1 files changed, 80 insertions, 0 deletions
diff --git a/extern/audaspace/src/util/BufferReader.cpp b/extern/audaspace/src/util/BufferReader.cpp
new file mode 100644
index 00000000000..37744420ab8
--- /dev/null
+++ b/extern/audaspace/src/util/BufferReader.cpp
@@ -0,0 +1,80 @@
+/*******************************************************************************
+ * Copyright 2009-2016 Jörg Müller
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ******************************************************************************/
+
+#include "util/BufferReader.h"
+#include "util/Buffer.h"
+
+#include <cstring>
+
+AUD_NAMESPACE_BEGIN
+
+BufferReader::BufferReader(std::shared_ptr<Buffer> buffer,
+								   Specs specs) :
+	m_position(0), m_buffer(buffer), m_specs(specs)
+{
+}
+
+bool BufferReader::isSeekable() const
+{
+	return true;
+}
+
+void BufferReader::seek(int position)
+{
+	m_position = position;
+}
+
+int BufferReader::getLength() const
+{
+	return m_buffer->getSize() / AUD_SAMPLE_SIZE(m_specs);
+}
+
+int BufferReader::getPosition() const
+{
+	return m_position;
+}
+
+Specs BufferReader::getSpecs() const
+{
+	return m_specs;
+}
+
+void BufferReader::read(int& length, bool& eos, sample_t* buffer)
+{
+	eos = false;
+
+	int sample_size = AUD_SAMPLE_SIZE(m_specs);
+
+	sample_t* buf = m_buffer->getBuffer() + m_position * m_specs.channels;
+
+	// in case the end of the buffer is reached
+	if(m_buffer->getSize() < (m_position + length) * sample_size)
+	{
+		length = m_buffer->getSize() / sample_size - m_position;
+		eos = true;
+	}
+
+	if(length < 0)
+	{
+		length = 0;
+		return;
+	}
+
+	m_position += length;
+	std::memcpy(buffer, buf, length * sample_size);
+}
+
+AUD_NAMESPACE_END