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
  29 #include <vlc/mediacontrol.h>
  30 #include <vlc/libvlc.h>
  31
  32 #include <vlc_playlist.h>
  33
  34 #include <vlc_aout.h>
  35
  36 #include <vlc_vout.h>
  37 #include <vlc_osd.h>
  38
  39 #include <stdlib.h>                                      /* malloc(), free() */
  40 #include <string.h>
  41
  42 #include <errno.h>                                                 /* ENOMEM */
  43 #include <stdio.h>
  44 #include <ctype.h>
  45
  46 #ifdef HAVE_UNISTD_H
  47 #    include <unistd.h>
  48 #endif
  49 #ifdef HAVE_SYS_TIME_H
  50 #    include <sys/time.h>
  51 #endif
  52 #ifdef HAVE_SYS_TYPES_H
  53 #    include <sys/types.h>
  54 #endif
  55
  56 mediacontrol_RGBPicture *
  57 mediacontrol_snapshot( mediacontrol_Instance *self,
  58                        const mediacontrol_Position * a_position,
  59                        mediacontrol_Exception *exception )
  60 {
  61     vlc_object_t* p_cache;
  62     vout_thread_t* p_vout;
  63     mediacontrol_RGBPicture *p_pic = NULL;
  64     char path[256];
  65     snapshot_t *p_snapshot;
  66
  67     mediacontrol_exception_init( exception );
  68
  69     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
  70     if( ! p_vout )
  71     {
  72         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  73     }
  74     p_cache = vlc_object_create( self->p_playlist, VLC_OBJECT_GENERIC );
  75     if( p_cache == NULL )
  76     {
  77         vlc_object_release( p_vout );
  78         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  79     }
  80     snprintf( path, 255, "object:%d", p_cache->i_object_id );
  81     var_SetString( p_vout, "snapshot-path", path );
  82     var_SetString( p_vout, "snapshot-format", "png" );
  83
  84     vlc_object_lock( p_cache );
  85     vout_Control( p_vout, VOUT_SNAPSHOT );
  86     vlc_object_wait( p_cache );
  87     vlc_object_release( p_vout );
  88
  89     p_snapshot = ( snapshot_t* ) p_cache->p_private;
  90     vlc_object_unlock( p_cache );
  91     vlc_object_release( p_cache );
  92
  93     if( p_snapshot )
  94     {
  95         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
  96                                p_snapshot->i_height,
  97                                VLC_FOURCC( 'p','n','g',' ' ),
  98                                p_snapshot->date,
  99                                p_snapshot->p_data,
 100                                p_snapshot->i_datasize );
 101         if( !p_pic )
 102         {
 103             free( p_snapshot->p_data );
 104             free( p_snapshot );
 105             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 106         }
 107     }
 108     else
 109     {
 110         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 111     }
 112     return p_pic;
 113 }
 114
 115 mediacontrol_RGBPicture **
 116 mediacontrol_all_snapshots( mediacontrol_Instance *self,
 117                             mediacontrol_Exception *exception )
 118 {
 119     mediacontrol_exception_init( exception );
 120
 121     RAISE_NULL( mediacontrol_InternalException, "unsupported method" );
 122 }
 123
 124 static
 125 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 126                            char *psz_string, text_style_t *p_style,
 127                            int i_flags, int i_hmargin, int i_vmargin,
 128                            mtime_t i_start, mtime_t i_stop )
 129 {
 130     subpicture_t *p_spu;
 131     video_format_t fmt;
 132
 133     if( !psz_string ) return VLC_EGENERIC;
 134
 135     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 136     if( !p_spu ) return VLC_EGENERIC;
 137
 138     /* Create a new subpicture region */
 139     memset( &fmt, 0, sizeof(video_format_t) );
 140     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 141     fmt.i_aspect = 0;
 142     fmt.i_width = fmt.i_height = 0;
 143     fmt.i_x_offset = fmt.i_y_offset = 0;
 144     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 145     if( !p_spu->p_region )
 146     {
 147         msg_Err( p_vout, "cannot allocate SPU region" );
 148         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 149         return VLC_EGENERIC;
 150     }
 151
 152     p_spu->p_region->psz_text = strdup( psz_string );
 153     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
 154     p_spu->i_start = i_start;
 155     p_spu->i_stop = i_stop;
 156     p_spu->b_ephemer = false;
 157     p_spu->b_absolute = false;
 158
 159     p_spu->i_x = i_hmargin;
 160     p_spu->i_y = i_vmargin;
 161     p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
 162     p_spu->i_channel = i_channel;
 163
 164     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 165
 166     return VLC_SUCCESS;
 167 }
 168
 169
 170 void
 171 mediacontrol_display_text( mediacontrol_Instance *self,
 172                            const char * message,
 173                            const mediacontrol_Position * begin,
 174                            const mediacontrol_Position * end,
 175                            mediacontrol_Exception *exception )
 176 {
 177     input_thread_t *p_input = NULL;
 178     vout_thread_t *p_vout = NULL;
 179     char* psz_message;
 180
 181     psz_message = strdup( message );
 182     if( !psz_message )
 183     {
 184         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 185     }
 186
 187     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
 188     if( ! p_vout )
 189     {
 190         RAISE_VOID( mediacontrol_InternalException, "no video output" );
 191     }
 192
 193     if( begin->origin == mediacontrol_RelativePosition &&
 194         begin->value == 0 &&
 195         end->origin == mediacontrol_RelativePosition )
 196     {
 197         mtime_t i_duration = 0;
 198         mtime_t i_now = mdate();
 199
 200         i_duration = 1000 * private_mediacontrol_unit_convert(
 201                                                 self->p_playlist->p_input,
 202                                                 end->key,
 203                                                 mediacontrol_MediaTime,
 204                                                 end->value );
 205
 206         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 207                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 208                                i_now, i_now + i_duration );
 209     }
 210     else
 211     {
 212         mtime_t i_debut, i_fin, i_now;
 213
 214         p_input = self->p_playlist->p_input;
 215         if( ! p_input )
 216         {
 217             vlc_object_release( p_vout );
 218             RAISE_VOID( mediacontrol_InternalException, "No input" );
 219         }
 220
 221         /* FIXME */
 222         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 223         i_now = mdate();
 224
 225         i_debut = private_mediacontrol_position2microsecond( p_input,
 226                                             ( mediacontrol_Position* ) begin );
 227         i_debut += i_now;
 228
 229         i_fin = private_mediacontrol_position2microsecond( p_input,
 230                                           ( mediacontrol_Position * ) end );
 231         i_fin += i_now;
 232
 233         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 234                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 235                                i_debut, i_fin );
 236     }
 237
 238     vlc_object_release( p_vout );
 239 }
 240
 241 unsigned short
 242 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 243                                mediacontrol_Exception *exception )
 244 {
 245     libvlc_exception_t ex;
 246     int i_ret = 0;
 247
 248     mediacontrol_exception_init( exception );
 249     libvlc_exception_init( &ex );
 250
 251     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 252     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 253     /* FIXME: Normalize in [0..100] */
 254     return (unsigned short)i_ret;
 255 }
 256
 257 void
 258 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 259                                const unsigned short volume,
 260                                mediacontrol_Exception *exception )
 261 {
 262     /* FIXME: Normalize in [0..100] */
 263     libvlc_exception_t ex;
 264
 265     mediacontrol_exception_init( exception );
 266     libvlc_exception_init( &ex );
 267
 268     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 269     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 270 }
 271
 272 bool mediacontrol_set_visual( mediacontrol_Instance *self,
 273                                     WINDOWHANDLE visual_id,
 274                                     mediacontrol_Exception *exception )
 275 {
 276     libvlc_exception_t ex;
 277
 278     mediacontrol_exception_init( exception );
 279     libvlc_exception_init( &ex );
 280
 281     libvlc_video_set_parent( self->p_instance, visual_id, &ex );
 282     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 283     return true;
 284 }
 285
 286 int
 287 mediacontrol_get_rate( mediacontrol_Instance *self,
 288                mediacontrol_Exception *exception )
 289 {
 290     libvlc_exception_t ex;
 291     libvlc_media_player_t* p_mi;
 292     int i_ret;
 293
 294     mediacontrol_exception_init( exception );
 295     libvlc_exception_init( &ex );
 296
 297     p_mi = libvlc_playlist_get_media_player( self->p_instance, &ex );
 298     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 299
 300     i_ret = libvlc_media_player_get_rate( p_mi, &ex );
 301     libvlc_media_player_release( p_mi );
 302     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 303
 304     return i_ret / 10;
 305 }
 306
 307 void
 308 mediacontrol_set_rate( mediacontrol_Instance *self,
 309                const int rate,
 310                mediacontrol_Exception *exception )
 311 {
 312     libvlc_exception_t ex;
 313     libvlc_media_player_t* p_mi;
 314
 315     mediacontrol_exception_init( exception );
 316     libvlc_exception_init( &ex );
 317
 318     p_mi = libvlc_playlist_get_media_player( self->p_instance, &ex );
 319     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 320
 321     libvlc_media_player_set_rate( p_mi, rate * 10, &ex );
 322     libvlc_media_player_release( p_mi );
 323     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 324 }
 325
 326 int
 327 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 328                  mediacontrol_Exception *exception )
 329 {
 330     libvlc_exception_t ex;
 331     libvlc_media_player_t* p_mi;
 332     int i_ret;
 333
 334     mediacontrol_exception_init( exception );
 335     libvlc_exception_init( &ex );
 336
 337     p_mi = libvlc_playlist_get_media_player( self->p_instance, &ex );
 338     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 339
 340     i_ret = libvlc_get_fullscreen( p_mi, &ex );
 341     libvlc_media_player_release( p_mi );
 342     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 343
 344     return i_ret;
 345 }
 346
 347 void
 348 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 349                  const int b_fullscreen,
 350                  mediacontrol_Exception *exception )
 351 {
 352     libvlc_exception_t ex;
 353     libvlc_media_player_t* p_mi;
 354
 355     mediacontrol_exception_init( exception );
 356     libvlc_exception_init( &ex );
 357
 358     p_mi = libvlc_playlist_get_media_player( self->p_instance, &ex );
 359     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 360
 361     libvlc_set_fullscreen( p_mi, b_fullscreen, &ex );
 362     libvlc_media_player_release( p_mi );
 363     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 364 }