static VALUE
png_buf_internal(VALUE obj, VALUE compression, VALUE interlace)
{
#if IM_MAJOR_VERSION > 7 || IM_MINOR_VERSION >= 23
VipsImage *im_out;
char *buf;
int length;
GetImg(obj, data, im);
if (!(im_out = im_open("writer_png_buf", "p")))
vips_lib_error();
if (im_vips2bufpng(im, im_out, NUM2INT(compression), NUM2INT(interlace),
&buf, &length)) {
im_close(im_out);
vips_lib_error();
}
im_close(im_out);
return rb_tainted_str_new(buf, length);
#else
rb_raise(eVIPSError, "This method is not implemented in your version of VIPS");
#endif
}
static VALUE
png_buf_internal(VALUE obj, VALUE compression, VALUE interlace)
{
#if IM_MAJOR_VERSION > 7 || IM_MINOR_VERSION >= 23
char *buf;
size_t length;
GetImg(obj, data, im);
if (im_vips2bufpng(im, NULL, NUM2INT(compression), NUM2INT(interlace),
&buf, &length))
vips_lib_error();
return rb_tainted_str_new(buf, length);
#else
rb_raise(eVIPSError, "This method is not implemented in your version of VIPS");
#endif
}
static VALUE
png_buf_internal(VALUE obj, VALUE compression, VALUE interlace)
{
char *buf;
size_t length;
GetImg(obj, data, im);
#if ATLEAST_VIPS( 7, 28 )
if (vips_pngsave_buffer(im, &buf, &length,
"compression", NUM2INT(compression),
"interlace", NUM2INT(interlace),
NULL))
vips_lib_error();
#elif ATLEAST_VIPS( 7, 23 )
if (im_vips2bufpng(im, NULL, NUM2INT(compression), NUM2INT(interlace),
&buf, &length))
vips_lib_error();
#else
rb_raise(eVIPSError, "This method is not implemented in your version of VIPS");
#endif
return rb_tainted_str_new(buf, length);
}