// Copyright 2013 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_MEDIA_FILE_CHECKER_H_
#define MEDIA_BASE_MEDIA_FILE_CHECKER_H_
#include "base/basictypes.h"
#include "base/files/file.h"
#include "media/base/media_export.h"
namespace base {
class TimeDelta;
}
namespace media {
// This class tries to determine if a file is a valid media file. The entire
// file is not decoded so a positive result from this class does not make the
// file safe to use in the browser process.
class MEDIA_EXPORT MediaFileChecker {
public:
explicit MediaFileChecker(base::File file);
~MediaFileChecker();
// After opening |file|, up to |check_time| amount of wall-clock time is spent
// decoding the file. The amount of audio/video data decoded will depend on
// the bitrate of the file and the speed of the CPU.
bool Start(base::TimeDelta check_time);
private:
base::File file_;
DISALLOW_COPY_AND_ASSIGN(MediaFileChecker);
};
} // namespace media
#endif // MEDIA_BASE_MEDIA_FILE_CHECKER_H_