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demux: refactor replaygain tag handling

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For the following commit. Also print the replaygain values in verbose
mode.
This commit is contained in:
wm4 2015-07-12 19:31:06 +02:00
parent ba525e68c4
commit f052165dbf
1 changed files with 19 additions and 17 deletions
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36
demux/demux.c
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@ -789,27 +789,29 @@ static int decode_peak(demuxer_t *demuxer, const char *tag, float *out)
return 0;
}
static void apply_replaygain(demuxer_t *demuxer, struct replaygain_data *rg)
{
for (int n = 0; n < demuxer->num_streams; n++) {
struct sh_stream *sh = demuxer->streams[n];
if (sh->audio && !sh->audio->replaygain_data) {
MP_VERBOSE(demuxer, "Replaygain: Track=%f/%f Album=%f/%f\n",
rg->track_gain, rg->track_peak,
rg->album_gain, rg->album_peak);
sh->audio->replaygain_data = talloc_memdup(demuxer, rg, sizeof(*rg));
}
}
}
static void demux_export_replaygain(demuxer_t *demuxer)
{
float tg, tp, ag, ap;
struct replaygain_data rg = {0};
if (!decode_gain(demuxer, "REPLAYGAIN_TRACK_GAIN", &tg) &&
!decode_peak(demuxer, "REPLAYGAIN_TRACK_PEAK", &tp) &&
!decode_gain(demuxer, "REPLAYGAIN_ALBUM_GAIN", &ag) &&
!decode_peak(demuxer, "REPLAYGAIN_ALBUM_PEAK", &ap))
if (!decode_gain(demuxer, "REPLAYGAIN_TRACK_GAIN", &rg.track_gain) &&
!decode_peak(demuxer, "REPLAYGAIN_TRACK_PEAK", &rg.track_peak) &&
!decode_gain(demuxer, "REPLAYGAIN_ALBUM_GAIN", &rg.album_gain) &&
!decode_peak(demuxer, "REPLAYGAIN_ALBUM_PEAK", &rg.album_peak))
{
struct replaygain_data *rgain = talloc_ptrtype(demuxer, rgain);
rgain->track_gain = tg;
rgain->track_peak = tp;
rgain->album_gain = ag;
rgain->album_peak = ap;
for (int n = 0; n < demuxer->num_streams; n++) {
struct sh_stream *sh = demuxer->streams[n];
if (sh->audio && !sh->audio->replaygain_data)
sh->audio->replaygain_data = rgain;
}
apply_replaygain(demuxer, &rg);
}
}