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     vlc_object_t* p_cache;
  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     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
  70     if( ! p_input )
  71     {
  72         RAISE_NULL( mediacontrol_InternalException, "No input" );
  73     }
  74     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
  75     if( ! p_vout )
  76     {
  77         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  78     }
  79     p_cache = vlc_object_create( p_input, VLC_OBJECT_GENERIC );
  80     if( p_cache == NULL )
  81     {
  82         vlc_object_release( p_vout );
  83         vlc_object_release( p_input );
  84         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  85     }
  86     snprintf( path, 255, "object:%d", p_cache->i_object_id );
  87     var_SetString( p_vout, "snapshot-path", path );
  88     var_SetString( p_vout, "snapshot-format", "png" );
  89
  90     vlc_object_lock( p_cache );
  91     vout_Control( p_vout, VOUT_SNAPSHOT );
  92     vlc_object_wait( p_cache );
  93     vlc_object_release( p_vout );
  94
  95     p_snapshot = ( snapshot_t* ) p_cache->p_private;
  96     vlc_object_unlock( p_cache );
  97     vlc_object_release( p_cache );
  98     vlc_object_release( p_input );
  99
 100     if( p_snapshot )
 101     {
 102         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
 103                                p_snapshot->i_height,
 104                                VLC_FOURCC( 'p','n','g',' ' ),
 105                                p_snapshot->date,
 106                                p_snapshot->p_data,
 107                                p_snapshot->i_datasize );
 108         if( !p_pic )
 109         {
 110             free( p_snapshot->p_data );
 111             free( p_snapshot );
 112             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 113         }
 114     }
 115     else
 116     {
 117         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 118     }
 119     return p_pic;
 120 }
 121
 122 static
 123 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 124                            char *psz_string, text_style_t *p_style,
 125                            int i_flags, int i_hmargin, int i_vmargin,
 126                            mtime_t i_start, mtime_t i_stop )
 127 {
 128     subpicture_t *p_spu;
 129     video_format_t fmt;
 130
 131     if( !psz_string ) return VLC_EGENERIC;
 132
 133     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 134     if( !p_spu ) return VLC_EGENERIC;
 135
 136     /* Create a new subpicture region */
 137     memset( &fmt, 0, sizeof(video_format_t) );
 138     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 139     fmt.i_aspect = 0;
 140     fmt.i_width = fmt.i_height = 0;
 141     fmt.i_x_offset = fmt.i_y_offset = 0;
 142     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 143     if( !p_spu->p_region )
 144     {
 145         msg_Err( p_vout, "cannot allocate SPU region" );
 146         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 147         return VLC_EGENERIC;
 148     }
 149
 150     p_spu->p_region->psz_text = strdup( psz_string );
 151     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
 152     p_spu->i_start = i_start;
 153     p_spu->i_stop = i_stop;
 154     p_spu->b_ephemer = false;
 155     p_spu->b_absolute = false;
 156
 157     p_spu->i_x = i_hmargin;
 158     p_spu->i_y = i_vmargin;
 159     p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
 160     p_spu->i_channel = i_channel;
 161
 162     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 163
 164     return VLC_SUCCESS;
 165 }
 166
 167
 168 void
 169 mediacontrol_display_text( mediacontrol_Instance *self,
 170                            const char * message,
 171                            const mediacontrol_Position * begin,
 172                            const mediacontrol_Position * end,
 173                            mediacontrol_Exception *exception )
 174 {
 175     vout_thread_t *p_vout = NULL;
 176     char* psz_message;
 177     input_thread_t *p_input;
 178     libvlc_exception_t ex;
 179
 180     libvlc_exception_init( &ex );
 181     mediacontrol_exception_init( exception );
 182
 183     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 184     if( ! p_input )
 185     {
 186         RAISE_VOID( mediacontrol_InternalException, "No input" );
 187     }
 188     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
 189     if( ! p_vout )
 190     {
 191         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 192     }
 193
 194     psz_message = strdup( message );
 195     if( !psz_message )
 196     {
 197         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 198     }
 199
 200     if( begin->origin == mediacontrol_RelativePosition &&
 201         begin->value == 0 &&
 202         end->origin == mediacontrol_RelativePosition )
 203     {
 204         mtime_t i_duration = 0;
 205         mtime_t i_now = mdate();
 206
 207         i_duration = 1000 * private_mediacontrol_unit_convert(
 208                                                               self->p_media_player,
 209                                                               end->key,
 210                                                               mediacontrol_MediaTime,
 211                                                               end->value );
 212
 213         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 214                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 215                                i_now, i_now + i_duration );
 216     }
 217     else
 218     {
 219         mtime_t i_debut, i_fin, i_now;
 220
 221         /* FIXME */
 222         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 223         i_now = mdate();
 224
 225         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 226                                             ( mediacontrol_Position* ) begin );
 227         i_debut += i_now;
 228
 229         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 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_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)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     int i_ret;
 292
 293     mediacontrol_exception_init( exception );
 294     libvlc_exception_init( &ex );
 295
 296     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 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
 309     mediacontrol_exception_init( exception );
 310     libvlc_exception_init( &ex );
 311
 312     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
 313     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 314 }
 315
 316 int
 317 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 318                  mediacontrol_Exception *exception )
 319 {
 320     libvlc_exception_t ex;
 321     int i_ret;
 322
 323     mediacontrol_exception_init( exception );
 324     libvlc_exception_init( &ex );
 325
 326     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 327     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 328
 329     return i_ret;
 330 }
 331
 332 void
 333 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 334                  const int b_fullscreen,
 335                  mediacontrol_Exception *exception )
 336 {
 337     libvlc_exception_t ex;
 338
 339     mediacontrol_exception_init( exception );
 340     libvlc_exception_init( &ex );
 341
 342     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 343     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 344 }