/*****************************************************************************
- * preparse.c: Preparser thread.
+ * fetcher.c: Art fetcher thread.
*****************************************************************************
* Copyright © 1999-2009 the VideoLAN team
* $Id$
# include "config.h"
#endif
+#include <assert.h>
+
#include <vlc_common.h>
#include <vlc_playlist.h>
+#include <vlc_stream.h>
+#include <limits.h>
+#include <vlc_art_finder.h>
+#include <vlc_memory.h>
+#include <vlc_demux.h>
+#include <vlc_modules.h>
#include "art.h"
#include "fetcher.h"
#include "playlist_internal.h"
+/*****************************************************************************
+ * Structures/definitions
+ *****************************************************************************/
+struct playlist_fetcher_t
+{
+ playlist_t *p_playlist;
+
+ vlc_mutex_t lock;
+ vlc_cond_t wait;
+ bool b_live;
+ int i_art_policy;
+ int i_waiting;
+ input_item_t **pp_waiting;
+
+ DECL_ARRAY(playlist_album_t) albums;
+};
+
static void *Thread( void * );
+
+/*****************************************************************************
+ * Public functions
+ *****************************************************************************/
playlist_fetcher_t *playlist_fetcher_New( playlist_t *p_playlist )
{
- // Secondary Preparse
playlist_fetcher_t *p_fetcher = malloc( sizeof(*p_fetcher) );
if( !p_fetcher )
return NULL;
p_fetcher->p_playlist = p_playlist;
vlc_mutex_init( &p_fetcher->lock );
vlc_cond_init( &p_fetcher->wait );
+ p_fetcher->b_live = false;
p_fetcher->i_waiting = 0;
p_fetcher->pp_waiting = NULL;
- p_fetcher->i_art_policy = var_CreateGetInteger( p_playlist, "album-art" );
+ p_fetcher->i_art_policy = var_GetInteger( p_playlist, "album-art" );
ARRAY_INIT( p_fetcher->albums );
- if( vlc_clone( &p_fetcher->thread, Thread, p_fetcher,
- VLC_THREAD_PRIORITY_LOW ) )
- {
- msg_Err( p_playlist, "cannot spawn secondary preparse thread" );
- free( p_fetcher );
- return NULL;
- }
-
return p_fetcher;
}
-void playlist_fetcher_Push( playlist_fetcher_t *p_fetcher, input_item_t *p_item )
+void playlist_fetcher_Push( playlist_fetcher_t *p_fetcher,
+ input_item_t *p_item )
{
vlc_gc_incref( p_item );
vlc_mutex_lock( &p_fetcher->lock );
INSERT_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting,
p_fetcher->i_waiting, p_item );
- vlc_cond_signal( &p_fetcher->wait );
+ if( !p_fetcher->b_live )
+ {
+ vlc_thread_t th;
+
+ if( vlc_clone( &th, Thread, p_fetcher, VLC_THREAD_PRIORITY_LOW ) )
+ msg_Err( p_fetcher->p_playlist,
+ "cannot spawn secondary preparse thread" );
+ else
+ {
+ vlc_detach( th );
+ p_fetcher->b_live = true;
+ }
+ }
vlc_mutex_unlock( &p_fetcher->lock );
}
void playlist_fetcher_Delete( playlist_fetcher_t *p_fetcher )
{
- /* Destroy the item meta-infos fetcher */
- vlc_cancel( p_fetcher->thread );
- vlc_join( p_fetcher->thread, NULL );
-
+ vlc_mutex_lock( &p_fetcher->lock );
+ /* Remove any left-over item, the fetcher will exit */
while( p_fetcher->i_waiting > 0 )
- { /* Any left-over unparsed item? */
+ {
vlc_gc_decref( p_fetcher->pp_waiting[0] );
REMOVE_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting, 0 );
}
+
+ while( p_fetcher->b_live )
+ vlc_cond_wait( &p_fetcher->wait, &p_fetcher->lock );
+ vlc_mutex_unlock( &p_fetcher->lock );
+
vlc_cond_destroy( &p_fetcher->wait );
vlc_mutex_destroy( &p_fetcher->lock );
free( p_fetcher );
}
+
+/*****************************************************************************
+ * Privates functions
+ *****************************************************************************/
/**
* This function locates the art associated to an input item.
* Return codes:
*/
static int FindArt( playlist_fetcher_t *p_fetcher, input_item_t *p_item )
{
- playlist_t *p_playlist = p_fetcher->p_playlist;
- int i_ret = VLC_EGENERIC;
- module_t *p_module;
- char *psz_title, *psz_artist, *psz_album;
+ int i_ret;
- psz_artist = input_item_GetArtist( p_item );
- psz_album = input_item_GetAlbum( p_item );
- psz_title = input_item_GetTitle( p_item );
+ char *psz_artist = input_item_GetArtist( p_item );
+ char *psz_album = input_item_GetAlbum( p_item );
+ char *psz_title = input_item_GetTitle( p_item );
if( !psz_title )
psz_title = input_item_GetName( p_item );
if( !strcmp( album.psz_artist, psz_artist ) &&
!strcmp( album.psz_album, psz_album ) )
{
- msg_Dbg( p_playlist, " %s - %s has already been searched",
+ msg_Dbg( p_fetcher->p_playlist,
+ " %s - %s has already been searched",
psz_artist, psz_album );
/* TODO-fenrir if we cache art filename too, we can go faster */
free( psz_artist );
return 1;
}
- PL_LOCK;
- p_playlist->p_private = p_item;
+ /* */
psz_album = input_item_GetAlbum( p_item );
psz_artist = input_item_GetArtist( p_item );
- psz_title = input_item_GetTitle( p_item );
- if( !psz_title )
- psz_title = input_item_GetName( p_item );
-
if( psz_album && psz_artist )
{
- msg_Dbg( p_playlist, "searching art for %s - %s",
+ msg_Dbg( p_fetcher->p_playlist, "searching art for %s - %s",
psz_artist, psz_album );
}
else
{
- msg_Dbg( p_playlist, "searching art for %s",
- psz_title );
+ psz_title = input_item_GetTitle( p_item );
+ if( !psz_title )
+ psz_title = input_item_GetName( p_item );
+
+ msg_Dbg( p_fetcher->p_playlist, "searching art for %s", psz_title );
+ free( psz_title );
}
- free( psz_title );
- p_module = module_need( p_playlist, "art finder", NULL, false );
+ /* Fetch the art url */
+ i_ret = VLC_EGENERIC;
- if( p_module )
- i_ret = 1;
- else
- msg_Dbg( p_playlist, "unable to find art" );
+ vlc_object_t *p_parent = VLC_OBJECT(p_fetcher->p_playlist);
+ art_finder_t *p_finder =
+ vlc_custom_create( p_parent, sizeof( *p_finder ), VLC_OBJECT_GENERIC,
+ "art finder" );
+ if( p_finder != NULL)
+ {
+ module_t *p_module;
+
+ vlc_object_attach( p_finder, p_parent );
+ p_finder->p_item = p_item;
+
+ p_module = module_need( p_finder, "art finder", NULL, false );
+ if( p_module )
+ {
+ module_unneed( p_finder, p_module );
+ /* Try immediately if found in cache by download URL */
+ if( !playlist_FindArtInCache( p_item ) )
+ i_ret = 0;
+ else
+ i_ret = 1;
+ }
+ vlc_object_release( p_finder );
+ }
/* Record this album */
if( psz_artist && psz_album )
free( psz_album );
}
- if( p_module )
- module_unneed( p_playlist, p_module );
- p_playlist->p_private = NULL;
- PL_UNLOCK;
-
return i_ret;
}
+/**
+ * Download the art using the URL or an art downloaded
+ * This function should be called only if data is not already in cache
+ */
+static int DownloadArt( playlist_fetcher_t *p_fetcher, input_item_t *p_item )
+{
+ char *psz_arturl = input_item_GetArtURL( p_item );
+ assert( *psz_arturl );
+
+ if( !strncmp( psz_arturl , "file://", 7 ) )
+ {
+ msg_Dbg( p_fetcher->p_playlist,
+ "Album art is local file, no need to cache" );
+ free( psz_arturl );
+ return VLC_SUCCESS;
+ }
+
+ if( !strncmp( psz_arturl , "APIC", 4 ) )
+ {
+ msg_Warn( p_fetcher->p_playlist, "APIC fetch not supported yet" );
+ goto error;
+ }
+
+ stream_t *p_stream = stream_UrlNew( p_fetcher->p_playlist, psz_arturl );
+ if( !p_stream )
+ goto error;
+
+ uint8_t *p_data = NULL;
+ int i_data = 0;
+ for( ;; )
+ {
+ int i_read = 65536;
+
+ if( i_data >= INT_MAX - i_read )
+ break;
+
+ p_data = realloc_or_free( p_data, i_data + i_read );
+ if( !p_data )
+ break;
+
+ i_read = stream_Read( p_stream, &p_data[i_data], i_read );
+ if( i_read <= 0 )
+ break;
+
+ i_data += i_read;
+ }
+ stream_Delete( p_stream );
+
+ if( p_data && i_data > 0 )
+ {
+ char *psz_type = strrchr( psz_arturl, '.' );
+ if( psz_type && strlen( psz_type ) > 5 )
+ psz_type = NULL; /* remove extension if it's > to 4 characters */
+
+ playlist_SaveArt( p_fetcher->p_playlist, p_item, p_data, i_data, psz_type );
+ }
+
+ free( p_data );
+
+ free( psz_arturl );
+ return VLC_SUCCESS;
+
+error:
+ free( psz_arturl );
+ return VLC_EGENERIC;
+}
+
+/**
+ * FetchMeta, run the "meta fetcher". They are going to do network
+ * connections, and gather information upon the playing media.
+ * (even artwork).
+ */
+static void FetchMeta( playlist_fetcher_t *p_fetcher, input_item_t *p_item )
+{
+ demux_meta_t *p_demux_meta = vlc_custom_create(p_fetcher->p_playlist,
+ sizeof(*p_demux_meta),
+ VLC_OBJECT_GENERIC, "demux meta" );
+ if( !p_demux_meta )
+ return;
+
+ vlc_object_attach( p_demux_meta, p_fetcher->p_playlist );
+ p_demux_meta->p_demux = NULL;
+ p_demux_meta->p_item = p_item;
+
+ module_t *p_meta_fetcher = module_need( p_demux_meta, "meta fetcher", NULL, false );
+ if( p_meta_fetcher )
+ module_unneed( p_demux_meta, p_meta_fetcher );
+ vlc_object_release( p_demux_meta );
+}
+
+static int InputEvent( vlc_object_t *p_this, char const *psz_cmd,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
+ vlc_cond_t *p_cond = p_data;
+
+ if( newval.i_int == INPUT_EVENT_ITEM_META ||
+ newval.i_int == INPUT_EVENT_DEAD )
+ vlc_cond_signal( p_cond );
+
+ return VLC_SUCCESS;
+}
+
+
+/* Check if it is not yet preparsed and if so wait for it
+ * (at most 0.5s)
+ * (This can happen if we fetch art on play)
+ * FIXME this doesn't work if we need to fetch meta before art...
+ */
+static void WaitPreparsed( playlist_fetcher_t *p_fetcher, input_item_t *p_item )
+{
+ if( input_item_IsPreparsed( p_item ) )
+ return;
+
+ input_thread_t *p_input = playlist_CurrentInput( p_fetcher->p_playlist );
+ if( !p_input )
+ return;
+
+ if( input_GetItem( p_input ) != p_item )
+ goto exit;
+
+ vlc_cond_t cond;
+ vlc_cond_init( &cond );
+ var_AddCallback( p_input, "intf-event", InputEvent, &cond );
+
+ const mtime_t i_deadline = mdate() + 500*1000;
+ bool b_timeout = false;
+
+ while( !p_input->b_eof && !p_input->b_error
+ && !input_item_IsPreparsed( p_item ) && !b_timeout )
+ {
+ /* A bit weird, but input_item_IsPreparsed holds the protected value */
+ /* FIXME: locking looks wrong here */
+ vlc_mutex_lock( &p_fetcher->lock );
+ if( vlc_cond_timedwait( &cond, &p_fetcher->lock, i_deadline ) )
+ b_timeout = true;
+ vlc_mutex_unlock( &p_fetcher->lock );
+ }
+
+ var_DelCallback( p_input, "intf-event", InputEvent, &cond );
+ vlc_cond_destroy( &cond );
+
+exit:
+ vlc_object_release( p_input );
+}
static void *Thread( void *p_data )
{
playlist_fetcher_t *p_fetcher = p_data;
playlist_t *p_playlist = p_fetcher->p_playlist;
- playlist_private_t *p_sys = pl_priv( p_playlist );
for( ;; )
{
- input_item_t *p_item;
+ input_item_t *p_item = NULL;
- /* */
vlc_mutex_lock( &p_fetcher->lock );
- mutex_cleanup_push( &p_fetcher->lock );
+ if( p_fetcher->i_waiting != 0 )
+ {
+ p_item = p_fetcher->pp_waiting[0];
+ REMOVE_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting, 0 );
+ }
+ else
+ {
+ p_fetcher->b_live = false;
+ vlc_cond_signal( &p_fetcher->wait );
+ }
+ vlc_mutex_unlock( &p_fetcher->lock );
- while( p_fetcher->i_waiting == 0 )
- vlc_cond_wait( &p_fetcher->wait, &p_fetcher->lock );
+ if( !p_item )
+ break;
- p_item = p_fetcher->pp_waiting[0];
- REMOVE_ELEM( p_fetcher->pp_waiting, p_fetcher->i_waiting, 0 );
- vlc_cleanup_run( );
+ /* */
- if( !p_item )
- continue;
+ /* Wait that the input item is preparsed if it is being played */
+ WaitPreparsed( p_fetcher, p_item );
+
+ /* Triggers "meta fetcher", eventually fetch meta on the network.
+ * They are identical to "meta reader" expect that may actually
+ * takes time. That's why they are running here.
+ * The result of this fetch is not cached. */
+ FetchMeta( p_fetcher, p_item );
+
+ /* Find art, and download it if needed */
+ int i_ret = FindArt( p_fetcher, p_item );
+ if( i_ret == 1 )
+ i_ret = DownloadArt( p_fetcher, p_item );
/* */
- int canc = vlc_savecancel();
+ char *psz_name = input_item_GetName( p_item );
+ if( !i_ret ) /* Art is now in cache */
{
- int i_ret;
-
- /* Check if it is not yet preparsed and if so wait for it
- * (at most 0.5s)
- * (This can happen if we fetch art on play)
- * FIXME this doesn't work if we need to fetch meta before art...
- */
- for( i_ret = 0; i_ret < 10 && !input_item_IsPreparsed( p_item ); i_ret++ )
- {
- bool b_break;
- PL_LOCK;
- b_break = ( !p_sys->p_input || input_GetItem(p_sys->p_input) != p_item ||
- p_sys->p_input->b_die || p_sys->p_input->b_eof || p_sys->p_input->b_error );
- PL_UNLOCK;
- if( b_break )
- break;
- msleep( 50000 );
- }
-
- i_ret = FindArt( p_fetcher, p_item );
- if( i_ret == 1 )
- {
- PL_DEBUG( "downloading art for %s", p_item->psz_name );
- if( playlist_DownloadArt( p_playlist, p_item ) )
- input_item_SetArtNotFound( p_item, true );
- else {
- input_item_SetArtFetched( p_item, true );
- var_SetInteger( p_playlist, "item-change",
- p_item->i_id );
- }
- }
- else if( i_ret == 0 ) /* Was in cache */
- {
- PL_DEBUG( "found art for %s in cache", p_item->psz_name );
- input_item_SetArtFetched( p_item, true );
- var_SetInteger( p_playlist, "item-change", p_item->i_id );
- }
- else
- {
- PL_DEBUG( "art not found for %s", p_item->psz_name );
- input_item_SetArtNotFound( p_item, true );
- }
- vlc_gc_decref( p_item );
+ PL_DEBUG( "found art for %s in cache", psz_name );
+ input_item_SetArtFetched( p_item, true );
+ var_SetAddress( p_playlist, "item-change", p_item );
}
- vlc_restorecancel( canc );
-
- int i_activity = var_GetInteger( p_playlist, "activity" );
- if( i_activity < 0 ) i_activity = 0;
- /* Sleep at least 1ms */
- msleep( (i_activity+1) * 1000 );
+ else
+ {
+ PL_DEBUG( "art not found for %s", psz_name );
+ input_item_SetArtNotFound( p_item, true );
+ }
+ free( psz_name );
+ vlc_gc_decref( p_item );
}
return NULL;
}
-
-
projects / vlc / blobdiff