#define im_push_errorf (im_extt->f_im_push_errorf)
+#define i_img_alpha_channel(im, channel) ((im_extt->f_i_img_alpha_channel)((im), (channel)))
+#define i_img_color_model(im) ((im_extt->f_i_img_color_model)((im)))
+#define i_img_color_channels(im) ((im_extt->f_i_img_color_channels)((im)))
+
+#define im_decode_exif(im, data, len) ((im_extt->f_im_decode_exif)((im), (data), (len)))
+
#ifdef IMAGER_LOG
#ifndef IMAGER_NO_CONTEXT
#define mm_log(x) { i_lhead(__FILE__,__LINE__); i_loog x; }