correctly report distance when quality is used

fixes #29

tools/cjpegli.cc

@@ -15,6 +15,7 @@
 #include "lib/extras/dec/decode.h"
 #include "lib/extras/enc/jpegli.h"
 #include "lib/extras/time.h"
+#include "lib/jpegli/encode.h"
 #include "tools/args.h"
 #include "tools/cmdline.h"
 #include "tools/file_io.h"
@@ -216,9 +217,13 @@ int CJpegliMain(int argc, const char* argv[]) {
 
  if (!args.quiet) {
  const jxl::extras::JpegSettings& s = args.settings;
+ float calculated_distance =
+ cmdline.GetOption(args.opt_quality_id)->matched()
+ ? jpegli_quality_to_distance(s.quality)
+ : s.distance;
  fprintf(stderr, "Encoding [%s%s d%.3f%s %sAQ p%d %s]\n",
- s.xyb ? "XYB" : "YUV", s.chroma_subsampling.c_str(), s.distance,
- s.use_std_quant_tables ? " StdQuant" : "",
+ s.xyb ? "XYB" : "YUV", s.chroma_subsampling.c_str(),
+ calculated_distance, s.use_std_quant_tables ? " StdQuant" : "",
  s.use_adaptive_quantization ? "" : "no", s.progressive_level,
  s.optimize_coding ? "OPT" : "FIX");
  }