2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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.
17 #include "testing/gtest/include/gtest/gtest.h"
18 #include "webrtc/modules/interface/module_common_types.h"
22 #define MAX_FILE_NAME_LENGTH_BYTE 500
33 timestamp_ = (((uint32_t) rand() & 0x0000FFFF) << 16) |
34 ((uint32_t) rand() & 0x0000FFFF);
37 PCMFile::PCMFile(uint32_t timestamp)
46 timestamp_ = timestamp;
49 int16_t PCMFile::ChooseFile(std::string* file_name, int16_t max_len,
50 uint16_t* frequency_hz) {
51 char tmp_name[MAX_FILE_NAME_LENGTH_BYTE];
53 EXPECT_TRUE(fgets(tmp_name, MAX_FILE_NAME_LENGTH_BYTE, stdin) != NULL);
54 tmp_name[MAX_FILE_NAME_LENGTH_BYTE - 1] = '\0';
57 // Removing trailing spaces.
58 while ((isspace(tmp_name[n]) || iscntrl(tmp_name[n])) && (tmp_name[n] != 0)
59 && (n < MAX_FILE_NAME_LENGTH_BYTE)) {
63 memmove(tmp_name, &tmp_name[n], MAX_FILE_NAME_LENGTH_BYTE - n);
66 // Removing trailing spaces.
67 n = (int16_t)(strlen(tmp_name) - 1);
69 while ((isspace(tmp_name[n]) || iscntrl(tmp_name[n])) && (n >= 0)) {
74 tmp_name[n + 1] = '\0';
77 int16_t len = (int16_t) strlen(tmp_name);
82 std::string tmp_string(tmp_name, len + 1);
83 *file_name = tmp_string;
85 printf("Enter the sampling frequency (in Hz) of the above file [%u]: ",
87 EXPECT_TRUE(fgets(tmp_name, 10, stdin) != NULL);
88 uint16_t tmp_frequency = (uint16_t) atoi(tmp_name);
89 if (tmp_frequency > 0) {
90 *frequency_hz = tmp_frequency;
95 void PCMFile::Open(const std::string& file_name, uint16_t frequency,
96 const char* mode, bool auto_rewind) {
97 if ((pcm_file_ = fopen(file_name.c_str(), mode)) == NULL) {
98 printf("Cannot open file %s.\n", file_name.c_str());
99 ADD_FAILURE() << "Unable to read file";
101 frequency_ = frequency;
102 samples_10ms_ = (uint16_t)(frequency_ / 100);
103 auto_rewind_ = auto_rewind;
104 end_of_file_ = false;
108 int32_t PCMFile::SamplingFrequency() const {
112 uint16_t PCMFile::PayloadLength10Ms() const {
113 return samples_10ms_;
116 int32_t PCMFile::Read10MsData(AudioFrame& audio_frame) {
117 uint16_t channels = 1;
122 int32_t payload_size = (int32_t) fread(audio_frame.data_, sizeof(uint16_t),
123 samples_10ms_ * channels, pcm_file_);
124 if (payload_size < samples_10ms_ * channels) {
125 for (int k = payload_size; k < samples_10ms_ * channels; k++) {
126 audio_frame.data_[k] = 0;
135 audio_frame.samples_per_channel_ = samples_10ms_;
136 audio_frame.sample_rate_hz_ = frequency_;
137 audio_frame.num_channels_ = channels;
138 audio_frame.timestamp_ = timestamp_;
139 timestamp_ += samples_10ms_;
140 return samples_10ms_;
143 void PCMFile::Write10MsData(AudioFrame& audio_frame) {
144 if (audio_frame.num_channels_ == 1) {
146 if (fwrite(audio_frame.data_, sizeof(uint16_t),
147 audio_frame.samples_per_channel_, pcm_file_) !=
148 static_cast<size_t>(audio_frame.samples_per_channel_)) {
152 int16_t* stereo_audio = new int16_t[2 * audio_frame.samples_per_channel_];
154 for (k = 0; k < audio_frame.samples_per_channel_; k++) {
155 stereo_audio[k << 1] = audio_frame.data_[k];
156 stereo_audio[(k << 1) + 1] = audio_frame.data_[k];
158 if (fwrite(stereo_audio, sizeof(int16_t),
159 2 * audio_frame.samples_per_channel_, pcm_file_) !=
160 static_cast<size_t>(2 * audio_frame.samples_per_channel_)) {
163 delete[] stereo_audio;
166 if (fwrite(audio_frame.data_, sizeof(int16_t),
167 audio_frame.num_channels_ * audio_frame.samples_per_channel_,
169 static_cast<size_t>(audio_frame.num_channels_ *
170 audio_frame.samples_per_channel_)) {
176 void PCMFile::Write10MsData(int16_t* playout_buffer, uint16_t length_smpls) {
177 if (fwrite(playout_buffer, sizeof(uint16_t), length_smpls, pcm_file_) !=
183 void PCMFile::Close() {
188 void PCMFile::Rewind() {
190 end_of_file_ = false;
193 bool PCMFile::Rewinded() {
197 void PCMFile::SaveStereo(bool is_stereo) {
198 save_stereo_ = is_stereo;
201 void PCMFile::ReadStereo(bool is_stereo) {
202 read_stereo_ = is_stereo;
205 } // namespace webrtc