mirror of https://code.videolan.org/videolan/vlc
283 lines
8.3 KiB
C
283 lines
8.3 KiB
C
/*****************************************************************************
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* renderer_discoverer.c: libvlc renderer API
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*****************************************************************************
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* Copyright © 2016 VLC authors and VideoLAN
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <vlc/libvlc.h>
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#include <vlc/libvlc_renderer_discoverer.h>
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#include <vlc_common.h>
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#include <vlc_arrays.h>
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#include "libvlc_internal.h"
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#include "renderer_discoverer_internal.h"
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struct libvlc_renderer_discoverer_t
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{
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libvlc_event_manager_t event_manager;
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vlc_object_t * p_object;
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vlc_renderer_discovery_t *p_rd;
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int i_items;
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vlc_renderer_item_t ** pp_items;
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char name[];
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};
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static_assert( VLC_RENDERER_CAN_AUDIO == LIBVLC_RENDERER_CAN_AUDIO &&
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VLC_RENDERER_CAN_VIDEO == LIBVLC_RENDERER_CAN_VIDEO,
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"core/libvlc renderer flags mismatch" );
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vlc_renderer_item_t *
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libvlc_renderer_item_to_vlc( libvlc_renderer_item_t *p_item )
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{
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return (vlc_renderer_item_t*) p_item;
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}
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static void renderer_discovery_item_added( vlc_renderer_discovery_t *rd,
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vlc_renderer_item_t *p_item )
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{
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libvlc_renderer_discoverer_t *p_lrd = rd->owner.sys;
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vlc_renderer_item_hold( p_item );
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TAB_APPEND( p_lrd->i_items, p_lrd->pp_items, p_item );
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libvlc_event_t event = {
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.type = libvlc_RendererDiscovererItemAdded,
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.u.renderer_discoverer_item_added.item =
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(libvlc_renderer_item_t*) p_item,
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};
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libvlc_event_send( &p_lrd->event_manager, &event );
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}
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static void renderer_discovery_item_removed( vlc_renderer_discovery_t *rd,
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vlc_renderer_item_t *p_item )
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{
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libvlc_renderer_discoverer_t *p_lrd = rd->owner.sys;
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int i_idx;
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TAB_FIND( p_lrd->i_items, p_lrd->pp_items, p_item, i_idx );
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assert( i_idx != -1 );
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TAB_ERASE( p_lrd->i_items, p_lrd->pp_items, i_idx );
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libvlc_event_t event = {
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.type = libvlc_RendererDiscovererItemDeleted,
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.u.renderer_discoverer_item_deleted.item =
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(libvlc_renderer_item_t*) p_item,
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};
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libvlc_event_send( &p_lrd->event_manager, &event );
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vlc_renderer_item_release( p_item );
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}
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libvlc_renderer_item_t *
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libvlc_renderer_item_hold(libvlc_renderer_item_t *p_item)
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{
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vlc_renderer_item_hold( (vlc_renderer_item_t *) p_item );
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return p_item;
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}
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void
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libvlc_renderer_item_release(libvlc_renderer_item_t *p_item)
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{
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vlc_renderer_item_release( (vlc_renderer_item_t *) p_item );
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}
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const char *
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libvlc_renderer_item_name( const libvlc_renderer_item_t *p_item )
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{
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return vlc_renderer_item_name( (const vlc_renderer_item_t *) p_item );
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}
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const char *
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libvlc_renderer_item_type( const libvlc_renderer_item_t *p_item )
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{
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return vlc_renderer_item_type( (const vlc_renderer_item_t *) p_item );
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}
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const char *
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libvlc_renderer_item_icon_uri( const libvlc_renderer_item_t *p_item )
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{
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return vlc_renderer_item_icon_uri( (const vlc_renderer_item_t *) p_item );
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}
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int
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libvlc_renderer_item_flags( const libvlc_renderer_item_t *p_item )
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{
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return vlc_renderer_item_flags( (const vlc_renderer_item_t *) p_item );
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}
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libvlc_renderer_discoverer_t *
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libvlc_renderer_discoverer_new( libvlc_instance_t *p_inst,
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const char *psz_name )
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{
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size_t len = strlen( psz_name ) + 1;
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libvlc_renderer_discoverer_t *p_lrd = malloc( sizeof(*p_lrd) + len );
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if( unlikely(p_lrd == NULL) )
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return NULL;
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p_lrd->p_object = VLC_OBJECT(p_inst->p_libvlc_int);
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memcpy( p_lrd->name, psz_name, len );
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TAB_INIT( p_lrd->i_items, p_lrd->pp_items );
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p_lrd->p_rd = NULL;
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libvlc_event_manager_init( &p_lrd->event_manager, p_lrd );
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return p_lrd;
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}
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void
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libvlc_renderer_discoverer_release( libvlc_renderer_discoverer_t *p_lrd )
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{
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libvlc_renderer_discoverer_stop( p_lrd );
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libvlc_event_manager_destroy( &p_lrd->event_manager );
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free( p_lrd );
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}
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int
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libvlc_renderer_discoverer_start( libvlc_renderer_discoverer_t *p_lrd )
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{
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assert( p_lrd->p_rd == NULL );
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struct vlc_renderer_discovery_owner owner =
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{
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p_lrd,
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renderer_discovery_item_added,
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renderer_discovery_item_removed,
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};
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p_lrd->p_rd = vlc_rd_new( p_lrd->p_object, p_lrd->name, &owner );
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return p_lrd->p_rd != NULL ? 0 : -1;
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}
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void
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libvlc_renderer_discoverer_stop( libvlc_renderer_discoverer_t *p_lrd )
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{
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if( p_lrd->p_rd != NULL )
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{
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vlc_rd_release( p_lrd->p_rd );
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p_lrd->p_rd = NULL;
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}
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for( int i = 0; i < p_lrd->i_items; ++i )
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vlc_renderer_item_release( p_lrd->pp_items[i] );
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TAB_CLEAN( p_lrd->i_items, p_lrd->pp_items );
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}
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libvlc_event_manager_t *
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libvlc_renderer_discoverer_event_manager( libvlc_renderer_discoverer_t *p_lrd )
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{
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return &p_lrd->event_manager;
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}
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void
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libvlc_renderer_discoverer_list_release( libvlc_rd_description_t **pp_services,
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size_t i_count )
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{
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if( i_count > 0 )
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{
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for( size_t i = 0; i < i_count; ++i )
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{
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free( pp_services[i]->psz_name );
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free( pp_services[i]->psz_longname );
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}
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free( *pp_services );
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free( pp_services );
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}
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}
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size_t
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libvlc_renderer_discoverer_list_get( libvlc_instance_t *p_inst,
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libvlc_rd_description_t ***ppp_services )
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{
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assert( p_inst != NULL && ppp_services != NULL );
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/* Fetch all rd names, and longnames */
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char **ppsz_names, **ppsz_longnames;
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int i_ret = vlc_rd_get_names( p_inst->p_libvlc_int, &ppsz_names,
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&ppsz_longnames );
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if( i_ret != VLC_SUCCESS )
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{
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*ppp_services = NULL;
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return 0;
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}
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/* Count the number of sd matching our category (i_cat/i_core_cat) */
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size_t i_nb_services = 0;
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char **ppsz_name = ppsz_names;
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for( ; *ppsz_name != NULL; ppsz_name++ )
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i_nb_services++;
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libvlc_rd_description_t **pp_services = NULL,
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*p_services = NULL;
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if( i_nb_services > 0 )
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{
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/* Double alloc here, so that the caller iterates through pointers of
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* struct instead of structs. This allows us to modify the struct
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* without breaking the API. */
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pp_services =
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malloc( i_nb_services
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* sizeof(libvlc_rd_description_t *) );
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p_services =
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malloc( i_nb_services
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* sizeof(libvlc_rd_description_t) );
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if( pp_services == NULL || p_services == NULL )
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{
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free( pp_services );
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free( p_services );
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pp_services = NULL;
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p_services = NULL;
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i_nb_services = 0;
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/* Even if alloc fails, the next loop must be run in order to free
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* names returned by vlc_sd_GetNames */
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}
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}
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/* Fill output pp_services or free unused name, longname */
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char **ppsz_longname = ppsz_longnames;
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unsigned int i_service_idx = 0;
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libvlc_rd_description_t *p_service = p_services;
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for( ppsz_name = ppsz_names; *ppsz_name != NULL; ppsz_name++, ppsz_longname++ )
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{
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if( pp_services != NULL )
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{
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p_service->psz_name = *ppsz_name;
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p_service->psz_longname = *ppsz_longname;
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pp_services[i_service_idx++] = p_service++;
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}
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else
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{
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free( *ppsz_name );
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free( *ppsz_longname );
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}
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}
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free( ppsz_names );
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free( ppsz_longnames );
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*ppp_services = pp_services;
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return i_nb_services;
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}
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