35a1756502
See https://docs.google.com/a/google.com/document/d/1w6Nrxw6yTg_sDu18Ux8oZPEMo5F_R-zt62udrmmTeOc/edit?hl=en_US for background, details and additional instructions on usage. BUG= TEST= Review URL: http://webrtc-codereview.appspot.com/175001 git-svn-id: http://webrtc.googlecode.com/svn/trunk@700 4adac7df-926f-26a2-2b94-8c16560cd09d
83 lines
2.9 KiB
C++
83 lines
2.9 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 SRC_MODULES_VIDEO_CODING_CODECS_TEST_FILE_HANDLER_H_
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#define SRC_MODULES_VIDEO_CODING_CODECS_TEST_FILE_HANDLER_H_
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#include <cstdio>
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#include <string>
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#include "typedefs.h"
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namespace webrtc {
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namespace test {
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// Handles reading and writing video files for the test framework's needs.
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class FileHandler {
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public:
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virtual ~FileHandler() {}
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// Initializes the file handler, i.e. opens the input and output files etc.
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// This must be called before reading or writing 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 into the supplied buffer, which must contain enough space
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// for the frame size.
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// Returns true if there are more frames to read, false if we've already
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// read the last frame (in the previous call).
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virtual bool ReadFrame(WebRtc_UWord8* source_buffer) = 0;
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// Writes a frame of the configured frame length to the output file.
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// Returns true if the write was successful, false otherwise.
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virtual bool WriteFrame(WebRtc_UWord8* frame_buffer) = 0;
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// Closes the input and output files. Essentially makes this class impossible
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// to use anymore.
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virtual void Close() = 0;
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// File size of the supplied file in bytes. Will return 0 if the file is
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// empty or if the file does not exist/is readable.
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virtual WebRtc_UWord64 GetFileSize(std::string filename) = 0;
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// Frame length in bytes of a single frame image.
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virtual int GetFrameLength() = 0;
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// Total number of frames in the input video source.
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virtual int GetNumberOfFrames() = 0;
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};
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class FileHandlerImpl : public FileHandler {
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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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// and the output file must be writable.
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FileHandlerImpl(std::string input_filename,
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std::string output_filename,
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int frame_length_in_bytes);
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virtual ~FileHandlerImpl();
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bool Init();
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bool ReadFrame(WebRtc_UWord8* source_buffer);
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bool WriteFrame(WebRtc_UWord8* frame_buffer);
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void Close();
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WebRtc_UWord64 GetFileSize(std::string filename);
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int GetFrameLength() { return frame_length_in_bytes_; }
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int GetNumberOfFrames() { return number_of_frames_; }
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private:
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std::string input_filename_;
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std::string output_filename_;
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int frame_length_in_bytes_;
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int number_of_frames_;
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FILE* input_file_;
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FILE* output_file_;
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};
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} // namespace test
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} // namespace webrtc
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#endif // SRC_MODULES_VIDEO_CODING_CODECS_TEST_FILE_HANDLER_H_
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