gecko-dev/dom/media/ADTSDecoder.cpp

57 строки
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "ADTSDecoder.h"
#include "ADTSDemuxer.h"
#include "MediaContainerType.h"
#include "MediaDecoderStateMachine.h"
#include "MediaFormatReader.h"
#include "PDMFactory.h"
namespace mozilla {
MediaDecoder*
ADTSDecoder::Clone(MediaDecoderOwner* aOwner)
{
if (!IsEnabled())
return nullptr;
return new ADTSDecoder(aOwner);
}
MediaDecoderStateMachine*
ADTSDecoder::CreateStateMachine()
{
RefPtr<MediaDecoderReader> reader =
new MediaFormatReader(this, new ADTSDemuxer(GetResource()));
return new MediaDecoderStateMachine(this, reader);
}
/* static */ bool
ADTSDecoder::IsEnabled()
{
RefPtr<PDMFactory> platform = new PDMFactory();
return platform->SupportsMimeType(NS_LITERAL_CSTRING("audio/mp4a-latm"),
/* DecoderDoctorDiagnostics* */ nullptr);
}
/* static */ bool
ADTSDecoder::IsSupportedType(const MediaContainerType& aContainerType)
{
if (aContainerType.Type() == MEDIAMIMETYPE("audio/aac")
|| aContainerType.Type() == MEDIAMIMETYPE("audio/aacp")
|| aContainerType.Type() == MEDIAMIMETYPE("audio/x-aac")) {
return
IsEnabled()
&& (aContainerType.ExtendedType().Codecs().IsEmpty()
|| aContainerType.ExtendedType().Codecs() == "aac");
}
return false;
}
} // namespace mozilla