vlc/src/control/video.c

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/*****************************************************************************
* video.c: libvlc new API video functions
*****************************************************************************
* Copyright (C) 2005 the VideoLAN team
*
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* $Id$
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*
* Authors: Cl<EFBFBD>ent Stenac <zorglub@videolan.org>
* Filippo Carone <littlejohn@videolan.org>
* Jean-Paul Saman <jpsaman _at_ m2x _dot_ nl>
* Damien Fouilleul <damienf a_t videolan dot org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "libvlc_internal.h"
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#include <vlc/libvlc.h>
#include <vlc_input.h>
#include <vlc_vout.h>
/*
* Remember to release the returned vout_thread_t.
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*/
static vout_thread_t *GetVout( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_exception )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_exception );
vout_thread_t *p_vout = NULL;
if( p_input_thread )
{
p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
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if( !p_vout )
{
libvlc_exception_raise( p_exception, "No active video output" );
}
vlc_object_release( p_input_thread );
}
return p_vout;
}
/**********************************************************************
* Exported functions
**********************************************************************/
void libvlc_set_fullscreen( libvlc_media_player_t *p_mi, int b_fullscreen,
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libvlc_exception_t *p_e )
{
/* We only work on the first vout */
vout_thread_t *p_vout = GetVout( p_mi, p_e );
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/* GetVout will raise the exception for us */
if( !p_vout ) return;
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var_SetBool( p_vout, "fullscreen", b_fullscreen );
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vlc_object_release( p_vout );
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}
int libvlc_get_fullscreen( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
{
/* We only work on the first vout */
vout_thread_t *p_vout = GetVout( p_mi, p_e );
int i_ret;
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/* GetVout will raise the exception for us */
if( !p_vout ) return 0;
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i_ret = var_GetBool( p_vout, "fullscreen" );
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vlc_object_release( p_vout );
return i_ret;
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}
void libvlc_toggle_fullscreen( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
{
/* We only work on the first vout */
vout_thread_t *p_vout = GetVout( p_mi, p_e );
bool ret;
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/* GetVout will raise the exception for us */
if( !p_vout ) return;
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ret = var_GetBool( p_vout, "fullscreen" );
var_SetBool( p_vout, "fullscreen", !ret );
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vlc_object_release( p_vout );
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}
void
libvlc_video_take_snapshot( libvlc_media_player_t *p_mi, char *psz_filepath,
unsigned int i_width, unsigned int i_height, libvlc_exception_t *p_e )
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{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
input_thread_t *p_input_thread;
/* GetVout will raise the exception for us */
if( !p_vout ) return;
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if( !psz_filepath )
{
libvlc_exception_raise( p_e, "filepath is null" );
return;
}
var_SetInteger( p_vout, "snapshot-width", i_width );
var_SetInteger( p_vout, "snapshot-height", i_height );
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p_input_thread = p_mi->p_input_thread;
if( !p_mi->p_input_thread )
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{
libvlc_exception_raise( p_e, "Input does not exist" );
return;
}
var_SetString( p_vout, "snapshot-path", psz_filepath );
var_SetString( p_vout, "snapshot-format", "png" );
vout_Control( p_vout, VOUT_SNAPSHOT );
vlc_object_release( p_vout );
}
int libvlc_video_get_height( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
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{
int height;
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vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( !p_vout ) return 0;
height = p_vout->i_window_height;
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vlc_object_release( p_vout );
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return height;
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}
int libvlc_video_get_width( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
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{
int width;
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vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( !p_vout ) return 0;
width = p_vout->i_window_width;
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vlc_object_release( p_vout );
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return width;
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}
int libvlc_media_player_has_vout( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
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{
input_thread_t *p_input_thread = libvlc_get_input_thread(p_mi, p_e);
bool has_vout = false;
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if( p_input_thread )
{
vout_thread_t *p_vout;
p_vout = vlc_object_find( p_input_thread, VLC_OBJECT_VOUT, FIND_CHILD );
if( p_vout )
{
has_vout = true;
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vlc_object_release( p_vout );
}
vlc_object_release( p_input_thread );
}
return has_vout;
}
int libvlc_video_reparent( libvlc_media_player_t *p_mi, libvlc_drawable_t d,
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libvlc_exception_t *p_e )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( p_vout )
{
vout_Control( p_vout , VOUT_REPARENT, d);
vlc_object_release( p_vout );
}
return 0;
}
void libvlc_video_resize( libvlc_media_player_t *p_mi, int width, int height, libvlc_exception_t *p_e )
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{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( p_vout )
{
vout_Control( p_vout, VOUT_SET_SIZE, width, height );
vlc_object_release( p_vout );
}
}
void libvlc_video_redraw_rectangle( libvlc_media_player_t *p_mi,
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const libvlc_rectangle_t *area,
libvlc_exception_t *p_e )
{
if( (NULL != area)
&& ((area->bottom - area->top) > 0)
&& ((area->right - area->left) > 0) )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( p_vout )
{
/* tell running vout to redraw area */
vout_Control( p_vout , VOUT_REDRAW_RECT,
area->top, area->left, area->bottom, area->right );
vlc_object_release( p_vout );
}
}
}
/* global video settings */
/* Deprecated use libvlc_media_player_set_drawable() */
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void libvlc_video_set_parent( libvlc_instance_t *p_instance, libvlc_drawable_t d,
libvlc_exception_t *p_e )
{
/* set as default for future vout instances */
var_SetInteger(p_instance->p_libvlc_int, "drawable", (int)d);
libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
if( p_mi )
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{
libvlc_media_player_set_drawable( p_mi, d, p_e );
libvlc_media_player_release(p_mi);
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}
}
/* Deprecated use libvlc_media_player_get_drawable() */
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libvlc_drawable_t libvlc_video_get_parent( libvlc_instance_t *p_instance, libvlc_exception_t *p_e )
{
VLC_UNUSED(p_e);
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libvlc_drawable_t result;
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result = var_GetInteger( p_instance->p_libvlc_int, "drawable" );
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return result;
}
void libvlc_video_set_size( libvlc_instance_t *p_instance, int width, int height,
libvlc_exception_t *p_e )
{
/* set as default for future vout instances */
config_PutInt(p_instance->p_libvlc_int, "width", width);
config_PutInt(p_instance->p_libvlc_int, "height", height);
libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
if( p_mi )
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{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( p_vout )
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{
/* tell running vout to re-size */
vout_Control( p_vout , VOUT_SET_SIZE, width, height);
vlc_object_release( p_vout );
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}
libvlc_media_player_release(p_mi);
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}
}
void libvlc_video_set_viewport( libvlc_instance_t *p_instance,
const libvlc_rectangle_t *view, const libvlc_rectangle_t *clip,
libvlc_exception_t *p_e )
{
if( !view )
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{
libvlc_exception_raise( p_e, "viewport is NULL" );
return;
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}
/* if clip is NULL, then use view rectangle as clip */
if( !clip )
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clip = view;
/* set as default for future vout instances */
var_SetInteger( p_instance->p_libvlc_int, "drawable-view-top", view->top );
var_SetInteger( p_instance->p_libvlc_int, "drawable-view-left", view->left );
var_SetInteger( p_instance->p_libvlc_int, "drawable-view-bottom", view->bottom );
var_SetInteger( p_instance->p_libvlc_int, "drawable-view-right", view->right );
var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-top", clip->top );
var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-left", clip->left );
var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-bottom", clip->bottom );
var_SetInteger( p_instance->p_libvlc_int, "drawable-clip-right", clip->right );
libvlc_media_player_t *p_mi = libvlc_playlist_get_media_player(p_instance, p_e);
if( p_mi )
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{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( p_vout )
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{
/* change viewport for running vout */
vout_Control( p_vout , VOUT_SET_VIEWPORT,
view->top, view->left, view->bottom, view->right,
clip->top, clip->left, clip->bottom, clip->right );
vlc_object_release( p_vout );
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}
libvlc_media_player_release(p_mi);
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}
}
char *libvlc_video_get_aspect_ratio( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
{
char *psz_aspect = 0;
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( !p_vout ) return 0;
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psz_aspect = var_GetNonEmptyString( p_vout, "aspect-ratio" );
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vlc_object_release( p_vout );
return psz_aspect ? psz_aspect : strdup("");
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}
void libvlc_video_set_aspect_ratio( libvlc_media_player_t *p_mi,
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char *psz_aspect, libvlc_exception_t *p_e )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
int i_ret = -1;
if( !p_vout ) return;
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i_ret = var_SetString( p_vout, "aspect-ratio", psz_aspect );
if( i_ret )
libvlc_exception_raise( p_e,
"Unexpected error while setting aspect-ratio value" );
vlc_object_release( p_vout );
}
int libvlc_video_get_spu( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
vlc_value_t val;
int i_spu = -1;
int i_ret = -1;
int i;
if( !p_input_thread ) return -1;
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i_ret = var_Get( p_input_thread, "spu-es", &val );
if( i_ret < 0 )
{
libvlc_exception_raise( p_e, "Getting subtitle information failed" );
vlc_object_release( p_input_thread );
return i_ret;
}
var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
for( i = 0; i < val_list.p_list->i_count; i++ )
{
vlc_value_t spu_val = val_list.p_list->p_values[i];
if( val.i_int == spu_val.i_int )
{
i_spu = i;
break;
}
}
vlc_object_release( p_input_thread );
return i_spu;
}
int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
if( !p_input_thread )
return -1;
var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
vlc_object_release( p_input_thread );
return val_list.p_list->i_count;
}
libvlc_track_description_t *
libvlc_video_get_spu_description( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
return libvlc_get_track_description( p_mi, "spu-es", p_e);
}
void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
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libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
vlc_value_t newval;
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int i_ret = -1;
if( !p_input_thread ) return;
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var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
if( (i_spu < 0) && (i_spu > val_list.p_list->i_count) )
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{
libvlc_exception_raise( p_e, "Subtitle value out of range" );
vlc_object_release( p_input_thread );
return;
}
newval = val_list.p_list->p_values[i_spu];
i_ret = var_Set( p_input_thread, "spu-es", newval );
if( i_ret < 0 )
{
libvlc_exception_raise( p_e, "Setting subtitle value failed" );
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}
vlc_object_release( p_input_thread );
}
int libvlc_video_set_subtitle_file( libvlc_media_player_t *p_mi,
char *psz_subtitle,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi, p_e );
bool b_ret = false;
if( p_input_thread )
{
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if( !input_AddSubtitle( p_input_thread, psz_subtitle, true ) )
b_ret = true;
vlc_object_release( p_input_thread );
}
return b_ret;
}
libvlc_track_description_t *
libvlc_video_get_title_description( libvlc_media_player_t *p_mi,
libvlc_exception_t * p_e )
{
return libvlc_get_track_description( p_mi, "title", p_e);
}
libvlc_track_description_t *
libvlc_video_get_chapter_description( libvlc_media_player_t *p_mi,
int i_title,
libvlc_exception_t *p_e )
{
char psz_title[12];
sprintf( psz_title, "title %2i", i_title );
return libvlc_get_track_description( p_mi, psz_title, p_e);
}
char *libvlc_video_get_crop_geometry( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
{
char *psz_geometry = 0;
vout_thread_t *p_vout = GetVout( p_mi, p_e );
if( !p_vout ) return 0;
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psz_geometry = var_GetNonEmptyString( p_vout, "crop" );
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vlc_object_release( p_vout );
return psz_geometry ? psz_geometry : strdup("");
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}
void libvlc_video_set_crop_geometry( libvlc_media_player_t *p_mi,
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char *psz_geometry, libvlc_exception_t *p_e )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
int i_ret = -1;
if( !p_vout ) return;
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i_ret = var_SetString( p_vout, "crop", psz_geometry );
if( i_ret )
libvlc_exception_raise( p_e,
"Unexpected error while setting crop geometry" );
vlc_object_release( p_vout );
}
int libvlc_video_get_teletext( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
vlc_object_t *p_vbi;
int i_ret = -1;
if( !p_vout ) return i_ret;
p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
FIND_ANYWHERE );
if( p_vbi )
{
i_ret = var_GetInteger( p_vbi, "vbi-page" );
vlc_object_release( p_vbi );
}
vlc_object_release( p_vout );
return i_ret;
}
void libvlc_video_set_teletext( libvlc_media_player_t *p_mi, int i_page,
libvlc_exception_t *p_e )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
vlc_object_t *p_vbi;
int i_ret = -1;
if( !p_vout ) return;
p_vbi = (vlc_object_t *) vlc_object_find_name( p_vout, "zvbi",
FIND_ANYWHERE );
if( p_vbi )
{
i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
vlc_object_release( p_vbi );
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if( i_ret )
libvlc_exception_raise( p_e,
"Unexpected error while setting teletext page" );
}
vlc_object_release( p_vout );
}
void libvlc_toggle_teletext( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread;
vlc_object_t *p_vbi;
int i_ret;
p_input_thread = libvlc_get_input_thread(p_mi, p_e);
if( !p_input_thread ) return;
p_vbi = (vlc_object_t *) vlc_object_find_name( p_input_thread, "zvbi",
FIND_ANYWHERE );
if( p_vbi )
{
const int i_teletext_es = var_GetInteger( p_input_thread, "teletext-es" );
const int i_spu_es = var_GetInteger( p_input_thread, "spu-es" );
if( (i_teletext_es >= 0) && (i_teletext_es == i_spu_es) )
{
int i_page = 100;
i_page = var_GetInteger( p_vbi, "vbi-page" );
i_page = (i_teletext_es >= 0) ? i_page : 0;
i_ret = var_SetInteger( p_vbi, "vbi-page", i_page );
if( i_ret )
libvlc_exception_raise( p_e,
"Unexpected error while setting teletext page" );
}
else if( i_teletext_es >= 0 )
{
bool opaque = true;
opaque = var_GetBool( p_vbi, "vbi-opaque" );
i_ret = var_SetBool( p_vbi, "vbi-opaque", !opaque );
if( i_ret )
libvlc_exception_raise( p_e,
"Unexpected error while setting teletext transparency" );
}
vlc_object_release( p_vbi );
}
else
{
/* Teletext is not enabled yet, so enable it.
* Only after it is enable it is possible to view teletext pages
*/
const int i_teletext_es = var_GetInteger( p_input_thread, "teletext-es" );
if( i_teletext_es >= 0 )
{
const int i_spu_es = var_GetInteger( p_input_thread, "spu-es" );
if( i_teletext_es == i_spu_es )
var_SetInteger( p_input_thread, "spu-es", -1 );
else
var_SetInteger( p_input_thread, "spu-es", i_teletext_es );
}
}
vlc_object_release( p_input_thread );
}
int libvlc_video_get_track_count( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
if( !p_input_thread )
return -1;
var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
vlc_object_release( p_input_thread );
return val_list.p_list->i_count;
}
libvlc_track_description_t *
libvlc_video_get_track_description( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
return libvlc_get_track_description( p_mi, "video-es", p_e);
}
int libvlc_video_get_track( libvlc_media_player_t *p_mi,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
vlc_value_t val;
int i_track = -1;
int i_ret = -1;
int i;
if( !p_input_thread )
return -1;
i_ret = var_Get( p_input_thread, "video-es", &val );
if( i_ret < 0 )
{
libvlc_exception_raise( p_e, "Getting Video track information failed" );
vlc_object_release( p_input_thread );
return i_ret;
}
var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
for( i = 0; i < val_list.p_list->i_count; i++ )
{
vlc_value_t track_val = val_list.p_list->p_values[i];
if( track_val.i_int == val.i_int )
{
i_track = i;
break;
}
}
vlc_object_release( p_input_thread );
return i_track;
}
void libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track,
libvlc_exception_t *p_e )
{
input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
vlc_value_t val_list;
int i_ret = -1;
int i;
if( !p_input_thread )
return;
var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
for( i = 0; i < val_list.p_list->i_count; i++ )
{
vlc_value_t val = val_list.p_list->p_values[i];
if( i_track == val.i_int )
{
i_ret = var_Set( p_input_thread, "audio-es", val );
if( i_ret < 0 )
libvlc_exception_raise( p_e, "Setting video track failed" );
vlc_object_release( p_input_thread );
return;
}
}
libvlc_exception_raise( p_e, "Video track out of range" );
vlc_object_release( p_input_thread );
}
int libvlc_video_destroy( libvlc_media_player_t *p_mi,
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libvlc_exception_t *p_e )
{
vout_thread_t *p_vout = GetVout( p_mi, p_e );
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vlc_object_detach( p_vout );
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vlc_object_release( p_vout );
vlc_object_release( p_vout );
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return 0;
}