show applied RaplayGain somewhere

[Almoped]

I could not see applied ReplayGain anywhere in the UI. I guess it could make sense to display in the track mouseover info, the right-click Song Info or the status bar. Using the following it can be shown in the status bar but duplicates replay_gain_mode code. Not sure I made the code tags work.

.../libaudcore/playback.cc
`
EXPORT void aud_drct_get_info(int & bitrate, int & samplerate, int & channels, float & rg)
{
auto mh = mutex.take();
bool ready = is_ready(mh);

bitrate = ready ? pb_info.bitrate : 0;
samplerate = ready ? pb_info.samplerate : 0;
channels = ready ? pb_info.channels : 0;

if (pb_info.gain_valid)
{
    auto mode = (ReplayGainMode)aud_get_int("replay_gain_mode");
    if ((mode == ReplayGainMode::Album) ||
        (mode == ReplayGainMode::Automatic &&
         (!aud_get_bool("shuffle") || aud_get_bool("album_shuffle"))))
    {
        rg = pb_info.gain.album_gain;
    }
    else
    {
        rg = pb_info.gain.track_gain;
    }
}
else
    rg = 0;

}
`

.../qtui/status_bar.cc
`
void StatusBar::update_codec()
{
/* codec info is hidden when a message is displayed */
if (!currentMessage().isEmpty())
return;

if (!aud_drct_get_ready())
{
    codec_label->hide();
    return;
}

Tuple tuple = aud_drct_get_tuple();
String codec = tuple.get_str(Tuple::Codec);

int bitrate, samplerate, channels;
float rg;
aud_drct_get_info(bitrate, samplerate, channels, rg);

StringBuf buf(0);

if (codec)
{
    buf.insert(-1, codec);
    if (channels > 0 || samplerate > 0 || bitrate > 0)
        buf.insert(-1, ", ");
}

if (channels > 0)
{
    if (channels == 1)
        buf.insert(-1, _("mono"));
    else if (channels == 2)
        buf.insert(-1, _("stereo"));
    else
        str_append_printf(
            buf, ngettext("%d channel", "%d channels", channels), channels);

    if (samplerate > 0 || bitrate > 0)
        buf.insert(-1, ", ");
}

if (samplerate > 0)
{
    str_append_printf(buf, _("%d kHz"), samplerate / 1000);
    if (bitrate > 0)
        buf.insert(-1, ", ");
}

if (bitrate > 0)
{
    str_append_printf(buf, _("%d kbit/s"), bitrate / 1000);
    if (rg != 0)
        buf.insert(-1, ", RG: ");
}

if (rg != 0)
    str_append_printf(buf, _("%.2f dB"), rg);

codec_label->setText((const char *)buf);
codec_label->show();

}
`

[Almoped]

Example

[radioactiveman]

Thanks for the suggestion and patches.

I would prefer not to show replay gain info in the status bar. However it fits well into the song info dialog (libaudqt/info-dialog, info-widget). Could you please implement it there and submit a pull request? Thanks.