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// 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.
#ifndef MEDIA_BASE_MOCK_READER_H_
#define MEDIA_BASE_MOCK_READER_H_
#include <string>
#include "base/bind.h"
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "media/base/filters.h"
namespace media {
// Ref counted object so we can create callbacks for asynchronous Read()
// methods for any filter type.
template <class FilterType, class BufferType>
class MockReader
: public base::RefCountedThreadSafe<MockReader<FilterType, BufferType> > {
public:
MockReader()
: called_(false),
expecting_call_(false) {
}
virtual ~MockReader() {
}
// Prepares this object for another read.
void Reset() {
DCHECK(!expecting_call_);
expecting_call_ = false;
called_ = false;
buffer_ = NULL;
}
// Executes an asynchronous read on the given filter.
void Read(FilterType* filter) {
DCHECK(!expecting_call_);
called_ = false;
expecting_call_ = true;
filter->Read(base::Bind(&MockReader::OnReadComplete, this));
}
// Mock accessors.
BufferType* buffer() { return buffer_; }
bool called() { return called_; }
bool expecting_call() { return expecting_call_; }
private:
void OnReadComplete(BufferType* buffer) {
DCHECK(!called_);
DCHECK(expecting_call_);
expecting_call_ = false;
called_ = true;
buffer_ = buffer;
}
// Reference to the buffer provided in the callback.
scoped_refptr<BufferType> buffer_;
// Whether or not the callback was executed.
bool called_;
// Whether or not this reader was expecting a callback.
bool expecting_call_;
DISALLOW_COPY_AND_ASSIGN(MockReader);
};
// Commonly used reader types.
typedef MockReader<DemuxerStream, Buffer> DemuxerStreamReader;
} // namespace media
#endif // MEDIA_BASE_MOCK_READER_H_
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