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 /*****************************************************************************
205 * Open: open the file
206 *****************************************************************************/
207 static int Open( vlc_object_t *p_this )
209 sout_access_out_t *p_access = (sout_access_out_t*)p_this;
210 sout_access_out_sys_t *p_sys;
213 config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
215 if( !p_access->psz_path )
217 msg_Err( p_access, "no file name specified" );
221 if( unlikely( !( p_sys = malloc ( sizeof( *p_sys ) ) ) ) )
224 p_sys->i_seglen = var_GetInteger( p_access, SOUT_CFG_PREFIX "seglen" );
225 /* Try to get within asked segment length */
226 p_sys->i_seglenm = CLOCK_FREQ * p_sys->i_seglen;
227 p_sys->block_buffer = NULL;
229 p_sys->i_numsegs = var_GetInteger( p_access, SOUT_CFG_PREFIX "numsegs" );
230 p_sys->b_splitanywhere = var_GetBool( p_access, SOUT_CFG_PREFIX "splitanywhere" );
231 p_sys->b_delsegs = var_GetBool( p_access, SOUT_CFG_PREFIX "delsegs" );
232 p_sys->b_ratecontrol = var_GetBool( p_access, SOUT_CFG_PREFIX "ratecontrol") ;
233 p_sys->b_caching = var_GetBool( p_access, SOUT_CFG_PREFIX "caching") ;
234 p_sys->b_generate_iv = var_GetBool( p_access, SOUT_CFG_PREFIX "generate-iv") ;
236 p_sys->segments_t = vlc_array_new();
238 p_sys->stuffing_size = 0;
239 p_sys->i_opendts = VLC_TS_INVALID;
241 p_sys->psz_indexPath = NULL;
242 psz_idx = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "index" );
246 psz_tmp = str_format_time( psz_idx );
253 path_sanitize( psz_tmp );
254 p_sys->psz_indexPath = psz_tmp;
255 vlc_unlink( p_sys->psz_indexPath );
258 p_sys->psz_indexUrl = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "index-url" );
259 p_sys->psz_keyfile = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "key-loadfile" );
260 p_sys->key_uri = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "key-uri" );
262 p_access->p_sys = p_sys;
264 if( p_sys->psz_keyfile && ( LoadCryptFile( p_access ) < 0 ) )
266 free( p_sys->psz_indexUrl );
267 free( p_sys->psz_indexPath );
269 msg_Err( p_access, "Encryption init failed" );
272 else if( !p_sys->psz_keyfile && ( CryptSetup( p_access, NULL ) < 0 ) )
274 free( p_sys->psz_indexUrl );
275 free( p_sys->psz_indexPath );
277 msg_Err( p_access, "Encryption init failed" );
281 p_sys->i_handle = -1;
282 p_sys->i_segment = 0;
283 p_sys->psz_cursegPath = NULL;
285 p_access->pf_write = Write;
286 p_access->pf_seek = Seek;
287 p_access->pf_control = Control;
292 /************************************************************************
293 * CryptSetup: Initialize encryption
294 ************************************************************************/
295 static int CryptSetup( sout_access_out_t *p_access, char *key_file )
297 sout_access_out_sys_t *p_sys = p_access->p_sys;
299 char *keyfile = NULL;
302 keyfile = strdup( key_file );
304 keyfile = var_InheritString( p_access, SOUT_CFG_PREFIX "key-file" );
306 if( !p_sys->key_uri ) /*No key uri, assume no encryption wanted*/
308 msg_Dbg( p_access, "No key uri, no encryption");
313 /*Setup encryption cipher*/
314 gcry_error_t err = gcry_cipher_open( &p_sys->aes_ctx, GCRY_CIPHER_AES,
315 GCRY_CIPHER_MODE_CBC, 0 );
318 msg_Err( p_access, "Openin AES Cipher failed: %s", gpg_strerror(err));
322 if( unlikely(keyfile == NULL) )
324 msg_Err( p_access, "No key-file, no encryption" );
328 int keyfd = vlc_open( keyfile, O_RDONLY | O_NONBLOCK );
329 if( unlikely( keyfd == -1 ) )
331 msg_Err( p_access, "Unable to open keyfile %s: %m", keyfile );
337 ssize_t keylen = read( keyfd, key, 16 );
342 msg_Err( p_access, "No key at least 16 octects (you provided %zd), no encryption", keylen );
346 err = gcry_cipher_setkey( p_sys->aes_ctx, key, 16 );
349 msg_Err(p_access, "Setting AES key failed: %s", gpg_strerror(err));
350 gcry_cipher_close( p_sys->aes_ctx);
354 if( p_sys->b_generate_iv )
355 vlc_rand_bytes( p_sys->aes_ivs, sizeof(uint8_t)*16);
361 /************************************************************************
362 * LoadCryptFile: Try to parse key_uri and keyfile-location from file
363 ************************************************************************/
364 static int LoadCryptFile( sout_access_out_t *p_access )
366 sout_access_out_sys_t *p_sys = p_access->p_sys;
368 FILE *stream = vlc_fopen( p_sys->psz_keyfile, "rt" );
369 char *key_file=NULL,*key_uri=NULL;
371 if( unlikely( stream == NULL ) )
373 msg_Err( p_access, "Unable to open keyloadfile %s: %m", p_sys->psz_keyfile );
379 ssize_t len = getline( &key_uri, &(size_t){0}, stream );
380 if( unlikely( len == -1 ) )
382 msg_Err( p_access, "Cannot read %s: %m", p_sys->psz_keyfile );
388 //Strip the newline from uri, maybe scanf would be better?
391 len = getline( &key_file, &(size_t){0}, stream );
392 if( unlikely( len == -1 ) )
394 msg_Err( p_access, "Cannot read %s: %m", p_sys->psz_keyfile );
402 // Strip the last newline from filename
403 key_file[len-1]='\0';
406 int returncode = VLC_SUCCESS;
407 if( !p_sys->key_uri || strcmp( p_sys->key_uri, key_uri ) )
411 free( p_sys->key_uri );
412 p_sys->key_uri = NULL;
414 p_sys->key_uri = strdup( key_uri );
415 returncode = CryptSetup( p_access, key_file );
422 /************************************************************************
423 * CryptKey: Set encryption IV to current segment number
424 ************************************************************************/
425 static int CryptKey( sout_access_out_t *p_access, uint32_t i_segment )
427 sout_access_out_sys_t *p_sys = p_access->p_sys;
429 if( !p_sys->b_generate_iv )
431 /* Use segment number as IV if randomIV isn't selected*/
432 memset( p_sys->aes_ivs, 0, 16 * sizeof(uint8_t));
433 p_sys->aes_ivs[15] = i_segment & 0xff;
434 p_sys->aes_ivs[14] = (i_segment >> 8 ) & 0xff;
435 p_sys->aes_ivs[13] = (i_segment >> 16 ) & 0xff;
436 p_sys->aes_ivs[12] = (i_segment >> 24 ) & 0xff;
439 gcry_error_t err = gcry_cipher_setiv( p_sys->aes_ctx,
443 msg_Err(p_access, "Setting AES IVs failed: %s", gpg_strerror(err) );
444 gcry_cipher_close( p_sys->aes_ctx);
451 #define SEG_NUMBER_PLACEHOLDER "#"
452 /*****************************************************************************
453 * formatSegmentPath: create segment path name based on seg #
454 *****************************************************************************/
455 static char *formatSegmentPath( char *psz_path, uint32_t i_seg, bool b_sanitize )
458 char *psz_firstNumSign;
460 if ( ! ( psz_result = str_format_time( psz_path ) ) )
463 psz_firstNumSign = psz_result + strcspn( psz_result, SEG_NUMBER_PLACEHOLDER );
464 if ( *psz_firstNumSign )
467 int i_cnt = strspn( psz_firstNumSign, SEG_NUMBER_PLACEHOLDER );
470 *psz_firstNumSign = '\0';
471 ret = asprintf( &psz_newResult, "%s%0*d%s", psz_result, i_cnt, i_seg, psz_firstNumSign + i_cnt );
475 psz_result = psz_newResult;
479 path_sanitize( psz_result );
484 static void destroySegment( output_segment_t *segment )
486 free( segment->psz_filename );
487 free( segment->psz_duration );
488 free( segment->psz_uri );
489 free( segment->psz_key_uri );
493 /************************************************************************
494 * segmentAmountNeeded: check that playlist has atleast 3*p_sys->i_seglength of segments
495 * return how many segments are needed for that (max of p_sys->i_segment )
496 ************************************************************************/
497 static uint32_t segmentAmountNeeded( sout_access_out_sys_t *p_sys )
499 float duration = .0f;
500 for( unsigned index = 1; index <= vlc_array_count( p_sys->segments_t ) ; index++ )
502 output_segment_t* segment = vlc_array_item_at_index( p_sys->segments_t, vlc_array_count( p_sys->segments_t ) - index );
503 duration += segment->f_seglength;
505 if( duration >= (float)( 3 * p_sys->i_seglen ) )
506 return __MAX(index, p_sys->i_numsegs);
508 return vlc_array_count( p_sys->segments_t )-1;
513 /************************************************************************
514 * isFirstItemRemovable: Check for draft 11 section 6.2.2
515 * check that the first item has been around outside playlist
516 * segment->f_seglength + p_sys->i_seglen before it is removed.
517 ************************************************************************/
518 static bool isFirstItemRemovable( sout_access_out_sys_t *p_sys, uint32_t i_firstseg, uint32_t i_index_offset )
520 float duration = .0f;
522 /* Check that segment has been out of playlist for seglenght + p_sys->i_seglen amount
523 * We check this by calculating duration of the items that replaced first item in playlist
525 for(int index=0; index < i_index_offset; index++ )
527 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, p_sys->i_segment - i_firstseg + index );
528 duration += segment->f_seglength;
530 output_segment_t *first = vlc_array_item_at_index( p_sys->segments_t, 0 );
532 return duration >= (first->f_seglength + (float)p_sys->i_seglen);
535 /************************************************************************
536 * updateIndexAndDel: If necessary, update index file & delete old segments
537 ************************************************************************/
538 static int updateIndexAndDel( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys, bool b_isend )
542 unsigned i_index_offset = 0;
544 if ( p_sys->i_numsegs == 0 || p_sys->i_segment < p_sys->i_numsegs )
548 unsigned numsegs = segmentAmountNeeded( p_sys );
549 i_firstseg = ( p_sys->i_segment - numsegs ) + 1;
550 i_index_offset = vlc_array_count( p_sys->segments_t ) - numsegs;
553 // First update index
554 if ( p_sys->psz_indexPath )
559 if ( asprintf( &psz_idxTmp, "%s.tmp", p_sys->psz_indexPath ) < 0)
562 fp = vlc_fopen( psz_idxTmp, "wt");
565 msg_Err( p_access, "cannot open index file `%s'", psz_idxTmp );
570 if ( fprintf( fp, "#EXTM3U\n#EXT-X-TARGETDURATION:%zu\n#EXT-X-VERSION:3\n#EXT-X-ALLOW-CACHE:%s"
571 "%s\n#EXT-X-MEDIA-SEQUENCE:%"PRIu32"\n", p_sys->i_seglen,
572 p_sys->b_caching ? "YES" : "NO",
573 p_sys->i_numsegs > 0 ? "" : b_isend ? "\n#EXT-X-PLAYLIST-TYPE:VOD" : "\n#EXT-X-PLAYLIST-TYPE:EVENT",
580 char *psz_current_uri=NULL;
583 for ( uint32_t i = i_firstseg; i <= p_sys->i_segment; i++ )
585 //scale to i_index_offset..numsegs + i_index_offset
586 uint32_t index = i - i_firstseg + i_index_offset;
588 output_segment_t *segment = (output_segment_t *)vlc_array_item_at_index( p_sys->segments_t, index );
589 if( p_sys->key_uri &&
590 ( !psz_current_uri || strcmp( psz_current_uri, segment->psz_key_uri ) )
594 free( psz_current_uri );
595 psz_current_uri = strdup( segment->psz_key_uri );
596 if( p_sys->b_generate_iv )
598 unsigned long long iv_hi = 0, iv_lo = 0;
599 for( unsigned short i = 0; i < 8; i++ )
601 iv_hi |= segment->aes_ivs[i] & 0xff;
603 iv_lo |= segment->aes_ivs[8+i] & 0xff;
606 ret = fprintf( fp, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\",IV=0X%16.16llx%16.16llx\n",
607 segment->psz_key_uri, iv_hi, iv_lo );
610 ret = fprintf( fp, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"\n", segment->psz_key_uri );
620 val = fprintf( fp, "#EXTINF:%s,\n%s\n", segment->psz_duration, segment->psz_uri);
627 free( psz_current_uri );
631 if ( fputs ( STR_ENDLIST, fp ) < 0)
641 val = vlc_rename ( psz_idxTmp, p_sys->psz_indexPath);
645 vlc_unlink( psz_idxTmp );
646 msg_Err( p_access, "Error moving LiveHttp index file" );
649 msg_Dbg( p_access, "LiveHttpIndexComplete: %s" , p_sys->psz_indexPath );
654 // Then take care of deletion
655 // Try to follow pantos draft 11 section 6.2.2
656 while( p_sys->b_delsegs && p_sys->i_numsegs &&
657 isFirstItemRemovable( p_sys, i_firstseg, i_index_offset )
660 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, 0 );
661 msg_Dbg( p_access, "Removing segment number %d", segment->i_segment_number );
662 vlc_array_remove( p_sys->segments_t, 0 );
664 if ( segment->psz_filename )
666 vlc_unlink( segment->psz_filename );
669 destroySegment( segment );
677 /*****************************************************************************
678 * closeCurrentSegment: Close the segment file
679 *****************************************************************************/
680 static void closeCurrentSegment( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys, bool b_isend )
682 if ( p_sys->i_handle >= 0 )
684 output_segment_t *segment = (output_segment_t *)vlc_array_item_at_index( p_sys->segments_t, vlc_array_count( p_sys->segments_t ) - 1 );
688 size_t pad = 16 - p_sys->stuffing_size;
689 memset(&p_sys->stuffing_bytes[p_sys->stuffing_size], pad, pad);
690 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx, p_sys->stuffing_bytes, 16, NULL, 0 );
693 msg_Err( p_access, "Couldn't encrypt 16 bytes: %s", gpg_strerror(err) );
695 int ret = write( p_sys->i_handle, p_sys->stuffing_bytes, 16 );
697 msg_Err( p_access, "Couldn't write 16 bytes" );
699 p_sys->stuffing_size = 0;
703 close( p_sys->i_handle );
704 p_sys->i_handle = -1;
706 if( ! ( us_asprintf( &segment->psz_duration, "%.2f", p_sys->f_seglen ) ) )
708 msg_Err( p_access, "Couldn't set duration on closed segment");
711 segment->f_seglength = p_sys->f_seglen;
713 segment->i_segment_number = p_sys->i_segment;
715 if ( p_sys->psz_cursegPath )
717 msg_Dbg( p_access, "LiveHttpSegmentComplete: %s (%"PRIu32")" , p_sys->psz_cursegPath, p_sys->i_segment );
718 free( p_sys->psz_cursegPath );
719 p_sys->psz_cursegPath = 0;
720 updateIndexAndDel( p_access, p_sys, b_isend );
725 /*****************************************************************************
726 * Close: close the target
727 *****************************************************************************/
728 static void Close( vlc_object_t * p_this )
730 sout_access_out_t *p_access = (sout_access_out_t*)p_this;
731 sout_access_out_sys_t *p_sys = p_access->p_sys;
733 msg_Dbg( p_access, "Flushing buffer to last file");
734 bool crypted = false;
735 while( p_sys->block_buffer )
737 if( p_sys->key_uri && !crypted)
739 if( p_sys->stuffing_size )
741 p_sys->block_buffer = block_Realloc( p_sys->block_buffer, p_sys->stuffing_size, p_sys->block_buffer->i_buffer );
742 if( unlikely(!p_sys->block_buffer) )
744 memcpy( p_sys->block_buffer->p_buffer, p_sys->stuffing_bytes, p_sys->stuffing_size );
745 p_sys->stuffing_size = 0;
747 size_t original = p_sys->block_buffer->i_buffer;
748 size_t padded = (original + 15 ) & ~15;
749 size_t pad = padded - original;
752 p_sys->stuffing_size = 16 - pad;
753 p_sys->block_buffer->i_buffer -= p_sys->stuffing_size;
754 memcpy( p_sys->stuffing_bytes, &p_sys->block_buffer->p_buffer[p_sys->block_buffer->i_buffer], p_sys->stuffing_size );
757 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx,
758 p_sys->block_buffer->p_buffer, p_sys->block_buffer->i_buffer, NULL, 0 );
761 msg_Err( p_access, "Encryption failure: %s ", gpg_strerror(err) );
766 ssize_t val = write( p_sys->i_handle, p_sys->block_buffer->p_buffer, p_sys->block_buffer->i_buffer );
769 if ( errno == EINTR )
771 block_ChainRelease ( p_sys->block_buffer);
774 if( !p_sys->block_buffer->p_next )
776 p_sys->f_seglen = (float)( p_sys->block_buffer->i_length / (1000000)) +
777 (float)(p_sys->block_buffer->i_dts - p_sys->i_opendts) / CLOCK_FREQ;
780 if ( likely( (size_t)val >= p_sys->block_buffer->i_buffer ) )
782 block_t *p_next = p_sys->block_buffer->p_next;
783 block_Release (p_sys->block_buffer);
784 p_sys->block_buffer = p_next;
789 p_sys->block_buffer->p_buffer += val;
790 p_sys->block_buffer->i_buffer -= val;
794 closeCurrentSegment( p_access, p_sys, true );
798 gcry_cipher_close( p_sys->aes_ctx );
799 free( p_sys->key_uri );
802 while( vlc_array_count( p_sys->segments_t ) > 0 )
804 output_segment_t *segment = vlc_array_item_at_index( p_sys->segments_t, 0 );
805 vlc_array_remove( p_sys->segments_t, 0 );
806 destroySegment( segment );
808 vlc_array_destroy( p_sys->segments_t );
810 free( p_sys->psz_indexUrl );
811 free( p_sys->psz_indexPath );
814 msg_Dbg( p_access, "livehttp access output closed" );
817 static int Control( sout_access_out_t *p_access, int i_query, va_list args )
819 sout_access_out_sys_t *p_sys = p_access->p_sys;
823 case ACCESS_OUT_CONTROLS_PACE:
825 bool *pb = va_arg( args, bool * );
826 *pb = !p_sys->b_ratecontrol;
837 /*****************************************************************************
838 * openNextFile: Open the segment file
839 *****************************************************************************/
840 static ssize_t openNextFile( sout_access_out_t *p_access, sout_access_out_sys_t *p_sys )
844 uint32_t i_newseg = p_sys->i_segment + 1;
846 /* Create segment and fill it info that we can (everything excluding duration */
847 output_segment_t *segment = (output_segment_t*)malloc(sizeof(output_segment_t));
848 if( unlikely( !segment ) )
851 memset( segment, 0 , sizeof( output_segment_t ) );
853 segment->i_segment_number = i_newseg;
854 segment->psz_filename = formatSegmentPath( p_access->psz_path, i_newseg, true );
855 char *psz_idxFormat = p_sys->psz_indexUrl ? p_sys->psz_indexUrl : p_access->psz_path;
856 segment->psz_uri = formatSegmentPath( psz_idxFormat , i_newseg, false );
858 if ( unlikely( !segment->psz_filename ) )
860 msg_Err( p_access, "Format segmentpath failed");
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;
895 /*****************************************************************************
896 * Write: standard write on a file descriptor.
897 *****************************************************************************/
898 static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
901 sout_access_out_sys_t *p_sys = p_access->p_sys;
906 if ( ( p_sys->b_splitanywhere || ( p_buffer->i_flags & BLOCK_FLAG_HEADER ) ) )
908 bool crypted = false;
909 block_t *output = p_sys->block_buffer;
910 p_sys->block_buffer = NULL;
913 if( p_sys->i_handle > 0 &&
914 ( p_buffer->i_dts - p_sys->i_opendts +
915 p_buffer->i_length * CLOCK_FREQ / INT64_C(1000000)
916 ) >= p_sys->i_seglenm )
917 closeCurrentSegment( p_access, p_sys, false );
919 if ( p_sys->i_handle < 0 )
921 p_sys->i_opendts = output ? output->i_dts : p_buffer->i_dts;
922 //For first segment we can get negative duration otherwise...?
923 if( ( p_sys->i_opendts != VLC_TS_INVALID ) &&
924 ( p_buffer->i_dts < p_sys->i_opendts ) )
925 p_sys->i_opendts = p_buffer->i_dts;
926 if ( openNextFile( p_access, p_sys ) < 0 )
932 if( p_sys->key_uri && !crypted )
934 if( p_sys->stuffing_size )
936 output = block_Realloc( output, p_sys->stuffing_size, output->i_buffer );
937 if( unlikely(!output ) )
939 memcpy( output->p_buffer, p_sys->stuffing_bytes, p_sys->stuffing_size );
940 p_sys->stuffing_size = 0;
942 size_t original = output->i_buffer;
943 size_t padded = (output->i_buffer + 15 ) & ~15;
944 size_t pad = padded - original;
947 p_sys->stuffing_size = 16-pad;
948 output->i_buffer -= p_sys->stuffing_size;
949 memcpy(p_sys->stuffing_bytes, &output->p_buffer[output->i_buffer], p_sys->stuffing_size);
952 gcry_error_t err = gcry_cipher_encrypt( p_sys->aes_ctx,
953 output->p_buffer, output->i_buffer, NULL, 0 );
956 msg_Err( p_access, "Encryption failure: %s ", gpg_strerror(err) );
962 ssize_t val = write( p_sys->i_handle, output->p_buffer, output->i_buffer );
965 if ( errno == EINTR )
967 block_ChainRelease ( p_buffer );
971 (float)output->i_length / INT64_C(1000000) +
972 (float)(output->i_dts - p_sys->i_opendts) / CLOCK_FREQ;
974 if ( (size_t)val >= output->i_buffer )
976 block_t *p_next = output->p_next;
977 block_Release (output);
983 output->p_buffer += val;
984 output->i_buffer -= val;
990 p_temp = p_buffer->p_next;
991 p_buffer->p_next = NULL;
992 block_ChainAppend( &p_sys->block_buffer, p_buffer );
999 /*****************************************************************************
1000 * Seek: seek to a specific location in a file
1001 *****************************************************************************/
1002 static int Seek( sout_access_out_t *p_access, off_t i_pos )
1005 msg_Err( p_access, "livehttp sout access cannot seek" );