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- /*****************************************************************************
- * vlc_picture_pool.h: picture pool definitions
- *****************************************************************************
- * Copyright (C) 2009 the VideoLAN team
- * $Id: 1c9049cb875f78560f918555cbd42c3a23aa2e7e $
- *
- * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
-
- #ifndef VLC_PICTURE_POOL_H
- #define VLC_PICTURE_POOL_H 1
-
- /**
- * \file
- * This file defines picture pool structures and functions in vlc
- */
-
- #include <vlc_picture.h>
-
- /**
- * Picture pool handle
- *
- * XXX it is not thread safe, all pool manipulations and picture_Release
- * must be properly locked if needed.
- */
- typedef struct picture_pool_t picture_pool_t;
-
- /**
- * Picture pool configuration
- */
- typedef struct {
- int picture_count;
- picture_t **picture;
-
- int (*lock)(picture_t *);
- void (*unlock)(picture_t *);
- } picture_pool_configuration_t;
-
- /**
- * It creates a picture_pool_t wrapping the given configuration.
- *
- * It avoids useless picture creations/destructions.
- * The given picture must not have a reference count greater than 1.
- * The pool takes ownership of the picture and MUST not be used directly.
- * When deleted, the pool will release the pictures using picture_Release.
- * If defined, picture_pool_configuration_t::lock will be called before
- * a picture is used, and picture_pool_configuration_t::unlock will be called
- * as soon as a picture is unused. They are allowed to modify picture_t::p and
- * access picture_t::p_sys.
- */
- VLC_EXPORT( picture_pool_t *, picture_pool_NewExtended, ( const picture_pool_configuration_t * ) );
-
- /**
- * It creates a picture_pool_t wrapping the given arrays of picture.
- *
- * It is provided as convenience.
- */
- VLC_EXPORT( picture_pool_t *, picture_pool_New, ( int picture_count, picture_t *picture[] ) );
-
- /**
- * It creates a picture_pool_t creating images using the given format.
- *
- * Provided for convenience.
- */
- VLC_EXPORT( picture_pool_t *, picture_pool_NewFromFormat, ( const video_format_t *, int picture_count ) );
-
- /**
- * It destroys a pool created by picture_pool_New.
- *
- * All pictures must already be released to the pool. The pool will then
- * released them.
- */
- VLC_EXPORT( void, picture_pool_Delete, ( picture_pool_t * ) );
-
- /**
- * It retreives a picture_t from a pool.
- *
- * The picture must be release by using picture_Release.
- */
- VLC_EXPORT( picture_t *, picture_pool_Get, ( picture_pool_t * ) );
-
- /**
- * It forces the next picture_pool_Get to return a picture even if no
- * pictures are free.
- *
- * If b_reset is true, all pictures will be marked as free.
- *
- * It does it by releasing itself the oldest used picture if none is
- * available.
- * XXX it should be used with great care, the only reason you may need
- * it is to workaround a bug.
- */
- VLC_EXPORT( void, picture_pool_NonEmpty, ( picture_pool_t *, bool reset ) );
-
- #endif /* VLC_PICTURE_POOL_H */
-
-