output/wav: change default for scale factor from 0.0 to 1.0

The WAV output module supports an optional 'scale' factor, in its
absence the samples will pass unmodified. The builtin help text is
unexpected, and reads:

  $ sigrok-cli -O wav --show
  ...
  Options:
    scale: Scale values by factor (default 0.0)

Setup a default scale factor of 1.0, which results in identical
behaviour and better reflects what is happening.

diff --git a/src/output/wav.c b/src/output/wav.c
index 6984c03d29b5185c61c41cc34325772d964249c2..79ea31e25a8f536ae0cb4d6e2b5040d97cf10b6e 100644 (file)
--- a/src/output/wav.c
+++ b/src/output/wav.c
@@ -305,7 +305,7 @@ static int receive(const struct sr_output *o, const struct sr_datafeed_packet *p
                                idx = chan_idx[j];
                                buf = outc->chanbuf[idx] + outc->chanbuf_used[idx]++ * 4;
                                f = data[i * num_channels + j];
-                               if (outc->scale != 0.0)
+                               if (outc->scale != 1.0)
                                        f /= outc->scale;
                                float_to_le(buf, f);
                        }
@@ -338,7 +338,7 @@ static struct sr_option options[] = {
 static const struct sr_option *get_options(void)
 {
        if (!options[0].def)
-               options[0].def = g_variant_ref_sink(g_variant_new_double(0.0));
+               options[0].def = g_variant_ref_sink(g_variant_new_double(1.0));
 
        return options;
 }