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/*
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_TOOLS_VIDEO_FILE_READER_H_
#define RTC_TOOLS_VIDEO_FILE_READER_H_
#include <stddef.h>
#include <cstdio>
#include <iterator>
#include <string>
#include "api/scoped_refptr.h"
#include "api/video/video_frame_buffer.h"
#include "rtc_base/ref_count.h"
namespace webrtc {
namespace test {
// Iterable class representing a sequence of I420 buffers. This class is not
// thread safe because it is expected to be backed by a file.
class Video : public rtc::RefCountInterface {
public:
class Iterator {
public:
typedef int value_type;
typedef std::ptrdiff_t difference_type;
typedef int* pointer;
typedef int& reference;
typedef std::input_iterator_tag iterator_category;
Iterator(const rtc::scoped_refptr<const Video>& video, size_t index);
Iterator(const Iterator& other);
Iterator(Iterator&& other);
Iterator& operator=(Iterator&&);
Iterator& operator=(const Iterator&);
~Iterator();
rtc::scoped_refptr<I420BufferInterface> operator*() const;
bool operator==(const Iterator& other) const;
bool operator!=(const Iterator& other) const;
Iterator operator++(int);
Iterator& operator++();
private:
rtc::scoped_refptr<const Video> video_;
size_t index_;
};
Iterator begin() const;
Iterator end() const;
virtual int width() const = 0;
virtual int height() const = 0;
virtual size_t number_of_frames() const = 0;
virtual rtc::scoped_refptr<I420BufferInterface> GetFrame(
size_t index) const = 0;
};
rtc::scoped_refptr<Video> OpenY4mFile(const std::string& file_name);
rtc::scoped_refptr<Video> OpenYuvFile(const std::string& file_name,
int width,
int height);
// This is a helper function for the two functions above. It reads the file
// extension to determine whether it is a .yuv or a .y4m file.
rtc::scoped_refptr<Video> OpenYuvOrY4mFile(const std::string& file_name,
int width,
int height);
} // namespace test
} // namespace webrtc
#endif // RTC_TOOLS_VIDEO_FILE_READER_H_
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