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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. #define MAX_CHILD_ARGS 64

  35. 

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

  37.                                   FFServerConfig *config);

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

  39.                                  int log_level, int *errors, const char *fmt,

  40.                                  va_list vl);

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

  42.                                 int log_level, int *errors, const char *fmt,

  43.                                 ...);

  44. 

  45. #define ERROR(...) report_config_error(config->filename, config->line_num,\

  46.                                        AV_LOG_ERROR, &config->errors, __VA_ARGS__)

  47. #define WARNING(...) report_config_error(config->filename, config->line_num,\

  48.                                          AV_LOG_WARNING, &config->warnings, __VA_ARGS__)

  49. 

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

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

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

  53. {

  54. 

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

  56. #if HAVE_GETADDRINFO

  57.         struct addrinfo *ai, *cur;

  58.         struct addrinfo hints = { 0 };

  59.         hints.ai_family = AF_INET;

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

  61.             return -1;

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

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

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

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

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

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

  68.                 freeaddrinfo(ai);

  69.                 return 0;

  70.             }

  71.         }

  72.         freeaddrinfo(ai);

  73.         return -1;

  74. #else

  75.         struct hostent *hp;

  76.         hp = gethostbyname(hostname);

  77.         if (!hp)

  78.             return -1;

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

  80. #endif

  81.     }

  82.     return 0;

  83. }

  84. 

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

  86. {

  87.     const char *p;

  88.     char *q;

  89.     int quote = 0;

  90. 

  91.     p = *pp;

  92.     q = buf;

  93. 

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

  95. 

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

  97.         quote = *p++;

  98. 

  99.     while (*p != '\0') {

  100.         if (quote && *p == quote || !quote && av_isspace(*p))

  101.             break;

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

  103.             *q++ = *p;

  104.         p++;

  105.     }

  106. 

  107.     *q = '\0';

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

  109.         p++;

  110.     *pp = p;

  111. }

  112. 

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

  114.                             FFServerIPAddressACL *ext_acl,

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

  116. {

  117.     char arg[1024];

  118.     FFServerIPAddressACL acl;

  119.     FFServerIPAddressACL *nacl;

  120.     FFServerIPAddressACL **naclp;

  121. 

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

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

  124.         acl.action = IP_ALLOW;

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

  126.         acl.action = IP_DENY;

  127.     else {

  128.         fprintf(stderr, "%s:%d: ACL action '%s' should be ALLOW or DENY.\n",

  129.                 filename, line_num, arg);

  130.         goto bail;

  131.     }

  132. 

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

  134. 

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

  136.         fprintf(stderr,

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

  138.                 filename, line_num, arg);

  139.         goto bail;

  140.     }

  141. 

  142.     acl.last = acl.first;

  143. 

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

  145. 

  146.     if (arg[0]) {

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

  148.             fprintf(stderr,

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

  150.                     filename, line_num, arg);

  151.             goto bail;

  152.         }

  153.     }

  154. 

  155.     nacl = av_mallocz(sizeof(*nacl));

  156.     naclp = 0;

  157. 

  158.     acl.next = 0;

  159.     *nacl = acl;

  160. 

  161.     if (stream)

  162.         naclp = &stream->acl;

  163.     else if (feed)

  164.         naclp = &feed->acl;

  165.     else if (ext_acl)

  166.         naclp = &ext_acl;

  167.     else

  168.         fprintf(stderr, "%s:%d: ACL found not in <Stream> or <Feed>\n",

  169.                 filename, line_num);

  170. 

  171.     if (naclp) {

  172.         while (*naclp)

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

  174. 

  175.         *naclp = nacl;

  176.     } else

  177.         av_free(nacl);

  178. 

  179. bail:

  180.   return;

  181. 

  182. }

  183. 

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

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

  186.                       FFServerConfig *config)

  187. {

  188.     AVStream *st;

  189.     AVDictionary **opts, *recommended = NULL;

  190.     char *enc_config;

  191. 

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

  193.         return;

  194. 

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

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

  197.     av_dict_copy(&recommended, *opts, 0);

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

  199.     av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);

  200. 

  201.     if (av_dict_count(*opts))

  202.         av_log(NULL, AV_LOG_WARNING,

  203.                "Something is wrong, %d options are not set!\n",

  204.                av_dict_count(*opts));

  205. 

  206.     if (!config->stream_use_defaults) {

  207.         switch(av->codec_type) {

  208.         case AVMEDIA_TYPE_AUDIO:

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

  210.                 report_config_error(config->filename, config->line_num,

  211.                                     AV_LOG_ERROR, &config->errors,

  212.                                     "audio bit rate is not set\n");

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

  214.                 report_config_error(config->filename, config->line_num,

  215.                                     AV_LOG_ERROR, &config->errors,

  216.                                     "audio sample rate is not set\n");

  217.             break;

  218.         case AVMEDIA_TYPE_VIDEO:

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

  220.                 report_config_error(config->filename, config->line_num,

  221.                                     AV_LOG_ERROR, &config->errors,

  222.                                     "video size is not set\n");

  223.             break;

  224.         default:

  225.             av_assert0(0);

  226.         }

  227.         goto done;

  228.     }

  229. 

  230.     /* stream_use_defaults = true */

  231. 

  232.     /* compute default parameters */

  233.     switch(av->codec_type) {

  234.     case AVMEDIA_TYPE_AUDIO:

  235.         if (!av_dict_get(recommended, "b", NULL, 0)) {

  236.             av->bit_rate = 64000;

  237.             av_dict_set_int(&recommended, "b", av->bit_rate, 0);

  238.             WARNING("Setting default value for audio bit rate = %d. "

  239.                     "Use NoDefaults to disable it.\n",

  240.                     av->bit_rate);

  241.         }

  242.         if (!av_dict_get(recommended, "ar", NULL, 0)) {

  243.             av->sample_rate = 22050;

  244.             av_dict_set_int(&recommended, "ar", av->sample_rate, 0);

  245.             WARNING("Setting default value for audio sample rate = %d. "

  246.                     "Use NoDefaults to disable it.\n",

  247.                     av->sample_rate);

  248.         }

  249.         if (!av_dict_get(recommended, "ac", NULL, 0)) {

  250.             av->channels = 1;

  251.             av_dict_set_int(&recommended, "ac", av->channels, 0);

  252.             WARNING("Setting default value for audio channel count = %d. "

  253.                     "Use NoDefaults to disable it.\n",

  254.                     av->channels);

  255.         }

  256.         break;

  257.     case AVMEDIA_TYPE_VIDEO:

  258.         if (!av_dict_get(recommended, "b", NULL, 0)) {

  259.             av->bit_rate = 64000;

  260.             av_dict_set_int(&recommended, "b", av->bit_rate, 0);

  261.             WARNING("Setting default value for video bit rate = %d. "

  262.                     "Use NoDefaults to disable it.\n",

  263.                     av->bit_rate);

  264.         }

  265.         if (!av_dict_get(recommended, "time_base", NULL, 0)){

  266.             av->time_base.den = 5;

  267.             av->time_base.num = 1;

  268.             av_dict_set(&recommended, "time_base", "1/5", 0);

  269.             WARNING("Setting default value for video frame rate = %d. "

  270.                     "Use NoDefaults to disable it.\n",

  271.                     av->time_base.den);

  272.         }

  273.         if (!av_dict_get(recommended, "video_size", NULL, 0)) {

  274.             av->width = 160;

  275.             av->height = 128;

  276.             av_dict_set(&recommended, "video_size", "160x128", 0);

  277.             WARNING("Setting default value for video size = %dx%d. "

  278.                     "Use NoDefaults to disable it.\n",

  279.                     av->width, av->height);

  280.         }

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

  282.         if (!av_dict_get(recommended, "bt", NULL, 0)) {

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

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

  285.             av_dict_set_int(&recommended, "bt", av->bit_rate_tolerance, 0);

  286.             WARNING("Setting default value for video bit rate tolerance = %d. "

  287.                     "Use NoDefaults to disable it.\n",

  288.                     av->bit_rate_tolerance);

  289.         }

  290. 

  291.         if (!av_dict_get(recommended, "rc_eq", NULL, 0)) {

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

  293.             av_dict_set(&recommended, "rc_eq", "tex^qComp", 0);

  294.             WARNING("Setting default value for video rate control equation = "

  295.                     "%s. Use NoDefaults to disable it.\n",

  296.                     av->rc_eq);

  297.         }

  298.         if (!av_dict_get(recommended, "maxrate", NULL, 0)) {

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

  300.             av_dict_set_int(&recommended, "maxrate", av->rc_max_rate, 0);

  301.             WARNING("Setting default value for video max rate = %d. "

  302.                     "Use NoDefaults to disable it.\n",

  303.                     av->rc_max_rate);

  304.         }

  305. 

  306.         if (av->rc_max_rate && !av_dict_get(recommended, "bufsize", NULL, 0)) {

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

  308.             av_dict_set_int(&recommended, "bufsize", av->rc_buffer_size, 0);

  309.             WARNING("Setting default value for video buffer size = %d. "

  310.                     "Use NoDefaults to disable it.\n",

  311.                     av->rc_buffer_size);

  312.         }

  313.         break;

  314.     default:

  315.         abort();

  316.     }

  317. 

  318. done:

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

  320.     if (!st)

  321.         return;

  322.     av_dict_get_string(recommended, &enc_config, '=', ',');

  323.     av_dict_free(&recommended);

  324.     av_stream_set_recommended_encoder_configuration(st, enc_config);

  325.     st->codec = av;

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

  327. }

  328. 

  329. static int ffserver_set_codec(AVCodecContext *ctx, const char *codec_name,

  330.                               FFServerConfig *config)

  331. {

  332.     int ret;

  333.     AVCodec *codec = avcodec_find_encoder_by_name(codec_name);

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

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

  336.                             &config->errors,

  337.                             "Invalid codec name: '%s'\n", codec_name);

  338.         return 0;

  339.     }

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

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

  342.             return ret;

  343.         ctx->codec = codec;

  344.     }

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

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

  347.                             &config->errors,

  348.                             "Inconsistent configuration: trying to set '%s' "

  349.                             "codec option, but '%s' codec is used previously\n",

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

  351.     return 0;

  352. }

  353. 

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

  355. {

  356.     FILE *f=NULL;

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

  358.     int ret = 0;

  359.     AVCodecContext *avctx;

  360.     const AVCodec *codec;

  361. 

  362.     switch(type) {

  363.     case AV_OPT_FLAG_AUDIO_PARAM:

  364.         avctx = config->dummy_actx;

  365.         break;

  366.     case AV_OPT_FLAG_VIDEO_PARAM:

  367.         avctx = config->dummy_vctx;

  368.         break;

  369.     default:

  370.         av_assert0(0);

  371.     }

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

  373. 

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

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

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

  377.         return AVERROR(EINVAL);

  378.     }

  379. 

  380.     while(!feof(f)){

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

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

  383.             continue;

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

  385.         if(e){

  386.             av_log(NULL, AV_LOG_ERROR, "%s: Invalid syntax: '%s'\n", filename,

  387.                    line);

  388.             ret = AVERROR(EINVAL);

  389.             break;

  390.         }

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

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

  393.         {

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

  395.                 break;

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

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

  398.             ret = AVERROR(EINVAL);

  399.             break;

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

  401.             break;

  402.     }

  403. 

  404.     fclose(f);

  405. 

  406.     return ret;

  407. }

  408. 

  409. static AVOutputFormat *ffserver_guess_format(const char *short_name,

  410.                                              const char *filename,

  411.                                              const char *mime_type)

  412. {

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

  414. 

  415.     if (fmt) {

  416.         AVOutputFormat *stream_fmt;

  417.         char stream_format_name[64];

  418. 

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

  420.                 fmt->name);

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

  422. 

  423.         if (stream_fmt)

  424.             fmt = stream_fmt;

  425.     }

  426. 

  427.     return fmt;

  428. }

  429. 

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

  431.                                  int log_level, int *errors, const char *fmt,

  432.                                  va_list vl)

  433. {

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

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

  436.     if (errors)

  437.         (*errors)++;

  438. }

  439. 

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

  441.                                 int log_level, int *errors,

  442.                                 const char *fmt, ...)

  443. {

  444.     va_list vl;

  445.     va_start(vl, fmt);

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

  447.     va_end(vl);

  448. }

  449. 

  450. static int ffserver_set_int_param(int *dest, const char *value, int factor,

  451.                                   int min, int max, FFServerConfig *config,

  452.                                   const char *error_msg, ...)

  453. {

  454.     int tmp;

  455.     char *tailp;

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

  457.         goto error;

  458.     errno = 0;

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

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

  461.         goto error;

  462.     if (factor) {

  463.         if (tmp == INT_MIN || FFABS(tmp) > INT_MAX / FFABS(factor))

  464.             goto error;

  465.         tmp *= factor;

  466.     }

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

  468.         goto error;

  469.     if (dest)

  470.         *dest = tmp;

  471.     return 0;

  472.   error:

  473.     if (config) {

  474.         va_list vl;

  475.         va_start(vl, error_msg);

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

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

  478.         va_end(vl);

  479.     }

  480.     return AVERROR(EINVAL);

  481. }

  482. 

  483. static int ffserver_set_float_param(float *dest, const char *value,

  484.                                     float factor, float min, float max,

  485.                                     FFServerConfig *config,

  486.                                     const char *error_msg, ...)

  487. {

  488.     double tmp;

  489.     char *tailp;

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

  491.         goto error;

  492.     errno = 0;

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

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

  495.         goto error;

  496.     if (factor)

  497.         tmp *= factor;

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

  499.         goto error;

  500.     if (dest)

  501.         *dest = tmp;

  502.     return 0;

  503.   error:

  504.     if (config) {

  505.         va_list vl;

  506.         va_start(vl, error_msg);

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

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

  509.         va_end(vl);

  510.     }

  511.     return AVERROR(EINVAL);

  512. }

  513. 

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

  515.                                   FFServerConfig *config)

  516. {

  517.     static int hinted = 0;

  518.     int ret = 0;

  519.     AVDictionaryEntry *e;

  520.     const AVOption *o = NULL;

  521.     const char *option = NULL;

  522.     const char *codec_name = NULL;

  523.     char buff[1024];

  524.     AVCodecContext *ctx;

  525.     AVDictionary **dict;

  526.     enum AVCodecID guessed_codec_id;

  527. 

  528.     switch (type) {

  529.     case AV_OPT_FLAG_VIDEO_PARAM:

  530.         ctx = config->dummy_vctx;

  531.         dict = &config->video_opts;

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

  533.                            config->guessed_video_codec_id : AV_CODEC_ID_H264;

  534.         break;

  535.     case AV_OPT_FLAG_AUDIO_PARAM:

  536.         ctx = config->dummy_actx;

  537.         dict = &config->audio_opts;

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

  539.                            config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  540.         break;

  541.     default:

  542.         av_assert0(0);

  543.     }

  544. 

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

  546.         //explicit private option

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

  548.         codec_name = buff;

  549.         if(!(option = strchr(buff, ':'))){

  550.             report_config_error(config->filename, config->line_num,

  551.                                 AV_LOG_ERROR, &config->errors,

  552.                                 "Syntax error. Unmatched ':'\n");

  553.             return -1;

  554. 

  555.         }

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

  557.         option++;

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

  559.             return ret;

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

  561.             return -1;

  562.     } else {

  563.         option = opt;

  564.     }

  565. 

  566.     o = av_opt_find(ctx, option, NULL, type | AV_OPT_FLAG_ENCODING_PARAM,

  567.                     AV_OPT_SEARCH_CHILDREN);

  568.     if (!o &&

  569.         (!strcmp(option, "time_base")  || !strcmp(option, "pixel_format") ||

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

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

  572.     if (!o) {

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

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

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

  576.             hinted = 1;

  577.             report_config_error(config->filename, config->line_num,

  578.                                 AV_LOG_ERROR, NULL, "If '%s' is a codec private"

  579.                                 "option, then prefix it with codec name, for "

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

  581.                                 opt, avcodec_get_name(guessed_codec_id) ,opt,

  582.                                 arg);

  583.         }

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

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

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

  587.                 arg, av_err2str(ret));

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

  589.         if ((o->type == AV_OPT_TYPE_FLAGS) && arg &&

  590.             (arg[0] == '+' || arg[0] == '-'))

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

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

  593.                             &config->errors, "Redeclaring value of option '%s'."

  594.                             "Previous value was: '%s'.\n", opt, e->value);

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

  596.         return AVERROR(ENOMEM);

  597.     }

  598.     return 0;

  599. }

  600. 

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

  602.                                       int type, FFServerConfig *config)

  603. {

  604.     char buf[22];

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

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

  607. }

  608. 

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

  610.                                         const char **p)

  611. {

  612.     int val;

  613.     char arg[1024];

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

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

  616.             WARNING("Port option is deprecated. Use HTTPPort instead.\n");

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

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

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

  620.         if (val < 1024)

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

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

  623.     } else if (!av_strcasecmp(cmd, "HTTPBindAddress") ||

  624.                !av_strcasecmp(cmd, "BindAddress")) {

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

  626.             WARNING("BindAddress option is deprecated. Use HTTPBindAddress "

  627.                     "instead.\n");

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

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

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

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

  632.         WARNING("NoDaemon option has no effect. You should remove it.\n");

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

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

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

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

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

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

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

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

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

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

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

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

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

  646.         config->nb_max_http_connections = val;

  647.         if (config->nb_max_connections > config->nb_max_http_connections) {

  648.             ERROR("Inconsistent configuration: MaxClients(%d) > "

  649.                   "MaxHTTPConnections(%d)\n", config->nb_max_connections,

  650.                   config->nb_max_http_connections);

  651.         }

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

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

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

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

  656.         config->nb_max_connections = val;

  657.         if (config->nb_max_connections > config->nb_max_http_connections) {

  658.             ERROR("Inconsistent configuration: MaxClients(%d) > "

  659.                   "MaxHTTPConnections(%d)\n", config->nb_max_connections,

  660.                   config->nb_max_http_connections);

  661.         }

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

  663.         int64_t llval;

  664.         char *tailp;

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

  666.         errno = 0;

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

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

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

  670.         else

  671.             config->max_bandwidth = llval;

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

  673.         if (!config->debug) {

  674.             ffserver_get_arg(config->logfilename, sizeof(config->logfilename),

  675.                              p);

  676.         }

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

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

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

  680.         config->use_defaults = 0;

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

  682.         config->use_defaults = 1;

  683.     } else

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

  685.     return 0;

  686. }

  687. 

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

  689.                                       const char **p, FFServerStream **pfeed)

  690. {

  691.     FFServerStream *feed;

  692.     char arg[1024];

  693.     av_assert0(pfeed);

  694.     feed = *pfeed;

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

  696.         char *q;

  697.         FFServerStream *s;

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

  699.         if (!feed)

  700.             return AVERROR(ENOMEM);

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

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

  703.         if (*q)

  704.             *q = '\0';

  705. 

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

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

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

  709.         }

  710. 

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

  712.         /* default feed file */

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

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

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

  716.         feed->is_feed = 1;

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

  718.         *pfeed = feed;

  719.         return 0;

  720.     }

  721.     av_assert0(feed);

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

  723.         int i;

  724. 

  725.         feed->child_argv = av_mallocz_array(MAX_CHILD_ARGS, sizeof(char *));

  726.         if (!feed->child_argv)

  727.             return AVERROR(ENOMEM);

  728.         for (i = 0; i < MAX_CHILD_ARGS - 2; i++) {

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

  730.             if (!arg[0])

  731.                 break;

  732. 

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

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

  735.                 return AVERROR(ENOMEM);

  736.         }

  737. 

  738.         feed->child_argv[i] =

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

  740.                         (config->http_addr.sin_addr.s_addr == INADDR_ANY) ?

  741.                         "127.0.0.1" : inet_ntoa(config->http_addr.sin_addr),

  742.                         ntohs(config->http_addr.sin_port), feed->filename);

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

  744.             return AVERROR(ENOMEM);

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

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

  747.                 config->line_num);

  748.     } else if (!av_strcasecmp(cmd, "File") ||

  749.                !av_strcasecmp(cmd, "ReadOnlyFile")) {

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

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

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

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

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

  755.         if (!arg[0]) {

  756.             feed->truncate = 1;

  757.         } else {

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

  759.                     "Use Truncate alone with no arguments.\n");

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

  761.         }

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

  763.         char *p1;

  764.         double fsize;

  765. 

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

  767.         p1 = arg;

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

  769.         switch(av_toupper(*p1)) {

  770.         case 'K':

  771.             fsize *= 1024;

  772.             break;

  773.         case 'M':

  774.             fsize *= 1024 * 1024;

  775.             break;

  776.         case 'G':

  777.             fsize *= 1024 * 1024 * 1024;

  778.             break;

  779.         default:

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

  781.             break;

  782.         }

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

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

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

  786.                   FFM_PACKET_SIZE*4);

  787.         }

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

  789.         *pfeed = NULL;

  790.     } else {

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

  792.     }

  793.     return 0;

  794. }

  795. 

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

  797.                                         const char **p,

  798.                                         FFServerStream **pstream)

  799. {

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

  801.     FFServerStream *stream;

  802.     int val;

  803. 

  804.     av_assert0(pstream);

  805.     stream = *pstream;

  806. 

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

  808.         char *q;

  809.         FFServerStream *s;

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

  811.         if (!stream)

  812.             return AVERROR(ENOMEM);

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

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

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

  816.             av_free(stream);

  817.             avcodec_free_context(&config->dummy_vctx);

  818.             avcodec_free_context(&config->dummy_actx);

  819.             return AVERROR(ENOMEM);

  820.         }

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

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

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

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

  825.         if (q)

  826.             *q = '\0';

  827. 

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

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

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

  831.         }

  832. 

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

  834.         if (stream->fmt) {

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

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

  837.         } else {

  838.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  839.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  840.         }

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

  842.         *pstream = stream;

  843.         return 0;

  844.     }

  845.     av_assert0(stream);

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

  847.         FFServerStream *sfeed;

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

  849.         sfeed = config->first_feed;

  850.         while (sfeed) {

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

  852.                 break;

  853.             sfeed = sfeed->next_feed;

  854.         }

  855.         if (!sfeed)

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

  857.                     stream->filename);

  858.         else

  859.             stream->feed = sfeed;

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

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

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

  863.             stream->stream_type = STREAM_TYPE_STATUS;

  864.             stream->fmt = NULL;

  865.         } else {

  866.             stream->stream_type = STREAM_TYPE_LIVE;

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

  868.             if (!strcmp(arg, "jpeg")) {

  869.                 strcpy(arg, "singlejpeg");

  870.                 stream->single_frame=1;

  871.             }

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

  873.             if (!stream->fmt)

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

  875.         }

  876.         if (stream->fmt) {

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

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

  879.         }

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

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

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

  883.         if (!stream->ifmt)

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

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

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

  887.             ffserver_get_arg(stream->feed_filename,

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

  889.         else

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

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

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

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

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

  895.         char key[32];

  896.         int i;

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

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

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

  900.         key[i] = 0;

  901.         WARNING("Deprecated '%s' option in configuration file. Use "

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

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

  904.             goto nomem;

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

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

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

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

  909.             goto nomem;

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

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

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

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

  914.         stream->send_on_key = 1;

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

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

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

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

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

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

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

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

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

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

  925.         float f;

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

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

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

  929.         if (ffserver_save_avoption_int("b", (int64_t)lrintf(f),

  930.                                        AV_OPT_FLAG_AUDIO_PARAM, config) < 0)

  931.             goto nomem;

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

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

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

  935.             goto nomem;

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

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

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

  939.             goto nomem;

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

  941.         int minrate, maxrate;

  942.         char *dash;

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

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

  945.         if (dash) {

  946.             *dash = '\0';

  947.             dash++;

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

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

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

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

  952.                 goto nomem;

  953.             }

  954.         } else

  955.             ERROR("Incorrect format for VideoBitRateRange. It should be "

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

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

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

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

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

  961.             goto nomem;

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

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

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

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

  966.             goto nomem;

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

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

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

  970.                 "Invalid %s: '%s'", cmd, arg);

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

  972.             goto nomem;

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

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

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

  976.                                "Invalid %s: '%s'", cmd, arg);

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

  978.             goto nomem;

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

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

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

  982.                                "Invalid %s: '%s'", cmd, arg);

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

  984.            goto nomem;

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

  986.         int ret, w, h;

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

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

  989.         if (ret < 0)

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

  991.         else {

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

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

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

  995.                 goto nomem;

  996.         }

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

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

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

  1000.         if (ffserver_save_avoption("time_base", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1001.             goto nomem;

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

  1003.         enum AVPixelFormat pix_fmt;

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

  1005.         pix_fmt = av_get_pix_fmt(arg);

  1006.         if (pix_fmt == AV_PIX_FMT_NONE)

  1007.             ERROR("Unknown pixel format: '%s'\n", arg);

  1008.         else if (ffserver_save_avoption("pixel_format", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1009.             goto nomem;

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

  1011.         ffserver_get_arg(arg, sizeof(arg), p);

  1012.         if (ffserver_save_avoption("g", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1013.             goto nomem;

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

  1015.         if (ffserver_save_avoption("g", "1", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1016.             goto nomem;

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

  1018.         if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1019.             goto nomem;

  1020.     } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {

  1021.         if (ffserver_save_avoption("mbd", "+bits",  AV_OPT_FLAG_VIDEO_PARAM, config) < 0 || //FIXME remove

  1022.             ffserver_save_avoption("flags", "+mv4", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1023.             goto nomem;

  1024.     } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||

  1025.                !av_strcasecmp(cmd, "AVOptionAudio")) {

  1026.         int ret;

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

  1028.         ffserver_get_arg(arg2, sizeof(arg2), p);

  1029.         if (!av_strcasecmp(cmd, "AVOptionVideo"))

  1030.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM,

  1031.                                          config);

  1032.         else

  1033.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM,

  1034.                                          config);

  1035.         if (ret < 0)

  1036.             goto nomem;

  1037.     } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||

  1038.                !av_strcasecmp(cmd, "AVPresetAudio")) {

  1039.         ffserver_get_arg(arg, sizeof(arg), p);

  1040.         if (!av_strcasecmp(cmd, "AVPresetVideo"))

  1041.             ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);

  1042.         else

  1043.             ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);

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

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

  1046.         if (strlen(arg) == 4 &&

  1047.             ffserver_save_avoption_int("codec_tag",

  1048.                                        MKTAG(arg[0], arg[1], arg[2], arg[3]),

  1049.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1050.             goto nomem;

  1051.     } else if (!av_strcasecmp(cmd, "BitExact")) {

  1052.         if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1053.             goto nomem;

  1054.     } else if (!av_strcasecmp(cmd, "DctFastint")) {

  1055.         if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1056.             goto nomem;

  1057.     } else if (!av_strcasecmp(cmd, "IdctSimple")) {

  1058.         if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1059.             goto nomem;

  1060.     } else if (!av_strcasecmp(cmd, "Qscale")) {

  1061.         ffserver_get_arg(arg, sizeof(arg), p);

  1062.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1063.                                "Invalid Qscale: '%s'\n", arg);

  1064.         if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||

  1065.             ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,

  1066.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1067.             goto nomem;

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

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

  1070.         if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1071.             goto nomem;

  1072.     } else if (!av_strcasecmp(cmd, "VideoQMax")) {

  1073.         ffserver_get_arg(arg, sizeof(arg), p);

  1074.         if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1075.             goto nomem;

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

  1077.         ffserver_get_arg(arg, sizeof(arg), p);

  1078.         if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1079.             goto nomem;

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

  1081.         ffserver_get_arg(arg, sizeof(arg), p);

  1082.         if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1083.             goto nomem;

  1084.     } else if (!av_strcasecmp(cmd, "DarkMask")) {

  1085.         ffserver_get_arg(arg, sizeof(arg), p);

  1086.         if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1087.             goto nomem;

  1088.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1089.         config->no_video = 1;

  1090.     } else if (!av_strcasecmp(cmd, "NoAudio")) {

  1091.         config->no_audio = 1;

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

  1093.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1094.                 config->line_num);

  1095.     } else if (!av_strcasecmp(cmd, "DynamicACL")) {

  1096.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

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

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

  1099.         av_freep(&stream->rtsp_option);

  1100.         stream->rtsp_option = av_strdup(arg);

  1101.     } else if (!av_strcasecmp(cmd, "MulticastAddress")) {

  1102.         ffserver_get_arg(arg, sizeof(arg), p);

  1103.         if (resolve_host(&stream->multicast_ip, arg))

  1104.             ERROR("Invalid host/IP address: '%s'\n", arg);

  1105.         stream->is_multicast = 1;

  1106.         stream->loop = 1; /* default is looping */

  1107.     } else if (!av_strcasecmp(cmd, "MulticastPort")) {

  1108.         ffserver_get_arg(arg, sizeof(arg), p);

  1109.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

  1110.                 "Invalid MulticastPort: '%s'\n", arg);

  1111.         stream->multicast_port = val;

  1112.     } else if (!av_strcasecmp(cmd, "MulticastTTL")) {

  1113.         ffserver_get_arg(arg, sizeof(arg), p);

  1114.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1115.                 "Invalid MulticastTTL: '%s'\n", arg);

  1116.         stream->multicast_ttl = val;

  1117.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1118.         stream->loop = 0;

  1119.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1120.         config->stream_use_defaults &= 1;

  1121.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

  1122.             if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)

  1123.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1124.             if (!config->no_audio &&

  1125.                 config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1126.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1127.                 add_codec(stream, audio_enc, config);

  1128.             }

  1129.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1130.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1131.             if (!config->no_video &&

  1132.                 config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1133.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1134.                 add_codec(stream, video_enc, config);

  1135.             }

  1136.         }

  1137.         av_dict_free(&config->video_opts);

  1138.         av_dict_free(&config->audio_opts);

  1139.         avcodec_free_context(&config->dummy_vctx);

  1140.         avcodec_free_context(&config->dummy_actx);

  1141.         config->no_video = 0;

  1142.         config->no_audio = 0;

  1143.         *pstream = NULL;

  1144.     } else if (!av_strcasecmp(cmd, "File") ||

  1145.                !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1146.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1147.                 p);

  1148.     } else if (!av_strcasecmp(cmd, "UseDefaults")) {

  1149.         if (config->stream_use_defaults > 1)

  1150.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1151.         config->stream_use_defaults = 3;

  1152.     } else if (!av_strcasecmp(cmd, "NoDefaults")) {

  1153.         if (config->stream_use_defaults > 1)

  1154.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1155.         config->stream_use_defaults = 2;

  1156.     } else {

  1157.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1158.     }

  1159.     return 0;

  1160.   nomem:

  1161.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1162.     av_dict_free(&config->video_opts);

  1163.     av_dict_free(&config->audio_opts);

  1164.     avcodec_free_context(&config->dummy_vctx);

  1165.     avcodec_free_context(&config->dummy_actx);

  1166.     return AVERROR(ENOMEM);

  1167. }

  1168. 

  1169. static int ffserver_parse_config_redirect(FFServerConfig *config,

  1170.                                           const char *cmd, const char **p,

  1171.                                           FFServerStream **predirect)

  1172. {

  1173.     FFServerStream *redirect;

  1174.     av_assert0(predirect);

  1175.     redirect = *predirect;

  1176. 

  1177.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1178.         char *q;

  1179.         redirect = av_mallocz(sizeof(FFServerStream));

  1180.         if (!redirect)

  1181.             return AVERROR(ENOMEM);

  1182. 

  1183.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1184.         q = strrchr(redirect->filename, '>');

  1185.         if (*q)

  1186.             *q = '\0';

  1187.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1188.         *predirect = redirect;

  1189.         return 0;

  1190.     }

  1191.     av_assert0(redirect);

  1192.     if (!av_strcasecmp(cmd, "URL")) {

  1193.         ffserver_get_arg(redirect->feed_filename,

  1194.                 sizeof(redirect->feed_filename), p);

  1195.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1196.         if (!redirect->feed_filename[0])

  1197.             ERROR("No URL found for <Redirect>\n");

  1198.         *predirect = NULL;

  1199.     } else {

  1200.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1201.     }

  1202.     return 0;

  1203. }

  1204. 

  1205. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1206. {

  1207.     FILE *f;

  1208.     char line[1024];

  1209.     char cmd[64];

  1210.     const char *p;

  1211.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1212.     FFServerStream **last_feed, *feed = NULL;

  1213.     int ret = 0;

  1214. 

  1215.     av_assert0(config);

  1216. 

  1217.     f = fopen(filename, "r");

  1218.     if (!f) {

  1219.         ret = AVERROR(errno);

  1220.         av_log(NULL, AV_LOG_ERROR,

  1221.                 "Could not open the configuration file '%s'\n", filename);

  1222.         return ret;

  1223.     }

  1224. 

  1225.     config->first_stream = NULL;

  1226.     config->first_feed = NULL;

  1227.     config->errors = config->warnings = 0;

  1228. 

  1229.     last_stream = &config->first_stream;

  1230.     last_feed = &config->first_feed;

  1231. 

  1232.     config->line_num = 0;

  1233.     while (fgets(line, sizeof(line), f) != NULL) {

  1234.         config->line_num++;

  1235.         p = line;

  1236.         while (av_isspace(*p))

  1237.             p++;

  1238.         if (*p == '\0' || *p == '#')

  1239.             continue;

  1240. 

  1241.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1242. 

  1243.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1244.             int opening = !av_strcasecmp(cmd, "<Feed");

  1245.             if (opening && (stream || feed || redirect)) {

  1246.                 ERROR("Already in a tag\n");

  1247.             } else {

  1248.                 ret = ffserver_parse_config_feed(config, cmd, &p, &feed);

  1249.                 if (ret < 0)

  1250.                     break;

  1251.                 if (opening) {

  1252.                     /* add in stream & feed list */

  1253.                     *last_stream = feed;

  1254.                     *last_feed = feed;

  1255.                     last_stream = &feed->next;

  1256.                     last_feed = &feed->next_feed;

  1257.                 }

  1258.             }

  1259.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1260.             int opening = !av_strcasecmp(cmd, "<Stream");

  1261.             if (opening && (stream || feed || redirect)) {

  1262.                 ERROR("Already in a tag\n");

  1263.             } else {

  1264.                 ret = ffserver_parse_config_stream(config, cmd, &p, &stream);

  1265.                 if (ret < 0)

  1266.                     break;

  1267.                 if (opening) {

  1268.                     /* add in stream list */

  1269.                     *last_stream = stream;

  1270.                     last_stream = &stream->next;

  1271.                 }

  1272.             }

  1273.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1274.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1275.             if (opening && (stream || feed || redirect))

  1276.                 ERROR("Already in a tag\n");

  1277.             else {

  1278.                 ret = ffserver_parse_config_redirect(config, cmd, &p,

  1279.                                                      &redirect);

  1280.                 if (ret < 0)

  1281.                     break;

  1282.                 if (opening) {

  1283.                     /* add in stream list */

  1284.                     *last_stream = redirect;

  1285.                     last_stream = &redirect->next;

  1286.                 }

  1287.             }

  1288.         } else {

  1289.             ffserver_parse_config_global(config, cmd, &p);

  1290.         }

  1291.     }

  1292.     if (stream || feed || redirect)

  1293.         ERROR("Missing closing </%s> tag\n",

  1294.               stream ? "Stream" : (feed ? "Feed" : "Redirect"));

  1295. 

  1296.     fclose(f);

  1297.     if (ret < 0)

  1298.         return ret;

  1299.     if (config->errors)

  1300.         return AVERROR(EINVAL);

  1301.     else

  1302.         return 0;

  1303. }

  1304. 

  1305. #undef ERROR

  1306. #undef WARNING

  1307. 

  1308. void ffserver_free_child_args(void *argsp)

  1309. {

  1310.     int i;

  1311.     char **args;

  1312.     if (!argsp)

  1313.         return;

  1314.     args = *(char ***)argsp;

  1315.     if (!args)

  1316.         return;

  1317.     for (i = 0; i < MAX_CHILD_ARGS; i++)

  1318.         av_free(args[i]);

  1319.     av_freep(argsp);

  1320. }