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h264 packetizer: fill profile/level
[vlc/solaris.git] / modules / packetizer / h264.c
blobd3f9d33a4359b14397c87cd5b12c9801a011d5ac
1 /*****************************************************************************
2 * h264.c: h264/avc video packetizer
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2006 the VideoLAN team
5 * $Id$
6 *
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Eric Petit <titer@videolan.org>
9 * Gildas Bazin <gbazin@videolan.org>
10 * Derk-Jan Hartman <hartman at videolan dot org>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
26
27 /*****************************************************************************
28 * Preamble
29 *****************************************************************************/
30
31 #ifdef HAVE_CONFIG_H
32 # include "config.h"
33 #endif
34
35 #include <vlc_common.h>
36 #include <vlc_plugin.h>
37 #include <vlc_sout.h>
38 #include <vlc_codec.h>
39 #include <vlc_block.h>
40
41 #include <vlc_block_helper.h>
42 #include <vlc_bits.h>
43 #include "../codec/cc.h"
44 #include "packetizer_helper.h"
45
46 /*****************************************************************************
47 * Module descriptor
48 *****************************************************************************/
49 static int Open ( vlc_object_t * );
50 static void Close( vlc_object_t * );
51
52 vlc_module_begin ()
53 set_category( CAT_SOUT )
54 set_subcategory( SUBCAT_SOUT_PACKETIZER )
55 set_description( N_("H.264 video packetizer") )
56 set_capability( "packetizer", 50 )
57 set_callbacks( Open, Close )
58 vlc_module_end ()
59
60
61 /****************************************************************************
62 * Local prototypes
63 ****************************************************************************/
64 typedef struct
65 {
66 int i_nal_type;
67 int i_nal_ref_idc;
68
69 int i_frame_type;
70 int i_pic_parameter_set_id;
71 int i_frame_num;
72
73 int i_field_pic_flag;
74 int i_bottom_field_flag;
75
76 int i_idr_pic_id;
77
78 int i_pic_order_cnt_lsb;
79 int i_delta_pic_order_cnt_bottom;
80
81 int i_delta_pic_order_cnt0;
82 int i_delta_pic_order_cnt1;
83 } slice_t;
84
85 #define SPS_MAX (32)
86 #define PPS_MAX (256)
87 struct decoder_sys_t
88 {
89 /* */
90 packetizer_t packetizer;
91
92 /* */
93 bool b_slice;
94 block_t *p_frame;
95
96 bool b_header;
97 bool b_sps;
98 bool b_pps;
99 block_t *pp_sps[SPS_MAX];
100 block_t *pp_pps[PPS_MAX];
101
102 /* avcC data */
103 int i_avcC_length_size;
104
105 /* Useful values of the Sequence Parameter Set */
106 int i_log2_max_frame_num;
107 int b_frame_mbs_only;
108 int i_pic_order_cnt_type;
109 int i_delta_pic_order_always_zero_flag;
110 int i_log2_max_pic_order_cnt_lsb;
111
112 /* Value from Picture Parameter Set */
113 int i_pic_order_present_flag;
114
115 /* Useful values of the Slice Header */
116 slice_t slice;
117
118 /* */
119 mtime_t i_frame_pts;
120 mtime_t i_frame_dts;
121
122 /* */
123 uint32_t i_cc_flags;
124 mtime_t i_cc_pts;
125 mtime_t i_cc_dts;
126 cc_data_t cc;
127
128 cc_data_t cc_next;
129 };
130
131 enum nal_unit_type_e
132 {
133 NAL_UNKNOWN = 0,
134 NAL_SLICE = 1,
135 NAL_SLICE_DPA = 2,
136 NAL_SLICE_DPB = 3,
137 NAL_SLICE_DPC = 4,
138 NAL_SLICE_IDR = 5, /* ref_idc != 0 */
139 NAL_SEI = 6, /* ref_idc == 0 */
140 NAL_SPS = 7,
141 NAL_PPS = 8,
142 NAL_AU_DELIMITER= 9
143 /* ref_idc == 0 for 6,9,10,11,12 */
144 };
145
146 enum nal_priority_e
147 {
148 NAL_PRIORITY_DISPOSABLE = 0,
149 NAL_PRIORITY_LOW = 1,
150 NAL_PRIORITY_HIGH = 2,
151 NAL_PRIORITY_HIGHEST = 3,
152 };
153
154 static block_t *Packetize( decoder_t *, block_t ** );
155 static block_t *PacketizeAVC1( decoder_t *, block_t ** );
156 static block_t *GetCc( decoder_t *p_dec, bool pb_present[4] );
157
158 static void PacketizeReset( void *p_private, bool b_broken );
159 static block_t *PacketizeParse( void *p_private, bool *pb_ts_used, block_t * );
160 static int PacketizeValidate( void *p_private, block_t * );
161
162 static block_t *ParseNALBlock( decoder_t *, bool *pb_used_ts, block_t * );
163 static block_t *CreateAnnexbNAL( decoder_t *, const uint8_t *p, int );
164
165 static block_t *OutputPicture( decoder_t *p_dec );
166 static void PutSPS( decoder_t *p_dec, block_t *p_frag );
167 static void PutPPS( decoder_t *p_dec, block_t *p_frag );
168 static void ParseSlice( decoder_t *p_dec, bool *pb_new_picture, slice_t *p_slice,
169 int i_nal_ref_idc, int i_nal_type, const block_t *p_frag );
170 static void ParseSei( decoder_t *, block_t * );
171
172
173 static const uint8_t p_h264_startcode[3] = { 0x00, 0x00, 0x01 };
174
175 /*****************************************************************************
176 * Open: probe the packetizer and return score
177 * When opening after demux, the packetizer is only loaded AFTER the decoder
178 * That means that what you set in fmt_out is ignored by the decoder in this special case
179 *****************************************************************************/
180 static int Open( vlc_object_t *p_this )
181 {
182 decoder_t *p_dec = (decoder_t*)p_this;
183 decoder_sys_t *p_sys;
184 int i;
185
186 if( p_dec->fmt_in.i_codec != VLC_CODEC_H264 )
187 return VLC_EGENERIC;
188 if( p_dec->fmt_in.i_original_fourcc == VLC_FOURCC( 'a', 'v', 'c', '1') &&
189 p_dec->fmt_in.i_extra < 7 )
190 return VLC_EGENERIC;
191
192 /* Allocate the memory needed to store the decoder's structure */
193 if( ( p_dec->p_sys = p_sys = malloc( sizeof(decoder_sys_t) ) ) == NULL )
194 {
195 return VLC_ENOMEM;
196 }
197
198 packetizer_Init( &p_sys->packetizer,
199 p_h264_startcode, sizeof(p_h264_startcode),
200 p_h264_startcode, 1,
201 PacketizeReset, PacketizeParse, PacketizeValidate, p_dec );
202
203 p_sys->b_slice = false;
204 p_sys->p_frame = NULL;
205 p_sys->b_header= false;
206 p_sys->b_sps = false;
207 p_sys->b_pps = false;
208 for( i = 0; i < SPS_MAX; i++ )
209 p_sys->pp_sps[i] = NULL;
210 for( i = 0; i < PPS_MAX; i++ )
211 p_sys->pp_pps[i] = NULL;
212
213 p_sys->slice.i_nal_type = -1;
214 p_sys->slice.i_nal_ref_idc = -1;
215 p_sys->slice.i_idr_pic_id = -1;
216 p_sys->slice.i_frame_num = -1;
217 p_sys->slice.i_frame_type = 0;
218 p_sys->slice.i_pic_parameter_set_id = -1;
219 p_sys->slice.i_field_pic_flag = 0;
220 p_sys->slice.i_bottom_field_flag = -1;
221 p_sys->slice.i_pic_order_cnt_lsb = -1;
222 p_sys->slice.i_delta_pic_order_cnt_bottom = -1;
223
224 p_sys->i_frame_dts = VLC_TS_INVALID;
225 p_sys->i_frame_pts = VLC_TS_INVALID;
226
227 /* Setup properties */
228 es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in );
229 p_dec->fmt_out.i_codec = VLC_CODEC_H264;
230
231 if( p_dec->fmt_in.i_original_fourcc == VLC_FOURCC( 'a', 'v', 'c', '1' ) )
232 {
233 /* This type of stream is produced by mp4 and matroska
234 * when we want to store it in another streamformat, you need to convert
235 * The fmt_in.p_extra should ALWAYS contain the avcC
236 * The fmt_out.p_extra should contain all the SPS and PPS with 4 byte startcodes */
237 uint8_t *p = &((uint8_t*)p_dec->fmt_in.p_extra)[4];
238 int i_sps, i_pps;
239 bool b_dummy;
240 int i;
241
242 /* Parse avcC */
243 p_sys->i_avcC_length_size = 1 + ((*p++)&0x03);
244
245 /* Read SPS */
246 i_sps = (*p++)&0x1f;
247 for( i = 0; i < i_sps; i++ )
248 {
249 uint16_t i_length = GetWBE( p ); p += 2;
250 if( i_length >
251 (uint8_t*)p_dec->fmt_in.p_extra + p_dec->fmt_in.i_extra - p )
252 {
253 return VLC_EGENERIC;
254 }
255 block_t *p_sps = CreateAnnexbNAL( p_dec, p, i_length );
256 if( !p_sps )
257 return VLC_EGENERIC;
258 ParseNALBlock( p_dec, &b_dummy, p_sps );
259 p += i_length;
260 }
261 /* Read PPS */
262 i_pps = *p++;
263 for( i = 0; i < i_pps; i++ )
264 {
265 uint16_t i_length = GetWBE( p ); p += 2;
266 if( i_length >
267 (uint8_t*)p_dec->fmt_in.p_extra + p_dec->fmt_in.i_extra - p )
268 {
269 return VLC_EGENERIC;
270 }
271 block_t *p_pps = CreateAnnexbNAL( p_dec, p, i_length );
272 if( !p_pps )
273 return VLC_EGENERIC;
274 ParseNALBlock( p_dec, &b_dummy, p_pps );
275 p += i_length;
276 }
277 msg_Dbg( p_dec, "avcC length size=%d, sps=%d, pps=%d",
278 p_sys->i_avcC_length_size, i_sps, i_pps );
279
280 if( !p_sys->b_sps || !p_sys->b_pps )
281 return VLC_EGENERIC;
282
283 /* FIXME: FFMPEG isn't happy at all if you leave this */
284 if( p_dec->fmt_out.i_extra > 0 )
285 free( p_dec->fmt_out.p_extra );
286 p_dec->fmt_out.i_extra = 0;
287 p_dec->fmt_out.p_extra = NULL;
288
289 /* Set the new extradata */
290 for( i = 0; i < SPS_MAX; i++ )
291 {
292 if( p_sys->pp_sps[i] )
293 p_dec->fmt_out.i_extra += p_sys->pp_sps[i]->i_buffer;
294 }
295 for( i = 0; i < PPS_MAX; i++ )
296 {
297 if( p_sys->pp_pps[i] )
298 p_dec->fmt_out.i_extra += p_sys->pp_pps[i]->i_buffer;
299 }
300 p_dec->fmt_out.p_extra = malloc( p_dec->fmt_out.i_extra );
301 if( p_dec->fmt_out.p_extra )
302 {
303 uint8_t *p_dst = p_dec->fmt_out.p_extra;
304
305 for( i = 0; i < SPS_MAX; i++ )
306 {
307 if( p_sys->pp_sps[i] )
308 {
309 memcpy( p_dst, p_sys->pp_sps[i]->p_buffer, p_sys->pp_sps[i]->i_buffer );
310 p_dst += p_sys->pp_sps[i]->i_buffer;
311 }
312 }
313 for( i = 0; i < PPS_MAX; i++ )
314 {
315 if( p_sys->pp_pps[i] )
316 {
317 memcpy( p_dst, p_sys->pp_pps[i]->p_buffer, p_sys->pp_pps[i]->i_buffer );
318 p_dst += p_sys->pp_pps[i]->i_buffer;
319 }
320 }
321 p_sys->b_header = true;
322 }
323 else
324 {
325 p_dec->fmt_out.i_extra = 0;
326 }
327
328 /* Set callback */
329 p_dec->pf_packetize = PacketizeAVC1;
330 /* TODO CC ? */
331 }
332 else
333 {
334 /* This type of stream contains data with 3 of 4 byte startcodes
335 * The fmt_in.p_extra MAY contain SPS/PPS with 4 byte startcodes
336 * The fmt_out.p_extra should be the same */
337
338 /* Set callback */
339 p_dec->pf_packetize = Packetize;
340 p_dec->pf_get_cc = GetCc;
341
342 /* */
343 p_sys->i_cc_pts = VLC_TS_INVALID;
344 p_sys->i_cc_dts = VLC_TS_INVALID;
345 p_sys->i_cc_flags = 0;
346 cc_Init( &p_sys->cc );
347 cc_Init( &p_sys->cc_next );
348
349 /* */
350 if( p_dec->fmt_in.i_extra > 0 )
351 packetizer_Header( &p_sys->packetizer,
352 p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
353 }
354
355 return VLC_SUCCESS;
356 }
357
358 /*****************************************************************************
359 * Close: clean up the packetizer
360 *****************************************************************************/
361 static void Close( vlc_object_t *p_this )
362 {
363 decoder_t *p_dec = (decoder_t*)p_this;
364 decoder_sys_t *p_sys = p_dec->p_sys;
365 int i;
366
367 if( p_sys->p_frame )
368 block_ChainRelease( p_sys->p_frame );
369 for( i = 0; i < SPS_MAX; i++ )
370 {
371 if( p_sys->pp_sps[i] )
372 block_Release( p_sys->pp_sps[i] );
373 }
374 for( i = 0; i < PPS_MAX; i++ )
375 {
376 if( p_sys->pp_pps[i] )
377 block_Release( p_sys->pp_pps[i] );
378 }
379 packetizer_Clean( &p_sys->packetizer );
380
381 if( p_dec->pf_get_cc )
382 {
383 cc_Exit( &p_sys->cc_next );
384 cc_Exit( &p_sys->cc );
385 }
386
387 free( p_sys );
388 }
389
390 /****************************************************************************
391 * Packetize: the whole thing
392 * Search for the startcodes 3 or more bytes
393 * Feed ParseNALBlock ALWAYS with 4 byte startcode prepended NALs
394 ****************************************************************************/
395 static block_t *Packetize( decoder_t *p_dec, block_t **pp_block )
396 {
397 decoder_sys_t *p_sys = p_dec->p_sys;
398
399 return packetizer_Packetize( &p_sys->packetizer, pp_block );
400 }
401
402 /****************************************************************************
403 * PacketizeAVC1: Takes VCL blocks of data and creates annexe B type NAL stream
404 * Will always use 4 byte 0 0 0 1 startcodes
405 * Will prepend a SPS and PPS before each keyframe
406 ****************************************************************************/
407 static block_t *PacketizeAVC1( decoder_t *p_dec, block_t **pp_block )
408 {
409 decoder_sys_t *p_sys = p_dec->p_sys;
410 block_t *p_block;
411 block_t *p_ret = NULL;
412 uint8_t *p;
413
414 if( !pp_block || !*pp_block )
415 return NULL;
416 if( (*pp_block)->i_flags&(BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
417 {
418 block_Release( *pp_block );
419 return NULL;
420 }
421
422 p_block = *pp_block;
423 *pp_block = NULL;
424
425 for( p = p_block->p_buffer; p < &p_block->p_buffer[p_block->i_buffer]; )
426 {
427 block_t *p_pic;
428 bool b_dummy;
429 int i_size = 0;
430 int i;
431
432 for( i = 0; i < p_sys->i_avcC_length_size; i++ )
433 {
434 i_size = (i_size << 8) | (*p++);
435 }
436
437 if( i_size <= 0 ||
438 i_size > ( p_block->p_buffer + p_block->i_buffer - p ) )
439 {
440 msg_Err( p_dec, "Broken frame : size %d is too big", i_size );
441 break;
442 }
443
444 block_t *p_part = CreateAnnexbNAL( p_dec, p, i_size );
445 if( !p_part )
446 break;
447
448 p_part->i_dts = p_block->i_dts;
449 p_part->i_pts = p_block->i_pts;
450
451 /* Parse the NAL */
452 if( ( p_pic = ParseNALBlock( p_dec, &b_dummy, p_part ) ) )
453 {
454 block_ChainAppend( &p_ret, p_pic );
455 }
456 p += i_size;
457 }
458 block_Release( p_block );
459
460 return p_ret;
461 }
462
463 /*****************************************************************************
464 * GetCc:
465 *****************************************************************************/
466 static block_t *GetCc( decoder_t *p_dec, bool pb_present[4] )
467 {
468 decoder_sys_t *p_sys = p_dec->p_sys;
469 block_t *p_cc;
470
471 for( int i = 0; i < 4; i++ )
472 pb_present[i] = p_sys->cc.pb_present[i];
473
474 if( p_sys->cc.i_data <= 0 )
475 return NULL;
476
477 p_cc = block_New( p_dec, p_sys->cc.i_data);
478 if( p_cc )
479 {
480 memcpy( p_cc->p_buffer, p_sys->cc.p_data, p_sys->cc.i_data );
481 p_cc->i_dts =
482 p_cc->i_pts = p_sys->cc.b_reorder ? p_sys->i_cc_pts : p_sys->i_cc_dts;
483 p_cc->i_flags = ( p_sys->cc.b_reorder ? p_sys->i_cc_flags : BLOCK_FLAG_TYPE_P ) & BLOCK_FLAG_TYPE_MASK;
484 }
485 cc_Flush( &p_sys->cc );
486 return p_cc;
487 }
488
489 /****************************************************************************
490 * Helpers
491 ****************************************************************************/
492 static void PacketizeReset( void *p_private, bool b_broken )
493 {
494 decoder_t *p_dec = p_private;
495 decoder_sys_t *p_sys = p_dec->p_sys;
496
497 if( b_broken )
498 {
499 if( p_sys->p_frame )
500 block_ChainRelease( p_sys->p_frame );
501 p_sys->p_frame = NULL;
502 p_sys->slice.i_frame_type = 0;
503 p_sys->b_slice = false;
504 }
505 p_sys->i_frame_pts = VLC_TS_INVALID;
506 p_sys->i_frame_dts = VLC_TS_INVALID;
507 }
508 static block_t *PacketizeParse( void *p_private, bool *pb_ts_used, block_t *p_block )
509 {
510 decoder_t *p_dec = p_private;
511
512 /* Remove trailing 0 bytes */
513 while( p_block->i_buffer && p_block->p_buffer[p_block->i_buffer-1] == 0x00 )
514 p_block->i_buffer--;
515
516 return ParseNALBlock( p_dec, pb_ts_used, p_block );
517 }
518 static int PacketizeValidate( void *p_private, block_t *p_au )
519 {
520 VLC_UNUSED(p_private);
521 VLC_UNUSED(p_au);
522 return VLC_SUCCESS;
523 }
524
525 static block_t *CreateAnnexbNAL( decoder_t *p_dec, const uint8_t *p, int i_size )
526 {
527 block_t *p_nal;
528
529 p_nal = block_New( p_dec, 4 + i_size );
530 if( !p_nal ) return NULL;
531
532 /* Add start code */
533 p_nal->p_buffer[0] = 0x00;
534 p_nal->p_buffer[1] = 0x00;
535 p_nal->p_buffer[2] = 0x00;
536 p_nal->p_buffer[3] = 0x01;
537
538 /* Copy nalu */
539 memcpy( &p_nal->p_buffer[4], p, i_size );
540
541 VLC_UNUSED(p_dec);
542 return p_nal;
543 }
544
545 static void CreateDecodedNAL( uint8_t **pp_ret, int *pi_ret,
546 const uint8_t *src, int i_src )
547 {
548 const uint8_t *end = &src[i_src];
549 uint8_t *dst = malloc( i_src );
550
551 *pp_ret = dst;
552
553 if( dst )
554 {
555 while( src < end )
556 {
557 if( src < end - 3 && src[0] == 0x00 && src[1] == 0x00 &&
558 src[2] == 0x03 )
559 {
560 *dst++ = 0x00;
561 *dst++ = 0x00;
562
563 src += 3;
564 continue;
565 }
566 *dst++ = *src++;
567 }
568 }
569 *pi_ret = dst - *pp_ret;
570 }
571
572 static inline int bs_read_ue( bs_t *s )
573 {
574 int i = 0;
575
576 while( bs_read1( s ) == 0 && s->p < s->p_end && i < 32 )
577 {
578 i++;
579 }
580 return( ( 1 << i) - 1 + bs_read( s, i ) );
581 }
582
583 static inline int bs_read_se( bs_t *s )
584 {
585 int val = bs_read_ue( s );
586
587 return val&0x01 ? (val+1)/2 : -(val/2);
588 }
589
590 /*****************************************************************************
591 * ParseNALBlock: parses annexB type NALs
592 * All p_frag blocks are required to start with 0 0 0 1 4-byte startcode
593 *****************************************************************************/
594 static block_t *ParseNALBlock( decoder_t *p_dec, bool *pb_used_ts, block_t *p_frag )
595 {
596 decoder_sys_t *p_sys = p_dec->p_sys;
597 block_t *p_pic = NULL;
598
599 const int i_nal_ref_idc = (p_frag->p_buffer[4] >> 5)&0x03;
600 const int i_nal_type = p_frag->p_buffer[4]&0x1f;
601 const mtime_t i_frag_dts = p_frag->i_dts;
602 const mtime_t i_frag_pts = p_frag->i_pts;
603
604 if( p_sys->b_slice && ( !p_sys->b_sps || !p_sys->b_pps ) )
605 {
606 block_ChainRelease( p_sys->p_frame );
607 msg_Warn( p_dec, "waiting for SPS/PPS" );
608
609 /* Reset context */
610 p_sys->slice.i_frame_type = 0;
611 p_sys->p_frame = NULL;
612 p_sys->b_slice = false;
613 cc_Flush( &p_sys->cc_next );
614 }
615
616 if( ( !p_sys->b_sps || !p_sys->b_pps ) &&
617 i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
618 {
619 p_sys->b_slice = true;
620 /* Fragment will be discarded later on */
621 }
622 else if( i_nal_type >= NAL_SLICE && i_nal_type <= NAL_SLICE_IDR )
623 {
624 slice_t slice;
625 bool b_new_picture;
626
627 ParseSlice( p_dec, &b_new_picture, &slice, i_nal_ref_idc, i_nal_type, p_frag );
628
629 /* */
630 if( b_new_picture && p_sys->b_slice )
631 p_pic = OutputPicture( p_dec );
632
633 /* */
634 p_sys->slice = slice;
635 p_sys->b_slice = true;
636 }
637 else if( i_nal_type == NAL_SPS )
638 {
639 if( p_sys->b_slice )
640 p_pic = OutputPicture( p_dec );
641
642 PutSPS( p_dec, p_frag );
643
644 /* Do not append the SPS because we will insert it on keyframes */
645 p_frag = NULL;
646 }
647 else if( i_nal_type == NAL_PPS )
648 {
649 if( p_sys->b_slice )
650 p_pic = OutputPicture( p_dec );
651
652 PutPPS( p_dec, p_frag );
653
654 /* Do not append the PPS because we will insert it on keyframes */
655 p_frag = NULL;
656 }
657 else if( i_nal_type == NAL_AU_DELIMITER ||
658 i_nal_type == NAL_SEI ||
659 ( i_nal_type >= 13 && i_nal_type <= 18 ) )
660 {
661 if( p_sys->b_slice )
662 p_pic = OutputPicture( p_dec );
663
664 /* Parse SEI for CC support */
665 if( i_nal_type == NAL_SEI )
666 ParseSei( p_dec, p_frag );
667 }
668
669 /* Append the block */
670 if( p_frag )
671 block_ChainAppend( &p_sys->p_frame, p_frag );
672
673 *pb_used_ts = false;
674 if( p_sys->i_frame_dts <= VLC_TS_INVALID &&
675 p_sys->i_frame_pts <= VLC_TS_INVALID )
676 {
677 p_sys->i_frame_dts = i_frag_dts;
678 p_sys->i_frame_pts = i_frag_pts;
679 *pb_used_ts = true;
680 }
681 return p_pic;
682 }
683
684 static block_t *OutputPicture( decoder_t *p_dec )
685 {
686 decoder_sys_t *p_sys = p_dec->p_sys;
687 block_t *p_pic;
688
689 if( !p_sys->b_header && p_sys->slice.i_frame_type != BLOCK_FLAG_TYPE_I)
690 return NULL;
691
692 if( p_sys->slice.i_frame_type == BLOCK_FLAG_TYPE_I && p_sys->b_sps && p_sys->b_pps )
693 {
694 block_t *p_list = NULL;
695 int i;
696
697 for( i = 0; i < SPS_MAX; i++ )
698 {
699 if( p_sys->pp_sps[i] )
700 block_ChainAppend( &p_list, block_Duplicate( p_sys->pp_sps[i] ) );
701 }
702 for( i = 0; i < PPS_MAX; i++ )
703 {
704 if( p_sys->pp_pps[i] )
705 block_ChainAppend( &p_list, block_Duplicate( p_sys->pp_pps[i] ) );
706 }
707 if( p_list )
708 p_sys->b_header = true;
709
710 block_ChainAppend( &p_list, p_sys->p_frame );
711 p_pic = block_ChainGather( p_list );
712 }
713 else
714 {
715 p_pic = block_ChainGather( p_sys->p_frame );
716 }
717 p_pic->i_dts = p_sys->i_frame_dts;
718 p_pic->i_pts = p_sys->i_frame_pts;
719 p_pic->i_length = 0; /* FIXME */
720 p_pic->i_flags |= p_sys->slice.i_frame_type;
721
722 p_sys->slice.i_frame_type = 0;
723 p_sys->p_frame = NULL;
724 p_sys->i_frame_dts = VLC_TS_INVALID;
725 p_sys->i_frame_pts = VLC_TS_INVALID;
726 p_sys->b_slice = false;
727
728 /* CC */
729 p_sys->i_cc_pts = p_pic->i_pts;
730 p_sys->i_cc_dts = p_pic->i_dts;
731 p_sys->i_cc_flags = p_pic->i_flags;
732
733 /* Swap cc buffer */
734 cc_data_t cc_tmp = p_sys->cc;
735 p_sys->cc = p_sys->cc_next;
736 p_sys->cc_next = cc_tmp;
737
738 cc_Flush( &p_sys->cc_next );
739
740 return p_pic;
741 }
742
743 static void PutSPS( decoder_t *p_dec, block_t *p_frag )
744 {
745 decoder_sys_t *p_sys = p_dec->p_sys;
746
747 uint8_t *pb_dec = NULL;
748 int i_dec = 0;
749 bs_t s;
750 int i_tmp;
751 int i_sps_id;
752
753 CreateDecodedNAL( &pb_dec, &i_dec, &p_frag->p_buffer[5],
754 p_frag->i_buffer - 5 );
755
756 bs_init( &s, pb_dec, i_dec );
757 int i_profile_idc = bs_read( &s, 8 );
758 p_dec->fmt_out.i_profile = i_profile_idc;
759 /* Skip constraint_set0123, reserved(4) */
760 bs_skip( &s, 1+1+1+1 + 4 );
761 p_dec->fmt_out.i_level = bs_read( &s, 8 );
762 /* sps id */
763 i_sps_id = bs_read_ue( &s );
764 if( i_sps_id >= SPS_MAX )
765 {
766 msg_Warn( p_dec, "invalid SPS (sps_id=%d)", i_sps_id );
767 free( pb_dec );
768 block_Release( p_frag );
769 return;
770 }
771
772 if( i_profile_idc == 100 || i_profile_idc == 110 ||
773 i_profile_idc == 122 || i_profile_idc == 244 ||
774 i_profile_idc == 44 || i_profile_idc == 83 ||
775 i_profile_idc == 86 )
776 {
777 /* chroma_format_idc */
778 const int i_chroma_format_idc = bs_read_ue( &s );
779 if( i_chroma_format_idc == 3 )
780 bs_skip( &s, 1 ); /* seperate_colour_plane_flag */
781 /* bit_depth_luma_minus8 */
782 bs_read_ue( &s );
783 /* bit_depth_chroma_minus8 */
784 bs_read_ue( &s );
785 /* qpprime_y_zero_transform_bypass_flag */
786 bs_skip( &s, 1 );
787 /* seq_scaling_matrix_present_flag */
788 i_tmp = bs_read( &s, 1 );
789 if( i_tmp )
790 {
791 for( int i = 0; i < ((3 != i_chroma_format_idc) ? 8 : 12); i++ )
792 {
793 /* seq_scaling_list_present_flag[i] */
794 i_tmp = bs_read( &s, 1 );
795 if( !i_tmp )
796 continue;
797 const int i_size_of_scaling_list = (i < 6 ) ? 16 : 64;
798 /* scaling_list (...) */
799 int i_lastscale = 8;
800 int i_nextscale = 8;
801 for( int j = 0; j < i_size_of_scaling_list; j++ )
802 {
803 if( i_nextscale != 0 )
804 {
805 /* delta_scale */
806 i_tmp = bs_read( &s, 1 );
807 i_nextscale = ( i_lastscale + i_tmp + 256 ) % 256;
808 /* useDefaultScalingMatrixFlag = ... */
809 }
810 /* scalinglist[j] */
811 i_lastscale = ( i_nextscale == 0 ) ? i_lastscale : i_nextscale;
812 }
813 }
814 }
815 }
816
817 /* Skip i_log2_max_frame_num */
818 p_sys->i_log2_max_frame_num = bs_read_ue( &s );
819 if( p_sys->i_log2_max_frame_num > 12)
820 p_sys->i_log2_max_frame_num = 12;
821 /* Read poc_type */
822 p_sys->i_pic_order_cnt_type = bs_read_ue( &s );
823 if( p_sys->i_pic_order_cnt_type == 0 )
824 {
825 /* skip i_log2_max_poc_lsb */
826 p_sys->i_log2_max_pic_order_cnt_lsb = bs_read_ue( &s );
827 if( p_sys->i_log2_max_pic_order_cnt_lsb > 12 )
828 p_sys->i_log2_max_pic_order_cnt_lsb = 12;
829 }
830 else if( p_sys->i_pic_order_cnt_type == 1 )
831 {
832 int i_cycle;
833 /* skip b_delta_pic_order_always_zero */
834 p_sys->i_delta_pic_order_always_zero_flag = bs_read( &s, 1 );
835 /* skip i_offset_for_non_ref_pic */
836 bs_read_se( &s );
837 /* skip i_offset_for_top_to_bottom_field */
838 bs_read_se( &s );
839 /* read i_num_ref_frames_in_poc_cycle */
840 i_cycle = bs_read_ue( &s );
841 if( i_cycle > 256 ) i_cycle = 256;
842 while( i_cycle > 0 )
843 {
844 /* skip i_offset_for_ref_frame */
845 bs_read_se(&s );
846 i_cycle--;
847 }
848 }
849 /* i_num_ref_frames */
850 bs_read_ue( &s );
851 /* b_gaps_in_frame_num_value_allowed */
852 bs_skip( &s, 1 );
853
854 /* Read size */
855 p_dec->fmt_out.video.i_width = 16 * ( bs_read_ue( &s ) + 1 );
856 p_dec->fmt_out.video.i_height = 16 * ( bs_read_ue( &s ) + 1 );
857
858 /* b_frame_mbs_only */
859 p_sys->b_frame_mbs_only = bs_read( &s, 1 );
860 if( p_sys->b_frame_mbs_only == 0 )
861 {
862 bs_skip( &s, 1 );
863 }
864 /* b_direct8x8_inference */
865 bs_skip( &s, 1 );
866
867 /* crop */
868 i_tmp = bs_read( &s, 1 );
869 if( i_tmp )
870 {
871 /* left */
872 bs_read_ue( &s );
873 /* right */
874 bs_read_ue( &s );
875 /* top */
876 bs_read_ue( &s );
877 /* bottom */
878 bs_read_ue( &s );
879 }
880
881 /* vui */
882 i_tmp = bs_read( &s, 1 );
883 if( i_tmp )
884 {
885 /* read the aspect ratio part if any */
886 i_tmp = bs_read( &s, 1 );
887 if( i_tmp )
888 {
889 static const struct { int w, h; } sar[17] =
890 {
891 { 0, 0 }, { 1, 1 }, { 12, 11 }, { 10, 11 },
892 { 16, 11 }, { 40, 33 }, { 24, 11 }, { 20, 11 },
893 { 32, 11 }, { 80, 33 }, { 18, 11 }, { 15, 11 },
894 { 64, 33 }, { 160,99 }, { 4, 3 }, { 3, 2 },
895 { 2, 1 },
896 };
897 int i_sar = bs_read( &s, 8 );
898 int w, h;
899
900 if( i_sar < 17 )
901 {
902 w = sar[i_sar].w;
903 h = sar[i_sar].h;
904 }
905 else if( i_sar == 255 )
906 {
907 w = bs_read( &s, 16 );
908 h = bs_read( &s, 16 );
909 }
910 else
911 {
912 w = 0;
913 h = 0;
914 }
915
916 if( w != 0 && h != 0 )
917 {
918 p_dec->fmt_out.video.i_sar_num = w;
919 p_dec->fmt_out.video.i_sar_den = h;
920 }
921 else
922 {
923 p_dec->fmt_out.video.i_sar_num = 1;
924 p_dec->fmt_out.video.i_sar_den = 1;
925 }
926 }
927 }
928
929 free( pb_dec );
930
931 /* We have a new SPS */
932 if( !p_sys->b_sps )
933 msg_Dbg( p_dec, "found NAL_SPS (sps_id=%d)", i_sps_id );
934 p_sys->b_sps = true;
935
936 if( p_sys->pp_sps[i_sps_id] )
937 block_Release( p_sys->pp_sps[i_sps_id] );
938 p_sys->pp_sps[i_sps_id] = p_frag;
939 }
940
941 static void PutPPS( decoder_t *p_dec, block_t *p_frag )
942 {
943 decoder_sys_t *p_sys = p_dec->p_sys;
944 bs_t s;
945 int i_pps_id;
946 int i_sps_id;
947
948 bs_init( &s, &p_frag->p_buffer[5], p_frag->i_buffer - 5 );
949 i_pps_id = bs_read_ue( &s ); // pps id
950 i_sps_id = bs_read_ue( &s ); // sps id
951 if( i_pps_id >= PPS_MAX || i_sps_id >= SPS_MAX )
952 {
953 msg_Warn( p_dec, "invalid PPS (pps_id=%d sps_id=%d)", i_pps_id, i_sps_id );
954 block_Release( p_frag );
955 return;
956 }
957 bs_skip( &s, 1 ); // entropy coding mode flag
958 p_sys->i_pic_order_present_flag = bs_read( &s, 1 );
959 /* TODO */
960
961 /* We have a new PPS */
962 if( !p_sys->b_pps )
963 msg_Dbg( p_dec, "found NAL_PPS (pps_id=%d sps_id=%d)", i_pps_id, i_sps_id );
964 p_sys->b_pps = true;
965
966 if( p_sys->pp_pps[i_pps_id] )
967 block_Release( p_sys->pp_pps[i_pps_id] );
968 p_sys->pp_pps[i_pps_id] = p_frag;
969 }
970
971 static void ParseSlice( decoder_t *p_dec, bool *pb_new_picture, slice_t *p_slice,
972 int i_nal_ref_idc, int i_nal_type, const block_t *p_frag )
973 {
974 decoder_sys_t *p_sys = p_dec->p_sys;
975 uint8_t *pb_dec;
976 int i_dec;
977 int i_first_mb, i_slice_type;
978 slice_t slice;
979 bs_t s;
980
981 /* do not convert the whole frame */
982 CreateDecodedNAL( &pb_dec, &i_dec, &p_frag->p_buffer[5],
983 __MIN( p_frag->i_buffer - 5, 60 ) );
984 bs_init( &s, pb_dec, i_dec );
985
986 /* first_mb_in_slice */
987 i_first_mb = bs_read_ue( &s );
988
989 /* slice_type */
990 switch( (i_slice_type = bs_read_ue( &s )) )
991 {
992 case 0: case 5:
993 slice.i_frame_type = BLOCK_FLAG_TYPE_P;
994 break;
995 case 1: case 6:
996 slice.i_frame_type = BLOCK_FLAG_TYPE_B;
997 break;
998 case 2: case 7:
999 slice.i_frame_type = BLOCK_FLAG_TYPE_I;
1000 break;
1001 case 3: case 8: /* SP */
1002 slice.i_frame_type = BLOCK_FLAG_TYPE_P;
1003 break;
1004 case 4: case 9:
1005 slice.i_frame_type = BLOCK_FLAG_TYPE_I;
1006 break;
1007 default:
1008 slice.i_frame_type = 0;
1009 break;
1010 }
1011
1012 /* */
1013 slice.i_nal_type = i_nal_type;
1014 slice.i_nal_ref_idc = i_nal_ref_idc;
1015
1016 slice.i_pic_parameter_set_id = bs_read_ue( &s );
1017 slice.i_frame_num = bs_read( &s, p_sys->i_log2_max_frame_num + 4 );
1018
1019 slice.i_field_pic_flag = 0;
1020 slice.i_bottom_field_flag = -1;
1021 if( !p_sys->b_frame_mbs_only )
1022 {
1023 /* field_pic_flag */
1024 slice.i_field_pic_flag = bs_read( &s, 1 );
1025 if( slice.i_field_pic_flag )
1026 slice.i_bottom_field_flag = bs_read( &s, 1 );
1027 }
1028
1029 slice.i_idr_pic_id = p_sys->slice.i_idr_pic_id;
1030 if( slice.i_nal_type == NAL_SLICE_IDR )
1031 slice.i_idr_pic_id = bs_read_ue( &s );
1032
1033 slice.i_pic_order_cnt_lsb = -1;
1034 slice.i_delta_pic_order_cnt_bottom = -1;
1035 slice.i_delta_pic_order_cnt0 = 0;
1036 slice.i_delta_pic_order_cnt1 = 0;
1037 if( p_sys->i_pic_order_cnt_type == 0 )
1038 {
1039 slice.i_pic_order_cnt_lsb = bs_read( &s, p_sys->i_log2_max_pic_order_cnt_lsb + 4 );
1040 if( p_sys->i_pic_order_present_flag && !slice.i_field_pic_flag )
1041 slice.i_delta_pic_order_cnt_bottom = bs_read_se( &s );
1042 }
1043 else if( (p_sys->i_pic_order_cnt_type == 1) &&
1044 (!p_sys->i_delta_pic_order_always_zero_flag) )
1045 {
1046 slice.i_delta_pic_order_cnt0 = bs_read_se( &s );
1047 if( p_sys->i_pic_order_present_flag && !slice.i_field_pic_flag )
1048 slice.i_delta_pic_order_cnt1 = bs_read_se( &s );
1049 }
1050 free( pb_dec );
1051
1052 /* Detection of the first VCL NAL unit of a primary coded picture
1053 * (cf. 7.4.1.2.4) */
1054 bool b_pic = false;
1055 if( slice.i_frame_num != p_sys->slice.i_frame_num ||
1056 slice.i_pic_parameter_set_id != p_sys->slice.i_pic_parameter_set_id ||
1057 slice.i_field_pic_flag != p_sys->slice.i_field_pic_flag ||
1058 slice.i_nal_ref_idc != p_sys->slice.i_nal_ref_idc )
1059 b_pic = true;
1060 if( (slice.i_bottom_field_flag != -1) &&
1061 (p_sys->slice.i_bottom_field_flag != -1) &&
1062 (slice.i_bottom_field_flag != p_sys->slice.i_bottom_field_flag) )
1063 b_pic = true;
1064 if( p_sys->i_pic_order_cnt_type == 0 &&
1065 ( slice.i_pic_order_cnt_lsb != p_sys->slice.i_pic_order_cnt_lsb ||
1066 slice.i_delta_pic_order_cnt_bottom != p_sys->slice.i_delta_pic_order_cnt_bottom ) )
1067 b_pic = true;
1068 else if( p_sys->i_pic_order_cnt_type == 1 &&
1069 ( slice.i_delta_pic_order_cnt0 != p_sys->slice.i_delta_pic_order_cnt0 ||
1070 slice.i_delta_pic_order_cnt1 != p_sys->slice.i_delta_pic_order_cnt1 ) )
1071 b_pic = true;
1072 if( ( slice.i_nal_type == NAL_SLICE_IDR || p_sys->slice.i_nal_type == NAL_SLICE_IDR ) &&
1073 ( slice.i_nal_type != p_sys->slice.i_nal_type || slice.i_idr_pic_id != p_sys->slice.i_idr_pic_id ) )
1074 b_pic = true;
1075
1076 /* */
1077 *pb_new_picture = b_pic;
1078 *p_slice = slice;
1079 }
1080
1081 static void ParseSei( decoder_t *p_dec, block_t *p_frag )
1082 {
1083 decoder_sys_t *p_sys = p_dec->p_sys;
1084 uint8_t *pb_dec;
1085 int i_dec;
1086
1087 /* */
1088 CreateDecodedNAL( &pb_dec, &i_dec, &p_frag->p_buffer[5], p_frag->i_buffer - 5 );
1089 if( !pb_dec )
1090 return;
1091
1092 /* The +1 is for rbsp trailing bits */
1093 for( int i_used = 0; i_used+1 < i_dec; )
1094 {
1095 /* Read type */
1096 int i_type = 0;
1097 while( i_used+1 < i_dec )
1098 {
1099 const int i_byte = pb_dec[i_used++];
1100 i_type += i_byte;
1101 if( i_byte != 0xff )
1102 break;
1103 }
1104 /* Read size */
1105 int i_size = 0;
1106 while( i_used+1 < i_dec )
1107 {
1108 const int i_byte = pb_dec[i_used++];
1109 i_size += i_byte;
1110 if( i_byte != 0xff )
1111 break;
1112 }
1113 /* Check room */
1114 if( i_used + i_size + 1 > i_dec )
1115 break;
1116
1117 /* Look for user_data_registered_itu_t_t35 */
1118 if( i_type == 4 )
1119 {
1120 static const uint8_t p_dvb1_data_start_code[] = {
1121 0xb5,
1122 0x00, 0x31,
1123 0x47, 0x41, 0x39, 0x34
1124 };
1125 const int i_t35 = i_size;
1126 const uint8_t *p_t35 = &pb_dec[i_used];
1127
1128 /* Check for we have DVB1_data() */
1129 if( i_t35 >= 5 &&
1130 !memcmp( p_t35, p_dvb1_data_start_code, sizeof(p_dvb1_data_start_code) ) )
1131 {
1132 cc_Extract( &p_sys->cc_next, &p_t35[3], i_t35 - 3 );
1133 }
1134 }
1135 i_used += i_size;
1136 }
1137
1138 free( pb_dec );
1139 }
1140
VLC Solaris and OpenSolaris fixes