Not sure where to start with this message
a) Not even vaguely related to the original topic, you should start a new
thread when the topic is wildly different.
b) Do not start a new thread.
c) This code is from libav (or actually, maybe ffmpeg). av_XXX are macros,
functions and other values. The AV prefix is a hint to the user (you) that
it's part of the av library. AV stands for audio/visual (or I suppose,
audio/video these days)
d) This is a question that should be on www.stackoverflow.com
e) Please do not reply to this message. (at least regarding this new topic)
On Tuesday, 18 September 2018 21:15:42 UTC+1, dan Med wrote:
>
> I was reading this code but i can't figure outwhat av_..._.. stands for
> is it already opening the connection here?
>
> static int tcp_open(URLContext *h, const char *uri, int flags){ struct
> addrinfo hints = { 0 }, *ai, *cur_ai; int port, fd = -1; TCPContext *s
> = h->priv_data; const char *p; char buf[256]; int ret; char
> hostname[1024],proto[1024],path[1024]; char portstr[10];
> s->open_timeout = 5000000; av_url_split(proto, sizeof(proto), NULL, 0,
> hostname, sizeof(hostname), &port, path, sizeof(path), uri); if
> (strcmp(proto, "tcp")) return AVERROR(EINVAL); if (port <= 0 ||
> port >= 65536) { av_log(h, AV_LOG_ERROR, "Port missing in uri\n");
> return AVERROR(EINVAL); } p = strchr(uri, '?'); if (p) {
> if (av_find_info_tag(buf, sizeof(buf), "listen", p)) { char
> *endptr = NULL; s->listen = strtol(buf, &endptr, 10);
> /* assume if no digits were found it is a request to enable it */
> if (buf == endptr) s->listen = 1; } if
> (av_find_info_tag(buf, sizeof(buf), "timeout", p)) { s->rw_timeout
> = strtol(buf, NULL, 10); } if (av_find_info_tag(buf,
> sizeof(buf), "listen_timeout", p)) { s->listen_timeout =
> strtol(buf, NULL, 10); } } if (s->rw_timeout >= 0) {
> s->open_timeout = h->rw_timeout = s->rw_timeout; }
> hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM;
> snprintf(portstr, sizeof(portstr), "%d", port); if (s->listen)
> hints.ai_flags |= AI_PASSIVE; if (!hostname[0]) ret =
> getaddrinfo(NULL, portstr, &hints, &ai); else ret =
> getaddrinfo(hostname, portstr, &hints, &ai); if (ret) { av_log(h,
> AV_LOG_ERROR, "Failed to resolve hostname %s: %s\n",
> hostname, gai_strerror(ret)); return AVERROR(EIO); } cur_ai =
> ai; restart:#if HAVE_STRUCT_SOCKADDR_IN6 // workaround for IOS9
> getaddrinfo in IPv6 only network use hardcode IPv4 address can not resolve
> port number. if (cur_ai->ai_family == AF_INET6){ struct
> sockaddr_in6 * sockaddr_v6 = (struct sockaddr_in6 *)cur_ai->ai_addr;
> if (!sockaddr_v6->sin6_port){ sockaddr_v6->sin6_port =
> htons(port); } }#endif fd = ff_socket(cur_ai->ai_family,
> cur_ai->ai_socktype, cur_ai->ai_protocol); if
> (fd < 0) { ret = ff_neterrno(); goto fail; } /* Set the
> socket's send or receive buffer sizes, if specified. If unspecified or
> setting fails, system default is used. */ if (s->recv_buffer_size > 0) {
> setsockopt (fd, SOL_SOCKET, SO_RCVBUF, &s->recv_buffer_size, sizeof
> (s->recv_buffer_size)); } if (s->send_buffer_size > 0) {
> setsockopt (fd, SOL_SOCKET, SO_SNDBUF, &s->send_buffer_size, sizeof
> (s->send_buffer_size)); } if (s->tcp_nodelay > 0) { setsockopt
> (fd, IPPROTO_TCP, TCP_NODELAY, &s->tcp_nodelay, sizeof (s->tcp_nodelay));
> } if (s->listen == 2) { // multi-client if ((ret =
> ff_listen(fd, cur_ai->ai_addr, cur_ai->ai_addrlen)) < 0) goto
> fail1; } else if (s->listen == 1) { // single client if
> ((ret = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
> s->listen_timeout, h)) < 0) goto fail1;
> // Socket descriptor already closed here. Safe to overwrite to client one.
> fd = ret; } else { if ((ret = ff_listen_connect(fd,
> cur_ai->ai_addr, cur_ai->ai_addrlen,
> s->open_timeout / 1000, h, !!cur_ai->ai_next)) < 0) { if (ret ==
> AVERROR_EXIT) goto fail1; else goto
> fail; } } h->is_streamed = 1; s->fd = fd;
> freeaddrinfo(ai); return 0; fail: if (cur_ai->ai_next) { /*
> Retry with the next sockaddr */ cur_ai = cur_ai->ai_next; if
> (fd >= 0) closesocket(fd); ret = 0; goto restart;
> } fail1: if (fd >= 0) closesocket(fd); freeaddrinfo(ai);
> return ret;}
>
>
> Il giorno mar 18 set 2018 alle ore 21:54 dan Med <[email protected]
> <javascript:>> ha scritto:
>
>> I know that i might have written the same thing over and over again but i
>> didn't get an answer (which i really need)
>>
>> When is ArrayBufferBuilder::Append called ?
>> Thank you
>>
>> Il giorno sab 15 set 2018 alle ore 12:34 dan Med <[email protected]
>> <javascript:>> ha scritto:
>>
>>> That’s all.
>>>
>>> On Fri, 14 Sep 2018 at 21:53, dan Med <[email protected] <javascript:>>
>>> wrote:
>>>
>>>> I don’t understand how that code could be helpful to me..
>>>>
>>>> On Fri, 14 Sep 2018 at 21:51, dan Med <[email protected]
>>>> <javascript:>> wrote:
>>>>
>>>>> Technica question, when Arraybufferbuilder:append will be called ?
>>>>>
>>>>> On Fri, 14 Sep 2018 at 01:14, Peter Schow <[email protected]
>>>>> <javascript:>> wrote:
>>>>>
>>>>>> On Thu, Sep 13, 2018 at 10:45 AM dan Med <[email protected]
>>>>>> <javascript:>> wrote:
>>>>>> > That isn’t my question....
>>>>>> > Arraybufferbuilder:append how could I get that to be called.
>>>>>> > What I really need is a little guidance on how to understand how v8
>>>>>> will parse my JavaScript script and how it will allocate the data.
>>>>>> > Maybe even how a buffer or if there’s something that describes how
>>>>>> buffers are handeled or if there’s a file or code that tells me that not
>>>>>> the memory I know... just how it will execute it that’s all
>>>>>>
>>>>>> Starting with the sample REPL code at:
>>>>>> https://github.com/v8/v8/blob/master/samples/shell.cc
>>>>>>
>>>>>> could answer your questions. In the days that you've been pursuing
>>>>>> this, you could have traced all this by now. Good luck.
>>>>>>
>>>>>> --
>>>>>> --
>>>>>> v8-users mailing list
>>>>>> [email protected] <javascript:>
>>>>>> http://groups.google.com/group/v8-users
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>>>>>> To unsubscribe from this group and stop receiving emails from it,
>>>>>> send an email to [email protected] <javascript:>.
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>>>>>>
>>>>>
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