vlc/lib/core.c

261 lines
7.3 KiB
C

/*****************************************************************************
* core.c: Core libvlc new API functions : initialization
*****************************************************************************
* Copyright (C) 2005 VLC authors and VideoLAN
* $Id$
*
* Authors: Clément Stenac <zorglub@videolan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "libvlc_internal.h"
#include <vlc_modules.h>
#include <vlc/vlc.h>
#include <vlc_interface.h>
#include <vlc_vlm.h>
#include <stdarg.h>
#include <limits.h>
#include <assert.h>
#include "../src/revision.c"
libvlc_instance_t * libvlc_new( int argc, const char *const *argv )
{
libvlc_threads_init ();
libvlc_instance_t *p_new = malloc (sizeof (*p_new));
if (unlikely(p_new == NULL))
return NULL;
const char *my_argv[argc + 2];
my_argv[0] = "libvlc"; /* dummy arg0, skipped by getopt() et al */
for( int i = 0; i < argc; i++ )
my_argv[i + 1] = argv[i];
my_argv[argc + 1] = NULL; /* C calling conventions require a NULL */
libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
if (unlikely (p_libvlc_int == NULL))
goto error;
if (libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv ))
{
libvlc_InternalDestroy( p_libvlc_int );
goto error;
}
p_new->p_libvlc_int = p_libvlc_int;
p_new->vlm = NULL;
p_new->ref_count = 1;
p_new->p_callback_list = NULL;
vlc_mutex_init(&p_new->instance_lock);
return p_new;
error:
free (p_new);
libvlc_threads_deinit ();
return NULL;
}
void libvlc_retain( libvlc_instance_t *p_instance )
{
assert( p_instance != NULL );
assert( p_instance->ref_count < UINT_MAX );
vlc_mutex_lock( &p_instance->instance_lock );
p_instance->ref_count++;
vlc_mutex_unlock( &p_instance->instance_lock );
}
void libvlc_release( libvlc_instance_t *p_instance )
{
vlc_mutex_t *lock = &p_instance->instance_lock;
int refs;
vlc_mutex_lock( lock );
assert( p_instance->ref_count > 0 );
refs = --p_instance->ref_count;
vlc_mutex_unlock( lock );
if( refs == 0 )
{
vlc_mutex_destroy( lock );
if( p_instance->vlm != NULL )
libvlc_vlm_release( p_instance );
libvlc_Quit( p_instance->p_libvlc_int );
libvlc_InternalCleanup( p_instance->p_libvlc_int );
libvlc_InternalDestroy( p_instance->p_libvlc_int );
free( p_instance );
libvlc_threads_deinit ();
}
}
void libvlc_set_exit_handler( libvlc_instance_t *p_i, void (*cb) (void *),
void *data )
{
libvlc_int_t *p_libvlc = p_i->p_libvlc_int;
libvlc_SetExitHandler( p_libvlc, cb, data );
}
static void libvlc_wait_wakeup( void *data )
{
vlc_sem_post( data );
}
void libvlc_wait( libvlc_instance_t *p_i )
{
vlc_sem_t sem;
vlc_sem_init( &sem, 0 );
libvlc_set_exit_handler( p_i, libvlc_wait_wakeup, &sem );
vlc_sem_wait( &sem );
libvlc_set_exit_handler( p_i, NULL, NULL );
vlc_sem_destroy( &sem );
}
void libvlc_set_user_agent (libvlc_instance_t *p_i,
const char *name, const char *http)
{
libvlc_int_t *p_libvlc = p_i->p_libvlc_int;
char *str;
var_SetString (p_libvlc, "user-agent", name);
if ((http != NULL)
&& (asprintf (&str, "%s LibVLC/"PACKAGE_VERSION, http) != -1))
{
var_SetString (p_libvlc, "http-user-agent", str);
free (str);
}
}
void libvlc_set_app_id(libvlc_instance_t *p_i, const char *id,
const char *version, const char *icon)
{
libvlc_int_t *p_libvlc = p_i->p_libvlc_int;
var_SetString(p_libvlc, "app-id", id ? id : "");
var_SetString(p_libvlc, "app-version", version ? version : "");
var_SetString(p_libvlc, "app-icon-name", icon ? icon : "");
}
const char * libvlc_get_version(void)
{
return VERSION_MESSAGE;
}
const char * libvlc_get_compiler(void)
{
return VLC_Compiler();
}
const char * libvlc_get_changeset(void)
{
extern const char psz_vlc_changeset[];
return psz_vlc_changeset;
}
void libvlc_free( void *ptr )
{
free( ptr );
}
static libvlc_module_description_t *module_description_list_get(
libvlc_instance_t *p_instance, const char *capability )
{
libvlc_module_description_t *p_list = NULL,
*p_actual = NULL,
*p_previous = NULL;
size_t count;
module_t **module_list = module_list_get( &count );
for (size_t i = 0; i < count; i++)
{
module_t *p_module = module_list[i];
if ( !module_provides( p_module, capability ) )
continue;
p_actual = ( libvlc_module_description_t * ) malloc( sizeof( libvlc_module_description_t ) );
if ( p_actual == NULL )
{
libvlc_printerr( "Not enough memory" );
libvlc_module_description_list_release( p_list );
module_list_free( module_list );
return NULL;
}
if ( p_list == NULL )
p_list = p_actual;
const char* name = module_get_object( p_module );
const char* shortname = module_get_name( p_module, false );
const char* longname = module_get_name( p_module, true );
const char* help = module_get_help( p_module );
p_actual->psz_name = name ? strdup( name ) : NULL;
p_actual->psz_shortname = shortname ? strdup( shortname ) : NULL;
p_actual->psz_longname = longname ? strdup( longname ) : NULL;
p_actual->psz_help = help ? strdup( help ) : NULL;
p_actual->p_next = NULL;
if ( p_previous )
p_previous->p_next = p_actual;
p_previous = p_actual;
}
module_list_free( module_list );
VLC_UNUSED( p_instance );
return p_list;
}
void libvlc_module_description_list_release( libvlc_module_description_t *p_list )
{
libvlc_module_description_t *p_actual, *p_before;
p_actual = p_list;
while ( p_actual )
{
free( p_actual->psz_name );
free( p_actual->psz_shortname );
free( p_actual->psz_longname );
free( p_actual->psz_help );
p_before = p_actual;
p_actual = p_before->p_next;
free( p_before );
}
}
libvlc_module_description_t *libvlc_audio_filter_list_get( libvlc_instance_t *p_instance )
{
return module_description_list_get( p_instance, "audio filter" );
}
libvlc_module_description_t *libvlc_video_filter_list_get( libvlc_instance_t *p_instance )
{
return module_description_list_get( p_instance, "video filter" );
}
int64_t libvlc_clock(void)
{
return mdate();
}
const char vlc_module_name[] = "libvlc";