2 * FRSH prototype streaming system
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * @file libavformat/frsh.c
30 #include "os_support.h"
32 #include <sys/select.h>
37 #include <frsh_core_types.h>
39 frsh_vres_id_t last_rtp_vres;
40 frsh_contract_t last_rtp_contract;
50 struct sockaddr_in dest_addr;
53 frsh_send_endpoint_t sepoint;
54 frsh_receive_endpoint_t repoint;
56 frsh_send_endpoint_protocol_info_t send_pinfo;
57 frsh_contract_t contract;
58 frsh_contract_label_t label;
59 frsh_rel_time_t budget, period, deadline;
62 #define FRSH_TX_BUF_SIZE 32768
63 #define FRSH_MAX_PKT_SIZE 65536
65 static int frsh_set_url(struct sockaddr_in *addr, const char *hostname, int port)
67 /* set the destination address */
68 if (resolve_host(&addr->sin_addr, hostname) < 0)
70 addr->sin_family = AF_INET;
71 addr->sin_port = htons(port);
73 return sizeof(struct sockaddr_in);
76 static int is_multicast_address(struct sockaddr_in *addr)
81 static void print_error(int err, char *str)
83 char error_string[1024];
84 frsh_strerror(err , error_string, sizeof(error_string));
85 av_log(NULL, AV_LOG_ERROR, "%s: error %d: %s\n", str, err, error_string);
89 frsh_output_socket_create(FRSHContext *s)
91 static long int netcont_num = 0;
93 char netcont_name[20];
94 struct sockaddr_in addr;
97 addr.sin_family = AF_INET;
98 addr.sin_addr.s_addr = htonl (INADDR_ANY);
99 addr.sin_port = htons(s->local_port);
100 addr_len = sizeof(addr);
102 /* set params for contract */
103 s->send_pinfo.body = NULL;
105 frsh_fd = frsh_send_endpoint_create(FRSH_NETPF_FWP,
106 s->dest_addr.sin_addr.s_addr,
107 ntohs(s->dest_addr.sin_port), s->send_pinfo,
114 /* Contract negotiation */
115 ret = frsh_contract_init(&s->contract);
116 //if (ret) PERROR_AND_EXIT(ret, "frsh_contract_init");
119 ret = frsh_contract_set_basic_params(&s->contract,
124 //if (ret) PERROR_AND_EXIT(ret, "frsh_contract_set_basic_params");
126 snprintf(netcont_name, sizeof(netcont_name), "ffmpeg%02ld", ++netcont_num);
127 ret = frsh_contract_set_resource_and_label(&s->contract,FRSH_RT_NETWORK,
129 s->label[0] ? s->label : netcont_name);
130 //if (ret) PERROR_AND_EXIT(ret, "frsh_contract_set_resource_and_label");
133 if (frsh_rel_time_to_nsec(s->deadline) > 0) {
134 ret = frsh_contract_set_timing_reqs(&s->contract, false, &s->deadline);
138 ret = frsh_contract_negotiate(&s->contract, &s->vres);
139 if (ret) print_error(ret, "frsh_contract_negotiate");
142 printf("Send endpoint created\n");
143 frsh_send_endpoint_bind(s->vres, s->sepoint);
144 printf("Send endpoint bounded\n");
146 //fwp_endpoint_get_params(s->sepoint->protocol_info.body, &node,
147 // &port, &attr, &fd);
149 /* Hack to export network contract to application */
150 if (strcmp(s->label, "RTP") == 0) {
151 last_rtp_contract = s->contract;
152 last_rtp_vres = s->vres;
159 frsh_input_socket_create(FRSHContext *s)
161 frsh_receive_endpoint_protocol_info_t pi = { NULL, 0 };
162 frsh_endpoint_queueing_info_t qi = { .queue_size=0, .queue_policy=FRSH_QRP_OLDEST };
164 return frsh_receive_endpoint_create(FRSH_NETPF_FWP, s->local_port, qi, pi,
170 static int frsh_port(struct sockaddr_in *addr, int len)
172 return ntohs(addr->sin_port);
176 * If no filename is given to av_open_input_file because you want to
177 * get the local port first, then you must call this function to set
178 * the remote server address.
180 * url syntax: frsh://host:port[?option=val...]
181 * option: 'ttl=n' : set the ttl value (for multicast only)
182 * 'localport=n' : set the local port
183 * 'pkt_size=n' : set max packet size
184 * 'reuse=1' : enable reusing the socket
186 * @param s1 media file context
187 * @param uri of the remote server
188 * @return zero if no error.
190 int frsh_set_remote_url(URLContext *h, const char *uri)
192 FRSHContext *s = h->priv_data;
196 url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
198 /* set the destination address */
199 s->dest_addr_len = frsh_set_url(&s->dest_addr, hostname, port);
200 if (s->dest_addr_len < 0) {
203 s->is_multicast = is_multicast_address(&s->dest_addr);
209 * Return the local port used by the FRSH connexion
210 * @param s1 media file context
211 * @return the local port number
213 int frsh_get_local_port(URLContext *h)
215 FRSHContext *s = h->priv_data;
216 return s->local_port;
220 * Return the frsh file handle for select() usage to wait for several RTP
221 * streams at the same time.
222 * @param h media file context
224 #if (LIBAVFORMAT_VERSION_MAJOR >= 53)
227 int frsh_get_file_handle(URLContext *h)
229 FRSHContext *s = h->priv_data;
233 /* put it in FRSH context */
234 /* return non zero if error */
235 static int frsh_open(URLContext *h, const char *uri, int flags)
238 int port, frsh_fd = -1, tmp;
239 FRSHContext *s = NULL;
243 struct sockaddr_in my_addr;
247 h->max_packet_size = 1472;
249 is_output = (flags & URL_WRONLY);
251 if(!ff_network_init())
254 s = av_mallocz(sizeof(FRSHContext));
256 return AVERROR(ENOMEM);
260 s->buffer_size = is_output ? FRSH_TX_BUF_SIZE : FRSH_MAX_PKT_SIZE;
262 p = strchr(uri, '?');
264 s->reuse_socket = find_info_tag(buf, sizeof(buf), "reuse", p);
265 if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
266 s->ttl = strtol(buf, NULL, 10);
268 if (find_info_tag(buf, sizeof(buf), "localport", p)) {
269 s->local_port = strtol(buf, NULL, 10);
271 if (find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
272 h->max_packet_size = strtol(buf, NULL, 10);
274 if (find_info_tag(buf, sizeof(buf), "buffer_size", p)) {
275 s->buffer_size = strtol(buf, NULL, 10);
277 if (!find_info_tag(s->label, sizeof(s->label),
278 "contract_label", p)) {
281 if (find_info_tag(buf, sizeof(buf), "budget", p)) {
282 frsh_network_bytes_to_budget(FRSH_NETPF_FWP, strtol(buf, NULL, 10), &s->budget);
284 if (find_info_tag(buf, sizeof(buf), "period", p)) {
285 s->period=frsh_msec_to_rel_time(strtol(buf, NULL, 10));
287 if (find_info_tag(buf, sizeof(buf), "deadline", p)) {
288 s->deadline=frsh_msec_to_rel_time(strtol(buf, NULL, 10));
292 /* fill the dest addr */
293 url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
295 /* XXX: fix url_split */
296 if (hostname[0] == '\0' || hostname[0] == '?') {
297 /* only accepts null hostname if input */
298 if (flags & URL_WRONLY)
301 frsh_set_remote_url(h, uri);
305 frsh_fd = frsh_output_socket_create(s);
307 frsh_fd = frsh_input_socket_create(s);
312 if (setsockopt (frsh_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
315 /* bind to the local address if not multicast or if the multicast
317 /*if (bind_ret < 0 && bind(frsh_fd,(struct sockaddr *)&my_addr, len) < 0)
321 len = sizeof(my_addr);
322 getsockname(frsh_fd, (struct sockaddr *)&my_addr, &len);
323 s->local_port = frsh_port(&my_addr, len);
326 /* limit the tx buf size to limit latency */
327 tmp = s->buffer_size;
328 if (setsockopt(frsh_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
329 av_log(NULL, AV_LOG_ERROR, "setsockopt(SO_SNDBUF): %s\n", strerror(errno));
333 /* set frsh recv buffer size to the largest possible frsh packet size to
334 * avoid losing data on OSes that set this too low by default. */
335 tmp = s->buffer_size;
336 if (setsockopt(frsh_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) {
337 av_log(NULL, AV_LOG_WARNING, "setsockopt(SO_RECVBUF): %s\n", strerror(errno));
339 /* make the socket non-blocking */
340 ff_socket_nonblock(frsh_fd, 1);
342 s->frsh_fd = frsh_fd;
347 closesocket(frsh_fd);
352 static int frsh_read(URLContext *h, uint8_t *buf, int size)
354 FRSHContext *s = h->priv_data;
358 return frsh_receive_sync(s->repoint, buf, size, &len, &from);
361 static int frsh_write(URLContext *h, uint8_t *buf, int size)
363 FRSHContext *s = h->priv_data;
366 ret = frsh_send_sync(s->sepoint, buf, size);
367 /* Do not tell FFMPEG that the packet is bigger than current
369 if (ret < 0 && errno == ENOSR)
374 static int frsh_close(URLContext *h)
376 FRSHContext *s = h->priv_data;
379 frsh_send_endpoint_unbind(s->sepoint);
380 ret = frsh_contract_cancel(s->vres);
381 frsh_contract_destroy(s->contract);
385 URLProtocol frsh_protocol = {
392 .url_get_file_handle = frsh_get_file_handle,