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     (void)a_position;
  59     vlc_object_t* p_cache;
  60     vout_thread_t* p_vout;
  61     input_thread_t *p_input;
  62     mediacontrol_RGBPicture *p_pic = NULL;
  63     char path[256];
  64     snapshot_t *p_snapshot;
  65     libvlc_exception_t ex;
  66
  67     libvlc_exception_init( &ex );
  68     mediacontrol_exception_init( exception );
  69
  70     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
  71     if( ! p_input )
  72     {
  73         RAISE_NULL( mediacontrol_InternalException, "No input" );
  74     }
  75     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
  76     if( ! p_vout )
  77     {
  78         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  79     }
  80     p_cache = vlc_object_create( p_input, sizeof( vlc_object_t ) );
  81     if( p_cache == NULL )
  82     {
  83         vlc_object_release( p_vout );
  84         vlc_object_release( p_input );
  85         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
  86     }
  87     snprintf( path, 255, "object:%d", p_cache->i_object_id );
  88     var_SetString( p_vout, "snapshot-path", path );
  89     var_SetString( p_vout, "snapshot-format", "png" );
  90
  91     vlc_object_lock( p_cache );
  92     vout_Control( p_vout, VOUT_SNAPSHOT );
  93     vlc_object_wait( p_cache );
  94     vlc_object_release( p_vout );
  95
  96     p_snapshot = ( snapshot_t* ) p_cache->p_private;
  97     vlc_object_unlock( p_cache );
  98     vlc_object_release( p_cache );
  99     vlc_object_release( p_input );
 100
 101     if( p_snapshot )
 102     {
 103         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
 104                                p_snapshot->i_height,
 105                                VLC_FOURCC( 'p','n','g',' ' ),
 106                                p_snapshot->date,
 107                                p_snapshot->p_data,
 108                                p_snapshot->i_datasize );
 109         if( !p_pic )
 110         {
 111             free( p_snapshot->p_data );
 112             free( p_snapshot );
 113             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 114         }
 115     }
 116     else
 117     {
 118         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 119     }
 120     return p_pic;
 121 }
 122
 123 static
 124 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 125                            char *psz_string, text_style_t *p_style,
 126                            int i_flags, int i_hmargin, int i_vmargin,
 127                            mtime_t i_start, mtime_t i_stop )
 128 {
 129     subpicture_t *p_spu;
 130     video_format_t fmt;
 131
 132     if( !psz_string ) return VLC_EGENERIC;
 133
 134     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 135     if( !p_spu ) return VLC_EGENERIC;
 136
 137     /* Create a new subpicture region */
 138     memset( &fmt, 0, sizeof(video_format_t) );
 139     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 140     fmt.i_aspect = 0;
 141     fmt.i_width = fmt.i_height = 0;
 142     fmt.i_x_offset = fmt.i_y_offset = 0;
 143     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 144     if( !p_spu->p_region )
 145     {
 146         msg_Err( p_vout, "cannot allocate SPU region" );
 147         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 148         return VLC_EGENERIC;
 149     }
 150
 151     p_spu->p_region->psz_text = strdup( psz_string );
 152     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
 153     p_spu->p_region->p_style = p_style;
 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     vout_thread_t *p_vout = NULL;
 178     char* psz_message;
 179     input_thread_t *p_input;
 180     libvlc_exception_t ex;
 181
 182     libvlc_exception_init( &ex );
 183     mediacontrol_exception_init( exception );
 184
 185     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 186     if( ! p_input )
 187     {
 188         RAISE_VOID( mediacontrol_InternalException, "No input" );
 189     }
 190     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
 191     if( ! p_vout )
 192     {
 193         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 194     }
 195
 196     psz_message = strdup( message );
 197     if( !psz_message )
 198     {
 199         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 200     }
 201
 202     if( begin->origin == mediacontrol_RelativePosition &&
 203         begin->value == 0 &&
 204         end->origin == mediacontrol_RelativePosition )
 205     {
 206         mtime_t i_duration = 0;
 207         mtime_t i_now = mdate();
 208
 209         i_duration = 1000 * private_mediacontrol_unit_convert(
 210                                                               self->p_media_player,
 211                                                               end->key,
 212                                                               mediacontrol_MediaTime,
 213                                                               end->value );
 214
 215         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 216                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 217                                i_now, i_now + i_duration );
 218     }
 219     else
 220     {
 221         mtime_t i_debut, i_fin, i_now;
 222
 223         /* FIXME */
 224         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 225         i_now = mdate();
 226
 227         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 228                                             ( mediacontrol_Position* ) begin );
 229         i_debut += i_now;
 230
 231         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 232                                           ( mediacontrol_Position * ) end );
 233         i_fin += i_now;
 234
 235         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 236                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 237                                i_debut, i_fin );
 238     }
 239
 240     vlc_object_release( p_vout );
 241 }
 242
 243 unsigned short
 244 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 245                                mediacontrol_Exception *exception )
 246 {
 247     libvlc_exception_t ex;
 248     int i_ret = 0;
 249
 250     mediacontrol_exception_init( exception );
 251     libvlc_exception_init( &ex );
 252
 253     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 254     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 255     /* FIXME: Normalize in [0..100] */
 256     return (unsigned short)i_ret;
 257 }
 258
 259 void
 260 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 261                                const unsigned short volume,
 262                                mediacontrol_Exception *exception )
 263 {
 264     /* FIXME: Normalize in [0..100] */
 265     libvlc_exception_t ex;
 266
 267     mediacontrol_exception_init( exception );
 268     libvlc_exception_init( &ex );
 269
 270     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 271     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 272 }
 273
 274 int mediacontrol_set_visual( mediacontrol_Instance *self,
 275                                     WINDOWHANDLE visual_id,
 276                                     mediacontrol_Exception *exception )
 277 {
 278     libvlc_exception_t ex;
 279
 280     mediacontrol_exception_init( exception );
 281     libvlc_exception_init( &ex );
 282
 283     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
 284     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 285     return true;
 286 }
 287
 288 int
 289 mediacontrol_get_rate( mediacontrol_Instance *self,
 290                mediacontrol_Exception *exception )
 291 {
 292     libvlc_exception_t ex;
 293     int i_ret;
 294
 295     mediacontrol_exception_init( exception );
 296     libvlc_exception_init( &ex );
 297
 298     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 299     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 300
 301     return i_ret / 10;
 302 }
 303
 304 void
 305 mediacontrol_set_rate( mediacontrol_Instance *self,
 306                const int rate,
 307                mediacontrol_Exception *exception )
 308 {
 309     libvlc_exception_t ex;
 310
 311     mediacontrol_exception_init( exception );
 312     libvlc_exception_init( &ex );
 313
 314     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
 315     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 316 }
 317
 318 int
 319 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 320                  mediacontrol_Exception *exception )
 321 {
 322     libvlc_exception_t ex;
 323     int i_ret;
 324
 325     mediacontrol_exception_init( exception );
 326     libvlc_exception_init( &ex );
 327
 328     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 329     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 330
 331     return i_ret;
 332 }
 333
 334 void
 335 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 336                  const int b_fullscreen,
 337                  mediacontrol_Exception *exception )
 338 {
 339     libvlc_exception_t ex;
 340
 341     mediacontrol_exception_init( exception );
 342     libvlc_exception_init( &ex );
 343
 344     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 345     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 346 }