michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: #if !defined(WaveDecoder_h_)
michael@0: #define WaveDecoder_h_
michael@0: 
michael@0: #include "MediaDecoder.h"
michael@0: 
michael@0: /**
michael@0:  * The decoder implementation is currently limited to Linear PCM encoded
michael@0:  * audio data with one or two channels of 8- or 16-bit samples at sample
michael@0:  * rates from 100 Hz to 96 kHz.  The number of channels is limited by what
michael@0:  * the audio backend (via AudioStream) currently supports.  The supported
michael@0:  * sample rate is artificially limited to arbitrarily selected sane values.
michael@0:  * Support for additional channels (and other new features) would
michael@0:  * require extending WaveDecoder to support parsing the newer
michael@0:  * WAVE_FORMAT_EXTENSIBLE chunk format.
michael@0: **/
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: class WaveDecoder : public MediaDecoder
michael@0: {
michael@0: public:
michael@0:   virtual MediaDecoder* Clone() {
michael@0:     if (!IsWaveEnabled()) {
michael@0:       return nullptr;
michael@0:     }
michael@0:     return new WaveDecoder();
michael@0:   }
michael@0:   virtual MediaDecoderStateMachine* CreateStateMachine();
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif