BufferSink.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 BUFFERSINK_H
#define BUFFERSINK_H
 
#include <com/avpkit/core/IAudioSamples.h>
#include <com/avpkit/core/IVideoPicture.h>
#include <com/avpkit/core/IRational.h>
#include <com/avpkit/core/IBufferSink.h>
#include <com/avpkit/core/MediaFilter.h>
#include <com/avpkit/core/MediaFilter.h>
#include <com/avpkit/ferry/RefPointer.h>
 
extern "C" {
#include "libavfilter/avfilter.h"
#include "libavfilter/buffersink.h"
#include "libavutil/opt.h"
}
 
namespace com {
    namespace avpkit {
        namespace core {
            
            class BufferSink : public IBufferSink, public MediaFilter {
                VS_JNIUTILS_REFCOUNTED_OBJECT(BufferSink)
            public:
                static BufferSink* make(AVFilterGraph*, IAudioSamples::ChannelLayout channel_layout);
                static BufferSink* make(AVFilterGraph*, IPixelFormat::Type pixel_type);
                virtual int getSampleRate();
                virtual int getChannels();
                virtual int getWidth();
                virtual int getHeight();
                virtual IRational* getFrameRate();
                virtual IRational* getTimeBase();
                virtual void setNumSamples(int frameSize);
                virtual int fillAudioSamples(IAudioSamples* samples); 
                virtual int fillVideoPicture(IVideoPicture* picture);
                virtual void setReady();
 
            protected:
                BufferSink();
                virtual ~BufferSink();
            private:
                AVFilterGraph* mFilterGraph;
                int mSampleRate;
                const AVFilter* mSinkFilter;
                AVFilterContext* mSinkFilterContext;
                com::avpkit::ferry::RefPointer<IRational> mTimeBase;
            };
 
        }
    }
}
 
#endif /* BUFFERSINK_H */