1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 1999-2004 the VideoLAN team
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_strings.h>
34 #include <vlc_charset.h>
41 #include "input_internal.h"
46 * - tune the 2 methods (block/stream)
47 * - compute cost for seek
48 * - improve stream mode seeking with closest segments
50 * - Maybe remove (block/stream) in favour of immediate
55 * One linked list of data read
57 * More complex scheme using mutliple track to avoid seeking
58 * - using directly the access (only indirection for peeking).
59 * This method is known to introduce much less latency.
60 * It should probably defaulted (instead of the stream method (2)).
63 /* How many tracks we have, currently only used for stream mode */
64 #ifdef OPTIMIZE_MEMORY
65 # define STREAM_CACHE_TRACK 1
66 /* Max size of our cache 128Ko per track */
67 # define STREAM_CACHE_SIZE (STREAM_CACHE_TRACK*1024*128)
69 # define STREAM_CACHE_TRACK 3
70 /* Max size of our cache 4Mo per track */
71 # define STREAM_CACHE_SIZE (4*STREAM_CACHE_TRACK*1024*1024)
74 /* How many data we try to prebuffer */
75 #define STREAM_CACHE_PREBUFFER_SIZE (32767)
76 /* Maximum time we take to pre-buffer */
77 #define STREAM_CACHE_PREBUFFER_LENGTH (100*1000)
79 /* Method1: Simple, for pf_block.
80 * We get blocks and put them in the linked list.
81 * We release blocks once the total size is bigger than CACHE_BLOCK_SIZE
84 /* Method2: A bit more complex, for pf_read
85 * - We use ring buffers, only one if unseekable, all if seekable
86 * - Upon seek date current ring, then search if one ring match the pos,
87 * yes: switch to it, seek the access to match the end of the ring
88 * no: search the ring with i_end the closer to i_pos,
89 * if close enough, read data and use this ring
90 * else use the oldest ring, seek and use it.
92 * TODO: - with access non seekable: use all space available for only one ring, but
93 * we have to support seekable/non-seekable switch on the fly.
94 * - compute a good value for i_read_size
97 #define STREAM_READ_ATONCE 32767
98 #define STREAM_CACHE_TRACK_SIZE (STREAM_CACHE_SIZE/STREAM_CACHE_TRACK)
118 typedef enum stream_read_method_t
120 STREAM_METHOD_IMMEDIATE,
123 } stream_read_method_t;
129 stream_read_method_t method; /* method to use */
131 int64_t i_pos; /* Current reading offset */
133 /* Method 1: pf_block */
136 int64_t i_start; /* Offset of block for p_first */
137 int64_t i_offset; /* Offset for data in p_current */
138 block_t *p_current; /* Current block */
140 int i_size; /* Total amount of data in the list */
146 /* Method 2: for pf_read */
149 int i_offset; /* Buffer offset in the current track */
150 int i_tk; /* Current track */
151 stream_track_t tk[STREAM_CACHE_TRACK];
157 int i_used; /* Used since last read */
162 /* Method 3: for pf_read */
169 /* Peek temporary buffer */
173 /* Stat for both method */
176 bool b_fastseek; /* From access */
178 /* Stat about reading data */
179 int64_t i_read_count;
183 /* Stat about seek */
191 access_entry_t **list;
193 access_t *p_list_access;
195 /* Preparse mode ? */
203 FILE *f; /* TODO it could be replaced by access_output_t one day */
209 static int AStreamReadBlock( stream_t *s, void *p_read, unsigned int i_read );
210 static int AStreamPeekBlock( stream_t *s, const uint8_t **p_peek, unsigned int i_read );
211 static int AStreamSeekBlock( stream_t *s, int64_t i_pos );
212 static void AStreamPrebufferBlock( stream_t *s );
213 static block_t *AReadBlock( stream_t *s, bool *pb_eof );
216 static int AStreamReadStream( stream_t *s, void *p_read, unsigned int i_read );
217 static int AStreamPeekStream( stream_t *s, const uint8_t **pp_peek, unsigned int i_read );
218 static int AStreamSeekStream( stream_t *s, int64_t i_pos );
219 static void AStreamPrebufferStream( stream_t *s );
220 static int AReadStream( stream_t *s, void *p_read, unsigned int i_read );
223 static int AStreamReadImmediate( stream_t *s, void *p_read, unsigned int i_read );
224 static int AStreamPeekImmediate( stream_t *s, const uint8_t **pp_peek, unsigned int i_read );
225 static int AStreamSeekImmediate( stream_t *s, int64_t i_pos );
228 static int AStreamControl( stream_t *s, int i_query, va_list );
229 static void AStreamDestroy( stream_t *s );
230 static void UStreamDestroy( stream_t *s );
231 static int ASeek( stream_t *s, int64_t i_pos );
232 static int ARecordSetState( stream_t *s, bool b_record, const char *psz_extension );
233 static void ARecordWrite( stream_t *s, const uint8_t *p_buffer, size_t i_buffer );
235 /****************************************************************************
237 ****************************************************************************/
239 static inline int64_t stream_buffered_size( stream_t *s )
241 return s->p_sys->immediate.i_end;
244 static inline void stream_buffer_empty( stream_t *s, int length )
246 length = __MAX( stream_buffered_size( s ), length );
249 memmove( s->p_sys->immediate.p_buffer,
250 s->p_sys->immediate.p_buffer + length,
251 stream_buffered_size( s ) - length );
253 s->p_sys->immediate.i_end -= length;
256 static inline void stream_buffer_fill( stream_t *s, int length )
258 s->p_sys->immediate.i_end += length;
261 static inline uint8_t * stream_buffer( stream_t *s )
263 return s->p_sys->immediate.p_buffer;
266 /****************************************************************************
267 * stream_CommonNew: create an empty stream structure
268 ****************************************************************************/
269 stream_t *stream_CommonNew( vlc_object_t *p_obj )
271 return (stream_t *)vlc_custom_create( p_obj, sizeof(stream_t),
272 VLC_OBJECT_GENERIC, "stream" );
275 /****************************************************************************
276 * stream_UrlNew: create a stream from a access
277 ****************************************************************************/
278 stream_t *__stream_UrlNew( vlc_object_t *p_parent, const char *psz_url )
280 const char *psz_access, *psz_demux;
288 char psz_dup[strlen( psz_url ) + 1];
289 strcpy( psz_dup, psz_url );
290 input_SplitMRL( &psz_access, &psz_demux, &psz_path, psz_dup );
292 /* Now try a real access */
293 p_access = access_New( p_parent, psz_access, psz_demux, psz_path );
295 if( p_access == NULL )
297 msg_Err( p_parent, "no suitable access module for `%s'", psz_url );
301 if( !( p_res = stream_AccessNew( p_access, true ) ) )
303 access_Delete( p_access );
307 p_res->pf_destroy = UStreamDestroy;
311 stream_t *stream_AccessNew( access_t *p_access, bool b_quick )
313 stream_t *s = stream_CommonNew( VLC_OBJECT(p_access) );
315 char *psz_list = NULL;
320 s->p_sys = p_sys = malloc( sizeof( stream_sys_t ) );
323 vlc_object_release( s );
327 /* Attach it now, needed for b_die */
328 vlc_object_attach( s, p_access );
330 s->pf_read = NULL; /* Set up later */
332 s->pf_control = AStreamControl;
333 s->pf_destroy = AStreamDestroy;
335 /* UTF16 and UTF32 text file conversion */
337 s->b_little_endian = false;
338 s->conv = (vlc_iconv_t)(-1);
341 p_sys->p_access = p_access;
342 if( p_access->pf_block )
343 p_sys->method = STREAM_METHOD_BLOCK;
344 else if( var_CreateGetBool( s, "use-stream-immediate" ) )
345 p_sys->method = STREAM_METHOD_IMMEDIATE;
347 p_sys->method = STREAM_METHOD_STREAM;
349 p_sys->record.b_active = false;
351 p_sys->i_pos = p_access->info.i_pos;
354 access_Control( p_access, ACCESS_CAN_FASTSEEK, &p_sys->stat.b_fastseek );
355 p_sys->stat.i_bytes = 0;
356 p_sys->stat.i_read_time = 0;
357 p_sys->stat.i_read_count = 0;
358 p_sys->stat.i_seek_count = 0;
359 p_sys->stat.i_seek_time = 0;
363 p_sys->i_list_index = 0;
364 p_sys->p_list_access = 0;
366 p_sys->b_quick = b_quick;
368 /* Get the additional list of inputs if any (for concatenation) */
369 if( (psz_list = var_CreateGetString( s, "input-list" )) && *psz_list )
371 access_entry_t *p_entry = malloc( sizeof(access_entry_t) );
372 if( p_entry == NULL )
374 char *psz_name, *psz_parser = psz_name = psz_list;
376 p_sys->p_list_access = p_access;
377 p_entry->i_size = p_access->info.i_size;
378 p_entry->psz_path = strdup( p_access->psz_path );
379 if( p_entry->psz_path == NULL )
384 TAB_APPEND( p_sys->i_list, p_sys->list, p_entry );
385 msg_Dbg( p_access, "adding file `%s', (%"PRId64" bytes)",
386 p_entry->psz_path, p_access->info.i_size );
388 while( psz_name && *psz_name )
390 psz_parser = strchr( psz_name, ',' );
391 if( psz_parser ) *psz_parser = 0;
393 psz_name = strdup( psz_name );
396 access_t *p_tmp = access_New( p_access, p_access->psz_access,
401 psz_name = psz_parser;
402 if( psz_name ) psz_name++;
406 msg_Dbg( p_access, "adding file `%s', (%"PRId64" bytes)",
407 psz_name, p_tmp->info.i_size );
409 p_entry = malloc( sizeof(access_entry_t) );
410 if( p_entry == NULL )
412 p_entry->i_size = p_tmp->info.i_size;
413 p_entry->psz_path = psz_name;
414 TAB_APPEND( p_sys->i_list, p_sys->list, p_entry );
416 access_Delete( p_tmp );
419 psz_name = psz_parser;
420 if( psz_name ) psz_name++;
423 FREENULL( psz_list );
427 p_sys->p_peek = NULL;
429 if( p_sys->method == STREAM_METHOD_BLOCK )
431 msg_Dbg( s, "Using AStream*Block" );
432 s->pf_read = AStreamReadBlock;
433 s->pf_peek = AStreamPeekBlock;
435 /* Init all fields of p_sys->block */
436 p_sys->block.i_start = p_sys->i_pos;
437 p_sys->block.i_offset = 0;
438 p_sys->block.p_current = NULL;
439 p_sys->block.i_size = 0;
440 p_sys->block.p_first = NULL;
441 p_sys->block.pp_last = &p_sys->block.p_first;
443 /* Do the prebuffering */
444 AStreamPrebufferBlock( s );
446 if( p_sys->block.i_size <= 0 )
448 msg_Err( s, "cannot pre fill buffer" );
452 else if( p_sys->method == STREAM_METHOD_IMMEDIATE )
454 msg_Dbg( s, "Using AStream*Immediate" );
456 s->pf_read = AStreamReadImmediate;
457 s->pf_peek = AStreamPeekImmediate;
459 /* Allocate/Setup our tracks (useful to peek)*/
460 p_sys->immediate.i_end = 0;
461 p_sys->immediate.p_buffer = malloc( STREAM_CACHE_SIZE );
463 if( p_sys->immediate.p_buffer == NULL )
466 msg_Dbg( s, "p_buffer %p-%p",
467 p_sys->immediate.p_buffer,
468 &p_sys->immediate.p_buffer[STREAM_CACHE_SIZE] );
474 assert( p_sys->method == STREAM_METHOD_STREAM );
476 msg_Dbg( s, "Using AStream*Stream" );
478 s->pf_read = AStreamReadStream;
479 s->pf_peek = AStreamPeekStream;
481 /* Allocate/Setup our tracks */
482 p_sys->stream.i_offset = 0;
483 p_sys->stream.i_tk = 0;
484 p_sys->stream.p_buffer = malloc( STREAM_CACHE_SIZE );
485 if( p_sys->stream.p_buffer == NULL )
487 p_sys->stream.i_used = 0;
488 access_Control( p_access, ACCESS_GET_MTU,
489 &p_sys->stream.i_read_size );
490 if( p_sys->stream.i_read_size <= 0 )
491 p_sys->stream.i_read_size = STREAM_READ_ATONCE;
492 else if( p_sys->stream.i_read_size <= 256 )
493 p_sys->stream.i_read_size = 256;
495 for( i = 0; i < STREAM_CACHE_TRACK; i++ )
497 p_sys->stream.tk[i].i_date = 0;
498 p_sys->stream.tk[i].i_start = p_sys->i_pos;
499 p_sys->stream.tk[i].i_end = p_sys->i_pos;
500 p_sys->stream.tk[i].p_buffer=
501 &p_sys->stream.p_buffer[i * STREAM_CACHE_TRACK_SIZE];
504 /* Do the prebuffering */
505 AStreamPrebufferStream( s );
507 if( p_sys->stream.tk[p_sys->stream.i_tk].i_end <= 0 )
509 msg_Err( s, "cannot pre fill buffer" );
517 if( p_sys->method == STREAM_METHOD_BLOCK )
523 free( p_sys->stream.p_buffer );
525 while( p_sys->i_list > 0 )
526 free( p_sys->list[--(p_sys->i_list)] );
530 vlc_object_detach( s );
531 vlc_object_release( s );
535 /****************************************************************************
537 ****************************************************************************/
538 static void AStreamDestroy( stream_t *s )
540 stream_sys_t *p_sys = s->p_sys;
542 vlc_object_detach( s );
544 if( p_sys->record.b_active )
545 ARecordSetState( s, false, NULL );
547 if( p_sys->method == STREAM_METHOD_BLOCK )
548 block_ChainRelease( p_sys->block.p_first );
549 else if( p_sys->method == STREAM_METHOD_IMMEDIATE )
550 free( p_sys->immediate.p_buffer );
552 free( p_sys->stream.p_buffer );
554 free( p_sys->p_peek );
556 if( p_sys->p_list_access && p_sys->p_list_access != p_sys->p_access )
557 access_Delete( p_sys->p_list_access );
559 while( p_sys->i_list-- )
561 free( p_sys->list[p_sys->i_list]->psz_path );
562 free( p_sys->list[p_sys->i_list] );
568 vlc_object_release( s );
571 static void UStreamDestroy( stream_t *s )
573 access_t *p_access = (access_t *)s->p_parent;
575 access_Delete( p_access );
578 /****************************************************************************
579 * stream_AccessReset:
580 ****************************************************************************/
581 void stream_AccessReset( stream_t *s )
583 stream_sys_t *p_sys = s->p_sys;
585 p_sys->i_pos = p_sys->p_access->info.i_pos;
587 if( p_sys->method == STREAM_METHOD_BLOCK )
589 block_ChainRelease( p_sys->block.p_first );
591 /* Init all fields of p_sys->block */
592 p_sys->block.i_start = p_sys->i_pos;
593 p_sys->block.i_offset = 0;
594 p_sys->block.p_current = NULL;
595 p_sys->block.i_size = 0;
596 p_sys->block.p_first = NULL;
597 p_sys->block.pp_last = &p_sys->block.p_first;
599 /* Do the prebuffering */
600 AStreamPrebufferBlock( s );
602 else if( p_sys->method == STREAM_METHOD_IMMEDIATE )
604 stream_buffer_empty( s, stream_buffered_size( s ) );
610 assert( p_sys->method == STREAM_METHOD_STREAM );
612 /* Setup our tracks */
613 p_sys->stream.i_offset = 0;
614 p_sys->stream.i_tk = 0;
615 p_sys->stream.i_used = 0;
617 for( i = 0; i < STREAM_CACHE_TRACK; i++ )
619 p_sys->stream.tk[i].i_date = 0;
620 p_sys->stream.tk[i].i_start = p_sys->i_pos;
621 p_sys->stream.tk[i].i_end = p_sys->i_pos;
624 /* Do the prebuffering */
625 AStreamPrebufferStream( s );
629 /****************************************************************************
630 * stream_AccessUpdate:
631 ****************************************************************************/
632 void stream_AccessUpdate( stream_t *s )
634 stream_sys_t *p_sys = s->p_sys;
636 p_sys->i_pos = p_sys->p_access->info.i_pos;
641 for( i = 0; i < p_sys->i_list_index; i++ )
643 p_sys->i_pos += p_sys->list[i]->i_size;
648 /****************************************************************************
650 ****************************************************************************/
651 static int AStreamControl( stream_t *s, int i_query, va_list args )
653 stream_sys_t *p_sys = s->p_sys;
654 access_t *p_access = p_sys->p_access;
658 const char *psz_string;
659 int64_t *pi_64, i_64;
664 case STREAM_GET_SIZE:
665 pi_64 = (int64_t*)va_arg( args, int64_t * );
666 if( s->p_sys->i_list )
670 for( i = 0; i < s->p_sys->i_list; i++ )
671 *pi_64 += s->p_sys->list[i]->i_size;
674 *pi_64 = p_access->info.i_size;
677 case STREAM_CAN_SEEK:
678 p_bool = (bool*)va_arg( args, bool * );
679 access_Control( p_access, ACCESS_CAN_SEEK, p_bool );
682 case STREAM_CAN_FASTSEEK:
683 p_bool = (bool*)va_arg( args, bool * );
684 access_Control( p_access, ACCESS_CAN_FASTSEEK, p_bool );
687 case STREAM_GET_POSITION:
688 pi_64 = (int64_t*)va_arg( args, int64_t * );
689 *pi_64 = p_sys->i_pos;
692 case STREAM_SET_POSITION:
693 i_64 = (int64_t)va_arg( args, int64_t );
694 switch( p_sys->method )
696 case STREAM_METHOD_BLOCK:
697 return AStreamSeekBlock( s, i_64 );
698 case STREAM_METHOD_IMMEDIATE:
699 return AStreamSeekImmediate( s, i_64 );
700 case STREAM_METHOD_STREAM:
701 return AStreamSeekStream( s, i_64 );
710 case STREAM_CONTROL_ACCESS:
711 i_int = (int) va_arg( args, int );
712 if( i_int != ACCESS_SET_PRIVATE_ID_STATE &&
713 i_int != ACCESS_SET_PRIVATE_ID_CA &&
714 i_int != ACCESS_GET_PRIVATE_ID_STATE )
716 msg_Err( s, "Hey, what are you thinking ?"
717 "DON'T USE STREAM_CONTROL_ACCESS !!!" );
720 return access_vaControl( p_access, i_int, args );
722 case STREAM_GET_CONTENT_TYPE:
723 return access_Control( p_access, ACCESS_GET_CONTENT_TYPE,
724 va_arg( args, char ** ) );
725 case STREAM_SET_RECORD_STATE:
726 b_bool = (bool)va_arg( args, int );
729 psz_string = (const char*)va_arg( args, const char* );
730 return ARecordSetState( s, b_bool, psz_string );
733 msg_Err( s, "invalid stream_vaControl query=0x%x", i_query );
739 /****************************************************************************
740 * ARecord*: record stream functions
741 ****************************************************************************/
742 static int ARecordStart( stream_t *s, const char *psz_extension )
744 stream_sys_t *p_sys = s->p_sys;
751 psz_extension = "dat";
754 char *psz_path = var_CreateGetString( s, "input-record-path" );
755 if( !psz_path || *psz_path == '\0' )
758 psz_path = strdup( config_GetHomeDir() );
765 * TODO allow prefix configuration */
766 psz_file = input_CreateFilename( VLC_OBJECT(s), psz_path, INPUT_RECORD_PREFIX, psz_extension );
773 f = utf8_fopen( psz_file, "wb" );
779 msg_Dbg( s, "Recording into %s", psz_file );
784 p_sys->record.b_active = true;
785 p_sys->record.b_error = false;
788 static int ARecordStop( stream_t *s )
790 stream_sys_t *p_sys = s->p_sys;
792 assert( p_sys->record.b_active );
794 msg_Dbg( s, "Recording completed" );
795 fclose( p_sys->record.f );
796 p_sys->record.b_active = false;
800 static int ARecordSetState( stream_t *s, bool b_record, const char *psz_extension )
802 stream_sys_t *p_sys = s->p_sys;
804 if( !!p_sys->record.b_active == !!b_record )
808 return ARecordStart( s, psz_extension );
810 return ARecordStop( s );
812 static void ARecordWrite( stream_t *s, const uint8_t *p_buffer, size_t i_buffer )
814 stream_sys_t *p_sys = s->p_sys;
816 assert( p_sys->record.b_active );
820 const bool b_previous_error = p_sys->record.b_error;
821 const size_t i_written = fwrite( p_buffer, 1, i_buffer, p_sys->record.f );
823 p_sys->record.b_error = i_written != i_buffer;
825 /* TODO maybe a intf_UserError or something like that ? */
826 if( p_sys->record.b_error && !b_previous_error )
827 msg_Err( s, "Failed to record data (begin)" );
828 else if( !p_sys->record.b_error && b_previous_error )
829 msg_Err( s, "Failed to record data (end)" );
833 /****************************************************************************
835 ****************************************************************************/
836 static void AStreamPrebufferBlock( stream_t *s )
838 stream_sys_t *p_sys = s->p_sys;
839 access_t *p_access = p_sys->p_access;
844 msg_Dbg( s, "pre buffering" );
848 int64_t i_date = mdate();
852 if( s->b_die || p_sys->block.i_size > STREAM_CACHE_PREBUFFER_SIZE ||
853 ( i_first > 0 && i_first + STREAM_CACHE_PREBUFFER_LENGTH < i_date ) )
858 p_sys->stat.i_bytes = p_sys->block.i_size;
859 p_sys->stat.i_read_time = i_date - i_start;
860 i_byterate = ( INT64_C(1000000) * p_sys->stat.i_bytes ) /
861 (p_sys->stat.i_read_time + 1);
863 msg_Dbg( s, "prebuffering done %"PRId64" bytes in %"PRId64"s - "
864 "%"PRId64" kbytes/s",
866 p_sys->stat.i_read_time / INT64_C(1000000),
872 if( ( b = AReadBlock( s, &b_eof ) ) == NULL )
881 /* Append the block */
882 p_sys->block.i_size += b->i_buffer;
883 *p_sys->block.pp_last = b;
884 p_sys->block.pp_last = &b->p_next;
886 p_sys->stat.i_read_count++;
890 if( p_access->info.b_prebuffered )
892 /* Access has already prebufferred - update stats and exit */
893 p_sys->stat.i_bytes = p_sys->block.i_size;
894 p_sys->stat.i_read_time = mdate() - i_start;
901 msg_Dbg( s, "received first data for our buffer");
906 p_sys->block.p_current = p_sys->block.p_first;
909 static int AStreamRefillBlock( stream_t *s );
911 static int AStreamReadBlock( stream_t *s, void *p_read, unsigned int i_read )
913 stream_sys_t *p_sys = s->p_sys;
915 uint8_t *p_data = p_read;
916 uint8_t *p_record = p_data;
917 unsigned int i_data = 0;
920 if( p_sys->block.p_current == NULL )
923 if( p_sys->record.b_active && !p_data )
924 p_record = p_data = malloc( i_read );
928 /* seek within this stream if possible, else use plain old read and discard */
929 stream_sys_t *p_sys = s->p_sys;
930 access_t *p_access = p_sys->p_access;
932 access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
934 return AStreamSeekBlock( s, p_sys->i_pos + i_read ) ? 0 : i_read;
937 while( i_data < i_read )
940 p_sys->block.p_current->i_buffer - p_sys->block.i_offset;
941 unsigned int i_copy = __MIN( (unsigned int)__MAX(i_current,0), i_read - i_data);
947 &p_sys->block.p_current->p_buffer[p_sys->block.i_offset],
953 p_sys->block.i_offset += i_copy;
954 if( p_sys->block.i_offset >= p_sys->block.p_current->i_buffer )
956 /* Current block is now empty, switch to next */
957 if( p_sys->block.p_current )
959 p_sys->block.i_offset = 0;
960 p_sys->block.p_current = p_sys->block.p_current->p_next;
962 /*Get a new block if needed */
963 if( !p_sys->block.p_current && AStreamRefillBlock( s ) )
970 if( p_sys->record.b_active )
972 if( i_data > 0 && p_record != NULL)
973 ARecordWrite( s, p_record, i_data );
978 p_sys->i_pos += i_data;
982 static int AStreamPeekBlock( stream_t *s, const uint8_t **pp_peek, unsigned int i_read )
984 stream_sys_t *p_sys = s->p_sys;
986 unsigned int i_data = 0;
988 unsigned int i_offset;
990 if( p_sys->block.p_current == NULL ) return 0; /* EOF */
992 /* We can directly give a pointer over our buffer */
993 if( i_read <= p_sys->block.p_current->i_buffer - p_sys->block.i_offset )
995 *pp_peek = &p_sys->block.p_current->p_buffer[p_sys->block.i_offset];
999 /* We need to create a local copy */
1000 if( p_sys->i_peek < i_read )
1002 p_sys->p_peek = realloc( p_sys->p_peek, i_read );
1003 if( !p_sys->p_peek )
1008 p_sys->i_peek = i_read;
1011 /* Fill enough data */
1012 while( p_sys->block.i_size - (p_sys->i_pos - p_sys->block.i_start)
1015 block_t **pp_last = p_sys->block.pp_last;
1017 if( AStreamRefillBlock( s ) ) break;
1019 /* Our buffer are probably filled enough, don't try anymore */
1020 if( pp_last == p_sys->block.pp_last ) break;
1023 /* Copy what we have */
1024 b = p_sys->block.p_current;
1025 i_offset = p_sys->block.i_offset;
1026 p_data = p_sys->p_peek;
1028 while( b && i_data < i_read )
1030 unsigned int i_current = __MAX(b->i_buffer - i_offset,0);
1031 int i_copy = __MIN( i_current, i_read - i_data );
1033 memcpy( p_data, &b->p_buffer[i_offset], i_copy );
1038 if( i_offset >= b->i_buffer )
1045 *pp_peek = p_sys->p_peek;
1049 static int AStreamSeekBlock( stream_t *s, int64_t i_pos )
1051 stream_sys_t *p_sys = s->p_sys;
1052 access_t *p_access = p_sys->p_access;
1053 int64_t i_offset = i_pos - p_sys->block.i_start;
1056 /* We already have thoses data, just update p_current/i_offset */
1057 if( i_offset >= 0 && i_offset < p_sys->block.i_size )
1059 block_t *b = p_sys->block.p_first;
1062 while( i_current + b->i_buffer < i_offset )
1064 i_current += b->i_buffer;
1068 p_sys->block.p_current = b;
1069 p_sys->block.i_offset = i_offset - i_current;
1071 p_sys->i_pos = i_pos;
1076 /* We may need to seek or to read data */
1080 access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
1084 msg_Err( s, "backward seeking impossible (access not seekable)" );
1085 return VLC_EGENERIC;
1092 bool b_aseek, b_aseekfast;
1094 access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
1095 access_Control( p_access, ACCESS_CAN_FASTSEEK, &b_aseekfast );
1100 msg_Warn( s, "%"PRId64" bytes need to be skipped "
1101 "(access non seekable)",
1102 i_offset - p_sys->block.i_size );
1106 int64_t i_skip = i_offset - p_sys->block.i_size;
1108 /* Avg bytes per packets */
1109 int i_avg = p_sys->stat.i_bytes / p_sys->stat.i_read_count;
1110 /* TODO compute a seek cost instead of fixed threshold */
1111 int i_th = b_aseekfast ? 1 : 5;
1113 if( i_skip <= i_th * i_avg &&
1114 i_skip < STREAM_CACHE_SIZE )
1119 msg_Dbg( s, "b_seek=%d th*avg=%d skip=%"PRId64,
1120 b_seek, i_th*i_avg, i_skip );
1126 int64_t i_start, i_end;
1127 /* Do the access seek */
1129 if( ASeek( s, i_pos ) ) return VLC_EGENERIC;
1133 block_ChainRelease( p_sys->block.p_first );
1136 p_sys->block.i_start = p_sys->i_pos = i_pos;
1137 p_sys->block.i_offset = 0;
1138 p_sys->block.p_current = NULL;
1139 p_sys->block.i_size = 0;
1140 p_sys->block.p_first = NULL;
1141 p_sys->block.pp_last = &p_sys->block.p_first;
1143 /* Refill a block */
1144 if( AStreamRefillBlock( s ) )
1145 return VLC_EGENERIC;
1148 p_sys->stat.i_seek_time += i_end - i_start;
1149 p_sys->stat.i_seek_count++;
1156 /* Read and skip enough data */
1157 if( AStreamRefillBlock( s ) )
1158 return VLC_EGENERIC;
1160 while( p_sys->block.p_current &&
1161 p_sys->i_pos + p_sys->block.p_current->i_buffer - p_sys->block.i_offset < i_pos )
1163 p_sys->i_pos += p_sys->block.p_current->i_buffer - p_sys->block.i_offset;
1164 p_sys->block.p_current = p_sys->block.p_current->p_next;
1165 p_sys->block.i_offset = 0;
1168 while( p_sys->block.i_start + p_sys->block.i_size < i_pos );
1170 p_sys->block.i_offset = i_pos - p_sys->i_pos;
1171 p_sys->i_pos = i_pos;
1176 return VLC_EGENERIC;
1179 static int AStreamRefillBlock( stream_t *s )
1181 stream_sys_t *p_sys = s->p_sys;
1182 int64_t i_start, i_stop;
1186 while( p_sys->block.i_size >= STREAM_CACHE_SIZE &&
1187 p_sys->block.p_first != p_sys->block.p_current )
1189 block_t *b = p_sys->block.p_first;
1191 p_sys->block.i_start += b->i_buffer;
1192 p_sys->block.i_size -= b->i_buffer;
1193 p_sys->block.p_first = b->p_next;
1197 if( p_sys->block.i_size >= STREAM_CACHE_SIZE &&
1198 p_sys->block.p_current == p_sys->block.p_first &&
1199 p_sys->block.p_current->p_next ) /* At least 2 packets */
1201 /* Enough data, don't read more */
1205 /* Now read a new block */
1212 return VLC_EGENERIC;
1215 if( ( b = AReadBlock( s, &b_eof ) ) )
1218 return VLC_EGENERIC;
1225 /* Append the block */
1226 p_sys->block.i_size += b->i_buffer;
1227 *p_sys->block.pp_last = b;
1228 p_sys->block.pp_last = &b->p_next;
1231 if( p_sys->block.p_current == NULL )
1232 p_sys->block.p_current = b;
1235 p_sys->stat.i_bytes += b->i_buffer;
1236 p_sys->stat.i_read_time += i_stop - i_start;
1237 p_sys->stat.i_read_count++;
1246 /****************************************************************************
1248 ****************************************************************************/
1249 static int AStreamRefillStream( stream_t *s );
1251 static int AStreamReadStream( stream_t *s, void *p_read, unsigned int i_read )
1253 stream_sys_t *p_sys = s->p_sys;
1254 stream_track_t *tk = &p_sys->stream.tk[p_sys->stream.i_tk];
1256 uint8_t *p_data = (uint8_t *)p_read;
1257 uint8_t *p_record = p_data;
1258 unsigned int i_data = 0;
1260 if( tk->i_start >= tk->i_end )
1263 if( p_sys->record.b_active && !p_data )
1264 p_record = p_data = malloc( i_read );
1266 if( p_data == NULL )
1268 /* seek within this stream if possible, else use plain old read and discard */
1269 stream_sys_t *p_sys = s->p_sys;
1270 access_t *p_access = p_sys->p_access;
1272 /* seeking after EOF is not what we want */
1273 if( !( p_access->info.b_eof ) )
1276 access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
1278 return AStreamSeekStream( s, p_sys->i_pos + i_read ) ? 0 : i_read;
1283 msg_Dbg( s, "AStreamReadStream: %d pos=%"PRId64" tk=%d start=%"PRId64
1284 " offset=%d end=%"PRId64,
1285 i_read, p_sys->i_pos, p_sys->stream.i_tk,
1286 tk->i_start, p_sys->stream.i_offset, tk->i_end );
1289 while( i_data < i_read )
1291 int i_off = (tk->i_start + p_sys->stream.i_offset) %
1292 STREAM_CACHE_TRACK_SIZE;
1293 unsigned int i_current =
1294 __MAX(0,__MIN( tk->i_end - tk->i_start - p_sys->stream.i_offset,
1295 STREAM_CACHE_TRACK_SIZE - i_off ));
1296 int i_copy = __MIN( i_current, i_read - i_data );
1298 if( i_copy <= 0 ) break; /* EOF */
1301 /* msg_Dbg( s, "AStreamReadStream: copy %d", i_copy ); */
1304 memcpy( p_data, &tk->p_buffer[i_off], i_copy );
1308 p_sys->stream.i_offset += i_copy;
1310 /* Update pos now */
1311 p_sys->i_pos += i_copy;
1314 p_sys->stream.i_used += i_copy;
1315 if( tk->i_start + p_sys->stream.i_offset >= tk->i_end ||
1316 p_sys->stream.i_used >= p_sys->stream.i_read_size )
1318 if( AStreamRefillStream( s ) )
1321 if( tk->i_start >= tk->i_end ) break;
1326 if( p_sys->record.b_active )
1328 if( i_data > 0 && p_record != NULL)
1329 ARecordWrite( s, p_record, i_data );
1337 static int AStreamPeekStream( stream_t *s, const uint8_t **pp_peek, unsigned int i_read )
1339 stream_sys_t *p_sys = s->p_sys;
1340 stream_track_t *tk = &p_sys->stream.tk[p_sys->stream.i_tk];
1343 if( tk->i_start >= tk->i_end ) return 0; /* EOF */
1346 msg_Dbg( s, "AStreamPeekStream: %d pos=%"PRId64" tk=%d "
1347 "start=%"PRId64" offset=%d end=%"PRId64,
1348 i_read, p_sys->i_pos, p_sys->stream.i_tk,
1349 tk->i_start, p_sys->stream.i_offset, tk->i_end );
1352 /* Avoid problem, but that should *never* happen */
1353 if( i_read > STREAM_CACHE_TRACK_SIZE / 2 )
1354 i_read = STREAM_CACHE_TRACK_SIZE / 2;
1356 while( tk->i_end - tk->i_start - p_sys->stream.i_offset < i_read )
1358 if( p_sys->stream.i_used <= 1 )
1360 /* Be sure we will read something */
1361 p_sys->stream.i_used += i_read -
1362 (tk->i_end - tk->i_start - p_sys->stream.i_offset);
1364 if( AStreamRefillStream( s ) ) break;
1367 if( tk->i_end - tk->i_start - p_sys->stream.i_offset < i_read )
1368 i_read = tk->i_end - tk->i_start - p_sys->stream.i_offset;
1370 /* Now, direct pointer or a copy ? */
1371 i_off = (tk->i_start + p_sys->stream.i_offset) % STREAM_CACHE_TRACK_SIZE;
1372 if( i_off + i_read <= STREAM_CACHE_TRACK_SIZE )
1374 *pp_peek = &tk->p_buffer[i_off];
1378 if( p_sys->i_peek < i_read )
1380 p_sys->p_peek = realloc( p_sys->p_peek, i_read );
1381 if( !p_sys->p_peek )
1386 p_sys->i_peek = i_read;
1389 memcpy( p_sys->p_peek, &tk->p_buffer[i_off],
1390 STREAM_CACHE_TRACK_SIZE - i_off );
1391 memcpy( &p_sys->p_peek[STREAM_CACHE_TRACK_SIZE - i_off],
1392 &tk->p_buffer[0], i_read - (STREAM_CACHE_TRACK_SIZE - i_off) );
1394 *pp_peek = p_sys->p_peek;
1398 static int AStreamSeekStream( stream_t *s, int64_t i_pos )
1400 stream_sys_t *p_sys = s->p_sys;
1401 access_t *p_access = p_sys->p_access;
1409 msg_Dbg( s, "AStreamSeekStream: to %"PRId64" pos=%"PRId64
1410 " tk=%d start=%"PRId64" offset=%d end=%"PRId64,
1411 i_pos, p_sys->i_pos, p_sys->stream.i_tk,
1412 p_sys->stream.tk[p_sys->stream.i_tk].i_start,
1413 p_sys->stream.i_offset,
1414 p_sys->stream.tk[p_sys->stream.i_tk].i_end );
1418 /* Seek in our current track ? */
1419 if( i_pos >= p_sys->stream.tk[p_sys->stream.i_tk].i_start &&
1420 i_pos < p_sys->stream.tk[p_sys->stream.i_tk].i_end )
1422 stream_track_t *tk = &p_sys->stream.tk[p_sys->stream.i_tk];
1424 msg_Dbg( s, "AStreamSeekStream: current track" );
1426 p_sys->i_pos = i_pos;
1427 p_sys->stream.i_offset = i_pos - tk->i_start;
1429 /* If there is not enough data left in the track, refill */
1430 /* \todo How to get a correct value for
1431 * - refilling threshold
1432 * - how much to refill
1434 if( (tk->i_end - tk->i_start ) - p_sys->stream.i_offset <
1435 p_sys->stream.i_read_size )
1437 if( p_sys->stream.i_used < STREAM_READ_ATONCE / 2 )
1439 p_sys->stream.i_used = STREAM_READ_ATONCE / 2 ;
1440 AStreamRefillStream( s );
1446 access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
1449 /* We can't do nothing */
1450 msg_Dbg( s, "AStreamSeekStream: can't seek" );
1451 return VLC_EGENERIC;
1454 /* Date the current track */
1455 p_sys->stream.tk[p_sys->stream.i_tk].i_date = mdate();
1457 /* Try to reuse already read data */
1458 for( i = 0; i < STREAM_CACHE_TRACK; i++ )
1460 stream_track_t *tk = &p_sys->stream.tk[i];
1462 if( i_pos >= tk->i_start && i_pos <= tk->i_end )
1465 msg_Dbg( s, "AStreamSeekStream: reusing %d start=%"PRId64
1466 " end=%"PRId64, i, tk->i_start, tk->i_end );
1469 /* Seek at the end of the buffer */
1470 if( ASeek( s, tk->i_end ) ) return VLC_EGENERIC;
1473 p_sys->i_pos = i_pos;
1474 p_sys->stream.i_tk = i;
1475 p_sys->stream.i_offset = i_pos - tk->i_start;
1477 if( p_sys->stream.i_used < 1024 )
1478 p_sys->stream.i_used = 1024;
1480 if( AStreamRefillStream( s ) && i_pos == tk->i_end )
1481 return VLC_EGENERIC;
1487 access_Control( p_access, ACCESS_CAN_SEEK, &b_afastseek );
1488 /* FIXME compute seek cost (instead of static 'stupid' value) */
1489 i_maxth = __MIN( p_sys->stream.i_read_size, STREAM_READ_ATONCE / 2 );
1495 /* Search closest segment TODO */
1496 for( i = 0; i < STREAM_CACHE_TRACK; i++ )
1498 stream_track_t *tk = &p_sys->stream.tk[i];
1500 if( i_pos + i_maxth >= tk->i_start )
1502 msg_Dbg( s, "good segment before current pos, TODO" );
1504 if( i_pos - i_maxth <= tk->i_end )
1506 msg_Dbg( s, "good segment after current pos, TODO" );
1511 /* Nothing good, seek and choose oldest segment */
1512 if( ASeek( s, i_pos ) ) return VLC_EGENERIC;
1513 p_sys->i_pos = i_pos;
1516 for( i = 1; i < STREAM_CACHE_TRACK; i++ )
1518 if( p_sys->stream.tk[i].i_date < p_sys->stream.tk[i_new].i_date )
1522 /* Reset the segment */
1523 p_sys->stream.i_tk = i_new;
1524 p_sys->stream.i_offset = 0;
1525 p_sys->stream.tk[i_new].i_start = i_pos;
1526 p_sys->stream.tk[i_new].i_end = i_pos;
1529 if( p_sys->stream.i_used < STREAM_READ_ATONCE / 2 )
1530 p_sys->stream.i_used = STREAM_READ_ATONCE / 2;
1532 if( AStreamRefillStream( s ) )
1533 return VLC_EGENERIC;
1538 static int AStreamRefillStream( stream_t *s )
1540 stream_sys_t *p_sys = s->p_sys;
1541 stream_track_t *tk = &p_sys->stream.tk[p_sys->stream.i_tk];
1543 /* We read but won't increase i_start after initial start + offset */
1545 __MIN( p_sys->stream.i_used, STREAM_CACHE_TRACK_SIZE -
1546 (tk->i_end - tk->i_start - p_sys->stream.i_offset) );
1547 bool b_read = false;
1548 int64_t i_start, i_stop;
1550 if( i_toread <= 0 ) return VLC_EGENERIC; /* EOF */
1553 msg_Dbg( s, "AStreamRefillStream: used=%d toread=%d",
1554 p_sys->stream.i_used, i_toread );
1558 while( i_toread > 0 )
1560 int i_off = tk->i_end % STREAM_CACHE_TRACK_SIZE;
1564 return VLC_EGENERIC;
1566 i_read = __MIN( i_toread, STREAM_CACHE_TRACK_SIZE - i_off );
1567 i_read = AReadStream( s, &tk->p_buffer[i_off], i_read );
1569 /* msg_Dbg( s, "AStreamRefillStream: read=%d", i_read ); */
1574 else if( i_read == 0 )
1577 return VLC_EGENERIC;
1583 tk->i_end += i_read;
1585 /* Windows of STREAM_CACHE_TRACK_SIZE */
1586 if( tk->i_end - tk->i_start > STREAM_CACHE_TRACK_SIZE )
1588 int i_invalid = tk->i_end - tk->i_start - STREAM_CACHE_TRACK_SIZE;
1590 tk->i_start += i_invalid;
1591 p_sys->stream.i_offset -= i_invalid;
1595 p_sys->stream.i_used -= i_read;
1597 p_sys->stat.i_bytes += i_read;
1598 p_sys->stat.i_read_count++;
1602 p_sys->stat.i_read_time += i_stop - i_start;
1607 static void AStreamPrebufferStream( stream_t *s )
1609 stream_sys_t *p_sys = s->p_sys;
1610 access_t *p_access = p_sys->p_access;
1612 int64_t i_first = 0;
1614 int64_t i_prebuffer = p_sys->b_quick ? STREAM_CACHE_TRACK_SIZE /100 :
1615 ( (p_access->info.i_title > 1 || p_access->info.i_seekpoint > 1) ?
1616 STREAM_CACHE_PREBUFFER_SIZE : STREAM_CACHE_TRACK_SIZE / 3 );
1618 msg_Dbg( s, "pre-buffering..." );
1622 stream_track_t *tk = &p_sys->stream.tk[p_sys->stream.i_tk];
1624 int64_t i_date = mdate();
1627 if( s->b_die || tk->i_end >= i_prebuffer ||
1628 (i_first > 0 && i_first + STREAM_CACHE_PREBUFFER_LENGTH < i_date) )
1633 p_sys->stat.i_bytes = tk->i_end - tk->i_start;
1634 p_sys->stat.i_read_time = i_date - i_start;
1635 i_byterate = ( INT64_C(1000000) * p_sys->stat.i_bytes ) /
1636 (p_sys->stat.i_read_time+1);
1638 msg_Dbg( s, "pre-buffering done %"PRId64" bytes in %"PRId64"s - "
1639 "%"PRId64" kbytes/s",
1640 p_sys->stat.i_bytes,
1641 p_sys->stat.i_read_time / INT64_C(1000000),
1642 i_byterate / 1024 );
1647 i_read = STREAM_CACHE_TRACK_SIZE - tk->i_end;
1648 i_read = __MIN( p_sys->stream.i_read_size, i_read );
1649 i_read = AReadStream( s, &tk->p_buffer[tk->i_end], i_read );
1652 else if( i_read == 0 )
1658 msg_Dbg( s, "received first data for our buffer");
1661 tk->i_end += i_read;
1663 p_sys->stat.i_read_count++;
1667 /****************************************************************************
1669 ****************************************************************************/
1671 static int AStreamReadImmediate( stream_t *s, void *p_read, unsigned int i_read )
1673 stream_sys_t *p_sys = s->p_sys;
1674 uint8_t *p_data= (uint8_t*)p_read;
1675 uint8_t *p_record = p_data;
1676 unsigned int i_data;
1679 msg_Dbg( s, "AStreamReadImmediate p_read=%p i_read=%d",
1683 if( p_sys->record.b_active && !p_data )
1684 p_record = p_data = malloc( i_read );
1686 /* First, check if we already have some data in the buffer,
1687 * that we could copy directly */
1688 i_data = __MIN( stream_buffered_size( s ), i_read );
1692 msg_Dbg( s, "AStreamReadImmediate: copy %u from %p", i_data, stream_buffer( s ) );
1695 assert( i_data <= STREAM_CACHE_SIZE );
1699 memcpy( p_data, stream_buffer( s ), i_data );
1704 /* Now that we've read our buffer we don't need its i_copy bytes */
1705 stream_buffer_empty( s, i_data );
1707 /* Now check if we have still to really read some data */
1708 while( i_data < i_read )
1710 const unsigned int i_to_read = i_read - i_data;
1715 i_result = AReadStream( s, p_data, i_to_read );
1719 void *p_dummy = malloc( i_to_read );
1724 i_result = AReadStream( s, p_dummy, i_to_read );
1731 p_sys->i_pos += i_data;
1737 if( p_sys->record.b_active )
1739 if( i_data > 0 && p_record != NULL)
1740 ARecordWrite( s, p_record, i_data );
1747 static int AStreamPeekImmediate( stream_t *s, const uint8_t **pp_peek, unsigned int i_read )
1750 msg_Dbg( s, "AStreamPeekImmediate: %d size=%"PRId64,
1751 i_read, size_buffered_size( s ) );
1754 /* Avoid problem, but that shouldn't happen
1755 * FIXME yes it can */
1756 if( i_read > STREAM_CACHE_SIZE / 2 )
1757 i_read = STREAM_CACHE_SIZE / 2;
1759 int i_to_read = i_read - stream_buffered_size( s );
1763 msg_Dbg( s, "AStreamPeekImmediate: Reading %d",
1766 i_to_read = AReadStream( s, stream_buffer( s ) + stream_buffered_size( s ),
1770 stream_buffer_fill( s, i_to_read );
1773 *pp_peek = stream_buffer( s );
1775 return __MIN( stream_buffered_size( s ), i_read );
1778 static int AStreamSeekImmediate( stream_t *s, int64_t i_pos )
1780 stream_sys_t *p_sys = s->p_sys;
1781 access_t *p_access = p_sys->p_access;
1785 msg_Dbg( s, "AStreamSeekImmediate to %"PRId64" pos=%"PRId64
1786 i_pos, p_sys->i_pos );
1789 access_Control( p_access, ACCESS_CAN_SEEK, &b_aseek );
1792 /* We can't do nothing */
1793 msg_Dbg( s, "AStreamSeekImmediate: can't seek" );
1794 return VLC_EGENERIC;
1797 /* Just reset our buffer */
1798 stream_buffer_empty( s, stream_buffered_size( s ) );
1800 if( ASeek( s, i_pos ) )
1801 return VLC_EGENERIC;
1806 /****************************************************************************
1808 ****************************************************************************/
1810 * Read from the stream untill first newline.
1811 * \param s Stream handle to read from
1812 * \return A pointer to the allocated output string. You need to free this when you are done.
1814 #define STREAM_PROBE_LINE 2048
1815 #define STREAM_LINE_MAX (2048*100)
1816 char *stream_ReadLine( stream_t *s )
1818 char *p_line = NULL;
1819 int i_line = 0, i_read = 0;
1821 while( i_read < STREAM_LINE_MAX )
1824 const uint8_t *p_data;
1828 /* Probe new data */
1829 i_data = stream_Peek( s, &p_data, STREAM_PROBE_LINE );
1830 if( i_data <= 0 ) break; /* No more data */
1833 i_pos = stream_Tell( s );
1834 if( i_pos == 0 && i_data >= 3 )
1837 const char *psz_encoding = NULL;
1839 if( !memcmp( p_data, "\xEF\xBB\xBF", 3 ) )
1841 psz_encoding = "UTF-8";
1844 else if( !memcmp( p_data, "\xFF\xFE", 2 ) )
1846 psz_encoding = "UTF-16LE";
1847 s->b_little_endian = true;
1848 s->i_char_width = 2;
1851 else if( !memcmp( p_data, "\xFE\xFF", 2 ) )
1853 psz_encoding = "UTF-16BE";
1854 s->i_char_width = 2;
1858 /* Seek past the BOM */
1861 stream_Seek( s, i_bom_size );
1862 p_data += i_bom_size;
1863 i_data -= i_bom_size;
1866 /* Open the converter if we need it */
1867 if( psz_encoding != NULL )
1869 input_thread_t *p_input;
1870 msg_Dbg( s, "%s BOM detected", psz_encoding );
1871 p_input = (input_thread_t *)vlc_object_find( s, VLC_OBJECT_INPUT, FIND_PARENT );
1872 if( s->i_char_width > 1 )
1874 s->conv = vlc_iconv_open( "UTF-8", psz_encoding );
1875 if( s->conv == (vlc_iconv_t)-1 )
1877 msg_Err( s, "iconv_open failed" );
1880 if( p_input != NULL)
1882 var_Create( p_input, "subsdec-encoding", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
1883 var_SetString( p_input, "subsdec-encoding", "UTF-8" );
1884 vlc_object_release( p_input );
1889 if( i_data % s->i_char_width )
1891 /* keep i_char_width boundary */
1892 i_data = i_data - ( i_data % s->i_char_width );
1893 msg_Warn( s, "the read is not i_char_width compatible");
1899 /* Check if there is an EOL */
1900 if( s->i_char_width == 1 )
1902 /* UTF-8: 0A <LF> */
1903 psz_eol = memchr( p_data, '\n', i_data );
1907 const uint8_t *p = p_data;
1908 const uint8_t *p_last = p + i_data - s->i_char_width;
1910 if( s->i_char_width == 2 )
1912 if( s->b_little_endian == true)
1914 /* UTF-16LE: 0A 00 <LF> */
1915 while( p <= p_last && ( p[0] != 0x0A || p[1] != 0x00 ) )
1920 /* UTF-16BE: 00 0A <LF> */
1921 while( p <= p_last && ( p[1] != 0x0A || p[0] != 0x00 ) )
1932 psz_eol = (char *)p + ( s->i_char_width - 1 );
1938 i_data = (psz_eol - (char *)p_data) + 1;
1939 p_line = realloc( p_line, i_line + i_data + s->i_char_width ); /* add \0 */
1942 i_data = stream_Read( s, &p_line[i_line], i_data );
1943 if( i_data <= 0 ) break; /* Hmmm */
1944 i_line += i_data - s->i_char_width; /* skip \n */;
1947 /* We have our line */
1951 /* Read data (+1 for easy \0 append) */
1952 p_line = realloc( p_line, i_line + STREAM_PROBE_LINE + s->i_char_width );
1955 i_data = stream_Read( s, &p_line[i_line], STREAM_PROBE_LINE );
1956 if( i_data <= 0 ) break; /* Hmmm */
1964 for( j = 0; j < s->i_char_width; j++ )
1966 p_line[i_line + j] = '\0';
1968 i_line += s->i_char_width; /* the added \0 */
1969 if( s->i_char_width > 1 )
1971 size_t i_in = 0, i_out = 0;
1972 const char * p_in = NULL;
1973 char * p_out = NULL;
1974 char * psz_new_line = NULL;
1977 psz_new_line = malloc( i_line );
1978 if( psz_new_line == NULL )
1980 i_in = i_out = (size_t)i_line;
1982 p_out = psz_new_line;
1984 if( vlc_iconv( s->conv, &p_in, &i_in, &p_out, &i_out ) == (size_t)-1 )
1986 msg_Err( s, "iconv failed" );
1987 msg_Dbg( s, "original: %d, in %d, out %d", i_line, (int)i_in, (int)i_out );
1990 p_line = psz_new_line;
1991 i_line = (size_t)i_line - i_out; /* does not include \0 */
1994 /* Remove trailing LF/CR */
1995 while( i_line >= 2 && ( p_line[i_line-2] == '\r' ||
1996 p_line[i_line-2] == '\n') ) i_line--;
1998 /* Make sure the \0 is there */
1999 p_line[i_line-1] = '\0';
2006 /* We failed to read any data, probably EOF */
2008 if( s->conv != (vlc_iconv_t)(-1) ) vlc_iconv_close( s->conv );
2012 /****************************************************************************
2013 * Access reading/seeking wrappers to handle concatenated streams.
2014 ****************************************************************************/
2015 static int AReadStream( stream_t *s, void *p_read, unsigned int i_read )
2017 stream_sys_t *p_sys = s->p_sys;
2018 access_t *p_access = p_sys->p_access;
2019 input_thread_t *p_input = NULL;
2020 int i_read_orig = i_read;
2023 if( s->p_parent && s->p_parent->p_parent &&
2024 s->p_parent->p_parent->i_object_type == VLC_OBJECT_INPUT )
2025 p_input = (input_thread_t *)s->p_parent->p_parent;
2027 if( !p_sys->i_list )
2029 i_read = p_access->pf_read( p_access, p_read, i_read );
2030 if( p_access->b_die )
2031 vlc_object_kill( s );
2034 vlc_mutex_lock( &p_input->p->counters.counters_lock );
2035 stats_UpdateInteger( s, p_input->p->counters.p_read_bytes, i_read,
2037 stats_UpdateFloat( s, p_input->p->counters.p_input_bitrate,
2038 (float)i_total, NULL );
2039 stats_UpdateInteger( s, p_input->p->counters.p_read_packets, 1, NULL );
2040 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
2045 i_read = p_sys->p_list_access->pf_read( p_sys->p_list_access, p_read,
2047 if( p_access->b_die )
2048 vlc_object_kill( s );
2050 /* If we reached an EOF then switch to the next stream in the list */
2051 if( i_read == 0 && p_sys->i_list_index + 1 < p_sys->i_list )
2053 char *psz_name = p_sys->list[++p_sys->i_list_index]->psz_path;
2054 access_t *p_list_access;
2056 msg_Dbg( s, "opening input `%s'", psz_name );
2058 p_list_access = access_New( s, p_access->psz_access, "", psz_name );
2060 if( !p_list_access ) return 0;
2062 if( p_sys->p_list_access != p_access )
2063 access_Delete( p_sys->p_list_access );
2065 p_sys->p_list_access = p_list_access;
2067 /* We have to read some data */
2068 return AReadStream( s, p_read, i_read_orig );
2071 /* Update read bytes in input */
2074 vlc_mutex_lock( &p_input->p->counters.counters_lock );
2075 stats_UpdateInteger( s, p_input->p->counters.p_read_bytes, i_read, &i_total );
2076 stats_UpdateFloat( s, p_input->p->counters.p_input_bitrate,
2077 (float)i_total, NULL );
2078 stats_UpdateInteger( s, p_input->p->counters.p_read_packets, 1, NULL );
2079 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
2084 static block_t *AReadBlock( stream_t *s, bool *pb_eof )
2086 stream_sys_t *p_sys = s->p_sys;
2087 access_t *p_access = p_sys->p_access;
2088 input_thread_t *p_input = NULL;
2093 if( s->p_parent && s->p_parent->p_parent &&
2094 s->p_parent->p_parent->i_object_type == VLC_OBJECT_INPUT )
2095 p_input = (input_thread_t *)s->p_parent->p_parent;
2097 if( !p_sys->i_list )
2099 p_block = p_access->pf_block( p_access );
2100 if( p_access->b_die )
2101 vlc_object_kill( s );
2102 if( pb_eof ) *pb_eof = p_access->info.b_eof;
2103 if( p_input && p_block && libvlc_stats (p_access) )
2105 vlc_mutex_lock( &p_input->p->counters.counters_lock );
2106 stats_UpdateInteger( s, p_input->p->counters.p_read_bytes,
2107 p_block->i_buffer, &i_total );
2108 stats_UpdateFloat( s, p_input->p->counters.p_input_bitrate,
2109 (float)i_total, NULL );
2110 stats_UpdateInteger( s, p_input->p->counters.p_read_packets, 1, NULL );
2111 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
2116 p_block = p_sys->p_list_access->pf_block( p_sys->p_list_access );
2117 if( p_access->b_die )
2118 vlc_object_kill( s );
2119 b_eof = p_sys->p_list_access->info.b_eof;
2120 if( pb_eof ) *pb_eof = b_eof;
2122 /* If we reached an EOF then switch to the next stream in the list */
2123 if( !p_block && b_eof && p_sys->i_list_index + 1 < p_sys->i_list )
2125 char *psz_name = p_sys->list[++p_sys->i_list_index]->psz_path;
2126 access_t *p_list_access;
2128 msg_Dbg( s, "opening input `%s'", psz_name );
2130 p_list_access = access_New( s, p_access->psz_access, "", psz_name );
2132 if( !p_list_access ) return 0;
2134 if( p_sys->p_list_access != p_access )
2135 access_Delete( p_sys->p_list_access );
2137 p_sys->p_list_access = p_list_access;
2139 /* We have to read some data */
2140 return AReadBlock( s, pb_eof );
2146 vlc_mutex_lock( &p_input->p->counters.counters_lock );
2147 stats_UpdateInteger( s, p_input->p->counters.p_read_bytes,
2148 p_block->i_buffer, &i_total );
2149 stats_UpdateFloat( s, p_input->p->counters.p_input_bitrate,
2150 (float)i_total, NULL );
2151 stats_UpdateInteger( s, p_input->p->counters.p_read_packets,
2153 vlc_mutex_unlock( &p_input->p->counters.counters_lock );
2159 static int ASeek( stream_t *s, int64_t i_pos )
2161 stream_sys_t *p_sys = s->p_sys;
2162 access_t *p_access = p_sys->p_access;
2164 /* Check which stream we need to access */
2170 access_t *p_list_access = 0;
2172 for( i = 0; i < p_sys->i_list - 1; i++ )
2174 if( i_pos < p_sys->list[i]->i_size + i_size ) break;
2175 i_size += p_sys->list[i]->i_size;
2177 psz_name = p_sys->list[i]->psz_path;
2179 if( i != p_sys->i_list_index )
2180 msg_Dbg( s, "opening input `%s'", psz_name );
2182 if( i != p_sys->i_list_index && i != 0 )
2185 access_New( s, p_access->psz_access, "", psz_name );
2187 else if( i != p_sys->i_list_index )
2189 p_list_access = p_access;
2194 if( p_sys->p_list_access != p_access )
2195 access_Delete( p_sys->p_list_access );
2197 p_sys->p_list_access = p_list_access;
2200 p_sys->i_list_index = i;
2201 return p_sys->p_list_access->pf_seek( p_sys->p_list_access,
2205 return p_access->pf_seek( p_access, i_pos );
2210 * Try to read "i_read" bytes into a buffer pointed by "p_read". If
2211 * "p_read" is NULL then data are skipped instead of read. The return
2212 * value is the real numbers of bytes read/skip. If this value is less
2213 * than i_read that means that it's the end of the stream.
2215 int stream_Read( stream_t *s, void *p_read, int i_read )
2217 return s->pf_read( s, p_read, i_read );
2221 * Store in pp_peek a pointer to the next "i_peek" bytes in the stream
2222 * \return The real numbers of valid bytes, if it's less
2223 * or equal to 0, *pp_peek is invalid.
2224 * \note pp_peek is a pointer to internal buffer and it will be invalid as
2225 * soons as other stream_* functions are called.
2226 * \note Due to input limitation, it could be less than i_peek without meaning
2227 * the end of the stream (but only when you have i_peek >=
2228 * p_input->i_bufsize)
2230 int stream_Peek( stream_t *s, const uint8_t **pp_peek, int i_peek )
2232 return s->pf_peek( s, pp_peek, i_peek );
2236 * Use to control the "stream_t *". Look at #stream_query_e for
2237 * possible "i_query" value and format arguments. Return VLC_SUCCESS
2238 * if ... succeed ;) and VLC_EGENERIC if failed or unimplemented
2240 int stream_vaControl( stream_t *s, int i_query, va_list args )
2242 return s->pf_control( s, i_query, args );
2248 void stream_Delete( stream_t *s )
2253 int stream_Control( stream_t *s, int i_query, ... )
2259 return VLC_EGENERIC;
2261 va_start( args, i_query );
2262 i_result = s->pf_control( s, i_query, args );
2268 * Read "i_size" bytes and store them in a block_t.
2269 * It always read i_size bytes unless you are at the end of the stream
2270 * where it return what is available.
2272 block_t *stream_Block( stream_t *s, int i_size )
2274 if( i_size <= 0 ) return NULL;
2276 /* emulate block read */
2277 block_t *p_bk = block_New( s, i_size );
2280 int i_read = stream_Read( s, p_bk->p_buffer, i_size );
2283 p_bk->i_buffer = i_read;
2286 block_Release( p_bk );