Add developer option --test-no-limiter to disable limiter.

Users should not need to use this.
Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

src/audiowmark.cc

@@ -192,6 +192,10 @@ parse_options (int   *argc_p,
         {
           Params::test_no_sync = true;
         }
+      else if (check_arg (argc, argv, &i, "--test-no-limiter"))
+        {
+          Params::test_no_limiter = true;
+        }
       else if (check_arg (argc, argv, &i, "--test-truncate", &opt_arg))
 	{
           Params::test_truncate = atoi (opt_arg);

src/wmadd.cc

@@ -692,7 +692,8 @@ add_watermark (const string& infile, const string& outfile, const string& bits)
       for (size_t i = 0; i < samples.size(); i++)
         samples[i] += orig_samples[i];
 
-      samples = limiter.process (samples);
+      if (!Params::test_no_limiter)
+        samples = limiter.process (samples);
 
       size_t max_write_frames = total_input_frames - total_output_frames;
       if (samples.size() > max_write_frames * n_channels)

src/wmcommon.cc

@@ -10,6 +10,7 @@ bool   Params::snr             = false; // compute/show snr while adding waterma
 int    Params::have_key        = 0;
 int    Params::test_cut        = 0; // for sync test
 bool   Params::test_no_sync    = false; // disable sync
+bool   Params::test_no_limiter = false; // disable limiter
 int    Params::test_truncate   = 0;
 
 Format Params::input_format     = Format::AUTO;

src/wmcommon.hh

@@ -42,6 +42,7 @@ public:
 
   static           int test_cut; // for sync test
   static           bool test_no_sync;
+  static           bool test_no_limiter;
   static           int test_truncate;
 
   static           Format input_format;