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audiocdsrc: Don't consider trailing data tracks for MusicBrainz disc id calculation

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MusicBrainz removes trailing data tracks from releases on the server
and also for the calculation of the MusicBrainz Disc ID.

https://bugzilla.gnome.org/show_bug.cgi?id=708991
This commit is contained in:
Johannes Dewender 2013-09-28 13:19:02 +02:00 committed by Sebastian Dröge
parent 09d628f8f1
commit 019ef0747d
1 changed files with 14 additions and 6 deletions
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20
gst-libs/gst/audio/gstaudiocdsrc.c
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@ -1189,13 +1189,23 @@ gst_audio_cd_src_calculate_musicbrainz_discid (GstAudioCdSrc * src)
gchar *ptr;
gchar tmp[9];
gulong i;
unsigned int last_audio_track;
guint leadout_sector;
gsize digest_len;
s = g_string_new (NULL);
/* MusicBrainz doesn't consider trailing data tracks
* data tracks up front stay, since the disc has to start with 1 */
last_audio_track = 0;
for (i = 0; i < src->priv->num_tracks; i++) {
if (src->priv->tracks[i].is_audio) {
last_audio_track = src->priv->tracks[i].num;
}
}
leadout_sector =
src->priv->tracks[src->priv->num_tracks - 1].end + 1 + CD_MSF_OFFSET;
src->priv->tracks[last_audio_track - 1].end + 1 + CD_MSF_OFFSET;
/* generate SHA digest */
sha = g_checksum_new (G_CHECKSUM_SHA1);
@ -1203,10 +1213,8 @@ gst_audio_cd_src_calculate_musicbrainz_discid (GstAudioCdSrc * src)
g_string_append_printf (s, "%02X", src->priv->tracks[0].num);
g_checksum_update (sha, (guchar *) tmp, 2);
g_snprintf (tmp, sizeof (tmp), "%02X",
src->priv->tracks[src->priv->num_tracks - 1].num);
g_string_append_printf (s, " %02X",
src->priv->tracks[src->priv->num_tracks - 1].num);
g_snprintf (tmp, sizeof (tmp), "%02X", last_audio_track);
g_string_append_printf (s, " %02X", last_audio_track);
g_checksum_update (sha, (guchar *) tmp, 2);
g_snprintf (tmp, sizeof (tmp), "%08X", leadout_sector);
@ -1214,7 +1222,7 @@ gst_audio_cd_src_calculate_musicbrainz_discid (GstAudioCdSrc * src)
g_checksum_update (sha, (guchar *) tmp, 8);
for (i = 0; i < 99; i++) {
if (i < src->priv->num_tracks) {
if (i < last_audio_track) {
guint frame_offset = src->priv->tracks[i].start + CD_MSF_OFFSET;
g_snprintf (tmp, sizeof (tmp), "%08X", frame_offset);