// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.bluetooth.a2dp;

/// Enum corresponding to the A2DP SRC/SNK roles as defined in the
/// A2DP v1.3.2 profile specification, section 2.2.
type Role = strict enum {
    /// Act as a source of digital audio streams, sending audio to peers.
    SOURCE = 1;
    /// Act as a sink of digital audio streams and play audio sent from peers.
    SINK = 2;
};

/// A protocol for specifying which A2DP role this device should operate.
@discoverable
protocol AudioMode {
    /// Switch the device to act as the specified A2DP Role. If the device is already
    /// set to the requested role, calling this method is a no-op.
    ///
    /// When this method returns, a client can depend on the following:
    /// 1. If the role was switched, the previous profile has requested removal
    ///    from the hosts' SDP databases, and all L2CAP channels associated with
    ///    the previous profile have initiated or completed the process of closing.
    /// 2. The device is in the requested A2DP role.
    ///
    /// If the role cannot be set due to an internal error, the server will close
    /// the channel.
    SetRole(struct {
        role Role;
    }) -> ();
};