/*****************************************************************************

 * core.c: Core libvlc new API functions : initialization

 *****************************************************************************

 * Copyright (C) 2005 VLC authors and VideoLAN

 *

 * 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_preparser.h>

#include <vlc_interface.h>

#include <stdarg.h>

#include <limits.h>

#include <assert.h>

static_assert(LIBVLC_VERSION_MAJOR    == PACKAGE_VERSION_MAJOR, "Major VLC version mismatch");

static_assert(LIBVLC_VERSION_MINOR    == PACKAGE_VERSION_MINOR, "Minor VLC version mismatch");

static_assert(LIBVLC_VERSION_REVISION == PACKAGE_VERSION_REVISION, "VLC Revision version mismatch");

static_assert(LIBVLC_VERSION_EXTRA    == PACKAGE_VERSION_EXTRA, "VLC Extra version mismatch");

static_assert(LIBVLC_ABI_VERSION_MAJOR == LIBVLC_ABI_MAJOR, "Major LibVLC version mismatch");

static_assert(LIBVLC_ABI_VERSION_MINOR == LIBVLC_ABI_MINOR, "Minor LibVLC version mismatch");

static_assert(LIBVLC_ABI_VERSION_MICRO == LIBVLC_ABI_MICRO, "Micro LibVLC version mismatch");

int libvlc_abi_version(void)

{

    return LIBVLC_ABI_VERSION_INT;

}

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;

    const int ret = libvlc_InternalInit( p_libvlc_int, argc + 1, my_argv );

    if (ret != VLC_SUCCESS)

    {

        libvlc_InternalDestroy( p_libvlc_int );

        const char *error = (ret == VLC_EGENERIC) ? _( "Generic VLC error" )

                                                  : vlc_strerror_c( -ret );

        libvlc_printerr( "%s", error );

        goto error;

    }

    p_new->p_libvlc_int = p_libvlc_int;

    vlc_atomic_rc_init( &p_new->ref_count );

    p_new->p_callback_list = NULL;

    vlc_mutex_init(&p_new->lazy_init_lock);

    p_new->parser = NULL;

    p_new->thumbnailer = NULL;

    return p_new;

error:

    free (p_new);

    libvlc_threads_deinit ();

    return NULL;

}

libvlc_instance_t *libvlc_retain( libvlc_instance_t *p_instance )

{

    assert( p_instance != NULL );

    vlc_atomic_rc_inc( &p_instance->ref_count );

    return p_instance;

}

void libvlc_release( libvlc_instance_t *p_instance )

{

    if(vlc_atomic_rc_dec( &p_instance->ref_count ))

    {

        libvlc_Quit( p_instance->p_libvlc_int );

        if (p_instance->parser != NULL)

            vlc_preparser_Delete(p_instance->parser);

        if (p_instance->thumbnailer != NULL)

            vlc_preparser_Delete(p_instance->thumbnailer);

        libvlc_InternalCleanup( p_instance->p_libvlc_int );

        libvlc_InternalDestroy( p_instance->p_libvlc_int );

        free( p_instance );

        libvlc_threads_deinit ();

    }

}

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_GetShortName( p_module );

        const char* longname = module_GetLongName( p_module );

        const char* help = module_get_help( p_module );

        const char* help_html = module_get_help_html( 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->psz_help_html = help_html ? strdup( help_html ) : 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 );

        free( p_actual->psz_help_html );

        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 US_FROM_VLC_TICK(vlc_tick_now());

}

vlc_preparser_t *libvlc_get_preparser(libvlc_instance_t *instance)

{

    vlc_mutex_lock(&instance->lazy_init_lock);

    vlc_preparser_t *parser = instance->parser;

    if (parser == NULL)

    {

        /* Temporary: the 2 following variables will be configured directly

         * with future libvlc_parser API */

        int max_threads = var_InheritInteger(instance->p_libvlc_int, "preparse-threads");

        if (max_threads < 1)

            max_threads = 1;

        vlc_tick_t default_timeout =

            VLC_TICK_FROM_MS(var_InheritInteger(instance->p_libvlc_int, "preparse-timeout"));

        if (default_timeout < 0)

            default_timeout = 0;

        const struct vlc_preparser_cfg cfg = {

            .types = VLC_PREPARSER_TYPE_PARSE | VLC_PREPARSER_TYPE_FETCHMETA_ALL,

            .max_parser_threads = max_threads,

            .timeout = default_timeout,

        };

        parser = instance->parser =

            vlc_preparser_New(VLC_OBJECT(instance->p_libvlc_int), &cfg);

    }

    vlc_mutex_unlock(&instance->lazy_init_lock);

    return parser;

}

vlc_preparser_t *libvlc_get_thumbnailer(libvlc_instance_t *instance)

{

    vlc_mutex_lock(&instance->lazy_init_lock);

    vlc_preparser_t *thumb = instance->thumbnailer;

    if (thumb == NULL)

    {

        const struct vlc_preparser_cfg cfg = {

            .types = VLC_PREPARSER_TYPE_THUMBNAIL,

            .timeout = 0,

        };

        thumb = instance->thumbnailer =

            vlc_preparser_New(VLC_OBJECT(instance->p_libvlc_int), &cfg);

    }

    vlc_mutex_unlock(&instance->lazy_init_lock);

    return thumb;

}

const char vlc_module_name[] = "libvlc";