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 static
 121 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 122                            char *psz_string, text_style_t *p_style,
 123                            int i_flags, int i_hmargin, int i_vmargin,
 124                            mtime_t i_start, mtime_t i_stop )
 125 {
 126     subpicture_t *p_spu;
 127     video_format_t fmt;
 128
 129     if( !psz_string ) return VLC_EGENERIC;
 130
 131     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 132     if( !p_spu ) return VLC_EGENERIC;
 133
 134     /* Create a new subpicture region */
 135     memset( &fmt, 0, sizeof(video_format_t) );
 136     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 137     fmt.i_aspect = 0;
 138     fmt.i_width = fmt.i_height = 0;
 139     fmt.i_x_offset = fmt.i_y_offset = 0;
 140     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 141     if( !p_spu->p_region )
 142     {
 143         msg_Err( p_vout, "cannot allocate SPU region" );
 144         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 145         return VLC_EGENERIC;
 146     }
 147
 148     p_spu->p_region->psz_text = strdup( psz_string );
 149     p_spu->i_start = i_start;
 150     p_spu->i_stop = i_stop;
 151     p_spu->b_ephemer = VLC_FALSE;
 152     p_spu->b_absolute = VLC_FALSE;
 153
 154     p_spu->i_x = i_hmargin;
 155     p_spu->i_y = i_vmargin;
 156     p_spu->i_flags = i_flags;
 157     p_spu->i_channel = i_channel;
 158
 159     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 160
 161     return VLC_SUCCESS;
 162 }
 163
 164
 165 void
 166 mediacontrol_display_text( mediacontrol_Instance *self,
 167                            const char * message,
 168                            const mediacontrol_Position * begin,
 169                            const mediacontrol_Position * end,
 170                            mediacontrol_Exception *exception )
 171 {
 172     input_thread_t *p_input = NULL;
 173     vout_thread_t *p_vout = NULL;
 174     char* psz_message;
 175
 176     psz_message = strdup( message );
 177     if( !psz_message )
 178     {
 179         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 180     }
 181
 182     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
 183     if( ! p_vout )
 184     {
 185         RAISE_VOID( mediacontrol_InternalException, "no video output" );
 186     }
 187
 188     if( begin->origin == mediacontrol_RelativePosition &&
 189         begin->value == 0 &&
 190         end->origin == mediacontrol_RelativePosition )
 191     {
 192         mtime_t i_duration = 0;
 193         mtime_t i_now = mdate();
 194
 195         i_duration = 1000 * mediacontrol_unit_convert(
 196                                                 self->p_playlist->p_input,
 197                                                 end->key,
 198                                                 mediacontrol_MediaTime,
 199                                                 end->value );
 200
 201         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 202                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 203                                i_now, i_now + i_duration );
 204     }
 205     else
 206     {
 207         mtime_t i_debut, i_fin, i_now;
 208
 209         p_input = self->p_playlist->p_input;
 210         if( ! p_input )
 211         {
 212             vlc_object_release( p_vout );
 213             RAISE_VOID( mediacontrol_InternalException, "No input" );
 214         }
 215
 216         /* FIXME */
 217         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 218         i_now = mdate();
 219
 220         i_debut = mediacontrol_position2microsecond( p_input,
 221                                             ( mediacontrol_Position* ) begin );
 222         i_debut += i_now;
 223
 224         i_fin = mediacontrol_position2microsecond( p_input,
 225                                           ( mediacontrol_Position * ) end );
 226         i_fin += i_now;
 227
 228         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 229                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 230                                i_debut, i_fin );
 231     }
 232
 233     vlc_object_release( p_vout );
 234 }
 235
 236 unsigned short
 237 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 238                                mediacontrol_Exception *exception )
 239 {
 240     libvlc_exception_t ex;
 241     int i_ret = 0;
 242
 243     mediacontrol_exception_init( exception );
 244     libvlc_exception_init( &ex );
 245
 246     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 247     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 248     /* FIXME: Normalize in [0..100] */
 249     return (unsigned short)i_ret;
 250 }
 251
 252 void
 253 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 254                                const unsigned short volume,
 255                                mediacontrol_Exception *exception )
 256 {
 257     /* FIXME: Normalize in [0..100] */
 258     libvlc_exception_t ex;
 259
 260     mediacontrol_exception_init( exception );
 261     libvlc_exception_init( &ex );
 262
 263     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 264     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 265 }
 266
 267 vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self,
 268                                     WINDOWHANDLE visual_id,
 269                                     mediacontrol_Exception *exception )
 270 {
 271     libvlc_exception_t ex;
 272
 273     mediacontrol_exception_init( exception );
 274     libvlc_exception_init( &ex );
 275
 276     libvlc_video_set_parent( self->p_instance, visual_id, &ex );
 277     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 278     return VLC_TRUE;
 279 }
 280
 281 int
 282 mediacontrol_get_rate( mediacontrol_Instance *self,
 283                        mediacontrol_Exception *exception )
 284 {
 285     libvlc_exception_t ex;
 286     libvlc_input_t* p_input;
 287     int i_ret;
 288
 289     mediacontrol_exception_init( exception );
 290     libvlc_exception_init( &ex );
 291
 292     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 293     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 294
 295     i_ret = libvlc_input_get_rate( p_input, &ex );
 296     libvlc_input_free( p_input );
 297     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 298
 299     return i_ret / 10;
 300 }
 301
 302 void
 303 mediacontrol_set_rate( mediacontrol_Instance *self,
 304                        const int rate,
 305                        mediacontrol_Exception *exception )
 306 {
 307     libvlc_exception_t ex;
 308     libvlc_input_t* p_input;
 309
 310     mediacontrol_exception_init( exception );
 311     libvlc_exception_init( &ex );
 312
 313     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 314     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 315
 316     libvlc_input_set_rate( p_input, rate * 10, &ex );
 317     libvlc_input_free( p_input );
 318     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 319 }
 320
 321 int
 322 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 323                              mediacontrol_Exception *exception )
 324 {
 325     libvlc_exception_t ex;
 326     libvlc_input_t* p_input;
 327     int i_ret;
 328
 329     mediacontrol_exception_init( exception );
 330     libvlc_exception_init( &ex );
 331
 332     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 333     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 334
 335     i_ret = libvlc_get_fullscreen( p_input, &ex );
 336     libvlc_input_free( p_input );
 337     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 338
 339     return i_ret;
 340 }
 341
 342 void
 343 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 344                              const int b_fullscreen,
 345                              mediacontrol_Exception *exception )
 346 {
 347     libvlc_exception_t ex;
 348     libvlc_input_t* p_input;
 349
 350     mediacontrol_exception_init( exception );
 351     libvlc_exception_init( &ex );
 352
 353     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 354     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 355
 356     libvlc_set_fullscreen( p_input, b_fullscreen, &ex );
 357     libvlc_input_free( p_input );
 358     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 359 }