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 "webrtc/test/testsupport/frame_reader.h" 12 13 #include <assert.h> 14 15 #include "webrtc/test/testsupport/fileutils.h" 16 17 namespace webrtc { 18 namespace test { 19 20 FrameReaderImpl::FrameReaderImpl(std::string input_filename, 21 size_t frame_length_in_bytes) 22 : input_filename_(input_filename), 23 frame_length_in_bytes_(frame_length_in_bytes), 24 input_file_(NULL) { 25 } 26 27 FrameReaderImpl::~FrameReaderImpl() { 28 Close(); 29 } 30 31 bool FrameReaderImpl::Init() { 32 if (frame_length_in_bytes_ <= 0) { 33 fprintf(stderr, "Frame length must be >0, was %zu\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_ = static_cast<int>(source_file_size / 50 frame_length_in_bytes_); 51 return true; 52 } 53 54 void FrameReaderImpl::Close() { 55 if (input_file_ != NULL) { 56 fclose(input_file_); 57 input_file_ = NULL; 58 } 59 } 60 61 bool FrameReaderImpl::ReadFrame(uint8_t* source_buffer) { 62 assert(source_buffer); 63 if (input_file_ == NULL) { 64 fprintf(stderr, "FrameReader is not initialized (input file is NULL)\n"); 65 return false; 66 } 67 size_t nbr_read = fread(source_buffer, 1, frame_length_in_bytes_, 68 input_file_); 69 if (nbr_read != static_cast<unsigned int>(frame_length_in_bytes_) && 70 ferror(input_file_)) { 71 fprintf(stderr, "Error reading from input file: %s\n", 72 input_filename_.c_str()); 73 return false; 74 } 75 if (feof(input_file_) != 0) { 76 return false; // No more frames to process. 77 } 78 return true; 79 } 80 81 size_t FrameReaderImpl::FrameLength() { return frame_length_in_bytes_; } 82 int FrameReaderImpl::NumberOfFrames() { return number_of_frames_; } 83 84 } // namespace test 85 } // namespace webrtc 86