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sndfile: emit midi-base-note tag

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Query instrument data. Use both 'loop_info' and 'instrument' to inform about the
basenote.
This commit is contained in:
Stefan Sauer 2013-12-30 15:49:57 +01:00
parent 46cb19404d
commit 3149dbb44b
1 changed files with 23 additions and 4 deletions
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23
ext/sndfile/gstsfdec.c
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@ -480,6 +480,7 @@ gst_sf_dec_open_file (GstSFDec * self)
{
SF_INFO info = { 0, };
SF_LOOP_INFO loop_info = { 0, };
SF_INSTRUMENT instrument = { 0, };
GstCaps *caps;
GstStructure *s;
GstSegment seg;
@ -489,6 +490,8 @@ gst_sf_dec_open_file (GstSFDec * self)
const gchar *tag;
const gchar *codec_name;
gchar *stream_id;
gboolean have_loop_info = FALSE;
gboolean have_instrument = FALSE;
GST_DEBUG_OBJECT (self, "opening the stream");
if (!(self->file = sf_open_virtual (&gst_sf_vio, SFM_READ, &info, self)))
@ -552,6 +555,12 @@ gst_sf_dec_open_file (GstSFDec * self)
if (sf_command (self->file, SFC_GET_LOOP_INFO, &loop_info,
sizeof (loop_info))) {
GST_DEBUG_OBJECT (self, "have loop info");
have_loop_info = TRUE;
}
if (sf_command (self->file, SFC_GET_INSTRUMENT, &instrument,
sizeof (instrument))) {
GST_DEBUG_OBJECT (self, "have instrument");
have_instrument = TRUE;
}
/* send tags */
@ -583,13 +592,23 @@ gst_sf_dec_open_file (GstSFDec * self)
}
if ((tag = sf_get_string (self->file, SF_STR_TRACKNUMBER))) {
guint track = atoi (tag);
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_TRACK_NUMBER, track,
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_TRACK_NUMBER, track,
NULL);
}
if (have_loop_info) {
if (loop_info.bpm != 0.0) {
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_BEATS_PER_MINUTE,
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_BEATS_PER_MINUTE,
(gdouble) loop_info.bpm, NULL);
}
if (loop_info.root_key != -1) {
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_MIDI_BASE_NOTE,
(guint) loop_info.root_key, NULL);
}
}
if (have_instrument) {
gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_MIDI_BASE_NOTE,
(guint) instrument.basenote, NULL);
}
/* TODO: SF_STR_DATE: GST_TAG_DATE / GST_TAG_DATE_TIME */
/* TODO: calculate bitrate: GST_TAG_BITRATE */
switch (info.format & SF_FORMAT_SUBMASK) {