1 files changed, 83 insertions, 0 deletions
diff --git a/extern/audaspace/src/util/StreamBuffer.cpp b/extern/audaspace/src/util/StreamBuffer.cpp
new file mode 100644
index 00000000000..b87b363377d
--- /dev/null
+++ b/extern/audaspace/src/util/StreamBuffer.cpp
@@ -0,0 +1,83 @@
+/*******************************************************************************
+ * 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/StreamBuffer.h"
+#include "util/BufferReader.h"
+#include "util/Buffer.h"
+
+// 5 sec * 48000 samples/sec * 4 bytes/sample * 6 channels
+#define BUFFER_RESIZE_BYTES 5760000
+
+AUD_NAMESPACE_BEGIN
+
+StreamBuffer::StreamBuffer(std::shared_ptr<ISound> sound) :
+	m_buffer(new Buffer())
+{
+	std::shared_ptr<IReader> reader = sound->createReader();
+
+	m_specs = reader->getSpecs();
+
+	int sample_size = AUD_SAMPLE_SIZE(m_specs);
+	int length;
+	int index = 0;
+	bool eos = false;
+
+	// get an approximated size if possible
+	int size = reader->getLength();
+
+	if(size <= 0)
+		size = BUFFER_RESIZE_BYTES / sample_size;
+	else
+		size += m_specs.rate;
+
+	// as long as the end of the stream is not reached
+	while(!eos)
+	{
+		// increase
+		m_buffer->resize(size*sample_size, true);
+
+		// read more
+		length = size-index;
+		reader->read(length, eos, m_buffer->getBuffer() + index * m_specs.channels);
+		if(index == m_buffer->getSize() / sample_size)
+			size += BUFFER_RESIZE_BYTES / sample_size;
+		index += length;
+	}
+
+	m_buffer->resize(index * sample_size, true);
+}
+
+StreamBuffer::StreamBuffer(std::shared_ptr<Buffer> buffer, Specs specs) :
+	m_buffer(buffer), m_specs(specs)
+{
+}
+
+std::shared_ptr<Buffer> StreamBuffer::getBuffer()
+{
+	return m_buffer;
+}
+
+Specs StreamBuffer::getSpecs()
+{
+	return m_specs;
+}
+
+std::shared_ptr<IReader> StreamBuffer::createReader()
+{
+	return std::shared_ptr<IReader>(new BufferReader(m_buffer, m_specs));
+}
+
+AUD_NAMESPACE_END