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FFmpeg/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. /* FIXME: make ffserver work with IPv6 */

  35. /* resolve host with also IP address parsing */

  36. static int resolve_host(struct in_addr *sin_addr, const char *hostname)

  37. {

  38. 

  39.     if (!ff_inet_aton(hostname, sin_addr)) {

  40. #if HAVE_GETADDRINFO

  41.         struct addrinfo *ai, *cur;

  42.         struct addrinfo hints = { 0 };

  43.         hints.ai_family = AF_INET;

  44.         if (getaddrinfo(hostname, NULL, &hints, &ai))

  45.             return -1;

  46.         /* getaddrinfo returns a linked list of addrinfo structs.

  47.          * Even if we set ai_family = AF_INET above, make sure

  48.          * that the returned one actually is of the correct type. */

  49.         for (cur = ai; cur; cur = cur->ai_next) {

  50.             if (cur->ai_family == AF_INET) {

  51.                 *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;

  52.                 freeaddrinfo(ai);

  53.                 return 0;

  54.             }

  55.         }

  56.         freeaddrinfo(ai);

  57.         return -1;

  58. #else

  59.         struct hostent *hp;

  60.         hp = gethostbyname(hostname);

  61.         if (!hp)

  62.             return -1;

  63.         memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));

  64. #endif

  65.     }

  66.     return 0;

  67. }

  68. 

  69. void ffserver_get_arg(char *buf, int buf_size, const char **pp)

  70. {

  71.     const char *p;

  72.     char *q;

  73.     int quote;

  74. 

  75.     p = *pp;

  76.     while (av_isspace(*p)) p++;

  77.     q = buf;

  78.     quote = 0;

  79.     if (*p == '\"' || *p == '\'')

  80.         quote = *p++;

  81.     for(;;) {

  82.         if (quote) {

  83.             if (*p == quote)

  84.                 break;

  85.         } else {

  86.             if (av_isspace(*p))

  87.                 break;

  88.         }

  89.         if (*p == '\0')

  90.             break;

  91.         if ((q - buf) < buf_size - 1)

  92.             *q++ = *p;

  93.         p++;

  94.     }

  95.     *q = '\0';

  96.     if (quote && *p == quote)

  97.         p++;

  98.     *pp = p;

  99. }

  100. 

  101. void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,

  102.                             FFServerIPAddressACL *ext_acl,

  103.                             const char *p, const char *filename, int line_num)

  104. {

  105.     char arg[1024];

  106.     FFServerIPAddressACL acl;

  107.     int errors = 0;

  108. 

  109.     ffserver_get_arg(arg, sizeof(arg), &p);

  110.     if (av_strcasecmp(arg, "allow") == 0)

  111.         acl.action = IP_ALLOW;

  112.     else if (av_strcasecmp(arg, "deny") == 0)

  113.         acl.action = IP_DENY;

  114.     else {

  115.         fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",

  116.                 filename, line_num, arg);

  117.         errors++;

  118.     }

  119. 

  120.     ffserver_get_arg(arg, sizeof(arg), &p);

  121. 

  122.     if (resolve_host(&acl.first, arg)) {

  123.         fprintf(stderr, "%s:%d: ACL refers to invalid host or IP address '%s'\n",

  124.                 filename, line_num, arg);

  125.         errors++;

  126.     } else

  127.         acl.last = acl.first;

  128. 

  129.     ffserver_get_arg(arg, sizeof(arg), &p);

  130. 

  131.     if (arg[0]) {

  132.         if (resolve_host(&acl.last, arg)) {

  133.             fprintf(stderr,

  134.                     "%s:%d: ACL refers to invalid host or IP address '%s'\n",

  135.                     filename, line_num, arg);

  136.             errors++;

  137.         }

  138.     }

  139. 

  140.     if (!errors) {

  141.         FFServerIPAddressACL *nacl = av_mallocz(sizeof(*nacl));

  142.         FFServerIPAddressACL **naclp = 0;

  143. 

  144.         acl.next = 0;

  145.         *nacl = acl;

  146. 

  147.         if (stream)

  148.             naclp = &stream->acl;

  149.         else if (feed)

  150.             naclp = &feed->acl;

  151.         else if (ext_acl)

  152.             naclp = &ext_acl;

  153.         else {

  154.             fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",

  155.                     filename, line_num);

  156.             errors++;

  157.         }

  158. 

  159.         if (naclp) {

  160.             while (*naclp)

  161.                 naclp = &(*naclp)->next;

  162. 

  163.             *naclp = nacl;

  164.         } else

  165.             av_free(nacl);

  166.     }

  167. }

  168. 

  169. /* add a codec and set the default parameters */

  170. static void add_codec(FFServerStream *stream, AVCodecContext *av)

  171. {

  172.     AVStream *st;

  173. 

  174.     if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))

  175.         return;

  176. 

  177.     /* compute default parameters */

  178.     switch(av->codec_type) {

  179.     case AVMEDIA_TYPE_AUDIO:

  180.         if (av->bit_rate == 0)

  181.             av->bit_rate = 64000;

  182.         if (av->sample_rate == 0)

  183.             av->sample_rate = 22050;

  184.         if (av->channels == 0)

  185.             av->channels = 1;

  186.         break;

  187.     case AVMEDIA_TYPE_VIDEO:

  188.         if (av->bit_rate == 0)

  189.             av->bit_rate = 64000;

  190.         if (av->time_base.num == 0){

  191.             av->time_base.den = 5;

  192.             av->time_base.num = 1;

  193.         }

  194.         if (av->width == 0 || av->height == 0) {

  195.             av->width = 160;

  196.             av->height = 128;

  197.         }

  198.         /* Bitrate tolerance is less for streaming */

  199.         if (av->bit_rate_tolerance == 0)

  200.             av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,

  201.                       (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);

  202.         if (av->qmin == 0)

  203.             av->qmin = 3;

  204.         if (av->qmax == 0)

  205.             av->qmax = 31;

  206.         if (av->max_qdiff == 0)

  207.             av->max_qdiff = 3;

  208.         av->qcompress = 0.5;

  209.         av->qblur = 0.5;

  210. 

  211.         if (!av->nsse_weight)

  212.             av->nsse_weight = 8;

  213. 

  214.         av->frame_skip_cmp = FF_CMP_DCTMAX;

  215.         if (!av->me_method)

  216.             av->me_method = ME_EPZS;

  217.         av->rc_buffer_aggressivity = 1.0;

  218. 

  219.         if (!av->rc_eq)

  220.             av->rc_eq = av_strdup("tex^qComp");

  221.         if (!av->i_quant_factor)

  222.             av->i_quant_factor = -0.8;

  223.         if (!av->b_quant_factor)

  224.             av->b_quant_factor = 1.25;

  225.         if (!av->b_quant_offset)

  226.             av->b_quant_offset = 1.25;

  227.         if (!av->rc_max_rate)

  228.             av->rc_max_rate = av->bit_rate * 2;

  229. 

  230.         if (av->rc_max_rate && !av->rc_buffer_size) {

  231.             av->rc_buffer_size = av->rc_max_rate;

  232.         }

  233. 

  234. 

  235.         break;

  236.     default:

  237.         abort();

  238.     }

  239. 

  240.     st = av_mallocz(sizeof(AVStream));

  241.     if (!st)

  242.         return;

  243.     st->codec = av;

  244.     stream->streams[stream->nb_streams++] = st;

  245. }

  246. 

  247. static enum AVCodecID opt_codec(const char *name, enum AVMediaType type)

  248. {

  249.     AVCodec *codec = avcodec_find_encoder_by_name(name);

  250. 

  251.     if (!codec || codec->type != type)

  252.         return AV_CODEC_ID_NONE;

  253.     return codec->id;

  254. }

  255. 

  256. static int ffserver_opt_default(const char *opt, const char *arg,

  257.                        AVCodecContext *avctx, int type)

  258. {

  259.     int ret = 0;

  260.     const AVOption *o = av_opt_find(avctx, opt, NULL, type, 0);

  261.     if(o)

  262.         ret = av_opt_set(avctx, opt, arg, 0);

  263.     return ret;

  264. }

  265. 

  266. static int ffserver_opt_preset(const char *arg,

  267.                        AVCodecContext *avctx, int type,

  268.                        enum AVCodecID *audio_id, enum AVCodecID *video_id)

  269. {

  270.     FILE *f=NULL;

  271.     char filename[1000], tmp[1000], tmp2[1000], line[1000];

  272.     int ret = 0;

  273.     AVCodec *codec = NULL;

  274. 

  275.     if (avctx)

  276.         codec = avcodec_find_encoder(avctx->codec_id);

  277. 

  278.     if (!(f = get_preset_file(filename, sizeof(filename), arg, 0,

  279.                               codec ? codec->name : NULL))) {

  280.         fprintf(stderr, "File for preset '%s' not found\n", arg);

  281.         return AVERROR(EINVAL);

  282.     }

  283. 

  284.     while(!feof(f)){

  285.         int e= fscanf(f, "%999[^\n]\n", line) - 1;

  286.         if(line[0] == '#' && !e)

  287.             continue;

  288.         e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;

  289.         if(e){

  290.             fprintf(stderr, "%s: Invalid syntax: '%s'\n", filename, line);

  291.             ret = AVERROR(EINVAL);

  292.             break;

  293.         }

  294.         if (audio_id && !strcmp(tmp, "acodec")) {

  295.             *audio_id = opt_codec(tmp2, AVMEDIA_TYPE_AUDIO);

  296.         } else if (video_id && !strcmp(tmp, "vcodec")){

  297.             *video_id = opt_codec(tmp2, AVMEDIA_TYPE_VIDEO);

  298.         } else if(!strcmp(tmp, "scodec")) {

  299.             /* opt_subtitle_codec(tmp2); */

  300.         } else if (avctx && (ret = ffserver_opt_default(tmp, tmp2, avctx, type)) < 0) {

  301.             fprintf(stderr, "%s: Invalid option or argument: '%s', parsed as "

  302.                     "'%s' = '%s'\n", filename, line, tmp, tmp2);

  303.             break;

  304.         }

  305.     }

  306. 

  307.     fclose(f);

  308. 

  309.     return ret;

  310. }

  311. 

  312. static AVOutputFormat *ffserver_guess_format(const char *short_name, const char *filename, const char *mime_type)

  313. {

  314.     AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);

  315. 

  316.     if (fmt) {

  317.         AVOutputFormat *stream_fmt;

  318.         char stream_format_name[64];

  319. 

  320.         snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream",

  321.                 fmt->name);

  322.         stream_fmt = av_guess_format(stream_format_name, NULL, NULL);

  323. 

  324.         if (stream_fmt)

  325.             fmt = stream_fmt;

  326.     }

  327. 

  328.     return fmt;

  329. }

  330. 

  331. static void vreport_config_error(const char *filename, int line_num, int log_level, int *errors, const char *fmt, va_list vl)

  332. {

  333.     av_log(NULL, log_level, "%s:%d: ", filename, line_num);

  334.     av_vlog(NULL, log_level, fmt, vl);

  335.     (*errors)++;

  336. }

  337. 

  338. static void report_config_error(const char *filename, int line_num, int log_level, int *errors, const char *fmt, ...)

  339. {

  340.     va_list vl;

  341.     va_start(vl, fmt);

  342.     vreport_config_error(filename, line_num, log_level, errors, fmt, vl);

  343.     va_end(vl);

  344. }

  345. 

  346. static int ffserver_set_int_param(int *dest, const char *value, int factor, int min, int max,

  347.                                   FFServerConfig *config, int line_num, const char *error_msg, ...)

  348. {

  349.     int tmp;

  350.     char *tailp;

  351.     if (!value || !value[0])

  352.         goto error;

  353.     errno = 0;

  354.     tmp = strtol(value, &tailp, 0);

  355.     if (tmp < min || tmp > max)

  356.         goto error;

  357.     if (factor) {

  358.         if (FFABS(tmp) > INT_MAX / FFABS(factor))

  359.             goto error;

  360.         tmp *= factor;

  361.     }

  362.     if (tailp[0] || errno)

  363.         goto error;

  364.     if (dest)

  365.         *dest = tmp;

  366.     return 0;

  367.   error:

  368.     if (config) {

  369.         va_list vl;

  370.         va_start(vl, error_msg);

  371.         vreport_config_error(config->filename, line_num, AV_LOG_ERROR,

  372.                 &config->errors, error_msg, vl);

  373.         va_end(vl);

  374.     }

  375.     return AVERROR(EINVAL);

  376. }

  377. 

  378. static int ffserver_set_float_param(float *dest, const char *value, float factor, float min, float max,

  379.                                     FFServerConfig *config, int line_num, const char *error_msg, ...)

  380. {

  381.     double tmp;

  382.     char *tailp;

  383.     if (!value || !value[0])

  384.         goto error;

  385.     errno = 0;

  386.     tmp = strtod(value, &tailp);

  387.     if (tmp < min || tmp > max)

  388.         goto error;

  389.     if (factor)

  390.         tmp *= factor;

  391.     if (tailp[0] || errno)

  392.         goto error;

  393.     if (dest)

  394.         *dest = tmp;

  395.     return 0;

  396.   error:

  397.     if (config) {

  398.         va_list vl;

  399.         va_start(vl, error_msg);

  400.         vreport_config_error(config->filename, line_num, AV_LOG_ERROR,

  401.                 &config->errors, error_msg, vl);

  402.         va_end(vl);

  403.     }

  404.     return AVERROR(EINVAL);

  405. }

  406. 

  407. static int ffserver_save_avoption(const char *opt, const char *arg, AVDictionary **dict,

  408.                                   int type, FFServerConfig *config, int line_num)

  409. {

  410.     int ret = 0;

  411.     AVDictionaryEntry *e;

  412.     const AVOption *o = av_opt_find(config->dummy_ctx, opt, NULL, type | AV_OPT_FLAG_ENCODING_PARAM, AV_OPT_SEARCH_CHILDREN);

  413.     if (!o) {

  414.         report_config_error(config->filename, line_num, AV_LOG_ERROR,

  415.                 &config->errors, "Option not found: %s\n", opt);

  416.     } else if ((ret = av_opt_set(config->dummy_ctx, opt, arg, AV_OPT_SEARCH_CHILDREN)) < 0) {

  417.         report_config_error(config->filename, line_num, AV_LOG_ERROR,

  418.                 &config->errors, "Invalid value for option %s (%s): %s\n", opt,

  419.                 arg, av_err2str(ret));

  420.     } else if ((e = av_dict_get(*dict, opt, NULL, 0))) {

  421.         if ((o->type == AV_OPT_TYPE_FLAGS) && arg && (arg[0] == '+' || arg[0] == '-'))

  422.             return av_dict_set(dict, opt, arg, AV_DICT_APPEND);

  423.         report_config_error(config->filename, line_num, AV_LOG_ERROR,

  424.                 &config->errors,

  425.                 "Redeclaring value of the option %s, previous value: %s\n",

  426.                 opt, e->value);

  427.     } else if (av_dict_set(dict, opt, arg, 0) < 0) {

  428.         return AVERROR(ENOMEM);

  429.     }

  430.     return 0;

  431. }

  432. 

  433. #define ERROR(...)   report_config_error(config->filename, line_num, AV_LOG_ERROR,   &config->errors,   __VA_ARGS__)

  434. #define WARNING(...) report_config_error(config->filename, line_num, AV_LOG_WARNING, &config->warnings, __VA_ARGS__)

  435. 

  436. static int ffserver_parse_config_global(FFServerConfig *config, const char *cmd,

  437.                                         const char **p, int line_num)

  438. {

  439.     int val;

  440.     char arg[1024];

  441.     if (!av_strcasecmp(cmd, "Port") || !av_strcasecmp(cmd, "HTTPPort")) {

  442.         if (!av_strcasecmp(cmd, "Port"))

  443.             WARNING("Port option is deprecated, use HTTPPort instead\n");

  444.         ffserver_get_arg(arg, sizeof(arg), p);

  445.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  446.                 "Invalid port: %s\n", arg);

  447.         if (val < 1024)

  448.             WARNING("Trying to use IETF assigned system port: %d\n", val);

  449.         config->http_addr.sin_port = htons(val);

  450.     } else if (!av_strcasecmp(cmd, "HTTPBindAddress") || !av_strcasecmp(cmd, "BindAddress")) {

  451.         if (!av_strcasecmp(cmd, "BindAddress"))

  452.             WARNING("BindAddress option is deprecated, use HTTPBindAddress instead\n");

  453.         ffserver_get_arg(arg, sizeof(arg), p);

  454.         if (resolve_host(&config->http_addr.sin_addr, arg))

  455.             ERROR("Invalid host/IP address: %s\n", arg);

  456.     } else if (!av_strcasecmp(cmd, "NoDaemon")) {

  457.         WARNING("NoDaemon option has no effect, you should remove it\n");

  458.     } else if (!av_strcasecmp(cmd, "RTSPPort")) {

  459.         ffserver_get_arg(arg, sizeof(arg), p);

  460.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  461.                 "Invalid port: %s\n", arg);

  462.         config->rtsp_addr.sin_port = htons(val);

  463.     } else if (!av_strcasecmp(cmd, "RTSPBindAddress")) {

  464.         ffserver_get_arg(arg, sizeof(arg), p);

  465.         if (resolve_host(&config->rtsp_addr.sin_addr, arg))

  466.             ERROR("Invalid host/IP address: %s\n", arg);

  467.     } else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) {

  468.         ffserver_get_arg(arg, sizeof(arg), p);

  469.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  470.                 "Invalid MaxHTTPConnections: %s\n", arg);

  471.         config->nb_max_http_connections = val;

  472.         if (config->nb_max_connections > config->nb_max_http_connections)

  473.             ERROR("Inconsistent configuration: MaxClients(%d) > MaxHTTPConnections(%d)\n",

  474.                   config->nb_max_connections, config->nb_max_http_connections);

  475.     } else if (!av_strcasecmp(cmd, "MaxClients")) {

  476.         ffserver_get_arg(arg, sizeof(arg), p);

  477.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  478.                 "Invalid MaxClients: %s\n", arg);

  479.         config->nb_max_connections = val;

  480.         if (config->nb_max_connections > config->nb_max_http_connections)

  481.             ERROR("Inconsistent configuration: MaxClients(%d) > MaxHTTPConnections(%d)\n",

  482.                   config->nb_max_connections, config->nb_max_http_connections);

  483.     } else if (!av_strcasecmp(cmd, "MaxBandwidth")) {

  484.         int64_t llval;

  485.         char *tailp;

  486.         ffserver_get_arg(arg, sizeof(arg), p);

  487.         errno = 0;

  488.         llval = strtoll(arg, &tailp, 10);

  489.         if (llval < 10 || llval > 10000000 || tailp[0] || errno)

  490.             ERROR("Invalid MaxBandwidth: %s\n", arg);

  491.         else

  492.             config->max_bandwidth = llval;

  493.     } else if (!av_strcasecmp(cmd, "CustomLog")) {

  494.         if (!config->debug)

  495.             ffserver_get_arg(config->logfilename, sizeof(config->logfilename), p);

  496.     } else if (!av_strcasecmp(cmd, "LoadModule")) {

  497.         ERROR("Loadable modules are no longer supported\n");

  498.     } else

  499.         ERROR("Incorrect keyword: '%s'\n", cmd);

  500.     return 0;

  501. }

  502. 

  503. static int ffserver_parse_config_feed(FFServerConfig *config, const char *cmd, const char **p,

  504.                                       int line_num, FFServerStream **pfeed)

  505. {

  506.     FFServerStream *feed;

  507.     char arg[1024];

  508.     av_assert0(pfeed);

  509.     feed = *pfeed;

  510.     if (!av_strcasecmp(cmd, "<Feed")) {

  511.         char *q;

  512.         FFServerStream *s;

  513.         feed = av_mallocz(sizeof(FFServerStream));

  514.         if (!feed)

  515.             return AVERROR(ENOMEM);

  516.         ffserver_get_arg(feed->filename, sizeof(feed->filename), p);

  517.         q = strrchr(feed->filename, '>');

  518.         if (*q)

  519.             *q = '\0';

  520. 

  521.         for (s = config->first_feed; s; s = s->next) {

  522.             if (!strcmp(feed->filename, s->filename))

  523.                 ERROR("Feed '%s' already registered\n", s->filename);

  524.         }

  525. 

  526.         feed->fmt = av_guess_format("ffm", NULL, NULL);

  527.         /* default feed file */

  528.         snprintf(feed->feed_filename, sizeof(feed->feed_filename),

  529.                  "/tmp/%s.ffm", feed->filename);

  530.         feed->feed_max_size = 5 * 1024 * 1024;

  531.         feed->is_feed = 1;

  532.         feed->feed = feed; /* self feeding :-) */

  533.         *pfeed = feed;

  534.         return 0;

  535.     }

  536.     av_assert0(feed);

  537.     if (!av_strcasecmp(cmd, "Launch")) {

  538.         int i;

  539. 

  540.         feed->child_argv = av_mallocz(64 * sizeof(char *));

  541.         if (!feed->child_argv)

  542.             return AVERROR(ENOMEM);

  543.         for (i = 0; i < 62; i++) {

  544.             ffserver_get_arg(arg, sizeof(arg), p);

  545.             if (!arg[0])

  546.                 break;

  547. 

  548.             feed->child_argv[i] = av_strdup(arg);

  549.             if (!feed->child_argv[i])

  550.                 return AVERROR(ENOMEM);

  551.         }

  552. 

  553.         feed->child_argv[i] =

  554.             av_asprintf("http://%s:%d/%s",

  555.                         (config->http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :

  556.                         inet_ntoa(config->http_addr.sin_addr), ntohs(config->http_addr.sin_port),

  557.                         feed->filename);

  558.         if (!feed->child_argv[i])

  559.             return AVERROR(ENOMEM);

  560.     } else if (!av_strcasecmp(cmd, "ACL")) {

  561.         ffserver_parse_acl_row(NULL, feed, NULL, *p, config->filename,

  562.                 line_num);

  563.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  564.         ffserver_get_arg(feed->feed_filename, sizeof(feed->feed_filename), p);

  565.         feed->readonly = !av_strcasecmp(cmd, "ReadOnlyFile");

  566.     } else if (!av_strcasecmp(cmd, "Truncate")) {

  567.         ffserver_get_arg(arg, sizeof(arg), p);

  568.         /* assume Truncate is true in case no argument is specified */

  569.         if (!arg[0]) {

  570.             feed->truncate = 1;

  571.         } else {

  572.             WARNING("Truncate N syntax in configuration file is deprecated, "

  573.                     "use Truncate alone with no arguments\n");

  574.             feed->truncate = strtod(arg, NULL);

  575.         }

  576.     } else if (!av_strcasecmp(cmd, "FileMaxSize")) {

  577.         char *p1;

  578.         double fsize;

  579. 

  580.         ffserver_get_arg(arg, sizeof(arg), p);

  581.         p1 = arg;

  582.         fsize = strtod(p1, &p1);

  583.         switch(av_toupper(*p1)) {

  584.         case 'K':

  585.             fsize *= 1024;

  586.             break;

  587.         case 'M':

  588.             fsize *= 1024 * 1024;

  589.             break;

  590.         case 'G':

  591.             fsize *= 1024 * 1024 * 1024;

  592.             break;

  593.         default:

  594.             ERROR("Invalid file size: %s\n", arg);

  595.             break;

  596.         }

  597.         feed->feed_max_size = (int64_t)fsize;

  598.         if (feed->feed_max_size < FFM_PACKET_SIZE*4)

  599.             ERROR("Feed max file size is too small, must be at least %d\n",

  600.                     FFM_PACKET_SIZE*4);

  601.     } else if (!av_strcasecmp(cmd, "</Feed>")) {

  602.         *pfeed = NULL;

  603.     } else {

  604.         ERROR("Invalid entry '%s' inside <Feed></Feed>\n", cmd);

  605.     }

  606.     return 0;

  607. }

  608. 

  609. static void ffserver_apply_stream_config(AVCodecContext *enc, const AVDictionary *conf, AVDictionary **opts)

  610. {

  611.     AVDictionaryEntry *e;

  612. 

  613.     /* Return values from ffserver_set_*_param are ignored.

  614.        Values are initially parsed and checked before inserting to

  615.        AVDictionary. */

  616. 

  617.     //video params

  618.     if ((e = av_dict_get(conf, "VideoBitRateRangeMin", NULL, 0)))

  619.         ffserver_set_int_param(&enc->rc_min_rate, e->value, 1000, INT_MIN,

  620.                 INT_MAX, NULL, 0, NULL);

  621.     if ((e = av_dict_get(conf, "VideoBitRateRangeMax", NULL, 0)))

  622.         ffserver_set_int_param(&enc->rc_max_rate, e->value, 1000, INT_MIN,

  623.                 INT_MAX, NULL, 0, NULL);

  624.     if ((e = av_dict_get(conf, "Debug", NULL, 0)))

  625.         ffserver_set_int_param(&enc->debug, e->value, 0, INT_MIN, INT_MAX,

  626.                 NULL, 0, NULL);

  627.     if ((e = av_dict_get(conf, "Strict", NULL, 0)))

  628.         ffserver_set_int_param(&enc->strict_std_compliance, e->value, 0,

  629.                 INT_MIN, INT_MAX, NULL, 0, NULL);

  630.     if ((e = av_dict_get(conf, "VideoBufferSize", NULL, 0)))

  631.         ffserver_set_int_param(&enc->rc_buffer_size, e->value, 8*1024,

  632.                 INT_MIN, INT_MAX, NULL, 0, NULL);

  633.     if ((e = av_dict_get(conf, "VideoBitRateTolerance", NULL, 0)))

  634.         ffserver_set_int_param(&enc->bit_rate_tolerance, e->value, 1000,

  635.                 INT_MIN, INT_MAX, NULL, 0, NULL);

  636.     if ((e = av_dict_get(conf, "VideoBitRate", NULL, 0)))

  637.         ffserver_set_int_param(&enc->bit_rate, e->value, 1000, INT_MIN,

  638.                 INT_MAX, NULL, 0, NULL);

  639.     if ((e = av_dict_get(conf, "VideoSizeWidth", NULL, 0)))

  640.         ffserver_set_int_param(&enc->width, e->value, 0, INT_MIN, INT_MAX,

  641.                 NULL, 0, NULL);

  642.     if ((e = av_dict_get(conf, "VideoSizeHeight", NULL, 0)))

  643.         ffserver_set_int_param(&enc->height, e->value, 0, INT_MIN, INT_MAX,

  644.                 NULL, 0, NULL);

  645.     if ((e = av_dict_get(conf, "PixelFormat", NULL, 0))) {

  646.         int val;

  647.         ffserver_set_int_param(&val, e->value, 0, INT_MIN, INT_MAX, NULL, 0,

  648.                 NULL);

  649.         enc->pix_fmt = val;

  650.     }

  651.     if ((e = av_dict_get(conf, "VideoGopSize", NULL, 0)))

  652.         ffserver_set_int_param(&enc->gop_size, e->value, 0, INT_MIN, INT_MAX,

  653.                 NULL, 0, NULL);

  654.     if ((e = av_dict_get(conf, "VideoFrameRateNum", NULL, 0)))

  655.         ffserver_set_int_param(&enc->time_base.num, e->value, 0, INT_MIN,

  656.                 INT_MAX, NULL, 0, NULL);

  657.     if ((e = av_dict_get(conf, "VideoFrameRateDen", NULL, 0)))

  658.         ffserver_set_int_param(&enc->time_base.den, e->value, 0, INT_MIN,

  659.                 INT_MAX, NULL, 0, NULL);

  660.     if ((e = av_dict_get(conf, "VideoQDiff", NULL, 0)))

  661.         ffserver_set_int_param(&enc->max_qdiff, e->value, 0, INT_MIN, INT_MAX,

  662.                 NULL, 0, NULL);

  663.     if ((e = av_dict_get(conf, "VideoQMax", NULL, 0)))

  664.         ffserver_set_int_param(&enc->qmax, e->value, 0, INT_MIN, INT_MAX, NULL,

  665.                 0, NULL);

  666.     if ((e = av_dict_get(conf, "VideoQMin", NULL, 0)))

  667.         ffserver_set_int_param(&enc->qmin, e->value, 0, INT_MIN, INT_MAX, NULL,

  668.                 0, NULL);

  669.     if ((e = av_dict_get(conf, "LumiMask", NULL, 0)))

  670.         ffserver_set_float_param(&enc->lumi_masking, e->value, 0, -FLT_MAX,

  671.                 FLT_MAX, NULL, 0, NULL);

  672.     if ((e = av_dict_get(conf, "DarkMask", NULL, 0)))

  673.         ffserver_set_float_param(&enc->dark_masking, e->value, 0, -FLT_MAX,

  674.                 FLT_MAX, NULL, 0, NULL);

  675.     if (av_dict_get(conf, "BitExact", NULL, 0))

  676.         enc->flags |= CODEC_FLAG_BITEXACT;

  677.     if (av_dict_get(conf, "DctFastint", NULL, 0))

  678.         enc->dct_algo  = FF_DCT_FASTINT;

  679.     if (av_dict_get(conf, "IdctSimple", NULL, 0))

  680.         enc->idct_algo = FF_IDCT_SIMPLE;

  681.     if (av_dict_get(conf, "VideoHighQuality", NULL, 0))

  682.         enc->mb_decision = FF_MB_DECISION_BITS;

  683.     if ((e = av_dict_get(conf, "VideoTag", NULL, 0)))

  684.         enc->codec_tag = MKTAG(e->value[0], e->value[1], e->value[2], e->value[3]);

  685.     if (av_dict_get(conf, "Qscale", NULL, 0)) {

  686.         enc->flags |= CODEC_FLAG_QSCALE;

  687.         ffserver_set_int_param(&enc->global_quality, e->value, FF_QP2LAMBDA,

  688.                 INT_MIN, INT_MAX, NULL, 0, NULL);

  689.     }

  690.     if (av_dict_get(conf, "Video4MotionVector", NULL, 0)) {

  691.         enc->mb_decision = FF_MB_DECISION_BITS; //FIXME remove

  692.         enc->flags |= CODEC_FLAG_4MV;

  693.     }

  694.     //audio params

  695.     if ((e = av_dict_get(conf, "AudioChannels", NULL, 0)))

  696.         ffserver_set_int_param(&enc->channels, e->value, 0, INT_MIN, INT_MAX,

  697.                 NULL, 0, NULL);

  698.     if ((e = av_dict_get(conf, "AudioSampleRate", NULL, 0)))

  699.         ffserver_set_int_param(&enc->sample_rate, e->value, 0, INT_MIN,

  700.                 INT_MAX, NULL, 0, NULL);

  701.     if ((e = av_dict_get(conf, "AudioBitRate", NULL, 0)))

  702.         ffserver_set_int_param(&enc->bit_rate, e->value, 0, INT_MIN, INT_MAX,

  703.                 NULL, 0, NULL);

  704. 

  705.     av_opt_set_dict2(enc, opts, AV_OPT_SEARCH_CHILDREN);

  706. }

  707. 

  708. static int ffserver_parse_config_stream(FFServerConfig *config, const char *cmd, const char **p,

  709.                                         int line_num, FFServerStream **pstream)

  710. {

  711.     char arg[1024], arg2[1024];

  712.     FFServerStream *stream;

  713.     int val;

  714. 

  715.     av_assert0(pstream);

  716.     stream = *pstream;

  717. 

  718.     if (!av_strcasecmp(cmd, "<Stream")) {

  719.         char *q;

  720.         FFServerStream *s;

  721.         stream = av_mallocz(sizeof(FFServerStream));

  722.         if (!stream)

  723.             return AVERROR(ENOMEM);

  724.         config->dummy_ctx = avcodec_alloc_context3(NULL);

  725.         if (!config->dummy_ctx) {

  726.             av_free(stream);

  727.             return AVERROR(ENOMEM);

  728.         }

  729.         ffserver_get_arg(stream->filename, sizeof(stream->filename), p);

  730.         q = strrchr(stream->filename, '>');

  731.         if (q)

  732.             *q = '\0';

  733. 

  734.         for (s = config->first_stream; s; s = s->next) {

  735.             if (!strcmp(stream->filename, s->filename))

  736.                 ERROR("Stream '%s' already registered\n", s->filename);

  737.         }

  738. 

  739.         stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL);

  740.         if (stream->fmt) {

  741.             config->audio_id = stream->fmt->audio_codec;

  742.             config->video_id = stream->fmt->video_codec;

  743.         } else {

  744.             config->audio_id = AV_CODEC_ID_NONE;

  745.             config->video_id = AV_CODEC_ID_NONE;

  746.         }

  747.         *pstream = stream;

  748.         return 0;

  749.     }

  750.     av_assert0(stream);

  751.     if (!av_strcasecmp(cmd, "Feed")) {

  752.         FFServerStream *sfeed;

  753.         ffserver_get_arg(arg, sizeof(arg), p);

  754.         sfeed = config->first_feed;

  755.         while (sfeed) {

  756.             if (!strcmp(sfeed->filename, arg))

  757.                 break;

  758.             sfeed = sfeed->next_feed;

  759.         }

  760.         if (!sfeed)

  761.             ERROR("Feed with name '%s' for stream '%s' is not defined\n", arg,

  762.                     stream->filename);

  763.         else

  764.             stream->feed = sfeed;

  765.     } else if (!av_strcasecmp(cmd, "Format")) {

  766.         ffserver_get_arg(arg, sizeof(arg), p);

  767.         if (!strcmp(arg, "status")) {

  768.             stream->stream_type = STREAM_TYPE_STATUS;

  769.             stream->fmt = NULL;

  770.         } else {

  771.             stream->stream_type = STREAM_TYPE_LIVE;

  772.             /* JPEG cannot be used here, so use single frame MJPEG */

  773.             if (!strcmp(arg, "jpeg"))

  774.                 strcpy(arg, "mjpeg");

  775.             stream->fmt = ffserver_guess_format(arg, NULL, NULL);

  776.             if (!stream->fmt)

  777.                 ERROR("Unknown Format: %s\n", arg);

  778.         }

  779.         if (stream->fmt) {

  780.             config->audio_id = stream->fmt->audio_codec;

  781.             config->video_id = stream->fmt->video_codec;

  782.         }

  783.     } else if (!av_strcasecmp(cmd, "InputFormat")) {

  784.         ffserver_get_arg(arg, sizeof(arg), p);

  785.         stream->ifmt = av_find_input_format(arg);

  786.         if (!stream->ifmt)

  787.             ERROR("Unknown input format: %s\n", arg);

  788.     } else if (!av_strcasecmp(cmd, "FaviconURL")) {

  789.         if (stream->stream_type == STREAM_TYPE_STATUS)

  790.             ffserver_get_arg(stream->feed_filename,

  791.                     sizeof(stream->feed_filename), p);

  792.         else

  793.             ERROR("FaviconURL only permitted for status streams\n");

  794.     } else if (!av_strcasecmp(cmd, "Author")    ||

  795.                !av_strcasecmp(cmd, "Comment")   ||

  796.                !av_strcasecmp(cmd, "Copyright") ||

  797.                !av_strcasecmp(cmd, "Title")) {

  798.         char key[32];

  799.         int i;

  800.         ffserver_get_arg(arg, sizeof(arg), p);

  801.         for (i = 0; i < strlen(cmd); i++)

  802.             key[i] = av_tolower(cmd[i]);

  803.         key[i] = 0;

  804.         WARNING("'%s' option in configuration file is deprecated, "

  805.                 "use 'Metadata %s VALUE' instead\n", cmd, key);

  806.         if (av_dict_set(&stream->metadata, key, arg, 0) < 0)

  807.             goto nomem;

  808.     } else if (!av_strcasecmp(cmd, "Metadata")) {

  809.         ffserver_get_arg(arg, sizeof(arg), p);

  810.         ffserver_get_arg(arg2, sizeof(arg2), p);

  811.         if (av_dict_set(&stream->metadata, arg, arg2, 0) < 0)

  812.             goto nomem;

  813.     } else if (!av_strcasecmp(cmd, "Preroll")) {

  814.         ffserver_get_arg(arg, sizeof(arg), p);

  815.         stream->prebuffer = atof(arg) * 1000;

  816.     } else if (!av_strcasecmp(cmd, "StartSendOnKey")) {

  817.         stream->send_on_key = 1;

  818.     } else if (!av_strcasecmp(cmd, "AudioCodec")) {

  819.         ffserver_get_arg(arg, sizeof(arg), p);

  820.         config->audio_id = opt_codec(arg, AVMEDIA_TYPE_AUDIO);

  821.         if (config->audio_id == AV_CODEC_ID_NONE)

  822.             ERROR("Unknown AudioCodec: %s\n", arg);

  823.     } else if (!av_strcasecmp(cmd, "VideoCodec")) {

  824.         ffserver_get_arg(arg, sizeof(arg), p);

  825.         config->video_id = opt_codec(arg, AVMEDIA_TYPE_VIDEO);

  826.         if (config->video_id == AV_CODEC_ID_NONE)

  827.             ERROR("Unknown VideoCodec: %s\n", arg);

  828.     } else if (!av_strcasecmp(cmd, "MaxTime")) {

  829.         ffserver_get_arg(arg, sizeof(arg), p);

  830.         stream->max_time = atof(arg) * 1000;

  831.     } else if (!av_strcasecmp(cmd, "AudioBitRate")) {

  832.         float f;

  833.         ffserver_get_arg(arg, sizeof(arg), p);

  834.         ffserver_set_float_param(&f, arg, 1000, 0, FLT_MAX, config, line_num,

  835.                 "Invalid %s: %s\n", cmd, arg);

  836.         if (av_dict_set_int(&config->audio_conf, cmd, lrintf(f), 0) < 0)

  837.             goto nomem;

  838.     } else if (!av_strcasecmp(cmd, "AudioChannels")) {

  839.         ffserver_get_arg(arg, sizeof(arg), p);

  840.         ffserver_set_int_param(NULL, arg, 0, 1, 8, config, line_num,

  841.                 "Invalid %s: %s, valid range is 1-8.", cmd, arg);

  842.         if (av_dict_set(&config->audio_conf, cmd, arg, 0) < 0)

  843.             goto nomem;

  844.     } else if (!av_strcasecmp(cmd, "AudioSampleRate")) {

  845.         ffserver_get_arg(arg, sizeof(arg), p);

  846.         ffserver_set_int_param(NULL, arg, 0, 0, INT_MAX, config, line_num,

  847.                 "Invalid %s: %s", cmd, arg);

  848.         if (av_dict_set(&config->audio_conf, cmd, arg, 0) < 0)

  849.             goto nomem;

  850.     } else if (!av_strcasecmp(cmd, "VideoBitRateRange")) {

  851.         int minrate, maxrate;

  852.         ffserver_get_arg(arg, sizeof(arg), p);

  853.         if (sscanf(arg, "%d-%d", &minrate, &maxrate) == 2) {

  854.             if (av_dict_set_int(&config->video_conf, "VideoBitRateRangeMin", minrate, 0) < 0 ||

  855.                 av_dict_set_int(&config->video_conf, "VideoBitRateRangeMax", maxrate, 0) < 0)

  856.                 goto nomem;

  857.         } else

  858.             ERROR("Incorrect format for VideoBitRateRange -- should be "

  859.                     "<min>-<max>: %s\n", arg);

  860.     } else if (!av_strcasecmp(cmd, "Debug")) {

  861.         ffserver_get_arg(arg, sizeof(arg), p);

  862.         ffserver_set_int_param(NULL, arg, 0, INT_MIN, INT_MAX, config, line_num,

  863.                 "Invalid %s: %s", cmd, arg);

  864.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  865.             goto nomem;

  866.     } else if (!av_strcasecmp(cmd, "Strict")) {

  867.         ffserver_get_arg(arg, sizeof(arg), p);

  868.         ffserver_set_int_param(NULL, arg, 0, INT_MIN, INT_MAX, config, line_num,

  869.                 "Invalid %s: %s", cmd, arg);

  870.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  871.             goto nomem;

  872.     } else if (!av_strcasecmp(cmd, "VideoBufferSize")) {

  873.         ffserver_get_arg(arg, sizeof(arg), p);

  874.         ffserver_set_int_param(NULL, arg, 8*1024, 0, INT_MAX, config, line_num,

  875.                 "Invalid %s: %s", cmd, arg);

  876.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  877.             goto nomem;

  878.     } else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) {

  879.         ffserver_get_arg(arg, sizeof(arg), p);

  880.         ffserver_set_int_param(NULL, arg, 1000, INT_MIN, INT_MAX, config,

  881.                 line_num, "Invalid %s: %s", cmd, arg);

  882.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  883.             goto nomem;

  884.     } else if (!av_strcasecmp(cmd, "VideoBitRate")) {

  885.         ffserver_get_arg(arg, sizeof(arg), p);

  886.         ffserver_set_int_param(NULL, arg, 1000, 0, INT_MAX, config, line_num,

  887.                 "Invalid %s: %s", cmd, arg);

  888.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  889.            goto nomem;

  890.     } else if (!av_strcasecmp(cmd, "VideoSize")) {

  891.         int ret, w, h;

  892.         ffserver_get_arg(arg, sizeof(arg), p);

  893.         ret = av_parse_video_size(&w, &h, arg);

  894.         if (ret < 0)

  895.             ERROR("Invalid video size '%s'\n", arg);

  896.         else if ((w % 16) || (h % 16))

  897.             ERROR("Image size must be a multiple of 16\n");

  898.         if (av_dict_set_int(&config->video_conf, "VideoSizeWidth", w, 0) < 0 ||

  899.             av_dict_set_int(&config->video_conf, "VideoSizeHeight", h, 0) < 0)

  900.             goto nomem;

  901.     } else if (!av_strcasecmp(cmd, "VideoFrameRate")) {

  902.         AVRational frame_rate;

  903.         ffserver_get_arg(arg, sizeof(arg), p);

  904.         if (av_parse_video_rate(&frame_rate, arg) < 0) {

  905.             ERROR("Incorrect frame rate: %s\n", arg);

  906.         } else {

  907.             if (av_dict_set_int(&config->video_conf, "VideoFrameRateNum", frame_rate.num, 0) < 0 ||

  908.                 av_dict_set_int(&config->video_conf, "VideoFrameRateDen", frame_rate.den, 0) < 0)

  909.                 goto nomem;

  910.         }

  911.     } else if (!av_strcasecmp(cmd, "PixelFormat")) {

  912.         enum AVPixelFormat pix_fmt;

  913.         ffserver_get_arg(arg, sizeof(arg), p);

  914.         pix_fmt = av_get_pix_fmt(arg);

  915.         if (pix_fmt == AV_PIX_FMT_NONE)

  916.             ERROR("Unknown pixel format: %s\n", arg);

  917.         if (av_dict_set_int(&config->video_conf, cmd, pix_fmt, 0) < 0)

  918.             goto nomem;

  919.     } else if (!av_strcasecmp(cmd, "VideoGopSize")) {

  920.         ffserver_get_arg(arg, sizeof(arg), p);

  921.         ffserver_set_int_param(NULL, arg, 0, INT_MIN, INT_MAX, config, line_num,

  922.                 "Invalid %s: %s", cmd, arg);

  923.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  924.             goto nomem;

  925.     } else if (!av_strcasecmp(cmd, "VideoIntraOnly")) {

  926.         if (av_dict_set(&config->video_conf, cmd, "1", 0) < 0)

  927.             goto nomem;

  928.     } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {

  929.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  930.             goto nomem;

  931.     } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {

  932.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  933.             goto nomem;

  934.     } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||

  935.                !av_strcasecmp(cmd, "AVOptionAudio")) {

  936.         int ret;

  937.         ffserver_get_arg(arg, sizeof(arg), p);

  938.         ffserver_get_arg(arg2, sizeof(arg2), p);

  939.         if (!av_strcasecmp(cmd, "AVOptionVideo"))

  940.             ret = ffserver_save_avoption(arg, arg2, &config->video_opts, AV_OPT_FLAG_VIDEO_PARAM ,config, line_num);

  941.         else

  942.             ret = ffserver_save_avoption(arg, arg2, &config->audio_opts, AV_OPT_FLAG_AUDIO_PARAM ,config, line_num);

  943.         if (ret < 0)

  944.             goto nomem;

  945.     } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||

  946.                !av_strcasecmp(cmd, "AVPresetAudio")) {

  947.         char **preset = NULL;

  948.         ffserver_get_arg(arg, sizeof(arg), p);

  949.         if (!av_strcasecmp(cmd, "AVPresetVideo")) {

  950.             preset = &config->video_preset;

  951.             ffserver_opt_preset(arg, NULL, 0, NULL, &config->video_id);

  952.         } else {

  953.             preset = &config->audio_preset;

  954.             ffserver_opt_preset(arg, NULL, 0, &config->audio_id, NULL);

  955.         }

  956.         *preset = av_strdup(arg);

  957.         if (!preset)

  958.             return AVERROR(ENOMEM);

  959.     } else if (!av_strcasecmp(cmd, "VideoTag")) {

  960.         ffserver_get_arg(arg, sizeof(arg), p);

  961.         if (strlen(arg) == 4) {

  962.             if (av_dict_set(&config->video_conf, "VideoTag", "arg", 0) < 0)

  963.                 goto nomem;

  964.         }

  965.     } else if (!av_strcasecmp(cmd, "BitExact")) {

  966.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  967.             goto nomem;

  968.     } else if (!av_strcasecmp(cmd, "DctFastint")) {

  969.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  970.             goto nomem;

  971.     } else if (!av_strcasecmp(cmd, "IdctSimple")) {

  972.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  973.             goto nomem;

  974.     } else if (!av_strcasecmp(cmd, "Qscale")) {

  975.         ffserver_get_arg(arg, sizeof(arg), p);

  976.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  977.             goto nomem;

  978.     } else if (!av_strcasecmp(cmd, "VideoQDiff")) {

  979.         ffserver_get_arg(arg, sizeof(arg), p);

  980.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  981.                 "%s out of range\n", cmd);

  982.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  983.             goto nomem;

  984.     } else if (!av_strcasecmp(cmd, "VideoQMax")) {

  985.         ffserver_get_arg(arg, sizeof(arg), p);

  986.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  987.                 "%s out of range\n", cmd);

  988.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  989.             goto nomem;

  990.     } else if (!av_strcasecmp(cmd, "VideoQMin")) {

  991.         ffserver_get_arg(arg, sizeof(arg), p);

  992.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  993.                 "%s out of range\n", cmd);

  994.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  995.             goto nomem;

  996.     } else if (!av_strcasecmp(cmd, "LumiMask")) {

  997.         ffserver_get_arg(arg, sizeof(arg), p);

  998.         ffserver_set_float_param(NULL, arg, 0, -FLT_MAX, FLT_MAX, config,

  999.                 line_num, "Invalid %s: %s", cmd, arg);

  1000.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1001.             goto nomem;

  1002.     } else if (!av_strcasecmp(cmd, "DarkMask")) {

  1003.         ffserver_get_arg(arg, sizeof(arg), p);

  1004.         ffserver_set_float_param(NULL, arg, 0, -FLT_MAX, FLT_MAX, config,

  1005.                 line_num, "Invalid %s: %s", cmd, arg);

  1006.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1007.             goto nomem;

  1008.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1009.         config->video_id = AV_CODEC_ID_NONE;

  1010.     } else if (!av_strcasecmp(cmd, "NoAudio")) {

  1011.         config->audio_id = AV_CODEC_ID_NONE;

  1012.     } else if (!av_strcasecmp(cmd, "ACL")) {

  1013.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1014.                 line_num);

  1015.     } else if (!av_strcasecmp(cmd, "DynamicACL")) {

  1016.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

  1017.     } else if (!av_strcasecmp(cmd, "RTSPOption")) {

  1018.         ffserver_get_arg(arg, sizeof(arg), p);

  1019.         av_freep(&stream->rtsp_option);

  1020.         stream->rtsp_option = av_strdup(arg);

  1021.     } else if (!av_strcasecmp(cmd, "MulticastAddress")) {

  1022.         ffserver_get_arg(arg, sizeof(arg), p);

  1023.         if (resolve_host(&stream->multicast_ip, arg))

  1024.             ERROR("Invalid host/IP address: %s\n", arg);

  1025.         stream->is_multicast = 1;

  1026.         stream->loop = 1; /* default is looping */

  1027.     } else if (!av_strcasecmp(cmd, "MulticastPort")) {

  1028.         ffserver_get_arg(arg, sizeof(arg), p);

  1029.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  1030.                 "Invalid MulticastPort: %s\n", arg);

  1031.         stream->multicast_port = val;

  1032.     } else if (!av_strcasecmp(cmd, "MulticastTTL")) {

  1033.         ffserver_get_arg(arg, sizeof(arg), p);

  1034.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1035.                 line_num, "Invalid MulticastTTL: %s\n", arg);

  1036.         stream->multicast_ttl = val;

  1037.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1038.         stream->loop = 0;

  1039.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1040.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

  1041.             if (config->audio_id != AV_CODEC_ID_NONE) {

  1042.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->audio_id));

  1043.                 if (config->audio_preset &&

  1044.                     ffserver_opt_preset(arg, audio_enc, AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_ENCODING_PARAM,

  1045.                                         NULL, NULL) < 0)

  1046.                     ERROR("Could not apply preset '%s'\n", arg);

  1047.                 ffserver_apply_stream_config(audio_enc, config->audio_conf,

  1048.                         &config->audio_opts);

  1049.                 add_codec(stream, audio_enc);

  1050.             }

  1051.             if (config->video_id != AV_CODEC_ID_NONE) {

  1052.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->video_id));

  1053.                 if (config->video_preset &&

  1054.                     ffserver_opt_preset(arg, video_enc, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_ENCODING_PARAM,

  1055.                                         NULL, NULL) < 0)

  1056.                     ERROR("Could not apply preset '%s'\n", arg);

  1057.                 ffserver_apply_stream_config(video_enc, config->video_conf,

  1058.                         &config->video_opts);

  1059.                 add_codec(stream, video_enc);

  1060.             }

  1061.         }

  1062.         av_dict_free(&config->video_opts);

  1063.         av_dict_free(&config->video_conf);

  1064.         av_dict_free(&config->audio_opts);

  1065.         av_dict_free(&config->audio_conf);

  1066.         av_freep(&config->video_preset);

  1067.         av_freep(&config->audio_preset);

  1068.         avcodec_free_context(&config->dummy_ctx);

  1069.         *pstream = NULL;

  1070.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1071.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1072.                 p);

  1073.     } else {

  1074.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1075.     }

  1076.     return 0;

  1077.   nomem:

  1078.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1079.     av_dict_free(&config->video_opts);

  1080.     av_dict_free(&config->video_conf);

  1081.     av_dict_free(&config->audio_opts);

  1082.     av_dict_free(&config->audio_conf);

  1083.     av_freep(&config->video_preset);

  1084.     av_freep(&config->audio_preset);

  1085.     avcodec_free_context(&config->dummy_ctx);

  1086.     return AVERROR(ENOMEM);

  1087. }

  1088. 

  1089. static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,

  1090.                                           int line_num, FFServerStream **predirect)

  1091. {

  1092.     FFServerStream *redirect;

  1093.     av_assert0(predirect);

  1094.     redirect = *predirect;

  1095. 

  1096.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1097.         char *q;

  1098.         redirect = av_mallocz(sizeof(FFServerStream));

  1099.         if (!redirect)

  1100.             return AVERROR(ENOMEM);

  1101. 

  1102.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1103.         q = strrchr(redirect->filename, '>');

  1104.         if (*q)

  1105.             *q = '\0';

  1106.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1107.         *predirect = redirect;

  1108.         return 0;

  1109.     }

  1110.     av_assert0(redirect);

  1111.     if (!av_strcasecmp(cmd, "URL")) {

  1112.         ffserver_get_arg(redirect->feed_filename,

  1113.                 sizeof(redirect->feed_filename), p);

  1114.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1115.         if (!redirect->feed_filename[0])

  1116.             ERROR("No URL found for <Redirect>\n");

  1117.         *predirect = NULL;

  1118.     } else {

  1119.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1120.     }

  1121.     return 0;

  1122. }

  1123. 

  1124. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1125. {

  1126.     FILE *f;

  1127.     char line[1024];

  1128.     char cmd[64];

  1129.     const char *p;

  1130.     int line_num = 0;

  1131.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1132.     FFServerStream **last_feed, *feed = NULL;

  1133.     int ret = 0;

  1134. 

  1135.     av_assert0(config);

  1136. 

  1137.     f = fopen(filename, "r");

  1138.     if (!f) {

  1139.         ret = AVERROR(errno);

  1140.         av_log(NULL, AV_LOG_ERROR,

  1141.                 "Could not open the configuration file '%s'\n", filename);

  1142.         return ret;

  1143.     }

  1144. 

  1145.     config->first_stream = NULL;

  1146.     last_stream = &config->first_stream;

  1147.     config->first_feed = NULL;

  1148.     last_feed = &config->first_feed;

  1149.     config->errors = config->warnings = 0;

  1150. 

  1151.     for(;;) {

  1152.         if (fgets(line, sizeof(line), f) == NULL)

  1153.             break;

  1154.         line_num++;

  1155.         p = line;

  1156.         while (av_isspace(*p))

  1157.             p++;

  1158.         if (*p == '\0' || *p == '#')

  1159.             continue;

  1160. 

  1161.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1162. 

  1163.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1164.             int opening = !av_strcasecmp(cmd, "<Feed");

  1165.             if (opening && (stream || feed || redirect)) {

  1166.                 ERROR("Already in a tag\n");

  1167.             } else {

  1168.                 if ((ret = ffserver_parse_config_feed(config, cmd, &p, line_num, &feed)) < 0)

  1169.                     break;

  1170.                 if (opening) {

  1171.                     /* add in stream list */

  1172.                     *last_stream = feed;

  1173.                     last_stream = &feed->next;

  1174.                     /* add in feed list */

  1175.                     *last_feed = feed;

  1176.                     last_feed = &feed->next_feed;

  1177.                 }

  1178.             }

  1179.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1180.             int opening = !av_strcasecmp(cmd, "<Stream");

  1181.             if (opening && (stream || feed || redirect)) {

  1182.                 ERROR("Already in a tag\n");

  1183.             } else {

  1184.                 if ((ret = ffserver_parse_config_stream(config, cmd, &p, line_num, &stream)) < 0)

  1185.                     break;

  1186.                 if (opening) {

  1187.                     /* add in stream list */

  1188.                     *last_stream = stream;

  1189.                     last_stream = &stream->next;

  1190.                 }

  1191.             }

  1192.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1193.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1194.             if (opening && (stream || feed || redirect))

  1195.                 ERROR("Already in a tag\n");

  1196.             else {

  1197.                 if ((ret = ffserver_parse_config_redirect(config, cmd, &p, line_num, &redirect)) < 0)

  1198.                     break;

  1199.                 if (opening) {

  1200.                     /* add in stream list */

  1201.                     *last_stream = redirect;

  1202.                     last_stream = &redirect->next;

  1203.                 }

  1204.             }

  1205.         } else {

  1206.             ffserver_parse_config_global(config, cmd, &p, line_num);

  1207.         }

  1208.     }

  1209. 

  1210.     fclose(f);

  1211.     if (ret < 0)

  1212.         return ret;

  1213.     if (config->errors)

  1214.         return AVERROR(EINVAL);

  1215.     else

  1216.         return 0;

  1217. }

  1218. 

  1219. #undef ERROR

  1220. #undef WARNING