home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
MacAddict 83
/
MacAddict_083_2003-07.iso
/
mac
/
Software
/
Development
/
VLC Source 0.5.3.dmg
/
src
/
misc
/
objects.c
< prev
next >
Wrap
C/C++ Source or Header
|
2003-04-07
|
30KB
|
998 lines
/*****************************************************************************
* objects.c: vlc_object_t handling
*****************************************************************************
* Copyright (C) 2002 VideoLAN
* $Id: objects.c,v 1.35 2003/02/23 19:07:02 fenrir Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
* This program is free software; you can redistribute it and/or modify
* 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <vlc/vlc.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 "video_output.h"
#include "audio_output.h"
#include "aout_internal.h"
#include "stream_output.h"
#include "vlc_playlist.h"
#include "interface.h"
#include "httpd.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
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 void PrintObject ( vlc_object_t *, const char * );
static void DumpStructure ( vlc_object_t *, int, char * );
static int FindIndex ( vlc_object_t *, vlc_object_t **, int );
static void SetAttachment ( vlc_object_t *, vlc_bool_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
*****************************************************************************/
static vlc_mutex_t structure_lock;
/*****************************************************************************
* vlc_object_create: 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;
char * psz_type;
size_t i_size;
switch( i_type )
{
case VLC_OBJECT_ROOT:
i_size = sizeof(libvlc_t);
psz_type = "root";
break;
case VLC_OBJECT_VLC:
i_size = sizeof(vlc_t);
psz_type = "vlc";
break;
case VLC_OBJECT_MODULE:
i_size = sizeof(module_t);
psz_type = "module";
break;
case VLC_OBJECT_INTF:
i_size = sizeof(intf_thread_t);
psz_type = "interface";
break;
case VLC_OBJECT_PLAYLIST:
i_size = sizeof(playlist_t);
psz_type = "playlist";
break;
case VLC_OBJECT_INPUT:
i_size = sizeof(input_thread_t);
psz_type = "input";
break;
case VLC_OBJECT_DECODER:
i_size = sizeof(decoder_fifo_t);
psz_type = "decoder";
break;
case VLC_OBJECT_VOUT:
i_size = sizeof(vout_thread_t);
psz_type = "video output";
break;
case VLC_OBJECT_AOUT:
i_size = sizeof(aout_instance_t);
psz_type = "audio output";
break;
case VLC_OBJECT_SOUT:
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;
default:
i_size = i_type > 0
? i_type > (int)sizeof(vlc_object_t)
? i_type : (int)sizeof(vlc_object_t)
: (int)sizeof(vlc_object_t);
i_type = VLC_OBJECT_GENERIC;
psz_type = "generic";
break;
}
if( i_type == VLC_OBJECT_ROOT )
{
p_new = p_this;
}
else
{
p_new = malloc( i_size );
if( !p_new )
{
return NULL;
}
memset( p_new, 0, i_size );
}
p_new->i_object_type = i_type;
p_new->psz_object_type = psz_type;
p_new->psz_object_name = NULL;
p_new->b_die = VLC_FALSE;
p_new->b_error = VLC_FALSE;
p_new->b_dead = VLC_FALSE;
p_new->b_attached = VLC_FALSE;
p_new->i_vars = 0;
p_new->p_vars = (variable_t *)malloc( 16 * sizeof( variable_t ) );
if( !p_new->p_vars )
{
free( p_new );
return NULL;
}
if( i_type == VLC_OBJECT_ROOT )
{
/* If i_type is root, then p_new is actually p_libvlc */
p_new->p_libvlc = (libvlc_t*)p_new;
p_new->p_vlc = NULL;
p_new->p_libvlc->i_counter = 0;
p_new->i_object_id = 0;
p_new->p_libvlc->i_objects = 1;
p_new->p_libvlc->pp_objects = malloc( sizeof(vlc_object_t *) );
p_new->p_libvlc->pp_objects[0] = p_new;
p_new->b_attached = VLC_TRUE;
}
else
{
p_new->p_libvlc = p_this->p_libvlc;
p_new->p_vlc = ( i_type == VLC_OBJECT_VLC ) ? (vlc_t*)p_new
: p_this->p_vlc;
vlc_mutex_lock( &structure_lock );
p_new->p_libvlc->i_counter++;
p_new->i_object_id = p_new->p_libvlc->i_counter;
/* Wooohaa! If *this* fails, we're in serious trouble! Anyway it's
* useless to try and recover anything if pp_objects gets smashed. */
INSERT_ELEM( p_new->p_libvlc->pp_objects,
p_new->p_libvlc->i_objects,
p_new->p_libvlc->i_objects,
p_new );
vlc_mutex_unlock( &structure_lock );
}
p_new->i_refcount = 0;
p_new->p_parent = NULL;
p_new->pp_children = NULL;
p_new->i_children = 0;
p_new->p_private = NULL;
/* Initialize mutexes and condvars */
vlc_mutex_init( p_new, &p_new->object_lock );
vlc_cond_init( p_new, &p_new->object_wait );
vlc_mutex_init( p_new, &p_new->var_lock );
if( i_type == VLC_OBJECT_ROOT )
{
vlc_mutex_init( p_new, &structure_lock );
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
*****************************************************************************
* 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.
*****************************************************************************/
void __vlc_object_destroy( vlc_object_t *p_this )
{
int i_delay = 0;
if( p_this->i_children )
{
msg_Err( p_this, "cannot delete object with children" );
return;
}
if( p_this->p_parent )
{
msg_Err( p_this, "cannot delete object with a parent" );
return;
}
while( p_this->i_refcount )
{
i_delay++;
/* Don't warn immediately ... 100ms seems OK */
if( i_delay == 2 )
{
msg_Warn( p_this, "refcount is %i, delaying before deletion",
p_this->i_refcount );
}
else if( i_delay == 12 )
{
msg_Err( p_this, "refcount is %i, I have a bad feeling about this",
p_this->i_refcount );
}
else if( i_delay == 42 )
{
msg_Err( p_this, "we waited too long, cancelling destruction" );
return;
}
msleep( 100000 );
}
/* Destroy the associated variables, starting from the end so that
* no memmove calls have to be done. */
while( p_this->i_vars )
{
var_Destroy( p_this, p_this->p_vars[p_this->i_vars - 1].psz_name );
}
free( p_this->p_vars );
vlc_mutex_destroy( &p_this->var_lock );
if( p_this->i_object_type == VLC_OBJECT_ROOT )
{
/* We are the root object ... no need to lock. */
free( p_this->p_libvlc->pp_objects );
p_this->p_libvlc->pp_objects = NULL;
p_this->p_libvlc->i_objects--;
vlc_mutex_destroy( &structure_lock );
}
else
{
int i_index;
vlc_mutex_lock( &structure_lock );
/* Wooohaa! If *this* fails, we're in serious trouble! Anyway it's
* useless to try and recover anything if pp_objects gets smashed. */
i_index = FindIndex( p_this, p_this->p_libvlc->pp_objects,
p_this->p_libvlc->i_objects );
REMOVE_ELEM( p_this->p_libvlc->pp_objects,
p_this->p_libvlc->i_objects, i_index );
vlc_mutex_unlock( &structure_lock );
}
vlc_mutex_destroy( &p_this->object_lock );
vlc_cond_destroy( &p_this->object_wait );
free( p_this );
}
/*****************************************************************************
* vlc_object_get: 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).
*****************************************************************************/
void * __vlc_object_get( vlc_object_t *p_this, int i_id )
{
int i_max, i_middle;
vlc_object_t **pp_objects;
vlc_mutex_lock( &structure_lock );
pp_objects = p_this->p_libvlc->pp_objects;
/* Perform our dichotomy */
for( i_max = p_this->p_libvlc->i_objects - 1 ; ; )
{
i_middle = i_max / 2;
if( pp_objects[i_middle]->i_object_id > i_id )
{
i_max = i_middle;
}
else if( pp_objects[i_middle]->i_object_id < i_id )
{
if( i_middle )
{
pp_objects += i_middle;
i_max -= i_middle;
}
else
{
/* This happens when there are only two remaining objects */
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];
}
if( i_max == 0 )
{
/* this means that i_max == i_middle, and since we have already
* tested pp_objects[i_middle]), p_found is properly set. */
break;
}
}
vlc_mutex_unlock( &structure_lock );
return NULL;
}
/*****************************************************************************
* vlc_object_find: 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.
*****************************************************************************/
void * __vlc_object_find( vlc_object_t *p_this, int i_type, int i_mode )
{
vlc_object_t *p_found;
vlc_mutex_lock( &structure_lock );
/* If we are of the requested type ourselves, don't look further */
if( !(i_mode & FIND_STRICT) && p_this->i_object_type == i_type )
{
p_this->i_refcount++;
vlc_mutex_unlock( &structure_lock );
return p_this;
}
/* 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 );
}
else
{
p_found = FindObject( p_this, i_type, i_mode );
}
vlc_mutex_unlock( &structure_lock );
return p_found;
}
/*****************************************************************************
* vlc_object_yield: increment an object refcount
*****************************************************************************/
void __vlc_object_yield( vlc_object_t *p_this )
{
vlc_mutex_lock( &structure_lock );
p_this->i_refcount++;
vlc_mutex_unlock( &structure_lock );
}
/*****************************************************************************
* vlc_object_release: decrement an object refcount
*****************************************************************************/
void __vlc_object_release( vlc_object_t *p_this )
{
vlc_mutex_lock( &structure_lock );
p_this->i_refcount--;
vlc_mutex_unlock( &structure_lock );
}
/*****************************************************************************
* vlc_object_attach: 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.
*****************************************************************************/
void __vlc_object_attach( vlc_object_t *p_this, vlc_object_t *p_parent )
{
vlc_mutex_lock( &structure_lock );
/* Attach the parent to its child */
p_this->p_parent = p_parent;
/* Attach the child to its parent */
INSERT_ELEM( p_parent->pp_children, p_parent->i_children,
p_parent->i_children, p_this );
/* Climb up the tree to see whether we are connected with the root */
if( p_parent->b_attached )
{
SetAttachment( p_this, VLC_TRUE );
}
vlc_mutex_unlock( &structure_lock );
}
/*****************************************************************************
* vlc_object_detach: detach object from its parent
*****************************************************************************
* This function removes all links between an object and its parent.
*****************************************************************************/
void __vlc_object_detach( vlc_object_t *p_this )
{
vlc_mutex_lock( &structure_lock );
if( !p_this->p_parent )
{
msg_Err( p_this, "object is not attached" );
vlc_mutex_unlock( &structure_lock );
return;
}
/* Climb up the tree to see whether we are connected with the root */
if( p_this->p_parent->b_attached )
{
SetAttachment( p_this, VLC_FALSE );
}
DetachObject( p_this );
vlc_mutex_unlock( &structure_lock );
}
/*****************************************************************************
* vlc_list_find: 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;
vlc_object_t **pp_current, **pp_end;
int i_count = 0, i_index = 0;
vlc_mutex_lock( &structure_lock );
/* Look for the objects */
switch( i_mode & 0x000f )
{
case FIND_ANYWHERE:
pp_current = p_this->p_libvlc->pp_objects;
pp_end = pp_current + p_this->p_libvlc->i_objects;
for( ; pp_current < pp_end ; pp_current++ )
{
if( (*pp_current)->b_attached
&& (*pp_current)->i_object_type == i_type )
{
i_count++;
}
}
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 );
return p_list;
}
/*****************************************************************************
* DumpCommand: print the current vlc structure
*****************************************************************************
* This function prints either an ASCII tree showing the connections between
* 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 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( *newval.psz_string )
{
p_object = vlc_object_get( p_this, atoi(newval.psz_string) );
if( !p_object )
{
return VLC_ENOOBJ;
}
}
else
{
p_object = p_this->p_vlc ? VLC_OBJECT(p_this->p_vlc) : p_this;
}
vlc_mutex_lock( &structure_lock );
psz_foo[0] = '|';
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' )
{
vlc_object_t **pp_current, **pp_end;
vlc_mutex_lock( &structure_lock );
pp_current = p_this->p_libvlc->pp_objects;
pp_end = pp_current + p_this->p_libvlc->i_objects;
for( ; pp_current < pp_end ; pp_current++ )
{
if( (*pp_current)->b_attached )
{
PrintObject( *pp_current, "" );
}
else
{
printf( " o %.8i %s (not attached)\n",
(*pp_current)->i_object_id,
(*pp_current)->psz_object_type );
}
}
vlc_mutex_unlock( &structure_lock );
}
return VLC_SUCCESS;
}
/*****************************************************************************
* vlc_list_release: free a list previously allocated by vlc_list_find
*****************************************************************************
* This function decreases the refcount of all objects in the list and
* frees the list.
*****************************************************************************/
void vlc_list_release( vlc_list_t *p_list )
{
int i_index;
for( i_index = 0; i_index < p_list->i_count; i_index++ )
{
vlc_mutex_lock( &structure_lock );
p_list->p_values[i_index].p_object->i_refcount--;
vlc_mutex_unlock( &structure_lock );
}
free( p_list->p_values );
free( p_list );
}
/* Following functions are local */
/*****************************************************************************
* FindIndex: find the index of an object in an array of objects
*****************************************************************************
* This function assumes that p_this can be found in pp_objects. It will not
* crash if p_this cannot be found, but will return a wrong value. It is your
* duty to check the return value if you are not certain that the object could
* be found for sure.
*****************************************************************************/
static int FindIndex( vlc_object_t *p_this,
vlc_object_t **pp_objects, int i_count )
{
int i_middle = i_count / 2;
if( i_count == 0 )
{
return 0;
}
if( pp_objects[i_middle] == p_this )
{
return i_middle;
}
if( i_count == 1 )
{
return 0;
}
/* We take advantage of the sorted array */
if( pp_objects[i_middle]->i_object_id < p_this->i_object_id )
{
return i_middle + FindIndex( p_this, pp_objects + i_middle,
i_count - i_middle );
}
else
{
return FindIndex( p_this, pp_objects, i_middle );
}
}
static vlc_object_t * FindObject( vlc_object_t *p_this, int i_type, int i_mode )
{
int i;
vlc_object_t *p_tmp;
switch( i_mode & 0x000f )
{
case FIND_PARENT:
p_tmp = p_this->p_parent;
if( p_tmp )
{
if( p_tmp->i_object_type == i_type )
{
p_tmp->i_refcount++;
return p_tmp;
}
else
{
return FindObject( p_tmp, i_type, i_mode );
}
}
break;
case FIND_CHILD:
for( i = p_this->i_children; i--; )
{
p_tmp = p_this->pp_children[i];
if( p_tmp->i_object_type == i_type )
{
p_tmp->i_refcount++;
return p_tmp;
}
else if( p_tmp->i_children )
{
p_tmp = FindObject( p_tmp, i_type, i_mode );
if( p_tmp )
{
return p_tmp;
}
}
}
break;
case FIND_ANYWHERE:
/* Handled in vlc_object_find */
break;
}
return NULL;
}
static void DetachObject( vlc_object_t *p_this )
{
vlc_object_t *p_parent = p_this->p_parent;
int i_index, i;
/* Remove p_this's parent */
p_this->p_parent = NULL;
/* Remove all of p_parent's children which are p_this */
for( i_index = p_parent->i_children ; i_index-- ; )
{
if( p_parent->pp_children[i_index] == p_this )
{
p_parent->i_children--;
for( i = i_index ; i < p_parent->i_children ; i++ )
{
p_parent->pp_children[i] = p_parent->pp_children[i+1];
}
}
}
if( p_parent->i_children )
{
p_parent->pp_children = (vlc_object_t **)realloc( p_parent->pp_children,
p_parent->i_children * sizeof(vlc_object_t *) );
}
else
{
free( p_parent->pp_children );
p_parent->pp_children = NULL;
}
}
/*****************************************************************************
* SetAttachment: recursively set the b_attached flag of a subtree.
*****************************************************************************
* This function is used by the attach and detach functions to propagate
* the b_attached flag in a subtree.
*****************************************************************************/
static void SetAttachment( vlc_object_t *p_this, vlc_bool_t b_attached )
{
int i_index;
for( i_index = p_this->i_children ; i_index-- ; )
{
SetAttachment( p_this->pp_children[i_index], b_attached );
}
p_this->b_attached = b_attached;
}
static void PrintObject( vlc_object_t *p_this, const char *psz_prefix )
{
char psz_children[20], psz_refcount[20], psz_thread[20], psz_name[50];
psz_name[0] = '\0';
if( p_this->psz_object_name )
{
snprintf( psz_name, 50, " \"%s\"", p_this->psz_object_name );
psz_name[48] = '\"';
psz_name[49] = '\0';
}
psz_children[0] = '\0';
switch( p_this->i_children )
{
case 0:
break;
case 1:
strcpy( psz_children, ", 1 child" );
break;
default:
snprintf( psz_children, 20,
", %i children", p_this->i_children );
psz_children[19] = '\0';
break;
}
psz_refcount[0] = '\0';
if( p_this->i_refcount )
{
snprintf( psz_refcount, 20, ", refcount %i", p_this->i_refcount );
psz_refcount[19] = '\0';
}
psz_thread[0] = '\0';
if( p_this->b_thread )
{
snprintf( psz_thread, 20, " (thread %d)", (int)p_this->thread_id );
psz_thread[19] = '\0';
}
printf( " %so %.8i %s%s%s%s%s\n", psz_prefix,
p_this->i_object_id, p_this->psz_object_type,
psz_name, psz_thread, psz_refcount, psz_children );
}
static void DumpStructure( vlc_object_t *p_this, int i_level, char *psz_foo )
{
int i;
char i_back = psz_foo[i_level];
psz_foo[i_level] = '\0';
PrintObject( p_this, psz_foo );
psz_foo[i_level] = i_back;
if( i_level / 2 >= MAX_DUMPSTRUCTURE_DEPTH )
{
msg_Warn( p_this, "structure tree is too deep" );
return;
}
for( i = 0 ; i < p_this->i_children ; i++ )
{
if( i_level )
{
psz_foo[i_level-1] = ' ';
if( psz_foo[i_level-2] == '`' )
{
psz_foo[i_level-2] = ' ';
}
}
if( i == p_this->i_children - 1 )
{
psz_foo[i_level] = '`';
}
else
{
psz_foo[i_level] = '|';
}
psz_foo[i_level+1] = '-';
psz_foo[i_level+2] = '\0';
DumpStructure( p_this->pp_children[i], i_level + 2, psz_foo );
}
}
static vlc_list_t * NewList( int i_count )
{
vlc_list_t * p_list = (vlc_list_t *)malloc( sizeof( vlc_list_t ) );
if( p_list == NULL )
{
return NULL;
}
p_list->i_count = i_count;
if( i_count == 0 )
{
p_list->p_values = NULL;
return p_list;
}
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 void ListReplace( vlc_list_t *p_list, vlc_object_t *p_object,
int i_index )
{
if( p_list == NULL || i_index >= p_list->i_count )
{
return;
}
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 )
{
return;
}
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->p_values[p_list->i_count].p_object = p_object;
p_list->i_count++;
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 );
}
}
}