andrew@webrtc.org | b015cbe | 2012-10-22 18:19:23 +0000 | [diff] [blame^] | 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 | |
| 17 | namespace webrtc { |
| 18 | namespace test { |
| 19 | |
| 20 | FrameReaderImpl::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 | |
| 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 %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 | |
| 53 | void FrameReaderImpl::Close() { |
| 54 | if (input_file_ != NULL) { |
| 55 | fclose(input_file_); |
| 56 | input_file_ = NULL; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | bool 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 |