timing_info_present = 1;
184 /* The standard is confusing me, but this seems to work best
185 with other encoders */
186 sps->vui.i_num_units_in_tick = param->i_fps_den;
187 sps->vui.i_time_scale = param->i_fps_num;
188 sps->vui.b_fixed_frame_rate = 1;
190 sps->b_vui |= sps->vui.b_timing_info_present;
192 sps->vui.b_bitstream_restriction = param->i_bframe > 0;
193 if( sps->vui.b_bitstream_restriction )
195 sps->vui.b_motion_vectors_over_pic_boundaries = 1;
196 sps->vui.i_max_bytes_per_pic_denom = 0;
197 sps->vui.i_max_bits_per_mb_denom = 0;
198 sps->vui.i_log2_max_mv_length_horizontal =
199 sps->vui.i_log2_max_mv_length_vertical = (int)(log(param->analyse.i_mv_range*4-1)/log(2)) + 1;
201 sps->b_vui |= sps->vui.b_bitstream_restriction;
205 void x264_sps_write( bs_t *s, x264_sps_t *sps )
207 bs_write( s, 8, sps->i_profile_idc );
208 bs_write( s, 1, sps->b_constraint_set0 );
209 bs_write( s, 1, sps->b_constraint_set1 );
210 bs_write( s, 1, sps->b_constraint_set2 );
212 bs_write( s, 5, 0 ); /* reserved */
214 bs_write( s, 8, sps->i_level_idc );
216 bs_write_ue( s, sps->i_id );
218 if( sps->i_profile_idc >= PROFILE_HIGH )
220 bs_write_ue( s, 1 ); // chroma_format_idc = 4:2:0
221 bs_write_ue( s, 0 ); // bit_depth_luma_minus8
222 bs_write_ue( s, 0 ); // bit_depth_chroma_minus8
223 bs_write( s, 1, sps->b_qpprime_y_zero_transform_bypass );
224 bs_write( s, 1, 0 ); // seq_scaling_matrix_present_flag
227 bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
228 bs_write_ue( s, sps->i_poc_type );
229 if( sps->i_poc_type == 0 )
231 bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
233 else if( sps->i_poc_type == 1 )
237 bs_write( s, 1, sps->b_delta_pic_order_always_zero );
238 bs_write_se( s, sps->i_offset_for_non_ref_pic );
239 bs_write_se( s, sps->i_offset_for_top_to_bottom_field );
240 bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );
242 for( i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
244 bs_write_se( s, sps->i_offset_for_ref_frame[i] );
247 bs_write_ue( s, sps->i_num_ref_frames );
248 bs_write( s, 1, sps->b_gaps_in_frame_num_value_allowed );
249 bs_write_ue( s, sps->i_mb_width - 1 );
250 bs_write_ue( s, sps->i_mb_height - 1);
251 bs_write( s, 1, sps->b_frame_mbs_only );
252 if( !sps->b_frame_mbs_only )
254 bs_write( s, 1, sps->b_mb_adaptive_frame_field );
256 bs_write( s, 1, sps->b_direct8x8_inference );
258 bs_write( s, 1, sps->b_crop );
261 bs_write_ue( s, sps->crop.i_left / 2 );
262 bs_write_ue( s, sps->crop.i_right / 2 );
263 bs_write_ue( s, sps->crop.i_top / 2 );
264 bs_write_ue( s, sps->crop.i_bottom / 2 );
267 bs_write( s, 1, sps->b_vui );
270 bs_write1( s, sps->vui.b_aspect_ratio_info_present );
271 if( sps->vui.b_aspect_ratio_info_present )
274 static const struct { int w, h; int sar; } sar[] =
276 { 1, 1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
277 { 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
278 { 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
279 { 160,99, 13}, { 0, 0, -1 }
281 for( i = 0; sar[i].sar != -1; i++ )
283 if( sar[i].w == sps->vui.i_sar_width &&
284 sar[i].h == sps->vui.i_sar_height )
287 if( sar[i].sar != -1 )
289 bs_write( s, 8, sar[i].sar );
293 bs_write( s, 8, 255); /* aspect_ratio_idc (extented) */
294 bs_write( s, 16, sps->vui.i_sar_width );
295 bs_write( s, 16, sps->vui.i_sar_height );
299 bs_write1( s, sps->vui.b_overscan_info_present );
300 if( sps->vui.b_overscan_info_present )
301 bs_write1( s, sps->vui.b_overscan_info );
303 bs_write1( s, sps->vui.b_signal_type_present );
304 if( sps->vui.b_signal_type_present )
306 bs_write( s, 3, sps->vui.i_vidformat );
307 bs_write1( s, sps->vui.b_fullrange );
308 bs_write1( s, sps->vui.b_color_description_present );
309 if( sps->vui.b_color_description_present )
311 bs_write( s, 8, sps->vui.i_colorprim );
312 bs_write( s, 8, sps->vui.i_transfer );
313 bs_write( s, 8, sps->vui.i_colmatrix );
317 bs_write1( s, sps->vui.b_chroma_loc_info_present );
318 if( sps->vui.b_chroma_loc_info_present )
320 bs_write_ue( s, sps->vui.i_chroma_loc_top );
321 bs_write_ue( s, sps->vui.i_chroma_loc_bottom );
324 bs_write1( s, sps->vui.b_timing_info_present );
325 if( sps->vui.b_timing_info_present )
327 bs_write( s, 32, sps->vui.i_num_units_in_tick );
328 bs_write( s, 32, sps->vui.i_time_scale );
329 bs_write1( s, sps->vui.b_fixed_frame_rate );
332 bs_write1( s, 0 ); /* nal_hrd_parameters_present_flag */
333 bs_write1( s, 0 ); /* vcl_hrd_parameters_present_flag */
334 bs_write1( s, 0 ); /* pic_struct_present_flag */
335 bs_write1( s, sps->vui.b_bitstream_restriction );
336 if( sps->vui.b_bitstream_restriction )
338 bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
339 bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
340 bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
341 bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
342 bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
343 bs_write_ue( s, sps->vui.i_num_reorder_frames );
344 bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
348 bs_rbsp_trailing( s );
351 void x264_pps_init( x264_pps_t *pps, int i_id, x264_param_t *param, x264_sps_t *sps )
356 pps->i_sps_id = sps->i_id;
357 pps->b_cabac = param->b_cabac;
359 pps->b_pic_order = 0;
360 pps->i_num_slice_groups = 1;
362 pps->i_num_ref_idx_l0_active = 1;
363 pps->i_num_ref_idx_l1_active = 1;
365 pps->b_weighted_pred = 0;
366 pps->b_weighted_bipred = param->analyse.b_weighted_bipred ? 2 : 0;
368 pps->i_pic_init_qp = 26;
369 pps->i_pic_init_qs = 26;
371 pps->i_chroma_qp_index_offset = param->analyse.i_chroma_qp_offset;
372 pps->b_deblocking_filter_control = 1;
373 pps->b_constrained_intra_pred = 0;
374 pps->b_redundant_pic_cnt = 0;
376 pps->b_transform_8x8_mode = param->analyse.b_transform_8x8 ? 1 : 0;
378 pps->i_cqm_preset = param->i_cqm_preset;
379 switch( pps->i_cqm_preset )
382 for( i = 0; i < 6; i++ )
383 pps->scaling_list[i] = x264_cqm_flat16;
386 for( i = 0; i < 6; i++ )
387 pps->scaling_list[i] = x264_cqm_jvt[i];
389 case X264_CQM_CUSTOM:
390 pps->scaling_list[CQM_4IY] = param->cqm_4iy;
391 pps->scaling_list[CQM_4IC] = param->cqm_4ic;
392 pps->scaling_list[CQM_4PY] = param->cqm_4py;
393 pps->scaling_list[CQM_4PC] = param->cqm_4pc;
394 pps->scaling_list[CQM_8IY+4] = param->cqm_8iy;
395 pps->scaling_list[CQM_8PY+4] = param->cqm_8py;
396 for( i = 0; i < 6; i++ )
397 for( j = 0; j < (i<4?16:64); j++ )
398 if( pps->scaling_list[i][j] == 0 )
399 pps->scaling_list[i] = x264_cqm_jvt[i];
404 void x264_pps_write( bs_t *s, x264_pps_t *pps )
406 bs_write_ue( s, pps->i_id );
407 bs_write_ue( s, pps->i_sps_id );
409 bs_write( s, 1, pps->b_cabac );
410 bs_write( s, 1, pps->b_pic_order );
411 bs_write_ue( s, pps->i_num_slice_groups - 1 );
413 bs_write_ue( s, pps->i_num_ref_idx_l0_active - 1 );
414 bs_write_ue( s, pps->i_num_ref_idx_l1_active - 1 );
415 bs_write( s, 1, pps->b_weighted_pred );
416 bs_write( s, 2, pps->b_weighted_bipred );
418 bs_write_se( s, pps->i_pic_init_qp - 26 );
419 bs_write_se( s, pps->i_pic_init_qs - 26 );
420 bs_write_se( s, pps->i_chroma_qp_index_offset );
422 bs_write( s, 1, pps->b_deblocking_filter_control );
423 bs_write( s, 1, pps->b_constrained_intra_pred );
424 bs_write( s, 1, pps->b_redundant_pic_cnt );
426 if( pps->b_transform_8x8_mode || pps->i_cqm_preset != X264_CQM_FLAT )
428 bs_write( s, 1, pps->b_transform_8x8_mode );
429 bs_write( s, 1, (pps->i_cqm_preset != X264_CQM_FLAT) );
430 if( pps->i_cqm_preset != X264_CQM_FLAT )
432 scaling_list_write( s, pps, CQM_4IY );
433 scaling_list_write( s, pps, CQM_4IC );
434 bs_write( s, 1, 0 ); // Cr = Cb
435 scaling_list_write( s, pps, CQM_4PY );
436 scaling_list_write( s, pps, CQM_4PC );
437 bs_write( s, 1, 0 ); // Cr = Cb
438 if( pps->b_transform_8x8_mode )
440 scaling_list_write( s, pps, CQM_8IY+4 );
441 scaling_list_write( s, pps, CQM_8PY+4 );
444 bs_write_se( s, pps->i_chroma_qp_index_offset );
447 bs_rbsp_trailing( s );
450 void x264_sei_version_write( bs_t *s )
453 // random ID number generated according to ISO-11578
454 const uint8_t uuid[16] = {
455 0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
456 0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
460 sprintf( version, "x264 - core %d%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html",
461 X264_BUILD, X264_VERSION );
462 length = strlen(version)+1+16;
464 bs_write( s, 8, 0x5 ); // payload_type = user_data_unregistered
465 while( length > 255 )
466 bs_write( s, 8, 255 ), length -= 255;
467 bs_write( s, 8, length ); // payload_size
469 for( i = 0; i < 16; i++ )
470 bs_write( s, 8, uuid[i] );
471 for( i = 0; i < length-16; i++ )
472 bs_write( s, 8, version[i] );
474 bs_rbsp_trailing( s );