/usr/include/libinstpatch-1.0/libinstpatch/IpatchSampleStoreCache.h is in libinstpatch-dev 1.0.0-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* libInstPatch
* Copyright (C) 1999-2010 Joshua "Element" Green <jgreen@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; version 2.1
* of the License only.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 or on the web at http://www.gnu.org.
*/
/**
* SECTION: IpatchSampleStoreCache
* @short_description: Sample store object for cached samples in RAM
* @see_also: #IpatchSampleData
* @stability: Stable
*
* This sample store type is tightly integrated with #IpatchSampleData to provide
* managed cached samples in RAM.
*/
#ifndef __IPATCH_SAMPLE_STORE_CACHE_H__
#define __IPATCH_SAMPLE_STORE_CACHE_H__
#include <glib.h>
#include <glib-object.h>
#include <libinstpatch/IpatchSampleStore.h>
/* forward type declarations */
typedef struct _IpatchSampleStoreCache IpatchSampleStoreCache;
typedef struct _IpatchSampleStoreCacheClass IpatchSampleStoreCacheClass;
#define IPATCH_TYPE_SAMPLE_STORE_CACHE (ipatch_sample_store_cache_get_type ())
#define IPATCH_SAMPLE_STORE_CACHE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), IPATCH_TYPE_SAMPLE_STORE_CACHE, \
IpatchSampleStoreCache))
#define IPATCH_SAMPLE_STORE_CACHE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), IPATCH_TYPE_SAMPLE_STORE_CACHE, \
IpatchSampleStoreCacheClass))
#define IPATCH_IS_SAMPLE_STORE_CACHE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), IPATCH_TYPE_SAMPLE_STORE_CACHE))
#define IPATCH_IS_SAMPLE_STORE_CACHE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), IPATCH_TYPE_SAMPLE_STORE_CACHE))
/* RAM sample store instance */
struct _IpatchSampleStoreCache
{
IpatchSampleStore parent_instance;
gpointer location; /* Pointer to the sample data in memory */
guint32 channel_map; /* Channel map of cached sample in reference to native sample */
glong last_open; /* Unix time of last open or 0 if currently open */
int open_count; /* Current number of opens (atomic int) */
};
/* RAM sample store class */
struct _IpatchSampleStoreCacheClass
{
IpatchSampleStoreClass parent_class;
};
/**
* ipatch_sample_store_cache_get_location:
* @store: Sample store to get sample data location from
*
* Macro to quickly fetch a cache sample store's data location pointer.
*
* Returns: Sample data pointer.
*/
#define ipatch_sample_store_cache_get_location(store) \
((store)->location) /* No lock needed, set only once during creation */
/**
* ipatch_sample_store_cache_get_channel_map:
* @store: Sample store to get channel map from
*
* Macro to quickly fetch a cache sample store's channel map value. Cached
* samples store a channel map in reference to the native sample of their
* parent #IpatchSampleData.
*
* Returns: Channel map value.
*/
#define ipatch_sample_store_cache_get_channel_map(store) \
((store)->channel_map) /* No lock needed, set only once during creation */
/* Used by #IpatchSampleData */
#define ipatch_sample_store_cache_get_open_count(store) \
g_atomic_int_get (&((store)->open_count))
/* we reserve 4 bits for future expansion */
#define IPATCH_SAMPLE_STORE_CACHE_UNUSED_FLAG_SHIFT \
(IPATCH_SAMPLE_STORE_UNUSED_FLAG_SHIFT + 4)
GType ipatch_sample_store_cache_get_type (void);
IpatchSample *ipatch_sample_store_cache_new (gpointer location);
void ipatch_sample_store_cache_open (IpatchSampleStoreCache *store);
void ipatch_sample_store_cache_close (IpatchSampleStoreCache *store);
#endif
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