1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2001, 2002, 2003, 2006 VLC authors and VideoLAN
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin at videolan dot org>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
36 #include <vlc_block.h>
42 #include <vlc_iso_lang.h>
45 #include "../demux/mpeg/mpeg_parser_helpers.h"
46 #include "../demux/mp4/libmp4.h"
49 /*****************************************************************************
51 *****************************************************************************/
52 #define FASTSTART_TEXT N_("Create \"Fast Start\" files")
53 #define FASTSTART_LONGTEXT N_(\
54 "Create \"Fast Start\" files. " \
55 "\"Fast Start\" files are optimized for downloads and allow the user " \
56 "to start previewing the file while it is downloading.")
58 static int Open (vlc_object_t *);
59 static void Close (vlc_object_t *);
60 static int OpenFrag (vlc_object_t *);
61 static void CloseFrag (vlc_object_t *);
63 #define SOUT_CFG_PREFIX "sout-mp4-"
66 set_description(N_("MP4/MOV muxer"))
67 set_category(CAT_SOUT)
68 set_subcategory(SUBCAT_SOUT_MUX)
71 add_bool(SOUT_CFG_PREFIX "faststart", true,
72 FASTSTART_TEXT, FASTSTART_LONGTEXT,
74 set_capability("sout mux", 5)
75 add_shortcut("mp4", "mov", "3gp")
76 set_callbacks(Open, Close)
79 set_description(N_("Fragmented and streamable MP4 muxer"))
80 set_category(CAT_SOUT)
81 set_subcategory(SUBCAT_SOUT_MUX)
82 set_shortname("MP4 Frag")
83 add_shortcut("mp4frag", "mp4stream")
84 set_capability("sout mux", 0)
85 set_callbacks(OpenFrag, CloseFrag)
89 /*****************************************************************************
91 *****************************************************************************/
92 static const char *const ppsz_sout_options[] = {
96 static int Control(sout_mux_t *, int, va_list);
97 static int AddStream(sout_mux_t *, sout_input_t *);
98 static void DelStream(sout_mux_t *, sout_input_t *);
99 static int Mux (sout_mux_t *);
100 static int MuxFrag (sout_mux_t *);
102 /*****************************************************************************
104 *****************************************************************************/
112 unsigned int i_flags;
115 typedef struct mp4_fragentry_t mp4_fragentry_t;
117 struct mp4_fragentry_t
121 mp4_fragentry_t *p_next;
124 typedef struct mp4_fragindex_t
126 uint64_t i_moofoffset;
133 typedef struct mp4_fragqueue_t
135 mp4_fragentry_t *p_first;
136 mp4_fragentry_t *p_last;
142 unsigned int i_track_id;
145 unsigned int i_entry_count;
146 unsigned int i_entry_max;
148 int64_t i_length_neg;
151 int64_t i_dts_start; /* applies to current segment only */
152 int64_t i_read_duration;
153 uint32_t i_timescale;
154 mtime_t i_starttime; /* the really first packet */
157 /* XXX: needed for other codecs too, see lavf */
160 /* for later stco fix-up (fast start files) */
165 int64_t i_last_dts; /* applies to current segment only */
166 int64_t i_last_length;
170 uint32_t i_trex_length;
171 uint32_t i_trex_size;
172 uint32_t i_tfhd_flags;
174 uint32_t i_current_run;
175 mp4_fragentry_t *p_held_entry;
176 mp4_fragqueue_t read;
177 mp4_fragqueue_t towrite;
178 mtime_t i_last_iframe_time;
179 mtime_t i_written_duration;
180 mp4_fragindex_t *p_indexentries;
181 uint32_t i_indexentriesmax;
182 uint32_t i_indexentries;
185 struct sout_mux_sys_t
194 mtime_t i_read_duration;
196 unsigned int i_nb_streams;
197 mp4_stream_t **pp_streams;
202 mtime_t i_written_duration;
203 uint32_t i_mfhd_sequence;
206 static bo_t *box_new (const char *fcc);
207 static bo_t *box_full_new(const char *fcc, uint8_t v, uint32_t f);
208 static void box_fix (bo_t *box);
209 static void box_gather (bo_t *box, bo_t *box2);
211 static void box_send(sout_mux_t *p_mux, bo_t *box);
213 static bo_t *GetMoovBox(sout_mux_t *p_mux);
215 static block_t *ConvertSUBT(block_t *);
216 static block_t *ConvertFromAnnexB(block_t *);
218 static const char avc1_short_start_code[3] = { 0, 0, 1 };
219 static const char avc1_start_code[4] = { 0, 0, 0, 1 };
221 /*****************************************************************************
223 *****************************************************************************/
224 static int Open(vlc_object_t *p_this)
226 sout_mux_t *p_mux = (sout_mux_t*)p_this;
227 sout_mux_sys_t *p_sys;
230 msg_Dbg(p_mux, "Mp4 muxer opened");
231 config_ChainParse(p_mux, SOUT_CFG_PREFIX, ppsz_sout_options, p_mux->p_cfg);
233 p_mux->pf_control = Control;
234 p_mux->pf_addstream = AddStream;
235 p_mux->pf_delstream = DelStream;
237 p_mux->p_sys = p_sys = malloc(sizeof(sout_mux_sys_t));
241 p_sys->i_nb_streams = 0;
242 p_sys->pp_streams = NULL;
243 p_sys->i_mdat_pos = 0;
244 p_sys->b_mov = p_mux->psz_mux && !strcmp(p_mux->psz_mux, "mov");
245 p_sys->b_3gp = p_mux->psz_mux && !strcmp(p_mux->psz_mux, "3gp");
246 p_sys->i_read_duration = 0;
247 p_sys->b_fragmented = false;
250 /* Now add ftyp header */
251 box = box_new("ftyp");
253 bo_add_fourcc(box, "3gp6");
255 bo_add_fourcc(box, "isom");
256 bo_add_32be (box, 0);
258 bo_add_fourcc(box, "3gp4");
260 bo_add_fourcc(box, "mp41");
261 bo_add_fourcc(box, "avc1");
264 p_sys->i_pos += box->len;
265 p_sys->i_mdat_pos = p_sys->i_pos;
267 box_send(p_mux, box);
271 * Quicktime actually doesn't like the 64 bits extensions !!! */
272 p_sys->b_64_ext = false;
274 /* Now add mdat header */
275 box = box_new("mdat");
276 bo_add_64be (box, 0); // enough to store an extended size
278 p_sys->i_pos += box->len;
280 box_send(p_mux, box);
285 /*****************************************************************************
287 *****************************************************************************/
288 static void Close(vlc_object_t *p_this)
290 sout_mux_t *p_mux = (sout_mux_t*)p_this;
291 sout_mux_sys_t *p_sys = p_mux->p_sys;
293 msg_Dbg(p_mux, "Close");
295 /* Update mdat size */
298 if (p_sys->i_pos - p_sys->i_mdat_pos >= (((uint64_t)1)<<32)) {
300 bo_add_32be (&bo, 1);
301 bo_add_fourcc(&bo, "mdat");
302 bo_add_64be (&bo, p_sys->i_pos - p_sys->i_mdat_pos);
304 bo_add_32be (&bo, 8);
305 bo_add_fourcc(&bo, "wide");
306 bo_add_32be (&bo, p_sys->i_pos - p_sys->i_mdat_pos - 8);
307 bo_add_fourcc(&bo, "mdat");
310 bo.b->i_buffer = bo.len;
311 sout_AccessOutSeek(p_mux->p_access, p_sys->i_mdat_pos);
312 sout_AccessOutWrite(p_mux->p_access, bo.b);
314 /* Create MOOV header */
315 uint64_t i_moov_pos = p_sys->i_pos;
316 bo_t *moov = GetMoovBox(p_mux);
318 /* Check we need to create "fast start" files */
319 p_sys->b_fast_start = var_GetBool(p_this, SOUT_CFG_PREFIX "faststart");
320 while (p_sys->b_fast_start) {
321 /* Move data to the end of the file so we can fit the moov header
323 int64_t i_size = p_sys->i_pos - p_sys->i_mdat_pos;
324 int i_moov_size = moov->len;
327 int64_t i_chunk = __MIN(32768, i_size);
328 block_t *p_buf = block_Alloc(i_chunk);
329 sout_AccessOutSeek(p_mux->p_access,
330 p_sys->i_mdat_pos + i_size - i_chunk);
331 if (sout_AccessOutRead(p_mux->p_access, p_buf) < i_chunk) {
332 msg_Warn(p_this, "read() not supported by access output, "
333 "won't create a fast start file");
334 p_sys->b_fast_start = false;
335 block_Release(p_buf);
338 sout_AccessOutSeek(p_mux->p_access, p_sys->i_mdat_pos + i_size +
339 i_moov_size - i_chunk);
340 sout_AccessOutWrite(p_mux->p_access, p_buf);
344 if (!p_sys->b_fast_start)
347 /* Fix-up samples to chunks table in MOOV header */
348 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
349 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
351 moov->len = p_stream->i_stco_pos;
352 for (unsigned i = 0; i < p_stream->i_entry_count; ) {
353 mp4_entry_t *entry = p_stream->entry;
354 if (p_stream->b_stco64)
355 bo_add_64be(moov, entry[i].i_pos + i_moov_size);
357 bo_add_32be(moov, entry[i].i_pos + i_moov_size);
359 for (; i < p_stream->i_entry_count; i++)
360 if (i >= p_stream->i_entry_count - 1 ||
361 entry[i].i_pos + entry[i].i_size != entry[i+1].i_pos) {
368 moov->len = i_moov_size;
369 i_moov_pos = p_sys->i_mdat_pos;
370 p_sys->b_fast_start = false;
373 /* Write MOOV header */
374 sout_AccessOutSeek(p_mux->p_access, i_moov_pos);
375 box_send(p_mux, moov);
378 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
379 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
381 es_format_Clean(&p_stream->fmt);
382 if (p_stream->a52_frame)
383 block_Release(p_stream->a52_frame);
384 free(p_stream->entry);
387 if (p_sys->i_nb_streams)
388 free(p_sys->pp_streams);
392 /*****************************************************************************
394 *****************************************************************************/
395 static int Control(sout_mux_t *p_mux, int i_query, va_list args)
402 case MUX_CAN_ADD_STREAM_WHILE_MUXING:
403 pb_bool = (bool*)va_arg(args, bool *);
407 case MUX_GET_ADD_STREAM_WAIT:
408 pb_bool = (bool*)va_arg(args, bool *);
412 case MUX_GET_MIME: /* Not needed, as not streamable */
418 /*****************************************************************************
420 *****************************************************************************/
421 static int AddStream(sout_mux_t *p_mux, sout_input_t *p_input)
423 sout_mux_sys_t *p_sys = p_mux->p_sys;
424 mp4_stream_t *p_stream;
426 switch(p_input->p_fmt->i_codec)
437 case VLC_CODEC_MJPGB:
443 case VLC_CODEC_AMR_NB:
444 case VLC_CODEC_AMR_WB:
449 msg_Warn(p_mux, "subtitle track added like in .mov (even when creating .mp4)");
452 msg_Err(p_mux, "unsupported codec %4.4s in mp4",
453 (char*)&p_input->p_fmt->i_codec);
457 p_stream = malloc(sizeof(mp4_stream_t));
460 es_format_Copy(&p_stream->fmt, p_input->p_fmt);
461 p_stream->i_track_id = p_sys->i_nb_streams + 1;
462 p_stream->i_length_neg = 0;
463 p_stream->i_entry_count = 0;
464 p_stream->i_entry_max = 1000;
466 calloc(p_stream->i_entry_max, sizeof(mp4_entry_t));
467 p_stream->i_dts_start = 0;
468 p_stream->i_read_duration = 0;
469 p_stream->a52_frame = NULL;
470 switch( p_stream->fmt.i_cat )
473 if(!p_stream->fmt.audio.i_rate)
475 msg_Warn( p_mux, "no audio rate given for stream %d, assuming 48KHz",
476 p_sys->i_nb_streams );
477 p_stream->fmt.audio.i_rate = 48000;
479 p_stream->i_timescale = p_stream->fmt.audio.i_rate;
482 if( !p_stream->fmt.video.i_frame_rate ||
483 !p_stream->fmt.video.i_frame_rate_base )
485 msg_Warn( p_mux, "Missing frame rate for stream %d, assuming 25fps",
486 p_sys->i_nb_streams );
487 p_stream->fmt.video.i_frame_rate = 25;
488 p_stream->fmt.video.i_frame_rate_base = 1;
490 p_stream->i_timescale = p_stream->fmt.video.i_frame_rate * 1000 /
491 p_stream->fmt.video.i_frame_rate_base;
494 p_stream->i_timescale = CLOCK_FREQ;
498 p_stream->i_starttime = p_sys->i_read_duration;
499 p_stream->b_hasbframes = false;
501 p_stream->i_last_dts = 0;
502 p_stream->i_last_length = 0;
504 p_stream->b_hasiframes = false;
505 p_stream->i_trex_length = 0;
506 p_stream->i_trex_size = 0;
508 p_stream->i_current_run = 0;
509 p_stream->read.p_first = NULL;
510 p_stream->read.p_last = NULL;
511 p_stream->towrite.p_first = NULL;
512 p_stream->towrite.p_last = NULL;
513 p_stream->p_held_entry = NULL;
514 p_stream->i_last_iframe_time = 0;
515 p_stream->i_written_duration = 0;
516 p_stream->p_indexentries = NULL;
517 p_stream->i_indexentriesmax = 0;
518 p_stream->i_indexentries = 0;
520 p_input->p_sys = p_stream;
522 msg_Dbg(p_mux, "adding input");
524 TAB_APPEND(p_sys->i_nb_streams, p_sys->pp_streams, p_stream);
528 /*****************************************************************************
530 *****************************************************************************/
531 static void DelStream(sout_mux_t *p_mux, sout_input_t *p_input)
534 msg_Dbg(p_mux, "removing input");
537 /*****************************************************************************
539 *****************************************************************************/
540 static int Mux(sout_mux_t *p_mux)
542 sout_mux_sys_t *p_sys = p_mux->p_sys;
545 int i_stream = sout_MuxGetStream(p_mux, 2, NULL);
549 sout_input_t *p_input = p_mux->pp_inputs[i_stream];
550 mp4_stream_t *p_stream = (mp4_stream_t*)p_input->p_sys;
554 p_data = block_FifoGet(p_input->p_fifo);
555 if (p_stream->fmt.i_codec == VLC_CODEC_H264 ||
556 p_stream->fmt.i_codec == VLC_CODEC_HEVC)
557 p_data = ConvertFromAnnexB(p_data);
558 else if (p_stream->fmt.i_codec == VLC_CODEC_SUBT)
559 p_data = ConvertSUBT(p_data);
560 else if (p_stream->fmt.i_codec == VLC_CODEC_A52 ||
561 p_stream->fmt.i_codec == VLC_CODEC_EAC3) {
562 if (p_stream->a52_frame == NULL && p_data->i_buffer >= 8)
563 p_stream->a52_frame = block_Duplicate(p_data);
567 /* Reset reference dts in case of discontinuity (ex: gather sout) */
568 if ( p_stream->i_entry_count == 0 || p_data->i_flags & BLOCK_FLAG_DISCONTINUITY )
570 p_stream->i_dts_start = p_data->i_dts;
571 p_stream->i_last_dts = p_data->i_dts;
572 p_stream->i_length_neg = 0;
575 if (p_stream->fmt.i_cat != SPU_ES) {
576 /* Fix length of the sample */
577 if (block_FifoCount(p_input->p_fifo) > 0) {
578 block_t *p_next = block_FifoShow(p_input->p_fifo);
579 if ( p_next->i_flags & BLOCK_FLAG_DISCONTINUITY )
580 { /* we have no way to know real length except by decoding */
581 if ( p_stream->fmt.i_cat == VIDEO_ES )
583 p_data->i_length = CLOCK_FREQ *
584 p_stream->fmt.video.i_frame_rate_base /
585 p_stream->fmt.video.i_frame_rate;
586 msg_Dbg( p_mux, "video track %u fixup to %"PRId64" for sample %u",
587 p_stream->i_track_id, p_data->i_length, p_stream->i_entry_count );
589 else if ( p_stream->fmt.i_cat == AUDIO_ES &&
590 p_stream->fmt.audio.i_rate &&
591 p_data->i_nb_samples )
593 p_data->i_length = CLOCK_FREQ * p_data->i_nb_samples /
594 p_stream->fmt.audio.i_rate;
595 msg_Dbg( p_mux, "audio track %u fixup to %"PRId64" for sample %u",
596 p_stream->i_track_id, p_data->i_length, p_stream->i_entry_count );
598 else if ( p_data->i_length <= 0 )
600 msg_Warn( p_mux, "unknown length for track %u sample %u",
601 p_stream->i_track_id, p_stream->i_entry_count );
602 p_data->i_length = 1;
607 int64_t i_diff = p_next->i_dts - p_data->i_dts;
608 if (i_diff < CLOCK_FREQ) /* protection */
609 p_data->i_length = i_diff;
612 if (p_data->i_length <= 0) {
613 msg_Warn(p_mux, "i_length <= 0");
614 p_stream->i_length_neg += p_data->i_length - 1;
615 p_data->i_length = 1;
616 } else if (p_stream->i_length_neg < 0) {
617 int64_t i_recover = __MIN(p_data->i_length / 4, - p_stream->i_length_neg);
619 p_data->i_length -= i_recover;
620 p_stream->i_length_neg += i_recover;
624 if (p_stream->fmt.i_cat == SPU_ES && p_stream->i_entry_count > 0) {
625 int64_t i_length = p_data->i_dts - p_stream->i_last_dts;
627 if (i_length <= 0) /* FIXME handle this broken case */
631 if (p_stream->entry[p_stream->i_entry_count-1].i_length <= 0)
632 p_stream->entry[p_stream->i_entry_count-1].i_length = i_length;
635 /* add index entry */
636 mp4_entry_t *e = &p_stream->entry[p_stream->i_entry_count];
637 e->i_pos = p_sys->i_pos;
638 e->i_size = p_data->i_buffer;
640 if ( p_data->i_dts > VLC_TS_INVALID && p_data->i_pts > p_data->i_dts )
642 e->i_pts_dts = p_data->i_pts - p_data->i_dts;
643 if ( !p_stream->b_hasbframes )
644 p_stream->b_hasbframes = true;
646 else e->i_pts_dts = 0;
648 e->i_length = p_data->i_length;
649 e->i_flags = p_data->i_flags;
651 p_stream->i_entry_count++;
652 /* XXX: -1 to always have 2 entry for easy adding of empty SPU */
653 if (p_stream->i_entry_count >= p_stream->i_entry_max - 1) {
654 p_stream->i_entry_max += 1000;
655 p_stream->entry = xrealloc(p_stream->entry,
656 p_stream->i_entry_max * sizeof(mp4_entry_t));
660 p_stream->i_read_duration += __MAX( 0, p_data->i_length );
661 p_stream->i_last_length = p_data->i_length;
662 p_sys->i_pos += p_data->i_buffer;
664 /* Save the DTS for SPU */
665 p_stream->i_last_dts = p_data->i_dts;
668 sout_AccessOutWrite(p_mux->p_access, p_data);
670 /* close subtitle with empty frame */
671 if (p_stream->fmt.i_cat == SPU_ES) {
672 int64_t i_length = p_stream->entry[p_stream->i_entry_count-1].i_length;
674 if ( i_length != 0 && (p_data = block_Alloc(3)) ) {
676 msg_Dbg(p_mux, "writing an empty sub") ;
678 /* Append a idx entry */
679 mp4_entry_t *e = &p_stream->entry[p_stream->i_entry_count];
680 e->i_pos = p_sys->i_pos;
686 /* XXX: No need to grow the entry here */
687 p_stream->i_entry_count++;
690 p_stream->i_last_dts += i_length;
693 p_data->i_dts = p_stream->i_last_dts;
694 p_data->i_dts = p_data->i_pts;
695 p_data->p_buffer[0] = 0;
696 p_data->p_buffer[1] = 1;
697 p_data->p_buffer[2] = ' ';
699 p_sys->i_pos += p_data->i_buffer;
701 sout_AccessOutWrite(p_mux->p_access, p_data);
704 /* Fix duration = current segment starttime + duration within */
705 p_stream->i_read_duration = p_stream->i_starttime + ( p_stream->i_last_dts - p_stream->i_dts_start );
709 /* Update the global segment/media duration */
710 for ( unsigned int i=0; i<p_sys->i_nb_streams; i++ )
712 if ( p_sys->pp_streams[i]->i_read_duration > p_sys->i_read_duration )
713 p_sys->i_read_duration = p_sys->pp_streams[i]->i_read_duration;
719 /*****************************************************************************
721 *****************************************************************************/
722 static block_t *ConvertSUBT(block_t *p_block)
724 p_block = block_Realloc(p_block, 2, p_block->i_buffer);
727 /* No trailling '\0' */
728 if (p_block->i_buffer > 2 && p_block->p_buffer[p_block->i_buffer-1] == '\0')
731 p_block->p_buffer[0] = ((p_block->i_buffer - 2) >> 8)&0xff;
732 p_block->p_buffer[1] = ((p_block->i_buffer - 2) )&0xff;
737 static block_t *ConvertFromAnnexB(block_t *p_block)
739 if(p_block->i_buffer < 4)
741 block_Release(p_block);
745 if(memcmp(p_block->p_buffer, avc1_start_code, 4))
747 if(!memcmp(p_block->p_buffer, avc1_short_start_code, 3))
749 p_block = block_Realloc(p_block, 1, p_block->i_buffer);
753 else /* No startcode on start */
755 block_Release(p_block);
760 uint8_t *last = p_block->p_buffer;
761 uint8_t *dat = &p_block->p_buffer[4];
762 uint8_t *end = &p_block->p_buffer[p_block->i_buffer];
764 /* Replace the 4 bytes start code with 4 bytes size */
766 while (dat < end - 4) {
767 if (!memcmp(dat, avc1_start_code, 4))
771 else if(!memcmp(dat, avc1_short_start_code, 3))
773 /* save offsets as we don't know if realloc will replace buffer */
774 size_t i_last = last - p_block->p_buffer;
775 size_t i_dat = dat - p_block->p_buffer;
776 size_t i_end = end - p_block->p_buffer;
778 p_block = block_Realloc(p_block, 0, p_block->i_buffer + 1);
782 /* restore offsets */
783 last = &p_block->p_buffer[i_last];
784 dat = &p_block->p_buffer[i_dat];
785 end = &p_block->p_buffer[i_end];
788 memmove(&dat[4], &dat[3], end - &dat[3]);
798 SetDWBE(last, dat - &last[4]);
800 /* Skip blocks with SPS/PPS */
801 //if ((last[4]&0x1f) == 7 || (last[4]&0x1f) == 8)
802 // ; // FIXME Find a way to skip dat without frelling everything
809 static bo_t *GetESDS(mp4_stream_t *p_stream)
812 int64_t i_bitrate_avg = 0;
813 int64_t i_bitrate_max = 0;
815 /* Compute avg/max bitrate */
816 for (unsigned i = 0; i < p_stream->i_entry_count; i++) {
817 i_bitrate_avg += p_stream->entry[i].i_size;
818 if (p_stream->entry[i].i_length > 0) {
819 int64_t i_bitrate = INT64_C(8000000) * p_stream->entry[i].i_size / p_stream->entry[i].i_length;
820 if (i_bitrate > i_bitrate_max)
821 i_bitrate_max = i_bitrate;
825 if (p_stream->i_read_duration > 0)
826 i_bitrate_avg = INT64_C(8000000) * i_bitrate_avg / p_stream->i_read_duration;
829 if (i_bitrate_max <= 1)
830 i_bitrate_max = 0x7fffffff;
833 int i_decoder_specific_info_size = (p_stream->fmt.i_extra > 0) ? 5 + p_stream->fmt.i_extra : 0;
835 esds = box_full_new("esds", 0, 0);
838 bo_add_mp4_tag_descr(esds, 0x03, 3 + 5 + 13 + i_decoder_specific_info_size + 5 + 1);
839 bo_add_16be(esds, p_stream->i_track_id);
840 bo_add_8 (esds, 0x1f); // flags=0|streamPriority=0x1f
842 /* DecoderConfigDescr */
843 bo_add_mp4_tag_descr(esds, 0x04, 13 + i_decoder_specific_info_size);
845 int i_object_type_indication;
846 switch(p_stream->fmt.i_codec)
849 i_object_type_indication = 0x20;
852 /* MPEG-I=0x6b, MPEG-II = 0x60 -> 0x65 */
853 i_object_type_indication = 0x65;
856 /* MPEG-I=0x6b, MPEG-II = 0x60 -> 0x65 */
857 i_object_type_indication = 0x6b;
860 /* FIXME for mpeg2-aac == 0x66->0x68 */
861 i_object_type_indication = 0x40;
864 i_object_type_indication =
865 p_stream->fmt.audio.i_rate < 32000 ? 0x69 : 0x6b;
868 i_object_type_indication = 0x00;
871 int i_stream_type = p_stream->fmt.i_cat == VIDEO_ES ? 0x04 : 0x05;
873 bo_add_8 (esds, i_object_type_indication);
874 bo_add_8 (esds, (i_stream_type << 2) | 1);
875 bo_add_24be(esds, 1024 * 1024); // bufferSizeDB
876 bo_add_32be(esds, i_bitrate_max); // maxBitrate
877 bo_add_32be(esds, i_bitrate_avg); // avgBitrate
879 if (p_stream->fmt.i_extra > 0) {
880 /* DecoderSpecificInfo */
881 bo_add_mp4_tag_descr(esds, 0x05, p_stream->fmt.i_extra);
883 for (int i = 0; i < p_stream->fmt.i_extra; i++)
884 bo_add_8(esds, ((uint8_t*)p_stream->fmt.p_extra)[i]);
887 /* SL_Descr mandatory */
888 bo_add_mp4_tag_descr(esds, 0x06, 1);
889 bo_add_8 (esds, 0x02); // sl_predefined
894 static bo_t *GetWaveTag(mp4_stream_t *p_stream)
899 wave = box_new("wave");
901 box = box_new("frma");
902 bo_add_fourcc(box, "mp4a");
903 box_gather(wave, box);
905 box = box_new("mp4a");
907 box_gather(wave, box);
909 box = GetESDS(p_stream);
910 box_gather(wave, box);
912 box = box_new("srcq");
913 bo_add_32be(box, 0x40);
914 box_gather(wave, box);
917 bo_add_32be(wave, 8); /* new empty box */
918 bo_add_32be(wave, 0); /* box label */
923 static bo_t *GetDec3Tag(mp4_stream_t *p_stream)
925 if (!p_stream->a52_frame)
929 bs_init(&s, p_stream->a52_frame->p_buffer, sizeof(p_stream->a52_frame->i_buffer));
930 bs_skip(&s, 16); // syncword
932 uint8_t fscod, bsid, bsmod, acmod, lfeon, strmtyp;
936 strmtyp = bs_read(&s, 2);
938 if (strmtyp & 0x1) // dependant or reserved stream
941 if (bs_read(&s, 3) != 0x0) // substreamid: we don't support more than 1 stream
945 bs_skip(&s, 11); // frmsizecod
946 fscod = bs_read(&s, 2);
948 bs_skip(&s, 2); // fscod2
951 numblkscod = bs_read(&s, 2);
954 acmod = bs_read(&s, 3);
955 lfeon = bs_read1(&s);
957 bsid = bs_read(&s, 5);
959 bs_skip(&s, 5); // dialnorm
960 if (bs_read1(&s)) // compre
961 bs_skip(&s, 5); // compr
964 bs_skip(&s, 5); // dialnorm2
965 if (bs_read1(&s)) // compr2e
966 bs_skip(&s, 8); // compr2
969 if (strmtyp == 0x1) // dependant stream XXX: unsupported
970 if (bs_read1(&s)) // chanmape
971 bs_skip(&s, 16); // chanmap
973 /* we have to skip mixing info to read bsmod */
974 if (bs_read1(&s)) { // mixmdate
975 if (acmod > 0x2) // 2+ channels
976 bs_skip(&s, 2); // dmixmod
977 if ((acmod & 0x1) && (acmod > 0x2)) // 3 front channels
978 bs_skip(&s, 3 + 3); // ltrtcmixlev + lorocmixlev
979 if (acmod & 0x4) // surround channel
980 bs_skip(&s, 3 + 3); // ltrsurmixlev + lorosurmixlev
983 bs_skip(&s, 5); // lfemixlevcod
984 if (strmtyp == 0) { // independant stream
985 if (bs_read1(&s)) // pgmscle
986 bs_skip(&s, 6); // pgmscl
987 if (acmod == 0x0) // dual mono
988 if (bs_read1(&s)) // pgmscl2e
989 bs_skip(&s, 6); // pgmscl2
990 if (bs_read1(&s)) // extpgmscle
991 bs_skip(&s, 6); // extpgmscl
992 uint8_t mixdef = bs_read(&s, 2);
995 else if (mixdef == 0x2)
997 else if (mixdef == 0x3) {
998 uint8_t mixdeflen = bs_read(&s, 5);
999 bs_skip(&s, 8 * (mixdeflen + 2));
1001 if (acmod < 0x2) { // mono or dual mono
1002 if (bs_read1(&s)) // paninfoe
1003 bs_skip(&s, 14); // paninfo
1004 if (acmod == 0) // dual mono
1005 if (bs_read1(&s)) // paninfo2e
1006 bs_skip(&s, 14); // paninfo2
1008 if (bs_read1(&s)) { // frmmixcfginfoe
1009 static const int blocks[4] = { 1, 2, 3, 6 };
1010 int number_of_blocks = blocks[numblkscod];
1011 if (number_of_blocks == 1)
1012 bs_skip(&s, 5); // blkmixcfginfo[0]
1013 else for (int i = 0; i < number_of_blocks; i++)
1014 if (bs_read1(&s)) // blkmixcfginfoe
1015 bs_skip(&s, 5); // blkmixcfginfo[i]
1020 if (bs_read1(&s)) // infomdate
1021 bsmod = bs_read(&s, 3);
1023 uint8_t mp4_eac3_header[5];
1024 bs_init(&s, mp4_eac3_header, sizeof(mp4_eac3_header));
1026 int data_rate = p_stream->fmt.i_bitrate / 1000;
1027 bs_write(&s, 13, data_rate);
1028 bs_write(&s, 3, 0); // num_ind_sub - 1
1029 bs_write(&s, 2, fscod);
1030 bs_write(&s, 5, bsid);
1031 bs_write(&s, 5, bsmod);
1032 bs_write(&s, 3, acmod);
1033 bs_write(&s, 1, lfeon);
1034 bs_write(&s, 3, 0); // reserved
1035 bs_write(&s, 4, 0); // num_dep_sub
1036 bs_write(&s, 1, 0); // reserved
1038 bo_t *dec3 = box_new("dec3");
1040 bo_add_mem(dec3, sizeof(mp4_eac3_header), mp4_eac3_header);
1045 static bo_t *GetDac3Tag(mp4_stream_t *p_stream)
1047 if (!p_stream->a52_frame)
1050 bo_t *dac3 = box_new("dac3");
1053 bs_init(&s, p_stream->a52_frame->p_buffer, sizeof(p_stream->a52_frame->i_buffer));
1055 uint8_t fscod, bsid, bsmod, acmod, lfeon, frmsizecod;
1057 bs_skip(&s, 16 + 16); // syncword + crc
1059 fscod = bs_read(&s, 2);
1060 frmsizecod = bs_read(&s, 6);
1061 bsid = bs_read(&s, 5);
1062 bsmod = bs_read(&s, 3);
1063 acmod = bs_read(&s, 3);
1065 bs_skip(&s, 2); // dsurmod
1067 if ((acmod & 1) && acmod != 1)
1068 bs_skip(&s, 2); // cmixlev
1070 bs_skip(&s, 2); // surmixlev
1073 lfeon = bs_read1(&s);
1075 uint8_t mp4_a52_header[3];
1076 bs_init(&s, mp4_a52_header, sizeof(mp4_a52_header));
1078 bs_write(&s, 2, fscod);
1079 bs_write(&s, 5, bsid);
1080 bs_write(&s, 3, bsmod);
1081 bs_write(&s, 3, acmod);
1082 bs_write(&s, 1, lfeon);
1083 bs_write(&s, 5, frmsizecod >> 1); // bit_rate_code
1084 bs_write(&s, 5, 0); // reserved
1086 bo_add_mem(dac3, sizeof(mp4_a52_header), mp4_a52_header);
1091 static bo_t *GetDamrTag(mp4_stream_t *p_stream)
1095 damr = box_new("damr");
1097 bo_add_fourcc(damr, "REFC");
1100 if (p_stream->fmt.i_codec == VLC_CODEC_AMR_NB)
1101 bo_add_16be(damr, 0x81ff); /* Mode set (all modes for AMR_NB) */
1103 bo_add_16be(damr, 0x83ff); /* Mode set (all modes for AMR_WB) */
1104 bo_add_16be(damr, 0x1); /* Mode change period (no restriction) */
1109 static bo_t *GetD263Tag(void)
1113 d263 = box_new("d263");
1115 bo_add_fourcc(d263, "VLC ");
1116 bo_add_16be(d263, 0xa);
1122 static void hevcParseVPS(uint8_t * p_buffer, size_t i_buffer, uint8_t *general,
1123 uint8_t * numTemporalLayer, bool * temporalIdNested)
1125 const size_t i_decoded_nal_size = 512;
1126 uint8_t p_dec_nal[i_decoded_nal_size];
1127 size_t i_size = (i_buffer < i_decoded_nal_size)?i_buffer:i_decoded_nal_size;
1128 nal_decode(p_buffer, p_dec_nal, i_size);
1130 /* first two bytes are the NAL header, 3rd and 4th are:
1131 vps_video_parameter_set_id(4)
1132 vps_reserved_3_2bis(2)
1133 vps_max_layers_minus1(6)
1134 vps_max_sub_layers_minus1(3)
1135 vps_temporal_id_nesting_flags
1137 *numTemporalLayer = ((p_dec_nal[3] & 0x0E) >> 1) + 1;
1138 *temporalIdNested = (bool)(p_dec_nal[3] & 0x01);
1140 /* 5th & 6th are reserved 0xffff */
1141 /* copy the first 12 bytes of profile tier */
1142 memcpy(general, &p_dec_nal[6], 12);
1145 static void hevcParseSPS(uint8_t * p_buffer, size_t i_buffer, uint8_t * chroma_idc,
1146 uint8_t *bit_depth_luma_minus8, uint8_t *bit_depth_chroma_minus8)
1148 const size_t i_decoded_nal_size = 512;
1149 uint8_t p_dec_nal[i_decoded_nal_size];
1150 size_t i_size = (i_buffer < i_decoded_nal_size)?i_buffer-2:i_decoded_nal_size;
1151 nal_decode(p_buffer+2, p_dec_nal, i_size);
1153 bs_init(&bs, p_dec_nal, i_size);
1157 uint32_t sps_max_sublayer_minus1 = bs_read(&bs, 3);
1159 /* skip nesting flag */
1162 hevc_skip_profile_tiers_level(&bs, sps_max_sublayer_minus1);
1165 (void) bs_read_ue( &bs );
1167 *chroma_idc = bs_read_ue(&bs);
1168 if (*chroma_idc == 3)
1171 /* skip width and heigh */
1172 (void) bs_read_ue( &bs );
1173 (void) bs_read_ue( &bs );
1175 uint32_t conformance_window_flag = bs_read1(&bs);
1176 if (conformance_window_flag) {
1178 (void) bs_read_ue(&bs);
1179 (void) bs_read_ue(&bs);
1180 (void) bs_read_ue(&bs);
1181 (void) bs_read_ue(&bs);
1183 *bit_depth_luma_minus8 = bs_read_ue(&bs);
1184 *bit_depth_chroma_minus8 = bs_read_ue(&bs);
1187 static bo_t *GetHvcCTag(mp4_stream_t *p_stream)
1189 /* Generate hvcC box matching iso/iec 14496-15 3rd edition */
1190 bo_t *hvcC = box_new("hvcC");
1191 if(!p_stream->fmt.i_extra)
1199 /* According to the specification HEVC stream can have
1200 * 16 vps id and an "unlimited" number of sps and pps id using ue(v) id*/
1201 struct nal p_vps[16], *p_sps = NULL, *p_pps = NULL, *p_sei = NULL,
1203 size_t i_vps = 0, i_sps = 0, i_pps = 0, i_sei = 0;
1204 uint8_t i_num_arrays = 0;
1206 uint8_t * p_buffer = p_stream->fmt.p_extra;
1207 size_t i_buffer = p_stream->fmt.i_extra;
1209 uint8_t general_configuration[12] = {0};
1210 uint8_t i_numTemporalLayer = 0;
1211 uint8_t i_chroma_idc = 1;
1212 uint8_t i_bit_depth_luma_minus8 = 0;
1213 uint8_t i_bit_depth_chroma_minus8 = 0;
1214 bool b_temporalIdNested = false;
1216 uint32_t cmp = 0xFFFFFFFF;
1218 /* look for start code 0X0000001 */
1220 cmp = (cmp << 8) | *p_buffer;
1221 if((cmp ^ UINT32_C(0x100)) <= UINT32_C(0xFF))
1227 p_nal->i_buffer = p_buffer - p_nal->p_buffer - ((i_buffer)?3:0);
1229 switch (*p_buffer & 0x72) {
1232 p_nal = &p_vps[i_vps++];
1233 p_nal->p_buffer = p_buffer;
1234 /* Only keep the general profile from the first VPS
1235 * if there are several (this shouldn't happen so soon) */
1237 hevcParseVPS(p_buffer, i_buffer, general_configuration,
1238 &i_numTemporalLayer, &b_temporalIdNested);
1244 struct nal * p_tmp = realloc(p_sps, sizeof(struct nal) * (i_sps + 1));
1248 p_nal = &p_sps[i_sps++];
1249 p_nal->p_buffer = p_buffer;
1250 if (i_sps == 1 && i_buffer > 15) {
1251 /* Get Chroma_idc and bitdepths */
1252 hevcParseSPS(p_buffer, i_buffer, &i_chroma_idc,
1253 &i_bit_depth_luma_minus8, &i_bit_depth_chroma_minus8);
1260 struct nal * p_tmp = realloc(p_pps, sizeof(struct nal) * (i_pps + 1));
1264 p_nal = &p_pps[i_pps++];
1265 p_nal->p_buffer = p_buffer;
1273 struct nal * p_tmp = realloc(p_sei, sizeof(struct nal) * (i_sei + 1));
1277 p_nal = &p_sei[i_sei++];
1278 p_nal->p_buffer = p_buffer;
1288 bo_add_8(hvcC, 0x01);
1289 bo_add_mem(hvcC, 12, general_configuration);
1290 /* Don't set min spatial segmentation */
1291 bo_add_16be(hvcC, 0xF000);
1292 /* Don't set parallelism type since segmentation isn't set */
1293 bo_add_8(hvcC, 0xFC);
1294 bo_add_8(hvcC, (0xFC | (i_chroma_idc & 0x03)));
1295 bo_add_8(hvcC, (0xF8 | (i_bit_depth_luma_minus8 & 0x07)));
1296 bo_add_8(hvcC, (0xF8 | (i_bit_depth_chroma_minus8 & 0x07)));
1298 /* Don't set framerate */
1299 bo_add_16be(hvcC, 0x0000);
1300 /* Force NAL size of 4 bytes that replace the startcode */
1301 bo_add_8(hvcC, (((i_numTemporalLayer & 0x07) << 3) |
1302 (b_temporalIdNested << 2) | 0x03));
1303 bo_add_8(hvcC, i_num_arrays);
1307 /* Write VPS without forcing array_completeness */
1309 bo_add_16be(hvcC, i_vps);
1310 for (size_t i = 0; i < i_vps; i++) {
1312 bo_add_16be(hvcC, p_nal->i_buffer);
1313 bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
1318 /* Write SPS without forcing array_completeness */
1320 bo_add_16be(hvcC, i_sps);
1321 for (size_t i = 0; i < i_sps; i++) {
1323 bo_add_16be(hvcC, p_nal->i_buffer);
1324 bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
1329 /* Write PPS without forcing array_completeness */
1331 bo_add_16be(hvcC, i_pps);
1332 for (size_t i = 0; i < i_pps; i++) {
1334 bo_add_16be(hvcC, p_nal->i_buffer);
1335 bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
1340 /* Write SEI without forcing array_completeness */
1342 bo_add_16be(hvcC, i_sei);
1343 for (size_t i = 0; i < i_sei; i++) {
1345 bo_add_16be(hvcC, p_nal->i_buffer);
1346 bo_add_mem(hvcC, p_nal->i_buffer, p_nal->p_buffer);
1352 static bo_t *GetAvcCTag(mp4_stream_t *p_stream)
1355 uint8_t *p_sps = NULL;
1356 uint8_t *p_pps = NULL;
1360 if (p_stream->fmt.i_extra > 0) {
1361 /* FIXME: take into account multiple sps/pps */
1362 uint8_t *p_buffer = p_stream->fmt.p_extra;
1363 int i_buffer = p_stream->fmt.i_extra;
1365 while (i_buffer > 3) {
1366 while (memcmp(p_buffer, &avc1_start_code[1], 3)) {
1370 const int i_nal_type = p_buffer[3]&0x1f;
1371 int i_startcode = 0;
1373 for (int i_offset = 1; i_offset+2 < i_buffer ; i_offset++)
1374 if (!memcmp(&p_buffer[i_offset], &avc1_start_code[1], 3)) {
1375 /* we found another startcode */
1376 i_startcode = i_offset;
1377 while (p_buffer[i_startcode-1] == 0 && i_startcode > 0)
1382 int i_size = i_startcode ? i_startcode : i_buffer;
1384 if (i_nal_type == 7) {
1385 p_sps = &p_buffer[3];
1386 i_sps_size = i_size - 3;
1388 if (i_nal_type == 8) {
1389 p_pps = &p_buffer[3];
1390 i_pps_size = i_size - 3;
1397 /* FIXME use better value */
1398 avcC = box_new("avcC");
1399 bo_add_8(avcC, 1); /* configuration version */
1400 bo_add_8(avcC, i_sps_size ? p_sps[1] : 77);
1401 bo_add_8(avcC, i_sps_size ? p_sps[2] : 64);
1402 bo_add_8(avcC, i_sps_size ? p_sps[3] : 30); /* level, 5.1 */
1403 bo_add_8(avcC, 0xff); /* 0b11111100 | lengthsize = 0x11 */
1405 bo_add_8(avcC, 0xe0 | (i_sps_size > 0 ? 1 : 0)); /* 0b11100000 | sps_count */
1406 if (i_sps_size > 0) {
1407 bo_add_16be(avcC, i_sps_size);
1408 bo_add_mem(avcC, i_sps_size, p_sps);
1411 bo_add_8(avcC, (i_pps_size > 0 ? 1 : 0)); /* pps_count */
1412 if (i_pps_size > 0) {
1413 bo_add_16be(avcC, i_pps_size);
1414 bo_add_mem(avcC, i_pps_size, p_pps);
1420 /* TODO: No idea about these values */
1421 static bo_t *GetSVQ3Tag(mp4_stream_t *p_stream)
1423 bo_t *smi = box_new("SMI ");
1425 if (p_stream->fmt.i_extra > 0x4e) {
1426 uint8_t *p_end = &((uint8_t*)p_stream->fmt.p_extra)[p_stream->fmt.i_extra];
1427 uint8_t *p = &((uint8_t*)p_stream->fmt.p_extra)[0x46];
1429 while (p + 8 < p_end) {
1430 int i_size = GetDWBE(p);
1431 if (i_size <= 1) /* FIXME handle 1 as long size */
1433 if (!strncmp((const char *)&p[4], "SMI ", 4)) {
1434 bo_add_mem(smi, p_end - p - 8, &p[8]);
1441 /* Create a dummy one in fallback */
1442 bo_add_fourcc(smi, "SEQH");
1443 bo_add_32be(smi, 0x5);
1444 bo_add_32be(smi, 0xe2c0211d);
1445 bo_add_8(smi, 0xc0);
1450 static bo_t *GetUdtaTag(sout_mux_t *p_mux)
1452 sout_mux_sys_t *p_sys = p_mux->p_sys;
1453 bo_t *udta = box_new("udta");
1456 for (unsigned int i_track = 0; i_track < p_sys->i_nb_streams; i_track++) {
1457 mp4_stream_t *p_stream = p_sys->pp_streams[i_track];
1458 vlc_fourcc_t codec = p_stream->fmt.i_codec;
1460 if (codec == VLC_CODEC_MP4V || codec == VLC_CODEC_MP4A) {
1461 bo_t *box = box_new("\251req");
1463 bo_add_16be(box, sizeof("QuickTime 6.0 or greater") - 1);
1464 bo_add_16be(box, 0);
1465 bo_add_mem(box, sizeof("QuickTime 6.0 or greater") - 1,
1466 (uint8_t *)"QuickTime 6.0 or greater");
1467 box_gather(udta, box);
1474 bo_t *box = box_new("\251enc");
1476 bo_add_16be(box, sizeof(PACKAGE_STRING " stream output") - 1);
1477 bo_add_16be(box, 0);
1478 bo_add_mem(box, sizeof(PACKAGE_STRING " stream output") - 1,
1479 (uint8_t*)PACKAGE_STRING " stream output");
1480 box_gather(udta, box);
1484 vlc_meta_t *p_meta = p_mux->p_sout->p_meta;
1486 #define ADD_META_BOX(type, box_string) { \
1488 if (vlc_meta_Get(p_meta, vlc_meta_##type)) \
1489 box = box_new("\251" box_string); \
1491 bo_add_16be(box, strlen(vlc_meta_Get(p_meta, vlc_meta_##type))); \
1492 bo_add_16be(box, 0); \
1493 bo_add_mem(box, strlen(vlc_meta_Get(p_meta, vlc_meta_##type)), \
1494 (uint8_t*)(vlc_meta_Get(p_meta, vlc_meta_##type))); \
1495 box_gather(udta, box); \
1498 ADD_META_BOX(Title, "nam");
1499 ADD_META_BOX(Artist, "ART");
1500 ADD_META_BOX(Genre, "gen");
1501 ADD_META_BOX(Copyright, "cpy");
1502 ADD_META_BOX(Description, "des");
1503 ADD_META_BOX(Date, "day");
1504 ADD_META_BOX(URL, "url");
1511 static bo_t *GetSounBox(sout_mux_t *p_mux, mp4_stream_t *p_stream)
1513 sout_mux_sys_t *p_sys = p_mux->p_sys;
1514 bool b_descr = true;
1515 vlc_fourcc_t codec = p_stream->fmt.i_codec;
1518 if (codec == VLC_CODEC_MPGA) {
1521 memcpy(fcc, ".mp3", 4);
1523 memcpy(fcc, "mp4a", 4);
1524 } else if (codec == VLC_CODEC_A52) {
1525 memcpy(fcc, "ac-3", 4);
1526 } else if (codec == VLC_CODEC_EAC3) {
1527 memcpy(fcc, "ec-3", 4);
1529 vlc_fourcc_to_char(codec, fcc);
1531 bo_t *soun = box_new(fcc);
1532 for (int i = 0; i < 6; i++)
1533 bo_add_8(soun, 0); // reserved;
1534 bo_add_16be(soun, 1); // data-reference-index
1536 /* SoundDescription */
1537 if (p_sys->b_mov && codec == VLC_CODEC_MP4A)
1538 bo_add_16be(soun, 1); // version 1;
1540 bo_add_16be(soun, 0); // version 0;
1541 bo_add_16be(soun, 0); // revision level (0)
1542 bo_add_32be(soun, 0); // vendor
1544 bo_add_16be(soun, p_stream->fmt.audio.i_channels);
1546 bo_add_16be(soun, p_stream->fmt.audio.i_bitspersample ?
1547 p_stream->fmt.audio.i_bitspersample : 16);
1548 bo_add_16be(soun, -2); // compression id
1549 bo_add_16be(soun, 0); // packet size (0)
1550 bo_add_16be(soun, p_stream->fmt.audio.i_rate); // sampleratehi
1551 bo_add_16be(soun, 0); // sampleratelo
1553 /* Extended data for SoundDescription V1 */
1554 if (p_sys->b_mov && p_stream->fmt.i_codec == VLC_CODEC_MP4A) {
1555 /* samples per packet */
1556 bo_add_32be(soun, p_stream->fmt.audio.i_frame_length);
1557 bo_add_32be(soun, 1536); /* bytes per packet */
1558 bo_add_32be(soun, 2); /* bytes per frame */
1559 /* bytes per sample */
1560 bo_add_32be(soun, 2 /*p_stream->fmt.audio.i_bitspersample/8 */);
1563 /* Add an ES Descriptor */
1567 if (p_sys->b_mov && codec == VLC_CODEC_MP4A)
1568 box = GetWaveTag(p_stream);
1569 else if (codec == VLC_CODEC_AMR_NB)
1570 box = GetDamrTag(p_stream);
1571 else if (codec == VLC_CODEC_A52)
1572 box = GetDac3Tag(p_stream);
1573 else if (codec == VLC_CODEC_EAC3)
1574 box = GetDec3Tag(p_stream);
1576 box = GetESDS(p_stream);
1579 box_gather(soun, box);
1585 static bo_t *GetVideBox(mp4_stream_t *p_stream)
1589 switch(p_stream->fmt.i_codec)
1591 case VLC_CODEC_MP4V:
1592 case VLC_CODEC_MPGV: memcpy(fcc, "mp4v", 4); break;
1593 case VLC_CODEC_MJPG: memcpy(fcc, "mjpa", 4); break;
1594 case VLC_CODEC_SVQ1: memcpy(fcc, "SVQ1", 4); break;
1595 case VLC_CODEC_SVQ3: memcpy(fcc, "SVQ3", 4); break;
1596 case VLC_CODEC_H263: memcpy(fcc, "s263", 4); break;
1597 case VLC_CODEC_H264: memcpy(fcc, "avc1", 4); break;
1598 case VLC_CODEC_HEVC: memcpy(fcc, "hvc1", 4); break;
1599 case VLC_CODEC_YV12: memcpy(fcc, "yv12", 4); break;
1600 case VLC_CODEC_YUYV: memcpy(fcc, "yuy2", 4); break;
1602 vlc_fourcc_to_char(p_stream->fmt.i_codec, fcc);
1606 bo_t *vide = box_new(fcc);
1607 for (int i = 0; i < 6; i++)
1608 bo_add_8(vide, 0); // reserved;
1609 bo_add_16be(vide, 1); // data-reference-index
1611 bo_add_16be(vide, 0); // predefined;
1612 bo_add_16be(vide, 0); // reserved;
1613 for (int i = 0; i < 3; i++)
1614 bo_add_32be(vide, 0); // predefined;
1616 bo_add_16be(vide, p_stream->fmt.video.i_width); // i_width
1617 bo_add_16be(vide, p_stream->fmt.video.i_height); // i_height
1619 bo_add_32be(vide, 0x00480000); // h 72dpi
1620 bo_add_32be(vide, 0x00480000); // v 72dpi
1622 bo_add_32be(vide, 0); // data size, always 0
1623 bo_add_16be(vide, 1); // frames count per sample
1626 for (int i = 0; i < 32; i++)
1629 bo_add_16be(vide, 0x18); // depth
1630 bo_add_16be(vide, 0xffff); // predefined
1632 /* add an ES Descriptor */
1633 switch(p_stream->fmt.i_codec)
1635 case VLC_CODEC_MP4V:
1636 case VLC_CODEC_MPGV:
1637 box_gather(vide, GetESDS(p_stream));
1640 case VLC_CODEC_H263:
1641 box_gather(vide, GetD263Tag());
1644 case VLC_CODEC_SVQ3:
1645 box_gather(vide, GetSVQ3Tag(p_stream));
1648 case VLC_CODEC_H264:
1649 box_gather(vide, GetAvcCTag(p_stream));
1652 case VLC_CODEC_HEVC:
1653 box_gather(vide, GetHvcCTag(p_stream));
1660 static bo_t *GetTextBox(void)
1662 bo_t *text = box_new("text");
1664 for (int i = 0; i < 6; i++)
1665 bo_add_8(text, 0); // reserved;
1666 bo_add_16be(text, 1); // data-reference-index
1668 bo_add_32be(text, 0); // display flags
1669 bo_add_32be(text, 0); // justification
1670 for (int i = 0; i < 3; i++)
1671 bo_add_16be(text, 0); // back ground color
1673 bo_add_16be(text, 0); // box text
1674 bo_add_16be(text, 0); // box text
1675 bo_add_16be(text, 0); // box text
1676 bo_add_16be(text, 0); // box text
1678 bo_add_64be(text, 0); // reserved
1679 for (int i = 0; i < 3; i++)
1680 bo_add_16be(text, 0xff); // foreground color
1683 bo_add_mem(text, 9, (uint8_t*)"Helvetica");
1688 static bo_t *GetStblBox(sout_mux_t *p_mux, mp4_stream_t *p_stream)
1690 sout_mux_sys_t *p_sys = p_mux->p_sys;
1692 /* sample description */
1693 bo_t *stsd = box_full_new("stsd", 0, 0);
1694 bo_add_32be(stsd, 1);
1695 if (p_stream->fmt.i_cat == AUDIO_ES)
1696 box_gather(stsd, GetSounBox(p_mux, p_stream));
1697 else if (p_stream->fmt.i_cat == VIDEO_ES)
1698 box_gather(stsd, GetVideBox(p_stream));
1699 else if (p_stream->fmt.i_cat == SPU_ES)
1700 box_gather(stsd, GetTextBox());
1702 /* chunk offset table */
1704 if (p_sys->i_pos >= (((uint64_t)0x1) << 32)) {
1705 /* 64 bits version */
1706 p_stream->b_stco64 = true;
1707 stco = box_full_new("co64", 0, 0);
1709 /* 32 bits version */
1710 p_stream->b_stco64 = false;
1711 stco = box_full_new("stco", 0, 0);
1713 bo_add_32be(stco, 0); // entry-count (fixed latter)
1715 /* sample to chunk table */
1716 bo_t *stsc = box_full_new("stsc", 0, 0);
1717 bo_add_32be(stsc, 0); // entry-count (fixed latter)
1719 unsigned i_chunk = 0;
1720 unsigned i_stsc_last_val = 0, i_stsc_entries = 0;
1721 for (unsigned i = 0; i < p_stream->i_entry_count; i_chunk++) {
1722 mp4_entry_t *entry = p_stream->entry;
1725 if (p_stream->b_stco64)
1726 bo_add_64be(stco, entry[i].i_pos);
1728 bo_add_32be(stco, entry[i].i_pos);
1730 for (; i < p_stream->i_entry_count; i++)
1731 if (i >= p_stream->i_entry_count - 1 ||
1732 entry[i].i_pos + entry[i].i_size != entry[i+1].i_pos) {
1737 /* Add entry to the stsc table */
1738 if (i_stsc_last_val != i - i_first) {
1739 bo_add_32be(stsc, 1 + i_chunk); // first-chunk
1740 bo_add_32be(stsc, i - i_first) ; // samples-per-chunk
1741 bo_add_32be(stsc, 1); // sample-descr-index
1742 i_stsc_last_val = i - i_first;
1747 /* Fix stco entry count */
1748 bo_swap_32be(stco, 12, i_chunk);
1749 msg_Dbg(p_mux, "created %d chunks (stco)", i_chunk);
1751 /* Fix stsc entry count */
1752 bo_swap_32be(stsc, 12, i_stsc_entries );
1755 bo_t *stts = box_full_new("stts", 0, 0);
1756 bo_add_32be(stts, 0); // entry-count (fixed latter)
1758 unsigned i_index = 0;
1759 for (unsigned i = 0; i < p_stream->i_entry_count; i_index++) {
1761 mtime_t i_delta = p_stream->entry[i].i_length;
1763 for (; i < p_stream->i_entry_count; ++i)
1764 if (i == p_stream->i_entry_count || p_stream->entry[i].i_length != i_delta)
1767 bo_add_32be(stts, i - i_first); // sample-count
1768 bo_add_32be(stts, (uint64_t)i_delta * p_stream->i_timescale / CLOCK_FREQ); // sample-delta
1770 bo_swap_32be(stts, 12, i_index);
1772 /* composition time handling */
1774 if ( p_stream->b_hasbframes && (ctts = box_full_new("ctts", 0, 0)) )
1776 bo_add_32be(ctts, 0);
1778 for (unsigned i = 0; i < p_stream->i_entry_count; i_index++)
1781 mtime_t i_offset = p_stream->entry[i].i_pts_dts;
1783 for (; i < p_stream->i_entry_count; ++i)
1784 if (i == p_stream->i_entry_count || p_stream->entry[i].i_pts_dts != i_offset)
1787 bo_add_32be(ctts, i - i_first); // sample-count
1788 bo_add_32be(ctts, i_offset * p_stream->i_timescale / CLOCK_FREQ ); // sample-offset
1790 bo_swap_32be(ctts, 12, i_index);
1793 bo_t *stsz = box_full_new("stsz", 0, 0);
1795 for (unsigned i = 0; i < p_stream->i_entry_count; i++)
1798 i_size = p_stream->entry[i].i_size;
1799 else if ( p_stream->entry[i].i_size != i_size )
1805 bo_add_32be(stsz, i_size); // sample-size
1806 bo_add_32be(stsz, p_stream->i_entry_count); // sample-count
1807 if ( i_size == 0 ) // all samples have different size
1809 for (unsigned i = 0; i < p_stream->i_entry_count; i++)
1810 bo_add_32be(stsz, p_stream->entry[i].i_size); // sample-size
1813 /* create stss table */
1816 if ( p_stream->fmt.i_cat == VIDEO_ES || p_stream->fmt.i_cat == AUDIO_ES )
1818 mtime_t i_interval = -1;
1819 for (unsigned i = 0; i < p_stream->i_entry_count; i++)
1821 if ( i_interval != -1 )
1823 i_interval += p_stream->entry[i].i_length + p_stream->entry[i].i_pts_dts;
1824 if ( i_interval < CLOCK_FREQ * 2 )
1828 if (p_stream->entry[i].i_flags & BLOCK_FLAG_TYPE_I) {
1830 stss = box_full_new("stss", 0, 0);
1831 bo_add_32be(stss, 0); /* fixed later */
1833 bo_add_32be(stss, 1 + i);
1841 bo_swap_32be(stss, 12, i_index);
1843 /* Now gather all boxes into stbl */
1844 bo_t *stbl = box_new("stbl");
1846 box_gather(stbl, stsd);
1847 box_gather(stbl, stts);
1849 box_gather(stbl, stss);
1851 box_gather(stbl, ctts);
1852 box_gather(stbl, stsc);
1853 box_gather(stbl, stsz);
1854 p_stream->i_stco_pos = stbl->len + 16;
1855 box_gather(stbl, stco);
1860 static int64_t get_timestamp(void);
1862 static void matrix_apply_rotation(es_format_t *fmt, uint32_t mvhd_matrix[9])
1864 enum video_orientation_t orientation = ORIENT_NORMAL;
1865 if (fmt->i_cat == VIDEO_ES)
1866 orientation = fmt->video.orientation;
1868 #define ATAN(a, b) do { mvhd_matrix[1] = (a) << 16; \
1869 mvhd_matrix[0] = (b) << 16; \
1872 switch (orientation) {
1873 case ORIENT_ROTATED_90: ATAN( 1, 0); break;
1874 case ORIENT_ROTATED_180: ATAN( 0, -1); break;
1875 case ORIENT_ROTATED_270: ATAN( -1, 0); break;
1876 default: ATAN( 0, 1); break;
1879 mvhd_matrix[3] = mvhd_matrix[0] ? 0 : 0x10000;
1880 mvhd_matrix[4] = mvhd_matrix[1] ? 0 : 0x10000;
1883 static bo_t *GetMoovBox(sout_mux_t *p_mux)
1885 sout_mux_sys_t *p_sys = p_mux->p_sys;
1889 uint32_t i_movie_timescale = 90000;
1890 int64_t i_movie_duration = 0;
1891 int64_t i_timestamp = get_timestamp();
1893 moov = box_new("moov");
1895 /* Create general info */
1896 if ( !p_sys->b_fragmented )
1898 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
1899 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
1900 i_movie_duration = __MAX(i_movie_duration, p_stream->i_read_duration);
1902 msg_Dbg(p_mux, "movie duration %"PRId64"s", i_movie_duration / CLOCK_FREQ);
1904 i_movie_duration = i_movie_duration * i_movie_timescale / CLOCK_FREQ;
1907 i_movie_duration = 0;
1909 /* *** add /moov/mvhd *** */
1910 if (!p_sys->b_64_ext) {
1911 mvhd = box_full_new("mvhd", 0, 0);
1912 bo_add_32be(mvhd, i_timestamp); // creation time
1913 bo_add_32be(mvhd, i_timestamp); // modification time
1914 bo_add_32be(mvhd, i_movie_timescale); // timescale
1915 bo_add_32be(mvhd, i_movie_duration); // duration
1917 mvhd = box_full_new("mvhd", 1, 0);
1918 bo_add_64be(mvhd, i_timestamp); // creation time
1919 bo_add_64be(mvhd, i_timestamp); // modification time
1920 bo_add_32be(mvhd, i_movie_timescale); // timescale
1921 bo_add_64be(mvhd, i_movie_duration); // duration
1923 bo_add_32be(mvhd, 0x10000); // rate
1924 bo_add_16be(mvhd, 0x100); // volume
1925 bo_add_16be(mvhd, 0); // reserved
1926 for (int i = 0; i < 2; i++)
1927 bo_add_32be(mvhd, 0); // reserved
1929 uint32_t mvhd_matrix[9] = { 0x10000, 0, 0, 0, 0x10000, 0, 0, 0, 0x40000000 };
1931 for (int i = 0; i < 9; i++)
1932 bo_add_32be(mvhd, mvhd_matrix[i]);// matrix
1933 for (int i = 0; i < 6; i++)
1934 bo_add_32be(mvhd, 0); // pre-defined
1936 /* Next available track id */
1937 bo_add_32be(mvhd, p_sys->i_nb_streams + 1); // next-track-id
1939 box_gather(moov, mvhd);
1941 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++) {
1942 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
1944 mtime_t i_stream_duration;
1945 if ( !p_sys->b_fragmented )
1946 i_stream_duration = p_stream->i_read_duration * i_movie_timescale / CLOCK_FREQ;
1948 i_stream_duration = 0;
1950 /* *** add /moov/trak *** */
1951 bo_t *trak = box_new("trak");
1953 /* *** add /moov/trak/tkhd *** */
1955 if (!p_sys->b_64_ext) {
1957 tkhd = box_full_new("tkhd", 0, 0x0f);
1959 tkhd = box_full_new("tkhd", 0, 1);
1961 bo_add_32be(tkhd, i_timestamp); // creation time
1962 bo_add_32be(tkhd, i_timestamp); // modification time
1963 bo_add_32be(tkhd, p_stream->i_track_id);
1964 bo_add_32be(tkhd, 0); // reserved 0
1965 bo_add_32be(tkhd, i_stream_duration); // duration
1968 tkhd = box_full_new("tkhd", 1, 0x0f);
1970 tkhd = box_full_new("tkhd", 1, 1);
1972 bo_add_64be(tkhd, i_timestamp); // creation time
1973 bo_add_64be(tkhd, i_timestamp); // modification time
1974 bo_add_32be(tkhd, p_stream->i_track_id);
1975 bo_add_32be(tkhd, 0); // reserved 0
1976 bo_add_64be(tkhd, i_stream_duration); // duration
1979 for (int i = 0; i < 2; i++)
1980 bo_add_32be(tkhd, 0); // reserved
1981 bo_add_16be(tkhd, 0); // layer
1982 bo_add_16be(tkhd, 0); // pre-defined
1984 bo_add_16be(tkhd, p_stream->fmt.i_cat == AUDIO_ES ? 0x100 : 0);
1985 bo_add_16be(tkhd, 0); // reserved
1986 matrix_apply_rotation(&p_stream->fmt, mvhd_matrix);
1987 for (int i = 0; i < 9; i++)
1988 bo_add_32be(tkhd, mvhd_matrix[i]); // matrix
1989 if (p_stream->fmt.i_cat == AUDIO_ES) {
1990 bo_add_32be(tkhd, 0); // width (presentation)
1991 bo_add_32be(tkhd, 0); // height(presentation)
1992 } else if (p_stream->fmt.i_cat == VIDEO_ES) {
1993 int i_width = p_stream->fmt.video.i_width << 16;
1994 if (p_stream->fmt.video.i_sar_num > 0 && p_stream->fmt.video.i_sar_den > 0) {
1995 i_width = (int64_t)p_stream->fmt.video.i_sar_num *
1996 ((int64_t)p_stream->fmt.video.i_width << 16) /
1997 p_stream->fmt.video.i_sar_den;
1999 // width (presentation)
2000 bo_add_32be(tkhd, i_width);
2001 // height(presentation)
2002 bo_add_32be(tkhd, p_stream->fmt.video.i_height << 16);
2004 int i_width = 320 << 16;
2006 for (unsigned int i = 0; i < p_sys->i_nb_streams; i++) {
2007 mp4_stream_t *tk = p_sys->pp_streams[i];
2008 if (tk->fmt.i_cat == VIDEO_ES) {
2009 if (tk->fmt.video.i_sar_num > 0 &&
2010 tk->fmt.video.i_sar_den > 0)
2011 i_width = (int64_t)tk->fmt.video.i_sar_num *
2012 ((int64_t)tk->fmt.video.i_width << 16) /
2013 tk->fmt.video.i_sar_den;
2015 i_width = tk->fmt.video.i_width << 16;
2016 i_height = tk->fmt.video.i_height;
2020 bo_add_32be(tkhd, i_width); // width (presentation)
2021 bo_add_32be(tkhd, i_height << 16); // height(presentation)
2024 box_gather(trak, tkhd);
2026 /* *** add /moov/trak/edts and elst */
2027 if ( !p_sys->b_fragmented )
2029 bo_t *edts = box_new("edts");
2030 bo_t *elst = box_full_new("elst", p_sys->b_64_ext ? 1 : 0, 0);
2031 if (p_stream->i_starttime > 0) {
2032 bo_add_32be(elst, 2);
2034 if (p_sys->b_64_ext) {
2035 bo_add_64be(elst, p_stream->i_starttime *
2036 i_movie_timescale / CLOCK_FREQ);
2037 bo_add_64be(elst, -1);
2039 bo_add_32be(elst, p_stream->i_starttime *
2040 i_movie_timescale / CLOCK_FREQ);
2041 bo_add_32be(elst, -1);
2043 bo_add_16be(elst, 1);
2044 bo_add_16be(elst, 0);
2046 bo_add_32be(elst, 1);
2048 if (p_sys->b_64_ext) {
2049 bo_add_64be(elst, p_stream->i_read_duration *
2050 i_movie_timescale / CLOCK_FREQ);
2051 bo_add_64be(elst, 0);
2053 bo_add_32be(elst, p_stream->i_read_duration *
2054 i_movie_timescale / CLOCK_FREQ);
2055 bo_add_32be(elst, 0);
2057 bo_add_16be(elst, 1);
2058 bo_add_16be(elst, 0);
2060 box_gather(edts, elst);
2061 box_gather(trak, edts);
2064 /* *** add /moov/trak/mdia *** */
2065 bo_t *mdia = box_new("mdia");
2069 if (!p_sys->b_64_ext) {
2070 mdhd = box_full_new("mdhd", 0, 0);
2071 bo_add_32be(mdhd, i_timestamp); // creation time
2072 bo_add_32be(mdhd, i_timestamp); // modification time
2073 bo_add_32be(mdhd, p_stream->i_timescale); // timescale
2074 bo_add_32be(mdhd, i_stream_duration); // duration
2076 mdhd = box_full_new("mdhd", 1, 0);
2077 bo_add_64be(mdhd, i_timestamp); // creation time
2078 bo_add_64be(mdhd, i_timestamp); // modification time
2079 bo_add_32be(mdhd, p_stream->i_timescale); // timescale
2080 bo_add_64be(mdhd, i_stream_duration); // duration
2083 if (p_stream->fmt.psz_language) {
2084 char *psz = p_stream->fmt.psz_language;
2085 const iso639_lang_t *pl = NULL;
2086 uint16_t lang = 0x0;
2088 if (strlen(psz) == 2)
2089 pl = GetLang_1(psz);
2090 else if (strlen(psz) == 3) {
2091 pl = GetLang_2B(psz);
2092 if (!strcmp(pl->psz_iso639_1, "??"))
2093 pl = GetLang_2T(psz);
2096 if (pl && strcmp(pl->psz_iso639_1, "??"))
2097 lang = ((pl->psz_iso639_2T[0] - 0x60) << 10) |
2098 ((pl->psz_iso639_2T[1] - 0x60) << 5) |
2099 ((pl->psz_iso639_2T[2] - 0x60));
2100 bo_add_16be(mdhd, lang); // language
2102 bo_add_16be(mdhd, 0 ); // language
2103 bo_add_16be(mdhd, 0 ); // predefined
2104 box_gather(mdia, mdhd);
2106 /* handler reference */
2107 bo_t *hdlr = box_full_new("hdlr", 0, 0);
2110 bo_add_fourcc(hdlr, "mhlr"); // media handler
2112 bo_add_32be(hdlr, 0);
2114 if (p_stream->fmt.i_cat == AUDIO_ES)
2115 bo_add_fourcc(hdlr, "soun");
2116 else if (p_stream->fmt.i_cat == VIDEO_ES)
2117 bo_add_fourcc(hdlr, "vide");
2118 else if (p_stream->fmt.i_cat == SPU_ES)
2119 bo_add_fourcc(hdlr, "text");
2121 bo_add_32be(hdlr, 0); // reserved
2122 bo_add_32be(hdlr, 0); // reserved
2123 bo_add_32be(hdlr, 0); // reserved
2126 bo_add_8(hdlr, 12); /* Pascal string for .mov */
2128 if (p_stream->fmt.i_cat == AUDIO_ES)
2129 bo_add_mem(hdlr, 12, (uint8_t*)"SoundHandler");
2130 else if (p_stream->fmt.i_cat == VIDEO_ES)
2131 bo_add_mem(hdlr, 12, (uint8_t*)"VideoHandler");
2133 bo_add_mem(hdlr, 12, (uint8_t*)"Text Handler");
2136 bo_add_8(hdlr, 0); /* asciiz string for .mp4, yes that's BRAIN DAMAGED F**K MP4 */
2138 box_gather(mdia, hdlr);
2141 bo_t *minf = box_new("minf");
2144 if (p_stream->fmt.i_cat == AUDIO_ES) {
2147 smhd = box_full_new("smhd", 0, 0);
2148 bo_add_16be(smhd, 0); // balance
2149 bo_add_16be(smhd, 0); // reserved
2151 box_gather(minf, smhd);
2152 } else if (p_stream->fmt.i_cat == VIDEO_ES) {
2155 vmhd = box_full_new("vmhd", 0, 1);
2156 bo_add_16be(vmhd, 0); // graphicsmode
2157 for (int i = 0; i < 3; i++)
2158 bo_add_16be(vmhd, 0); // opcolor
2160 box_gather(minf, vmhd);
2161 } else if (p_stream->fmt.i_cat == SPU_ES) {
2162 bo_t *gmhd = box_new("gmhd");
2163 bo_t *gmin = box_full_new("gmin", 0, 1);
2165 bo_add_16be(gmin, 0); // graphicsmode
2166 for (int i = 0; i < 3; i++)
2167 bo_add_16be(gmin, 0); // opcolor
2168 bo_add_16be(gmin, 0); // balance
2169 bo_add_16be(gmin, 0); // reserved
2171 box_gather(gmhd, gmin);
2173 box_gather(minf, gmhd);
2177 bo_t *dinf = box_new("dinf");
2178 bo_t *dref = box_full_new("dref", 0, 0);
2179 bo_add_32be(dref, 1);
2180 bo_t *url = box_full_new("url ", 0, 0x01);
2181 box_gather(dref, url);
2182 box_gather(dinf, dref);
2184 /* append dinf to mdia */
2185 box_gather(minf, dinf);
2189 if ( p_sys->b_fragmented )
2191 uint32_t i_backup = p_stream->i_entry_count;
2192 p_stream->i_entry_count = 0;
2193 stbl = GetStblBox(p_mux, p_stream);
2194 p_stream->i_entry_count = i_backup;
2197 stbl = GetStblBox(p_mux, p_stream);
2199 /* append stbl to minf */
2200 p_stream->i_stco_pos += minf->len;
2201 box_gather(minf, stbl);
2203 /* append minf to mdia */
2204 p_stream->i_stco_pos += mdia->len;
2205 box_gather(mdia, minf);
2207 /* append mdia to trak */
2208 p_stream->i_stco_pos += trak->len;
2209 box_gather(trak, mdia);
2211 /* append trak to moov */
2212 p_stream->i_stco_pos += moov->len;
2213 box_gather(moov, trak);
2216 /* Add user data tags */
2217 box_gather(moov, GetUdtaTag(p_mux));
2219 if ( p_sys->b_fragmented )
2221 bo_t *mvex = box_new("mvex");
2222 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++)
2224 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
2226 /* Try to find some defaults */
2227 if ( p_stream->i_entry_count )
2229 // FIXME: find highest occurence
2230 p_stream->i_trex_length = p_stream->entry[0].i_length;
2231 p_stream->i_trex_size = p_stream->entry[0].i_size;
2234 /* *** add /mvex/trex *** */
2235 bo_t *trex = box_full_new("trex", 0, 0);
2236 bo_add_32be(trex, p_stream->i_track_id);
2237 bo_add_32be(trex, 1); // sample desc index
2238 bo_add_32be(trex, (uint64_t)p_stream->i_trex_length * p_stream->i_timescale / CLOCK_FREQ); // sample duration
2239 bo_add_32be(trex, p_stream->i_trex_size); // sample size
2240 bo_add_32be(trex, 0); // sample flags
2241 box_gather(mvex, trex);
2243 box_gather(moov, mvex);
2250 /****************************************************************************/
2252 static bo_t *box_new(const char *fcc)
2254 bo_t *box = malloc(sizeof(*box));
2260 bo_add_32be (box, 0);
2261 bo_add_fourcc(box, fcc);
2266 static bo_t *box_full_new(const char *fcc, uint8_t v, uint32_t f)
2268 bo_t *box = box_new(fcc);
2273 bo_add_24be (box, f);
2278 static void box_free(bo_t *box)
2280 block_Release(box->b);
2284 static void box_fix(bo_t *box)
2286 box->b->p_buffer[0] = box->len >> 24;
2287 box->b->p_buffer[1] = box->len >> 16;
2288 box->b->p_buffer[2] = box->len >> 8;
2289 box->b->p_buffer[3] = box->len;
2292 static void box_gather (bo_t *box, bo_t *box2)
2295 box->b = block_Realloc(box->b, 0, box->len + box2->len);
2296 memcpy(&box->b->p_buffer[box->len], box2->b->p_buffer, box2->len);
2297 box->len += box2->len;
2301 static void box_send(sout_mux_t *p_mux, bo_t *box)
2303 box->b->i_buffer = box->len;
2304 sout_AccessOutWrite(p_mux->p_access, box->b);
2308 static int64_t get_timestamp(void)
2310 int64_t i_timestamp = time(NULL);
2312 i_timestamp += 2082844800; // MOV/MP4 start date is 1/1/1904
2313 // 208284480 is (((1970 - 1904) * 365) + 17) * 24 * 60 * 60
2318 /***************************************************************************
2320 ****************************************************************************/
2321 #define FRAGMENT_LENGTH (CLOCK_FREQ * 3/2)
2323 #define ENQUEUE_ENTRY(object, entry) \
2326 object.p_last->p_next = entry;\
2327 object.p_last = entry;\
2328 if (!object.p_first)\
2329 object.p_first = entry;\
2332 #define DEQUEUE_ENTRY(object, entry) \
2334 entry = object.p_first;\
2335 if (object.p_last == entry)\
2336 object.p_last = NULL;\
2337 object.p_first = object.p_first->p_next;\
2338 entry->p_next = NULL;\
2341 /* Creates mfra/traf index entries */
2342 static void AddKeyframeEntry(mp4_stream_t *p_stream, const uint64_t i_moof_pos,
2343 const uint8_t i_traf, const uint32_t i_sample,
2344 const mtime_t i_time)
2346 /* alloc or realloc */
2347 mp4_fragindex_t *p_entries = p_stream->p_indexentries;
2348 if (p_stream->i_indexentries >= p_stream->i_indexentriesmax)
2350 p_stream->i_indexentriesmax += 256;
2351 p_entries = xrealloc(p_stream->p_indexentries,
2352 p_stream->i_indexentriesmax * sizeof(mp4_fragindex_t));
2353 if (p_entries) /* realloc can fail */
2354 p_stream->p_indexentries = p_entries;
2357 mtime_t i_last_entry_time;
2358 if (p_stream->i_indexentries)
2359 i_last_entry_time = p_stream->p_indexentries[p_stream->i_indexentries - 1].i_time;
2361 i_last_entry_time = 0;
2363 if (p_entries && i_time - i_last_entry_time >= CLOCK_FREQ * 2)
2365 mp4_fragindex_t *p_indexentry = &p_stream->p_indexentries[p_stream->i_indexentries];
2366 p_indexentry->i_time = i_time;
2367 p_indexentry->i_moofoffset = i_moof_pos;
2368 p_indexentry->i_sample = i_sample;
2369 p_indexentry->i_traf = i_traf;
2370 p_indexentry->i_trun = 1;
2371 p_stream->i_indexentries++;
2375 /* Creates moof box and traf/trun information.
2376 * Single run per traf is absolutely not optimal as interleaving should be done
2377 * using runs and not limiting moof size, but creating an relative offset only
2378 * requires base_offset_is_moof and then comply to late iso brand spec which
2379 * breaks clients. */
2380 static bo_t *GetMoofBox(sout_mux_t *p_mux, size_t *pi_mdat_total_size,
2381 mtime_t i_barrier_time, const uint64_t i_write_pos)
2383 sout_mux_sys_t *p_sys = p_mux->p_sys;
2386 size_t i_fixupoffset = 0;
2388 *pi_mdat_total_size = 0;
2390 moof = box_new("moof");
2392 /* *** add /moof/mfhd *** */
2394 mfhd = box_full_new("mfhd", 0, 0);
2395 bo_add_32be(mfhd, p_sys->i_mfhd_sequence++); // sequence number
2397 box_gather(moof, mfhd);
2399 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++)
2401 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
2403 /* *** add /moof/traf *** */
2404 bo_t *traf = box_new("traf");
2406 uint32_t i_sample = 0;
2407 mtime_t i_time = p_stream->i_written_duration;
2408 bool b_allsamesize = true;
2409 bool b_allsamelength = true;
2410 if ( p_stream->read.p_first )
2412 mp4_fragentry_t *p_entry = p_stream->read.p_first->p_next;
2413 while (p_entry && (b_allsamelength || b_allsamesize))
2415 /* compare against queue head */
2416 b_allsamelength &= ( p_entry->p_block->i_length == p_stream->read.p_first->p_block->i_length );
2417 b_allsamesize &= ( p_entry->p_block->i_buffer == p_stream->read.p_first->p_block->i_buffer );
2418 p_entry = p_entry->p_next;
2422 uint32_t i_tfhd_flags = 0x0;
2423 if (p_stream->read.p_first)
2425 /* Current segment have all same duration value, different than trex's default */
2426 if (b_allsamelength &&
2427 p_stream->read.p_first->p_block->i_length != p_stream->i_trex_length &&
2428 p_stream->read.p_first->p_block->i_length)
2429 i_tfhd_flags |= MP4_TFHD_DFLT_SAMPLE_DURATION;
2431 /* Current segment have all same size value, different than trex's default */
2432 if (b_allsamesize &&
2433 p_stream->read.p_first->p_block->i_buffer != p_stream->i_trex_size &&
2434 p_stream->read.p_first->p_block->i_buffer)
2435 i_tfhd_flags |= MP4_TFHD_DFLT_SAMPLE_SIZE;
2439 /* We have no samples */
2440 i_tfhd_flags |= MP4_TFHD_DURATION_IS_EMPTY;
2443 /* *** add /moof/traf/tfhd *** */
2444 bo_t *tfhd = box_full_new("tfhd", 0, i_tfhd_flags);
2445 bo_add_32be(tfhd, p_stream->i_track_id);
2447 /* set the local sample duration default */
2448 if (i_tfhd_flags & MP4_TFHD_DFLT_SAMPLE_DURATION)
2449 bo_add_32be(tfhd, p_stream->read.p_first->p_block->i_length * p_stream->i_timescale / CLOCK_FREQ);
2451 /* set the local sample size default */
2452 if (i_tfhd_flags & MP4_TFHD_DFLT_SAMPLE_SIZE)
2453 bo_add_32be(tfhd, p_stream->read.p_first->p_block->i_buffer);
2455 box_gather(traf, tfhd);
2457 /* *** add /moof/traf/tfdt *** */
2458 bo_t *tfdt = box_full_new("tfdt", 1, 0);
2459 bo_add_64be(tfdt, p_stream->i_written_duration * p_stream->i_timescale / CLOCK_FREQ );
2460 box_gather(traf, tfdt);
2462 /* *** add /moof/traf/trun *** */
2463 if (p_stream->read.p_first)
2465 uint32_t i_trun_flags = 0x0;
2467 if (p_stream->b_hasiframes && !(p_stream->read.p_first->p_block->i_flags & BLOCK_FLAG_TYPE_I))
2468 i_trun_flags |= MP4_TRUN_FIRST_FLAGS;
2470 if (!b_allsamelength ||
2471 ( !(i_tfhd_flags & MP4_TFHD_DFLT_SAMPLE_DURATION) && p_stream->i_trex_length == 0 ))
2472 i_trun_flags |= MP4_TRUN_SAMPLE_DURATION;
2474 if (!b_allsamesize ||
2475 ( !(i_tfhd_flags & MP4_TFHD_DFLT_SAMPLE_SIZE) && p_stream->i_trex_size == 0 ))
2476 i_trun_flags |= MP4_TRUN_SAMPLE_SIZE;
2478 if (p_stream->b_hasbframes)
2479 i_trun_flags |= MP4_TRUN_SAMPLE_TIME_OFFSET;
2481 if (i_fixupoffset == 0)
2482 i_trun_flags |= MP4_TRUN_DATA_OFFSET;
2484 bo_t *trun = box_full_new("trun", 0, i_trun_flags);
2487 uint32_t i_entry_count = 0;
2488 mtime_t i_run_time = p_stream->i_written_duration;
2489 mp4_fragentry_t *p_entry = p_stream->read.p_first;
2492 if ( i_barrier_time && i_run_time + p_entry->p_block->i_length > i_barrier_time )
2495 i_run_time += p_entry->p_block->i_length;
2496 p_entry = p_entry->p_next;
2498 bo_add_32be(trun, i_entry_count); // sample count
2500 if (i_trun_flags & MP4_TRUN_DATA_OFFSET)
2502 i_fixupoffset = moof->len + traf->len + trun->len;
2503 bo_add_32be(trun, 0xdeadbeef); // data offset
2506 if (i_trun_flags & MP4_TRUN_FIRST_FLAGS)
2507 bo_add_32be(trun, 1<<16); // flag as non keyframe
2509 while(p_stream->read.p_first && i_entry_count)
2511 DEQUEUE_ENTRY(p_stream->read, p_entry);
2513 if (i_trun_flags & MP4_TRUN_SAMPLE_DURATION)
2514 bo_add_32be(trun, p_entry->p_block->i_length * p_stream->i_timescale / CLOCK_FREQ); // sample duration
2516 if (i_trun_flags & MP4_TRUN_SAMPLE_SIZE)
2517 bo_add_32be(trun, p_entry->p_block->i_buffer); // sample size
2519 if (i_trun_flags & MP4_TRUN_SAMPLE_TIME_OFFSET)
2521 uint32_t i_diff = 0;
2522 if ( p_entry->p_block->i_dts > VLC_TS_INVALID &&
2523 p_entry->p_block->i_pts > p_entry->p_block->i_dts )
2525 i_diff = p_entry->p_block->i_pts - p_entry->p_block->i_dts;
2527 bo_add_32be(trun, i_diff * p_stream->i_timescale / CLOCK_FREQ); // ctts
2530 *pi_mdat_total_size += p_entry->p_block->i_buffer;
2532 ENQUEUE_ENTRY(p_stream->towrite, p_entry);
2536 /* Add keyframe entry if needed */
2537 if (p_stream->b_hasiframes && (p_entry->p_block->i_flags & BLOCK_FLAG_TYPE_I) &&
2538 (p_stream->fmt.i_cat == VIDEO_ES || p_stream->fmt.i_cat == AUDIO_ES))
2540 AddKeyframeEntry(p_stream, i_write_pos, i_trak, i_sample, i_time);
2543 i_time += p_entry->p_block->i_length;
2546 box_gather(traf, trun);
2549 box_gather(moof, traf);
2554 /* do tfhd base data offset fixup */
2557 /* mdat will follow moof */
2558 SetDWBE(moof->b->p_buffer + i_fixupoffset, moof->len + 8);
2561 /* set iframe flag, so the streaming server always starts from moof */
2562 moof->b->i_flags |= BLOCK_FLAG_TYPE_I;
2567 static void WriteFragmentMDAT(sout_mux_t *p_mux, size_t i_total_size)
2569 sout_mux_sys_t *p_sys = p_mux->p_sys;
2571 /* Now add mdat header */
2572 bo_t *mdat = box_new("mdat");
2573 /* force update of real size */
2574 mdat->b->i_buffer = mdat->len;
2575 assert(mdat->len==8);
2576 mdat->len += i_total_size;
2578 p_sys->i_pos += mdat->b->i_buffer;
2579 /* only write header */
2580 sout_AccessOutWrite(p_mux->p_access, mdat->b);
2582 /* Header and its size are written and good, now write content */
2583 for (unsigned int i_trak = 0; i_trak < p_sys->i_nb_streams; i_trak++)
2585 mp4_stream_t *p_stream = p_sys->pp_streams[i_trak];
2587 while(p_stream->towrite.p_first)
2589 mp4_fragentry_t *p_entry = p_stream->towrite.p_first;
2590 p_sys->i_pos += p_entry->p_block->i_buffer;
2591 p_stream->i_written_duration += p_entry->p_block->i_length;
2593 p_entry->p_block->i_flags &= ~BLOCK_FLAG_TYPE_I; // clear flag for http stream
2594 sout_AccessOutWrite(p_mux->p_access, p_entry->p_block);
2596 p_stream->towrite.p_first = p_entry->p_next;
2598 if (!p_stream->towrite.p_first)
2599 p_stream->towrite.p_last = NULL;
2604 static bo_t *GetMfraBox(sout_mux_t *p_mux)
2606 sout_mux_sys_t *p_sys = (sout_mux_sys_t*) p_mux->p_sys;
2608 for (unsigned int i = 0; i < p_sys->i_nb_streams; i++)
2610 mp4_stream_t *p_stream = p_sys->pp_streams[i];
2611 if (p_stream->i_indexentries)
2613 bo_t *tfra = box_full_new("tfra", 0, 0x0);
2614 if (!tfra) continue;
2615 bo_add_32be(tfra, p_stream->i_track_id);
2616 bo_add_32be(tfra, 0x3); // reserved + lengths (1,1,4)=>(0,0,3)
2617 bo_add_32be(tfra, p_stream->i_indexentries);
2618 for(uint32_t i_index=0; i_index<p_stream->i_indexentries; i_index++)
2620 const mp4_fragindex_t *p_indexentry = &p_stream->p_indexentries[i_index];
2621 bo_add_32be(tfra, p_indexentry->i_time);
2622 bo_add_32be(tfra, p_indexentry->i_moofoffset);
2623 assert(sizeof(p_indexentry->i_traf)==1); /* guard against sys changes */
2624 assert(sizeof(p_indexentry->i_trun)==1);
2625 assert(sizeof(p_indexentry->i_sample)==4);
2626 bo_add_8(tfra, p_indexentry->i_traf);
2627 bo_add_8(tfra, p_indexentry->i_trun);
2628 bo_add_32be(tfra, p_indexentry->i_sample);
2631 if (!mfra && !(mfra = box_new("mfra")))
2637 box_gather(mfra,tfra);
2643 static void FlushHeader(sout_mux_t *p_mux)
2645 sout_mux_sys_t *p_sys = (sout_mux_sys_t*) p_mux->p_sys;
2647 /* Now add ftyp header */
2648 bo_t *ftyp = box_new("ftyp");
2649 bo_add_fourcc(ftyp, "isom");
2650 bo_add_32be (ftyp, 0); // minor version
2653 bo_t *moov = GetMoovBox(p_mux);
2655 /* merge into a single block */
2656 box_gather(ftyp, moov);
2658 /* add header flag for streaming server */
2659 ftyp->b->i_flags |= BLOCK_FLAG_HEADER;
2660 p_sys->i_pos += ftyp->len;
2661 box_send(p_mux, ftyp);
2662 p_sys->b_header_sent = true;
2665 static int OpenFrag(vlc_object_t *p_this)
2667 sout_mux_t *p_mux = (sout_mux_t*) p_this;
2668 sout_mux_sys_t *p_sys = malloc(sizeof(sout_mux_sys_t));
2672 p_mux->p_sys = (sout_mux_sys_t *) p_sys;
2673 p_mux->pf_control = Control;
2674 p_mux->pf_addstream = AddStream;
2675 p_mux->pf_delstream = DelStream;
2676 p_mux->pf_mux = MuxFrag;
2679 p_sys->b_mov = false;
2680 p_sys->b_3gp = false;
2681 p_sys->b_64_ext = false;
2685 p_sys->i_nb_streams = 0;
2686 p_sys->pp_streams = NULL;
2687 p_sys->i_mdat_pos = 0;
2688 p_sys->i_read_duration = 0;
2689 p_sys->i_written_duration= 0;
2691 p_sys->b_header_sent = false;
2692 p_sys->b_fragmented = true;
2693 p_sys->i_mfhd_sequence = 1;
2698 static void WriteFragments(sout_mux_t *p_mux, bool b_flush)
2700 sout_mux_sys_t *p_sys = (sout_mux_sys_t*) p_mux->p_sys;
2702 mtime_t i_barrier_time = p_sys->i_written_duration + FRAGMENT_LENGTH;
2703 size_t i_mdat_size = 0;
2704 bool b_has_samples = false;
2706 for (unsigned int i = 0; i < p_sys->i_nb_streams; i++)
2708 const mp4_stream_t *p_stream = p_sys->pp_streams[i];
2709 if (p_stream->read.p_first)
2711 b_has_samples = true;
2713 /* set a barrier so we try to align to keyframe */
2714 if (p_stream->b_hasiframes &&
2715 p_stream->i_last_iframe_time > p_stream->i_written_duration &&
2716 (p_stream->fmt.i_cat == VIDEO_ES ||
2717 p_stream->fmt.i_cat == AUDIO_ES) )
2719 i_barrier_time = __MIN(i_barrier_time, p_stream->i_last_iframe_time);
2724 if (!p_sys->b_header_sent)
2728 moof = GetMoofBox(p_mux, &i_mdat_size, (b_flush)?0:i_barrier_time, p_sys->i_pos);
2730 if (moof && i_mdat_size == 0)
2732 block_Release(moof->b);
2738 msg_Dbg(p_mux, "writing moof @ %"PRId64, p_sys->i_pos);
2739 p_sys->i_pos += moof->len;
2740 assert(moof->b->i_flags & BLOCK_FLAG_TYPE_I); /* http sout */
2741 box_send(p_mux, moof);
2742 msg_Dbg(p_mux, "writing mdat @ %"PRId64, p_sys->i_pos);
2743 WriteFragmentMDAT(p_mux, i_mdat_size);
2745 /* update iframe point */
2746 for (unsigned int i = 0; i < p_sys->i_nb_streams; i++)
2748 mp4_stream_t *p_stream = p_sys->pp_streams[i];
2749 p_stream->i_last_iframe_time = 0;
2754 /* Do an entry length fixup using only its own info.
2755 * This is the end boundary case. */
2756 static void LengthLocalFixup(sout_mux_t *p_mux, const mp4_stream_t *p_stream, block_t *p_entrydata)
2758 if ( p_stream->fmt.i_cat == VIDEO_ES )
2760 p_entrydata->i_length = CLOCK_FREQ *
2761 p_stream->fmt.video.i_frame_rate_base /
2762 p_stream->fmt.video.i_frame_rate;
2763 msg_Dbg(p_mux, "video track %d fixup to %"PRId64" for sample %u",
2764 p_stream->i_track_id, p_entrydata->i_length, p_stream->i_entry_count - 1);
2766 else if (p_stream->fmt.i_cat == AUDIO_ES &&
2767 p_stream->fmt.audio.i_rate &&
2768 p_entrydata->i_nb_samples)
2770 p_entrydata->i_length = CLOCK_FREQ * p_entrydata->i_nb_samples /
2771 p_stream->fmt.audio.i_rate;
2772 msg_Dbg(p_mux, "audio track %d fixup to %"PRId64" for sample %u",
2773 p_stream->i_track_id, p_entrydata->i_length, p_stream->i_entry_count - 1);
2777 msg_Warn(p_mux, "unknown length for track %d sample %u",
2778 p_stream->i_track_id, p_stream->i_entry_count - 1);
2779 p_entrydata->i_length = 1;
2783 static void CleanupFrag(sout_mux_sys_t *p_sys)
2785 for (unsigned int i = 0; i < p_sys->i_nb_streams; i++)
2787 mp4_stream_t *p_stream = p_sys->pp_streams[i];
2788 if (p_stream->p_held_entry)
2790 block_Release(p_stream->p_held_entry->p_block);
2791 free(p_stream->p_held_entry);
2793 while(p_stream->read.p_first)
2795 mp4_fragentry_t *p_next = p_stream->read.p_first->p_next;
2796 block_Release(p_stream->read.p_first->p_block);
2797 free(p_stream->read.p_first);
2798 p_stream->read.p_first = p_next;
2800 while(p_stream->towrite.p_first)
2802 mp4_fragentry_t *p_next = p_stream->towrite.p_first->p_next;
2803 block_Release(p_stream->towrite.p_first->p_block);
2804 free(p_stream->towrite.p_first);
2805 p_stream->towrite.p_first = p_next;
2807 free(p_stream->p_indexentries);
2812 static void CloseFrag(vlc_object_t *p_this)
2814 sout_mux_t *p_mux = (sout_mux_t *) p_this;
2815 sout_mux_sys_t *p_sys = (sout_mux_sys_t*) p_mux->p_sys;
2817 /* Flush remaining entries */
2818 for (unsigned int i = 0; i < p_sys->i_nb_streams; i++)
2820 mp4_stream_t *p_stream = p_sys->pp_streams[i];
2821 if (p_stream->p_held_entry)
2823 if (p_stream->p_held_entry->p_block->i_length < 1)
2824 LengthLocalFixup(p_mux, p_stream, p_stream->p_held_entry->p_block);
2825 ENQUEUE_ENTRY(p_stream->read, p_stream->p_held_entry);
2826 p_stream->p_held_entry = NULL;
2830 /* and force creating a fragment from it */
2831 WriteFragments(p_mux, true);
2833 /* Write indexes, but only for non streamed content
2834 as they refer to moof by absolute position */
2835 if (!strcmp(p_mux->psz_mux, "mp4frag"))
2837 bo_t *mfra = GetMfraBox(p_mux);
2840 bo_t *mfro = box_full_new("mfro", 0, 0x0);
2844 bo_add_32be(mfro, mfra->len + MP4_MFRO_BOXSIZE);
2845 box_gather(mfra, mfro);
2847 box_send(p_mux, mfra);
2854 static int MuxFrag(sout_mux_t *p_mux)
2856 sout_mux_sys_t *p_sys = (sout_mux_sys_t*) p_mux->p_sys;
2858 int i_stream = sout_MuxGetStream(p_mux, 1, NULL);
2861 sout_input_t *p_input = p_mux->pp_inputs[i_stream];
2862 mp4_stream_t *p_stream = (mp4_stream_t*) p_input->p_sys;
2863 block_t *p_currentblock = block_FifoGet(p_input->p_fifo);
2865 /* do block conversion */
2866 switch(p_stream->fmt.i_codec)
2868 case VLC_CODEC_H264:
2869 case VLC_CODEC_HEVC:
2870 p_currentblock = ConvertFromAnnexB(p_currentblock);
2872 case VLC_CODEC_SUBT:
2873 p_currentblock = ConvertSUBT(p_currentblock);
2879 if( !p_currentblock )
2882 /* If we have a previous entry for outgoing queue */
2883 if (p_stream->p_held_entry)
2885 block_t *p_heldblock = p_stream->p_held_entry->p_block;
2887 /* Fix previous block length from current */
2888 if (p_heldblock->i_length < 1)
2891 /* Fix using dts if not on a boundary */
2892 if ((p_currentblock->i_flags & BLOCK_FLAG_DISCONTINUITY) == 0)
2893 p_heldblock->i_length = p_currentblock->i_dts - p_heldblock->i_dts;
2895 if (p_heldblock->i_length < 1)
2896 LengthLocalFixup(p_mux, p_stream, p_heldblock);
2900 ENQUEUE_ENTRY(p_stream->read, p_stream->p_held_entry);
2901 p_stream->p_held_entry = NULL;
2903 if (p_stream->b_hasiframes && (p_heldblock->i_flags & BLOCK_FLAG_TYPE_I) &&
2904 p_stream->i_read_duration - p_sys->i_written_duration < FRAGMENT_LENGTH)
2906 /* Flag the last iframe time, we'll use it as boundary so it will start
2908 p_stream->i_last_iframe_time = p_stream->i_read_duration;
2911 /* update buffered time */
2912 p_stream->i_read_duration += __MAX(0, p_heldblock->i_length);
2916 /* set temp entry */
2917 p_stream->p_held_entry = malloc(sizeof(mp4_fragentry_t));
2918 if (unlikely(!p_stream->p_held_entry))
2921 p_stream->p_held_entry->p_block = p_currentblock;
2922 p_stream->p_held_entry->i_run = p_stream->i_current_run;
2923 p_stream->p_held_entry->p_next = NULL;
2925 if (p_stream->fmt.i_cat == VIDEO_ES )
2927 if (!p_stream->b_hasiframes && (p_currentblock->i_flags & BLOCK_FLAG_TYPE_I))
2928 p_stream->b_hasiframes = true;
2930 if (!p_stream->b_hasbframes && p_currentblock->i_dts > VLC_TS_INVALID &&
2931 p_currentblock->i_pts > p_currentblock->i_dts)
2932 p_stream->b_hasbframes = true;
2935 /* Update the global fragment/media duration */
2936 mtime_t i_min_read_duration = p_stream->i_read_duration;
2937 mtime_t i_min_written_duration = p_stream->i_written_duration;
2938 for (unsigned int i=0; i<p_sys->i_nb_streams; i++)
2940 const mp4_stream_t *p_s = p_sys->pp_streams[i];
2941 if (p_s->fmt.i_cat != VIDEO_ES && p_s->fmt.i_cat != AUDIO_ES)
2943 if (p_s->i_read_duration < i_min_read_duration)
2944 i_min_read_duration = p_s->i_read_duration;
2946 if (p_s->i_written_duration < i_min_written_duration)
2947 i_min_written_duration = p_s->i_written_duration;
2949 p_sys->i_read_duration = i_min_read_duration;
2950 p_sys->i_written_duration = i_min_written_duration;
2952 /* we have prerolled enough to know all streams, and have enough date to create a fragment */
2953 if (p_stream->read.p_first && p_sys->i_read_duration - p_sys->i_written_duration >= FRAGMENT_LENGTH)
2954 WriteFragments(p_mux, false);