ffserver.c

    if (!(f = get_preset_file(filename, sizeof(filename), arg, 0,
                              codec ? codec->name : NULL))) {
        fprintf(stderr, "File for preset '%s' not found\n", arg);
        return 1;
    }

    while(!feof(f)){
        int e= fscanf(f, "%999[^\n]\n", line) - 1;
        if(line[0] == '#' && !e)
            continue;
        e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;
        if(e){
            fprintf(stderr, "%s: Invalid syntax: '%s'\n", filename, line);
            ret = 1;
            break;
        }
        if(!strcmp(tmp, "acodec")){
            *audio_id = opt_codec(tmp2, AVMEDIA_TYPE_AUDIO);
        }else if(!strcmp(tmp, "vcodec")){
            *video_id = opt_codec(tmp2, AVMEDIA_TYPE_VIDEO);
        }else if(!strcmp(tmp, "scodec")){
            /* opt_subtitle_codec(tmp2); */
        }else if(ffserver_opt_default(tmp, tmp2, avctx, type) < 0){
            fprintf(stderr, "%s: Invalid option or argument: '%s', parsed as '%s' = '%s'\n", filename, line, tmp, tmp2);
            ret = 1;
            break;
        }
    }

    fclose(f);

    return ret;
}

static AVOutputFormat *ffserver_guess_format(const char *short_name, const char *filename,
                                             const char *mime_type)
{
    AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);

    if (fmt) {
        AVOutputFormat *stream_fmt;
        char stream_format_name[64];

        snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
        stream_fmt = av_guess_format(stream_format_name, NULL, NULL);

        if (stream_fmt)
            fmt = stream_fmt;
    }

    return fmt;
}

static void report_config_error(const char *filename, int line_num, int log_level, int *errors, const char *fmt, ...)
{
    va_list vl;
    va_start(vl, fmt);
    av_log(NULL, log_level, "%s:%d: ", filename, line_num);
    av_vlog(NULL, log_level, fmt, vl);
    va_end(vl);

    (*errors)++;
}

static int parse_ffconfig(const char *filename)
{
    FILE *f;
    char line[1024];
    char cmd[64];
    char arg[1024], arg2[1024];
    const char *p;
    int val, errors, warnings, line_num;
    FFStream **last_stream, *stream, *redirect;
    FFStream **last_feed, *feed, *s;
    AVCodecContext audio_enc, video_enc;
    enum AVCodecID audio_id, video_id;
    int ret = 0;

    f = fopen(filename, "r");
    if (!f) {
        ret = AVERROR(errno);
        av_log(NULL, AV_LOG_ERROR, "Could not open the configuration file '%s'\n", filename);
        return ret;
    }

    errors = warnings = 0;
    line_num = 0;
    first_stream = NULL;
    last_stream = &first_stream;
    first_feed = NULL;
    last_feed = &first_feed;
    stream = NULL;
    feed = NULL;
    redirect = NULL;
    audio_id = AV_CODEC_ID_NONE;
    video_id = AV_CODEC_ID_NONE;
#define ERROR(...)   report_config_error(filename, line_num, AV_LOG_ERROR,   &errors,   __VA_ARGS__)
#define WARNING(...) report_config_error(filename, line_num, AV_LOG_WARNING, &warnings, __VA_ARGS__)

    for(;;) {
        if (fgets(line, sizeof(line), f) == NULL)
            break;
        line_num++;
        p = line;
        while (av_isspace(*p))
            p++;
        if (*p == '\0' || *p == '#')
            continue;

        get_arg(cmd, sizeof(cmd), &p);

        if (!av_strcasecmp(cmd, "Port")) {
            get_arg(arg, sizeof(arg), &p);
            val = atoi(arg);
            if (val < 1 || val > 65536) {
                ERROR("Invalid_port: %s\n", arg);
            }
            my_http_addr.sin_port = htons(val);
        } else if (!av_strcasecmp(cmd, "BindAddress")) {
            get_arg(arg, sizeof(arg), &p);
            if (resolve_host(&my_http_addr.sin_addr, arg) != 0) {
                ERROR("%s:%d: Invalid host/IP address: %s\n", arg);
            }
        } else if (!av_strcasecmp(cmd, "NoDaemon")) {
            WARNING("NoDaemon option has no effect, you should remove it\n");
        } else if (!av_strcasecmp(cmd, "RTSPPort")) {
            get_arg(arg, sizeof(arg), &p);
            val = atoi(arg);
            if (val < 1 || val > 65536) {
                ERROR("%s:%d: Invalid port: %s\n", arg);
            }
            my_rtsp_addr.sin_port = htons(atoi(arg));
        } else if (!av_strcasecmp(cmd, "RTSPBindAddress")) {
            get_arg(arg, sizeof(arg), &p);
            if (resolve_host(&my_rtsp_addr.sin_addr, arg) != 0) {
                ERROR("Invalid host/IP address: %s\n", arg);
            }
        } else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) {
            get_arg(arg, sizeof(arg), &p);
            val = atoi(arg);
            if (val < 1 || val > 65536) {
                ERROR("Invalid MaxHTTPConnections: %s\n", arg);
            }
            nb_max_http_connections = val;
        } else if (!av_strcasecmp(cmd, "MaxClients")) {
            get_arg(arg, sizeof(arg), &p);
            val = atoi(arg);
            if (val < 1 || val > nb_max_http_connections) {
                ERROR("Invalid MaxClients: %s\n", arg);
            } else {
                nb_max_connections = val;
            }
        } else if (!av_strcasecmp(cmd, "MaxBandwidth")) {
            int64_t llval;
            get_arg(arg, sizeof(arg), &p);
            llval = strtoll(arg, NULL, 10);
            if (llval < 10 || llval > 10000000) {
                ERROR("Invalid MaxBandwidth: %s\n", arg);
            } else
                max_bandwidth = llval;
        } else if (!av_strcasecmp(cmd, "CustomLog")) {
            if (!ffserver_debug)
                get_arg(logfilename, sizeof(logfilename), &p);
        } else if (!av_strcasecmp(cmd, "<Feed")) {
            /*********************************************/
            /* Feed related options */
            char *q;
            if (stream || feed) {
                ERROR("Already in a tag\n");
            } else {
                feed = av_mallocz(sizeof(FFStream));
                if (!feed) {
                    ret = AVERROR(ENOMEM);
                    goto end;
                }
                get_arg(feed->filename, sizeof(feed->filename), &p);
                q = strrchr(feed->filename, '>');
                if (*q)
                    *q = '\0';

                for (s = first_feed; s; s = s->next) {
                    if (!strcmp(feed->filename, s->filename)) {
                        ERROR("Feed '%s' already registered\n", s->filename);
                    }
                }

                feed->fmt = av_guess_format("ffm", NULL, NULL);
                /* default feed file */
                snprintf(feed->feed_filename, sizeof(feed->feed_filename),
                         "/tmp/%s.ffm", feed->filename);
                feed->feed_max_size = 5 * 1024 * 1024;
                feed->is_feed = 1;
                feed->feed = feed; /* self feeding :-) */

                /* add in stream list */
                *last_stream = feed;
                last_stream = &feed->next;
                /* add in feed list */
                *last_feed = feed;
                last_feed = &feed->next_feed;
            }
        } else if (!av_strcasecmp(cmd, "Launch")) {
            if (feed) {
                int i;

                feed->child_argv = av_mallocz(64 * sizeof(char *));
                if (!feed->child_argv) {
                    ret = AVERROR(ENOMEM);
                    goto end;
                }
                for (i = 0; i < 62; i++) {
                    get_arg(arg, sizeof(arg), &p);
                    if (!arg[0])
                        break;

                    feed->child_argv[i] = av_strdup(arg);
                    if (!feed->child_argv[i]) {
                        ret = AVERROR(ENOMEM);
                        goto end;
                    }
                }

                feed->child_argv[i] =
                    av_asprintf("http://%s:%d/%s",
                                (my_http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :
                                inet_ntoa(my_http_addr.sin_addr), ntohs(my_http_addr.sin_port),
                                feed->filename);
                if (!feed->child_argv[i]) {
                    ret = AVERROR(ENOMEM);
                    goto end;
                }
            }
        } else if (!av_strcasecmp(cmd, "File") || !av_strcasecmp(cmd, "ReadOnlyFile")) {
            if (feed) {
                get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
                feed->readonly = !av_strcasecmp(cmd, "ReadOnlyFile");
            } else if (stream) {
                get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
            }
        } else if (!av_strcasecmp(cmd, "Truncate")) {
            if (feed) {
                get_arg(arg, sizeof(arg), &p);
                /* assume Truncate is true in case no argument is specified */
                if (!arg[0]) {
                    feed->truncate = 1;
                } else {
                    WARNING("Truncate N syntax in configuration file is deprecated, "
                            "use Truncate alone with no arguments\n");
                    feed->truncate = strtod(arg, NULL);
                }
            }
        } else if (!av_strcasecmp(cmd, "FileMaxSize")) {
            if (feed) {
                char *p1;
                double fsize;

                get_arg(arg, sizeof(arg), &p);
                p1 = arg;
                fsize = strtod(p1, &p1);
                switch(av_toupper(*p1)) {
                case 'K':
                    fsize *= 1024;
                    break;
                case 'M':
                    fsize *= 1024 * 1024;
                    break;
                case 'G':
                    fsize *= 1024 * 1024 * 1024;
                    break;
                }
                feed->feed_max_size = (int64_t)fsize;
                if (feed->feed_max_size < FFM_PACKET_SIZE*4) {
                    ERROR("Feed max file size is too small, must be at least %d\n", FFM_PACKET_SIZE*4);
                }
            }
        } else if (!av_strcasecmp(cmd, "</Feed>")) {
            if (!feed) {
                ERROR("No corresponding <Feed> for </Feed>\n");
            }
            feed = NULL;
        } else if (!av_strcasecmp(cmd, "<Stream")) {
            /*********************************************/
            /* Stream related options */
            char *q;
            if (stream || feed) {
                ERROR("Already in a tag\n");
            } else {
                FFStream *s;
                stream = av_mallocz(sizeof(FFStream));
                if (!stream) {
                    ret = AVERROR(ENOMEM);
                    goto end;
                }
                get_arg(stream->filename, sizeof(stream->filename), &p);
                q = strrchr(stream->filename, '>');
                if (q)
                    *q = '\0';

                for (s = first_stream; s; s = s->next) {
                    if (!strcmp(stream->filename, s->filename)) {
                        ERROR("Stream '%s' already registered\n", s->filename);
                    }
                }

                stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL);
                avcodec_get_context_defaults3(&video_enc, NULL);
                avcodec_get_context_defaults3(&audio_enc, NULL);

                audio_id = AV_CODEC_ID_NONE;
                video_id = AV_CODEC_ID_NONE;
                if (stream->fmt) {
                    audio_id = stream->fmt->audio_codec;
                    video_id = stream->fmt->video_codec;
                }

                *last_stream = stream;
                last_stream = &stream->next;
            }
        } else if (!av_strcasecmp(cmd, "Feed")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                FFStream *sfeed;

                sfeed = first_feed;
                while (sfeed != NULL) {
                    if (!strcmp(sfeed->filename, arg))
                        break;
                    sfeed = sfeed->next_feed;
                }
                if (!sfeed)
                    ERROR("Feed with name '%s' for stream '%s' is not defined\n", arg, stream->filename);
                else
                    stream->feed = sfeed;
            }
        } else if (!av_strcasecmp(cmd, "Format")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                if (!strcmp(arg, "status")) {
                    stream->stream_type = STREAM_TYPE_STATUS;
                    stream->fmt = NULL;
                } else {
                    stream->stream_type = STREAM_TYPE_LIVE;
                    /* jpeg cannot be used here, so use single frame jpeg */
                    if (!strcmp(arg, "jpeg"))
                        strcpy(arg, "mjpeg");
                    stream->fmt = ffserver_guess_format(arg, NULL, NULL);
                    if (!stream->fmt) {
                        ERROR("Unknown Format: %s\n", arg);
                    }
                }
                if (stream->fmt) {
                    audio_id = stream->fmt->audio_codec;
                    video_id = stream->fmt->video_codec;
                }
            }
        } else if (!av_strcasecmp(cmd, "InputFormat")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                stream->ifmt = av_find_input_format(arg);
                if (!stream->ifmt) {
                    ERROR("Unknown input format: %s\n", arg);
                }
            }
        } else if (!av_strcasecmp(cmd, "FaviconURL")) {
            if (stream && stream->stream_type == STREAM_TYPE_STATUS) {
                get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
            } else {
                ERROR("FaviconURL only permitted for status streams\n");
            }
        } else if (!av_strcasecmp(cmd, "Author")    ||
                   !av_strcasecmp(cmd, "Comment")   ||
                   !av_strcasecmp(cmd, "Copyright") ||
                   !av_strcasecmp(cmd, "Title")) {
            get_arg(arg, sizeof(arg), &p);

            if (stream) {
                char key[32];
                int i, ret;

                for (i = 0; i < strlen(cmd); i++)
                    key[i] = av_tolower(cmd[i]);
                key[i] = 0;
                WARNING("'%s' option in configuration file is deprecated, "
                        "use 'Metadata %s VALUE' instead\n", cmd, key);
                if ((ret = av_dict_set(&stream->metadata, key, arg, 0)) < 0) {
                    ERROR("Could not set metadata '%s' to value '%s': %s\n",
                          key, arg, av_err2str(ret));
                }
            }
        } else if (!av_strcasecmp(cmd, "Metadata")) {
            get_arg(arg, sizeof(arg), &p);
            get_arg(arg2, sizeof(arg2), &p);
            if (stream) {
                int ret;
                if ((ret = av_dict_set(&stream->metadata, arg, arg2, 0)) < 0) {
                    ERROR("Could not set metadata '%s' to value '%s': %s\n",
                          arg, arg2, av_err2str(ret));
                }
            }
        } else if (!av_strcasecmp(cmd, "Preroll")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                stream->prebuffer = atof(arg) * 1000;
        } else if (!av_strcasecmp(cmd, "StartSendOnKey")) {
            if (stream)
                stream->send_on_key = 1;
        } else if (!av_strcasecmp(cmd, "AudioCodec")) {
            get_arg(arg, sizeof(arg), &p);
            audio_id = opt_codec(arg, AVMEDIA_TYPE_AUDIO);
            if (audio_id == AV_CODEC_ID_NONE) {
                ERROR("Unknown AudioCodec: %s\n", arg);
            }
        } else if (!av_strcasecmp(cmd, "VideoCodec")) {
            get_arg(arg, sizeof(arg), &p);
            video_id = opt_codec(arg, AVMEDIA_TYPE_VIDEO);
            if (video_id == AV_CODEC_ID_NONE) {
                ERROR("Unknown VideoCodec: %s\n", arg);
            }
        } else if (!av_strcasecmp(cmd, "MaxTime")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                stream->max_time = atof(arg) * 1000;
        } else if (!av_strcasecmp(cmd, "AudioBitRate")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                audio_enc.bit_rate = lrintf(atof(arg) * 1000);
        } else if (!av_strcasecmp(cmd, "AudioChannels")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                audio_enc.channels = atoi(arg);
        } else if (!av_strcasecmp(cmd, "AudioSampleRate")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                audio_enc.sample_rate = atoi(arg);
        } else if (!av_strcasecmp(cmd, "VideoBitRateRange")) {
            if (stream) {
                int minrate, maxrate;

                get_arg(arg, sizeof(arg), &p);

                if (sscanf(arg, "%d-%d", &minrate, &maxrate) == 2) {
                    video_enc.rc_min_rate = minrate * 1000;
                    video_enc.rc_max_rate = maxrate * 1000;
                } else {
                    ERROR("Incorrect format for VideoBitRateRange -- should be <min>-<max>: %s\n", arg);
                }
            }
        } else if (!av_strcasecmp(cmd, "Debug")) {
            if (stream) {
                get_arg(arg, sizeof(arg), &p);
                video_enc.debug = strtol(arg,0,0);
            }
        } else if (!av_strcasecmp(cmd, "Strict")) {
            if (stream) {
                get_arg(arg, sizeof(arg), &p);
                video_enc.strict_std_compliance = atoi(arg);
            }
        } else if (!av_strcasecmp(cmd, "VideoBufferSize")) {
            if (stream) {
                get_arg(arg, sizeof(arg), &p);
                video_enc.rc_buffer_size = atoi(arg) * 8*1024;
            }
        } else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) {
            if (stream) {
                get_arg(arg, sizeof(arg), &p);
                video_enc.bit_rate_tolerance = atoi(arg) * 1000;
            }
        } else if (!av_strcasecmp(cmd, "VideoBitRate")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                video_enc.bit_rate = atoi(arg) * 1000;
            }
        } else if (!av_strcasecmp(cmd, "VideoSize")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                ret = av_parse_video_size(&video_enc.width, &video_enc.height, arg);
                if (ret < 0) {
                    ERROR("Invalid video size '%s'\n", arg);
                } else {
                    if ((video_enc.width % 16) != 0 ||
                        (video_enc.height % 16) != 0) {
                        ERROR("Image size must be a multiple of 16\n");
                    }
                }
            }
        } else if (!av_strcasecmp(cmd, "VideoFrameRate")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                AVRational frame_rate;
                if (av_parse_video_rate(&frame_rate, arg) < 0) {
                    ERROR("Incorrect frame rate: %s\n", arg);
                } else {
                    video_enc.time_base.num = frame_rate.den;
                    video_enc.time_base.den = frame_rate.num;
                }
            }
        } else if (!av_strcasecmp(cmd, "PixelFormat")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                video_enc.pix_fmt = av_get_pix_fmt(arg);
                if (video_enc.pix_fmt == AV_PIX_FMT_NONE) {
                    ERROR("Unknown pixel format: %s\n", arg);
                }
            }
        } else if (!av_strcasecmp(cmd, "VideoGopSize")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                video_enc.gop_size = atoi(arg);
        } else if (!av_strcasecmp(cmd, "VideoIntraOnly")) {
            if (stream)
                video_enc.gop_size = 1;
        } else if (!av_strcasecmp(cmd, "VideoHighQuality")) {
            if (stream)
                video_enc.mb_decision = FF_MB_DECISION_BITS;
        } else if (!av_strcasecmp(cmd, "Video4MotionVector")) {
            if (stream) {
                video_enc.mb_decision = FF_MB_DECISION_BITS; //FIXME remove
                video_enc.flags |= CODEC_FLAG_4MV;
            }
        } else if (!av_strcasecmp(cmd, "AVOptionVideo") ||
                   !av_strcasecmp(cmd, "AVOptionAudio")) {
            AVCodecContext *avctx;
            int type;
            get_arg(arg, sizeof(arg), &p);
            get_arg(arg2, sizeof(arg2), &p);
            if (!av_strcasecmp(cmd, "AVOptionVideo")) {
                avctx = &video_enc;
                type = AV_OPT_FLAG_VIDEO_PARAM;
            } else {
                avctx = &audio_enc;
                type = AV_OPT_FLAG_AUDIO_PARAM;
            }
            if (ffserver_opt_default(arg, arg2, avctx, type|AV_OPT_FLAG_ENCODING_PARAM)) {
                ERROR("Error setting %s option to %s %s\n", cmd, arg, arg2);
            }
        } else if (!av_strcasecmp(cmd, "AVPresetVideo") ||
                   !av_strcasecmp(cmd, "AVPresetAudio")) {
            AVCodecContext *avctx;
            int type;
            get_arg(arg, sizeof(arg), &p);
            if (!av_strcasecmp(cmd, "AVPresetVideo")) {
                avctx = &video_enc;
                video_enc.codec_id = video_id;
                type = AV_OPT_FLAG_VIDEO_PARAM;
            } else {
                avctx = &audio_enc;
                audio_enc.codec_id = audio_id;
                type = AV_OPT_FLAG_AUDIO_PARAM;
            }
            if (ffserver_opt_preset(arg, avctx, type|AV_OPT_FLAG_ENCODING_PARAM, &audio_id, &video_id)) {
                ERROR("AVPreset error: %s\n", arg);
            }
        } else if (!av_strcasecmp(cmd, "VideoTag")) {
            get_arg(arg, sizeof(arg), &p);
            if ((strlen(arg) == 4) && stream)
                video_enc.codec_tag = MKTAG(arg[0], arg[1], arg[2], arg[3]);
        } else if (!av_strcasecmp(cmd, "BitExact")) {
            if (stream)
                video_enc.flags |= CODEC_FLAG_BITEXACT;
        } else if (!av_strcasecmp(cmd, "DctFastint")) {
            if (stream)
                video_enc.dct_algo  = FF_DCT_FASTINT;
        } else if (!av_strcasecmp(cmd, "IdctSimple")) {
            if (stream)
                video_enc.idct_algo = FF_IDCT_SIMPLE;
        } else if (!av_strcasecmp(cmd, "Qscale")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                video_enc.flags |= CODEC_FLAG_QSCALE;
                video_enc.global_quality = FF_QP2LAMBDA * atoi(arg);
            }
        } else if (!av_strcasecmp(cmd, "VideoQDiff")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                video_enc.max_qdiff = atoi(arg);
                if (video_enc.max_qdiff < 1 || video_enc.max_qdiff > 31) {
                    ERROR("VideoQDiff out of range\n");
                }
            }
        } else if (!av_strcasecmp(cmd, "VideoQMax")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                video_enc.qmax = atoi(arg);
                if (video_enc.qmax < 1 || video_enc.qmax > 31) {
                    ERROR("VideoQMax out of range\n");
                }
            }
        } else if (!av_strcasecmp(cmd, "VideoQMin")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                video_enc.qmin = atoi(arg);
                if (video_enc.qmin < 1 || video_enc.qmin > 31) {
                    ERROR("VideoQMin out of range\n");
                }
            }
        } else if (!av_strcasecmp(cmd, "LumiMask")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                video_enc.lumi_masking = atof(arg);
        } else if (!av_strcasecmp(cmd, "DarkMask")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                video_enc.dark_masking = atof(arg);
        } else if (!av_strcasecmp(cmd, "NoVideo")) {
            video_id = AV_CODEC_ID_NONE;
        } else if (!av_strcasecmp(cmd, "NoAudio")) {
            audio_id = AV_CODEC_ID_NONE;
        } else if (!av_strcasecmp(cmd, "ACL")) {
            parse_acl_row(stream, feed, NULL, p, filename, line_num);
        } else if (!av_strcasecmp(cmd, "DynamicACL")) {
            if (stream) {
                get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), &p);
            }
        } else if (!av_strcasecmp(cmd, "RTSPOption")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                av_freep(&stream->rtsp_option);
                stream->rtsp_option = av_strdup(arg);
            }
        } else if (!av_strcasecmp(cmd, "MulticastAddress")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream) {
                if (resolve_host(&stream->multicast_ip, arg) != 0) {
                    ERROR("Invalid host/IP address: %s\n", arg);
                }
                stream->is_multicast = 1;
                stream->loop = 1; /* default is looping */
            }
        } else if (!av_strcasecmp(cmd, "MulticastPort")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                stream->multicast_port = atoi(arg);
        } else if (!av_strcasecmp(cmd, "MulticastTTL")) {
            get_arg(arg, sizeof(arg), &p);
            if (stream)
                stream->multicast_ttl = atoi(arg);
        } else if (!av_strcasecmp(cmd, "NoLoop")) {
            if (stream)
                stream->loop = 0;
        } else if (!av_strcasecmp(cmd, "</Stream>")) {
            if (!stream) {
                ERROR("No corresponding <Stream> for </Stream>\n");
            } else {
                if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm") != 0) {
                    if (audio_id != AV_CODEC_ID_NONE) {
                        audio_enc.codec_type = AVMEDIA_TYPE_AUDIO;
                        audio_enc.codec_id = audio_id;
                        add_codec(stream, &audio_enc);
                    }
                    if (video_id != AV_CODEC_ID_NONE) {
                        video_enc.codec_type = AVMEDIA_TYPE_VIDEO;
                        video_enc.codec_id = video_id;
                        add_codec(stream, &video_enc);
                    }
                }
                stream = NULL;
            }
        } else if (!av_strcasecmp(cmd, "<Redirect")) {
            /*********************************************/
            char *q;
            if (stream || feed || redirect) {
                ERROR("Already in a tag\n");
            } else {
                redirect = av_mallocz(sizeof(FFStream));
                if (!redirect) {
                    ret = AVERROR(ENOMEM);
                    goto end;
                }
                *last_stream = redirect;
                last_stream = &redirect->next;

                get_arg(redirect->filename, sizeof(redirect->filename), &p);
                q = strrchr(redirect->filename, '>');
                if (*q)
                    *q = '\0';
                redirect->stream_type = STREAM_TYPE_REDIRECT;
            }
        } else if (!av_strcasecmp(cmd, "URL")) {
            if (redirect)
                get_arg(redirect->feed_filename, sizeof(redirect->feed_filename), &p);
        } else if (!av_strcasecmp(cmd, "</Redirect>")) {
            if (!redirect) {
                ERROR("No corresponding <Redirect> for </Redirect>\n");
            } else {
                if (!redirect->feed_filename[0]) {
                    ERROR("No URL found for <Redirect>\n");
                }
                redirect = NULL;
            }
        } else if (!av_strcasecmp(cmd, "LoadModule")) {
            ERROR("Loadable modules no longer supported\n");
        } else {
            ERROR("Incorrect keyword: '%s'\n", cmd);
        }
    }
#undef ERROR

end:
    fclose(f);
    if (ret < 0)
        return ret;
    if (errors)
        return AVERROR(EINVAL);
    else
        return 0;
}

static void handle_child_exit(int sig)
{
    pid_t pid;
    int status;

    while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
        FFStream *feed;

        for (feed = first_feed; feed; feed = feed->next) {
            if (feed->pid == pid) {
                int uptime = time(0) - feed->pid_start;

                feed->pid = 0;
                fprintf(stderr, "%s: Pid %d exited with status %d after %d seconds\n", feed->filename, pid, status, uptime);

                if (uptime < 30)
                    /* Turn off any more restarts */
                    feed->child_argv = 0;
            }
        }
    }

    need_to_start_children = 1;
}

static void opt_debug(void)
{
    ffserver_debug = 1;
    logfilename[0] = '-';
}

void show_help_default(const char *opt, const char *arg)
{
    printf("usage: ffserver [options]\n"
           "Hyper fast multi format Audio/Video streaming server\n");
    printf("\n");
    show_help_options(options, "Main options:", 0, 0, 0);
}

static const OptionDef options[] = {
#include "cmdutils_common_opts.h"
    { "n", OPT_BOOL, {(void *)&no_launch }, "enable no-launch mode" },
    { "d", 0, {(void*)opt_debug}, "enable debug mode" },
    { "f", HAS_ARG | OPT_STRING, {(void*)&config_filename }, "use configfile instead of /etc/ffserver.conf", "configfile" },
    { NULL },
};

int main(int argc, char **argv)
{
    struct sigaction sigact = { { 0 } };
    int ret = 0;

    config_filename = av_strdup("/etc/ffserver.conf");

    parse_loglevel(argc, argv, options);
    av_register_all();
    avformat_network_init();

    show_banner(argc, argv, options);

    my_program_name = argv[0];

    parse_options(NULL, argc, argv, options, NULL);

    unsetenv("http_proxy");             /* Kill the http_proxy */

    av_lfg_init(&random_state, av_get_random_seed());

    sigact.sa_handler = handle_child_exit;
    sigact.sa_flags = SA_NOCLDSTOP | SA_RESTART;
    sigaction(SIGCHLD, &sigact, 0);

    if ((ret = parse_ffconfig(config_filename)) < 0) {
        fprintf(stderr, "Error reading configuration file '%s': %s\n",
                config_filename, av_err2str(ret));
        exit(1);
    }
    av_freep(&config_filename);

    /* open log file if needed */
    if (logfilename[0] != '\0') {
        if (!strcmp(logfilename, "-"))
            logfile = stdout;
        else
            logfile = fopen(logfilename, "a");
        av_log_set_callback(http_av_log);
    }

    build_file_streams();

    build_feed_streams();

    compute_bandwidth();

    /* signal init */
    signal(SIGPIPE, SIG_IGN);

    if (http_server() < 0) {
        http_log("Could not start server\n");
        exit(1);
    }

    return 0;
}