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100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/*
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* libInstPatch
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* Copyright (C) 1999-2014 Element Green <element@elementsofsound.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; version 2.1
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* of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA or on the web at http://www.gnu.org.
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*/
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#ifndef __IPATCH_SAMPLE_STORE_CACHE_H__
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#define __IPATCH_SAMPLE_STORE_CACHE_H__
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#include <glib.h>
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#include <glib-object.h>
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#include <libinstpatch/IpatchSampleStore.h>
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/* forward type declarations */
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typedef struct _IpatchSampleStoreCache IpatchSampleStoreCache;
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typedef struct _IpatchSampleStoreCacheClass IpatchSampleStoreCacheClass;
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#define IPATCH_TYPE_SAMPLE_STORE_CACHE (ipatch_sample_store_cache_get_type ())
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#define IPATCH_SAMPLE_STORE_CACHE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), IPATCH_TYPE_SAMPLE_STORE_CACHE, \
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IpatchSampleStoreCache))
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#define IPATCH_SAMPLE_STORE_CACHE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), IPATCH_TYPE_SAMPLE_STORE_CACHE, \
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IpatchSampleStoreCacheClass))
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#define IPATCH_IS_SAMPLE_STORE_CACHE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), IPATCH_TYPE_SAMPLE_STORE_CACHE))
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#define IPATCH_IS_SAMPLE_STORE_CACHE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), IPATCH_TYPE_SAMPLE_STORE_CACHE))
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/* RAM sample store instance */
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struct _IpatchSampleStoreCache
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{
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IpatchSampleStore parent_instance;
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gpointer location; /* Pointer to the sample data in memory */
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guint32 channel_map; /* Channel map of cached sample in reference to native sample */
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glong last_open; /* Unix time of last open or 0 if currently open */
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int open_count; /* Current number of opens (atomic int) */
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};
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/* RAM sample store class */
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struct _IpatchSampleStoreCacheClass
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{
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IpatchSampleStoreClass parent_class;
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};
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/**
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* ipatch_sample_store_cache_get_location:
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* @store: Sample store to get sample data location from
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*
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* Macro to quickly fetch a cache sample store's data location pointer.
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*
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* Returns: Sample data pointer.
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*/
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#define ipatch_sample_store_cache_get_location(store) \
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((store)->location) /* No lock needed, set only once during creation */
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/**
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* ipatch_sample_store_cache_get_channel_map:
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* @store: Sample store to get channel map from
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*
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* Macro to quickly fetch a cache sample store's channel map value. Cached
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* samples store a channel map in reference to the native sample of their
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* parent #IpatchSampleData.
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*
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* Returns: Channel map value.
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*/
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#define ipatch_sample_store_cache_get_channel_map(store) \
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((store)->channel_map) /* No lock needed, set only once during creation */
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/* Used by #IpatchSampleData */
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#define ipatch_sample_store_cache_get_open_count(store) \
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g_atomic_int_get (&((store)->open_count))
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/**
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* IPATCH_SAMPLE_STORE_CACHE_UNUSED_FLAG_SHIFT: (skip)
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*/
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/* we reserve 4 bits for future expansion */
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#define IPATCH_SAMPLE_STORE_CACHE_UNUSED_FLAG_SHIFT \
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(IPATCH_SAMPLE_STORE_UNUSED_FLAG_SHIFT + 4)
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GType ipatch_sample_store_cache_get_type(void);
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IpatchSample *ipatch_sample_store_cache_new(gpointer location);
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void ipatch_sample_store_cache_open(IpatchSampleStoreCache *store);
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void ipatch_sample_store_cache_close(IpatchSampleStoreCache *store);
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#endif
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