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Fix low volume issue in Samsung

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Make Qt use QT_ANDROID_PRESET_VOICE_RECOGNITION device in order to set SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION in OpenSL ES
This commit is contained in:
Gabriel 2018-08-07 10:57:51 -03:00 committed by GitHub
parent f0d058cb61
commit 5bb9accd30
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 10 deletions

21
libraries/audio-client/src/AudioClient.cpp
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@ -53,6 +53,7 @@
#include "AudioHelpers.h"
#if defined(Q_OS_ANDROID)
#define VOICE_RECOGNITION "voicerecognition"
#include <QtAndroidExtras/QAndroidJniObject>
#endif
@ -465,7 +466,16 @@ QAudioDeviceInfo defaultAudioDeviceForMode(QAudio::Mode mode) {
return getNamedAudioDeviceForMode(mode, deviceName);
#endif
#if defined (Q_OS_ANDROID)
if (mode == QAudio::AudioInput) {
auto inputDevices = QAudioDeviceInfo::availableDevices(QAudio::AudioInput);
for (auto inputDevice : inputDevices) {
if (inputDevice.deviceName() == VOICE_RECOGNITION) {
return inputDevice;
}
}
}
#endif
// fallback for failed lookup is the default device
return (mode == QAudio::AudioInput) ? QAudioDeviceInfo::defaultInputDevice() : QAudioDeviceInfo::defaultOutputDevice();
}
@ -486,15 +496,6 @@ bool nativeFormatForAudioDevice(const QAudioDeviceInfo& audioDevice,
audioFormat.setSampleType(QAudioFormat::SignedInt);
audioFormat.setByteOrder(QAudioFormat::LittleEndian);
#if defined(Q_OS_ANDROID)
// Using the HW sample rate (AUDIO_INPUT_FLAG_FAST) in some samsung phones causes a low volume at input stream
// Changing the sample rate forces a resampling that (in samsung) amplifies +18 dB
QAndroidJniObject brand = QAndroidJniObject::getStaticObjectField<jstring>("android/os/Build", "BRAND");
if (audioDevice == QAudioDeviceInfo::defaultInputDevice() && brand.toString().contains("samsung", Qt::CaseInsensitive)) {
audioFormat.setSampleRate(24000);
}
#endif
if (!audioDevice.isFormatSupported(audioFormat)) {
qCWarning(audioclient) << "The native format is" << audioFormat << "but isFormatSupported() failed.";
return false;