src_movie: fix scanf string

Fixes out of array accesses

Michael Niedermayer committed 13 years ago

Commit adaa7741 parent 369a1201 file · +3 −3Browse files

Unified · Split

libavfilter/src_movie.c+3−3

@@ -92,13 +92,13 @@ static int movie_request_frame(AVFilterLink *outlink); · 91 unmodified lines
92	92	static AVStream find_stream(void log, AVFormatContext avf, const char spec)
93	93	{
94	94	int i, ret, already = 0, stream_id = -1;
95		− char type_char, dummy;
	95	+ char type_char[2], dummy;
96	96	AVStream *found = NULL;
97	97	enum AVMediaType type;
98	98
99		− ret = sscanf(spec, "d%[av]%d%c", &type_char, &stream_id, &dummy);
	99	+ ret = sscanf(spec, "d%1[av]%d%c", type_char, &stream_id, &dummy);
100	100	if (ret >= 1 && ret <= 2) {
101		− type = type_char == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
	101	+ type = type_char[0] == 'v' ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
102	102	ret = av_find_best_stream(avf, type, stream_id, -1, NULL, 0);
103	103	if (ret < 0) {
104	104	av_log(log, AV_LOG_ERROR, "No %s stream with index '%d' found\n",