1 files changed, 83 insertions, 0 deletions
diff --git a/intern/audaspace/FX/AUD_CallbackIIRFilterReader.h b/intern/audaspace/FX/AUD_CallbackIIRFilterReader.h
new file mode 100644
index 00000000000..6472c7baad3
--- /dev/null
+++ b/intern/audaspace/FX/AUD_CallbackIIRFilterReader.h
@@ -0,0 +1,83 @@
+/*
+ * $Id$
+ *
+ * ***** BEGIN LGPL LICENSE BLOCK *****
+ *
+ * Copyright 2009 Jörg Hermann Müller
+ *
+ * This file is part of AudaSpace.
+ *
+ * AudaSpace 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * AudaSpace 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 AudaSpace.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * ***** END LGPL LICENSE BLOCK *****
+ */
+
+#ifndef AUD_CALLBACKIIRFILTERREADER
+#define AUD_CALLBACKIIRFILTERREADER
+
+#include "AUD_BaseIIRFilterReader.h"
+#include "AUD_Buffer.h"
+
+class AUD_CallbackIIRFilterReader;
+
+typedef sample_t (*doFilterIIR)(AUD_CallbackIIRFilterReader*, void*);
+typedef void (*endFilterIIR)(void*);
+
+/**
+ * This class provides an interface for infinite impulse response filters via a
+ * callback filter function.
+ */
+class AUD_CallbackIIRFilterReader : public AUD_BaseIIRFilterReader
+{
+private:
+	/**
+	 * Filter function.
+	 */
+	const doFilterIIR m_filter;
+
+	/**
+	 * End filter function.
+	 */
+	const endFilterIIR m_endFilter;
+
+	/**
+	 * Data pointer.
+	 */
+	void* m_data;
+
+	// hide copy constructor and operator=
+	AUD_CallbackIIRFilterReader(const AUD_CallbackIIRFilterReader&);
+	AUD_CallbackIIRFilterReader& operator=(const AUD_CallbackIIRFilterReader&);
+
+public:
+	/**
+	 * Creates a new callback IIR filter reader.
+	 * \param reader The reader to read from.
+	 * \param in The count of past input samples needed.
+	 * \param out The count of past output samples needed.
+	 * \param doFilter The filter callback.
+	 * \param endFilter The finishing callback.
+	 * \param data Data pointer for the callbacks.
+	 */
+	AUD_CallbackIIRFilterReader(AUD_IReader* reader, int in, int out,
+								doFilterIIR doFilter,
+								endFilterIIR endFilter = 0,
+								void* data = 0);
+
+	virtual ~AUD_CallbackIIRFilterReader();
+
+	virtual sample_t filter();
+};
+
+#endif //AUD_CALLBACKIIRFILTERREADER