Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/audaspace/src/util/Buffer.cpp

@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * 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/Buffer.h"
+
+#include <algorithm>
+#include <cstring>
+#include <cstdlib>
+
+#define ALIGNMENT 32
+#define ALIGN(a) (a + ALIGNMENT - ((long long)a & (ALIGNMENT-1)))
+
+AUD_NAMESPACE_BEGIN
+
+Buffer::Buffer(long long size)
+{
+	m_size = size;
+	m_buffer = (data_t*) std::malloc(size + ALIGNMENT);
+}
+
+Buffer::~Buffer()
+{
+	std::free(m_buffer);
+}
+
+const sample_t* Buffer::getBuffer() const
+{
+	return (sample_t*) ALIGN(m_buffer);
+}
+
+sample_t* Buffer::getBuffer()
+{
+	return (sample_t*) ALIGN(m_buffer);
+}
+
+long long Buffer::getSize() const
+{
+	return m_size;
+}
+
+void Buffer::resize(long long size, bool keep)
+{
+	if(keep)
+	{
+		data_t* buffer = (data_t*) std::malloc(size + ALIGNMENT);
+
+		std::memcpy(ALIGN(buffer), ALIGN(m_buffer), std::min(size, m_size));
+
+		std::free(m_buffer);
+		m_buffer = buffer;
+	}
+	else
+		m_buffer = (data_t*) std::realloc(m_buffer, size + ALIGNMENT);
+
+	m_size = size;
+}
+
+void Buffer::assureSize(long long size, bool keep)
+{
+	if(m_size < size)
+		resize(size, keep);
+}
+
+AUD_NAMESPACE_END