AudioDevices demo doesn't do anything on Windows

-put example audiodevices in layout.
-added more checking to testSettings() in win32 implementation.
-disabled objects in example audiodevices that are not editable.
-added more checking to alsa implementation for preferredFormat().
-changed internal strings from tr to QLatin1String.

Reviewed-by:Justin Mcpherson

1 files changed, 54 insertions, 13 deletions

diff --git a/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
index 4ed1b41..c944cf0 100644
--- a/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
+++ b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
@@ -81,13 +81,18 @@ QAudioFormat QAudioDeviceInfoPrivate::preferredFormat() const
         nearest.setByteOrder(QAudioFormat::LittleEndian);
         nearest.setSampleType(QAudioFormat::SignedInt);
         nearest.setSampleSize(16);
-        nearest.setCodec(tr("audio/pcm"));
+        nearest.setCodec(QLatin1String("audio/pcm"));
     } else {
         nearest.setFrequency(8000);
         nearest.setChannels(1);
-        nearest.setSampleType(QAudioFormat::SignedInt);
+        nearest.setSampleType(QAudioFormat::UnSignedInt);
         nearest.setSampleSize(8);
-        nearest.setCodec(tr("audio/pcm"));
+        nearest.setCodec(QLatin1String("audio/pcm"));
+        if(!testSettings(nearest)) {
+            nearest.setChannels(2);
+            nearest.setSampleSize(16);
+            nearest.setSampleType(QAudioFormat::SignedInt);
+        }
     }
     return nearest;
 }
@@ -145,9 +150,9 @@ bool QAudioDeviceInfoPrivate::open()
 {
     int err = 0;
     QString dev = device;
-    if(!dev.contains(tr("default"))) {
+    if(!dev.contains(QLatin1String("default"))) {
         int idx = snd_card_get_index(dev.toLocal8Bit().constData());
-        dev = QString(tr("hw:%1,0")).arg(idx);
+        dev = QString(QLatin1String("hw:%1,0")).arg(idx);
     }
     if(mode == QAudio::AudioOutput) {
         err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
@@ -172,16 +177,15 @@ bool QAudioDeviceInfoPrivate::testSettings(const QAudioFormat& format) const
 {
     // Set nearest to closest settings that do work.
     // See if what is in settings will work (return value).
-
     int err = 0;
     snd_pcm_t* handle;
     snd_pcm_hw_params_t *params;
     QString dev = device;
 
     // open()
-    if(!dev.contains(tr("default"))) {
+    if(!dev.contains(QLatin1String("default"))) {
         int idx = snd_card_get_index(dev.toLocal8Bit().constData());
-        dev = QString(tr("hw:%1,0")).arg(idx);
+        dev = QString(QLatin1String("hw:%1,0")).arg(idx);
     }
     if(mode == QAudio::AudioOutput) {
         err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
@@ -205,8 +209,45 @@ bool QAudioDeviceInfoPrivate::testSettings(const QAudioFormat& format) const
     snd_pcm_hw_params_alloca( &params );
     snd_pcm_hw_params_any( handle, params );
 
+    // set the values!
+    snd_pcm_hw_params_set_channels(handle,params,format.channels());
+    snd_pcm_hw_params_set_rate(handle,params,format.frequency(),dir);
+    switch(format.sampleSize()) {
+        case 8:
+            if(format.sampleType() == QAudioFormat::SignedInt)
+                snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S8);
+            else if(format.sampleType() == QAudioFormat::UnSignedInt)
+                snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U8);
+            break;
+        case 16:
+            if(format.sampleType() == QAudioFormat::SignedInt) {
+                if(format.byteOrder() == QAudioFormat::LittleEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
+                else if(format.byteOrder() == QAudioFormat::BigEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
+            } else if(format.sampleType() == QAudioFormat::UnSignedInt) {
+                if(format.byteOrder() == QAudioFormat::LittleEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_LE);
+                else if(format.byteOrder() == QAudioFormat::BigEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_BE);
+            }
+            break;
+        case 32:
+            if(format.sampleType() == QAudioFormat::SignedInt) {
+                if(format.byteOrder() == QAudioFormat::LittleEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_LE);
+                else if(format.byteOrder() == QAudioFormat::BigEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_BE);
+            } else if(format.sampleType() == QAudioFormat::UnSignedInt) {
+                if(format.byteOrder() == QAudioFormat::LittleEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_LE);
+                else if(format.byteOrder() == QAudioFormat::BigEndian)
+                    snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_BE);
+            }
+    }
+
     // For now, just accept only audio/pcm codec
-    if(!format.codec().startsWith(tr("audio/pcm"))) {
+    if(!format.codec().startsWith(QLatin1String("audio/pcm"))) {
         err=-1;
     } else
         testCodec = true;
@@ -313,7 +354,7 @@ void QAudioDeviceInfoPrivate::updateLists()
     typez.append(QAudioFormat::SignedInt);
     typez.append(QAudioFormat::UnSignedInt);
     typez.append(QAudioFormat::Float);
-    codecz.append(tr("audio/pcm"));
+    codecz.append(QLatin1String("audio/pcm"));
     close();
 }
 
@@ -346,10 +387,10 @@ QList<QByteArray> QAudioDeviceInfoPrivate::deviceList(QAudio::Mode mode)
             if(io == NULL)
                 _m = mode;
 
-            QString str = tr(name);
+            QString str = QLatin1String(name);
 
-            if(str.contains(tr("default"))) {
-                int pos = str.indexOf(tr("="),0);
+            if(str.contains(QLatin1String("default"))) {
+                int pos = str.indexOf(QLatin1String("="),0);
                 devices.append(str.mid(pos+1).toLocal8Bit().constData());
             }
         }