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typefinding: use subtitle/x-kate for Kate subtitle streams and application/x-kate for the rest

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Differentiate subtitle streams and lyrics/cracktastic/complex streams via
the category string in the headers. This seems like a useful distinction
to make, and also seems more future-proof. See #525743.
This commit is contained in:
Tim-Philipp Müller 2009-07-13 22:51:48 +01:00
parent 0a5d5206f3
commit d53e754d42
2 changed files with 30 additions and 3 deletions
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3
gst-libs/gst/pbutils/descriptions.c
View file

@ -215,7 +215,8 @@ static const FormatInfo formats[] = {
/* subtitle formats with static descriptions */
{"application/x-subtitle-sami", N_("Sami subtitle format"), 0},
{"application/x-subtitle-tmplayer", N_("TMPlayer subtitle format"), 0},
{"application/x-kate", N_("Kate subtitle format"), 0},
{"application/x-kate", "Kate", 0},
{"subtitle/x-kate", N_("Kate subtitle format"), 0},
/* add variant field to typefinder? { "application/x-subtitle", N_("subtitle"), 0}, */
/* non-audio/video/container formats */

30
gst/typefind/gsttypefindfunctions.c
View file

@ -2672,6 +2672,32 @@ theora_type_find (GstTypeFind * tf, gpointer private)
}
}
/*** kate ***/
static void
kate_type_find (GstTypeFind * tf, gpointer private)
{
guint8 *data = gst_type_find_peek (tf, 0, 64);
gchar category[16] = { 0, };
if (G_UNLIKELY (data == NULL))
return;
/* see: http://wiki.xiph.org/index.php/OggKate#Format_specification */
if (G_LIKELY (memcmp (data, "\200kate\0\0\0", 8) != 0))
return;
/* make sure we always have a NUL-terminated string */
memcpy (category, data + 48, 15);
GST_LOG ("kate category: %s", category);
if (strstr (category, "subtitle") != NULL) {
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
"subtitle/x-kate", NULL);
} else {
gst_type_find_suggest_simple (tf, GST_TYPE_FIND_MAXIMUM,
"application/x-kate", NULL);
}
}
/*** application/x-ogm-video or audio***/
static GstStaticCaps ogmvideo_caps =
@ -3416,8 +3442,8 @@ plugin_init (GstPlugin * plugin)
zip_exts, "PK\003\004", 4, GST_TYPE_FIND_LIKELY);
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-compress",
GST_RANK_SECONDARY, compress_exts, "\037\235", 2, GST_TYPE_FIND_LIKELY);
TYPE_FIND_REGISTER_START_WITH (plugin, "application/x-kate",
GST_RANK_MARGINAL, NULL, "\200kate\0\0\0", 8, GST_TYPE_FIND_LIKELY);
TYPE_FIND_REGISTER (plugin, "subtitle/x-kate", GST_RANK_MARGINAL,
kate_type_find, NULL, NULL, NULL, NULL);
TYPE_FIND_REGISTER (plugin, "audio/x-flac", GST_RANK_PRIMARY,
flac_type_find, flac_exts, FLAC_CAPS, NULL, NULL);
TYPE_FIND_REGISTER (plugin, "audio/x-vorbis", GST_RANK_PRIMARY,