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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. static int ffserver_save_avoption(const char *opt, const char *arg, int type,

  35.                                   FFServerConfig *config);

  36. static void vreport_config_error(const char *filename, int line_num, int log_level,

  37.                                  int *errors, const char *fmt, va_list vl);

  38. static void report_config_error(const char *filename, int line_num, int log_level,

  39.                                 int *errors, const char *fmt, ...);

  40. 

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

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

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

  44. {

  45. 

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

  47. #if HAVE_GETADDRINFO

  48.         struct addrinfo *ai, *cur;

  49.         struct addrinfo hints = { 0 };

  50.         hints.ai_family = AF_INET;

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

  52.             return -1;

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

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

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

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

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

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

  59.                 freeaddrinfo(ai);

  60.                 return 0;

  61.             }

  62.         }

  63.         freeaddrinfo(ai);

  64.         return -1;

  65. #else

  66.         struct hostent *hp;

  67.         hp = gethostbyname(hostname);

  68.         if (!hp)

  69.             return -1;

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

  71. #endif

  72.     }

  73.     return 0;

  74. }

  75. 

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

  77. {

  78.     const char *p;

  79.     char *q;

  80.     int quote;

  81. 

  82.     p = *pp;

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

  84.     q = buf;

  85.     quote = 0;

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

  87.         quote = *p++;

  88.     for(;;) {

  89.         if (quote) {

  90.             if (*p == quote)

  91.                 break;

  92.         } else {

  93.             if (av_isspace(*p))

  94.                 break;

  95.         }

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

  97.             break;

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

  99.             *q++ = *p;

  100.         p++;

  101.     }

  102.     *q = '\0';

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

  104.         p++;

  105.     *pp = p;

  106. }

  107. 

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

  109.                             FFServerIPAddressACL *ext_acl,

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

  111. {

  112.     char arg[1024];

  113.     FFServerIPAddressACL acl;

  114.     int errors = 0;

  115. 

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

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

  118.         acl.action = IP_ALLOW;

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

  120.         acl.action = IP_DENY;

  121.     else {

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

  123.                 filename, line_num, arg);

  124.         errors++;

  125.     }

  126. 

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

  128. 

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

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

  131.                 filename, line_num, arg);

  132.         errors++;

  133.     } else

  134.         acl.last = acl.first;

  135. 

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

  137. 

  138.     if (arg[0]) {

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

  140.             fprintf(stderr,

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

  142.                     filename, line_num, arg);

  143.             errors++;

  144.         }

  145.     }

  146. 

  147.     if (!errors) {

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

  149.         FFServerIPAddressACL **naclp = 0;

  150. 

  151.         acl.next = 0;

  152.         *nacl = acl;

  153. 

  154.         if (stream)

  155.             naclp = &stream->acl;

  156.         else if (feed)

  157.             naclp = &feed->acl;

  158.         else if (ext_acl)

  159.             naclp = &ext_acl;

  160.         else {

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

  162.                     filename, line_num);

  163.             errors++;

  164.         }

  165. 

  166.         if (naclp) {

  167.             while (*naclp)

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

  169. 

  170.             *naclp = nacl;

  171.         } else

  172.             av_free(nacl);

  173.     }

  174. }

  175. 

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

  177. static void add_codec(FFServerStream *stream, AVCodecContext *av,

  178.                       FFServerConfig *config)

  179. {

  180.     AVStream *st;

  181.     AVDictionary **opts;

  182. 

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

  184.         return;

  185. 

  186.     opts = av->codec_type == AVMEDIA_TYPE_AUDIO ?

  187.            &config->audio_opts : &config->video_opts;

  188.     av_opt_set_dict2(av->priv_data, opts, AV_OPT_SEARCH_CHILDREN);

  189.     av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);

  190.     if (av_dict_count(*opts))

  191.         av_log(NULL, AV_LOG_WARNING,

  192.                "Something is wrong, %d options are not set!\n", av_dict_count(*opts));

  193. 

  194.     if (config->stream_use_defaults) {

  195.     //TODO: reident

  196.     /* compute default parameters */

  197.     switch(av->codec_type) {

  198.     case AVMEDIA_TYPE_AUDIO:

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

  200.             av->bit_rate = 64000;

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

  202.             av->sample_rate = 22050;

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

  204.             av->channels = 1;

  205.         break;

  206.     case AVMEDIA_TYPE_VIDEO:

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

  208.             av->bit_rate = 64000;

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

  210.             av->time_base.den = 5;

  211.             av->time_base.num = 1;

  212.         }

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

  214.             av->width = 160;

  215.             av->height = 128;

  216.         }

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

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

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

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

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

  222.             av->qmin = 3;

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

  224.             av->qmax = 31;

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

  226.             av->max_qdiff = 3;

  227.         av->qcompress = 0.5;

  228.         av->qblur = 0.5;

  229. 

  230.         if (!av->nsse_weight)

  231.             av->nsse_weight = 8;

  232. 

  233.         av->frame_skip_cmp = FF_CMP_DCTMAX;

  234.         if (!av->me_method)

  235.             av->me_method = ME_EPZS;

  236. 

  237.         /* FIXME: rc_buffer_aggressivity and rc_eq are deprecated */

  238.         av->rc_buffer_aggressivity = 1.0;

  239. 

  240.         if (!av->rc_eq)

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

  242.         if (!av->i_quant_factor)

  243.             av->i_quant_factor = -0.8;

  244.         if (!av->b_quant_factor)

  245.             av->b_quant_factor = 1.25;

  246.         if (!av->b_quant_offset)

  247.             av->b_quant_offset = 1.25;

  248.         if (!av->rc_max_rate)

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

  250. 

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

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

  253.         }

  254. 

  255. 

  256.         break;

  257.     default:

  258.         abort();

  259.     }

  260.     } else {

  261.         switch(av->codec_type) {

  262.         case AVMEDIA_TYPE_AUDIO:

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

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

  265.                                     &config->errors, "audio bit rate is not set\n");

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

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

  268.                                     &config->errors, "audio sample rate is not set\n");

  269.             break;

  270.         case AVMEDIA_TYPE_VIDEO:

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

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

  273.                                     &config->errors, "video size is not set\n");

  274.             break;

  275.         default:

  276.             av_assert0(0);

  277.         }

  278.     }

  279. 

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

  281.     if (!st)

  282.         return;

  283.     st->codec = av;

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

  285. }

  286. 

  287. static int ffserver_set_codec(AVCodecContext *ctx, const char *codec_name, FFServerConfig *config)

  288. {

  289.     int ret;

  290.     AVCodec *codec = avcodec_find_encoder_by_name(codec_name);

  291.     if (!codec || codec->type != ctx->codec_type) {

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

  293.                             &config->errors, "Invalid codec name: %s\n", codec_name);

  294.         return 0;

  295.     }

  296.     if (ctx->codec_id == AV_CODEC_ID_NONE && !ctx->priv_data) {

  297.         if ((ret = avcodec_get_context_defaults3(ctx, codec)) < 0)

  298.             return ret;

  299.         ctx->codec = codec;

  300.     }

  301.     if (ctx->codec_id != codec->id)

  302.         report_config_error(config->filename, config->line_num, AV_LOG_ERROR, &config->errors,

  303.                             "Inconsistent configuration: trying to set %s codec option, but %s codec is used previously\n",

  304.                             codec_name, avcodec_get_name(ctx->codec_id));

  305.     return 0;

  306. }

  307. 

  308. static int ffserver_opt_preset(const char *arg, int type, FFServerConfig *config)

  309. {

  310.     FILE *f=NULL;

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

  312.     int ret = 0;

  313.     AVCodecContext *avctx;

  314.     const AVCodec *codec;

  315. 

  316.     switch(type) {

  317.     case AV_OPT_FLAG_AUDIO_PARAM:

  318.         avctx = config->dummy_actx;

  319.         break;

  320.     case AV_OPT_FLAG_VIDEO_PARAM:

  321.         avctx = config->dummy_vctx;

  322.         break;

  323.     default:

  324.         av_assert0(0);

  325.     }

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

  327. 

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

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

  330.         av_log(NULL, AV_LOG_ERROR, "File for preset '%s' not found\n", arg);

  331.         return AVERROR(EINVAL);

  332.     }

  333. 

  334.     while(!feof(f)){

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

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

  337.             continue;

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

  339.         if(e){

  340.             av_log(NULL, AV_LOG_ERROR, "%s: Invalid syntax: '%s'\n", filename, line);

  341.             ret = AVERROR(EINVAL);

  342.             break;

  343.         }

  344.         if ((!strcmp(tmp, "acodec") && avctx->codec_type == AVMEDIA_TYPE_AUDIO) ||

  345.              !strcmp(tmp, "vcodec") && avctx->codec_type == AVMEDIA_TYPE_VIDEO)

  346.         {

  347.             if (ffserver_set_codec(avctx, tmp2, config) < 0)

  348.                 break;

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

  350.             av_log(NULL, AV_LOG_ERROR, "Subtitles preset found.\n");

  351.             ret = AVERROR(EINVAL);

  352.             break;

  353.         } else if (ffserver_save_avoption(tmp, tmp2, type, config) < 0)

  354.             break;

  355.     }

  356. 

  357.     fclose(f);

  358. 

  359.     return ret;

  360. }

  361. 

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

  363. {

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

  365. 

  366.     if (fmt) {

  367.         AVOutputFormat *stream_fmt;

  368.         char stream_format_name[64];

  369. 

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

  371.                 fmt->name);

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

  373. 

  374.         if (stream_fmt)

  375.             fmt = stream_fmt;

  376.     }

  377. 

  378.     return fmt;

  379. }

  380. 

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

  382. {

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

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

  385.     if (errors)

  386.         (*errors)++;

  387. }

  388. 

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

  390. {

  391.     va_list vl;

  392.     va_start(vl, fmt);

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

  394.     va_end(vl);

  395. }

  396. 

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

  398.                                   FFServerConfig *config, const char *error_msg, ...)

  399. {

  400.     int tmp;

  401.     char *tailp;

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

  403.         goto error;

  404.     errno = 0;

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

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

  407.         goto error;

  408.     if (factor) {

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

  410.             goto error;

  411.         tmp *= factor;

  412.     }

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

  414.         goto error;

  415.     if (dest)

  416.         *dest = tmp;

  417.     return 0;

  418.   error:

  419.     if (config) {

  420.         va_list vl;

  421.         va_start(vl, error_msg);

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

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

  424.         va_end(vl);

  425.     }

  426.     return AVERROR(EINVAL);

  427. }

  428. 

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

  430.                                     FFServerConfig *config, const char *error_msg, ...)

  431. {

  432.     double tmp;

  433.     char *tailp;

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

  435.         goto error;

  436.     errno = 0;

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

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

  439.         goto error;

  440.     if (factor)

  441.         tmp *= factor;

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

  443.         goto error;

  444.     if (dest)

  445.         *dest = tmp;

  446.     return 0;

  447.   error:

  448.     if (config) {

  449.         va_list vl;

  450.         va_start(vl, error_msg);

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

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

  453.         va_end(vl);

  454.     }

  455.     return AVERROR(EINVAL);

  456. }

  457. 

  458. static int ffserver_save_avoption(const char *opt, const char *arg, int type, FFServerConfig *config)

  459. {

  460.     static int hinted = 0;

  461.     int ret = 0;

  462.     AVDictionaryEntry *e;

  463.     const AVOption *o = NULL;

  464.     const char *option = NULL;

  465.     const char *codec_name = NULL;

  466.     char buff[1024];

  467.     AVCodecContext *ctx;

  468.     AVDictionary **dict;

  469.     enum AVCodecID guessed_codec_id;

  470. 

  471.     switch (type) {

  472.     case AV_OPT_FLAG_VIDEO_PARAM:

  473.         ctx = config->dummy_vctx;

  474.         dict = &config->video_opts;

  475.         guessed_codec_id = config->guessed_video_codec_id != AV_CODEC_ID_NONE ?

  476.                            config->guessed_video_codec_id : AV_CODEC_ID_H264;

  477.         break;

  478.     case AV_OPT_FLAG_AUDIO_PARAM:

  479.         ctx = config->dummy_actx;

  480.         dict = &config->audio_opts;

  481.         guessed_codec_id = config->guessed_audio_codec_id != AV_CODEC_ID_NONE ?

  482.                            config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  483.         break;

  484.     default:

  485.         av_assert0(0);

  486.     }

  487. 

  488.     if (strchr(opt, ':')) {

  489.         //explicit private option

  490.         snprintf(buff, sizeof(buff), "%s", opt);

  491.         codec_name = buff;

  492.         option = strchr(buff, ':');

  493.         buff[option - buff] = '\0';

  494.         option++;

  495.         if ((ret = ffserver_set_codec(ctx, codec_name, config)) < 0)

  496.             return ret;

  497.         if (!ctx->codec || !ctx->priv_data)

  498.             return -1;

  499.     } else {

  500.         option = opt;

  501.     }

  502. 

  503.     o = av_opt_find(ctx, option, NULL, type | AV_OPT_FLAG_ENCODING_PARAM, AV_OPT_SEARCH_CHILDREN);

  504.     if (!o && (!strcmp(option, "time_base")  || !strcmp(option, "pixel_format") ||

  505.                !strcmp(option, "video_size") || !strcmp(option, "codec_tag")))

  506.         o = av_opt_find(ctx, option, NULL, 0, 0);

  507.     if (!o) {

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

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

  510.         if (!hinted && ctx->codec_id == AV_CODEC_ID_NONE) {

  511.             hinted = 1;

  512.             report_config_error(config->filename, config->line_num, AV_LOG_ERROR, NULL,

  513.                                 "If '%s' is a codec private option, then prefix it with codec name, "

  514.                                 "for example '%s:%s %s' or define codec earlier.\n",

  515.                                 opt, avcodec_get_name(guessed_codec_id) ,opt, arg);

  516.         }

  517.     } else if ((ret = av_opt_set(ctx, option, arg, AV_OPT_SEARCH_CHILDREN)) < 0) {

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

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

  520.                 arg, av_err2str(ret));

  521.     } else if ((e = av_dict_get(*dict, option, NULL, 0))) {

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

  523.             return av_dict_set(dict, option, arg, AV_DICT_APPEND);

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

  525.                 &config->errors,

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

  527.                 opt, e->value);

  528.     } else if (av_dict_set(dict, option, arg, 0) < 0) {

  529.         return AVERROR(ENOMEM);

  530.     }

  531.     return 0;

  532. }

  533. 

  534. static int ffserver_save_avoption_int(const char *opt, int64_t arg,

  535.                                       int type, FFServerConfig *config)

  536. {

  537.     char buf[22];

  538.     snprintf(buf, sizeof(buf), "%"PRId64, arg);

  539.     return ffserver_save_avoption(opt, buf, type, config);

  540. }

  541. 

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

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

  544. 

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

  546.                                         const char **p)

  547. {

  548.     int val;

  549.     char arg[1024];

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

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

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

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

  554.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

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

  556.         if (val < 1024)

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

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

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

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

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

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

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

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

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

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

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

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

  569.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

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

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

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

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

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

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

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

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

  578.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

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

  580.         config->nb_max_http_connections = val;

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

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

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

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

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

  586.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

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

  588.         config->nb_max_connections = val;

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

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

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

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

  593.         int64_t llval;

  594.         char *tailp;

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

  596.         errno = 0;

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

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

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

  600.         else

  601.             config->max_bandwidth = llval;

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

  603.         if (!config->debug)

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

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

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

  607.     } else if (!av_strcasecmp(cmd, "NoDefaults")) {

  608.         config->use_defaults = 0;

  609.     } else if (!av_strcasecmp(cmd, "UseDefaults")) {

  610.         config->use_defaults = 1;

  611.     } else

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

  613.     return 0;

  614. }

  615. 

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

  617.                                       FFServerStream **pfeed)

  618. {

  619.     FFServerStream *feed;

  620.     char arg[1024];

  621.     av_assert0(pfeed);

  622.     feed = *pfeed;

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

  624.         char *q;

  625.         FFServerStream *s;

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

  627.         if (!feed)

  628.             return AVERROR(ENOMEM);

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

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

  631.         if (*q)

  632.             *q = '\0';

  633. 

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

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

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

  637.         }

  638. 

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

  640.         /* default feed file */

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

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

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

  644.         feed->is_feed = 1;

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

  646.         *pfeed = feed;

  647.         return 0;

  648.     }

  649.     av_assert0(feed);

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

  651.         int i;

  652. 

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

  654.         if (!feed->child_argv)

  655.             return AVERROR(ENOMEM);

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

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

  658.             if (!arg[0])

  659.                 break;

  660. 

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

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

  663.                 return AVERROR(ENOMEM);

  664.         }

  665. 

  666.         feed->child_argv[i] =

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

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

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

  670.                         feed->filename);

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

  672.             return AVERROR(ENOMEM);

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

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

  675.                 config->line_num);

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

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

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

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

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

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

  682.         if (!arg[0]) {

  683.             feed->truncate = 1;

  684.         } else {

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

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

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

  688.         }

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

  690.         char *p1;

  691.         double fsize;

  692. 

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

  694.         p1 = arg;

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

  696.         switch(av_toupper(*p1)) {

  697.         case 'K':

  698.             fsize *= 1024;

  699.             break;

  700.         case 'M':

  701.             fsize *= 1024 * 1024;

  702.             break;

  703.         case 'G':

  704.             fsize *= 1024 * 1024 * 1024;

  705.             break;

  706.         default:

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

  708.             break;

  709.         }

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

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

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

  713.                     FFM_PACKET_SIZE*4);

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

  715.         *pfeed = NULL;

  716.     } else {

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

  718.     }

  719.     return 0;

  720. }

  721. 

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

  723.                                         FFServerStream **pstream)

  724. {

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

  726.     FFServerStream *stream;

  727.     int val;

  728. 

  729.     av_assert0(pstream);

  730.     stream = *pstream;

  731. 

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

  733.         char *q;

  734.         FFServerStream *s;

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

  736.         if (!stream)

  737.             return AVERROR(ENOMEM);

  738.         config->dummy_actx = avcodec_alloc_context3(NULL);

  739.         config->dummy_vctx = avcodec_alloc_context3(NULL);

  740.         if (!config->dummy_vctx || !config->dummy_actx) {

  741.             av_free(stream);

  742.             avcodec_free_context(&config->dummy_vctx);

  743.             avcodec_free_context(&config->dummy_actx);

  744.             return AVERROR(ENOMEM);

  745.         }

  746.         config->dummy_actx->codec_type = AVMEDIA_TYPE_AUDIO;

  747.         config->dummy_vctx->codec_type = AVMEDIA_TYPE_VIDEO;

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

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

  750.         if (q)

  751.             *q = '\0';

  752. 

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

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

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

  756.         }

  757. 

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

  759.         if (stream->fmt) {

  760.             config->guessed_audio_codec_id = stream->fmt->audio_codec;

  761.             config->guessed_video_codec_id = stream->fmt->video_codec;

  762.         } else {

  763.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  764.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  765.         }

  766.         config->stream_use_defaults = config->use_defaults;

  767.         *pstream = stream;

  768.         return 0;

  769.     }

  770.     av_assert0(stream);

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

  772.         FFServerStream *sfeed;

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

  774.         sfeed = config->first_feed;

  775.         while (sfeed) {

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

  777.                 break;

  778.             sfeed = sfeed->next_feed;

  779.         }

  780.         if (!sfeed)

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

  782.                     stream->filename);

  783.         else

  784.             stream->feed = sfeed;

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

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

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

  788.             stream->stream_type = STREAM_TYPE_STATUS;

  789.             stream->fmt = NULL;

  790.         } else {

  791.             stream->stream_type = STREAM_TYPE_LIVE;

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

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

  794.                 strcpy(arg, "mjpeg");

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

  796.             if (!stream->fmt)

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

  798.         }

  799.         if (stream->fmt) {

  800.             config->guessed_audio_codec_id = stream->fmt->audio_codec;

  801.             config->guessed_video_codec_id = stream->fmt->video_codec;

  802.         }

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

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

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

  806.         if (!stream->ifmt)

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

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

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

  810.             ffserver_get_arg(stream->feed_filename,

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

  812.         else

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

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

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

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

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

  818.         char key[32];

  819.         int i;

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

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

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

  823.         key[i] = 0;

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

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

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

  827.             goto nomem;

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

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

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

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

  832.             goto nomem;

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

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

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

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

  837.         stream->send_on_key = 1;

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

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

  840.         ffserver_set_codec(config->dummy_actx, arg, config);

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

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

  843.         ffserver_set_codec(config->dummy_vctx, arg, config);

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

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

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

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

  848.         float f;

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

  850.         ffserver_set_float_param(&f, arg, 1000, -FLT_MAX, FLT_MAX, config,

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

  852.         if (ffserver_save_avoption_int("ab", (int64_t)lrintf(f), AV_OPT_FLAG_AUDIO_PARAM, config) < 0)

  853.             goto nomem;

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

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

  856.         if (ffserver_save_avoption("ac", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)

  857.             goto nomem;

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

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

  860.         if (ffserver_save_avoption("ar", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0)

  861.             goto nomem;

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

  863.         int minrate, maxrate;

  864.         char *dash;

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

  866.         dash = strchr(arg, '-');

  867.         if (dash) {

  868.             *dash = '\0';

  869.             dash++;

  870.             if (ffserver_set_int_param(&minrate, arg,  1000, 0, INT_MAX, config, "Invalid %s: %s", cmd, arg) >= 0 &&

  871.                 ffserver_set_int_param(&maxrate, dash, 1000, 0, INT_MAX, config, "Invalid %s: %s", cmd, arg) >= 0) {

  872.                 if (ffserver_save_avoption_int("minrate", minrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||

  873.                     ffserver_save_avoption_int("maxrate", maxrate, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  874.                 goto nomem;

  875.             }

  876.         } else

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

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

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

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

  881.         if (ffserver_save_avoption("debug", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||

  882.             ffserver_save_avoption("debug", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  883.             goto nomem;

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

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

  886.         if (ffserver_save_avoption("strict", arg, AV_OPT_FLAG_AUDIO_PARAM, config) < 0 ||

  887.             ffserver_save_avoption("strict", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  888.             goto nomem;

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

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

  891.         ffserver_set_int_param(&val, arg, 8*1024, 0, INT_MAX, config,

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

  893.         if (ffserver_save_avoption_int("bufsize", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  894.             goto nomem;

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

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

  897.         ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,

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

  899.         if (ffserver_save_avoption_int("bt", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  900.             goto nomem;

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

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

  903.         ffserver_set_int_param(&val, arg, 1000, INT_MIN, INT_MAX, config,

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

  905.         if (ffserver_save_avoption_int("b", val, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  906.            goto nomem;

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

  908.         int ret, w, h;

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

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

  911.         if (ret < 0)

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

  913.         else {

  914.             if (w % 2 || h % 2)

  915.                 WARNING("Image size is not a multiple of 2\n");

  916.             if (ffserver_save_avoption("video_size", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  917.                 goto nomem;

  918.         }

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

  920.         ffserver_get_arg(&arg[2], sizeof(arg) - 2, p);

  921.         arg[0] = '1'; arg[1] = '/';

  922.         if (ffserver_save_avoption("time_base", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  923.             goto nomem;

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

  925.         enum AVPixelFormat pix_fmt;

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

  927.         pix_fmt = av_get_pix_fmt(arg);

  928.         if (pix_fmt == AV_PIX_FMT_NONE)

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

  930.         else if (ffserver_save_avoption("pixel_format", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  931.             goto nomem;

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

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

  934.         if (ffserver_save_avoption("g", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  935.             goto nomem;

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

  937.         if (ffserver_save_avoption("g", "1", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  938.             goto nomem;

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

  940.         if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  941.             goto nomem;

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

  943.         if (ffserver_save_avoption("mbd", "+bits",  AV_OPT_FLAG_VIDEO_PARAM, config) < 0 || //FIXME remove

  944.             ffserver_save_avoption("flags", "+mv4", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  945.             goto nomem;

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

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

  948.         int ret;

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

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

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

  952.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM, config);

  953.         else

  954.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM, config);

  955.         if (ret < 0)

  956.             goto nomem;

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

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

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

  960.         if (!av_strcasecmp(cmd, "AVPresetVideo"))

  961.             ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);

  962.         else

  963.             ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);

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

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

  966.         if (strlen(arg) == 4 &&

  967.             ffserver_save_avoption_int("codec_tag", MKTAG(arg[0], arg[1], arg[2], arg[3]),

  968.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  969.             goto nomem;

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

  971.         if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  972.             goto nomem;

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

  974.         if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  975.             goto nomem;

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

  977.         if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  978.             goto nomem;

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

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

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

  982.                                "Invalid Qscale: %s\n", arg);

  983.         if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||

  984.             ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,

  985.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  986.             goto nomem;

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

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

  989.         if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  990.             goto nomem;

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

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

  993.         if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  994.             goto nomem;

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

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

  997.         if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  998.             goto nomem;

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

  1000.         ffserver_get_arg(arg, sizeof(arg), p);

  1001.         if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1002.             goto nomem;

  1003.     } else if (!av_strcasecmp(cmd, "DarkMask")) {

  1004.         ffserver_get_arg(arg, sizeof(arg), p);

  1005.         if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1006.             goto nomem;

  1007.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1008.         config->no_video = 1;

  1009.     } else if (!av_strcasecmp(cmd, "NoAudio")) {

  1010.         config->no_audio = 1;

  1011.     } else if (!av_strcasecmp(cmd, "ACL")) {

  1012.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1013.                 config->line_num);

  1014.     } else if (!av_strcasecmp(cmd, "DynamicACL")) {

  1015.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

  1016.     } else if (!av_strcasecmp(cmd, "RTSPOption")) {

  1017.         ffserver_get_arg(arg, sizeof(arg), p);

  1018.         av_freep(&stream->rtsp_option);

  1019.         stream->rtsp_option = av_strdup(arg);

  1020.     } else if (!av_strcasecmp(cmd, "MulticastAddress")) {

  1021.         ffserver_get_arg(arg, sizeof(arg), p);

  1022.         if (resolve_host(&stream->multicast_ip, arg))

  1023.             ERROR("Invalid host/IP address: %s\n", arg);

  1024.         stream->is_multicast = 1;

  1025.         stream->loop = 1; /* default is looping */

  1026.     } else if (!av_strcasecmp(cmd, "MulticastPort")) {

  1027.         ffserver_get_arg(arg, sizeof(arg), p);

  1028.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

  1029.                 "Invalid MulticastPort: %s\n", arg);

  1030.         stream->multicast_port = val;

  1031.     } else if (!av_strcasecmp(cmd, "MulticastTTL")) {

  1032.         ffserver_get_arg(arg, sizeof(arg), p);

  1033.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1034.                 "Invalid MulticastTTL: %s\n", arg);

  1035.         stream->multicast_ttl = val;

  1036.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1037.         stream->loop = 0;

  1038.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1039.         config->stream_use_defaults &= 1;

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

  1041.             if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)

  1042.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1043.             if (!config->no_audio && config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1044.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1045.                 add_codec(stream, audio_enc, config);

  1046.             }

  1047.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1048.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1049.             if (!config->no_video && config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1050.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1051.                 add_codec(stream, video_enc, config);

  1052.             }

  1053.         }

  1054.         av_dict_free(&config->video_opts);

  1055.         av_dict_free(&config->audio_opts);

  1056.         avcodec_free_context(&config->dummy_vctx);

  1057.         avcodec_free_context(&config->dummy_actx);

  1058.         *pstream = NULL;

  1059.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1060.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1061.                 p);

  1062.     } else if (!av_strcasecmp(cmd, "UseDefaults")) {

  1063.         if (config->stream_use_defaults > 1)

  1064.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1065.         config->stream_use_defaults = 3;

  1066.     } else if (!av_strcasecmp(cmd, "NoDefaults")) {

  1067.         if (config->stream_use_defaults > 1)

  1068.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1069.         config->stream_use_defaults = 2;

  1070.     } else {

  1071.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1072.     }

  1073.     return 0;

  1074.   nomem:

  1075.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1076.     av_dict_free(&config->video_opts);

  1077.     av_dict_free(&config->audio_opts);

  1078.     avcodec_free_context(&config->dummy_vctx);

  1079.     avcodec_free_context(&config->dummy_actx);

  1080.     return AVERROR(ENOMEM);

  1081. }

  1082. 

  1083. static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,

  1084.                                           FFServerStream **predirect)

  1085. {

  1086.     FFServerStream *redirect;

  1087.     av_assert0(predirect);

  1088.     redirect = *predirect;

  1089. 

  1090.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1091.         char *q;

  1092.         redirect = av_mallocz(sizeof(FFServerStream));

  1093.         if (!redirect)

  1094.             return AVERROR(ENOMEM);

  1095. 

  1096.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1097.         q = strrchr(redirect->filename, '>');

  1098.         if (*q)

  1099.             *q = '\0';

  1100.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1101.         *predirect = redirect;

  1102.         return 0;

  1103.     }

  1104.     av_assert0(redirect);

  1105.     if (!av_strcasecmp(cmd, "URL")) {

  1106.         ffserver_get_arg(redirect->feed_filename,

  1107.                 sizeof(redirect->feed_filename), p);

  1108.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1109.         if (!redirect->feed_filename[0])

  1110.             ERROR("No URL found for <Redirect>\n");

  1111.         *predirect = NULL;

  1112.     } else {

  1113.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1114.     }

  1115.     return 0;

  1116. }

  1117. 

  1118. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1119. {

  1120.     FILE *f;

  1121.     char line[1024];

  1122.     char cmd[64];

  1123.     const char *p;

  1124.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1125.     FFServerStream **last_feed, *feed = NULL;

  1126.     int ret = 0;

  1127. 

  1128.     av_assert0(config);

  1129. 

  1130.     config->line_num = 0;

  1131.     f = fopen(filename, "r");

  1132.     if (!f) {

  1133.         ret = AVERROR(errno);

  1134.         av_log(NULL, AV_LOG_ERROR,

  1135.                 "Could not open the configuration file '%s'\n", filename);

  1136.         return ret;

  1137.     }

  1138. 

  1139.     config->first_stream = NULL;

  1140.     last_stream = &config->first_stream;

  1141.     config->first_feed = NULL;

  1142.     last_feed = &config->first_feed;

  1143.     config->errors = config->warnings = 0;

  1144. 

  1145.     for(;;) {

  1146.         if (fgets(line, sizeof(line), f) == NULL)

  1147.             break;

  1148.         config->line_num++;

  1149.         p = line;

  1150.         while (av_isspace(*p))

  1151.             p++;

  1152.         if (*p == '\0' || *p == '#')

  1153.             continue;

  1154. 

  1155.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1156. 

  1157.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1158.             int opening = !av_strcasecmp(cmd, "<Feed");

  1159.             if (opening && (stream || feed || redirect)) {

  1160.                 ERROR("Already in a tag\n");

  1161.             } else {

  1162.                 if ((ret = ffserver_parse_config_feed(config, cmd, &p, &feed)) < 0)

  1163.                     break;

  1164.                 if (opening) {

  1165.                     /* add in stream list */

  1166.                     *last_stream = feed;

  1167.                     last_stream = &feed->next;

  1168.                     /* add in feed list */

  1169.                     *last_feed = feed;

  1170.                     last_feed = &feed->next_feed;

  1171.                 }

  1172.             }

  1173.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1174.             int opening = !av_strcasecmp(cmd, "<Stream");

  1175.             if (opening && (stream || feed || redirect)) {

  1176.                 ERROR("Already in a tag\n");

  1177.             } else {

  1178.                 if ((ret = ffserver_parse_config_stream(config, cmd, &p, &stream)) < 0)

  1179.                     break;

  1180.                 if (opening) {

  1181.                     /* add in stream list */

  1182.                     *last_stream = stream;

  1183.                     last_stream = &stream->next;

  1184.                 }

  1185.             }

  1186.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1187.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1188.             if (opening && (stream || feed || redirect))

  1189.                 ERROR("Already in a tag\n");

  1190.             else {

  1191.                 if ((ret = ffserver_parse_config_redirect(config, cmd, &p, &redirect)) < 0)

  1192.                     break;

  1193.                 if (opening) {

  1194.                     /* add in stream list */

  1195.                     *last_stream = redirect;

  1196.                     last_stream = &redirect->next;

  1197.                 }

  1198.             }

  1199.         } else {

  1200.             ffserver_parse_config_global(config, cmd, &p);

  1201.         }

  1202.     }

  1203.     if (stream || feed || redirect)

  1204.         ERROR("Not closed tag %s\n", stream ? "<Stream>" : (feed ? "<Feed>" : "<Redirect>"));

  1205. 

  1206.     fclose(f);

  1207.     if (ret < 0)

  1208.         return ret;

  1209.     if (config->errors)

  1210.         return AVERROR(EINVAL);

  1211.     else

  1212.         return 0;

  1213. }

  1214. 

  1215. #undef ERROR

  1216. #undef WARNING