115bd153c7
This change reduces the number of places where we first fread a I420 frame into a uint8_t buffer, followed by a copy into a frame buffer object. BUG=None Review-Url: https://codereview.webrtc.org/2362683002 Cr-Commit-Position: refs/heads/master@{#14456}
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_TEST_TESTSUPPORT_FRAME_READER_H_
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#define WEBRTC_TEST_TESTSUPPORT_FRAME_READER_H_
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#include <stdio.h>
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#include <string>
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#include "webrtc/base/scoped_ref_ptr.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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class I420Buffer;
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namespace test {
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// Handles reading of I420 frames from video files.
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class FrameReader {
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public:
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virtual ~FrameReader() {}
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// Initializes the frame reader, i.e. opens the input file.
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// This must be called before reading of frames has started.
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// Returns false if an error has occurred, in addition to printing to stderr.
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virtual bool Init() = 0;
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// Reads a frame from the input file. On success, returns the frame.
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// Returns nullptr if encountering end of file or a read error.
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virtual rtc::scoped_refptr<I420Buffer> ReadFrame() = 0;
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// Closes the input file if open. Essentially makes this class impossible
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// to use anymore. Will also be invoked by the destructor.
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virtual void Close() = 0;
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// Frame length in bytes of a single frame image.
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virtual size_t FrameLength() = 0;
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// Total number of frames in the input video source.
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virtual int NumberOfFrames() = 0;
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};
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class FrameReaderImpl : public FrameReader {
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public:
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// Creates a file handler. The input file is assumed to exist and be readable.
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// Parameters:
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// input_filename The file to read from.
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// width, height Size of each frame to read.
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FrameReaderImpl(std::string input_filename, int width, int height);
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~FrameReaderImpl() override;
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bool Init() override;
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rtc::scoped_refptr<I420Buffer> ReadFrame() override;
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void Close() override;
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size_t FrameLength() override;
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int NumberOfFrames() override;
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private:
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std::string input_filename_;
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size_t frame_length_in_bytes_;
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int width_;
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int height_;
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int number_of_frames_;
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FILE* input_file_;
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};
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} // namespace test
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} // namespace webrtc
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#endif // WEBRTC_TEST_TESTSUPPORT_FRAME_READER_H_
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