blob: 5dccd9d45e149a5699cdf0ff69806ba2e2407b9c [file] [log] [blame]
// Copyright 2016 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.
module media.mojom;
import "media/mojo/interfaces/audio_parameters.mojom";
import "media/mojo/interfaces/media_types.mojom";
// An interface for controlling an audio output stream.
// On error, the message pipe is closed.
// To close the stream, just close the message pipe.
interface AudioOutputStream {
// Starts rendering audio.
// Stops rendering audio and sends a signal to the |socket_descriptor|
// indicating this.
// Sets volume. Volume must be in the range [0, 1].
SetVolume(double volume);
interface AudioOutputStreamProvider {
// Creates a new AudioOutputStream using |params|. |shared_buffer| and
// |socket_descriptor| are used to write data to the stream as defined
// in AudioDeviceThread. This means:
// * |shared_buffer| will be a writable handle to memory of the size needed
// by AudioDeviceThread for the specified params.
// * |socket_descriptor| is a descriptor from which a
// base::CancelableSyncSocket can be constructed.
// Can only be called once.
Acquire(AudioOutputStream& output_stream, AudioParameters params)
=> (handle<shared_buffer> shared_buffer, handle socket_descriptor);