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/*
* Copyright 2014 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 NUPLAYER_CCDECODER_H_
#define NUPLAYER_CCDECODER_H_
#include "NuPlayer.h"
namespace android {
struct NuPlayer::CCDecoder : public RefBase {
enum {
kWhatClosedCaptionData,
kWhatTrackAdded,
};
CCDecoder(const sp<AMessage> ¬ify);
size_t getTrackCount() const;
sp<AMessage> getTrackInfo(size_t index) const;
status_t selectTrack(size_t index, bool select);
bool isSelected() const;
void decode(const sp<ABuffer> &accessUnit);
void display(int64_t timeUs);
void flush();
private:
sp<AMessage> mNotify;
KeyedVector<int64_t, sp<ABuffer> > mCCMap;
size_t mCurrentChannel;
int32_t mSelectedTrack;
int32_t mTrackIndices[4];
Vector<size_t> mFoundChannels;
bool isTrackValid(size_t index) const;
int32_t getTrackIndex(size_t channel) const;
bool extractFromSEI(const sp<ABuffer> &accessUnit);
bool parseSEINalUnit(int64_t timeUs, const uint8_t *nalStart, size_t nalSize);
sp<ABuffer> filterCCBuf(const sp<ABuffer> &ccBuf, size_t index);
DISALLOW_EVIL_CONSTRUCTORS(CCDecoder);
};
} // namespace android
#endif // NUPLAYER_CCDECODER_H_
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