From 64bd557e75113743f179086b365ea7d97b72ee3e Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Thu, 12 Nov 2009 06:56:26 +0000
Subject: String port support.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2255 a436a847-0d15-0410-975c-d299462d15a1
---
 src/engine/StringBuffer.cpp | 121 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/engine/StringBuffer.cpp

(limited to 'src/engine/StringBuffer.cpp')

diff --git a/src/engine/StringBuffer.cpp b/src/engine/StringBuffer.cpp
new file mode 100644
index 00000000..a6cec9f1
--- /dev/null
+++ b/src/engine/StringBuffer.cpp
@@ -0,0 +1,121 @@
+/* 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
+ */
+
+#define __STDC_LIMIT_MACROS 1
+#include <string.h>
+#include <stdint.h>
+#include <iostream>
+#include "ingen-config.h"
+#include "StringBuffer.hpp"
+
+using namespace std;
+
+namespace Ingen {
+
+using namespace Shared;
+
+/** Allocate a new string buffer.
+ * \a capacity is in bytes.
+ */
+StringBuffer::StringBuffer(size_t capacity)
+	: Buffer(DataType(DataType::EVENT), capacity)
+{
+	memset(&_local_buf, '\0', sizeof(LV2_String_Data));
+	_local_buf.data    = (char*)malloc(capacity);
+	_local_buf.storage = capacity;
+
+	_buf = &_local_buf;
+	clear();
+
+	cerr << "Creating String Buffer " << _buf << ", capacity = " << capacity << endl;
+}
+
+
+void
+StringBuffer::clear()
+{
+	static const string default_val("2\n0 1\n1 1\n");
+	if (_buf && _buf->data && _buf->storage > default_val.length())
+		strncpy(_buf->data, default_val.c_str(), default_val.length());
+}
+
+
+/** Use another buffer's data instead of the local one.
+ *
+ * This buffer will essentially be identical to @a buf after this call.
+ */
+bool
+StringBuffer::join(Buffer* buf)
+{
+	assert(buf != this);
+	StringBuffer* sbuf = dynamic_cast<StringBuffer*>(buf);
+	if (!sbuf)
+		return false;
+
+	_buf = &sbuf->_local_buf;
+	_joined_buf = sbuf;
+
+	return true;
+}
+
+
+void
+StringBuffer::unjoin()
+{
+	_joined_buf = NULL;
+	_buf = &_local_buf;
+}
+
+
+void
+StringBuffer::prepare_read(FrameTime start, SampleCount nframes)
+{
+	_this_nframes = nframes;
+}
+
+
+void
+StringBuffer::prepare_write(FrameTime start, SampleCount nframes)
+{
+}
+
+
+void
+StringBuffer::copy(const Buffer* src_buf, size_t start_sample, size_t end_sample)
+{
+	const StringBuffer* src = dynamic_cast<const StringBuffer*>(src_buf);
+	assert(src);
+	assert(src != this);
+	assert(src->_buf != _buf);
+	assert(src->_buf->data != _buf->data);
+
+    strncpy(_buf->data, src->_buf->data, std::min(_buf->len, src->_buf->len));
+	_this_nframes = end_sample - start_sample;
+}
+
+
+void
+StringBuffer::resize(size_t size)
+{
+    _buf->data = (char*)realloc(_buf->data, size);
+    _buf->storage = size;
+	_size = size;
+}
+
+
+} // namespace Ingen
+
-- 
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