core.c 7.29 KB
Newer Older
1
/*****************************************************************************
2
 * core.c: Core libvlc new API functions : initialization
3
 *****************************************************************************
4
 * Copyright (C) 2005 the VideoLAN team
5
 * $Id$
6
 *
7
 * Authors: Clément Stenac <zorglub@videolan.org>
8 9 10 11 12 13 14 15 16 17 18 19 20
 *
 * 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
Antoine Cellerier's avatar
Antoine Cellerier committed
21
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22
 *****************************************************************************/
23

24 25 26 27
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

Clément Stenac's avatar
Clément Stenac committed
28
#include "libvlc_internal.h"
29
#include <vlc_modules.h>
Clément Stenac's avatar
Clément Stenac committed
30
#include <vlc/libvlc.h>
31

Clément Stenac's avatar
Clément Stenac committed
32
#include <vlc_interface.h>
33
#include <vlc_vlm.h>
34

35 36 37 38
#include <stdarg.h>
#include <limits.h>
#include <assert.h>

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
39 40
static const char nomemstr[] = "Insufficient memory";

41
libvlc_instance_t * libvlc_new( int argc, const char *const *argv )
42
{
43 44 45
    libvlc_instance_t *p_new = malloc (sizeof (*p_new));
    if (unlikely(p_new == NULL))
        return NULL;
46 47 48

    libvlc_init_threads ();

49 50 51 52 53 54
    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 */

55 56 57
    libvlc_int_t *p_libvlc_int = libvlc_InternalCreate();
    if (unlikely (p_libvlc_int == NULL))
        goto error;
58

59
    if (libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv ))
60
    {
Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
61
        libvlc_InternalDestroy( p_libvlc_int );
62
        goto error;
63
    }
64

65
    p_new->p_libvlc_int = p_libvlc_int;
66 67 68
    p_new->libvlc_vlm.p_vlm = NULL;
    p_new->libvlc_vlm.p_event_manager = NULL;
    p_new->libvlc_vlm.pf_release = NULL;
69
    p_new->ref_count = 1;
70
    p_new->p_callback_list = NULL;
71
    vlc_mutex_init(&p_new->instance_lock);
72 73
    var_Create( p_libvlc_int, "http-user-agent",
                VLC_VAR_STRING|VLC_VAR_DOINHERIT );
Clément Stenac's avatar
Clément Stenac committed
74
    return p_new;
75 76 77 78 79

error:
    libvlc_deinit_threads ();
    free (p_new);
    return NULL;
80 81
}

82 83 84 85 86 87 88 89 90 91
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 );
}

92
void libvlc_release( libvlc_instance_t *p_instance )
93
{
94 95 96
    vlc_mutex_t *lock = &p_instance->instance_lock;
    int refs;

97
    vlc_mutex_lock( lock );
98
    assert( p_instance->ref_count > 0 );
99
    refs = --p_instance->ref_count;
100
    vlc_mutex_unlock( lock );
101 102 103

    if( refs == 0 )
    {
104
        vlc_mutex_destroy( lock );
105 106
        if( p_instance->libvlc_vlm.pf_release )
            p_instance->libvlc_vlm.pf_release( p_instance );
107
        libvlc_InternalCleanup( p_instance->p_libvlc_int );
108
        libvlc_InternalDestroy( p_instance->p_libvlc_int );
109
        free( p_instance );
110
        libvlc_deinit_threads ();
111
    }
112
}
Damien Fouilleul's avatar
Damien Fouilleul committed
113

114
int libvlc_add_intf( libvlc_instance_t *p_i, const char *name )
115
{
116 117 118 119 120 121 122 123 124 125 126 127 128 129
    if( libvlc_InternalAddIntf( p_i->p_libvlc_int, name ))
    {
        if( name )
        {
            libvlc_printerr("interface \"%s\" initialization failed",
                name );
        }
        else
        {
            libvlc_printerr("default interface initialization failed");
        }
        return -1;
    }
    return 0;
130 131
}

132 133 134 135 136 137 138
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 );
}

139 140 141
void libvlc_wait( libvlc_instance_t *p_i )
{
    libvlc_int_t *p_libvlc = p_i->p_libvlc_int;
142
    libvlc_InternalWait( p_libvlc );
143 144
}

145 146 147 148
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;
149
    char *str;
150 151

    var_SetString (p_libvlc, "user-agent", name);
152 153 154 155 156 157
    if ((http != NULL)
     && (asprintf (&str, "%s LibVLC/"PACKAGE_VERSION, http) != -1))
    {
        var_SetString (p_libvlc, "http-user-agent", str);
        free (str);
    }
158 159
}

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
160
const char * libvlc_get_version(void)
161
{
162
    return VERSION_MESSAGE;
163 164
}

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
165
const char * libvlc_get_compiler(void)
166 167 168 169
{
    return VLC_Compiler();
}

Rémi Denis-Courmont's avatar
Rémi Denis-Courmont committed
170
const char * libvlc_get_changeset(void)
171
{
172 173
    extern const char psz_vlc_changeset[];
    return psz_vlc_changeset;
174
}
175 176 177 178 179

void libvlc_free( void *ptr )
{
    free( ptr );
}
180

181 182
static libvlc_module_description_t *module_description_list_get(
                libvlc_instance_t *p_instance, const char *capability )
183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
{
    VLC_UNUSED( p_instance );
    libvlc_module_description_t *p_list = NULL,
                          *p_actual = NULL,
                          *p_previous = NULL;
    module_t **module_list = module_list_get( NULL );

    for (size_t i = 0; module_list[i]; 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 );
    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 )
{
247
    return module_description_list_get( p_instance, "audio filter" );
248 249 250 251
}

libvlc_module_description_t *libvlc_video_filter_list_get( libvlc_instance_t *p_instance )
{
252
    return module_description_list_get( p_instance, "video filter2" );
253
}
254 255 256 257 258

int64_t libvlc_clock(void)
{
    return mdate();
}