static void
ol_osd_module_update_next_lyric (OlOsdModule *osd, OlLrcIter *iter)
{
if (osd->line_count == 1)
{
osd->lrc_next_id = -1;
return;
}
if (ol_lrc_iter_next (iter))
_advance_to_nonempty_lyric (iter);
gint id;
const char *text = NULL;
if (ol_lrc_iter_is_valid (iter))
{
id = ol_lrc_iter_get_id (iter);
text = ol_lrc_iter_get_text (iter);
}
else
{
id = -1;
text = "";
}
if (osd->lrc_next_id != id)
{
int next_line = 1 - osd->current_line;
osd->lrc_next_id = id;
ol_osd_window_set_lyric (osd->window, next_line, text);
ol_osd_window_set_percentage (osd->window, next_line, 0.0);
}
}
static void _seek_cb (OlScrollWindow *scroll,
guint id,
gdouble percentage,
gpointer userdata)
{
OlScrollModule *module = userdata;
if (module->lrc)
{
OlLrcIter *iter = ol_lrc_iter_from_id (module->lrc, id);
if (!ol_lrc_iter_is_valid (iter))
{
ol_errorf ("Seek to an invalid ID: %u\n", id);
ol_lrc_iter_free (iter);
return;
}
gint64 iter_time = ol_lrc_iter_get_timestamp (iter);
guint64 duration = ol_lrc_iter_get_duration (iter);
ol_lrc_iter_free (iter);
gint64 new_time = iter_time + duration * percentage;
ol_player_seek (module->player, new_time);
ol_scroll_window_set_progress (module->scroll,
id,
percentage);
/* avoid players send played time before seeked. */
g_usleep (200000);
}
}
static gboolean
_advance_to_nonempty_lyric (OlLrcIter *iter)
{
for (; ol_lrc_iter_is_valid (iter); ol_lrc_iter_next (iter))
{
if (!ol_is_string_empty (ol_lrc_iter_get_text (iter)))
return TRUE;
}
return FALSE;
}