tts_extern.cc

// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <unistd.h>

#include <chromeos/dbus/dbus.h>
#include <chromeos/dbus/service_constants.h>
#include <chromeos/glib/object.h>

#include "bindings/client.h"
#include "marshal.h"  // NOLINT
#include "tts_extern.h"

namespace chromeos {

bool Speak(const char* text) {
  g_type_init();
  chromeos::dbus::BusConnection bus = chromeos::dbus::GetSystemBusConnection();
  chromeos::dbus::Proxy tts_proxy(bus,
      speech_synthesis::kSpeechSynthesizerServiceName,
      speech_synthesis::kSpeechSynthesizerServicePath,
      speech_synthesis::kSpeechSynthesizerInterface);
  DCHECK(tts_proxy.gproxy()) << "Failed to acquire proxy";
  if (!::org_chromium_SpeechSynthesizerInterface_speak(
      tts_proxy.gproxy(), text, NULL)) {
    return false;
  }
  return true;
}

bool Stop() {
  g_type_init();
  chromeos::dbus::BusConnection bus = chromeos::dbus::GetSystemBusConnection();
  chromeos::dbus::Proxy tts_proxy(bus,
      speech_synthesis::kSpeechSynthesizerServiceName,
      speech_synthesis::kSpeechSynthesizerServicePath,
      speech_synthesis::kSpeechSynthesizerInterface);
  DCHECK(tts_proxy.gproxy()) << "Failed to acquire proxy";
  if (!::org_chromium_SpeechSynthesizerInterface_stop(
      tts_proxy.gproxy(), NULL)) {
    return false;
  }
  return true;
}

bool IsSpeaking() {
  g_type_init();
  chromeos::dbus::BusConnection bus = chromeos::dbus::GetSystemBusConnection();
  chromeos::dbus::Proxy tts_proxy(bus,
      speech_synthesis::kSpeechSynthesizerServiceName,
      speech_synthesis::kSpeechSynthesizerServicePath,
      speech_synthesis::kSpeechSynthesizerInterface);
  DCHECK(tts_proxy.gproxy()) << "Failed to acquire proxy";
  gboolean done;
  return ::org_chromium_SpeechSynthesizerInterface_is_speaking(
      tts_proxy.gproxy(), &done, NULL);
}

extern "C"
bool ChromeOSSpeak(const char* text) {
  return Speak(text);
}

extern "C"
bool ChromeOSStop() {
  return Stop();
}

extern "C"
bool ChromeOSIsSpeaking() {
  return IsSpeaking();
}

extern "C"
void ChromeOSWaitUntilFinished() {
  while (IsSpeaking()) {
    usleep(100000); // Wait for 100 ms = 100000 us
  }
}

}  // namespace chromeos