/*****************************************************************************
* objects.c: vlc_object_t handling
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
- * $Id: objects.c,v 1.30 2002/12/06 10:10:39 sam Exp $
+ * Copyright (C) 2004 VideoLAN
+ * $Id$
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
* 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
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
+/**
+ * \file
+ * This file contains the functions to handle the vlc_object_t type
+ */
+
+
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <vlc/vlc.h>
+#include <vlc/input.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h> /* realloc() */
#endif
-#include "stream_control.h"
-#include "input_ext-intf.h"
-#include "input_ext-dec.h"
-
-#include "video.h"
+#include "vlc_video.h"
#include "video_output.h"
#include "audio_output.h"
#include "stream_output.h"
#include "vlc_playlist.h"
-#include "interface.h"
+#include "vlc_interface.h"
+#include "vlc_codec.h"
+#include "vlc_httpd.h"
+#include "vlc_vlm.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
-static int DumpCommand( vlc_object_t *, char *, char * );
+static int DumpCommand( vlc_object_t *, char const *,
+ vlc_value_t, vlc_value_t, void * );
static vlc_object_t * FindObject ( vlc_object_t *, int, int );
static void DetachObject ( vlc_object_t * );
static int FindIndex ( vlc_object_t *, vlc_object_t **, int );
static void SetAttachment ( vlc_object_t *, vlc_bool_t );
-static vlc_list_t * NewList ( void );
-static vlc_list_t * ListAppend ( vlc_list_t *, vlc_object_t * );
+static vlc_list_t * NewList ( int );
+static void ListReplace ( vlc_list_t *, vlc_object_t *, int );
+static void ListAppend ( vlc_list_t *, vlc_object_t * );
+static int CountChildren ( vlc_object_t *, int );
+static void ListChildren ( vlc_list_t *, vlc_object_t *, int );
/*****************************************************************************
* Local structure lock
* i_type is not a known value such as VLC_OBJECT_ROOT, VLC_OBJECT_VOUT and
* so on, vlc_object_create will use its value for the object size.
*****************************************************************************/
+
+/**
+ * Initialize a vlc object
+ *
+ * This function allocates memory for a vlc object and initializes it. If
+ * i_type is not a known value such as VLC_OBJECT_ROOT, VLC_OBJECT_VOUT and
+ * so on, vlc_object_create will use its value for the object size.
+ */
void * __vlc_object_create( vlc_object_t *p_this, int i_type )
{
vlc_object_t * p_new;
i_size = sizeof(intf_thread_t);
psz_type = "interface";
break;
+ case VLC_OBJECT_DIALOGS:
+ i_size = sizeof(intf_thread_t);
+ psz_type = "dialogs provider";
+ break;
case VLC_OBJECT_PLAYLIST:
i_size = sizeof(playlist_t);
psz_type = "playlist";
i_size = sizeof(input_thread_t);
psz_type = "input";
break;
+ case VLC_OBJECT_DEMUX:
+ i_size = sizeof(demux_t);
+ psz_type = "demux";
+ break;
+ case VLC_OBJECT_STREAM:
+ i_size = sizeof(stream_t);
+ psz_type = "stream";
+ break;
+ case VLC_OBJECT_ACCESS:
+ i_size = sizeof(access_t);
+ psz_type = "access";
+ break;
case VLC_OBJECT_DECODER:
- i_size = sizeof(decoder_fifo_t);
+ i_size = sizeof(decoder_t);
psz_type = "decoder";
break;
+ case VLC_OBJECT_PACKETIZER:
+ i_size = sizeof(decoder_t);
+ psz_type = "packetizer";
+ break;
+ case VLC_OBJECT_ENCODER:
+ i_size = sizeof(encoder_t);
+ psz_type = "encoder";
+ break;
case VLC_OBJECT_VOUT:
i_size = sizeof(vout_thread_t);
psz_type = "video output";
i_size = sizeof(sout_instance_t);
psz_type = "stream output";
break;
+ case VLC_OBJECT_HTTPD:
+ i_size = sizeof( httpd_t );
+ psz_type = "http daemon";
+ break;
+ case VLC_OBJECT_VLM:
+ i_size = sizeof( vlm_t );
+ psz_type = "vlm dameon";
+ break;
+ case VLC_OBJECT_OPENGL:
+ i_size = sizeof( vout_thread_t );
+ psz_type = "opengl provider";
+ break;
+ case VLC_OBJECT_ANNOUNCE:
+ i_size = sizeof( announce_handler_t );
+ psz_type = "announce handler";
+ break;
default:
i_size = i_type > 0
? i_type > (int)sizeof(vlc_object_t)
p_new->b_error = VLC_FALSE;
p_new->b_dead = VLC_FALSE;
p_new->b_attached = VLC_FALSE;
+ p_new->b_force = VLC_FALSE;
p_new->i_vars = 0;
p_new->p_vars = (variable_t *)malloc( 16 * sizeof( variable_t ) );
if( i_type == VLC_OBJECT_ROOT )
{
- vlc_value_t val;
- val.p_address = DumpCommand;
-
vlc_mutex_init( p_new, &structure_lock );
- var_Create( p_new, "list", VLC_VAR_COMMAND );
- var_Set( p_new, "list", val );
- var_Create( p_new, "tree", VLC_VAR_COMMAND );
- var_Set( p_new, "tree", val );
+ var_Create( p_new, "list", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
+ var_AddCallback( p_new, "list", DumpCommand, NULL );
+ var_Create( p_new, "tree", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
+ var_AddCallback( p_new, "tree", DumpCommand, NULL );
}
return p_new;
}
-/*****************************************************************************
- * vlc_object_destroy: destroy a vlc object
- *****************************************************************************
+/**
+ ****************************************************************************
+ * Destroy a vlc object
+ *
* This function destroys an object that has been previously allocated with
* vlc_object_create. The object's refcount must be zero and it must not be
* attached to other objects in any way.
if( p_this->i_children )
{
- msg_Err( p_this, "cannot delete object with children" );
+ msg_Err( p_this, "cannot delete object (%i, %s) with children" ,
+ p_this->i_object_id, p_this->psz_object_name );
return;
}
if( p_this->p_parent )
{
- msg_Err( p_this, "cannot delete object with a parent" );
+ msg_Err( p_this, "cannot delete object (%i, %s) with a parent",
+ p_this->i_object_id, p_this->psz_object_name );
return;
}
free( p_this );
}
-/*****************************************************************************
- * vlc_object_get: find an object given its ID
- *****************************************************************************
+/**
+ * find an object given its ID
+ *
* This function looks for the object whose i_object_id field is i_id. We
* use a dichotomy so that lookups are in log2(n).
*****************************************************************************/
if( pp_objects[i_middle+1]->i_object_id == i_id )
{
vlc_mutex_unlock( &structure_lock );
+ pp_objects[i_middle+1]->i_refcount++;
return pp_objects[i_middle+1];
}
break;
else
{
vlc_mutex_unlock( &structure_lock );
+ pp_objects[i_middle]->i_refcount++;
return pp_objects[i_middle];
}
return NULL;
}
-/*****************************************************************************
- * vlc_object_find: find a typed object and increment its refcount
+/**
+ ****************************************************************************
+ * find a typed object and increment its refcount
*****************************************************************************
* This function recursively looks for a given object type. i_mode can be one
* of FIND_PARENT, FIND_CHILD or FIND_ANYWHERE.
/* Otherwise, recursively look for the object */
if( (i_mode & 0x000f) == FIND_ANYWHERE )
{
- p_found = FindObject( VLC_OBJECT(p_this->p_vlc), i_type,
- (i_mode & ~0x000f) | FIND_CHILD );
+ vlc_object_t *p_root = p_this;
+
+ /* Find the root */
+ while( p_root->p_parent != NULL &&
+ p_root != VLC_OBJECT( p_this->p_vlc ) )
+ {
+ p_root = p_root->p_parent;
+ }
+
+ p_found = FindObject( p_root, i_type, (i_mode & ~0x000f)|FIND_CHILD );
+ if( p_found == NULL && p_root != VLC_OBJECT( p_this->p_vlc ) )
+ {
+ p_found = FindObject( VLC_OBJECT( p_this->p_vlc ),
+ i_type, (i_mode & ~0x000f)|FIND_CHILD );
+ }
}
else
{
return p_found;
}
-/*****************************************************************************
- * vlc_object_yield: increment an object refcount
+/**
+ ****************************************************************************
+ * increment an object refcount
*****************************************************************************/
void __vlc_object_yield( vlc_object_t *p_this )
{
vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_object_release: decrement an object refcount
+/**
+ ****************************************************************************
+ * decrement an object refcount
*****************************************************************************/
void __vlc_object_release( vlc_object_t *p_this )
{
vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_object_attach: attach object to a parent object
+/**
+ ****************************************************************************
+ * attach object to a parent object
*****************************************************************************
* This function sets p_this as a child of p_parent, and p_parent as a parent
* of p_this. This link can be undone using vlc_object_detach.
vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_object_detach: detach object from its parent
+/**
+ ****************************************************************************
+ * detach object from its parent
*****************************************************************************
* This function removes all links between an object and its parent.
*****************************************************************************/
vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_list_find: find a list typed objects and increment their refcount
+/**
+ ****************************************************************************
+ * find a list typed objects and increment their refcount
*****************************************************************************
* This function recursively looks for a given object type. i_mode can be one
* of FIND_PARENT, FIND_CHILD or FIND_ANYWHERE.
*****************************************************************************/
vlc_list_t * __vlc_list_find( vlc_object_t *p_this, int i_type, int i_mode )
{
- vlc_list_t *p_list = NewList();
+ vlc_list_t *p_list;
+ vlc_object_t **pp_current, **pp_end;
+ int i_count = 0, i_index = 0;
vlc_mutex_lock( &structure_lock );
/* Look for the objects */
- if( (i_mode & 0x000f) == FIND_ANYWHERE )
+ switch( i_mode & 0x000f )
{
- vlc_object_t **pp_current, **pp_end;
-
+ case FIND_ANYWHERE:
pp_current = p_this->p_libvlc->pp_objects;
pp_end = pp_current + p_this->p_libvlc->i_objects;
if( (*pp_current)->b_attached
&& (*pp_current)->i_object_type == i_type )
{
- p_list = ListAppend( p_list, *pp_current );
+ i_count++;
}
}
- }
- else
- {
+
+ p_list = NewList( i_count );
+ pp_current = p_this->p_libvlc->pp_objects;
+
+ for( ; pp_current < pp_end ; pp_current++ )
+ {
+ if( (*pp_current)->b_attached
+ && (*pp_current)->i_object_type == i_type )
+ {
+ ListReplace( p_list, *pp_current, i_index );
+ if( i_index < i_count ) i_index++;
+ }
+ }
+ break;
+
+ case FIND_CHILD:
+ i_count = CountChildren( p_this, i_type );
+ p_list = NewList( i_count );
+
+ /* Check allocation was successful */
+ if( p_list->i_count != i_count )
+ {
+ msg_Err( p_this, "list allocation failed!" );
+ p_list->i_count = 0;
+ break;
+ }
+
+ p_list->i_count = 0;
+ ListChildren( p_list, p_this, i_type );
+ break;
+
+ default:
msg_Err( p_this, "unimplemented!" );
+ p_list = NewList( 0 );
+ break;
}
vlc_mutex_unlock( &structure_lock );
* vlc objects, and additional information such as their refcount, thread ID,
* etc. (command "tree"), or the same data as a simple list (command "list").
*****************************************************************************/
-static int DumpCommand( vlc_object_t *p_this, char *psz_cmd, char *psz_arg )
+static int DumpCommand( vlc_object_t *p_this, char const *psz_cmd,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
if( *psz_cmd == 't' )
{
char psz_foo[2 * MAX_DUMPSTRUCTURE_DEPTH + 1];
vlc_object_t *p_object;
- if( *psz_arg )
+ if( *newval.psz_string )
{
- p_object = vlc_object_get( p_this, atoi(psz_arg) );
+ p_object = vlc_object_get( p_this, atoi(newval.psz_string) );
if( !p_object )
{
DumpStructure( p_object, 0, psz_foo );
vlc_mutex_unlock( &structure_lock );
+
+ if( *newval.psz_string )
+ {
+ vlc_object_release( p_this );
+ }
}
else if( *psz_cmd == 'l' )
{
*****************************************************************************/
void vlc_list_release( vlc_list_t *p_list )
{
- if( p_list->i_count )
- {
- vlc_object_t ** pp_current = p_list->pp_objects;
+ int i_index;
+ for( i_index = 0; i_index < p_list->i_count; i_index++ )
+ {
vlc_mutex_lock( &structure_lock );
- while( pp_current[0] )
- {
- pp_current[0]->i_refcount--;
- pp_current++;
- }
+ p_list->p_values[i_index].p_object->i_refcount--;
vlc_mutex_unlock( &structure_lock );
}
+ free( p_list->p_values );
free( p_list );
}
}
}
-static vlc_list_t * NewList( void )
+static vlc_list_t * NewList( int i_count )
{
- vlc_list_t *p_list = malloc( sizeof( vlc_list_t )
- + 3 * sizeof( vlc_object_t * ) );
-
+ vlc_list_t * p_list = (vlc_list_t *)malloc( sizeof( vlc_list_t ) );
if( p_list == NULL )
{
return NULL;
}
- p_list->i_count = 0;
- p_list->pp_objects = &p_list->_p_first;
+ p_list->i_count = i_count;
+
+ if( i_count == 0 )
+ {
+ p_list->p_values = NULL;
+ return p_list;
+ }
- /* We allocated space for NULL and for three extra objects */
- p_list->_i_extra = 3;
- p_list->_p_first = NULL;
+ p_list->p_values = malloc( i_count * sizeof( vlc_value_t ) );
+ if( p_list->p_values == NULL )
+ {
+ p_list->i_count = 0;
+ return p_list;
+ }
return p_list;
}
-static vlc_list_t * ListAppend( vlc_list_t *p_list, vlc_object_t *p_object )
+static void ListReplace( vlc_list_t *p_list, vlc_object_t *p_object,
+ int i_index )
{
- if( p_list == NULL )
+ if( p_list == NULL || i_index >= p_list->i_count )
{
- return NULL;
+ return;
}
- if( p_list->_i_extra == 0 )
+ p_object->i_refcount++;
+
+ p_list->p_values[i_index].p_object = p_object;
+
+ return;
+}
+
+static void ListAppend( vlc_list_t *p_list, vlc_object_t *p_object )
+{
+ if( p_list == NULL )
{
- /* If we had X objects it means the array has a size of X+1, we
- * make it size 2X+2, so we alloc 2X+1 because there is already
- * one allocated in the real structure */
- p_list = realloc( p_list, sizeof( vlc_list_t )
- + (p_list->i_count * 2 + 1)
- * sizeof( vlc_object_t * ) );
- if( p_list == NULL )
- {
- return NULL;
- }
+ return;
+ }
- /* We have X+1 extra slots */
- p_list->_i_extra = p_list->i_count + 1;
- p_list->pp_objects = &p_list->_p_first;
+ p_list->p_values = realloc( p_list->p_values, (p_list->i_count + 1)
+ * sizeof( vlc_value_t ) );
+ if( p_list->p_values == NULL )
+ {
+ p_list->i_count = 0;
+ return;
}
p_object->i_refcount++;
- p_list->pp_objects[p_list->i_count] = p_object;
+ p_list->p_values[p_list->i_count].p_object = p_object;
p_list->i_count++;
- p_list->pp_objects[p_list->i_count] = NULL;
- p_list->_i_extra--;
- return p_list;
+ return;
}
+static int CountChildren( vlc_object_t *p_this, int i_type )
+{
+ vlc_object_t *p_tmp;
+ int i, i_count = 0;
+
+ for( i = 0; i < p_this->i_children; i++ )
+ {
+ p_tmp = p_this->pp_children[i];
+
+ if( p_tmp->i_object_type == i_type )
+ {
+ i_count++;
+ }
+
+ if( p_tmp->i_children )
+ {
+ i_count += CountChildren( p_tmp, i_type );
+ }
+ }
+
+ return i_count;
+}
+
+static void ListChildren( vlc_list_t *p_list, vlc_object_t *p_this, int i_type )
+{
+ vlc_object_t *p_tmp;
+ int i;
+
+ for( i = 0; i < p_this->i_children; i++ )
+ {
+ p_tmp = p_this->pp_children[i];
+
+ if( p_tmp->i_object_type == i_type )
+ {
+ ListReplace( p_list, p_tmp, p_list->i_count++ );
+ }
+
+ if( p_tmp->i_children )
+ {
+ ListChildren( p_list, p_tmp, i_type );
+ }
+ }
+}
projects / vlc / blobdiff