blob: 83a70a444d05beeccd72f07891e6fb3bd28bb791 [file] [log] [blame]
// Copyright 2019 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.
#include "chromecast/public/chromecast_export.h"
namespace chromecast {
namespace media {
// Interface for external control of mixer. The Get() method is only implemented
// when the mixer is actually present.
class CHROMECAST_EXPORT MixerControl {
// If implemented, returns the control for the current mixer instance. The
// returned pointer is valid until process shutdown.
static MixerControl* Get() __attribute__((__weak__));
// Sets the desired number of output channels used by the mixer. This will
// cause an audio interruption on any currently active streams. The actual
// output channel count is determined by the output implementation and may not
// match |num_channels|.
virtual void SetNumOutputChannels(int num_channels) = 0;
virtual ~MixerControl() = default;
} // namespace media
} // namespace chromecast