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
  28 #include <vlc/intf.h>
  29 #include <vlc/vout.h>
  30 #include <vlc/aout.h>
  31 #include <vlc_demux.h>
  32
  33 #include <vlc_osd.h>
  34
  35 #include <snapshot.h>
  36
  37 #include <stdlib.h>                                      /* malloc(), free() */
  38 #include <string.h>
  39
  40 #include <errno.h>                                                 /* ENOMEM */
  41 #include <stdio.h>
  42 #include <ctype.h>
  43
  44 #ifdef HAVE_UNISTD_H
  45 #    include <unistd.h>
  46 #endif
  47 #ifdef HAVE_SYS_TIME_H
  48 #    include <sys/time.h>
  49 #endif
  50 #ifdef HAVE_SYS_TYPES_H
  51 #    include <sys/types.h>
  52 #endif
  53
  54 #define RAISE( c, m )  exception->code = c; \
  55                        exception->message = strdup(m);
  56
  57 mediacontrol_RGBPicture *
  58 mediacontrol_snapshot( mediacontrol_Instance *self,
  59                        const mediacontrol_Position * a_position,
  60                        mediacontrol_Exception *exception )
  61 {
  62     vlc_object_t* p_cache;
  63     vout_thread_t* p_vout;
  64     mediacontrol_RGBPicture *p_pic = NULL;
  65     char path[256];
  66     snapshot_t *p_snapshot;
  67
  68     exception=mediacontrol_exception_init( exception );
  69
  70     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
  71     if( ! p_vout )
  72     {
  73         RAISE( mediacontrol_InternalException, "No video output" );
  74         return NULL;
  75     }
  76     p_cache = vlc_object_create( self->p_playlist, VLC_OBJECT_GENERIC );
  77     if( p_cache == NULL )
  78     {
  79         vlc_object_release( p_vout );
  80         msg_Err( self->p_playlist, "out of memory" );
  81         RAISE( mediacontrol_InternalException, "Out of memory" );
  82         return NULL;
  83     }
  84     snprintf( path, 255, "object:%d", p_cache->i_object_id );
  85     var_SetString( p_vout, "snapshot-path", path );
  86     var_SetString( p_vout, "snapshot-format", "png" );
  87
  88     vlc_mutex_lock( &p_cache->object_lock );
  89     vout_Control( p_vout, VOUT_SNAPSHOT );
  90     vlc_cond_wait( &p_cache->object_wait, &p_cache->object_lock );
  91     vlc_object_release( p_vout );
  92
  93     p_snapshot = ( snapshot_t* ) p_cache->p_private;
  94     vlc_object_destroy( p_cache );
  95
  96     if( p_snapshot )
  97     {
  98         p_pic = _mediacontrol_createRGBPicture( p_snapshot->i_width,
  99                                                 p_snapshot->i_height,
 100                                                 VLC_FOURCC( 'p','n','g',' ' ),
 101                                                 p_snapshot->date,
 102                                                 p_snapshot->p_data,
 103                                                 p_snapshot->i_datasize );
 104         if( !p_pic )
 105             RAISE( mediacontrol_InternalException, "Out of memory" );
 106         free( p_snapshot->p_data );
 107         free( p_snapshot );
 108     }
 109     else
 110     {
 111         RAISE( mediacontrol_InternalException, "Snapshot exception" );
 112     }
 113     return p_pic;
 114 }
 115
 116 mediacontrol_RGBPicture **
 117 mediacontrol_all_snapshots( mediacontrol_Instance *self,
 118                             mediacontrol_Exception *exception )
 119 {
 120     exception=mediacontrol_exception_init( exception );
 121
 122     RAISE( mediacontrol_InternalException, "Unsupported method" );
 123     return NULL;
 124 }
 125
 126 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 127                            char *psz_string, text_style_t *p_style,
 128                            int i_flags, int i_hmargin, int i_vmargin,
 129                            mtime_t i_start, mtime_t i_stop )
 130 {
 131     subpicture_t *p_spu;
 132     video_format_t fmt;
 133
 134     if( !psz_string ) return VLC_EGENERIC;
 135
 136     p_spu = spu_CreateSubpicture( p_vout->p_spu );
 137     if( !p_spu ) return VLC_EGENERIC;
 138
 139     /* Create a new subpicture region */
 140     memset( &fmt, 0, sizeof(video_format_t) );
 141     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 142     fmt.i_aspect = 0;
 143     fmt.i_width = fmt.i_height = 0;
 144     fmt.i_x_offset = fmt.i_y_offset = 0;
 145     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
 146     if( !p_spu->p_region )
 147     {
 148         msg_Err( p_vout, "cannot allocate SPU region" );
 149         spu_DestroySubpicture( p_vout->p_spu, p_spu );
 150         return VLC_EGENERIC;
 151     }
 152
 153     p_spu->p_region->psz_text = strdup( psz_string );
 154     p_spu->i_start = i_start;
 155     p_spu->i_stop = i_stop;
 156     p_spu->b_ephemer = VLC_FALSE;
 157     p_spu->b_absolute = VLC_FALSE;
 158
 159     p_spu->i_x = i_hmargin;
 160     p_spu->i_y = i_vmargin;
 161     p_spu->i_flags = i_flags;
 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     input_thread_t *p_input = NULL;
 178     vout_thread_t *p_vout = NULL;
 179     char* psz_message;
 180
 181     psz_message = strdup( message );
 182     if( !psz_message )
 183     {
 184         RAISE( mediacontrol_InternalException, "No more memory" );
 185         return;
 186     }
 187
 188     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
 189     if( ! p_vout )
 190     {
 191         RAISE( mediacontrol_InternalException, "No video output" );
 192         return;
 193     }
 194
 195     if( begin->origin == mediacontrol_RelativePosition &&
 196         begin->value == 0 &&
 197         end->origin == mediacontrol_RelativePosition )
 198     {
 199         mtime_t i_duration = 0;
 200         mtime_t i_now = mdate();
 201
 202         i_duration = 1000 * mediacontrol_unit_convert(
 203                                                 self->p_playlist->p_input,
 204                                                 end->key,
 205                                                 mediacontrol_MediaTime,
 206                                                 end->value );
 207
 208         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
 209                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 210                                i_now, i_now + i_duration );
 211     }
 212     else
 213     {
 214         mtime_t i_debut, i_fin, i_now;
 215
 216         p_input = self->p_playlist->p_input;
 217         if( ! p_input )
 218         {
 219             RAISE( mediacontrol_InternalException, "No input" );
 220             vlc_object_release( p_vout );
 221             return;
 222         }
 223
 224         /* FIXME */
 225         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 226         i_now = mdate();
 227
 228         i_debut = mediacontrol_position2microsecond( p_input,
 229                                             ( mediacontrol_Position* ) begin );
 230         i_debut += i_now;
 231
 232         i_fin = mediacontrol_position2microsecond( p_input,
 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     short retval;
 249     audio_volume_t i_volume;
 250
 251     if( !self->p_intf )
 252     {
 253         RAISE( mediacontrol_InternalException, "No interface module" );
 254         return 0;
 255     }
 256     aout_VolumeGet( self->p_intf, &i_volume );
 257     retval = i_volume;
 258     return retval;
 259 }
 260
 261 void
 262 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 263                                const unsigned short volume,
 264                                mediacontrol_Exception *exception )
 265 {
 266     if( !self->p_intf )
 267     {
 268         RAISE( mediacontrol_InternalException, "No interface module" );
 269     }
 270     else aout_VolumeSet( self->p_intf,( audio_volume_t )volume );
 271 }
 272
 273 vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self,
 274                                     WINDOWHANDLE visual_id,
 275                                     mediacontrol_Exception *exception )
 276 {
 277     vlc_value_t value;
 278     int ret;
 279
 280     if( !self->p_vlc )
 281     {
 282         RAISE( mediacontrol_InternalException, "No vlc reference" );
 283         return VLC_FALSE;
 284     }
 285     value.i_int=visual_id;
 286     ret = var_Set(self->p_vlc, "drawable", value);
 287
 288     return (ret == VLC_SUCCESS);
 289 }