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/intf.h>
  30 #include <vlc/vout.h>
  31 #include <vlc/aout.h>
  32 #include <vlc_demux.h>
  33
  34 #include <vlc_osd.h>
  35
  36 #include <snapshot.h>
  37
  38 #include <stdlib.h>                                      /* malloc(), free() */
  39 #include <string.h>
  40
  41 #include <errno.h>                                                 /* ENOMEM */
  42 #include <stdio.h>
  43 #include <ctype.h>
  44
  45 #ifdef HAVE_UNISTD_H
  46 #    include <unistd.h>
  47 #endif
  48 #ifdef HAVE_SYS_TIME_H
  49 #    include <sys/time.h>
  50 #endif
  51 #ifdef HAVE_SYS_TYPES_H
  52 #    include <sys/types.h>
  53 #endif
  54
  55 #define RAISE( c, m )  exception->code = c; \
  56                        exception->message = strdup(m);
  57
  58 mediacontrol_RGBPicture *
  59 mediacontrol_snapshot( mediacontrol_Instance *self,
  60                        const mediacontrol_Position * a_position,
  61                        mediacontrol_Exception *exception )
  62 {
  63     vlc_object_t* p_cache;
  64     vout_thread_t* p_vout;
  65     mediacontrol_RGBPicture *p_pic = NULL;
  66     char path[256];
  67     snapshot_t *p_snapshot;
  68
  69     exception=mediacontrol_exception_init( exception );
  70
  71     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
  72     if( ! p_vout )
  73     {
  74         RAISE( mediacontrol_InternalException, "No video output" );
  75         return NULL;
  76     }
  77     p_cache = vlc_object_create( self->p_playlist, VLC_OBJECT_GENERIC );
  78     if( p_cache == NULL )
  79     {
  80         vlc_object_release( p_vout );
  81         msg_Err( self->p_playlist, "out of memory" );
  82         RAISE( mediacontrol_InternalException, "Out of memory" );
  83         return NULL;
  84     }
  85     snprintf( path, 255, "object:%d", p_cache->i_object_id );
  86     var_SetString( p_vout, "snapshot-path", path );
  87     var_SetString( p_vout, "snapshot-format", "png" );
  88
  89     vlc_mutex_lock( &p_cache->object_lock );
  90     vout_Control( p_vout, VOUT_SNAPSHOT );
  91     vlc_cond_wait( &p_cache->object_wait, &p_cache->object_lock );
  92     vlc_object_release( p_vout );
  93
  94     p_snapshot = ( snapshot_t* ) p_cache->p_private;
  95     vlc_object_destroy( p_cache );
  96
  97     if( p_snapshot )
  98     {
  99         p_pic = _mediacontrol_createRGBPicture( p_snapshot->i_width,
 100                                                 p_snapshot->i_height,
 101                                                 VLC_FOURCC( 'p','n','g',' ' ),
 102                                                 p_snapshot->date,
 103                                                 p_snapshot->p_data,
 104                                                 p_snapshot->i_datasize );
 105         if( !p_pic )
 106             RAISE( mediacontrol_InternalException, "out of memory" );
 107         free( p_snapshot->p_data );
 108         free( p_snapshot );
 109     }
 110     else
 111     {
 112         RAISE( mediacontrol_InternalException, "Snapshot exception" );
 113     }
 114     return p_pic;
 115 }
 116
 117 mediacontrol_RGBPicture **
 118 mediacontrol_all_snapshots( mediacontrol_Instance *self,
 119                             mediacontrol_Exception *exception )
 120 {
 121     exception=mediacontrol_exception_init( exception );
 122
 123     RAISE( mediacontrol_InternalException, "unsupported method" );
 124     return NULL;
 125 }
 126
 127 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 128                            char *psz_string, text_style_t *p_style,
 129                            int i_flags, int i_hmargin, int i_vmargin,
 130                            mtime_t i_start, mtime_t i_stop )
 131 {
 132     subpicture_t *p_spu;
 133     video_format_t fmt;
 134
 135     if( !psz_string ) return VLC_EGENERIC;
 136
 137     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 138     if( !p_spu ) return VLC_EGENERIC;
 139
 140     /* Create a new subpicture region */
 141     memset( &fmt, 0, sizeof(video_format_t) );
 142     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 143     fmt.i_aspect = 0;
 144     fmt.i_width = fmt.i_height = 0;
 145     fmt.i_x_offset = fmt.i_y_offset = 0;
 146     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 147     if( !p_spu->p_region )
 148     {
 149         msg_Err( p_vout, "cannot allocate SPU region" );
 150         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 151         return VLC_EGENERIC;
 152     }
 153
 154     p_spu->p_region->psz_text = strdup( psz_string );
 155     p_spu->i_start = i_start;
 156     p_spu->i_stop = i_stop;
 157     p_spu->b_ephemer = VLC_FALSE;
 158     p_spu->b_absolute = VLC_FALSE;
 159
 160     p_spu->i_x = i_hmargin;
 161     p_spu->i_y = i_vmargin;
 162     p_spu->i_flags = i_flags;
 163     p_spu->i_channel = i_channel;
 164
 165     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
 166
 167     return VLC_SUCCESS;
 168 }
 169
 170
 171 void
 172 mediacontrol_display_text( mediacontrol_Instance *self,
 173                            const char * message,
 174                            const mediacontrol_Position * begin,
 175                            const mediacontrol_Position * end,
 176                            mediacontrol_Exception *exception )
 177 {
 178     input_thread_t *p_input = NULL;
 179     vout_thread_t *p_vout = NULL;
 180     char* psz_message;
 181
 182     psz_message = strdup( message );
 183     if( !psz_message )
 184     {
 185         RAISE( mediacontrol_InternalException, "no more memory" );
 186         return;
 187     }
 188
 189     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
 190     if( ! p_vout )
 191     {
 192         RAISE( mediacontrol_InternalException, "no video output" );
 193         return;
 194     }
 195
 196     if( begin->origin == mediacontrol_RelativePosition &&
 197         begin->value == 0 &&
 198         end->origin == mediacontrol_RelativePosition )
 199     {
 200         mtime_t i_duration = 0;
 201         mtime_t i_now = mdate();
 202
 203         i_duration = 1000 * mediacontrol_unit_convert(
 204                                                 self->p_playlist->p_input,
 205                                                 end->key,
 206                                                 mediacontrol_MediaTime,
 207                                                 end->value );
 208
 209         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 210                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 211                                i_now, i_now + i_duration );
 212     }
 213     else
 214     {
 215         mtime_t i_debut, i_fin, i_now;
 216
 217         p_input = self->p_playlist->p_input;
 218         if( ! p_input )
 219         {
 220             RAISE( mediacontrol_InternalException, "No input" );
 221             vlc_object_release( p_vout );
 222             return;
 223         }
 224
 225         /* FIXME */
 226         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 227         i_now = mdate();
 228
 229         i_debut = mediacontrol_position2microsecond( p_input,
 230                                             ( mediacontrol_Position* ) begin );
 231         i_debut += i_now;
 232
 233         i_fin = mediacontrol_position2microsecond( p_input,
 234                                           ( mediacontrol_Position * ) end );
 235         i_fin += i_now;
 236
 237         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 238                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 239                                i_debut, i_fin );
 240     }
 241
 242     vlc_object_release( p_vout );
 243 }
 244
 245 unsigned short
 246 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 247                                mediacontrol_Exception *exception )
 248 {
 249     libvlc_exception_t ex;
 250     int i_ret = 0;
 251
 252     mediacontrol_exception_init( exception );
 253     libvlc_exception_init( &ex );
 254
 255     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 256     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 257     /* FIXME: Normalize in [0..100] */
 258     return (unsigned short)i_ret;
 259 }
 260
 261 void
 262 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 263                                const unsigned short volume,
 264                                mediacontrol_Exception *exception )
 265 {
 266     /* FIXME: Normalize in [0..100] */
 267     libvlc_exception_t ex;
 268
 269     mediacontrol_exception_init( exception );
 270     libvlc_exception_init( &ex );
 271
 272     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 273     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 274 }
 275
 276 vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self,
 277                                     WINDOWHANDLE visual_id,
 278                                     mediacontrol_Exception *exception )
 279 {
 280     libvlc_exception_t ex;
 281
 282     mediacontrol_exception_init( exception );
 283     libvlc_exception_init( &ex );
 284
 285     libvlc_video_set_parent( self->p_instance, visual_id, &ex );
 286     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 287     return VLC_TRUE;
 288 }
 289
 290 int
 291 mediacontrol_get_rate( mediacontrol_Instance *self,
 292                        mediacontrol_Exception *exception )
 293 {
 294     libvlc_exception_t ex;
 295     libvlc_input_t* p_input;
 296     int i_ret;
 297
 298     mediacontrol_exception_init( exception );
 299     libvlc_exception_init( &ex );
 300
 301     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 302     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 303
 304     i_ret = libvlc_input_get_rate( p_input, &ex );
 305     libvlc_input_free( p_input );
 306     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 307
 308     return i_ret / 10;
 309 }
 310
 311 void
 312 mediacontrol_set_rate( mediacontrol_Instance *self,
 313                        const int rate,
 314                        mediacontrol_Exception *exception )
 315 {
 316     libvlc_exception_t ex;
 317     libvlc_input_t* p_input;
 318
 319     mediacontrol_exception_init( exception );
 320     libvlc_exception_init( &ex );
 321
 322     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 323     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 324
 325     libvlc_input_set_rate( p_input, rate * 10, &ex );
 326     libvlc_input_free( p_input );
 327     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 328 }
 329
 330 int
 331 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 332                              mediacontrol_Exception *exception )
 333 {
 334     libvlc_exception_t ex;
 335     libvlc_input_t* p_input;
 336     int i_ret;
 337
 338     mediacontrol_exception_init( exception );
 339     libvlc_exception_init( &ex );
 340
 341     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 342     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 343
 344     i_ret = libvlc_get_fullscreen( p_input, &ex );
 345     libvlc_input_free( p_input );
 346     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 347
 348     return i_ret;
 349 }
 350
 351 void
 352 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 353                              const int b_fullscreen,
 354                              mediacontrol_Exception *exception )
 355 {
 356     libvlc_exception_t ex;
 357     libvlc_input_t* p_input;
 358
 359     mediacontrol_exception_init( exception );
 360     libvlc_exception_init( &ex );
 361
 362     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
 363     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 364
 365     libvlc_set_fullscreen( p_input, b_fullscreen, &ex );
 366     libvlc_input_free( p_input );
 367     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 368 }