diff options
| author | Colin Fletcher <colin.m.fletcher@googlemail.com> | 2016-04-01 15:18:53 +0100 |
|---|---|---|
| committer | Colin Fletcher <colin.m.fletcher@googlemail.com> | 2016-04-01 15:18:53 +0100 |
| commit | 91c7845d409665e54d78c9325c36aa8926b82669 (patch) | |
| tree | e18a4765afeb5e2e8cc1c22046e2e22b06b2c9df /gtk2_ardour/session_metadata_dialog.cc | |
| parent | 9a8a5f4f20d6e6f8495e264880f123ca4b9a1a1b (diff) | |
Fix EAN check digit calculation
Fix two mistakes in in the EAN check digit calculation.
Diffstat (limited to 'gtk2_ardour/session_metadata_dialog.cc')
| -rw-r--r-- | gtk2_ardour/session_metadata_dialog.cc | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/gtk2_ardour/session_metadata_dialog.cc b/gtk2_ardour/session_metadata_dialog.cc index 7973d035bb..88720edc74 100644 --- a/gtk2_ardour/session_metadata_dialog.cc +++ b/gtk2_ardour/session_metadata_dialog.cc @@ -270,15 +270,18 @@ EAN13MetadataField::update_status () // calculate EAN-13 modulo 10 check digit int sum = 0; const char *p = _value.c_str(); - for (int i =0; i < 12; i++) { + for (int i = 0; i < 12; i++) { char c = p[i] - '0'; if (i % 2) { - sum += c; - } else { sum += c * 3; + } else { + sum += c; } } sum %= 10; + if (sum) + sum = 10 - sum; + if (sum == p[12] - '0') { status_label->set_markup (string_compose( "<span color=\"green\">%1: %2</span>", |