[FFmpeg-devel] rtsp/rdt streaming from bbc (was: ask for advie of doing Qualification task -- M95 Playback System)

[Steven Woolley]

HI Ronald,

> Is it streaming over UDP? I've been told the iPhone blocks UDP
> traffick altogether. To force TCP, add a line "if (lower_transport !=
> RTSP_LOWER_TRANSPORT_TCP) return 1;" at the top of
> make_setup_request() in libavformat/rtsp.c, that will force TCP as
> lower transport and should make any form of RTSP work on the iPhone.
>

Thanks for the suggestion... but it's still not working (so it's not just
the UDP transport).

Here's where it's "hanging"..

in rtsp.c:

static int url_readbuf(URLContext *h, unsigned char *buf, int size)

{

    int ret, len;


    len = 0;

    while (len < size) {

        ret = url_read(h, buf+len, size-len); //<----- HERE

        if (ret < 1)

            return ret;

        len += ret;

    }

    return len;

}


which is hanging here in avio.c:


int url_read(URLContext *h, unsigned char *buf, int size)

{

    int ret;

    if (h->flags & URL_WRONLY)

        return AVERROR(EIO);

    ret = h->prot->url_read(h, buf, size); // <----- HERE

    return ret;

}



So, I'm out of my element here to be sure... but in order to get libmms to
work on the iPhone I had to add a socket timeout to get it to not block (in
a similar fashion).... basically this (in the read from socket function
before doing the actual read):


struct timeval tv;

tv.tv_sec = 20;


tv.tv_usec = 0;

if (setsockopt(socket, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {

      printf("error setting socket read timeout\n");

}


So, is this something that maybe needs to be done with the rtsp code
perhaps?


Steve