services/media/audio/platform/generic/mixers/no_op.h

// Copyright 2015 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.

#ifndef SERVICES_MEDIA_AUDIO_PLATFORM_GENERIC_MIXERS_NO_OP_H_
#define SERVICES_MEDIA_AUDIO_PLATFORM_GENERIC_MIXERS_NO_OP_H_

#include "services/media/audio/platform/generic/mixer.h"

namespace mojo {
namespace media {
namespace audio {
namespace mixers {

class NoOp : public Mixer {
 public:
  NoOp() : Mixer(0, 0) {}

  bool Mix(int32_t*     dst,
           uint32_t     dst_frames,
           uint32_t*    dst_offset,
           const void*  src,
           uint32_t     frac_src_frames,
           int32_t*     frac_src_offset,
           uint32_t     frac_step_size,
           Gain::AScale amplitude_scale,
           bool         accumulate) override;
};

}  // namespace mixers
}  // namespace audio
}  // namespace media
}  // namespace mojo

#endif  // SERVICES_MEDIA_AUDIO_PLATFORM_GENERIC_MIXERS_NO_OP_H_