git.sesse.net Git - vlc/blob - src/control/mediacontrol_audio_video.c

   1 /*****************************************************************************
   2  * audio_video.c: Audio/Video management : volume, snapshot, OSD
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.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 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27 #include "mediacontrol_internal.h"
  28 #include "libvlc_internal.h"
  29
  30 #include <vlc/mediacontrol.h>
  31 #include <vlc/libvlc.h>
  32
  33 #include <vlc_vout.h>
  34 #include <vlc_osd.h>
  35
  36 #include <stdlib.h>                                      /* malloc(), free() */
  37 #include <string.h>
  38
  39 #include <errno.h>                                                 /* ENOMEM */
  40 #include <stdio.h>
  41 #include <ctype.h>
  42
  43 #ifdef HAVE_UNISTD_H
  44 #    include <unistd.h>
  45 #endif
  46 #ifdef HAVE_SYS_TIME_H
  47 #    include <sys/time.h>
  48 #endif
  49 #ifdef HAVE_SYS_TYPES_H
  50 #    include <sys/types.h>
  51 #endif
  52
  53 mediacontrol_RGBPicture *
  54 mediacontrol_snapshot( mediacontrol_Instance *self,
  55                        const mediacontrol_Position * a_position,
  56                        mediacontrol_Exception *exception )
  57 {
  58     (void)a_position;
  59     vout_thread_t* p_vout;
  60     input_thread_t *p_input;
  61     mediacontrol_RGBPicture *p_pic = NULL;
  62     char path[256];
  63     snapshot_t *p_snapshot;
  64     libvlc_exception_t ex;
  65
  66     libvlc_exception_init( &ex );
  67     mediacontrol_exception_init( exception );
  68
  69
  70     p_snapshot = malloc( sizeof( snapshot_t ) );
  71     if( ! p_snapshot )
  72     {
  73         RAISE_NULL( mediacontrol_InternalException, "Cannot allocate snapshot" );
  74     }
  75
  76     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
  77     if( ! p_input )
  78     {
  79         RAISE_NULL( mediacontrol_InternalException, "No input" );
  80     }
  81
  82     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
  83     vlc_object_release( p_input );
  84     if( ! p_vout )
  85     {
  86         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  87     }
  88
  89     /* TODO:
  90    vlc_mutex_lock (&lock);
  91    mutex_cleanup_push (&lock); // release the mutex in case of cancellation
  92
  93    while (!foobar)
  94        vlc_cond_wait (&wait, &lock);
  95
  96    --- foobar is now true, do something about it here --
  97
  98    vlc_cleanup_run (); // release the mutex
  99     */
 100
 101     snprintf( path, 255, "object:%p", p_snapshot );
 102     var_SetString( p_vout, "snapshot-path", path );
 103     var_SetString( p_vout, "snapshot-format", "png" );
 104
 105     vlc_mutex_init( &p_snapshot->p_mutex );
 106     vlc_cond_init( &p_snapshot->p_condvar );
 107
 108     vlc_mutex_lock( &p_snapshot->p_mutex );
 109     mutex_cleanup_push( &p_snapshot->p_mutex );
 110
 111     /* Use p_snapshot address as sentinel against spurious vlc_object_wait wakeups.
 112
 113        If a legitimate wakeup occurs, then p_snapshot->p_data will hold either
 114        NULL (in case of error) or a pointer to valid data. */
 115     p_snapshot->p_data = ( char* )p_snapshot;
 116
 117     vout_Control( p_vout, VOUT_SNAPSHOT );
 118     while ( p_snapshot->p_data == ( char* )p_snapshot )
 119     {
 120         vlc_cond_wait( &p_snapshot->p_condvar, &p_snapshot->p_mutex );
 121     }
 122     vlc_cleanup_pop();
 123
 124     vlc_object_release( p_vout );
 125
 126     vlc_mutex_unlock( &p_snapshot->p_mutex );
 127     vlc_cond_destroy( &p_snapshot->p_condvar );
 128     vlc_mutex_destroy( &p_snapshot->p_mutex );
 129
 130     if( p_snapshot->p_data )
 131     {
 132         /* Note: p_snapshot->p_data is directly used, not copied. Thus
 133            do not free it here. */
 134         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
 135                                                        p_snapshot->i_height,
 136                                                        VLC_FOURCC( 'p','n','g',' ' ),
 137                                                        p_snapshot->date,
 138                                                        p_snapshot->p_data,
 139                                                        p_snapshot->i_datasize );
 140         if( !p_pic )
 141         {
 142             free( p_snapshot );
 143             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 144         }
 145     }
 146     else
 147     {
 148         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 149     }
 150     return p_pic;
 151 }
 152
 153 static
 154 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 155                            const char *psz_string, text_style_t *p_style,
 156                            int i_flags, int i_hmargin, int i_vmargin,
 157                            mtime_t i_start, mtime_t i_stop )
 158 {
 159     return osd_ShowTextAbsolute( p_vout->p_spu, i_channel,
 160                                  psz_string, p_style,
 161                                  i_flags, i_hmargin, i_vmargin,
 162                                  i_start, i_stop );
 163 }
 164
 165
 166 void
 167 mediacontrol_display_text( mediacontrol_Instance *self,
 168                            const char * message,
 169                            const mediacontrol_Position * begin,
 170                            const mediacontrol_Position * end,
 171                            mediacontrol_Exception *exception )
 172 {
 173     vout_thread_t *p_vout = NULL;
 174     input_thread_t *p_input;
 175     libvlc_exception_t ex;
 176
 177     libvlc_exception_init( &ex );
 178     mediacontrol_exception_init( exception );
 179
 180     if( !message )
 181     {
 182         RAISE_VOID( mediacontrol_InternalException, "Empty text" );
 183     }
 184
 185     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 186     if( ! p_input )
 187     {
 188         RAISE_VOID( mediacontrol_InternalException, "No input" );
 189     }
 190     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
 191     if( ! p_vout )
 192     {
 193         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 194     }
 195
 196     if( begin->origin == mediacontrol_RelativePosition &&
 197         begin->value == 0 &&
 198         end->origin == mediacontrol_RelativePosition )
 199     {
 200         mtime_t i_duration = 0;
 201         mtime_t i_now = mdate();
 202
 203         i_duration = 1000 * private_mediacontrol_unit_convert(
 204                                                               self->p_media_player,
 205                                                               end->key,
 206                                                               mediacontrol_MediaTime,
 207                                                               end->value );
 208
 209         mediacontrol_showtext( p_vout, DEFAULT_CHAN, message, NULL,
 210                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 211                                i_now, i_now + i_duration );
 212     }
 213     else
 214     {
 215         mtime_t i_debut, i_fin, i_now;
 216
 217         /* FIXME */
 218         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 219         i_now = mdate();
 220
 221         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 222                                             ( mediacontrol_Position* ) begin );
 223         i_debut += i_now;
 224
 225         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 226                                           ( mediacontrol_Position * ) end );
 227         i_fin += i_now;
 228
 229         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, message, NULL,
 230                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 231                                i_debut, i_fin );
 232     }
 233
 234     vlc_object_release( p_vout );
 235 }
 236
 237 unsigned short
 238 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 239                                mediacontrol_Exception *exception )
 240 {
 241     libvlc_exception_t ex;
 242     int i_ret = 0;
 243
 244     mediacontrol_exception_init( exception );
 245     libvlc_exception_init( &ex );
 246
 247     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 248     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 249     /* FIXME: Normalize in [0..100] */
 250     return (unsigned short)i_ret;
 251 }
 252
 253 void
 254 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 255                                const unsigned short volume,
 256                                mediacontrol_Exception *exception )
 257 {
 258     /* FIXME: Normalize in [0..100] */
 259     libvlc_exception_t ex;
 260
 261     mediacontrol_exception_init( exception );
 262     libvlc_exception_init( &ex );
 263
 264     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 265     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 266 }
 267
 268 int mediacontrol_set_visual( mediacontrol_Instance *self,
 269                                     WINDOWHANDLE visual_id,
 270                                     mediacontrol_Exception *exception )
 271 {
 272     libvlc_exception_t ex;
 273
 274     mediacontrol_exception_init( exception );
 275     libvlc_exception_init( &ex );
 276
 277     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
 278     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 279     return true;
 280 }
 281
 282 int
 283 mediacontrol_get_rate( mediacontrol_Instance *self,
 284                mediacontrol_Exception *exception )
 285 {
 286     libvlc_exception_t ex;
 287     int i_ret;
 288
 289     mediacontrol_exception_init( exception );
 290     libvlc_exception_init( &ex );
 291
 292     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 293     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 294
 295     return i_ret / 10;
 296 }
 297
 298 void
 299 mediacontrol_set_rate( mediacontrol_Instance *self,
 300                const int rate,
 301                mediacontrol_Exception *exception )
 302 {
 303     libvlc_exception_t ex;
 304
 305     mediacontrol_exception_init( exception );
 306     libvlc_exception_init( &ex );
 307
 308     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
 309     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 310 }
 311
 312 int
 313 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 314                  mediacontrol_Exception *exception )
 315 {
 316     libvlc_exception_t ex;
 317     int i_ret;
 318
 319     mediacontrol_exception_init( exception );
 320     libvlc_exception_init( &ex );
 321
 322     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 323     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 324
 325     return i_ret;
 326 }
 327
 328 void
 329 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 330                  const int b_fullscreen,
 331                  mediacontrol_Exception *exception )
 332 {
 333     libvlc_exception_t ex;
 334
 335     mediacontrol_exception_init( exception );
 336     libvlc_exception_init( &ex );
 337
 338     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 339     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 340 }