1 /*****************************************************************************
2 * livehttp.c: Live HTTP Streaming
3 *****************************************************************************
4 * Copyright © 2001, 2002, 2013 VLC authors and VideoLAN
5 * Copyright © 2009-2010 by Keary Griffin
7 * Authors: Keary Griffin <kearygriffin at gmail.com>
8 * Ilkka Ollakka <ileoo 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 <sys/types.h>
41 #include <vlc_common.h>
42 #include <vlc_plugin.h>
44 #include <vlc_block.h>
46 #include <vlc_strings.h>
47 #include <vlc_charset.h>
50 #include <vlc_gcrypt.h>
55 # define O_LARGEFILE 0
58 #define STR_ENDLIST "#EXT-X-ENDLIST\n"
60 #define MAX_RENAME_RETRIES 10
62 /*****************************************************************************
64 *****************************************************************************/
65 static int Open ( vlc_object_t * );
66 static void Close( vlc_object_t * );
68 #define SOUT_CFG_PREFIX "sout-livehttp-"
69 #define SEGLEN_TEXT N_("Segment length")
70 #define SEGLEN_LONGTEXT N_("Length of TS stream segments")
72 #define SPLITANYWHERE_TEXT N_("Split segments anywhere")
73 #define SPLITANYWHERE_LONGTEXT N_("Don't require a keyframe before splitting "\
74 "a segment. Needed for audio only.")
76 #define NUMSEGS_TEXT N_("Number of segments")
77 #define NUMSEGS_LONGTEXT N_("Number of segments to include in index")
79 #define NOCACHE_TEXT N_("Allow cache")
80 #define NOCACHE_LONGTEXT N_("Add EXT-X-ALLOW-CACHE:NO directive in playlist-file if this is disabled")
82 #define INDEX_TEXT N_("Index file")
83 #define INDEX_LONGTEXT N_("Path to the index file to create")
85 #define INDEXURL_TEXT N_("Full URL to put in index file")
86 #define INDEXURL_LONGTEXT N_("Full URL to put in index file. "\
87 "Use #'s to represent segment number")
89 #define DELSEGS_TEXT N_("Delete segments")
90 #define DELSEGS_LONGTEXT N_("Delete segments when they are no longer needed")
92 #define RATECONTROL_TEXT N_("Use muxers rate control mechanism")
94 #define KEYURI_TEXT N_("AES key URI to place in playlist")
96 #define KEYFILE_TEXT N_("AES key file")
97 #define KEYFILE_LONGTEXT N_("File containing the 16 bytes encryption key")
99 #define KEYLOADFILE_TEXT N_("File where vlc reads key-uri and keyfile-location")
100 #define KEYLOADFILE_LONGTEXT N_("File is read when segment starts and is assumet to be in format: "\
101 "key-uri\\nkey-file. File is read on the segment opening and "\
102 "values are used on that segment.")
104 #define RANDOMIV_TEXT N_("Use randomized IV for encryption")
105 #define RANDOMIV_LONGTEXT N_("Generate IV instead using segment-number as IV")
108 set_description( N_("HTTP Live streaming output") )
109 set_shortname( N_("LiveHTTP" ))
110 add_shortcut( "livehttp" )
111 set_capability( "sout access", 0 )
112 set_category( CAT_SOUT )
113 set_subcategory( SUBCAT_SOUT_ACO )
114 add_integer( SOUT_CFG_PREFIX "seglen", 10, SEGLEN_TEXT, SEGLEN_LONGTEXT, false )
115 add_integer( SOUT_CFG_PREFIX "numsegs", 0, NUMSEGS_TEXT, NUMSEGS_LONGTEXT, false )
116 add_bool( SOUT_CFG_PREFIX "splitanywhere", false,
117 SPLITANYWHERE_TEXT, SPLITANYWHERE_LONGTEXT, true )
118 add_bool( SOUT_CFG_PREFIX "delsegs", true,
119 DELSEGS_TEXT, DELSEGS_LONGTEXT, true )
120 add_bool( SOUT_CFG_PREFIX "ratecontrol", false,
121 RATECONTROL_TEXT, RATECONTROL_TEXT, true )
122 add_bool( SOUT_CFG_PREFIX "caching", false,
123 NOCACHE_TEXT, NOCACHE_LONGTEXT, true )
124 add_bool( SOUT_CFG_PREFIX "generate-iv", false,
125 RANDOMIV_TEXT, RANDOMIV_LONGTEXT, true )
126 add_string( SOUT_CFG_PREFIX "index", NULL,
127 INDEX_TEXT, INDEX_LONGTEXT, false )
128 add_string( SOUT_CFG_PREFIX "index-url", NULL,
129 INDEXURL_TEXT, INDEXURL_LONGTEXT, false )
130 add_string( SOUT_CFG_PREFIX "key-uri", NULL,
131 KEYURI_TEXT, KEYURI_TEXT, true )
132 add_loadfile( SOUT_CFG_PREFIX "key-file", NULL,
133 KEYFILE_TEXT, KEYFILE_LONGTEXT, true )
134 add_loadfile( SOUT_CFG_PREFIX "key-loadfile", NULL,
135 KEYLOADFILE_TEXT, KEYLOADFILE_LONGTEXT, true )
136 set_callbacks( Open, Close )
140 /*****************************************************************************
141 * Exported prototypes
142 *****************************************************************************/
143 static const char *const ppsz_sout_options[] = {
159 static ssize_t Write( sout_access_out_t *, block_t * );
160 static int Seek ( sout_access_out_t *, off_t );
161 static int Control( sout_access_out_t *, int, va_list );
163 typedef struct output_segment
170 uint32_t i_segment_number;
174 struct sout_access_out_sys_t
176 char *psz_cursegPath;
180 mtime_t i_keyfile_modification;
186 block_t *block_buffer;
191 bool b_splitanywhere;
195 gcry_cipher_hd_t aes_ctx;
197 uint8_t stuffing_bytes[16];
198 ssize_t stuffing_size;
199 vlc_array_t *segments_t;
202 static int LoadCryptFile( sout_access_out_t *p_access);
203 static int CryptSetup( sout_access_out_t *p_access, char *keyfile );
204 static int CheckSegmentChange( sout_access_out_t *p_access, block_t *p_buffer );
205 static ssize_t writeSegment( sout_access_out_t *p_access );
206 static ssize_t openNextFile( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys );
207 /*****************************************************************************
208 * Open: open the file
209 *****************************************************************************/
210 static int Open( vlc_object_t *p_this )
212 sout_access_out_t *p_access = (sout_access_out_t*)p_this;
213 sout_access_out_sys_t *p_sys;
216 config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
218 if( !p_access->psz_path )
220 msg_Err( p_access, "no file name specified" );
224 if( unlikely( !( p_sys = malloc ( sizeof( *p_sys ) ) ) ) )
227 p_sys->i_seglen = var_GetInteger( p_access, SOUT_CFG_PREFIX "seglen" );
228 /* Try to get within asked segment length */
229 p_sys->i_seglenm = CLOCK_FREQ * p_sys->i_seglen;
230 p_sys->block_buffer = NULL;
232 p_sys->i_numsegs = var_GetInteger( p_access, SOUT_CFG_PREFIX "numsegs" );
233 p_sys->b_splitanywhere = var_GetBool( p_access, SOUT_CFG_PREFIX "splitanywhere" );
234 p_sys->b_delsegs = var_GetBool( p_access, SOUT_CFG_PREFIX "delsegs" );
235 p_sys->b_ratecontrol = var_GetBool( p_access, SOUT_CFG_PREFIX "ratecontrol") ;
236 p_sys->b_caching = var_GetBool( p_access, SOUT_CFG_PREFIX "caching") ;
237 p_sys->b_generate_iv = var_GetBool( p_access, SOUT_CFG_PREFIX "generate-iv") ;
239 p_sys->segments_t = vlc_array_new();
241 p_sys->stuffing_size = 0;
242 p_sys->i_opendts = VLC_TS_INVALID;
244 p_sys->psz_indexPath = NULL;
245 psz_idx = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "index" );
249 psz_tmp = str_format_time( psz_idx );
256 path_sanitize( psz_tmp );
257 p_sys->psz_indexPath = psz_tmp;
258 vlc_unlink( p_sys->psz_indexPath );
261 p_sys->psz_indexUrl = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "index-url" );
262 p_sys->psz_keyfile = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "key-loadfile" );
263 p_sys->key_uri = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "key-uri" );
265 p_access->p_sys = p_sys;
267 if( p_sys->psz_keyfile && ( LoadCryptFile( p_access ) < 0 ) )
269 free( p_sys->psz_indexUrl );
270 free( p_sys->psz_indexPath );
272 msg_Err( p_access, "Encryption init failed" );
275 else if( !p_sys->psz_keyfile && ( CryptSetup( p_access, NULL ) < 0 ) )
277 free( p_sys->psz_indexUrl );
278 free( p_sys->psz_indexPath );
280 msg_Err( p_access, "Encryption init failed" );
284 p_sys->i_handle = -1;
285 p_sys->i_segment = 0;
286 p_sys->psz_cursegPath = NULL;
288 p_access->pf_write = Write;
289 p_access->pf_seek = Seek;
290 p_access->pf_control = Control;
295 /************************************************************************
296 * CryptSetup: Initialize encryption
297 ************************************************************************/
298 static int CryptSetup( sout_access_out_t *p_access, char *key_file )
300 sout_access_out_sys_t *p_sys = p_access->p_sys;
302 char *keyfile = NULL;
305 keyfile = strdup( key_file );
307 keyfile = var_InheritString( p_access, SOUT_CFG_PREFIX "key-file" );
309 if( !p_sys->key_uri ) /*No key uri, assume no encryption wanted*/
311 msg_Dbg( p_access, "No key uri, no encryption");
316 /*Setup encryption cipher*/
317 gcry_error_t err = gcry_cipher_open( &p_sys->aes_ctx, GCRY_CIPHER_AES,
318 GCRY_CIPHER_MODE_CBC, 0 );
321 msg_Err( p_access, "Openin AES Cipher failed: %s", gpg_strerror(err));
325 if( unlikely(keyfile == NULL) )
327 msg_Err( p_access, "No key-file, no encryption" );
331 int keyfd = vlc_open( keyfile, O_RDONLY | O_NONBLOCK );
332 if( unlikely( keyfd == -1 ) )
334 msg_Err( p_access, "Unable to open keyfile %s: %m", keyfile );
340 ssize_t keylen = read( keyfd, key, 16 );
345 msg_Err( p_access, "No key at least 16 octects (you provided %zd), no encryption", keylen );
349 err = gcry_cipher_setkey( p_sys->aes_ctx, key, 16 );
352 msg_Err(p_access, "Setting AES key failed: %s", gpg_strerror(err));
353 gcry_cipher_close( p_sys->aes_ctx);
357 if( p_sys->b_generate_iv )
358 vlc_rand_bytes( p_sys->aes_ivs, sizeof(uint8_t)*16);
364 /************************************************************************
365 * LoadCryptFile: Try to parse key_uri and keyfile-location from file
366 ************************************************************************/
367 static int LoadCryptFile( sout_access_out_t *p_access )
369 sout_access_out_sys_t *p_sys = p_access->p_sys;
371 FILE *stream = vlc_fopen( p_sys->psz_keyfile, "rt" );
372 char *key_file=NULL,*key_uri=NULL;
374 if( unlikely( stream == NULL ) )
376 msg_Err( p_access, "Unable to open keyloadfile %s: %m", p_sys->psz_keyfile );
382 ssize_t len = getline( &key_uri, &(size_t){0}, stream );
383 if( unlikely( len == -1 ) )
385 msg_Err( p_access, "Cannot read %s: %m", p_sys->psz_keyfile );
391 //Strip the newline from uri, maybe scanf would be better?
394 len = getline( &key_file, &(size_t){0}, stream );
395 if( unlikely( len == -1 ) )
397 msg_Err( p_access, "Cannot read %s: %m", p_sys->psz_keyfile );
405 // Strip the last newline from filename
406 key_file[len-1]='\0';
409 int returncode = VLC_SUCCESS;
410 if( !p_sys->key_uri || strcmp( p_sys->key_uri, key_uri ) )
414 free( p_sys->key_uri );
415 p_sys->key_uri = NULL;
417 p_sys->key_uri = strdup( key_uri );
418 returncode = CryptSetup( p_access, key_file );
425 /************************************************************************
426 * CryptKey: Set encryption IV to current segment number
427 ************************************************************************/
428 static int CryptKey( sout_access_out_t *p_access, uint32_t i_segment )
430 sout_access_out_sys_t *p_sys = p_access->p_sys;
432 if( !p_sys->b_generate_iv )
434 /* Use segment number as IV if randomIV isn't selected*/
435 memset( p_sys->aes_ivs, 0, 16 * sizeof(uint8_t));
436 p_sys->aes_ivs[15] = i_segment & 0xff;
437 p_sys->aes_ivs[14] = (i_segment >> 8 ) & 0xff;
438 p_sys->aes_ivs[13] = (i_segment >> 16 ) & 0xff;
439 p_sys->aes_ivs[12] = (i_segment >> 24 ) & 0xff;
442 gcry_error_t err = gcry_cipher_setiv( p_sys->aes_ctx,
446 msg_Err(p_access, "Setting AES IVs failed: %s", gpg_strerror(err) );
447 gcry_cipher_close( p_sys->aes_ctx);
454 #define SEG_NUMBER_PLACEHOLDER "#"
455 /*****************************************************************************
456 * formatSegmentPath: create segment path name based on seg #
457 *****************************************************************************/
458 static char *formatSegmentPath( char *psz_path, uint32_t i_seg, bool b_sanitize )
461 char *psz_firstNumSign;
463 if ( ! ( psz_result = str_format_time( psz_path ) ) )
466 psz_firstNumSign = psz_result + strcspn( psz_result, SEG_NUMBER_PLACEHOLDER );
467 if ( *psz_firstNumSign )
470 int i_cnt = strspn( psz_firstNumSign, SEG_NUMBER_PLACEHOLDER );
473 *psz_firstNumSign = '\0';
474 ret = asprintf( &psz_newResult, "%s%0*d%s", psz_result, i_cnt, i_seg, psz_firstNumSign + i_cnt );
478 psz_result = psz_newResult;
482 path_sanitize( psz_result );
487 static void destroySegment( output_segment_t *segment )
489 free( segment->psz_filename );
490 free( segment->psz_duration );
491 free( segment->psz_uri );
492 free( segment->psz_key_uri );
496 /************************************************************************
497 * segmentAmountNeeded: check that playlist has atleast 3*p_sys->i_seglength of segments
498 * return how many segments are needed for that (max of p_sys->i_segment )
499 ************************************************************************/
500 static uint32_t segmentAmountNeeded( sout_access_out_sys_t *p_sys )
502 float duration = .0f;
503 for( unsigned index = 1; index <= vlc_array_count( p_sys->segments_t ) ; index++ )
505 output_segment_t* segment = vlc_array_item_at_index( p_sys->segments_t, vlc_array_count( p_sys->segments_t ) - index );
506 duration += segment->f_seglength;
508 if( duration >= (float)( 3 * p_sys->i_seglen ) )
509 return __MAX(index, p_sys->i_numsegs);
511 return vlc_array_count( p_sys->segments_t )-1;
516 /************************************************************************
517 * isFirstItemRemovable: Check for draft 11 section 6.2.2
518 * check that the first item has been around outside playlist
519 * segment->f_seglength + (p_sys->i_numsegs * p_sys->i_seglen) before it is removed.
520 ************************************************************************/
521 static bool isFirstItemRemovable( sout_access_out_sys_t *p_sys, uint32_t i_firstseg, uint32_t i_index_offset )
523 float duration = .0f;
525 /* Check that segment has been out of playlist for seglenght + (p_sys->i_numsegs * p_sys->i_seglen) amount
526 * We check this by calculating duration of the items that replaced first item in playlist
528 for(int index=0; index < i_index_offset; index++ )
530 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, p_sys->i_segment - i_firstseg + index );
531 duration += segment->f_seglength;
533 output_segment_t *first = vlc_array_item_at_index( p_sys->segments_t, 0 );
535 return duration >= (first->f_seglength + (float)(p_sys->i_numsegs * p_sys->i_seglen));
538 /************************************************************************
539 * updateIndexAndDel: If necessary, update index file & delete old segments
540 ************************************************************************/
541 static int updateIndexAndDel( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys, bool b_isend )
545 unsigned i_index_offset = 0;
547 if ( p_sys->i_numsegs == 0 || p_sys->i_segment < p_sys->i_numsegs )
551 unsigned numsegs = segmentAmountNeeded( p_sys );
552 i_firstseg = ( p_sys->i_segment - numsegs ) + 1;
553 i_index_offset = vlc_array_count( p_sys->segments_t ) - numsegs;
556 // First update index
557 if ( p_sys->psz_indexPath )
562 if ( asprintf( &psz_idxTmp, "%s.tmp", p_sys->psz_indexPath ) < 0)
565 fp = vlc_fopen( psz_idxTmp, "wt");
568 msg_Err( p_access, "cannot open index file `%s'", psz_idxTmp );
573 if ( fprintf( fp, "#EXTM3U\n#EXT-X-TARGETDURATION:%zu\n#EXT-X-VERSION:3\n#EXT-X-ALLOW-CACHE:%s"
574 "%s\n#EXT-X-MEDIA-SEQUENCE:%"PRIu32"\n", p_sys->i_seglen,
575 p_sys->b_caching ? "YES" : "NO",
576 p_sys->i_numsegs > 0 ? "" : b_isend ? "\n#EXT-X-PLAYLIST-TYPE:VOD" : "\n#EXT-X-PLAYLIST-TYPE:EVENT",
583 char *psz_current_uri=NULL;
586 for ( uint32_t i = i_firstseg; i <= p_sys->i_segment; i++ )
588 //scale to i_index_offset..numsegs + i_index_offset
589 uint32_t index = i - i_firstseg + i_index_offset;
591 output_segment_t *segment = (output_segment_t *)vlc_array_item_at_index( p_sys->segments_t, index );
592 if( p_sys->key_uri &&
593 ( !psz_current_uri || strcmp( psz_current_uri, segment->psz_key_uri ) )
597 free( psz_current_uri );
598 psz_current_uri = strdup( segment->psz_key_uri );
599 if( p_sys->b_generate_iv )
601 unsigned long long iv_hi = 0, iv_lo = 0;
602 for( unsigned short i = 0; i < 8; i++ )
604 iv_hi |= segment->aes_ivs[i] & 0xff;
606 iv_lo |= segment->aes_ivs[8+i] & 0xff;
609 ret = fprintf( fp, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\",IV=0X%16.16llx%16.16llx\n",
610 segment->psz_key_uri, iv_hi, iv_lo );
613 ret = fprintf( fp, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"\n", segment->psz_key_uri );
623 val = fprintf( fp, "#EXTINF:%s,\n%s\n", segment->psz_duration, segment->psz_uri);
630 free( psz_current_uri );
634 if ( fputs ( STR_ENDLIST, fp ) < 0)
644 val = vlc_rename ( psz_idxTmp, p_sys->psz_indexPath);
648 vlc_unlink( psz_idxTmp );
649 msg_Err( p_access, "Error moving LiveHttp index file" );
652 msg_Dbg( p_access, "LiveHttpIndexComplete: %s" , p_sys->psz_indexPath );
657 // Then take care of deletion
658 // Try to follow pantos draft 11 section 6.2.2
659 while( p_sys->b_delsegs && p_sys->i_numsegs &&
660 isFirstItemRemovable( p_sys, i_firstseg, i_index_offset )
663 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, 0 );
664 msg_Dbg( p_access, "Removing segment number %d", segment->i_segment_number );
665 vlc_array_remove( p_sys->segments_t, 0 );
667 if ( segment->psz_filename )
669 vlc_unlink( segment->psz_filename );
672 destroySegment( segment );
680 /*****************************************************************************
681 * closeCurrentSegment: Close the segment file
682 *****************************************************************************/
683 static void closeCurrentSegment( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys, bool b_isend )
685 if ( p_sys->i_handle >= 0 )
687 output_segment_t *segment = (output_segment_t *)vlc_array_item_at_index( p_sys->segments_t, vlc_array_count( p_sys->segments_t ) - 1 );
691 size_t pad = 16 - p_sys->stuffing_size;
692 memset(&p_sys->stuffing_bytes[p_sys->stuffing_size], pad, pad);
693 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx, p_sys->stuffing_bytes, 16, NULL, 0 );
696 msg_Err( p_access, "Couldn't encrypt 16 bytes: %s", gpg_strerror(err) );
698 int ret = write( p_sys->i_handle, p_sys->stuffing_bytes, 16 );
700 msg_Err( p_access, "Couldn't write 16 bytes" );
702 p_sys->stuffing_size = 0;
706 close( p_sys->i_handle );
707 p_sys->i_handle = -1;
709 if( ! ( us_asprintf( &segment->psz_duration, "%.2f", p_sys->f_seglen ) ) )
711 msg_Err( p_access, "Couldn't set duration on closed segment");
714 segment->f_seglength = p_sys->f_seglen;
716 segment->i_segment_number = p_sys->i_segment;
718 if ( p_sys->psz_cursegPath )
720 msg_Dbg( p_access, "LiveHttpSegmentComplete: %s (%"PRIu32")" , p_sys->psz_cursegPath, p_sys->i_segment );
721 free( p_sys->psz_cursegPath );
722 p_sys->psz_cursegPath = 0;
723 updateIndexAndDel( p_access, p_sys, b_isend );
728 /*****************************************************************************
729 * Close: close the target
730 *****************************************************************************/
731 static void Close( vlc_object_t * p_this )
733 sout_access_out_t *p_access = (sout_access_out_t*)p_this;
734 sout_access_out_sys_t *p_sys = p_access->p_sys;
735 block_t *output_block = p_sys->block_buffer;
736 p_sys->block_buffer = NULL;
738 while( output_block )
740 block_t *p_next = output_block->p_next;
741 output_block->p_next = NULL;
743 /* Since we are flushing, check the segment change by hand and don't wait
744 * possible keyframe*/
745 if( ((float)(output_block->i_length * CLOCK_FREQ / INT64_C(1000000) ) +
746 (float)(output_block->i_dts - p_sys->i_opendts)) >= p_sys->i_seglenm )
748 closeCurrentSegment( p_access, p_sys, false );
749 if( unlikely(openNextFile( p_access, p_sys ) < 0 ) )
751 block_ChainRelease( output_block );
753 block_ChainRelease( p_next );
755 /* Jump out of the loop so we can close rest of the stuff*/
758 p_sys->i_opendts = p_sys->block_buffer ? p_sys->block_buffer->i_dts : output_block->i_dts;
760 Write( p_access, output_block );
761 output_block = p_next;
764 ssize_t writevalue = writeSegment( p_access );
765 msg_Dbg( p_access, "Writing.. %"PRId64,writevalue);
766 if( unlikely( writevalue < 0 ) )
768 block_ChainRelease( p_sys->block_buffer );
769 p_sys->block_buffer = NULL;
772 closeCurrentSegment( p_access, p_sys, true );
776 gcry_cipher_close( p_sys->aes_ctx );
777 free( p_sys->key_uri );
780 while( vlc_array_count( p_sys->segments_t ) > 0 )
782 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, 0 );
783 vlc_array_remove( p_sys->segments_t, 0 );
784 destroySegment( segment );
786 vlc_array_destroy( p_sys->segments_t );
788 free( p_sys->psz_indexUrl );
789 free( p_sys->psz_indexPath );
792 msg_Dbg( p_access, "livehttp access output closed" );
795 static int Control( sout_access_out_t *p_access, int i_query, va_list args )
797 sout_access_out_sys_t *p_sys = p_access->p_sys;
801 case ACCESS_OUT_CONTROLS_PACE:
803 bool *pb = va_arg( args, bool * );
804 *pb = !p_sys->b_ratecontrol;
815 /*****************************************************************************
816 * openNextFile: Open the segment file
817 *****************************************************************************/
818 static ssize_t openNextFile( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys )
822 uint32_t i_newseg = p_sys->i_segment + 1;
824 /* Create segment and fill it info that we can (everything excluding duration */
825 output_segment_t *segment = (output_segment_t*)malloc(sizeof(output_segment_t));
826 if( unlikely( !segment ) )
829 memset( segment, 0 , sizeof( output_segment_t ) );
831 segment->i_segment_number = i_newseg;
832 segment->psz_filename = formatSegmentPath( p_access->psz_path, i_newseg, true );
833 char *psz_idxFormat = p_sys->psz_indexUrl ? p_sys->psz_indexUrl : p_access->psz_path;
834 segment->psz_uri = formatSegmentPath( psz_idxFormat , i_newseg, false );
836 if ( unlikely( !segment->psz_filename ) )
838 msg_Err( p_access, "Format segmentpath failed");
842 fd = vlc_open( segment->psz_filename, O_WRONLY | O_CREAT | O_LARGEFILE |
846 msg_Err( p_access, "cannot open `%s' (%m)", segment->psz_filename );
847 destroySegment( segment );
851 vlc_array_append( p_sys->segments_t, segment);
853 if( p_sys->psz_keyfile )
855 LoadCryptFile( p_access );
860 segment->psz_key_uri = strdup( p_sys->key_uri );
861 CryptKey( p_access, i_newseg );
862 if( p_sys->b_generate_iv )
863 memcpy( segment->aes_ivs, p_sys->aes_ivs, sizeof(uint8_t)*16 );
865 msg_Dbg( p_access, "Successfully opened livehttp file: %s (%"PRIu32")" , segment->psz_filename, i_newseg );
867 p_sys->psz_cursegPath = strdup(segment->psz_filename);
868 p_sys->i_handle = fd;
869 p_sys->i_segment = i_newseg;
872 /*****************************************************************************
873 * CheckSegmentChange: Check if segment needs to be closed and new opened
874 *****************************************************************************/
875 static int CheckSegmentChange( sout_access_out_t *p_access, block_t *p_buffer )
877 sout_access_out_sys_t *p_sys = p_access->p_sys;
878 block_t *output = p_sys->block_buffer;
880 if( p_sys->i_handle > 0 &&
881 ( ( p_buffer->i_dts - p_sys->i_opendts +
882 ( p_buffer->i_length * CLOCK_FREQ / INT64_C(1000000) )
883 ) >= p_sys->i_seglenm ) )
885 closeCurrentSegment( p_access, p_sys, false );
888 if ( p_sys->i_handle < 0 )
890 p_sys->i_opendts = output ? output->i_dts : p_buffer->i_dts;
891 //For first segment we can get negative duration otherwise...?
892 if( ( p_sys->i_opendts != VLC_TS_INVALID ) &&
893 ( p_buffer->i_dts < p_sys->i_opendts ) )
894 p_sys->i_opendts = p_buffer->i_dts;
896 if ( openNextFile( p_access, p_sys ) < 0 )
902 static ssize_t writeSegment( sout_access_out_t *p_access )
904 sout_access_out_sys_t *p_sys = p_access->p_sys;
905 block_t *output = p_sys->block_buffer;
906 p_sys->block_buffer = NULL;
908 bool crypted = false;
911 if( p_sys->key_uri && !crypted )
913 if( p_sys->stuffing_size )
915 output = block_Realloc( output, p_sys->stuffing_size, output->i_buffer );
916 if( unlikely(!output ) )
918 memcpy( output->p_buffer, p_sys->stuffing_bytes, p_sys->stuffing_size );
919 p_sys->stuffing_size = 0;
921 size_t original = output->i_buffer;
922 size_t padded = (output->i_buffer + 15 ) & ~15;
923 size_t pad = padded - original;
926 p_sys->stuffing_size = 16-pad;
927 output->i_buffer -= p_sys->stuffing_size;
928 memcpy(p_sys->stuffing_bytes, &output->p_buffer[output->i_buffer], p_sys->stuffing_size);
931 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx,
932 output->p_buffer, output->i_buffer, NULL, 0 );
935 msg_Err( p_access, "Encryption failure: %s ", gpg_strerror(err) );
941 ssize_t val = write( p_sys->i_handle, output->p_buffer, output->i_buffer );
944 if ( errno == EINTR )
950 (float)(output->i_length / INT64_C(1000000) ) +
951 (float)(output->i_dts - p_sys->i_opendts) / CLOCK_FREQ;
953 if ( (size_t)val >= output->i_buffer )
955 block_t *p_next = output->p_next;
956 block_Release (output);
962 output->p_buffer += val;
963 output->i_buffer -= val;
970 /*****************************************************************************
971 * Write: standard write on a file descriptor.
972 *****************************************************************************/
973 static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
976 sout_access_out_sys_t *p_sys = p_access->p_sys;
980 if( ( p_sys->b_splitanywhere || ( p_buffer->i_flags & BLOCK_FLAG_HEADER ) ) )
982 if( unlikely( CheckSegmentChange( p_access, p_buffer ) != VLC_SUCCESS ) )
984 block_ChainRelease ( p_buffer );
988 ssize_t writevalue = writeSegment( p_access );
989 if( unlikely( writevalue < 0 ) )
991 block_ChainRelease ( p_buffer );
994 i_write += writevalue;
997 p_temp = p_buffer->p_next;
998 p_buffer->p_next = NULL;
999 block_ChainAppend( &p_sys->block_buffer, p_buffer );
1006 /*****************************************************************************
1007 * Seek: seek to a specific location in a file
1008 *****************************************************************************/
1009 static int Seek( sout_access_out_t *p_access, off_t i_pos )
1012 msg_Err( p_access, "livehttp sout access cannot seek" );