mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-15 22:01:27 +00:00
9401162a8a
Original commit message from CVS: Some cleanups. Removed some bogus code from element and pipeline elements. Fixed a typo.
171 lines
4.7 KiB
C
171 lines
4.7 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstbuffer.h: Header for GstBuffer object
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
#ifndef __GST_BUFFER_H__
|
|
#define __GST_BUFFER_H__
|
|
|
|
#include <gst/gstobject.h>
|
|
//#include <gst/gstmeta.h>
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_ATOMIC_H
|
|
#include <asm/atomic.h>
|
|
#endif
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#define GST_BUFFER(buf) \
|
|
((GstBuffer *)(buf))
|
|
|
|
#define GST_BUFFER_FLAGS(buf) \
|
|
(GST_BUFFER(buf)->flags)
|
|
#define GST_BUFFER_FLAG_IS_SET(buf,flag) \
|
|
(GST_BUFFER_FLAGS(buf) & (1<<(flag)))
|
|
#define GST_BUFFER_FLAG_SET(buf,flag) \
|
|
G_STMT_START{ (GST_BUFFER_FLAGS(buf) |= (1<<(flag))); }G_STMT_END
|
|
#define GST_BUFFER_FLAG_UNSET(buf,flag) \
|
|
G_STMT_START{ (GST_BUFFER_FLAGS(buf) &= ~(1<<(flag))); }G_STMT_END
|
|
|
|
|
|
#define GST_BUFFER_DATA(buf) (GST_BUFFER(buf)->data)
|
|
#define GST_BUFFER_SIZE(buf) (GST_BUFFER(buf)->size)
|
|
#define GST_BUFFER_OFFSET(buf) (GST_BUFFER(buf)->offset)
|
|
#define GST_BUFFER_MAXSIZE(buf) (GST_BUFFER(buf)->maxsize)
|
|
#define GST_BUFFER_TIMESTAMP(buf) (GST_BUFFER(buf)->timestamp)
|
|
#define GST_BUFFER_MAXAGE(buf) (GST_BUFFER(buf)->maxage)
|
|
#define GST_BUFFER_BUFFERPOOL(buf) (GST_BUFFER(buf)->pool)
|
|
#define GST_BUFFER_PARENT(buf) (GST_BUFFER(buf)->parent)
|
|
#define GST_BUFFER_POOL_PRIVATE(buf) (GST_BUFFER(buf)->pool_private)
|
|
|
|
|
|
#define GST_BUFFER_LOCK(buf) (g_mutex_lock(GST_BUFFER(buf)->lock))
|
|
#define GST_BUFFER_TRYLOCK(buf) (g_mutex_trylock(GST_BUFFER(buf)->lock))
|
|
#define GST_BUFFER_UNLOCK(buf) (g_mutex_unlock(GST_BUFFER(buf)->lock))
|
|
|
|
|
|
typedef enum {
|
|
GST_BUFFER_READONLY,
|
|
GST_BUFFER_ORIGINAL,
|
|
GST_BUFFER_DONTFREE,
|
|
GST_BUFFER_FLUSH,
|
|
GST_BUFFER_EOS,
|
|
GST_BUFFER_DISCONTINUOUS,
|
|
} GstBufferFlags;
|
|
|
|
|
|
|
|
typedef struct _GstBuffer GstBuffer;
|
|
|
|
|
|
typedef void (*GstBufferFreeFunc) (GstBuffer *buf);
|
|
typedef void (*GstBufferCopyFunc) (GstBuffer *srcbuf,GstBuffer *dstbuf);
|
|
|
|
|
|
#include <gst/gstbufferpool.h>
|
|
|
|
struct _GstBuffer {
|
|
/* locking */
|
|
GMutex *lock;
|
|
|
|
/* refcounting */
|
|
#ifdef HAVE_ATOMIC_H
|
|
atomic_t refcount;
|
|
#define GST_BUFFER_REFCOUNT(buf) (atomic_read(&(GST_BUFFER((buf))->refcount)))
|
|
#else
|
|
int refcount;
|
|
#define GST_BUFFER_REFCOUNT(buf) (GST_BUFFER(buf)->refcount)
|
|
#endif
|
|
|
|
/* flags */
|
|
guint16 flags;
|
|
|
|
/* pointer to data, its size, and offset in original source if known */
|
|
guchar *data;
|
|
guint32 size;
|
|
guint32 maxsize;
|
|
guint32 offset;
|
|
|
|
/* timestamp */
|
|
guint64 timestamp;
|
|
/* max age */
|
|
guint64 maxage;
|
|
|
|
/* pointer to metadata, is really lame right now */
|
|
// GSList *metas;
|
|
|
|
/* subbuffer support, who's my parent? */
|
|
GstBuffer *parent;
|
|
|
|
/* this is a pointer to the buffer pool (if any) */
|
|
GstBufferPool *pool;
|
|
gpointer pool_private;
|
|
|
|
/* utility function pointers */
|
|
GstBufferFreeFunc free; // free the data associated with the buffer
|
|
GstBufferCopyFunc copy; // copy the data from one buffer to another
|
|
};
|
|
|
|
/* initialisation */
|
|
void _gst_buffer_initialize (void);
|
|
/* creating a new buffer from scratch */
|
|
GstBuffer* gst_buffer_new (void);
|
|
GstBuffer* gst_buffer_new_from_pool (GstBufferPool *pool);
|
|
|
|
/* creating a subbuffer */
|
|
GstBuffer* gst_buffer_create_sub (GstBuffer *parent, guint32 offset, guint32 size);
|
|
|
|
/* adding data to a buffer */
|
|
GstBuffer* gst_buffer_append (GstBuffer *buffer, GstBuffer *append);
|
|
|
|
/* refcounting */
|
|
void gst_buffer_ref (GstBuffer *buffer);
|
|
void gst_buffer_ref_by_count (GstBuffer *buffer, int count);
|
|
void gst_buffer_unref (GstBuffer *buffer);
|
|
|
|
/* destroying the buffer */
|
|
void gst_buffer_destroy (GstBuffer *buffer);
|
|
|
|
/* copy buffer */
|
|
GstBuffer* gst_buffer_copy (GstBuffer *buffer);
|
|
|
|
/* add, retrieve, and remove metadata from the buffer */
|
|
/* DEPRECATED!!!
|
|
void gst_buffer_add_meta (GstBuffer *buffer, GstMeta *meta);
|
|
void gst_buffer_remove_meta (GstBuffer *buffer, GstMeta *meta);
|
|
GstMeta* gst_buffer_get_first_meta (GstBuffer *buffer);
|
|
GSList* gst_buffer_get_metas (GstBuffer *buffer);
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#endif /* __GST_BUFFER_H__ */
|