IVideoResampler.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 IVIDEORESAMPLER_H_
#define IVIDEORESAMPLER_H_
 
#include <com/avpkit/ferry/RefCounted.h>
#include <com/avpkit/core/AVPKit.h>
#include <com/avpkit/core/IPixelFormat.h>
#include <com/avpkit/core/IVideoPicture.h>
#include <com/avpkit/core/IProperty.h>
 
namespace com { namespace avpkit { namespace core
  {
 
  class VS_API_AVPKIT IVideoResampler : public com::avpkit::ferry::RefCounted
  {
  public:
 
    typedef enum {
      FEATURE_IMAGERESCALING,
      FEATURE_COLORSPACECONVERSION,
    } Feature;
 
    virtual int32_t getInputWidth()=0;
 
    virtual int32_t getInputHeight()=0;
 
    virtual IPixelFormat::Type getInputPixelFormat()=0;
 
    virtual int32_t getOutputWidth()=0;
 
    virtual int32_t getOutputHeight()=0;
 
    virtual IPixelFormat::Type getOutputPixelFormat()=0;
 
    virtual int32_t resample(IVideoPicture *outVideoPicture, IVideoPicture *inVideoPicture)=0;
 
    /*
     * Added for 1.19
     */
 
    virtual int32_t getNumProperties()=0;
    
    virtual IProperty *getPropertyMetaData(int32_t propertyNo)=0;
 
    virtual IProperty *getPropertyMetaData(const char *name)=0;
    
    virtual int32_t setProperty(const char *name, const char* value)=0;
 
 
    virtual int32_t setProperty(const char* name, double value)=0;
    
    virtual int32_t setProperty(const char* name, int64_t value)=0;
    
    virtual int32_t setProperty(const char* name, bool value)=0;
    
    virtual int32_t setProperty(const char* name, IRational *value)=0;
 
#ifdef SWIG
    %newobject getPropertyAsString(const char*);
    %typemap(newfree) char * "free($1);";
#endif
    virtual char * getPropertyAsString(const char* name)=0;
 
    virtual double getPropertyAsDouble(const char* name)=0;
 
    virtual int64_t getPropertyAsLong(const char* name)=0;
 
    virtual  IRational *getPropertyAsRational(const char* name)=0;
 
    virtual bool getPropertyAsBoolean(const char* name)=0;
 
    static IVideoResampler* make(
        int32_t outputWidth, int32_t outputHeight,
        IPixelFormat::Type outputFmt,
        int32_t inputWidth, int32_t inputHeight,
        IPixelFormat::Type inputFmt);
 
    static bool isSupported(Feature feature);
 
    virtual int32_t setProperty(IMetaData* valuesToSet, IMetaData* valuesNotFound)=0;
  protected:
    IVideoResampler();
    virtual ~IVideoResampler();
  };
 
  }}}
 
#endif /*IVIDEORESAMPLER_H_*/