rknpu2/examples/3rdparty/opencv/opencv-linux-aarch64/include/opencv2/imgcodecs/imgcodecs_c.h

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#ifndef OPENCV_IMGCODECS_H
#define OPENCV_IMGCODECS_H

#include "opencv2/core/core_c.h"

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/** @addtogroup imgcodecs_c
  @{
  */

enum
{
/* 8bit, color or not */
    CV_LOAD_IMAGE_UNCHANGED  =-1,
/* 8bit, gray */
    CV_LOAD_IMAGE_GRAYSCALE  =0,
/* ?, color */
    CV_LOAD_IMAGE_COLOR      =1,
/* any depth, ? */
    CV_LOAD_IMAGE_ANYDEPTH   =2,
/* ?, any color */
    CV_LOAD_IMAGE_ANYCOLOR   =4,
/* ?, no rotate */
    CV_LOAD_IMAGE_IGNORE_ORIENTATION  =128
};

/* load image from file
  iscolor can be a combination of above flags where CV_LOAD_IMAGE_UNCHANGED
  overrides the other flags
  using CV_LOAD_IMAGE_ANYCOLOR alone is equivalent to CV_LOAD_IMAGE_UNCHANGED
  unless CV_LOAD_IMAGE_ANYDEPTH is specified images are converted to 8bit
*/
CVAPI(IplImage*) cvLoadImage( const char* filename, int iscolor CV_DEFAULT(CV_LOAD_IMAGE_COLOR));
CVAPI(CvMat*) cvLoadImageM( const char* filename, int iscolor CV_DEFAULT(CV_LOAD_IMAGE_COLOR));

enum
{
    CV_IMWRITE_JPEG_QUALITY =1,
    CV_IMWRITE_JPEG_PROGRESSIVE =2,
    CV_IMWRITE_JPEG_OPTIMIZE =3,
    CV_IMWRITE_JPEG_RST_INTERVAL =4,
    CV_IMWRITE_JPEG_LUMA_QUALITY =5,
    CV_IMWRITE_JPEG_CHROMA_QUALITY =6,
    CV_IMWRITE_PNG_COMPRESSION =16,
    CV_IMWRITE_PNG_STRATEGY =17,
    CV_IMWRITE_PNG_BILEVEL =18,
    CV_IMWRITE_PNG_STRATEGY_DEFAULT =0,
    CV_IMWRITE_PNG_STRATEGY_FILTERED =1,
    CV_IMWRITE_PNG_STRATEGY_HUFFMAN_ONLY =2,
    CV_IMWRITE_PNG_STRATEGY_RLE =3,
    CV_IMWRITE_PNG_STRATEGY_FIXED =4,
    CV_IMWRITE_PXM_BINARY =32,
    CV_IMWRITE_EXR_TYPE = 48,
    CV_IMWRITE_WEBP_QUALITY =64,
    CV_IMWRITE_PAM_TUPLETYPE = 128,
    CV_IMWRITE_PAM_FORMAT_NULL = 0,
    CV_IMWRITE_PAM_FORMAT_BLACKANDWHITE = 1,
    CV_IMWRITE_PAM_FORMAT_GRAYSCALE = 2,
    CV_IMWRITE_PAM_FORMAT_GRAYSCALE_ALPHA = 3,
    CV_IMWRITE_PAM_FORMAT_RGB = 4,
    CV_IMWRITE_PAM_FORMAT_RGB_ALPHA = 5,
};



/* save image to file */
CVAPI(int) cvSaveImage( const char* filename, const CvArr* image,
                        const int* params CV_DEFAULT(0) );

/* decode image stored in the buffer */
CVAPI(IplImage*) cvDecodeImage( const CvMat* buf, int iscolor CV_DEFAULT(CV_LOAD_IMAGE_COLOR));
CVAPI(CvMat*) cvDecodeImageM( const CvMat* buf, int iscolor CV_DEFAULT(CV_LOAD_IMAGE_COLOR));

/* encode image and store the result as a byte vector (single-row 8uC1 matrix) */
CVAPI(CvMat*) cvEncodeImage( const char* ext, const CvArr* image,
                             const int* params CV_DEFAULT(0) );

enum
{
    CV_CVTIMG_FLIP      =1,
    CV_CVTIMG_SWAP_RB   =2
};

/* utility function: convert one image to another with optional vertical flip */
CVAPI(void) cvConvertImage( const CvArr* src, CvArr* dst, int flags CV_DEFAULT(0));

CVAPI(int) cvHaveImageReader(const char* filename);
CVAPI(int) cvHaveImageWriter(const char* filename);


/****************************************************************************************\
*                              Obsolete functions/synonyms                               *
\****************************************************************************************/

#define cvvLoadImage(name) cvLoadImage((name),1)
#define cvvSaveImage cvSaveImage
#define cvvConvertImage cvConvertImage

/** @} imgcodecs_c */

#ifdef __cplusplus
}
#endif

#endif // OPENCV_IMGCODECS_H