mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 08:16:09 +03:00
83 lines
3.3 KiB
Plaintext
83 lines
3.3 KiB
Plaintext
// 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_data_pipe.mojom";
|
|
import "media/mojo/interfaces/audio_parameters.mojom";
|
|
import "media/mojo/interfaces/media_types.mojom";
|
|
|
|
// An interface for controlling an audio output stream.
|
|
// To close the stream, just close the message pipe.
|
|
// The AudioOutputStream may expire due to other reasons than actual errors,
|
|
// such as user-initiated actions to close the stream. In this case, the
|
|
// connection is closed without calling OnError.
|
|
interface AudioOutputStream {
|
|
// Starts rendering audio.
|
|
Play();
|
|
|
|
// Stops rendering audio and sends a signal on the AudioDataPipe indicating
|
|
// this.
|
|
Pause();
|
|
|
|
// Sets volume. Volume must be in the range [0, 1].
|
|
SetVolume(double volume);
|
|
};
|
|
|
|
// An AudioOutputStreamObserver gets notifications about events related to an
|
|
// AudioOutputStream. DidStartPlaying() is invoked when the stream starts
|
|
// playing and it is eventually followed by a DidStopPlaying() call. A stream
|
|
// may start playing again after being stopped.
|
|
//
|
|
// Note: It is possible that DidStopPlaying() is not called in shutdown
|
|
// situations.
|
|
interface AudioOutputStreamObserver {
|
|
// These values are persisted to logs. Entries should not be renumbered and
|
|
// numeric values should never be reused.
|
|
enum DisconnectReason {
|
|
// The Disconnect reason wasn't given explicitly. This probably means that
|
|
// the audio service crashed.
|
|
kDefault = 0,
|
|
// This code is used as disconnect reason when stream ended or failed to
|
|
// start due to an unrecoverable platform error, e.g. the hardware device is
|
|
// busy or disconnected.
|
|
kPlatformError = 1,
|
|
kTerminatedByClient = 2,
|
|
kStreamCreationFailed = 3,
|
|
kDocumentDestroyed = 4,
|
|
};
|
|
|
|
// This notification indicates that the stream started playing. The stream
|
|
// should be considered non-audible until a DidChangeAudibleState() call says
|
|
// otherwise.
|
|
DidStartPlaying();
|
|
|
|
// This notification indicates that the stream stopped playing. The stream
|
|
// should be considered no longer audible at this time; no further
|
|
// audible-state change notifications will be issued.
|
|
DidStopPlaying();
|
|
|
|
// This notification carries the latest value of the audible state of the
|
|
// stream. Multiple instances of this notification may occur after
|
|
// DidStartPlaying() and before DidStopPlaying().
|
|
DidChangeAudibleState(bool is_audible);
|
|
};
|
|
|
|
interface AudioOutputStreamProvider {
|
|
// Creates a new AudioOutputStream using |params|. |client| is notified when
|
|
// the stream is ready. The stream lifetime is bound by the lifetime of
|
|
// |client|. On error, the |client| will have a disconnect reason among the
|
|
// specified ones in AudioOutputStreamProviderClient.
|
|
// Can only be called once.
|
|
Acquire(AudioParameters params, AudioOutputStreamProviderClient client);
|
|
};
|
|
|
|
interface AudioOutputStreamProviderClient {
|
|
// |stream| is used to pass commands to the stream, and |data_pipe| is used
|
|
// to transfer the audio data.
|
|
// TODO(https://crbug.com/787806): Currently, this will be called at most
|
|
// once. In the future, it may be called several times.
|
|
Created(AudioOutputStream stream, AudioDataPipe data_pipe);
|
|
};
|