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 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* vim:set ts=2 sw=2 sts=2 et cindent: */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #if !defined(WaveDecoder_h_)

 #define WaveDecoder_h_

 #include "MediaDecoder.h"

 /**

  * The decoder implementation is currently limited to Linear PCM encoded

  * audio data with one or two channels of 8- or 16-bit samples at sample

  * rates from 100 Hz to 96 kHz.  The number of channels is limited by what

  * the audio backend (via AudioStream) currently supports.  The supported

  * sample rate is artificially limited to arbitrarily selected sane values.

  * Support for additional channels (and other new features) would

  * require extending WaveDecoder to support parsing the newer

  * WAVE_FORMAT_EXTENSIBLE chunk format.

 **/

 namespace mozilla {

 class WaveDecoder : public MediaDecoder

 {

 public:

   virtual MediaDecoder* Clone() {

     if (!IsWaveEnabled()) {

       return nullptr;

     }

     return new WaveDecoder();

   }

   virtual MediaDecoderStateMachine* CreateStateMachine();

 };

 } // namespace mozilla

 #endif