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avformat/rtsp: load the sdp file with avio_read_to_bprint() 

this allows getting rid of the hardcoded max size of SDP.

Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2021-12-02 18:12:12 +08:00
parent 3c74ffb01a
commit 98054e4f01
1 changed files with 9 additions and 16 deletions
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25
libavformat/rtsp.c
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@ -2372,9 +2372,9 @@ static int sdp_read_header(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;
RTSPStream *rtsp_st;
int size, i, err;
char *content;
int i, err;
char url[MAX_URL_SIZE];
AVBPrint bp;
if (!ff_network_init())
return AVERROR(EIO);
@ -2385,22 +2385,15 @@ static int sdp_read_header(AVFormatContext *s)
rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
/* read the whole sdp file */
/* XXX: better loading */
content = av_malloc(SDP_MAX_SIZE);
if (!content) {
av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
err = avio_read_to_bprint(s->pb, &bp, INT_MAX);
if (err < 0 ) {
ff_network_close();
return AVERROR(ENOMEM);
av_bprint_finalize(&bp, NULL);
return err;
}
size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
if (size <= 0) {
av_free(content);
ff_network_close();
return AVERROR_INVALIDDATA;
}
content[size] ='\0';
err = ff_sdp_parse(s, content);
av_freep(&content);
err = ff_sdp_parse(s, bp.str);
av_bprint_finalize(&bp, NULL);
if (err) goto fail;
/* open each RTP stream */