Stream.h

/*******************************************************************************
 * Copyright (c) 2024, 2026, Olivier Ayache.  All rights reserved.
 *
 * This file is part of AVPKit.
 *
 * AVPKit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * AVPKit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with AVPKit.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
 
#ifndef STREAM_H_
#define STREAM_H_
 
#include <com/avpkit/ferry/RefPointer.h>
#include <com/avpkit/core/IStream.h>
#include <com/avpkit/core/FfmpegIncludes.h>
#include <com/avpkit/core/IRational.h>
#include <com/avpkit/core/IMetaData.h>
 
namespace com { namespace avpkit { namespace core
{
 
  class StreamCoder;
  class Container;
  class IPacket;
 
  class Stream : public IStream
  {
    VS_JNIUTILS_REFCOUNTED_OBJECT_PRIVATE_MAKE(Stream)
  public:
 
    // IStream
    virtual Direction getDirection() { return mDirection; }
    virtual int getIndex();
    virtual int getId();
    virtual IStreamCoder * getStreamCoder();
    virtual IRational * getFrameRate();
    virtual IRational * getTimeBase();
    virtual int64_t getStartTime();
    virtual int64_t getDuration();
    virtual int64_t getCurrentDts();
    virtual int getNumIndexEntries();
    virtual int64_t getNumFrames();
 
    // Not for calling from Java
    static Stream * make(Container* container, AVStream *, Direction direction, const AVCodec*);
 
    // The StreamCoder will call this if it needs to
    virtual void setTimeBase(IRational *);
    virtual void setFrameRate(IRational *);
 
    // Called by the managing container when it is closed
    // at this point this stream is no longer valid.
    virtual int containerClosed(Container* container);
 
    virtual int32_t acquire();
    virtual int32_t release();
 
    virtual IRational* getSampleAspectRatio();
    virtual void setSampleAspectRatio(IRational* newRatio);
    virtual const char* getLanguage();
    virtual void setLanguage(const char* language);
 
    virtual IContainer* getContainer();
    virtual IStream::ParseType getParseType();
    virtual void setParseType(ParseType type);
    
    virtual int setBitstreamFilter(const char* name);
 
    virtual int32_t setStreamCoder(IStreamCoder *coder);
    
    virtual AVStream* getAVStream() { return mStream; }
    
    virtual AVBSFContext* getAVBsfContext() { return mBsfContext; }
    
    virtual IMetaData* getMetaData();
    virtual void setMetaData(IMetaData* metaData);
 
    virtual int32_t stampOutputPacket(IPacket* packet);
    virtual int32_t setStreamCoder(IStreamCoder *newCoder, bool assumeOnlyStream);
    virtual IIndexEntry* findTimeStampEntryInIndex(
        int64_t wantedTimeStamp, int32_t flags);
    virtual int32_t findTimeStampPositionInIndex(
        int64_t wantedTimeStamp, int32_t flags);
    virtual IIndexEntry* getIndexEntry(int32_t position);
    virtual int32_t addIndexEntry(IIndexEntry* entry);
    void setId(int32_t id);
 
  protected:
    Stream();
    virtual ~Stream();
 
  private:
    void reset();
    AVBSFContext *mBsfContext;
    AVStream *mStream;
    Direction mDirection;
    StreamCoder* mCoder;
    Container* mContainer;
    com::avpkit::ferry::RefPointer<IMetaData> mMetaData;
    
    int64_t mLastDts;
  };
 
}}}
 
#endif /*STREAM_H_*/