BufferSource.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 BUFFERSOURCE_H
#define BUFFERSOURCE_H
 
#include <com/avpkit/core/IAudioSamples.h>
#include <com/avpkit/core/IVideoPicture.h>
#include <com/avpkit/core/IRational.h>
#include <com/avpkit/core/IBufferSource.h>
#include <com/avpkit/core/MediaFilter.h>
#include <com/avpkit/ferry/RefPointer.h>
 
 
extern "C" {
#include "libavfilter/avfilter.h"
#include "libavfilter/buffersrc.h"
#include "libavutil/opt.h"
}
 
 
namespace com {
    namespace avpkit {
        namespace core {
            
            using namespace com::avpkit::ferry;
 
            class BufferSource : public IBufferSource, public MediaFilter {
                VS_JNIUTILS_REFCOUNTED_OBJECT_PRIVATE_MAKE(BufferSource)
            public:
                static BufferSource* make(AVFilterGraph* graph, IAudioSamples::Format format,
                    int channels,    
                    int sample_rate,
                    IRational* time_base,
                    IAudioSamples::ChannelLayout channel_layout);
                
                static BufferSource* make(AVFilterGraph* graph, IPixelFormat::Type format,
                    int width,
                    int height,
                    IRational* frame_rate,
                    IRational* time_base);
 
                static BufferSource* make(AVFilterGraph* graph, IVideoPicture* picture, 
                    IRational* frame_rate);                
                
                virtual int addAudioSamples(IAudioSamples* samples);
                
                virtual int addVideoPicture(IVideoPicture* picture);
 
    
            protected:
                BufferSource();
                virtual ~BufferSource();
            private:
                AVFilterGraph* mFilterGraph;
                AVBufferSrcParameters* mParams;
                int mSampleRate;
                com::avpkit::ferry::RefPointer<IRational> mTimeBase;
            };
 
        }
    }
}
 
#endif /* BUFFERSOURCE_H */