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rtsp: Don't store RTSPStream in AVStream->priv_data 

For mpegts in RTP, there isn't a direct mapping between RTSPStreams
and AVStreams, and the RTSPStream isn't ever stored in
AVStream->priv_data, which was earlier leaked. The fix for this
leak, in ea7f080749, lead to
double frees for other, normal RTP streams.

This patch avoids storing RTSPStreams in AVStream->priv_data, thus
avoiding the double free. The RTSPStreams are always available via
RTSPState->rtsp_streams anyway.

Tested with MS-RTSP, RealRTSP, DSS and mpegts/RTP.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Martin Storsjö 2011-02-02 11:08:01 +02:00 committed by Luca Barbato
parent 87e4d9b252
commit d9c0510e22
2 changed files with 6 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
libavformat/rtsp.c
View File

@ -273,8 +273,7 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
s1->default_ip = sdp_ip;
s1->default_ttl = ttl;
} else {
st = s->streams[s->nb_streams - 1];
rtsp_st = st->priv_data;
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
rtsp_st->sdp_ip = sdp_ip;
rtsp_st->sdp_ttl = ttl;
}
@ -326,7 +325,6 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
st = av_new_stream(s, 0);
if (!st)
return;
st->priv_data = rtsp_st;
rtsp_st->stream_index = st->index;
st->codec->codec_type = codec_type;
if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
@ -355,8 +353,7 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
} else {
char proto[32];
/* get the control url */
st = s->streams[s->nb_streams - 1];
rtsp_st = st->priv_data;
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
/* XXX: may need to add full url resolution */
av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
@ -377,7 +374,7 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
get_word(buf1, sizeof(buf1), &p);
payload_type = atoi(buf1);
st = s->streams[s->nb_streams - 1];
rtsp_st = st->priv_data;
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
} else if (av_strstart(p, "fmtp:", &p) ||
av_strstart(p, "framesize:", &p)) {
@ -385,9 +382,8 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
// let dynamic protocol handlers have a stab at the line.
get_word(buf1, sizeof(buf1), &p);
payload_type = atoi(buf1);
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
rtsp_st = st->priv_data;
for (i = 0; i < rt->nb_rtsp_streams; i++) {
rtsp_st = rt->rtsp_streams[i];
if (rtsp_st->sdp_payload_type == payload_type &&
rtsp_st->dynamic_handler &&
rtsp_st->dynamic_handler->parse_sdp_a_line)
@ -417,7 +413,7 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
if (rt->server_type == RTSP_SERVER_REAL)
ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
if (rtsp_st->dynamic_handler &&
rtsp_st->dynamic_handler->parse_sdp_a_line)
rtsp_st->dynamic_handler->parse_sdp_a_line(s,

2
libavformat/rtspenc.c
View File

@ -79,14 +79,12 @@ int ff_rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
/* Set up the RTSPStreams for each AVStream */
for (i = 0; i < s->nb_streams; i++) {
RTSPStream *rtsp_st;
AVStream *st = s->streams[i];
rtsp_st = av_mallocz(sizeof(RTSPStream));
if (!rtsp_st)
return AVERROR(ENOMEM);
dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
st->priv_data = rtsp_st;
rtsp_st->stream_index = i;
av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));