src/libvlc.h

   1 /*****************************************************************************
   2  * libvlc.h: Internal libvlc generic/misc declaration
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000, 2001, 2002 VLC authors and VideoLAN
   5  * Copyright © 2006-2007 Rémi Denis-Courmont
   6  * $Id$
   7  *
   8  * Authors: Vincent Seguin <seguin@via.ecp.fr>
   9  *
  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.
  14  *
  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.
  19  *
  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  *****************************************************************************/
  24
  25 #ifndef LIBVLC_LIBVLC_H
  26 # define LIBVLC_LIBVLC_H 1
  27
  28 extern const char psz_vlc_changeset[];
  29
  30 typedef struct variable_t variable_t;
  31
  32 /* Actions (hot keys) */
  33 struct vlc_actions;
  34 struct vlc_actions *vlc_InitActions (libvlc_int_t *);
  35 extern void vlc_DeinitActions (libvlc_int_t *, struct vlc_actions *);
  36
  37 size_t vlc_towc (const char *str, uint32_t *restrict pwc);
  38
  39 /*
  40  * OS-specific initialization
  41  */
  42 void system_Init      ( void );
  43 void system_Configure ( libvlc_int_t *, int, const char *const [] );
  44 #if defined(_WIN32) || defined(__OS2__)
  45 void system_End(void);
  46 #ifndef __OS2__
  47 size_t EnumClockSource( vlc_object_t *, const char *, char ***, char *** );
  48 #endif
  49 #endif
  50 void vlc_CPU_init(void);
  51 void vlc_CPU_dump(vlc_object_t *);
  52
  53 /*
  54  * Threads subsystem
  55  */
  56
  57 /* This cannot be used as is from plugins yet: */
  58 int vlc_clone_detach (vlc_thread_t *, void *(*)(void *), void *, int);
  59
  60 int vlc_object_waitpipe (vlc_object_t *obj);
  61 void ObjectKillChildrens (vlc_object_t *);
  62
  63 int vlc_set_priority( vlc_thread_t, int );
  64
  65 void vlc_threads_setup (libvlc_int_t *);
  66
  67 void vlc_trace (const char *fn, const char *file, unsigned line);
  68 #define vlc_backtrace() vlc_trace(__func__, __FILE__, __LINE__)
  69
  70 #if (defined (LIBVLC_USE_PTHREAD) || defined(__ANDROID__)) && !defined (NDEBUG)
  71 void vlc_assert_locked (vlc_mutex_t *);
  72 #else
  73 # define vlc_assert_locked( m ) (void)m
  74 #endif
  75
  76 /*
  77  * Logging
  78  */
  79 void vlc_LogInit(libvlc_int_t *);
  80 void vlc_LogDeinit(libvlc_int_t *);
  81
  82 /*
  83  * LibVLC exit event handling
  84  */
  85 typedef struct vlc_exit
  86 {
  87     vlc_mutex_t lock;
  88     void (*handler) (void *);
  89     void *opaque;
  90 } vlc_exit_t;
  91
  92 void vlc_ExitInit( vlc_exit_t * );
  93 void vlc_ExitDestroy( vlc_exit_t * );
  94
  95 /*
  96  * LibVLC objects stuff
  97  */
  98
  99 /**
 100  * Creates a VLC object.
 101  *
 102  * Note that because the object name pointer must remain valid, potentially
 103  * even after the destruction of the object (through the message queues), this
 104  * function CANNOT be exported to plugins as is. In this case, the old
 105  * vlc_object_create() must be used instead.
 106  *
 107  * @param p_this an existing VLC object
 108  * @param i_size byte size of the object structure
 109  * @param psz_type object type name
 110  * @return the created object, or NULL.
 111  */
 112 extern void *
 113 vlc_custom_create (vlc_object_t *p_this, size_t i_size, const char *psz_type);
 114 #define vlc_custom_create(o, s, n) \
 115         vlc_custom_create(VLC_OBJECT(o), s, n)
 116
 117 /**
 118  * Assign a name to an object for vlc_object_find_name().
 119  */
 120 extern int vlc_object_set_name(vlc_object_t *, const char *);
 121 #define vlc_object_set_name(o, n) vlc_object_set_name(VLC_OBJECT(o), n)
 122
 123 /* Types */
 124 typedef void (*vlc_destructor_t) (struct vlc_object_t *);
 125 void vlc_object_set_destructor (vlc_object_t *, vlc_destructor_t);
 126 #define vlc_object_set_destructor(a,b) \
 127         vlc_object_set_destructor (VLC_OBJECT(a), b)
 128
 129 /*
 130  * To be cleaned-up module stuff:
 131  */
 132 module_t *module_find_by_shortcut (const char *psz_shortcut);
 133
 134 #define ZOOM_SECTION N_("Zoom")
 135 #define ZOOM_QUARTER_KEY_TEXT N_("1:4 Quarter")
 136 #define ZOOM_HALF_KEY_TEXT N_("1:2 Half")
 137 #define ZOOM_ORIGINAL_KEY_TEXT N_("1:1 Original")
 138 #define ZOOM_DOUBLE_KEY_TEXT N_("2:1 Double")
 139
 140 typedef struct sap_handler_t sap_handler_t;
 141
 142 /**
 143  * Private LibVLC instance data.
 144  */
 145 typedef struct libvlc_priv_t
 146 {
 147     libvlc_int_t       public_data;
 148
 149     /* Logging */
 150     struct
 151     {
 152         void (*cb) (void *, int, const vlc_log_t *, const char *, va_list);
 153         void *opaque;
 154         signed char verbose;
 155         vlc_rwlock_t lock;
 156     } log;
 157     bool               b_stats;     ///< Whether to collect stats
 158
 159     /* Singleton objects */
 160     playlist_t        *p_playlist; ///< the playlist singleton
 161     vlm_t             *p_vlm;  ///< the VLM singleton (or NULL)
 162     vlc_object_t      *p_dialog_provider; ///< dialog provider
 163 #ifdef ENABLE_SOUT
 164     sap_handler_t     *p_sap; ///< SAP SDP advertiser
 165 #endif
 166     struct vlc_actions *actions; ///< Hotkeys handler
 167
 168     /* Interfaces */
 169     struct intf_thread_t *p_intf; ///< Interfaces linked-list
 170
 171     /* Objects tree */
 172     vlc_mutex_t        structure_lock;
 173
 174     /* Exit callback */
 175     vlc_exit_t       exit;
 176 } libvlc_priv_t;
 177
 178 static inline libvlc_priv_t *libvlc_priv (libvlc_int_t *libvlc)
 179 {
 180     return (libvlc_priv_t *)libvlc;
 181 }
 182
 183 void playlist_ServicesDiscoveryKillAll( playlist_t *p_playlist );
 184 void intf_DestroyAll( libvlc_int_t * );
 185
 186 #define libvlc_stats( o ) (libvlc_priv((VLC_OBJECT(o))->p_libvlc)->b_stats)
 187
 188 /*
 189  * Variables stuff
 190  */
 191 void var_OptionParse (vlc_object_t *, const char *, bool trusted);
 192
 193 /*
 194  * Stats stuff
 195  */
 196 enum
 197 {
 198     STATS_COUNTER,
 199     STATS_DERIVATIVE,
 200 };
 201
 202 typedef struct counter_sample_t
 203 {
 204     uint64_t value;
 205     mtime_t  date;
 206 } counter_sample_t;
 207
 208 typedef struct counter_t
 209 {
 210     int                 i_compute_type;
 211     int                 i_samples;
 212     counter_sample_t ** pp_samples;
 213
 214     mtime_t             last_update;
 215 } counter_t;
 216
 217 enum
 218 {
 219     STATS_INPUT_BITRATE,
 220     STATS_READ_BYTES,
 221     STATS_READ_PACKETS,
 222     STATS_DEMUX_READ,
 223     STATS_DEMUX_BITRATE,
 224     STATS_DEMUX_CORRUPTED,
 225     STATS_DEMUX_DISCONTINUITY,
 226     STATS_PLAYED_ABUFFERS,
 227     STATS_LOST_ABUFFERS,
 228     STATS_DECODED_AUDIO,
 229     STATS_DECODED_VIDEO,
 230     STATS_DECODED_SUB,
 231     STATS_CLIENT_CONNECTIONS,
 232     STATS_ACTIVE_CONNECTIONS,
 233     STATS_SOUT_SENT_PACKETS,
 234     STATS_SOUT_SENT_BYTES,
 235     STATS_SOUT_SEND_BITRATE,
 236     STATS_DISPLAYED_PICTURES,
 237     STATS_LOST_PICTURES,
 238 };
 239
 240 counter_t * stats_CounterCreate (int);
 241 void stats_Update (counter_t *, uint64_t, uint64_t *);
 242 void stats_CounterClean (counter_t * );
 243
 244 void stats_ComputeInputStats(input_thread_t*, input_stats_t*);
 245 void stats_ReinitInputStats(input_stats_t *);
 246
 247 #endif