/**
* This function preparses an item when needed.
*/
static void Preparse( playlist_preparser_t *preparser, input_item_t *p_item,
input_item_meta_request_option_t i_options )
{
vlc_mutex_lock( &p_item->lock );
int i_type = p_item->i_type;
bool b_net = p_item->b_net;
vlc_mutex_unlock( &p_item->lock );
bool b_preparse = false;
switch (i_type) {
case ITEM_TYPE_FILE:
case ITEM_TYPE_DIRECTORY:
case ITEM_TYPE_PLAYLIST:
case ITEM_TYPE_NODE:
if (!b_net || i_options & META_REQUEST_OPTION_SCOPE_NETWORK)
b_preparse = true;
break;
}
/* Do not preparse if it is already done (like by playing it) */
if( b_preparse && !input_item_IsPreparsed( p_item ) )
{
input_thread_t *input = input_CreatePreparser( preparser->object,
p_item );
if( input == NULL )
return;
var_AddCallback( input, "intf-event", InputEvent,
&preparser->item_done );
if( input_Start( input ) == VLC_SUCCESS )
vlc_sem_wait( &preparser->item_done );
var_DelCallback( input, "intf-event", InputEvent,
&preparser->item_done );
/* Normally, the input is already stopped since we waited for it. But
* if the playlist preparser is being deleted, then the input might
* still be running. Force it to stop. */
input_Stop( input );
input_Close( input );
var_SetAddress( preparser->object, "item-change", p_item );
}
input_item_SetPreparsed( p_item, true );
input_item_SignalPreparseEnded( p_item );
}
static int PreparserOpenInput( void* preparser_, void* req_, void** out )
{
input_preparser_t* preparser = preparser_;
input_preparser_req_t *req = req_;
input_preparser_task_t* task = malloc( sizeof *task );
if( unlikely( !task ) )
goto error;
atomic_init( &task->state, INIT_S );
atomic_init( &task->done, false );
task->preparser = preparser_;
task->input = input_CreatePreparser( preparser->owner, InputEvent,
task, req->item );
if( !task->input )
goto error;
task->req = req;
task->preparse_status = -1;
if( input_Start( task->input ) )
{
input_Close( task->input );
goto error;
}
*out = task;
return VLC_SUCCESS;
error:
free( task );
if (req->cbs && req->cbs->on_preparse_ended)
req->cbs->on_preparse_ended(req->item, ITEM_PREPARSE_FAILED, req->userdata);
return VLC_EGENERIC;
}