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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
namespace audio {
dictionary OutputDeviceInfo {
// The unique identifier of the audio output device.
DOMString id;
// The user-friendly name (e.g. "Bose Amplifier").
DOMString name;
// True if this is the current active device.
boolean isActive;
// True if this is muted.
boolean isMuted;
// The output volume ranging from 0.0 to 1.0.
double volume;
};
dictionary InputDeviceInfo {
// The unique identifier of the audio input device.
DOMString id;
// The user-friendly name (e.g. "USB Microphone").
DOMString name;
// True if this is the current active device.
boolean isActive;
// True if this is muted.
boolean isMuted;
// The input gain ranging from 0.0 to 1.0.
double gain;
};
dictionary DeviceProperties {
// True if this is muted.
boolean isMuted;
// If this is an output device then this field indicates the output volume.
// If this is an input device then this field is ignored.
double? volume;
// If this is an input device then this field indicates the input gain.
// If this is an output device then this field is ignored.
double? gain;
};
callback GetInfoCallback = void(OutputDeviceInfo[] outputInfo,
InputDeviceInfo[] inputInfo);
callback SetActiveDevicesCallback = void();
callback SetPropertiesCallback = void();
interface Functions {
// Get the information of all audio output and input devices.
static void getInfo(GetInfoCallback callback);
// Select a subset of audio devices as active.
static void setActiveDevices(DOMString[] ids,
SetActiveDevicesCallback callback);
// Sets the properties for the input or output device.
static void setProperties(DOMString id,
DeviceProperties properties,
SetPropertiesCallback callback);
};
interface Events {
// Fired when anything changes to the audio device configuration.
// TODO(hshi): as suggested by mpcomplete this should pass down the same
// data as GetInfoCallback. Implement this once we have getInfo working.
static void onDeviceChanged();
};
};
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