Files
platform-external-webrtc/rtc_tools/y4m_file_reader.h
Magnus Jedvert 1b5e5db842 Remove SequencedTaskChecker from Y4mFileReader
SequencedTaskChecker is not part of rtc_base_approved and will not work
in Chromium. This CL simply removes it since it was just a precaution
and is not necessary for the tool. The thread assumptions are stated in
the class comment.

TBR=phensman@webrtc.org

Bug: webrtc:9642
Change-Id: I871ac361975595d8ed07b2e2447e3581c9ba9968
Reviewed-on: https://webrtc-review.googlesource.com/95648
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24401}
2018-08-23 11:04:27 +00:00

98 lines
2.6 KiB
C++

/*
* 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_Y4M_FILE_READER_H_
#define RTC_TOOLS_Y4M_FILE_READER_H_
#include <cstdio>
#include <iterator>
#include <string>
#include <vector>
#include "api/video/video_frame.h"
#include "rtc_base/refcount.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 size_t number_of_frames() const = 0;
virtual rtc::scoped_refptr<I420BufferInterface> GetFrame(
size_t index) const = 0;
};
class Y4mFile : public Video {
public:
// This function opens the file and reads it as an .y4m file. It returns null
// on failure. The file will be closed when the returned object is destroyed.
static rtc::scoped_refptr<Y4mFile> Open(const std::string& file_name);
size_t number_of_frames() const override;
rtc::scoped_refptr<I420BufferInterface> GetFrame(
size_t frame_index) const override;
int width() const;
int height() const;
float fps() const;
protected:
Y4mFile(int width,
int height,
float fps,
const std::vector<fpos_t>& frame_positions,
FILE* file);
~Y4mFile() override;
private:
const int width_;
const int height_;
const float fps_;
const std::vector<fpos_t> frame_positions_;
FILE* const file_;
};
} // namespace test
} // namespace webrtc
#endif // RTC_TOOLS_Y4M_FILE_READER_H_