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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, int line_num);

  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. {

  179.     AVStream *st;

  180. 

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

  182.         return;

  183. 

  184.     /* compute default parameters */

  185.     switch(av->codec_type) {

  186.     case AVMEDIA_TYPE_AUDIO:

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

  188.             av->bit_rate = 64000;

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

  190.             av->sample_rate = 22050;

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

  192.             av->channels = 1;

  193.         break;

  194.     case AVMEDIA_TYPE_VIDEO:

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

  196.             av->bit_rate = 64000;

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

  198.             av->time_base.den = 5;

  199.             av->time_base.num = 1;

  200.         }

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

  202.             av->width = 160;

  203.             av->height = 128;

  204.         }

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

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

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

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

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

  210.             av->qmin = 3;

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

  212.             av->qmax = 31;

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

  214.             av->max_qdiff = 3;

  215.         av->qcompress = 0.5;

  216.         av->qblur = 0.5;

  217. 

  218.         if (!av->nsse_weight)

  219.             av->nsse_weight = 8;

  220. 

  221.         av->frame_skip_cmp = FF_CMP_DCTMAX;

  222.         if (!av->me_method)

  223.             av->me_method = ME_EPZS;

  224. 

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

  226.         av->rc_buffer_aggressivity = 1.0;

  227. 

  228.         if (!av->rc_eq)

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

  230.         if (!av->i_quant_factor)

  231.             av->i_quant_factor = -0.8;

  232.         if (!av->b_quant_factor)

  233.             av->b_quant_factor = 1.25;

  234.         if (!av->b_quant_offset)

  235.             av->b_quant_offset = 1.25;

  236.         if (!av->rc_max_rate)

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

  238. 

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

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

  241.         }

  242. 

  243. 

  244.         break;

  245.     default:

  246.         abort();

  247.     }

  248. 

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

  250.     if (!st)

  251.         return;

  252.     st->codec = av;

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

  254. }

  255. 

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

  257. {

  258.     int ret;

  259.     AVCodec *codec = avcodec_find_encoder_by_name(codec_name);

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

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

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

  263.         return 0;

  264.     }

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

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

  267.             return ret;

  268.         ctx->codec = codec;

  269.     }

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

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

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

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

  274.     return 0;

  275. }

  276. 

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

  278. {

  279.     FILE *f=NULL;

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

  281.     int ret = 0;

  282.     AVCodecContext *avctx;

  283.     const AVCodec *codec;

  284. 

  285.     switch(type) {

  286.     case AV_OPT_FLAG_AUDIO_PARAM:

  287.         avctx = config->dummy_actx;

  288.         break;

  289.     case AV_OPT_FLAG_VIDEO_PARAM:

  290.         avctx = config->dummy_vctx;

  291.         break;

  292.     default:

  293.         av_assert0(0);

  294.     }

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

  296. 

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

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

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

  300.         return AVERROR(EINVAL);

  301.     }

  302. 

  303.     while(!feof(f)){

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

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

  306.             continue;

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

  308.         if(e){

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

  310.             ret = AVERROR(EINVAL);

  311.             break;

  312.         }

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

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

  315.         {

  316.             if (ffserver_set_codec(avctx, tmp2, config, line_num) < 0)

  317.                 break;

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

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

  320.             ret = AVERROR(EINVAL);

  321.             break;

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

  323.             break;

  324.     }

  325. 

  326.     fclose(f);

  327. 

  328.     return ret;

  329. }

  330. 

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

  332. {

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

  334. 

  335.     if (fmt) {

  336.         AVOutputFormat *stream_fmt;

  337.         char stream_format_name[64];

  338. 

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

  340.                 fmt->name);

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

  342. 

  343.         if (stream_fmt)

  344.             fmt = stream_fmt;

  345.     }

  346. 

  347.     return fmt;

  348. }

  349. 

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

  351. {

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

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

  354.     if (errors)

  355.         (*errors)++;

  356. }

  357. 

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

  359. {

  360.     va_list vl;

  361.     va_start(vl, fmt);

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

  363.     va_end(vl);

  364. }

  365. 

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

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

  368. {

  369.     int tmp;

  370.     char *tailp;

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

  372.         goto error;

  373.     errno = 0;

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

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

  376.         goto error;

  377.     if (factor) {

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

  379.             goto error;

  380.         tmp *= factor;

  381.     }

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

  383.         goto error;

  384.     if (dest)

  385.         *dest = tmp;

  386.     return 0;

  387.   error:

  388.     if (config) {

  389.         va_list vl;

  390.         va_start(vl, error_msg);

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

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

  393.         va_end(vl);

  394.     }

  395.     return AVERROR(EINVAL);

  396. }

  397. 

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

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

  400. {

  401.     double tmp;

  402.     char *tailp;

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

  404.         goto error;

  405.     errno = 0;

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

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

  408.         goto error;

  409.     if (factor)

  410.         tmp *= factor;

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

  412.         goto error;

  413.     if (dest)

  414.         *dest = tmp;

  415.     return 0;

  416.   error:

  417.     if (config) {

  418.         va_list vl;

  419.         va_start(vl, error_msg);

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

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

  422.         va_end(vl);

  423.     }

  424.     return AVERROR(EINVAL);

  425. }

  426. 

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

  428. {

  429.     static int hinted = 0;

  430.     int ret = 0;

  431.     AVDictionaryEntry *e;

  432.     const AVOption *o = NULL;

  433.     const char *option = NULL;

  434.     const char *codec_name = NULL;

  435.     char buff[1024];

  436.     AVCodecContext *ctx;

  437.     AVDictionary **dict;

  438.     enum AVCodecID guessed_codec_id;

  439. 

  440.     switch (type) {

  441.     case AV_OPT_FLAG_VIDEO_PARAM:

  442.         ctx = config->dummy_vctx;

  443.         dict = &config->video_opts;

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

  445.                            config->guessed_video_codec_id : AV_CODEC_ID_H264;

  446.         break;

  447.     case AV_OPT_FLAG_AUDIO_PARAM:

  448.         ctx = config->dummy_actx;

  449.         dict = &config->audio_opts;

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

  451.                            config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  452.         break;

  453.     default:

  454.         av_assert0(0);

  455.     }

  456. 

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

  458.         //explicit private option

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

  460.         codec_name = buff;

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

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

  463.         option++;

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

  465.             return ret;

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

  467.             return -1;

  468.     } else {

  469.         option = opt;

  470.     }

  471. 

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

  473.     if (!o) {

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

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

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

  477.             hinted = 1;

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

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

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

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

  482.         }

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

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

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

  486.                 arg, av_err2str(ret));

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

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

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

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

  491.                 &config->errors,

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

  493.                 opt, e->value);

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

  495.         return AVERROR(ENOMEM);

  496.     }

  497.     return 0;

  498. }

  499. 

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

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

  502. 

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

  504.                                         const char **p, int line_num)

  505. {

  506.     int val;

  507.     char arg[1024];

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

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

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

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

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

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

  514.         if (val < 1024)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  538.         config->nb_max_http_connections = val;

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

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

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

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

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

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

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

  546.         config->nb_max_connections = val;

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

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

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

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

  551.         int64_t llval;

  552.         char *tailp;

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

  554.         errno = 0;

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

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

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

  558.         else

  559.             config->max_bandwidth = llval;

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

  561.         if (!config->debug)

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

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

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

  565.     } else

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

  567.     return 0;

  568. }

  569. 

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

  571.                                       int line_num, FFServerStream **pfeed)

  572. {

  573.     FFServerStream *feed;

  574.     char arg[1024];

  575.     av_assert0(pfeed);

  576.     feed = *pfeed;

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

  578.         char *q;

  579.         FFServerStream *s;

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

  581.         if (!feed)

  582.             return AVERROR(ENOMEM);

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

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

  585.         if (*q)

  586.             *q = '\0';

  587. 

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

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

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

  591.         }

  592. 

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

  594.         /* default feed file */

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

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

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

  598.         feed->is_feed = 1;

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

  600.         *pfeed = feed;

  601.         return 0;

  602.     }

  603.     av_assert0(feed);

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

  605.         int i;

  606. 

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

  608.         if (!feed->child_argv)

  609.             return AVERROR(ENOMEM);

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

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

  612.             if (!arg[0])

  613.                 break;

  614. 

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

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

  617.                 return AVERROR(ENOMEM);

  618.         }

  619. 

  620.         feed->child_argv[i] =

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

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

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

  624.                         feed->filename);

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

  626.             return AVERROR(ENOMEM);

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

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

  629.                 line_num);

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

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

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

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

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

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

  636.         if (!arg[0]) {

  637.             feed->truncate = 1;

  638.         } else {

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

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

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

  642.         }

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

  644.         char *p1;

  645.         double fsize;

  646. 

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

  648.         p1 = arg;

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

  650.         switch(av_toupper(*p1)) {

  651.         case 'K':

  652.             fsize *= 1024;

  653.             break;

  654.         case 'M':

  655.             fsize *= 1024 * 1024;

  656.             break;

  657.         case 'G':

  658.             fsize *= 1024 * 1024 * 1024;

  659.             break;

  660.         default:

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

  662.             break;

  663.         }

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

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

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

  667.                     FFM_PACKET_SIZE*4);

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

  669.         *pfeed = NULL;

  670.     } else {

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

  672.     }

  673.     return 0;

  674. }

  675. 

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

  677. {

  678.     AVDictionaryEntry *e;

  679. 

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

  681.        Values are initially parsed and checked before inserting to

  682.        AVDictionary. */

  683. 

  684.     //video params

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

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

  687.                 INT_MAX, NULL, 0, NULL);

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

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

  690.                 INT_MAX, NULL, 0, NULL);

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

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

  693.                 NULL, 0, NULL);

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

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

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

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

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

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

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

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

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

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

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

  705.                 INT_MAX, NULL, 0, NULL);

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

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

  708.                 NULL, 0, NULL);

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

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

  711.                 NULL, 0, NULL);

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

  713.         int val;

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

  715.                 NULL);

  716.         enc->pix_fmt = val;

  717.     }

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

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

  720.                 NULL, 0, NULL);

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

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

  723.                 INT_MAX, NULL, 0, NULL);

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

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

  726.                 INT_MAX, NULL, 0, NULL);

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

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

  729.                 NULL, 0, NULL);

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

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

  732.                 0, NULL);

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

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

  735.                 0, NULL);

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

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

  738.                 FLT_MAX, NULL, 0, NULL);

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

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

  741.                 FLT_MAX, NULL, 0, NULL);

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

  743.         enc->flags |= CODEC_FLAG_BITEXACT;

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

  745.         enc->dct_algo  = FF_DCT_FASTINT;

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

  747.         enc->idct_algo = FF_IDCT_SIMPLE;

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

  749.         enc->mb_decision = FF_MB_DECISION_BITS;

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

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

  752.     if ((e = av_dict_get(conf, "Qscale", NULL, 0))) {

  753.         enc->flags |= CODEC_FLAG_QSCALE;

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

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

  756.     }

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

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

  759.         enc->flags |= CODEC_FLAG_4MV;

  760.     }

  761.     //audio params

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

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

  764.                 NULL, 0, NULL);

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

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

  767.                 INT_MAX, NULL, 0, NULL);

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

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

  770.                 NULL, 0, NULL);

  771. 

  772.     av_opt_set_dict2(enc->priv_data, opts, AV_OPT_SEARCH_CHILDREN);

  773.     av_opt_set_dict2(enc, opts, AV_OPT_SEARCH_CHILDREN);

  774. 

  775.     if (av_dict_count(*opts))

  776.         av_log(NULL, AV_LOG_ERROR, "Something went wrong, %d options not set!!!\n", av_dict_count(*opts));

  777. }

  778. 

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

  780.                                         int line_num, FFServerStream **pstream)

  781. {

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

  783.     FFServerStream *stream;

  784.     int val;

  785. 

  786.     av_assert0(pstream);

  787.     stream = *pstream;

  788. 

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

  790.         char *q;

  791.         FFServerStream *s;

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

  793.         if (!stream)

  794.             return AVERROR(ENOMEM);

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

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

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

  798.             av_free(stream);

  799.             avcodec_free_context(&config->dummy_vctx);

  800.             avcodec_free_context(&config->dummy_actx);

  801.             return AVERROR(ENOMEM);

  802.         }

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

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

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

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

  807.         if (q)

  808.             *q = '\0';

  809. 

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

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

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

  813.         }

  814. 

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

  816.         if (stream->fmt) {

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

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

  819.         } else {

  820.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  821.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  822.         }

  823.         *pstream = stream;

  824.         return 0;

  825.     }

  826.     av_assert0(stream);

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

  828.         FFServerStream *sfeed;

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

  830.         sfeed = config->first_feed;

  831.         while (sfeed) {

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

  833.                 break;

  834.             sfeed = sfeed->next_feed;

  835.         }

  836.         if (!sfeed)

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

  838.                     stream->filename);

  839.         else

  840.             stream->feed = sfeed;

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

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

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

  844.             stream->stream_type = STREAM_TYPE_STATUS;

  845.             stream->fmt = NULL;

  846.         } else {

  847.             stream->stream_type = STREAM_TYPE_LIVE;

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

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

  850.                 strcpy(arg, "mjpeg");

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

  852.             if (!stream->fmt)

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

  854.         }

  855.         if (stream->fmt) {

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

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

  858.         }

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

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

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

  862.         if (!stream->ifmt)

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

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

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

  866.             ffserver_get_arg(stream->feed_filename,

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

  868.         else

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

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

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

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

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

  874.         char key[32];

  875.         int i;

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

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

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

  879.         key[i] = 0;

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

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

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

  883.             goto nomem;

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

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

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

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

  888.             goto nomem;

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

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

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

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

  893.         stream->send_on_key = 1;

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

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

  896.         ffserver_set_codec(config->dummy_actx, arg, config, line_num);

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

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

  899.         ffserver_set_codec(config->dummy_vctx, arg, config, line_num);

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

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

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

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

  904.         float f;

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

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

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

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

  909.             goto nomem;

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

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

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

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

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

  915.             goto nomem;

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

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

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

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

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

  921.             goto nomem;

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

  923.         int minrate, maxrate;

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

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

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

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

  928.                 goto nomem;

  929.         } else

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

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

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

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

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

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

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

  937.             goto nomem;

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

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

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

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

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

  943.             goto nomem;

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

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

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

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

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

  949.             goto nomem;

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

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

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

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

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

  955.             goto nomem;

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

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

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

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

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

  961.            goto nomem;

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

  963.         int ret, w, h;

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

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

  966.         if (ret < 0)

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

  968.         else if ((w % 2) || (h % 2))

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

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

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

  972.             goto nomem;

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

  974.         AVRational frame_rate;

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

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

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

  978.         } else {

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

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

  981.                 goto nomem;

  982.         }

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

  984.         enum AVPixelFormat pix_fmt;

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

  986.         pix_fmt = av_get_pix_fmt(arg);

  987.         if (pix_fmt == AV_PIX_FMT_NONE)

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

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

  990.             goto nomem;

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

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

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

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

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

  996.             goto nomem;

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

  998.         if (av_dict_set(&config->video_conf, "VideoGopSize", "1", 0) < 0)

  999.             goto nomem;

  1000.     } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {

  1001.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1002.             goto nomem;

  1003.     } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {

  1004.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1005.             goto nomem;

  1006.     } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||

  1007.                !av_strcasecmp(cmd, "AVOptionAudio")) {

  1008.         int ret;

  1009.         ffserver_get_arg(arg, sizeof(arg), p);

  1010.         ffserver_get_arg(arg2, sizeof(arg2), p);

  1011.         if (!av_strcasecmp(cmd, "AVOptionVideo"))

  1012.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM, config, line_num);

  1013.         else

  1014.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM, config, line_num);

  1015.         if (ret < 0)

  1016.             goto nomem;

  1017.     } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||

  1018.                !av_strcasecmp(cmd, "AVPresetAudio")) {

  1019.         ffserver_get_arg(arg, sizeof(arg), p);

  1020.         if (!av_strcasecmp(cmd, "AVPresetVideo"))

  1021.             ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config, line_num);

  1022.         else

  1023.             ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config, line_num);

  1024.     } else if (!av_strcasecmp(cmd, "VideoTag")) {

  1025.         ffserver_get_arg(arg, sizeof(arg), p);

  1026.         if (strlen(arg) == 4) {

  1027.             if (av_dict_set(&config->video_conf, "VideoTag", arg, 0) < 0)

  1028.                 goto nomem;

  1029.         }

  1030.     } else if (!av_strcasecmp(cmd, "BitExact")) {

  1031.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1032.             goto nomem;

  1033.     } else if (!av_strcasecmp(cmd, "DctFastint")) {

  1034.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1035.             goto nomem;

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

  1037.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1038.             goto nomem;

  1039.     } else if (!av_strcasecmp(cmd, "Qscale")) {

  1040.         ffserver_get_arg(arg, sizeof(arg), p);

  1041.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1042.             goto nomem;

  1043.     } else if (!av_strcasecmp(cmd, "VideoQDiff")) {

  1044.         ffserver_get_arg(arg, sizeof(arg), p);

  1045.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  1046.                 "%s out of range\n", cmd);

  1047.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1048.             goto nomem;

  1049.     } else if (!av_strcasecmp(cmd, "VideoQMax")) {

  1050.         ffserver_get_arg(arg, sizeof(arg), p);

  1051.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  1052.                 "%s out of range\n", cmd);

  1053.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1054.             goto nomem;

  1055.     } else if (!av_strcasecmp(cmd, "VideoQMin")) {

  1056.         ffserver_get_arg(arg, sizeof(arg), p);

  1057.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  1058.                 "%s out of range\n", cmd);

  1059.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1060.             goto nomem;

  1061.     } else if (!av_strcasecmp(cmd, "LumiMask")) {

  1062.         ffserver_get_arg(arg, sizeof(arg), p);

  1063.         ffserver_set_float_param(NULL, arg, 0, -FLT_MAX, FLT_MAX, config,

  1064.                 line_num, "Invalid %s: %s", cmd, arg);

  1065.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1066.             goto nomem;

  1067.     } else if (!av_strcasecmp(cmd, "DarkMask")) {

  1068.         ffserver_get_arg(arg, sizeof(arg), p);

  1069.         ffserver_set_float_param(NULL, arg, 0, -FLT_MAX, FLT_MAX, config,

  1070.                 line_num, "Invalid %s: %s", cmd, arg);

  1071.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1072.             goto nomem;

  1073.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1074.         config->no_video = 1;

  1075.     } else if (!av_strcasecmp(cmd, "NoAudio")) {

  1076.         config->no_audio = 1;

  1077.     } else if (!av_strcasecmp(cmd, "ACL")) {

  1078.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1079.                 line_num);

  1080.     } else if (!av_strcasecmp(cmd, "DynamicACL")) {

  1081.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

  1082.     } else if (!av_strcasecmp(cmd, "RTSPOption")) {

  1083.         ffserver_get_arg(arg, sizeof(arg), p);

  1084.         av_freep(&stream->rtsp_option);

  1085.         stream->rtsp_option = av_strdup(arg);

  1086.     } else if (!av_strcasecmp(cmd, "MulticastAddress")) {

  1087.         ffserver_get_arg(arg, sizeof(arg), p);

  1088.         if (resolve_host(&stream->multicast_ip, arg))

  1089.             ERROR("Invalid host/IP address: %s\n", arg);

  1090.         stream->is_multicast = 1;

  1091.         stream->loop = 1; /* default is looping */

  1092.     } else if (!av_strcasecmp(cmd, "MulticastPort")) {

  1093.         ffserver_get_arg(arg, sizeof(arg), p);

  1094.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  1095.                 "Invalid MulticastPort: %s\n", arg);

  1096.         stream->multicast_port = val;

  1097.     } else if (!av_strcasecmp(cmd, "MulticastTTL")) {

  1098.         ffserver_get_arg(arg, sizeof(arg), p);

  1099.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1100.                 line_num, "Invalid MulticastTTL: %s\n", arg);

  1101.         stream->multicast_ttl = val;

  1102.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1103.         stream->loop = 0;

  1104.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1105.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

  1106.             if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)

  1107.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1108.             if (!config->no_audio && config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1109.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1110.                 ffserver_apply_stream_config(audio_enc, config->audio_conf, &config->audio_opts);

  1111.                 add_codec(stream, audio_enc);

  1112.             }

  1113.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1114.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1115.             if (!config->no_video && config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1116.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1117.                 ffserver_apply_stream_config(video_enc, config->video_conf, &config->video_opts);

  1118.                 add_codec(stream, video_enc);

  1119.             }

  1120.         }

  1121.         av_dict_free(&config->video_opts);

  1122.         av_dict_free(&config->video_conf);

  1123.         av_dict_free(&config->audio_opts);

  1124.         av_dict_free(&config->audio_conf);

  1125.         avcodec_free_context(&config->dummy_vctx);

  1126.         avcodec_free_context(&config->dummy_actx);

  1127.         *pstream = NULL;

  1128.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1129.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1130.                 p);

  1131.     } else {

  1132.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1133.     }

  1134.     return 0;

  1135.   nomem:

  1136.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1137.     av_dict_free(&config->video_opts);

  1138.     av_dict_free(&config->video_conf);

  1139.     av_dict_free(&config->audio_opts);

  1140.     av_dict_free(&config->audio_conf);

  1141.     avcodec_free_context(&config->dummy_vctx);

  1142.     avcodec_free_context(&config->dummy_actx);

  1143.     return AVERROR(ENOMEM);

  1144. }

  1145. 

  1146. static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,

  1147.                                           int line_num, FFServerStream **predirect)

  1148. {

  1149.     FFServerStream *redirect;

  1150.     av_assert0(predirect);

  1151.     redirect = *predirect;

  1152. 

  1153.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1154.         char *q;

  1155.         redirect = av_mallocz(sizeof(FFServerStream));

  1156.         if (!redirect)

  1157.             return AVERROR(ENOMEM);

  1158. 

  1159.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1160.         q = strrchr(redirect->filename, '>');

  1161.         if (*q)

  1162.             *q = '\0';

  1163.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1164.         *predirect = redirect;

  1165.         return 0;

  1166.     }

  1167.     av_assert0(redirect);

  1168.     if (!av_strcasecmp(cmd, "URL")) {

  1169.         ffserver_get_arg(redirect->feed_filename,

  1170.                 sizeof(redirect->feed_filename), p);

  1171.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1172.         if (!redirect->feed_filename[0])

  1173.             ERROR("No URL found for <Redirect>\n");

  1174.         *predirect = NULL;

  1175.     } else {

  1176.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1177.     }

  1178.     return 0;

  1179. }

  1180. 

  1181. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1182. {

  1183.     FILE *f;

  1184.     char line[1024];

  1185.     char cmd[64];

  1186.     const char *p;

  1187.     int line_num = 0;

  1188.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1189.     FFServerStream **last_feed, *feed = NULL;

  1190.     int ret = 0;

  1191. 

  1192.     av_assert0(config);

  1193. 

  1194.     f = fopen(filename, "r");

  1195.     if (!f) {

  1196.         ret = AVERROR(errno);

  1197.         av_log(NULL, AV_LOG_ERROR,

  1198.                 "Could not open the configuration file '%s'\n", filename);

  1199.         return ret;

  1200.     }

  1201. 

  1202.     config->first_stream = NULL;

  1203.     last_stream = &config->first_stream;

  1204.     config->first_feed = NULL;

  1205.     last_feed = &config->first_feed;

  1206.     config->errors = config->warnings = 0;

  1207. 

  1208.     for(;;) {

  1209.         if (fgets(line, sizeof(line), f) == NULL)

  1210.             break;

  1211.         line_num++;

  1212.         p = line;

  1213.         while (av_isspace(*p))

  1214.             p++;

  1215.         if (*p == '\0' || *p == '#')

  1216.             continue;

  1217. 

  1218.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1219. 

  1220.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1221.             int opening = !av_strcasecmp(cmd, "<Feed");

  1222.             if (opening && (stream || feed || redirect)) {

  1223.                 ERROR("Already in a tag\n");

  1224.             } else {

  1225.                 if ((ret = ffserver_parse_config_feed(config, cmd, &p, line_num, &feed)) < 0)

  1226.                     break;

  1227.                 if (opening) {

  1228.                     /* add in stream list */

  1229.                     *last_stream = feed;

  1230.                     last_stream = &feed->next;

  1231.                     /* add in feed list */

  1232.                     *last_feed = feed;

  1233.                     last_feed = &feed->next_feed;

  1234.                 }

  1235.             }

  1236.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1237.             int opening = !av_strcasecmp(cmd, "<Stream");

  1238.             if (opening && (stream || feed || redirect)) {

  1239.                 ERROR("Already in a tag\n");

  1240.             } else {

  1241.                 if ((ret = ffserver_parse_config_stream(config, cmd, &p, line_num, &stream)) < 0)

  1242.                     break;

  1243.                 if (opening) {

  1244.                     /* add in stream list */

  1245.                     *last_stream = stream;

  1246.                     last_stream = &stream->next;

  1247.                 }

  1248.             }

  1249.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1250.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1251.             if (opening && (stream || feed || redirect))

  1252.                 ERROR("Already in a tag\n");

  1253.             else {

  1254.                 if ((ret = ffserver_parse_config_redirect(config, cmd, &p, line_num, &redirect)) < 0)

  1255.                     break;

  1256.                 if (opening) {

  1257.                     /* add in stream list */

  1258.                     *last_stream = redirect;

  1259.                     last_stream = &redirect->next;

  1260.                 }

  1261.             }

  1262.         } else {

  1263.             ffserver_parse_config_global(config, cmd, &p, line_num);

  1264.         }

  1265.     }

  1266.     if (stream || feed || redirect)

  1267.         ERROR("Not closed tag %s\n", stream ? "<Stream>" : (feed ? "<Feed>" : "<Redirect>"));

  1268. 

  1269.     fclose(f);

  1270.     if (ret < 0)

  1271.         return ret;

  1272.     if (config->errors)

  1273.         return AVERROR(EINVAL);

  1274.     else

  1275.         return 0;

  1276. }

  1277. 

  1278. #undef ERROR

  1279. #undef WARNING