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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, int log_level,

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

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

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

  42. 

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

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

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

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

  47. 

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

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

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

  51. {

  52. 

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

  54. #if HAVE_GETADDRINFO

  55.         struct addrinfo *ai, *cur;

  56.         struct addrinfo hints = { 0 };

  57.         hints.ai_family = AF_INET;

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

  59.             return -1;

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

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

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

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

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

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

  66.                 freeaddrinfo(ai);

  67.                 return 0;

  68.             }

  69.         }

  70.         freeaddrinfo(ai);

  71.         return -1;

  72. #else

  73.         struct hostent *hp;

  74.         hp = gethostbyname(hostname);

  75.         if (!hp)

  76.             return -1;

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

  78. #endif

  79.     }

  80.     return 0;

  81. }

  82. 

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

  84. {

  85.     const char *p;

  86.     char *q;

  87.     int quote;

  88. 

  89.     p = *pp;

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

  91.     q = buf;

  92.     quote = 0;

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

  94.         quote = *p++;

  95.     for(;;) {

  96.         if (quote) {

  97.             if (*p == quote)

  98.                 break;

  99.         } else {

  100.             if (av_isspace(*p))

  101.                 break;

  102.         }

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

  104.             break;

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

  106.             *q++ = *p;

  107.         p++;

  108.     }

  109.     *q = '\0';

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

  111.         p++;

  112.     *pp = p;

  113. }

  114. 

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

  116.                             FFServerIPAddressACL *ext_acl,

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

  118. {

  119.     char arg[1024];

  120.     FFServerIPAddressACL acl;

  121.     int errors = 0;

  122. 

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

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

  125.         acl.action = IP_ALLOW;

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

  127.         acl.action = IP_DENY;

  128.     else {

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

  130.                 filename, line_num, arg);

  131.         errors++;

  132.     }

  133. 

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

  135. 

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

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

  138.                 filename, line_num, arg);

  139.         errors++;

  140.     } else

  141.         acl.last = acl.first;

  142. 

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

  144. 

  145.     if (arg[0]) {

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

  147.             fprintf(stderr,

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

  149.                     filename, line_num, arg);

  150.             errors++;

  151.         }

  152.     }

  153. 

  154.     if (!errors) {

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

  156.         FFServerIPAddressACL **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.             errors++;

  171.         }

  172. 

  173.         if (naclp) {

  174.             while (*naclp)

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

  176. 

  177.             *naclp = nacl;

  178.         } else

  179.             av_free(nacl);

  180.     }

  181. }

  182. 

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

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

  185.                       FFServerConfig *config)

  186. {

  187.     AVStream *st;

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

  189.     char *enc_config;

  190. 

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

  192.         return;

  193. 

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

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

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

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

  198.     av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);

  199.     if (av_dict_count(*opts))

  200.         av_log(NULL, AV_LOG_WARNING,

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

  202. 

  203.     if (config->stream_use_defaults) {

  204.     //TODO: reident

  205.     /* compute default parameters */

  206.     switch(av->codec_type) {

  207.     case AVMEDIA_TYPE_AUDIO:

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

  209.             av->bit_rate = 64000;

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

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

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

  213.                     av->bit_rate);

  214.         }

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

  216.             av->sample_rate = 22050;

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

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

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

  220.                     av->sample_rate);

  221.         }

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

  223.             av->channels = 1;

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

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

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

  227.                     av->channels);

  228.         }

  229.         break;

  230.     case AVMEDIA_TYPE_VIDEO:

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

  232.             av->bit_rate = 64000;

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

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

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

  236.                     av->bit_rate);

  237.         }

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

  239.             av->time_base.den = 5;

  240.             av->time_base.num = 1;

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

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

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

  244.                     av->time_base.den);

  245.         }

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

  247.             av->width = 160;

  248.             av->height = 128;

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

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

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

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

  253.         }

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

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

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

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

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

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

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

  261.                     av->bit_rate_tolerance);

  262.         }

  263. 

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

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

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

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

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

  269.                     av->rc_eq);

  270.         }

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

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

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

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

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

  276.                     av->rc_max_rate);

  277.         }

  278. 

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

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

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

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

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

  284.                     av->rc_buffer_size);

  285.         }

  286.         break;

  287.     default:

  288.         abort();

  289.     }

  290.     } else {

  291.         switch(av->codec_type) {

  292.         case AVMEDIA_TYPE_AUDIO:

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

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

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

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

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

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

  299.             break;

  300.         case AVMEDIA_TYPE_VIDEO:

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

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

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

  304.             break;

  305.         default:

  306.             av_assert0(0);

  307.         }

  308.     }

  309. 

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

  311.     if (!st)

  312.         return;

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

  314.     av_dict_free(&recommended);

  315.     av_stream_set_recommended_encoder_configuration(st, enc_config);

  316.     st->codec = av;

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

  318. }

  319. 

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

  321. {

  322.     int ret;

  323.     AVCodec *codec = avcodec_find_encoder_by_name(codec_name);

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

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

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

  327.         return 0;

  328.     }

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

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

  331.             return ret;

  332.         ctx->codec = codec;

  333.     }

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

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

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

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

  338.     return 0;

  339. }

  340. 

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

  342. {

  343.     FILE *f=NULL;

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

  345.     int ret = 0;

  346.     AVCodecContext *avctx;

  347.     const AVCodec *codec;

  348. 

  349.     switch(type) {

  350.     case AV_OPT_FLAG_AUDIO_PARAM:

  351.         avctx = config->dummy_actx;

  352.         break;

  353.     case AV_OPT_FLAG_VIDEO_PARAM:

  354.         avctx = config->dummy_vctx;

  355.         break;

  356.     default:

  357.         av_assert0(0);

  358.     }

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

  360. 

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

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

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

  364.         return AVERROR(EINVAL);

  365.     }

  366. 

  367.     while(!feof(f)){

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

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

  370.             continue;

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

  372.         if(e){

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

  374.             ret = AVERROR(EINVAL);

  375.             break;

  376.         }

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

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

  379.         {

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

  381.                 break;

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

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

  384.             ret = AVERROR(EINVAL);

  385.             break;

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

  387.             break;

  388.     }

  389. 

  390.     fclose(f);

  391. 

  392.     return ret;

  393. }

  394. 

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

  396. {

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

  398. 

  399.     if (fmt) {

  400.         AVOutputFormat *stream_fmt;

  401.         char stream_format_name[64];

  402. 

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

  404.                 fmt->name);

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

  406. 

  407.         if (stream_fmt)

  408.             fmt = stream_fmt;

  409.     }

  410. 

  411.     return fmt;

  412. }

  413. 

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

  415. {

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

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

  418.     if (errors)

  419.         (*errors)++;

  420. }

  421. 

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

  423. {

  424.     va_list vl;

  425.     va_start(vl, fmt);

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

  427.     va_end(vl);

  428. }

  429. 

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

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

  432. {

  433.     int tmp;

  434.     char *tailp;

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

  436.         goto error;

  437.     errno = 0;

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

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

  440.         goto error;

  441.     if (factor) {

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

  443.             goto error;

  444.         tmp *= factor;

  445.     }

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

  447.         goto error;

  448.     if (dest)

  449.         *dest = tmp;

  450.     return 0;

  451.   error:

  452.     if (config) {

  453.         va_list vl;

  454.         va_start(vl, error_msg);

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

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

  457.         va_end(vl);

  458.     }

  459.     return AVERROR(EINVAL);

  460. }

  461. 

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

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

  464. {

  465.     double tmp;

  466.     char *tailp;

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

  468.         goto error;

  469.     errno = 0;

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

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

  472.         goto error;

  473.     if (factor)

  474.         tmp *= factor;

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

  476.         goto error;

  477.     if (dest)

  478.         *dest = tmp;

  479.     return 0;

  480.   error:

  481.     if (config) {

  482.         va_list vl;

  483.         va_start(vl, error_msg);

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

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

  486.         va_end(vl);

  487.     }

  488.     return AVERROR(EINVAL);

  489. }

  490. 

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

  492. {

  493.     static int hinted = 0;

  494.     int ret = 0;

  495.     AVDictionaryEntry *e;

  496.     const AVOption *o = NULL;

  497.     const char *option = NULL;

  498.     const char *codec_name = NULL;

  499.     char buff[1024];

  500.     AVCodecContext *ctx;

  501.     AVDictionary **dict;

  502.     enum AVCodecID guessed_codec_id;

  503. 

  504.     switch (type) {

  505.     case AV_OPT_FLAG_VIDEO_PARAM:

  506.         ctx = config->dummy_vctx;

  507.         dict = &config->video_opts;

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

  509.                            config->guessed_video_codec_id : AV_CODEC_ID_H264;

  510.         break;

  511.     case AV_OPT_FLAG_AUDIO_PARAM:

  512.         ctx = config->dummy_actx;

  513.         dict = &config->audio_opts;

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

  515.                            config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  516.         break;

  517.     default:

  518.         av_assert0(0);

  519.     }

  520. 

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

  522.         //explicit private option

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

  524.         codec_name = buff;

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

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

  527.         option++;

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

  529.             return ret;

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

  531.             return -1;

  532.     } else {

  533.         option = opt;

  534.     }

  535. 

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

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

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

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

  540.     if (!o) {

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

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

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

  544.             hinted = 1;

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

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

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

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

  549.         }

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

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

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

  553.                 arg, av_err2str(ret));

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

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

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

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

  558.                 &config->errors,

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

  560.                 opt, e->value);

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

  562.         return AVERROR(ENOMEM);

  563.     }

  564.     return 0;

  565. }

  566. 

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

  568.                                       int type, FFServerConfig *config)

  569. {

  570.     char buf[22];

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

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

  573. }

  574. 

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

  576.                                         const char **p)

  577. {

  578.     int val;

  579.     char arg[1024];

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

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

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

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

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

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

  586.         if (val < 1024)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  610.         config->nb_max_http_connections = val;

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

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

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

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

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

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

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

  618.         config->nb_max_connections = val;

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

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

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

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

  623.         int64_t llval;

  624.         char *tailp;

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

  626.         errno = 0;

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

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

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

  630.         else

  631.             config->max_bandwidth = llval;

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

  633.         if (!config->debug)

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

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

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

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

  638.         config->use_defaults = 0;

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

  640.         config->use_defaults = 1;

  641.     } else

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

  643.     return 0;

  644. }

  645. 

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

  647.                                       FFServerStream **pfeed)

  648. {

  649.     FFServerStream *feed;

  650.     char arg[1024];

  651.     av_assert0(pfeed);

  652.     feed = *pfeed;

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

  654.         char *q;

  655.         FFServerStream *s;

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

  657.         if (!feed)

  658.             return AVERROR(ENOMEM);

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

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

  661.         if (*q)

  662.             *q = '\0';

  663. 

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

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

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

  667.         }

  668. 

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

  670.         /* default feed file */

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

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

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

  674.         feed->is_feed = 1;

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

  676.         *pfeed = feed;

  677.         return 0;

  678.     }

  679.     av_assert0(feed);

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

  681.         int i;

  682. 

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

  684.         if (!feed->child_argv)

  685.             return AVERROR(ENOMEM);

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

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

  688.             if (!arg[0])

  689.                 break;

  690. 

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

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

  693.                 return AVERROR(ENOMEM);

  694.         }

  695. 

  696.         feed->child_argv[i] =

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

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

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

  700.                         feed->filename);

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

  702.             return AVERROR(ENOMEM);

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

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

  705.                 config->line_num);

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

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

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

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

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

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

  712.         if (!arg[0]) {

  713.             feed->truncate = 1;

  714.         } else {

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

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

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

  718.         }

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

  720.         char *p1;

  721.         double fsize;

  722. 

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

  724.         p1 = arg;

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

  726.         switch(av_toupper(*p1)) {

  727.         case 'K':

  728.             fsize *= 1024;

  729.             break;

  730.         case 'M':

  731.             fsize *= 1024 * 1024;

  732.             break;

  733.         case 'G':

  734.             fsize *= 1024 * 1024 * 1024;

  735.             break;

  736.         default:

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

  738.             break;

  739.         }

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

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

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

  743.                     FFM_PACKET_SIZE*4);

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

  745.         *pfeed = NULL;

  746.     } else {

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

  748.     }

  749.     return 0;

  750. }

  751. 

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

  753.                                         FFServerStream **pstream)

  754. {

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

  756.     FFServerStream *stream;

  757.     int val;

  758. 

  759.     av_assert0(pstream);

  760.     stream = *pstream;

  761. 

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

  763.         char *q;

  764.         FFServerStream *s;

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

  766.         if (!stream)

  767.             return AVERROR(ENOMEM);

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

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

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

  771.             av_free(stream);

  772.             avcodec_free_context(&config->dummy_vctx);

  773.             avcodec_free_context(&config->dummy_actx);

  774.             return AVERROR(ENOMEM);

  775.         }

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

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

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

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

  780.         if (q)

  781.             *q = '\0';

  782. 

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

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

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

  786.         }

  787. 

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

  789.         if (stream->fmt) {

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

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

  792.         } else {

  793.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  794.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  795.         }

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

  797.         *pstream = stream;

  798.         return 0;

  799.     }

  800.     av_assert0(stream);

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

  802.         FFServerStream *sfeed;

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

  804.         sfeed = config->first_feed;

  805.         while (sfeed) {

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

  807.                 break;

  808.             sfeed = sfeed->next_feed;

  809.         }

  810.         if (!sfeed)

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

  812.                     stream->filename);

  813.         else

  814.             stream->feed = sfeed;

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

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

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

  818.             stream->stream_type = STREAM_TYPE_STATUS;

  819.             stream->fmt = NULL;

  820.         } else {

  821.             stream->stream_type = STREAM_TYPE_LIVE;

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

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

  824.                 strcpy(arg, "mjpeg");

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

  826.             if (!stream->fmt)

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

  828.         }

  829.         if (stream->fmt) {

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

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

  832.         }

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

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

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

  836.         if (!stream->ifmt)

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

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

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

  840.             ffserver_get_arg(stream->feed_filename,

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

  842.         else

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

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

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

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

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

  848.         char key[32];

  849.         int i;

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

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

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

  853.         key[i] = 0;

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

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

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

  857.             goto nomem;

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

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

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

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

  862.             goto nomem;

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

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

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

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

  867.         stream->send_on_key = 1;

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

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

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

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

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

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

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

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

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

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

  878.         float f;

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

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

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

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

  883.             goto nomem;

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

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

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

  887.             goto nomem;

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

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

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

  891.             goto nomem;

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

  893.         int minrate, maxrate;

  894.         char *dash;

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

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

  897.         if (dash) {

  898.             *dash = '\0';

  899.             dash++;

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

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

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

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

  904.                 goto nomem;

  905.             }

  906.         } else

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

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

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

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

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

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

  913.             goto nomem;

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

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

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

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

  918.             goto nomem;

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

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

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

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

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

  924.             goto nomem;

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

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

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

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

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

  930.             goto nomem;

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

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

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

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

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

  936.            goto nomem;

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

  938.         int ret, w, h;

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

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

  941.         if (ret < 0)

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

  943.         else {

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

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

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

  947.                 goto nomem;

  948.         }

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

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

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

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

  953.             goto nomem;

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

  955.         enum AVPixelFormat pix_fmt;

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

  957.         pix_fmt = av_get_pix_fmt(arg);

  958.         if (pix_fmt == AV_PIX_FMT_NONE)

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

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

  961.             goto nomem;

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

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

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

  965.             goto nomem;

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

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

  968.             goto nomem;

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

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

  971.             goto nomem;

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

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

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

  975.             goto nomem;

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

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

  978.         int ret;

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

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

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

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

  983.         else

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

  985.         if (ret < 0)

  986.             goto nomem;

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

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

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

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

  991.             ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);

  992.         else

  993.             ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);

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

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

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

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

  998.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  999.             goto nomem;

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

  1001.         if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1002.             goto nomem;

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

  1004.         if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1005.             goto nomem;

  1006.     } else if (!av_strcasecmp(cmd, "IdctSimple")) {

  1007.         if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1008.             goto nomem;

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

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

  1011.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1012.                                "Invalid Qscale: %s\n", arg);

  1013.         if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||

  1014.             ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,

  1015.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1016.             goto nomem;

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

  1018.         ffserver_get_arg(arg, sizeof(arg), p);

  1019.         if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1020.             goto nomem;

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

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

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

  1024.             goto nomem;

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

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

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

  1028.             goto nomem;

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

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

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

  1032.             goto nomem;

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

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

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

  1036.             goto nomem;

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

  1038.         config->no_video = 1;

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

  1040.         config->no_audio = 1;

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

  1042.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1043.                 config->line_num);

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

  1045.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

  1046.     } else if (!av_strcasecmp(cmd, "RTSPOption")) {

  1047.         ffserver_get_arg(arg, sizeof(arg), p);

  1048.         av_freep(&stream->rtsp_option);

  1049.         stream->rtsp_option = av_strdup(arg);

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

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

  1052.         if (resolve_host(&stream->multicast_ip, arg))

  1053.             ERROR("Invalid host/IP address: %s\n", arg);

  1054.         stream->is_multicast = 1;

  1055.         stream->loop = 1; /* default is looping */

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

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

  1058.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

  1059.                 "Invalid MulticastPort: %s\n", arg);

  1060.         stream->multicast_port = val;

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

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

  1063.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1064.                 "Invalid MulticastTTL: %s\n", arg);

  1065.         stream->multicast_ttl = val;

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

  1067.         stream->loop = 0;

  1068.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1069.         config->stream_use_defaults &= 1;

  1070.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

  1071.             if (config->dummy_actx->codec_id == AV_CODEC_ID_NONE)

  1072.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1073.             if (!config->no_audio && config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1074.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1075.                 add_codec(stream, audio_enc, config);

  1076.             }

  1077.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1078.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1079.             if (!config->no_video && config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1080.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1081.                 add_codec(stream, video_enc, config);

  1082.             }

  1083.         }

  1084.         av_dict_free(&config->video_opts);

  1085.         av_dict_free(&config->audio_opts);

  1086.         avcodec_free_context(&config->dummy_vctx);

  1087.         avcodec_free_context(&config->dummy_actx);

  1088.         *pstream = NULL;

  1089.     } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1090.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1091.                 p);

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

  1093.         if (config->stream_use_defaults > 1)

  1094.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1095.         config->stream_use_defaults = 3;

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

  1097.         if (config->stream_use_defaults > 1)

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

  1099.         config->stream_use_defaults = 2;

  1100.     } else {

  1101.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1102.     }

  1103.     return 0;

  1104.   nomem:

  1105.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1106.     av_dict_free(&config->video_opts);

  1107.     av_dict_free(&config->audio_opts);

  1108.     avcodec_free_context(&config->dummy_vctx);

  1109.     avcodec_free_context(&config->dummy_actx);

  1110.     return AVERROR(ENOMEM);

  1111. }

  1112. 

  1113. static int ffserver_parse_config_redirect(FFServerConfig *config, const char *cmd, const char **p,

  1114.                                           FFServerStream **predirect)

  1115. {

  1116.     FFServerStream *redirect;

  1117.     av_assert0(predirect);

  1118.     redirect = *predirect;

  1119. 

  1120.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1121.         char *q;

  1122.         redirect = av_mallocz(sizeof(FFServerStream));

  1123.         if (!redirect)

  1124.             return AVERROR(ENOMEM);

  1125. 

  1126.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1127.         q = strrchr(redirect->filename, '>');

  1128.         if (*q)

  1129.             *q = '\0';

  1130.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1131.         *predirect = redirect;

  1132.         return 0;

  1133.     }

  1134.     av_assert0(redirect);

  1135.     if (!av_strcasecmp(cmd, "URL")) {

  1136.         ffserver_get_arg(redirect->feed_filename,

  1137.                 sizeof(redirect->feed_filename), p);

  1138.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1139.         if (!redirect->feed_filename[0])

  1140.             ERROR("No URL found for <Redirect>\n");

  1141.         *predirect = NULL;

  1142.     } else {

  1143.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1144.     }

  1145.     return 0;

  1146. }

  1147. 

  1148. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1149. {

  1150.     FILE *f;

  1151.     char line[1024];

  1152.     char cmd[64];

  1153.     const char *p;

  1154.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1155.     FFServerStream **last_feed, *feed = NULL;

  1156.     int ret = 0;

  1157. 

  1158.     av_assert0(config);

  1159. 

  1160.     config->line_num = 0;

  1161.     f = fopen(filename, "r");

  1162.     if (!f) {

  1163.         ret = AVERROR(errno);

  1164.         av_log(NULL, AV_LOG_ERROR,

  1165.                 "Could not open the configuration file '%s'\n", filename);

  1166.         return ret;

  1167.     }

  1168. 

  1169.     config->first_stream = NULL;

  1170.     last_stream = &config->first_stream;

  1171.     config->first_feed = NULL;

  1172.     last_feed = &config->first_feed;

  1173.     config->errors = config->warnings = 0;

  1174. 

  1175.     for(;;) {

  1176.         if (fgets(line, sizeof(line), f) == NULL)

  1177.             break;

  1178.         config->line_num++;

  1179.         p = line;

  1180.         while (av_isspace(*p))

  1181.             p++;

  1182.         if (*p == '\0' || *p == '#')

  1183.             continue;

  1184. 

  1185.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1186. 

  1187.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1188.             int opening = !av_strcasecmp(cmd, "<Feed");

  1189.             if (opening && (stream || feed || redirect)) {

  1190.                 ERROR("Already in a tag\n");

  1191.             } else {

  1192.                 if ((ret = ffserver_parse_config_feed(config, cmd, &p, &feed)) < 0)

  1193.                     break;

  1194.                 if (opening) {

  1195.                     /* add in stream list */

  1196.                     *last_stream = feed;

  1197.                     last_stream = &feed->next;

  1198.                     /* add in feed list */

  1199.                     *last_feed = feed;

  1200.                     last_feed = &feed->next_feed;

  1201.                 }

  1202.             }

  1203.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1204.             int opening = !av_strcasecmp(cmd, "<Stream");

  1205.             if (opening && (stream || feed || redirect)) {

  1206.                 ERROR("Already in a tag\n");

  1207.             } else {

  1208.                 if ((ret = ffserver_parse_config_stream(config, cmd, &p, &stream)) < 0)

  1209.                     break;

  1210.                 if (opening) {

  1211.                     /* add in stream list */

  1212.                     *last_stream = stream;

  1213.                     last_stream = &stream->next;

  1214.                 }

  1215.             }

  1216.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1217.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1218.             if (opening && (stream || feed || redirect))

  1219.                 ERROR("Already in a tag\n");

  1220.             else {

  1221.                 if ((ret = ffserver_parse_config_redirect(config, cmd, &p, &redirect)) < 0)

  1222.                     break;

  1223.                 if (opening) {

  1224.                     /* add in stream list */

  1225.                     *last_stream = redirect;

  1226.                     last_stream = &redirect->next;

  1227.                 }

  1228.             }

  1229.         } else {

  1230.             ffserver_parse_config_global(config, cmd, &p);

  1231.         }

  1232.     }

  1233.     if (stream || feed || redirect)

  1234.         ERROR("Not closed tag %s\n", stream ? "<Stream>" : (feed ? "<Feed>" : "<Redirect>"));

  1235. 

  1236.     fclose(f);

  1237.     if (ret < 0)

  1238.         return ret;

  1239.     if (config->errors)

  1240.         return AVERROR(EINVAL);

  1241.     else

  1242.         return 0;

  1243. }

  1244. 

  1245. #undef ERROR

  1246. #undef WARNING

  1247. 

  1248. void ffserver_free_child_args(void *argsp)

  1249. {

  1250.     int i;

  1251.     char **args;

  1252.     if (!argsp)

  1253.         return;

  1254.     args = *(char ***)argsp;

  1255.     if (!args)

  1256.         return;

  1257.     for (i = 0; i < MAX_CHILD_ARGS; i++)

  1258.         av_free(args[i]);

  1259.     av_freep(argsp);

  1260. }