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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(AVCodecContext *ctx, const char *opt, const char *arg,

  35.                                   AVDictionary **dict, int type, 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, AVCodecContext *avctx, 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.     AVCodec *codec = avcodec_find_encoder(avctx->codec_id);

  283. 

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

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

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

  287.         return AVERROR(EINVAL);

  288.     }

  289. 

  290.     while(!feof(f)){

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

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

  293.             continue;

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

  295.         if(e){

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

  297.             ret = AVERROR(EINVAL);

  298.             break;

  299.         }

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

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

  302.         {

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

  304.                 break;

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

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

  307.             ret = AVERROR(EINVAL);

  308.             break;

  309.         } else {

  310.             int type;

  311.             AVDictionary **opts;

  312. 

  313.             switch(avctx->codec_type) {

  314.             case AVMEDIA_TYPE_AUDIO:

  315.                 type = AV_OPT_FLAG_AUDIO_PARAM;

  316.                 opts = &config->audio_opts;

  317.                 break;

  318.             case AVMEDIA_TYPE_VIDEO:

  319.                 type = AV_OPT_FLAG_VIDEO_PARAM;

  320.                 opts = &config->video_opts;

  321.                 break;

  322.             default:

  323.                 ret = AVERROR(EINVAL);

  324.                 goto exit;

  325.             }

  326.             if (ffserver_save_avoption(avctx, tmp, tmp2, opts, type, config, line_num) < 0)

  327.                 break;

  328.         }

  329.     }

  330. 

  331.   exit:

  332.     fclose(f);

  333. 

  334.     return ret;

  335. }

  336. 

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

  338. {

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

  340. 

  341.     if (fmt) {

  342.         AVOutputFormat *stream_fmt;

  343.         char stream_format_name[64];

  344. 

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

  346.                 fmt->name);

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

  348. 

  349.         if (stream_fmt)

  350.             fmt = stream_fmt;

  351.     }

  352. 

  353.     return fmt;

  354. }

  355. 

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

  357. {

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

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

  360.     if (errors)

  361.         (*errors)++;

  362. }

  363. 

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

  365. {

  366.     va_list vl;

  367.     va_start(vl, fmt);

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

  369.     va_end(vl);

  370. }

  371. 

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

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

  374. {

  375.     int tmp;

  376.     char *tailp;

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

  378.         goto error;

  379.     errno = 0;

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

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

  382.         goto error;

  383.     if (factor) {

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

  385.             goto error;

  386.         tmp *= factor;

  387.     }

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

  389.         goto error;

  390.     if (dest)

  391.         *dest = tmp;

  392.     return 0;

  393.   error:

  394.     if (config) {

  395.         va_list vl;

  396.         va_start(vl, error_msg);

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

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

  399.         va_end(vl);

  400.     }

  401.     return AVERROR(EINVAL);

  402. }

  403. 

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

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

  406. {

  407.     double tmp;

  408.     char *tailp;

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

  410.         goto error;

  411.     errno = 0;

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

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

  414.         goto error;

  415.     if (factor)

  416.         tmp *= factor;

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

  418.         goto error;

  419.     if (dest)

  420.         *dest = tmp;

  421.     return 0;

  422.   error:

  423.     if (config) {

  424.         va_list vl;

  425.         va_start(vl, error_msg);

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

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

  428.         va_end(vl);

  429.     }

  430.     return AVERROR(EINVAL);

  431. }

  432. 

  433. static int ffserver_save_avoption(AVCodecContext *ctx, const char *opt, const char *arg, AVDictionary **dict,

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

  435. {

  436.     static int hinted = 0;

  437.     int ret = 0;

  438.     AVDictionaryEntry *e;

  439.     const AVOption *o = NULL;

  440.     const char *option = NULL;

  441.     const char *codec_name = NULL;

  442.     char buff[1024];

  443. 

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

  445.         //explicit private option

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

  447.         codec_name = buff;

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

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

  450.         option++;

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

  452.             return ret;

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

  454.             return -1;

  455.     } else {

  456.         option = opt;

  457.     }

  458. 

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

  460.     if (!o) {

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

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

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

  464.             enum AVCodecID id;

  465.             hinted = 1;

  466.             switch(ctx->codec_type) {

  467.             case AVMEDIA_TYPE_AUDIO:

  468.                 id = config->guessed_audio_codec_id != AV_CODEC_ID_NONE ? config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  469.                 break;

  470.             case AVMEDIA_TYPE_VIDEO:

  471.                 id = config->guessed_video_codec_id != AV_CODEC_ID_NONE ? config->guessed_video_codec_id : AV_CODEC_ID_H264;

  472.                 break;

  473.             default:

  474.                 break;

  475.             }

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

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

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

  479.                                 opt, avcodec_get_name(id) ,opt, arg);

  480. 

  481.         }

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

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

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

  485.                 arg, av_err2str(ret));

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

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

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

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

  490.                 &config->errors,

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

  492.                 opt, e->value);

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

  494.         return AVERROR(ENOMEM);

  495.     }

  496.     return 0;

  497. }

  498. 

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

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

  501. 

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

  503.                                         const char **p, int line_num)

  504. {

  505.     int val;

  506.     char arg[1024];

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

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

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

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

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

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

  513.         if (val < 1024)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  537.         config->nb_max_http_connections = val;

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

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

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

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

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

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

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

  545.         config->nb_max_connections = val;

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

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

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

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

  550.         int64_t llval;

  551.         char *tailp;

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

  553.         errno = 0;

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

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

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

  557.         else

  558.             config->max_bandwidth = llval;

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

  560.         if (!config->debug)

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

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

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

  564.     } else

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

  566.     return 0;

  567. }

  568. 

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

  570.                                       int line_num, FFServerStream **pfeed)

  571. {

  572.     FFServerStream *feed;

  573.     char arg[1024];

  574.     av_assert0(pfeed);

  575.     feed = *pfeed;

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

  577.         char *q;

  578.         FFServerStream *s;

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

  580.         if (!feed)

  581.             return AVERROR(ENOMEM);

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

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

  584.         if (*q)

  585.             *q = '\0';

  586. 

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

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

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

  590.         }

  591. 

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

  593.         /* default feed file */

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

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

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

  597.         feed->is_feed = 1;

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

  599.         *pfeed = feed;

  600.         return 0;

  601.     }

  602.     av_assert0(feed);

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

  604.         int i;

  605. 

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

  607.         if (!feed->child_argv)

  608.             return AVERROR(ENOMEM);

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

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

  611.             if (!arg[0])

  612.                 break;

  613. 

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

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

  616.                 return AVERROR(ENOMEM);

  617.         }

  618. 

  619.         feed->child_argv[i] =

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

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

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

  623.                         feed->filename);

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

  625.             return AVERROR(ENOMEM);

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

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

  628.                 line_num);

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

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

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

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

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

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

  635.         if (!arg[0]) {

  636.             feed->truncate = 1;

  637.         } else {

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

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

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

  641.         }

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

  643.         char *p1;

  644.         double fsize;

  645. 

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

  647.         p1 = arg;

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

  649.         switch(av_toupper(*p1)) {

  650.         case 'K':

  651.             fsize *= 1024;

  652.             break;

  653.         case 'M':

  654.             fsize *= 1024 * 1024;

  655.             break;

  656.         case 'G':

  657.             fsize *= 1024 * 1024 * 1024;

  658.             break;

  659.         default:

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

  661.             break;

  662.         }

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

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

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

  666.                     FFM_PACKET_SIZE*4);

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

  668.         *pfeed = NULL;

  669.     } else {

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

  671.     }

  672.     return 0;

  673. }

  674. 

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

  676. {

  677.     AVDictionaryEntry *e;

  678. 

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

  680.        Values are initially parsed and checked before inserting to

  681.        AVDictionary. */

  682. 

  683.     //video params

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

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

  686.                 INT_MAX, NULL, 0, NULL);

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

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

  689.                 INT_MAX, NULL, 0, NULL);

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

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

  692.                 NULL, 0, NULL);

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

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

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

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

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

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

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

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

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

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

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

  704.                 INT_MAX, NULL, 0, NULL);

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

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

  707.                 NULL, 0, NULL);

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

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

  710.                 NULL, 0, NULL);

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

  712.         int val;

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

  714.                 NULL);

  715.         enc->pix_fmt = val;

  716.     }

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

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

  719.                 NULL, 0, NULL);

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

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

  722.                 INT_MAX, NULL, 0, NULL);

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

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

  725.                 INT_MAX, NULL, 0, NULL);

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

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

  728.                 NULL, 0, NULL);

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

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

  731.                 0, NULL);

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

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

  734.                 0, NULL);

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

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

  737.                 FLT_MAX, NULL, 0, NULL);

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

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

  740.                 FLT_MAX, NULL, 0, NULL);

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

  742.         enc->flags |= CODEC_FLAG_BITEXACT;

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

  744.         enc->dct_algo  = FF_DCT_FASTINT;

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

  746.         enc->idct_algo = FF_IDCT_SIMPLE;

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

  748.         enc->mb_decision = FF_MB_DECISION_BITS;

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

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

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

  752.         enc->flags |= CODEC_FLAG_QSCALE;

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

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

  755.     }

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

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

  758.         enc->flags |= CODEC_FLAG_4MV;

  759.     }

  760.     //audio params

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

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

  763.                 NULL, 0, NULL);

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

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

  766.                 INT_MAX, NULL, 0, NULL);

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

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

  769.                 NULL, 0, NULL);

  770. 

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

  772.     av_opt_set_dict2(enc, opts, AV_OPT_SEARCH_CHILDREN);

  773. 

  774.     if (av_dict_count(*opts))

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

  776. }

  777. 

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

  779.                                         int line_num, FFServerStream **pstream)

  780. {

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

  782.     FFServerStream *stream;

  783.     int val;

  784. 

  785.     av_assert0(pstream);

  786.     stream = *pstream;

  787. 

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

  789.         char *q;

  790.         FFServerStream *s;

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

  792.         if (!stream)

  793.             return AVERROR(ENOMEM);

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

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

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

  797.             av_free(stream);

  798.             avcodec_free_context(&config->dummy_vctx);

  799.             avcodec_free_context(&config->dummy_actx);

  800.             return AVERROR(ENOMEM);

  801.         }

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

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

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

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

  806.         if (q)

  807.             *q = '\0';

  808. 

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

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

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

  812.         }

  813. 

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

  815.         if (stream->fmt) {

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

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

  818.         } else {

  819.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  820.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  821.         }

  822.         *pstream = stream;

  823.         return 0;

  824.     }

  825.     av_assert0(stream);

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

  827.         FFServerStream *sfeed;

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

  829.         sfeed = config->first_feed;

  830.         while (sfeed) {

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

  832.                 break;

  833.             sfeed = sfeed->next_feed;

  834.         }

  835.         if (!sfeed)

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

  837.                     stream->filename);

  838.         else

  839.             stream->feed = sfeed;

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

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

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

  843.             stream->stream_type = STREAM_TYPE_STATUS;

  844.             stream->fmt = NULL;

  845.         } else {

  846.             stream->stream_type = STREAM_TYPE_LIVE;

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

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

  849.                 strcpy(arg, "mjpeg");

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

  851.             if (!stream->fmt)

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

  853.         }

  854.         if (stream->fmt) {

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

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

  857.         }

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

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

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

  861.         if (!stream->ifmt)

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

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

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

  865.             ffserver_get_arg(stream->feed_filename,

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

  867.         else

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

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

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

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

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

  873.         char key[32];

  874.         int i;

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

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

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

  878.         key[i] = 0;

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

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

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

  882.             goto nomem;

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

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

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

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

  887.             goto nomem;

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

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

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

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

  892.         stream->send_on_key = 1;

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

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

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

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

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

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

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

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

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

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

  903.         float f;

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

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

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

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

  908.             goto nomem;

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

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

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

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

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

  914.             goto nomem;

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

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

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

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

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

  920.             goto nomem;

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

  922.         int minrate, maxrate;

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

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

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

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

  927.                 goto nomem;

  928.         } else

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

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

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

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

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

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

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

  936.             goto nomem;

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

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

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

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

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

  942.             goto nomem;

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

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

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

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

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

  948.             goto nomem;

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

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

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

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

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

  954.             goto nomem;

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

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

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

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

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

  960.            goto nomem;

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

  962.         int ret, w, h;

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

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

  965.         if (ret < 0)

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

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

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

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

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

  971.             goto nomem;

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

  973.         AVRational frame_rate;

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

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

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

  977.         } else {

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

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

  980.                 goto nomem;

  981.         }

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

  983.         enum AVPixelFormat pix_fmt;

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

  985.         pix_fmt = av_get_pix_fmt(arg);

  986.         if (pix_fmt == AV_PIX_FMT_NONE)

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

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

  989.             goto nomem;

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

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

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

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

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

  995.             goto nomem;

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

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

  998.             goto nomem;

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

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

  1001.             goto nomem;

  1002.     } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {

  1003.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1004.             goto nomem;

  1005.     } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||

  1006.                !av_strcasecmp(cmd, "AVOptionAudio")) {

  1007.         int ret;

  1008.         ffserver_get_arg(arg, sizeof(arg), p);

  1009.         ffserver_get_arg(arg2, sizeof(arg2), p);

  1010.         if (!av_strcasecmp(cmd, "AVOptionVideo"))

  1011.             ret = ffserver_save_avoption(config->dummy_vctx, arg, arg2, &config->video_opts,

  1012.                                          AV_OPT_FLAG_VIDEO_PARAM ,config, line_num);

  1013.         else

  1014.             ret = ffserver_save_avoption(config->dummy_actx, arg, arg2, &config->audio_opts,

  1015.                                          AV_OPT_FLAG_AUDIO_PARAM ,config, line_num);

  1016.         if (ret < 0)

  1017.             goto nomem;

  1018.     } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||

  1019.                !av_strcasecmp(cmd, "AVPresetAudio")) {

  1020.         ffserver_get_arg(arg, sizeof(arg), p);

  1021.         if (!av_strcasecmp(cmd, "AVPresetVideo"))

  1022.             ffserver_opt_preset(arg, config->dummy_vctx, config, line_num);

  1023.         else

  1024.             ffserver_opt_preset(arg, config->dummy_actx, config, line_num);

  1025.     } else if (!av_strcasecmp(cmd, "VideoTag")) {

  1026.         ffserver_get_arg(arg, sizeof(arg), p);

  1027.         if (strlen(arg) == 4) {

  1028.             if (av_dict_set(&config->video_conf, "VideoTag", arg, 0) < 0)

  1029.                 goto nomem;

  1030.         }

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

  1032.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1033.             goto nomem;

  1034.     } else if (!av_strcasecmp(cmd, "DctFastint")) {

  1035.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1036.             goto nomem;

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

  1038.         if (av_dict_set(&config->video_conf, cmd, "", 0) < 0)

  1039.             goto nomem;

  1040.     } else if (!av_strcasecmp(cmd, "Qscale")) {

  1041.         ffserver_get_arg(arg, sizeof(arg), p);

  1042.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1043.             goto nomem;

  1044.     } else if (!av_strcasecmp(cmd, "VideoQDiff")) {

  1045.         ffserver_get_arg(arg, sizeof(arg), p);

  1046.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  1047.                 "%s out of range\n", cmd);

  1048.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1049.             goto nomem;

  1050.     } else if (!av_strcasecmp(cmd, "VideoQMax")) {

  1051.         ffserver_get_arg(arg, sizeof(arg), p);

  1052.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  1053.                 "%s out of range\n", cmd);

  1054.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1055.             goto nomem;

  1056.     } else if (!av_strcasecmp(cmd, "VideoQMin")) {

  1057.         ffserver_get_arg(arg, sizeof(arg), p);

  1058.         ffserver_set_int_param(NULL, arg, 0, 1, 31, config, line_num,

  1059.                 "%s out of range\n", cmd);

  1060.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1061.             goto nomem;

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

  1063.         ffserver_get_arg(arg, sizeof(arg), p);

  1064.         ffserver_set_float_param(NULL, arg, 0, -FLT_MAX, FLT_MAX, config,

  1065.                 line_num, "Invalid %s: %s", cmd, arg);

  1066.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1067.             goto nomem;

  1068.     } else if (!av_strcasecmp(cmd, "DarkMask")) {

  1069.         ffserver_get_arg(arg, sizeof(arg), p);

  1070.         ffserver_set_float_param(NULL, arg, 0, -FLT_MAX, FLT_MAX, config,

  1071.                 line_num, "Invalid %s: %s", cmd, arg);

  1072.         if (av_dict_set(&config->video_conf, cmd, arg, 0) < 0)

  1073.             goto nomem;

  1074.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1075.         config->no_video = 1;

  1076.     } else if (!av_strcasecmp(cmd, "NoAudio")) {

  1077.         config->no_audio = 1;

  1078.     } else if (!av_strcasecmp(cmd, "ACL")) {

  1079.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1080.                 line_num);

  1081.     } else if (!av_strcasecmp(cmd, "DynamicACL")) {

  1082.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

  1083.     } else if (!av_strcasecmp(cmd, "RTSPOption")) {

  1084.         ffserver_get_arg(arg, sizeof(arg), p);

  1085.         av_freep(&stream->rtsp_option);

  1086.         stream->rtsp_option = av_strdup(arg);

  1087.     } else if (!av_strcasecmp(cmd, "MulticastAddress")) {

  1088.         ffserver_get_arg(arg, sizeof(arg), p);

  1089.         if (resolve_host(&stream->multicast_ip, arg))

  1090.             ERROR("Invalid host/IP address: %s\n", arg);

  1091.         stream->is_multicast = 1;

  1092.         stream->loop = 1; /* default is looping */

  1093.     } else if (!av_strcasecmp(cmd, "MulticastPort")) {

  1094.         ffserver_get_arg(arg, sizeof(arg), p);

  1095.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config, line_num,

  1096.                 "Invalid MulticastPort: %s\n", arg);

  1097.         stream->multicast_port = val;

  1098.     } else if (!av_strcasecmp(cmd, "MulticastTTL")) {

  1099.         ffserver_get_arg(arg, sizeof(arg), p);

  1100.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1101.                 line_num, "Invalid MulticastTTL: %s\n", arg);

  1102.         stream->multicast_ttl = val;

  1103.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1104.         stream->loop = 0;

  1105.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1106.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

  1107.             if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)

  1108.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1109.             if (!config->no_audio && config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1110.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1111.                 ffserver_apply_stream_config(audio_enc, config->audio_conf, &config->audio_opts);

  1112.                 add_codec(stream, audio_enc);

  1113.             }

  1114.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1115.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1116.             if (!config->no_video && config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1117.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1118.                 ffserver_apply_stream_config(video_enc, config->video_conf, &config->video_opts);

  1119.                 add_codec(stream, video_enc);

  1120.             }

  1121.         }

  1122.         av_dict_free(&config->video_opts);

  1123.         av_dict_free(&config->video_conf);

  1124.         av_dict_free(&config->audio_opts);

  1125.         av_dict_free(&config->audio_conf);

  1126.         avcodec_free_context(&config->dummy_vctx);

  1127.         avcodec_free_context(&config->dummy_actx);

  1128.         *pstream = NULL;

  1129.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1130.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1131.                 p);

  1132.     } else {

  1133.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1134.     }

  1135.     return 0;

  1136.   nomem:

  1137.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1138.     av_dict_free(&config->video_opts);

  1139.     av_dict_free(&config->video_conf);

  1140.     av_dict_free(&config->audio_opts);

  1141.     av_dict_free(&config->audio_conf);

  1142.     avcodec_free_context(&config->dummy_vctx);

  1143.     avcodec_free_context(&config->dummy_actx);

  1144.     return AVERROR(ENOMEM);

  1145. }

  1146. 

  1147. static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,

  1148.                                           int line_num, FFServerStream **predirect)

  1149. {

  1150.     FFServerStream *redirect;

  1151.     av_assert0(predirect);

  1152.     redirect = *predirect;

  1153. 

  1154.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1155.         char *q;

  1156.         redirect = av_mallocz(sizeof(FFServerStream));

  1157.         if (!redirect)

  1158.             return AVERROR(ENOMEM);

  1159. 

  1160.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1161.         q = strrchr(redirect->filename, '>');

  1162.         if (*q)

  1163.             *q = '\0';

  1164.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1165.         *predirect = redirect;

  1166.         return 0;

  1167.     }

  1168.     av_assert0(redirect);

  1169.     if (!av_strcasecmp(cmd, "URL")) {

  1170.         ffserver_get_arg(redirect->feed_filename,

  1171.                 sizeof(redirect->feed_filename), p);

  1172.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1173.         if (!redirect->feed_filename[0])

  1174.             ERROR("No URL found for <Redirect>\n");

  1175.         *predirect = NULL;

  1176.     } else {

  1177.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1178.     }

  1179.     return 0;

  1180. }

  1181. 

  1182. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1183. {

  1184.     FILE *f;

  1185.     char line[1024];

  1186.     char cmd[64];

  1187.     const char *p;

  1188.     int line_num = 0;

  1189.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1190.     FFServerStream **last_feed, *feed = NULL;

  1191.     int ret = 0;

  1192. 

  1193.     av_assert0(config);

  1194. 

  1195.     f = fopen(filename, "r");

  1196.     if (!f) {

  1197.         ret = AVERROR(errno);

  1198.         av_log(NULL, AV_LOG_ERROR,

  1199.                 "Could not open the configuration file '%s'\n", filename);

  1200.         return ret;

  1201.     }

  1202. 

  1203.     config->first_stream = NULL;

  1204.     last_stream = &config->first_stream;

  1205.     config->first_feed = NULL;

  1206.     last_feed = &config->first_feed;

  1207.     config->errors = config->warnings = 0;

  1208. 

  1209.     for(;;) {

  1210.         if (fgets(line, sizeof(line), f) == NULL)

  1211.             break;

  1212.         line_num++;

  1213.         p = line;

  1214.         while (av_isspace(*p))

  1215.             p++;

  1216.         if (*p == '\0' || *p == '#')

  1217.             continue;

  1218. 

  1219.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1220. 

  1221.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1222.             int opening = !av_strcasecmp(cmd, "<Feed");

  1223.             if (opening && (stream || feed || redirect)) {

  1224.                 ERROR("Already in a tag\n");

  1225.             } else {

  1226.                 if ((ret = ffserver_parse_config_feed(config, cmd, &p, line_num, &feed)) < 0)

  1227.                     break;

  1228.                 if (opening) {

  1229.                     /* add in stream list */

  1230.                     *last_stream = feed;

  1231.                     last_stream = &feed->next;

  1232.                     /* add in feed list */

  1233.                     *last_feed = feed;

  1234.                     last_feed = &feed->next_feed;

  1235.                 }

  1236.             }

  1237.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1238.             int opening = !av_strcasecmp(cmd, "<Stream");

  1239.             if (opening && (stream || feed || redirect)) {

  1240.                 ERROR("Already in a tag\n");

  1241.             } else {

  1242.                 if ((ret = ffserver_parse_config_stream(config, cmd, &p, line_num, &stream)) < 0)

  1243.                     break;

  1244.                 if (opening) {

  1245.                     /* add in stream list */

  1246.                     *last_stream = stream;

  1247.                     last_stream = &stream->next;

  1248.                 }

  1249.             }

  1250.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1251.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1252.             if (opening && (stream || feed || redirect))

  1253.                 ERROR("Already in a tag\n");

  1254.             else {

  1255.                 if ((ret = ffserver_parse_config_redirect(config, cmd, &p, line_num, &redirect)) < 0)

  1256.                     break;

  1257.                 if (opening) {

  1258.                     /* add in stream list */

  1259.                     *last_stream = redirect;

  1260.                     last_stream = &redirect->next;

  1261.                 }

  1262.             }

  1263.         } else {

  1264.             ffserver_parse_config_global(config, cmd, &p, line_num);

  1265.         }

  1266.     }

  1267.     if (stream || feed || redirect)

  1268.         ERROR("Not closed tag %s\n", stream ? "<Stream>" : (feed ? "<Feed>" : "<Redirect>"));

  1269. 

  1270.     fclose(f);

  1271.     if (ret < 0)

  1272.         return ret;

  1273.     if (config->errors)

  1274.         return AVERROR(EINVAL);

  1275.     else

  1276.         return 0;

  1277. }

  1278. 

  1279. #undef ERROR

  1280. #undef WARNING