git.sesse.net Git - vlc/blob - 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     vlc_bool_t   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     vlc_bool_t b_can_pause;
  64     vlc_bool_t b_can_pace_control;
  65     vlc_bool_t b_can_rate_control;
  66     vlc_bool_t b_rescale_ts;
  67
  68     vlc_bool_t b_eof;   /* eof of demuxer */
  69     double     f_fps;
  70
  71     /* Clock average variation */
  72     int     i_cr_average;
  73
  74 } input_source_t;
  75
  76 /** Private input fields */
  77 struct input_thread_private_t
  78 {
  79     /* Global properties */
  80     vlc_bool_t  b_can_pause;
  81     vlc_bool_t  b_can_rate_control;
  82
  83     int         i_rate;
  84     /* */
  85     int64_t     i_start;    /* :start-time,0 by default */
  86     int64_t     i_stop;     /* :stop-time, 0 if none */
  87     int64_t     i_run;      /* :run-time, 0 if none */
  88
  89     /* Title infos FIXME multi-input (not easy) ? */
  90     int          i_title;
  91     input_title_t **title;
  92
  93     int i_title_offset;
  94     int i_seekpoint_offset;
  95
  96     /* User bookmarks FIXME won't be easy with multiples input */
  97     int         i_bookmark;
  98     seekpoint_t **bookmark;
  99
 100     /* Input attachment */
 101     int i_attachment;
 102     input_attachment_t **attachment;
 103
 104     /* Output */
 105     es_out_t    *p_es_out;
 106     sout_instance_t *p_sout;            /* XXX Move it to es_out ? */
 107     vlc_bool_t      b_sout_keep;
 108     vlc_bool_t      b_out_pace_control; /*     idem ? */
 109
 110     /* Main input properties */
 111     input_source_t input;
 112     /* Slave demuxers (subs, and others) */
 113     int            i_slave;
 114     input_source_t **slave;
 115
 116     /* Stats counters */
 117     struct {
 118         counter_t *p_read_packets;
 119         counter_t *p_read_bytes;
 120         counter_t *p_input_bitrate;
 121         counter_t *p_demux_read;
 122         counter_t *p_demux_bitrate;
 123         counter_t *p_decoded_audio;
 124         counter_t *p_decoded_video;
 125         counter_t *p_decoded_sub;
 126         counter_t *p_sout_sent_packets;
 127         counter_t *p_sout_sent_bytes;
 128         counter_t *p_sout_send_bitrate;
 129         counter_t *p_played_abuffers;
 130         counter_t *p_lost_abuffers;
 131         counter_t *p_displayed_pictures;
 132         counter_t *p_lost_pictures;
 133         vlc_mutex_t counters_lock;
 134     } counters;
 135
 136     /* Buffer of pending actions */
 137     vlc_mutex_t lock_control;
 138     int i_control;
 139     struct
 140     {
 141         /* XXX for string value you have to allocate it before calling
 142          * input_ControlPush */
 143         int         i_type;
 144         vlc_value_t val;
 145     } control[INPUT_CONTROL_FIFO_SIZE];
 146 };
 147
 148 /***************************************************************************
 149  * Internal control helpers
 150  ***************************************************************************/
 151 enum input_control_e
 152 {
 153     INPUT_CONTROL_SET_DIE,
 154
 155     INPUT_CONTROL_SET_STATE,
 156
 157     INPUT_CONTROL_SET_RATE,
 158     INPUT_CONTROL_SET_RATE_SLOWER,
 159     INPUT_CONTROL_SET_RATE_FASTER,
 160
 161     INPUT_CONTROL_SET_POSITION,
 162     INPUT_CONTROL_SET_POSITION_OFFSET,
 163
 164     INPUT_CONTROL_SET_TIME,
 165     INPUT_CONTROL_SET_TIME_OFFSET,
 166
 167     INPUT_CONTROL_SET_PROGRAM,
 168
 169     INPUT_CONTROL_SET_TITLE,
 170     INPUT_CONTROL_SET_TITLE_NEXT,
 171     INPUT_CONTROL_SET_TITLE_PREV,
 172
 173     INPUT_CONTROL_SET_SEEKPOINT,
 174     INPUT_CONTROL_SET_SEEKPOINT_NEXT,
 175     INPUT_CONTROL_SET_SEEKPOINT_PREV,
 176
 177     INPUT_CONTROL_SET_BOOKMARK,
 178
 179     INPUT_CONTROL_SET_ES,
 180
 181     INPUT_CONTROL_SET_AUDIO_DELAY,
 182     INPUT_CONTROL_SET_SPU_DELAY,
 183
 184     INPUT_CONTROL_ADD_SLAVE,
 185 };
 186
 187 /* Internal helpers */
 188 static inline void input_ControlPush( input_thread_t *p_input,
 189                                       int i_type, vlc_value_t *p_val )
 190 {
 191     vlc_mutex_lock( &p_input->p->lock_control );
 192     if( i_type == INPUT_CONTROL_SET_DIE )
 193     {
 194         /* Special case, empty the control */
 195         p_input->p->i_control = 1;
 196         p_input->p->control[0].i_type = i_type;
 197         memset( &p_input->p->control[0].val, 0, sizeof( vlc_value_t ) );
 198     }
 199     else
 200     {
 201         if( p_input->p->i_control >= INPUT_CONTROL_FIFO_SIZE )
 202         {
 203             msg_Err( p_input, "input control fifo overflow, trashing type=%d",
 204                      i_type );
 205             vlc_mutex_unlock( &p_input->p->lock_control );
 206             return;
 207         }
 208         p_input->p->control[p_input->p->i_control].i_type = i_type;
 209         if( p_val )
 210             p_input->p->control[p_input->p->i_control].val = *p_val;
 211         else
 212             memset( &p_input->p->control[p_input->p->i_control].val, 0,
 213                     sizeof( vlc_value_t ) );
 214
 215         p_input->p->i_control++;
 216     }
 217     vlc_mutex_unlock( &p_input->p->lock_control );
 218 }
 219
 220 /**********************************************************************
 221  * Item metadata
 222  **********************************************************************/
 223 typedef struct playlist_album_t
 224 {
 225     char *psz_artist;
 226     char *psz_album;
 227     char *psz_arturl;
 228     vlc_bool_t b_found;
 229 } playlist_album_t;
 230
 231 int         input_MetaFetch     ( playlist_t *, input_item_t * );
 232 int         input_ArtFind       ( playlist_t *, input_item_t * );
 233 vlc_bool_t  input_MetaSatisfied ( playlist_t*, input_item_t*,
 234                                   uint32_t*, uint32_t* );
 235 int         input_DownloadAndCacheArt ( playlist_t *, input_item_t * );
 236
 237 /* Becarefull; p_item lock HAS to be taken */
 238 void input_ExtractAttachmentAndCacheArt( input_thread_t *p_input );
 239
 240 /***************************************************************************
 241  * Internal prototypes
 242  ***************************************************************************/
 243
 244 /* misc/stats.c */
 245 input_stats_t *stats_NewInputStats( input_thread_t *p_input );
 246
 247 /* input.c */
 248 #define input_CreateThreadExtended(a,b,c,d) __input_CreateThreadExtended(VLC_OBJECT(a),b,c,d)
 249 input_thread_t *__input_CreateThreadExtended ( vlc_object_t *, input_item_t *, const char *, sout_instance_t * );
 250
 251 void input_DestroyThreadExtended( input_thread_t *p_input, sout_instance_t ** );
 252
 253 /* var.c */
 254 void input_ControlVarInit ( input_thread_t * );
 255 void input_ControlVarClean( input_thread_t * );
 256 void input_ControlVarNavigation( input_thread_t * );
 257 void input_ControlVarTitle( input_thread_t *, int i_title );
 258
 259 void input_ConfigVarInit ( input_thread_t * );
 260
 261 /* stream.c */
 262 stream_t *stream_AccessNew( access_t *p_access, vlc_bool_t );
 263 void stream_AccessDelete( stream_t *s );
 264 void stream_AccessReset( stream_t *s );
 265 void stream_AccessUpdate( stream_t *s );
 266
 267 /* decoder.c */
 268 void       input_DecoderDiscontinuity( decoder_t * p_dec, vlc_bool_t b_flush );
 269 vlc_bool_t input_DecoderEmpty( decoder_t * p_dec );
 270 int        input_DecoderSetCcState( decoder_t *, vlc_bool_t b_decode, int i_channel );
 271 int        input_DecoderGetCcState( decoder_t *, vlc_bool_t *pb_decode, int i_channel );
 272 void       input_DecoderIsCcPresent( decoder_t *, vlc_bool_t pb_present[4] );
 273
 274 /* es_out.c */
 275 es_out_t  *input_EsOutNew( input_thread_t *, int i_rate );
 276 void       input_EsOutDelete( es_out_t * );
 277 es_out_id_t *input_EsOutGetFromID( es_out_t *, int i_id );
 278 void       input_EsOutSetDelay( es_out_t *, int i_cat, int64_t );
 279 void       input_EsOutChangeRate( es_out_t *, int );
 280 void       input_EsOutChangeState( es_out_t * );
 281 void       input_EsOutChangePosition( es_out_t * );
 282 vlc_bool_t input_EsOutDecodersEmpty( es_out_t * );
 283
 284 /* clock.c */
 285 enum /* Synchro states */
 286 {
 287     SYNCHRO_OK     = 0,
 288     SYNCHRO_START  = 1,
 289     SYNCHRO_REINIT = 2,
 290 };
 291
 292 typedef struct
 293 {
 294     /* Synchronization information */
 295     mtime_t                 delta_cr;
 296     mtime_t                 cr_ref, sysdate_ref;
 297     mtime_t                 last_sysdate;
 298     mtime_t                 last_cr; /* reference to detect unexpected stream
 299                                       * discontinuities                      */
 300     mtime_t                 last_pts;
 301     mtime_t                 last_update;
 302     int                     i_synchro_state;
 303
 304     vlc_bool_t              b_master;
 305
 306     int                     i_rate;
 307
 308     /* Config */
 309     int                     i_cr_average;
 310     int                     i_delta_cr_residue;
 311 } input_clock_t;
 312
 313 void    input_ClockInit( input_thread_t *, input_clock_t *, vlc_bool_t b_master, int i_cr_average, int i_rate );
 314 void    input_ClockSetPCR( input_thread_t *, input_clock_t *, mtime_t );
 315 void    input_ClockResetPCR( input_thread_t *, input_clock_t * );
 316 mtime_t input_ClockGetTS( input_thread_t *, input_clock_t *, mtime_t );
 317 void    input_ClockSetRate( input_thread_t *, input_clock_t *cl, int i_rate );
 318
 319 /* Subtitles */
 320 char **subtitles_Detect( input_thread_t *, char* path, const char *fname );
 321 int subtitles_Filter( const char *);
 322
 323 void MRLSplit( vlc_object_t *, char *, const char **, const char **, char ** );
 324
 325 static inline void input_ChangeState( input_thread_t *p_input, int state )
 326 {
 327     var_SetInteger( p_input, "state", p_input->i_state = state );
 328 }
 329
 330 /* Access */
 331
 332 #define access2_New( a, b, c, d, e ) __access2_New(VLC_OBJECT(a), b, c, d, e )
 333 access_t * __access2_New( vlc_object_t *p_obj, const char *psz_access,
 334                           const char *psz_demux, const char *psz_path,
 335                           vlc_bool_t b_quick );
 336 access_t * access2_FilterNew( access_t *p_source,
 337                               const char *psz_access_filter );
 338 void access2_Delete( access_t * );
 339
 340 /* Demuxer */
 341 #include <vlc_demux.h>
 342
 343 /* stream_t *s could be null and then it mean a access+demux in one */
 344 #define demux2_New( a, b, c, d, e, f,g ) __demux2_New(VLC_OBJECT(a),b,c,d,e,f,g)
 345 demux_t *__demux2_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, vlc_bool_t );
 346
 347 void demux2_Delete(demux_t *);
 348
 349 static inline int demux2_Demux( demux_t *p_demux )
 350 {
 351     return p_demux->pf_demux( p_demux );
 352 }
 353 static inline int demux2_vaControl( demux_t *p_demux, int i_query, va_list args )
 354 {
 355     return p_demux->pf_control( p_demux, i_query, args );
 356 }
 357 static inline int demux2_Control( demux_t *p_demux, int i_query, ... )
 358 {
 359     va_list args;
 360     int     i_result;
 361
 362     va_start( args, i_query );
 363     i_result = demux2_vaControl( p_demux, i_query, args );
 364     va_end( args );
 365     return i_result;
 366 }
 367
 368 /* Stream */
 369 /**
 370  * stream_t definition
 371  */
 372 struct stream_t
 373 {
 374     VLC_COMMON_MEMBERS
 375
 376     /*block_t *(*pf_block)  ( stream_t *, int i_size );*/
 377     int      (*pf_read)   ( stream_t *, void *p_read, int i_read );
 378     int      (*pf_peek)   ( stream_t *, const uint8_t **pp_peek, int i_peek );
 379     int      (*pf_control)( stream_t *, int i_query, va_list );
 380     void     (*pf_destroy)( stream_t *);
 381
 382     stream_sys_t *p_sys;
 383
 384     /* UTF-16 and UTF-32 file reading */
 385     vlc_iconv_t     conv;
 386     int             i_char_width;
 387     vlc_bool_t      b_little_endian;
 388 };
 389
 390 #include <libvlc.h>
 391
 392 static inline stream_t *vlc_stream_create( vlc_object_t *obj )
 393 {
 394     return (stream_t *)vlc_custom_create( obj, sizeof(stream_t),
 395                                           VLC_OBJECT_STREAM, "stream" );
 396 }
 397
 398 #endif