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")
107 #define INTITIAL_SEG_TEXT N_("Number of first segment")
108 #define INITIAL_SEG_LONGTEXT N_("The number of the segmented generated")
111 set_description( N_("HTTP Live streaming output") )
112 set_shortname( N_("LiveHTTP" ))
113 add_shortcut( "livehttp" )
114 set_capability( "sout access", 0 )
115 set_category( CAT_SOUT )
116 set_subcategory( SUBCAT_SOUT_ACO )
117 add_integer( SOUT_CFG_PREFIX "seglen", 10, SEGLEN_TEXT, SEGLEN_LONGTEXT, false )
118 add_integer( SOUT_CFG_PREFIX "numsegs", 0, NUMSEGS_TEXT, NUMSEGS_LONGTEXT, false )
119 add_integer( SOUT_CFG_PREFIX "initial-segment-number", 1, INTITIAL_SEG_TEXT, INITIAL_SEG_LONGTEXT, false )
120 add_bool( SOUT_CFG_PREFIX "splitanywhere", false,
121 SPLITANYWHERE_TEXT, SPLITANYWHERE_LONGTEXT, true )
122 add_bool( SOUT_CFG_PREFIX "delsegs", true,
123 DELSEGS_TEXT, DELSEGS_LONGTEXT, true )
124 add_bool( SOUT_CFG_PREFIX "ratecontrol", false,
125 RATECONTROL_TEXT, RATECONTROL_TEXT, true )
126 add_bool( SOUT_CFG_PREFIX "caching", false,
127 NOCACHE_TEXT, NOCACHE_LONGTEXT, true )
128 add_bool( SOUT_CFG_PREFIX "generate-iv", false,
129 RANDOMIV_TEXT, RANDOMIV_LONGTEXT, true )
130 add_string( SOUT_CFG_PREFIX "index", NULL,
131 INDEX_TEXT, INDEX_LONGTEXT, false )
132 add_string( SOUT_CFG_PREFIX "index-url", NULL,
133 INDEXURL_TEXT, INDEXURL_LONGTEXT, false )
134 add_string( SOUT_CFG_PREFIX "key-uri", NULL,
135 KEYURI_TEXT, KEYURI_TEXT, true )
136 add_loadfile( SOUT_CFG_PREFIX "key-file", NULL,
137 KEYFILE_TEXT, KEYFILE_LONGTEXT, true )
138 add_loadfile( SOUT_CFG_PREFIX "key-loadfile", NULL,
139 KEYLOADFILE_TEXT, KEYLOADFILE_LONGTEXT, true )
140 set_callbacks( Open, Close )
144 /*****************************************************************************
145 * Exported prototypes
146 *****************************************************************************/
147 static const char *const ppsz_sout_options[] = {
160 "initial-segment-number",
164 static ssize_t Write( sout_access_out_t *, block_t * );
165 static int Seek ( sout_access_out_t *, off_t );
166 static int Control( sout_access_out_t *, int, va_list );
168 typedef struct output_segment
175 uint32_t i_segment_number;
179 struct sout_access_out_sys_t
181 char *psz_cursegPath;
185 mtime_t i_keyfile_modification;
191 block_t *block_buffer;
194 unsigned i_initial_segment;
197 bool b_splitanywhere;
201 gcry_cipher_hd_t aes_ctx;
203 uint8_t stuffing_bytes[16];
204 ssize_t stuffing_size;
205 vlc_array_t *segments_t;
208 static int LoadCryptFile( sout_access_out_t *p_access);
209 static int CryptSetup( sout_access_out_t *p_access, char *keyfile );
210 static int CheckSegmentChange( sout_access_out_t *p_access, block_t *p_buffer );
211 static ssize_t writeSegment( sout_access_out_t *p_access );
212 static ssize_t openNextFile( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys );
213 /*****************************************************************************
214 * Open: open the file
215 *****************************************************************************/
216 static int Open( vlc_object_t *p_this )
218 sout_access_out_t *p_access = (sout_access_out_t*)p_this;
219 sout_access_out_sys_t *p_sys;
222 config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
224 if( !p_access->psz_path )
226 msg_Err( p_access, "no file name specified" );
230 if( unlikely( !( p_sys = calloc ( 1, sizeof( *p_sys ) ) ) ) )
233 p_sys->i_seglen = var_GetInteger( p_access, SOUT_CFG_PREFIX "seglen" );
234 /* Try to get within asked segment length */
235 p_sys->i_seglenm = CLOCK_FREQ * p_sys->i_seglen;
236 p_sys->block_buffer = NULL;
238 p_sys->i_numsegs = var_GetInteger( p_access, SOUT_CFG_PREFIX "numsegs" );
239 p_sys->i_initial_segment = var_GetInteger( p_access, SOUT_CFG_PREFIX "initial-segment-number" );
240 p_sys->b_splitanywhere = var_GetBool( p_access, SOUT_CFG_PREFIX "splitanywhere" );
241 p_sys->b_delsegs = var_GetBool( p_access, SOUT_CFG_PREFIX "delsegs" );
242 p_sys->b_ratecontrol = var_GetBool( p_access, SOUT_CFG_PREFIX "ratecontrol") ;
243 p_sys->b_caching = var_GetBool( p_access, SOUT_CFG_PREFIX "caching") ;
244 p_sys->b_generate_iv = var_GetBool( p_access, SOUT_CFG_PREFIX "generate-iv") ;
246 p_sys->segments_t = vlc_array_new();
248 p_sys->stuffing_size = 0;
249 p_sys->i_opendts = VLC_TS_INVALID;
251 p_sys->psz_indexPath = NULL;
252 psz_idx = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "index" );
256 psz_tmp = str_format_time( psz_idx );
263 path_sanitize( psz_tmp );
264 p_sys->psz_indexPath = psz_tmp;
265 vlc_unlink( p_sys->psz_indexPath );
268 p_sys->psz_indexUrl = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "index-url" );
269 p_sys->psz_keyfile = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "key-loadfile" );
270 p_sys->key_uri = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "key-uri" );
272 p_access->p_sys = p_sys;
274 if( p_sys->psz_keyfile && ( LoadCryptFile( p_access ) < 0 ) )
276 free( p_sys->psz_indexUrl );
277 free( p_sys->psz_indexPath );
279 msg_Err( p_access, "Encryption init failed" );
282 else if( !p_sys->psz_keyfile && ( CryptSetup( p_access, NULL ) < 0 ) )
284 free( p_sys->psz_indexUrl );
285 free( p_sys->psz_indexPath );
287 msg_Err( p_access, "Encryption init failed" );
291 p_sys->i_handle = -1;
292 p_sys->i_segment = p_sys->i_initial_segment > 0 ? p_sys->i_initial_segment -1 : 0;
293 p_sys->psz_cursegPath = NULL;
295 p_access->pf_write = Write;
296 p_access->pf_seek = Seek;
297 p_access->pf_control = Control;
302 /************************************************************************
303 * CryptSetup: Initialize encryption
304 ************************************************************************/
305 static int CryptSetup( sout_access_out_t *p_access, char *key_file )
307 sout_access_out_sys_t *p_sys = p_access->p_sys;
309 char *keyfile = NULL;
311 if( !p_sys->key_uri ) /*No key uri, assume no encryption wanted*/
313 msg_Dbg( p_access, "No key uri, no encryption");
318 keyfile = strdup( key_file );
320 keyfile = var_InheritString( p_access, SOUT_CFG_PREFIX "key-file" );
322 if( unlikely(keyfile == NULL) )
324 msg_Err( p_access, "No key-file, no encryption" );
330 /*Setup encryption cipher*/
331 gcry_error_t err = gcry_cipher_open( &p_sys->aes_ctx, GCRY_CIPHER_AES,
332 GCRY_CIPHER_MODE_CBC, 0 );
335 msg_Err( p_access, "Openin AES Cipher failed: %s", gpg_strerror(err));
340 int keyfd = vlc_open( keyfile, O_RDONLY | O_NONBLOCK );
341 if( unlikely( keyfd == -1 ) )
343 msg_Err( p_access, "Unable to open keyfile %s: %m", keyfile );
345 gcry_cipher_close( p_sys->aes_ctx );
350 ssize_t keylen = read( keyfd, key, 16 );
355 msg_Err( p_access, "No key at least 16 octects (you provided %zd), no encryption", keylen );
356 gcry_cipher_close( p_sys->aes_ctx );
360 err = gcry_cipher_setkey( p_sys->aes_ctx, key, 16 );
363 msg_Err(p_access, "Setting AES key failed: %s", gpg_strerror(err));
364 gcry_cipher_close( p_sys->aes_ctx );
368 if( p_sys->b_generate_iv )
369 vlc_rand_bytes( p_sys->aes_ivs, sizeof(uint8_t)*16);
375 /************************************************************************
376 * LoadCryptFile: Try to parse key_uri and keyfile-location from file
377 ************************************************************************/
378 static int LoadCryptFile( sout_access_out_t *p_access )
380 sout_access_out_sys_t *p_sys = p_access->p_sys;
382 FILE *stream = vlc_fopen( p_sys->psz_keyfile, "rt" );
383 char *key_file=NULL,*key_uri=NULL;
385 if( unlikely( stream == NULL ) )
387 msg_Err( p_access, "Unable to open keyloadfile %s: %m", p_sys->psz_keyfile );
393 ssize_t len = getline( &key_uri, &(size_t){0}, stream );
394 if( unlikely( len == -1 ) )
396 msg_Err( p_access, "Cannot read %s: %m", p_sys->psz_keyfile );
402 //Strip the newline from uri, maybe scanf would be better?
405 len = getline( &key_file, &(size_t){0}, stream );
406 if( unlikely( len == -1 ) )
408 msg_Err( p_access, "Cannot read %s: %m", p_sys->psz_keyfile );
416 // Strip the last newline from filename
417 key_file[len-1]='\0';
420 int returncode = VLC_SUCCESS;
421 if( !p_sys->key_uri || strcmp( p_sys->key_uri, key_uri ) )
425 free( p_sys->key_uri );
426 p_sys->key_uri = NULL;
428 p_sys->key_uri = strdup( key_uri );
429 returncode = CryptSetup( p_access, key_file );
436 /************************************************************************
437 * CryptKey: Set encryption IV to current segment number
438 ************************************************************************/
439 static int CryptKey( sout_access_out_t *p_access, uint32_t i_segment )
441 sout_access_out_sys_t *p_sys = p_access->p_sys;
443 if( !p_sys->b_generate_iv )
445 /* Use segment number as IV if randomIV isn't selected*/
446 memset( p_sys->aes_ivs, 0, 16 * sizeof(uint8_t));
447 p_sys->aes_ivs[15] = i_segment & 0xff;
448 p_sys->aes_ivs[14] = (i_segment >> 8 ) & 0xff;
449 p_sys->aes_ivs[13] = (i_segment >> 16 ) & 0xff;
450 p_sys->aes_ivs[12] = (i_segment >> 24 ) & 0xff;
453 gcry_error_t err = gcry_cipher_setiv( p_sys->aes_ctx,
457 msg_Err(p_access, "Setting AES IVs failed: %s", gpg_strerror(err) );
458 gcry_cipher_close( p_sys->aes_ctx);
465 #define SEG_NUMBER_PLACEHOLDER "#"
466 /*****************************************************************************
467 * formatSegmentPath: create segment path name based on seg #
468 *****************************************************************************/
469 static char *formatSegmentPath( char *psz_path, uint32_t i_seg, bool b_sanitize )
472 char *psz_firstNumSign;
474 if ( ! ( psz_result = str_format_time( psz_path ) ) )
477 psz_firstNumSign = psz_result + strcspn( psz_result, SEG_NUMBER_PLACEHOLDER );
478 if ( *psz_firstNumSign )
481 int i_cnt = strspn( psz_firstNumSign, SEG_NUMBER_PLACEHOLDER );
484 *psz_firstNumSign = '\0';
485 ret = asprintf( &psz_newResult, "%s%0*d%s", psz_result, i_cnt, i_seg, psz_firstNumSign + i_cnt );
489 psz_result = psz_newResult;
493 path_sanitize( psz_result );
498 static void destroySegment( output_segment_t *segment )
500 free( segment->psz_filename );
501 free( segment->psz_duration );
502 free( segment->psz_uri );
503 free( segment->psz_key_uri );
507 /************************************************************************
508 * segmentAmountNeeded: check that playlist has atleast 3*p_sys->i_seglength of segments
509 * return how many segments are needed for that (max of p_sys->i_segment )
510 ************************************************************************/
511 static uint32_t segmentAmountNeeded( sout_access_out_sys_t *p_sys )
513 float duration = .0f;
514 for( unsigned index = 1; (int)index <= vlc_array_count( p_sys->segments_t ); index++ )
516 output_segment_t* segment = vlc_array_item_at_index( p_sys->segments_t, vlc_array_count( p_sys->segments_t ) - index );
517 duration += segment->f_seglength;
519 if( duration >= (float)( 3 * p_sys->i_seglen ) )
520 return __MAX(index, p_sys->i_numsegs);
522 return vlc_array_count( p_sys->segments_t )-1;
527 /************************************************************************
528 * isFirstItemRemovable: Check for draft 11 section 6.2.2
529 * check that the first item has been around outside playlist
530 * segment->f_seglength + (p_sys->i_numsegs * p_sys->i_seglen) before it is removed.
531 ************************************************************************/
532 static bool isFirstItemRemovable( sout_access_out_sys_t *p_sys, uint32_t i_firstseg, uint32_t i_index_offset )
534 float duration = .0f;
536 /* Check that segment has been out of playlist for seglenght + (p_sys->i_numsegs * p_sys->i_seglen) amount
537 * We check this by calculating duration of the items that replaced first item in playlist
539 for( unsigned int index = 0; index < i_index_offset; index++ )
541 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, p_sys->i_segment - i_firstseg + index );
542 duration += segment->f_seglength;
544 output_segment_t *first = vlc_array_item_at_index( p_sys->segments_t, 0 );
546 return duration >= (first->f_seglength + (float)(p_sys->i_numsegs * p_sys->i_seglen));
549 /************************************************************************
550 * updateIndexAndDel: If necessary, update index file & delete old segments
551 ************************************************************************/
552 static int updateIndexAndDel( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys, bool b_isend )
556 unsigned i_index_offset = 0;
558 if ( p_sys->i_numsegs == 0 ||
559 p_sys->i_segment < ( p_sys->i_numsegs + p_sys->i_initial_segment ) )
561 i_firstseg = p_sys->i_initial_segment == 0 ? 1 : p_sys->i_initial_segment;
565 unsigned numsegs = segmentAmountNeeded( p_sys );
566 i_firstseg = ( p_sys->i_segment - numsegs ) + 1;
567 i_index_offset = vlc_array_count( p_sys->segments_t ) - numsegs;
570 // First update index
571 if ( p_sys->psz_indexPath )
576 if ( asprintf( &psz_idxTmp, "%s.tmp", p_sys->psz_indexPath ) < 0)
579 fp = vlc_fopen( psz_idxTmp, "wt");
582 msg_Err( p_access, "cannot open index file `%s'", psz_idxTmp );
587 if ( fprintf( fp, "#EXTM3U\n#EXT-X-TARGETDURATION:%zu\n#EXT-X-VERSION:3\n#EXT-X-ALLOW-CACHE:%s"
588 "%s\n#EXT-X-MEDIA-SEQUENCE:%"PRIu32"\n", p_sys->i_seglen,
589 p_sys->b_caching ? "YES" : "NO",
590 p_sys->i_numsegs > 0 ? "" : b_isend ? "\n#EXT-X-PLAYLIST-TYPE:VOD" : "\n#EXT-X-PLAYLIST-TYPE:EVENT",
597 char *psz_current_uri=NULL;
600 for ( uint32_t i = i_firstseg; i <= p_sys->i_segment; i++ )
602 //scale to i_index_offset..numsegs + i_index_offset
603 uint32_t index = i - i_firstseg + i_index_offset;
605 output_segment_t *segment = (output_segment_t *)vlc_array_item_at_index( p_sys->segments_t, index );
606 if( p_sys->key_uri &&
607 ( !psz_current_uri || strcmp( psz_current_uri, segment->psz_key_uri ) )
611 free( psz_current_uri );
612 psz_current_uri = strdup( segment->psz_key_uri );
613 if( p_sys->b_generate_iv )
615 unsigned long long iv_hi = 0, iv_lo = 0;
616 for( unsigned short i = 0; i < 8; i++ )
618 iv_hi |= segment->aes_ivs[i] & 0xff;
620 iv_lo |= segment->aes_ivs[8+i] & 0xff;
623 ret = fprintf( fp, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\",IV=0X%16.16llx%16.16llx\n",
624 segment->psz_key_uri, iv_hi, iv_lo );
627 ret = fprintf( fp, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"\n", segment->psz_key_uri );
631 free( psz_current_uri );
638 val = fprintf( fp, "#EXTINF:%s,\n%s\n", segment->psz_duration, segment->psz_uri);
641 free( psz_current_uri );
647 free( psz_current_uri );
651 if ( fputs ( STR_ENDLIST, fp ) < 0)
661 val = vlc_rename ( psz_idxTmp, p_sys->psz_indexPath);
665 vlc_unlink( psz_idxTmp );
666 msg_Err( p_access, "Error moving LiveHttp index file" );
669 msg_Dbg( p_access, "LiveHttpIndexComplete: %s" , p_sys->psz_indexPath );
674 // Then take care of deletion
675 // Try to follow pantos draft 11 section 6.2.2
676 while( p_sys->b_delsegs && p_sys->i_numsegs &&
677 isFirstItemRemovable( p_sys, i_firstseg, i_index_offset )
680 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, 0 );
681 msg_Dbg( p_access, "Removing segment number %d", segment->i_segment_number );
682 vlc_array_remove( p_sys->segments_t, 0 );
684 if ( segment->psz_filename )
686 vlc_unlink( segment->psz_filename );
689 destroySegment( segment );
697 /*****************************************************************************
698 * closeCurrentSegment: Close the segment file
699 *****************************************************************************/
700 static void closeCurrentSegment( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys, bool b_isend )
702 if ( p_sys->i_handle >= 0 )
704 output_segment_t *segment = (output_segment_t *)vlc_array_item_at_index( p_sys->segments_t, vlc_array_count( p_sys->segments_t ) - 1 );
708 size_t pad = 16 - p_sys->stuffing_size;
709 memset(&p_sys->stuffing_bytes[p_sys->stuffing_size], pad, pad);
710 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx, p_sys->stuffing_bytes, 16, NULL, 0 );
713 msg_Err( p_access, "Couldn't encrypt 16 bytes: %s", gpg_strerror(err) );
715 int ret = write( p_sys->i_handle, p_sys->stuffing_bytes, 16 );
717 msg_Err( p_access, "Couldn't write 16 bytes" );
719 p_sys->stuffing_size = 0;
723 close( p_sys->i_handle );
724 p_sys->i_handle = -1;
726 if( ! ( us_asprintf( &segment->psz_duration, "%.2f", p_sys->f_seglen ) ) )
728 msg_Err( p_access, "Couldn't set duration on closed segment");
731 segment->f_seglength = p_sys->f_seglen;
733 segment->i_segment_number = p_sys->i_segment;
735 if ( p_sys->psz_cursegPath )
737 msg_Dbg( p_access, "LiveHttpSegmentComplete: %s (%"PRIu32")" , p_sys->psz_cursegPath, p_sys->i_segment );
738 free( p_sys->psz_cursegPath );
739 p_sys->psz_cursegPath = 0;
740 updateIndexAndDel( p_access, p_sys, b_isend );
745 /*****************************************************************************
746 * Close: close the target
747 *****************************************************************************/
748 static void Close( vlc_object_t * p_this )
750 sout_access_out_t *p_access = (sout_access_out_t*)p_this;
751 sout_access_out_sys_t *p_sys = p_access->p_sys;
752 block_t *output_block = p_sys->block_buffer;
753 p_sys->block_buffer = NULL;
755 while( output_block )
757 block_t *p_next = output_block->p_next;
758 output_block->p_next = NULL;
760 /* Since we are flushing, check the segment change by hand and don't wait
761 * possible keyframe*/
762 if( ((float)(output_block->i_length * CLOCK_FREQ / INT64_C(1000000) ) +
763 (float)(output_block->i_dts - p_sys->i_opendts)) >= p_sys->i_seglenm )
765 closeCurrentSegment( p_access, p_sys, false );
766 if( unlikely(openNextFile( p_access, p_sys ) < 0 ) )
768 block_ChainRelease( output_block );
770 block_ChainRelease( p_next );
772 /* Jump out of the loop so we can close rest of the stuff*/
775 p_sys->i_opendts = p_sys->block_buffer ? p_sys->block_buffer->i_dts : output_block->i_dts;
777 Write( p_access, output_block );
778 output_block = p_next;
781 ssize_t writevalue = writeSegment( p_access );
782 msg_Dbg( p_access, "Writing.. %zd", writevalue );
783 if( unlikely( writevalue < 0 ) )
785 block_ChainRelease( p_sys->block_buffer );
786 p_sys->block_buffer = NULL;
789 closeCurrentSegment( p_access, p_sys, true );
793 gcry_cipher_close( p_sys->aes_ctx );
794 free( p_sys->key_uri );
797 while( vlc_array_count( p_sys->segments_t ) > 0 )
799 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, 0 );
800 vlc_array_remove( p_sys->segments_t, 0 );
801 if( p_sys->b_delsegs && p_sys->i_numsegs && segment->psz_filename )
803 msg_Dbg( p_access, "Removing segment number %d name %s", segment->i_segment_number, segment->psz_filename );
804 vlc_unlink( segment->psz_filename );
807 destroySegment( segment );
809 vlc_array_destroy( p_sys->segments_t );
811 free( p_sys->psz_indexUrl );
812 free( p_sys->psz_indexPath );
815 msg_Dbg( p_access, "livehttp access output closed" );
818 static int Control( sout_access_out_t *p_access, int i_query, va_list args )
820 sout_access_out_sys_t *p_sys = p_access->p_sys;
824 case ACCESS_OUT_CONTROLS_PACE:
826 bool *pb = va_arg( args, bool * );
827 *pb = !p_sys->b_ratecontrol;
838 /*****************************************************************************
839 * openNextFile: Open the segment file
840 *****************************************************************************/
841 static ssize_t openNextFile( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys )
845 uint32_t i_newseg = p_sys->i_segment + 1;
847 /* Create segment and fill it info that we can (everything excluding duration */
848 output_segment_t *segment = (output_segment_t*)calloc(1, sizeof(output_segment_t));
849 if( unlikely( !segment ) )
852 segment->i_segment_number = i_newseg;
853 segment->psz_filename = formatSegmentPath( p_access->psz_path, i_newseg, true );
854 char *psz_idxFormat = p_sys->psz_indexUrl ? p_sys->psz_indexUrl : p_access->psz_path;
855 segment->psz_uri = formatSegmentPath( psz_idxFormat , i_newseg, false );
857 if ( unlikely( !segment->psz_filename ) )
859 msg_Err( p_access, "Format segmentpath failed");
860 destroySegment( segment );
864 fd = vlc_open( segment->psz_filename, O_WRONLY | O_CREAT | O_LARGEFILE |
868 msg_Err( p_access, "cannot open `%s' (%m)", segment->psz_filename );
869 destroySegment( segment );
873 vlc_array_append( p_sys->segments_t, segment);
875 if( p_sys->psz_keyfile )
877 LoadCryptFile( p_access );
882 segment->psz_key_uri = strdup( p_sys->key_uri );
883 CryptKey( p_access, i_newseg );
884 if( p_sys->b_generate_iv )
885 memcpy( segment->aes_ivs, p_sys->aes_ivs, sizeof(uint8_t)*16 );
887 msg_Dbg( p_access, "Successfully opened livehttp file: %s (%"PRIu32")" , segment->psz_filename, i_newseg );
889 p_sys->psz_cursegPath = strdup(segment->psz_filename);
890 p_sys->i_handle = fd;
891 p_sys->i_segment = i_newseg;
894 /*****************************************************************************
895 * CheckSegmentChange: Check if segment needs to be closed and new opened
896 *****************************************************************************/
897 static int CheckSegmentChange( sout_access_out_t *p_access, block_t *p_buffer )
899 sout_access_out_sys_t *p_sys = p_access->p_sys;
900 block_t *output = p_sys->block_buffer;
902 if( p_sys->i_handle > 0 &&
903 ( ( p_buffer->i_dts - p_sys->i_opendts +
904 ( p_buffer->i_length * CLOCK_FREQ / INT64_C(1000000) )
905 ) >= p_sys->i_seglenm ) )
907 closeCurrentSegment( p_access, p_sys, false );
910 if ( p_sys->i_handle < 0 )
912 p_sys->i_opendts = output ? output->i_dts : p_buffer->i_dts;
913 //For first segment we can get negative duration otherwise...?
914 if( ( p_sys->i_opendts != VLC_TS_INVALID ) &&
915 ( p_buffer->i_dts < p_sys->i_opendts ) )
916 p_sys->i_opendts = p_buffer->i_dts;
918 if ( openNextFile( p_access, p_sys ) < 0 )
924 static ssize_t writeSegment( sout_access_out_t *p_access )
926 sout_access_out_sys_t *p_sys = p_access->p_sys;
927 block_t *output = p_sys->block_buffer;
928 p_sys->block_buffer = NULL;
930 bool crypted = false;
933 if( p_sys->key_uri && !crypted )
935 if( p_sys->stuffing_size )
937 output = block_Realloc( output, p_sys->stuffing_size, output->i_buffer );
938 if( unlikely(!output ) )
940 memcpy( output->p_buffer, p_sys->stuffing_bytes, p_sys->stuffing_size );
941 p_sys->stuffing_size = 0;
943 size_t original = output->i_buffer;
944 size_t padded = (output->i_buffer + 15 ) & ~15;
945 size_t pad = padded - original;
948 p_sys->stuffing_size = 16-pad;
949 output->i_buffer -= p_sys->stuffing_size;
950 memcpy(p_sys->stuffing_bytes, &output->p_buffer[output->i_buffer], p_sys->stuffing_size);
953 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx,
954 output->p_buffer, output->i_buffer, NULL, 0 );
957 msg_Err( p_access, "Encryption failure: %s ", gpg_strerror(err) );
963 ssize_t val = write( p_sys->i_handle, output->p_buffer, output->i_buffer );
966 if ( errno == EINTR )
972 (float)(output->i_length / INT64_C(1000000) ) +
973 (float)(output->i_dts - p_sys->i_opendts) / CLOCK_FREQ;
975 if ( (size_t)val >= output->i_buffer )
977 block_t *p_next = output->p_next;
978 block_Release (output);
984 output->p_buffer += val;
985 output->i_buffer -= val;
992 /*****************************************************************************
993 * Write: standard write on a file descriptor.
994 *****************************************************************************/
995 static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
998 sout_access_out_sys_t *p_sys = p_access->p_sys;
1002 if( ( p_sys->b_splitanywhere || ( p_buffer->i_flags & BLOCK_FLAG_HEADER ) ) )
1004 if( unlikely( CheckSegmentChange( p_access, p_buffer ) != VLC_SUCCESS ) )
1006 block_ChainRelease ( p_buffer );
1010 ssize_t writevalue = writeSegment( p_access );
1011 if( unlikely( writevalue < 0 ) )
1013 block_ChainRelease ( p_buffer );
1016 i_write += writevalue;
1019 p_temp = p_buffer->p_next;
1020 p_buffer->p_next = NULL;
1021 block_ChainAppend( &p_sys->block_buffer, p_buffer );
1028 /*****************************************************************************
1029 * Seek: seek to a specific location in a file
1030 *****************************************************************************/
1031 static int Seek( sout_access_out_t *p_access, off_t i_pos )
1034 msg_Err( p_access, "livehttp sout access cannot seek" );