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 #include "base/logging.h"
   8
   9 namespace media {
  10
  11 DataBuffer::DataBuffer(int buffer_size)
  12     : buffer_size_(buffer_size),
  13       data_size_(0) {
  14   CHECK_GE(buffer_size, 0);
  15   data_.reset(new uint8[buffer_size_]);
  16 }
  17
  18 DataBuffer::DataBuffer(scoped_ptr<uint8[]> buffer, int buffer_size)
  19     : data_(buffer.Pass()),
  20       buffer_size_(buffer_size),
  21       data_size_(buffer_size) {
  22   CHECK(data_.get());
  23   CHECK_GE(buffer_size, 0);
  24 }
  25
  26 DataBuffer::DataBuffer(const uint8* data, int data_size)
  27     : buffer_size_(data_size),
  28       data_size_(data_size) {
  29   if (!data) {
  30     CHECK_EQ(data_size, 0);
  31     return;
  32   }
  33
  34   CHECK_GE(data_size, 0);
  35   data_.reset(new uint8[buffer_size_]);
  36   memcpy(data_.get(), data, data_size_);
  37 }
  38
  39 DataBuffer::~DataBuffer() {}
  40
  41 // static
  42 scoped_refptr<DataBuffer> DataBuffer::CopyFrom(const uint8* data, int size) {
  43   // If you hit this CHECK you likely have a bug in a demuxer. Go fix it.
  44   CHECK(data);
  45   return make_scoped_refptr(new DataBuffer(data, size));
  46 }
  47
  48 // static
  49 scoped_refptr<DataBuffer> DataBuffer::CreateEOSBuffer() {
  50   return make_scoped_refptr(new DataBuffer(NULL, 0));
  51 }
  52 }  // namespace media