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:%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     subpicture_t *p_spu;
 131     video_format_t fmt;
 132
 133     if( !psz_string ) return VLC_EGENERIC;
 134
 135     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 136     if( !p_spu ) return VLC_EGENERIC;
 137
 138     /* Create a new subpicture region */
 139     memset( &fmt, 0, sizeof(video_format_t) );
 140     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 141     fmt.i_aspect = 0;
 142     fmt.i_width = fmt.i_height = 0;
 143     fmt.i_x_offset = fmt.i_y_offset = 0;
 144     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 145     if( !p_spu->p_region )
 146     {
 147         msg_Err( p_vout, "cannot allocate SPU region" );
 148         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 149         return VLC_EGENERIC;
 150     }
 151
 152     p_spu->p_region->psz_text = strdup( psz_string );
 153     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
 154     p_spu->p_region->p_style = p_style;
 155     p_spu->i_start = i_start;
 156     p_spu->i_stop = i_stop;
 157     p_spu->b_ephemer = false;
 158     p_spu->b_absolute = false;
 159
 160     p_spu->i_x = i_hmargin;
 161     p_spu->i_y = i_vmargin;
 162     p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
 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     vout_thread_t *p_vout = NULL;
 179     char* psz_message;
 180     input_thread_t *p_input;
 181     libvlc_exception_t ex;
 182
 183     libvlc_exception_init( &ex );
 184     mediacontrol_exception_init( exception );
 185
 186     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 187     if( ! p_input )
 188     {
 189         RAISE_VOID( mediacontrol_InternalException, "No input" );
 190     }
 191     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
 192     if( ! p_vout )
 193     {
 194         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 195     }
 196
 197     psz_message = strdup( message );
 198     if( !psz_message )
 199     {
 200         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
 201     }
 202
 203     if( begin->origin == mediacontrol_RelativePosition &&
 204         begin->value == 0 &&
 205         end->origin == mediacontrol_RelativePosition )
 206     {
 207         mtime_t i_duration = 0;
 208         mtime_t i_now = mdate();
 209
 210         i_duration = 1000 * private_mediacontrol_unit_convert(
 211                                                               self->p_media_player,
 212                                                               end->key,
 213                                                               mediacontrol_MediaTime,
 214                                                               end->value );
 215
 216         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 217                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 218                                i_now, i_now + i_duration );
 219     }
 220     else
 221     {
 222         mtime_t i_debut, i_fin, i_now;
 223
 224         /* FIXME */
 225         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 226         i_now = mdate();
 227
 228         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 229                                             ( mediacontrol_Position* ) begin );
 230         i_debut += i_now;
 231
 232         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 233                                           ( mediacontrol_Position * ) end );
 234         i_fin += i_now;
 235
 236         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
 237                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 238                                i_debut, i_fin );
 239     }
 240
 241     vlc_object_release( p_vout );
 242 }
 243
 244 unsigned short
 245 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 246                                mediacontrol_Exception *exception )
 247 {
 248     libvlc_exception_t ex;
 249     int i_ret = 0;
 250
 251     mediacontrol_exception_init( exception );
 252     libvlc_exception_init( &ex );
 253
 254     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 255     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 256     /* FIXME: Normalize in [0..100] */
 257     return (unsigned short)i_ret;
 258 }
 259
 260 void
 261 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 262                                const unsigned short volume,
 263                                mediacontrol_Exception *exception )
 264 {
 265     /* FIXME: Normalize in [0..100] */
 266     libvlc_exception_t ex;
 267
 268     mediacontrol_exception_init( exception );
 269     libvlc_exception_init( &ex );
 270
 271     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 272     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 273 }
 274
 275 int mediacontrol_set_visual( mediacontrol_Instance *self,
 276                                     WINDOWHANDLE visual_id,
 277                                     mediacontrol_Exception *exception )
 278 {
 279     libvlc_exception_t ex;
 280
 281     mediacontrol_exception_init( exception );
 282     libvlc_exception_init( &ex );
 283
 284     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
 285     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 286     return true;
 287 }
 288
 289 int
 290 mediacontrol_get_rate( mediacontrol_Instance *self,
 291                mediacontrol_Exception *exception )
 292 {
 293     libvlc_exception_t ex;
 294     int i_ret;
 295
 296     mediacontrol_exception_init( exception );
 297     libvlc_exception_init( &ex );
 298
 299     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 300     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 301
 302     return i_ret / 10;
 303 }
 304
 305 void
 306 mediacontrol_set_rate( mediacontrol_Instance *self,
 307                const int rate,
 308                mediacontrol_Exception *exception )
 309 {
 310     libvlc_exception_t ex;
 311
 312     mediacontrol_exception_init( exception );
 313     libvlc_exception_init( &ex );
 314
 315     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
 316     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 317 }
 318
 319 int
 320 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 321                  mediacontrol_Exception *exception )
 322 {
 323     libvlc_exception_t ex;
 324     int i_ret;
 325
 326     mediacontrol_exception_init( exception );
 327     libvlc_exception_init( &ex );
 328
 329     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 330     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 331
 332     return i_ret;
 333 }
 334
 335 void
 336 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 337                  const int b_fullscreen,
 338                  mediacontrol_Exception *exception )
 339 {
 340     libvlc_exception_t ex;
 341
 342     mediacontrol_exception_init( exception );
 343     libvlc_exception_init( &ex );
 344
 345     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 346     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 347 }