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ffserver_config.c
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1 /*
2  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <float.h>
22 #include "libavutil/opt.h"
23 #include "libavutil/parseutils.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/pixdesc.h"
26 #include "libavutil/avassert.h"
27 
28 // FIXME those are internal headers, ffserver _really_ shouldn't use them
29 #include "libavformat/ffm.h"
30 
31 #include "cmdutils.h"
32 #include "ffserver_config.h"
33 
34 #define MAX_CHILD_ARGS 64
35 
36 static int ffserver_save_avoption(const char *opt, const char *arg, int type,
37  FFServerConfig *config);
38 static void vreport_config_error(const char *filename, int line_num,
39  int log_level, int *errors, const char *fmt,
40  va_list vl);
41 static void report_config_error(const char *filename, int line_num,
42  int log_level, int *errors, const char *fmt,
43  ...);
44 
45 #define ERROR(...) report_config_error(config->filename, config->line_num,\
46  AV_LOG_ERROR, &config->errors, __VA_ARGS__)
47 #define WARNING(...) report_config_error(config->filename, config->line_num,\
48  AV_LOG_WARNING, &config->warnings, __VA_ARGS__)
49 
50 /* FIXME: make ffserver work with IPv6 */
51 /* resolve host with also IP address parsing */
52 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
53 {
54 
55  if (!ff_inet_aton(hostname, sin_addr)) {
56 #if HAVE_GETADDRINFO
57  struct addrinfo *ai, *cur;
58  struct addrinfo hints = { 0 };
59  hints.ai_family = AF_INET;
60  if (getaddrinfo(hostname, NULL, &hints, &ai))
61  return -1;
62  /* getaddrinfo returns a linked list of addrinfo structs.
63  * Even if we set ai_family = AF_INET above, make sure
64  * that the returned one actually is of the correct type. */
65  for (cur = ai; cur; cur = cur->ai_next) {
66  if (cur->ai_family == AF_INET) {
67  *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
68  freeaddrinfo(ai);
69  return 0;
70  }
71  }
72  freeaddrinfo(ai);
73  return -1;
74 #else
75  struct hostent *hp;
76  hp = gethostbyname(hostname);
77  if (!hp)
78  return -1;
79  memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
80 #endif
81  }
82  return 0;
83 }
84 
85 void ffserver_get_arg(char *buf, int buf_size, const char **pp)
86 {
87  const char *p;
88  char *q;
89  int quote = 0;
90 
91  p = *pp;
92  q = buf;
93 
94  while (av_isspace(*p)) p++;
95 
96  if (*p == '\"' || *p == '\'')
97  quote = *p++;
98 
99  while (*p != '\0') {
100  if (quote && *p == quote || !quote && av_isspace(*p))
101  break;
102  if ((q - buf) < buf_size - 1)
103  *q++ = *p;
104  p++;
105  }
106 
107  *q = '\0';
108  if (quote && *p == quote)
109  p++;
110  *pp = p;
111 }
112 
113 void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,
114  FFServerIPAddressACL *ext_acl,
115  const char *p, const char *filename, int line_num)
116 {
117  char arg[1024];
118  FFServerIPAddressACL acl;
119  int errors = 0;
120 
121  ffserver_get_arg(arg, sizeof(arg), &p);
122  if (av_strcasecmp(arg, "allow") == 0)
123  acl.action = IP_ALLOW;
124  else if (av_strcasecmp(arg, "deny") == 0)
125  acl.action = IP_DENY;
126  else {
127  fprintf(stderr, "%s:%d: ACL action '%s' should be ALLOW or DENY.\n",
128  filename, line_num, arg);
129  errors++;
130  }
131 
132  ffserver_get_arg(arg, sizeof(arg), &p);
133 
134  if (resolve_host(&acl.first, arg)) {
135  fprintf(stderr,
136  "%s:%d: ACL refers to invalid host or IP address '%s'\n",
137  filename, line_num, arg);
138  errors++;
139  } else
140  acl.last = acl.first;
141 
142  ffserver_get_arg(arg, sizeof(arg), &p);
143 
144  if (arg[0]) {
145  if (resolve_host(&acl.last, arg)) {
146  fprintf(stderr,
147  "%s:%d: ACL refers to invalid host or IP address '%s'\n",
148  filename, line_num, arg);
149  errors++;
150  }
151  }
152 
153  if (!errors) {
154  FFServerIPAddressACL *nacl = av_mallocz(sizeof(*nacl));
155  FFServerIPAddressACL **naclp = 0;
156 
157  acl.next = 0;
158  *nacl = acl;
159 
160  if (stream)
161  naclp = &stream->acl;
162  else if (feed)
163  naclp = &feed->acl;
164  else if (ext_acl)
165  naclp = &ext_acl;
166  else {
167  fprintf(stderr, "%s:%d: ACL found not in <Stream> or <Feed>\n",
168  filename, line_num);
169  errors++;
170  }
171 
172  if (naclp) {
173  while (*naclp)
174  naclp = &(*naclp)->next;
175 
176  *naclp = nacl;
177  } else
178  av_free(nacl);
179  }
180 }
181 
182 /* add a codec and set the default parameters */
183 static void add_codec(FFServerStream *stream, AVCodecContext *av,
184  FFServerConfig *config)
185 {
186  AVStream *st;
187  AVDictionary **opts, *recommended = NULL;
188  char *enc_config;
189 
190  if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))
191  return;
192 
193  opts = av->codec_type == AVMEDIA_TYPE_AUDIO ?
194  &config->audio_opts : &config->video_opts;
195  av_dict_copy(&recommended, *opts, 0);
196  av_opt_set_dict2(av->priv_data, opts, AV_OPT_SEARCH_CHILDREN);
197  av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);
198 
199  if (av_dict_count(*opts))
200  av_log(NULL, AV_LOG_WARNING,
201  "Something is wrong, %d options are not set!\n",
202  av_dict_count(*opts));
203 
204  if (!config->stream_use_defaults) {
205  switch(av->codec_type) {
206  case AVMEDIA_TYPE_AUDIO:
207  if (av->bit_rate == 0)
208  report_config_error(config->filename, config->line_num,
209  AV_LOG_ERROR, &config->errors,
210  "audio bit rate is not set\n");
211  if (av->sample_rate == 0)
212  report_config_error(config->filename, config->line_num,
213  AV_LOG_ERROR, &config->errors,
214  "audio sample rate is not set\n");
215  break;
216  case AVMEDIA_TYPE_VIDEO:
217  if (av->width == 0 || av->height == 0)
218  report_config_error(config->filename, config->line_num,
219  AV_LOG_ERROR, &config->errors,
220  "video size is not set\n");
221  break;
222  default:
223  av_assert0(0);
224  }
225  goto done;
226  }
227 
228  /* stream_use_defaults = true */
229 
230  /* compute default parameters */
231  switch(av->codec_type) {
232  case AVMEDIA_TYPE_AUDIO:
233  if (!av_dict_get(recommended, "ab", NULL, 0)) {
234  av->bit_rate = 64000;
235  av_dict_set_int(&recommended, "ab", av->bit_rate, 0);
236  WARNING("Setting default value for audio bit rate = %d. "
237  "Use NoDefaults to disable it.\n",
238  av->bit_rate);
239  }
240  if (!av_dict_get(recommended, "ar", NULL, 0)) {
241  av->sample_rate = 22050;
242  av_dict_set_int(&recommended, "ar", av->sample_rate, 0);
243  WARNING("Setting default value for audio sample rate = %d. "
244  "Use NoDefaults to disable it.\n",
245  av->sample_rate);
246  }
247  if (!av_dict_get(recommended, "ac", NULL, 0)) {
248  av->channels = 1;
249  av_dict_set_int(&recommended, "ac", av->channels, 0);
250  WARNING("Setting default value for audio channel count = %d. "
251  "Use NoDefaults to disable it.\n",
252  av->channels);
253  }
254  break;
255  case AVMEDIA_TYPE_VIDEO:
256  if (!av_dict_get(recommended, "b", NULL, 0)) {
257  av->bit_rate = 64000;
258  av_dict_set_int(&recommended, "b", av->bit_rate, 0);
259  WARNING("Setting default value for video bit rate = %d. "
260  "Use NoDefaults to disable it.\n",
261  av->bit_rate);
262  }
263  if (!av_dict_get(recommended, "time_base", NULL, 0)){
264  av->time_base.den = 5;
265  av->time_base.num = 1;
266  av_dict_set(&recommended, "time_base", "1/5", 0);
267  WARNING("Setting default value for video frame rate = %d. "
268  "Use NoDefaults to disable it.\n",
269  av->time_base.den);
270  }
271  if (!av_dict_get(recommended, "video_size", NULL, 0)) {
272  av->width = 160;
273  av->height = 128;
274  av_dict_set(&recommended, "video_size", "160x128", 0);
275  WARNING("Setting default value for video size = %dx%d. "
276  "Use NoDefaults to disable it.\n",
277  av->width, av->height);
278  }
279  /* Bitrate tolerance is less for streaming */
280  if (!av_dict_get(recommended, "bt", NULL, 0)) {
281  av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
282  (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
283  av_dict_set_int(&recommended, "bt", av->bit_rate_tolerance, 0);
284  WARNING("Setting default value for video bit rate tolerance = %d. "
285  "Use NoDefaults to disable it.\n",
286  av->bit_rate_tolerance);
287  }
288 
289  if (!av_dict_get(recommended, "rc_eq", NULL, 0)) {
290  av->rc_eq = av_strdup("tex^qComp");
291  av_dict_set(&recommended, "rc_eq", "tex^qComp", 0);
292  WARNING("Setting default value for video rate control equation = "
293  "%s. Use NoDefaults to disable it.\n",
294  av->rc_eq);
295  }
296  if (!av_dict_get(recommended, "maxrate", NULL, 0)) {
297  av->rc_max_rate = av->bit_rate * 2;
298  av_dict_set_int(&recommended, "maxrate", av->rc_max_rate, 0);
299  WARNING("Setting default value for video max rate = %d. "
300  "Use NoDefaults to disable it.\n",
301  av->rc_max_rate);
302  }
303 
304  if (av->rc_max_rate && !av_dict_get(recommended, "bufsize", NULL, 0)) {
305  av->rc_buffer_size = av->rc_max_rate;
306  av_dict_set_int(&recommended, "bufsize", av->rc_buffer_size, 0);
307  WARNING("Setting default value for video buffer size = %d. "
308  "Use NoDefaults to disable it.\n",
309  av->rc_buffer_size);
310  }
311  break;
312  default:
313  abort();
314  }
315 
316 done:
317  st = av_mallocz(sizeof(AVStream));
318  if (!st)
319  return;
320  av_dict_get_string(recommended, &enc_config, '=', ',');
321  av_dict_free(&recommended);
322  av_stream_set_recommended_encoder_configuration(st, enc_config);
323  st->codec = av;
324  stream->streams[stream->nb_streams++] = st;
325 }
326 
327 static int ffserver_set_codec(AVCodecContext *ctx, const char *codec_name,
328  FFServerConfig *config)
329 {
330  int ret;
331  AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
332  if (!codec || codec->type != ctx->codec_type) {
333  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
334  &config->errors,
335  "Invalid codec name: '%s'\n", codec_name);
336  return 0;
337  }
338  if (ctx->codec_id == AV_CODEC_ID_NONE && !ctx->priv_data) {
339  if ((ret = avcodec_get_context_defaults3(ctx, codec)) < 0)
340  return ret;
341  ctx->codec = codec;
342  }
343  if (ctx->codec_id != codec->id)
344  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
345  &config->errors,
346  "Inconsistent configuration: trying to set '%s' "
347  "codec option, but '%s' codec is used previously\n",
348  codec_name, avcodec_get_name(ctx->codec_id));
349  return 0;
350 }
351 
352 static int ffserver_opt_preset(const char *arg, int type, FFServerConfig *config)
353 {
354  FILE *f=NULL;
355  char filename[1000], tmp[1000], tmp2[1000], line[1000];
356  int ret = 0;
357  AVCodecContext *avctx;
358  const AVCodec *codec;
359 
360  switch(type) {
361  case AV_OPT_FLAG_AUDIO_PARAM:
362  avctx = config->dummy_actx;
363  break;
364  case AV_OPT_FLAG_VIDEO_PARAM:
365  avctx = config->dummy_vctx;
366  break;
367  default:
368  av_assert0(0);
369  }
370  codec = avcodec_find_encoder(avctx->codec_id);
371 
372  if (!(f = get_preset_file(filename, sizeof(filename), arg, 0,
373  codec ? codec->name : NULL))) {
374  av_log(NULL, AV_LOG_ERROR, "File for preset '%s' not found\n", arg);
375  return AVERROR(EINVAL);
376  }
377 
378  while(!feof(f)){
379  int e= fscanf(f, "%999[^\n]\n", line) - 1;
380  if(line[0] == '#' && !e)
381  continue;
382  e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;
383  if(e){
384  av_log(NULL, AV_LOG_ERROR, "%s: Invalid syntax: '%s'\n", filename,
385  line);
386  ret = AVERROR(EINVAL);
387  break;
388  }
389  if (!strcmp(tmp, "acodec") && avctx->codec_type == AVMEDIA_TYPE_AUDIO ||
390  !strcmp(tmp, "vcodec") && avctx->codec_type == AVMEDIA_TYPE_VIDEO)
391  {
392  if (ffserver_set_codec(avctx, tmp2, config) < 0)
393  break;
394  } else if (!strcmp(tmp, "scodec")) {
395  av_log(NULL, AV_LOG_ERROR, "Subtitles preset found.\n");
396  ret = AVERROR(EINVAL);
397  break;
398  } else if (ffserver_save_avoption(tmp, tmp2, type, config) < 0)
399  break;
400  }
401 
402  fclose(f);
403 
404  return ret;
405 }
406 
407 static AVOutputFormat *ffserver_guess_format(const char *short_name,
408  const char *filename,
409  const char *mime_type)
410 {
411  AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
412 
413  if (fmt) {
414  AVOutputFormat *stream_fmt;
415  char stream_format_name[64];
416 
417  snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream",
418  fmt->name);
419  stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
420 
421  if (stream_fmt)
422  fmt = stream_fmt;
423  }
424 
425  return fmt;
426 }
427 
428 static void vreport_config_error(const char *filename, int line_num,
429  int log_level, int *errors, const char *fmt,
430  va_list vl)
431 {
432  av_log(NULL, log_level, "%s:%d: ", filename, line_num);
433  av_vlog(NULL, log_level, fmt, vl);
434  if (errors)
435  (*errors)++;
436 }
437 
438 static void report_config_error(const char *filename, int line_num,
439  int log_level, int *errors,
440  const char *fmt, ...)
441 {
442  va_list vl;
443  va_start(vl, fmt);
444  vreport_config_error(filename, line_num, log_level, errors, fmt, vl);
445  va_end(vl);
446 }
447 
448 static int ffserver_set_int_param(int *dest, const char *value, int factor,
449  int min, int max, FFServerConfig *config,
450  const char *error_msg, ...)
451 {
452  int tmp;
453  char *tailp;
454  if (!value || !value[0])
455  goto error;
456  errno = 0;
457  tmp = strtol(value, &tailp, 0);
458  if (tmp < min || tmp > max)
459  goto error;
460  if (factor) {
461  if (FFABS(tmp) > INT_MAX / FFABS(factor))
462  goto error;
463  tmp *= factor;
464  }
465  if (tailp[0] || errno)
466  goto error;
467  if (dest)
468  *dest = tmp;
469  return 0;
470  error:
471  if (config) {
472  va_list vl;
473  va_start(vl, error_msg);
474  vreport_config_error(config->filename, config->line_num, AV_LOG_ERROR,
475  &config->errors, error_msg, vl);
476  va_end(vl);
477  }
478  return AVERROR(EINVAL);
479 }
480 
481 static int ffserver_set_float_param(float *dest, const char *value,
482  float factor, float min, float max,
483  FFServerConfig *config,
484  const char *error_msg, ...)
485 {
486  double tmp;
487  char *tailp;
488  if (!value || !value[0])
489  goto error;
490  errno = 0;
491  tmp = strtod(value, &tailp);
492  if (tmp < min || tmp > max)
493  goto error;
494  if (factor)
495  tmp *= factor;
496  if (tailp[0] || errno)
497  goto error;
498  if (dest)
499  *dest = tmp;
500  return 0;
501  error:
502  if (config) {
503  va_list vl;
504  va_start(vl, error_msg);
505  vreport_config_error(config->filename, config->line_num, AV_LOG_ERROR,
506  &config->errors, error_msg, vl);
507  va_end(vl);
508  }
509  return AVERROR(EINVAL);
510 }
511 
512 static int ffserver_save_avoption(const char *opt, const char *arg, int type,
513  FFServerConfig *config)
514 {
515  static int hinted = 0;
516  int ret = 0;
517  AVDictionaryEntry *e;
518  const AVOption *o = NULL;
519  const char *option = NULL;
520  const char *codec_name = NULL;
521  char buff[1024];
522  AVCodecContext *ctx;
523  AVDictionary **dict;
524  enum AVCodecID guessed_codec_id;
525 
526  switch (type) {
527  case AV_OPT_FLAG_VIDEO_PARAM:
528  ctx = config->dummy_vctx;
529  dict = &config->video_opts;
530  guessed_codec_id = config->guessed_video_codec_id != AV_CODEC_ID_NONE ?
531  config->guessed_video_codec_id : AV_CODEC_ID_H264;
532  break;
533  case AV_OPT_FLAG_AUDIO_PARAM:
534  ctx = config->dummy_actx;
535  dict = &config->audio_opts;
536  guessed_codec_id = config->guessed_audio_codec_id != AV_CODEC_ID_NONE ?
537  config->guessed_audio_codec_id : AV_CODEC_ID_AAC;
538  break;
539  default:
540  av_assert0(0);
541  }
542 
543  if (strchr(opt, ':')) {
544  //explicit private option
545  snprintf(buff, sizeof(buff), "%s", opt);
546  codec_name = buff;
547  if(!(option = strchr(buff, ':'))){
548  report_config_error(config->filename, config->line_num,
549  AV_LOG_ERROR, &config->errors,
550  "Syntax error. Unmatched ':'\n");
551  return -1;
552 
553  }
554  buff[option - buff] = '\0';
555  option++;
556  if ((ret = ffserver_set_codec(ctx, codec_name, config)) < 0)
557  return ret;
558  if (!ctx->codec || !ctx->priv_data)
559  return -1;
560  } else {
561  option = opt;
562  }
563 
564  o = av_opt_find(ctx, option, NULL, type | AV_OPT_FLAG_ENCODING_PARAM,
565  AV_OPT_SEARCH_CHILDREN);
566  if (!o &&
567  (!strcmp(option, "time_base") || !strcmp(option, "pixel_format") ||
568  !strcmp(option, "video_size") || !strcmp(option, "codec_tag")))
569  o = av_opt_find(ctx, option, NULL, 0, 0);
570  if (!o) {
571  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
572  &config->errors, "Option not found: '%s'\n", opt);
573  if (!hinted && ctx->codec_id == AV_CODEC_ID_NONE) {
574  hinted = 1;
575  report_config_error(config->filename, config->line_num,
576  AV_LOG_ERROR, NULL, "If '%s' is a codec private"
577  "option, then prefix it with codec name, for "
578  "example '%s:%s %s' or define codec earlier.\n",
579  opt, avcodec_get_name(guessed_codec_id) ,opt,
580  arg);
581  }
582  } else if ((ret = av_opt_set(ctx, option, arg, AV_OPT_SEARCH_CHILDREN)) < 0) {
583  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
584  &config->errors, "Invalid value for option %s (%s): %s\n", opt,
585  arg, av_err2str(ret));
586  } else if ((e = av_dict_get(*dict, option, NULL, 0))) {
587  if ((o->type == AV_OPT_TYPE_FLAGS) && arg &&
588  (arg[0] == '+' || arg[0] == '-'))
589  return av_dict_set(dict, option, arg, AV_DICT_APPEND);
590  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
591  &config->errors, "Redeclaring value of option '%s'."
592  "Previous value was: '%s'.\n", opt, e->value);
593  } else if (av_dict_set(dict, option, arg, 0) < 0) {
594  return AVERROR(ENOMEM);
595  }
596  return 0;
597 }
598 
599 static int ffserver_save_avoption_int(const char *opt, int64_t arg,
600  int type, FFServerConfig *config)
601 {
602  char buf[22];
603  snprintf(buf, sizeof(buf), "%"PRId64, arg);
604  return ffserver_save_avoption(opt, buf, type, config);
605 }
606 
607 static int ffserver_parse_config_global(FFServerConfig *config, const char *cmd,
608  const char **p)
609 {
610  int val;
611  char arg[1024];
612  if (!av_strcasecmp(cmd, "Port") || !av_strcasecmp(cmd, "HTTPPort")) {
613  if (!av_strcasecmp(cmd, "Port"))
614  WARNING("Port option is deprecated. Use HTTPPort instead.\n");
615  ffserver_get_arg(arg, sizeof(arg), p);
616  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
617  "Invalid port: %s\n", arg);
618  if (val < 1024)
619  WARNING("Trying to use IETF assigned system port: '%d'\n", val);
620  config->http_addr.sin_port = htons(val);
621  } else if (!av_strcasecmp(cmd, "HTTPBindAddress") ||
622  !av_strcasecmp(cmd, "BindAddress")) {
623  if (!av_strcasecmp(cmd, "BindAddress"))
624  WARNING("BindAddress option is deprecated. Use HTTPBindAddress "
625  "instead.\n");
626  ffserver_get_arg(arg, sizeof(arg), p);
627  if (resolve_host(&config->http_addr.sin_addr, arg))
628  ERROR("Invalid host/IP address: '%s'\n", arg);
629  } else if (!av_strcasecmp(cmd, "NoDaemon")) {
630  WARNING("NoDaemon option has no effect. You should remove it.\n");
631  } else if (!av_strcasecmp(cmd, "RTSPPort")) {
632  ffserver_get_arg(arg, sizeof(arg), p);
633  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
634  "Invalid port: %s\n", arg);
635  config->rtsp_addr.sin_port = htons(val);
636  } else if (!av_strcasecmp(cmd, "RTSPBindAddress")) {
637  ffserver_get_arg(arg, sizeof(arg), p);
638  if (resolve_host(&config->rtsp_addr.sin_addr, arg))
639  ERROR("Invalid host/IP address: %s\n", arg);
640  } else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) {
641  ffserver_get_arg(arg, sizeof(arg), p);
642  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
643  "Invalid MaxHTTPConnections: %s\n", arg);
644  config->nb_max_http_connections = val;
645  if (config->nb_max_connections > config->nb_max_http_connections) {
646  ERROR("Inconsistent configuration: MaxClients(%d) > "
647  "MaxHTTPConnections(%d)\n", config->nb_max_connections,
648  config->nb_max_http_connections);
649  }
650  } else if (!av_strcasecmp(cmd, "MaxClients")) {
651  ffserver_get_arg(arg, sizeof(arg), p);
652  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
653  "Invalid MaxClients: '%s'\n", arg);
654  config->nb_max_connections = val;
655  if (config->nb_max_connections > config->nb_max_http_connections) {
656  ERROR("Inconsistent configuration: MaxClients(%d) > "
657  "MaxHTTPConnections(%d)\n", config->nb_max_connections,
658  config->nb_max_http_connections);
659  }
660  } else if (!av_strcasecmp(cmd, "MaxBandwidth")) {
661  int64_t llval;
662  char *tailp;
663  ffserver_get_arg(arg, sizeof(arg), p);
664  errno = 0;
665  llval = strtoll(arg, &tailp, 10);
666  if (llval < 10 || llval > 10000000 || tailp[0] || errno)
667  ERROR("Invalid MaxBandwidth: '%s'\n", arg);
668  else
669  config->max_bandwidth = llval;
670  } else if (!av_strcasecmp(cmd, "CustomLog")) {
671  if (!config->debug) {
672  ffserver_get_arg(config->logfilename, sizeof(config->logfilename),
673  p);
674  }
675  } else if (!av_strcasecmp(cmd, "LoadModule")) {
676  ERROR("Loadable modules are no longer supported\n");
677  } else if (!av_strcasecmp(cmd, "NoDefaults")) {
678  config->use_defaults = 0;
679  } else if (!av_strcasecmp(cmd, "UseDefaults")) {
680  config->use_defaults = 1;
681  } else
682  ERROR("Incorrect keyword: '%s'\n", cmd);
683  return 0;
684 }
685 
686 static int ffserver_parse_config_feed(FFServerConfig *config, const char *cmd, const char **p,
687  FFServerStream **pfeed)
688 {
689  FFServerStream *feed;
690  char arg[1024];
691  av_assert0(pfeed);
692  feed = *pfeed;
693  if (!av_strcasecmp(cmd, "<Feed")) {
694  char *q;
695  FFServerStream *s;
696  feed = av_mallocz(sizeof(FFServerStream));
697  if (!feed)
698  return AVERROR(ENOMEM);
699  ffserver_get_arg(feed->filename, sizeof(feed->filename), p);
700  q = strrchr(feed->filename, '>');
701  if (*q)
702  *q = '\0';
703 
704  for (s = config->first_feed; s; s = s->next) {
705  if (!strcmp(feed->filename, s->filename))
706  ERROR("Feed '%s' already registered\n", s->filename);
707  }
708 
709  feed->fmt = av_guess_format("ffm", NULL, NULL);
710  /* default feed file */
711  snprintf(feed->feed_filename, sizeof(feed->feed_filename),
712  "/tmp/%s.ffm", feed->filename);
713  feed->feed_max_size = 5 * 1024 * 1024;
714  feed->is_feed = 1;
715  feed->feed = feed; /* self feeding :-) */
716  *pfeed = feed;
717  return 0;
718  }
719  av_assert0(feed);
720  if (!av_strcasecmp(cmd, "Launch")) {
721  int i;
722 
723  feed->child_argv = av_mallocz_array(MAX_CHILD_ARGS, sizeof(char *));
724  if (!feed->child_argv)
725  return AVERROR(ENOMEM);
726  for (i = 0; i < MAX_CHILD_ARGS - 2; i++) {
727  ffserver_get_arg(arg, sizeof(arg), p);
728  if (!arg[0])
729  break;
730 
731  feed->child_argv[i] = av_strdup(arg);
732  if (!feed->child_argv[i])
733  return AVERROR(ENOMEM);
734  }
735 
736  feed->child_argv[i] =
737  av_asprintf("http://%s:%d/%s",
738  (config->http_addr.sin_addr.s_addr == INADDR_ANY) ?
739  "127.0.0.1" : inet_ntoa(config->http_addr.sin_addr),
740  ntohs(config->http_addr.sin_port), feed->filename);
741  if (!feed->child_argv[i])
742  return AVERROR(ENOMEM);
743  } else if (!av_strcasecmp(cmd, "ACL")) {
744  ffserver_parse_acl_row(NULL, feed, NULL, *p, config->filename,
745  config->line_num);
746  } else if (!av_strcasecmp(cmd, "File") ||
747  !av_strcasecmp(cmd, "ReadOnlyFile")) {
748  ffserver_get_arg(feed->feed_filename, sizeof(feed->feed_filename), p);
749  feed->readonly = !av_strcasecmp(cmd, "ReadOnlyFile");
750  } else if (!av_strcasecmp(cmd, "Truncate")) {
751  ffserver_get_arg(arg, sizeof(arg), p);
752  /* assume Truncate is true in case no argument is specified */
753  if (!arg[0]) {
754  feed->truncate = 1;
755  } else {
756  WARNING("Truncate N syntax in configuration file is deprecated. "
757  "Use Truncate alone with no arguments.\n");
758  feed->truncate = strtod(arg, NULL);
759  }
760  } else if (!av_strcasecmp(cmd, "FileMaxSize")) {
761  char *p1;
762  double fsize;
763 
764  ffserver_get_arg(arg, sizeof(arg), p);
765  p1 = arg;
766  fsize = strtod(p1, &p1);
767  switch(av_toupper(*p1)) {
768  case 'K':
769  fsize *= 1024;
770  break;
771  case 'M':
772  fsize *= 1024 * 1024;
773  break;
774  case 'G':
775  fsize *= 1024 * 1024 * 1024;
776  break;
777  default:
778  ERROR("Invalid file size: '%s'\n", arg);
779  break;
780  }
781  feed->feed_max_size = (int64_t)fsize;
782  if (feed->feed_max_size < FFM_PACKET_SIZE*4) {
783  ERROR("Feed max file size is too small. Must be at least %d.\n",
784  FFM_PACKET_SIZE*4);
785  }
786  } else if (!av_strcasecmp(cmd, "</Feed>")) {
787  *pfeed = NULL;
788  } else {
789  ERROR("Invalid entry '%s' inside <Feed></Feed>\n", cmd);
790  }
791  return 0;
792 }
793 
794 static int ffserver_parse_config_stream(FFServerConfig *config, const char *cmd, const char **p,
795  FFServerStream **pstream)
796 {
797  char arg[1024], arg2[1024];
798  FFServerStream *stream;
799  int val;
800 
801  av_assert0(pstream);
802  stream = *pstream;
803 
804  if (!av_strcasecmp(cmd, "<Stream")) {
805  char *q;
806  FFServerStream *s;
807  stream = av_mallocz(sizeof(FFServerStream));
808  if (!stream)
809  return AVERROR(ENOMEM);
810  config->dummy_actx = avcodec_alloc_context3(NULL);
811  config->dummy_vctx = avcodec_alloc_context3(NULL);
812  if (!config->dummy_vctx || !config->dummy_actx) {
813  av_free(stream);
814  avcodec_free_context(&config->dummy_vctx);
815  avcodec_free_context(&config->dummy_actx);
816  return AVERROR(ENOMEM);
817  }
818  config->dummy_actx->codec_type = AVMEDIA_TYPE_AUDIO;
819  config->dummy_vctx->codec_type = AVMEDIA_TYPE_VIDEO;
820  ffserver_get_arg(stream->filename, sizeof(stream->filename), p);
821  q = strrchr(stream->filename, '>');
822  if (q)
823  *q = '\0';
824 
825  for (s = config->first_stream; s; s = s->next) {
826  if (!strcmp(stream->filename, s->filename))
827  ERROR("Stream '%s' already registered\n", s->filename);
828  }
829 
830  stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL);
831  if (stream->fmt) {
832  config->guessed_audio_codec_id = stream->fmt->audio_codec;
833  config->guessed_video_codec_id = stream->fmt->video_codec;
834  } else {
835  config->guessed_audio_codec_id = AV_CODEC_ID_NONE;
836  config->guessed_video_codec_id = AV_CODEC_ID_NONE;
837  }
838  config->stream_use_defaults = config->use_defaults;
839  *pstream = stream;
840  return 0;
841  }
842  av_assert0(stream);
843  if (!av_strcasecmp(cmd, "Feed")) {
844  FFServerStream *sfeed;
845  ffserver_get_arg(arg, sizeof(arg), p);
846  sfeed = config->first_feed;
847  while (sfeed) {
848  if (!strcmp(sfeed->filename, arg))
849  break;
850  sfeed = sfeed->next_feed;
851  }
852  if (!sfeed)
853  ERROR("Feed with name '%s' for stream '%s' is not defined\n", arg,
854  stream->filename);
855  else
856  stream->feed = sfeed;
857  } else if (!av_strcasecmp(cmd, "Format")) {
858  ffserver_get_arg(arg, sizeof(arg), p);
859  if (!strcmp(arg, "status")) {
860  stream->stream_type = STREAM_TYPE_STATUS;
861  stream->fmt = NULL;
862  } else {
863  stream->stream_type = STREAM_TYPE_LIVE;
864  /* JPEG cannot be used here, so use single frame MJPEG */
865  if (!strcmp(arg, "jpeg"))
866  strcpy(arg, "mjpeg");
867  stream->fmt = ffserver_guess_format(arg, NULL, NULL);
868  if (!stream->fmt)
869  ERROR("Unknown Format: '%s'\n", arg);
870  }
871  if (stream->fmt) {
872  config->guessed_audio_codec_id = stream->fmt->audio_codec;
873  config->guessed_video_codec_id = stream->fmt->video_codec;
874  }
875  } else if (!av_strcasecmp(cmd, "InputFormat")) {
876  ffserver_get_arg(arg, sizeof(arg), p);
877  stream->ifmt = av_find_input_format(arg);
878  if (!stream->ifmt)
879  ERROR("Unknown input format: '%s'\n", arg);
880  } else if (!av_strcasecmp(cmd, "FaviconURL")) {
881  if (stream->stream_type == STREAM_TYPE_STATUS)
882  ffserver_get_arg(stream->feed_filename,
883  sizeof(stream->feed_filename), p);
884  else
885  ERROR("FaviconURL only permitted for status streams\n");
886  } else if (!av_strcasecmp(cmd, "Author") ||
887  !av_strcasecmp(cmd, "Comment") ||
888  !av_strcasecmp(cmd, "Copyright") ||
889  !av_strcasecmp(cmd, "Title")) {
890  char key[32];
891  int i;
892  ffserver_get_arg(arg, sizeof(arg), p);
893  for (i = 0; i < strlen(cmd); i++)
894  key[i] = av_tolower(cmd[i]);
895  key[i] = 0;
896  WARNING("Deprecated '%s' option in configuration file. Use "
897  "'Metadata %s VALUE' instead.\n", cmd, key);
898  if (av_dict_set(&stream->metadata, key, arg, 0) < 0)
899  goto nomem;
900  } else if (!av_strcasecmp(cmd, "Metadata")) {
901  ffserver_get_arg(arg, sizeof(arg), p);
902  ffserver_get_arg(arg2, sizeof(arg2), p);
903  if (av_dict_set(&stream->metadata, arg, arg2, 0) < 0)
904  goto nomem;
905  } else if (!av_strcasecmp(cmd, "Preroll")) {
906  ffserver_get_arg(arg, sizeof(arg), p);
907  stream->prebuffer = atof(arg) * 1000;
908  } else if (!av_strcasecmp(cmd, "StartSendOnKey")) {
909  stream->send_on_key = 1;
910  } else if (!av_strcasecmp(cmd, "AudioCodec")) {
911  ffserver_get_arg(arg, sizeof(arg), p);
912  ffserver_set_codec(config->dummy_actx, arg, config);
913  } else if (!av_strcasecmp(cmd, "VideoCodec")) {
914  ffserver_get_arg(arg, sizeof(arg), p);
915  ffserver_set_codec(config->dummy_vctx, arg, config);
916  } else if (!av_strcasecmp(cmd, "MaxTime")) {
917  ffserver_get_arg(arg, sizeof(arg), p);
918  stream->max_time = atof(arg) * 1000;
919  } else if (!av_strcasecmp(cmd, "AudioBitRate")) {
920  float f;
921  ffserver_get_arg(arg, sizeof(arg), p);
922  ffserver_set_float_param(&f, arg, 1000, -FLT_MAX, FLT_MAX, config,
923  "Invalid %s: '%s'\n", cmd, arg);
924  if (ffserver_save_avoption_int("ab", (int64_t)lrintf(f),
925  AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
926  goto nomem;
927  } else if (!av_strcasecmp(cmd, "AudioChannels")) {
928  ffserver_get_arg(arg, sizeof(arg), p);
929  if (ffserver_save_avoption("ac", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
930  goto nomem;
931  } else if (!av_strcasecmp(cmd, "AudioSampleRate")) {
932  ffserver_get_arg(arg, sizeof(arg), p);
933  if (ffserver_save_avoption("ar", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
934  goto nomem;
935  } else if (!av_strcasecmp(cmd, "VideoBitRateRange")) {
936  int minrate, maxrate;
937  char *dash;
938  ffserver_get_arg(arg, sizeof(arg), p);
939  dash = strchr(arg, '-');
940  if (dash) {
941  *dash = '\0';
942  dash++;
943  if (ffserver_set_int_param(&minrate, arg, 1000, 0, INT_MAX, config, "Invalid %s: '%s'", cmd, arg) >= 0 &&
944  ffserver_set_int_param(&maxrate, dash, 1000, 0, INT_MAX, config, "Invalid %s: '%s'", cmd, arg) >= 0) {
945  if (ffserver_save_avoption_int("minrate", minrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||
946  ffserver_save_avoption_int("maxrate", maxrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
947  goto nomem;
948  }
949  } else
950  ERROR("Incorrect format for VideoBitRateRange. It should be "
951  "<min>-<max>: '%s'.\n", arg);
952  } else if (!av_strcasecmp(cmd, "Debug")) {
953  ffserver_get_arg(arg, sizeof(arg), p);
954  if (ffserver_save_avoption("debug", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||
955  ffserver_save_avoption("debug", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
956  goto nomem;
957  } else if (!av_strcasecmp(cmd, "Strict")) {
958  ffserver_get_arg(arg, sizeof(arg), p);
959  if (ffserver_save_avoption("strict", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||
960  ffserver_save_avoption("strict", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
961  goto nomem;
962  } else if (!av_strcasecmp(cmd, "VideoBufferSize")) {
963  ffserver_get_arg(arg, sizeof(arg), p);
964  ffserver_set_int_param(&val, arg, 8*1024, 0, INT_MAX, config,
965  "Invalid %s: '%s'", cmd, arg);
966  if (ffserver_save_avoption_int("bufsize", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
967  goto nomem;
968  } else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) {
969  ffserver_get_arg(arg, sizeof(arg), p);
970  ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,
971  "Invalid %s: '%s'", cmd, arg);
972  if (ffserver_save_avoption_int("bt", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
973  goto nomem;
974  } else if (!av_strcasecmp(cmd, "VideoBitRate")) {
975  ffserver_get_arg(arg, sizeof(arg), p);
976  ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,
977  "Invalid %s: '%s'", cmd, arg);
978  if (ffserver_save_avoption_int("b", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
979  goto nomem;
980  } else if (!av_strcasecmp(cmd, "VideoSize")) {
981  int ret, w, h;
982  ffserver_get_arg(arg, sizeof(arg), p);
983  ret = av_parse_video_size(&w, &h, arg);
984  if (ret < 0)
985  ERROR("Invalid video size '%s'\n", arg);
986  else {
987  if (w % 2 || h % 2)
988  WARNING("Image size is not a multiple of 2\n");
989  if (ffserver_save_avoption("video_size", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
990  goto nomem;
991  }
992  } else if (!av_strcasecmp(cmd, "VideoFrameRate")) {
993  ffserver_get_arg(&arg[2], sizeof(arg) - 2, p);
994  arg[0] = '1'; arg[1] = '/';
995  if (ffserver_save_avoption("time_base", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
996  goto nomem;
997  } else if (!av_strcasecmp(cmd, "PixelFormat")) {
998  enum AVPixelFormat pix_fmt;
999  ffserver_get_arg(arg, sizeof(arg), p);
1000  pix_fmt = av_get_pix_fmt(arg);
1001  if (pix_fmt == AV_PIX_FMT_NONE)
1002  ERROR("Unknown pixel format: '%s'\n", arg);
1003  else if (ffserver_save_avoption("pixel_format", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1004  goto nomem;
1005  } else if (!av_strcasecmp(cmd, "VideoGopSize")) {
1006  ffserver_get_arg(arg, sizeof(arg), p);
1007  if (ffserver_save_avoption("g", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1008  goto nomem;
1009  } else if (!av_strcasecmp(cmd, "VideoIntraOnly")) {
1010  if (ffserver_save_avoption("g", "1", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1011  goto nomem;
1012  } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {
1013  if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1014  goto nomem;
1015  } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {
1016  if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 || //FIXME remove
1017  ffserver_save_avoption("flags", "+mv4", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1018  goto nomem;
1019  } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||
1020  !av_strcasecmp(cmd, "AVOptionAudio")) {
1021  int ret;
1022  ffserver_get_arg(arg, sizeof(arg), p);
1023  ffserver_get_arg(arg2, sizeof(arg2), p);
1024  if (!av_strcasecmp(cmd, "AVOptionVideo"))
1025  ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM,
1026  config);
1027  else
1028  ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM,
1029  config);
1030  if (ret < 0)
1031  goto nomem;
1032  } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||
1033  !av_strcasecmp(cmd, "AVPresetAudio")) {
1034  ffserver_get_arg(arg, sizeof(arg), p);
1035  if (!av_strcasecmp(cmd, "AVPresetVideo"))
1036  ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);
1037  else
1038  ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);
1039  } else if (!av_strcasecmp(cmd, "VideoTag")) {
1040  ffserver_get_arg(arg, sizeof(arg), p);
1041  if (strlen(arg) == 4 &&
1042  ffserver_save_avoption_int("codec_tag",
1043  MKTAG(arg[0], arg[1], arg[2], arg[3]),
1044  AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1045  goto nomem;
1046  } else if (!av_strcasecmp(cmd, "BitExact")) {
1047  if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1048  goto nomem;
1049  } else if (!av_strcasecmp(cmd, "DctFastint")) {
1050  if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1051  goto nomem;
1052  } else if (!av_strcasecmp(cmd, "IdctSimple")) {
1053  if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1054  goto nomem;
1055  } else if (!av_strcasecmp(cmd, "Qscale")) {
1056  ffserver_get_arg(arg, sizeof(arg), p);
1057  ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,
1058  "Invalid Qscale: '%s'\n", arg);
1059  if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||
1060  ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,
1061  AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1062  goto nomem;
1063  } else if (!av_strcasecmp(cmd, "VideoQDiff")) {
1064  ffserver_get_arg(arg, sizeof(arg), p);
1065  if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1066  goto nomem;
1067  } else if (!av_strcasecmp(cmd, "VideoQMax")) {
1068  ffserver_get_arg(arg, sizeof(arg), p);
1069  if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1070  goto nomem;
1071  } else if (!av_strcasecmp(cmd, "VideoQMin")) {
1072  ffserver_get_arg(arg, sizeof(arg), p);
1073  if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1074  goto nomem;
1075  } else if (!av_strcasecmp(cmd, "LumiMask")) {
1076  ffserver_get_arg(arg, sizeof(arg), p);
1077  if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1078  goto nomem;
1079  } else if (!av_strcasecmp(cmd, "DarkMask")) {
1080  ffserver_get_arg(arg, sizeof(arg), p);
1081  if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1082  goto nomem;
1083  } else if (!av_strcasecmp(cmd, "NoVideo")) {
1084  config->no_video = 1;
1085  } else if (!av_strcasecmp(cmd, "NoAudio")) {
1086  config->no_audio = 1;
1087  } else if (!av_strcasecmp(cmd, "ACL")) {
1088  ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,
1089  config->line_num);
1090  } else if (!av_strcasecmp(cmd, "DynamicACL")) {
1091  ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);
1092  } else if (!av_strcasecmp(cmd, "RTSPOption")) {
1093  ffserver_get_arg(arg, sizeof(arg), p);
1094  av_freep(&stream->rtsp_option);
1095  stream->rtsp_option = av_strdup(arg);
1096  } else if (!av_strcasecmp(cmd, "MulticastAddress")) {
1097  ffserver_get_arg(arg, sizeof(arg), p);
1098  if (resolve_host(&stream->multicast_ip, arg))
1099  ERROR("Invalid host/IP address: '%s'\n", arg);
1100  stream->is_multicast = 1;
1101  stream->loop = 1; /* default is looping */
1102  } else if (!av_strcasecmp(cmd, "MulticastPort")) {
1103  ffserver_get_arg(arg, sizeof(arg), p);
1104  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
1105  "Invalid MulticastPort: '%s'\n", arg);
1106  stream->multicast_port = val;
1107  } else if (!av_strcasecmp(cmd, "MulticastTTL")) {
1108  ffserver_get_arg(arg, sizeof(arg), p);
1109  ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,
1110  "Invalid MulticastTTL: '%s'\n", arg);
1111  stream->multicast_ttl = val;
1112  } else if (!av_strcasecmp(cmd, "NoLoop")) {
1113  stream->loop = 0;
1114  } else if (!av_strcasecmp(cmd, "</Stream>")) {
1115  config->stream_use_defaults &= 1;
1116  if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {
1117  if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)
1118  config->dummy_actx->codec_id = config->guessed_audio_codec_id;
1119  if (!config->no_audio &&
1120  config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {
1121  AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));
1122  add_codec(stream, audio_enc, config);
1123  }
1124  if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)
1125  config->dummy_vctx->codec_id = config->guessed_video_codec_id;
1126  if (!config->no_video &&
1127  config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {
1128  AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));
1129  add_codec(stream, video_enc, config);
1130  }
1131  }
1132  av_dict_free(&config->video_opts);
1133  av_dict_free(&config->audio_opts);
1134  avcodec_free_context(&config->dummy_vctx);
1135  avcodec_free_context(&config->dummy_actx);
1136  *pstream = NULL;
1137  } else if (!av_strcasecmp(cmd, "File") ||
1138  !av_strcasecmp(cmd, "ReadOnlyFile")) {
1139  ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),
1140  p);
1141  } else if (!av_strcasecmp(cmd, "UseDefaults")) {
1142  if (config->stream_use_defaults > 1)
1143  WARNING("Multiple UseDefaults/NoDefaults entries.\n");
1144  config->stream_use_defaults = 3;
1145  } else if (!av_strcasecmp(cmd, "NoDefaults")) {
1146  if (config->stream_use_defaults > 1)
1147  WARNING("Multiple UseDefaults/NoDefaults entries.\n");
1148  config->stream_use_defaults = 2;
1149  } else {
1150  ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);
1151  }
1152  return 0;
1153  nomem:
1154  av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");
1155  av_dict_free(&config->video_opts);
1156  av_dict_free(&config->audio_opts);
1157  avcodec_free_context(&config->dummy_vctx);
1158  avcodec_free_context(&config->dummy_actx);
1159  return AVERROR(ENOMEM);
1160 }
1161 
1162 static int ffserver_parse_config_redirect(FFServerConfig *config,
1163  const char *cmd, const char **p,
1164  FFServerStream **predirect)
1165 {
1166  FFServerStream *redirect;
1167  av_assert0(predirect);
1168  redirect = *predirect;
1169 
1170  if (!av_strcasecmp(cmd, "<Redirect")) {
1171  char *q;
1172  redirect = av_mallocz(sizeof(FFServerStream));
1173  if (!redirect)
1174  return AVERROR(ENOMEM);
1175 
1176  ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);
1177  q = strrchr(redirect->filename, '>');
1178  if (*q)
1179  *q = '\0';
1180  redirect->stream_type = STREAM_TYPE_REDIRECT;
1181  *predirect = redirect;
1182  return 0;
1183  }
1184  av_assert0(redirect);
1185  if (!av_strcasecmp(cmd, "URL")) {
1186  ffserver_get_arg(redirect->feed_filename,
1187  sizeof(redirect->feed_filename), p);
1188  } else if (!av_strcasecmp(cmd, "</Redirect>")) {
1189  if (!redirect->feed_filename[0])
1190  ERROR("No URL found for <Redirect>\n");
1191  *predirect = NULL;
1192  } else {
1193  ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);
1194  }
1195  return 0;
1196 }
1197 
1198 int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)
1199 {
1200  FILE *f;
1201  char line[1024];
1202  char cmd[64];
1203  const char *p;
1204  FFServerStream **last_stream, *stream = NULL, *redirect = NULL;
1205  FFServerStream **last_feed, *feed = NULL;
1206  int ret = 0;
1207 
1208  av_assert0(config);
1209 
1210  f = fopen(filename, "r");
1211  if (!f) {
1212  ret = AVERROR(errno);
1213  av_log(NULL, AV_LOG_ERROR,
1214  "Could not open the configuration file '%s'\n", filename);
1215  return ret;
1216  }
1217 
1218  config->first_stream = NULL;
1219  config->first_feed = NULL;
1220  config->errors = config->warnings = 0;
1221 
1222  last_stream = &config->first_stream;
1223  last_feed = &config->first_feed;
1224 
1225  config->line_num = 0;
1226  while (fgets(line, sizeof(line), f) != NULL) {
1227  config->line_num++;
1228  p = line;
1229  while (av_isspace(*p))
1230  p++;
1231  if (*p == '\0' || *p == '#')
1232  continue;
1233 
1234  ffserver_get_arg(cmd, sizeof(cmd), &p);
1235 
1236  if (feed || !av_strcasecmp(cmd, "<Feed")) {
1237  int opening = !av_strcasecmp(cmd, "<Feed");
1238  if (opening && (stream || feed || redirect)) {
1239  ERROR("Already in a tag\n");
1240  } else {
1241  ret = ffserver_parse_config_feed(config, cmd, &p, &feed);
1242  if (ret < 0)
1243  break;
1244  if (opening) {
1245  /* add in stream & feed list */
1246  *last_stream = feed;
1247  *last_feed = feed;
1248  last_stream = &feed->next;
1249  last_feed = &feed->next_feed;
1250  }
1251  }
1252  } else if (stream || !av_strcasecmp(cmd, "<Stream")) {
1253  int opening = !av_strcasecmp(cmd, "<Stream");
1254  if (opening && (stream || feed || redirect)) {
1255  ERROR("Already in a tag\n");
1256  } else {
1257  ret = ffserver_parse_config_stream(config, cmd, &p, &stream);
1258  if (ret < 0)
1259  break;
1260  if (opening) {
1261  /* add in stream list */
1262  *last_stream = stream;
1263  last_stream = &stream->next;
1264  }
1265  }
1266  } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {
1267  int opening = !av_strcasecmp(cmd, "<Redirect");
1268  if (opening && (stream || feed || redirect))
1269  ERROR("Already in a tag\n");
1270  else {
1271  ret = ffserver_parse_config_redirect(config, cmd, &p,
1272  &redirect);
1273  if (ret < 0)
1274  break;
1275  if (opening) {
1276  /* add in stream list */
1277  *last_stream = redirect;
1278  last_stream = &redirect->next;
1279  }
1280  }
1281  } else {
1282  ffserver_parse_config_global(config, cmd, &p);
1283  }
1284  }
1285  if (stream || feed || redirect)
1286  ERROR("Missing closing </%s> tag\n",
1287  stream ? "Stream" : (feed ? "Feed" : "Redirect"));
1288 
1289  fclose(f);
1290  if (ret < 0)
1291  return ret;
1292  if (config->errors)
1293  return AVERROR(EINVAL);
1294  else
1295  return 0;
1296 }
1297 
1298 #undef ERROR
1299 #undef WARNING
1300 
1301 void ffserver_free_child_args(void *argsp)
1302 {
1303  int i;
1304  char **args;
1305  if (!argsp)
1306  return;
1307  args = *(char ***)argsp;
1308  if (!args)
1309  return;
1310  for (i = 0; i < MAX_CHILD_ARGS; i++)
1311  av_free(args[i]);
1312  av_freep(argsp);
1313 }
Generated on Sun Mar 8 2015 02:34:46 for FFmpeg by   doxygen 1.8.2