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 #include "mediacontrol_internal.h"
  25
  26 #include <vlc/mediacontrol.h>
  27 #include <vlc/libvlc.h>
  28
  29 #include <vlc_playlist.h>
  30
  31 #include <vlc_aout.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     vlc_object_t* p_cache;
  59     vout_thread_t* p_vout;
  60     mediacontrol_RGBPicture *p_pic = NULL;
  61     char path[256];
  62     snapshot_t *p_snapshot;
  63
  64     mediacontrol_exception_init( exception );
  65
  66     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
  67     if( ! p_vout )
  68     {
  69         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  70     }
  71     p_cache = vlc_object_create( self->p_playlist, VLC_OBJECT_GENERIC );
  72     if( p_cache == NULL )
  73     {
  74         vlc_object_release( p_vout );
  75         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  76     }
  77     snprintf( path, 255, "object:%d", p_cache->i_object_id );
  78     var_SetString( p_vout, "snapshot-path", path );
  79     var_SetString( p_vout, "snapshot-format", "png" );
  80
  81     vlc_mutex_lock( &p_cache->object_lock );
  82     vout_Control( p_vout, VOUT_SNAPSHOT );
  83     vlc_cond_wait( &p_cache->object_wait, &p_cache->object_lock );
  84     vlc_object_release( p_vout );
  85
  86     p_snapshot = ( snapshot_t* ) p_cache->p_private;
  87     vlc_mutex_unlock( &p_cache->object_lock );
  88     vlc_object_destroy( p_cache );
  89
  90     if( p_snapshot )
  91     {
  92         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
  93                                p_snapshot->i_height,
  94                                VLC_FOURCC( 'p','n','g',' ' ),
  95                                p_snapshot->date,
  96                                p_snapshot->p_data,
  97                                p_snapshot->i_datasize );
  98         if( !p_pic )
  99         {
 100             free( p_snapshot->p_data );
 101             free( p_snapshot );
 102             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 103         }
 104     }
 105     else
 106     {
 107         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 108     }
 109     return p_pic;
 110 }
 111
 112 mediacontrol_RGBPicture **
 113 mediacontrol_all_snapshots( mediacontrol_Instance *self,
 114                             mediacontrol_Exception *exception )
 115 {
 116     mediacontrol_exception_init( exception );
 117
 118     RAISE_NULL( mediacontrol_InternalException, "unsupported method" );
 119 }
 120
 121 static
 122 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 123                            char *psz_string, text_style_t *p_style,
 124                            int i_flags, int i_hmargin, int i_vmargin,
 125                            mtime_t i_start, mtime_t i_stop )
 126 {
 127     subpicture_t *p_spu;
 128     video_format_t fmt;
 129
 130     if( !psz_string ) return VLC_EGENERIC;
 131
 132     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 133     if( !p_spu ) return VLC_EGENERIC;
 134
 135     /* Create a new subpicture region */
 136     memset( &fmt, 0, sizeof(video_format_t) );
 137     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 138     fmt.i_aspect = 0;
 139     fmt.i_width = fmt.i_height = 0;
 140     fmt.i_x_offset = fmt.i_y_offset = 0;
 141     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 142     if( !p_spu->p_region )
 143     {
 144         msg_Err( p_vout, "cannot allocate SPU region" );
 145         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 146         return VLC_EGENERIC;
 147     }
 148
 149     p_spu->p_region->psz_text = strdup( psz_string );
 150     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
 151     p_spu->i_start = i_start;
 152     p_spu->i_stop = i_stop;
 153     p_spu->b_ephemer = VLC_FALSE;
 154     p_spu->b_absolute = VLC_FALSE;
 155
 156     p_spu->i_x = i_hmargin;
 157     p_spu->i_y = i_vmargin;
 158     p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
 159     p_spu->i_channel = i_channel;
 160
 161     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 162
 163     return VLC_SUCCESS;
 164 }
 165
 166
 167 void
 168 mediacontrol_display_text( mediacontrol_Instance *self,
 169                            const char * message,
 170                            const mediacontrol_Position * begin,
 171                            const mediacontrol_Position * end,
 172                            mediacontrol_Exception *exception )
 173 {
 174     input_thread_t *p_input = NULL;
 175     vout_thread_t *p_vout = NULL;
 176     char* psz_message;
 177
 178     psz_message = strdup( message );
 179     if( !psz_message )
 180     {
 181         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 182     }
 183
 184     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
 185     if( ! p_vout )
 186     {
 187         RAISE_VOID( mediacontrol_InternalException, "no video output" );
 188     }
 189
 190     if( begin->origin == mediacontrol_RelativePosition &&
 191         begin->value == 0 &&
 192         end->origin == mediacontrol_RelativePosition )
 193     {
 194         mtime_t i_duration = 0;
 195         mtime_t i_now = mdate();
 196
 197         i_duration = 1000 * private_mediacontrol_unit_convert(
 198                                                 self->p_playlist->p_input,
 199                                                 end->key,
 200                                                 mediacontrol_MediaTime,
 201                                                 end->value );
 202
 203         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 204                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 205                                i_now, i_now + i_duration );
 206     }
 207     else
 208     {
 209         mtime_t i_debut, i_fin, i_now;
 210
 211         p_input = self->p_playlist->p_input;
 212         if( ! p_input )
 213         {
 214             vlc_object_release( p_vout );
 215             RAISE_VOID( mediacontrol_InternalException, "No input" );
 216         }
 217
 218         /* FIXME */
 219         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 220         i_now = mdate();
 221
 222         i_debut = private_mediacontrol_position2microsecond( p_input,
 223                                             ( mediacontrol_Position* ) begin );
 224         i_debut += i_now;
 225
 226         i_fin = private_mediacontrol_position2microsecond( p_input,
 227                                           ( mediacontrol_Position * ) end );
 228         i_fin += i_now;
 229
 230         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 231                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 232                                i_debut, i_fin );
 233     }
 234
 235     vlc_object_release( p_vout );
 236 }
 237
 238 unsigned short
 239 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 240                                mediacontrol_Exception *exception )
 241 {
 242     libvlc_exception_t ex;
 243     int i_ret = 0;
 244
 245     mediacontrol_exception_init( exception );
 246     libvlc_exception_init( &ex );
 247
 248     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 249     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 250     /* FIXME: Normalize in [0..100] */
 251     return (unsigned short)i_ret;
 252 }
 253
 254 void
 255 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 256                                const unsigned short volume,
 257                                mediacontrol_Exception *exception )
 258 {
 259     /* FIXME: Normalize in [0..100] */
 260     libvlc_exception_t ex;
 261
 262     mediacontrol_exception_init( exception );
 263     libvlc_exception_init( &ex );
 264
 265     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 266     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 267 }
 268
 269 vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self,
 270                                     WINDOWHANDLE visual_id,
 271                                     mediacontrol_Exception *exception )
 272 {
 273     libvlc_exception_t ex;
 274
 275     mediacontrol_exception_init( exception );
 276     libvlc_exception_init( &ex );
 277
 278     libvlc_video_set_parent( self->p_instance, visual_id, &ex );
 279     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 280     return VLC_TRUE;
 281 }
 282
 283 int
 284 mediacontrol_get_rate( mediacontrol_Instance *self,
 285                mediacontrol_Exception *exception )
 286 {
 287     libvlc_exception_t ex;
 288     libvlc_media_instance_t* p_mi;
 289     int i_ret;
 290
 291     mediacontrol_exception_init( exception );
 292     libvlc_exception_init( &ex );
 293
 294     p_mi = libvlc_playlist_get_media_instance( self->p_instance, &ex );
 295     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 296
 297     i_ret = libvlc_media_instance_get_rate( p_mi, &ex );
 298     libvlc_media_instance_release( p_mi );
 299     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 300
 301     return i_ret / 10;
 302 }
 303
 304 void
 305 mediacontrol_set_rate( mediacontrol_Instance *self,
 306                const int rate,
 307                mediacontrol_Exception *exception )
 308 {
 309     libvlc_exception_t ex;
 310     libvlc_media_instance_t* p_mi;
 311
 312     mediacontrol_exception_init( exception );
 313     libvlc_exception_init( &ex );
 314
 315     p_mi = libvlc_playlist_get_media_instance( self->p_instance, &ex );
 316     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 317
 318     libvlc_media_instance_set_rate( p_mi, rate * 10, &ex );
 319     libvlc_media_instance_release( p_mi );
 320     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 321 }
 322
 323 int
 324 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 325                  mediacontrol_Exception *exception )
 326 {
 327     libvlc_exception_t ex;
 328     libvlc_media_instance_t* p_mi;
 329     int i_ret;
 330
 331     mediacontrol_exception_init( exception );
 332     libvlc_exception_init( &ex );
 333
 334     p_mi = libvlc_playlist_get_media_instance( self->p_instance, &ex );
 335     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 336
 337     i_ret = libvlc_get_fullscreen( p_mi, &ex );
 338     libvlc_media_instance_release( p_mi );
 339     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 340
 341     return i_ret;
 342 }
 343
 344 void
 345 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 346                  const int b_fullscreen,
 347                  mediacontrol_Exception *exception )
 348 {
 349     libvlc_exception_t ex;
 350     libvlc_media_instance_t* p_mi;
 351
 352     mediacontrol_exception_init( exception );
 353     libvlc_exception_init( &ex );
 354
 355     p_mi = libvlc_playlist_get_media_instance( self->p_instance, &ex );
 356     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 357
 358     libvlc_set_fullscreen( p_mi, b_fullscreen, &ex );
 359     libvlc_media_instance_release( p_mi );
 360     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 361 }