media/base/data_buffer.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/base/data_buffer.h"
   6
   7
   8 namespace media {
   9
  10 DataBuffer::DataBuffer(int buffer_size)
  11     : buffer_size_(buffer_size),
  12       data_size_(0) {
  13   CHECK_GE(buffer_size, 0);
  14   data_.reset(new uint8[buffer_size_]);
  15 }
  16
  17 DataBuffer::DataBuffer(scoped_ptr<uint8[]> buffer, int buffer_size)
  18     : data_(buffer.Pass()),
  19       buffer_size_(buffer_size),
  20       data_size_(buffer_size) {
  21   CHECK(data_.get());
  22   CHECK_GE(buffer_size, 0);
  23 }
  24
  25 DataBuffer::DataBuffer(const uint8* data, int data_size)
  26     : buffer_size_(data_size),
  27       data_size_(data_size) {
  28   if (!data) {
  29     CHECK_EQ(data_size, 0);
  30     return;
  31   }
  32
  33   CHECK_GE(data_size, 0);
  34   data_.reset(new uint8[buffer_size_]);
  35   memcpy(data_.get(), data, data_size_);
  36 }
  37
  38 DataBuffer::~DataBuffer() {}
  39
  40 // static
  41 scoped_refptr<DataBuffer> DataBuffer::CopyFrom(const uint8* data, int size) {
  42   // If you hit this CHECK you likely have a bug in a demuxer. Go fix it.
  43   CHECK(data);
  44   return make_scoped_refptr(new DataBuffer(data, size));
  45 }
  46
  47 // static
  48 scoped_refptr<DataBuffer> DataBuffer::CreateEOSBuffer() {
  49   return make_scoped_refptr(new DataBuffer(NULL, 0));
  50 }
  51 }  // namespace media