Initial revision

Originally committed as revision 2 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 1642 insertions, 0 deletions

diff --git a/ffserver.c b/ffserver.c
new file mode 100644
index 0000000000..4bece8c455
--- /dev/null
+++ b/ffserver.c
@@ -0,0 +1,1642 @@
+/*
+ * Multiple format streaming server
+ * Copyright (c) 2000 Gerard Lantau.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <linux/videodev.h>
+#include <linux/soundcard.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <getopt.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <ctype.h>
+#include <pthread.h>
+
+#include "mpegenc.h"
+
+/* maximum number of simultaneous HTTP connections */
+#define HTTP_MAX_CONNECTIONS 2000
+
+enum HTTPState {
+    HTTPSTATE_WAIT_REQUEST,
+    HTTPSTATE_SEND_HEADER,
+    HTTPSTATE_SEND_DATA_HEADER,
+    HTTPSTATE_SEND_DATA,
+    HTTPSTATE_SEND_DATA_TRAILER,
+};
+
+enum MasterState {
+    MASTERSTATE_RECEIVE_HEADER,
+    MASTERSTATE_RECEIVE_DATA,
+};
+    
+#define IOBUFFER_MAX_SIZE 16384
+#define FIFO_MAX_SIZE (1024*1024)
+
+/* coef for exponential mean for bitrate estimation in statistics */
+#define AVG_COEF 0.9
+
+/* timeouts are in ms */
+#define REQUEST_TIMEOUT (15 * 1000)
+#define SYNC_TIMEOUT (10 * 1000)
+#define MASTER_CONNECT_TIMEOUT (10 * 1000)
+
+typedef struct HTTPContext {
+    enum HTTPState state;
+    int fd; /* socket file descriptor */
+    struct sockaddr_in from_addr; /* origin */
+    struct pollfd *poll_entry; /* used when polling */
+    long timeout;
+    UINT8 buffer[IOBUFFER_MAX_SIZE];
+    UINT8 *buffer_ptr, *buffer_end;
+    int http_error;
+    struct HTTPContext *next;
+    UINT8 *rptr; /* read pointer in the fifo */
+    int got_key_frame[2]; /* for each type */
+    long long data_count;
+    long long last_http_fifo_write_count; /* used to monitor overflow in the fifo */
+    /* format handling */
+    struct FFStream *stream;
+    AVFormatContext fmt_ctx;
+    int last_packet_sent; /* true if last data packet was sent */
+} HTTPContext;
+
+/* each generated stream is described here */
+enum StreamType {
+    STREAM_TYPE_LIVE,
+    STREAM_TYPE_MASTER,
+    STREAM_TYPE_STATUS,
+};
+
+typedef struct FFStream {
+    enum StreamType stream_type;
+    char filename[1024];
+    AVFormat *fmt;
+    AVEncodeContext *audio_enc;
+    AVEncodeContext *video_enc;
+    struct FFStream *next;
+} FFStream;
+
+typedef struct FifoBuffer {
+    UINT8 *buffer;
+    UINT8 *rptr, *wptr, *end;
+} FifoBuffer;
+
+/* each codec is here */
+typedef struct FFCodec {
+    struct FFCodec *next;
+    FifoBuffer fifo;     /* for compression: one audio fifo per codec */
+    ReSampleContext resample; /* for audio resampling */
+    long long data_count;
+    float avg_frame_size;   /* frame size averraged over last frames with exponential mean */
+    AVEncodeContext enc;
+} FFCodec;
+
+/* packet header */
+typedef struct {
+    UINT8 codec_type;
+    UINT8 codec_id;
+    UINT8 data[4];
+    UINT16 bit_rate;
+    UINT16 payload_size;
+} PacketHeader;
+
+struct sockaddr_in my_addr;
+char logfilename[1024];
+HTTPContext *first_http_ctx;
+FFStream *first_stream;
+FFCodec *first_codec;
+
+/* master state */
+char master_url[1024];
+enum MasterState master_state;
+UINT8 *master_wptr;
+int master_count;
+
+long long http_fifo_write_count;
+static FifoBuffer http_fifo;
+
+static int handle_http(HTTPContext *c, long cur_time);
+static int http_parse_request(HTTPContext *c);
+static int http_send_data(HTTPContext *c);
+static int master_receive(int fd);
+static void compute_stats(HTTPContext *c);
+
+int nb_max_connections;
+int nb_connections;
+
+/* fifo handling */
+int fifo_init(FifoBuffer *f, int size)
+{
+    f->buffer = malloc(size);
+    if (!f->buffer)
+        return -1;
+    f->end = f->buffer + size;
+    f->wptr = f->rptr = f->buffer;
+    return 0;
+}
+
+static int fifo_size(FifoBuffer *f, UINT8 *rptr)
+{
+    int size;
+
+    if (f->wptr >= rptr) {
+        size = f->wptr - rptr;
+    } else {
+        size = (f->end - rptr) + (f->wptr - f->buffer);
+    }
+    return size;
+}
+
+/* get data from the fifo (return -1 if not enough data) */
+static int fifo_read(FifoBuffer *f, UINT8 *buf, int buf_size, UINT8 **rptr_ptr)
+{
+    UINT8 *rptr = *rptr_ptr;
+    int size, len;
+
+    if (f->wptr >= rptr) {
+        size = f->wptr - rptr;
+    } else {
+        size = (f->end - rptr) + (f->wptr - f->buffer);
+    }
+    
+    if (size < buf_size)
+        return -1;
+    while (buf_size > 0) {
+        len = f->end - rptr;
+        if (len > buf_size)
+            len = buf_size;
+        memcpy(buf, rptr, len);
+        buf += len;
+        rptr += len;
+        if (rptr >= f->end)
+            rptr = f->buffer;
+        buf_size -= len;
+    }
+    *rptr_ptr = rptr;
+    return 0;
+}
+
+static void fifo_write(FifoBuffer *f, UINT8 *buf, int size, UINT8 **wptr_ptr)
+{
+    int len;
+    UINT8 *wptr;
+    wptr = *wptr_ptr;
+    while (size > 0) {
+        len = f->end - wptr;
+        if (len > size)
+            len = size;
+        memcpy(wptr, buf, len);
+        wptr += len;
+        if (wptr >= f->end)
+            wptr = f->buffer;
+        buf += len;
+        size -= len;
+    }
+    *wptr_ptr = wptr;
+}
+
+static long gettime_ms(void)
+{
+    struct timeval tv;
+
+    gettimeofday(&tv,NULL);
+    return (long long)tv.tv_sec * 1000 + (tv.tv_usec / 1000);
+}
+
+static FILE *logfile = NULL;
+
+static void http_log(char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    
+    if (logfile)
+        vfprintf(logfile, fmt, ap);
+    va_end(ap);
+}
+
+
+/* connect to url 'url' and return the connected socket ready to read data */
+static int url_get(const char *url)
+{
+    struct sockaddr_in dest_addr;
+    struct hostent *h;
+    int s, port, size, line_size, len;
+    char hostname[1024], *q;
+    const char *p, *path;
+    char req[1024];
+    unsigned char ch;
+
+    if (!strstart(url, "http://", &p))
+        return -1;
+    q = hostname;
+    while (*p != ':' && *p != '\0' && *p != '/') {
+        if ((q - hostname) < (sizeof(hostname) - 1))
+            *q++ = *p;
+        p++;
+    }
+    port = 80;
+    if (*p == ':') {
+        p++;
+        port = strtol(p, (char **)&p, 10);
+    }
+    path = p;
+        
+    dest_addr.sin_family = AF_INET;
+    dest_addr.sin_port = htons(port);
+
+    if (!inet_aton(hostname, &dest_addr.sin_addr)) {
+	if ((h = gethostbyname(hostname)) == NULL)
+	    return -1;
+	memcpy(&dest_addr.sin_addr, h->h_addr, sizeof(dest_addr.sin_addr));
+    }
+
+    s=socket(AF_INET, SOCK_STREAM, 0);
+    if (s < 0) 
+        return -1;
+
+    if (connect(s, (struct sockaddr *)&dest_addr, sizeof(dest_addr)) < 0) {
+    fail:
+	close(s);
+	return -1;
+    }
+    
+    /* send http request */
+    snprintf(req, sizeof(req), "GET %s HTTP/1.0\r\n\r\n", path);
+    p = req;
+    size = strlen(req);
+    while (size > 0) {
+        len = write(s, p, size);
+        if (len == -1) {
+            if (errno != EAGAIN && errno != EINTR)
+                goto fail;
+        } else {
+            size -= len;
+            p += len;
+        }
+    }
+    
+    /* receive answer */
+    line_size = 0;
+    for(;;) {
+        len = read(s, &ch, 1);
+        if (len == -1) {
+            if (errno != EAGAIN && errno != EINTR)
+                goto fail;
+        } else if (len == 0) {
+            goto fail;
+        } else {
+            if (ch == '\n') {
+                if (line_size == 0)
+                    break;
+                line_size = 0;
+            } else if (ch != '\r') {
+                line_size++;
+            }
+        }
+    }
+
+    return s;
+}
+
+/* Each request is served by reading the input FIFO and by adding the
+   right format headers */
+static int http_server(struct sockaddr_in my_addr)
+{
+    int server_fd, tmp, ret;
+    struct sockaddr_in from_addr;
+    struct pollfd poll_table[HTTP_MAX_CONNECTIONS + 1], *poll_entry;
+    HTTPContext *c, **cp;
+    long cur_time;
+    int master_fd, master_timeout;
+
+    /* will try to connect to master as soon as possible */
+    master_fd = -1;
+    master_timeout = gettime_ms();
+
+    server_fd = socket(AF_INET,SOCK_STREAM,0);
+    if (server_fd < 0) {
+        perror ("socket");
+        return -1;
+    }
+        
+    tmp = 1;
+    setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
+
+    if (bind (server_fd, (struct sockaddr *) &my_addr, sizeof (my_addr)) < 0) {
+        perror ("bind");
+        close(server_fd);
+        return -1;
+    }
+  
+    if (listen (server_fd, 5) < 0) {
+        perror ("listen");
+        close(server_fd);
+        return -1;
+    }
+
+    http_log("ffserver started.\n");
+
+    fcntl(server_fd, F_SETFL, O_NONBLOCK);
+    first_http_ctx = NULL;
+    nb_connections = 0;
+    first_http_ctx = NULL;
+    for(;;) {
+        poll_entry = poll_table;
+        poll_entry->fd = server_fd;
+        poll_entry->events = POLLIN;
+        poll_entry++;
+
+        if (master_fd >= 0) {
+            poll_entry->fd = master_fd;
+            poll_entry->events = POLLIN;
+            poll_entry++;
+        }
+
+        /* wait for events on each HTTP handle */
+        c = first_http_ctx;
+        while (c != NULL) {
+            int fd;
+            fd = c->fd;
+            switch(c->state) {
+            case HTTPSTATE_WAIT_REQUEST:
+                c->poll_entry = poll_entry;
+                poll_entry->fd = fd;
+                poll_entry->events = POLLIN;
+                poll_entry++;
+                break;
+            case HTTPSTATE_SEND_HEADER:
+            case HTTPSTATE_SEND_DATA_HEADER:
+            case HTTPSTATE_SEND_DATA:
+            case HTTPSTATE_SEND_DATA_TRAILER:
+                c->poll_entry = poll_entry;
+                poll_entry->fd = fd;
+                poll_entry->events = POLLOUT;
+                poll_entry++;
+                break;
+            default:
+                c->poll_entry = NULL;
+                break;
+            }
+            c = c->next;
+        }
+
+        /* wait for an event on one connection. We poll at least every
+           second to handle timeouts */
+        do {
+            ret = poll(poll_table, poll_entry - poll_table, 1000);
+        } while (ret == -1);
+        
+        cur_time = gettime_ms();
+
+        /* now handle the events */
+
+        cp = &first_http_ctx;
+        while ((*cp) != NULL) {
+            c = *cp;
+            if (handle_http (c, cur_time) < 0) {
+                /* close and free the connection */
+                close(c->fd);
+                *cp = c->next;
+                free(c);
+                nb_connections--;
+            } else {
+                cp = &c->next;
+            }
+        }
+
+        /* new connection request ? */
+        poll_entry = poll_table;
+        if (poll_entry->revents & POLLIN) {
+            int fd, len;
+
+            len = sizeof(from_addr);
+            fd = accept(server_fd, &from_addr, &len);
+            if (fd >= 0) {
+                fcntl(fd, F_SETFL, O_NONBLOCK);
+                /* XXX: should output a warning page when comming
+                   close to the connection limit */
+                if (nb_connections >= nb_max_connections) {
+                    close(fd);
+                } else {
+                    /* add a new connection */
+                    c = malloc(sizeof(HTTPContext));
+                    memset(c, 0, sizeof(*c));
+                    c->next = first_http_ctx;
+                    first_http_ctx = c;
+                    c->fd = fd;
+                    c->poll_entry = NULL;
+                    c->from_addr = from_addr;
+                    c->state = HTTPSTATE_WAIT_REQUEST;
+                    c->buffer_ptr = c->buffer;
+                    c->buffer_end = c->buffer + IOBUFFER_MAX_SIZE;
+                    c->timeout = cur_time + REQUEST_TIMEOUT;
+                    nb_connections++;
+                }
+            }
+        }
+        poll_entry++;
+
+        /* master events */
+        if (poll_entry->revents & POLLIN) {
+            if (master_receive(master_fd) < 0) {
+                close(master_fd);
+                master_fd = -1;
+            }
+        }
+
+        /* master (re)connection handling */
+        if (master_url[0] != '\0' && 
+            master_fd < 0 && (master_timeout - cur_time) <= 0) {
+            master_fd = url_get(master_url);
+            if (master_fd < 0) {
+                master_timeout = gettime_ms() + MASTER_CONNECT_TIMEOUT;
+                http_log("Connection to master: '%s' failed\n", master_url);
+            } else {
+                fcntl(master_fd, F_SETFL, O_NONBLOCK);
+                master_state = MASTERSTATE_RECEIVE_HEADER;
+                master_count = sizeof(PacketHeader);
+                master_wptr = http_fifo.wptr;
+            }
+        }
+    }
+}
+
+static int handle_http(HTTPContext *c, long cur_time)
+{
+    int len;
+    
+    switch(c->state) {
+    case HTTPSTATE_WAIT_REQUEST:
+        /* timeout ? */
+        if ((c->timeout - cur_time) < 0)
+            return -1;
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            return -1;
+
+        /* no need to read if no events */
+        if (!(c->poll_entry->revents & POLLIN))
+            return 0;
+        /* read the data */
+        len = read(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr);
+        if (len < 0) {
+            if (errno != EAGAIN && errno != EINTR)
+                return -1;
+        } else if (len == 0) {
+            return -1;
+        } else {
+            /* search for end of request. XXX: not fully correct since garbage could come after the end */
+            UINT8 *ptr;
+            c->buffer_ptr += len;
+            ptr = c->buffer_ptr;
+            if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
+                (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
+                /* request found : parse it and reply */
+                if (http_parse_request(c) < 0)
+                    return -1;
+            } else if (ptr >= c->buffer_end) {
+                /* request too long: cannot do anything */
+                return -1;
+            }
+        }
+        break;
+
+    case HTTPSTATE_SEND_HEADER:
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            return -1;
+
+        /* no need to read if no events */
+        if (!(c->poll_entry->revents & POLLOUT))
+            return 0;
+        len = write(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr);
+        if (len < 0) {
+            if (errno != EAGAIN && errno != EINTR) {
+                /* error : close connection */
+                return -1;
+            }
+        } else {
+            c->buffer_ptr += len;
+            if (c->buffer_ptr >= c->buffer_end) {
+                /* if error, exit */
+                if (c->http_error)
+                    return -1;
+                /* all the buffer was send : synchronize to the incoming stream */
+                c->state = HTTPSTATE_SEND_DATA_HEADER;
+                c->buffer_ptr = c->buffer_end = c->buffer;
+            }
+        }
+        break;
+
+    case HTTPSTATE_SEND_DATA:
+    case HTTPSTATE_SEND_DATA_HEADER:
+    case HTTPSTATE_SEND_DATA_TRAILER:
+        /* no need to read if no events */
+        if (c->poll_entry->revents & (POLLERR | POLLHUP))
+            return -1;
+        
+        if (!(c->poll_entry->revents & POLLOUT))
+            return 0;
+        if (http_send_data(c) < 0)
+            return -1;
+        break;
+    default:
+        return -1;
+    }
+    return 0;
+}
+
+/* parse http request and prepare header */
+static int http_parse_request(HTTPContext *c)
+{
+    const char *p;
+    char cmd[32];
+    char url[1024], *q;
+    char protocol[32];
+    char msg[1024];
+    char *mime_type;
+    FFStream *stream;
+
+    p = c->buffer;
+    q = cmd;
+    while (!isspace(*p) && *p != '\0') {
+        if ((q - cmd) < sizeof(cmd) - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+    if (strcmp(cmd, "GET"))
+        return -1;
+
+    while (isspace(*p)) p++;
+    q = url;
+    while (!isspace(*p) && *p != '\0') {
+        if ((q - url) < sizeof(url) - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+
+    while (isspace(*p)) p++;
+    q = protocol;
+    while (!isspace(*p) && *p != '\0') {
+        if ((q - protocol) < sizeof(protocol) - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+    if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
+        return -1;
+    
+    /* find the filename in the request */
+    p = url;
+    if (*p == '/')
+        p++;
+
+    stream = first_stream;
+    while (stream != NULL) {
+        if (!strcmp(stream->filename, p))
+            break;
+        stream = stream->next;
+    }
+    if (stream == NULL) {
+        sprintf(msg, "File '%s' not found", url);
+        goto send_error;
+    }
+    c->stream = stream;
+    
+    /* should do it after so that the size can be computed */
+    {
+        char buf1[32], buf2[32], *p;
+        time_t ti;
+        /* XXX: reentrant function ? */
+        p = inet_ntoa(c->from_addr.sin_addr);
+        strcpy(buf1, p);
+        ti = time(NULL);
+        p = ctime(&ti);
+        strcpy(buf2, p);
+        p = buf2 + strlen(p) - 1;
+        if (*p == '\n')
+            *p = '\0';
+        http_log("%s - - [%s] \"%s %s %s\" %d %d\n", 
+                 buf1, buf2, cmd, url, protocol, 200, 1024);
+    }
+
+    if (c->stream->stream_type == STREAM_TYPE_STATUS)
+        goto send_stats;
+
+    /* prepare http header */
+    q = c->buffer;
+    q += sprintf(q, "HTTP/1.0 200 OK\r\n");
+    mime_type = c->stream->fmt->mime_type;
+    if (!mime_type)
+        mime_type = "application/x-octet_stream";
+    q += sprintf(q, "Content-type: %s\r\n", mime_type);
+    q += sprintf(q, "Pragma: no-cache\r\n");
+    /* for asf, we need extra headers */
+    if (!strcmp(c->stream->fmt->name,"asf")) {
+        q += sprintf(q, "Pragma: features=broadcast\r\n");
+    }
+    q += sprintf(q, "\r\n");
+
+    /* prepare output buffer */
+    c->http_error = 0;
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = q;
+    c->state = HTTPSTATE_SEND_HEADER;
+    return 0;
+ send_error:
+    c->http_error = 404;
+    q = c->buffer;
+    q += sprintf(q, "HTTP/1.0 404 Not Found\r\n");
+    q += sprintf(q, "Content-type: %s\r\n", "text/html");
+    q += sprintf(q, "\r\n");
+    q += sprintf(q, "<HTML>\n");
+    q += sprintf(q, "<HEAD><TITLE>404 Not Found</TITLE></HEAD>\n");
+    q += sprintf(q, "<BODY>%s</BODY>\n", msg);
+    q += sprintf(q, "</HTML>\n");
+
+    /* prepare output buffer */
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = q;
+    c->state = HTTPSTATE_SEND_HEADER;
+    return 0;
+ send_stats:
+    compute_stats(c);
+    c->http_error = 200; /* horrible : we use this value to avoid
+                            going to the send data state */
+    c->state = HTTPSTATE_SEND_HEADER;
+    return 0;
+}
+
+static void compute_stats(HTTPContext *c)
+{
+    AVEncodeContext *enc;
+    HTTPContext *c1;
+    FFCodec *ffenc;
+    FFStream *stream;
+    float avg;
+    char buf[1024], *q, *p;
+    time_t ti;
+    int i;
+
+    q = c->buffer;
+    q += sprintf(q, "HTTP/1.0 200 OK\r\n");
+    q += sprintf(q, "Content-type: %s\r\n", "text/html");
+    q += sprintf(q, "Pragma: no-cache\r\n");
+    q += sprintf(q, "\r\n");
+    
+    q += sprintf(q, "<HEAD><TITLE>FFServer Status</TITLE></HEAD>\n<BODY>");
+    q += sprintf(q, "<H1>FFServer Status</H1>\n");
+    /* format status */
+    q += sprintf(q, "<H1>Available Streams</H1>\n");
+    q += sprintf(q, "<TABLE>\n");
+    q += sprintf(q, "<TR><TD>Path<TD>Format<TD>Bit rate (kbits/s)<TD>Video<TD>Audio\n");
+    stream = first_stream;
+    while (stream != NULL) {
+        q += sprintf(q, "<TR><TD><A HREF=\"/%s\">%s</A> ", 
+                     stream->filename, stream->filename);
+        switch(stream->stream_type) {
+        case STREAM_TYPE_LIVE:
+            {
+                int audio_bit_rate = 0;
+                int video_bit_rate = 0;
+                if (stream->audio_enc)
+                    audio_bit_rate = stream->audio_enc->bit_rate;
+                if (stream->video_enc)
+                    video_bit_rate = stream->video_enc->bit_rate;
+                
+                q += sprintf(q, "<TD> %s <TD> %d <TD> %d <TD> %d\n", 
+                             stream->fmt->name,
+                             (audio_bit_rate + video_bit_rate) / 1000,
+                             video_bit_rate / 1000, audio_bit_rate / 1000);
+            }
+            break;
+        case STREAM_TYPE_MASTER:
+            q += sprintf(q, "<TD> %s <TD> - <TD> - <TD> -\n",
+                         "master");
+            break;
+        default:
+            q += sprintf(q, "<TD> - <TD> - <TD> - <TD> -\n");
+            break;
+        }
+        stream = stream->next;
+    }
+    q += sprintf(q, "</TABLE>\n");
+    
+    /* codec status */
+    q += sprintf(q, "<H1>Codec Status</H1>\n");
+    q += sprintf(q, "<TABLE>\n");
+    q += sprintf(q, "<TR><TD>Parameters<TD>Frame count<TD>Size<TD>Avg bitrate (kbits/s)\n");
+    ffenc = first_codec;
+    while (ffenc != NULL) {
+        enc = &ffenc->enc;
+        avencoder_string(buf, sizeof(buf), enc);
+        avg = ffenc->avg_frame_size * (float)enc->rate * 8.0;
+        if (enc->codec->type == CODEC_TYPE_AUDIO && enc->frame_size > 0)
+            avg /= enc->frame_size;
+        q += sprintf(q, "<TR><TD>%s <TD> %d <TD> %Ld <TD> %0.1f\n", 
+                     buf, enc->frame_number, ffenc->data_count, avg / 1000.0);
+        ffenc = ffenc->next;
+    }
+    q += sprintf(q, "</TABLE>\n");
+
+    /* exclude the stat connection */
+    q += sprintf(q, "Number of connections: %d / %d<BR>\n",
+                 nb_connections, nb_max_connections);
+
+    /* connection status */
+    q += sprintf(q, "<H1>Connection Status</H1>\n");
+    q += sprintf(q, "<TABLE>\n");
+    q += sprintf(q, "<TR><TD>#<TD>File<TD>IP<TD>Size\n");
+    c1 = first_http_ctx;
+    i = 0;
+    while (c1 != NULL) {
+        i++;
+        p = inet_ntoa(c1->from_addr.sin_addr);
+        q += sprintf(q, "<TR><TD><B>%d</B><TD>%s <TD> %s <TD> %Ld\n", 
+                     i, c1->stream->filename, p, c1->data_count);
+        c1 = c1->next;
+    }
+    q += sprintf(q, "</TABLE>\n");
+    
+    /* date */
+    ti = time(NULL);
+    p = ctime(&ti);
+    q += sprintf(q, "<HR>Generated at %s", p);
+    q += sprintf(q, "</BODY>\n</HTML>\n");
+
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = q;
+}
+
+
+static void http_write_packet(void *opaque, 
+                              unsigned char *buf, int size)
+{
+    HTTPContext *c = opaque;
+    if (size > IOBUFFER_MAX_SIZE)
+        abort();
+    memcpy(c->buffer, buf, size);
+    c->buffer_ptr = c->buffer;
+    c->buffer_end = c->buffer + size;
+}
+
+/* this headers are used to identify a packet for a given codec */
+void mk_header(PacketHeader *h, AVEncodeContext *c, int payload_size)
+{
+    h->codec_type = c->codec->type;
+    h->codec_id = c->codec->id;
+    h->bit_rate = htons(c->bit_rate / 1000);
+    switch(c->codec->type) {
+    case CODEC_TYPE_VIDEO:
+        h->data[0] = c->rate;
+        h->data[1] = c->width / 16;
+        h->data[2] = c->height / 16;
+        break;
+    case CODEC_TYPE_AUDIO:
+        h->data[0] = c->rate / 1000;
+        h->data[1] = c->channels;
+        h->data[2] = 0;
+        break;
+    }
+    h->data[3] = c->key_frame;
+    h->payload_size = htons(payload_size);
+}
+
+int test_header(PacketHeader *h, AVEncodeContext *c)
+{
+    if (!c)
+        return 0;
+
+    if (h->codec_type == c->codec->type &&
+        h->codec_id == c->codec->id &&
+        h->bit_rate == htons(c->bit_rate / 1000)) {
+
+        switch(c->codec->type) {
+        case CODEC_TYPE_VIDEO:
+            if (h->data[0] == c->rate &&
+                h->data[1] == (c->width / 16) &&
+                h->data[2] == (c->height / 16))
+                goto found;
+            break;
+        case CODEC_TYPE_AUDIO:
+            if (h->data[0] == (c->rate / 1000) &&
+                (h->data[1] == c->channels))
+                goto found;
+            break;
+        }
+    }
+    return 0;
+ found:
+    c->frame_number++;
+    c->key_frame = h->data[3];
+    return 1;
+}
+
+static int http_prepare_data(HTTPContext *c)
+{
+    PacketHeader hdr;
+    UINT8 *start_rptr, *payload;
+    int payload_size, ret;
+    long long fifo_total_size;
+
+    switch(c->state) {
+    case HTTPSTATE_SEND_DATA_HEADER:
+        if (c->stream->stream_type != STREAM_TYPE_MASTER) {            
+            memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
+            c->fmt_ctx.format = c->stream->fmt;
+            if (c->fmt_ctx.format->audio_codec != CODEC_ID_NONE) {
+                /* create a fake new codec instance */
+                c->fmt_ctx.audio_enc = malloc(sizeof(AVEncodeContext));
+                memcpy(c->fmt_ctx.audio_enc, c->stream->audio_enc, 
+                       sizeof(AVEncodeContext));
+                c->fmt_ctx.audio_enc->frame_number = 0;
+            }
+            if (c->fmt_ctx.format->video_codec != CODEC_ID_NONE) {
+                c->fmt_ctx.video_enc = malloc(sizeof(AVEncodeContext));
+                memcpy(c->fmt_ctx.video_enc, c->stream->video_enc, 
+                       sizeof(AVEncodeContext));
+                c->fmt_ctx.video_enc->frame_number = 0;
+            }
+            init_put_byte(&c->fmt_ctx.pb, c->buffer, IOBUFFER_MAX_SIZE,
+                          c, http_write_packet, NULL);
+            c->fmt_ctx.is_streamed = 1;
+            c->got_key_frame[0] = 0;
+            c->got_key_frame[1] = 0;
+            /* prepare header */
+            c->fmt_ctx.format->write_header(&c->fmt_ctx);
+        }
+        c->state = HTTPSTATE_SEND_DATA;
+        c->last_packet_sent = 0;
+        c->rptr = http_fifo.wptr;
+        c->last_http_fifo_write_count = http_fifo_write_count;
+        break;
+    case HTTPSTATE_SEND_DATA:
+        /* find a new packet */
+        fifo_total_size = http_fifo_write_count - c->last_http_fifo_write_count;
+        if (fifo_total_size >= ((3 * FIFO_MAX_SIZE) / 4)) {
+            /* overflow : resync. We suppose that wptr is at this
+               point a pointer to a valid packet */
+            c->rptr = http_fifo.wptr;
+            c->got_key_frame[0] = 0;
+            c->got_key_frame[1] = 0;
+        }
+        
+        start_rptr = c->rptr;
+        if (fifo_read(&http_fifo, (UINT8 *)&hdr, sizeof(hdr), &c->rptr) < 0)
+            return 0;
+        payload_size = ntohs(hdr.payload_size);
+        payload = malloc(payload_size);
+        if (fifo_read(&http_fifo, payload, payload_size, &c->rptr) < 0) {
+            /* cannot read all the payload */
+            free(payload);
+            c->rptr = start_rptr;
+            return 0;
+        }
+        
+        c->last_http_fifo_write_count = http_fifo_write_count - 
+            fifo_size(&http_fifo, c->rptr);
+        
+        if (c->stream->stream_type != STREAM_TYPE_MASTER) {
+            /* test if the packet can be handled by this format */
+            ret = 0;
+            if (test_header(&hdr, c->fmt_ctx.audio_enc)) {
+                /* only begin sending when got a key frame */
+                if (c->fmt_ctx.audio_enc->key_frame)
+                    c->got_key_frame[1] = 1;
+                if (c->got_key_frame[1]) {
+                    ret = c->fmt_ctx.format->write_audio_frame(&c->fmt_ctx, 
+                                                               payload, payload_size);
+                }
+            } else if (test_header(&hdr, c->fmt_ctx.video_enc)) {
+                if (c->fmt_ctx.video_enc->key_frame)
+                    c->got_key_frame[0] = 1;
+                if (c->got_key_frame[0]) {
+                    ret = c->fmt_ctx.format->write_video_picture(&c->fmt_ctx, 
+                                                                 payload, payload_size);
+                }
+            }
+            if (ret) {
+                /* must send trailer now */
+                c->state = HTTPSTATE_SEND_DATA_TRAILER;
+            }
+        } else {
+            /* master case : send everything */
+            char *q;
+            q = c->buffer;
+            memcpy(q, &hdr, sizeof(hdr));
+            q += sizeof(hdr);
+            memcpy(q, payload, payload_size);
+            q += payload_size;
+            c->buffer_ptr = c->buffer;
+            c->buffer_end = q;
+        }
+        free(payload);
+        break;
+    default:
+    case HTTPSTATE_SEND_DATA_TRAILER:
+        /* last packet test ? */
+        if (c->last_packet_sent)
+            return -1;
+        /* prepare header */
+        c->fmt_ctx.format->write_trailer(&c->fmt_ctx);
+        c->last_packet_sent = 1;
+        break;
+    }
+    return 0;
+}
+
+
+/* should convert the format at the same time */
+static int http_send_data(HTTPContext *c)
+{
+    int len;
+
+    while (c->buffer_ptr >= c->buffer_end) {
+        if (http_prepare_data(c) < 0)
+            return -1;
+    }
+
+    len = write(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr);
+    if (len < 0) {
+        if (errno != EAGAIN && errno != EINTR) {
+            /* error : close connection */
+            return -1;
+        }
+    } else {
+        c->buffer_ptr += len;
+        c->data_count += len;
+    }
+    return 0;
+}
+
+static int master_receive(int fd)
+{
+    int len, size;
+    FifoBuffer *f = &http_fifo;
+    UINT8 *rptr;
+
+    size = f->end - f->wptr;
+    if (size > master_count)
+        size = master_count;
+    len = read(fd, f->wptr, size);
+    if (len == -1) {
+        if (errno != EAGAIN && errno != EINTR) 
+            return -1;
+    } else if (len == 0) {
+        return -1;
+    } else {
+        master_wptr += len;
+        if (master_wptr >= f->end)
+            master_wptr = f->buffer;
+        master_count -= len;
+        if (master_count == 0) {
+            if (master_state == MASTERSTATE_RECEIVE_HEADER) {
+                /* XXX: use generic fifo read to extract packet header */
+                rptr = master_wptr;
+                if (rptr == f->buffer)
+                    rptr = f->end - 1;
+                else
+                    rptr--;
+                master_count = *rptr;
+                if (rptr == f->buffer)
+                    rptr = f->end - 1;
+                else
+                    rptr--;
+                master_count |= *rptr << 8;
+                master_state = MASTERSTATE_RECEIVE_DATA;
+            } else {
+                /* update fifo wptr */
+                f->wptr = master_wptr;
+                master_state = MASTERSTATE_RECEIVE_HEADER;
+            }
+        }
+    }
+    return 0;
+}
+
+static void get_arg(char *buf, int buf_size, const char **pp)
+{
+    const char *p;
+    char *q;
+
+    p = *pp;
+    while (isspace(*p)) p++;
+    q = buf;
+    while (!isspace(*p) && *p != '\0') {
+        if ((q - buf) < buf_size - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+    *pp = p;
+}
+
+/* add a codec and check if it does not already exists */
+AVEncodeContext *add_codec(int codec_id,
+                           AVEncodeContext *av)
+{
+    AVEncoder *codec;
+    FFCodec *ctx, **pctx;
+    AVEncodeContext *av1;
+
+    codec = avencoder_find(codec_id);
+    if (!codec)
+        return NULL;
+
+    /* compute default parameters */
+    av->codec = codec;
+    switch(codec->type) {
+    case CODEC_TYPE_AUDIO:
+        if (av->bit_rate == 0)
+            av->bit_rate = 64000;
+        if (av->rate == 0)
+            av->rate = 22050;
+        if (av->channels == 0)
+            av->channels = 1;
+        break;
+    case CODEC_TYPE_VIDEO:
+        if (av->bit_rate == 0)
+            av->bit_rate = 64000;
+        if (av->rate == 0)
+            av->rate = 5;
+        if (av->width == 0 || av->height == 0) {
+            av->width = 160;
+            av->height = 128;
+        }
+        break;
+    }
+
+    /* find if the codec already exists */
+    pctx = &first_codec;
+    while (*pctx != NULL) {
+        av1 = &(*pctx)->enc;
+        if (av1->codec == av->codec &&
+            av1->bit_rate == av->bit_rate &&
+            av1->rate == av->rate) {
+
+            switch(av->codec->type) {
+            case CODEC_TYPE_AUDIO:
+                if (av1->channels == av->channels)
+                    goto found;
+                break;
+            case CODEC_TYPE_VIDEO:
+                if (av1->width == av->width &&
+                    av1->height == av->height &&
+                    av1->gop_size == av->gop_size)
+                    goto found;
+                break;
+            }
+        }
+        pctx = &(*pctx)->next;
+    }
+
+    ctx = malloc(sizeof(FFCodec));
+    if (!ctx)
+        return NULL;
+    memset(ctx, 0, sizeof(FFCodec));
+    *pctx = ctx;
+    
+    memcpy(&ctx->enc, av, sizeof(AVEncodeContext));
+    return &ctx->enc;
+ found:
+    ctx = *pctx;
+    return &ctx->enc;
+}
+
+int parse_ffconfig(const char *filename)
+{
+    FILE *f;
+    char line[1024];
+    char cmd[64];
+    char arg[1024];
+    const char *p;
+    int val, errors, line_num;
+    FFStream **last_stream, *stream;
+    AVEncodeContext audio_enc, video_enc;
+
+    f = fopen(filename, "r");
+    if (!f) {
+        perror(filename);
+        return -1;
+    }
+    
+    errors = 0;
+    line_num = 0;
+    first_stream = NULL;
+    first_codec = NULL;
+    last_stream = &first_stream;
+    stream = NULL;
+    for(;;) {
+        if (fgets(line, sizeof(line), f) == NULL)
+            break;
+        line_num++;
+        p = line;
+        while (isspace(*p)) 
+            p++;
+        if (*p == '\0' || *p == '#')
+            continue;
+
+        get_arg(cmd, sizeof(cmd), &p);
+        
+        if (!strcasecmp(cmd, "Port")) {
+            get_arg(arg, sizeof(arg), &p);
+            my_addr.sin_port = htons (atoi(arg));
+        } else if (!strcasecmp(cmd, "BindAddress")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (!inet_aton(arg, &my_addr.sin_addr)) {
+                fprintf(stderr, "%s:%d: Invalid IP address: %s\n", 
+                        filename, line_num, arg);
+                errors++;
+            }
+        } else if (!strcasecmp(cmd, "MasterServer")) {
+            get_arg(master_url, sizeof(master_url), &p);
+            if (!strstart(master_url, "http://", NULL)) {
+                fprintf(stderr, "%s:%d: Invalid URL for master server: %s\n", 
+                        filename, line_num, master_url);
+                errors++;
+            }
+        } else if (!strcasecmp(cmd, "MaxClients")) {
+            get_arg(arg, sizeof(arg), &p);
+            val = atoi(arg);
+            if (val < 1 || val > HTTP_MAX_CONNECTIONS) {
+                fprintf(stderr, "%s:%d: Invalid MaxClients: %s\n", 
+                        filename, line_num, arg);
+                errors++;
+            } else {
+                nb_max_connections = val;
+            }
+        } else if (!strcasecmp(cmd, "CustomLog")) {
+            get_arg(logfilename, sizeof(logfilename), &p);
+        } else if (!strcasecmp(cmd, "<Stream")) {
+            char *q;
+            if (stream) {
+                fprintf(stderr, "%s:%d: Already in a stream tag\n",
+                        filename, line_num);
+            } else {
+                stream = malloc(sizeof(FFStream));
+                memset(stream, 0, sizeof(FFStream));
+                *last_stream = stream;
+                last_stream = &stream->next;
+
+                get_arg(stream->filename, sizeof(stream->filename), &p);
+                q = strrchr(stream->filename, '>');
+                if (*q)
+                    *q = '\0';
+                stream->fmt = guess_format(NULL, stream->filename, NULL);
+                memset(&audio_enc, 0, sizeof(AVEncodeContext));
+                memset(&video_enc, 0, sizeof(AVEncodeContext));
+            }
+        } else if (!strcasecmp(cmd, "Format")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (!strcmp(arg, "master")) {
+                stream->stream_type = STREAM_TYPE_MASTER;
+                stream->fmt = NULL;
+            } else if (!strcmp(arg, "status")) {
+                stream->stream_type = STREAM_TYPE_STATUS;
+                stream->fmt = NULL;
+            } else {
+                stream->stream_type = STREAM_TYPE_LIVE;
+                stream->fmt = guess_format(arg, NULL, NULL);
+                if (!stream->fmt) {
+                    fprintf(stderr, "%s:%d: Unknown Format: %s\n", 
+                            filename, line_num, arg);
+                    errors++;
+                }
+            }
+        } else if (!strcasecmp(cmd, "AudioBitRate")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                audio_enc.bit_rate = atoi(arg) * 1000;
+            }
+        } else if (!strcasecmp(cmd, "AudioChannels")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                audio_enc.channels = atoi(arg);
+            }
+        } else if (!strcasecmp(cmd, "AudioSampleRate")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                audio_enc.rate = atoi(arg);
+            }
+        } else if (!strcasecmp(cmd, "VideoBitRate")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                video_enc.bit_rate = atoi(arg) * 1000;
+            }
+        } else if (!strcasecmp(cmd, "VideoFrameRate")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                video_enc.rate = atoi(arg);
+            }
+        } else if (!strcasecmp(cmd, "VideoGopSize")) {
+            get_arg(arg, sizeof(arg), &p);
+            if (stream) {
+                video_enc.gop_size = atoi(arg);
+            }
+        } else if (!strcasecmp(cmd, "VideoIntraOnly")) {
+            if (stream) {
+                video_enc.gop_size = 1;
+            }
+        } else if (!strcasecmp(cmd, "</Stream>")) {
+            if (!stream) {
+                fprintf(stderr, "%s:%d: No corresponding <Stream> for </Stream>\n",
+                        filename, line_num);
+                errors++;
+            }
+            if (stream->fmt) {
+                if (stream->fmt->audio_codec != CODEC_ID_NONE) {
+                    stream->audio_enc = add_codec(stream->fmt->audio_codec,
+                                                  &audio_enc);
+                }
+                
+                if (stream->fmt->video_codec != CODEC_ID_NONE)
+                    stream->video_enc = add_codec(stream->fmt->video_codec,
+                                                  &video_enc);
+            }
+            stream = NULL;
+        } else {
+            fprintf(stderr, "%s:%d: Incorrect keyword: '%s'\n", 
+                    filename, line_num, cmd);
+            errors++;
+        }
+    }
+
+    fclose(f);
+    if (errors)
+        return -1;
+    else
+        return 0;
+}
+
+
+void *http_server_thread(void *arg)
+{
+    http_server(my_addr);
+    return NULL;
+}
+
+static void write_packet(FFCodec *ffenc,
+                         UINT8 *buf, int size)
+{
+    PacketHeader hdr;
+    AVEncodeContext *enc = &ffenc->enc;
+    UINT8 *wptr;
+    mk_header(&hdr, enc, size);
+    wptr = http_fifo.wptr;
+    fifo_write(&http_fifo, (UINT8 *)&hdr, sizeof(hdr), &wptr);
+    fifo_write(&http_fifo, buf, size, &wptr);
+    /* atomic modification of wptr */
+    http_fifo.wptr = wptr;
+    ffenc->data_count += size;
+    ffenc->avg_frame_size = ffenc->avg_frame_size * AVG_COEF + size * (1.0 - AVG_COEF);
+}
+
+#define AUDIO_FIFO_SIZE 8192
+
+int av_grab(void)
+{
+    UINT8 audio_buf[AUDIO_FIFO_SIZE/2];
+    UINT8 audio_buf1[AUDIO_FIFO_SIZE/2];
+    UINT8 audio_out[AUDIO_FIFO_SIZE/2];
+    UINT8 video_buffer[128*1024];
+    char buf[256];
+    short *samples;
+    int ret;
+    int audio_fd;
+    FFCodec *ffenc;
+    AVEncodeContext *enc;
+    int frame_size, frame_bytes;
+    int use_audio, use_video;
+    int frame_rate, sample_rate, channels;
+    int width, height, frame_number;
+    UINT8 *picture[3];
+
+    use_audio = 0;
+    use_video = 0;
+    frame_rate = 0;
+    sample_rate = 0;
+    frame_size = 0;
+    channels = 1;
+    width = 0;
+    height = 0;
+    frame_number = 0;
+    ffenc = first_codec;
+    while (ffenc != NULL) {
+        enc = &ffenc->enc;
+        avencoder_string(buf, sizeof(buf), enc);
+        fprintf(stderr, "  %s\n", buf);
+        if (avencoder_open(enc, enc->codec) < 0) {
+            fprintf(stderr, "Incorrect encode parameters\n");
+            return -1;
+        }
+        switch(enc->codec->type) {
+        case CODEC_TYPE_AUDIO:
+            use_audio = 1;
+            if (enc->rate > sample_rate)
+                sample_rate = enc->rate;
+            if (enc->frame_size > frame_size)
+                frame_size = enc->frame_size;
+            if (enc->channels > channels)
+                channels = enc->channels;
+            fifo_init(&ffenc->fifo, AUDIO_FIFO_SIZE);
+            break;
+        case CODEC_TYPE_VIDEO:
+            use_video = 1;
+            if (enc->rate > frame_rate)
+                frame_rate = enc->rate;
+            if (enc->width > width)
+                width = enc->width;
+            if (enc->height > height)
+                height = enc->height;
+            break;
+        }
+        ffenc = ffenc->next;
+    }
+
+    /* audio */
+    samples = NULL;
+    audio_fd = -1;
+    if (use_audio) {
+        printf("Audio sampling: %d Hz, %s\n", 
+               sample_rate, channels == 2 ? "stereo" : "mono");
+        audio_fd = audio_open(sample_rate, channels);
+        if (audio_fd < 0) {
+            fprintf(stderr, "Could not open audio device\n");
+            exit(1);
+        }
+    }
+    
+    ffenc = first_codec;
+    while (ffenc != NULL) {
+        enc = &ffenc->enc;
+        if (enc->codec->type == CODEC_TYPE_AUDIO &&
+            (enc->channels != channels ||
+             enc->rate != sample_rate)) {
+            audio_resample_init(&ffenc->resample, enc->channels, channels,
+                                enc->rate, sample_rate);
+        }
+        ffenc = ffenc->next;
+    }
+
+    /* video */
+    if (use_video) {
+        printf("Video sampling: %dx%d, %d fps\n", 
+               width, height, frame_rate);
+        ret = v4l_init(frame_rate, width, height);
+        if (ret < 0) {
+            fprintf(stderr,"Could not init video 4 linux capture\n");
+            exit(1);
+        }
+    }
+
+    for(;;) {
+        /* read & compress audio frames */
+        if (use_audio) {
+            int ret, nb_samples, nb_samples_out;
+            UINT8 *buftmp;
+
+            for(;;) {
+                ret = read(audio_fd, audio_buf, AUDIO_FIFO_SIZE/2);
+                if (ret <= 0)
+                    break;
+                /* fill each codec fifo by doing the right sample
+                   rate conversion. This is not optimal because we
+                   do too much work, but it is easy to do */
+                nb_samples = ret / (channels * 2);
+                ffenc = first_codec;
+                while (ffenc != NULL) {
+                    enc = &ffenc->enc;
+                    if (enc->codec->type == CODEC_TYPE_AUDIO) {
+                        /* rate & stereo convertion */
+                        if (enc->channels == channels &&
+                            enc->rate == sample_rate) {
+                            buftmp = audio_buf;
+                            nb_samples_out = nb_samples;
+                        } else {
+                            buftmp = audio_buf1;
+                            nb_samples_out = audio_resample(&ffenc->resample, 
+                                                            (short *)buftmp, (short *)audio_buf,
+                                                            nb_samples);
+                            
+                        }
+                        fifo_write(&ffenc->fifo, buftmp, nb_samples_out * enc->channels * 2, 
+                                   &ffenc->fifo.wptr);
+                    }
+                    ffenc = ffenc->next;
+                }
+                
+                /* compress as many frame as possible with each audio codec */
+                ffenc = first_codec;
+                while (ffenc != NULL) {
+                    enc = &ffenc->enc;
+                    if (enc->codec->type == CODEC_TYPE_AUDIO) {
+                        frame_bytes = enc->frame_size * 2 * enc->channels;
+                        
+                        while (fifo_read(&ffenc->fifo, audio_buf, frame_bytes, &ffenc->fifo.rptr) == 0) {
+                            ret = avencoder_encode(enc,
+                                                   audio_out, sizeof(audio_out), audio_buf);
+                            write_packet(ffenc, audio_out, ret);
+                        }
+                    }
+                    ffenc = ffenc->next;
+                }
+            }
+        }
+
+        if (use_video) {
+            ret = v4l_read_picture (picture, width, height, 
+                                    frame_number);
+            if (ret < 0)
+                break;
+            ffenc = first_codec;
+            while (ffenc != NULL) {
+                enc = &ffenc->enc;
+                if (enc->codec->type == CODEC_TYPE_VIDEO) {
+                    int n1, n2;
+                    /* feed each codec with its requested frame rate */
+                    n1 = (frame_number * enc->rate) / frame_rate;
+                    n2 = ((frame_number + 1) * enc->rate) / frame_rate;
+                    if (n2 > n1) {
+                        ret = avencoder_encode(enc, video_buffer, sizeof(video_buffer), picture);
+                        write_packet(ffenc, video_buffer, ret);
+                    }
+                }
+                ffenc = ffenc->next;
+            }
+            frame_number++;
+        }
+    }
+    
+    ffenc = first_codec;
+    while (ffenc != NULL) {
+        enc = &ffenc->enc;
+        avencoder_close(enc);
+        ffenc = ffenc->next;
+    }
+    close(audio_fd);
+    return 0;
+}
+
+
+void help(void)
+{
+    printf("ffserver version 1.0, Copyright (c) 2000 Gerard Lantau\n"
+           "usage: ffserver [-L] [-h] [-f configfile]\n"
+           "Hyper fast multi format Audio/Video streaming server\n"
+           "\n"
+           "-L            : print the LICENCE\n"
+           "-h            : this help\n"
+           "-f configfile : use configfile instead of /etc/ffserver.conf\n"
+           );
+}
+
+void licence(void)
+{
+    printf(
+    "ffserver version 1.0\n"
+    "Copyright (c) 2000 Gerard Lantau\n"
+    "This program is free software; you can redistribute it and/or modify\n"
+    "it under the terms of the GNU General Public License as published by\n"
+    "the Free Software Foundation; either version 2 of the License, or\n"
+    "(at your option) any later version.\n"
+    "\n"
+    "This program is distributed in the hope that it will be useful,\n"
+    "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+    "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
+    "GNU General Public License for more details.\n"
+    "\n"
+    "You should have received a copy of the GNU General Public License\n"
+    "along with this program; if not, write to the Free Software\n"
+    "Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n"
+    );
+}
+
+int main(int argc, char **argv)
+{
+    pthread_t http_server_tid;
+    const char *config_filename;
+    int c;
+
+    /* codecs */
+    register_avencoder(&ac3_encoder);
+    register_avencoder(&mp2_encoder);
+    register_avencoder(&mpeg1video_encoder);
+    register_avencoder(&h263_encoder);
+    register_avencoder(&rv10_encoder);
+    register_avencoder(&mjpeg_encoder);
+
+    /* audio video formats */
+    register_avformat(&mp2_format);
+    register_avformat(&ac3_format);
+    register_avformat(&mpeg_mux_format);
+    register_avformat(&mpeg1video_format);
+    register_avformat(&h263_format);
+    register_avformat(&rm_format);
+    register_avformat(&ra_format);
+    register_avformat(&asf_format);
+    register_avformat(&mpjpeg_format);
+    register_avformat(&jpeg_format);
+    register_avformat(&swf_format);
+
+    config_filename = "/etc/ffserver.conf";
+
+    for(;;) {
+        c = getopt_long_only(argc, argv, "Lh?f:", NULL, NULL);
+        if (c == -1)
+            break;
+        switch(c) {
+        case 'L':
+            licence();
+            exit(1);
+        case '?':
+        case 'h':
+            help();
+            exit(1);
+        case 'f':
+            config_filename = optarg;
+            break;
+        default:
+            exit(2);
+        }
+    }
+
+    /* address on which the server will handle connections */
+    my_addr.sin_family = AF_INET;
+    my_addr.sin_port = htons (8080);
+    my_addr.sin_addr.s_addr = htonl (INADDR_ANY);
+    nb_max_connections = 5;
+    first_stream = NULL;
+    logfilename[0] = '\0';
+
+    if (parse_ffconfig(config_filename) < 0) {
+        fprintf(stderr, "Incorrect config file - exiting.\n");
+        exit(1);
+    }
+
+    /* open log file if needed */
+    if (logfilename[0] != '\0') {
+        if (!strcmp(logfilename, "-"))
+            logfile = stdout;
+        else
+            logfile = fopen(logfilename, "w");
+    }
+
+    /* init fifo */
+    http_fifo_write_count = 0;
+    if (fifo_init(&http_fifo, FIFO_MAX_SIZE) < 0) {
+        fprintf(stderr, "Could not allow receive fifo\n");
+        exit(1);
+    }
+
+    if (master_url[0] == '\0') {
+        /* no master server: we grab ourself */
+
+        /* launch server thread */
+        if (pthread_create(&http_server_tid, NULL, 
+                           http_server_thread, NULL) != 0) {
+            fprintf(stderr, "Could not create http server thread\n");
+            exit(1);
+        }
+
+        /* launch the audio / video grab */
+        if (av_grab() < 0) {
+            fprintf(stderr, "Could not start audio/video grab\n");
+            exit(1);
+        }
+    } else {
+        /* master server : no thread are needed */
+        if (http_server(my_addr) < 0) {
+            fprintf(stderr, "Could start http server\n");
+            exit(1);
+        }
+    }
+
+    return 0;
+}