govips/bridge.h at master · oikyn/govips · GitHub

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#include <stdlib.h>
#include <vips/vips.h>
#include <vips/foreign.h>

#if (VIPS_MAJOR_VERSION < 8)
  error_requires_version_8
#endif

#define INT_TO_GBOOLEAN(bool) (bool > 0 ? TRUE : FALSE)

enum types {
	UNKNOWN = 0,
	JPEG,
	WEBP,
	PNG,
	TIFF,
	GIF,
	PDF,
	SVG,
	MAGICK
};

int init_image(void *buf, size_t len, int imageType, VipsImage **out);
int find_image_type_loader(int t);
int find_image_type_saver(int t);

int save_jpeg_buffer(VipsImage* image, void **buf, size_t *len, int strip, int quality, int interlace);
int save_png_buffer(VipsImage *in, void **buf, size_t *len, int strip, int compression, int quality, int interlace);
int save_webp_buffer(VipsImage *in, void **buf, size_t *len, int strip, int quality, int lossless);
int save_tiff_buffer(VipsImage *in, void **buf, size_t *len);
int load_jpeg_buffer(void *buf, size_t len, VipsImage **out, int shrink);

int to_colorspace(VipsImage *in, VipsImage **out, VipsInterpretation space);
int is_colorspace_supported(VipsImage *in);
int remove_icc_profile(VipsImage *in);

// Operations
int resize_image(VipsImage *in, VipsImage **out, double scale, double vscale, int kernel);
int flip_image(VipsImage *in, VipsImage **out, int direction);
int shrink_image(VipsImage *in, VipsImage **out, double xshrink, double yshrink);
int reduce_image(VipsImage *in, VipsImage **out, double xshrink, double yshrink);
int zoom_image(VipsImage *in, VipsImage **out, int xfac, int yfac);
int embed_image(VipsImage *in, VipsImage **out, int left, int top, int width, int height, int extend, double r, double g, double b);
int extract_image_area(VipsImage *in, VipsImage **out, int left, int top, int width, int height);
int flatten_image_background(VipsImage *in, VipsImage **out, double r, double g, double b);
int transform_image(VipsImage *in, VipsImage **out, double a, double b, double c, double d, VipsInterpolate *interpolator);
int gaussian_blur(VipsImage *in, VipsImage **out, double sigma);
int invert_image(VipsImage *in, VipsImage **out);

void gobject_set_property(VipsObject* object, const char* name, const GValue* value);

static int has_alpha_channel(VipsImage *image) {
	return (
		(image->Bands == 2 && image->Type == VIPS_INTERPRETATION_B_W) ||
		(image->Bands == 4 && image->Type != VIPS_INTERPRETATION_CMYK) ||
		(image->Bands == 5 && image->Type == VIPS_INTERPRETATION_CMYK)
	) ? 1 : 0;
}