Adding ChunkDemuxer implementation.

media/base/data_buffer.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/logging.h"
 #include "media/base/data_buffer.h"
 
 namespace media {
 
 DataBuffer::DataBuffer(uint8* buffer, size_t buffer_size)
     : data_(buffer),
       buffer_size_(buffer_size),
       data_size_(buffer_size) {
 }
 
+DataBuffer::DataBuffer(uint8* buffer, size_t buffer_size, bool copy)
+    : buffer_size_(buffer_size),
+      data_size_(buffer_size) {
+  if (copy) {
+    data_.reset(new uint8[buffer_size]);
+    memcpy(data_.get(), buffer, buffer_size);
+  } else {
+    data_.reset(buffer);
+  }
+}
+
 DataBuffer::DataBuffer(size_t buffer_size)
     : data_(new uint8[buffer_size]),
       buffer_size_(buffer_size),
       data_size_(0) {
   CHECK(data_.get()) << "DataBuffer ctor failed to allocate memory";
 
   // Prevent arbitrary pointers.
   if (buffer_size == 0)
     data_.reset(NULL);
 }
@@ skipping 17 matching lines @@
 void DataBuffer::SetDataSize(size_t data_size) {
   DCHECK_LE(data_size, buffer_size_);
   data_size_ = data_size;
 }
 
 size_t DataBuffer::GetBufferSize() const {
   return buffer_size_;
 }
 
 }  // namespace media