зеркало из https://github.com/mozilla/gecko-dev.git
36 строки
1.2 KiB
C++
36 строки
1.2 KiB
C++
/* -*- 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(nsWaveDecoder_h_)
|
|
#define nsWaveDecoder_h_
|
|
|
|
#include "nsBuiltinDecoder.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 (sydneyaudio via nsAudioStream) 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 nsWaveDecoder to support parsing the newer
|
|
* WAVE_FORMAT_EXTENSIBLE chunk format.
|
|
**/
|
|
|
|
|
|
class nsWaveDecoder : public nsBuiltinDecoder
|
|
{
|
|
public:
|
|
virtual nsMediaDecoder* Clone() {
|
|
if (!nsHTMLMediaElement::IsWaveEnabled()) {
|
|
return nullptr;
|
|
}
|
|
return new nsWaveDecoder();
|
|
}
|
|
virtual nsDecoderStateMachine* CreateStateMachine();
|
|
};
|
|
|
|
#endif
|