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Better error handling
[ffmpeg-lucabe.git] / ffserver.c
blob9bb9f89a129b2a8d80751046d6a335c4e448289a
1 /*
2 * Multiple format streaming server
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include "config.h"
23 #ifndef HAVE_CLOSESOCKET
24 #define closesocket close
25 #endif
26 #include <string.h>
27 #include <stdlib.h>
28 #include "libavutil/random.h"
29 #include "libavutil/avstring.h"
30 #include "libavformat/avformat.h"
31 #include "libavformat/network.h"
32 #include "libavformat/os_support.h"
33 #include "libavformat/rtp.h"
34 #include "libavformat/rtsp.h"
35
36 #include <stdarg.h>
37 #include <unistd.h>
38 #include <fcntl.h>
39 #include <sys/ioctl.h>
40 #ifdef HAVE_POLL_H
41 #include <poll.h>
42 #endif
43 #include <errno.h>
44 #include <sys/time.h>
45 #undef time //needed because HAVE_AV_CONFIG_H is defined on top
46 #include <time.h>
47 #include <sys/wait.h>
48 #include <signal.h>
49 #ifdef HAVE_DLFCN_H
50 #include <dlfcn.h>
51 #endif
52
53 #include "version.h"
54 #include "ffserver.h"
55 #include "cmdutils.h"
56
57 #undef exit
58
59 const char program_name[] = "FFserver";
60 static const int program_birth_year = 2000;
61
62 static const OptionDef options[];
63
64 /* maximum number of simultaneous HTTP connections */
65 #define HTTP_MAX_CONNECTIONS 2000
66
67 enum HTTPState {
68 HTTPSTATE_WAIT_REQUEST,
69 HTTPSTATE_SEND_HEADER,
70 HTTPSTATE_SEND_DATA_HEADER,
71 HTTPSTATE_SEND_DATA, /* sending TCP or UDP data */
72 HTTPSTATE_SEND_DATA_TRAILER,
73 HTTPSTATE_RECEIVE_DATA,
74 HTTPSTATE_WAIT_FEED, /* wait for data from the feed */
75 HTTPSTATE_READY,
76
77 RTSPSTATE_WAIT_REQUEST,
78 RTSPSTATE_SEND_REPLY,
79 RTSPSTATE_SEND_PACKET,
80 };
81
82 const char *http_state[] = {
83 "HTTP_WAIT_REQUEST",
84 "HTTP_SEND_HEADER",
85
86 "SEND_DATA_HEADER",
87 "SEND_DATA",
88 "SEND_DATA_TRAILER",
89 "RECEIVE_DATA",
90 "WAIT_FEED",
91 "READY",
92
93 "RTSP_WAIT_REQUEST",
94 "RTSP_SEND_REPLY",
95 "RTSP_SEND_PACKET",
96 };
97
98 #define IOBUFFER_INIT_SIZE 8192
99
100 /* timeouts are in ms */
101 #define HTTP_REQUEST_TIMEOUT (15 * 1000)
102 #define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000)
103
104 #define SYNC_TIMEOUT (10 * 1000)
105
106 typedef struct {
107 int64_t count1, count2;
108 int64_t time1, time2;
109 } DataRateData;
110
111 /* context associated with one connection */
112 typedef struct HTTPContext {
113 enum HTTPState state;
114 int fd; /* socket file descriptor */
115 struct sockaddr_in from_addr; /* origin */
116 struct pollfd *poll_entry; /* used when polling */
117 int64_t timeout;
118 uint8_t *buffer_ptr, *buffer_end;
119 int http_error;
120 int post;
121 struct HTTPContext *next;
122 int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
123 int64_t data_count;
124 /* feed input */
125 int feed_fd;
126 /* input format handling */
127 AVFormatContext *fmt_in;
128 int64_t start_time; /* In milliseconds - this wraps fairly often */
129 int64_t first_pts; /* initial pts value */
130 int64_t cur_pts; /* current pts value from the stream in us */
131 int64_t cur_frame_duration; /* duration of the current frame in us */
132 int cur_frame_bytes; /* output frame size, needed to compute
133 the time at which we send each
134 packet */
135 int pts_stream_index; /* stream we choose as clock reference */
136 int64_t cur_clock; /* current clock reference value in us */
137 /* output format handling */
138 struct FFStream *stream;
139 /* -1 is invalid stream */
140 int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
141 int switch_feed_streams[MAX_STREAMS]; /* index of streams in the feed */
142 int switch_pending;
143 AVFormatContext fmt_ctx; /* instance of FFStream for one user */
144 int last_packet_sent; /* true if last data packet was sent */
145 int suppress_log;
146 DataRateData datarate;
147 int wmp_client_id;
148 char protocol[16];
149 char method[16];
150 char url[128];
151 int buffer_size;
152 uint8_t *buffer;
153 int is_packetized; /* if true, the stream is packetized */
154 int packet_stream_index; /* current stream for output in state machine */
155
156 /* RTSP state specific */
157 uint8_t *pb_buffer; /* XXX: use that in all the code */
158 ByteIOContext *pb;
159 int seq; /* RTSP sequence number */
160
161 /* RTP state specific */
162 enum RTSPProtocol rtp_protocol;
163 char session_id[32]; /* session id */
164 AVFormatContext *rtp_ctx[MAX_STREAMS];
165
166 /* RTP/UDP specific */
167 URLContext *rtp_handles[MAX_STREAMS];
168
169 /* RTP/TCP specific */
170 struct HTTPContext *rtsp_c;
171 uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end;
172 } HTTPContext;
173
174 static AVFrame dummy_frame;
175
176 /* each generated stream is described here */
177 enum StreamType {
178 STREAM_TYPE_LIVE,
179 STREAM_TYPE_STATUS,
180 STREAM_TYPE_REDIRECT,
181 };
182
183 enum IPAddressAction {
184 IP_ALLOW = 1,
185 IP_DENY,
186 };
187
188 typedef struct IPAddressACL {
189 struct IPAddressACL *next;
190 enum IPAddressAction action;
191 /* These are in host order */
192 struct in_addr first;
193 struct in_addr last;
194 } IPAddressACL;
195
196 /* description of each stream of the ffserver.conf file */
197 typedef struct FFStream {
198 enum StreamType stream_type;
199 char filename[1024]; /* stream filename */
200 struct FFStream *feed; /* feed we are using (can be null if
201 coming from file) */
202 AVFormatParameters *ap_in; /* input parameters */
203 AVInputFormat *ifmt; /* if non NULL, force input format */
204 AVOutputFormat *fmt;
205 IPAddressACL *acl;
206 int nb_streams;
207 int prebuffer; /* Number of millseconds early to start */
208 int64_t max_time; /* Number of milliseconds to run */
209 int send_on_key;
210 AVStream *streams[MAX_STREAMS];
211 int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
212 char feed_filename[1024]; /* file name of the feed storage, or
213 input file name for a stream */
214 char author[512];
215 char title[512];
216 char copyright[512];
217 char comment[512];
218 pid_t pid; /* Of ffmpeg process */
219 time_t pid_start; /* Of ffmpeg process */
220 char **child_argv;
221 struct FFStream *next;
222 int bandwidth; /* bandwidth, in kbits/s */
223 /* RTSP options */
224 char *rtsp_option;
225 /* multicast specific */
226 int is_multicast;
227 struct in_addr multicast_ip;
228 int multicast_port; /* first port used for multicast */
229 int multicast_ttl;
230 int loop; /* if true, send the stream in loops (only meaningful if file) */
231
232 /* feed specific */
233 int feed_opened; /* true if someone is writing to the feed */
234 int is_feed; /* true if it is a feed */
235 int readonly; /* True if writing is prohibited to the file */
236 int conns_served;
237 int64_t bytes_served;
238 int64_t feed_max_size; /* maximum storage size, zero means unlimited */
239 int64_t feed_write_index; /* current write position in feed (it wraps around) */
240 int64_t feed_size; /* current size of feed */
241 struct FFStream *next_feed;
242 } FFStream;
243
244 typedef struct FeedData {
245 long long data_count;
246 float avg_frame_size; /* frame size averaged over last frames with exponential mean */
247 } FeedData;
248
249 static struct sockaddr_in my_http_addr;
250 static struct sockaddr_in my_rtsp_addr;
251
252 static char logfilename[1024];
253 static HTTPContext *first_http_ctx;
254 static FFStream *first_feed; /* contains only feeds */
255 static FFStream *first_stream; /* contains all streams, including feeds */
256
257 static void new_connection(int server_fd, int is_rtsp);
258 static void close_connection(HTTPContext *c);
259
260 /* HTTP handling */
261 static int handle_connection(HTTPContext *c);
262 static int http_parse_request(HTTPContext *c);
263 static int http_send_data(HTTPContext *c);
264 static void compute_stats(HTTPContext *c);
265 static int open_input_stream(HTTPContext *c, const char *info);
266 static int http_start_receive_data(HTTPContext *c);
267 static int http_receive_data(HTTPContext *c);
268
269 /* RTSP handling */
270 static int rtsp_parse_request(HTTPContext *c);
271 static void rtsp_cmd_describe(HTTPContext *c, const char *url);
272 static void rtsp_cmd_options(HTTPContext *c, const char *url);
273 static void rtsp_cmd_setup(HTTPContext *c, const char *url, RTSPHeader *h);
274 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPHeader *h);
275 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPHeader *h);
276 static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPHeader *h);
277
278 /* SDP handling */
279 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
280 struct in_addr my_ip);
281
282 /* RTP handling */
283 static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
284 FFStream *stream, const char *session_id,
285 enum RTSPProtocol rtp_protocol);
286 static int rtp_new_av_stream(HTTPContext *c,
287 int stream_index, struct sockaddr_in *dest_addr,
288 HTTPContext *rtsp_c);
289
290 static const char *my_program_name;
291 static const char *my_program_dir;
292
293 static const char *config_filename;
294 static int ffserver_debug;
295 static int ffserver_daemon;
296 static int no_launch;
297 static int need_to_start_children;
298
299 static int nb_max_connections;
300 static int nb_connections;
301
302 static int max_bandwidth;
303 static int current_bandwidth;
304
305 static int64_t cur_time; // Making this global saves on passing it around everywhere
306
307 static AVRandomState random_state;
308
309 static FILE *logfile = NULL;
310
311 static void __attribute__ ((format (printf, 1, 2))) http_log(const char *fmt, ...)
312 {
313 va_list ap;
314 va_start(ap, fmt);
315
316 if (logfile) {
317 vfprintf(logfile, fmt, ap);
318 fflush(logfile);
319 }
320 va_end(ap);
321 }
322
323 static char *ctime1(char *buf2)
324 {
325 time_t ti;
326 char *p;
327
328 ti = time(NULL);
329 p = ctime(&ti);
330 strcpy(buf2, p);
331 p = buf2 + strlen(p) - 1;
332 if (*p == '\n')
333 *p = '\0';
334 return buf2;
335 }
336
337 static void log_connection(HTTPContext *c)
338 {
339 char buf2[32];
340
341 if (c->suppress_log)
342 return;
343
344 http_log("%s - - [%s] \"%s %s %s\" %d %"PRId64"\n",
345 inet_ntoa(c->from_addr.sin_addr),
346 ctime1(buf2), c->method, c->url,
347 c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
348 }
349
350 static void update_datarate(DataRateData *drd, int64_t count)
351 {
352 if (!drd->time1 && !drd->count1) {
353 drd->time1 = drd->time2 = cur_time;
354 drd->count1 = drd->count2 = count;
355 } else if (cur_time - drd->time2 > 5000) {
356 drd->time1 = drd->time2;
357 drd->count1 = drd->count2;
358 drd->time2 = cur_time;
359 drd->count2 = count;
360 }
361 }
362
363 /* In bytes per second */
364 static int compute_datarate(DataRateData *drd, int64_t count)
365 {
366 if (cur_time == drd->time1)
367 return 0;
368
369 return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
370 }
371
372
373 static void start_children(FFStream *feed)
374 {
375 if (no_launch)
376 return;
377
378 for (; feed; feed = feed->next) {
379 if (feed->child_argv && !feed->pid) {
380 feed->pid_start = time(0);
381
382 feed->pid = fork();
383
384 if (feed->pid < 0) {
385 fprintf(stderr, "Unable to create children\n");
386 exit(1);
387 }
388 if (!feed->pid) {
389 /* In child */
390 char pathname[1024];
391 char *slash;
392 int i;
393
394 for (i = 3; i < 256; i++)
395 close(i);
396
397 if (!ffserver_debug) {
398 i = open("/dev/null", O_RDWR);
399 if (i)
400 dup2(i, 0);
401 dup2(i, 1);
402 dup2(i, 2);
403 if (i)
404 close(i);
405 }
406
407 av_strlcpy(pathname, my_program_name, sizeof(pathname));
408
409 slash = strrchr(pathname, '/');
410 if (!slash)
411 slash = pathname;
412 else
413 slash++;
414 strcpy(slash, "ffmpeg");
415
416 /* This is needed to make relative pathnames work */
417 chdir(my_program_dir);
418
419 signal(SIGPIPE, SIG_DFL);
420
421 execvp(pathname, feed->child_argv);
422
423 _exit(1);
424 }
425 }
426 }
427 }
428
429 /* open a listening socket */
430 static int socket_open_listen(struct sockaddr_in *my_addr)
431 {
432 int server_fd, tmp;
433
434 server_fd = socket(AF_INET,SOCK_STREAM,0);
435 if (server_fd < 0) {
436 perror ("socket");
437 return -1;
438 }
439
440 tmp = 1;
441 setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
442
443 if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
444 char bindmsg[32];
445 snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port));
446 perror (bindmsg);
447 closesocket(server_fd);
448 return -1;
449 }
450
451 if (listen (server_fd, 5) < 0) {
452 perror ("listen");
453 closesocket(server_fd);
454 return -1;
455 }
456 ff_socket_nonblock(server_fd, 1);
457
458 return server_fd;
459 }
460
461 /* start all multicast streams */
462 static void start_multicast(void)
463 {
464 FFStream *stream;
465 char session_id[32];
466 HTTPContext *rtp_c;
467 struct sockaddr_in dest_addr;
468 int default_port, stream_index;
469
470 default_port = 6000;
471 for(stream = first_stream; stream != NULL; stream = stream->next) {
472 if (stream->is_multicast) {
473 /* open the RTP connection */
474 snprintf(session_id, sizeof(session_id), "%08x%08x",
475 av_random(&random_state), av_random(&random_state));
476
477 /* choose a port if none given */
478 if (stream->multicast_port == 0) {
479 stream->multicast_port = default_port;
480 default_port += 100;
481 }
482
483 dest_addr.sin_family = AF_INET;
484 dest_addr.sin_addr = stream->multicast_ip;
485 dest_addr.sin_port = htons(stream->multicast_port);
486
487 rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
488 RTSP_PROTOCOL_RTP_UDP_MULTICAST);
489 if (!rtp_c)
490 continue;
491
492 if (open_input_stream(rtp_c, "") < 0) {
493 fprintf(stderr, "Could not open input stream for stream '%s'\n",
494 stream->filename);
495 continue;
496 }
497
498 /* open each RTP stream */
499 for(stream_index = 0; stream_index < stream->nb_streams;
500 stream_index++) {
501 dest_addr.sin_port = htons(stream->multicast_port +
502 2 * stream_index);
503 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) {
504 fprintf(stderr, "Could not open output stream '%s/streamid=%d'\n",
505 stream->filename, stream_index);
506 exit(1);
507 }
508 }
509
510 /* change state to send data */
511 rtp_c->state = HTTPSTATE_SEND_DATA;
512 }
513 }
514 }
515
516 /* main loop of the http server */
517 static int http_server(void)
518 {
519 int server_fd, ret, rtsp_server_fd, delay, delay1;
520 struct pollfd poll_table[HTTP_MAX_CONNECTIONS + 2], *poll_entry;
521 HTTPContext *c, *c_next;
522
523 server_fd = socket_open_listen(&my_http_addr);
524 if (server_fd < 0)
525 return -1;
526
527 rtsp_server_fd = socket_open_listen(&my_rtsp_addr);
528 if (rtsp_server_fd < 0)
529 return -1;
530
531 http_log("ffserver started.\n");
532
533 start_children(first_feed);
534
535 first_http_ctx = NULL;
536 nb_connections = 0;
537
538 start_multicast();
539
540 for(;;) {
541 poll_entry = poll_table;
542 poll_entry->fd = server_fd;
543 poll_entry->events = POLLIN;
544 poll_entry++;
545
546 poll_entry->fd = rtsp_server_fd;
547 poll_entry->events = POLLIN;
548 poll_entry++;
549
550 /* wait for events on each HTTP handle */
551 c = first_http_ctx;
552 delay = 1000;
553 while (c != NULL) {
554 int fd;
555 fd = c->fd;
556 switch(c->state) {
557 case HTTPSTATE_SEND_HEADER:
558 case RTSPSTATE_SEND_REPLY:
559 case RTSPSTATE_SEND_PACKET:
560 c->poll_entry = poll_entry;
561 poll_entry->fd = fd;
562 poll_entry->events = POLLOUT;
563 poll_entry++;
564 break;
565 case HTTPSTATE_SEND_DATA_HEADER:
566 case HTTPSTATE_SEND_DATA:
567 case HTTPSTATE_SEND_DATA_TRAILER:
568 if (!c->is_packetized) {
569 /* for TCP, we output as much as we can (may need to put a limit) */
570 c->poll_entry = poll_entry;
571 poll_entry->fd = fd;
572 poll_entry->events = POLLOUT;
573 poll_entry++;
574 } else {
575 /* when ffserver is doing the timing, we work by
576 looking at which packet need to be sent every
577 10 ms */
578 delay1 = 10; /* one tick wait XXX: 10 ms assumed */
579 if (delay1 < delay)
580 delay = delay1;
581 }
582 break;
583 case HTTPSTATE_WAIT_REQUEST:
584 case HTTPSTATE_RECEIVE_DATA:
585 case HTTPSTATE_WAIT_FEED:
586 case RTSPSTATE_WAIT_REQUEST:
587 /* need to catch errors */
588 c->poll_entry = poll_entry;
589 poll_entry->fd = fd;
590 poll_entry->events = POLLIN;/* Maybe this will work */
591 poll_entry++;
592 break;
593 default:
594 c->poll_entry = NULL;
595 break;
596 }
597 c = c->next;
598 }
599
600 /* wait for an event on one connection. We poll at least every
601 second to handle timeouts */
602 do {
603 ret = poll(poll_table, poll_entry - poll_table, delay);
604 if (ret < 0 && ff_neterrno() != FF_NETERROR(EAGAIN) &&
605 ff_neterrno() != FF_NETERROR(EINTR))
606 return -1;
607 } while (ret < 0);
608
609 cur_time = av_gettime() / 1000;
610
611 if (need_to_start_children) {
612 need_to_start_children = 0;
613 start_children(first_feed);
614 }
615
616 /* now handle the events */
617 for(c = first_http_ctx; c != NULL; c = c_next) {
618 c_next = c->next;
619 if (handle_connection(c) < 0) {
620 /* close and free the connection */
621 log_connection(c);
622 close_connection(c);
623 }
624 }
625
626 poll_entry = poll_table;
627 /* new HTTP connection request ? */
628 if (poll_entry->revents & POLLIN)
629 new_connection(server_fd, 0);
630 poll_entry++;
631 /* new RTSP connection request ? */
632 if (poll_entry->revents & POLLIN)
633 new_connection(rtsp_server_fd, 1);
634 }
635 }
636
637 /* start waiting for a new HTTP/RTSP request */
638 static void start_wait_request(HTTPContext *c, int is_rtsp)
639 {
640 c->buffer_ptr = c->buffer;
641 c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
642
643 if (is_rtsp) {
644 c->timeout = cur_time + RTSP_REQUEST_TIMEOUT;
645 c->state = RTSPSTATE_WAIT_REQUEST;
646 } else {
647 c->timeout = cur_time + HTTP_REQUEST_TIMEOUT;
648 c->state = HTTPSTATE_WAIT_REQUEST;
649 }
650 }
651
652 static void new_connection(int server_fd, int is_rtsp)
653 {
654 struct sockaddr_in from_addr;
655 int fd, len;
656 HTTPContext *c = NULL;
657
658 len = sizeof(from_addr);
659 fd = accept(server_fd, (struct sockaddr *)&from_addr,
660 &len);
661 if (fd < 0)
662 return;
663 ff_socket_nonblock(fd, 1);
664
665 /* XXX: should output a warning page when coming
666 close to the connection limit */
667 if (nb_connections >= nb_max_connections)
668 goto fail;
669
670 /* add a new connection */
671 c = av_mallocz(sizeof(HTTPContext));
672 if (!c)
673 goto fail;
674
675 c->fd = fd;
676 c->poll_entry = NULL;
677 c->from_addr = from_addr;
678 c->buffer_size = IOBUFFER_INIT_SIZE;
679 c->buffer = av_malloc(c->buffer_size);
680 if (!c->buffer)
681 goto fail;
682
683 c->next = first_http_ctx;
684 first_http_ctx = c;
685 nb_connections++;
686
687 start_wait_request(c, is_rtsp);
688
689 return;
690
691 fail:
692 if (c) {
693 av_free(c->buffer);
694 av_free(c);
695 }
696 closesocket(fd);
697 }
698
699 static void close_connection(HTTPContext *c)
700 {
701 HTTPContext **cp, *c1;
702 int i, nb_streams;
703 AVFormatContext *ctx;
704 URLContext *h;
705 AVStream *st;
706
707 /* remove connection from list */
708 cp = &first_http_ctx;
709 while ((*cp) != NULL) {
710 c1 = *cp;
711 if (c1 == c)
712 *cp = c->next;
713 else
714 cp = &c1->next;
715 }
716
717 /* remove references, if any (XXX: do it faster) */
718 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
719 if (c1->rtsp_c == c)
720 c1->rtsp_c = NULL;
721 }
722
723 /* remove connection associated resources */
724 if (c->fd >= 0)
725 closesocket(c->fd);
726 if (c->fmt_in) {
727 /* close each frame parser */
728 for(i=0;i<c->fmt_in->nb_streams;i++) {
729 st = c->fmt_in->streams[i];
730 if (st->codec->codec)
731 avcodec_close(st->codec);
732 }
733 av_close_input_file(c->fmt_in);
734 }
735
736 /* free RTP output streams if any */
737 nb_streams = 0;
738 if (c->stream)
739 nb_streams = c->stream->nb_streams;
740
741 for(i=0;i<nb_streams;i++) {
742 ctx = c->rtp_ctx[i];
743 if (ctx) {
744 av_write_trailer(ctx);
745 av_free(ctx);
746 }
747 h = c->rtp_handles[i];
748 if (h)
749 url_close(h);
750 }
751
752 ctx = &c->fmt_ctx;
753
754 if (!c->last_packet_sent) {
755 if (ctx->oformat) {
756 /* prepare header */
757 if (url_open_dyn_buf(&ctx->pb) >= 0) {
758 av_write_trailer(ctx);
759 url_close_dyn_buf(ctx->pb, &c->pb_buffer);
760 }
761 }
762 }
763
764 for(i=0; i<ctx->nb_streams; i++)
765 av_free(ctx->streams[i]);
766
767 if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
768 current_bandwidth -= c->stream->bandwidth;
769
770 /* signal that there is no feed if we are the feeder socket */
771 if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
772 c->stream->feed_opened = 0;
773 close(c->feed_fd);
774 }
775
776 av_freep(&c->pb_buffer);
777 av_freep(&c->packet_buffer);
778 av_free(c->buffer);
779 av_free(c);
780 nb_connections--;
781 }
782
783 static int handle_connection(HTTPContext *c)
784 {
785 int len, ret;
786
787 switch(c->state) {
788 case HTTPSTATE_WAIT_REQUEST:
789 case RTSPSTATE_WAIT_REQUEST:
790 /* timeout ? */
791 if ((c->timeout - cur_time) < 0)
792 return -1;
793 if (c->poll_entry->revents & (POLLERR | POLLHUP))
794 return -1;
795
796 /* no need to read if no events */
797 if (!(c->poll_entry->revents & POLLIN))
798 return 0;
799 /* read the data */
800 read_loop:
801 len = recv(c->fd, c->buffer_ptr, 1, 0);
802 if (len < 0) {
803 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
804 ff_neterrno() != FF_NETERROR(EINTR))
805 return -1;
806 } else if (len == 0) {
807 return -1;
808 } else {
809 /* search for end of request. */
810 uint8_t *ptr;
811 c->buffer_ptr += len;
812 ptr = c->buffer_ptr;
813 if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
814 (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
815 /* request found : parse it and reply */
816 if (c->state == HTTPSTATE_WAIT_REQUEST) {
817 ret = http_parse_request(c);
818 } else {
819 ret = rtsp_parse_request(c);
820 }
821 if (ret < 0)
822 return -1;
823 } else if (ptr >= c->buffer_end) {
824 /* request too long: cannot do anything */
825 return -1;
826 } else goto read_loop;
827 }
828 break;
829
830 case HTTPSTATE_SEND_HEADER:
831 if (c->poll_entry->revents & (POLLERR | POLLHUP))
832 return -1;
833
834 /* no need to write if no events */
835 if (!(c->poll_entry->revents & POLLOUT))
836 return 0;
837 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
838 if (len < 0) {
839 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
840 ff_neterrno() != FF_NETERROR(EINTR)) {
841 /* error : close connection */
842 av_freep(&c->pb_buffer);
843 return -1;
844 }
845 } else {
846 c->buffer_ptr += len;
847 if (c->stream)
848 c->stream->bytes_served += len;
849 c->data_count += len;
850 if (c->buffer_ptr >= c->buffer_end) {
851 av_freep(&c->pb_buffer);
852 /* if error, exit */
853 if (c->http_error)
854 return -1;
855 /* all the buffer was sent : synchronize to the incoming stream */
856 c->state = HTTPSTATE_SEND_DATA_HEADER;
857 c->buffer_ptr = c->buffer_end = c->buffer;
858 }
859 }
860 break;
861
862 case HTTPSTATE_SEND_DATA:
863 case HTTPSTATE_SEND_DATA_HEADER:
864 case HTTPSTATE_SEND_DATA_TRAILER:
865 /* for packetized output, we consider we can always write (the
866 input streams sets the speed). It may be better to verify
867 that we do not rely too much on the kernel queues */
868 if (!c->is_packetized) {
869 if (c->poll_entry->revents & (POLLERR | POLLHUP))
870 return -1;
871
872 /* no need to read if no events */
873 if (!(c->poll_entry->revents & POLLOUT))
874 return 0;
875 }
876 if (http_send_data(c) < 0)
877 return -1;
878 /* close connection if trailer sent */
879 if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
880 return -1;
881 break;
882 case HTTPSTATE_RECEIVE_DATA:
883 /* no need to read if no events */
884 if (c->poll_entry->revents & (POLLERR | POLLHUP))
885 return -1;
886 if (!(c->poll_entry->revents & POLLIN))
887 return 0;
888 if (http_receive_data(c) < 0)
889 return -1;
890 break;
891 case HTTPSTATE_WAIT_FEED:
892 /* no need to read if no events */
893 if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
894 return -1;
895
896 /* nothing to do, we'll be waken up by incoming feed packets */
897 break;
898
899 case RTSPSTATE_SEND_REPLY:
900 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
901 av_freep(&c->pb_buffer);
902 return -1;
903 }
904 /* no need to write if no events */
905 if (!(c->poll_entry->revents & POLLOUT))
906 return 0;
907 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
908 if (len < 0) {
909 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
910 ff_neterrno() != FF_NETERROR(EINTR)) {
911 /* error : close connection */
912 av_freep(&c->pb_buffer);
913 return -1;
914 }
915 } else {
916 c->buffer_ptr += len;
917 c->data_count += len;
918 if (c->buffer_ptr >= c->buffer_end) {
919 /* all the buffer was sent : wait for a new request */
920 av_freep(&c->pb_buffer);
921 start_wait_request(c, 1);
922 }
923 }
924 break;
925 case RTSPSTATE_SEND_PACKET:
926 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
927 av_freep(&c->packet_buffer);
928 return -1;
929 }
930 /* no need to write if no events */
931 if (!(c->poll_entry->revents & POLLOUT))
932 return 0;
933 len = send(c->fd, c->packet_buffer_ptr,
934 c->packet_buffer_end - c->packet_buffer_ptr, 0);
935 if (len < 0) {
936 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
937 ff_neterrno() != FF_NETERROR(EINTR)) {
938 /* error : close connection */
939 av_freep(&c->packet_buffer);
940 return -1;
941 }
942 } else {
943 c->packet_buffer_ptr += len;
944 if (c->packet_buffer_ptr >= c->packet_buffer_end) {
945 /* all the buffer was sent : wait for a new request */
946 av_freep(&c->packet_buffer);
947 c->state = RTSPSTATE_WAIT_REQUEST;
948 }
949 }
950 break;
951 case HTTPSTATE_READY:
952 /* nothing to do */
953 break;
954 default:
955 return -1;
956 }
957 return 0;
958 }
959
960 static int extract_rates(char *rates, int ratelen, const char *request)
961 {
962 const char *p;
963
964 for (p = request; *p && *p != '\r' && *p != '\n'; ) {
965 if (strncasecmp(p, "Pragma:", 7) == 0) {
966 const char *q = p + 7;
967
968 while (*q && *q != '\n' && isspace(*q))
969 q++;
970
971 if (strncasecmp(q, "stream-switch-entry=", 20) == 0) {
972 int stream_no;
973 int rate_no;
974
975 q += 20;
976
977 memset(rates, 0xff, ratelen);
978
979 while (1) {
980 while (*q && *q != '\n' && *q != ':')
981 q++;
982
983 if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
984 break;
985
986 stream_no--;
987 if (stream_no < ratelen && stream_no >= 0)
988 rates[stream_no] = rate_no;
989
990 while (*q && *q != '\n' && !isspace(*q))
991 q++;
992 }
993
994 return 1;
995 }
996 }
997 p = strchr(p, '\n');
998 if (!p)
999 break;
1000
1001 p++;
1002 }
1003
1004 return 0;
1005 }
1006
1007 static int find_stream_in_feed(FFStream *feed, AVCodecContext *codec, int bit_rate)
1008 {
1009 int i;
1010 int best_bitrate = 100000000;
1011 int best = -1;
1012
1013 for (i = 0; i < feed->nb_streams; i++) {
1014 AVCodecContext *feed_codec = feed->streams[i]->codec;
1015
1016 if (feed_codec->codec_id != codec->codec_id ||
1017 feed_codec->sample_rate != codec->sample_rate ||
1018 feed_codec->width != codec->width ||
1019 feed_codec->height != codec->height)
1020 continue;
1021
1022 /* Potential stream */
1023
1024 /* We want the fastest stream less than bit_rate, or the slowest
1025 * faster than bit_rate
1026 */
1027
1028 if (feed_codec->bit_rate <= bit_rate) {
1029 if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) {
1030 best_bitrate = feed_codec->bit_rate;
1031 best = i;
1032 }
1033 } else {
1034 if (feed_codec->bit_rate < best_bitrate) {
1035 best_bitrate = feed_codec->bit_rate;
1036 best = i;
1037 }
1038 }
1039 }
1040
1041 return best;
1042 }
1043
1044 static int modify_current_stream(HTTPContext *c, char *rates)
1045 {
1046 int i;
1047 FFStream *req = c->stream;
1048 int action_required = 0;
1049
1050 /* Not much we can do for a feed */
1051 if (!req->feed)
1052 return 0;
1053
1054 for (i = 0; i < req->nb_streams; i++) {
1055 AVCodecContext *codec = req->streams[i]->codec;
1056
1057 switch(rates[i]) {
1058 case 0:
1059 c->switch_feed_streams[i] = req->feed_streams[i];
1060 break;
1061 case 1:
1062 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
1063 break;
1064 case 2:
1065 /* Wants off or slow */
1066 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
1067 #ifdef WANTS_OFF
1068 /* This doesn't work well when it turns off the only stream! */
1069 c->switch_feed_streams[i] = -2;
1070 c->feed_streams[i] = -2;
1071 #endif
1072 break;
1073 }
1074
1075 if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i])
1076 action_required = 1;
1077 }
1078
1079 return action_required;
1080 }
1081
1082
1083 static void do_switch_stream(HTTPContext *c, int i)
1084 {
1085 if (c->switch_feed_streams[i] >= 0) {
1086 #ifdef PHILIP
1087 c->feed_streams[i] = c->switch_feed_streams[i];
1088 #endif
1089
1090 /* Now update the stream */
1091 }
1092 c->switch_feed_streams[i] = -1;
1093 }
1094
1095 /* XXX: factorize in utils.c ? */
1096 /* XXX: take care with different space meaning */
1097 static void skip_spaces(const char **pp)
1098 {
1099 const char *p;
1100 p = *pp;
1101 while (*p == ' ' || *p == '\t')
1102 p++;
1103 *pp = p;
1104 }
1105
1106 static void get_word(char *buf, int buf_size, const char **pp)
1107 {
1108 const char *p;
1109 char *q;
1110
1111 p = *pp;
1112 skip_spaces(&p);
1113 q = buf;
1114 while (!isspace(*p) && *p != '\0') {
1115 if ((q - buf) < buf_size - 1)
1116 *q++ = *p;
1117 p++;
1118 }
1119 if (buf_size > 0)
1120 *q = '\0';
1121 *pp = p;
1122 }
1123
1124 static int validate_acl(FFStream *stream, HTTPContext *c)
1125 {
1126 enum IPAddressAction last_action = IP_DENY;
1127 IPAddressACL *acl;
1128 struct in_addr *src = &c->from_addr.sin_addr;
1129 unsigned long src_addr = src->s_addr;
1130
1131 for (acl = stream->acl; acl; acl = acl->next) {
1132 if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
1133 return (acl->action == IP_ALLOW) ? 1 : 0;
1134 last_action = acl->action;
1135 }
1136
1137 /* Nothing matched, so return not the last action */
1138 return (last_action == IP_DENY) ? 1 : 0;
1139 }
1140
1141 /* compute the real filename of a file by matching it without its
1142 extensions to all the stream filenames */
1143 static void compute_real_filename(char *filename, int max_size)
1144 {
1145 char file1[1024];
1146 char file2[1024];
1147 char *p;
1148 FFStream *stream;
1149
1150 /* compute filename by matching without the file extensions */
1151 av_strlcpy(file1, filename, sizeof(file1));
1152 p = strrchr(file1, '.');
1153 if (p)
1154 *p = '\0';
1155 for(stream = first_stream; stream != NULL; stream = stream->next) {
1156 av_strlcpy(file2, stream->filename, sizeof(file2));
1157 p = strrchr(file2, '.');
1158 if (p)
1159 *p = '\0';
1160 if (!strcmp(file1, file2)) {
1161 av_strlcpy(filename, stream->filename, max_size);
1162 break;
1163 }
1164 }
1165 }
1166
1167 enum RedirType {
1168 REDIR_NONE,
1169 REDIR_ASX,
1170 REDIR_RAM,
1171 REDIR_ASF,
1172 REDIR_RTSP,
1173 REDIR_SDP,
1174 };
1175
1176 /* parse http request and prepare header */
1177 static int http_parse_request(HTTPContext *c)
1178 {
1179 char *p;
1180 enum RedirType redir_type;
1181 char cmd[32];
1182 char info[1024], filename[1024];
1183 char url[1024], *q;
1184 char protocol[32];
1185 char msg[1024];
1186 const char *mime_type;
1187 FFStream *stream;
1188 int i;
1189 char ratebuf[32];
1190 char *useragent = 0;
1191
1192 p = c->buffer;
1193 get_word(cmd, sizeof(cmd), (const char **)&p);
1194 av_strlcpy(c->method, cmd, sizeof(c->method));
1195
1196 if (!strcmp(cmd, "GET"))
1197 c->post = 0;
1198 else if (!strcmp(cmd, "POST"))
1199 c->post = 1;
1200 else
1201 return -1;
1202
1203 get_word(url, sizeof(url), (const char **)&p);
1204 av_strlcpy(c->url, url, sizeof(c->url));
1205
1206 get_word(protocol, sizeof(protocol), (const char **)&p);
1207 if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
1208 return -1;
1209
1210 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
1211
1212 if (ffserver_debug)
1213 http_log("New connection: %s %s\n", cmd, url);
1214
1215 /* find the filename and the optional info string in the request */
1216 p = strchr(url, '?');
1217 if (p) {
1218 av_strlcpy(info, p, sizeof(info));
1219 *p = '\0';
1220 } else
1221 info[0] = '\0';
1222
1223 av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
1224
1225 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1226 if (strncasecmp(p, "User-Agent:", 11) == 0) {
1227 useragent = p + 11;
1228 if (*useragent && *useragent != '\n' && isspace(*useragent))
1229 useragent++;
1230 break;
1231 }
1232 p = strchr(p, '\n');
1233 if (!p)
1234 break;
1235
1236 p++;
1237 }
1238
1239 redir_type = REDIR_NONE;
1240 if (match_ext(filename, "asx")) {
1241 redir_type = REDIR_ASX;
1242 filename[strlen(filename)-1] = 'f';
1243 } else if (match_ext(filename, "asf") &&
1244 (!useragent || strncasecmp(useragent, "NSPlayer", 8) != 0)) {
1245 /* if this isn't WMP or lookalike, return the redirector file */
1246 redir_type = REDIR_ASF;
1247 } else if (match_ext(filename, "rpm,ram")) {
1248 redir_type = REDIR_RAM;
1249 strcpy(filename + strlen(filename)-2, "m");
1250 } else if (match_ext(filename, "rtsp")) {
1251 redir_type = REDIR_RTSP;
1252 compute_real_filename(filename, sizeof(filename) - 1);
1253 } else if (match_ext(filename, "sdp")) {
1254 redir_type = REDIR_SDP;
1255 compute_real_filename(filename, sizeof(filename) - 1);
1256 }
1257
1258 // "redirect" / request to index.html
1259 if (!strlen(filename))
1260 av_strlcpy(filename, "index.html", sizeof(filename) - 1);
1261
1262 stream = first_stream;
1263 while (stream != NULL) {
1264 if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
1265 break;
1266 stream = stream->next;
1267 }
1268 if (stream == NULL) {
1269 snprintf(msg, sizeof(msg), "File '%s' not found", url);
1270 goto send_error;
1271 }
1272
1273 c->stream = stream;
1274 memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
1275 memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
1276
1277 if (stream->stream_type == STREAM_TYPE_REDIRECT) {
1278 c->http_error = 301;
1279 q = c->buffer;
1280 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 301 Moved\r\n");
1281 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Location: %s\r\n", stream->feed_filename);
1282 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: text/html\r\n");
1283 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1284 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<html><head><title>Moved</title></head><body>\r\n");
1285 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "You should be <a href=\"%s\">redirected</a>.\r\n", stream->feed_filename);
1286 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "</body></html>\r\n");
1287
1288 /* prepare output buffer */
1289 c->buffer_ptr = c->buffer;
1290 c->buffer_end = q;
1291 c->state = HTTPSTATE_SEND_HEADER;
1292 return 0;
1293 }
1294
1295 /* If this is WMP, get the rate information */
1296 if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1297 if (modify_current_stream(c, ratebuf)) {
1298 for (i = 0; i < sizeof(c->feed_streams) / sizeof(c->feed_streams[0]); i++) {
1299 if (c->switch_feed_streams[i] >= 0)
1300 do_switch_stream(c, i);
1301 }
1302 }
1303 }
1304
1305 /* If already streaming this feed, do not let start another feeder. */
1306 if (stream->feed_opened) {
1307 snprintf(msg, sizeof(msg), "This feed is already being received.");
1308 goto send_error;
1309 }
1310
1311 if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
1312 current_bandwidth += stream->bandwidth;
1313
1314 if (c->post == 0 && max_bandwidth < current_bandwidth) {
1315 c->http_error = 200;
1316 q = c->buffer;
1317 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 Server too busy\r\n");
1318 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: text/html\r\n");
1319 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1320 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<html><head><title>Too busy</title></head><body>\r\n");
1321 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<p>The server is too busy to serve your request at this time.</p>\r\n");
1322 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<p>The bandwidth being served (including your stream) is %dkbit/sec, and this exceeds the limit of %dkbit/sec.</p>\r\n",
1323 current_bandwidth, max_bandwidth);
1324 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "</body></html>\r\n");
1325
1326 /* prepare output buffer */
1327 c->buffer_ptr = c->buffer;
1328 c->buffer_end = q;
1329 c->state = HTTPSTATE_SEND_HEADER;
1330 return 0;
1331 }
1332
1333 if (redir_type != REDIR_NONE) {
1334 char *hostinfo = 0;
1335
1336 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1337 if (strncasecmp(p, "Host:", 5) == 0) {
1338 hostinfo = p + 5;
1339 break;
1340 }
1341 p = strchr(p, '\n');
1342 if (!p)
1343 break;
1344
1345 p++;
1346 }
1347
1348 if (hostinfo) {
1349 char *eoh;
1350 char hostbuf[260];
1351
1352 while (isspace(*hostinfo))
1353 hostinfo++;
1354
1355 eoh = strchr(hostinfo, '\n');
1356 if (eoh) {
1357 if (eoh[-1] == '\r')
1358 eoh--;
1359
1360 if (eoh - hostinfo < sizeof(hostbuf) - 1) {
1361 memcpy(hostbuf, hostinfo, eoh - hostinfo);
1362 hostbuf[eoh - hostinfo] = 0;
1363
1364 c->http_error = 200;
1365 q = c->buffer;
1366 switch(redir_type) {
1367 case REDIR_ASX:
1368 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 ASX Follows\r\n");
1369 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: video/x-ms-asf\r\n");
1370 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1371 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<ASX Version=\"3\">\r\n");
1372 //q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<!-- Autogenerated by ffserver -->\r\n");
1373 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n",
1374 hostbuf, filename, info);
1375 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "</ASX>\r\n");
1376 break;
1377 case REDIR_RAM:
1378 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 RAM Follows\r\n");
1379 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: audio/x-pn-realaudio\r\n");
1380 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1381 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "# Autogenerated by ffserver\r\n");
1382 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "http://%s/%s%s\r\n",
1383 hostbuf, filename, info);
1384 break;
1385 case REDIR_ASF:
1386 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 ASF Redirect follows\r\n");
1387 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: video/x-ms-asf\r\n");
1388 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1389 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "[Reference]\r\n");
1390 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Ref1=http://%s/%s%s\r\n",
1391 hostbuf, filename, info);
1392 break;
1393 case REDIR_RTSP:
1394 {
1395 char hostname[256], *p;
1396 /* extract only hostname */
1397 av_strlcpy(hostname, hostbuf, sizeof(hostname));
1398 p = strrchr(hostname, ':');
1399 if (p)
1400 *p = '\0';
1401 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 RTSP Redirect follows\r\n");
1402 /* XXX: incorrect mime type ? */
1403 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: application/x-rtsp\r\n");
1404 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1405 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "rtsp://%s:%d/%s\r\n",
1406 hostname, ntohs(my_rtsp_addr.sin_port),
1407 filename);
1408 }
1409 break;
1410 case REDIR_SDP:
1411 {
1412 uint8_t *sdp_data;
1413 int sdp_data_size, len;
1414 struct sockaddr_in my_addr;
1415
1416 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 OK\r\n");
1417 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: application/sdp\r\n");
1418 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1419
1420 len = sizeof(my_addr);
1421 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
1422
1423 /* XXX: should use a dynamic buffer */
1424 sdp_data_size = prepare_sdp_description(stream,
1425 &sdp_data,
1426 my_addr.sin_addr);
1427 if (sdp_data_size > 0) {
1428 memcpy(q, sdp_data, sdp_data_size);
1429 q += sdp_data_size;
1430 *q = '\0';
1431 av_free(sdp_data);
1432 }
1433 }
1434 break;
1435 default:
1436 abort();
1437 break;
1438 }
1439
1440 /* prepare output buffer */
1441 c->buffer_ptr = c->buffer;
1442 c->buffer_end = q;
1443 c->state = HTTPSTATE_SEND_HEADER;
1444 return 0;
1445 }
1446 }
1447 }
1448
1449 snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
1450 goto send_error;
1451 }
1452
1453 stream->conns_served++;
1454
1455 /* XXX: add there authenticate and IP match */
1456
1457 if (c->post) {
1458 /* if post, it means a feed is being sent */
1459 if (!stream->is_feed) {
1460 /* However it might be a status report from WMP! Lets log the data
1461 * as it might come in handy one day
1462 */
1463 char *logline = 0;
1464 int client_id = 0;
1465
1466 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1467 if (strncasecmp(p, "Pragma: log-line=", 17) == 0) {
1468 logline = p;
1469 break;
1470 }
1471 if (strncasecmp(p, "Pragma: client-id=", 18) == 0)
1472 client_id = strtol(p + 18, 0, 10);
1473 p = strchr(p, '\n');
1474 if (!p)
1475 break;
1476
1477 p++;
1478 }
1479
1480 if (logline) {
1481 char *eol = strchr(logline, '\n');
1482
1483 logline += 17;
1484
1485 if (eol) {
1486 if (eol[-1] == '\r')
1487 eol--;
1488 http_log("%.*s\n", (int) (eol - logline), logline);
1489 c->suppress_log = 1;
1490 }
1491 }
1492
1493 #ifdef DEBUG_WMP
1494 http_log("\nGot request:\n%s\n", c->buffer);
1495 #endif
1496
1497 if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1498 HTTPContext *wmpc;
1499
1500 /* Now we have to find the client_id */
1501 for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
1502 if (wmpc->wmp_client_id == client_id)
1503 break;
1504 }
1505
1506 if (wmpc && modify_current_stream(wmpc, ratebuf))
1507 wmpc->switch_pending = 1;
1508 }
1509
1510 snprintf(msg, sizeof(msg), "POST command not handled");
1511 c->stream = 0;
1512 goto send_error;
1513 }
1514 if (http_start_receive_data(c) < 0) {
1515 snprintf(msg, sizeof(msg), "could not open feed");
1516 goto send_error;
1517 }
1518 c->http_error = 0;
1519 c->state = HTTPSTATE_RECEIVE_DATA;
1520 return 0;
1521 }
1522
1523 #ifdef DEBUG_WMP
1524 if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
1525 http_log("\nGot request:\n%s\n", c->buffer);
1526 #endif
1527
1528 if (c->stream->stream_type == STREAM_TYPE_STATUS)
1529 goto send_stats;
1530
1531 /* open input stream */
1532 if (open_input_stream(c, info) < 0) {
1533 snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
1534 goto send_error;
1535 }
1536
1537 /* prepare http header */
1538 q = c->buffer;
1539 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 OK\r\n");
1540 mime_type = c->stream->fmt->mime_type;
1541 if (!mime_type)
1542 mime_type = "application/x-octet-stream";
1543 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Pragma: no-cache\r\n");
1544
1545 /* for asf, we need extra headers */
1546 if (!strcmp(c->stream->fmt->name,"asf_stream")) {
1547 /* Need to allocate a client id */
1548
1549 c->wmp_client_id = av_random(&random_state) & 0x7fffffff;
1550
1551 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Server: Cougar 4.1.0.3923\r\nCache-Control: no-cache\r\nPragma: client-id=%d\r\nPragma: features=\"broadcast\"\r\n", c->wmp_client_id);
1552 }
1553 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-Type: %s\r\n", mime_type);
1554 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1555
1556 /* prepare output buffer */
1557 c->http_error = 0;
1558 c->buffer_ptr = c->buffer;
1559 c->buffer_end = q;
1560 c->state = HTTPSTATE_SEND_HEADER;
1561 return 0;
1562 send_error:
1563 c->http_error = 404;
1564 q = c->buffer;
1565 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 404 Not Found\r\n");
1566 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-type: %s\r\n", "text/html");
1567 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1568 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<HTML>\n");
1569 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<HEAD><TITLE>404 Not Found</TITLE></HEAD>\n");
1570 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "<BODY>%s</BODY>\n", msg);
1571 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "</HTML>\n");
1572
1573 /* prepare output buffer */
1574 c->buffer_ptr = c->buffer;
1575 c->buffer_end = q;
1576 c->state = HTTPSTATE_SEND_HEADER;
1577 return 0;
1578 send_stats:
1579 compute_stats(c);
1580 c->http_error = 200; /* horrible : we use this value to avoid
1581 going to the send data state */
1582 c->state = HTTPSTATE_SEND_HEADER;
1583 return 0;
1584 }
1585
1586 static void fmt_bytecount(ByteIOContext *pb, int64_t count)
1587 {
1588 static const char *suffix = " kMGTP";
1589 const char *s;
1590
1591 for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
1592
1593 url_fprintf(pb, "%"PRId64"%c", count, *s);
1594 }
1595
1596 static void compute_stats(HTTPContext *c)
1597 {
1598 HTTPContext *c1;
1599 FFStream *stream;
1600 char *p;
1601 time_t ti;
1602 int i, len;
1603 ByteIOContext *pb;
1604
1605 if (url_open_dyn_buf(&pb) < 0) {
1606 /* XXX: return an error ? */
1607 c->buffer_ptr = c->buffer;
1608 c->buffer_end = c->buffer;
1609 return;
1610 }
1611
1612 url_fprintf(pb, "HTTP/1.0 200 OK\r\n");
1613 url_fprintf(pb, "Content-type: %s\r\n", "text/html");
1614 url_fprintf(pb, "Pragma: no-cache\r\n");
1615 url_fprintf(pb, "\r\n");
1616
1617 url_fprintf(pb, "<HEAD><TITLE>FFServer Status</TITLE>\n");
1618 if (c->stream->feed_filename)
1619 url_fprintf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename);
1620 url_fprintf(pb, "</HEAD>\n<BODY>");
1621 url_fprintf(pb, "<H1>FFServer Status</H1>\n");
1622 /* format status */
1623 url_fprintf(pb, "<H2>Available Streams</H2>\n");
1624 url_fprintf(pb, "<TABLE cellspacing=0 cellpadding=4>\n");
1625 url_fprintf(pb, "<TR><Th valign=top>Path<th align=left>Served<br>Conns<Th><br>bytes<Th valign=top>Format<Th>Bit rate<br>kbits/s<Th align=left>Video<br>kbits/s<th><br>Codec<Th align=left>Audio<br>kbits/s<th><br>Codec<Th align=left valign=top>Feed\n");
1626 stream = first_stream;
1627 while (stream != NULL) {
1628 char sfilename[1024];
1629 char *eosf;
1630
1631 if (stream->feed != stream) {
1632 av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
1633 eosf = sfilename + strlen(sfilename);
1634 if (eosf - sfilename >= 4) {
1635 if (strcmp(eosf - 4, ".asf") == 0)
1636 strcpy(eosf - 4, ".asx");
1637 else if (strcmp(eosf - 3, ".rm") == 0)
1638 strcpy(eosf - 3, ".ram");
1639 else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
1640 /* generate a sample RTSP director if
1641 unicast. Generate an SDP redirector if
1642 multicast */
1643 eosf = strrchr(sfilename, '.');
1644 if (!eosf)
1645 eosf = sfilename + strlen(sfilename);
1646 if (stream->is_multicast)
1647 strcpy(eosf, ".sdp");
1648 else
1649 strcpy(eosf, ".rtsp");
1650 }
1651 }
1652
1653 url_fprintf(pb, "<TR><TD><A HREF=\"/%s\">%s</A> ",
1654 sfilename, stream->filename);
1655 url_fprintf(pb, "<td align=right> %d <td align=right> ",
1656 stream->conns_served);
1657 fmt_bytecount(pb, stream->bytes_served);
1658 switch(stream->stream_type) {
1659 case STREAM_TYPE_LIVE:
1660 {
1661 int audio_bit_rate = 0;
1662 int video_bit_rate = 0;
1663 const char *audio_codec_name = "";
1664 const char *video_codec_name = "";
1665 const char *audio_codec_name_extra = "";
1666 const char *video_codec_name_extra = "";
1667
1668 for(i=0;i<stream->nb_streams;i++) {
1669 AVStream *st = stream->streams[i];
1670 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
1671 switch(st->codec->codec_type) {
1672 case CODEC_TYPE_AUDIO:
1673 audio_bit_rate += st->codec->bit_rate;
1674 if (codec) {
1675 if (*audio_codec_name)
1676 audio_codec_name_extra = "...";
1677 audio_codec_name = codec->name;
1678 }
1679 break;
1680 case CODEC_TYPE_VIDEO:
1681 video_bit_rate += st->codec->bit_rate;
1682 if (codec) {
1683 if (*video_codec_name)
1684 video_codec_name_extra = "...";
1685 video_codec_name = codec->name;
1686 }
1687 break;
1688 case CODEC_TYPE_DATA:
1689 video_bit_rate += st->codec->bit_rate;
1690 break;
1691 default:
1692 abort();
1693 }
1694 }
1695 url_fprintf(pb, "<TD align=center> %s <TD align=right> %d <TD align=right> %d <TD> %s %s <TD align=right> %d <TD> %s %s",
1696 stream->fmt->name,
1697 stream->bandwidth,
1698 video_bit_rate / 1000, video_codec_name, video_codec_name_extra,
1699 audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra);
1700 if (stream->feed)
1701 url_fprintf(pb, "<TD>%s", stream->feed->filename);
1702 else
1703 url_fprintf(pb, "<TD>%s", stream->feed_filename);
1704 url_fprintf(pb, "\n");
1705 }
1706 break;
1707 default:
1708 url_fprintf(pb, "<TD align=center> - <TD align=right> - <TD align=right> - <td><td align=right> - <TD>\n");
1709 break;
1710 }
1711 }
1712 stream = stream->next;
1713 }
1714 url_fprintf(pb, "</TABLE>\n");
1715
1716 stream = first_stream;
1717 while (stream != NULL) {
1718 if (stream->feed == stream) {
1719 url_fprintf(pb, "<h2>Feed %s</h2>", stream->filename);
1720 if (stream->pid) {
1721 url_fprintf(pb, "Running as pid %d.\n", stream->pid);
1722
1723 #if defined(linux) && !defined(CONFIG_NOCUTILS)
1724 {
1725 FILE *pid_stat;
1726 char ps_cmd[64];
1727
1728 /* This is somewhat linux specific I guess */
1729 snprintf(ps_cmd, sizeof(ps_cmd),
1730 "ps -o \"%%cpu,cputime\" --no-headers %d",
1731 stream->pid);
1732
1733 pid_stat = popen(ps_cmd, "r");
1734 if (pid_stat) {
1735 char cpuperc[10];
1736 char cpuused[64];
1737
1738 if (fscanf(pid_stat, "%10s %64s", cpuperc,
1739 cpuused) == 2) {
1740 url_fprintf(pb, "Currently using %s%% of the cpu. Total time used %s.\n",
1741 cpuperc, cpuused);
1742 }
1743 fclose(pid_stat);
1744 }
1745 }
1746 #endif
1747
1748 url_fprintf(pb, "<p>");
1749 }
1750 url_fprintf(pb, "<table cellspacing=0 cellpadding=4><tr><th>Stream<th>type<th>kbits/s<th align=left>codec<th align=left>Parameters\n");
1751
1752 for (i = 0; i < stream->nb_streams; i++) {
1753 AVStream *st = stream->streams[i];
1754 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
1755 const char *type = "unknown";
1756 char parameters[64];
1757
1758 parameters[0] = 0;
1759
1760 switch(st->codec->codec_type) {
1761 case CODEC_TYPE_AUDIO:
1762 type = "audio";
1763 snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate);
1764 break;
1765 case CODEC_TYPE_VIDEO:
1766 type = "video";
1767 snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height,
1768 st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num);
1769 break;
1770 default:
1771 abort();
1772 }
1773 url_fprintf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n",
1774 i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters);
1775 }
1776 url_fprintf(pb, "</table>\n");
1777
1778 }
1779 stream = stream->next;
1780 }
1781
1782 #if 0
1783 {
1784 float avg;
1785 AVCodecContext *enc;
1786 char buf[1024];
1787
1788 /* feed status */
1789 stream = first_feed;
1790 while (stream != NULL) {
1791 url_fprintf(pb, "<H1>Feed '%s'</H1>\n", stream->filename);
1792 url_fprintf(pb, "<TABLE>\n");
1793 url_fprintf(pb, "<TR><TD>Parameters<TD>Frame count<TD>Size<TD>Avg bitrate (kbits/s)\n");
1794 for(i=0;i<stream->nb_streams;i++) {
1795 AVStream *st = stream->streams[i];
1796 FeedData *fdata = st->priv_data;
1797 enc = st->codec;
1798
1799 avcodec_string(buf, sizeof(buf), enc);
1800 avg = fdata->avg_frame_size * (float)enc->rate * 8.0;
1801 if (enc->codec->type == CODEC_TYPE_AUDIO && enc->frame_size > 0)
1802 avg /= enc->frame_size;
1803 url_fprintf(pb, "<TR><TD>%s <TD> %d <TD> %"PRId64" <TD> %0.1f\n",
1804 buf, enc->frame_number, fdata->data_count, avg / 1000.0);
1805 }
1806 url_fprintf(pb, "</TABLE>\n");
1807 stream = stream->next_feed;
1808 }
1809 }
1810 #endif
1811
1812 /* connection status */
1813 url_fprintf(pb, "<H2>Connection Status</H2>\n");
1814
1815 url_fprintf(pb, "Number of connections: %d / %d<BR>\n",
1816 nb_connections, nb_max_connections);
1817
1818 url_fprintf(pb, "Bandwidth in use: %dk / %dk<BR>\n",
1819 current_bandwidth, max_bandwidth);
1820
1821 url_fprintf(pb, "<TABLE>\n");
1822 url_fprintf(pb, "<TR><th>#<th>File<th>IP<th>Proto<th>State<th>Target bits/sec<th>Actual bits/sec<th>Bytes transferred\n");
1823 c1 = first_http_ctx;
1824 i = 0;
1825 while (c1 != NULL) {
1826 int bitrate;
1827 int j;
1828
1829 bitrate = 0;
1830 if (c1->stream) {
1831 for (j = 0; j < c1->stream->nb_streams; j++) {
1832 if (!c1->stream->feed)
1833 bitrate += c1->stream->streams[j]->codec->bit_rate;
1834 else if (c1->feed_streams[j] >= 0)
1835 bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate;
1836 }
1837 }
1838
1839 i++;
1840 p = inet_ntoa(c1->from_addr.sin_addr);
1841 url_fprintf(pb, "<TR><TD><B>%d</B><TD>%s%s<TD>%s<TD>%s<TD>%s<td align=right>",
1842 i,
1843 c1->stream ? c1->stream->filename : "",
1844 c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
1845 p,
1846 c1->protocol,
1847 http_state[c1->state]);
1848 fmt_bytecount(pb, bitrate);
1849 url_fprintf(pb, "<td align=right>");
1850 fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
1851 url_fprintf(pb, "<td align=right>");
1852 fmt_bytecount(pb, c1->data_count);
1853 url_fprintf(pb, "\n");
1854 c1 = c1->next;
1855 }
1856 url_fprintf(pb, "</TABLE>\n");
1857
1858 /* date */
1859 ti = time(NULL);
1860 p = ctime(&ti);
1861 url_fprintf(pb, "<HR size=1 noshade>Generated at %s", p);
1862 url_fprintf(pb, "</BODY>\n</HTML>\n");
1863
1864 len = url_close_dyn_buf(pb, &c->pb_buffer);
1865 c->buffer_ptr = c->pb_buffer;
1866 c->buffer_end = c->pb_buffer + len;
1867 }
1868
1869 /* check if the parser needs to be opened for stream i */
1870 static void open_parser(AVFormatContext *s, int i)
1871 {
1872 AVStream *st = s->streams[i];
1873 AVCodec *codec;
1874
1875 if (!st->codec->codec) {
1876 codec = avcodec_find_decoder(st->codec->codec_id);
1877 if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
1878 st->codec->parse_only = 1;
1879 if (avcodec_open(st->codec, codec) < 0)
1880 st->codec->parse_only = 0;
1881 }
1882 }
1883 }
1884
1885 static int open_input_stream(HTTPContext *c, const char *info)
1886 {
1887 char buf[128];
1888 char input_filename[1024];
1889 AVFormatContext *s;
1890 int buf_size, i;
1891 int64_t stream_pos;
1892
1893 /* find file name */
1894 if (c->stream->feed) {
1895 strcpy(input_filename, c->stream->feed->feed_filename);
1896 buf_size = FFM_PACKET_SIZE;
1897 /* compute position (absolute time) */
1898 if (find_info_tag(buf, sizeof(buf), "date", info))
1899 {
1900 stream_pos = parse_date(buf, 0);
1901 if (stream_pos == INT64_MIN)
1902 return -1;
1903 }
1904 else if (find_info_tag(buf, sizeof(buf), "buffer", info)) {
1905 int prebuffer = strtol(buf, 0, 10);
1906 stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
1907 } else
1908 stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
1909 } else {
1910 strcpy(input_filename, c->stream->feed_filename);
1911 buf_size = 0;
1912 /* compute position (relative time) */
1913 if (find_info_tag(buf, sizeof(buf), "date", info))
1914 {
1915 stream_pos = parse_date(buf, 1);
1916 if (stream_pos == INT64_MIN)
1917 return -1;
1918 }
1919 else
1920 stream_pos = 0;
1921 }
1922 if (input_filename[0] == '\0')
1923 return -1;
1924
1925 #if 0
1926 { time_t when = stream_pos / 1000000;
1927 http_log("Stream pos = %"PRId64", time=%s", stream_pos, ctime(&when));
1928 }
1929 #endif
1930
1931 /* open stream */
1932 if (av_open_input_file(&s, input_filename, c->stream->ifmt,
1933 buf_size, c->stream->ap_in) < 0) {
1934 http_log("%s not found", input_filename);
1935 return -1;
1936 }
1937 s->flags |= AVFMT_FLAG_GENPTS;
1938 c->fmt_in = s;
1939 av_find_stream_info(c->fmt_in);
1940
1941 /* open each parser */
1942 for(i=0;i<s->nb_streams;i++)
1943 open_parser(s, i);
1944
1945 /* choose stream as clock source (we favorize video stream if
1946 present) for packet sending */
1947 c->pts_stream_index = 0;
1948 for(i=0;i<c->stream->nb_streams;i++) {
1949 if (c->pts_stream_index == 0 &&
1950 c->stream->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO) {
1951 c->pts_stream_index = i;
1952 }
1953 }
1954
1955 #if 1
1956 if (c->fmt_in->iformat->read_seek)
1957 c->fmt_in->iformat->read_seek(c->fmt_in, 0, stream_pos, 0);
1958 #endif
1959 /* set the start time (needed for maxtime and RTP packet timing) */
1960 c->start_time = cur_time;
1961 c->first_pts = AV_NOPTS_VALUE;
1962 return 0;
1963 }
1964
1965 /* return the server clock (in us) */
1966 static int64_t get_server_clock(HTTPContext *c)
1967 {
1968 /* compute current pts value from system time */
1969 return (cur_time - c->start_time) * 1000;
1970 }
1971
1972 /* return the estimated time at which the current packet must be sent
1973 (in us) */
1974 static int64_t get_packet_send_clock(HTTPContext *c)
1975 {
1976 int bytes_left, bytes_sent, frame_bytes;
1977
1978 frame_bytes = c->cur_frame_bytes;
1979 if (frame_bytes <= 0)
1980 return c->cur_pts;
1981 else {
1982 bytes_left = c->buffer_end - c->buffer_ptr;
1983 bytes_sent = frame_bytes - bytes_left;
1984 return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
1985 }
1986 }
1987
1988
1989 static int http_prepare_data(HTTPContext *c)
1990 {
1991 int i, len, ret;
1992 AVFormatContext *ctx;
1993
1994 av_freep(&c->pb_buffer);
1995 switch(c->state) {
1996 case HTTPSTATE_SEND_DATA_HEADER:
1997 memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
1998 av_strlcpy(c->fmt_ctx.author, c->stream->author,
1999 sizeof(c->fmt_ctx.author));
2000 av_strlcpy(c->fmt_ctx.comment, c->stream->comment,
2001 sizeof(c->fmt_ctx.comment));
2002 av_strlcpy(c->fmt_ctx.copyright, c->stream->copyright,
2003 sizeof(c->fmt_ctx.copyright));
2004 av_strlcpy(c->fmt_ctx.title, c->stream->title,
2005 sizeof(c->fmt_ctx.title));
2006
2007 /* open output stream by using specified codecs */
2008 c->fmt_ctx.oformat = c->stream->fmt;
2009 c->fmt_ctx.nb_streams = c->stream->nb_streams;
2010 for(i=0;i<c->fmt_ctx.nb_streams;i++) {
2011 AVStream *st;
2012 AVStream *src;
2013 st = av_mallocz(sizeof(AVStream));
2014 st->codec= avcodec_alloc_context();
2015 c->fmt_ctx.streams[i] = st;
2016 /* if file or feed, then just take streams from FFStream struct */
2017 if (!c->stream->feed ||
2018 c->stream->feed == c->stream)
2019 src = c->stream->streams[i];
2020 else
2021 src = c->stream->feed->streams[c->stream->feed_streams[i]];
2022
2023 *st = *src;
2024 st->priv_data = 0;
2025 st->codec->frame_number = 0; /* XXX: should be done in
2026 AVStream, not in codec */
2027 /* I'm pretty sure that this is not correct...
2028 * However, without it, we crash
2029 */
2030 st->codec->coded_frame = &dummy_frame;
2031 }
2032 c->got_key_frame = 0;
2033
2034 /* prepare header and save header data in a stream */
2035 if (url_open_dyn_buf(&c->fmt_ctx.pb) < 0) {
2036 /* XXX: potential leak */
2037 return -1;
2038 }
2039 c->fmt_ctx.pb->is_streamed = 1;
2040
2041 av_set_parameters(&c->fmt_ctx, NULL);
2042 if (av_write_header(&c->fmt_ctx) < 0)
2043 return -1;
2044
2045 len = url_close_dyn_buf(c->fmt_ctx.pb, &c->pb_buffer);
2046 c->buffer_ptr = c->pb_buffer;
2047 c->buffer_end = c->pb_buffer + len;
2048
2049 c->state = HTTPSTATE_SEND_DATA;
2050 c->last_packet_sent = 0;
2051 break;
2052 case HTTPSTATE_SEND_DATA:
2053 /* find a new packet */
2054 {
2055 AVPacket pkt;
2056
2057 /* read a packet from the input stream */
2058 if (c->stream->feed)
2059 ffm_set_write_index(c->fmt_in,
2060 c->stream->feed->feed_write_index,
2061 c->stream->feed->feed_size);
2062
2063 if (c->stream->max_time &&
2064 c->stream->max_time + c->start_time - cur_time < 0)
2065 /* We have timed out */
2066 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2067 else {
2068 redo:
2069 if (av_read_frame(c->fmt_in, &pkt) < 0) {
2070 if (c->stream->feed && c->stream->feed->feed_opened) {
2071 /* if coming from feed, it means we reached the end of the
2072 ffm file, so must wait for more data */
2073 c->state = HTTPSTATE_WAIT_FEED;
2074 return 1; /* state changed */
2075 } else {
2076 if (c->stream->loop) {
2077 av_close_input_file(c->fmt_in);
2078 c->fmt_in = NULL;
2079 if (open_input_stream(c, "") < 0)
2080 goto no_loop;
2081 goto redo;
2082 } else {
2083 no_loop:
2084 /* must send trailer now because eof or error */
2085 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2086 }
2087 }
2088 } else {
2089 /* update first pts if needed */
2090 if (c->first_pts == AV_NOPTS_VALUE) {
2091 c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q);
2092 c->start_time = cur_time;
2093 }
2094 /* send it to the appropriate stream */
2095 if (c->stream->feed) {
2096 /* if coming from a feed, select the right stream */
2097 if (c->switch_pending) {
2098 c->switch_pending = 0;
2099 for(i=0;i<c->stream->nb_streams;i++) {
2100 if (c->switch_feed_streams[i] == pkt.stream_index)
2101 if (pkt.flags & PKT_FLAG_KEY)
2102 do_switch_stream(c, i);
2103 if (c->switch_feed_streams[i] >= 0)
2104 c->switch_pending = 1;
2105 }
2106 }
2107 for(i=0;i<c->stream->nb_streams;i++) {
2108 if (c->feed_streams[i] == pkt.stream_index) {
2109 pkt.stream_index = i;
2110 if (pkt.flags & PKT_FLAG_KEY)
2111 c->got_key_frame |= 1 << i;
2112 /* See if we have all the key frames, then
2113 * we start to send. This logic is not quite
2114 * right, but it works for the case of a
2115 * single video stream with one or more
2116 * audio streams (for which every frame is
2117 * typically a key frame).
2118 */
2119 if (!c->stream->send_on_key ||
2120 ((c->got_key_frame + 1) >> c->stream->nb_streams))
2121 goto send_it;
2122 }
2123 }
2124 } else {
2125 AVCodecContext *codec;
2126
2127 send_it:
2128 /* specific handling for RTP: we use several
2129 output stream (one for each RTP
2130 connection). XXX: need more abstract handling */
2131 if (c->is_packetized) {
2132 AVStream *st;
2133 /* compute send time and duration */
2134 st = c->fmt_in->streams[pkt.stream_index];
2135 c->cur_pts = av_rescale_q(pkt.dts, st->time_base, AV_TIME_BASE_Q);
2136 if (st->start_time != AV_NOPTS_VALUE)
2137 c->cur_pts -= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2138 c->cur_frame_duration = av_rescale_q(pkt.duration, st->time_base, AV_TIME_BASE_Q);
2139 #if 0
2140 printf("index=%d pts=%0.3f duration=%0.6f\n",
2141 pkt.stream_index,
2142 (double)c->cur_pts /
2143 AV_TIME_BASE,
2144 (double)c->cur_frame_duration /
2145 AV_TIME_BASE);
2146 #endif
2147 /* find RTP context */
2148 c->packet_stream_index = pkt.stream_index;
2149 ctx = c->rtp_ctx[c->packet_stream_index];
2150 if(!ctx) {
2151 av_free_packet(&pkt);
2152 break;
2153 }
2154 codec = ctx->streams[0]->codec;
2155 /* only one stream per RTP connection */
2156 pkt.stream_index = 0;
2157 } else {
2158 ctx = &c->fmt_ctx;
2159 /* Fudge here */
2160 codec = ctx->streams[pkt.stream_index]->codec;
2161 }
2162
2163 codec->coded_frame->key_frame = ((pkt.flags & PKT_FLAG_KEY) != 0);
2164 if (c->is_packetized) {
2165 int max_packet_size;
2166 if (c->rtp_protocol == RTSP_PROTOCOL_RTP_TCP)
2167 max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
2168 else
2169 max_packet_size = url_get_max_packet_size(c->rtp_handles[c->packet_stream_index]);
2170 ret = url_open_dyn_packet_buf(&ctx->pb, max_packet_size);
2171 } else {
2172 ret = url_open_dyn_buf(&ctx->pb);
2173 }
2174 if (ret < 0) {
2175 /* XXX: potential leak */
2176 return -1;
2177 }
2178 if (pkt.dts != AV_NOPTS_VALUE)
2179 pkt.dts = av_rescale_q(pkt.dts,
2180 c->fmt_in->streams[pkt.stream_index]->time_base,
2181 ctx->streams[pkt.stream_index]->time_base);
2182 if (pkt.pts != AV_NOPTS_VALUE)
2183 pkt.pts = av_rescale_q(pkt.pts,
2184 c->fmt_in->streams[pkt.stream_index]->time_base,
2185 ctx->streams[pkt.stream_index]->time_base);
2186 if (av_write_frame(ctx, &pkt))
2187 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2188
2189 len = url_close_dyn_buf(ctx->pb, &c->pb_buffer);
2190 c->cur_frame_bytes = len;
2191 c->buffer_ptr = c->pb_buffer;
2192 c->buffer_end = c->pb_buffer + len;
2193
2194 codec->frame_number++;
2195 if (len == 0) {
2196 av_free_packet(&pkt);
2197 goto redo;
2198 }
2199 }
2200 av_free_packet(&pkt);
2201 }
2202 }
2203 }
2204 break;
2205 default:
2206 case HTTPSTATE_SEND_DATA_TRAILER:
2207 /* last packet test ? */
2208 if (c->last_packet_sent || c->is_packetized)
2209 return -1;
2210 ctx = &c->fmt_ctx;
2211 /* prepare header */
2212 if (url_open_dyn_buf(&ctx->pb) < 0) {
2213 /* XXX: potential leak */
2214 return -1;
2215 }
2216 av_write_trailer(ctx);
2217 len = url_close_dyn_buf(ctx->pb, &c->pb_buffer);
2218 c->buffer_ptr = c->pb_buffer;
2219 c->buffer_end = c->pb_buffer + len;
2220
2221 c->last_packet_sent = 1;
2222 break;
2223 }
2224 return 0;
2225 }
2226
2227 /* should convert the format at the same time */
2228 /* send data starting at c->buffer_ptr to the output connection
2229 (either UDP or TCP connection) */
2230 static int http_send_data(HTTPContext *c)
2231 {
2232 int len, ret;
2233
2234 for(;;) {
2235 if (c->buffer_ptr >= c->buffer_end) {
2236 ret = http_prepare_data(c);
2237 if (ret < 0)
2238 return -1;
2239 else if (ret != 0)
2240 /* state change requested */
2241 break;
2242 } else {
2243 if (c->is_packetized) {
2244 /* RTP data output */
2245 len = c->buffer_end - c->buffer_ptr;
2246 if (len < 4) {
2247 /* fail safe - should never happen */
2248 fail1:
2249 c->buffer_ptr = c->buffer_end;
2250 return 0;
2251 }
2252 len = (c->buffer_ptr[0] << 24) |
2253 (c->buffer_ptr[1] << 16) |
2254 (c->buffer_ptr[2] << 8) |
2255 (c->buffer_ptr[3]);
2256 if (len > (c->buffer_end - c->buffer_ptr))
2257 goto fail1;
2258 if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) {
2259 /* nothing to send yet: we can wait */
2260 return 0;
2261 }
2262
2263 c->data_count += len;
2264 update_datarate(&c->datarate, c->data_count);
2265 if (c->stream)
2266 c->stream->bytes_served += len;
2267
2268 if (c->rtp_protocol == RTSP_PROTOCOL_RTP_TCP) {
2269 /* RTP packets are sent inside the RTSP TCP connection */
2270 ByteIOContext *pb;
2271 int interleaved_index, size;
2272 uint8_t header[4];
2273 HTTPContext *rtsp_c;
2274
2275 rtsp_c = c->rtsp_c;
2276 /* if no RTSP connection left, error */
2277 if (!rtsp_c)
2278 return -1;
2279 /* if already sending something, then wait. */
2280 if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST)
2281 break;
2282 if (url_open_dyn_buf(&pb) < 0)
2283 goto fail1;
2284 interleaved_index = c->packet_stream_index * 2;
2285 /* RTCP packets are sent at odd indexes */
2286 if (c->buffer_ptr[1] == 200)
2287 interleaved_index++;
2288 /* write RTSP TCP header */
2289 header[0] = '$';
2290 header[1] = interleaved_index;
2291 header[2] = len >> 8;
2292 header[3] = len;
2293 put_buffer(pb, header, 4);
2294 /* write RTP packet data */
2295 c->buffer_ptr += 4;
2296 put_buffer(pb, c->buffer_ptr, len);
2297 size = url_close_dyn_buf(pb, &c->packet_buffer);
2298 /* prepare asynchronous TCP sending */
2299 rtsp_c->packet_buffer_ptr = c->packet_buffer;
2300 rtsp_c->packet_buffer_end = c->packet_buffer + size;
2301 c->buffer_ptr += len;
2302
2303 /* send everything we can NOW */
2304 len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr,
2305 rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0);
2306 if (len > 0)
2307 rtsp_c->packet_buffer_ptr += len;
2308 if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) {
2309 /* if we could not send all the data, we will
2310 send it later, so a new state is needed to
2311 "lock" the RTSP TCP connection */
2312 rtsp_c->state = RTSPSTATE_SEND_PACKET;
2313 break;
2314 } else
2315 /* all data has been sent */
2316 av_freep(&c->packet_buffer);
2317 } else {
2318 /* send RTP packet directly in UDP */
2319 c->buffer_ptr += 4;
2320 url_write(c->rtp_handles[c->packet_stream_index],
2321 c->buffer_ptr, len);
2322 c->buffer_ptr += len;
2323 /* here we continue as we can send several packets per 10 ms slot */
2324 }
2325 } else {
2326 /* TCP data output */
2327 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
2328 if (len < 0) {
2329 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2330 ff_neterrno() != FF_NETERROR(EINTR))
2331 /* error : close connection */
2332 return -1;
2333 else
2334 return 0;
2335 } else
2336 c->buffer_ptr += len;
2337
2338 c->data_count += len;
2339 update_datarate(&c->datarate, c->data_count);
2340 if (c->stream)
2341 c->stream->bytes_served += len;
2342 break;
2343 }
2344 }
2345 } /* for(;;) */
2346 return 0;
2347 }
2348
2349 static int http_start_receive_data(HTTPContext *c)
2350 {
2351 int fd;
2352
2353 if (c->stream->feed_opened)
2354 return -1;
2355
2356 /* Don't permit writing to this one */
2357 if (c->stream->readonly)
2358 return -1;
2359
2360 /* open feed */
2361 fd = open(c->stream->feed_filename, O_RDWR);
2362 if (fd < 0)
2363 return -1;
2364 c->feed_fd = fd;
2365
2366 c->stream->feed_write_index = ffm_read_write_index(fd);
2367 c->stream->feed_size = lseek(fd, 0, SEEK_END);
2368 lseek(fd, 0, SEEK_SET);
2369
2370 /* init buffer input */
2371 c->buffer_ptr = c->buffer;
2372 c->buffer_end = c->buffer + FFM_PACKET_SIZE;
2373 c->stream->feed_opened = 1;
2374 return 0;
2375 }
2376
2377 static int http_receive_data(HTTPContext *c)
2378 {
2379 HTTPContext *c1;
2380
2381 if (c->buffer_end > c->buffer_ptr) {
2382 int len;
2383
2384 len = recv(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
2385 if (len < 0) {
2386 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2387 ff_neterrno() != FF_NETERROR(EINTR))
2388 /* error : close connection */
2389 goto fail;
2390 } else if (len == 0)
2391 /* end of connection : close it */
2392 goto fail;
2393 else {
2394 c->buffer_ptr += len;
2395 c->data_count += len;
2396 update_datarate(&c->datarate, c->data_count);
2397 }
2398 }
2399
2400 if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) {
2401 if (c->buffer[0] != 'f' ||
2402 c->buffer[1] != 'm') {
2403 http_log("Feed stream has become desynchronized -- disconnecting\n");
2404 goto fail;
2405 }
2406 }
2407
2408 if (c->buffer_ptr >= c->buffer_end) {
2409 FFStream *feed = c->stream;
2410 /* a packet has been received : write it in the store, except
2411 if header */
2412 if (c->data_count > FFM_PACKET_SIZE) {
2413
2414 // printf("writing pos=0x%"PRIx64" size=0x%"PRIx64"\n", feed->feed_write_index, feed->feed_size);
2415 /* XXX: use llseek or url_seek */
2416 lseek(c->feed_fd, feed->feed_write_index, SEEK_SET);
2417 write(c->feed_fd, c->buffer, FFM_PACKET_SIZE);
2418
2419 feed->feed_write_index += FFM_PACKET_SIZE;
2420 /* update file size */
2421 if (feed->feed_write_index > c->stream->feed_size)
2422 feed->feed_size = feed->feed_write_index;
2423
2424 /* handle wrap around if max file size reached */
2425 if (c->stream->feed_max_size && feed->feed_write_index >= c->stream->feed_max_size)
2426 feed->feed_write_index = FFM_PACKET_SIZE;
2427
2428 /* write index */
2429 ffm_write_write_index(c->feed_fd, feed->feed_write_index);
2430
2431 /* wake up any waiting connections */
2432 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2433 if (c1->state == HTTPSTATE_WAIT_FEED &&
2434 c1->stream->feed == c->stream->feed)
2435 c1->state = HTTPSTATE_SEND_DATA;
2436 }
2437 } else {
2438 /* We have a header in our hands that contains useful data */
2439 AVFormatContext s;
2440 AVInputFormat *fmt_in;
2441 int i;
2442
2443 memset(&s, 0, sizeof(s));
2444
2445 url_open_buf(&s.pb, c->buffer, c->buffer_end - c->buffer, URL_RDONLY);
2446 s.pb->is_streamed = 1;
2447
2448 /* use feed output format name to find corresponding input format */
2449 fmt_in = av_find_input_format(feed->fmt->name);
2450 if (!fmt_in)
2451 goto fail;
2452
2453 if (fmt_in->priv_data_size > 0) {
2454 s.priv_data = av_mallocz(fmt_in->priv_data_size);
2455 if (!s.priv_data)
2456 goto fail;
2457 } else
2458 s.priv_data = NULL;
2459
2460 if (fmt_in->read_header(&s, 0) < 0) {
2461 av_freep(&s.priv_data);
2462 goto fail;
2463 }
2464
2465 /* Now we have the actual streams */
2466 if (s.nb_streams != feed->nb_streams) {
2467 av_freep(&s.priv_data);
2468 goto fail;
2469 }
2470 for (i = 0; i < s.nb_streams; i++)
2471 memcpy(feed->streams[i]->codec,
2472 s.streams[i]->codec, sizeof(AVCodecContext));
2473 av_freep(&s.priv_data);
2474 }
2475 c->buffer_ptr = c->buffer;
2476 }
2477
2478 return 0;
2479 fail:
2480 c->stream->feed_opened = 0;
2481 close(c->feed_fd);
2482 return -1;
2483 }
2484
2485 /********************************************************************/
2486 /* RTSP handling */
2487
2488 static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number)
2489 {
2490 const char *str;
2491 time_t ti;
2492 char *p;
2493 char buf2[32];
2494
2495 switch(error_number) {
2496 case RTSP_STATUS_OK:
2497 str = "OK";
2498 break;
2499 case RTSP_STATUS_METHOD:
2500 str = "Method Not Allowed";
2501 break;
2502 case RTSP_STATUS_BANDWIDTH:
2503 str = "Not Enough Bandwidth";
2504 break;
2505 case RTSP_STATUS_SESSION:
2506 str = "Session Not Found";
2507 break;
2508 case RTSP_STATUS_STATE:
2509 str = "Method Not Valid in This State";
2510 break;
2511 case RTSP_STATUS_AGGREGATE:
2512 str = "Aggregate operation not allowed";
2513 break;
2514 case RTSP_STATUS_ONLY_AGGREGATE:
2515 str = "Only aggregate operation allowed";
2516 break;
2517 case RTSP_STATUS_TRANSPORT:
2518 str = "Unsupported transport";
2519 break;
2520 case RTSP_STATUS_INTERNAL:
2521 str = "Internal Server Error";
2522 break;
2523 case RTSP_STATUS_SERVICE:
2524 str = "Service Unavailable";
2525 break;
2526 case RTSP_STATUS_VERSION:
2527 str = "RTSP Version not supported";
2528 break;
2529 default:
2530 str = "Unknown Error";
2531 break;
2532 }
2533
2534 url_fprintf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str);
2535 url_fprintf(c->pb, "CSeq: %d\r\n", c->seq);
2536
2537 /* output GMT time */
2538 ti = time(NULL);
2539 p = ctime(&ti);
2540 strcpy(buf2, p);
2541 p = buf2 + strlen(p) - 1;
2542 if (*p == '\n')
2543 *p = '\0';
2544 url_fprintf(c->pb, "Date: %s GMT\r\n", buf2);
2545 }
2546
2547 static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number)
2548 {
2549 rtsp_reply_header(c, error_number);
2550 url_fprintf(c->pb, "\r\n");
2551 }
2552
2553 static int rtsp_parse_request(HTTPContext *c)
2554 {
2555 const char *p, *p1, *p2;
2556 char cmd[32];
2557 char url[1024];
2558 char protocol[32];
2559 char line[1024];
2560 int len;
2561 RTSPHeader header1, *header = &header1;
2562
2563 c->buffer_ptr[0] = '\0';
2564 p = c->buffer;
2565
2566 get_word(cmd, sizeof(cmd), &p);
2567 get_word(url, sizeof(url), &p);
2568 get_word(protocol, sizeof(protocol), &p);
2569
2570 av_strlcpy(c->method, cmd, sizeof(c->method));
2571 av_strlcpy(c->url, url, sizeof(c->url));
2572 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
2573
2574 if (url_open_dyn_buf(&c->pb) < 0) {
2575 /* XXX: cannot do more */
2576 c->pb = NULL; /* safety */
2577 return -1;
2578 }
2579
2580 /* check version name */
2581 if (strcmp(protocol, "RTSP/1.0") != 0) {
2582 rtsp_reply_error(c, RTSP_STATUS_VERSION);
2583 goto the_end;
2584 }
2585
2586 /* parse each header line */
2587 memset(header, 0, sizeof(RTSPHeader));
2588 /* skip to next line */
2589 while (*p != '\n' && *p != '\0')
2590 p++;
2591 if (*p == '\n')
2592 p++;
2593 while (*p != '\0') {
2594 p1 = strchr(p, '\n');
2595 if (!p1)
2596 break;
2597 p2 = p1;
2598 if (p2 > p && p2[-1] == '\r')
2599 p2--;
2600 /* skip empty line */
2601 if (p2 == p)
2602 break;
2603 len = p2 - p;
2604 if (len > sizeof(line) - 1)
2605 len = sizeof(line) - 1;
2606 memcpy(line, p, len);
2607 line[len] = '\0';
2608 rtsp_parse_line(header, line);
2609 p = p1 + 1;
2610 }
2611
2612 /* handle sequence number */
2613 c->seq = header->seq;
2614
2615 if (!strcmp(cmd, "DESCRIBE"))
2616 rtsp_cmd_describe(c, url);
2617 else if (!strcmp(cmd, "OPTIONS"))
2618 rtsp_cmd_options(c, url);
2619 else if (!strcmp(cmd, "SETUP"))
2620 rtsp_cmd_setup(c, url, header);
2621 else if (!strcmp(cmd, "PLAY"))
2622 rtsp_cmd_play(c, url, header);
2623 else if (!strcmp(cmd, "PAUSE"))
2624 rtsp_cmd_pause(c, url, header);
2625 else if (!strcmp(cmd, "TEARDOWN"))
2626 rtsp_cmd_teardown(c, url, header);
2627 else
2628 rtsp_reply_error(c, RTSP_STATUS_METHOD);
2629
2630 the_end:
2631 len = url_close_dyn_buf(c->pb, &c->pb_buffer);
2632 c->pb = NULL; /* safety */
2633 if (len < 0) {
2634 /* XXX: cannot do more */
2635 return -1;
2636 }
2637 c->buffer_ptr = c->pb_buffer;
2638 c->buffer_end = c->pb_buffer + len;
2639 c->state = RTSPSTATE_SEND_REPLY;
2640 return 0;
2641 }
2642
2643 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
2644 struct in_addr my_ip)
2645 {
2646 AVFormatContext *avc;
2647 AVStream avs[MAX_STREAMS];
2648 int i;
2649
2650 avc = av_alloc_format_context();
2651 if (avc == NULL) {
2652 return -1;
2653 }
2654 if (stream->title[0] != 0) {
2655 av_strlcpy(avc->title, stream->title, sizeof(avc->title));
2656 } else {
2657 av_strlcpy(avc->title, "No Title", sizeof(avc->title));
2658 }
2659 avc->nb_streams = stream->nb_streams;
2660 if (stream->is_multicast) {
2661 snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d",
2662 inet_ntoa(stream->multicast_ip),
2663 stream->multicast_port, stream->multicast_ttl);
2664 }
2665
2666 for(i = 0; i < stream->nb_streams; i++) {
2667 avc->streams[i] = &avs[i];
2668 avc->streams[i]->codec = stream->streams[i]->codec;
2669 }
2670 *pbuffer = av_mallocz(2048);
2671 avf_sdp_create(&avc, 1, *pbuffer, 2048);
2672 av_free(avc);
2673
2674 return strlen(*pbuffer);
2675 }
2676
2677 static void rtsp_cmd_options(HTTPContext *c, const char *url)
2678 {
2679 // rtsp_reply_header(c, RTSP_STATUS_OK);
2680 url_fprintf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK");
2681 url_fprintf(c->pb, "CSeq: %d\r\n", c->seq);
2682 url_fprintf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
2683 url_fprintf(c->pb, "\r\n");
2684 }
2685
2686 static void rtsp_cmd_describe(HTTPContext *c, const char *url)
2687 {
2688 FFStream *stream;
2689 char path1[1024];
2690 const char *path;
2691 uint8_t *content;
2692 int content_length, len;
2693 struct sockaddr_in my_addr;
2694
2695 /* find which url is asked */
2696 url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2697 path = path1;
2698 if (*path == '/')
2699 path++;
2700
2701 for(stream = first_stream; stream != NULL; stream = stream->next) {
2702 if (!stream->is_feed &&
2703 stream->fmt && !strcmp(stream->fmt->name, "rtp") &&
2704 !strcmp(path, stream->filename)) {
2705 goto found;
2706 }
2707 }
2708 /* no stream found */
2709 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
2710 return;
2711
2712 found:
2713 /* prepare the media description in sdp format */
2714
2715 /* get the host IP */
2716 len = sizeof(my_addr);
2717 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
2718 content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr);
2719 if (content_length < 0) {
2720 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
2721 return;
2722 }
2723 rtsp_reply_header(c, RTSP_STATUS_OK);
2724 url_fprintf(c->pb, "Content-Type: application/sdp\r\n");
2725 url_fprintf(c->pb, "Content-Length: %d\r\n", content_length);
2726 url_fprintf(c->pb, "\r\n");
2727 put_buffer(c->pb, content, content_length);
2728 }
2729
2730 static HTTPContext *find_rtp_session(const char *session_id)
2731 {
2732 HTTPContext *c;
2733
2734 if (session_id[0] == '\0')
2735 return NULL;
2736
2737 for(c = first_http_ctx; c != NULL; c = c->next) {
2738 if (!strcmp(c->session_id, session_id))
2739 return c;
2740 }
2741 return NULL;
2742 }
2743
2744 static RTSPTransportField *find_transport(RTSPHeader *h, enum RTSPProtocol protocol)
2745 {
2746 RTSPTransportField *th;
2747 int i;
2748
2749 for(i=0;i<h->nb_transports;i++) {
2750 th = &h->transports[i];
2751 if (th->protocol == protocol)
2752 return th;
2753 }
2754 return NULL;
2755 }
2756
2757 static void rtsp_cmd_setup(HTTPContext *c, const char *url,
2758 RTSPHeader *h)
2759 {
2760 FFStream *stream;
2761 int stream_index, port;
2762 char buf[1024];
2763 char path1[1024];
2764 const char *path;
2765 HTTPContext *rtp_c;
2766 RTSPTransportField *th;
2767 struct sockaddr_in dest_addr;
2768 RTSPActionServerSetup setup;
2769
2770 /* find which url is asked */
2771 url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2772 path = path1;
2773 if (*path == '/')
2774 path++;
2775
2776 /* now check each stream */
2777 for(stream = first_stream; stream != NULL; stream = stream->next) {
2778 if (!stream->is_feed &&
2779 stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
2780 /* accept aggregate filenames only if single stream */
2781 if (!strcmp(path, stream->filename)) {
2782 if (stream->nb_streams != 1) {
2783 rtsp_reply_error(c, RTSP_STATUS_AGGREGATE);
2784 return;
2785 }
2786 stream_index = 0;
2787 goto found;
2788 }
2789
2790 for(stream_index = 0; stream_index < stream->nb_streams;
2791 stream_index++) {
2792 snprintf(buf, sizeof(buf), "%s/streamid=%d",
2793 stream->filename, stream_index);
2794 if (!strcmp(path, buf))
2795 goto found;
2796 }
2797 }
2798 }
2799 /* no stream found */
2800 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
2801 return;
2802 found:
2803
2804 /* generate session id if needed */
2805 if (h->session_id[0] == '\0')
2806 snprintf(h->session_id, sizeof(h->session_id), "%08x%08x",
2807 av_random(&random_state), av_random(&random_state));
2808
2809 /* find rtp session, and create it if none found */
2810 rtp_c = find_rtp_session(h->session_id);
2811 if (!rtp_c) {
2812 /* always prefer UDP */
2813 th = find_transport(h, RTSP_PROTOCOL_RTP_UDP);
2814 if (!th) {
2815 th = find_transport(h, RTSP_PROTOCOL_RTP_TCP);
2816 if (!th) {
2817 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
2818 return;
2819 }
2820 }
2821
2822 rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id,
2823 th->protocol);
2824 if (!rtp_c) {
2825 rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH);
2826 return;
2827 }
2828
2829 /* open input stream */
2830 if (open_input_stream(rtp_c, "") < 0) {
2831 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
2832 return;
2833 }
2834 }
2835
2836 /* test if stream is OK (test needed because several SETUP needs
2837 to be done for a given file) */
2838 if (rtp_c->stream != stream) {
2839 rtsp_reply_error(c, RTSP_STATUS_SERVICE);
2840 return;
2841 }
2842
2843 /* test if stream is already set up */
2844 if (rtp_c->rtp_ctx[stream_index]) {
2845 rtsp_reply_error(c, RTSP_STATUS_STATE);
2846 return;
2847 }
2848
2849 /* check transport */
2850 th = find_transport(h, rtp_c->rtp_protocol);
2851 if (!th || (th->protocol == RTSP_PROTOCOL_RTP_UDP &&
2852 th->client_port_min <= 0)) {
2853 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
2854 return;
2855 }
2856
2857 /* setup default options */
2858 setup.transport_option[0] = '\0';
2859 dest_addr = rtp_c->from_addr;
2860 dest_addr.sin_port = htons(th->client_port_min);
2861
2862 /* setup stream */
2863 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) {
2864 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
2865 return;
2866 }
2867
2868 /* now everything is OK, so we can send the connection parameters */
2869 rtsp_reply_header(c, RTSP_STATUS_OK);
2870 /* session ID */
2871 url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
2872
2873 switch(rtp_c->rtp_protocol) {
2874 case RTSP_PROTOCOL_RTP_UDP:
2875 port = rtp_get_local_port(rtp_c->rtp_handles[stream_index]);
2876 url_fprintf(c->pb, "Transport: RTP/AVP/UDP;unicast;"
2877 "client_port=%d-%d;server_port=%d-%d",
2878 th->client_port_min, th->client_port_min + 1,
2879 port, port + 1);
2880 break;
2881 case RTSP_PROTOCOL_RTP_TCP:
2882 url_fprintf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d",
2883 stream_index * 2, stream_index * 2 + 1);
2884 break;
2885 default:
2886 break;
2887 }
2888 if (setup.transport_option[0] != '\0')
2889 url_fprintf(c->pb, ";%s", setup.transport_option);
2890 url_fprintf(c->pb, "\r\n");
2891
2892
2893 url_fprintf(c->pb, "\r\n");
2894 }
2895
2896
2897 /* find an rtp connection by using the session ID. Check consistency
2898 with filename */
2899 static HTTPContext *find_rtp_session_with_url(const char *url,
2900 const char *session_id)
2901 {
2902 HTTPContext *rtp_c;
2903 char path1[1024];
2904 const char *path;
2905 char buf[1024];
2906 int s;
2907
2908 rtp_c = find_rtp_session(session_id);
2909 if (!rtp_c)
2910 return NULL;
2911
2912 /* find which url is asked */
2913 url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2914 path = path1;
2915 if (*path == '/')
2916 path++;
2917 if(!strcmp(path, rtp_c->stream->filename)) return rtp_c;
2918 for(s=0; s<rtp_c->stream->nb_streams; ++s) {
2919 snprintf(buf, sizeof(buf), "%s/streamid=%d",
2920 rtp_c->stream->filename, s);
2921 if(!strncmp(path, buf, sizeof(buf))) {
2922 // XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1?
2923 return rtp_c;
2924 }
2925 }
2926 return NULL;
2927 }
2928
2929 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPHeader *h)
2930 {
2931 HTTPContext *rtp_c;
2932
2933 rtp_c = find_rtp_session_with_url(url, h->session_id);
2934 if (!rtp_c) {
2935 rtsp_reply_error(c, RTSP_STATUS_SESSION);
2936 return;
2937 }
2938
2939 if (rtp_c->state != HTTPSTATE_SEND_DATA &&
2940 rtp_c->state != HTTPSTATE_WAIT_FEED &&
2941 rtp_c->state != HTTPSTATE_READY) {
2942 rtsp_reply_error(c, RTSP_STATUS_STATE);
2943 return;
2944 }
2945
2946 #if 0
2947 /* XXX: seek in stream */
2948 if (h->range_start != AV_NOPTS_VALUE) {
2949 printf("range_start=%0.3f\n", (double)h->range_start / AV_TIME_BASE);
2950 av_seek_frame(rtp_c->fmt_in, -1, h->range_start);
2951 }
2952 #endif
2953
2954 rtp_c->state = HTTPSTATE_SEND_DATA;
2955
2956 /* now everything is OK, so we can send the connection parameters */
2957 rtsp_reply_header(c, RTSP_STATUS_OK);
2958 /* session ID */
2959 url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
2960 url_fprintf(c->pb, "\r\n");
2961 }
2962
2963 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPHeader *h)
2964 {
2965 HTTPContext *rtp_c;
2966
2967 rtp_c = find_rtp_session_with_url(url, h->session_id);
2968 if (!rtp_c) {
2969 rtsp_reply_error(c, RTSP_STATUS_SESSION);
2970 return;
2971 }
2972
2973 if (rtp_c->state != HTTPSTATE_SEND_DATA &&
2974 rtp_c->state != HTTPSTATE_WAIT_FEED) {
2975 rtsp_reply_error(c, RTSP_STATUS_STATE);
2976 return;
2977 }
2978
2979 rtp_c->state = HTTPSTATE_READY;
2980 rtp_c->first_pts = AV_NOPTS_VALUE;
2981 /* now everything is OK, so we can send the connection parameters */
2982 rtsp_reply_header(c, RTSP_STATUS_OK);
2983 /* session ID */
2984 url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
2985 url_fprintf(c->pb, "\r\n");
2986 }
2987
2988 static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPHeader *h)
2989 {
2990 HTTPContext *rtp_c;
2991 char session_id[32];
2992
2993 rtp_c = find_rtp_session_with_url(url, h->session_id);
2994 if (!rtp_c) {
2995 rtsp_reply_error(c, RTSP_STATUS_SESSION);
2996 return;
2997 }
2998
2999 av_strlcpy(session_id, rtp_c->session_id, sizeof(session_id));
3000
3001 /* abort the session */
3002 close_connection(rtp_c);
3003
3004 /* now everything is OK, so we can send the connection parameters */
3005 rtsp_reply_header(c, RTSP_STATUS_OK);
3006 /* session ID */
3007 url_fprintf(c->pb, "Session: %s\r\n", session_id);
3008 url_fprintf(c->pb, "\r\n");
3009 }
3010
3011
3012 /********************************************************************/
3013 /* RTP handling */
3014
3015 static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
3016 FFStream *stream, const char *session_id,
3017 enum RTSPProtocol rtp_protocol)
3018 {
3019 HTTPContext *c = NULL;
3020 const char *proto_str;
3021
3022 /* XXX: should output a warning page when coming
3023 close to the connection limit */
3024 if (nb_connections >= nb_max_connections)
3025 goto fail;
3026
3027 /* add a new connection */
3028 c = av_mallocz(sizeof(HTTPContext));
3029 if (!c)
3030 goto fail;
3031
3032 c->fd = -1;
3033 c->poll_entry = NULL;
3034 c->from_addr = *from_addr;
3035 c->buffer_size = IOBUFFER_INIT_SIZE;
3036 c->buffer = av_malloc(c->buffer_size);
3037 if (!c->buffer)
3038 goto fail;
3039 nb_connections++;
3040 c->stream = stream;
3041 av_strlcpy(c->session_id, session_id, sizeof(c->session_id));
3042 c->state = HTTPSTATE_READY;
3043 c->is_packetized = 1;
3044 c->rtp_protocol = rtp_protocol;
3045
3046 /* protocol is shown in statistics */
3047 switch(c->rtp_protocol) {
3048 case RTSP_PROTOCOL_RTP_UDP_MULTICAST:
3049 proto_str = "MCAST";
3050 break;
3051 case RTSP_PROTOCOL_RTP_UDP:
3052 proto_str = "UDP";
3053 break;
3054 case RTSP_PROTOCOL_RTP_TCP:
3055 proto_str = "TCP";
3056 break;
3057 default:
3058 proto_str = "???";
3059 break;
3060 }
3061 av_strlcpy(c->protocol, "RTP/", sizeof(c->protocol));
3062 av_strlcat(c->protocol, proto_str, sizeof(c->protocol));
3063
3064 current_bandwidth += stream->bandwidth;
3065
3066 c->next = first_http_ctx;
3067 first_http_ctx = c;
3068 return c;
3069
3070 fail:
3071 if (c) {
3072 av_free(c->buffer);
3073 av_free(c);
3074 }
3075 return NULL;
3076 }
3077
3078 /* add a new RTP stream in an RTP connection (used in RTSP SETUP
3079 command). If RTP/TCP protocol is used, TCP connection 'rtsp_c' is
3080 used. */
3081 static int rtp_new_av_stream(HTTPContext *c,
3082 int stream_index, struct sockaddr_in *dest_addr,
3083 HTTPContext *rtsp_c)
3084 {
3085 AVFormatContext *ctx;
3086 AVStream *st;
3087 char *ipaddr;
3088 URLContext *h;
3089 uint8_t *dummy_buf;
3090 char buf2[32];
3091 int max_packet_size;
3092
3093 /* now we can open the relevant output stream */
3094 ctx = av_alloc_format_context();
3095 if (!ctx)
3096 return -1;
3097 ctx->oformat = guess_format("rtp", NULL, NULL);
3098
3099 st = av_mallocz(sizeof(AVStream));
3100 if (!st)
3101 goto fail;
3102 st->codec= avcodec_alloc_context();
3103 ctx->nb_streams = 1;
3104 ctx->streams[0] = st;
3105
3106 if (!c->stream->feed ||
3107 c->stream->feed == c->stream)
3108 memcpy(st, c->stream->streams[stream_index], sizeof(AVStream));
3109 else
3110 memcpy(st,
3111 c->stream->feed->streams[c->stream->feed_streams[stream_index]],
3112 sizeof(AVStream));
3113 st->priv_data = NULL;
3114
3115 /* build destination RTP address */
3116 ipaddr = inet_ntoa(dest_addr->sin_addr);
3117
3118 switch(c->rtp_protocol) {
3119 case RTSP_PROTOCOL_RTP_UDP:
3120 case RTSP_PROTOCOL_RTP_UDP_MULTICAST:
3121 /* RTP/UDP case */
3122
3123 /* XXX: also pass as parameter to function ? */
3124 if (c->stream->is_multicast) {
3125 int ttl;
3126 ttl = c->stream->multicast_ttl;
3127 if (!ttl)
3128 ttl = 16;
3129 snprintf(ctx->filename, sizeof(ctx->filename),
3130 "rtp://%s:%d?multicast=1&ttl=%d",
3131 ipaddr, ntohs(dest_addr->sin_port), ttl);
3132 } else {
3133 snprintf(ctx->filename, sizeof(ctx->filename),
3134 "rtp://%s:%d", ipaddr, ntohs(dest_addr->sin_port));
3135 }
3136
3137 if (url_open(&h, ctx->filename, URL_WRONLY) < 0)
3138 goto fail;
3139 c->rtp_handles[stream_index] = h;
3140 max_packet_size = url_get_max_packet_size(h);
3141 break;
3142 case RTSP_PROTOCOL_RTP_TCP:
3143 /* RTP/TCP case */
3144 c->rtsp_c = rtsp_c;
3145 max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
3146 break;
3147 default:
3148 goto fail;
3149 }
3150
3151 http_log("%s:%d - - [%s] \"PLAY %s/streamid=%d %s\"\n",
3152 ipaddr, ntohs(dest_addr->sin_port),
3153 ctime1(buf2),
3154 c->stream->filename, stream_index, c->protocol);
3155
3156 /* normally, no packets should be output here, but the packet size may be checked */
3157 if (url_open_dyn_packet_buf(&ctx->pb, max_packet_size) < 0) {
3158 /* XXX: close stream */
3159 goto fail;
3160 }
3161 av_set_parameters(ctx, NULL);
3162 if (av_write_header(ctx) < 0) {
3163 fail:
3164 if (h)
3165 url_close(h);
3166 av_free(ctx);
3167 return -1;
3168 }
3169 url_close_dyn_buf(ctx->pb, &dummy_buf);
3170 av_free(dummy_buf);
3171
3172 c->rtp_ctx[stream_index] = ctx;
3173 return 0;
3174 }
3175
3176 /********************************************************************/
3177 /* ffserver initialization */
3178
3179 static AVStream *add_av_stream1(FFStream *stream, AVCodecContext *codec)
3180 {
3181 AVStream *fst;
3182
3183 fst = av_mallocz(sizeof(AVStream));
3184 if (!fst)
3185 return NULL;
3186 fst->codec= avcodec_alloc_context();
3187 fst->priv_data = av_mallocz(sizeof(FeedData));
3188 memcpy(fst->codec, codec, sizeof(AVCodecContext));
3189 fst->codec->coded_frame = &dummy_frame;
3190 fst->index = stream->nb_streams;
3191 av_set_pts_info(fst, 33, 1, 90000);
3192 stream->streams[stream->nb_streams++] = fst;
3193 return fst;
3194 }
3195
3196 /* return the stream number in the feed */
3197 static int add_av_stream(FFStream *feed, AVStream *st)
3198 {
3199 AVStream *fst;
3200 AVCodecContext *av, *av1;
3201 int i;
3202
3203 av = st->codec;
3204 for(i=0;i<feed->nb_streams;i++) {
3205 st = feed->streams[i];
3206 av1 = st->codec;
3207 if (av1->codec_id == av->codec_id &&
3208 av1->codec_type == av->codec_type &&
3209 av1->bit_rate == av->bit_rate) {
3210
3211 switch(av->codec_type) {
3212 case CODEC_TYPE_AUDIO:
3213 if (av1->channels == av->channels &&
3214 av1->sample_rate == av->sample_rate)
3215 goto found;
3216 break;
3217 case CODEC_TYPE_VIDEO:
3218 if (av1->width == av->width &&
3219 av1->height == av->height &&
3220 av1->time_base.den == av->time_base.den &&
3221 av1->time_base.num == av->time_base.num &&
3222 av1->gop_size == av->gop_size)
3223 goto found;
3224 break;
3225 default:
3226 abort();
3227 }
3228 }
3229 }
3230
3231 fst = add_av_stream1(feed, av);
3232 if (!fst)
3233 return -1;
3234 return feed->nb_streams - 1;
3235 found:
3236 return i;
3237 }
3238
3239 static void remove_stream(FFStream *stream)
3240 {
3241 FFStream **ps;
3242 ps = &first_stream;
3243 while (*ps != NULL) {
3244 if (*ps == stream)
3245 *ps = (*ps)->next;
3246 else
3247 ps = &(*ps)->next;
3248 }
3249 }
3250
3251 /* specific mpeg4 handling : we extract the raw parameters */
3252 static void extract_mpeg4_header(AVFormatContext *infile)
3253 {
3254 int mpeg4_count, i, size;
3255 AVPacket pkt;
3256 AVStream *st;
3257 const uint8_t *p;
3258
3259 mpeg4_count = 0;
3260 for(i=0;i<infile->nb_streams;i++) {
3261 st = infile->streams[i];
3262 if (st->codec->codec_id == CODEC_ID_MPEG4 &&
3263 st->codec->extradata_size == 0) {
3264 mpeg4_count++;
3265 }
3266 }
3267 if (!mpeg4_count)
3268 return;
3269
3270 printf("MPEG4 without extra data: trying to find header in %s\n", infile->filename);
3271 while (mpeg4_count > 0) {
3272 if (av_read_packet(infile, &pkt) < 0)
3273 break;
3274 st = infile->streams[pkt.stream_index];
3275 if (st->codec->codec_id == CODEC_ID_MPEG4 &&
3276 st->codec->extradata_size == 0) {
3277 av_freep(&st->codec->extradata);
3278 /* fill extradata with the header */
3279 /* XXX: we make hard suppositions here ! */
3280 p = pkt.data;
3281 while (p < pkt.data + pkt.size - 4) {
3282 /* stop when vop header is found */
3283 if (p[0] == 0x00 && p[1] == 0x00 &&
3284 p[2] == 0x01 && p[3] == 0xb6) {
3285 size = p - pkt.data;
3286 // av_hex_dump_log(infile, AV_LOG_DEBUG, pkt.data, size);
3287 st->codec->extradata = av_malloc(size);
3288 st->codec->extradata_size = size;
3289 memcpy(st->codec->extradata, pkt.data, size);
3290 break;
3291 }
3292 p++;
3293 }
3294 mpeg4_count--;
3295 }
3296 av_free_packet(&pkt);
3297 }
3298 }
3299
3300 /* compute the needed AVStream for each file */
3301 static void build_file_streams(void)
3302 {
3303 FFStream *stream, *stream_next;
3304 AVFormatContext *infile;
3305 int i, ret;
3306
3307 /* gather all streams */
3308 for(stream = first_stream; stream != NULL; stream = stream_next) {
3309 stream_next = stream->next;
3310 if (stream->stream_type == STREAM_TYPE_LIVE &&
3311 !stream->feed) {
3312 /* the stream comes from a file */
3313 /* try to open the file */
3314 /* open stream */
3315 stream->ap_in = av_mallocz(sizeof(AVFormatParameters));
3316 if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
3317 /* specific case : if transport stream output to RTP,
3318 we use a raw transport stream reader */
3319 stream->ap_in->mpeg2ts_raw = 1;
3320 stream->ap_in->mpeg2ts_compute_pcr = 1;
3321 }
3322
3323 if ((ret = av_open_input_file(&infile, stream->feed_filename,
3324 stream->ifmt, 0, stream->ap_in)) < 0) {
3325 http_log("could not open %s: %d\n", stream->feed_filename, ret);
3326 /* remove stream (no need to spend more time on it) */
3327 fail:
3328 remove_stream(stream);
3329 } else {
3330 /* find all the AVStreams inside and reference them in
3331 'stream' */
3332 if (av_find_stream_info(infile) < 0) {
3333 http_log("Could not find codec parameters from '%s'",
3334 stream->feed_filename);
3335 av_close_input_file(infile);
3336 goto fail;
3337 }
3338 extract_mpeg4_header(infile);
3339
3340 for(i=0;i<infile->nb_streams;i++)
3341 add_av_stream1(stream, infile->streams[i]->codec);
3342
3343 av_close_input_file(infile);
3344 }
3345 }
3346 }
3347 }
3348
3349 /* compute the needed AVStream for each feed */
3350 static void build_feed_streams(void)
3351 {
3352 FFStream *stream, *feed;
3353 int i;
3354
3355 /* gather all streams */
3356 for(stream = first_stream; stream != NULL; stream = stream->next) {
3357 feed = stream->feed;
3358 if (feed) {
3359 if (!stream->is_feed) {
3360 /* we handle a stream coming from a feed */
3361 for(i=0;i<stream->nb_streams;i++)
3362 stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]);
3363 }
3364 }
3365 }
3366
3367 /* gather all streams */
3368 for(stream = first_stream; stream != NULL; stream = stream->next) {
3369 feed = stream->feed;
3370 if (feed) {
3371 if (stream->is_feed) {
3372 for(i=0;i<stream->nb_streams;i++)
3373 stream->feed_streams[i] = i;
3374 }
3375 }
3376 }
3377
3378 /* create feed files if needed */
3379 for(feed = first_feed; feed != NULL; feed = feed->next_feed) {
3380 int fd;
3381
3382 if (url_exist(feed->feed_filename)) {
3383 /* See if it matches */
3384 AVFormatContext *s;
3385 int matches = 0;
3386
3387 if (av_open_input_file(&s, feed->feed_filename, NULL, FFM_PACKET_SIZE, NULL) >= 0) {
3388 /* Now see if it matches */
3389 if (s->nb_streams == feed->nb_streams) {
3390 matches = 1;
3391 for(i=0;i<s->nb_streams;i++) {
3392 AVStream *sf, *ss;
3393 sf = feed->streams[i];
3394 ss = s->streams[i];
3395
3396 if (sf->index != ss->index ||
3397 sf->id != ss->id) {
3398 printf("Index & Id do not match for stream %d (%s)\n",
3399 i, feed->feed_filename);
3400 matches = 0;
3401 } else {
3402 AVCodecContext *ccf, *ccs;
3403
3404 ccf = sf->codec;
3405 ccs = ss->codec;
3406 #define CHECK_CODEC(x) (ccf->x != ccs->x)
3407
3408 if (CHECK_CODEC(codec) || CHECK_CODEC(codec_type)) {
3409 printf("Codecs do not match for stream %d\n", i);
3410 matches = 0;
3411 } else if (CHECK_CODEC(bit_rate) || CHECK_CODEC(flags)) {
3412 printf("Codec bitrates do not match for stream %d\n", i);
3413 matches = 0;
3414 } else if (ccf->codec_type == CODEC_TYPE_VIDEO) {
3415 if (CHECK_CODEC(time_base.den) ||
3416 CHECK_CODEC(time_base.num) ||
3417 CHECK_CODEC(width) ||
3418 CHECK_CODEC(height)) {
3419 printf("Codec width, height and framerate do not match for stream %d\n", i);
3420 matches = 0;
3421 }
3422 } else if (ccf->codec_type == CODEC_TYPE_AUDIO) {
3423 if (CHECK_CODEC(sample_rate) ||
3424 CHECK_CODEC(channels) ||
3425 CHECK_CODEC(frame_size)) {
3426 printf("Codec sample_rate, channels, frame_size do not match for stream %d\n", i);
3427 matches = 0;
3428 }
3429 } else {
3430 printf("Unknown codec type\n");
3431 matches = 0;
3432 }
3433 }
3434 if (!matches)
3435 break;
3436 }
3437 } else
3438 printf("Deleting feed file '%s' as stream counts differ (%d != %d)\n",
3439 feed->feed_filename, s->nb_streams, feed->nb_streams);
3440
3441 av_close_input_file(s);
3442 } else
3443 printf("Deleting feed file '%s' as it appears to be corrupt\n",
3444 feed->feed_filename);
3445
3446 if (!matches) {
3447 if (feed->readonly) {
3448 printf("Unable to delete feed file '%s' as it is marked readonly\n",
3449 feed->feed_filename);
3450 exit(1);
3451 }
3452 unlink(feed->feed_filename);
3453 }
3454 }
3455 if (!url_exist(feed->feed_filename)) {
3456 AVFormatContext s1, *s = &s1;
3457
3458 if (feed->readonly) {
3459 printf("Unable to create feed file '%s' as it is marked readonly\n",
3460 feed->feed_filename);
3461 exit(1);
3462 }
3463
3464 /* only write the header of the ffm file */
3465 if (url_fopen(&s->pb, feed->feed_filename, URL_WRONLY) < 0) {
3466 fprintf(stderr, "Could not open output feed file '%s'\n",
3467 feed->feed_filename);
3468 exit(1);
3469 }
3470 s->oformat = feed->fmt;
3471 s->nb_streams = feed->nb_streams;
3472 for(i=0;i<s->nb_streams;i++) {
3473 AVStream *st;
3474 st = feed->streams[i];
3475 s->streams[i] = st;
3476 }
3477 av_set_parameters(s, NULL);
3478 if (av_write_header(s) < 0) {
3479 fprintf(stderr, "Container doesn't supports the required parameters\n");
3480 exit(1);
3481 }
3482 /* XXX: need better api */
3483 av_freep(&s->priv_data);
3484 url_fclose(s->pb);
3485 }
3486 /* get feed size and write index */
3487 fd = open(feed->feed_filename, O_RDONLY);
3488 if (fd < 0) {
3489 fprintf(stderr, "Could not open output feed file '%s'\n",
3490 feed->feed_filename);
3491 exit(1);
3492 }
3493
3494 feed->feed_write_index = ffm_read_write_index(fd);
3495 feed->feed_size = lseek(fd, 0, SEEK_END);
3496 /* ensure that we do not wrap before the end of file */
3497 if (feed->feed_max_size && feed->feed_max_size < feed->feed_size)
3498 feed->feed_max_size = feed->feed_size;
3499
3500 close(fd);
3501 }
3502 }
3503
3504 /* compute the bandwidth used by each stream */
3505 static void compute_bandwidth(void)
3506 {
3507 int bandwidth, i;
3508 FFStream *stream;
3509
3510 for(stream = first_stream; stream != NULL; stream = stream->next) {
3511 bandwidth = 0;
3512 for(i=0;i<stream->nb_streams;i++) {
3513 AVStream *st = stream->streams[i];
3514 switch(st->codec->codec_type) {
3515 case CODEC_TYPE_AUDIO:
3516 case CODEC_TYPE_VIDEO:
3517 bandwidth += st->codec->bit_rate;
3518 break;
3519 default:
3520 break;
3521 }
3522 }
3523 stream->bandwidth = (bandwidth + 999) / 1000;
3524 }
3525 }
3526
3527 static void get_arg(char *buf, int buf_size, const char **pp)
3528 {
3529 const char *p;
3530 char *q;
3531 int quote;
3532
3533 p = *pp;
3534 while (isspace(*p)) p++;
3535 q = buf;
3536 quote = 0;
3537 if (*p == '\"' || *p == '\'')
3538 quote = *p++;
3539 for(;;) {
3540 if (quote) {
3541 if (*p == quote)
3542 break;
3543 } else {
3544 if (isspace(*p))
3545 break;
3546 }
3547 if (*p == '\0')
3548 break;
3549 if ((q - buf) < buf_size - 1)
3550 *q++ = *p;
3551 p++;
3552 }
3553 *q = '\0';
3554 if (quote && *p == quote)
3555 p++;
3556 *pp = p;
3557 }
3558
3559 /* add a codec and set the default parameters */
3560 static void add_codec(FFStream *stream, AVCodecContext *av)
3561 {
3562 AVStream *st;
3563
3564 /* compute default parameters */
3565 switch(av->codec_type) {
3566 case CODEC_TYPE_AUDIO:
3567 if (av->bit_rate == 0)
3568 av->bit_rate = 64000;
3569 if (av->sample_rate == 0)
3570 av->sample_rate = 22050;
3571 if (av->channels == 0)
3572 av->channels = 1;
3573 break;
3574 case CODEC_TYPE_VIDEO:
3575 if (av->bit_rate == 0)
3576 av->bit_rate = 64000;
3577 if (av->time_base.num == 0){
3578 av->time_base.den = 5;
3579 av->time_base.num = 1;
3580 }
3581 if (av->width == 0 || av->height == 0) {
3582 av->width = 160;
3583 av->height = 128;
3584 }
3585 /* Bitrate tolerance is less for streaming */
3586 if (av->bit_rate_tolerance == 0)
3587 av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
3588 (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
3589 if (av->qmin == 0)
3590 av->qmin = 3;
3591 if (av->qmax == 0)
3592 av->qmax = 31;
3593 if (av->max_qdiff == 0)
3594 av->max_qdiff = 3;
3595 av->qcompress = 0.5;
3596 av->qblur = 0.5;
3597
3598 if (!av->nsse_weight)
3599 av->nsse_weight = 8;
3600
3601 av->frame_skip_cmp = FF_CMP_DCTMAX;
3602 av->me_method = ME_EPZS;
3603 av->rc_buffer_aggressivity = 1.0;
3604
3605 if (!av->rc_eq)
3606 av->rc_eq = "tex^qComp";
3607 if (!av->i_quant_factor)
3608 av->i_quant_factor = -0.8;
3609 if (!av->b_quant_factor)
3610 av->b_quant_factor = 1.25;
3611 if (!av->b_quant_offset)
3612 av->b_quant_offset = 1.25;
3613 if (!av->rc_max_rate)
3614 av->rc_max_rate = av->bit_rate * 2;
3615
3616 if (av->rc_max_rate && !av->rc_buffer_size) {
3617 av->rc_buffer_size = av->rc_max_rate;
3618 }
3619
3620
3621 break;
3622 default:
3623 abort();
3624 }
3625
3626 st = av_mallocz(sizeof(AVStream));
3627 if (!st)
3628 return;
3629 st->codec = avcodec_alloc_context();
3630 stream->streams[stream->nb_streams++] = st;
3631 memcpy(st->codec, av, sizeof(AVCodecContext));
3632 }
3633
3634 static int opt_audio_codec(const char *arg)
3635 {
3636 AVCodec *p= avcodec_find_encoder_by_name(arg);
3637
3638 if (p == NULL || p->type != CODEC_TYPE_AUDIO)
3639 return CODEC_ID_NONE;
3640
3641 return p->id;
3642 }
3643
3644 static int opt_video_codec(const char *arg)
3645 {
3646 AVCodec *p= avcodec_find_encoder_by_name(arg);
3647
3648 if (p == NULL || p->type != CODEC_TYPE_VIDEO)
3649 return CODEC_ID_NONE;
3650
3651 return p->id;
3652 }
3653
3654 /* simplistic plugin support */
3655
3656 #ifdef HAVE_DLOPEN
3657 static void load_module(const char *filename)
3658 {
3659 void *dll;
3660 void (*init_func)(void);
3661 dll = dlopen(filename, RTLD_NOW);
3662 if (!dll) {
3663 fprintf(stderr, "Could not load module '%s' - %s\n",
3664 filename, dlerror());
3665 return;
3666 }
3667
3668 init_func = dlsym(dll, "ffserver_module_init");
3669 if (!init_func) {
3670 fprintf(stderr,
3671 "%s: init function 'ffserver_module_init()' not found\n",
3672 filename);
3673 dlclose(dll);
3674 }
3675
3676 init_func();
3677 }
3678 #endif
3679
3680 static int parse_ffconfig(const char *filename)
3681 {
3682 FILE *f;
3683 char line[1024];
3684 char cmd[64];
3685 char arg[1024];
3686 const char *p;
3687 int val, errors, line_num;
3688 FFStream **last_stream, *stream, *redirect;
3689 FFStream **last_feed, *feed;
3690 AVCodecContext audio_enc, video_enc;
3691 int audio_id, video_id;
3692
3693 f = fopen(filename, "r");
3694 if (!f) {
3695 perror(filename);
3696 return -1;
3697 }
3698
3699 errors = 0;
3700 line_num = 0;
3701 first_stream = NULL;
3702 last_stream = &first_stream;
3703 first_feed = NULL;
3704 last_feed = &first_feed;
3705 stream = NULL;
3706 feed = NULL;
3707 redirect = NULL;
3708 audio_id = CODEC_ID_NONE;
3709 video_id = CODEC_ID_NONE;
3710 for(;;) {
3711 if (fgets(line, sizeof(line), f) == NULL)
3712 break;
3713 line_num++;
3714 p = line;
3715 while (isspace(*p))
3716 p++;
3717 if (*p == '\0' || *p == '#')
3718 continue;
3719
3720 get_arg(cmd, sizeof(cmd), &p);
3721
3722 if (!strcasecmp(cmd, "Port")) {
3723 get_arg(arg, sizeof(arg), &p);
3724 val = atoi(arg);
3725 if (val < 1 || val > 65536) {
3726 fprintf(stderr, "%s:%d: Invalid port: %s\n",
3727 filename, line_num, arg);
3728 errors++;
3729 }
3730 my_http_addr.sin_port = htons(val);
3731 } else if (!strcasecmp(cmd, "BindAddress")) {
3732 get_arg(arg, sizeof(arg), &p);
3733 if (resolve_host(&my_http_addr.sin_addr, arg) != 0) {
3734 fprintf(stderr, "%s:%d: Invalid host/IP address: %s\n",
3735 filename, line_num, arg);
3736 errors++;
3737 }
3738 } else if (!strcasecmp(cmd, "NoDaemon")) {
3739 ffserver_daemon = 0;
3740 } else if (!strcasecmp(cmd, "RTSPPort")) {
3741 get_arg(arg, sizeof(arg), &p);
3742 val = atoi(arg);
3743 if (val < 1 || val > 65536) {
3744 fprintf(stderr, "%s:%d: Invalid port: %s\n",
3745 filename, line_num, arg);
3746 errors++;
3747 }
3748 my_rtsp_addr.sin_port = htons(atoi(arg));
3749 } else if (!strcasecmp(cmd, "RTSPBindAddress")) {
3750 get_arg(arg, sizeof(arg), &p);
3751 if (resolve_host(&my_rtsp_addr.sin_addr, arg) != 0) {
3752 fprintf(stderr, "%s:%d: Invalid host/IP address: %s\n",
3753 filename, line_num, arg);
3754 errors++;
3755 }
3756 } else if (!strcasecmp(cmd, "MaxClients")) {
3757 get_arg(arg, sizeof(arg), &p);
3758 val = atoi(arg);
3759 if (val < 1 || val > HTTP_MAX_CONNECTIONS) {
3760 fprintf(stderr, "%s:%d: Invalid MaxClients: %s\n",
3761 filename, line_num, arg);
3762 errors++;
3763 } else {
3764 nb_max_connections = val;
3765 }
3766 } else if (!strcasecmp(cmd, "MaxBandwidth")) {
3767 get_arg(arg, sizeof(arg), &p);
3768 val = atoi(arg);
3769 if (val < 10 || val > 100000) {
3770 fprintf(stderr, "%s:%d: Invalid MaxBandwidth: %s\n",
3771 filename, line_num, arg);
3772 errors++;
3773 } else
3774 max_bandwidth = val;
3775 } else if (!strcasecmp(cmd, "CustomLog")) {
3776 get_arg(logfilename, sizeof(logfilename), &p);
3777 } else if (!strcasecmp(cmd, "<Feed")) {
3778 /*********************************************/
3779 /* Feed related options */
3780 char *q;
3781 if (stream || feed) {
3782 fprintf(stderr, "%s:%d: Already in a tag\n",
3783 filename, line_num);
3784 } else {
3785 feed = av_mallocz(sizeof(FFStream));
3786 /* add in stream list */
3787 *last_stream = feed;
3788 last_stream = &feed->next;
3789 /* add in feed list */
3790 *last_feed = feed;
3791 last_feed = &feed->next_feed;
3792
3793 get_arg(feed->filename, sizeof(feed->filename), &p);
3794 q = strrchr(feed->filename, '>');
3795 if (*q)
3796 *q = '\0';
3797 feed->fmt = guess_format("ffm", NULL, NULL);
3798 /* defaut feed file */
3799 snprintf(feed->feed_filename, sizeof(feed->feed_filename),
3800 "/tmp/%s.ffm", feed->filename);
3801 feed->feed_max_size = 5 * 1024 * 1024;
3802 feed->is_feed = 1;
3803 feed->feed = feed; /* self feeding :-) */
3804 }
3805 } else if (!strcasecmp(cmd, "Launch")) {
3806 if (feed) {
3807 int i;
3808
3809 feed->child_argv = av_mallocz(64 * sizeof(char *));
3810
3811 for (i = 0; i < 62; i++) {
3812 get_arg(arg, sizeof(arg), &p);
3813 if (!arg[0])
3814 break;
3815
3816 feed->child_argv[i] = av_strdup(arg);
3817 }
3818
3819 feed->child_argv[i] = av_malloc(30 + strlen(feed->filename));
3820
3821 snprintf(feed->child_argv[i], 30+strlen(feed->filename),
3822 "http://%s:%d/%s",
3823 (my_http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :
3824 inet_ntoa(my_http_addr.sin_addr),
3825 ntohs(my_http_addr.sin_port), feed->filename);
3826
3827 if (ffserver_debug)
3828 {
3829 int j;
3830 fprintf(stdout, "Launch commandline: ");
3831 for (j = 0; j <= i; j++)
3832 fprintf(stdout, "%s ", feed->child_argv[j]);
3833 fprintf(stdout, "\n");
3834 }
3835 }
3836 } else if (!strcasecmp(cmd, "ReadOnlyFile")) {
3837 if (feed) {
3838 get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
3839 feed->readonly = 1;
3840 } else if (stream) {
3841 get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
3842 }
3843 } else if (!strcasecmp(cmd, "File")) {
3844 if (feed) {
3845 get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
3846 } else if (stream)
3847 get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
3848 } else if (!strcasecmp(cmd, "FileMaxSize")) {
3849 if (feed) {
3850 char *p1;
3851 double fsize;
3852
3853 get_arg(arg, sizeof(arg), &p);
3854 p1 = arg;
3855 fsize = strtod(p1, &p1);
3856 switch(toupper(*p1)) {
3857 case 'K':
3858 fsize *= 1024;
3859 break;
3860 case 'M':
3861 fsize *= 1024 * 1024;
3862 break;
3863 case 'G':
3864 fsize *= 1024 * 1024 * 1024;
3865 break;
3866 }
3867 feed->feed_max_size = (int64_t)fsize;
3868 }
3869 } else if (!strcasecmp(cmd, "</Feed>")) {
3870 if (!feed) {
3871 fprintf(stderr, "%s:%d: No corresponding <Feed> for </Feed>\n",
3872 filename, line_num);
3873 errors++;
3874 }
3875 feed = NULL;
3876 } else if (!strcasecmp(cmd, "<Stream")) {
3877 /*********************************************/
3878 /* Stream related options */
3879 char *q;
3880 if (stream || feed) {
3881 fprintf(stderr, "%s:%d: Already in a tag\n",
3882 filename, line_num);
3883 } else {
3884 stream = av_mallocz(sizeof(FFStream));
3885 *last_stream = stream;
3886 last_stream = &stream->next;
3887
3888 get_arg(stream->filename, sizeof(stream->filename), &p);
3889 q = strrchr(stream->filename, '>');
3890 if (*q)
3891 *q = '\0';
3892 stream->fmt = guess_stream_format(NULL, stream->filename, NULL);
3893 memset(&audio_enc, 0, sizeof(AVCodecContext));
3894 memset(&video_enc, 0, sizeof(AVCodecContext));
3895 audio_id = CODEC_ID_NONE;
3896 video_id = CODEC_ID_NONE;
3897 if (stream->fmt) {
3898 audio_id = stream->fmt->audio_codec;
3899 video_id = stream->fmt->video_codec;
3900 }
3901 }
3902 } else if (!strcasecmp(cmd, "Feed")) {
3903 get_arg(arg, sizeof(arg), &p);
3904 if (stream) {
3905 FFStream *sfeed;
3906
3907 sfeed = first_feed;
3908 while (sfeed != NULL) {
3909 if (!strcmp(sfeed->filename, arg))
3910 break;
3911 sfeed = sfeed->next_feed;
3912 }
3913 if (!sfeed)
3914 fprintf(stderr, "%s:%d: feed '%s' not defined\n",
3915 filename, line_num, arg);
3916 else
3917 stream->feed = sfeed;
3918 }
3919 } else if (!strcasecmp(cmd, "Format")) {
3920 get_arg(arg, sizeof(arg), &p);
3921 if (!strcmp(arg, "status")) {
3922 stream->stream_type = STREAM_TYPE_STATUS;
3923 stream->fmt = NULL;
3924 } else {
3925 stream->stream_type = STREAM_TYPE_LIVE;
3926 /* jpeg cannot be used here, so use single frame jpeg */
3927 if (!strcmp(arg, "jpeg"))
3928 strcpy(arg, "mjpeg");
3929 stream->fmt = guess_stream_format(arg, NULL, NULL);
3930 if (!stream->fmt) {
3931 fprintf(stderr, "%s:%d: Unknown Format: %s\n",
3932 filename, line_num, arg);
3933 errors++;
3934 }
3935 }
3936 if (stream->fmt) {
3937 audio_id = stream->fmt->audio_codec;
3938 video_id = stream->fmt->video_codec;
3939 }
3940 } else if (!strcasecmp(cmd, "InputFormat")) {
3941 get_arg(arg, sizeof(arg), &p);
3942 stream->ifmt = av_find_input_format(arg);
3943 if (!stream->ifmt) {
3944 fprintf(stderr, "%s:%d: Unknown input format: %s\n",
3945 filename, line_num, arg);
3946 }
3947 } else if (!strcasecmp(cmd, "FaviconURL")) {
3948 if (stream && stream->stream_type == STREAM_TYPE_STATUS) {
3949 get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
3950 } else {
3951 fprintf(stderr, "%s:%d: FaviconURL only permitted for status streams\n",
3952 filename, line_num);
3953 errors++;
3954 }
3955 } else if (!strcasecmp(cmd, "Author")) {
3956 if (stream)
3957 get_arg(stream->author, sizeof(stream->author), &p);
3958 } else if (!strcasecmp(cmd, "Comment")) {
3959 if (stream)
3960 get_arg(stream->comment, sizeof(stream->comment), &p);
3961 } else if (!strcasecmp(cmd, "Copyright")) {
3962 if (stream)
3963 get_arg(stream->copyright, sizeof(stream->copyright), &p);
3964 } else if (!strcasecmp(cmd, "Title")) {
3965 if (stream)
3966 get_arg(stream->title, sizeof(stream->title), &p);
3967 } else if (!strcasecmp(cmd, "Preroll")) {
3968 get_arg(arg, sizeof(arg), &p);
3969 if (stream)
3970 stream->prebuffer = atof(arg) * 1000;
3971 } else if (!strcasecmp(cmd, "StartSendOnKey")) {
3972 if (stream)
3973 stream->send_on_key = 1;
3974 } else if (!strcasecmp(cmd, "AudioCodec")) {
3975 get_arg(arg, sizeof(arg), &p);
3976 audio_id = opt_audio_codec(arg);
3977 if (audio_id == CODEC_ID_NONE) {
3978 fprintf(stderr, "%s:%d: Unknown AudioCodec: %s\n",
3979 filename, line_num, arg);
3980 errors++;
3981 }
3982 } else if (!strcasecmp(cmd, "VideoCodec")) {
3983 get_arg(arg, sizeof(arg), &p);
3984 video_id = opt_video_codec(arg);
3985 if (video_id == CODEC_ID_NONE) {
3986 fprintf(stderr, "%s:%d: Unknown VideoCodec: %s\n",
3987 filename, line_num, arg);
3988 errors++;
3989 }
3990 } else if (!strcasecmp(cmd, "MaxTime")) {
3991 get_arg(arg, sizeof(arg), &p);
3992 if (stream)
3993 stream->max_time = atof(arg) * 1000;
3994 } else if (!strcasecmp(cmd, "AudioBitRate")) {
3995 get_arg(arg, sizeof(arg), &p);
3996 if (stream)
3997 audio_enc.bit_rate = atoi(arg) * 1000;
3998 } else if (!strcasecmp(cmd, "AudioChannels")) {
3999 get_arg(arg, sizeof(arg), &p);
4000 if (stream)
4001 audio_enc.channels = atoi(arg);
4002 } else if (!strcasecmp(cmd, "AudioSampleRate")) {
4003 get_arg(arg, sizeof(arg), &p);
4004 if (stream)
4005 audio_enc.sample_rate = atoi(arg);
4006 } else if (!strcasecmp(cmd, "AudioQuality")) {
4007 get_arg(arg, sizeof(arg), &p);
4008 if (stream) {
4009 // audio_enc.quality = atof(arg) * 1000;
4010 }
4011 } else if (!strcasecmp(cmd, "VideoBitRateRange")) {
4012 if (stream) {
4013 int minrate, maxrate;
4014
4015 get_arg(arg, sizeof(arg), &p);
4016
4017 if (sscanf(arg, "%d-%d", &minrate, &maxrate) == 2) {
4018 video_enc.rc_min_rate = minrate * 1000;
4019 video_enc.rc_max_rate = maxrate * 1000;
4020 } else {
4021 fprintf(stderr, "%s:%d: Incorrect format for VideoBitRateRange -- should be <min>-<max>: %s\n",
4022 filename, line_num, arg);
4023 errors++;
4024 }
4025 }
4026 } else if (!strcasecmp(cmd, "Debug")) {
4027 if (stream) {
4028 get_arg(arg, sizeof(arg), &p);
4029 video_enc.debug = strtol(arg,0,0);
4030 }
4031 } else if (!strcasecmp(cmd, "Strict")) {
4032 if (stream) {
4033 get_arg(arg, sizeof(arg), &p);
4034 video_enc.strict_std_compliance = atoi(arg);
4035 }
4036 } else if (!strcasecmp(cmd, "VideoBufferSize")) {
4037 if (stream) {
4038 get_arg(arg, sizeof(arg), &p);
4039 video_enc.rc_buffer_size = atoi(arg) * 8*1024;
4040 }
4041 } else if (!strcasecmp(cmd, "VideoBitRateTolerance")) {
4042 if (stream) {
4043 get_arg(arg, sizeof(arg), &p);
4044 video_enc.bit_rate_tolerance = atoi(arg) * 1000;
4045 }
4046 } else if (!strcasecmp(cmd, "VideoBitRate")) {
4047 get_arg(arg, sizeof(arg), &p);
4048 if (stream) {
4049 video_enc.bit_rate = atoi(arg) * 1000;
4050 }
4051 } else if (!strcasecmp(cmd, "VideoSize")) {
4052 get_arg(arg, sizeof(arg), &p);
4053 if (stream) {
4054 av_parse_video_frame_size(&video_enc.width, &video_enc.height, arg);
4055 if ((video_enc.width % 16) != 0 ||
4056 (video_enc.height % 16) != 0) {
4057 fprintf(stderr, "%s:%d: Image size must be a multiple of 16\n",
4058 filename, line_num);
4059 errors++;
4060 }
4061 }
4062 } else if (!strcasecmp(cmd, "VideoFrameRate")) {
4063 get_arg(arg, sizeof(arg), &p);
4064 if (stream) {
4065 video_enc.time_base.num= DEFAULT_FRAME_RATE_BASE;
4066 video_enc.time_base.den = (int)(strtod(arg, NULL) * video_enc.time_base.num);
4067 }
4068 } else if (!strcasecmp(cmd, "VideoGopSize")) {
4069 get_arg(arg, sizeof(arg), &p);
4070 if (stream)
4071 video_enc.gop_size = atoi(arg);
4072 } else if (!strcasecmp(cmd, "VideoIntraOnly")) {
4073 if (stream)
4074 video_enc.gop_size = 1;
4075 } else if (!strcasecmp(cmd, "VideoHighQuality")) {
4076 if (stream)
4077 video_enc.mb_decision = FF_MB_DECISION_BITS;
4078 } else if (!strcasecmp(cmd, "Video4MotionVector")) {
4079 if (stream) {
4080 video_enc.mb_decision = FF_MB_DECISION_BITS; //FIXME remove
4081 video_enc.flags |= CODEC_FLAG_4MV;
4082 }
4083 } else if (!strcasecmp(cmd, "VideoTag")) {
4084 get_arg(arg, sizeof(arg), &p);
4085 if ((strlen(arg) == 4) && stream)
4086 video_enc.codec_tag = ff_get_fourcc(arg);
4087 } else if (!strcasecmp(cmd, "BitExact")) {
4088 if (stream)
4089 video_enc.flags |= CODEC_FLAG_BITEXACT;
4090 } else if (!strcasecmp(cmd, "DctFastint")) {
4091 if (stream)
4092 video_enc.dct_algo = FF_DCT_FASTINT;
4093 } else if (!strcasecmp(cmd, "IdctSimple")) {
4094 if (stream)
4095 video_enc.idct_algo = FF_IDCT_SIMPLE;
4096 } else if (!strcasecmp(cmd, "Qscale")) {
4097 get_arg(arg, sizeof(arg), &p);
4098 if (stream) {
4099 video_enc.flags |= CODEC_FLAG_QSCALE;
4100 video_enc.global_quality = FF_QP2LAMBDA * atoi(arg);
4101 }
4102 } else if (!strcasecmp(cmd, "VideoQDiff")) {
4103 get_arg(arg, sizeof(arg), &p);
4104 if (stream) {
4105 video_enc.max_qdiff = atoi(arg);
4106 if (video_enc.max_qdiff < 1 || video_enc.max_qdiff > 31) {
4107 fprintf(stderr, "%s:%d: VideoQDiff out of range\n",
4108 filename, line_num);
4109 errors++;
4110 }
4111 }
4112 } else if (!strcasecmp(cmd, "VideoQMax")) {
4113 get_arg(arg, sizeof(arg), &p);
4114 if (stream) {
4115 video_enc.qmax = atoi(arg);
4116 if (video_enc.qmax < 1 || video_enc.qmax > 31) {
4117 fprintf(stderr, "%s:%d: VideoQMax out of range\n",
4118 filename, line_num);
4119 errors++;
4120 }
4121 }
4122 } else if (!strcasecmp(cmd, "VideoQMin")) {
4123 get_arg(arg, sizeof(arg), &p);
4124 if (stream) {
4125 video_enc.qmin = atoi(arg);
4126 if (video_enc.qmin < 1 || video_enc.qmin > 31) {
4127 fprintf(stderr, "%s:%d: VideoQMin out of range\n",
4128 filename, line_num);
4129 errors++;
4130 }
4131 }
4132 } else if (!strcasecmp(cmd, "LumaElim")) {
4133 get_arg(arg, sizeof(arg), &p);
4134 if (stream)
4135 video_enc.luma_elim_threshold = atoi(arg);
4136 } else if (!strcasecmp(cmd, "ChromaElim")) {
4137 get_arg(arg, sizeof(arg), &p);
4138 if (stream)
4139 video_enc.chroma_elim_threshold = atoi(arg);
4140 } else if (!strcasecmp(cmd, "LumiMask")) {
4141 get_arg(arg, sizeof(arg), &p);
4142 if (stream)
4143 video_enc.lumi_masking = atof(arg);
4144 } else if (!strcasecmp(cmd, "DarkMask")) {
4145 get_arg(arg, sizeof(arg), &p);
4146 if (stream)
4147 video_enc.dark_masking = atof(arg);
4148 } else if (!strcasecmp(cmd, "NoVideo")) {
4149 video_id = CODEC_ID_NONE;
4150 } else if (!strcasecmp(cmd, "NoAudio")) {
4151 audio_id = CODEC_ID_NONE;
4152 } else if (!strcasecmp(cmd, "ACL")) {
4153 IPAddressACL acl;
4154
4155 get_arg(arg, sizeof(arg), &p);
4156 if (strcasecmp(arg, "allow") == 0)
4157 acl.action = IP_ALLOW;
4158 else if (strcasecmp(arg, "deny") == 0)
4159 acl.action = IP_DENY;
4160 else {
4161 fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
4162 filename, line_num, arg);
4163 errors++;
4164 }
4165
4166 get_arg(arg, sizeof(arg), &p);
4167
4168 if (resolve_host(&acl.first, arg) != 0) {
4169 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
4170 filename, line_num, arg);
4171 errors++;
4172 } else
4173 acl.last = acl.first;
4174
4175 get_arg(arg, sizeof(arg), &p);
4176
4177 if (arg[0]) {
4178 if (resolve_host(&acl.last, arg) != 0) {
4179 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
4180 filename, line_num, arg);
4181 errors++;
4182 }
4183 }
4184
4185 if (!errors) {
4186 IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
4187 IPAddressACL **naclp = 0;
4188
4189 acl.next = 0;
4190 *nacl = acl;
4191
4192 if (stream)
4193 naclp = &stream->acl;
4194 else if (feed)
4195 naclp = &feed->acl;
4196 else {
4197 fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
4198 filename, line_num);
4199 errors++;
4200 }
4201
4202 if (naclp) {
4203 while (*naclp)
4204 naclp = &(*naclp)->next;
4205
4206 *naclp = nacl;
4207 }
4208 }
4209 } else if (!strcasecmp(cmd, "RTSPOption")) {
4210 get_arg(arg, sizeof(arg), &p);
4211 if (stream) {
4212 av_freep(&stream->rtsp_option);
4213 stream->rtsp_option = av_strdup(arg);
4214 }
4215 } else if (!strcasecmp(cmd, "MulticastAddress")) {
4216 get_arg(arg, sizeof(arg), &p);
4217 if (stream) {
4218 if (resolve_host(&stream->multicast_ip, arg) != 0) {
4219 fprintf(stderr, "%s:%d: Invalid host/IP address: %s\n",
4220 filename, line_num, arg);
4221 errors++;
4222 }
4223 stream->is_multicast = 1;
4224 stream->loop = 1; /* default is looping */
4225 }
4226 } else if (!strcasecmp(cmd, "MulticastPort")) {
4227 get_arg(arg, sizeof(arg), &p);
4228 if (stream)
4229 stream->multicast_port = atoi(arg);
4230 } else if (!strcasecmp(cmd, "MulticastTTL")) {
4231 get_arg(arg, sizeof(arg), &p);
4232 if (stream)
4233 stream->multicast_ttl = atoi(arg);
4234 } else if (!strcasecmp(cmd, "NoLoop")) {
4235 if (stream)
4236 stream->loop = 0;
4237 } else if (!strcasecmp(cmd, "</Stream>")) {
4238 if (!stream) {
4239 fprintf(stderr, "%s:%d: No corresponding <Stream> for </Stream>\n",
4240 filename, line_num);
4241 errors++;
4242 }
4243 if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm") != 0) {
4244 if (audio_id != CODEC_ID_NONE) {
4245 audio_enc.codec_type = CODEC_TYPE_AUDIO;
4246 audio_enc.codec_id = audio_id;
4247 add_codec(stream, &audio_enc);
4248 }
4249 if (video_id != CODEC_ID_NONE) {
4250 video_enc.codec_type = CODEC_TYPE_VIDEO;
4251 video_enc.codec_id = video_id;
4252 add_codec(stream, &video_enc);
4253 }
4254 }
4255 stream = NULL;
4256 } else if (!strcasecmp(cmd, "<Redirect")) {
4257 /*********************************************/
4258 char *q;
4259 if (stream || feed || redirect) {
4260 fprintf(stderr, "%s:%d: Already in a tag\n",
4261 filename, line_num);
4262 errors++;
4263 } else {
4264 redirect = av_mallocz(sizeof(FFStream));
4265 *last_stream = redirect;
4266 last_stream = &redirect->next;
4267
4268 get_arg(redirect->filename, sizeof(redirect->filename), &p);
4269 q = strrchr(redirect->filename, '>');
4270 if (*q)
4271 *q = '\0';
4272 redirect->stream_type = STREAM_TYPE_REDIRECT;
4273 }
4274 } else if (!strcasecmp(cmd, "URL")) {
4275 if (redirect)
4276 get_arg(redirect->feed_filename, sizeof(redirect->feed_filename), &p);
4277 } else if (!strcasecmp(cmd, "</Redirect>")) {
4278 if (!redirect) {
4279 fprintf(stderr, "%s:%d: No corresponding <Redirect> for </Redirect>\n",
4280 filename, line_num);
4281 errors++;
4282 }
4283 if (!redirect->feed_filename[0]) {
4284 fprintf(stderr, "%s:%d: No URL found for <Redirect>\n",
4285 filename, line_num);
4286 errors++;
4287 }
4288 redirect = NULL;
4289 } else if (!strcasecmp(cmd, "LoadModule")) {
4290 get_arg(arg, sizeof(arg), &p);
4291 #ifdef HAVE_DLOPEN
4292 load_module(arg);
4293 #else
4294 fprintf(stderr, "%s:%d: Module support not compiled into this version: '%s'\n",
4295 filename, line_num, arg);
4296 errors++;
4297 #endif
4298 } else {
4299 fprintf(stderr, "%s:%d: Incorrect keyword: '%s'\n",
4300 filename, line_num, cmd);
4301 errors++;
4302 }
4303 }
4304
4305 fclose(f);
4306 if (errors)
4307 return -1;
4308 else
4309 return 0;
4310 }
4311
4312 static void handle_child_exit(int sig)
4313 {
4314 pid_t pid;
4315 int status;
4316
4317 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
4318 FFStream *feed;
4319
4320 for (feed = first_feed; feed; feed = feed->next) {
4321 if (feed->pid == pid) {
4322 int uptime = time(0) - feed->pid_start;
4323
4324 feed->pid = 0;
4325 fprintf(stderr, "%s: Pid %d exited with status %d after %d seconds\n", feed->filename, pid, status, uptime);
4326
4327 if (uptime < 30)
4328 /* Turn off any more restarts */
4329 feed->child_argv = 0;
4330 }
4331 }
4332 }
4333
4334 need_to_start_children = 1;
4335 }
4336
4337 static void opt_debug()
4338 {
4339 ffserver_debug = 1;
4340 ffserver_daemon = 0;
4341 }
4342
4343 static void opt_show_help(void)
4344 {
4345 printf("usage: ffserver [options]\n"
4346 "Hyper fast multi format Audio/Video streaming server\n");
4347 printf("\n");
4348 show_help_options(options, "Main options:\n", 0, 0);
4349 }
4350
4351 static const OptionDef options[] = {
4352 { "h", OPT_EXIT, {(void*)opt_show_help}, "show help" },
4353 { "version", OPT_EXIT, {(void*)show_version}, "show version" },
4354 { "L", OPT_EXIT, {(void*)show_license}, "show license" },
4355 { "formats", OPT_EXIT, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },
4356 { "n", OPT_BOOL, {(void *)&no_launch }, "enable no-launch mode" },
4357 { "d", 0, {(void*)opt_debug}, "enable debug mode" },
4358 { "f", HAS_ARG | OPT_STRING, {(void*)&config_filename }, "use configfile instead of /etc/ffserver.conf", "configfile" },
4359 { NULL },
4360 };
4361
4362 int main(int argc, char **argv)
4363 {
4364 struct sigaction sigact;
4365
4366 av_register_all();
4367
4368 show_banner(program_name, program_birth_year);
4369
4370 config_filename = "/etc/ffserver.conf";
4371
4372 my_program_name = argv[0];
4373 my_program_dir = getcwd(0, 0);
4374 ffserver_daemon = 1;
4375
4376 parse_options(argc, argv, options, NULL);
4377
4378 putenv("http_proxy"); /* Kill the http_proxy */
4379
4380 av_init_random(av_gettime() + (getpid() << 16), &random_state);
4381
4382 /* address on which the server will handle HTTP connections */
4383 my_http_addr.sin_family = AF_INET;
4384 my_http_addr.sin_port = htons (8080);
4385 my_http_addr.sin_addr.s_addr = htonl (INADDR_ANY);
4386
4387 /* address on which the server will handle RTSP connections */
4388 my_rtsp_addr.sin_family = AF_INET;
4389 my_rtsp_addr.sin_port = htons (5454);
4390 my_rtsp_addr.sin_addr.s_addr = htonl (INADDR_ANY);
4391
4392 nb_max_connections = 5;
4393 max_bandwidth = 1000;
4394 first_stream = NULL;
4395 logfilename[0] = '\0';
4396
4397 memset(&sigact, 0, sizeof(sigact));
4398 sigact.sa_handler = handle_child_exit;
4399 sigact.sa_flags = SA_NOCLDSTOP | SA_RESTART;
4400 sigaction(SIGCHLD, &sigact, 0);
4401
4402 if (parse_ffconfig(config_filename) < 0) {
4403 fprintf(stderr, "Incorrect config file - exiting.\n");
4404 exit(1);
4405 }
4406
4407 build_file_streams();
4408
4409 build_feed_streams();
4410
4411 compute_bandwidth();
4412
4413 /* put the process in background and detach it from its TTY */
4414 if (ffserver_daemon) {
4415 int pid;
4416
4417 pid = fork();
4418 if (pid < 0) {
4419 perror("fork");
4420 exit(1);
4421 } else if (pid > 0) {
4422 /* parent : exit */
4423 exit(0);
4424 } else {
4425 /* child */
4426 setsid();
4427 chdir("/");
4428 close(0);
4429 open("/dev/null", O_RDWR);
4430 if (strcmp(logfilename, "-") != 0) {
4431 close(1);
4432 dup(0);
4433 }
4434 close(2);
4435 dup(0);
4436 }
4437 }
4438
4439 /* signal init */
4440 signal(SIGPIPE, SIG_IGN);
4441
4442 /* open log file if needed */
4443 if (logfilename[0] != '\0') {
4444 if (!strcmp(logfilename, "-"))
4445 logfile = stdout;
4446 else
4447 logfile = fopen(logfilename, "a");
4448 }
4449
4450 if (http_server() < 0) {
4451 fprintf(stderr, "Could not start server\n");
4452 exit(1);
4453 }
4454
4455 return 0;
4456 }
lucabe's unfinished and experimental patches for ffmpeg