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Revert "avformat/rtp: Pass sources and block filter addresses via sdp file for rtp" 

This reverts commit b71685865f.

The commit lead to the use of an uninitialized variable.
Other issues were listed by Andreas Rheinhardt:
https://ffmpeg.org/pipermail/ffmpeg-devel/2020-March/259150.html
This commit is contained in:
Carl Eugen Hoyos 2020-04-05 11:58:02 +02:00
parent 7b0f7a7f3b
commit 8b1f07ef51
1 changed files with 9 additions and 40 deletions
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49
libavformat/rtsp.c
View File

@ -2447,8 +2447,8 @@ static int rtp_probe(const AVProbeData *p)
static int rtp_read_header(AVFormatContext *s) static int rtp_read_header(AVFormatContext *s)
{ {
uint8_t recvbuf[RTP_MAX_PACKET_LENGTH]; uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
char host[500], sdp[1000], filters_buf[1000]; char host[500], sdp[500];
int ret, port, sdp_length, nc; int ret, port;
URLContext* in = NULL; URLContext* in = NULL;
int payload_type; int payload_type;
AVCodecParameters *par = NULL; AVCodecParameters *par = NULL;
@ -2456,7 +2456,6 @@ static int rtp_read_header(AVFormatContext *s)
AVIOContext pb; AVIOContext pb;
socklen_t addrlen = sizeof(addr); socklen_t addrlen = sizeof(addr);
RTSPState *rt = s->priv_data; RTSPState *rt = s->priv_data;
const char *p;
if (!ff_network_init()) if (!ff_network_init())
return AVERROR(EIO); return AVERROR(EIO);
@ -2514,40 +2513,13 @@ static int rtp_read_header(AVFormatContext *s)
av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
NULL, 0, s->url); NULL, 0, s->url);
sdp_length = snprintf(sdp + sdp_length, sizeof(sdp) - sdp_length, snprintf(sdp, sizeof(sdp),
"v=0\r\nc=IN IP%d %s\r\n", "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
addr.ss_family == AF_INET ? 4 : 6, host); addr.ss_family == AF_INET ? 4 : 6, host,
par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
p = strchr(s->url, '?'); par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
if (p) { port, payload_type);
static const char *filters[][2] = {{"sources", "incl"}, {"block", "excl"}, {NULL, NULL}}; av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
int i;
char *q;
for (i = 0; filters[i][0]; i++) {
if (av_find_info_tag(filters_buf, sizeof(filters_buf), filters[i][0], p)) {
q = filters_buf;
while ((q = strchr(q, ',')) != NULL)
*q = ' ';
nc = snprintf(sdp + sdp_length, sizeof(sdp) - sdp_length,
"a=source-filter:%s IN IP%d %s %s\r\n",
filters[i][1],
addr.ss_family == AF_INET ? 4 : 6, host,
filters_buf);
if (nc < 0 || nc + sdp_length >= sizeof(sdp))
goto fail_nobuf;
sdp_length += nc;
}
}
}
nc = snprintf(sdp + sdp_length, sizeof(sdp) - sdp_length,
"m=%s %d RTP/AVP %d\r\n",
par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
port, payload_type);
if (nc < 0 || nc + sdp_length >= sizeof(sdp))
goto fail_nobuf;
sdp_length += nc;
avcodec_parameters_free(&par); avcodec_parameters_free(&par);
ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL); ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
@ -2562,9 +2534,6 @@ static int rtp_read_header(AVFormatContext *s)
s->pb = NULL; s->pb = NULL;
return ret; return ret;
fail_nobuf:
ret = AVERROR(ENOBUFS);
av_log(s, AV_LOG_ERROR, "rtp_read_header(): not enough buffer space for sdp-headers\n");
fail: fail:
avcodec_parameters_free(&par); avcodec_parameters_free(&par);
if (in) if (in)