jpeg_set_quality  137 example.c        jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */);
jpeg_set_quality  308 jcparam.c        jpeg_set_quality(cinfo, 75, TRUE);
jpeg_set_quality  969 jpeglib.h      EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality,