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1 /* | |
2 * Copyright (c) 2012 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/engine_configurations.h" | |
12 #include "webrtc/modules/media_file/media_file.h" | |
13 #include "webrtc/modules/utility/source/file_recorder_impl.h" | |
14 #include "webrtc/system_wrappers/include/logging.h" | |
15 | |
16 namespace webrtc { | |
17 FileRecorder* FileRecorder::CreateFileRecorder(uint32_t instanceID, | |
18 FileFormats fileFormat) | |
19 { | |
20 return new FileRecorderImpl(instanceID, fileFormat); | |
21 } | |
22 | |
23 void FileRecorder::DestroyFileRecorder(FileRecorder* recorder) | |
24 { | |
25 delete recorder; | |
26 } | |
27 | |
28 FileRecorderImpl::FileRecorderImpl(uint32_t instanceID, | |
29 FileFormats fileFormat) | |
30 : _instanceID(instanceID), | |
31 _fileFormat(fileFormat), | |
32 _moduleFile(MediaFile::CreateMediaFile(_instanceID)), | |
33 codec_info_(), | |
34 _audioBuffer(), | |
35 _audioEncoder(instanceID), | |
36 _audioResampler() | |
37 { | |
38 } | |
39 | |
40 FileRecorderImpl::~FileRecorderImpl() | |
41 { | |
42 MediaFile::DestroyMediaFile(_moduleFile); | |
43 } | |
44 | |
45 FileFormats FileRecorderImpl::RecordingFileFormat() const | |
46 { | |
47 return _fileFormat; | |
48 } | |
49 | |
50 int32_t FileRecorderImpl::RegisterModuleFileCallback( | |
51 FileCallback* callback) | |
52 { | |
53 if(_moduleFile == NULL) | |
54 { | |
55 return -1; | |
56 } | |
57 return _moduleFile->SetModuleFileCallback(callback); | |
58 } | |
59 | |
60 int32_t FileRecorderImpl::StartRecordingAudioFile( | |
61 const char* fileName, | |
62 const CodecInst& codecInst, | |
63 uint32_t notificationTimeMs) | |
64 { | |
65 if(_moduleFile == NULL) | |
66 { | |
67 return -1; | |
68 } | |
69 codec_info_ = codecInst; | |
70 int32_t retVal = 0; | |
71 retVal =_moduleFile->StartRecordingAudioFile(fileName, _fileFormat, | |
72 codecInst, | |
73 notificationTimeMs); | |
74 | |
75 if( retVal == 0) | |
76 { | |
77 retVal = SetUpAudioEncoder(); | |
78 } | |
79 if( retVal != 0) | |
80 { | |
81 LOG(LS_WARNING) << "Failed to initialize file " << fileName | |
82 << " for recording."; | |
83 | |
84 if(IsRecording()) | |
85 { | |
86 StopRecording(); | |
87 } | |
88 } | |
89 return retVal; | |
90 } | |
91 | |
92 int32_t FileRecorderImpl::StartRecordingAudioFile( | |
93 OutStream& destStream, | |
94 const CodecInst& codecInst, | |
95 uint32_t notificationTimeMs) | |
96 { | |
97 codec_info_ = codecInst; | |
98 int32_t retVal = _moduleFile->StartRecordingAudioStream( | |
99 destStream, | |
100 _fileFormat, | |
101 codecInst, | |
102 notificationTimeMs); | |
103 | |
104 if( retVal == 0) | |
105 { | |
106 retVal = SetUpAudioEncoder(); | |
107 } | |
108 if( retVal != 0) | |
109 { | |
110 LOG(LS_WARNING) << "Failed to initialize outStream for recording."; | |
111 | |
112 if(IsRecording()) | |
113 { | |
114 StopRecording(); | |
115 } | |
116 } | |
117 return retVal; | |
118 } | |
119 | |
120 int32_t FileRecorderImpl::StopRecording() | |
121 { | |
122 memset(&codec_info_, 0, sizeof(CodecInst)); | |
123 return _moduleFile->StopRecording(); | |
124 } | |
125 | |
126 bool FileRecorderImpl::IsRecording() const | |
127 { | |
128 return _moduleFile->IsRecording(); | |
129 } | |
130 | |
131 int32_t FileRecorderImpl::RecordAudioToFile( | |
132 const AudioFrame& incomingAudioFrame) | |
133 { | |
134 if (codec_info_.plfreq == 0) | |
135 { | |
136 LOG(LS_WARNING) << "RecordAudioToFile() recording audio is not " | |
137 << "turned on."; | |
138 return -1; | |
139 } | |
140 AudioFrame tempAudioFrame; | |
141 tempAudioFrame.samples_per_channel_ = 0; | |
142 if( incomingAudioFrame.num_channels_ == 2 && | |
143 !_moduleFile->IsStereo()) | |
144 { | |
145 // Recording mono but incoming audio is (interleaved) stereo. | |
146 tempAudioFrame.num_channels_ = 1; | |
147 tempAudioFrame.sample_rate_hz_ = incomingAudioFrame.sample_rate_hz_; | |
148 tempAudioFrame.samples_per_channel_ = | |
149 incomingAudioFrame.samples_per_channel_; | |
150 for (size_t i = 0; | |
151 i < (incomingAudioFrame.samples_per_channel_); i++) | |
152 { | |
153 // Sample value is the average of left and right buffer rounded to | |
154 // closest integer value. Note samples can be either 1 or 2 byte. | |
155 tempAudioFrame.data_[i] = | |
156 ((incomingAudioFrame.data_[2 * i] + | |
157 incomingAudioFrame.data_[(2 * i) + 1] + 1) >> 1); | |
158 } | |
159 } | |
160 else if( incomingAudioFrame.num_channels_ == 1 && | |
161 _moduleFile->IsStereo()) | |
162 { | |
163 // Recording stereo but incoming audio is mono. | |
164 tempAudioFrame.num_channels_ = 2; | |
165 tempAudioFrame.sample_rate_hz_ = incomingAudioFrame.sample_rate_hz_; | |
166 tempAudioFrame.samples_per_channel_ = | |
167 incomingAudioFrame.samples_per_channel_; | |
168 for (size_t i = 0; | |
169 i < (incomingAudioFrame.samples_per_channel_); i++) | |
170 { | |
171 // Duplicate sample to both channels | |
172 tempAudioFrame.data_[2*i] = | |
173 incomingAudioFrame.data_[i]; | |
174 tempAudioFrame.data_[2*i+1] = | |
175 incomingAudioFrame.data_[i]; | |
176 } | |
177 } | |
178 | |
179 const AudioFrame* ptrAudioFrame = &incomingAudioFrame; | |
180 if(tempAudioFrame.samples_per_channel_ != 0) | |
181 { | |
182 // If ptrAudioFrame is not empty it contains the audio to be recorded. | |
183 ptrAudioFrame = &tempAudioFrame; | |
184 } | |
185 | |
186 // Encode the audio data before writing to file. Don't encode if the codec | |
187 // is PCM. | |
188 // NOTE: stereo recording is only supported for WAV files. | |
189 // TODO (hellner): WAV expect PCM in little endian byte order. Not | |
190 // "encoding" with PCM coder should be a problem for big endian systems. | |
191 size_t encodedLenInBytes = 0; | |
192 if (_fileFormat == kFileFormatPreencodedFile || | |
193 STR_CASE_CMP(codec_info_.plname, "L16") != 0) | |
194 { | |
195 if (_audioEncoder.Encode(*ptrAudioFrame, _audioBuffer, | |
196 encodedLenInBytes) == -1) | |
197 { | |
198 LOG(LS_WARNING) << "RecordAudioToFile() codec " | |
199 << codec_info_.plname | |
200 << " not supported or failed to encode stream."; | |
201 return -1; | |
202 } | |
203 } else { | |
204 size_t outLen = 0; | |
205 _audioResampler.ResetIfNeeded(ptrAudioFrame->sample_rate_hz_, | |
206 codec_info_.plfreq, | |
207 ptrAudioFrame->num_channels_); | |
208 _audioResampler.Push(ptrAudioFrame->data_, | |
209 ptrAudioFrame->samples_per_channel_ * | |
210 ptrAudioFrame->num_channels_, | |
211 (int16_t*)_audioBuffer, | |
212 MAX_AUDIO_BUFFER_IN_BYTES, outLen); | |
213 encodedLenInBytes = outLen * sizeof(int16_t); | |
214 } | |
215 | |
216 // Codec may not be operating at a frame rate of 10 ms. Whenever enough | |
217 // 10 ms chunks of data has been pushed to the encoder an encoded frame | |
218 // will be available. Wait until then. | |
219 if (encodedLenInBytes) | |
220 { | |
221 if (WriteEncodedAudioData(_audioBuffer, encodedLenInBytes) == -1) | |
222 { | |
223 return -1; | |
224 } | |
225 } | |
226 return 0; | |
227 } | |
228 | |
229 int32_t FileRecorderImpl::SetUpAudioEncoder() | |
230 { | |
231 if (_fileFormat == kFileFormatPreencodedFile || | |
232 STR_CASE_CMP(codec_info_.plname, "L16") != 0) | |
233 { | |
234 if(_audioEncoder.SetEncodeCodec(codec_info_) == -1) | |
235 { | |
236 LOG(LS_ERROR) << "SetUpAudioEncoder() codec " | |
237 << codec_info_.plname << " not supported."; | |
238 return -1; | |
239 } | |
240 } | |
241 return 0; | |
242 } | |
243 | |
244 int32_t FileRecorderImpl::codec_info(CodecInst& codecInst) const | |
245 { | |
246 if(codec_info_.plfreq == 0) | |
247 { | |
248 return -1; | |
249 } | |
250 codecInst = codec_info_; | |
251 return 0; | |
252 } | |
253 | |
254 int32_t FileRecorderImpl::WriteEncodedAudioData(const int8_t* audioBuffer, | |
255 size_t bufferLength) | |
256 { | |
257 return _moduleFile->IncomingAudioData(audioBuffer, bufferLength); | |
258 } | |
259 } // namespace webrtc | |
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