114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
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/*
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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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#include "file_handler.h"
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#include <cassert>
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namespace webrtc {
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namespace test {
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FileHandlerImpl::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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: input_filename_(input_filename),
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output_filename_(output_filename),
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frame_length_in_bytes_(frame_length_in_bytes),
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input_file_(NULL),
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output_file_(NULL) {
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}
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FileHandlerImpl::~FileHandlerImpl() {
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Close();
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}
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bool FileHandlerImpl::Init() {
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if (frame_length_in_bytes_ <= 0) {
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fprintf(stderr, "Frame length must be >0, was %d\n",
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frame_length_in_bytes_);
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return false;
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}
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input_file_ = fopen(input_filename_.c_str(), "rb");
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if (input_file_ == NULL) {
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fprintf(stderr, "Couldn't open input file for reading: %s\n",
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input_filename_.c_str());
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return false;
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}
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output_file_ = fopen(output_filename_.c_str(), "wb");
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if (output_file_ == NULL) {
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fprintf(stderr, "Couldn't open output file for writing: %s\n",
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output_filename_.c_str());
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return false;
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}
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// Calculate total number of frames:
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WebRtc_UWord64 source_file_size = GetFileSize(input_filename_);
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if (source_file_size <= 0u) {
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fprintf(stderr, "Found empty file: %s\n", input_filename_.c_str());
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return false;
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}
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number_of_frames_ = source_file_size / frame_length_in_bytes_;
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return true;
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}
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void FileHandlerImpl::Close() {
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if (input_file_ != NULL) {
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fclose(input_file_);
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input_file_ = NULL;
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}
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if (output_file_ != NULL) {
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fclose(output_file_);
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output_file_ = NULL;
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}
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}
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bool FileHandlerImpl::ReadFrame(WebRtc_UWord8* source_buffer) {
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assert(source_buffer);
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if (input_file_ == NULL) {
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fprintf(stderr, "FileHandler is not initialized (input file is NULL)\n");
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return false;
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}
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fread(source_buffer, 1, frame_length_in_bytes_, input_file_);
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if (feof(input_file_) != 0) {
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return false; // no more frames to process
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}
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return true;
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}
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WebRtc_UWord64 FileHandlerImpl::GetFileSize(std::string filename) {
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FILE* f = fopen(filename.c_str(), "rb");
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WebRtc_UWord64 size = 0;
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if (f != NULL) {
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if (fseek(f, 0, SEEK_END) == 0) {
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size = ftell(f);
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}
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fclose(f);
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}
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return size;
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}
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bool FileHandlerImpl::WriteFrame(WebRtc_UWord8* frame_buffer) {
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assert(frame_buffer);
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if (output_file_ == NULL) {
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fprintf(stderr, "FileHandler is not initialized (output file is NULL)\n");
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return false;
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}
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int bytes_written = fwrite(frame_buffer, 1, frame_length_in_bytes_,
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output_file_);
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if (bytes_written != frame_length_in_bytes_) {
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fprintf(stderr, "Failed to write %d bytes to file %s\n",
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frame_length_in_bytes_, output_filename_.c_str());
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return false;
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}
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return true;
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}
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} // namespace test
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} // namespace webrtc
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