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
FrameReaderImpl(std::string input_filename,size_t frame_length_in_bytes)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
~FrameReaderImpl()27 FrameReaderImpl::~FrameReaderImpl() {
28 Close();
29 }
30
Init()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
Close()54 void FrameReaderImpl::Close() {
55 if (input_file_ != NULL) {
56 fclose(input_file_);
57 input_file_ = NULL;
58 }
59 }
60
ReadFrame(uint8_t * source_buffer)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
FrameLength()81 size_t FrameReaderImpl::FrameLength() { return frame_length_in_bytes_; }
NumberOfFrames()82 int FrameReaderImpl::NumberOfFrames() { return number_of_frames_; }
83
84 } // namespace test
85 } // namespace webrtc
86