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qtdemux: fix some 3GP tag extraction (keywords, genre, location)

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This commit is contained in:
Mark Nauwelaerts 2009-06-10 12:34:43 +02:00
parent 0f0117aabb
commit 0d2db95453
1 changed files with 103 additions and 19 deletions
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122
gst/qtdemux/qtdemux.c
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@ -4517,10 +4517,10 @@ static inline gboolean
qtdemux_is_string_3gp (GstQTDemux * qtdemux, guint32 fourcc)
{
/* Detect if the tag must be handled as 3gpp - i18n metadata. The first
* check is for catching all the possible brands, e.g. 3gp4,3gp5,.. and
* check is for catching all the possible brands, e.g. 3gp4,3gp5,3gg6,.. and
* handling properly the tags present in more than one brand.*/
return ((qtdemux->major_brand & GST_MAKE_FOURCC (255, 255, 255, 0)) ==
GST_MAKE_FOURCC ('3', 'g', 'p', 0)
return ((qtdemux->major_brand & GST_MAKE_FOURCC (255, 255, 0, 0)) ==
GST_MAKE_FOURCC ('3', 'g', 0, 0)
&& (fourcc == FOURCC_cprt || fourcc == FOURCC_gnre
|| fourcc == FOURCC_kywd)) || fourcc == FOURCC_titl
|| fourcc == FOURCC_dscp || fourcc == FOURCC_perf || fourcc == FOURCC_auth
@ -4534,38 +4534,49 @@ qtdemux_tag_add_location (GstQTDemux * qtdemux, const char *tag,
const gchar *env_vars[] = { "GST_QT_TAG_ENCODING", "GST_TAG_ENCODING", NULL };
int offset;
char *name;
gchar *data;
gdouble longitude, latitude, altitude;
data = node->data;
offset = 14;
/* TODO: language code skipped */
name = gst_tag_freeform_string_to_utf8 ((char *) node->data + offset,
-1, env_vars);
name = gst_tag_freeform_string_to_utf8 (data + offset, -1, env_vars);
if (!name) {
GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8", tag);
/* do not alarm in trivial case, but bail out otherwise */
if (*(data + offset) != 0) {
GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8, "
"giving up", tag);
}
} else {
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
GST_TAG_GEO_LOCATION_NAME, name, NULL);
offset += strlen (name);
g_free (name);
}
/* +1 = skip location role byte */
offset += strlen (name) + 1 + 1;
longitude = QT_FP32 ((guint8 *) node->data + offset);
/* +1 +1 = skip null-terminator and location role byte */
offset += 1 + 1;
longitude = QT_FP32 (data + offset);
offset += 4;
latitude = QT_FP32 ((guint8 *) node->data + offset);
latitude = QT_FP32 (data + offset);
offset += 4;
altitude = QT_FP32 ((guint8 *) node->data + offset);
altitude = QT_FP32 (data + offset);
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
GST_TAG_GEO_LOCATION_NAME, name,
GST_TAG_GEO_LOCATION_LATITUDE, latitude,
GST_TAG_GEO_LOCATION_LONGITUDE, longitude,
GST_TAG_GEO_LOCATION_ELEVATION, altitude, NULL);
/* one invalid means all are invalid */
if (longitude >= -180.0 && longitude <= 180.0 &&
latitude >= -90.0 && latitude <= 90.0) {
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE,
GST_TAG_GEO_LOCATION_LATITUDE, latitude,
GST_TAG_GEO_LOCATION_LONGITUDE, longitude,
GST_TAG_GEO_LOCATION_ELEVATION, altitude, NULL);
}
/* TODO: no GST_TAG_, so astronomical body and additional notes skipped */
g_free (name);
}
@ -4677,6 +4688,75 @@ qtdemux_tag_add_str (GstQTDemux * qtdemux, const char *tag, const char *dummy,
}
}
static void
qtdemux_tag_add_keywords (GstQTDemux * qtdemux, const char *tag,
const char *dummy, GNode * node)
{
const gchar *env_vars[] = { "GST_QT_TAG_ENCODING", "GST_TAG_ENCODING", NULL };
guint8 *data;
char *s, *t, *k = NULL;
int len;
int offset;
int count;
/* re-route to normal string tag if not 3GP */
if (!qtdemux_is_string_3gp (qtdemux, FOURCC_kywd))
return qtdemux_tag_add_str (qtdemux, tag, dummy, node);
GST_DEBUG_OBJECT (qtdemux, "found 3gpp keyword tag");
data = node->data;
len = QT_UINT32 (data);
if (len < 15)
goto short_read;
count = QT_UINT8 (data + 14);
offset = 15;
for (; count; count--) {
gint slen;
if (offset + 1 > len)
goto short_read;
slen = QT_UINT8 (data + offset);
offset += 1;
if (offset + slen > len)
goto short_read;
s = gst_tag_freeform_string_to_utf8 ((char *) node->data + offset,
slen, env_vars);
if (s) {
GST_DEBUG_OBJECT (qtdemux, "adding keyword %s", GST_STR_NULL (s));
if (k) {
t = g_strjoin (",", k, s, NULL);
g_free (s);
g_free (k);
k = t;
} else {
k = s;
}
} else {
GST_DEBUG_OBJECT (qtdemux, "failed to convert keyword to UTF-8");
}
offset += slen;
}
done:
if (k) {
GST_DEBUG_OBJECT (qtdemux, "adding tag %s", GST_STR_NULL (k));
gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag, k, NULL);
}
g_free (k);
return;
/* ERRORS */
short_read:
{
GST_DEBUG_OBJECT (qtdemux, "short read parsing 3GP keywords");
goto done;
}
}
static void
qtdemux_tag_add_num (GstQTDemux * qtdemux, const char *tag1,
const char *tag2, GNode * node)
@ -4827,6 +4907,10 @@ qtdemux_tag_add_gnre (GstQTDemux * qtdemux, const char *tag, const char *dummy,
int type;
int n;
/* re-route to normal string tag if 3GP */
if (qtdemux_is_string_3gp (qtdemux, FOURCC_gnre))
return qtdemux_tag_add_str (qtdemux, tag, dummy, node);
data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
if (data) {
len = QT_UINT32 (data->data);
@ -4880,7 +4964,7 @@ static const struct
FOURCC_gnre, GST_TAG_GENRE, NULL, qtdemux_tag_add_gnre}, {
FOURCC_tmpo, GST_TAG_BEATS_PER_MINUTE, NULL, qtdemux_tag_add_tmpo}, {
FOURCC_covr, GST_TAG_PREVIEW_IMAGE, NULL, qtdemux_tag_add_covr}, {
FOURCC_kywd, GST_TAG_KEYWORDS, NULL, qtdemux_tag_add_str}, {
FOURCC_kywd, GST_TAG_KEYWORDS, NULL, qtdemux_tag_add_keywords}, {
FOURCC_keyw, GST_TAG_KEYWORDS, NULL, qtdemux_tag_add_str}, {
FOURCC__enc, GST_TAG_ENCODER, NULL, qtdemux_tag_add_str}, {
FOURCC_loci, GST_TAG_GEO_LOCATION_NAME, NULL, qtdemux_tag_add_location}, {