gecko-dev/dom/media/omx/AudioOffloadPlayerBase.h

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2.2 KiB
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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: */
/*
* Copyright (c) 2014 The Linux Foundation. All rights reserved.
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef AUDIO_OFFLOAD_PLAYER_BASE_H_
#define AUDIO_OFFLOAD_PLAYER_BASE_H_
#include "MediaDecoder.h"
#include "MediaDecoderOwner.h"
namespace mozilla {
/**
* AudioOffloadPlayer interface class which has funtions used by MediaOmxDecoder
* This is to reduce the dependency of AudioOffloadPlayer in MediaOmxDecoder
*/
class AudioOffloadPlayerBase
{
typedef android::status_t status_t;
typedef android::MediaSource MediaSource;
public:
virtual ~AudioOffloadPlayerBase() {};
// Caller retains ownership of "aSource".
virtual void SetSource(const android::sp<MediaSource> &aSource) {}
// Start the source if it's not already started and open the AudioSink to
// create an offloaded audio track
virtual status_t Start(bool aSourceAlreadyStarted = false)
{
return android::NO_INIT;
}
virtual status_t ChangeState(MediaDecoder::PlayState aState)
{
return android::NO_INIT;
}
virtual void SetVolume(double aVolume) {}
virtual double GetMediaTimeSecs() { return 0; }
// To update progress bar when the element is visible
virtual void SetElementVisibility(bool aIsVisible) {}
// Update ready state based on current play state. Not checking data
// availability since offloading is currently done only when whole compressed
// data is available
virtual MediaDecoderOwner::NextFrameStatus GetNextFrameStatus()
{
return MediaDecoderOwner::NEXT_FRAME_UNAVAILABLE;
}
};
} // namespace mozilla
#endif // AUDIO_OFFLOAD_PLAYER_BASE_H_