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sndfile: send a toc for the segments in the audio file

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This commit is contained in:
Stefan Sauer 2014-01-06 22:13:21 +01:00
parent 36a2acae45
commit 6bb08d1267
1 changed files with 75 additions and 1 deletions
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76
ext/sndfile/gstsfdec.c
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@ -599,6 +599,77 @@ create_and_send_tags (GstSFDec * self, SF_INFO * info, SF_LOOP_INFO * loop_info,
}
}
static gboolean
is_valid_loop (gint mode, guint start, guint end)
{
if (!end)
return FALSE;
if (start >= end)
return FALSE;
if (!mode)
return FALSE;
return TRUE;
}
static void
create_and_send_toc (GstSFDec * self, SF_INFO * info, SF_LOOP_INFO * loop_info,
SF_INSTRUMENT * instrument)
{
GstToc *toc;
GstTocEntry *entry = NULL, *subentry = NULL;
gint64 start, stop;
gchar *id;
gint i;
gboolean have_loops = FALSE;
if (!instrument)
return;
for (i = 0; i < 16; i++) {
if (is_valid_loop (instrument->loops[i].mode, instrument->loops[i].start,
instrument->loops[i].end)) {
have_loops = TRUE;
break;
}
}
if (!have_loops) {
GST_INFO_OBJECT (self, "Have no loops");
return;
}
toc = gst_toc_new (GST_TOC_SCOPE_GLOBAL);
GST_DEBUG_OBJECT (self, "have toc");
/* add cue edition */
entry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_EDITION, "loops");
stop = gst_util_uint64_scale_int (self->duration, GST_SECOND, self->rate);
gst_toc_entry_set_start_stop_times (entry, 0, stop);
gst_toc_append_entry (toc, entry);
for (i = 0; i < 16; i++) {
GST_DEBUG_OBJECT (self,
"loop[%2d]: mode=%d, start=%u, end=%u, count=%u", i,
instrument->loops[i].mode, instrument->loops[i].start,
instrument->loops[i].end, instrument->loops[i].count);
if (is_valid_loop (instrument->loops[i].mode, instrument->loops[i].start,
instrument->loops[i].end)) {
id = g_strdup_printf ("%08x", i);
subentry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_CHAPTER, id);
g_free (id);
start = gst_util_uint64_scale_int (instrument->loops[i].start,
GST_SECOND, self->rate);
stop = gst_util_uint64_scale_int (instrument->loops[i].end,
GST_SECOND, self->rate);
gst_toc_entry_set_start_stop_times (subentry, start, stop);
gst_toc_entry_append_sub_entry (entry, subentry);
}
}
gst_pad_push_event (self->srcpad, gst_event_new_toc (toc, FALSE));
}
static gboolean
gst_sf_dec_open_file (GstSFDec * self)
{
@ -687,6 +758,9 @@ gst_sf_dec_open_file (GstSFDec * self)
create_and_send_tags (self, &info, (have_loop_info ? &loop_info : NULL),
(have_instrument ? &instrument : NULL));
create_and_send_toc (self, &info, (have_loop_info ? &loop_info : NULL),
(have_instrument ? &instrument : NULL));
return TRUE;
open_failed:
@ -717,7 +791,7 @@ gst_sf_dec_loop (GstPad * pad)
buf = gst_buffer_new_and_alloc (self->bytes_per_frame * num_frames);
gst_buffer_map (buf, &map, GST_MAP_WRITE);
frames_read = self->reader (self->file, map.data, num_frames);
GST_DEBUG_OBJECT (self, "read %d / %d bytes = %d frames of audio",
GST_LOG_OBJECT (self, "read %d / %d bytes = %d frames of audio",
(gint) frames_read, (gint) map.size, num_frames);
gst_buffer_unmap (buf, &map);