Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / cinelerra / wavecache.C

diff --git a/cinelerra-5.1/cinelerra/wavecache.C b/cinelerra-5.1/cinelerra/wavecache.C
new file mode 100644 (file)
index 0000000..ffeeed6
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/wavecache.C
@@ -0,0 +1,107 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#include "cstrdup.h"
+#include "indexable.h"
+#include "mutex.h"
+#include "wavecache.h"
+
+#include <string.h>
+
+
+WaveCacheItem::WaveCacheItem()
+ : CacheItemBase()
+{
+}
+
+WaveCacheItem::~WaveCacheItem()
+{
+}
+
+int WaveCacheItem::get_size()
+{
+       return sizeof(WaveCacheItem) + (path ? strlen(path) : 0);
+}
+
+
+
+WaveCache::WaveCache()
+ : CacheBase()
+{
+}
+
+WaveCache::~WaveCache()
+{
+}
+
+
+WaveCacheItem* WaveCache::get_wave(int indexable_id,
+       int channel,
+       int64_t start,
+       int64_t end)
+{
+       lock->lock("WaveCache::get_wave");
+       WaveCacheItem *result = 0;
+       
+       result = (WaveCacheItem*)get_item(start);
+       while(result && result->position == start)
+       {
+               if(result->indexable_id == indexable_id && 
+                       result->channel == channel &&
+                       result->end == end)
+               {
+                       result->age = get_age();
+                       return result;
+               }
+               else
+                       result = (WaveCacheItem*)result->next;
+       }
+       
+       lock->unlock();
+       return 0;
+}
+
+void WaveCache::put_wave(Indexable *indexable,
+       int channel,
+       int64_t start,
+       int64_t end,
+       double high,
+       double low)
+{
+       lock->lock("WaveCache::put_wave");
+       WaveCacheItem *item = new WaveCacheItem;
+       item->indexable_id = indexable->id;
+       item->path = cstrdup(indexable->path);
+       item->channel = channel;
+       item->position = start;
+       item->end = end;
+       item->high = high;
+       item->low = low;
+       
+       put_item(item);
+       lock->unlock();
+}
+
+
+
+
+
+