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 #include "media_player_internal.h"
  30
  31 #include <vlc/mediacontrol.h>
  32 #include <vlc/libvlc.h>
  33
  34 #include <vlc_vout.h>
  35 #include <vlc_input.h>
  36 #include <vlc_osd.h>
  37 #include <vlc_block.h>
  38
  39 #include <stdlib.h>                                      /* malloc(), free() */
  40 #include <string.h>
  41
  42 #include <errno.h>                                                 /* ENOMEM */
  43 #include <stdio.h>
  44 #include <ctype.h>
  45
  46 #ifdef HAVE_UNISTD_H
  47 #    include <unistd.h>
  48 #endif
  49 #ifdef HAVE_SYS_TIME_H
  50 #    include <sys/time.h>
  51 #endif
  52 #ifdef HAVE_SYS_TYPES_H
  53 #    include <sys/types.h>
  54 #endif
  55
  56 mediacontrol_RGBPicture *
  57 mediacontrol_snapshot( mediacontrol_Instance *self,
  58                        const mediacontrol_Position * a_position,
  59                        mediacontrol_Exception *exception )
  60 {
  61     (void)a_position;
  62     vout_thread_t* p_vout;
  63     input_thread_t *p_input;
  64     mediacontrol_RGBPicture *p_pic;
  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
  76     p_vout = input_GetVout( p_input );
  77     vlc_object_release( p_input );
  78     if( ! p_vout )
  79     {
  80         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  81     }
  82
  83     block_t *p_image;
  84     video_format_t fmt;
  85
  86     if( vout_GetSnapshot( p_vout, &p_image, NULL, &fmt, "png", 500*1000 ) )
  87     {
  88         vlc_object_release( p_vout );
  89         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
  90         return NULL;
  91     }
  92
  93     /* */
  94     char *p_data = malloc( p_image->i_buffer );
  95     if( p_data )
  96     {
  97         memcpy( p_data, p_image->p_buffer, p_image->i_buffer );
  98         p_pic = private_mediacontrol_createRGBPicture( fmt.i_width,
  99                                                        fmt.i_height,
 100                                                        fmt.i_chroma,
 101                                                        p_image->i_pts,
 102                                                        p_data,
 103                                                        p_image->i_buffer );
 104     }
 105     else
 106     {
 107         p_pic = NULL;
 108     }
 109     block_Release( p_image );
 110
 111     if( !p_pic )
 112         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 113
 114     vlc_object_release( p_vout );
 115     return p_pic;
 116 }
 117
 118 static
 119 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 120                            const char *psz_string, text_style_t *p_style,
 121                            int i_flags, int i_hmargin, int i_vmargin,
 122                            mtime_t i_start, mtime_t i_stop )
 123 {
 124     return osd_ShowTextAbsolute( vout_GetSpu( p_vout ), i_channel,
 125                                  psz_string, p_style,
 126                                  i_flags, i_hmargin, i_vmargin,
 127                                  i_start, i_stop );
 128 }
 129
 130
 131 void
 132 mediacontrol_display_text( mediacontrol_Instance *self,
 133                            const char * message,
 134                            const mediacontrol_Position * begin,
 135                            const mediacontrol_Position * end,
 136                            mediacontrol_Exception *exception )
 137 {
 138     vout_thread_t *p_vout = NULL;
 139     input_thread_t *p_input;
 140     libvlc_exception_t ex;
 141
 142     libvlc_exception_init( &ex );
 143     mediacontrol_exception_init( exception );
 144
 145     if( !message )
 146     {
 147         RAISE_VOID( mediacontrol_InternalException, "Empty text" );
 148     }
 149
 150     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
 151     if( ! p_input )
 152     {
 153         RAISE_VOID( mediacontrol_InternalException, "No input" );
 154     }
 155     p_vout = input_GetVout( p_input );
 156     /*FIXME: take care of the next fixme that can use p_input */
 157     vlc_object_release( p_input );
 158
 159     if( ! p_vout )
 160     {
 161         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 162     }
 163
 164     if( begin->origin == mediacontrol_RelativePosition &&
 165         begin->value == 0 &&
 166         end->origin == mediacontrol_RelativePosition )
 167     {
 168         mtime_t i_duration = 0;
 169         mtime_t i_now = mdate();
 170
 171         i_duration = 1000 * private_mediacontrol_unit_convert(
 172                                                               self->p_media_player,
 173                                                               end->key,
 174                                                               mediacontrol_MediaTime,
 175                                                               end->value );
 176
 177         mediacontrol_showtext( p_vout, DEFAULT_CHAN, message, NULL,
 178                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 179                                i_now, i_now + i_duration );
 180     }
 181     else
 182     {
 183         mtime_t i_debut, i_fin, i_now;
 184
 185         /* FIXME */
 186         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 187         i_now = mdate();
 188
 189         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 190                                             ( mediacontrol_Position* ) begin );
 191         i_debut += i_now;
 192
 193         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 194                                           ( mediacontrol_Position * ) end );
 195         i_fin += i_now;
 196
 197         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, message, NULL,
 198                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 199                                i_debut, i_fin );
 200     }
 201
 202     vlc_object_release( p_vout );
 203 }
 204
 205 unsigned short
 206 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 207                                mediacontrol_Exception *exception )
 208 {
 209     libvlc_exception_t ex;
 210     int i_ret = 0;
 211
 212     mediacontrol_exception_init( exception );
 213     libvlc_exception_init( &ex );
 214
 215     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
 216     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 217     /* FIXME: Normalize in [0..100] */
 218     return (unsigned short)i_ret;
 219 }
 220
 221 void
 222 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 223                                const unsigned short volume,
 224                                mediacontrol_Exception *exception )
 225 {
 226     /* FIXME: Normalize in [0..100] */
 227     libvlc_exception_t ex;
 228
 229     mediacontrol_exception_init( exception );
 230     libvlc_exception_init( &ex );
 231
 232     libvlc_audio_set_volume( self->p_instance, volume, &ex );
 233     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 234 }
 235
 236 int mediacontrol_set_visual( mediacontrol_Instance *self,
 237                                     WINDOWHANDLE visual_id,
 238                                     mediacontrol_Exception *exception )
 239 {
 240     libvlc_exception_t ex;
 241
 242     mediacontrol_exception_init( exception );
 243     libvlc_exception_init( &ex );
 244
 245     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
 246     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 247     return true;
 248 }
 249
 250 int
 251 mediacontrol_get_rate( mediacontrol_Instance *self,
 252                mediacontrol_Exception *exception )
 253 {
 254     libvlc_exception_t ex;
 255     int i_ret;
 256
 257     mediacontrol_exception_init( exception );
 258     libvlc_exception_init( &ex );
 259
 260     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
 261     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 262
 263     return i_ret / 10;
 264 }
 265
 266 void
 267 mediacontrol_set_rate( mediacontrol_Instance *self,
 268                const int rate,
 269                mediacontrol_Exception *exception )
 270 {
 271     libvlc_exception_t ex;
 272
 273     mediacontrol_exception_init( exception );
 274     libvlc_exception_init( &ex );
 275
 276     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
 277     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 278 }
 279
 280 int
 281 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 282                  mediacontrol_Exception *exception )
 283 {
 284     libvlc_exception_t ex;
 285     int i_ret;
 286
 287     mediacontrol_exception_init( exception );
 288     libvlc_exception_init( &ex );
 289
 290     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 291     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 292
 293     return i_ret;
 294 }
 295
 296 void
 297 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 298                  const int b_fullscreen,
 299                  mediacontrol_Exception *exception )
 300 {
 301     libvlc_exception_t ex;
 302
 303     mediacontrol_exception_init( exception );
 304     libvlc_exception_init( &ex );
 305
 306     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 307     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 308 }