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     snprintf( path, 255, "object:%p", p_snapshot );
  90     var_SetString( p_vout, "snapshot-path", path );
  91     var_SetString( p_vout, "snapshot-format", "png" );
  92
  93     vlc_mutex_init( &p_snapshot->p_mutex );
  94     vlc_cond_init( &p_snapshot->p_condvar );
  95
  96     vlc_mutex_lock( &p_snapshot->p_mutex );
  97     mutex_cleanup_push( &p_snapshot->p_mutex );
  98
  99     /* Use p_snapshot address as sentinel against spurious vlc_object_wait wakeups.
 100
 101        If a legitimate wakeup occurs, then p_snapshot->p_data will hold either
 102        NULL (in case of error) or a pointer to valid data. */
 103     p_snapshot->p_data = ( char* )p_snapshot;
 104
 105     vout_Control( p_vout, VOUT_SNAPSHOT );
 106     while ( p_snapshot->p_data == ( char* )p_snapshot )
 107     {
 108         vlc_cond_wait( &p_snapshot->p_condvar, &p_snapshot->p_mutex );
 109     }
 110     vlc_cleanup_pop();
 111
 112     vlc_object_release( p_vout );
 113
 114     vlc_mutex_unlock( &p_snapshot->p_mutex );
 115     vlc_cond_destroy( &p_snapshot->p_condvar );
 116     vlc_mutex_destroy( &p_snapshot->p_mutex );
 117
 118     if( p_snapshot->p_data )
 119     {
 120         /* Note: p_snapshot->p_data is directly used, not copied. Thus
 121            do not free it here. */
 122         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
 123                                                        p_snapshot->i_height,
 124                                                        VLC_FOURCC( 'p','n','g',' ' ),
 125                                                        p_snapshot->date,
 126                                                        p_snapshot->p_data,
 127                                                        p_snapshot->i_datasize );
 128         if( !p_pic )
 129         {
 130             free( p_snapshot );
 131             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 132         }
 133     }
 134     else
 135     {
 136         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 137     }
 138     return p_pic;
 139 }
 140
 141 static
 142 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 143                            const char *psz_string, text_style_t *p_style,
 144                            int i_flags, int i_hmargin, int i_vmargin,
 145                            mtime_t i_start, mtime_t i_stop )
 146 {
 147     return osd_ShowTextAbsolute( p_vout->p_spu, i_channel,
 148                                  psz_string, p_style,
 149                                  i_flags, i_hmargin, i_vmargin,
 150                                  i_start, i_stop );
 151 }
 152
 153
 154 void
 155 mediacontrol_display_text( mediacontrol_Instance *self,
 156                            const char * message,
 157                            const mediacontrol_Position * begin,
 158                            const mediacontrol_Position * end,
 159                            mediacontrol_Exception *exception )
 160 {
 161     vout_thread_t *p_vout = NULL;
 162     input_thread_t *p_input;
 163     libvlc_exception_t ex;
 164
 165     libvlc_exception_init( &ex );
 166     mediacontrol_exception_init( exception );
 167
 168     if( !message )
 169     {
 170         RAISE_VOID( mediacontrol_InternalException, "Empty text" );
 171     }
 172
 173     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 174     if( ! p_input )
 175     {
 176         RAISE_VOID( mediacontrol_InternalException, "No input" );
 177     }
 178     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
 179     if( ! p_vout )
 180     {
 181         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 182     }
 183
 184     if( begin->origin == mediacontrol_RelativePosition &&
 185         begin->value == 0 &&
 186         end->origin == mediacontrol_RelativePosition )
 187     {
 188         mtime_t i_duration = 0;
 189         mtime_t i_now = mdate();
 190
 191         i_duration = 1000 * private_mediacontrol_unit_convert(
 192                                                               self->p_media_player,
 193                                                               end->key,
 194                                                               mediacontrol_MediaTime,
 195                                                               end->value );
 196
 197         mediacontrol_showtext( p_vout, DEFAULT_CHAN, message, NULL,
 198                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 199                                i_now, i_now + i_duration );
 200     }
 201     else
 202     {
 203         mtime_t i_debut, i_fin, i_now;
 204
 205         /* FIXME */
 206         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 207         i_now = mdate();
 208
 209         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 210                                             ( mediacontrol_Position* ) begin );
 211         i_debut += i_now;
 212
 213         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 214                                           ( mediacontrol_Position * ) end );
 215         i_fin += i_now;
 216
 217         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, message, NULL,
 218                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 219                                i_debut, i_fin );
 220     }
 221
 222     vlc_object_release( p_vout );
 223 }
 224
 225 unsigned short
 226 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 227                                mediacontrol_Exception *exception )
 228 {
 229     libvlc_exception_t ex;
 230     int i_ret = 0;
 231
 232     mediacontrol_exception_init( exception );
 233     libvlc_exception_init( &ex );
 234
 235     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 236     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 237     /* FIXME: Normalize in [0..100] */
 238     return (unsigned short)i_ret;
 239 }
 240
 241 void
 242 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 243                                const unsigned short volume,
 244                                mediacontrol_Exception *exception )
 245 {
 246     /* FIXME: Normalize in [0..100] */
 247     libvlc_exception_t ex;
 248
 249     mediacontrol_exception_init( exception );
 250     libvlc_exception_init( &ex );
 251
 252     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 253     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 254 }
 255
 256 int mediacontrol_set_visual( mediacontrol_Instance *self,
 257                                     WINDOWHANDLE visual_id,
 258                                     mediacontrol_Exception *exception )
 259 {
 260     libvlc_exception_t ex;
 261
 262     mediacontrol_exception_init( exception );
 263     libvlc_exception_init( &ex );
 264
 265     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
 266     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 267     return true;
 268 }
 269
 270 int
 271 mediacontrol_get_rate( mediacontrol_Instance *self,
 272                mediacontrol_Exception *exception )
 273 {
 274     libvlc_exception_t ex;
 275     int i_ret;
 276
 277     mediacontrol_exception_init( exception );
 278     libvlc_exception_init( &ex );
 279
 280     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 281     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 282
 283     return i_ret / 10;
 284 }
 285
 286 void
 287 mediacontrol_set_rate( mediacontrol_Instance *self,
 288                const int rate,
 289                mediacontrol_Exception *exception )
 290 {
 291     libvlc_exception_t ex;
 292
 293     mediacontrol_exception_init( exception );
 294     libvlc_exception_init( &ex );
 295
 296     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
 297     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 298 }
 299
 300 int
 301 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 302                  mediacontrol_Exception *exception )
 303 {
 304     libvlc_exception_t ex;
 305     int i_ret;
 306
 307     mediacontrol_exception_init( exception );
 308     libvlc_exception_init( &ex );
 309
 310     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 311     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 312
 313     return i_ret;
 314 }
 315
 316 void
 317 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 318                  const int b_fullscreen,
 319                  mediacontrol_Exception *exception )
 320 {
 321     libvlc_exception_t ex;
 322
 323     mediacontrol_exception_init( exception );
 324     libvlc_exception_init( &ex );
 325
 326     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 327     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 328 }