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:%ju", (uintmax_t)(uintptr_t)p_cache );
  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         /* Note: p_snapshot->p_data is directly used, not copied. Thus
 104            do not free it here. */
 105         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
 106                                                        p_snapshot->i_height,
 107                                                        VLC_FOURCC( 'p','n','g',' ' ),
 108                                                        p_snapshot->date,
 109                                                        p_snapshot->p_data,
 110                                                        p_snapshot->i_datasize );
 111         if( !p_pic )
 112         {
 113             free( p_snapshot );
 114             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 115         }
 116     }
 117     else
 118     {
 119         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
 120     }
 121     return p_pic;
 122 }
 123
 124 static
 125 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 126                            char *psz_string, text_style_t *p_style,
 127                            int i_flags, int i_hmargin, int i_vmargin,
 128                            mtime_t i_start, mtime_t i_stop )
 129 {
 130     return osd_ShowTextAbsolute( p_vout->p_spu, i_channel,
 131                                  psz_string, p_style,
 132                                  i_flags, i_hmargin, i_vmargin,
 133                                  i_start, i_stop );
 134 }
 135
 136
 137 void
 138 mediacontrol_display_text( mediacontrol_Instance *self,
 139                            const char * message,
 140                            const mediacontrol_Position * begin,
 141                            const mediacontrol_Position * end,
 142                            mediacontrol_Exception *exception )
 143 {
 144     vout_thread_t *p_vout = NULL;
 145     char* psz_message;
 146     input_thread_t *p_input;
 147     libvlc_exception_t ex;
 148
 149     libvlc_exception_init( &ex );
 150     mediacontrol_exception_init( exception );
 151
 152     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 153     if( ! p_input )
 154     {
 155         RAISE_VOID( mediacontrol_InternalException, "No input" );
 156     }
 157     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
 158     if( ! p_vout )
 159     {
 160         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 161     }
 162
 163     psz_message = strdup( message );
 164     if( !psz_message )
 165     {
 166         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 167     }
 168
 169     if( begin->origin == mediacontrol_RelativePosition &&
 170         begin->value == 0 &&
 171         end->origin == mediacontrol_RelativePosition )
 172     {
 173         mtime_t i_duration = 0;
 174         mtime_t i_now = mdate();
 175
 176         i_duration = 1000 * private_mediacontrol_unit_convert(
 177                                                               self->p_media_player,
 178                                                               end->key,
 179                                                               mediacontrol_MediaTime,
 180                                                               end->value );
 181
 182         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 183                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 184                                i_now, i_now + i_duration );
 185     }
 186     else
 187     {
 188         mtime_t i_debut, i_fin, i_now;
 189
 190         /* FIXME */
 191         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 192         i_now = mdate();
 193
 194         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 195                                             ( mediacontrol_Position* ) begin );
 196         i_debut += i_now;
 197
 198         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 199                                           ( mediacontrol_Position * ) end );
 200         i_fin += i_now;
 201
 202         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 203                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 204                                i_debut, i_fin );
 205     }
 206
 207     vlc_object_release( p_vout );
 208 }
 209
 210 unsigned short
 211 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 212                                mediacontrol_Exception *exception )
 213 {
 214     libvlc_exception_t ex;
 215     int i_ret = 0;
 216
 217     mediacontrol_exception_init( exception );
 218     libvlc_exception_init( &ex );
 219
 220     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 221     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 222     /* FIXME: Normalize in [0..100] */
 223     return (unsigned short)i_ret;
 224 }
 225
 226 void
 227 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 228                                const unsigned short volume,
 229                                mediacontrol_Exception *exception )
 230 {
 231     /* FIXME: Normalize in [0..100] */
 232     libvlc_exception_t ex;
 233
 234     mediacontrol_exception_init( exception );
 235     libvlc_exception_init( &ex );
 236
 237     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 238     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 239 }
 240
 241 int mediacontrol_set_visual( mediacontrol_Instance *self,
 242                                     WINDOWHANDLE visual_id,
 243                                     mediacontrol_Exception *exception )
 244 {
 245     libvlc_exception_t ex;
 246
 247     mediacontrol_exception_init( exception );
 248     libvlc_exception_init( &ex );
 249
 250     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
 251     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 252     return true;
 253 }
 254
 255 int
 256 mediacontrol_get_rate( mediacontrol_Instance *self,
 257                mediacontrol_Exception *exception )
 258 {
 259     libvlc_exception_t ex;
 260     int i_ret;
 261
 262     mediacontrol_exception_init( exception );
 263     libvlc_exception_init( &ex );
 264
 265     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 266     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 267
 268     return i_ret / 10;
 269 }
 270
 271 void
 272 mediacontrol_set_rate( mediacontrol_Instance *self,
 273                const int rate,
 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_rate( self->p_media_player, rate * 10, &ex );
 282     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 283 }
 284
 285 int
 286 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 287                  mediacontrol_Exception *exception )
 288 {
 289     libvlc_exception_t ex;
 290     int i_ret;
 291
 292     mediacontrol_exception_init( exception );
 293     libvlc_exception_init( &ex );
 294
 295     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 296     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 297
 298     return i_ret;
 299 }
 300
 301 void
 302 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 303                  const int b_fullscreen,
 304                  mediacontrol_Exception *exception )
 305 {
 306     libvlc_exception_t ex;
 307
 308     mediacontrol_exception_init( exception );
 309     libvlc_exception_init( &ex );
 310
 311     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 312     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 313 }