1/* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11#include "testsupport/frame_reader.h" 12 13#include <cassert> 14 15#include "testsupport/fileutils.h" 16 17namespace webrtc { 18namespace test { 19 20FrameReaderImpl::FrameReaderImpl(std::string input_filename, 21 int frame_length_in_bytes) 22 : input_filename_(input_filename), 23 frame_length_in_bytes_(frame_length_in_bytes), 24 input_file_(NULL) { 25} 26 27FrameReaderImpl::~FrameReaderImpl() { 28 Close(); 29} 30 31bool FrameReaderImpl::Init() { 32 if (frame_length_in_bytes_ <= 0) { 33 fprintf(stderr, "Frame length must be >0, was %d\n", 34 frame_length_in_bytes_); 35 return false; 36 } 37 input_file_ = fopen(input_filename_.c_str(), "rb"); 38 if (input_file_ == NULL) { 39 fprintf(stderr, "Couldn't open input file for reading: %s\n", 40 input_filename_.c_str()); 41 return false; 42 } 43 // Calculate total number of frames. 44 size_t source_file_size = GetFileSize(input_filename_); 45 if (source_file_size <= 0u) { 46 fprintf(stderr, "Found empty file: %s\n", input_filename_.c_str()); 47 return false; 48 } 49 number_of_frames_ = source_file_size / frame_length_in_bytes_; 50 return true; 51} 52 53void FrameReaderImpl::Close() { 54 if (input_file_ != NULL) { 55 fclose(input_file_); 56 input_file_ = NULL; 57 } 58} 59 60bool FrameReaderImpl::ReadFrame(WebRtc_UWord8* source_buffer) { 61 assert(source_buffer); 62 if (input_file_ == NULL) { 63 fprintf(stderr, "FrameReader is not initialized (input file is NULL)\n"); 64 return false; 65 } 66 size_t nbr_read = fread(source_buffer, 1, frame_length_in_bytes_, 67 input_file_); 68 if (nbr_read != static_cast<unsigned int>(frame_length_in_bytes_) && 69 ferror(input_file_)) { 70 fprintf(stderr, "Error reading from input file: %s\n", 71 input_filename_.c_str()); 72 return false; 73 } 74 if (feof(input_file_) != 0) { 75 return false; // No more frames to process. 76 } 77 return true; 78} 79 80} // namespace test 81} // namespace webrtc 82