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librempeg/ffserver.c
Philip Gladstone 5eb765ef34 * Add code to restart ffmpeg if it crashes 
* Add code to monitor the actual datarates on the http connections
* Fix problem when ffmpeg uses more than 24 hours of CPU (display only problem)

Originally committed as revision 680 to svn://svn.ffmpeg.org/ffmpeg/trunk
2002-06-10 02:44:36 +00:00

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/*
* Multiple format streaming server
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define HAVE_AV_CONFIG_H
#include "avformat.h"
#include <stdarg.h>
#include <netinet/in.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <errno.h>
#include <sys/time.h>
#include <time.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <ctype.h>
#include <signal.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,
HTTPSTATE_RECEIVE_DATA,
HTTPSTATE_WAIT_FEED,
};
const char *http_state[] = {
"WAIT_REQUEST",
"SEND_HEADER",
"SEND_DATA_HEADER",
"SEND_DATA",
"SEND_DATA_TRAILER",
"RECEIVE_DATA",
"WAIT_FEED",
};
#define IOBUFFER_INIT_SIZE 8192
#define PBUFFER_INIT_SIZE 8192
/* 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)
typedef struct {
INT64 count1, count2;
long time1, time2;
} DataRateData;
/* context associated with one connection */
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_ptr, *buffer_end;
int http_error;
struct HTTPContext *next;
int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
INT64 data_count;
/* feed input */
int feed_fd;
/* input format handling */
AVFormatContext *fmt_in;
/* output format handling */
struct FFStream *stream;
/* -1 is invalid stream */
int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
int switch_feed_streams[MAX_STREAMS]; /* index of streams in the feed */
int switch_pending;
AVFormatContext fmt_ctx;
int last_packet_sent; /* true if last data packet was sent */
int suppress_log;
int bandwidth;
long start_time; /* In milliseconds - this wraps fairly often */
DataRateData datarate;
int wmp_client_id;
char protocol[16];
char method[16];
char url[128];
int buffer_size;
UINT8 *buffer;
int pbuffer_size;
UINT8 *pbuffer;
} HTTPContext;
/* each generated stream is described here */
enum StreamType {
STREAM_TYPE_LIVE,
STREAM_TYPE_STATUS,
STREAM_TYPE_REDIRECT,
};
/* description of each stream of the ffserver.conf file */
typedef struct FFStream {
enum StreamType stream_type;
char filename[1024]; /* stream filename */
struct FFStream *feed;
AVOutputFormat *fmt;
int nb_streams;
int prebuffer; /* Number of millseconds early to start */
long max_time; /* Number of milliseconds to run */
int send_on_key;
AVStream *streams[MAX_STREAMS];
int feed_streams[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 */
char author[512];
char title[512];
char copyright[512];
char comment[512];
pid_t pid; /* Of ffmpeg process */
time_t pid_start; /* Of ffmpeg process */
char **child_argv;
struct FFStream *next;
/* feed specific */
int feed_opened; /* true if someone if writing to feed */
int is_feed; /* true if it is a feed */
int conns_served;
INT64 bytes_served;
INT64 feed_max_size; /* maximum storage size */
INT64 feed_write_index; /* current write position in feed (it wraps round) */
INT64 feed_size; /* current size of feed */
struct FFStream *next_feed;
} FFStream;
typedef struct FeedData {
long long data_count;
float avg_frame_size; /* frame size averraged over last frames with exponential mean */
} FeedData;
struct sockaddr_in my_addr;
char logfilename[1024];
HTTPContext *first_http_ctx;
FFStream *first_feed; /* contains only feeds */
FFStream *first_stream; /* contains all streams, including feeds */
static int handle_http(HTTPContext *c);
static int http_parse_request(HTTPContext *c);
static int http_send_data(HTTPContext *c);
static void compute_stats(HTTPContext *c);
static int open_input_stream(HTTPContext *c, const char *info);
static int http_start_receive_data(HTTPContext *c);
static int http_receive_data(HTTPContext *c);
static const char *my_program_name;
static int ffserver_debug;
static int no_launch;
static int need_to_start_children;
int nb_max_connections;
int nb_connections;
int nb_max_bandwidth;
int nb_bandwidth;
static long cur_time; // Making this global saves on passing it around everywhere
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);
fflush(logfile);
}
va_end(ap);
}
static void log_connection(HTTPContext *c)
{
char buf1[32], buf2[32], *p;
time_t ti;
if (c->suppress_log)
return;
/* 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 %lld\n",
buf1, buf2, c->method, c->url, c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
}
static void update_datarate(DataRateData *drd, INT64 count)
{
if (!drd->time1 && !drd->count1) {
drd->time1 = drd->time2 = cur_time;
drd->count1 = drd->count2 = count;
} else {
if (cur_time - drd->time2 > 5000) {
drd->time1 = drd->time2;
drd->count1 = drd->count2;
drd->time2 = cur_time;
drd->count2 = count;
}
}
}
/* In bytes per second */
static int compute_datarate(DataRateData *drd, INT64 count)
{
if (cur_time == drd->time1)
return 0;
return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
}
static void start_children(FFStream *feed)
{
if (no_launch)
return;
for (; feed; feed = feed->next) {
if (feed->child_argv && !feed->pid) {
feed->pid_start = time(0);
feed->pid = fork();
if (feed->pid < 0) {
fprintf(stderr, "Unable to create children\n");
exit(1);
}
if (!feed->pid) {
/* In child */
char pathname[1024];
char *slash;
int i;
for (i = 3; i < 256; i++) {
close(i);
}
if (!ffserver_debug) {
i = open("/dev/null", O_RDWR);
if (i)
dup2(i, 0);
dup2(i, 1);
dup2(i, 2);
if (i)
close(i);
}
pstrcpy(pathname, sizeof(pathname), my_program_name);
slash = strrchr(pathname, '/');
if (!slash) {
slash = pathname;
} else {
slash++;
}
strcpy(slash, "ffmpeg");
execvp(pathname, feed->child_argv);
_exit(1);
}
}
}
}
/* main loop of the http server */
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;
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");
start_children(first_feed);
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++;
/* 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;
case HTTPSTATE_RECEIVE_DATA:
c->poll_entry = poll_entry;
poll_entry->fd = fd;
poll_entry->events = POLLIN;
poll_entry++;
break;
case HTTPSTATE_WAIT_FEED:
/* need to catch errors */
c->poll_entry = poll_entry;
poll_entry->fd = fd;
poll_entry->events = POLLIN;/* Maybe this will work */
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();
if (need_to_start_children) {
need_to_start_children = 0;
start_children(first_feed);
}
/* now handle the events */
cp = &first_http_ctx;
while ((*cp) != NULL) {
c = *cp;
if (handle_http (c) < 0) {
/* close and free the connection */
log_connection(c);
close(c->fd);
if (c->fmt_in)
av_close_input_file(c->fmt_in);
*cp = c->next;
nb_bandwidth -= c->bandwidth;
av_free(c->buffer);
av_free(c->pbuffer);
av_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, (struct sockaddr *)&from_addr,
&len);
if (fd >= 0) {
fcntl(fd, F_SETFL, O_NONBLOCK);
/* XXX: should output a warning page when coming
close to the connection limit */
if (nb_connections >= nb_max_connections) {
c = NULL;
} else {
/* add a new connection */
c = av_mallocz(sizeof(HTTPContext));
if (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 = av_malloc(c->buffer_size = IOBUFFER_INIT_SIZE);
c->pbuffer = av_malloc(c->pbuffer_size = PBUFFER_INIT_SIZE);
if (!c->buffer || !c->pbuffer) {
av_free(c->buffer);
av_free(c->pbuffer);
av_freep(&c);
} else {
c->buffer_ptr = c->buffer;
c->buffer_end = c->buffer + c->buffer_size;
c->timeout = cur_time + REQUEST_TIMEOUT;
c->start_time = cur_time;
nb_connections++;
}
}
}
if (!c) {
close(fd);
}
}
}
poll_entry++;
}
}
static int handle_http(HTTPContext *c)
{
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->stream)
c->stream->bytes_served += len;
c->data_count += 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;
case HTTPSTATE_RECEIVE_DATA:
/* no need to read if no events */
if (c->poll_entry->revents & (POLLERR | POLLHUP))
return -1;
if (!(c->poll_entry->revents & POLLIN))
return 0;
if (http_receive_data(c) < 0)
return -1;
break;
case HTTPSTATE_WAIT_FEED:
/* no need to read if no events */
if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
return -1;
/* nothing to do, we'll be waken up by incoming feed packets */
break;
default:
return -1;
}
return 0;
}
static int extract_rates(char *rates, int ratelen, const char *request)
{
const char *p;
for (p = request; *p && *p != '\r' && *p != '\n'; ) {
if (strncasecmp(p, "Pragma:", 7) == 0) {
const char *q = p + 7;
while (*q && *q != '\n' && isspace(*q))
q++;
if (strncasecmp(q, "stream-switch-entry=", 20) == 0) {
int stream_no;
int rate_no;
q += 20;
memset(rates, 0xff, ratelen);
while (1) {
while (*q && *q != '\n' && *q != ':')
q++;
if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2) {
break;
}
stream_no--;
if (stream_no < ratelen && stream_no >= 0) {
rates[stream_no] = rate_no;
}
while (*q && *q != '\n' && !isspace(*q))
q++;
}
return 1;
}
}
p = strchr(p, '\n');
if (!p)
break;
p++;
}
return 0;
}
static int find_stream_in_feed(FFStream *feed, AVCodecContext *codec, int bit_rate)
{
int i;
int best_bitrate = 100000000;
int best = -1;
for (i = 0; i < feed->nb_streams; i++) {
AVCodecContext *feed_codec = &feed->streams[i]->codec;
if (feed_codec->codec_id != codec->codec_id ||
feed_codec->sample_rate != codec->sample_rate ||
feed_codec->width != codec->width ||
feed_codec->height != codec->height) {
continue;
}
/* Potential stream */
/* We want the fastest stream less than bit_rate, or the slowest
* faster than bit_rate
*/
if (feed_codec->bit_rate <= bit_rate) {
if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) {
best_bitrate = feed_codec->bit_rate;
best = i;
}
} else {
if (feed_codec->bit_rate < best_bitrate) {
best_bitrate = feed_codec->bit_rate;
best = i;
}
}
}
return best;
}
static int modify_current_stream(HTTPContext *c, char *rates)
{
int i;
FFStream *req = c->stream;
int action_required = 0;
for (i = 0; i < req->nb_streams; i++) {
AVCodecContext *codec = &req->streams[i]->codec;
switch(rates[i]) {
case 0:
c->switch_feed_streams[i] = req->feed_streams[i];
break;
case 1:
c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
break;
case 2:
/* Wants off or slow */
c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
#ifdef WANTS_OFF
/* This doesn't work well when it turns off the only stream! */
c->switch_feed_streams[i] = -2;
c->feed_streams[i] = -2;
#endif
break;
}
if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i])
action_required = 1;
}
return action_required;
}
static void do_switch_stream(HTTPContext *c, int i)
{
if (c->switch_feed_streams[i] >= 0) {
#ifdef PHILIP
c->feed_streams[i] = c->switch_feed_streams[i];
#endif
/* Now update the stream */
}
c->switch_feed_streams[i] = -1;
}
/* parse http request and prepare header */
static int http_parse_request(HTTPContext *c)
{
char *p;
int post;
int doing_asx;
int doing_asf_redirector;
int doing_ram;
char cmd[32];
char info[1024], *filename;
char url[1024], *q;
char protocol[32];
char msg[1024];
const char *mime_type;
FFStream *stream;
int i;
char ratebuf[32];
char *useragent = 0;
p = c->buffer;
q = cmd;
while (!isspace(*p) && *p != '\0') {
if ((q - cmd) < sizeof(cmd) - 1)
*q++ = *p;
p++;
}
*q = '\0';
pstrcpy(c->method, sizeof(c->method), cmd);
if (!strcmp(cmd, "GET"))
post = 0;
else if (!strcmp(cmd, "POST"))
post = 1;
else
return -1;
while (isspace(*p)) p++;
q = url;
while (!isspace(*p) && *p != '\0') {
if ((q - url) < sizeof(url) - 1)
*q++ = *p;
p++;
}
*q = '\0';
pstrcpy(c->url, sizeof(c->url), url);
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;
pstrcpy(c->protocol, sizeof(c->protocol), protocol);
/* find the filename and the optional info string in the request */
p = url;
if (*p == '/')
p++;
filename = p;
p = strchr(p, '?');
if (p) {
pstrcpy(info, sizeof(info), p);
*p = '\0';
} else {
info[0] = '\0';
}
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
if (strncasecmp(p, "User-Agent:", 11) == 0) {
useragent = p + 11;
if (*useragent && *useragent != '\n' && isspace(*useragent))
useragent++;
break;
}
p = strchr(p, '\n');
if (!p)
break;
p++;
}
if (strlen(filename) > 4 && strcmp(".asx", filename + strlen(filename) - 4) == 0) {
doing_asx = 1;
filename[strlen(filename)-1] = 'f';
} else {
doing_asx = 0;
}
if (strlen(filename) > 4 && strcmp(".asf", filename + strlen(filename) - 4) == 0 &&
(!useragent || strncasecmp(useragent, "NSPlayer", 8) != 0)) {
/* if this isn't WMP or lookalike, return the redirector file */
doing_asf_redirector = 1;
} else {
doing_asf_redirector = 0;
}
if (strlen(filename) > 4 &&
(strcmp(".rpm", filename + strlen(filename) - 4) == 0 ||
strcmp(".ram", filename + strlen(filename) - 4) == 0)) {
doing_ram = 1;
strcpy(filename + strlen(filename)-2, "m");
} else {
doing_ram = 0;
}
stream = first_stream;
while (stream != NULL) {
if (!strcmp(stream->filename, filename))
break;
stream = stream->next;
}
if (stream == NULL) {
sprintf(msg, "File '%s' not found", url);
goto send_error;
}
c->stream = stream;
memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
if (stream->stream_type == STREAM_TYPE_REDIRECT) {
c->http_error = 301;
q = c->buffer;
q += sprintf(q, "HTTP/1.0 301 Moved\r\n");
q += sprintf(q, "Location: %s\r\n", stream->feed_filename);
q += sprintf(q, "Content-type: text/html\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "<html><head><title>Moved</title></head><body>\r\n");
q += sprintf(q, "You should be <a href=\"%s\">redirected</a>.\r\n", stream->feed_filename);
q += sprintf(q, "</body></html>\r\n");
/* prepare output buffer */
c->buffer_ptr = c->buffer;
c->buffer_end = q;
c->state = HTTPSTATE_SEND_HEADER;
return 0;
}
/* If this is WMP, get the rate information */
if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
if (modify_current_stream(c, ratebuf)) {
for (i = 0; i < sizeof(c->feed_streams) / sizeof(c->feed_streams[0]); i++) {
if (c->switch_feed_streams[i] >= 0)
do_switch_stream(c, i);
}
}
}
if (post == 0 && stream->stream_type == STREAM_TYPE_LIVE) {
/* See if we meet the bandwidth requirements */
for(i=0;i<stream->nb_streams;i++) {
AVStream *st = stream->streams[i];
switch(st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
c->bandwidth += st->codec.bit_rate;
break;
case CODEC_TYPE_VIDEO:
c->bandwidth += st->codec.bit_rate;
break;
default:
av_abort();
}
}
}
c->bandwidth /= 1000;
nb_bandwidth += c->bandwidth;
if (post == 0 && nb_max_bandwidth < nb_bandwidth) {
c->http_error = 200;
q = c->buffer;
q += sprintf(q, "HTTP/1.0 200 Server too busy\r\n");
q += sprintf(q, "Content-type: text/html\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "<html><head><title>Too busy</title></head><body>\r\n");
q += sprintf(q, "The server is too busy to serve your request at this time.<p>\r\n");
q += sprintf(q, "The bandwidth being served (including your stream) is %dkbit/sec, and this exceeds the limit of %dkbit/sec\r\n",
nb_bandwidth, nb_max_bandwidth);
q += sprintf(q, "</body></html>\r\n");
/* prepare output buffer */
c->buffer_ptr = c->buffer;
c->buffer_end = q;
c->state = HTTPSTATE_SEND_HEADER;
return 0;
}
if (doing_asx || doing_ram || doing_asf_redirector) {
char *hostinfo = 0;
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
if (strncasecmp(p, "Host:", 5) == 0) {
hostinfo = p + 5;
break;
}
p = strchr(p, '\n');
if (!p)
break;
p++;
}
if (hostinfo) {
char *eoh;
char hostbuf[260];
while (isspace(*hostinfo))
hostinfo++;
eoh = strchr(hostinfo, '\n');
if (eoh) {
if (eoh[-1] == '\r')
eoh--;
if (eoh - hostinfo < sizeof(hostbuf) - 1) {
memcpy(hostbuf, hostinfo, eoh - hostinfo);
hostbuf[eoh - hostinfo] = 0;
c->http_error = 200;
q = c->buffer;
if (doing_asx) {
q += sprintf(q, "HTTP/1.0 200 ASX Follows\r\n");
q += sprintf(q, "Content-type: video/x-ms-asf\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "<ASX Version=\"3\">\r\n");
q += sprintf(q, "<!-- Autogenerated by ffserver -->\r\n");
q += sprintf(q, "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n",
hostbuf, filename, info);
q += sprintf(q, "</ASX>\r\n");
} else if (doing_ram) {
q += sprintf(q, "HTTP/1.0 200 RAM Follows\r\n");
q += sprintf(q, "Content-type: audio/x-pn-realaudio\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "# Autogenerated by ffserver\r\n");
q += sprintf(q, "http://%s/%s%s\r\n",
hostbuf, filename, info);
} else if (doing_asf_redirector) {
q += sprintf(q, "HTTP/1.0 200 ASF Redirect follows\r\n");
q += sprintf(q, "Content-type: video/x-ms-asf\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "[Reference]\r\n");
q += sprintf(q, "Ref1=http://%s/%s%s\r\n",
hostbuf, filename, info);
} else
av_abort();
/* prepare output buffer */
c->buffer_ptr = c->buffer;
c->buffer_end = q;
c->state = HTTPSTATE_SEND_HEADER;
return 0;
}
}
}
sprintf(msg, "ASX/RAM file not handled");
goto send_error;
}
stream->conns_served++;
/* XXX: add there authenticate and IP match */
if (post) {
/* if post, it means a feed is being sent */
if (!stream->is_feed) {
/* However it might be a status report from WMP! Lets log the data
* as it might come in handy one day
*/
char *logline = 0;
int client_id = 0;
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
if (strncasecmp(p, "Pragma: log-line=", 17) == 0) {
logline = p;
break;
}
if (strncasecmp(p, "Pragma: client-id=", 18) == 0) {
client_id = strtol(p + 18, 0, 10);
}
p = strchr(p, '\n');
if (!p)
break;
p++;
}
if (logline) {
char *eol = strchr(logline, '\n');
logline += 17;
if (eol) {
if (eol[-1] == '\r')
eol--;
http_log("%.*s\n", eol - logline, logline);
c->suppress_log = 1;
}
}
#ifdef DEBUG_WMP
http_log("\nGot request:\n%s\n", c->buffer);
#endif
if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
HTTPContext *wmpc;
/* Now we have to find the client_id */
for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
if (wmpc->wmp_client_id == client_id)
break;
}
if (wmpc) {
if (modify_current_stream(wmpc, ratebuf)) {
wmpc->switch_pending = 1;
}
}
}
sprintf(msg, "POST command not handled");
goto send_error;
}
if (http_start_receive_data(c) < 0) {
sprintf(msg, "could not open feed");
goto send_error;
}
c->http_error = 0;
c->state = HTTPSTATE_RECEIVE_DATA;
return 0;
}
#ifdef DEBUG_WMP
if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0) {
http_log("\nGot request:\n%s\n", c->buffer);
}
#endif
if (c->stream->stream_type == STREAM_TYPE_STATUS)
goto send_stats;
/* open input stream */
if (open_input_stream(c, info) < 0) {
sprintf(msg, "Input stream corresponding to '%s' not found", url);
goto send_error;
}
/* 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, "Pragma: no-cache\r\n");
/* for asf, we need extra headers */
if (!strcmp(c->stream->fmt->name,"asf")) {
/* Need to allocate a client id */
static int wmp_session;
if (!wmp_session)
wmp_session = time(0) & 0xffffff;
c->wmp_client_id = ++wmp_session;
q += sprintf(q, "Server: Cougar 4.1.0.3923\r\nCache-Control: no-cache\r\nPragma: client-id=%d\r\nPragma: features=\"broadcast\"\r\n", c->wmp_client_id);
mime_type = "application/octet-stream";
}
q += sprintf(q, "Content-Type: %s\r\n", mime_type);
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 int fmt_bytecount(char *q, INT64 count)
{
static const char *suffix = " kMGTP";
const char *s;
for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++) {
}
return sprintf(q, "%lld%c", count, *s);
}
static void compute_stats(HTTPContext *c)
{
HTTPContext *c1;
FFStream *stream;
char *q, *p;
time_t ti;
int i;
char *new_buffer;
new_buffer = av_malloc(65536);
if (new_buffer) {
av_free(c->buffer);
c->buffer_size = 65536;
c->buffer = new_buffer;
c->buffer_ptr = c->buffer;
c->buffer_end = c->buffer + c->buffer_size;
}
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>\n");
if (c->stream->feed_filename) {
q += sprintf(q, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename);
}
q += sprintf(q, "</HEAD>\n<BODY>");
q += sprintf(q, "<H1>FFServer Status</H1>\n");
/* format status */
q += sprintf(q, "<H2>Available Streams</H2>\n");
q += sprintf(q, "<TABLE cellspacing=0 cellpadding=4>\n");
q += sprintf(q, "<TR><Th valign=top>Path<th align=left>Served<br>Conns<Th><br>bytes<Th valign=top>Format<Th>Bit rate<br>kbits/s<Th align=left>Video<br>kbits/s<th><br>Codec<Th align=left>Audio<br>kbits/s<th><br>Codec<Th align=left valign=top>Feed\n");
stream = first_stream;
while (stream != NULL) {
char sfilename[1024];
char *eosf;
if (stream->feed != stream) {
pstrcpy(sfilename, sizeof(sfilename) - 1, stream->filename);
eosf = sfilename + strlen(sfilename);
if (eosf - sfilename >= 4) {
if (strcmp(eosf - 4, ".asf") == 0) {
strcpy(eosf - 4, ".asx");
} else if (strcmp(eosf - 3, ".rm") == 0) {
strcpy(eosf - 3, ".ram");
}
}
q += sprintf(q, "<TR><TD><A HREF=\"/%s\">%s</A> ",
sfilename, stream->filename);
q += sprintf(q, "<td align=right> %d <td align=right> ",
stream->conns_served);
q += fmt_bytecount(q, stream->bytes_served);
switch(stream->stream_type) {
case STREAM_TYPE_LIVE:
{
int audio_bit_rate = 0;
int video_bit_rate = 0;
char *audio_codec_name = "";
char *video_codec_name = "";
char *audio_codec_name_extra = "";
char *video_codec_name_extra = "";
for(i=0;i<stream->nb_streams;i++) {
AVStream *st = stream->streams[i];
AVCodec *codec = avcodec_find_encoder(st->codec.codec_id);
switch(st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
audio_bit_rate += st->codec.bit_rate;
if (codec) {
if (*audio_codec_name)
audio_codec_name_extra = "...";
audio_codec_name = codec->name;
}
break;
case CODEC_TYPE_VIDEO:
video_bit_rate += st->codec.bit_rate;
if (codec) {
if (*video_codec_name)
video_codec_name_extra = "...";
video_codec_name = codec->name;
}
break;
default:
av_abort();
}
}
q += sprintf(q, "<TD align=center> %s <TD align=right> %d <TD align=right> %d <TD> %s %s <TD align=right> %d <TD> %s %s",
stream->fmt->name,
(audio_bit_rate + video_bit_rate) / 1000,
video_bit_rate / 1000, video_codec_name, video_codec_name_extra,
audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra);
if (stream->feed) {
q += sprintf(q, "<TD>%s", stream->feed->filename);
} else {
q += sprintf(q, "<TD>%s", stream->feed_filename);
}
q += sprintf(q, "\n");
}
break;
default:
q += sprintf(q, "<TD align=center> - <TD align=right> - <TD align=right> - <td><td align=right> - <TD>\n");
break;
}
}
stream = stream->next;
}
q += sprintf(q, "</TABLE>\n");
stream = first_stream;
while (stream != NULL) {
if (stream->feed == stream) {
q += sprintf(q, "<h2>Feed %s</h2>", stream->filename);
if (stream->pid) {
FILE *pid_stat;
char ps_cmd[64];
q += sprintf(q, "Running as pid %d.\n", stream->pid);
#ifdef linux
/* This is somewhat linux specific I guess */
snprintf(ps_cmd, sizeof(ps_cmd), "ps -o \"%%cpu,bsdtime\" --no-headers %d", stream->pid);
pid_stat = popen(ps_cmd, "r");
if (pid_stat) {
char cpuperc[10];
char cpuused[64];
if (fscanf(pid_stat, "%10s %64s", cpuperc, cpuused) == 2) {
q += sprintf(q, "Currently using %s%% of the cpu. Total time used %s.\n",
cpuperc, cpuused);
}
fclose(pid_stat);
}
#endif
q += sprintf(q, "<p>");
}
q += sprintf(q, "<table cellspacing=0 cellpadding=4><tr><th>Stream<th>type<th>kbits/s<th align=left>codec<th align=left>Parameters\n");
for (i = 0; i < stream->nb_streams; i++) {
AVStream *st = stream->streams[i];
AVCodec *codec = avcodec_find_encoder(st->codec.codec_id);
char *type = "unknown";
char parameters[64];
parameters[0] = 0;
switch(st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
type = "audio";
break;
case CODEC_TYPE_VIDEO:
type = "video";
sprintf(parameters, "%dx%d, q=%d-%d, fps=%d", st->codec.width, st->codec.height,
st->codec.qmin, st->codec.qmax, st->codec.frame_rate / FRAME_RATE_BASE);
break;
default:
av_abort();
}
q += sprintf(q, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n",
i, type, st->codec.bit_rate/1000, codec ? codec->name : "", parameters);
}
q += sprintf(q, "</table>\n");
}
stream = stream->next;
}
#if 0
{
float avg;
AVCodecContext *enc;
char buf[1024];
/* feed status */
stream = first_feed;
while (stream != NULL) {
q += sprintf(q, "<H1>Feed '%s'</H1>\n", stream->filename);
q += sprintf(q, "<TABLE>\n");
q += sprintf(q, "<TR><TD>Parameters<TD>Frame count<TD>Size<TD>Avg bitrate (kbits/s)\n");
for(i=0;i<stream->nb_streams;i++) {
AVStream *st = stream->streams[i];
FeedData *fdata = st->priv_data;
enc = &st->codec;
avcodec_string(buf, sizeof(buf), enc);
avg = fdata->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, fdata->data_count, avg / 1000.0);
}
q += sprintf(q, "</TABLE>\n");
stream = stream->next_feed;
}
}
#endif
/* connection status */
q += sprintf(q, "<H2>Connection Status</H2>\n");
q += sprintf(q, "Number of connections: %d / %d<BR>\n",
nb_connections, nb_max_connections);
q += sprintf(q, "Bandwidth in use: %dk / %dk<BR>\n",
nb_bandwidth, nb_max_bandwidth);
q += sprintf(q, "<TABLE>\n");
q += sprintf(q, "<TR><Th>#<Th>File<Th>IP<Th>State<Th>Target bits/sec<Th>Actual bits/sec<Th>Bytes transferred\n");
c1 = first_http_ctx;
i = 0;
while (c1 != NULL && q < (char *) c->buffer + c->buffer_size - 2048) {
int bitrate;
int j;
bitrate = 0;
for (j = 0; j < c1->stream->nb_streams; j++) {
if (c1->feed_streams[j] >= 0) {
bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec.bit_rate;
}
}
i++;
p = inet_ntoa(c1->from_addr.sin_addr);
q += sprintf(q, "<TR><TD><B>%d</B><TD>%s%s <TD> %s <TD> %s <td align=right>",
i, c1->stream->filename,
c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
p,
http_state[c1->state]);
q += fmt_bytecount(q, bitrate);
q += sprintf(q, "<td align=right>");
q += fmt_bytecount(q, compute_datarate(&c1->datarate, c1->data_count) * 8);
q += sprintf(q, "<td align=right>");
q += fmt_bytecount(q, c1->data_count);
*q++ = '\n';
c1 = c1->next;
}
q += sprintf(q, "</TABLE>\n");
/* date */
ti = time(NULL);
p = ctime(&ti);
q += sprintf(q, "<HR size=1 noshade>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 (c->buffer_ptr == c->buffer_end || !c->buffer_ptr)
c->buffer_ptr = c->buffer_end = c->buffer;
if (c->buffer_end - c->buffer + size > c->buffer_size) {
int new_buffer_size = c->buffer_size * 2;
UINT8 *new_buffer;
if (new_buffer_size <= c->buffer_end - c->buffer + size) {
new_buffer_size = c->buffer_end - c->buffer + size + c->buffer_size;
}
new_buffer = av_malloc(new_buffer_size);
if (new_buffer) {
memcpy(new_buffer, c->buffer, c->buffer_end - c->buffer);
c->buffer_end += (new_buffer - c->buffer);
c->buffer_ptr += (new_buffer - c->buffer);
av_free(c->buffer);
c->buffer = new_buffer;
c->buffer_size = new_buffer_size;
} else {
av_abort();
}
}
memcpy(c->buffer_end, buf, size);
c->buffer_end += size;
}
static int open_input_stream(HTTPContext *c, const char *info)
{
char buf[128];
char input_filename[1024];
AVFormatContext *s;
int buf_size;
INT64 stream_pos;
/* find file name */
if (c->stream->feed) {
strcpy(input_filename, c->stream->feed->feed_filename);
buf_size = FFM_PACKET_SIZE;
/* compute position (absolute time) */
if (find_info_tag(buf, sizeof(buf), "date", info)) {
stream_pos = parse_date(buf, 0);
} else if (find_info_tag(buf, sizeof(buf), "buffer", info)) {
int prebuffer = strtol(buf, 0, 10);
stream_pos = gettime() - prebuffer * 1000000;
} else {
stream_pos = gettime() - c->stream->prebuffer * 1000;
}
} else {
strcpy(input_filename, c->stream->feed_filename);
buf_size = 0;
/* compute position (relative time) */
if (find_info_tag(buf, sizeof(buf), "date", info)) {
stream_pos = parse_date(buf, 1);
} else {
stream_pos = 0;
}
}
if (input_filename[0] == '\0')
return -1;
/* open stream */
if (av_open_input_file(&s, input_filename, NULL, buf_size, NULL) < 0)
return -1;
c->fmt_in = s;
if (c->fmt_in->iformat->read_seek) {
c->fmt_in->iformat->read_seek(c->fmt_in, stream_pos);
}
// printf("stream %s opened pos=%0.6f\n", input_filename, stream_pos / 1000000.0);
return 0;
}
static int http_prepare_data(HTTPContext *c)
{
int i;
switch(c->state) {
case HTTPSTATE_SEND_DATA_HEADER:
memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
pstrcpy(c->fmt_ctx.author, sizeof(c->fmt_ctx.author), c->stream->author);
pstrcpy(c->fmt_ctx.comment, sizeof(c->fmt_ctx.comment), c->stream->comment);
pstrcpy(c->fmt_ctx.copyright, sizeof(c->fmt_ctx.copyright), c->stream->copyright);
pstrcpy(c->fmt_ctx.title, sizeof(c->fmt_ctx.title), c->stream->title);
if (c->stream->feed) {
/* open output stream by using specified codecs */
c->fmt_ctx.oformat = c->stream->fmt;
c->fmt_ctx.nb_streams = c->stream->nb_streams;
for(i=0;i<c->fmt_ctx.nb_streams;i++) {
AVStream *st;
st = av_mallocz(sizeof(AVStream));
c->fmt_ctx.streams[i] = st;
if (c->stream->feed == c->stream)
memcpy(st, c->stream->streams[i], sizeof(AVStream));
else
memcpy(st, c->stream->feed->streams[c->stream->feed_streams[i]], sizeof(AVStream));
st->codec.frame_number = 0; /* XXX: should be done in
AVStream, not in codec */
}
c->got_key_frame = 0;
} else {
/* open output stream by using codecs in specified file */
c->fmt_ctx.oformat = c->stream->fmt;
c->fmt_ctx.nb_streams = c->fmt_in->nb_streams;
for(i=0;i<c->fmt_ctx.nb_streams;i++) {
AVStream *st;
st = av_mallocz(sizeof(AVStream));
c->fmt_ctx.streams[i] = st;
memcpy(st, c->fmt_in->streams[i], sizeof(AVStream));
st->codec.frame_number = 0; /* XXX: should be done in
AVStream, not in codec */
}
c->got_key_frame = 0;
}
init_put_byte(&c->fmt_ctx.pb, c->pbuffer, c->pbuffer_size,
1, c, NULL, http_write_packet, NULL);
c->fmt_ctx.pb.is_streamed = 1;
/* prepare header */
av_write_header(&c->fmt_ctx);
c->state = HTTPSTATE_SEND_DATA;
c->last_packet_sent = 0;
break;
case HTTPSTATE_SEND_DATA:
/* find a new packet */
#if 0
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;
}
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 = av_malloc(payload_size);
if (fifo_read(&http_fifo, payload, payload_size, &c->rptr) < 0) {
/* cannot read all the payload */
av_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;
for(i=0;i<c->fmt_ctx.nb_streams;i++) {
AVStream *st = c->fmt_ctx.streams[i];
if (test_header(&hdr, &st->codec)) {
/* only begin sending when got a key frame */
if (st->codec.key_frame)
c->got_key_frame |= 1 << i;
if (c->got_key_frame & (1 << i)) {
ret = c->fmt_ctx.format->write_packet(&c->fmt_ctx, i,
payload, payload_size);
}
break;
}
}
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;
}
av_free(payload);
#endif
{
AVPacket pkt;
/* read a packet from the input stream */
if (c->stream->feed) {
ffm_set_write_index(c->fmt_in,
c->stream->feed->feed_write_index,
c->stream->feed->feed_size);
}
if (c->stream->max_time &&
c->stream->max_time + c->start_time - cur_time < 0) {
/* We have timed out */
c->state = HTTPSTATE_SEND_DATA_TRAILER;
} else if (av_read_packet(c->fmt_in, &pkt) < 0) {
if (c->stream->feed && c->stream->feed->feed_opened) {
/* if coming from feed, it means we reached the end of the
ffm file, so must wait for more data */
c->state = HTTPSTATE_WAIT_FEED;
return 1; /* state changed */
} else {
/* must send trailer now because eof or error */
c->state = HTTPSTATE_SEND_DATA_TRAILER;
}
} else {
/* send it to the appropriate stream */
if (c->stream->feed) {
/* if coming from a feed, select the right stream */
if (c->switch_pending) {
c->switch_pending = 0;
for(i=0;i<c->stream->nb_streams;i++) {
if (c->switch_feed_streams[i] == pkt.stream_index) {
if (pkt.flags & PKT_FLAG_KEY) {
do_switch_stream(c, i);
}
}
if (c->switch_feed_streams[i] >= 0) {
c->switch_pending = 1;
}
}
}
for(i=0;i<c->stream->nb_streams;i++) {
if (c->feed_streams[i] == pkt.stream_index) {
pkt.stream_index = i;
if (pkt.flags & PKT_FLAG_KEY) {
c->got_key_frame |= 1 << i;
}
/* See if we have all the key frames, then
* we start to send. This logic is not quite
* right, but it works for the case of a
* single video stream with one or more
* audio streams (for which every frame is
* typically a key frame).
*/
if (!c->stream->send_on_key || ((c->got_key_frame + 1) >> c->stream->nb_streams)) {
goto send_it;
}
}
}
} else {
AVCodecContext *codec;
send_it:
/* Fudge here */
codec = &c->fmt_ctx.streams[pkt.stream_index]->codec;
codec->key_frame = ((pkt.flags & PKT_FLAG_KEY) != 0);
#ifdef PJSG
if (codec->codec_type == CODEC_TYPE_AUDIO) {
codec->frame_size = (codec->sample_rate * pkt.duration + 500000) / 1000000;
/* printf("Calculated size %d, from sr %d, duration %d\n", codec->frame_size, codec->sample_rate, pkt.duration); */
}
#endif
if (av_write_packet(&c->fmt_ctx, &pkt, 0))
c->state = HTTPSTATE_SEND_DATA_TRAILER;
codec->frame_number++;
}
av_free_packet(&pkt);
}
}
break;
default:
case HTTPSTATE_SEND_DATA_TRAILER:
/* last packet test ? */
if (c->last_packet_sent)
return -1;
/* prepare header */
av_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, ret;
while (c->buffer_ptr >= c->buffer_end) {
ret = http_prepare_data(c);
if (ret < 0)
return -1;
else if (ret == 0) {
continue;
} else {
/* state change requested */
return 0;
}
}
if (c->buffer_end > c->buffer_ptr) {
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;
update_datarate(&c->datarate, c->data_count);
if (c->stream)
c->stream->bytes_served += len;
}
}
return 0;
}
static int http_start_receive_data(HTTPContext *c)
{
int fd;
if (c->stream->feed_opened)
return -1;
/* open feed */
fd = open(c->stream->feed_filename, O_RDWR);
if (fd < 0)
return -1;
c->feed_fd = fd;
c->stream->feed_write_index = ffm_read_write_index(fd);
c->stream->feed_size = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
/* init buffer input */
c->buffer_ptr = c->buffer;
c->buffer_end = c->buffer + FFM_PACKET_SIZE;
c->stream->feed_opened = 1;
return 0;
}
static int http_receive_data(HTTPContext *c)
{
HTTPContext *c1;
if (c->buffer_end > c->buffer_ptr) {
int len;
len = read(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr);
if (len < 0) {
if (errno != EAGAIN && errno != EINTR) {
/* error : close connection */
goto fail;
}
} else if (len == 0) {
/* end of connection : close it */
goto fail;
} else {
c->buffer_ptr += len;
c->data_count += len;
update_datarate(&c->datarate, c->data_count);
}
}
if (c->buffer_ptr >= c->buffer_end) {
FFStream *feed = c->stream;
/* a packet has been received : write it in the store, except
if header */
if (c->data_count > FFM_PACKET_SIZE) {
// printf("writing pos=0x%Lx size=0x%Lx\n", feed->feed_write_index, feed->feed_size);
/* XXX: use llseek or url_seek */
lseek(c->feed_fd, feed->feed_write_index, SEEK_SET);
write(c->feed_fd, c->buffer, FFM_PACKET_SIZE);
feed->feed_write_index += FFM_PACKET_SIZE;
/* update file size */
if (feed->feed_write_index > c->stream->feed_size)
feed->feed_size = feed->feed_write_index;
/* handle wrap around if max file size reached */
if (feed->feed_write_index >= c->stream->feed_max_size)
feed->feed_write_index = FFM_PACKET_SIZE;
/* write index */
ffm_write_write_index(c->feed_fd, feed->feed_write_index);
/* wake up any waiting connections */
for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
if (c1->state == HTTPSTATE_WAIT_FEED &&
c1->stream->feed == c->stream->feed) {
c1->state = HTTPSTATE_SEND_DATA;
}
}
} else {
/* We have a header in our hands that contains useful data */
AVFormatContext s;
AVInputFormat *fmt_in;
ByteIOContext *pb = &s.pb;
int i;
memset(&s, 0, sizeof(s));
url_open_buf(pb, c->buffer, c->buffer_end - c->buffer, URL_RDONLY);
pb->buf_end = c->buffer_end; /* ?? */
pb->is_streamed = 1;
/* use feed output format name to find corresponding input format */
fmt_in = av_find_input_format(feed->fmt->name);
if (!fmt_in)
goto fail;
s.priv_data = av_mallocz(fmt_in->priv_data_size);
if (!s.priv_data)
goto fail;
if (fmt_in->read_header(&s, 0) < 0) {
av_freep(&s.priv_data);
goto fail;
}
/* Now we have the actual streams */
if (s.nb_streams != feed->nb_streams) {
av_freep(&s.priv_data);
goto fail;
}
for (i = 0; i < s.nb_streams; i++) {
memcpy(&feed->streams[i]->codec,
&s.streams[i]->codec, sizeof(AVCodecContext));
}
av_freep(&s.priv_data);
}
c->buffer_ptr = c->buffer;
}
return 0;
fail:
c->stream->feed_opened = 0;
close(c->feed_fd);
return -1;
}
/* return the stream number in the feed */
int add_av_stream(FFStream *feed,
AVStream *st)
{
AVStream *fst;
AVCodecContext *av, *av1;
int i;
av = &st->codec;
for(i=0;i<feed->nb_streams;i++) {
st = feed->streams[i];
av1 = &st->codec;
if (av1->codec_id == av->codec_id &&
av1->codec_type == av->codec_type &&
av1->bit_rate == av->bit_rate) {
switch(av->codec_type) {
case CODEC_TYPE_AUDIO:
if (av1->channels == av->channels &&
av1->sample_rate == av->sample_rate)
goto found;
break;
case CODEC_TYPE_VIDEO:
if (av1->width == av->width &&
av1->height == av->height &&
av1->frame_rate == av->frame_rate &&
av1->gop_size == av->gop_size)
goto found;
break;
default:
av_abort();
}
}
}
fst = av_mallocz(sizeof(AVStream));
if (!fst)
return -1;
fst->priv_data = av_mallocz(sizeof(FeedData));
memcpy(&fst->codec, av, sizeof(AVCodecContext));
feed->streams[feed->nb_streams++] = fst;
return feed->nb_streams - 1;
found:
return i;
}
/* compute the needed AVStream for each feed */
void build_feed_streams(void)
{
FFStream *stream, *feed;
int i;
/* gather all streams */
for(stream = first_stream; stream != NULL; stream = stream->next) {
feed = stream->feed;
if (feed) {
if (!stream->is_feed) {
for(i=0;i<stream->nb_streams;i++) {
stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]);
}
}
}
}
/* gather all streams */
for(stream = first_stream; stream != NULL; stream = stream->next) {
feed = stream->feed;
if (feed) {
if (stream->is_feed) {
for(i=0;i<stream->nb_streams;i++) {
stream->feed_streams[i] = i;
}
}
}
}
/* create feed files if needed */
for(feed = first_feed; feed != NULL; feed = feed->next_feed) {
int fd;
if (!url_exist(feed->feed_filename)) {
AVFormatContext s1, *s = &s1;
/* only write the header of the ffm file */
if (url_fopen(&s->pb, feed->feed_filename, URL_WRONLY) < 0) {
fprintf(stderr, "Could not open output feed file '%s'\n",
feed->feed_filename);
exit(1);
}
s->oformat = feed->fmt;
s->nb_streams = feed->nb_streams;
for(i=0;i<s->nb_streams;i++) {
AVStream *st;
st = feed->streams[i];
s->streams[i] = st;
}
av_write_header(s);
/* XXX: need better api */
av_freep(&s->priv_data);
url_fclose(&s->pb);
}
/* get feed size and write index */
fd = open(feed->feed_filename, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "Could not open output feed file '%s'\n",
feed->feed_filename);
exit(1);
}
feed->feed_write_index = ffm_read_write_index(fd);
feed->feed_size = lseek(fd, 0, SEEK_END);
/* ensure that we do not wrap before the end of file */
if (feed->feed_max_size < feed->feed_size)
feed->feed_max_size = feed->feed_size;
close(fd);
}
}
static void get_arg(char *buf, int buf_size, const char **pp)
{
const char *p;
char *q;
int quote;
p = *pp;
while (isspace(*p)) p++;
q = buf;
quote = 0;
if (*p == '\"' || *p == '\'')
quote = *p++;
for(;;) {
if (quote) {
if (*p == quote)
break;
} else {
if (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;
}
/* add a codec and set the default parameters */
void add_codec(FFStream *stream, AVCodecContext *av)
{
AVStream *st;
/* compute default parameters */
switch(av->codec_type) {
case CODEC_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 CODEC_TYPE_VIDEO:
if (av->bit_rate == 0)
av->bit_rate = 64000;
if (av->frame_rate == 0)
av->frame_rate = 5 * FRAME_RATE_BASE;
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 = av->bit_rate / 4;
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;
break;
default:
av_abort();
}
st = av_mallocz(sizeof(AVStream));
if (!st)
return;
stream->streams[stream->nb_streams++] = st;
memcpy(&st->codec, av, sizeof(AVCodecContext));
}
int opt_audio_codec(const char *arg)
{
AVCodec *p;
p = first_avcodec;
while (p) {
if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_AUDIO)
break;
p = p->next;
}
if (p == NULL) {
return CODEC_ID_NONE;
}
return p->id;
}
int opt_video_codec(const char *arg)
{
AVCodec *p;
p = first_avcodec;
while (p) {
if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_VIDEO)
break;
p = p->next;
}
if (p == NULL) {
return CODEC_ID_NONE;
}
return p->id;
}
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, *redirect;
FFStream **last_feed, *feed;
AVCodecContext audio_enc, video_enc;
int audio_id, video_id;
f = fopen(filename, "r");
if (!f) {
perror(filename);
return -1;
}
errors = 0;
line_num = 0;
first_stream = NULL;
last_stream = &first_stream;
first_feed = NULL;
last_feed = &first_feed;
stream = NULL;
feed = NULL;
redirect = NULL;
audio_id = CODEC_ID_NONE;
video_id = CODEC_ID_NONE;
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, "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, "MaxBandwidth")) {
get_arg(arg, sizeof(arg), &p);
val = atoi(arg);
if (val < 10 || val > 100000) {
fprintf(stderr, "%s:%d: Invalid MaxBandwidth: %s\n",
filename, line_num, arg);
errors++;
} else {
nb_max_bandwidth = val;
}
} else if (!strcasecmp(cmd, "CustomLog")) {
get_arg(logfilename, sizeof(logfilename), &p);
} else if (!strcasecmp(cmd, "<Feed")) {
/*********************************************/
/* Feed related options */
char *q;
if (stream || feed) {
fprintf(stderr, "%s:%d: Already in a tag\n",
filename, line_num);
} else {
feed = av_mallocz(sizeof(FFStream));
/* add in stream list */
*last_stream = feed;
last_stream = &feed->next;
/* add in feed list */
*last_feed = feed;
last_feed = &feed->next_feed;
get_arg(feed->filename, sizeof(feed->filename), &p);
q = strrchr(feed->filename, '>');
if (*q)
*q = '\0';
feed->fmt = guess_format("ffm", NULL, NULL);
/* defaut 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 :-) */
}
} else if (!strcasecmp(cmd, "Launch")) {
if (feed) {
int i;
feed->child_argv = (char **) av_mallocz(64 * sizeof(char *));
feed->child_argv[0] = av_malloc(7);
strcpy(feed->child_argv[0], "ffmpeg");
for (i = 1; i < 62; i++) {
char argbuf[256];
get_arg(argbuf, sizeof(argbuf), &p);
if (!argbuf[0])
break;
feed->child_argv[i] = av_malloc(strlen(argbuf + 1));
strcpy(feed->child_argv[i], argbuf);
}
feed->child_argv[i] = av_malloc(30 + strlen(feed->filename));
snprintf(feed->child_argv[i], 256, "http://127.0.0.1:%d/%s",
ntohs(my_addr.sin_port), feed->filename);
}
} else if (!strcasecmp(cmd, "File")) {
if (feed) {
get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
} else if (stream) {
get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
}
} else if (!strcasecmp(cmd, "FileMaxSize")) {
if (feed) {
const char *p1;
double fsize;
get_arg(arg, sizeof(arg), &p);
p1 = arg;
fsize = strtod(p1, (char **)&p1);
switch(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)fsize;
}
} else if (!strcasecmp(cmd, "</Feed>")) {
if (!feed) {
fprintf(stderr, "%s:%d: No corresponding <Feed> for </Feed>\n",
filename, line_num);
errors++;
} else {
/* Make sure that we start out clean */
if (unlink(feed->feed_filename) < 0
&& errno != ENOENT) {
fprintf(stderr, "%s:%d: Unable to clean old feed file '%s': %s\n",
filename, line_num, feed->feed_filename, strerror(errno));
errors++;
}
}
feed = NULL;
} else if (!strcasecmp(cmd, "<Stream")) {
/*********************************************/
/* Stream related options */
char *q;
if (stream || feed) {
fprintf(stderr, "%s:%d: Already in a tag\n",
filename, line_num);
} else {
stream = av_mallocz(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(AVCodecContext));
memset(&video_enc, 0, sizeof(AVCodecContext));
audio_id = CODEC_ID_NONE;
video_id = CODEC_ID_NONE;
if (stream->fmt) {
audio_id = stream->fmt->audio_codec;
video_id = stream->fmt->video_codec;
}
}
} else if (!strcasecmp(cmd, "Feed")) {
get_arg(arg, sizeof(arg), &p);
if (stream) {
FFStream *sfeed;
sfeed = first_feed;
while (sfeed != NULL) {
if (!strcmp(sfeed->filename, arg))
break;
sfeed = sfeed->next_feed;
}
if (!sfeed) {
fprintf(stderr, "%s:%d: feed '%s' not defined\n",
filename, line_num, arg);
} else {
stream->feed = sfeed;
}
}
} else if (!strcasecmp(cmd, "Format")) {
get_arg(arg, sizeof(arg), &p);
if (!strcmp(arg, "status")) {
stream->stream_type = STREAM_TYPE_STATUS;
stream->fmt = NULL;
} else {
stream->stream_type = STREAM_TYPE_LIVE;
/* jpeg cannot be used here, so use single frame jpeg */
if (!strcmp(arg, "jpeg"))
strcpy(arg, "singlejpeg");
stream->fmt = guess_format(arg, NULL, NULL);
if (!stream->fmt) {
fprintf(stderr, "%s:%d: Unknown Format: %s\n",
filename, line_num, arg);
errors++;
}
}
if (stream->fmt) {
audio_id = stream->fmt->audio_codec;
video_id = stream->fmt->video_codec;
}
} else if (!strcasecmp(cmd, "FaviconURL")) {
if (stream && stream->stream_type == STREAM_TYPE_STATUS) {
get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
} else {
fprintf(stderr, "%s:%d: FaviconURL only permitted for status streams\n",
filename, line_num);
errors++;
}
} else if (!strcasecmp(cmd, "Author")) {
if (stream) {
get_arg(stream->author, sizeof(stream->author), &p);
}
} else if (!strcasecmp(cmd, "Comment")) {
if (stream) {
get_arg(stream->comment, sizeof(stream->comment), &p);
}
} else if (!strcasecmp(cmd, "Copyright")) {
if (stream) {
get_arg(stream->copyright, sizeof(stream->copyright), &p);
}
} else if (!strcasecmp(cmd, "Title")) {
if (stream) {
get_arg(stream->title, sizeof(stream->title), &p);
}
} else if (!strcasecmp(cmd, "Preroll")) {
get_arg(arg, sizeof(arg), &p);
if (stream) {
stream->prebuffer = atoi(arg) * 1000;
}
} else if (!strcasecmp(cmd, "StartSendOnKey")) {
if (stream) {
stream->send_on_key = 1;
}
} else if (!strcasecmp(cmd, "AudioCodec")) {
get_arg(arg, sizeof(arg), &p);
audio_id = opt_audio_codec(arg);
if (audio_id == CODEC_ID_NONE) {
fprintf(stderr, "%s:%d: Unknown AudioCodec: %s\n",
filename, line_num, arg);
errors++;
}
} else if (!strcasecmp(cmd, "VideoCodec")) {
get_arg(arg, sizeof(arg), &p);
video_id = opt_video_codec(arg);
if (video_id == CODEC_ID_NONE) {
fprintf(stderr, "%s:%d: Unknown VideoCodec: %s\n",
filename, line_num, arg);
errors++;
}
} else if (!strcasecmp(cmd, "MaxTime")) {
get_arg(arg, sizeof(arg), &p);
if (stream) {
stream->max_time = atoi(arg) * 1000;
}
} 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.sample_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, "VideoSize")) {
get_arg(arg, sizeof(arg), &p);
if (stream) {
parse_image_size(&video_enc.width, &video_enc.height, arg);
if ((video_enc.width % 16) != 0 ||
(video_enc.height % 16) != 0) {
fprintf(stderr, "%s:%d: Image size must be a multiple of 16\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "VideoFrameRate")) {
get_arg(arg, sizeof(arg), &p);
if (stream) {
video_enc.frame_rate = (int)(strtod(arg, NULL) * FRAME_RATE_BASE);
}
} 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, "VideoHighQuality")) {
if (stream) {
video_enc.flags |= CODEC_FLAG_HQ;
}
} else if (!strcasecmp(cmd, "VideoQDiff")) {
if (stream) {
video_enc.max_qdiff = atoi(arg);
if (video_enc.max_qdiff < 1 || video_enc.max_qdiff > 31) {
fprintf(stderr, "%s:%d: VideoQDiff out of range\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "VideoQMax")) {
if (stream) {
video_enc.qmax = atoi(arg);
if (video_enc.qmax < 1 || video_enc.qmax > 31) {
fprintf(stderr, "%s:%d: VideoQMax out of range\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "VideoQMin")) {
if (stream) {
video_enc.qmin = atoi(arg);
if (video_enc.qmin < 1 || video_enc.qmin > 31) {
fprintf(stderr, "%s:%d: VideoQMin out of range\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "NoVideo")) {
video_id = CODEC_ID_NONE;
} else if (!strcasecmp(cmd, "NoAudio")) {
audio_id = CODEC_ID_NONE;
} else if (!strcasecmp(cmd, "</Stream>")) {
if (!stream) {
fprintf(stderr, "%s:%d: No corresponding <Stream> for </Stream>\n",
filename, line_num);
errors++;
}
if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm") != 0) {
if (audio_id != CODEC_ID_NONE) {
audio_enc.codec_type = CODEC_TYPE_AUDIO;
audio_enc.codec_id = audio_id;
add_codec(stream, &audio_enc);
}
if (video_id != CODEC_ID_NONE) {
video_enc.codec_type = CODEC_TYPE_VIDEO;
video_enc.codec_id = video_id;
add_codec(stream, &video_enc);
}
}
stream = NULL;
} else if (!strcasecmp(cmd, "<Redirect")) {
/*********************************************/
char *q;
if (stream || feed || redirect) {
fprintf(stderr, "%s:%d: Already in a tag\n",
filename, line_num);
errors++;
} else {
redirect = av_mallocz(sizeof(FFStream));
*last_stream = redirect;
last_stream = &redirect->next;
get_arg(redirect->filename, sizeof(redirect->filename), &p);
q = strrchr(redirect->filename, '>');
if (*q)
*q = '\0';
redirect->stream_type = STREAM_TYPE_REDIRECT;
}
} else if (!strcasecmp(cmd, "URL")) {
if (redirect) {
get_arg(redirect->feed_filename, sizeof(redirect->feed_filename), &p);
}
} else if (!strcasecmp(cmd, "</Redirect>")) {
if (!redirect) {
fprintf(stderr, "%s:%d: No corresponding <Redirect> for </Redirect>\n",
filename, line_num);
errors++;
}
if (!redirect->feed_filename[0]) {
fprintf(stderr, "%s:%d: No URL found for <Redirect>\n",
filename, line_num);
errors++;
}
redirect = 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;
}
#if 0
static void write_packet(FFCodec *ffenc,
UINT8 *buf, int size)
{
PacketHeader hdr;
AVCodecContext *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);
}
#endif
void help(void)
{
printf("ffserver version " FFMPEG_VERSION ", Copyright (c) 2000, 2001, 2002 Fabrice Bellard\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 " FFMPEG_VERSION "\n"
"Copyright (c) 2000, 2001, 2002 Fabrice Bellard\n"
"This library is free software; you can redistribute it and/or\n"
"modify it under the terms of the GNU Lesser General Public\n"
"License as published by the Free Software Foundation; either\n"
"version 2 of the License, or (at your option) any later version.\n"
"\n"
"This library 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 GNU\n"
"Lesser General Public License for more details.\n"
"\n"
"You should have received a copy of the GNU Lesser General Public\n"
"License along with this library; if not, write to the Free Software\n"
"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\n"
);
}
static void handle_child_exit(int sig)
{
pid_t pid;
int status;
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
FFStream *feed;
for (feed = first_feed; feed; feed = feed->next) {
if (feed->pid == pid) {
int uptime = time(0) - feed->pid_start;
feed->pid = 0;
fprintf(stderr, "%s: Pid %d exited with status %d after %d seconds\n", feed->filename, pid, status, uptime);
if (uptime < 30) {
/* Turn off any more restarts */
feed->child_argv = 0;
}
}
}
}
need_to_start_children = 1;
}
int main(int argc, char **argv)
{
const char *config_filename;
int c;
struct sigaction sigact;
register_all();
config_filename = "/etc/ffserver.conf";
my_program_name = argv[0];
for(;;) {
c = getopt_long_only(argc, argv, "ndLh?f:", NULL, NULL);
if (c == -1)
break;
switch(c) {
case 'L':
licence();
exit(1);
case '?':
case 'h':
help();
exit(1);
case 'n':
no_launch = 1;
break;
case 'd':
ffserver_debug = 1;
break;
case 'f':
config_filename = optarg;
break;
default:
exit(2);
}
}
putenv("http_proxy"); /* Kill the http_proxy */
/* 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;
nb_max_bandwidth = 1000;
first_stream = NULL;
logfilename[0] = '\0';
memset(&sigact, 0, sizeof(sigact));
sigact.sa_handler = handle_child_exit;
sigact.sa_flags = SA_NOCLDSTOP | SA_RESTART;
sigaction(SIGCHLD, &sigact, 0);
if (parse_ffconfig(config_filename) < 0) {
fprintf(stderr, "Incorrect config file - exiting.\n");
exit(1);
}
build_feed_streams();
/* signal init */
signal(SIGPIPE, SIG_IGN);
/* open log file if needed */
if (logfilename[0] != '\0') {
if (!strcmp(logfilename, "-"))
logfile = stdout;
else
logfile = fopen(logfilename, "w");
}
if (http_server(my_addr) < 0) {
fprintf(stderr, "Could not start http server\n");
exit(1);
}
return 0;
}
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