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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.     int errors = 0;

  120. 

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

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

  123.         acl.action = IP_ALLOW;

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

  125.         acl.action = IP_DENY;

  126.     else {

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

  128.                 filename, line_num, arg);

  129.         errors++;

  130.     }

  131. 

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

  133. 

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

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

  136.                 filename, line_num, arg);

  137.         errors++;

  138.     } else

  139.         acl.last = acl.first;

  140. 

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

  142. 

  143.     if (arg[0]) {

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

  145.             fprintf(stderr,

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

  147.                     filename, line_num, arg);

  148.             errors++;

  149.         }

  150.     }

  151. 

  152.     if (!errors) {

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

  154.         FFServerIPAddressACL **naclp = 0;

  155. 

  156.         acl.next = 0;

  157.         *nacl = acl;

  158. 

  159.         if (stream)

  160.             naclp = &stream->acl;

  161.         else if (feed)

  162.             naclp = &feed->acl;

  163.         else if (ext_acl)

  164.             naclp = &ext_acl;

  165.         else {

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

  167.                     filename, line_num);

  168.             errors++;

  169.         }

  170. 

  171.         if (naclp) {

  172.             while (*naclp)

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

  174. 

  175.             *naclp = nacl;

  176.         } else

  177.             av_free(nacl);

  178.     }

  179. }

  180. 

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

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

  183.                       FFServerConfig *config)

  184. {

  185.     AVStream *st;

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

  187.     char *enc_config;

  188. 

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

  190.         return;

  191. 

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

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

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

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

  196.     av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);

  197.     if (av_dict_count(*opts))

  198.         av_log(NULL, AV_LOG_WARNING,

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

  200. 

  201.     if (config->stream_use_defaults) {

  202.     //TODO: reident

  203.     /* compute default parameters */

  204.     switch(av->codec_type) {

  205.     case AVMEDIA_TYPE_AUDIO:

  206.         if (!av_dict_get(recommended, "ab", NULL, 0)) {

  207.             av->bit_rate = 64000;

  208.             av_dict_set_int(&recommended, "ab", av->bit_rate, 0);

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

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

  211.                     av->bit_rate);

  212.         }

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

  214.             av->sample_rate = 22050;

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

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

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

  218.                     av->sample_rate);

  219.         }

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

  221.             av->channels = 1;

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

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

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

  225.                     av->channels);

  226.         }

  227.         break;

  228.     case AVMEDIA_TYPE_VIDEO:

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

  230.             av->bit_rate = 64000;

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

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

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

  234.                     av->bit_rate);

  235.         }

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

  237.             av->time_base.den = 5;

  238.             av->time_base.num = 1;

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

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

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

  242.                     av->time_base.den);

  243.         }

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

  245.             av->width = 160;

  246.             av->height = 128;

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

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

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

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

  251.         }

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

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

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

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

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

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

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

  259.                     av->bit_rate_tolerance);

  260.         }

  261. 

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

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

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

  265.             WARNING("Setting default value for video rate control equation = %s. "

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

  267.                     av->rc_eq);

  268.         }

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

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

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

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

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

  274.                     av->rc_max_rate);

  275.         }

  276. 

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

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

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

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

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

  282.                     av->rc_buffer_size);

  283.         }

  284.         break;

  285.     default:

  286.         abort();

  287.     }

  288.     } else {

  289.         switch(av->codec_type) {

  290.         case AVMEDIA_TYPE_AUDIO:

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

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

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

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

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

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

  297.             break;

  298.         case AVMEDIA_TYPE_VIDEO:

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

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

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

  302.             break;

  303.         default:

  304.             av_assert0(0);

  305.         }

  306.     }

  307. 

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

  309.     if (!st)

  310.         return;

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

  312.     av_dict_free(&recommended);

  313.     av_stream_set_recommended_encoder_configuration(st, enc_config);

  314.     st->codec = av;

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

  316. }

  317. 

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

  319. {

  320.     int ret;

  321.     AVCodec *codec = avcodec_find_encoder_by_name(codec_name);

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

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

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

  325.         return 0;

  326.     }

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

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

  329.             return ret;

  330.         ctx->codec = codec;

  331.     }

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

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

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

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

  336.     return 0;

  337. }

  338. 

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

  340. {

  341.     FILE *f=NULL;

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

  343.     int ret = 0;

  344.     AVCodecContext *avctx;

  345.     const AVCodec *codec;

  346. 

  347.     switch(type) {

  348.     case AV_OPT_FLAG_AUDIO_PARAM:

  349.         avctx = config->dummy_actx;

  350.         break;

  351.     case AV_OPT_FLAG_VIDEO_PARAM:

  352.         avctx = config->dummy_vctx;

  353.         break;

  354.     default:

  355.         av_assert0(0);

  356.     }

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

  358. 

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

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

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

  362.         return AVERROR(EINVAL);

  363.     }

  364. 

  365.     while(!feof(f)){

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

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

  368.             continue;

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

  370.         if(e){

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

  372.             ret = AVERROR(EINVAL);

  373.             break;

  374.         }

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

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

  377.         {

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

  379.                 break;

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

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

  382.             ret = AVERROR(EINVAL);

  383.             break;

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

  385.             break;

  386.     }

  387. 

  388.     fclose(f);

  389. 

  390.     return ret;

  391. }

  392. 

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

  394. {

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

  396. 

  397.     if (fmt) {

  398.         AVOutputFormat *stream_fmt;

  399.         char stream_format_name[64];

  400. 

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

  402.                 fmt->name);

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

  404. 

  405.         if (stream_fmt)

  406.             fmt = stream_fmt;

  407.     }

  408. 

  409.     return fmt;

  410. }

  411. 

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

  413. {

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

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

  416.     if (errors)

  417.         (*errors)++;

  418. }

  419. 

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

  421. {

  422.     va_list vl;

  423.     va_start(vl, fmt);

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

  425.     va_end(vl);

  426. }

  427. 

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

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

  430. {

  431.     int tmp;

  432.     char *tailp;

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

  434.         goto error;

  435.     errno = 0;

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

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

  438.         goto error;

  439.     if (factor) {

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

  441.             goto error;

  442.         tmp *= factor;

  443.     }

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

  445.         goto error;

  446.     if (dest)

  447.         *dest = tmp;

  448.     return 0;

  449.   error:

  450.     if (config) {

  451.         va_list vl;

  452.         va_start(vl, error_msg);

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

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

  455.         va_end(vl);

  456.     }

  457.     return AVERROR(EINVAL);

  458. }

  459. 

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

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

  462. {

  463.     double tmp;

  464.     char *tailp;

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

  466.         goto error;

  467.     errno = 0;

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

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

  470.         goto error;

  471.     if (factor)

  472.         tmp *= factor;

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

  474.         goto error;

  475.     if (dest)

  476.         *dest = tmp;

  477.     return 0;

  478.   error:

  479.     if (config) {

  480.         va_list vl;

  481.         va_start(vl, error_msg);

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

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

  484.         va_end(vl);

  485.     }

  486.     return AVERROR(EINVAL);

  487. }

  488. 

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

  490. {

  491.     static int hinted = 0;

  492.     int ret = 0;

  493.     AVDictionaryEntry *e;

  494.     const AVOption *o = NULL;

  495.     const char *option = NULL;

  496.     const char *codec_name = NULL;

  497.     char buff[1024];

  498.     AVCodecContext *ctx;

  499.     AVDictionary **dict;

  500.     enum AVCodecID guessed_codec_id;

  501. 

  502.     switch (type) {

  503.     case AV_OPT_FLAG_VIDEO_PARAM:

  504.         ctx = config->dummy_vctx;

  505.         dict = &config->video_opts;

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

  507.                            config->guessed_video_codec_id : AV_CODEC_ID_H264;

  508.         break;

  509.     case AV_OPT_FLAG_AUDIO_PARAM:

  510.         ctx = config->dummy_actx;

  511.         dict = &config->audio_opts;

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

  513.                            config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  514.         break;

  515.     default:

  516.         av_assert0(0);

  517.     }

  518. 

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

  520.         //explicit private option

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

  522.         codec_name = buff;

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

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

  525.                                 AV_LOG_ERROR, &config->errors,

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

  527.             return -1;

  528. 

  529.         }

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

  531.         option++;

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

  533.             return ret;

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

  535.             return -1;

  536.     } else {

  537.         option = opt;

  538.     }

  539. 

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

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

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

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

  544.     if (!o) {

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

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

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

  548.             hinted = 1;

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

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

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

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

  553.         }

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

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

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

  557.                 arg, av_err2str(ret));

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

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

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

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

  562.                 &config->errors,

  563.                 "Redeclaring value of option '%s'. Previous value was: '%s'.\n",

  564.                 opt, e->value);

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

  566.         return AVERROR(ENOMEM);

  567.     }

  568.     return 0;

  569. }

  570. 

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

  572.                                       int type, FFServerConfig *config)

  573. {

  574.     char buf[22];

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

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

  577. }

  578. 

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

  580.                                         const char **p)

  581. {

  582.     int val;

  583.     char arg[1024];

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

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

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

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

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

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

  590.         if (val < 1024)

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

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

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

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

  595.             WARNING("BindAddress option is deprecated. Use HTTPBindAddress instead.\n");

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  614.         config->nb_max_http_connections = val;

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

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

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

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

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

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

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

  622.         config->nb_max_connections = val;

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

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

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

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

  627.         int64_t llval;

  628.         char *tailp;

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

  630.         errno = 0;

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

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

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

  634.         else

  635.             config->max_bandwidth = llval;

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

  637.         if (!config->debug)

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

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

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

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

  642.         config->use_defaults = 0;

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

  644.         config->use_defaults = 1;

  645.     } else

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

  647.     return 0;

  648. }

  649. 

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

  651.                                       FFServerStream **pfeed)

  652. {

  653.     FFServerStream *feed;

  654.     char arg[1024];

  655.     av_assert0(pfeed);

  656.     feed = *pfeed;

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

  658.         char *q;

  659.         FFServerStream *s;

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

  661.         if (!feed)

  662.             return AVERROR(ENOMEM);

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

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

  665.         if (*q)

  666.             *q = '\0';

  667. 

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

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

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

  671.         }

  672. 

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

  674.         /* default feed file */

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

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

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

  678.         feed->is_feed = 1;

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

  680.         *pfeed = feed;

  681.         return 0;

  682.     }

  683.     av_assert0(feed);

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

  685.         int i;

  686. 

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

  688.         if (!feed->child_argv)

  689.             return AVERROR(ENOMEM);

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

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

  692.             if (!arg[0])

  693.                 break;

  694. 

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

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

  697.                 return AVERROR(ENOMEM);

  698.         }

  699. 

  700.         feed->child_argv[i] =

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

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

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

  704.                         feed->filename);

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

  706.             return AVERROR(ENOMEM);

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

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

  709.                 config->line_num);

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

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

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

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

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

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

  716.         if (!arg[0]) {

  717.             feed->truncate = 1;

  718.         } else {

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

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

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

  722.         }

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

  724.         char *p1;

  725.         double fsize;

  726. 

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

  728.         p1 = arg;

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

  730.         switch(av_toupper(*p1)) {

  731.         case 'K':

  732.             fsize *= 1024;

  733.             break;

  734.         case 'M':

  735.             fsize *= 1024 * 1024;

  736.             break;

  737.         case 'G':

  738.             fsize *= 1024 * 1024 * 1024;

  739.             break;

  740.         default:

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

  742.             break;

  743.         }

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

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

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

  747.                     FFM_PACKET_SIZE*4);

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

  749.         *pfeed = NULL;

  750.     } else {

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

  752.     }

  753.     return 0;

  754. }

  755. 

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

  757.                                         FFServerStream **pstream)

  758. {

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

  760.     FFServerStream *stream;

  761.     int val;

  762. 

  763.     av_assert0(pstream);

  764.     stream = *pstream;

  765. 

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

  767.         char *q;

  768.         FFServerStream *s;

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

  770.         if (!stream)

  771.             return AVERROR(ENOMEM);

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

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

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

  775.             av_free(stream);

  776.             avcodec_free_context(&config->dummy_vctx);

  777.             avcodec_free_context(&config->dummy_actx);

  778.             return AVERROR(ENOMEM);

  779.         }

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

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

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

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

  784.         if (q)

  785.             *q = '\0';

  786. 

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

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

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

  790.         }

  791. 

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

  793.         if (stream->fmt) {

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

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

  796.         } else {

  797.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  798.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  799.         }

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

  801.         *pstream = stream;

  802.         return 0;

  803.     }

  804.     av_assert0(stream);

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

  806.         FFServerStream *sfeed;

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

  808.         sfeed = config->first_feed;

  809.         while (sfeed) {

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

  811.                 break;

  812.             sfeed = sfeed->next_feed;

  813.         }

  814.         if (!sfeed)

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

  816.                     stream->filename);

  817.         else

  818.             stream->feed = sfeed;

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

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

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

  822.             stream->stream_type = STREAM_TYPE_STATUS;

  823.             stream->fmt = NULL;

  824.         } else {

  825.             stream->stream_type = STREAM_TYPE_LIVE;

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

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

  828.                 strcpy(arg, "mjpeg");

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

  830.             if (!stream->fmt)

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

  832.         }

  833.         if (stream->fmt) {

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

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

  836.         }

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

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

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

  840.         if (!stream->ifmt)

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

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

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

  844.             ffserver_get_arg(stream->feed_filename,

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

  846.         else

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

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

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

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

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

  852.         char key[32];

  853.         int i;

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

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

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

  857.         key[i] = 0;

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

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

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

  861.             goto nomem;

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

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

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

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

  866.             goto nomem;

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

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

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

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

  871.         stream->send_on_key = 1;

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

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

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

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

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

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

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

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

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

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

  882.         float f;

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

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

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

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

  887.             goto nomem;

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

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

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

  891.             goto nomem;

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

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

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

  895.             goto nomem;

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

  897.         int minrate, maxrate;

  898.         char *dash;

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

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

  901.         if (dash) {

  902.             *dash = '\0';

  903.             dash++;

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

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

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

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

  908.                 goto nomem;

  909.             }

  910.         } else

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

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

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

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

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

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

  917.             goto nomem;

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

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

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

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

  922.             goto nomem;

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

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

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

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

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

  928.             goto nomem;

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

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

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

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

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

  934.             goto nomem;

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

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

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

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

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

  940.            goto nomem;

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

  942.         int ret, w, h;

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

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

  945.         if (ret < 0)

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

  947.         else {

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

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

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

  951.                 goto nomem;

  952.         }

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

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

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

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

  957.             goto nomem;

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

  959.         enum AVPixelFormat pix_fmt;

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

  961.         pix_fmt = av_get_pix_fmt(arg);

  962.         if (pix_fmt == AV_PIX_FMT_NONE)

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

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

  965.             goto nomem;

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

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

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

  969.             goto nomem;

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

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

  972.             goto nomem;

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

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

  975.             goto nomem;

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

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

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

  979.             goto nomem;

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

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

  982.         int ret;

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

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

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

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

  987.         else

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

  989.         if (ret < 0)

  990.             goto nomem;

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

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

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

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

  995.             ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);

  996.         else

  997.             ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);

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

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

  1000.         if (strlen(arg) == 4 &&

  1001.             ffserver_save_avoption_int("codec_tag", MKTAG(arg[0], arg[1], arg[2], arg[3]),

  1002.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1003.             goto nomem;

  1004.     } else if (!av_strcasecmp(cmd, "BitExact")) {

  1005.         if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1006.             goto nomem;

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

  1008.         if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1009.             goto nomem;

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

  1011.         if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1012.             goto nomem;

  1013.     } else if (!av_strcasecmp(cmd, "Qscale")) {

  1014.         ffserver_get_arg(arg, sizeof(arg), p);

  1015.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1016.                                "Invalid Qscale: '%s'\n", arg);

  1017.         if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||

  1018.             ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,

  1019.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1020.             goto nomem;

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

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

  1023.         if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1024.             goto nomem;

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

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

  1027.         if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1028.             goto nomem;

  1029.     } else if (!av_strcasecmp(cmd, "VideoQMin")) {

  1030.         ffserver_get_arg(arg, sizeof(arg), p);

  1031.         if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1032.             goto nomem;

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

  1034.         ffserver_get_arg(arg, sizeof(arg), p);

  1035.         if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1036.             goto nomem;

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

  1038.         ffserver_get_arg(arg, sizeof(arg), p);

  1039.         if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1040.             goto nomem;

  1041.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1042.         config->no_video = 1;

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

  1044.         config->no_audio = 1;

  1045.     } else if (!av_strcasecmp(cmd, "ACL")) {

  1046.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1047.                 config->line_num);

  1048.     } else if (!av_strcasecmp(cmd, "DynamicACL")) {

  1049.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

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

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

  1052.         av_freep(&stream->rtsp_option);

  1053.         stream->rtsp_option = av_strdup(arg);

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

  1055.         ffserver_get_arg(arg, sizeof(arg), p);

  1056.         if (resolve_host(&stream->multicast_ip, arg))

  1057.             ERROR("Invalid host/IP address: '%s'\n", arg);

  1058.         stream->is_multicast = 1;

  1059.         stream->loop = 1; /* default is looping */

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

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

  1062.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

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

  1064.         stream->multicast_port = val;

  1065.     } else if (!av_strcasecmp(cmd, "MulticastTTL")) {

  1066.         ffserver_get_arg(arg, sizeof(arg), p);

  1067.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1068.                 "Invalid MulticastTTL: '%s'\n", arg);

  1069.         stream->multicast_ttl = val;

  1070.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1071.         stream->loop = 0;

  1072.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1073.         config->stream_use_defaults &= 1;

  1074.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

  1075.             if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)

  1076.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1077.             if (!config->no_audio && config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1078.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1079.                 add_codec(stream, audio_enc, config);

  1080.             }

  1081.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1082.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1083.             if (!config->no_video && config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1084.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1085.                 add_codec(stream, video_enc, config);

  1086.             }

  1087.         }

  1088.         av_dict_free(&config->video_opts);

  1089.         av_dict_free(&config->audio_opts);

  1090.         avcodec_free_context(&config->dummy_vctx);

  1091.         avcodec_free_context(&config->dummy_actx);

  1092.         *pstream = NULL;

  1093.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1094.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1095.                 p);

  1096.     } else if (!av_strcasecmp(cmd, "UseDefaults")) {

  1097.         if (config->stream_use_defaults > 1)

  1098.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1099.         config->stream_use_defaults = 3;

  1100.     } else if (!av_strcasecmp(cmd, "NoDefaults")) {

  1101.         if (config->stream_use_defaults > 1)

  1102.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1103.         config->stream_use_defaults = 2;

  1104.     } else {

  1105.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1106.     }

  1107.     return 0;

  1108.   nomem:

  1109.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1110.     av_dict_free(&config->video_opts);

  1111.     av_dict_free(&config->audio_opts);

  1112.     avcodec_free_context(&config->dummy_vctx);

  1113.     avcodec_free_context(&config->dummy_actx);

  1114.     return AVERROR(ENOMEM);

  1115. }

  1116. 

  1117. static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,

  1118.                                           FFServerStream **predirect)

  1119. {

  1120.     FFServerStream *redirect;

  1121.     av_assert0(predirect);

  1122.     redirect = *predirect;

  1123. 

  1124.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1125.         char *q;

  1126.         redirect = av_mallocz(sizeof(FFServerStream));

  1127.         if (!redirect)

  1128.             return AVERROR(ENOMEM);

  1129. 

  1130.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1131.         q = strrchr(redirect->filename, '>');

  1132.         if (*q)

  1133.             *q = '\0';

  1134.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1135.         *predirect = redirect;

  1136.         return 0;

  1137.     }

  1138.     av_assert0(redirect);

  1139.     if (!av_strcasecmp(cmd, "URL")) {

  1140.         ffserver_get_arg(redirect->feed_filename,

  1141.                 sizeof(redirect->feed_filename), p);

  1142.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1143.         if (!redirect->feed_filename[0])

  1144.             ERROR("No URL found for <Redirect>\n");

  1145.         *predirect = NULL;

  1146.     } else {

  1147.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1148.     }

  1149.     return 0;

  1150. }

  1151. 

  1152. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1153. {

  1154.     FILE *f;

  1155.     char line[1024];

  1156.     char cmd[64];

  1157.     const char *p;

  1158.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1159.     FFServerStream **last_feed, *feed = NULL;

  1160.     int ret = 0;

  1161. 

  1162.     av_assert0(config);

  1163. 

  1164.     f = fopen(filename, "r");

  1165.     if (!f) {

  1166.         ret = AVERROR(errno);

  1167.         av_log(NULL, AV_LOG_ERROR,

  1168.                 "Could not open the configuration file '%s'\n", filename);

  1169.         return ret;

  1170.     }

  1171. 

  1172.     config->first_stream = NULL;

  1173.     config->first_feed = NULL;

  1174.     config->errors = config->warnings = 0;

  1175. 

  1176.     last_stream = &config->first_stream;

  1177.     last_feed = &config->first_feed;

  1178. 

  1179.     config->line_num = 0;

  1180.     while (fgets(line, sizeof(line), f) != NULL) {

  1181.         config->line_num++;

  1182.         p = line;

  1183.         while (av_isspace(*p))

  1184.             p++;

  1185.         if (*p == '\0' || *p == '#')

  1186.             continue;

  1187. 

  1188.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1189. 

  1190.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1191.             int opening = !av_strcasecmp(cmd, "<Feed");

  1192.             if (opening && (stream || feed || redirect)) {

  1193.                 ERROR("Already in a tag\n");

  1194.             } else {

  1195.                 ret = ffserver_parse_config_feed(config, cmd, &p, &feed);

  1196.                 if (ret < 0)

  1197.                     break;

  1198.                 if (opening) {

  1199.                     /* add in stream & feed list */

  1200.                     *last_stream = feed;

  1201.                     *last_feed = feed;

  1202.                     last_stream = &feed->next;

  1203.                     last_feed = &feed->next_feed;

  1204.                 }

  1205.             }

  1206.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1207.             int opening = !av_strcasecmp(cmd, "<Stream");

  1208.             if (opening && (stream || feed || redirect)) {

  1209.                 ERROR("Already in a tag\n");

  1210.             } else {

  1211.                 ret = ffserver_parse_config_stream(config, cmd, &p, &stream);

  1212.                 if (ret < 0)

  1213.                     break;

  1214.                 if (opening) {

  1215.                     /* add in stream list */

  1216.                     *last_stream = stream;

  1217.                     last_stream = &stream->next;

  1218.                 }

  1219.             }

  1220.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

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

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

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

  1224.             else {

  1225.                 ret = ffserver_parse_config_redirect(config, cmd, &p,

  1226.                                                      &redirect);

  1227.                 if (ret < 0)

  1228.                     break;

  1229.                 if (opening) {

  1230.                     /* add in stream list */

  1231.                     *last_stream = redirect;

  1232.                     last_stream = &redirect->next;

  1233.                 }

  1234.             }

  1235.         } else {

  1236.             ffserver_parse_config_global(config, cmd, &p);

  1237.         }

  1238.     }

  1239.     if (stream || feed || redirect)

  1240.         ERROR("Missing closing </%s> tag\n",

  1241.               stream ? "Stream" : (feed ? "Feed" : "Redirect"));

  1242. 

  1243.     fclose(f);

  1244.     if (ret < 0)

  1245.         return ret;

  1246.     if (config->errors)

  1247.         return AVERROR(EINVAL);

  1248.     else

  1249.         return 0;

  1250. }

  1251. 

  1252. #undef ERROR

  1253. #undef WARNING

  1254. 

  1255. void ffserver_free_child_args(void *argsp)

  1256. {

  1257.     int i;

  1258.     char **args;

  1259.     if (!argsp)

  1260.         return;

  1261.     args = *(char ***)argsp;

  1262.     if (!args)

  1263.         return;

  1264.     for (i = 0; i < MAX_CHILD_ARGS; i++)

  1265.         av_free(args[i]);

  1266.     av_freep(argsp);

  1267. }