String port support.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2255 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 59 insertions, 0 deletions

diff --git a/src/engine/StringBuffer.hpp b/src/engine/StringBuffer.hpp
new file mode 100644
index 00000000..79d83f7a
--- /dev/null
+++ b/src/engine/StringBuffer.hpp
@@ -0,0 +1,59 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2009 Dave Robillard <http://drobilla.net>
+ *
+ * Ingen 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.
+ *
+ * Ingen 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 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef STRINGBUFFER_H
+#define STRINGBUFFER_H
+
+#include "string-port.lv2/string-port.h"
+#include "interface/DataType.hpp"
+#include "Buffer.hpp"
+
+namespace Ingen {
+
+
+class StringBuffer : public Buffer {
+public:
+	StringBuffer(size_t capacity);
+
+	void clear();
+
+	void*       raw_data()       { return (void*)&_buf; }
+	const void* raw_data() const { return (void*)&_buf; }
+
+	char*       data()       { return _buf->data; }
+	const char* data() const { return _buf->data; }
+
+	void prepare_read(FrameTime start, SampleCount nframes);
+	void prepare_write(FrameTime start, SampleCount nframes);
+
+	bool join(Buffer* buf);
+	void unjoin();
+
+	void copy(const Buffer* src, size_t start_sample, size_t end_sample);
+
+	void resize(size_t size);
+
+private:
+	LV2_String_Data* _buf;          ///< Contents (_local_buf or belongs to _joined_buf)
+	LV2_String_Data  _local_buf;    ///< Local contents
+	uint32_t         _this_nframes; ///< Current cycle nframes
+};
+
+
+} // namespace Ingen
+
+#endif // STRINGBUFFER_H