ffserver: move configuration code to separate file

This commit doesn't change any existing logic.
It moves ffserver configuration related code to separate file.
It intends to make maintaining easier.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>

Makefile

@@ -32,6 +32,7 @@ OBJS-ffmpeg                   += ffmpeg_opt.o ffmpeg_filter.o
 OBJS-ffmpeg-$(HAVE_VDPAU_X11) += ffmpeg_vdpau.o
 OBJS-ffmpeg-$(HAVE_DXVA2_LIB) += ffmpeg_dxva2.o
 OBJS-ffmpeg-$(CONFIG_VDA)     += ffmpeg_vda.o
+OBJS-ffserver                 += ffserver_config.o
 
 TESTTOOLS   = audiogen videogen rotozoom tiny_psnr tiny_ssim base64
 HOSTPROGS  := $(TESTTOOLS:%=tests/%) doc/print_options

ffserver_config.c

@@ -0,0 +1,986 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/avstring.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/avassert.h"
+
+// FIXME those are internal headers, ffserver _really_ shouldn't use them
+#include "libavformat/ffm.h"
+
+#include "cmdutils.h"
+#include "ffserver_config.h"
+
+/* FIXME: make ffserver work with IPv6 */
+/* resolve host with also IP address parsing */
+static int resolve_host(struct in_addr *sin_addr, const char *hostname)
+{
+
+    if (!ff_inet_aton(hostname, sin_addr)) {
+#if HAVE_GETADDRINFO
+        struct addrinfo *ai, *cur;
+        struct addrinfo hints = { 0 };
+        hints.ai_family = AF_INET;
+        if (getaddrinfo(hostname, NULL, &hints, &ai))
+            return -1;
+        /* getaddrinfo returns a linked list of addrinfo structs.
+         * Even if we set ai_family = AF_INET above, make sure
+         * that the returned one actually is of the correct type. */
+        for (cur = ai; cur; cur = cur->ai_next) {
+            if (cur->ai_family == AF_INET) {
+                *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
+                freeaddrinfo(ai);
+                return 0;
+            }
+        }
+        freeaddrinfo(ai);
+        return -1;
+#else
+        struct hostent *hp;
+        hp = gethostbyname(hostname);
+        if (!hp)
+            return -1;
+        memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
+#endif
+    }
+    return 0;
+}
+
+void ffserver_get_arg(char *buf, int buf_size, const char **pp)
+{
+    const char *p;
+    char *q;
+    int quote;
+
+    p = *pp;
+    while (av_isspace(*p)) p++;
+    q = buf;
+    quote = 0;
+    if (*p == '\"' || *p == '\'')
+        quote = *p++;
+    for(;;) {
+        if (quote) {
+            if (*p == quote)
+                break;
+        } else {
+            if (av_isspace(*p))
+                break;
+        }
+        if (*p == '\0')
+            break;
+        if ((q - buf) < buf_size - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+    if (quote && *p == quote)
+        p++;
+    *pp = p;
+}
+
+void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,
+                            FFServerIPAddressACL *ext_acl,
+                            const char *p, const char *filename, int line_num)
+{
+    char arg[1024];
+    FFServerIPAddressACL acl;
+    int errors = 0;
+
+    ffserver_get_arg(arg, sizeof(arg), &p);
+    if (av_strcasecmp(arg, "allow") == 0)
+        acl.action = IP_ALLOW;
+    else if (av_strcasecmp(arg, "deny") == 0)
+        acl.action = IP_DENY;
+    else {
+        fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
+                filename, line_num, arg);
+        errors++;
+    }
+
+    ffserver_get_arg(arg, sizeof(arg), &p);
+
+    if (resolve_host(&acl.first, arg) != 0) {
+        fprintf(stderr, "%s:%d: ACL refers to invalid host or IP address '%s'\n",
+                filename, line_num, arg);
+        errors++;
+    } else
+        acl.last = acl.first;
+
+    ffserver_get_arg(arg, sizeof(arg), &p);
+
+    if (arg[0]) {
+        if (resolve_host(&acl.last, arg) != 0) {
+            fprintf(stderr, "%s:%d: ACL refers to invalid host or IP address '%s'\n",
+                    filename, line_num, arg);
+            errors++;
+        }
+    }
+
+    if (!errors) {
+        FFServerIPAddressACL *nacl = av_mallocz(sizeof(*nacl));
+        FFServerIPAddressACL **naclp = 0;
+
+        acl.next = 0;
+        *nacl = acl;
+
+        if (stream)
+            naclp = &stream->acl;
+        else if (feed)
+            naclp = &feed->acl;
+        else if (ext_acl)
+            naclp = &ext_acl;
+        else {
+            fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
+                    filename, line_num);
+            errors++;
+        }
+
+        if (naclp) {
+            while (*naclp)
+                naclp = &(*naclp)->next;
+
+            *naclp = nacl;
+        } else
+            av_free(nacl);
+    }
+}
+
+/* add a codec and set the default parameters */
+static void add_codec(FFServerStream *stream, AVCodecContext *av)
+{
+    AVStream *st;
+
+    if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams))
+        return;
+
+    /* compute default parameters */
+    switch(av->codec_type) {
+    case AVMEDIA_TYPE_AUDIO:
+        if (av->bit_rate == 0)
+            av->bit_rate = 64000;
+        if (av->sample_rate == 0)
+            av->sample_rate = 22050;
+        if (av->channels == 0)
+            av->channels = 1;
+        break;
+    case AVMEDIA_TYPE_VIDEO:
+        if (av->bit_rate == 0)
+            av->bit_rate = 64000;
+        if (av->time_base.num == 0){
+            av->time_base.den = 5;
+            av->time_base.num = 1;
+        }
+        if (av->width == 0 || av->height == 0) {
+            av->width = 160;
+            av->height = 128;
+        }
+        /* Bitrate tolerance is less for streaming */
+        if (av->bit_rate_tolerance == 0)
+            av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
+                      (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
+        if (av->qmin == 0)
+            av->qmin = 3;
+        if (av->qmax == 0)
+            av->qmax = 31;
+        if (av->max_qdiff == 0)
+            av->max_qdiff = 3;
+        av->qcompress = 0.5;
+        av->qblur = 0.5;
+
+        if (!av->nsse_weight)
+            av->nsse_weight = 8;
+
+        av->frame_skip_cmp = FF_CMP_DCTMAX;
+        if (!av->me_method)
+            av->me_method = ME_EPZS;
+        av->rc_buffer_aggressivity = 1.0;
+
+        if (!av->rc_eq)
+            av->rc_eq = av_strdup("tex^qComp");
+        if (!av->i_quant_factor)
+            av->i_quant_factor = -0.8;
+        if (!av->b_quant_factor)
+            av->b_quant_factor = 1.25;
+        if (!av->b_quant_offset)
+            av->b_quant_offset = 1.25;
+        if (!av->rc_max_rate)
+            av->rc_max_rate = av->bit_rate * 2;
+
+        if (av->rc_max_rate && !av->rc_buffer_size) {
+            av->rc_buffer_size = av->rc_max_rate;
+        }
+
+
+        break;
+    default:
+        abort();
+    }
+
+    st = av_mallocz(sizeof(AVStream));
+    if (!st)
+        return;
+    st->codec = avcodec_alloc_context3(NULL);
+    stream->streams[stream->nb_streams++] = st;
+    memcpy(st->codec, av, sizeof(AVCodecContext));
+}
+
+static enum AVCodecID opt_codec(const char *name, enum AVMediaType type)
+{
+    AVCodec *codec = avcodec_find_encoder_by_name(name);
+
+    if (!codec || codec->type != type)
+        return AV_CODEC_ID_NONE;
+    return codec->id;
+}
+
+static int ffserver_opt_default(const char *opt, const char *arg,
+                       AVCodecContext *avctx, int type)
+{
+    int ret = 0;
+    const AVOption *o = av_opt_find(avctx, opt, NULL, type, 0);
+    if(o)
+        ret = av_opt_set(avctx, opt, arg, 0);
+    return ret;
+}
+
+static int ffserver_opt_preset(const char *arg,
+                       AVCodecContext *avctx, int type,
+                       enum AVCodecID *audio_id, enum AVCodecID *video_id)
+{
+    FILE *f=NULL;
+    char filename[1000], tmp[1000], tmp2[1000], line[1000];
+    int ret = 0;
+    AVCodec *codec = avcodec_find_encoder(avctx->codec_id);
+
+    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)++;
+}
+
+int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config)
+{
+    FILE *f;
+    char line[1024];
+    char cmd[64];
+    char arg[1024], arg2[1024];
+    const char *p;
+    int val, errors, warnings, line_num;
+    FFServerStream **last_stream, *stream, *redirect;
+    FFServerStream **last_feed, *feed, *s;
+    AVCodecContext audio_enc, video_enc;
+    enum AVCodecID audio_id, video_id;
+    int ret = 0;
+
+    av_assert0(config);
+
+    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;
+    config->first_stream = NULL;
+    last_stream = &config->first_stream;
+    config->first_feed = NULL;
+    last_feed = &config->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;
+
+        ffserver_get_arg(cmd, sizeof(cmd), &p);
+
+        if (!av_strcasecmp(cmd, "Port") || !av_strcasecmp(cmd, "HTTPPort")) {
+            if (!av_strcasecmp(cmd, "Port"))
+                WARNING("Port option is deprecated, use HTTPPort instead\n");
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            val = atoi(arg);
+            if (val < 1 || val > 65536) {
+                ERROR("Invalid port: %s\n", arg);
+            }
+            if (val < 1024)
+                WARNING("Trying to use IETF assigned system port: %d\n", val);
+            config->http_addr.sin_port = htons(val);
+        } else if (!av_strcasecmp(cmd, "HTTPBindAddress") || !av_strcasecmp(cmd, "BindAddress")) {
+            if (!av_strcasecmp(cmd, "BindAddress"))
+                WARNING("BindAddress option is deprecated, use HTTPBindAddress instead\n");
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (resolve_host(&config->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")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            val = atoi(arg);
+            if (val < 1 || val > 65536) {
+                ERROR("%s:%d: Invalid port: %s\n", arg);
+            }
+            config->rtsp_addr.sin_port = htons(atoi(arg));
+        } else if (!av_strcasecmp(cmd, "RTSPBindAddress")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (resolve_host(&config->rtsp_addr.sin_addr, arg) != 0) {
+                ERROR("Invalid host/IP address: %s\n", arg);
+            }
+        } else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            val = atoi(arg);
+            if (val < 1 || val > 65536) {
+                ERROR("Invalid MaxHTTPConnections: %s\n", arg);
+            }
+            config->nb_max_http_connections = val;
+        } else if (!av_strcasecmp(cmd, "MaxClients")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            val = atoi(arg);
+            if (val < 1 || val > config->nb_max_http_connections) {
+                ERROR("Invalid MaxClients: %s\n", arg);
+            } else {
+                config->nb_max_connections = val;
+            }
+        } else if (!av_strcasecmp(cmd, "MaxBandwidth")) {
+            int64_t llval;
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            llval = strtoll(arg, NULL, 10);
+            if (llval < 10 || llval > 10000000) {
+                ERROR("Invalid MaxBandwidth: %s\n", arg);
+            } else
+                config->max_bandwidth = llval;
+        } else if (!av_strcasecmp(cmd, "CustomLog")) {
+            if (!config->debug)
+                ffserver_get_arg(config->logfilename, sizeof(config->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(FFServerStream));
+                if (!feed) {
+                    ret = AVERROR(ENOMEM);
+                    goto end;
+                }
+                ffserver_get_arg(feed->filename, sizeof(feed->filename), &p);
+                q = strrchr(feed->filename, '>');
+                if (*q)
+                    *q = '\0';
+
+                for (s = config->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++) {
+                    ffserver_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",
+                                (config->http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :
+                                inet_ntoa(config->http_addr.sin_addr), ntohs(config->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) {
+                ffserver_get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
+                feed->readonly = !av_strcasecmp(cmd, "ReadOnlyFile");
+            } else if (stream) {
+                ffserver_get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
+            }
+        } else if (!av_strcasecmp(cmd, "Truncate")) {
+            if (feed) {
+                ffserver_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;
+
+                ffserver_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 {
+                FFServerStream *s;
+                stream = av_mallocz(sizeof(FFServerStream));
+                if (!stream) {
+                    ret = AVERROR(ENOMEM);
+                    goto end;
+                }
+                ffserver_get_arg(stream->filename, sizeof(stream->filename), &p);
+                q = strrchr(stream->filename, '>');
+                if (q)
+                    *q = '\0';
+
+                for (s = config->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")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                FFServerStream *sfeed;
+
+                sfeed = config->first_feed;
+                while (sfeed) {
+                    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")) {
+            ffserver_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 MJPEG */
+                    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")) {
+            ffserver_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) {
+                ffserver_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")) {
+            ffserver_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")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream)
+                stream->max_time = atof(arg) * 1000;
+        } else if (!av_strcasecmp(cmd, "AudioBitRate")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream)
+                audio_enc.bit_rate = lrintf(atof(arg) * 1000);
+        } else if (!av_strcasecmp(cmd, "AudioChannels")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream)
+                audio_enc.channels = atoi(arg);
+        } else if (!av_strcasecmp(cmd, "AudioSampleRate")) {
+            ffserver_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;
+
+                ffserver_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) {
+                ffserver_get_arg(arg, sizeof(arg), &p);
+                video_enc.debug = strtol(arg,0,0);
+            }
+        } else if (!av_strcasecmp(cmd, "Strict")) {
+            if (stream) {
+                ffserver_get_arg(arg, sizeof(arg), &p);
+                video_enc.strict_std_compliance = atoi(arg);
+            }
+        } else if (!av_strcasecmp(cmd, "VideoBufferSize")) {
+            if (stream) {
+                ffserver_get_arg(arg, sizeof(arg), &p);
+                video_enc.rc_buffer_size = atoi(arg) * 8*1024;
+            }
+        } else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) {
+            if (stream) {
+                ffserver_get_arg(arg, sizeof(arg), &p);
+                video_enc.bit_rate_tolerance = atoi(arg) * 1000;
+            }
+        } else if (!av_strcasecmp(cmd, "VideoBitRate")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                video_enc.bit_rate = atoi(arg) * 1000;
+            }
+        } else if (!av_strcasecmp(cmd, "VideoSize")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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;
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            ffserver_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;
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream)
+                video_enc.lumi_masking = atof(arg);
+        } else if (!av_strcasecmp(cmd, "DarkMask")) {
+            ffserver_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")) {
+            ffserver_parse_acl_row(stream, feed, NULL, p, filename, line_num);
+        } else if (!av_strcasecmp(cmd, "DynamicACL")) {
+            if (stream) {
+                ffserver_get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), &p);
+            }
+        } else if (!av_strcasecmp(cmd, "RTSPOption")) {
+            ffserver_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")) {
+            ffserver_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")) {
+            ffserver_get_arg(arg, sizeof(arg), &p);
+            if (stream)
+                stream->multicast_port = atoi(arg);
+        } else if (!av_strcasecmp(cmd, "MulticastTTL")) {
+            ffserver_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(FFServerStream));
+                if (!redirect) {
+                    ret = AVERROR(ENOMEM);
+                    goto end;
+                }
+                *last_stream = redirect;
+                last_stream = &redirect->next;
+
+                ffserver_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)
+                ffserver_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;
+}

ffserver_config.h

@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef FFSERVER_CONFIG_H
+#define FFSERVER_CONFIG_H
+
+#include "libavutil/dict.h"
+#include "libavformat/avformat.h"
+#include "libavformat/network.h"
+
+#define FFSERVER_MAX_STREAMS 20
+
+/* each generated stream is described here */
+enum FFServerStreamType {
+    STREAM_TYPE_LIVE,
+    STREAM_TYPE_STATUS,
+    STREAM_TYPE_REDIRECT,
+};
+
+enum FFServerIPAddressAction {
+    IP_ALLOW = 1,
+    IP_DENY,
+};
+
+typedef struct FFServerIPAddressACL {
+    struct FFServerIPAddressACL *next;
+    enum FFServerIPAddressAction action;
+    /* These are in host order */
+    struct in_addr first;
+    struct in_addr last;
+} FFServerIPAddressACL;
+
+/* description of each stream of the ffserver.conf file */
+typedef struct FFServerStream {
+    enum FFServerStreamType stream_type;
+    char filename[1024];          /* stream filename */
+    struct FFServerStream *feed;  /* feed we are using (can be null if coming from file) */
+    AVDictionary *in_opts;        /* input parameters */
+    AVDictionary *metadata;       /* metadata to set on the stream */
+    AVInputFormat *ifmt;          /* if non NULL, force input format */
+    AVOutputFormat *fmt;
+    FFServerIPAddressACL *acl;
+    char dynamic_acl[1024];
+    int nb_streams;
+    int prebuffer;                /* Number of milliseconds early to start */
+    int64_t max_time;             /* Number of milliseconds to run */
+    int send_on_key;
+    AVStream *streams[FFSERVER_MAX_STREAMS];
+    int feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */
+    char feed_filename[1024];     /* file name of the feed storage, or
+                                     input file name for a stream */
+    pid_t pid;                    /* Of ffmpeg process */
+    time_t pid_start;             /* Of ffmpeg process */
+    char **child_argv;
+    struct FFServerStream *next;
+    unsigned bandwidth;           /* bandwidth, in kbits/s */
+    /* RTSP options */
+    char *rtsp_option;
+    /* multicast specific */
+    int is_multicast;
+    struct in_addr multicast_ip;
+    int multicast_port;           /* first port used for multicast */
+    int multicast_ttl;
+    int loop;                     /* if true, send the stream in loops (only meaningful if file) */
+
+    /* feed specific */
+    int feed_opened;              /* true if someone is writing to the feed */
+    int is_feed;                  /* true if it is a feed */
+    int readonly;                 /* True if writing is prohibited to the file */
+    int truncate;                 /* True if feeder connection truncate the feed file */
+    int conns_served;
+    int64_t bytes_served;
+    int64_t feed_max_size;        /* maximum storage size, zero means unlimited */
+    int64_t feed_write_index;     /* current write position in feed (it wraps around) */
+    int64_t feed_size;            /* current size of feed */
+    struct FFServerStream *next_feed;
+} FFServerStream;
+
+typedef struct FFServerConfig {
+    char *filename;
+    FFServerStream *first_feed;   /* contains only feeds */
+    FFServerStream *first_stream; /* contains all streams, including feeds */
+    unsigned int nb_max_http_connections;
+    unsigned int nb_max_connections;
+    uint64_t max_bandwidth;
+    int debug;
+    char logfilename[1024];
+    struct sockaddr_in http_addr;
+    struct sockaddr_in rtsp_addr;
+
+} FFServerConfig;
+
+void ffserver_get_arg(char *buf, int buf_size, const char **pp);
+
+void ffserver_parse_acl_row(FFServerStream *stream, FFServerStream* feed,
+                            FFServerIPAddressACL *ext_acl,
+                            const char *p, const char *filename, int line_num);
+
+int ffserver_parse_ffconfig(const char *filename, FFServerConfig *config);
+
+#endif /* FFSERVER_CONFIG_H */