1 /*
2 * Copyright 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "common/OboeDebug.h"
18 #include "InputStreamCallbackAnalyzer.h"
19
getPeakLevel(int index)20 double InputStreamCallbackAnalyzer::getPeakLevel(int index) {
21 if (mPeakDetectors == nullptr) {
22 LOGE("%s() called before setup()", __func__);
23 return -1.0;
24 } else if (index < 0 || index >= mNumChannels) {
25 LOGE("%s(), index out of range, 0 <= %d < %d", __func__, index, mNumChannels);
26 return -2.0;
27 }
28 return mPeakDetectors[index].getLevel();
29 }
30
onAudioReady(oboe::AudioStream * audioStream,void * audioData,int numFrames)31 oboe::DataCallbackResult InputStreamCallbackAnalyzer::onAudioReady(
32 oboe::AudioStream *audioStream,
33 void *audioData,
34 int numFrames) {
35 int32_t channelCount = audioStream->getChannelCount();
36
37 maybeHang(getNanoseconds());
38 printScheduler();
39 mInputConverter->convertToInternalOutput(numFrames * channelCount, audioData);
40 float *floatData = (float *) mInputConverter->getOutputBuffer();
41 if (mRecording != nullptr) {
42 mRecording->write(floatData, numFrames);
43 }
44 int32_t sampleIndex = 0;
45 for (int iFrame = 0; iFrame < numFrames; iFrame++) {
46 for (int iChannel = 0; iChannel < channelCount; iChannel++) {
47 float sample = floatData[sampleIndex++];
48 mPeakDetectors[iChannel].process(sample);
49 }
50 }
51
52 audioStream->waitForAvailableFrames(mMinimumFramesBeforeRead, oboe::kNanosPerSecond);
53
54 return oboe::DataCallbackResult::Continue;
55 }
56