OS X TTS: add pitch setting.

The current TTS configuration doesn't allow querying the system values so it
currently can't be displayed. A value of 0 will use the system default. The
default pitch is dependent on the voice; most voices should have a default
pitch of 45 - 55.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29673 a1c6a512-1295-4272-9138-f99709370657

rbutil/rbutilqt/base/rbsettings.cpp

@@ -46,6 +46,7 @@ const static struct {
     { RbSettings::VoiceLanguage,        "voicelanguage",        "" },
     { RbSettings::TtsLanguage,          ":tts:/language",       "" },
     { RbSettings::TtsOptions,           ":tts:/options",        "" },
+    { RbSettings::TtsPitch,             ":tts:/pitch",          "0" },
     { RbSettings::TtsPath,              ":tts:/path",           "" },
     { RbSettings::TtsVoice,             ":tts:/voice",          "" },
     { RbSettings::EncoderPath,          ":encoder:/encoderpath",        "" },

rbutil/rbutilqt/base/rbsettings.h

@@ -48,6 +48,7 @@ class RbSettings : public QObject
             TtsOptions,
             TtsPath,
             TtsVoice,
+            TtsPitch,
             EncoderPath,
             EncoderOptions,
             WavtrimThreshold,

rbutil/rbutilqt/base/ttscarbon.cpp

@@ -89,6 +89,12 @@ bool TTSCarbon::start(QString *errStr)
                                     RbSettings::TtsSpeed).toInt());
     if(rate != 0)
         SetSpeechRate(m_channel, rate);
+
+    Fixed pitch = (Fixed)(0x10000 * RbSettings::subValue("carbon",
+                                    RbSettings::TtsPitch).toInt());
+    if(pitch != 0)
+        SetSpeechPitch(m_channel, pitch);
+
     return (error == 0) ? true : false;
 }
 
@@ -139,6 +145,14 @@ void TTSCarbon::generateSettings(void)
                                 tr("Speed (words/min):"), speed, 80, 500,
                                 EncTtsSetting::eNOBTN);
     insertSetting(ConfigSpeed, setting);
+
+    // pitch
+    int pitch = RbSettings::subValue("carbon", RbSettings::TtsPitch).toInt();
+    setting = new EncTtsSetting(this, EncTtsSetting::eINT,
+                                tr("Pitch (0 for default):"), pitch, 0, 65,
+                                EncTtsSetting::eNOBTN);
+    insertSetting(ConfigPitch, setting);
+
 }
 
 
@@ -149,6 +163,8 @@ void TTSCarbon::saveSettings(void)
                             getSetting(ConfigVoice)->current().toString());
     RbSettings::setSubValue("carbon", RbSettings::TtsSpeed,
                             getSetting(ConfigSpeed)->current().toInt());
+    RbSettings::setSubValue("carbon", RbSettings::TtsPitch,
+                            getSetting(ConfigPitch)->current().toInt());
     RbSettings::sync();
 }
 

rbutil/rbutilqt/base/ttscarbon.h

@@ -33,7 +33,8 @@ class TTSCarbon : public TTSBase
     enum ConfigValuesCarbon
     {
         ConfigVoice,
-        ConfigSpeed
+        ConfigSpeed,
+        ConfigPitch
     };
     public:
         TTSCarbon(QObject *parent = NULL);