revert to arecord

ampmanager.cpp

@@ -1,63 +1,19 @@
 #include "ampmanager.h"
 
-AmpManager::AmpManager(Microcontroller *micro, int relayNumber, QAudioDeviceInfo device, QObject *parent) : QObject(parent), _micro(micro), _relayNumber(relayNumber)
+AmpManager::AmpManager(Microcontroller *micro, int relayNumber, QObject *parent) : QObject(parent), _micro(micro), _relayNumber(relayNumber)
 {
-    /* Open PCM device for recording (capture). */
+  silenceCount = 0;
-    rc = snd_pcm_open(&handle, "default", SND_PCM_STREAM_CAPTURE, 0);
-    if (rc < 0) {
-      fprintf(stderr, "unable to open pcm device: %s\n", snd_strerror(rc));
-      exit(1);
-    }
-
-    /* Allocate a hardware parameters object. */
-    snd_pcm_hw_params_alloca(&params);
-
-    /* Fill it in with default values. */
-    snd_pcm_hw_params_any(handle, params);
-
-    /* Set the desired hardware parameters. */
-
-    /* Interleaved mode */
-    snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
-
-    /* Signed 16-bit little-endian format */
-    snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);
-s
-    /* One channel (mono) */
-    snd_pcm_hw_params_set_channels(handle, params, 1);
-
-    /* 16000 bits/second sampling rate */
-    val = 16000;
-    snd_pcm_hw_params_set_rate_near(handle, params, &val, &dir);
-
-    /* Set period size to 2048 frames. */
-    frames = 2048;
-    snd_pcm_hw_params_set_period_size_near(handle, params, &frames, &dir);
-
-    /* Write the parameters to the driver */
-    rc = snd_pcm_hw_params(handle, params);
-    if (rc < 0) {
-      fprintf(stderr, "unable to set hw parameters: %s\n", snd_strerror(rc));
-      exit(1);
-    }
-
-    /* Use a buffer large enough to hold one period */
-    snd_pcm_hw_params_get_period_size(params, &frames, &dir);
-    size = frames * 2; /* 2 bytes/sample, 1 channels */
-    char* buffer = new char[size]();
 }
 
 AmpManager::~AmpManager()
 {
     abort();
-    snd_pcm_drain(handle);
-    snd_pcm_close(handle);
 }
 
 void AmpManager::run()
 {
     abort();
-    _ioDevice = _audioDevice->start();
+    arecord.start( "arecord -D front  -" );
     loop.reset(new QEventLoop);
     QTimer timer;
     connect(&timer, SIGNAL(timeout()), this, SLOT(doTick()));
@@ -73,17 +29,18 @@ void AmpManager::run()
 
 void AmpManager::abort()
 {
-    if (!loop.isNull())loop->quit();
+    if (!loop.isNull()){
-    if(_audioDevice->error() == 0)_audioDevice->stop();
+        loop->quit();
-    if(_ioDevice != nullptr)delete _ioDevice;
+    }
+    if(arecord.state() == QProcess::Running)arecord.close();
     qDebug()<<"Stop Auto Amp Manager\n";
 }
 
 void AmpManager::doTick()
 {
-    if(_audioDevice->error() == 0 && _ioDevice != nullptr)
+    if(arecord.state() == QProcess::Running)
     {
-       QByteArray buffer = _ioDevice->readAll();
+       QByteArray buffer = arecord.readAllStandardOutput();
        for(long i = 0; i < buffer.size(); i++)
        {
            if((uint8_t) buffer.at(i) != 128)

ampmanager.h

@@ -8,11 +8,9 @@
 #include <QScopedPointer>
 #include <QEventLoop>
 #include <QTimer>
+#include <QProcess>
 #include <QByteArray>
 #include <QtDebug>
-#include <QAudioDeviceInfo>
-#include <alsa/asoundlib.h>
-
 
 #include "microcontroller.h"
 
@@ -21,7 +19,7 @@ class AmpManager : public QObject, public QRunnable
 {
     Q_OBJECT
 public:
-    explicit AmpManager(Microcontroller *micro, int relayNumber, QAudioDeviceInfo device, QObject *parent = 0);
+    explicit AmpManager(Microcontroller *micro, int relayNumber, QObject *parent = 0);
     ~AmpManager();
 
 
@@ -38,12 +36,8 @@ private:
     Microcontroller *_micro;
     int _relayNumber;
 
-    char* _buffer;
 
-    snd_pcm_t *handle;
+    QProcess arecord;
-    snd_pcm_hw_params_t *params;
-    snd_pcm_uframes_t frames;
-    char *buffer;
 
     bool relayState = false;