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subparse: Add support for parsing LRC subtitles

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=678590
This commit is contained in:
Sebastian Dröge 2013-12-18 15:24:02 +01:00
parent bc2342e4ad
commit 218d0702c9
1 changed files with 36 additions and 1 deletions
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37
gst/subparse/gstsubparse.c
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@ -60,7 +60,8 @@ static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/x-subtitle; application/x-subtitle-sami; "
"application/x-subtitle-tmplayer; application/x-subtitle-mpl2; "
"application/x-subtitle-dks; application/x-subtitle-qttext")
"application/x-subtitle-dks; application/x-subtitle-qttext;"
"application/x-subtitle-lrc;")
);
static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
@ -373,6 +374,8 @@ gst_sub_parse_get_format_description (GstSubParseFormat format)
return "DKS";
case GST_SUB_PARSE_FORMAT_QTTEXT:
return "QTtext";
case GST_SUB_PARSE_FORMAT_LRC:
return "LRC";
default:
case GST_SUB_PARSE_FORMAT_UNKNOWN:
break;
@ -917,6 +920,34 @@ parse_subrip (ParserState * state, const gchar * line)
}
}
static gchar *
parse_lrc (ParserState * state, const gchar * line)
{
gint m, s, c;
const gchar *start;
gint milli;
if (line[0] != '[')
return NULL;
if (sscanf (line, "[%u:%02u.%03u]", &m, &s, &c) != 3 &&
sscanf (line, "[%u:%02u.%02u]", &m, &s, &c) != 3)
return NULL;
start = strchr (line, ']');
if (start - line == 9)
milli = 10;
else
milli = 1;
state->start_time = gst_util_uint64_scale (m, 60 * GST_SECOND, 1)
+ gst_util_uint64_scale (s, GST_SECOND, 1)
+ gst_util_uint64_scale (c, milli * GST_MSECOND, 1);
state->duration = GST_CLOCK_TIME_NONE;
return g_strdup (start + 1);
}
static void
unescape_newlines_br (gchar * read)
{
@ -1379,6 +1410,10 @@ gst_sub_parse_format_autodetect (GstSubParse * self)
qttext_context_init (&self->state);
return gst_caps_new_simple ("text/x-raw",
"format", G_TYPE_STRING, "pango-markup", NULL);
case GST_SUB_PARSE_FORMAT_LRC:
self->parse_line = parse_lrc;
return gst_caps_new_simple ("text/x-raw",
"format", G_TYPE_STRING, "utf8", NULL);
case GST_SUB_PARSE_FORMAT_UNKNOWN:
default:
GST_DEBUG ("no subtitle format detected");