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The msleep in stream.c is useless as access MUST wait themselves.
[vlc] / src / input / input_internal.h
1 /*****************************************************************************
2  * input_internal.h: Internal input structures
3  *****************************************************************************
4  * Copyright (C) 1998-2006 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8  *
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.
13  *
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.
18  *
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  *****************************************************************************/
23
24 #if defined(__PLUGIN__) || defined(__BUILTIN__) || !defined(__LIBVLC__)
25 # error This header file can only be included from LibVLC.
26 #endif
27
28 #ifndef _INPUT_INTERNAL_H
29 #define _INPUT_INTERNAL_H 1
30
31 #include <vlc_access.h>
32 #include <vlc_demux.h>
33 #include <vlc_input.h>
34
35 /*****************************************************************************
36  *  Private input fields
37  *****************************************************************************/
38 /* input_source_t: gathers all information per input source */
39 typedef struct
40 {
41     /* Input item description */
42     input_item_t *p_item;
43
44     /* Access/Stream/Demux plugins */
45     access_t *p_access;
46     stream_t *p_stream;
47     demux_t  *p_demux;
48
49     /* Title infos for that input */
50     bool         b_title_demux; /* Titles/Seekpoints provided by demux */
51     int          i_title;
52     input_title_t **title;
53
54     int i_title_offset;
55     int i_seekpoint_offset;
56
57     int i_title_start;
58     int i_title_end;
59     int i_seekpoint_start;
60     int i_seekpoint_end;
61
62     /* Properties */
63     bool b_can_pause;
64     bool b_can_pace_control;
65     bool b_can_rate_control;
66     bool b_can_stream_record;
67     bool b_rescale_ts;
68
69     bool       b_eof;   /* eof of demuxer */
70     double     f_fps;
71
72     /* Clock average variation */
73     int     i_cr_average;
74
75 } input_source_t;
76
77 /** Private input fields */
78 struct input_thread_private_t
79 {
80     /* Object's event manager */
81     vlc_event_manager_t event_manager;
82
83     /* Global properties */
84     bool        b_can_pause;
85     bool        b_can_rate_control;
86
87     int         i_rate;
88     bool        b_recording;
89     /* */
90     int64_t     i_start;    /* :start-time,0 by default */
91     int64_t     i_stop;     /* :stop-time, 0 if none */
92     int64_t     i_run;      /* :run-time, 0 if none */
93
94     /* Title infos FIXME multi-input (not easy) ? */
95     int          i_title;
96     input_title_t **title;
97
98     int i_title_offset;
99     int i_seekpoint_offset;
100
101     /* User bookmarks FIXME won't be easy with multiples input */
102     int         i_bookmark;
103     seekpoint_t **bookmark;
104
105     /* Input attachment */
106     int i_attachment;
107     input_attachment_t **attachment;
108
109     /* Output */
110     es_out_t        *p_es_out;
111     sout_instance_t *p_sout;            /* XXX Move it to es_out ? */
112     bool            b_out_pace_control; /*     idem ? */
113
114     /* Main input properties */
115     input_source_t input;
116     /* Slave demuxers (subs, and others) */
117     int            i_slave;
118     input_source_t **slave;
119
120     /* pts delay fixup */
121     struct
122     {
123         int  i_num_faulty;
124         bool b_to_high;
125         bool b_auto_adjust;
126     } pts_adjust;
127
128     /* Stats counters */
129     struct {
130         counter_t *p_read_packets;
131         counter_t *p_read_bytes;
132         counter_t *p_input_bitrate;
133         counter_t *p_demux_read;
134         counter_t *p_demux_bitrate;
135         counter_t *p_decoded_audio;
136         counter_t *p_decoded_video;
137         counter_t *p_decoded_sub;
138         counter_t *p_sout_sent_packets;
139         counter_t *p_sout_sent_bytes;
140         counter_t *p_sout_send_bitrate;
141         counter_t *p_played_abuffers;
142         counter_t *p_lost_abuffers;
143         counter_t *p_displayed_pictures;
144         counter_t *p_lost_pictures;
145         vlc_mutex_t counters_lock;
146     } counters;
147
148     /* Buffer of pending actions */
149     vlc_mutex_t lock_control;
150     vlc_cond_t  wait_control;
151     int i_control;
152     struct
153     {
154         /* XXX for string value you have to allocate it before calling
155          * input_ControlPush */
156         int         i_type;
157         vlc_value_t val;
158     } control[INPUT_CONTROL_FIFO_SIZE];
159 };
160
161 /***************************************************************************
162  * Internal control helpers
163  ***************************************************************************/
164 enum input_control_e
165 {
166     INPUT_CONTROL_SET_DIE,
167
168     INPUT_CONTROL_SET_STATE,
169
170     INPUT_CONTROL_SET_RATE,
171     INPUT_CONTROL_SET_RATE_SLOWER,
172     INPUT_CONTROL_SET_RATE_FASTER,
173
174     INPUT_CONTROL_SET_POSITION,
175     INPUT_CONTROL_SET_POSITION_OFFSET,
176
177     INPUT_CONTROL_SET_TIME,
178     INPUT_CONTROL_SET_TIME_OFFSET,
179
180     INPUT_CONTROL_SET_PROGRAM,
181
182     INPUT_CONTROL_SET_TITLE,
183     INPUT_CONTROL_SET_TITLE_NEXT,
184     INPUT_CONTROL_SET_TITLE_PREV,
185
186     INPUT_CONTROL_SET_SEEKPOINT,
187     INPUT_CONTROL_SET_SEEKPOINT_NEXT,
188     INPUT_CONTROL_SET_SEEKPOINT_PREV,
189
190     INPUT_CONTROL_SET_BOOKMARK,
191
192     INPUT_CONTROL_SET_ES,
193     INPUT_CONTROL_RESTART_ES,
194
195     INPUT_CONTROL_SET_AUDIO_DELAY,
196     INPUT_CONTROL_SET_SPU_DELAY,
197
198     INPUT_CONTROL_ADD_SLAVE,
199
200     INPUT_CONTROL_SET_RECORD_STATE,
201 };
202
203 /* Internal helpers */
204 static inline void input_ControlPush( input_thread_t *p_input,
205                                       int i_type, vlc_value_t *p_val )
206 {
207     vlc_mutex_lock( &p_input->p->lock_control );
208     if( i_type == INPUT_CONTROL_SET_DIE )
209     {
210         /* Special case, empty the control */
211         p_input->p->i_control = 1;
212         p_input->p->control[0].i_type = i_type;
213         memset( &p_input->p->control[0].val, 0, sizeof( vlc_value_t ) );
214     }
215     else if( p_input->p->i_control >= INPUT_CONTROL_FIFO_SIZE )
216     {
217         msg_Err( p_input, "input control fifo overflow, trashing type=%d",
218                  i_type );
219     }
220     else
221     {
222         p_input->p->control[p_input->p->i_control].i_type = i_type;
223         if( p_val )
224             p_input->p->control[p_input->p->i_control].val = *p_val;
225         else
226             memset( &p_input->p->control[p_input->p->i_control].val, 0,
227                     sizeof( vlc_value_t ) );
228
229         p_input->p->i_control++;
230     }
231     vlc_cond_signal( &p_input->p->wait_control );
232     vlc_mutex_unlock( &p_input->p->lock_control );
233 }
234
235 /** Stuff moved out of vlc_input.h -- FIXME: should probably not be inline
236  * anyway. */
237
238 static inline void input_item_SetPreparsed( input_item_t *p_i, bool preparsed )
239 {
240     bool send_event = false;
241
242     if( !p_i->p_meta )
243         p_i->p_meta = vlc_meta_New();
244
245     vlc_mutex_lock( &p_i->lock );
246     int new_status;
247     if( preparsed )
248         new_status = p_i->p_meta->i_status | ITEM_PREPARSED;
249     else
250         new_status = p_i->p_meta->i_status & ~ITEM_PREPARSED;
251     if( p_i->p_meta->i_status != new_status )
252     {
253         p_i->p_meta->i_status = new_status;
254         send_event = true;
255     }
256
257     vlc_mutex_unlock( &p_i->lock );
258
259     if( send_event )
260     {
261         vlc_event_t event;
262         event.type = vlc_InputItemPreparsedChanged;
263         event.u.input_item_preparsed_changed.new_status = new_status;
264         vlc_event_send( &p_i->event_manager, &event );
265     }
266 }
267
268 static inline void input_item_SetArtNotFound( input_item_t *p_i, bool notfound )
269 {
270     if( !p_i->p_meta )
271         p_i->p_meta = vlc_meta_New();
272
273     if( notfound )
274         p_i->p_meta->i_status |= ITEM_ART_NOTFOUND;
275     else
276         p_i->p_meta->i_status &= ~ITEM_ART_NOTFOUND;
277 }
278
279 static inline void input_item_SetArtFetched( input_item_t *p_i, bool artfetched )
280 {
281     if( !p_i->p_meta )
282         p_i->p_meta = vlc_meta_New();
283
284     if( artfetched )
285         p_i->p_meta->i_status |= ITEM_ART_FETCHED;
286     else
287         p_i->p_meta->i_status &= ~ITEM_ART_FETCHED;
288 }
289
290 void input_item_SetHasErrorWhenReading( input_item_t *p_i, bool error );
291
292 /**********************************************************************
293  * Item metadata
294  **********************************************************************/
295 typedef struct playlist_album_t
296 {
297     char *psz_artist;
298     char *psz_album;
299     char *psz_arturl;
300     bool b_found;
301 } playlist_album_t;
302
303 int         input_ArtFind       ( playlist_t *, input_item_t * );
304 int         input_DownloadAndCacheArt ( playlist_t *, input_item_t * );
305
306 /* Becarefull; p_item lock HAS to be taken */
307 void input_ExtractAttachmentAndCacheArt( input_thread_t *p_input );
308
309 /***************************************************************************
310  * Internal prototypes
311  ***************************************************************************/
312
313 /* misc/stats.c */
314 input_stats_t *stats_NewInputStats( input_thread_t *p_input );
315
316 /* input.c */
317 #define input_CreateThreadExtended(a,b,c,d) __input_CreateThreadExtended(VLC_OBJECT(a),b,c,d)
318 input_thread_t *__input_CreateThreadExtended ( vlc_object_t *, input_item_t *, const char *, sout_instance_t * );
319
320 sout_instance_t * input_DetachSout( input_thread_t *p_input );
321
322 /* var.c */
323 void input_ControlVarInit ( input_thread_t * );
324 void input_ControlVarStop( input_thread_t * );
325 void input_ControlVarNavigation( input_thread_t * );
326 void input_ControlVarTitle( input_thread_t *, int i_title );
327
328 void input_ConfigVarInit ( input_thread_t * );
329
330 /* stream.c */
331 stream_t *stream_AccessNew( access_t *p_access, bool );
332 void stream_AccessDelete( stream_t *s );
333 void stream_AccessReset( stream_t *s );
334 void stream_AccessUpdate( stream_t *s );
335
336 /* decoder.c */
337 void       input_DecoderDiscontinuity( decoder_t * p_dec, bool b_flush );
338 bool input_DecoderEmpty( decoder_t * p_dec );
339 int        input_DecoderSetCcState( decoder_t *, bool b_decode, int i_channel );
340 int        input_DecoderGetCcState( decoder_t *, bool *pb_decode, int i_channel );
341 void       input_DecoderIsCcPresent( decoder_t *, bool pb_present[4] );
342
343 /* es_out.c */
344 es_out_t  *input_EsOutNew( input_thread_t *, int i_rate );
345 void       input_EsOutDelete( es_out_t * );
346 es_out_id_t *input_EsOutGetFromID( es_out_t *, int i_id );
347 void       input_EsOutSetDelay( es_out_t *, int i_cat, int64_t );
348 int        input_EsOutSetRecord(  es_out_t *, bool b_record );
349 void       input_EsOutChangeRate( es_out_t *, int );
350 void       input_EsOutChangeState( es_out_t * );
351 void       input_EsOutChangePosition( es_out_t * );
352 bool input_EsOutDecodersEmpty( es_out_t * );
353
354 /* clock.c */
355 enum /* Synchro states */
356 {
357     SYNCHRO_OK     = 0,
358     SYNCHRO_START  = 1,
359     SYNCHRO_REINIT = 2,
360 };
361
362 typedef struct
363 {
364     /* Synchronization information */
365     mtime_t                 delta_cr;
366     mtime_t                 cr_ref, sysdate_ref;
367     mtime_t                 last_sysdate;
368     mtime_t                 last_cr; /* reference to detect unexpected stream
369                                       * discontinuities                      */
370     mtime_t                 last_pts;
371     mtime_t                 last_update;
372     int                     i_synchro_state;
373
374     bool                    b_master;
375
376     int                     i_rate;
377
378     /* Config */
379     int                     i_cr_average;
380     int                     i_delta_cr_residue;
381 } input_clock_t;
382
383 void    input_ClockInit( input_clock_t *, bool b_master, int i_cr_average, int i_rate );
384 void    input_ClockSetPCR( input_thread_t *, input_clock_t *, mtime_t );
385 void    input_ClockResetPCR( input_clock_t * );
386 mtime_t input_ClockGetTS( input_thread_t *, input_clock_t *, mtime_t );
387 void    input_ClockSetRate( input_clock_t *cl, int i_rate );
388
389 /* Subtitles */
390 char **subtitles_Detect( input_thread_t *, char* path, const char *fname );
391 int subtitles_Filter( const char *);
392
393 static inline void input_ChangeStateWithVarCallback( input_thread_t *p_input, int i_state, bool callback )
394 {
395     const bool changed = p_input->i_state != i_state;
396
397     p_input->i_state = i_state;
398     if( i_state == ERROR_S )
399         p_input->b_error = true;
400     else if( i_state == END_S )
401         p_input->b_eof = true;
402
403     input_item_SetHasErrorWhenReading( p_input->p->input.p_item, (i_state == ERROR_S) );
404
405     if( callback )
406     {
407         var_SetInteger( p_input, "state", i_state );
408     }
409     else
410     {
411         vlc_value_t val;
412         val.i_int = i_state;
413         var_Change( p_input, "state", VLC_VAR_SETVALUE, &val, NULL );
414     }
415     if( changed )
416     {
417         vlc_event_t event;
418         event.type = vlc_InputStateChanged;
419         event.u.input_state_changed.new_state = i_state;
420         vlc_event_send( &p_input->p->event_manager, &event );
421     }
422 }
423
424 static inline void input_ChangeState( input_thread_t *p_input, int state )
425 {
426     input_ChangeStateWithVarCallback( p_input, state, true );
427 }
428
429 /* Helpers FIXME to export without input_ prefix */
430 char *input_CreateFilename( vlc_object_t *p_obj, const char *psz_path, const char *psz_prefix, const char *psz_extension );
431
432 #define INPUT_RECORD_PREFIX "vlc-record-%Y-%m-%d-%H:%M:%S-$ N-$ p"
433
434 /* Access */
435
436 #define access_New( a, b, c, d ) __access_New(VLC_OBJECT(a), b, c, d )
437 access_t * __access_New( vlc_object_t *p_obj, const char *psz_access,
438                           const char *psz_demux, const char *psz_path );
439 access_t * access_FilterNew( access_t *p_source,
440                               const char *psz_access_filter );
441 void access_Delete( access_t * );
442
443 /* Demuxer */
444 #include <vlc_demux.h>
445
446 /* stream_t *s could be null and then it mean a access+demux in one */
447 #define demux_New( a, b, c, d, e, f,g ) __demux_New(VLC_OBJECT(a),b,c,d,e,f,g)
448 demux_t *__demux_New(vlc_object_t *p_obj, const char *psz_access, const char *psz_demux, const char *psz_path, stream_t *s, es_out_t *out, bool );
449
450 void demux_Delete(demux_t *);
451
452 static inline int demux_Demux( demux_t *p_demux )
453 {
454     return p_demux->pf_demux( p_demux );
455 }
456 static inline int demux_vaControl( demux_t *p_demux, int i_query, va_list args )
457 {
458     return p_demux->pf_control( p_demux, i_query, args );
459 }
460 static inline int demux_Control( demux_t *p_demux, int i_query, ... )
461 {
462     va_list args;
463     int     i_result;
464
465     va_start( args, i_query );
466     i_result = demux_vaControl( p_demux, i_query, args );
467     va_end( args );
468     return i_result;
469 }
470
471 /* Stream */
472 /**
473  * stream_t definition
474  */
475 struct stream_t
476 {
477     VLC_COMMON_MEMBERS
478
479     /*block_t *(*pf_block)  ( stream_t *, int i_size );*/
480     int      (*pf_read)   ( stream_t *, void *p_read, unsigned int i_read );
481     int      (*pf_peek)   ( stream_t *, const uint8_t **pp_peek, unsigned int i_peek );
482     int      (*pf_control)( stream_t *, int i_query, va_list );
483     void     (*pf_destroy)( stream_t *);
484
485     stream_sys_t *p_sys;
486
487     /* UTF-16 and UTF-32 file reading */
488     vlc_iconv_t     conv;
489     int             i_char_width;
490     bool            b_little_endian;
491 };
492
493 #include <libvlc.h>
494
495 static inline stream_t *vlc_stream_create( vlc_object_t *obj )
496 {
497     return (stream_t *)vlc_custom_create( obj, sizeof(stream_t),
498                                           VLC_OBJECT_GENERIC, "stream" );
499 }
500
501 #endif