86 lines
2.5 KiB
C++
86 lines
2.5 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 "webrtc/test/testsupport/frame_reader.h"
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#include <assert.h>
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#include "webrtc/test/testsupport/fileutils.h"
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namespace webrtc {
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namespace test {
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FrameReaderImpl::FrameReaderImpl(std::string input_filename,
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size_t frame_length_in_bytes)
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: input_filename_(input_filename),
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frame_length_in_bytes_(frame_length_in_bytes),
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input_file_(NULL) {
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}
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FrameReaderImpl::~FrameReaderImpl() {
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Close();
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}
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bool FrameReaderImpl::Init() {
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if (frame_length_in_bytes_ <= 0) {
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fprintf(stderr, "Frame length must be >0, was %zu\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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// Calculate total number of frames.
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size_t 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_ = static_cast<int>(source_file_size /
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frame_length_in_bytes_);
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return true;
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}
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void FrameReaderImpl::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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}
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bool FrameReaderImpl::ReadFrame(uint8_t* source_buffer) {
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assert(source_buffer);
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if (input_file_ == NULL) {
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fprintf(stderr, "FrameReader is not initialized (input file is NULL)\n");
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return false;
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}
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size_t nbr_read = fread(source_buffer, 1, frame_length_in_bytes_,
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input_file_);
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if (nbr_read != static_cast<unsigned int>(frame_length_in_bytes_) &&
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ferror(input_file_)) {
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fprintf(stderr, "Error reading from input file: %s\n",
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input_filename_.c_str());
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return false;
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}
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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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size_t FrameReaderImpl::FrameLength() { return frame_length_in_bytes_; }
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int FrameReaderImpl::NumberOfFrames() { return number_of_frames_; }
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} // namespace test
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} // namespace webrtc
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