mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-03 05:59:44 +00:00
202ba2ae4a
Original commit message from CVS: State change fixes in the threading element. Added bufferpools.
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/* Gnome-Streamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
*
|
|
* 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/gstmeta.h>
|
|
|
|
|
|
#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) & (flag))
|
|
#define GST_BUFFER_FLAG_SET(buf,flag) \
|
|
G_STMT_START{ (GST_BUFFER_FLAGS(buf) |= (flag)); }G_STMT_END
|
|
#define GST_BUFFER_FLAG_UNSET(buf,flag) \
|
|
G_STMT_START{ (GST_BUFFER_FLAGS(buf) &= ~(flag)); }G_STMT_END
|
|
|
|
|
|
#define GST_BUFFER_TYPE(buf) (GST_BUFFER(buf)->type)
|
|
#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_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 = (1 << 0),
|
|
GST_BUFFER_EOS = (1 << 1),
|
|
GST_BUFFER_ORIGINAL = (1 << 2),
|
|
GST_BUFFER_DONTFREE = (1 << 3),
|
|
GST_BUFFER_FLUSH = (1 << 4),
|
|
} GstBufferFlags;
|
|
|
|
|
|
typedef struct _GstBuffer GstBuffer;
|
|
|
|
#include "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
|
|
|
|
/* data type of this buffer */
|
|
guint16 type;
|
|
/* 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;
|
|
};
|
|
|
|
/* initialisation */
|
|
void _gst_buffer_initialize();
|
|
/* creating a new buffer from scratch */
|
|
GstBuffer *gst_buffer_new();
|
|
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);
|
|
|
|
/* add, retrieve, and remove metadata from the buffer */
|
|
void gst_buffer_add_meta(GstBuffer *buffer,GstMeta *meta);
|
|
GstMeta *gst_buffer_get_first_meta(GstBuffer *buffer);
|
|
GSList *gst_buffer_get_metas(GstBuffer *buffer);
|
|
void gst_buffer_remove_meta(GstBuffer *buffer,GstMeta *meta);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#endif /* __GST_BUFFER_H__ */
|