media/filters/in_memory_url_protocol.cc

   1 // Copyright (c) 2011 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/filters/in_memory_url_protocol.h"
   6
   7 namespace media {
   8
   9 InMemoryUrlProtocol::InMemoryUrlProtocol(const uint8* data, int64 size,
  10                                          bool streaming)
  11     : data_(data),
  12       size_(size >= 0 ? size : 0),
  13       position_(0),
  14       streaming_(streaming) {
  15 }
  16
  17 InMemoryUrlProtocol::~InMemoryUrlProtocol() {}
  18
  19 int InMemoryUrlProtocol::Read(int size, uint8* data) {
  20   int available_bytes = size_ - position_;
  21   if (size > available_bytes)
  22     size = available_bytes;
  23
  24   memcpy(data, data_ + position_, size);
  25   position_ += size;
  26   return size;
  27 }
  28
  29 bool InMemoryUrlProtocol::GetPosition(int64* position_out) {
  30   if (!position_out)
  31     return false;
  32
  33   *position_out = position_;
  34   return true;
  35 }
  36
  37 bool InMemoryUrlProtocol::SetPosition(int64 position) {
  38   if (position < 0 || position > size_)
  39     return false;
  40   position_ = position;
  41   return true;
  42 }
  43
  44 bool InMemoryUrlProtocol::GetSize(int64* size_out) {
  45   if (!size_out)
  46     return false;
  47
  48   *size_out = size_;
  49   return true;
  50 }
  51
  52 bool InMemoryUrlProtocol::IsStreaming() {
  53   return streaming_;
  54 }
  55
  56 }  // namespace media