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Code Issues Releases Activity

udp: Use AVOptions

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Add AVOptions for options currently available as url parameters.
This commit is contained in:
Luca Barbato 2015-03-13 17:00:12 +01:00
parent a4c5801070
commit 66028b7ba6
1 changed files with 53 additions and 6 deletions
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59
libavformat/udp.c
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@ -30,6 +30,7 @@
#include "avio_internal.h"
#include "libavutil/parseutils.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "internal.h"
#include "network.h"
#include "os_support.h"
@ -44,17 +45,44 @@ typedef struct UDPContext {
int udp_fd;
int ttl;
int buffer_size;
int pkt_size;
int is_multicast;
int local_port;
int reuse_socket;
struct sockaddr_storage dest_addr;
int dest_addr_len;
int is_connected;
char *localaddr;
char *sources;
char *block;
} UDPContext;
#define UDP_TX_BUF_SIZE 32768
#define UDP_MAX_PKT_SIZE 65536
#define OFFSET(x) offsetof(UDPContext, x)
#define D AV_OPT_FLAG_DECODING_PARAM
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "ttl", "Time to live (in milliseconds, multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, INT_MAX, .flags = D|E },
{ "buffer_size", "System data size (in bytes)", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
{ "local_port", "Local port", OFFSET(local_port), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
{ "reuse_socket", "Reuse socket", OFFSET(reuse_socket), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E },
{ "connect", "Connect socket", OFFSET(is_connected), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
{ "pkt_size", "Maximum packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
{ "localaddr", "Local address", OFFSET(localaddr), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
{ "sources", "Source list", OFFSET(sources), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
{ "block", "Block list", OFFSET(block), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
{ NULL }
};
static const AVClass udp_class = {
.class_name = "udp",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static void log_net_error(void *ctx, int level, const char* prefix)
{
char errbuf[100];
@ -411,7 +439,6 @@ static int udp_open(URLContext *h, const char *uri, int flags)
char buf[256];
struct sockaddr_storage my_addr;
socklen_t len;
int reuse_specified = 0;
int i, num_include_sources = 0, num_exclude_sources = 0;
char *include_sources[32], *exclude_sources[32];
@ -420,8 +447,24 @@ static int udp_open(URLContext *h, const char *uri, int flags)
is_output = !(flags & AVIO_FLAG_READ);
s->ttl = 16;
s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
if (s->buffer_size < 0)
s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
if (s->sources) {
if (parse_source_list(s->sources, include_sources,
&num_include_sources,
FF_ARRAY_ELEMS(include_sources)))
goto fail;
}
if (s->block) {
if (parse_source_list(s->block, exclude_sources, &num_exclude_sources,
FF_ARRAY_ELEMS(exclude_sources)))
goto fail;
}
if (s->pkt_size)
h->max_packet_size = s->pkt_size;
p = strchr(uri, '?');
if (p) {
@ -431,7 +474,6 @@ static int udp_open(URLContext *h, const char *uri, int flags)
/* assume if no digits were found it is a request to enable it */
if (buf == endptr)
s->reuse_socket = 1;
reuse_specified = 1;
}
if (av_find_info_tag(buf, sizeof(buf), "ttl", p)) {
s->ttl = strtol(buf, NULL, 10);
@ -478,14 +520,18 @@ static int udp_open(URLContext *h, const char *uri, int flags)
if ((s->is_multicast || !s->local_port) && (h->flags & AVIO_FLAG_READ))
s->local_port = port;
udp_fd = udp_socket_create(s, &my_addr, &len, localaddr);
if (localaddr[0])
udp_fd = udp_socket_create(s, &my_addr, &len, localaddr);
else
udp_fd = udp_socket_create(s, &my_addr, &len, s->localaddr);
if (udp_fd < 0)
goto fail;
/* Follow the requested reuse option, unless it's multicast in which
* case enable reuse unless explicitly disabled.
*/
if (s->reuse_socket || (s->is_multicast && !reuse_specified)) {
if (s->reuse_socket > 0 || (s->is_multicast && s->reuse_socket < 0)) {
s->reuse_socket = 1;
if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
goto fail;
@ -631,4 +677,5 @@ URLProtocol ff_udp_protocol = {
.url_get_file_handle = udp_get_file_handle,
.priv_data_size = sizeof(UDPContext),
.flags = URL_PROTOCOL_FLAG_NETWORK,
.priv_data_class = &udp_class,
};