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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,

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

  137.                 filename, line_num, arg);

  138.         errors++;

  139.     } else

  140.         acl.last = acl.first;

  141. 

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

  143. 

  144.     if (arg[0]) {

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

  146.             fprintf(stderr,

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

  148.                     filename, line_num, arg);

  149.             errors++;

  150.         }

  151.     }

  152. 

  153.     if (!errors) {

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

  155.         FFServerIPAddressACL **naclp = 0;

  156. 

  157.         acl.next = 0;

  158.         *nacl = acl;

  159. 

  160.         if (stream)

  161.             naclp = &stream->acl;

  162.         else if (feed)

  163.             naclp = &feed->acl;

  164.         else if (ext_acl)

  165.             naclp = &ext_acl;

  166.         else {

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

  168.                     filename, line_num);

  169.             errors++;

  170.         }

  171. 

  172.         if (naclp) {

  173.             while (*naclp)

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

  175. 

  176.             *naclp = nacl;

  177.         } else

  178.             av_free(nacl);

  179.     }

  180. }

  181. 

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

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

  184.                       FFServerConfig *config)

  185. {

  186.     AVStream *st;

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

  188.     char *enc_config;

  189. 

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

  191.         return;

  192. 

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

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

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

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

  197.     av_opt_set_dict2(av, opts, AV_OPT_SEARCH_CHILDREN);

  198.     if (av_dict_count(*opts))

  199.         av_log(NULL, AV_LOG_WARNING,

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

  201.                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 = "

  268.                     "%s. 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,

  295.                                     AV_LOG_ERROR, &config->errors,

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

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

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

  299.                                     AV_LOG_ERROR, &config->errors,

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

  301.             break;

  302.         case AVMEDIA_TYPE_VIDEO:

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

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

  305.                                     AV_LOG_ERROR, &config->errors,

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

  307.             break;

  308.         default:

  309.             av_assert0(0);

  310.         }

  311.     }

  312. 

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

  314.     if (!st)

  315.         return;

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

  317.     av_dict_free(&recommended);

  318.     av_stream_set_recommended_encoder_configuration(st, enc_config);

  319.     st->codec = av;

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

  321. }

  322. 

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

  324.                               FFServerConfig *config)

  325. {

  326.     int ret;

  327.     AVCodec *codec = avcodec_find_encoder_by_name(codec_name);

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

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

  330.                             &config->errors,

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

  332.         return 0;

  333.     }

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

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

  336.             return ret;

  337.         ctx->codec = codec;

  338.     }

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

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

  341.                             &config->errors,

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

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

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

  345.     return 0;

  346. }

  347. 

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

  349. {

  350.     FILE *f=NULL;

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

  352.     int ret = 0;

  353.     AVCodecContext *avctx;

  354.     const AVCodec *codec;

  355. 

  356.     switch(type) {

  357.     case AV_OPT_FLAG_AUDIO_PARAM:

  358.         avctx = config->dummy_actx;

  359.         break;

  360.     case AV_OPT_FLAG_VIDEO_PARAM:

  361.         avctx = config->dummy_vctx;

  362.         break;

  363.     default:

  364.         av_assert0(0);

  365.     }

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

  367. 

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

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

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

  371.         return AVERROR(EINVAL);

  372.     }

  373. 

  374.     while(!feof(f)){

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

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

  377.             continue;

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

  379.         if(e){

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

  381.                    line);

  382.             ret = AVERROR(EINVAL);

  383.             break;

  384.         }

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

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

  387.         {

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

  389.                 break;

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

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

  392.             ret = AVERROR(EINVAL);

  393.             break;

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

  395.             break;

  396.     }

  397. 

  398.     fclose(f);

  399. 

  400.     return ret;

  401. }

  402. 

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

  404.                                              const char *filename,

  405.                                              const char *mime_type)

  406. {

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

  408. 

  409.     if (fmt) {

  410.         AVOutputFormat *stream_fmt;

  411.         char stream_format_name[64];

  412. 

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

  414.                 fmt->name);

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

  416. 

  417.         if (stream_fmt)

  418.             fmt = stream_fmt;

  419.     }

  420. 

  421.     return fmt;

  422. }

  423. 

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

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

  426.                                  va_list vl)

  427. {

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

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

  430.     if (errors)

  431.         (*errors)++;

  432. }

  433. 

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

  435.                                 int log_level, int *errors,

  436.                                 const char *fmt, ...)

  437. {

  438.     va_list vl;

  439.     va_start(vl, fmt);

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

  441.     va_end(vl);

  442. }

  443. 

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

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

  446.                                   const char *error_msg, ...)

  447. {

  448.     int tmp;

  449.     char *tailp;

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

  451.         goto error;

  452.     errno = 0;

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

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

  455.         goto error;

  456.     if (factor) {

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

  458.             goto error;

  459.         tmp *= factor;

  460.     }

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

  462.         goto error;

  463.     if (dest)

  464.         *dest = tmp;

  465.     return 0;

  466.   error:

  467.     if (config) {

  468.         va_list vl;

  469.         va_start(vl, error_msg);

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

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

  472.         va_end(vl);

  473.     }

  474.     return AVERROR(EINVAL);

  475. }

  476. 

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

  478.                                     float factor, float min, float max,

  479.                                     FFServerConfig *config,

  480.                                     const char *error_msg, ...)

  481. {

  482.     double tmp;

  483.     char *tailp;

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

  485.         goto error;

  486.     errno = 0;

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

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

  489.         goto error;

  490.     if (factor)

  491.         tmp *= factor;

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

  493.         goto error;

  494.     if (dest)

  495.         *dest = tmp;

  496.     return 0;

  497.   error:

  498.     if (config) {

  499.         va_list vl;

  500.         va_start(vl, error_msg);

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

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

  503.         va_end(vl);

  504.     }

  505.     return AVERROR(EINVAL);

  506. }

  507. 

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

  509.                                   FFServerConfig *config)

  510. {

  511.     static int hinted = 0;

  512.     int ret = 0;

  513.     AVDictionaryEntry *e;

  514.     const AVOption *o = NULL;

  515.     const char *option = NULL;

  516.     const char *codec_name = NULL;

  517.     char buff[1024];

  518.     AVCodecContext *ctx;

  519.     AVDictionary **dict;

  520.     enum AVCodecID guessed_codec_id;

  521. 

  522.     switch (type) {

  523.     case AV_OPT_FLAG_VIDEO_PARAM:

  524.         ctx = config->dummy_vctx;

  525.         dict = &config->video_opts;

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

  527.                            config->guessed_video_codec_id : AV_CODEC_ID_H264;

  528.         break;

  529.     case AV_OPT_FLAG_AUDIO_PARAM:

  530.         ctx = config->dummy_actx;

  531.         dict = &config->audio_opts;

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

  533.                            config->guessed_audio_codec_id : AV_CODEC_ID_AAC;

  534.         break;

  535.     default:

  536.         av_assert0(0);

  537.     }

  538. 

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

  540.         //explicit private option

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

  542.         codec_name = buff;

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

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

  545.                                 AV_LOG_ERROR, &config->errors,

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

  547.             return -1;

  548. 

  549.         }

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

  551.         option++;

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

  553.             return ret;

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

  555.             return -1;

  556.     } else {

  557.         option = opt;

  558.     }

  559. 

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

  561.                     AV_OPT_SEARCH_CHILDREN);

  562.     if (!o &&

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

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

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

  566.     if (!o) {

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

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

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

  570.             hinted = 1;

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

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

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

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

  575.                                 opt, avcodec_get_name(guessed_codec_id) ,opt,

  576.                                 arg);

  577.         }

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

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

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

  581.                 arg, av_err2str(ret));

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

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

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

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

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

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

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

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

  590.         return AVERROR(ENOMEM);

  591.     }

  592.     return 0;

  593. }

  594. 

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

  596.                                       int type, FFServerConfig *config)

  597. {

  598.     char buf[22];

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

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

  601. }

  602. 

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

  604.                                         const char **p)

  605. {

  606.     int val;

  607.     char arg[1024];

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

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

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

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

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

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

  614.         if (val < 1024)

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

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

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

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

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

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

  621.                     "instead.\n");

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  640.         config->nb_max_http_connections = val;

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

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

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

  644.                   config->nb_max_http_connections);

  645.         }

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

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

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

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

  650.         config->nb_max_connections = val;

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

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

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

  654.                   config->nb_max_http_connections);

  655.         }

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

  657.         int64_t llval;

  658.         char *tailp;

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

  660.         errno = 0;

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

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

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

  664.         else

  665.             config->max_bandwidth = llval;

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

  667.         if (!config->debug) {

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

  669.                              p);

  670.         }

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

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

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

  674.         config->use_defaults = 0;

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

  676.         config->use_defaults = 1;

  677.     } else

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

  679.     return 0;

  680. }

  681. 

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

  683.                                       FFServerStream **pfeed)

  684. {

  685.     FFServerStream *feed;

  686.     char arg[1024];

  687.     av_assert0(pfeed);

  688.     feed = *pfeed;

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

  690.         char *q;

  691.         FFServerStream *s;

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

  693.         if (!feed)

  694.             return AVERROR(ENOMEM);

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

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

  697.         if (*q)

  698.             *q = '\0';

  699. 

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

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

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

  703.         }

  704. 

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

  706.         /* default feed file */

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

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

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

  710.         feed->is_feed = 1;

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

  712.         *pfeed = feed;

  713.         return 0;

  714.     }

  715.     av_assert0(feed);

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

  717.         int i;

  718. 

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

  720.         if (!feed->child_argv)

  721.             return AVERROR(ENOMEM);

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

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

  724.             if (!arg[0])

  725.                 break;

  726. 

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

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

  729.                 return AVERROR(ENOMEM);

  730.         }

  731. 

  732.         feed->child_argv[i] =

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

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

  735.                         "127.0.0.1" : inet_ntoa(config->http_addr.sin_addr),

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

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

  738.             return AVERROR(ENOMEM);

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

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

  741.                 config->line_num);

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

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

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

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

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

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

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

  749.         if (!arg[0]) {

  750.             feed->truncate = 1;

  751.         } else {

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

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

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

  755.         }

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

  757.         char *p1;

  758.         double fsize;

  759. 

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

  761.         p1 = arg;

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

  763.         switch(av_toupper(*p1)) {

  764.         case 'K':

  765.             fsize *= 1024;

  766.             break;

  767.         case 'M':

  768.             fsize *= 1024 * 1024;

  769.             break;

  770.         case 'G':

  771.             fsize *= 1024 * 1024 * 1024;

  772.             break;

  773.         default:

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

  775.             break;

  776.         }

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

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

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

  780.                   FFM_PACKET_SIZE*4);

  781.         }

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

  783.         *pfeed = NULL;

  784.     } else {

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

  786.     }

  787.     return 0;

  788. }

  789. 

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

  791.                                         FFServerStream **pstream)

  792. {

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

  794.     FFServerStream *stream;

  795.     int val;

  796. 

  797.     av_assert0(pstream);

  798.     stream = *pstream;

  799. 

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

  801.         char *q;

  802.         FFServerStream *s;

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

  804.         if (!stream)

  805.             return AVERROR(ENOMEM);

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

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

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

  809.             av_free(stream);

  810.             avcodec_free_context(&config->dummy_vctx);

  811.             avcodec_free_context(&config->dummy_actx);

  812.             return AVERROR(ENOMEM);

  813.         }

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

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

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

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

  818.         if (q)

  819.             *q = '\0';

  820. 

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

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

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

  824.         }

  825. 

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

  827.         if (stream->fmt) {

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

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

  830.         } else {

  831.             config->guessed_audio_codec_id = AV_CODEC_ID_NONE;

  832.             config->guessed_video_codec_id = AV_CODEC_ID_NONE;

  833.         }

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

  835.         *pstream = stream;

  836.         return 0;

  837.     }

  838.     av_assert0(stream);

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

  840.         FFServerStream *sfeed;

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

  842.         sfeed = config->first_feed;

  843.         while (sfeed) {

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

  845.                 break;

  846.             sfeed = sfeed->next_feed;

  847.         }

  848.         if (!sfeed)

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

  850.                     stream->filename);

  851.         else

  852.             stream->feed = sfeed;

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

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

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

  856.             stream->stream_type = STREAM_TYPE_STATUS;

  857.             stream->fmt = NULL;

  858.         } else {

  859.             stream->stream_type = STREAM_TYPE_LIVE;

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

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

  862.                 strcpy(arg, "mjpeg");

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

  864.             if (!stream->fmt)

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

  866.         }

  867.         if (stream->fmt) {

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

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

  870.         }

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

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

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

  874.         if (!stream->ifmt)

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

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

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

  878.             ffserver_get_arg(stream->feed_filename,

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

  880.         else

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

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

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

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

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

  886.         char key[32];

  887.         int i;

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

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

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

  891.         key[i] = 0;

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

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

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

  895.             goto nomem;

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

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

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

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

  900.             goto nomem;

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

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

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

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

  905.         stream->send_on_key = 1;

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

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

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

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

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

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

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

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

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

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

  916.         float f;

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

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

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

  920.         if (ffserver_save_avoption_int("ab", (int64_t)lrintf(f),

  921.                                        AV_OPT_FLAG_AUDIO_PARAM, config) < 0)

  922.             goto nomem;

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

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

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

  926.             goto nomem;

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

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

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

  930.             goto nomem;

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

  932.         int minrate, maxrate;

  933.         char *dash;

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

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

  936.         if (dash) {

  937.             *dash = '\0';

  938.             dash++;

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

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

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

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

  943.                 goto nomem;

  944.             }

  945.         } else

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

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

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

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

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

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

  952.             goto nomem;

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

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

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

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

  957.             goto nomem;

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

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

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

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

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

  963.             goto nomem;

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

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

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

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

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

  969.             goto nomem;

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

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

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

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

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

  975.            goto nomem;

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

  977.         int ret, w, h;

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

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

  980.         if (ret < 0)

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

  982.         else {

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

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

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

  986.                 goto nomem;

  987.         }

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

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

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

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

  992.             goto nomem;

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

  994.         enum AVPixelFormat pix_fmt;

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

  996.         pix_fmt = av_get_pix_fmt(arg);

  997.         if (pix_fmt == AV_PIX_FMT_NONE)

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

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

  1000.             goto nomem;

  1001.     } else if (!av_strcasecmp(cmd, "VideoGopSize")) {

  1002.         ffserver_get_arg(arg, sizeof(arg), p);

  1003.         if (ffserver_save_avoption("g", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1004.             goto nomem;

  1005.     } else if (!av_strcasecmp(cmd, "VideoIntraOnly")) {

  1006.         if (ffserver_save_avoption("g", "1", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1007.             goto nomem;

  1008.     } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {

  1009.         if (ffserver_save_avoption("mbd", "+bits", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1010.             goto nomem;

  1011.     } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {

  1012.         if (ffserver_save_avoption("mbd", "+bits",  AV_OPT_FLAG_VIDEO_PARAM, config) < 0 || //FIXME remove

  1013.             ffserver_save_avoption("flags", "+mv4", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1014.             goto nomem;

  1015.     } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||

  1016.                !av_strcasecmp(cmd, "AVOptionAudio")) {

  1017.         int ret;

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

  1019.         ffserver_get_arg(arg2, sizeof(arg2), p);

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

  1021.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_VIDEO_PARAM,

  1022.                                          config);

  1023.         else

  1024.             ret = ffserver_save_avoption(arg, arg2, AV_OPT_FLAG_AUDIO_PARAM,

  1025.                                          config);

  1026.         if (ret < 0)

  1027.             goto nomem;

  1028.     } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||

  1029.                !av_strcasecmp(cmd, "AVPresetAudio")) {

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

  1031.         if (!av_strcasecmp(cmd, "AVPresetVideo"))

  1032.             ffserver_opt_preset(arg, AV_OPT_FLAG_VIDEO_PARAM, config);

  1033.         else

  1034.             ffserver_opt_preset(arg, AV_OPT_FLAG_AUDIO_PARAM, config);

  1035.     } else if (!av_strcasecmp(cmd, "VideoTag")) {

  1036.         ffserver_get_arg(arg, sizeof(arg), p);

  1037.         if (strlen(arg) == 4 &&

  1038.             ffserver_save_avoption_int("codec_tag",

  1039.                                        MKTAG(arg[0], arg[1], arg[2], arg[3]),

  1040.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1041.             goto nomem;

  1042.     } else if (!av_strcasecmp(cmd, "BitExact")) {

  1043.         if (ffserver_save_avoption("flags", "+bitexact", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1044.             goto nomem;

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

  1046.         if (ffserver_save_avoption("dct", "fastint", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1047.             goto nomem;

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

  1049.         if (ffserver_save_avoption("idct", "simple", AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1050.             goto nomem;

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

  1052.         ffserver_get_arg(arg, sizeof(arg), p);

  1053.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1054.                                "Invalid Qscale: '%s'\n", arg);

  1055.         if (ffserver_save_avoption("flags", "+qscale", AV_OPT_FLAG_VIDEO_PARAM, config) < 0 ||

  1056.             ffserver_save_avoption_int("global_quality", FF_QP2LAMBDA * val,

  1057.                                        AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1058.             goto nomem;

  1059.     } else if (!av_strcasecmp(cmd, "VideoQDiff")) {

  1060.         ffserver_get_arg(arg, sizeof(arg), p);

  1061.         if (ffserver_save_avoption("qdiff", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1062.             goto nomem;

  1063.     } else if (!av_strcasecmp(cmd, "VideoQMax")) {

  1064.         ffserver_get_arg(arg, sizeof(arg), p);

  1065.         if (ffserver_save_avoption("qmax", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1066.             goto nomem;

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

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

  1069.         if (ffserver_save_avoption("qmin", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1070.             goto nomem;

  1071.     } else if (!av_strcasecmp(cmd, "LumiMask")) {

  1072.         ffserver_get_arg(arg, sizeof(arg), p);

  1073.         if (ffserver_save_avoption("lumi_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1074.             goto nomem;

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

  1076.         ffserver_get_arg(arg, sizeof(arg), p);

  1077.         if (ffserver_save_avoption("dark_mask", arg, AV_OPT_FLAG_VIDEO_PARAM, config) < 0)

  1078.             goto nomem;

  1079.     } else if (!av_strcasecmp(cmd, "NoVideo")) {

  1080.         config->no_video = 1;

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

  1082.         config->no_audio = 1;

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

  1084.         ffserver_parse_acl_row(stream, NULL, NULL, *p, config->filename,

  1085.                 config->line_num);

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

  1087.         ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), p);

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

  1089.         ffserver_get_arg(arg, sizeof(arg), p);

  1090.         av_freep(&stream->rtsp_option);

  1091.         stream->rtsp_option = av_strdup(arg);

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

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

  1094.         if (resolve_host(&stream->multicast_ip, arg))

  1095.             ERROR("Invalid host/IP address: '%s'\n", arg);

  1096.         stream->is_multicast = 1;

  1097.         stream->loop = 1; /* default is looping */

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

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

  1100.         ffserver_set_int_param(&val, arg, 0, 1, 65535, config,

  1101.                 "Invalid MulticastPort: '%s'\n", arg);

  1102.         stream->multicast_port = val;

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

  1104.         ffserver_get_arg(arg, sizeof(arg), p);

  1105.         ffserver_set_int_param(&val, arg, 0, INT_MIN, INT_MAX, config,

  1106.                 "Invalid MulticastTTL: '%s'\n", arg);

  1107.         stream->multicast_ttl = val;

  1108.     } else if (!av_strcasecmp(cmd, "NoLoop")) {

  1109.         stream->loop = 0;

  1110.     } else if (!av_strcasecmp(cmd, "</Stream>")) {

  1111.         config->stream_use_defaults &= 1;

  1112.         if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm")) {

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

  1114.                 config->dummy_actx->codec_id = config->guessed_audio_codec_id;

  1115.             if (!config->no_audio &&

  1116.                 config->dummy_actx->codec_id != AV_CODEC_ID_NONE) {

  1117.                 AVCodecContext *audio_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_actx->codec_id));

  1118.                 add_codec(stream, audio_enc, config);

  1119.             }

  1120.             if (config->dummy_vctx->codec_id == AV_CODEC_ID_NONE)

  1121.                 config->dummy_vctx->codec_id = config->guessed_video_codec_id;

  1122.             if (!config->no_video &&

  1123.                 config->dummy_vctx->codec_id != AV_CODEC_ID_NONE) {

  1124.                 AVCodecContext *video_enc = avcodec_alloc_context3(avcodec_find_encoder(config->dummy_vctx->codec_id));

  1125.                 add_codec(stream, video_enc, config);

  1126.             }

  1127.         }

  1128.         av_dict_free(&config->video_opts);

  1129.         av_dict_free(&config->audio_opts);

  1130.         avcodec_free_context(&config->dummy_vctx);

  1131.         avcodec_free_context(&config->dummy_actx);

  1132.         *pstream = NULL;

  1133.     } else if (!av_strcasecmp(cmd, "File") ||

  1134.                !av_strcasecmp(cmd, "ReadOnlyFile")) {

  1135.         ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename),

  1136.                 p);

  1137.     } else if (!av_strcasecmp(cmd, "UseDefaults")) {

  1138.         if (config->stream_use_defaults > 1)

  1139.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1140.         config->stream_use_defaults = 3;

  1141.     } else if (!av_strcasecmp(cmd, "NoDefaults")) {

  1142.         if (config->stream_use_defaults > 1)

  1143.             WARNING("Multiple UseDefaults/NoDefaults entries.\n");

  1144.         config->stream_use_defaults = 2;

  1145.     } else {

  1146.         ERROR("Invalid entry '%s' inside <Stream></Stream>\n", cmd);

  1147.     }

  1148.     return 0;

  1149.   nomem:

  1150.     av_log(NULL, AV_LOG_ERROR, "Out of memory. Aborting.\n");

  1151.     av_dict_free(&config->video_opts);

  1152.     av_dict_free(&config->audio_opts);

  1153.     avcodec_free_context(&config->dummy_vctx);

  1154.     avcodec_free_context(&config->dummy_actx);

  1155.     return AVERROR(ENOMEM);

  1156. }

  1157. 

  1158. static int ffserver_parse_config_redirect(FFServerConfig *config,

  1159.                                           const char *cmd, const char **p,

  1160.                                           FFServerStream **predirect)

  1161. {

  1162.     FFServerStream *redirect;

  1163.     av_assert0(predirect);

  1164.     redirect = *predirect;

  1165. 

  1166.     if (!av_strcasecmp(cmd, "<Redirect")) {

  1167.         char *q;

  1168.         redirect = av_mallocz(sizeof(FFServerStream));

  1169.         if (!redirect)

  1170.             return AVERROR(ENOMEM);

  1171. 

  1172.         ffserver_get_arg(redirect->filename, sizeof(redirect->filename), p);

  1173.         q = strrchr(redirect->filename, '>');

  1174.         if (*q)

  1175.             *q = '\0';

  1176.         redirect->stream_type = STREAM_TYPE_REDIRECT;

  1177.         *predirect = redirect;

  1178.         return 0;

  1179.     }

  1180.     av_assert0(redirect);

  1181.     if (!av_strcasecmp(cmd, "URL")) {

  1182.         ffserver_get_arg(redirect->feed_filename,

  1183.                 sizeof(redirect->feed_filename), p);

  1184.     } else if (!av_strcasecmp(cmd, "</Redirect>")) {

  1185.         if (!redirect->feed_filename[0])

  1186.             ERROR("No URL found for <Redirect>\n");

  1187.         *predirect = NULL;

  1188.     } else {

  1189.         ERROR("Invalid entry '%s' inside <Redirect></Redirect>\n", cmd);

  1190.     }

  1191.     return 0;

  1192. }

  1193. 

  1194. int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)

  1195. {

  1196.     FILE *f;

  1197.     char line[1024];

  1198.     char cmd[64];

  1199.     const char *p;

  1200.     FFServerStream **last_stream, *stream = NULL, *redirect = NULL;

  1201.     FFServerStream **last_feed, *feed = NULL;

  1202.     int ret = 0;

  1203. 

  1204.     av_assert0(config);

  1205. 

  1206.     f = fopen(filename, "r");

  1207.     if (!f) {

  1208.         ret = AVERROR(errno);

  1209.         av_log(NULL, AV_LOG_ERROR,

  1210.                 "Could not open the configuration file '%s'\n", filename);

  1211.         return ret;

  1212.     }

  1213. 

  1214.     config->first_stream = NULL;

  1215.     config->first_feed = NULL;

  1216.     config->errors = config->warnings = 0;

  1217. 

  1218.     last_stream = &config->first_stream;

  1219.     last_feed = &config->first_feed;

  1220. 

  1221.     config->line_num = 0;

  1222.     while (fgets(line, sizeof(line), f) != NULL) {

  1223.         config->line_num++;

  1224.         p = line;

  1225.         while (av_isspace(*p))

  1226.             p++;

  1227.         if (*p == '\0' || *p == '#')

  1228.             continue;

  1229. 

  1230.         ffserver_get_arg(cmd, sizeof(cmd), &p);

  1231. 

  1232.         if (feed || !av_strcasecmp(cmd, "<Feed")) {

  1233.             int opening = !av_strcasecmp(cmd, "<Feed");

  1234.             if (opening && (stream || feed || redirect)) {

  1235.                 ERROR("Already in a tag\n");

  1236.             } else {

  1237.                 ret = ffserver_parse_config_feed(config, cmd, &p, &feed);

  1238.                 if (ret < 0)

  1239.                     break;

  1240.                 if (opening) {

  1241.                     /* add in stream & feed list */

  1242.                     *last_stream = feed;

  1243.                     *last_feed = feed;

  1244.                     last_stream = &feed->next;

  1245.                     last_feed = &feed->next_feed;

  1246.                 }

  1247.             }

  1248.         } else if (stream || !av_strcasecmp(cmd, "<Stream")) {

  1249.             int opening = !av_strcasecmp(cmd, "<Stream");

  1250.             if (opening && (stream || feed || redirect)) {

  1251.                 ERROR("Already in a tag\n");

  1252.             } else {

  1253.                 ret = ffserver_parse_config_stream(config, cmd, &p, &stream);

  1254.                 if (ret < 0)

  1255.                     break;

  1256.                 if (opening) {

  1257.                     /* add in stream list */

  1258.                     *last_stream = stream;

  1259.                     last_stream = &stream->next;

  1260.                 }

  1261.             }

  1262.         } else if (redirect || !av_strcasecmp(cmd, "<Redirect")) {

  1263.             int opening = !av_strcasecmp(cmd, "<Redirect");

  1264.             if (opening && (stream || feed || redirect))

  1265.                 ERROR("Already in a tag\n");

  1266.             else {

  1267.                 ret = ffserver_parse_config_redirect(config, cmd, &p,

  1268.                                                      &redirect);

  1269.                 if (ret < 0)

  1270.                     break;

  1271.                 if (opening) {

  1272.                     /* add in stream list */

  1273.                     *last_stream = redirect;

  1274.                     last_stream = &redirect->next;

  1275.                 }

  1276.             }

  1277.         } else {

  1278.             ffserver_parse_config_global(config, cmd, &p);

  1279.         }

  1280.     }

  1281.     if (stream || feed || redirect)

  1282.         ERROR("Missing closing </%s> tag\n",

  1283.               stream ? "Stream" : (feed ? "Feed" : "Redirect"));

  1284. 

  1285.     fclose(f);

  1286.     if (ret < 0)

  1287.         return ret;

  1288.     if (config->errors)

  1289.         return AVERROR(EINVAL);

  1290.     else

  1291.         return 0;

  1292. }

  1293. 

  1294. #undef ERROR

  1295. #undef WARNING

  1296. 

  1297. void ffserver_free_child_args(void *argsp)

  1298. {

  1299.     int i;

  1300.     char **args;

  1301.     if (!argsp)

  1302.         return;

  1303.     args = *(char ***)argsp;

  1304.     if (!args)

  1305.         return;

  1306.     for (i = 0; i < MAX_CHILD_ARGS; i++)

  1307.         av_free(args[i]);

  1308.     av_freep(argsp);

  1309. }