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hlsdemux: Fix parsing of CODECS and RESOLUTION

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hlsdemux does not check for the '"' character in #EXT-X-STREAM-INF
attributes. The CODECS parameter is an example of an attribute
that might use the '"' symbol and might contain a ',' character
inside this quoted string.

For example: CODECS="avc1.77.30, mp4a.40.2"

hlsdemux does not correctly parse the RESOLUTION attribute, it
assumes that an '=' character is used to delineate the width
and height values, but the HLS RFC states that a 'x' character
must be used as the delimiter between width and height.

https://bugzilla.gnome.org/show_bug.cgi?id=725140
This commit is contained in:
Alex Ashley 2014-02-21 09:36:51 +00:00 committed by Sebastian Dröge
parent 91775a1abd
commit 161254d7c0
1 changed files with 15 additions and 2 deletions
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17
ext/hls/m3u8.c
View file

@ -168,7 +168,7 @@ double_from_string (gchar * ptr, gchar ** endptr, gdouble * val)
static gboolean
parse_attributes (gchar ** ptr, gchar ** a, gchar ** v)
{
gchar *end, *p;
gchar *end=NULL, *p;
g_return_val_if_fail (ptr != NULL, FALSE);
g_return_val_if_fail (*ptr != NULL, FALSE);
@ -179,6 +179,19 @@ parse_attributes (gchar ** ptr, gchar ** a, gchar ** v)
*a = *ptr;
end = p = g_utf8_strchr (*ptr, -1, ',');
if(end){
gchar *q = g_utf8_strchr (*ptr, -1, '"');
if(q && q<end){
/* special case, such as CODECS="avc1.77.30, mp4a.40.2" */
q = g_utf8_next_char (q);
if(q){
q = g_utf8_strchr (q, -1, '"');
}
if(q){
end = p = g_utf8_strchr (q, -1, ',');
}
}
}
if (end) {
do {
end = g_utf8_next_char (end);
@ -344,7 +357,7 @@ gst_m3u8_update (GstM3U8 * self, gchar * data, gboolean * updated)
} else if (g_str_equal (a, "RESOLUTION")) {
if (!int_from_string (v, &v, &list->width))
GST_WARNING ("Error while reading RESOLUTION width");
if (!v || *v != '=') {
if (!v || *v != 'x') {
GST_WARNING ("Missing height");
} else {
v = g_utf8_next_char (v);