TTS: Create a TTS skeleton

8 files changed, 192 insertions, 0 deletions

diff --git a/backends/module.mk b/backends/module.mk
index ee123434d8..42c840436b 100644
--- a/backends/module.mk
+++ b/backends/module.mk
@@ -344,5 +344,10 @@ MODULE_OBJS += \
 	saves/recorder/recorder-saves.o
 endif
 
+ifdef USE_LINUX_TTS
+MODULE_OBJS += \
+	text-to-speech/linux/linux-text-to-speech.o
+endif
+
 # Include common rules
 include $(srcdir)/rules.mk
diff --git a/backends/platform/sdl/posix/posix.cpp b/backends/platform/sdl/posix/posix.cpp
index b204daa643..50a1ccdc58 100644
--- a/backends/platform/sdl/posix/posix.cpp
+++ b/backends/platform/sdl/posix/posix.cpp
@@ -54,6 +54,10 @@
 #ifdef HAS_POSIX_SPAWN
 #include <spawn.h>
 #endif
+
+#ifdef USE_LINUX_TTS
+#include "backends/text-to-speech/linux/linux-text-to-speech.h"
+#endif
 extern char **environ;
 
 OSystem_POSIX::OSystem_POSIX(Common::String baseConfigName)
@@ -79,6 +83,11 @@ void OSystem_POSIX::initBackend() {
 	if (_savefileManager == 0)
 		_savefileManager = new POSIXSaveFileManager();
 
+#ifdef USE_LINUX_TTS
+	// Initialize Text to Speech manager
+	_textToSpeechManager = new LinuxTextToSpeechManager();
+#endif
+
 	// Invoke parent implementation of this method
 	OSystem_SDL::initBackend();
 
diff --git a/backends/text-to-speech/linux/linux-text-to-speech.cpp b/backends/text-to-speech/linux/linux-text-to-speech.cpp
new file mode 100644
index 0000000000..7a8e899595
--- /dev/null
+++ b/backends/text-to-speech/linux/linux-text-to-speech.cpp
@@ -0,0 +1,37 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "backends/text-to-speech/linux/linux-text-to-speech.h"
+
+#if defined(USE_LINUX_TTS)
+#include "common/translation.h"
+
+LinuxTextToSpeechManager::LinuxTextToSpeechManager() {
+}
+
+LinuxTextToSpeechManager::~LinuxTextToSpeechManager() {
+}
+
+#endif
diff --git a/backends/text-to-speech/linux/linux-text-to-speech.h b/backends/text-to-speech/linux/linux-text-to-speech.h
new file mode 100644
index 0000000000..ab9b2b6fe2
--- /dev/null
+++ b/backends/text-to-speech/linux/linux-text-to-speech.h
@@ -0,0 +1,40 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_TEXT_TO_SPEECH_LINUX_H
+#define BACKENDS_TEXT_TO_SPEECH_LINUX_H
+
+#include "common/scummsys.h"
+
+#if defined(USE_LINUX_TTS)
+
+#include "common/text-to-speech.h"
+
+class LinuxTextToSpeechManager : public Common::TextToSpeechManager {
+public:
+	LinuxTextToSpeechManager();
+	virtual ~LinuxTextToSpeechManager();
+};
+
+#endif
+
+#endif // BACKENDS_UPDATES_LINUX_H
diff --git a/common/system.cpp b/common/system.cpp
index 9f6dc60d22..8d1ab84a3d 100644
--- a/common/system.cpp
+++ b/common/system.cpp
@@ -31,6 +31,7 @@
 #include "common/updates.h"
 #include "common/dialogs.h"
 #include "common/textconsole.h"
+#include "common/text-to-speech.h"
 
 #include "backends/audiocd/default/default-audiocd.h"
 #include "backends/fs/fs-factory.h"
@@ -49,6 +50,9 @@ OSystem::OSystem() {
 #if defined(USE_UPDATES)
 	_updateManager = nullptr;
 #endif
+#if defined(USE_TTS)
+	_textToSpeechManager = nullptr;
+#endif
 #if defined(USE_SYSDIALOGS)
 	_dialogManager = nullptr;
 #endif
@@ -76,6 +80,11 @@ OSystem::~OSystem() {
 	_updateManager = nullptr;
 #endif
 
+#if defined(USE_TTS)
+	delete _textToSpeechManager;
+	_textToSpeechManager = 0;
+#endif
+
 #if defined(USE_SYSDIALOGS)
 	delete _dialogManager;
 	_dialogManager = nullptr;
diff --git a/common/system.h b/common/system.h
index 77bdcd0815..f17625e215 100644
--- a/common/system.h
+++ b/common/system.h
@@ -49,6 +49,9 @@ class TaskbarManager;
 #if defined(USE_UPDATES)
 class UpdateManager;
 #endif
+#if defined(USE_TTS)
+class TextToSpeechManager;
+#endif
 #if defined(USE_SYSDIALOGS)
 class DialogManager;
 #endif
@@ -184,6 +187,15 @@ protected:
 	Common::UpdateManager *_updateManager;
 #endif
 
+#if defined(USE_TTS)
+	/**
+	 * No default value is provided for _textToSpeechManager by OSystem.
+	 *
+	 * @note _textToSpeechManager is deleted by the OSystem destructor.
+	 */
+	Common::TextToSpeechManager *_textToSpeechManager;
+#endif
+
 #if defined(USE_SYSDIALOGS)
 	/**
 	 * No default value is provided for _dialogManager by OSystem.
@@ -1325,6 +1337,17 @@ public:
 	}
 #endif
 
+#if defined(USE_TTS)
+	/**
+	 * Returns the TextToSpeechManager, used to handle text to speech features.
+	 *
+	 * @return the TextToSpeechManager for the current architecture
+	 */
+	virtual Common::TextToSpeechManager *getTextToSpeechManager() {
+		return _textToSpeechManager;
+	}
+#endif
+
 #if defined(USE_SYSDIALOGS)
 	/**
 	 * Returns the DialogManager, used to handle system dialogs.
diff --git a/common/text-to-speech.h b/common/text-to-speech.h
new file mode 100644
index 0000000000..e95050e3f5
--- /dev/null
+++ b/common/text-to-speech.h
@@ -0,0 +1,45 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKENDS_TEXT_TO_SPEECH_ABSTRACT_H
+#define BACKENDS_TEXT_TO_SPEECH_ABSTRACT_H
+
+#if defined(USE_TTS)
+
+namespace Common {
+
+/**
+ * The TextToSpeechManager allows speech synthesis.
+ *
+ */
+class TextToSpeechManager {
+public:
+	TextToSpeechManager() {}
+	virtual ~TextToSpeechManager() {}
+
+};
+
+} // End of namespace Common
+
+#endif
+
+#endif // BACKENDS_TEXT_TO_SPEECH_ABSTRACT_H
diff --git a/configure b/configure
index dfbbdb7b9f..8cfe58473e 100755
--- a/configure
+++ b/configure
@@ -166,6 +166,8 @@ _updates=no
 _libunity=auto
 _dialogs=auto
 _iconv=auto
+_tts=auto
+_linux_tts=no
 # Default option behavior yes/no
 _debug_build=auto
 _release_build=auto
@@ -1250,6 +1252,8 @@ for ac_option in $@; do
 	--disable-updates)            _updates=no            ;;
 	--enable-libunity)            _libunity=yes          ;;
 	--disable-libunity)           _libunity=no           ;;
+	--enable-tts)                 _tts=yes               ;;
+	--disable-tts)                _tts=no                ;;
 	--enable-bink)                _bink=yes              ;;
 	--disable-bink)               _bink=no               ;;
 	--opengl-mode=*)
@@ -5357,6 +5361,26 @@ fi
 define_in_config_if_yes $_dialogs 'USE_SYSDIALOGS'
 
 #
+# Check whether to build TTS integration support
+#
+echo_n "Building text-to-speech integration support... "
+if test "$_tts" = "no"; then
+	echo "no"
+else
+	case $_host_os in
+	linux*)
+		echo "linux"
+		_tts=yes
+		_linux_tts=yes
+		;;
+	*)
+		;;
+	esac
+fi
+define_in_config_if_yes $_tts 'USE_TTS'
+define_in_config_if_yes $_linux_tts 'USE_LINUX_TTS'
+
+#
 # Check whether to build Bink video support
 #
 echo_n "Building Bink video support... "