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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, int log_level,
39  int *errors, const char *fmt, va_list vl);
40 static void report_config_error(const char *filename, int line_num, int log_level,
41  int *errors, const char *fmt, ...);
42 
43 #define ERROR(...) report_config_error(config->filename, config->line_num,\
44  AV_LOG_ERROR, &config->errors, __VA_ARGS__)
45 #define WARNING(...) report_config_error(config->filename, config->line_num,\
46  AV_LOG_WARNING, &config->warnings, __VA_ARGS__)
47 
48 /* FIXME: make ffserver work with IPv6 */
49 /* resolve host with also IP address parsing */
50 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
51 {
52 
53  if (!ff_inet_aton(hostname, sin_addr)) {
54 #if HAVE_GETADDRINFO
55  struct addrinfo *ai, *cur;
56  struct addrinfo hints = { 0 };
57  hints.ai_family = AF_INET;
58  if (getaddrinfo(hostname, NULL, &hints, &ai))
59  return -1;
60  /* getaddrinfo returns a linked list of addrinfo structs.
61  * Even if we set ai_family = AF_INET above, make sure
62  * that the returned one actually is of the correct type. */
63  for (cur = ai; cur; cur = cur->ai_next) {
64  if (cur->ai_family == AF_INET) {
65  *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
66  freeaddrinfo(ai);
67  return 0;
68  }
69  }
70  freeaddrinfo(ai);
71  return -1;
72 #else
73  struct hostent *hp;
74  hp = gethostbyname(hostname);
75  if (!hp)
76  return -1;
77  memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
78 #endif
79  }
80  return 0;
81 }
82 
83 void ffserver_get_arg(char *buf, int buf_size, const char **pp)
84 {
85  const char *p;
86  char *q;
87  int quote;
88 
89  p = *pp;
90  while (av_isspace(*p)) p++;
91  q = buf;
92  quote = 0;
93  if (*p == '\"' || *p == '\'')
94  quote = *p++;
95  for(;;) {
96  if (quote) {
97  if (*p == quote)
98  break;
99  } else {
100  if (av_isspace(*p))
101  break;
102  }
103  if (*p == '\0')
104  break;
105  if ((q - buf) < buf_size - 1)
106  *q++ = *p;
107  p++;
108  }
109  *q = '\0';
110  if (quote && *p == quote)
111  p++;
112  *pp = p;
113 }
114 
115 void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,
116  FFServerIPAddressACL *ext_acl,
117  const char *p, const char *filename, int line_num)
118 {
119  char arg[1024];
120  FFServerIPAddressACL acl;
121  int errors = 0;
122 
123  ffserver_get_arg(arg, sizeof(arg), &p);
124  if (av_strcasecmp(arg, "allow") == 0)
125  acl.action = IP_ALLOW;
126  else if (av_strcasecmp(arg, "deny") == 0)
127  acl.action = IP_DENY;
128  else {
129  fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
130  filename, line_num, arg);
131  errors++;
132  }
133 
134  ffserver_get_arg(arg, sizeof(arg), &p);
135 
136  if (resolve_host(&acl.first, arg)) {
137  fprintf(stderr, "%s:%d: ACL refers to invalid host or IP address '%s'\n",
138  filename, line_num, arg);
139  errors++;
140  } else
141  acl.last = acl.first;
142 
143  ffserver_get_arg(arg, sizeof(arg), &p);
144 
145  if (arg[0]) {
146  if (resolve_host(&acl.last, arg)) {
147  fprintf(stderr,
148  "%s:%d: ACL refers to invalid host or IP address '%s'\n",
149  filename, line_num, arg);
150  errors++;
151  }
152  }
153 
154  if (!errors) {
155  FFServerIPAddressACL *nacl = av_mallocz(sizeof(*nacl));
156  FFServerIPAddressACL **naclp = 0;
157 
158  acl.next = 0;
159  *nacl = acl;
160 
161  if (stream)
162  naclp = &stream->acl;
163  else if (feed)
164  naclp = &feed->acl;
165  else if (ext_acl)
166  naclp = &ext_acl;
167  else {
168  fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
169  filename, line_num);
170  errors++;
171  }
172 
173  if (naclp) {
174  while (*naclp)
175  naclp = &(*naclp)->next;
176 
177  *naclp = nacl;
178  } else
179  av_free(nacl);
180  }
181 }
182 
183 /* add a codec and set the default parameters */
184 static void add_codec(FFServerStream *stream, AVCodecContext *av,
185  FFServerConfig *config)
186 {
187  AVStream *st;
188  AVDictionary **opts, *recommended = NULL;
189  char *enc_config;
190 
191  if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))
192  return;
193 
194  opts = av->codec_type == AVMEDIA_TYPE_AUDIO ?
195  &config->audio_opts : &config->video_opts;
196  av_dict_copy(&recommended, *opts, 0);
197  av_opt_set_dict2(av->priv_data, opts, AV_OPT_SEARCH_CHILDREN);
198  av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);
199  if (av_dict_count(*opts))
200  av_log(NULL, AV_LOG_WARNING,
201  "Something is wrong, %d options are not set!\n", av_dict_count(*opts));
202 
203  if (config->stream_use_defaults) {
204  //TODO: reident
205  /* compute default parameters */
206  switch(av->codec_type) {
207  case AVMEDIA_TYPE_AUDIO:
208  if (!av_dict_get(recommended, "ab", NULL, 0)) {
209  av->bit_rate = 64000;
210  av_dict_set_int(&recommended, "ab", av->bit_rate, 0);
211  WARNING("Setting default value for audio bit rate = %d. "
212  "Use NoDefaults to disable it.\n",
213  av->bit_rate);
214  }
215  if (!av_dict_get(recommended, "ar", NULL, 0)) {
216  av->sample_rate = 22050;
217  av_dict_set_int(&recommended, "ar", av->sample_rate, 0);
218  WARNING("Setting default value for audio sample rate = %d. "
219  "Use NoDefaults to disable it.\n",
220  av->sample_rate);
221  }
222  if (!av_dict_get(recommended, "ac", NULL, 0)) {
223  av->channels = 1;
224  av_dict_set_int(&recommended, "ac", av->channels, 0);
225  WARNING("Setting default value for audio channel count = %d. "
226  "Use NoDefaults to disable it.\n",
227  av->channels);
228  }
229  break;
230  case AVMEDIA_TYPE_VIDEO:
231  if (!av_dict_get(recommended, "b", NULL, 0)) {
232  av->bit_rate = 64000;
233  av_dict_set_int(&recommended, "b", av->bit_rate, 0);
234  WARNING("Setting default value for video bit rate = %d. "
235  "Use NoDefaults to disable it.\n",
236  av->bit_rate);
237  }
238  if (!av_dict_get(recommended, "time_base", NULL, 0)){
239  av->time_base.den = 5;
240  av->time_base.num = 1;
241  av_dict_set(&recommended, "time_base", "1/5", 0);
242  WARNING("Setting default value for video frame rate = %d. "
243  "Use NoDefaults to disable it.\n",
244  av->time_base.den);
245  }
246  if (!av_dict_get(recommended, "video_size", NULL, 0)) {
247  av->width = 160;
248  av->height = 128;
249  av_dict_set(&recommended, "video_size", "160x128", 0);
250  WARNING("Setting default value for video size = %dx%d. "
251  "Use NoDefaults to disable it.\n",
252  av->width, av->height);
253  }
254  /* Bitrate tolerance is less for streaming */
255  if (!av_dict_get(recommended, "bt", NULL, 0)) {
256  av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
257  (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
258  av_dict_set_int(&recommended, "bt", av->bit_rate_tolerance, 0);
259  WARNING("Setting default value for video bit rate tolerance = %d. "
260  "Use NoDefaults to disable it.\n",
261  av->bit_rate_tolerance);
262  }
263 
264  if (!av_dict_get(recommended, "rc_eq", NULL, 0)) {
265  av->rc_eq = av_strdup("tex^qComp");
266  av_dict_set(&recommended, "rc_eq", "tex^qComp", 0);
267  WARNING("Setting default value for video rate control equation = %s. "
268  "Use NoDefaults to disable it.\n",
269  av->rc_eq);
270  }
271  if (!av_dict_get(recommended, "maxrate", NULL, 0)) {
272  av->rc_max_rate = av->bit_rate * 2;
273  av_dict_set_int(&recommended, "maxrate", av->rc_max_rate, 0);
274  WARNING("Setting default value for video max rate = %d. "
275  "Use NoDefaults to disable it.\n",
276  av->rc_max_rate);
277  }
278 
279  if (av->rc_max_rate && !av_dict_get(recommended, "bufsize", NULL, 0)) {
280  av->rc_buffer_size = av->rc_max_rate;
281  av_dict_set_int(&recommended, "bufsize", av->rc_buffer_size, 0);
282  WARNING("Setting default value for video buffer size = %d. "
283  "Use NoDefaults to disable it.\n",
284  av->rc_buffer_size);
285  }
286  break;
287  default:
288  abort();
289  }
290  } else {
291  switch(av->codec_type) {
292  case AVMEDIA_TYPE_AUDIO:
293  if (av->bit_rate == 0)
294  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
295  &config->errors, "audio bit rate is not set\n");
296  if (av->sample_rate == 0)
297  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
298  &config->errors, "audio sample rate is not set\n");
299  break;
300  case AVMEDIA_TYPE_VIDEO:
301  if (av->width == 0 || av->height == 0)
302  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
303  &config->errors, "video size is not set\n");
304  break;
305  default:
306  av_assert0(0);
307  }
308  }
309 
310  st = av_mallocz(sizeof(AVStream));
311  if (!st)
312  return;
313  av_dict_get_string(recommended, &enc_config, '=', ',');
314  av_dict_free(&recommended);
315  av_stream_set_recommended_encoder_configuration(st, enc_config);
316  st->codec = av;
317  stream->streams[stream->nb_streams++] = st;
318 }
319 
320 static int ffserver_set_codec(AVCodecContext *ctx, const char *codec_name, FFServerConfig *config)
321 {
322  int ret;
323  AVCodec *codec = avcodec_find_encoder_by_name(codec_name);
324  if (!codec || codec->type != ctx->codec_type) {
325  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
326  &config->errors, "Invalid codec name: %s\n", codec_name);
327  return 0;
328  }
329  if (ctx->codec_id == AV_CODEC_ID_NONE && !ctx->priv_data) {
330  if ((ret = avcodec_get_context_defaults3(ctx, codec)) < 0)
331  return ret;
332  ctx->codec = codec;
333  }
334  if (ctx->codec_id != codec->id)
335  report_config_error(config->filename, config->line_num, AV_LOG_ERROR, &config->errors,
336  "Inconsistent configuration: trying to set %s codec option, but %s codec is used previously\n",
337  codec_name, avcodec_get_name(ctx->codec_id));
338  return 0;
339 }
340 
341 static int ffserver_opt_preset(const char *arg, int type, FFServerConfig *config)
342 {
343  FILE *f=NULL;
344  char filename[1000], tmp[1000], tmp2[1000], line[1000];
345  int ret = 0;
346  AVCodecContext *avctx;
347  const AVCodec *codec;
348 
349  switch(type) {
350  case AV_OPT_FLAG_AUDIO_PARAM:
351  avctx = config->dummy_actx;
352  break;
353  case AV_OPT_FLAG_VIDEO_PARAM:
354  avctx = config->dummy_vctx;
355  break;
356  default:
357  av_assert0(0);
358  }
359  codec = avcodec_find_encoder(avctx->codec_id);
360 
361  if (!(f = get_preset_file(filename, sizeof(filename), arg, 0,
362  codec ? codec->name : NULL))) {
363  av_log(NULL, AV_LOG_ERROR, "File for preset '%s' not found\n", arg);
364  return AVERROR(EINVAL);
365  }
366 
367  while(!feof(f)){
368  int e= fscanf(f, "%999[^\n]\n", line) - 1;
369  if(line[0] == '#' && !e)
370  continue;
371  e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;
372  if(e){
373  av_log(NULL, AV_LOG_ERROR, "%s: Invalid syntax: '%s'\n", filename, line);
374  ret = AVERROR(EINVAL);
375  break;
376  }
377  if ((!strcmp(tmp, "acodec") && avctx->codec_type == AVMEDIA_TYPE_AUDIO) ||
378  !strcmp(tmp, "vcodec") && avctx->codec_type == AVMEDIA_TYPE_VIDEO)
379  {
380  if (ffserver_set_codec(avctx, tmp2, config) < 0)
381  break;
382  } else if (!strcmp(tmp, "scodec")) {
383  av_log(NULL, AV_LOG_ERROR, "Subtitles preset found.\n");
384  ret = AVERROR(EINVAL);
385  break;
386  } else if (ffserver_save_avoption(tmp, tmp2, type, config) < 0)
387  break;
388  }
389 
390  fclose(f);
391 
392  return ret;
393 }
394 
395 static AVOutputFormat *ffserver_guess_format(const char *short_name, const char *filename, const char *mime_type)
396 {
397  AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
398 
399  if (fmt) {
400  AVOutputFormat *stream_fmt;
401  char stream_format_name[64];
402 
403  snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream",
404  fmt->name);
405  stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
406 
407  if (stream_fmt)
408  fmt = stream_fmt;
409  }
410 
411  return fmt;
412 }
413 
414 static void vreport_config_error(const char *filename, int line_num, int log_level, int *errors, const char *fmt, va_list vl)
415 {
416  av_log(NULL, log_level, "%s:%d: ", filename, line_num);
417  av_vlog(NULL, log_level, fmt, vl);
418  if (errors)
419  (*errors)++;
420 }
421 
422 static void report_config_error(const char *filename, int line_num, int log_level, int *errors, const char *fmt, ...)
423 {
424  va_list vl;
425  va_start(vl, fmt);
426  vreport_config_error(filename, line_num, log_level, errors, fmt, vl);
427  va_end(vl);
428 }
429 
430 static int ffserver_set_int_param(int *dest, const char *value, int factor, int min, int max,
431  FFServerConfig *config, const char *error_msg, ...)
432 {
433  int tmp;
434  char *tailp;
435  if (!value || !value[0])
436  goto error;
437  errno = 0;
438  tmp = strtol(value, &tailp, 0);
439  if (tmp < min || tmp > max)
440  goto error;
441  if (factor) {
442  if (FFABS(tmp) > INT_MAX / FFABS(factor))
443  goto error;
444  tmp *= factor;
445  }
446  if (tailp[0] || errno)
447  goto error;
448  if (dest)
449  *dest = tmp;
450  return 0;
451  error:
452  if (config) {
453  va_list vl;
454  va_start(vl, error_msg);
455  vreport_config_error(config->filename, config->line_num, AV_LOG_ERROR,
456  &config->errors, error_msg, vl);
457  va_end(vl);
458  }
459  return AVERROR(EINVAL);
460 }
461 
462 static int ffserver_set_float_param(float *dest, const char *value, float factor, float min, float max,
463  FFServerConfig *config, const char *error_msg, ...)
464 {
465  double tmp;
466  char *tailp;
467  if (!value || !value[0])
468  goto error;
469  errno = 0;
470  tmp = strtod(value, &tailp);
471  if (tmp < min || tmp > max)
472  goto error;
473  if (factor)
474  tmp *= factor;
475  if (tailp[0] || errno)
476  goto error;
477  if (dest)
478  *dest = tmp;
479  return 0;
480  error:
481  if (config) {
482  va_list vl;
483  va_start(vl, error_msg);
484  vreport_config_error(config->filename, config->line_num, AV_LOG_ERROR,
485  &config->errors, error_msg, vl);
486  va_end(vl);
487  }
488  return AVERROR(EINVAL);
489 }
490 
491 static int ffserver_save_avoption(const char *opt, const char *arg, int type, FFServerConfig *config)
492 {
493  static int hinted = 0;
494  int ret = 0;
495  AVDictionaryEntry *e;
496  const AVOption *o = NULL;
497  const char *option = NULL;
498  const char *codec_name = NULL;
499  char buff[1024];
500  AVCodecContext *ctx;
501  AVDictionary **dict;
502  enum AVCodecID guessed_codec_id;
503 
504  switch (type) {
505  case AV_OPT_FLAG_VIDEO_PARAM:
506  ctx = config->dummy_vctx;
507  dict = &config->video_opts;
508  guessed_codec_id = config->guessed_video_codec_id != AV_CODEC_ID_NONE ?
509  config->guessed_video_codec_id : AV_CODEC_ID_H264;
510  break;
511  case AV_OPT_FLAG_AUDIO_PARAM:
512  ctx = config->dummy_actx;
513  dict = &config->audio_opts;
514  guessed_codec_id = config->guessed_audio_codec_id != AV_CODEC_ID_NONE ?
515  config->guessed_audio_codec_id : AV_CODEC_ID_AAC;
516  break;
517  default:
518  av_assert0(0);
519  }
520 
521  if (strchr(opt, ':')) {
522  //explicit private option
523  snprintf(buff, sizeof(buff), "%s", opt);
524  codec_name = buff;
525  option = strchr(buff, ':');
526  buff[option - buff] = '\0';
527  option++;
528  if ((ret = ffserver_set_codec(ctx, codec_name, config)) < 0)
529  return ret;
530  if (!ctx->codec || !ctx->priv_data)
531  return -1;
532  } else {
533  option = opt;
534  }
535 
536  o = av_opt_find(ctx, option, NULL, type | AV_OPT_FLAG_ENCODING_PARAM, AV_OPT_SEARCH_CHILDREN);
537  if (!o && (!strcmp(option, "time_base") || !strcmp(option, "pixel_format") ||
538  !strcmp(option, "video_size") || !strcmp(option, "codec_tag")))
539  o = av_opt_find(ctx, option, NULL, 0, 0);
540  if (!o) {
541  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
542  &config->errors, "Option not found: %s\n", opt);
543  if (!hinted && ctx->codec_id == AV_CODEC_ID_NONE) {
544  hinted = 1;
545  report_config_error(config->filename, config->line_num, AV_LOG_ERROR, NULL,
546  "If '%s' is a codec private option, then prefix it with codec name, "
547  "for example '%s:%s %s' or define codec earlier.\n",
548  opt, avcodec_get_name(guessed_codec_id) ,opt, arg);
549  }
550  } else if ((ret = av_opt_set(ctx, option, arg, AV_OPT_SEARCH_CHILDREN)) < 0) {
551  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
552  &config->errors, "Invalid value for option %s (%s): %s\n", opt,
553  arg, av_err2str(ret));
554  } else if ((e = av_dict_get(*dict, option, NULL, 0))) {
555  if ((o->type == AV_OPT_TYPE_FLAGS) && arg && (arg[0] == '+' || arg[0] == '-'))
556  return av_dict_set(dict, option, arg, AV_DICT_APPEND);
557  report_config_error(config->filename, config->line_num, AV_LOG_ERROR,
558  &config->errors,
559  "Redeclaring value of the option %s, previous value: %s\n",
560  opt, e->value);
561  } else if (av_dict_set(dict, option, arg, 0) < 0) {
562  return AVERROR(ENOMEM);
563  }
564  return 0;
565 }
566 
567 static int ffserver_save_avoption_int(const char *opt, int64_t arg,
568  int type, FFServerConfig *config)
569 {
570  char buf[22];
571  snprintf(buf, sizeof(buf), "%"PRId64, arg);
572  return ffserver_save_avoption(opt, buf, type, config);
573 }
574 
575 static int ffserver_parse_config_global(FFServerConfig *config, const char *cmd,
576  const char **p)
577 {
578  int val;
579  char arg[1024];
580  if (!av_strcasecmp(cmd, "Port") || !av_strcasecmp(cmd, "HTTPPort")) {
581  if (!av_strcasecmp(cmd, "Port"))
582  WARNING("Port option is deprecated, use HTTPPort instead\n");
583  ffserver_get_arg(arg, sizeof(arg), p);
584  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
585  "Invalid port: %s\n", arg);
586  if (val < 1024)
587  WARNING("Trying to use IETF assigned system port: %d\n", val);
588  config->http_addr.sin_port = htons(val);
589  } else if (!av_strcasecmp(cmd, "HTTPBindAddress") || !av_strcasecmp(cmd, "BindAddress")) {
590  if (!av_strcasecmp(cmd, "BindAddress"))
591  WARNING("BindAddress option is deprecated, use HTTPBindAddress instead\n");
592  ffserver_get_arg(arg, sizeof(arg), p);
593  if (resolve_host(&config->http_addr.sin_addr, arg))
594  ERROR("Invalid host/IP address: %s\n", arg);
595  } else if (!av_strcasecmp(cmd, "NoDaemon")) {
596  WARNING("NoDaemon option has no effect, you should remove it\n");
597  } else if (!av_strcasecmp(cmd, "RTSPPort")) {
598  ffserver_get_arg(arg, sizeof(arg), p);
599  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
600  "Invalid port: %s\n", arg);
601  config->rtsp_addr.sin_port = htons(val);
602  } else if (!av_strcasecmp(cmd, "RTSPBindAddress")) {
603  ffserver_get_arg(arg, sizeof(arg), p);
604  if (resolve_host(&config->rtsp_addr.sin_addr, arg))
605  ERROR("Invalid host/IP address: %s\n", arg);
606  } else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) {
607  ffserver_get_arg(arg, sizeof(arg), p);
608  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
609  "Invalid MaxHTTPConnections: %s\n", arg);
610  config->nb_max_http_connections = val;
611  if (config->nb_max_connections > config->nb_max_http_connections)
612  ERROR("Inconsistent configuration: MaxClients(%d) > MaxHTTPConnections(%d)\n",
613  config->nb_max_connections, config->nb_max_http_connections);
614  } else if (!av_strcasecmp(cmd, "MaxClients")) {
615  ffserver_get_arg(arg, sizeof(arg), p);
616  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
617  "Invalid MaxClients: %s\n", arg);
618  config->nb_max_connections = val;
619  if (config->nb_max_connections > config->nb_max_http_connections)
620  ERROR("Inconsistent configuration: MaxClients(%d) > MaxHTTPConnections(%d)\n",
621  config->nb_max_connections, config->nb_max_http_connections);
622  } else if (!av_strcasecmp(cmd, "MaxBandwidth")) {
623  int64_t llval;
624  char *tailp;
625  ffserver_get_arg(arg, sizeof(arg), p);
626  errno = 0;
627  llval = strtoll(arg, &tailp, 10);
628  if (llval < 10 || llval > 10000000 || tailp[0] || errno)
629  ERROR("Invalid MaxBandwidth: %s\n", arg);
630  else
631  config->max_bandwidth = llval;
632  } else if (!av_strcasecmp(cmd, "CustomLog")) {
633  if (!config->debug)
634  ffserver_get_arg(config->logfilename, sizeof(config->logfilename), p);
635  } else if (!av_strcasecmp(cmd, "LoadModule")) {
636  ERROR("Loadable modules are no longer supported\n");
637  } else if (!av_strcasecmp(cmd, "NoDefaults")) {
638  config->use_defaults = 0;
639  } else if (!av_strcasecmp(cmd, "UseDefaults")) {
640  config->use_defaults = 1;
641  } else
642  ERROR("Incorrect keyword: '%s'\n", cmd);
643  return 0;
644 }
645 
646 static int ffserver_parse_config_feed(FFServerConfig *config, const char *cmd, const char **p,
647  FFServerStream **pfeed)
648 {
649  FFServerStream *feed;
650  char arg[1024];
651  av_assert0(pfeed);
652  feed = *pfeed;
653  if (!av_strcasecmp(cmd, "<Feed")) {
654  char *q;
655  FFServerStream *s;
656  feed = av_mallocz(sizeof(FFServerStream));
657  if (!feed)
658  return AVERROR(ENOMEM);
659  ffserver_get_arg(feed->filename, sizeof(feed->filename), p);
660  q = strrchr(feed->filename, '>');
661  if (*q)
662  *q = '\0';
663 
664  for (s = config->first_feed; s; s = s->next) {
665  if (!strcmp(feed->filename, s->filename))
666  ERROR("Feed '%s' already registered\n", s->filename);
667  }
668 
669  feed->fmt = av_guess_format("ffm", NULL, NULL);
670  /* default feed file */
671  snprintf(feed->feed_filename, sizeof(feed->feed_filename),
672  "/tmp/%s.ffm", feed->filename);
673  feed->feed_max_size = 5 * 1024 * 1024;
674  feed->is_feed = 1;
675  feed->feed = feed; /* self feeding :-) */
676  *pfeed = feed;
677  return 0;
678  }
679  av_assert0(feed);
680  if (!av_strcasecmp(cmd, "Launch")) {
681  int i;
682 
683  feed->child_argv = av_mallocz_array(MAX_CHILD_ARGS, sizeof(char *));
684  if (!feed->child_argv)
685  return AVERROR(ENOMEM);
686  for (i = 0; i < MAX_CHILD_ARGS - 2; i++) {
687  ffserver_get_arg(arg, sizeof(arg), p);
688  if (!arg[0])
689  break;
690 
691  feed->child_argv[i] = av_strdup(arg);
692  if (!feed->child_argv[i])
693  return AVERROR(ENOMEM);
694  }
695 
696  feed->child_argv[i] =
697  av_asprintf("http://%s:%d/%s",
698  (config->http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :
699  inet_ntoa(config->http_addr.sin_addr), ntohs(config->http_addr.sin_port),
700  feed->filename);
701  if (!feed->child_argv[i])
702  return AVERROR(ENOMEM);
703  } else if (!av_strcasecmp(cmd, "ACL")) {
704  ffserver_parse_acl_row(NULL, feed, NULL, *p, config->filename,
705  config->line_num);
706  } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {
707  ffserver_get_arg(feed->feed_filename, sizeof(feed->feed_filename), p);
708  feed->readonly = !av_strcasecmp(cmd, "ReadOnlyFile");
709  } else if (!av_strcasecmp(cmd, "Truncate")) {
710  ffserver_get_arg(arg, sizeof(arg), p);
711  /* assume Truncate is true in case no argument is specified */
712  if (!arg[0]) {
713  feed->truncate = 1;
714  } else {
715  WARNING("Truncate N syntax in configuration file is deprecated, "
716  "use Truncate alone with no arguments\n");
717  feed->truncate = strtod(arg, NULL);
718  }
719  } else if (!av_strcasecmp(cmd, "FileMaxSize")) {
720  char *p1;
721  double fsize;
722 
723  ffserver_get_arg(arg, sizeof(arg), p);
724  p1 = arg;
725  fsize = strtod(p1, &p1);
726  switch(av_toupper(*p1)) {
727  case 'K':
728  fsize *= 1024;
729  break;
730  case 'M':
731  fsize *= 1024 * 1024;
732  break;
733  case 'G':
734  fsize *= 1024 * 1024 * 1024;
735  break;
736  default:
737  ERROR("Invalid file size: %s\n", arg);
738  break;
739  }
740  feed->feed_max_size = (int64_t)fsize;
741  if (feed->feed_max_size < FFM_PACKET_SIZE*4)
742  ERROR("Feed max file size is too small, must be at least %d\n",
743  FFM_PACKET_SIZE*4);
744  } else if (!av_strcasecmp(cmd, "</Feed>")) {
745  *pfeed = NULL;
746  } else {
747  ERROR("Invalid entry '%s' inside <Feed></Feed>\n", cmd);
748  }
749  return 0;
750 }
751 
752 static int ffserver_parse_config_stream(FFServerConfig *config, const char *cmd, const char **p,
753  FFServerStream **pstream)
754 {
755  char arg[1024], arg2[1024];
756  FFServerStream *stream;
757  int val;
758 
759  av_assert0(pstream);
760  stream = *pstream;
761 
762  if (!av_strcasecmp(cmd, "<Stream")) {
763  char *q;
764  FFServerStream *s;
765  stream = av_mallocz(sizeof(FFServerStream));
766  if (!stream)
767  return AVERROR(ENOMEM);
768  config->dummy_actx = avcodec_alloc_context3(NULL);
769  config->dummy_vctx = avcodec_alloc_context3(NULL);
770  if (!config->dummy_vctx || !config->dummy_actx) {
771  av_free(stream);
772  avcodec_free_context(&config->dummy_vctx);
773  avcodec_free_context(&config->dummy_actx);
774  return AVERROR(ENOMEM);
775  }
776  config->dummy_actx->codec_type = AVMEDIA_TYPE_AUDIO;
777  config->dummy_vctx->codec_type = AVMEDIA_TYPE_VIDEO;
778  ffserver_get_arg(stream->filename, sizeof(stream->filename), p);
779  q = strrchr(stream->filename, '>');
780  if (q)
781  *q = '\0';
782 
783  for (s = config->first_stream; s; s = s->next) {
784  if (!strcmp(stream->filename, s->filename))
785  ERROR("Stream '%s' already registered\n", s->filename);
786  }
787 
788  stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL);
789  if (stream->fmt) {
790  config->guessed_audio_codec_id = stream->fmt->audio_codec;
791  config->guessed_video_codec_id = stream->fmt->video_codec;
792  } else {
793  config->guessed_audio_codec_id = AV_CODEC_ID_NONE;
794  config->guessed_video_codec_id = AV_CODEC_ID_NONE;
795  }
796  config->stream_use_defaults = config->use_defaults;
797  *pstream = stream;
798  return 0;
799  }
800  av_assert0(stream);
801  if (!av_strcasecmp(cmd, "Feed")) {
802  FFServerStream *sfeed;
803  ffserver_get_arg(arg, sizeof(arg), p);
804  sfeed = config->first_feed;
805  while (sfeed) {
806  if (!strcmp(sfeed->filename, arg))
807  break;
808  sfeed = sfeed->next_feed;
809  }
810  if (!sfeed)
811  ERROR("Feed with name '%s' for stream '%s' is not defined\n", arg,
812  stream->filename);
813  else
814  stream->feed = sfeed;
815  } else if (!av_strcasecmp(cmd, "Format")) {
816  ffserver_get_arg(arg, sizeof(arg), p);
817  if (!strcmp(arg, "status")) {
818  stream->stream_type = STREAM_TYPE_STATUS;
819  stream->fmt = NULL;
820  } else {
821  stream->stream_type = STREAM_TYPE_LIVE;
822  /* JPEG cannot be used here, so use single frame MJPEG */
823  if (!strcmp(arg, "jpeg"))
824  strcpy(arg, "mjpeg");
825  stream->fmt = ffserver_guess_format(arg, NULL, NULL);
826  if (!stream->fmt)
827  ERROR("Unknown Format: %s\n", arg);
828  }
829  if (stream->fmt) {
830  config->guessed_audio_codec_id = stream->fmt->audio_codec;
831  config->guessed_video_codec_id = stream->fmt->video_codec;
832  }
833  } else if (!av_strcasecmp(cmd, "InputFormat")) {
834  ffserver_get_arg(arg, sizeof(arg), p);
835  stream->ifmt = av_find_input_format(arg);
836  if (!stream->ifmt)
837  ERROR("Unknown input format: %s\n", arg);
838  } else if (!av_strcasecmp(cmd, "FaviconURL")) {
839  if (stream->stream_type == STREAM_TYPE_STATUS)
840  ffserver_get_arg(stream->feed_filename,
841  sizeof(stream->feed_filename), p);
842  else
843  ERROR("FaviconURL only permitted for status streams\n");
844  } else if (!av_strcasecmp(cmd, "Author") ||
845  !av_strcasecmp(cmd, "Comment") ||
846  !av_strcasecmp(cmd, "Copyright") ||
847  !av_strcasecmp(cmd, "Title")) {
848  char key[32];
849  int i;
850  ffserver_get_arg(arg, sizeof(arg), p);
851  for (i = 0; i < strlen(cmd); i++)
852  key[i] = av_tolower(cmd[i]);
853  key[i] = 0;
854  WARNING("'%s' option in configuration file is deprecated, "
855  "use 'Metadata %s VALUE' instead\n", cmd, key);
856  if (av_dict_set(&stream->metadata, key, arg, 0) < 0)
857  goto nomem;
858  } else if (!av_strcasecmp(cmd, "Metadata")) {
859  ffserver_get_arg(arg, sizeof(arg), p);
860  ffserver_get_arg(arg2, sizeof(arg2), p);
861  if (av_dict_set(&stream->metadata, arg, arg2, 0) < 0)
862  goto nomem;
863  } else if (!av_strcasecmp(cmd, "Preroll")) {
864  ffserver_get_arg(arg, sizeof(arg), p);
865  stream->prebuffer = atof(arg) * 1000;
866  } else if (!av_strcasecmp(cmd, "StartSendOnKey")) {
867  stream->send_on_key = 1;
868  } else if (!av_strcasecmp(cmd, "AudioCodec")) {
869  ffserver_get_arg(arg, sizeof(arg), p);
870  ffserver_set_codec(config->dummy_actx, arg, config);
871  } else if (!av_strcasecmp(cmd, "VideoCodec")) {
872  ffserver_get_arg(arg, sizeof(arg), p);
873  ffserver_set_codec(config->dummy_vctx, arg, config);
874  } else if (!av_strcasecmp(cmd, "MaxTime")) {
875  ffserver_get_arg(arg, sizeof(arg), p);
876  stream->max_time = atof(arg) * 1000;
877  } else if (!av_strcasecmp(cmd, "AudioBitRate")) {
878  float f;
879  ffserver_get_arg(arg, sizeof(arg), p);
880  ffserver_set_float_param(&f, arg, 1000, -FLT_MAX, FLT_MAX, config,
881  "Invalid %s: %s\n", cmd, arg);
882  if (ffserver_save_avoption_int("ab", (int64_t)lrintf(f), AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
883  goto nomem;
884  } else if (!av_strcasecmp(cmd, "AudioChannels")) {
885  ffserver_get_arg(arg, sizeof(arg), p);
886  if (ffserver_save_avoption("ac", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
887  goto nomem;
888  } else if (!av_strcasecmp(cmd, "AudioSampleRate")) {
889  ffserver_get_arg(arg, sizeof(arg), p);
890  if (ffserver_save_avoption("ar", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)
891  goto nomem;
892  } else if (!av_strcasecmp(cmd, "VideoBitRateRange")) {
893  int minrate, maxrate;
894  char *dash;
895  ffserver_get_arg(arg, sizeof(arg), p);
896  dash = strchr(arg, '-');
897  if (dash) {
898  *dash = '\0';
899  dash++;
900  if (ffserver_set_int_param(&minrate, arg, 1000, 0, INT_MAX, config, "Invalid %s: %s", cmd, arg) >= 0 &&
901  ffserver_set_int_param(&maxrate, dash, 1000, 0, INT_MAX, config, "Invalid %s: %s", cmd, arg) >= 0) {
902  if (ffserver_save_avoption_int("minrate", minrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||
903  ffserver_save_avoption_int("maxrate", maxrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
904  goto nomem;
905  }
906  } else
907  ERROR("Incorrect format for VideoBitRateRange -- should be "
908  "<min>-<max>: %s\n", arg);
909  } else if (!av_strcasecmp(cmd, "Debug")) {
910  ffserver_get_arg(arg, sizeof(arg), p);
911  if (ffserver_save_avoption("debug", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||
912  ffserver_save_avoption("debug", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
913  goto nomem;
914  } else if (!av_strcasecmp(cmd, "Strict")) {
915  ffserver_get_arg(arg, sizeof(arg), p);
916  if (ffserver_save_avoption("strict", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||
917  ffserver_save_avoption("strict", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
918  goto nomem;
919  } else if (!av_strcasecmp(cmd, "VideoBufferSize")) {
920  ffserver_get_arg(arg, sizeof(arg), p);
921  ffserver_set_int_param(&val, arg, 8*1024, 0, INT_MAX, config,
922  "Invalid %s: %s", cmd, arg);
923  if (ffserver_save_avoption_int("bufsize", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
924  goto nomem;
925  } else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) {
926  ffserver_get_arg(arg, sizeof(arg), p);
927  ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,
928  "Invalid %s: %s", cmd, arg);
929  if (ffserver_save_avoption_int("bt", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
930  goto nomem;
931  } else if (!av_strcasecmp(cmd, "VideoBitRate")) {
932  ffserver_get_arg(arg, sizeof(arg), p);
933  ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,
934  "Invalid %s: %s", cmd, arg);
935  if (ffserver_save_avoption_int("b", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
936  goto nomem;
937  } else if (!av_strcasecmp(cmd, "VideoSize")) {
938  int ret, w, h;
939  ffserver_get_arg(arg, sizeof(arg), p);
940  ret = av_parse_video_size(&w, &h, arg);
941  if (ret < 0)
942  ERROR("Invalid video size '%s'\n", arg);
943  else {
944  if (w % 2 || h % 2)
945  WARNING("Image size is not a multiple of 2\n");
946  if (ffserver_save_avoption("video_size", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
947  goto nomem;
948  }
949  } else if (!av_strcasecmp(cmd, "VideoFrameRate")) {
950  ffserver_get_arg(&arg[2], sizeof(arg) - 2, p);
951  arg[0] = '1'; arg[1] = '/';
952  if (ffserver_save_avoption("time_base", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
953  goto nomem;
954  } else if (!av_strcasecmp(cmd, "PixelFormat")) {
955  enum AVPixelFormat pix_fmt;
956  ffserver_get_arg(arg, sizeof(arg), p);
957  pix_fmt = av_get_pix_fmt(arg);
958  if (pix_fmt == AV_PIX_FMT_NONE)
959  ERROR("Unknown pixel format: %s\n", arg);
960  else if (ffserver_save_avoption("pixel_format", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
961  goto nomem;
962  } else if (!av_strcasecmp(cmd, "VideoGopSize")) {
963  ffserver_get_arg(arg, sizeof(arg), p);
964  if (ffserver_save_avoption("g", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
965  goto nomem;
966  } else if (!av_strcasecmp(cmd, "VideoIntraOnly")) {
967  if (ffserver_save_avoption("g", "1", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
968  goto nomem;
969  } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {
970  if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
971  goto nomem;
972  } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {
973  if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 || //FIXME remove
974  ffserver_save_avoption("flags", "+mv4", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
975  goto nomem;
976  } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||
977  !av_strcasecmp(cmd, "AVOptionAudio")) {
978  int ret;
979  ffserver_get_arg(arg, sizeof(arg), p);
980  ffserver_get_arg(arg2, sizeof(arg2), p);
981  if (!av_strcasecmp(cmd, "AVOptionVideo"))
982  ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM, config);
983  else
984  ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM, config);
985  if (ret < 0)
986  goto nomem;
987  } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||
988  !av_strcasecmp(cmd, "AVPresetAudio")) {
989  ffserver_get_arg(arg, sizeof(arg), p);
990  if (!av_strcasecmp(cmd, "AVPresetVideo"))
991  ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);
992  else
993  ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);
994  } else if (!av_strcasecmp(cmd, "VideoTag")) {
995  ffserver_get_arg(arg, sizeof(arg), p);
996  if (strlen(arg) == 4 &&
997  ffserver_save_avoption_int("codec_tag", MKTAG(arg[0], arg[1], arg[2], arg[3]),
998  AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
999  goto nomem;
1000  } else if (!av_strcasecmp(cmd, "BitExact")) {
1001  if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1002  goto nomem;
1003  } else if (!av_strcasecmp(cmd, "DctFastint")) {
1004  if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1005  goto nomem;
1006  } else if (!av_strcasecmp(cmd, "IdctSimple")) {
1007  if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1008  goto nomem;
1009  } else if (!av_strcasecmp(cmd, "Qscale")) {
1010  ffserver_get_arg(arg, sizeof(arg), p);
1011  ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,
1012  "Invalid Qscale: %s\n", arg);
1013  if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||
1014  ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,
1015  AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1016  goto nomem;
1017  } else if (!av_strcasecmp(cmd, "VideoQDiff")) {
1018  ffserver_get_arg(arg, sizeof(arg), p);
1019  if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1020  goto nomem;
1021  } else if (!av_strcasecmp(cmd, "VideoQMax")) {
1022  ffserver_get_arg(arg, sizeof(arg), p);
1023  if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1024  goto nomem;
1025  } else if (!av_strcasecmp(cmd, "VideoQMin")) {
1026  ffserver_get_arg(arg, sizeof(arg), p);
1027  if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1028  goto nomem;
1029  } else if (!av_strcasecmp(cmd, "LumiMask")) {
1030  ffserver_get_arg(arg, sizeof(arg), p);
1031  if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1032  goto nomem;
1033  } else if (!av_strcasecmp(cmd, "DarkMask")) {
1034  ffserver_get_arg(arg, sizeof(arg), p);
1035  if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)
1036  goto nomem;
1037  } else if (!av_strcasecmp(cmd, "NoVideo")) {
1038  config->no_video = 1;
1039  } else if (!av_strcasecmp(cmd, "NoAudio")) {
1040  config->no_audio = 1;
1041  } else if (!av_strcasecmp(cmd, "ACL")) {
1042  ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,
1043  config->line_num);
1044  } else if (!av_strcasecmp(cmd, "DynamicACL")) {
1045  ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);
1046  } else if (!av_strcasecmp(cmd, "RTSPOption")) {
1047  ffserver_get_arg(arg, sizeof(arg), p);
1048  av_freep(&stream->rtsp_option);
1049  stream->rtsp_option = av_strdup(arg);
1050  } else if (!av_strcasecmp(cmd, "MulticastAddress")) {
1051  ffserver_get_arg(arg, sizeof(arg), p);
1052  if (resolve_host(&stream->multicast_ip, arg))
1053  ERROR("Invalid host/IP address: %s\n", arg);
1054  stream->is_multicast = 1;
1055  stream->loop = 1; /* default is looping */
1056  } else if (!av_strcasecmp(cmd, "MulticastPort")) {
1057  ffserver_get_arg(arg, sizeof(arg), p);
1058  ffserver_set_int_param(&val, arg, 0, 1, 65535, config,
1059  "Invalid MulticastPort: %s\n", arg);
1060  stream->multicast_port = val;
1061  } else if (!av_strcasecmp(cmd, "MulticastTTL")) {
1062  ffserver_get_arg(arg, sizeof(arg), p);
1063  ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,
1064  "Invalid MulticastTTL: %s\n", arg);
1065  stream->multicast_ttl = val;
1066  } else if (!av_strcasecmp(cmd, "NoLoop")) {
1067  stream->loop = 0;
1068  } else if (!av_strcasecmp(cmd, "</Stream>")) {
1069  config->stream_use_defaults &= 1;
1070  if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {
1071  if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)
1072  config->dummy_actx->codec_id = config->guessed_audio_codec_id;
1073  if (!config->no_audio && config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {
1074  AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));
1075  add_codec(stream, audio_enc, config);
1076  }
1077  if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)
1078  config->dummy_vctx->codec_id = config->guessed_video_codec_id;
1079  if (!config->no_video && config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {
1080  AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));
1081  add_codec(stream, video_enc, config);
1082  }
1083  }
1084  av_dict_free(&config->video_opts);
1085  av_dict_free(&config->audio_opts);
1086  avcodec_free_context(&config->dummy_vctx);
1087  avcodec_free_context(&config->dummy_actx);
1088  *pstream = NULL;
1089  } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {
1090  ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),
1091  p);
1092  } else if (!av_strcasecmp(cmd, "UseDefaults")) {
1093  if (config->stream_use_defaults > 1)
1094  WARNING("Multiple UseDefaults/NoDefaults entries.\n");
1095  config->stream_use_defaults = 3;
1096  } else if (!av_strcasecmp(cmd, "NoDefaults")) {
1097  if (config->stream_use_defaults > 1)
1098  WARNING("Multiple UseDefaults/NoDefaults entries.\n");
1099  config->stream_use_defaults = 2;
1100  } else {
1101  ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);
1102  }
1103  return 0;
1104  nomem:
1105  av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");
1106  av_dict_free(&config->video_opts);
1107  av_dict_free(&config->audio_opts);
1108  avcodec_free_context(&config->dummy_vctx);
1109  avcodec_free_context(&config->dummy_actx);
1110  return AVERROR(ENOMEM);
1111 }
1112 
1113 static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,
1114  FFServerStream **predirect)
1115 {
1116  FFServerStream *redirect;
1117  av_assert0(predirect);
1118  redirect = *predirect;
1119 
1120  if (!av_strcasecmp(cmd, "<Redirect")) {
1121  char *q;
1122  redirect = av_mallocz(sizeof(FFServerStream));
1123  if (!redirect)
1124  return AVERROR(ENOMEM);
1125 
1126  ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);
1127  q = strrchr(redirect->filename, '>');
1128  if (*q)
1129  *q = '\0';
1130  redirect->stream_type = STREAM_TYPE_REDIRECT;
1131  *predirect = redirect;
1132  return 0;
1133  }
1134  av_assert0(redirect);
1135  if (!av_strcasecmp(cmd, "URL")) {
1136  ffserver_get_arg(redirect->feed_filename,
1137  sizeof(redirect->feed_filename), p);
1138  } else if (!av_strcasecmp(cmd, "</Redirect>")) {
1139  if (!redirect->feed_filename[0])
1140  ERROR("No URL found for <Redirect>\n");
1141  *predirect = NULL;
1142  } else {
1143  ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);
1144  }
1145  return 0;
1146 }
1147 
1148 int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)
1149 {
1150  FILE *f;
1151  char line[1024];
1152  char cmd[64];
1153  const char *p;
1154  FFServerStream **last_stream, *stream = NULL, *redirect = NULL;
1155  FFServerStream **last_feed, *feed = NULL;
1156  int ret = 0;
1157 
1158  av_assert0(config);
1159 
1160  config->line_num = 0;
1161  f = fopen(filename, "r");
1162  if (!f) {
1163  ret = AVERROR(errno);
1164  av_log(NULL, AV_LOG_ERROR,
1165  "Could not open the configuration file '%s'\n", filename);
1166  return ret;
1167  }
1168 
1169  config->first_stream = NULL;
1170  last_stream = &config->first_stream;
1171  config->first_feed = NULL;
1172  last_feed = &config->first_feed;
1173  config->errors = config->warnings = 0;
1174 
1175  for(;;) {
1176  if (fgets(line, sizeof(line), f) == NULL)
1177  break;
1178  config->line_num++;
1179  p = line;
1180  while (av_isspace(*p))
1181  p++;
1182  if (*p == '\0' || *p == '#')
1183  continue;
1184 
1185  ffserver_get_arg(cmd, sizeof(cmd), &p);
1186 
1187  if (feed || !av_strcasecmp(cmd, "<Feed")) {
1188  int opening = !av_strcasecmp(cmd, "<Feed");
1189  if (opening && (stream || feed || redirect)) {
1190  ERROR("Already in a tag\n");
1191  } else {
1192  if ((ret = ffserver_parse_config_feed(config, cmd, &p, &feed)) < 0)
1193  break;
1194  if (opening) {
1195  /* add in stream list */
1196  *last_stream = feed;
1197  last_stream = &feed->next;
1198  /* add in feed list */
1199  *last_feed = feed;
1200  last_feed = &feed->next_feed;
1201  }
1202  }
1203  } else if (stream || !av_strcasecmp(cmd, "<Stream")) {
1204  int opening = !av_strcasecmp(cmd, "<Stream");
1205  if (opening && (stream || feed || redirect)) {
1206  ERROR("Already in a tag\n");
1207  } else {
1208  if ((ret = ffserver_parse_config_stream(config, cmd, &p, &stream)) < 0)
1209  break;
1210  if (opening) {
1211  /* add in stream list */
1212  *last_stream = stream;
1213  last_stream = &stream->next;
1214  }
1215  }
1216  } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {
1217  int opening = !av_strcasecmp(cmd, "<Redirect");
1218  if (opening && (stream || feed || redirect))
1219  ERROR("Already in a tag\n");
1220  else {
1221  if ((ret = ffserver_parse_config_redirect(config, cmd, &p, &redirect)) < 0)
1222  break;
1223  if (opening) {
1224  /* add in stream list */
1225  *last_stream = redirect;
1226  last_stream = &redirect->next;
1227  }
1228  }
1229  } else {
1230  ffserver_parse_config_global(config, cmd, &p);
1231  }
1232  }
1233  if (stream || feed || redirect)
1234  ERROR("Not closed tag %s\n", stream ? "<Stream>" : (feed ? "<Feed>" : "<Redirect>"));
1235 
1236  fclose(f);
1237  if (ret < 0)
1238  return ret;
1239  if (config->errors)
1240  return AVERROR(EINVAL);
1241  else
1242  return 0;
1243 }
1244 
1245 #undef ERROR
1246 #undef WARNING
1247 
1248 void ffserver_free_child_args(void *argsp)
1249 {
1250  int i;
1251  char **args;
1252  if (!argsp)
1253  return;
1254  args = *(char ***)argsp;
1255  if (!args)
1256  return;
1257  for (i = 0; i < MAX_CHILD_ARGS; i++)
1258  av_free(args[i]);
1259  av_freep(argsp);
1260 }
Generated on Fri Dec 5 2014 04:41:48 for FFmpeg by   doxygen 1.8.2