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     exception=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_object_destroy( p_cache );
  88
  89     if( p_snapshot )
  90     {
  91         p_pic = _mediacontrol_createRGBPicture( p_snapshot->i_width,
  92                                                 p_snapshot->i_height,
  93                                                 VLC_FOURCC( 'p','n','g',' ' ),
  94                                                 p_snapshot->date,
  95                                                 p_snapshot->p_data,
  96                                                 p_snapshot->i_datasize );
  97         if( !p_pic )
  98         {
  99             free( p_snapshot->p_data );
 100             free( p_snapshot );
 101             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 102         }
 103     }
 104     else
 105     {
 106         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 107     }
 108     return p_pic;
 109 }
 110
 111 mediacontrol_RGBPicture **
 112 mediacontrol_all_snapshots( mediacontrol_Instance *self,
 113                             mediacontrol_Exception *exception )
 114 {
 115     exception=mediacontrol_exception_init( exception );
 116
 117     RAISE_NULL( mediacontrol_InternalException, "unsupported method" );
 118 }
 119
 120 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 121                            char *psz_string, text_style_t *p_style,
 122                            int i_flags, int i_hmargin, int i_vmargin,
 123                            mtime_t i_start, mtime_t i_stop )
 124 {
 125     subpicture_t *p_spu;
 126     video_format_t fmt;
 127
 128     if( !psz_string ) return VLC_EGENERIC;
 129
 130     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 131     if( !p_spu ) return VLC_EGENERIC;
 132
 133     /* Create a new subpicture region */
 134     memset( &fmt, 0, sizeof(video_format_t) );
 135     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 136     fmt.i_aspect = 0;
 137     fmt.i_width = fmt.i_height = 0;
 138     fmt.i_x_offset = fmt.i_y_offset = 0;
 139     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 140     if( !p_spu->p_region )
 141     {
 142         msg_Err( p_vout, "cannot allocate SPU region" );
 143         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 144         return VLC_EGENERIC;
 145     }
 146
 147     p_spu->p_region->psz_text = strdup( psz_string );
 148     p_spu->i_start = i_start;
 149     p_spu->i_stop = i_stop;
 150     p_spu->b_ephemer = VLC_FALSE;
 151     p_spu->b_absolute = VLC_FALSE;
 152
 153     p_spu->i_x = i_hmargin;
 154     p_spu->i_y = i_vmargin;
 155     p_spu->i_flags = i_flags;
 156     p_spu->i_channel = i_channel;
 157
 158     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 159
 160     return VLC_SUCCESS;
 161 }
 162
 163
 164 void
 165 mediacontrol_display_text( mediacontrol_Instance *self,
 166                            const char * message,
 167                            const mediacontrol_Position * begin,
 168                            const mediacontrol_Position * end,
 169                            mediacontrol_Exception *exception )
 170 {
 171     input_thread_t *p_input = NULL;
 172     vout_thread_t *p_vout = NULL;
 173     char* psz_message;
 174
 175     psz_message = strdup( message );
 176     if( !psz_message )
 177     {
 178         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 179     }
 180
 181     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
 182     if( ! p_vout )
 183     {
 184         RAISE_VOID( mediacontrol_InternalException, "no video output" );
 185     }
 186
 187     if( begin->origin == mediacontrol_RelativePosition &&
 188         begin->value == 0 &&
 189         end->origin == mediacontrol_RelativePosition )
 190     {
 191         mtime_t i_duration = 0;
 192         mtime_t i_now = mdate();
 193
 194         i_duration = 1000 * mediacontrol_unit_convert(
 195                                                 self->p_playlist->p_input,
 196                                                 end->key,
 197                                                 mediacontrol_MediaTime,
 198                                                 end->value );
 199
 200         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 201                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 202                                i_now, i_now + i_duration );
 203     }
 204     else
 205     {
 206         mtime_t i_debut, i_fin, i_now;
 207
 208         p_input = self->p_playlist->p_input;
 209         if( ! p_input )
 210         {
 211             vlc_object_release( p_vout );
 212             RAISE_VOID( mediacontrol_InternalException, "No input" );
 213         }
 214
 215         /* FIXME */
 216         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 217         i_now = mdate();
 218
 219         i_debut = mediacontrol_position2microsecond( p_input,
 220                                             ( mediacontrol_Position* ) begin );
 221         i_debut += i_now;
 222
 223         i_fin = mediacontrol_position2microsecond( p_input,
 224                                           ( mediacontrol_Position * ) end );
 225         i_fin += i_now;
 226
 227         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 228                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 229                                i_debut, i_fin );
 230     }
 231
 232     vlc_object_release( p_vout );
 233 }
 234
 235 unsigned short
 236 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 237                                mediacontrol_Exception *exception )
 238 {
 239     libvlc_exception_t ex;
 240     int i_ret = 0;
 241
 242     mediacontrol_exception_init( exception );
 243     libvlc_exception_init( &ex );
 244
 245     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 246     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 247     /* FIXME: Normalize in [0..100] */
 248     return (unsigned short)i_ret;
 249 }
 250
 251 void
 252 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 253                                const unsigned short volume,
 254                                mediacontrol_Exception *exception )
 255 {
 256     /* FIXME: Normalize in [0..100] */
 257     libvlc_exception_t ex;
 258
 259     mediacontrol_exception_init( exception );
 260     libvlc_exception_init( &ex );
 261
 262     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 263     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 264 }
 265
 266 vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self,
 267                                     WINDOWHANDLE visual_id,
 268                                     mediacontrol_Exception *exception )
 269 {
 270     libvlc_exception_t ex;
 271
 272     mediacontrol_exception_init( exception );
 273     libvlc_exception_init( &ex );
 274
 275     libvlc_video_set_parent( self->p_instance, visual_id, &ex );
 276     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 277     return VLC_TRUE;
 278 }
 279
 280 int
 281 mediacontrol_get_rate( mediacontrol_Instance *self,
 282                        mediacontrol_Exception *exception )
 283 {
 284     libvlc_exception_t ex;
 285     libvlc_input_t* p_input;
 286     int i_ret;
 287
 288     mediacontrol_exception_init( exception );
 289     libvlc_exception_init( &ex );
 290
 291     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 292     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 293
 294     i_ret = libvlc_input_get_rate( p_input, &ex );
 295     libvlc_input_free( p_input );
 296     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 297
 298     return i_ret / 10;
 299 }
 300
 301 void
 302 mediacontrol_set_rate( mediacontrol_Instance *self,
 303                        const int rate,
 304                        mediacontrol_Exception *exception )
 305 {
 306     libvlc_exception_t ex;
 307     libvlc_input_t* p_input;
 308
 309     mediacontrol_exception_init( exception );
 310     libvlc_exception_init( &ex );
 311
 312     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 313     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 314
 315     libvlc_input_set_rate( p_input, rate * 10, &ex );
 316     libvlc_input_free( p_input );
 317     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 318 }
 319
 320 int
 321 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 322                              mediacontrol_Exception *exception )
 323 {
 324     libvlc_exception_t ex;
 325     libvlc_input_t* p_input;
 326     int i_ret;
 327
 328     mediacontrol_exception_init( exception );
 329     libvlc_exception_init( &ex );
 330
 331     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 332     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 333
 334     i_ret = libvlc_get_fullscreen( p_input, &ex );
 335     libvlc_input_free( p_input );
 336     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 337
 338     return i_ret;
 339 }
 340
 341 void
 342 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 343                              const int b_fullscreen,
 344                              mediacontrol_Exception *exception )
 345 {
 346     libvlc_exception_t ex;
 347     libvlc_input_t* p_input;
 348
 349     mediacontrol_exception_init( exception );
 350     libvlc_exception_init( &ex );
 351
 352     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 353     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 354
 355     libvlc_set_fullscreen( p_input, b_fullscreen, &ex );
 356     libvlc_input_free( p_input );
 357     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 358 }