bindings/mediacontrol/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 <stdio.h>
  43
  44 #ifdef HAVE_UNISTD_H
  45 #    include <unistd.h>
  46 #endif
  47 #include <sys/types.h>
  48
  49 mediacontrol_RGBPicture *
  50 mediacontrol_snapshot( mediacontrol_Instance *self,
  51                        const mediacontrol_Position * a_position,
  52                        mediacontrol_Exception *exception )
  53 {
  54     (void)a_position;
  55     vout_thread_t* p_vout;
  56     input_thread_t *p_input;
  57     mediacontrol_RGBPicture *p_pic;
  58     libvlc_exception_t ex;
  59
  60     libvlc_exception_init( &ex );
  61     mediacontrol_exception_init( exception );
  62
  63     p_input = libvlc_get_input_thread( self->p_media_player );
  64     if( ! p_input )
  65     {
  66         RAISE_NULL( mediacontrol_InternalException, "No input" );
  67     }
  68
  69     p_vout = input_GetVout( p_input );
  70     vlc_object_release( p_input );
  71     if( ! p_vout )
  72     {
  73         RAISE_NULL( mediacontrol_InternalException, "No video output" );
  74     }
  75
  76     block_t *p_image;
  77     video_format_t fmt;
  78
  79     if( vout_GetSnapshot( p_vout, &p_image, NULL, &fmt, "png", 500*1000 ) )
  80     {
  81         vlc_object_release( p_vout );
  82         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
  83         return NULL;
  84     }
  85
  86     /* */
  87     char *p_data = malloc( p_image->i_buffer );
  88     if( p_data )
  89     {
  90         memcpy( p_data, p_image->p_buffer, p_image->i_buffer );
  91         p_pic = private_mediacontrol_createRGBPicture( fmt.i_width,
  92                                                        fmt.i_height,
  93                                                        fmt.i_chroma,
  94                                                        p_image->i_pts,
  95                                                        p_data,
  96                                                        p_image->i_buffer );
  97     }
  98     else
  99     {
 100         p_pic = NULL;
 101     }
 102     block_Release( p_image );
 103
 104     if( !p_pic )
 105         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
 106
 107     vlc_object_release( p_vout );
 108     return p_pic;
 109 }
 110
 111 static
 112 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
 113                            const char *psz_string, text_style_t *p_style,
 114                            int i_flags, int i_hmargin, int i_vmargin,
 115                            mtime_t i_start, mtime_t i_stop )
 116 {
 117     (void)p_style; (void)i_hmargin; (void)i_vmargin;
 118     vout_OSDText( p_vout, i_channel, i_flags & ~SUBPICTURE_ALIGN_MASK,
 119                   i_stop - i_start, psz_string );
 120 }
 121
 122
 123 void
 124 mediacontrol_display_text( mediacontrol_Instance *self,
 125                            const char * message,
 126                            const mediacontrol_Position * begin,
 127                            const mediacontrol_Position * end,
 128                            mediacontrol_Exception *exception )
 129 {
 130     vout_thread_t *p_vout = NULL;
 131     input_thread_t *p_input;
 132     libvlc_exception_t ex;
 133
 134     libvlc_exception_init( &ex );
 135     mediacontrol_exception_init( exception );
 136
 137     if( !message )
 138     {
 139         RAISE_VOID( mediacontrol_InternalException, "Empty text" );
 140     }
 141
 142     p_input = libvlc_get_input_thread( self->p_media_player );
 143     if( ! p_input )
 144     {
 145         RAISE_VOID( mediacontrol_InternalException, "No input" );
 146     }
 147     p_vout = input_GetVout( p_input );
 148     /*FIXME: take care of the next fixme that can use p_input */
 149     vlc_object_release( p_input );
 150
 151     if( ! p_vout )
 152     {
 153         RAISE_VOID( mediacontrol_InternalException, "No video output" );
 154     }
 155
 156     if( begin->origin == mediacontrol_RelativePosition &&
 157         begin->value == 0 &&
 158         end->origin == mediacontrol_RelativePosition )
 159     {
 160         mtime_t i_duration = 0;
 161         mtime_t i_now = mdate();
 162
 163         i_duration = 1000 * private_mediacontrol_unit_convert(
 164                                                               self->p_media_player,
 165                                                               end->key,
 166                                                               mediacontrol_MediaTime,
 167                                                               end->value );
 168
 169         mediacontrol_showtext( p_vout, DEFAULT_CHAN, message, NULL,
 170                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 171                                i_now, i_now + i_duration );
 172     }
 173     else
 174     {
 175         mtime_t i_debut, i_fin, i_now;
 176
 177         /* FIXME */
 178         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
 179         i_now = mdate();
 180
 181         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
 182                                             ( mediacontrol_Position* ) begin );
 183         i_debut += i_now;
 184
 185         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
 186                                           ( mediacontrol_Position * ) end );
 187         i_fin += i_now;
 188
 189         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, message, NULL,
 190                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
 191                                i_debut, i_fin );
 192     }
 193
 194     vlc_object_release( p_vout );
 195 }
 196
 197 unsigned short
 198 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
 199                                mediacontrol_Exception *exception )
 200 {
 201     int i_ret = 0;
 202
 203     mediacontrol_exception_init( exception );
 204
 205     //i_ret = libvlc_audio_get_volume( self->p_instance );
 206 #warning FIXME: unimplented
 207     /* FIXME: Normalize in [0..100] */
 208     return (unsigned short)i_ret;
 209 }
 210
 211 void
 212 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
 213                                const unsigned short volume,
 214                                mediacontrol_Exception *exception )
 215 {
 216     /* FIXME: Normalize in [0..100] */
 217     mediacontrol_exception_init( exception );
 218
 219     //libvlc_audio_set_volume( self->p_instance, volume );
 220 #warning FIXME: unimplented
 221 }
 222
 223 int mediacontrol_set_visual( mediacontrol_Instance *self,
 224                                     WINDOWHANDLE visual_id,
 225                                     mediacontrol_Exception *exception )
 226 {
 227     mediacontrol_exception_init( exception );
 228 #ifdef WIN32
 229     libvlc_media_player_set_hwnd( self->p_media_player, visual_id );
 230 #else
 231     libvlc_media_player_set_xwindow( self->p_media_player, visual_id );
 232 #endif
 233     return true;
 234 }
 235
 236 int
 237 mediacontrol_get_rate( mediacontrol_Instance *self,
 238                mediacontrol_Exception *exception )
 239 {
 240     int i_ret;
 241
 242     mediacontrol_exception_init( exception );
 243     i_ret = libvlc_media_player_get_rate( self->p_media_player );
 244
 245     return (i_ret >= 0) ? (i_ret / 10) : -1;
 246 }
 247
 248 void
 249 mediacontrol_set_rate( mediacontrol_Instance *self,
 250                const int rate,
 251                mediacontrol_Exception *exception )
 252 {
 253     mediacontrol_exception_init( exception );
 254
 255     libvlc_media_player_set_rate( self->p_media_player, rate * 10 );
 256 }
 257
 258 int
 259 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
 260                  mediacontrol_Exception *exception )
 261 {
 262     libvlc_exception_t ex;
 263     int i_ret;
 264
 265     mediacontrol_exception_init( exception );
 266     libvlc_exception_init( &ex );
 267
 268     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
 269     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
 270
 271     return i_ret;
 272 }
 273
 274 void
 275 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
 276                  const int b_fullscreen,
 277                  mediacontrol_Exception *exception )
 278 {
 279     libvlc_exception_t ex;
 280
 281     mediacontrol_exception_init( exception );
 282     libvlc_exception_init( &ex );
 283
 284     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
 285     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
 286 }