0,0 → 1,4744 |
/* |
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
/** |
* @file |
* multiple format streaming server based on the FFmpeg libraries |
*/ |
|
#include "config.h" |
#if !HAVE_CLOSESOCKET |
#define closesocket close |
#endif |
#include <string.h> |
#include <stdlib.h> |
#include <stdio.h> |
#include "libavformat/avformat.h" |
// FIXME those are internal headers, ffserver _really_ shouldn't use them |
#include "libavformat/ffm.h" |
#include "libavformat/network.h" |
#include "libavformat/os_support.h" |
#include "libavformat/rtpdec.h" |
#include "libavformat/rtpproto.h" |
#include "libavformat/rtsp.h" |
#include "libavformat/avio_internal.h" |
#include "libavformat/internal.h" |
#include "libavformat/url.h" |
|
#include "libavutil/avassert.h" |
#include "libavutil/avstring.h" |
#include "libavutil/lfg.h" |
#include "libavutil/dict.h" |
#include "libavutil/intreadwrite.h" |
#include "libavutil/mathematics.h" |
#include "libavutil/pixdesc.h" |
#include "libavutil/random_seed.h" |
#include "libavutil/parseutils.h" |
#include "libavutil/opt.h" |
#include "libavutil/time.h" |
|
#include <stdarg.h> |
#include <unistd.h> |
#include <fcntl.h> |
#include <sys/ioctl.h> |
#if HAVE_POLL_H |
#include <poll.h> |
#endif |
#include <errno.h> |
#include <time.h> |
#include <sys/wait.h> |
#include <signal.h> |
|
#include "cmdutils.h" |
|
const char program_name[] = "ffserver"; |
const int program_birth_year = 2000; |
|
static const OptionDef options[]; |
|
enum HTTPState { |
HTTPSTATE_WAIT_REQUEST, |
HTTPSTATE_SEND_HEADER, |
HTTPSTATE_SEND_DATA_HEADER, |
HTTPSTATE_SEND_DATA, /* sending TCP or UDP data */ |
HTTPSTATE_SEND_DATA_TRAILER, |
HTTPSTATE_RECEIVE_DATA, |
HTTPSTATE_WAIT_FEED, /* wait for data from the feed */ |
HTTPSTATE_READY, |
|
RTSPSTATE_WAIT_REQUEST, |
RTSPSTATE_SEND_REPLY, |
RTSPSTATE_SEND_PACKET, |
}; |
|
static const char *http_state[] = { |
"HTTP_WAIT_REQUEST", |
"HTTP_SEND_HEADER", |
|
"SEND_DATA_HEADER", |
"SEND_DATA", |
"SEND_DATA_TRAILER", |
"RECEIVE_DATA", |
"WAIT_FEED", |
"READY", |
|
"RTSP_WAIT_REQUEST", |
"RTSP_SEND_REPLY", |
"RTSP_SEND_PACKET", |
}; |
|
#define MAX_STREAMS 20 |
|
#define IOBUFFER_INIT_SIZE 8192 |
|
/* timeouts are in ms */ |
#define HTTP_REQUEST_TIMEOUT (15 * 1000) |
#define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000) |
|
#define SYNC_TIMEOUT (10 * 1000) |
|
typedef struct RTSPActionServerSetup { |
uint32_t ipaddr; |
char transport_option[512]; |
} RTSPActionServerSetup; |
|
typedef struct { |
int64_t count1, count2; |
int64_t 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 */ |
int64_t timeout; |
uint8_t *buffer_ptr, *buffer_end; |
int http_error; |
int post; |
int chunked_encoding; |
int chunk_size; /* 0 if it needs to be read */ |
struct HTTPContext *next; |
int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */ |
int64_t data_count; |
/* feed input */ |
int feed_fd; |
/* input format handling */ |
AVFormatContext *fmt_in; |
int64_t start_time; /* In milliseconds - this wraps fairly often */ |
int64_t first_pts; /* initial pts value */ |
int64_t cur_pts; /* current pts value from the stream in us */ |
int64_t cur_frame_duration; /* duration of the current frame in us */ |
int cur_frame_bytes; /* output frame size, needed to compute |
the time at which we send each |
packet */ |
int pts_stream_index; /* stream we choose as clock reference */ |
int64_t cur_clock; /* current clock reference value in us */ |
/* 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; /* instance of FFStream for one user */ |
int last_packet_sent; /* true if last data packet was sent */ |
int suppress_log; |
DataRateData datarate; |
int wmp_client_id; |
char protocol[16]; |
char method[16]; |
char url[128]; |
int buffer_size; |
uint8_t *buffer; |
int is_packetized; /* if true, the stream is packetized */ |
int packet_stream_index; /* current stream for output in state machine */ |
|
/* RTSP state specific */ |
uint8_t *pb_buffer; /* XXX: use that in all the code */ |
AVIOContext *pb; |
int seq; /* RTSP sequence number */ |
|
/* RTP state specific */ |
enum RTSPLowerTransport rtp_protocol; |
char session_id[32]; /* session id */ |
AVFormatContext *rtp_ctx[MAX_STREAMS]; |
|
/* RTP/UDP specific */ |
URLContext *rtp_handles[MAX_STREAMS]; |
|
/* RTP/TCP specific */ |
struct HTTPContext *rtsp_c; |
uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end; |
} HTTPContext; |
|
/* each generated stream is described here */ |
enum StreamType { |
STREAM_TYPE_LIVE, |
STREAM_TYPE_STATUS, |
STREAM_TYPE_REDIRECT, |
}; |
|
enum IPAddressAction { |
IP_ALLOW = 1, |
IP_DENY, |
}; |
|
typedef struct IPAddressACL { |
struct IPAddressACL *next; |
enum IPAddressAction action; |
/* These are in host order */ |
struct in_addr first; |
struct in_addr last; |
} IPAddressACL; |
|
/* description of each stream of the ffserver.conf file */ |
typedef struct FFStream { |
enum StreamType stream_type; |
char filename[1024]; /* stream filename */ |
struct FFStream *feed; /* feed we are using (can be null if |
coming from file) */ |
AVDictionary *in_opts; /* input parameters */ |
AVInputFormat *ifmt; /* if non NULL, force input format */ |
AVOutputFormat *fmt; |
IPAddressACL *acl; |
char dynamic_acl[1024]; |
int nb_streams; |
int prebuffer; /* Number of millseconds early to start */ |
int64_t 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; |
unsigned bandwidth; /* bandwidth, in kbits/s */ |
/* RTSP options */ |
char *rtsp_option; |
/* multicast specific */ |
int is_multicast; |
struct in_addr multicast_ip; |
int multicast_port; /* first port used for multicast */ |
int multicast_ttl; |
int loop; /* if true, send the stream in loops (only meaningful if file) */ |
|
/* feed specific */ |
int feed_opened; /* true if someone is writing to the feed */ |
int is_feed; /* true if it is a feed */ |
int readonly; /* True if writing is prohibited to the file */ |
int truncate; /* True if feeder connection truncate the feed file */ |
int conns_served; |
int64_t bytes_served; |
int64_t feed_max_size; /* maximum storage size, zero means unlimited */ |
int64_t feed_write_index; /* current write position in feed (it wraps around) */ |
int64_t feed_size; /* current size of feed */ |
struct FFStream *next_feed; |
} FFStream; |
|
typedef struct FeedData { |
long long data_count; |
float avg_frame_size; /* frame size averaged over last frames with exponential mean */ |
} FeedData; |
|
static struct sockaddr_in my_http_addr; |
static struct sockaddr_in my_rtsp_addr; |
|
static char logfilename[1024]; |
static HTTPContext *first_http_ctx; |
static FFStream *first_feed; /* contains only feeds */ |
static FFStream *first_stream; /* contains all streams, including feeds */ |
|
static void new_connection(int server_fd, int is_rtsp); |
static void close_connection(HTTPContext *c); |
|
/* HTTP handling */ |
static int handle_connection(HTTPContext *c); |
static int http_parse_request(HTTPContext *c); |
static int http_send_data(HTTPContext *c); |
static void compute_status(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); |
|
/* RTSP handling */ |
static int rtsp_parse_request(HTTPContext *c); |
static void rtsp_cmd_describe(HTTPContext *c, const char *url); |
static void rtsp_cmd_options(HTTPContext *c, const char *url); |
static void rtsp_cmd_setup(HTTPContext *c, const char *url, RTSPMessageHeader *h); |
static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h); |
static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h); |
static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPMessageHeader *h); |
|
/* SDP handling */ |
static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer, |
struct in_addr my_ip); |
|
/* RTP handling */ |
static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr, |
FFStream *stream, const char *session_id, |
enum RTSPLowerTransport rtp_protocol); |
static int rtp_new_av_stream(HTTPContext *c, |
int stream_index, struct sockaddr_in *dest_addr, |
HTTPContext *rtsp_c); |
|
static const char *my_program_name; |
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static const char *config_filename; |
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static int ffserver_debug; |
static int no_launch; |
static int need_to_start_children; |
|
/* maximum number of simultaneous HTTP connections */ |
static unsigned int nb_max_http_connections = 2000; |
static unsigned int nb_max_connections = 5; |
static unsigned int nb_connections; |
|
static uint64_t max_bandwidth = 1000; |
static uint64_t current_bandwidth; |
|
static int64_t cur_time; // Making this global saves on passing it around everywhere |
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static AVLFG random_state; |
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static FILE *logfile = NULL; |
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static void htmlstrip(char *s) { |
while (s && *s) { |
s += strspn(s, "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,. "); |
if (*s) |
*s++ = '?'; |
} |
} |
|
static int64_t ffm_read_write_index(int fd) |
{ |
uint8_t buf[8]; |
|
if (lseek(fd, 8, SEEK_SET) < 0) |
return AVERROR(EIO); |
if (read(fd, buf, 8) != 8) |
return AVERROR(EIO); |
return AV_RB64(buf); |
} |
|
static int ffm_write_write_index(int fd, int64_t pos) |
{ |
uint8_t buf[8]; |
int i; |
|
for(i=0;i<8;i++) |
buf[i] = (pos >> (56 - i * 8)) & 0xff; |
if (lseek(fd, 8, SEEK_SET) < 0) |
return AVERROR(EIO); |
if (write(fd, buf, 8) != 8) |
return AVERROR(EIO); |
return 8; |
} |
|
static void ffm_set_write_index(AVFormatContext *s, int64_t pos, |
int64_t file_size) |
{ |
FFMContext *ffm = s->priv_data; |
ffm->write_index = pos; |
ffm->file_size = file_size; |
} |
|
/* FIXME: make ffserver work with IPv6 */ |
/* resolve host with also IP address parsing */ |
static int resolve_host(struct in_addr *sin_addr, const char *hostname) |
{ |
|
if (!ff_inet_aton(hostname, sin_addr)) { |
#if HAVE_GETADDRINFO |
struct addrinfo *ai, *cur; |
struct addrinfo hints = { 0 }; |
hints.ai_family = AF_INET; |
if (getaddrinfo(hostname, NULL, &hints, &ai)) |
return -1; |
/* getaddrinfo returns a linked list of addrinfo structs. |
* Even if we set ai_family = AF_INET above, make sure |
* that the returned one actually is of the correct type. */ |
for (cur = ai; cur; cur = cur->ai_next) { |
if (cur->ai_family == AF_INET) { |
*sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr; |
freeaddrinfo(ai); |
return 0; |
} |
} |
freeaddrinfo(ai); |
return -1; |
#else |
struct hostent *hp; |
hp = gethostbyname(hostname); |
if (!hp) |
return -1; |
memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr)); |
#endif |
} |
return 0; |
} |
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static char *ctime1(char *buf2, int buf_size) |
{ |
time_t ti; |
char *p; |
|
ti = time(NULL); |
p = ctime(&ti); |
av_strlcpy(buf2, p, buf_size); |
p = buf2 + strlen(p) - 1; |
if (*p == '\n') |
*p = '\0'; |
return buf2; |
} |
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static void http_vlog(const char *fmt, va_list vargs) |
{ |
static int print_prefix = 1; |
if (logfile) { |
if (print_prefix) { |
char buf[32]; |
ctime1(buf, sizeof(buf)); |
fprintf(logfile, "%s ", buf); |
} |
print_prefix = strstr(fmt, "\n") != NULL; |
vfprintf(logfile, fmt, vargs); |
fflush(logfile); |
} |
} |
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#ifdef __GNUC__ |
__attribute__ ((format (printf, 1, 2))) |
#endif |
static void http_log(const char *fmt, ...) |
{ |
va_list vargs; |
va_start(vargs, fmt); |
http_vlog(fmt, vargs); |
va_end(vargs); |
} |
|
static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs) |
{ |
static int print_prefix = 1; |
AVClass *avc = ptr ? *(AVClass**)ptr : NULL; |
if (level > av_log_get_level()) |
return; |
if (print_prefix && avc) |
http_log("[%s @ %p]", avc->item_name(ptr), ptr); |
print_prefix = strstr(fmt, "\n") != NULL; |
http_vlog(fmt, vargs); |
} |
|
static void log_connection(HTTPContext *c) |
{ |
if (c->suppress_log) |
return; |
|
http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n", |
inet_ntoa(c->from_addr.sin_addr), c->method, c->url, |
c->protocol, (c->http_error ? c->http_error : 200), c->data_count); |
} |
|
static void update_datarate(DataRateData *drd, int64_t 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_t 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) { |
http_log("Unable to create children\n"); |
exit(1); |
} |
if (!feed->pid) { |
/* In child */ |
char pathname[1024]; |
char *slash; |
int i; |
|
av_strlcpy(pathname, my_program_name, sizeof(pathname)); |
|
slash = strrchr(pathname, '/'); |
if (!slash) |
slash = pathname; |
else |
slash++; |
strcpy(slash, "ffmpeg"); |
|
http_log("Launch command line: "); |
http_log("%s ", pathname); |
for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++) |
http_log("%s ", feed->child_argv[i]); |
http_log("\n"); |
|
for (i = 3; i < 256; i++) |
close(i); |
|
if (!ffserver_debug) { |
if (!freopen("/dev/null", "r", stdin)) |
http_log("failed to redirect STDIN to /dev/null\n;"); |
if (!freopen("/dev/null", "w", stdout)) |
http_log("failed to redirect STDOUT to /dev/null\n;"); |
if (!freopen("/dev/null", "w", stderr)) |
http_log("failed to redirect STDERR to /dev/null\n;"); |
} |
|
signal(SIGPIPE, SIG_DFL); |
|
execvp(pathname, feed->child_argv); |
|
_exit(1); |
} |
} |
} |
} |
|
/* open a listening socket */ |
static int socket_open_listen(struct sockaddr_in *my_addr) |
{ |
int server_fd, tmp; |
|
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)); |
|
my_addr->sin_family = AF_INET; |
if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) { |
char bindmsg[32]; |
snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port)); |
perror (bindmsg); |
closesocket(server_fd); |
return -1; |
} |
|
if (listen (server_fd, 5) < 0) { |
perror ("listen"); |
closesocket(server_fd); |
return -1; |
} |
ff_socket_nonblock(server_fd, 1); |
|
return server_fd; |
} |
|
/* start all multicast streams */ |
static void start_multicast(void) |
{ |
FFStream *stream; |
char session_id[32]; |
HTTPContext *rtp_c; |
struct sockaddr_in dest_addr = {0}; |
int default_port, stream_index; |
|
default_port = 6000; |
for(stream = first_stream; stream != NULL; stream = stream->next) { |
if (stream->is_multicast) { |
unsigned random0 = av_lfg_get(&random_state); |
unsigned random1 = av_lfg_get(&random_state); |
/* open the RTP connection */ |
snprintf(session_id, sizeof(session_id), "%08x%08x", |
random0, random1); |
|
/* choose a port if none given */ |
if (stream->multicast_port == 0) { |
stream->multicast_port = default_port; |
default_port += 100; |
} |
|
dest_addr.sin_family = AF_INET; |
dest_addr.sin_addr = stream->multicast_ip; |
dest_addr.sin_port = htons(stream->multicast_port); |
|
rtp_c = rtp_new_connection(&dest_addr, stream, session_id, |
RTSP_LOWER_TRANSPORT_UDP_MULTICAST); |
if (!rtp_c) |
continue; |
|
if (open_input_stream(rtp_c, "") < 0) { |
http_log("Could not open input stream for stream '%s'\n", |
stream->filename); |
continue; |
} |
|
/* open each RTP stream */ |
for(stream_index = 0; stream_index < stream->nb_streams; |
stream_index++) { |
dest_addr.sin_port = htons(stream->multicast_port + |
2 * stream_index); |
if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) { |
http_log("Could not open output stream '%s/streamid=%d'\n", |
stream->filename, stream_index); |
exit(1); |
} |
} |
|
/* change state to send data */ |
rtp_c->state = HTTPSTATE_SEND_DATA; |
} |
} |
} |
|
/* main loop of the http server */ |
static int http_server(void) |
{ |
int server_fd = 0, rtsp_server_fd = 0; |
int ret, delay, delay1; |
struct pollfd *poll_table, *poll_entry; |
HTTPContext *c, *c_next; |
|
if(!(poll_table = av_mallocz((nb_max_http_connections + 2)*sizeof(*poll_table)))) { |
http_log("Impossible to allocate a poll table handling %d connections.\n", nb_max_http_connections); |
return -1; |
} |
|
if (my_http_addr.sin_port) { |
server_fd = socket_open_listen(&my_http_addr); |
if (server_fd < 0) |
return -1; |
} |
|
if (my_rtsp_addr.sin_port) { |
rtsp_server_fd = socket_open_listen(&my_rtsp_addr); |
if (rtsp_server_fd < 0) |
return -1; |
} |
|
if (!rtsp_server_fd && !server_fd) { |
http_log("HTTP and RTSP disabled.\n"); |
return -1; |
} |
|
http_log("FFserver started.\n"); |
|
start_children(first_feed); |
|
start_multicast(); |
|
for(;;) { |
poll_entry = poll_table; |
if (server_fd) { |
poll_entry->fd = server_fd; |
poll_entry->events = POLLIN; |
poll_entry++; |
} |
if (rtsp_server_fd) { |
poll_entry->fd = rtsp_server_fd; |
poll_entry->events = POLLIN; |
poll_entry++; |
} |
|
/* wait for events on each HTTP handle */ |
c = first_http_ctx; |
delay = 1000; |
while (c != NULL) { |
int fd; |
fd = c->fd; |
switch(c->state) { |
case HTTPSTATE_SEND_HEADER: |
case RTSPSTATE_SEND_REPLY: |
case RTSPSTATE_SEND_PACKET: |
c->poll_entry = poll_entry; |
poll_entry->fd = fd; |
poll_entry->events = POLLOUT; |
poll_entry++; |
break; |
case HTTPSTATE_SEND_DATA_HEADER: |
case HTTPSTATE_SEND_DATA: |
case HTTPSTATE_SEND_DATA_TRAILER: |
if (!c->is_packetized) { |
/* for TCP, we output as much as we can (may need to put a limit) */ |
c->poll_entry = poll_entry; |
poll_entry->fd = fd; |
poll_entry->events = POLLOUT; |
poll_entry++; |
} else { |
/* when ffserver is doing the timing, we work by |
looking at which packet need to be sent every |
10 ms */ |
delay1 = 10; /* one tick wait XXX: 10 ms assumed */ |
if (delay1 < delay) |
delay = delay1; |
} |
break; |
case HTTPSTATE_WAIT_REQUEST: |
case HTTPSTATE_RECEIVE_DATA: |
case HTTPSTATE_WAIT_FEED: |
case RTSPSTATE_WAIT_REQUEST: |
/* 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, delay); |
if (ret < 0 && ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) |
return -1; |
} while (ret < 0); |
|
cur_time = av_gettime() / 1000; |
|
if (need_to_start_children) { |
need_to_start_children = 0; |
start_children(first_feed); |
} |
|
/* now handle the events */ |
for(c = first_http_ctx; c != NULL; c = c_next) { |
c_next = c->next; |
if (handle_connection(c) < 0) { |
/* close and free the connection */ |
log_connection(c); |
close_connection(c); |
} |
} |
|
poll_entry = poll_table; |
if (server_fd) { |
/* new HTTP connection request ? */ |
if (poll_entry->revents & POLLIN) |
new_connection(server_fd, 0); |
poll_entry++; |
} |
if (rtsp_server_fd) { |
/* new RTSP connection request ? */ |
if (poll_entry->revents & POLLIN) |
new_connection(rtsp_server_fd, 1); |
} |
} |
} |
|
/* start waiting for a new HTTP/RTSP request */ |
static void start_wait_request(HTTPContext *c, int is_rtsp) |
{ |
c->buffer_ptr = c->buffer; |
c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */ |
|
if (is_rtsp) { |
c->timeout = cur_time + RTSP_REQUEST_TIMEOUT; |
c->state = RTSPSTATE_WAIT_REQUEST; |
} else { |
c->timeout = cur_time + HTTP_REQUEST_TIMEOUT; |
c->state = HTTPSTATE_WAIT_REQUEST; |
} |
} |
|
static void http_send_too_busy_reply(int fd) |
{ |
char buffer[400]; |
int len = snprintf(buffer, sizeof(buffer), |
"HTTP/1.0 503 Server too busy\r\n" |
"Content-type: text/html\r\n" |
"\r\n" |
"<html><head><title>Too busy</title></head><body>\r\n" |
"<p>The server is too busy to serve your request at this time.</p>\r\n" |
"<p>The number of current connections is %u, and this exceeds the limit of %u.</p>\r\n" |
"</body></html>\r\n", |
nb_connections, nb_max_connections); |
av_assert0(len < sizeof(buffer)); |
send(fd, buffer, len, 0); |
} |
|
|
static void new_connection(int server_fd, int is_rtsp) |
{ |
struct sockaddr_in from_addr; |
socklen_t len; |
int fd; |
HTTPContext *c = NULL; |
|
len = sizeof(from_addr); |
fd = accept(server_fd, (struct sockaddr *)&from_addr, |
&len); |
if (fd < 0) { |
http_log("error during accept %s\n", strerror(errno)); |
return; |
} |
ff_socket_nonblock(fd, 1); |
|
if (nb_connections >= nb_max_connections) { |
http_send_too_busy_reply(fd); |
goto fail; |
} |
|
/* add a new connection */ |
c = av_mallocz(sizeof(HTTPContext)); |
if (!c) |
goto fail; |
|
c->fd = fd; |
c->poll_entry = NULL; |
c->from_addr = from_addr; |
c->buffer_size = IOBUFFER_INIT_SIZE; |
c->buffer = av_malloc(c->buffer_size); |
if (!c->buffer) |
goto fail; |
|
c->next = first_http_ctx; |
first_http_ctx = c; |
nb_connections++; |
|
start_wait_request(c, is_rtsp); |
|
return; |
|
fail: |
if (c) { |
av_free(c->buffer); |
av_free(c); |
} |
closesocket(fd); |
} |
|
static void close_connection(HTTPContext *c) |
{ |
HTTPContext **cp, *c1; |
int i, nb_streams; |
AVFormatContext *ctx; |
URLContext *h; |
AVStream *st; |
|
/* remove connection from list */ |
cp = &first_http_ctx; |
while ((*cp) != NULL) { |
c1 = *cp; |
if (c1 == c) |
*cp = c->next; |
else |
cp = &c1->next; |
} |
|
/* remove references, if any (XXX: do it faster) */ |
for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) { |
if (c1->rtsp_c == c) |
c1->rtsp_c = NULL; |
} |
|
/* remove connection associated resources */ |
if (c->fd >= 0) |
closesocket(c->fd); |
if (c->fmt_in) { |
/* close each frame parser */ |
for(i=0;i<c->fmt_in->nb_streams;i++) { |
st = c->fmt_in->streams[i]; |
if (st->codec->codec) |
avcodec_close(st->codec); |
} |
avformat_close_input(&c->fmt_in); |
} |
|
/* free RTP output streams if any */ |
nb_streams = 0; |
if (c->stream) |
nb_streams = c->stream->nb_streams; |
|
for(i=0;i<nb_streams;i++) { |
ctx = c->rtp_ctx[i]; |
if (ctx) { |
av_write_trailer(ctx); |
av_dict_free(&ctx->metadata); |
av_free(ctx->streams[0]); |
av_free(ctx); |
} |
h = c->rtp_handles[i]; |
if (h) |
ffurl_close(h); |
} |
|
ctx = &c->fmt_ctx; |
|
if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) { |
if (ctx->oformat) { |
/* prepare header */ |
if (avio_open_dyn_buf(&ctx->pb) >= 0) { |
av_write_trailer(ctx); |
av_freep(&c->pb_buffer); |
avio_close_dyn_buf(ctx->pb, &c->pb_buffer); |
} |
} |
} |
|
for(i=0; i<ctx->nb_streams; i++) |
av_free(ctx->streams[i]); |
av_freep(&ctx->streams); |
av_freep(&ctx->priv_data); |
|
if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE) |
current_bandwidth -= c->stream->bandwidth; |
|
/* signal that there is no feed if we are the feeder socket */ |
if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) { |
c->stream->feed_opened = 0; |
close(c->feed_fd); |
} |
|
av_freep(&c->pb_buffer); |
av_freep(&c->packet_buffer); |
av_free(c->buffer); |
av_free(c); |
nb_connections--; |
} |
|
static int handle_connection(HTTPContext *c) |
{ |
int len, ret; |
|
switch(c->state) { |
case HTTPSTATE_WAIT_REQUEST: |
case RTSPSTATE_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 */ |
read_loop: |
len = recv(c->fd, c->buffer_ptr, 1, 0); |
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) |
return -1; |
} else if (len == 0) { |
return -1; |
} else { |
/* search for end of request. */ |
uint8_t *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 (c->state == HTTPSTATE_WAIT_REQUEST) { |
ret = http_parse_request(c); |
} else { |
ret = rtsp_parse_request(c); |
} |
if (ret < 0) |
return -1; |
} else if (ptr >= c->buffer_end) { |
/* request too long: cannot do anything */ |
return -1; |
} else goto read_loop; |
} |
break; |
|
case HTTPSTATE_SEND_HEADER: |
if (c->poll_entry->revents & (POLLERR | POLLHUP)) |
return -1; |
|
/* no need to write if no events */ |
if (!(c->poll_entry->revents & POLLOUT)) |
return 0; |
len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0); |
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) { |
/* error : close connection */ |
av_freep(&c->pb_buffer); |
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) { |
av_freep(&c->pb_buffer); |
/* if error, exit */ |
if (c->http_error) |
return -1; |
/* all the buffer was sent : 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: |
/* for packetized output, we consider we can always write (the |
input streams sets the speed). It may be better to verify |
that we do not rely too much on the kernel queues */ |
if (!c->is_packetized) { |
if (c->poll_entry->revents & (POLLERR | POLLHUP)) |
return -1; |
|
/* no need to read if no events */ |
if (!(c->poll_entry->revents & POLLOUT)) |
return 0; |
} |
if (http_send_data(c) < 0) |
return -1; |
/* close connection if trailer sent */ |
if (c->state == HTTPSTATE_SEND_DATA_TRAILER) |
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; |
|
case RTSPSTATE_SEND_REPLY: |
if (c->poll_entry->revents & (POLLERR | POLLHUP)) { |
av_freep(&c->pb_buffer); |
return -1; |
} |
/* no need to write if no events */ |
if (!(c->poll_entry->revents & POLLOUT)) |
return 0; |
len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0); |
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) { |
/* error : close connection */ |
av_freep(&c->pb_buffer); |
return -1; |
} |
} else { |
c->buffer_ptr += len; |
c->data_count += len; |
if (c->buffer_ptr >= c->buffer_end) { |
/* all the buffer was sent : wait for a new request */ |
av_freep(&c->pb_buffer); |
start_wait_request(c, 1); |
} |
} |
break; |
case RTSPSTATE_SEND_PACKET: |
if (c->poll_entry->revents & (POLLERR | POLLHUP)) { |
av_freep(&c->packet_buffer); |
return -1; |
} |
/* no need to write if no events */ |
if (!(c->poll_entry->revents & POLLOUT)) |
return 0; |
len = send(c->fd, c->packet_buffer_ptr, |
c->packet_buffer_end - c->packet_buffer_ptr, 0); |
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) { |
/* error : close connection */ |
av_freep(&c->packet_buffer); |
return -1; |
} |
} else { |
c->packet_buffer_ptr += len; |
if (c->packet_buffer_ptr >= c->packet_buffer_end) { |
/* all the buffer was sent : wait for a new request */ |
av_freep(&c->packet_buffer); |
c->state = RTSPSTATE_WAIT_REQUEST; |
} |
} |
break; |
case HTTPSTATE_READY: |
/* nothing to do */ |
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 (av_strncasecmp(p, "Pragma:", 7) == 0) { |
const char *q = p + 7; |
|
while (*q && *q != '\n' && av_isspace(*q)) |
q++; |
|
if (av_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' && !av_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; |
|
/* Not much we can do for a feed */ |
if (!req->feed) |
return 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; |
} |
|
/* XXX: factorize in utils.c ? */ |
/* XXX: take care with different space meaning */ |
static void skip_spaces(const char **pp) |
{ |
const char *p; |
p = *pp; |
while (*p == ' ' || *p == '\t') |
p++; |
*pp = p; |
} |
|
static void get_word(char *buf, int buf_size, const char **pp) |
{ |
const char *p; |
char *q; |
|
p = *pp; |
skip_spaces(&p); |
q = buf; |
while (!av_isspace(*p) && *p != '\0') { |
if ((q - buf) < buf_size - 1) |
*q++ = *p; |
p++; |
} |
if (buf_size > 0) |
*q = '\0'; |
*pp = p; |
} |
|
static void get_arg(char *buf, int buf_size, const char **pp) |
{ |
const char *p; |
char *q; |
int quote; |
|
p = *pp; |
while (av_isspace(*p)) p++; |
q = buf; |
quote = 0; |
if (*p == '\"' || *p == '\'') |
quote = *p++; |
for(;;) { |
if (quote) { |
if (*p == quote) |
break; |
} else { |
if (av_isspace(*p)) |
break; |
} |
if (*p == '\0') |
break; |
if ((q - buf) < buf_size - 1) |
*q++ = *p; |
p++; |
} |
*q = '\0'; |
if (quote && *p == quote) |
p++; |
*pp = p; |
} |
|
static void parse_acl_row(FFStream *stream, FFStream* feed, IPAddressACL *ext_acl, |
const char *p, const char *filename, int line_num) |
{ |
char arg[1024]; |
IPAddressACL acl; |
int errors = 0; |
|
get_arg(arg, sizeof(arg), &p); |
if (av_strcasecmp(arg, "allow") == 0) |
acl.action = IP_ALLOW; |
else if (av_strcasecmp(arg, "deny") == 0) |
acl.action = IP_DENY; |
else { |
fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n", |
filename, line_num, arg); |
errors++; |
} |
|
get_arg(arg, sizeof(arg), &p); |
|
if (resolve_host(&acl.first, arg) != 0) { |
fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n", |
filename, line_num, arg); |
errors++; |
} else |
acl.last = acl.first; |
|
get_arg(arg, sizeof(arg), &p); |
|
if (arg[0]) { |
if (resolve_host(&acl.last, arg) != 0) { |
fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n", |
filename, line_num, arg); |
errors++; |
} |
} |
|
if (!errors) { |
IPAddressACL *nacl = av_mallocz(sizeof(*nacl)); |
IPAddressACL **naclp = 0; |
|
acl.next = 0; |
*nacl = acl; |
|
if (stream) |
naclp = &stream->acl; |
else if (feed) |
naclp = &feed->acl; |
else if (ext_acl) |
naclp = &ext_acl; |
else { |
fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n", |
filename, line_num); |
errors++; |
} |
|
if (naclp) { |
while (*naclp) |
naclp = &(*naclp)->next; |
|
*naclp = nacl; |
} |
} |
} |
|
|
static IPAddressACL* parse_dynamic_acl(FFStream *stream, HTTPContext *c) |
{ |
FILE* f; |
char line[1024]; |
char cmd[1024]; |
IPAddressACL *acl = NULL; |
int line_num = 0; |
const char *p; |
|
f = fopen(stream->dynamic_acl, "r"); |
if (!f) { |
perror(stream->dynamic_acl); |
return NULL; |
} |
|
acl = av_mallocz(sizeof(IPAddressACL)); |
|
/* Build ACL */ |
for(;;) { |
if (fgets(line, sizeof(line), f) == NULL) |
break; |
line_num++; |
p = line; |
while (av_isspace(*p)) |
p++; |
if (*p == '\0' || *p == '#') |
continue; |
get_arg(cmd, sizeof(cmd), &p); |
|
if (!av_strcasecmp(cmd, "ACL")) |
parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num); |
} |
fclose(f); |
return acl; |
} |
|
|
static void free_acl_list(IPAddressACL *in_acl) |
{ |
IPAddressACL *pacl,*pacl2; |
|
pacl = in_acl; |
while(pacl) { |
pacl2 = pacl; |
pacl = pacl->next; |
av_freep(pacl2); |
} |
} |
|
static int validate_acl_list(IPAddressACL *in_acl, HTTPContext *c) |
{ |
enum IPAddressAction last_action = IP_DENY; |
IPAddressACL *acl; |
struct in_addr *src = &c->from_addr.sin_addr; |
unsigned long src_addr = src->s_addr; |
|
for (acl = in_acl; acl; acl = acl->next) { |
if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr) |
return (acl->action == IP_ALLOW) ? 1 : 0; |
last_action = acl->action; |
} |
|
/* Nothing matched, so return not the last action */ |
return (last_action == IP_DENY) ? 1 : 0; |
} |
|
static int validate_acl(FFStream *stream, HTTPContext *c) |
{ |
int ret = 0; |
IPAddressACL *acl; |
|
|
/* if stream->acl is null validate_acl_list will return 1 */ |
ret = validate_acl_list(stream->acl, c); |
|
if (stream->dynamic_acl[0]) { |
acl = parse_dynamic_acl(stream, c); |
|
ret = validate_acl_list(acl, c); |
|
free_acl_list(acl); |
} |
|
return ret; |
} |
|
/* compute the real filename of a file by matching it without its |
extensions to all the stream filenames */ |
static void compute_real_filename(char *filename, int max_size) |
{ |
char file1[1024]; |
char file2[1024]; |
char *p; |
FFStream *stream; |
|
/* compute filename by matching without the file extensions */ |
av_strlcpy(file1, filename, sizeof(file1)); |
p = strrchr(file1, '.'); |
if (p) |
*p = '\0'; |
for(stream = first_stream; stream != NULL; stream = stream->next) { |
av_strlcpy(file2, stream->filename, sizeof(file2)); |
p = strrchr(file2, '.'); |
if (p) |
*p = '\0'; |
if (!strcmp(file1, file2)) { |
av_strlcpy(filename, stream->filename, max_size); |
break; |
} |
} |
} |
|
enum RedirType { |
REDIR_NONE, |
REDIR_ASX, |
REDIR_RAM, |
REDIR_ASF, |
REDIR_RTSP, |
REDIR_SDP, |
}; |
|
/* parse http request and prepare header */ |
static int http_parse_request(HTTPContext *c) |
{ |
const char *p; |
char *p1; |
enum RedirType redir_type; |
char cmd[32]; |
char info[1024], filename[1024]; |
char url[1024], *q; |
char protocol[32]; |
char msg[1024]; |
const char *mime_type; |
FFStream *stream; |
int i; |
char ratebuf[32]; |
const char *useragent = 0; |
|
p = c->buffer; |
get_word(cmd, sizeof(cmd), &p); |
av_strlcpy(c->method, cmd, sizeof(c->method)); |
|
if (!strcmp(cmd, "GET")) |
c->post = 0; |
else if (!strcmp(cmd, "POST")) |
c->post = 1; |
else |
return -1; |
|
get_word(url, sizeof(url), &p); |
av_strlcpy(c->url, url, sizeof(c->url)); |
|
get_word(protocol, sizeof(protocol), (const char **)&p); |
if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1")) |
return -1; |
|
av_strlcpy(c->protocol, protocol, sizeof(c->protocol)); |
|
if (ffserver_debug) |
http_log("%s - - New connection: %s %s\n", inet_ntoa(c->from_addr.sin_addr), cmd, url); |
|
/* find the filename and the optional info string in the request */ |
p1 = strchr(url, '?'); |
if (p1) { |
av_strlcpy(info, p1, sizeof(info)); |
*p1 = '\0'; |
} else |
info[0] = '\0'; |
|
av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1); |
|
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) { |
if (av_strncasecmp(p, "User-Agent:", 11) == 0) { |
useragent = p + 11; |
if (*useragent && *useragent != '\n' && av_isspace(*useragent)) |
useragent++; |
break; |
} |
p = strchr(p, '\n'); |
if (!p) |
break; |
|
p++; |
} |
|
redir_type = REDIR_NONE; |
if (av_match_ext(filename, "asx")) { |
redir_type = REDIR_ASX; |
filename[strlen(filename)-1] = 'f'; |
} else if (av_match_ext(filename, "asf") && |
(!useragent || av_strncasecmp(useragent, "NSPlayer", 8) != 0)) { |
/* if this isn't WMP or lookalike, return the redirector file */ |
redir_type = REDIR_ASF; |
} else if (av_match_ext(filename, "rpm,ram")) { |
redir_type = REDIR_RAM; |
strcpy(filename + strlen(filename)-2, "m"); |
} else if (av_match_ext(filename, "rtsp")) { |
redir_type = REDIR_RTSP; |
compute_real_filename(filename, sizeof(filename) - 1); |
} else if (av_match_ext(filename, "sdp")) { |
redir_type = REDIR_SDP; |
compute_real_filename(filename, sizeof(filename) - 1); |
} |
|
// "redirect" / request to index.html |
if (!strlen(filename)) |
av_strlcpy(filename, "index.html", sizeof(filename) - 1); |
|
stream = first_stream; |
while (stream != NULL) { |
if (!strcmp(stream->filename, filename) && validate_acl(stream, c)) |
break; |
stream = stream->next; |
} |
if (stream == NULL) { |
snprintf(msg, sizeof(msg), "File '%s' not found", url); |
http_log("File '%s' not found\n", 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; |
snprintf(q, c->buffer_size, |
"HTTP/1.0 301 Moved\r\n" |
"Location: %s\r\n" |
"Content-type: text/html\r\n" |
"\r\n" |
"<html><head><title>Moved</title></head><body>\r\n" |
"You should be <a href=\"%s\">redirected</a>.\r\n" |
"</body></html>\r\n", stream->feed_filename, stream->feed_filename); |
q += strlen(q); |
/* 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 < FF_ARRAY_ELEMS(c->feed_streams); i++) { |
if (c->switch_feed_streams[i] >= 0) |
c->switch_feed_streams[i] = -1; |
} |
} |
} |
|
if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE) |
current_bandwidth += stream->bandwidth; |
|
/* If already streaming this feed, do not let start another feeder. */ |
if (stream->feed_opened) { |
snprintf(msg, sizeof(msg), "This feed is already being received."); |
http_log("Feed '%s' already being received\n", stream->feed_filename); |
goto send_error; |
} |
|
if (c->post == 0 && max_bandwidth < current_bandwidth) { |
c->http_error = 503; |
q = c->buffer; |
snprintf(q, c->buffer_size, |
"HTTP/1.0 503 Server too busy\r\n" |
"Content-type: text/html\r\n" |
"\r\n" |
"<html><head><title>Too busy</title></head><body>\r\n" |
"<p>The server is too busy to serve your request at this time.</p>\r\n" |
"<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, " |
"and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n" |
"</body></html>\r\n", current_bandwidth, max_bandwidth); |
q += strlen(q); |
/* prepare output buffer */ |
c->buffer_ptr = c->buffer; |
c->buffer_end = q; |
c->state = HTTPSTATE_SEND_HEADER; |
return 0; |
} |
|
if (redir_type != REDIR_NONE) { |
const char *hostinfo = 0; |
|
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) { |
if (av_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 (av_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; |
switch(redir_type) { |
case REDIR_ASX: |
snprintf(q, c->buffer_size, |
"HTTP/1.0 200 ASX Follows\r\n" |
"Content-type: video/x-ms-asf\r\n" |
"\r\n" |
"<ASX Version=\"3\">\r\n" |
//"<!-- Autogenerated by ffserver -->\r\n" |
"<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n" |
"</ASX>\r\n", hostbuf, filename, info); |
q += strlen(q); |
break; |
case REDIR_RAM: |
snprintf(q, c->buffer_size, |
"HTTP/1.0 200 RAM Follows\r\n" |
"Content-type: audio/x-pn-realaudio\r\n" |
"\r\n" |
"# Autogenerated by ffserver\r\n" |
"http://%s/%s%s\r\n", hostbuf, filename, info); |
q += strlen(q); |
break; |
case REDIR_ASF: |
snprintf(q, c->buffer_size, |
"HTTP/1.0 200 ASF Redirect follows\r\n" |
"Content-type: video/x-ms-asf\r\n" |
"\r\n" |
"[Reference]\r\n" |
"Ref1=http://%s/%s%s\r\n", hostbuf, filename, info); |
q += strlen(q); |
break; |
case REDIR_RTSP: |
{ |
char hostname[256], *p; |
/* extract only hostname */ |
av_strlcpy(hostname, hostbuf, sizeof(hostname)); |
p = strrchr(hostname, ':'); |
if (p) |
*p = '\0'; |
snprintf(q, c->buffer_size, |
"HTTP/1.0 200 RTSP Redirect follows\r\n" |
/* XXX: incorrect mime type ? */ |
"Content-type: application/x-rtsp\r\n" |
"\r\n" |
"rtsp://%s:%d/%s\r\n", hostname, ntohs(my_rtsp_addr.sin_port), filename); |
q += strlen(q); |
} |
break; |
case REDIR_SDP: |
{ |
uint8_t *sdp_data; |
int sdp_data_size; |
socklen_t len; |
struct sockaddr_in my_addr; |
|
snprintf(q, c->buffer_size, |
"HTTP/1.0 200 OK\r\n" |
"Content-type: application/sdp\r\n" |
"\r\n"); |
q += strlen(q); |
|
len = sizeof(my_addr); |
getsockname(c->fd, (struct sockaddr *)&my_addr, &len); |
|
/* XXX: should use a dynamic buffer */ |
sdp_data_size = prepare_sdp_description(stream, |
&sdp_data, |
my_addr.sin_addr); |
if (sdp_data_size > 0) { |
memcpy(q, sdp_data, sdp_data_size); |
q += sdp_data_size; |
*q = '\0'; |
av_free(sdp_data); |
} |
} |
break; |
default: |
abort(); |
break; |
} |
|
/* prepare output buffer */ |
c->buffer_ptr = c->buffer; |
c->buffer_end = q; |
c->state = HTTPSTATE_SEND_HEADER; |
return 0; |
} |
} |
} |
|
snprintf(msg, sizeof(msg), "ASX/RAM file not handled"); |
goto send_error; |
} |
|
stream->conns_served++; |
|
/* XXX: add there authenticate and IP match */ |
|
if (c->post) { |
/* if post, it means a feed is being sent */ |
if (!stream->is_feed) { |
/* However it might be a status report from WMP! Let us log the |
* data as it might come in handy one day. */ |
const char *logline = 0; |
int client_id = 0; |
|
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) { |
if (av_strncasecmp(p, "Pragma: log-line=", 17) == 0) { |
logline = p; |
break; |
} |
if (av_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", (int) (eol - logline), logline); |
c->suppress_log = 1; |
} |
} |
|
#ifdef DEBUG |
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 && modify_current_stream(wmpc, ratebuf)) |
wmpc->switch_pending = 1; |
} |
|
snprintf(msg, sizeof(msg), "POST command not handled"); |
c->stream = 0; |
goto send_error; |
} |
if (http_start_receive_data(c) < 0) { |
snprintf(msg, sizeof(msg), "could not open feed"); |
goto send_error; |
} |
c->http_error = 0; |
c->state = HTTPSTATE_RECEIVE_DATA; |
return 0; |
} |
|
#ifdef DEBUG |
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_status; |
|
/* open input stream */ |
if (open_input_stream(c, info) < 0) { |
snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url); |
goto send_error; |
} |
|
/* prepare http header */ |
c->buffer[0] = 0; |
av_strlcatf(c->buffer, c->buffer_size, "HTTP/1.0 200 OK\r\n"); |
mime_type = c->stream->fmt->mime_type; |
if (!mime_type) |
mime_type = "application/x-octet-stream"; |
av_strlcatf(c->buffer, c->buffer_size, "Pragma: no-cache\r\n"); |
|
/* for asf, we need extra headers */ |
if (!strcmp(c->stream->fmt->name,"asf_stream")) { |
/* Need to allocate a client id */ |
|
c->wmp_client_id = av_lfg_get(&random_state); |
|
av_strlcatf(c->buffer, c->buffer_size, "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); |
} |
av_strlcatf(c->buffer, c->buffer_size, "Content-Type: %s\r\n", mime_type); |
av_strlcatf(c->buffer, c->buffer_size, "\r\n"); |
q = c->buffer + strlen(c->buffer); |
|
/* 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; |
htmlstrip(msg); |
snprintf(q, c->buffer_size, |
"HTTP/1.0 404 Not Found\r\n" |
"Content-type: text/html\r\n" |
"\r\n" |
"<html>\n" |
"<head><title>404 Not Found</title></head>\n" |
"<body>%s</body>\n" |
"</html>\n", msg); |
q += strlen(q); |
/* prepare output buffer */ |
c->buffer_ptr = c->buffer; |
c->buffer_end = q; |
c->state = HTTPSTATE_SEND_HEADER; |
return 0; |
send_status: |
compute_status(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 fmt_bytecount(AVIOContext *pb, int64_t count) |
{ |
static const char suffix[] = " kMGTP"; |
const char *s; |
|
for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++); |
|
avio_printf(pb, "%"PRId64"%c", count, *s); |
} |
|
static void compute_status(HTTPContext *c) |
{ |
HTTPContext *c1; |
FFStream *stream; |
char *p; |
time_t ti; |
int i, len; |
AVIOContext *pb; |
|
if (avio_open_dyn_buf(&pb) < 0) { |
/* XXX: return an error ? */ |
c->buffer_ptr = c->buffer; |
c->buffer_end = c->buffer; |
return; |
} |
|
avio_printf(pb, "HTTP/1.0 200 OK\r\n"); |
avio_printf(pb, "Content-type: %s\r\n", "text/html"); |
avio_printf(pb, "Pragma: no-cache\r\n"); |
avio_printf(pb, "\r\n"); |
|
avio_printf(pb, "<html><head><title>%s Status</title>\n", program_name); |
if (c->stream->feed_filename[0]) |
avio_printf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename); |
avio_printf(pb, "</head>\n<body>"); |
avio_printf(pb, "<h1>%s Status</h1>\n", program_name); |
/* format status */ |
avio_printf(pb, "<h2>Available Streams</h2>\n"); |
avio_printf(pb, "<table cellspacing=0 cellpadding=4>\n"); |
avio_printf(pb, "<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) { |
av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10); |
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"); |
else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) { |
/* generate a sample RTSP director if |
unicast. Generate an SDP redirector if |
multicast */ |
eosf = strrchr(sfilename, '.'); |
if (!eosf) |
eosf = sfilename + strlen(sfilename); |
if (stream->is_multicast) |
strcpy(eosf, ".sdp"); |
else |
strcpy(eosf, ".rtsp"); |
} |
} |
|
avio_printf(pb, "<tr><td><a href=\"/%s\">%s</a> ", |
sfilename, stream->filename); |
avio_printf(pb, "<td align=right> %d <td align=right> ", |
stream->conns_served); |
fmt_bytecount(pb, stream->bytes_served); |
switch(stream->stream_type) { |
case STREAM_TYPE_LIVE: { |
int audio_bit_rate = 0; |
int video_bit_rate = 0; |
const char *audio_codec_name = ""; |
const char *video_codec_name = ""; |
const char *audio_codec_name_extra = ""; |
const 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 AVMEDIA_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 AVMEDIA_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; |
case AVMEDIA_TYPE_DATA: |
video_bit_rate += st->codec->bit_rate; |
break; |
default: |
abort(); |
} |
} |
avio_printf(pb, "<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, |
stream->bandwidth, |
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) |
avio_printf(pb, "<td>%s", stream->feed->filename); |
else |
avio_printf(pb, "<td>%s", stream->feed_filename); |
avio_printf(pb, "\n"); |
} |
break; |
default: |
avio_printf(pb, "<td align=center> - <td align=right> - <td align=right> - <td><td align=right> - <td>\n"); |
break; |
} |
} |
stream = stream->next; |
} |
avio_printf(pb, "</table>\n"); |
|
stream = first_stream; |
while (stream != NULL) { |
if (stream->feed == stream) { |
avio_printf(pb, "<h2>Feed %s</h2>", stream->filename); |
if (stream->pid) { |
avio_printf(pb, "Running as pid %d.\n", stream->pid); |
|
#if defined(linux) |
{ |
FILE *pid_stat; |
char ps_cmd[64]; |
|
/* This is somewhat linux specific I guess */ |
snprintf(ps_cmd, sizeof(ps_cmd), |
"ps -o \"%%cpu,cputime\" --no-headers %d", |
stream->pid); |
|
pid_stat = popen(ps_cmd, "r"); |
if (pid_stat) { |
char cpuperc[10]; |
char cpuused[64]; |
|
if (fscanf(pid_stat, "%9s %63s", cpuperc, |
cpuused) == 2) { |
avio_printf(pb, "Currently using %s%% of the cpu. Total time used %s.\n", |
cpuperc, cpuused); |
} |
fclose(pid_stat); |
} |
} |
#endif |
|
avio_printf(pb, "<p>"); |
} |
avio_printf(pb, "<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); |
const char *type = "unknown"; |
char parameters[64]; |
|
parameters[0] = 0; |
|
switch(st->codec->codec_type) { |
case AVMEDIA_TYPE_AUDIO: |
type = "audio"; |
snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate); |
break; |
case AVMEDIA_TYPE_VIDEO: |
type = "video"; |
snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height, |
st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num); |
break; |
default: |
abort(); |
} |
avio_printf(pb, "<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); |
} |
avio_printf(pb, "</table>\n"); |
|
} |
stream = stream->next; |
} |
|
/* connection status */ |
avio_printf(pb, "<h2>Connection Status</h2>\n"); |
|
avio_printf(pb, "Number of connections: %d / %d<br>\n", |
nb_connections, nb_max_connections); |
|
avio_printf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n", |
current_bandwidth, max_bandwidth); |
|
avio_printf(pb, "<table>\n"); |
avio_printf(pb, "<tr><th>#<th>File<th>IP<th>Proto<th>State<th>Target bits/sec<th>Actual bits/sec<th>Bytes transferred\n"); |
c1 = first_http_ctx; |
i = 0; |
while (c1 != NULL) { |
int bitrate; |
int j; |
|
bitrate = 0; |
if (c1->stream) { |
for (j = 0; j < c1->stream->nb_streams; j++) { |
if (!c1->stream->feed) |
bitrate += c1->stream->streams[j]->codec->bit_rate; |
else 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); |
avio_printf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td align=right>", |
i, |
c1->stream ? c1->stream->filename : "", |
c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "", |
p, |
c1->protocol, |
http_state[c1->state]); |
fmt_bytecount(pb, bitrate); |
avio_printf(pb, "<td align=right>"); |
fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8); |
avio_printf(pb, "<td align=right>"); |
fmt_bytecount(pb, c1->data_count); |
avio_printf(pb, "\n"); |
c1 = c1->next; |
} |
avio_printf(pb, "</table>\n"); |
|
/* date */ |
ti = time(NULL); |
p = ctime(&ti); |
avio_printf(pb, "<hr size=1 noshade>Generated at %s", p); |
avio_printf(pb, "</body>\n</html>\n"); |
|
len = avio_close_dyn_buf(pb, &c->pb_buffer); |
c->buffer_ptr = c->pb_buffer; |
c->buffer_end = c->pb_buffer + len; |
} |
|
static int open_input_stream(HTTPContext *c, const char *info) |
{ |
char buf[128]; |
char input_filename[1024]; |
AVFormatContext *s = NULL; |
int buf_size, i, ret; |
int64_t 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 (av_find_info_tag(buf, sizeof(buf), "date", info)) { |
if ((ret = av_parse_time(&stream_pos, buf, 0)) < 0) |
return ret; |
} else if (av_find_info_tag(buf, sizeof(buf), "buffer", info)) { |
int prebuffer = strtol(buf, 0, 10); |
stream_pos = av_gettime() - prebuffer * (int64_t)1000000; |
} else |
stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000; |
} else { |
strcpy(input_filename, c->stream->feed_filename); |
buf_size = 0; |
/* compute position (relative time) */ |
if (av_find_info_tag(buf, sizeof(buf), "date", info)) { |
if ((ret = av_parse_time(&stream_pos, buf, 1)) < 0) |
return ret; |
} else |
stream_pos = 0; |
} |
if (input_filename[0] == '\0') |
return -1; |
|
/* open stream */ |
if ((ret = avformat_open_input(&s, input_filename, c->stream->ifmt, &c->stream->in_opts)) < 0) { |
http_log("could not open %s: %d\n", input_filename, ret); |
return -1; |
} |
|
/* set buffer size */ |
if (buf_size > 0) ffio_set_buf_size(s->pb, buf_size); |
|
s->flags |= AVFMT_FLAG_GENPTS; |
c->fmt_in = s; |
if (strcmp(s->iformat->name, "ffm") && avformat_find_stream_info(c->fmt_in, NULL) < 0) { |
http_log("Could not find stream info '%s'\n", input_filename); |
avformat_close_input(&s); |
return -1; |
} |
|
/* choose stream as clock source (we favorize video stream if |
present) for packet sending */ |
c->pts_stream_index = 0; |
for(i=0;i<c->stream->nb_streams;i++) { |
if (c->pts_stream_index == 0 && |
c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
c->pts_stream_index = i; |
} |
} |
|
if (c->fmt_in->iformat->read_seek) |
av_seek_frame(c->fmt_in, -1, stream_pos, 0); |
/* set the start time (needed for maxtime and RTP packet timing) */ |
c->start_time = cur_time; |
c->first_pts = AV_NOPTS_VALUE; |
return 0; |
} |
|
/* return the server clock (in us) */ |
static int64_t get_server_clock(HTTPContext *c) |
{ |
/* compute current pts value from system time */ |
return (cur_time - c->start_time) * 1000; |
} |
|
/* return the estimated time at which the current packet must be sent |
(in us) */ |
static int64_t get_packet_send_clock(HTTPContext *c) |
{ |
int bytes_left, bytes_sent, frame_bytes; |
|
frame_bytes = c->cur_frame_bytes; |
if (frame_bytes <= 0) |
return c->cur_pts; |
else { |
bytes_left = c->buffer_end - c->buffer_ptr; |
bytes_sent = frame_bytes - bytes_left; |
return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes; |
} |
} |
|
|
static int http_prepare_data(HTTPContext *c) |
{ |
int i, len, ret; |
AVFormatContext *ctx; |
|
av_freep(&c->pb_buffer); |
switch(c->state) { |
case HTTPSTATE_SEND_DATA_HEADER: |
memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx)); |
av_dict_set(&c->fmt_ctx.metadata, "author" , c->stream->author , 0); |
av_dict_set(&c->fmt_ctx.metadata, "comment" , c->stream->comment , 0); |
av_dict_set(&c->fmt_ctx.metadata, "copyright", c->stream->copyright, 0); |
av_dict_set(&c->fmt_ctx.metadata, "title" , c->stream->title , 0); |
|
c->fmt_ctx.streams = av_mallocz(sizeof(AVStream *) * c->stream->nb_streams); |
|
for(i=0;i<c->stream->nb_streams;i++) { |
AVStream *src; |
c->fmt_ctx.streams[i] = av_mallocz(sizeof(AVStream)); |
/* if file or feed, then just take streams from FFStream struct */ |
if (!c->stream->feed || |
c->stream->feed == c->stream) |
src = c->stream->streams[i]; |
else |
src = c->stream->feed->streams[c->stream->feed_streams[i]]; |
|
*(c->fmt_ctx.streams[i]) = *src; |
c->fmt_ctx.streams[i]->priv_data = 0; |
c->fmt_ctx.streams[i]->codec->frame_number = 0; /* XXX: should be done in |
AVStream, not in codec */ |
} |
/* set output format parameters */ |
c->fmt_ctx.oformat = c->stream->fmt; |
c->fmt_ctx.nb_streams = c->stream->nb_streams; |
|
c->got_key_frame = 0; |
|
/* prepare header and save header data in a stream */ |
if (avio_open_dyn_buf(&c->fmt_ctx.pb) < 0) { |
/* XXX: potential leak */ |
return -1; |
} |
c->fmt_ctx.pb->seekable = 0; |
|
/* |
* HACK to avoid mpeg ps muxer to spit many underflow errors |
* Default value from FFmpeg |
* Try to set it use configuration option |
*/ |
c->fmt_ctx.max_delay = (int)(0.7*AV_TIME_BASE); |
|
if (avformat_write_header(&c->fmt_ctx, NULL) < 0) { |
http_log("Error writing output header\n"); |
return -1; |
} |
av_dict_free(&c->fmt_ctx.metadata); |
|
len = avio_close_dyn_buf(c->fmt_ctx.pb, &c->pb_buffer); |
c->buffer_ptr = c->pb_buffer; |
c->buffer_end = c->pb_buffer + len; |
|
c->state = HTTPSTATE_SEND_DATA; |
c->last_packet_sent = 0; |
break; |
case HTTPSTATE_SEND_DATA: |
/* find a new packet */ |
/* 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 { |
AVPacket pkt; |
redo: |
ret = av_read_frame(c->fmt_in, &pkt); |
if (ret < 0) { |
if (c->stream->feed) { |
/* 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 if (ret == AVERROR(EAGAIN)) { |
/* input not ready, come back later */ |
return 0; |
} else { |
if (c->stream->loop) { |
avformat_close_input(&c->fmt_in); |
if (open_input_stream(c, "") < 0) |
goto no_loop; |
goto redo; |
} else { |
no_loop: |
/* must send trailer now because eof or error */ |
c->state = HTTPSTATE_SEND_DATA_TRAILER; |
} |
} |
} else { |
int source_index = pkt.stream_index; |
/* update first pts if needed */ |
if (c->first_pts == AV_NOPTS_VALUE) { |
c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q); |
c->start_time = cur_time; |
} |
/* 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 & AV_PKT_FLAG_KEY) |
c->switch_feed_streams[i] = -1; |
if (c->switch_feed_streams[i] >= 0) |
c->switch_pending = 1; |
} |
} |
for(i=0;i<c->stream->nb_streams;i++) { |
if (c->stream->feed_streams[i] == pkt.stream_index) { |
AVStream *st = c->fmt_in->streams[source_index]; |
pkt.stream_index = i; |
if (pkt.flags & AV_PKT_FLAG_KEY && |
(st->codec->codec_type == AVMEDIA_TYPE_VIDEO || |
c->stream->nb_streams == 1)) |
c->got_key_frame = 1; |
if (!c->stream->send_on_key || c->got_key_frame) |
goto send_it; |
} |
} |
} else { |
AVCodecContext *codec; |
AVStream *ist, *ost; |
send_it: |
ist = c->fmt_in->streams[source_index]; |
/* specific handling for RTP: we use several |
output stream (one for each RTP |
connection). XXX: need more abstract handling */ |
if (c->is_packetized) { |
/* compute send time and duration */ |
c->cur_pts = av_rescale_q(pkt.dts, ist->time_base, AV_TIME_BASE_Q); |
c->cur_pts -= c->first_pts; |
c->cur_frame_duration = av_rescale_q(pkt.duration, ist->time_base, AV_TIME_BASE_Q); |
/* find RTP context */ |
c->packet_stream_index = pkt.stream_index; |
ctx = c->rtp_ctx[c->packet_stream_index]; |
if(!ctx) { |
av_free_packet(&pkt); |
break; |
} |
codec = ctx->streams[0]->codec; |
/* only one stream per RTP connection */ |
pkt.stream_index = 0; |
} else { |
ctx = &c->fmt_ctx; |
/* Fudge here */ |
codec = ctx->streams[pkt.stream_index]->codec; |
} |
|
if (c->is_packetized) { |
int max_packet_size; |
if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) |
max_packet_size = RTSP_TCP_MAX_PACKET_SIZE; |
else |
max_packet_size = c->rtp_handles[c->packet_stream_index]->max_packet_size; |
ret = ffio_open_dyn_packet_buf(&ctx->pb, max_packet_size); |
} else { |
ret = avio_open_dyn_buf(&ctx->pb); |
} |
if (ret < 0) { |
/* XXX: potential leak */ |
return -1; |
} |
ost = ctx->streams[pkt.stream_index]; |
|
ctx->pb->seekable = 0; |
if (pkt.dts != AV_NOPTS_VALUE) |
pkt.dts = av_rescale_q(pkt.dts, ist->time_base, ost->time_base); |
if (pkt.pts != AV_NOPTS_VALUE) |
pkt.pts = av_rescale_q(pkt.pts, ist->time_base, ost->time_base); |
pkt.duration = av_rescale_q(pkt.duration, ist->time_base, ost->time_base); |
if (av_write_frame(ctx, &pkt) < 0) { |
http_log("Error writing frame to output\n"); |
c->state = HTTPSTATE_SEND_DATA_TRAILER; |
} |
|
len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer); |
c->cur_frame_bytes = len; |
c->buffer_ptr = c->pb_buffer; |
c->buffer_end = c->pb_buffer + len; |
|
codec->frame_number++; |
if (len == 0) { |
av_free_packet(&pkt); |
goto redo; |
} |
} |
av_free_packet(&pkt); |
} |
} |
break; |
default: |
case HTTPSTATE_SEND_DATA_TRAILER: |
/* last packet test ? */ |
if (c->last_packet_sent || c->is_packetized) |
return -1; |
ctx = &c->fmt_ctx; |
/* prepare header */ |
if (avio_open_dyn_buf(&ctx->pb) < 0) { |
/* XXX: potential leak */ |
return -1; |
} |
c->fmt_ctx.pb->seekable = 0; |
av_write_trailer(ctx); |
len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer); |
c->buffer_ptr = c->pb_buffer; |
c->buffer_end = c->pb_buffer + len; |
|
c->last_packet_sent = 1; |
break; |
} |
return 0; |
} |
|
/* should convert the format at the same time */ |
/* send data starting at c->buffer_ptr to the output connection |
(either UDP or TCP connection) */ |
static int http_send_data(HTTPContext *c) |
{ |
int len, ret; |
|
for(;;) { |
if (c->buffer_ptr >= c->buffer_end) { |
ret = http_prepare_data(c); |
if (ret < 0) |
return -1; |
else if (ret != 0) |
/* state change requested */ |
break; |
} else { |
if (c->is_packetized) { |
/* RTP data output */ |
len = c->buffer_end - c->buffer_ptr; |
if (len < 4) { |
/* fail safe - should never happen */ |
fail1: |
c->buffer_ptr = c->buffer_end; |
return 0; |
} |
len = (c->buffer_ptr[0] << 24) | |
(c->buffer_ptr[1] << 16) | |
(c->buffer_ptr[2] << 8) | |
(c->buffer_ptr[3]); |
if (len > (c->buffer_end - c->buffer_ptr)) |
goto fail1; |
if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) { |
/* nothing to send yet: we can wait */ |
return 0; |
} |
|
c->data_count += len; |
update_datarate(&c->datarate, c->data_count); |
if (c->stream) |
c->stream->bytes_served += len; |
|
if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) { |
/* RTP packets are sent inside the RTSP TCP connection */ |
AVIOContext *pb; |
int interleaved_index, size; |
uint8_t header[4]; |
HTTPContext *rtsp_c; |
|
rtsp_c = c->rtsp_c; |
/* if no RTSP connection left, error */ |
if (!rtsp_c) |
return -1; |
/* if already sending something, then wait. */ |
if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST) |
break; |
if (avio_open_dyn_buf(&pb) < 0) |
goto fail1; |
interleaved_index = c->packet_stream_index * 2; |
/* RTCP packets are sent at odd indexes */ |
if (c->buffer_ptr[1] == 200) |
interleaved_index++; |
/* write RTSP TCP header */ |
header[0] = '$'; |
header[1] = interleaved_index; |
header[2] = len >> 8; |
header[3] = len; |
avio_write(pb, header, 4); |
/* write RTP packet data */ |
c->buffer_ptr += 4; |
avio_write(pb, c->buffer_ptr, len); |
size = avio_close_dyn_buf(pb, &c->packet_buffer); |
/* prepare asynchronous TCP sending */ |
rtsp_c->packet_buffer_ptr = c->packet_buffer; |
rtsp_c->packet_buffer_end = c->packet_buffer + size; |
c->buffer_ptr += len; |
|
/* send everything we can NOW */ |
len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr, |
rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0); |
if (len > 0) |
rtsp_c->packet_buffer_ptr += len; |
if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) { |
/* if we could not send all the data, we will |
send it later, so a new state is needed to |
"lock" the RTSP TCP connection */ |
rtsp_c->state = RTSPSTATE_SEND_PACKET; |
break; |
} else |
/* all data has been sent */ |
av_freep(&c->packet_buffer); |
} else { |
/* send RTP packet directly in UDP */ |
c->buffer_ptr += 4; |
ffurl_write(c->rtp_handles[c->packet_stream_index], |
c->buffer_ptr, len); |
c->buffer_ptr += len; |
/* here we continue as we can send several packets per 10 ms slot */ |
} |
} else { |
/* TCP data output */ |
len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0); |
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) |
/* error : close connection */ |
return -1; |
else |
return 0; |
} else |
c->buffer_ptr += len; |
|
c->data_count += len; |
update_datarate(&c->datarate, c->data_count); |
if (c->stream) |
c->stream->bytes_served += len; |
break; |
} |
} |
} /* for(;;) */ |
return 0; |
} |
|
static int http_start_receive_data(HTTPContext *c) |
{ |
int fd; |
|
if (c->stream->feed_opened) |
return -1; |
|
/* Don't permit writing to this one */ |
if (c->stream->readonly) |
return -1; |
|
/* open feed */ |
fd = open(c->stream->feed_filename, O_RDWR); |
if (fd < 0) { |
http_log("Error opening feeder file: %s\n", strerror(errno)); |
return -1; |
} |
c->feed_fd = fd; |
|
if (c->stream->truncate) { |
/* truncate feed file */ |
ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE); |
http_log("Truncating feed file '%s'\n", c->stream->feed_filename); |
if (ftruncate(c->feed_fd, FFM_PACKET_SIZE) < 0) { |
http_log("Error truncating feed file: %s\n", strerror(errno)); |
return -1; |
} |
} else { |
if ((c->stream->feed_write_index = ffm_read_write_index(fd)) < 0) { |
http_log("Error reading write index from feed file: %s\n", strerror(errno)); |
return -1; |
} |
} |
|
c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE); |
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; |
c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked"); |
return 0; |
} |
|
static int http_receive_data(HTTPContext *c) |
{ |
HTTPContext *c1; |
int len, loop_run = 0; |
|
while (c->chunked_encoding && !c->chunk_size && |
c->buffer_end > c->buffer_ptr) { |
/* read chunk header, if present */ |
len = recv(c->fd, c->buffer_ptr, 1, 0); |
|
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) |
/* error : close connection */ |
goto fail; |
return 0; |
} else if (len == 0) { |
/* end of connection : close it */ |
goto fail; |
} else if (c->buffer_ptr - c->buffer >= 2 && |
!memcmp(c->buffer_ptr - 1, "\r\n", 2)) { |
c->chunk_size = strtol(c->buffer, 0, 16); |
if (c->chunk_size == 0) // end of stream |
goto fail; |
c->buffer_ptr = c->buffer; |
break; |
} else if (++loop_run > 10) { |
/* no chunk header, abort */ |
goto fail; |
} else { |
c->buffer_ptr++; |
} |
} |
|
if (c->buffer_end > c->buffer_ptr) { |
len = recv(c->fd, c->buffer_ptr, |
FFMIN(c->chunk_size, c->buffer_end - c->buffer_ptr), 0); |
if (len < 0) { |
if (ff_neterrno() != AVERROR(EAGAIN) && |
ff_neterrno() != AVERROR(EINTR)) |
/* error : close connection */ |
goto fail; |
} else if (len == 0) |
/* end of connection : close it */ |
goto fail; |
else { |
c->chunk_size -= len; |
c->buffer_ptr += len; |
c->data_count += len; |
update_datarate(&c->datarate, c->data_count); |
} |
} |
|
if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) { |
if (c->buffer[0] != 'f' || |
c->buffer[1] != 'm') { |
http_log("Feed stream has become desynchronized -- disconnecting\n"); |
goto fail; |
} |
} |
|
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) { |
/* XXX: use llseek or url_seek */ |
lseek(c->feed_fd, feed->feed_write_index, SEEK_SET); |
if (write(c->feed_fd, c->buffer, FFM_PACKET_SIZE) < 0) { |
http_log("Error writing to feed file: %s\n", strerror(errno)); |
goto fail; |
} |
|
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 (c->stream->feed_max_size && feed->feed_write_index >= c->stream->feed_max_size) |
feed->feed_write_index = FFM_PACKET_SIZE; |
|
/* write index */ |
if (ffm_write_write_index(c->feed_fd, feed->feed_write_index) < 0) { |
http_log("Error writing index to feed file: %s\n", strerror(errno)); |
goto fail; |
} |
|
/* 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 = avformat_alloc_context(); |
AVIOContext *pb; |
AVInputFormat *fmt_in; |
int i; |
|
if (!s) |
goto fail; |
|
/* use feed output format name to find corresponding input format */ |
fmt_in = av_find_input_format(feed->fmt->name); |
if (!fmt_in) |
goto fail; |
|
pb = avio_alloc_context(c->buffer, c->buffer_end - c->buffer, |
0, NULL, NULL, NULL, NULL); |
pb->seekable = 0; |
|
s->pb = pb; |
if (avformat_open_input(&s, c->stream->feed_filename, fmt_in, NULL) < 0) { |
av_free(pb); |
goto fail; |
} |
|
/* Now we have the actual streams */ |
if (s->nb_streams != feed->nb_streams) { |
avformat_close_input(&s); |
av_free(pb); |
http_log("Feed '%s' stream number does not match registered feed\n", |
c->stream->feed_filename); |
goto fail; |
} |
|
for (i = 0; i < s->nb_streams; i++) { |
AVStream *fst = feed->streams[i]; |
AVStream *st = s->streams[i]; |
avcodec_copy_context(fst->codec, st->codec); |
} |
|
avformat_close_input(&s); |
av_free(pb); |
} |
c->buffer_ptr = c->buffer; |
} |
|
return 0; |
fail: |
c->stream->feed_opened = 0; |
close(c->feed_fd); |
/* wake up any waiting connections to stop waiting for feed */ |
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_TRAILER; |
} |
return -1; |
} |
|
/********************************************************************/ |
/* RTSP handling */ |
|
static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number) |
{ |
const char *str; |
time_t ti; |
struct tm *tm; |
char buf2[32]; |
|
switch(error_number) { |
case RTSP_STATUS_OK: |
str = "OK"; |
break; |
case RTSP_STATUS_METHOD: |
str = "Method Not Allowed"; |
break; |
case RTSP_STATUS_BANDWIDTH: |
str = "Not Enough Bandwidth"; |
break; |
case RTSP_STATUS_SESSION: |
str = "Session Not Found"; |
break; |
case RTSP_STATUS_STATE: |
str = "Method Not Valid in This State"; |
break; |
case RTSP_STATUS_AGGREGATE: |
str = "Aggregate operation not allowed"; |
break; |
case RTSP_STATUS_ONLY_AGGREGATE: |
str = "Only aggregate operation allowed"; |
break; |
case RTSP_STATUS_TRANSPORT: |
str = "Unsupported transport"; |
break; |
case RTSP_STATUS_INTERNAL: |
str = "Internal Server Error"; |
break; |
case RTSP_STATUS_SERVICE: |
str = "Service Unavailable"; |
break; |
case RTSP_STATUS_VERSION: |
str = "RTSP Version not supported"; |
break; |
default: |
str = "Unknown Error"; |
break; |
} |
|
avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str); |
avio_printf(c->pb, "CSeq: %d\r\n", c->seq); |
|
/* output GMT time */ |
ti = time(NULL); |
tm = gmtime(&ti); |
strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm); |
avio_printf(c->pb, "Date: %s GMT\r\n", buf2); |
} |
|
static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number) |
{ |
rtsp_reply_header(c, error_number); |
avio_printf(c->pb, "\r\n"); |
} |
|
static int rtsp_parse_request(HTTPContext *c) |
{ |
const char *p, *p1, *p2; |
char cmd[32]; |
char url[1024]; |
char protocol[32]; |
char line[1024]; |
int len; |
RTSPMessageHeader header1 = { 0 }, *header = &header1; |
|
c->buffer_ptr[0] = '\0'; |
p = c->buffer; |
|
get_word(cmd, sizeof(cmd), &p); |
get_word(url, sizeof(url), &p); |
get_word(protocol, sizeof(protocol), &p); |
|
av_strlcpy(c->method, cmd, sizeof(c->method)); |
av_strlcpy(c->url, url, sizeof(c->url)); |
av_strlcpy(c->protocol, protocol, sizeof(c->protocol)); |
|
if (avio_open_dyn_buf(&c->pb) < 0) { |
/* XXX: cannot do more */ |
c->pb = NULL; /* safety */ |
return -1; |
} |
|
/* check version name */ |
if (strcmp(protocol, "RTSP/1.0") != 0) { |
rtsp_reply_error(c, RTSP_STATUS_VERSION); |
goto the_end; |
} |
|
/* parse each header line */ |
/* skip to next line */ |
while (*p != '\n' && *p != '\0') |
p++; |
if (*p == '\n') |
p++; |
while (*p != '\0') { |
p1 = memchr(p, '\n', (char *)c->buffer_ptr - p); |
if (!p1) |
break; |
p2 = p1; |
if (p2 > p && p2[-1] == '\r') |
p2--; |
/* skip empty line */ |
if (p2 == p) |
break; |
len = p2 - p; |
if (len > sizeof(line) - 1) |
len = sizeof(line) - 1; |
memcpy(line, p, len); |
line[len] = '\0'; |
ff_rtsp_parse_line(header, line, NULL, NULL); |
p = p1 + 1; |
} |
|
/* handle sequence number */ |
c->seq = header->seq; |
|
if (!strcmp(cmd, "DESCRIBE")) |
rtsp_cmd_describe(c, url); |
else if (!strcmp(cmd, "OPTIONS")) |
rtsp_cmd_options(c, url); |
else if (!strcmp(cmd, "SETUP")) |
rtsp_cmd_setup(c, url, header); |
else if (!strcmp(cmd, "PLAY")) |
rtsp_cmd_play(c, url, header); |
else if (!strcmp(cmd, "PAUSE")) |
rtsp_cmd_pause(c, url, header); |
else if (!strcmp(cmd, "TEARDOWN")) |
rtsp_cmd_teardown(c, url, header); |
else |
rtsp_reply_error(c, RTSP_STATUS_METHOD); |
|
the_end: |
len = avio_close_dyn_buf(c->pb, &c->pb_buffer); |
c->pb = NULL; /* safety */ |
if (len < 0) { |
/* XXX: cannot do more */ |
return -1; |
} |
c->buffer_ptr = c->pb_buffer; |
c->buffer_end = c->pb_buffer + len; |
c->state = RTSPSTATE_SEND_REPLY; |
return 0; |
} |
|
static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer, |
struct in_addr my_ip) |
{ |
AVFormatContext *avc; |
AVStream *avs = NULL; |
AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL); |
int i; |
|
avc = avformat_alloc_context(); |
if (avc == NULL || !rtp_format) { |
return -1; |
} |
avc->oformat = rtp_format; |
av_dict_set(&avc->metadata, "title", |
stream->title[0] ? stream->title : "No Title", 0); |
avc->nb_streams = stream->nb_streams; |
if (stream->is_multicast) { |
snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d", |
inet_ntoa(stream->multicast_ip), |
stream->multicast_port, stream->multicast_ttl); |
} else { |
snprintf(avc->filename, 1024, "rtp://0.0.0.0"); |
} |
|
if (avc->nb_streams >= INT_MAX/sizeof(*avc->streams) || |
!(avc->streams = av_malloc(avc->nb_streams * sizeof(*avc->streams)))) |
goto sdp_done; |
if (avc->nb_streams >= INT_MAX/sizeof(*avs) || |
!(avs = av_malloc(avc->nb_streams * sizeof(*avs)))) |
goto sdp_done; |
|
for(i = 0; i < stream->nb_streams; i++) { |
avc->streams[i] = &avs[i]; |
avc->streams[i]->codec = stream->streams[i]->codec; |
} |
*pbuffer = av_mallocz(2048); |
av_sdp_create(&avc, 1, *pbuffer, 2048); |
|
sdp_done: |
av_free(avc->streams); |
av_dict_free(&avc->metadata); |
av_free(avc); |
av_free(avs); |
|
return strlen(*pbuffer); |
} |
|
static void rtsp_cmd_options(HTTPContext *c, const char *url) |
{ |
// rtsp_reply_header(c, RTSP_STATUS_OK); |
avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK"); |
avio_printf(c->pb, "CSeq: %d\r\n", c->seq); |
avio_printf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE"); |
avio_printf(c->pb, "\r\n"); |
} |
|
static void rtsp_cmd_describe(HTTPContext *c, const char *url) |
{ |
FFStream *stream; |
char path1[1024]; |
const char *path; |
uint8_t *content; |
int content_length; |
socklen_t len; |
struct sockaddr_in my_addr; |
|
/* find which url is asked */ |
av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url); |
path = path1; |
if (*path == '/') |
path++; |
|
for(stream = first_stream; stream != NULL; stream = stream->next) { |
if (!stream->is_feed && |
stream->fmt && !strcmp(stream->fmt->name, "rtp") && |
!strcmp(path, stream->filename)) { |
goto found; |
} |
} |
/* no stream found */ |
rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */ |
return; |
|
found: |
/* prepare the media description in sdp format */ |
|
/* get the host IP */ |
len = sizeof(my_addr); |
getsockname(c->fd, (struct sockaddr *)&my_addr, &len); |
content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr); |
if (content_length < 0) { |
rtsp_reply_error(c, RTSP_STATUS_INTERNAL); |
return; |
} |
rtsp_reply_header(c, RTSP_STATUS_OK); |
avio_printf(c->pb, "Content-Base: %s/\r\n", url); |
avio_printf(c->pb, "Content-Type: application/sdp\r\n"); |
avio_printf(c->pb, "Content-Length: %d\r\n", content_length); |
avio_printf(c->pb, "\r\n"); |
avio_write(c->pb, content, content_length); |
av_free(content); |
} |
|
static HTTPContext *find_rtp_session(const char *session_id) |
{ |
HTTPContext *c; |
|
if (session_id[0] == '\0') |
return NULL; |
|
for(c = first_http_ctx; c != NULL; c = c->next) { |
if (!strcmp(c->session_id, session_id)) |
return c; |
} |
return NULL; |
} |
|
static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport) |
{ |
RTSPTransportField *th; |
int i; |
|
for(i=0;i<h->nb_transports;i++) { |
th = &h->transports[i]; |
if (th->lower_transport == lower_transport) |
return th; |
} |
return NULL; |
} |
|
static void rtsp_cmd_setup(HTTPContext *c, const char *url, |
RTSPMessageHeader *h) |
{ |
FFStream *stream; |
int stream_index, rtp_port, rtcp_port; |
char buf[1024]; |
char path1[1024]; |
const char *path; |
HTTPContext *rtp_c; |
RTSPTransportField *th; |
struct sockaddr_in dest_addr; |
RTSPActionServerSetup setup; |
|
/* find which url is asked */ |
av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url); |
path = path1; |
if (*path == '/') |
path++; |
|
/* now check each stream */ |
for(stream = first_stream; stream != NULL; stream = stream->next) { |
if (!stream->is_feed && |
stream->fmt && !strcmp(stream->fmt->name, "rtp")) { |
/* accept aggregate filenames only if single stream */ |
if (!strcmp(path, stream->filename)) { |
if (stream->nb_streams != 1) { |
rtsp_reply_error(c, RTSP_STATUS_AGGREGATE); |
return; |
} |
stream_index = 0; |
goto found; |
} |
|
for(stream_index = 0; stream_index < stream->nb_streams; |
stream_index++) { |
snprintf(buf, sizeof(buf), "%s/streamid=%d", |
stream->filename, stream_index); |
if (!strcmp(path, buf)) |
goto found; |
} |
} |
} |
/* no stream found */ |
rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */ |
return; |
found: |
|
/* generate session id if needed */ |
if (h->session_id[0] == '\0') { |
unsigned random0 = av_lfg_get(&random_state); |
unsigned random1 = av_lfg_get(&random_state); |
snprintf(h->session_id, sizeof(h->session_id), "%08x%08x", |
random0, random1); |
} |
|
/* find rtp session, and create it if none found */ |
rtp_c = find_rtp_session(h->session_id); |
if (!rtp_c) { |
/* always prefer UDP */ |
th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP); |
if (!th) { |
th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP); |
if (!th) { |
rtsp_reply_error(c, RTSP_STATUS_TRANSPORT); |
return; |
} |
} |
|
rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id, |
th->lower_transport); |
if (!rtp_c) { |
rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH); |
return; |
} |
|
/* open input stream */ |
if (open_input_stream(rtp_c, "") < 0) { |
rtsp_reply_error(c, RTSP_STATUS_INTERNAL); |
return; |
} |
} |
|
/* test if stream is OK (test needed because several SETUP needs |
to be done for a given file) */ |
if (rtp_c->stream != stream) { |
rtsp_reply_error(c, RTSP_STATUS_SERVICE); |
return; |
} |
|
/* test if stream is already set up */ |
if (rtp_c->rtp_ctx[stream_index]) { |
rtsp_reply_error(c, RTSP_STATUS_STATE); |
return; |
} |
|
/* check transport */ |
th = find_transport(h, rtp_c->rtp_protocol); |
if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP && |
th->client_port_min <= 0)) { |
rtsp_reply_error(c, RTSP_STATUS_TRANSPORT); |
return; |
} |
|
/* setup default options */ |
setup.transport_option[0] = '\0'; |
dest_addr = rtp_c->from_addr; |
dest_addr.sin_port = htons(th->client_port_min); |
|
/* setup stream */ |
if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) { |
rtsp_reply_error(c, RTSP_STATUS_TRANSPORT); |
return; |
} |
|
/* now everything is OK, so we can send the connection parameters */ |
rtsp_reply_header(c, RTSP_STATUS_OK); |
/* session ID */ |
avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); |
|
switch(rtp_c->rtp_protocol) { |
case RTSP_LOWER_TRANSPORT_UDP: |
rtp_port = ff_rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]); |
rtcp_port = ff_rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]); |
avio_printf(c->pb, "Transport: RTP/AVP/UDP;unicast;" |
"client_port=%d-%d;server_port=%d-%d", |
th->client_port_min, th->client_port_max, |
rtp_port, rtcp_port); |
break; |
case RTSP_LOWER_TRANSPORT_TCP: |
avio_printf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d", |
stream_index * 2, stream_index * 2 + 1); |
break; |
default: |
break; |
} |
if (setup.transport_option[0] != '\0') |
avio_printf(c->pb, ";%s", setup.transport_option); |
avio_printf(c->pb, "\r\n"); |
|
|
avio_printf(c->pb, "\r\n"); |
} |
|
|
/* find an rtp connection by using the session ID. Check consistency |
with filename */ |
static HTTPContext *find_rtp_session_with_url(const char *url, |
const char *session_id) |
{ |
HTTPContext *rtp_c; |
char path1[1024]; |
const char *path; |
char buf[1024]; |
int s, len; |
|
rtp_c = find_rtp_session(session_id); |
if (!rtp_c) |
return NULL; |
|
/* find which url is asked */ |
av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url); |
path = path1; |
if (*path == '/') |
path++; |
if(!strcmp(path, rtp_c->stream->filename)) return rtp_c; |
for(s=0; s<rtp_c->stream->nb_streams; ++s) { |
snprintf(buf, sizeof(buf), "%s/streamid=%d", |
rtp_c->stream->filename, s); |
if(!strncmp(path, buf, sizeof(buf))) { |
// XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1? |
return rtp_c; |
} |
} |
len = strlen(path); |
if (len > 0 && path[len - 1] == '/' && |
!strncmp(path, rtp_c->stream->filename, len - 1)) |
return rtp_c; |
return NULL; |
} |
|
static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h) |
{ |
HTTPContext *rtp_c; |
|
rtp_c = find_rtp_session_with_url(url, h->session_id); |
if (!rtp_c) { |
rtsp_reply_error(c, RTSP_STATUS_SESSION); |
return; |
} |
|
if (rtp_c->state != HTTPSTATE_SEND_DATA && |
rtp_c->state != HTTPSTATE_WAIT_FEED && |
rtp_c->state != HTTPSTATE_READY) { |
rtsp_reply_error(c, RTSP_STATUS_STATE); |
return; |
} |
|
rtp_c->state = HTTPSTATE_SEND_DATA; |
|
/* now everything is OK, so we can send the connection parameters */ |
rtsp_reply_header(c, RTSP_STATUS_OK); |
/* session ID */ |
avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); |
avio_printf(c->pb, "\r\n"); |
} |
|
static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h) |
{ |
HTTPContext *rtp_c; |
|
rtp_c = find_rtp_session_with_url(url, h->session_id); |
if (!rtp_c) { |
rtsp_reply_error(c, RTSP_STATUS_SESSION); |
return; |
} |
|
if (rtp_c->state != HTTPSTATE_SEND_DATA && |
rtp_c->state != HTTPSTATE_WAIT_FEED) { |
rtsp_reply_error(c, RTSP_STATUS_STATE); |
return; |
} |
|
rtp_c->state = HTTPSTATE_READY; |
rtp_c->first_pts = AV_NOPTS_VALUE; |
/* now everything is OK, so we can send the connection parameters */ |
rtsp_reply_header(c, RTSP_STATUS_OK); |
/* session ID */ |
avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); |
avio_printf(c->pb, "\r\n"); |
} |
|
static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPMessageHeader *h) |
{ |
HTTPContext *rtp_c; |
|
rtp_c = find_rtp_session_with_url(url, h->session_id); |
if (!rtp_c) { |
rtsp_reply_error(c, RTSP_STATUS_SESSION); |
return; |
} |
|
/* now everything is OK, so we can send the connection parameters */ |
rtsp_reply_header(c, RTSP_STATUS_OK); |
/* session ID */ |
avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); |
avio_printf(c->pb, "\r\n"); |
|
/* abort the session */ |
close_connection(rtp_c); |
} |
|
|
/********************************************************************/ |
/* RTP handling */ |
|
static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr, |
FFStream *stream, const char *session_id, |
enum RTSPLowerTransport rtp_protocol) |
{ |
HTTPContext *c = NULL; |
const char *proto_str; |
|
/* XXX: should output a warning page when coming |
close to the connection limit */ |
if (nb_connections >= nb_max_connections) |
goto fail; |
|
/* add a new connection */ |
c = av_mallocz(sizeof(HTTPContext)); |
if (!c) |
goto fail; |
|
c->fd = -1; |
c->poll_entry = NULL; |
c->from_addr = *from_addr; |
c->buffer_size = IOBUFFER_INIT_SIZE; |
c->buffer = av_malloc(c->buffer_size); |
if (!c->buffer) |
goto fail; |
nb_connections++; |
c->stream = stream; |
av_strlcpy(c->session_id, session_id, sizeof(c->session_id)); |
c->state = HTTPSTATE_READY; |
c->is_packetized = 1; |
c->rtp_protocol = rtp_protocol; |
|
/* protocol is shown in statistics */ |
switch(c->rtp_protocol) { |
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: |
proto_str = "MCAST"; |
break; |
case RTSP_LOWER_TRANSPORT_UDP: |
proto_str = "UDP"; |
break; |
case RTSP_LOWER_TRANSPORT_TCP: |
proto_str = "TCP"; |
break; |
default: |
proto_str = "???"; |
break; |
} |
av_strlcpy(c->protocol, "RTP/", sizeof(c->protocol)); |
av_strlcat(c->protocol, proto_str, sizeof(c->protocol)); |
|
current_bandwidth += stream->bandwidth; |
|
c->next = first_http_ctx; |
first_http_ctx = c; |
return c; |
|
fail: |
if (c) { |
av_free(c->buffer); |
av_free(c); |
} |
return NULL; |
} |
|
/* add a new RTP stream in an RTP connection (used in RTSP SETUP |
command). If RTP/TCP protocol is used, TCP connection 'rtsp_c' is |
used. */ |
static int rtp_new_av_stream(HTTPContext *c, |
int stream_index, struct sockaddr_in *dest_addr, |
HTTPContext *rtsp_c) |
{ |
AVFormatContext *ctx; |
AVStream *st; |
char *ipaddr; |
URLContext *h = NULL; |
uint8_t *dummy_buf; |
int max_packet_size; |
|
/* now we can open the relevant output stream */ |
ctx = avformat_alloc_context(); |
if (!ctx) |
return -1; |
ctx->oformat = av_guess_format("rtp", NULL, NULL); |
|
st = av_mallocz(sizeof(AVStream)); |
if (!st) |
goto fail; |
ctx->nb_streams = 1; |
ctx->streams = av_mallocz(sizeof(AVStream *) * ctx->nb_streams); |
if (!ctx->streams) |
goto fail; |
ctx->streams[0] = st; |
|
if (!c->stream->feed || |
c->stream->feed == c->stream) |
memcpy(st, c->stream->streams[stream_index], sizeof(AVStream)); |
else |
memcpy(st, |
c->stream->feed->streams[c->stream->feed_streams[stream_index]], |
sizeof(AVStream)); |
st->priv_data = NULL; |
|
/* build destination RTP address */ |
ipaddr = inet_ntoa(dest_addr->sin_addr); |
|
switch(c->rtp_protocol) { |
case RTSP_LOWER_TRANSPORT_UDP: |
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: |
/* RTP/UDP case */ |
|
/* XXX: also pass as parameter to function ? */ |
if (c->stream->is_multicast) { |
int ttl; |
ttl = c->stream->multicast_ttl; |
if (!ttl) |
ttl = 16; |
snprintf(ctx->filename, sizeof(ctx->filename), |
"rtp://%s:%d?multicast=1&ttl=%d", |
ipaddr, ntohs(dest_addr->sin_port), ttl); |
} else { |
snprintf(ctx->filename, sizeof(ctx->filename), |
"rtp://%s:%d", ipaddr, ntohs(dest_addr->sin_port)); |
} |
|
if (ffurl_open(&h, ctx->filename, AVIO_FLAG_WRITE, NULL, NULL) < 0) |
goto fail; |
c->rtp_handles[stream_index] = h; |
max_packet_size = h->max_packet_size; |
break; |
case RTSP_LOWER_TRANSPORT_TCP: |
/* RTP/TCP case */ |
c->rtsp_c = rtsp_c; |
max_packet_size = RTSP_TCP_MAX_PACKET_SIZE; |
break; |
default: |
goto fail; |
} |
|
http_log("%s:%d - - \"PLAY %s/streamid=%d %s\"\n", |
ipaddr, ntohs(dest_addr->sin_port), |
c->stream->filename, stream_index, c->protocol); |
|
/* normally, no packets should be output here, but the packet size may be checked */ |
if (ffio_open_dyn_packet_buf(&ctx->pb, max_packet_size) < 0) { |
/* XXX: close stream */ |
goto fail; |
} |
if (avformat_write_header(ctx, NULL) < 0) { |
fail: |
if (h) |
ffurl_close(h); |
av_free(ctx); |
return -1; |
} |
avio_close_dyn_buf(ctx->pb, &dummy_buf); |
av_free(dummy_buf); |
|
c->rtp_ctx[stream_index] = ctx; |
return 0; |
} |
|
/********************************************************************/ |
/* ffserver initialization */ |
|
static AVStream *add_av_stream1(FFStream *stream, AVCodecContext *codec, int copy) |
{ |
AVStream *fst; |
|
if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams)) |
return NULL; |
|
fst = av_mallocz(sizeof(AVStream)); |
if (!fst) |
return NULL; |
if (copy) { |
fst->codec = avcodec_alloc_context3(NULL); |
memcpy(fst->codec, codec, sizeof(AVCodecContext)); |
if (codec->extradata_size) { |
fst->codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); |
memcpy(fst->codec->extradata, codec->extradata, |
codec->extradata_size); |
} |
} else { |
/* live streams must use the actual feed's codec since it may be |
* updated later to carry extradata needed by the streams. |
*/ |
fst->codec = codec; |
} |
fst->priv_data = av_mallocz(sizeof(FeedData)); |
fst->index = stream->nb_streams; |
avpriv_set_pts_info(fst, 33, 1, 90000); |
fst->sample_aspect_ratio = codec->sample_aspect_ratio; |
stream->streams[stream->nb_streams++] = fst; |
return fst; |
} |
|
/* return the stream number in the feed */ |
static 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 AVMEDIA_TYPE_AUDIO: |
if (av1->channels == av->channels && |
av1->sample_rate == av->sample_rate) |
return i; |
break; |
case AVMEDIA_TYPE_VIDEO: |
if (av1->width == av->width && |
av1->height == av->height && |
av1->time_base.den == av->time_base.den && |
av1->time_base.num == av->time_base.num && |
av1->gop_size == av->gop_size) |
return i; |
break; |
default: |
abort(); |
} |
} |
} |
|
fst = add_av_stream1(feed, av, 0); |
if (!fst) |
return -1; |
return feed->nb_streams - 1; |
} |
|
static void remove_stream(FFStream *stream) |
{ |
FFStream **ps; |
ps = &first_stream; |
while (*ps != NULL) { |
if (*ps == stream) |
*ps = (*ps)->next; |
else |
ps = &(*ps)->next; |
} |
} |
|
/* specific mpeg4 handling : we extract the raw parameters */ |
static void extract_mpeg4_header(AVFormatContext *infile) |
{ |
int mpeg4_count, i, size; |
AVPacket pkt; |
AVStream *st; |
const uint8_t *p; |
|
infile->flags |= AVFMT_FLAG_NOFILLIN | AVFMT_FLAG_NOPARSE; |
|
mpeg4_count = 0; |
for(i=0;i<infile->nb_streams;i++) { |
st = infile->streams[i]; |
if (st->codec->codec_id == AV_CODEC_ID_MPEG4 && |
st->codec->extradata_size == 0) { |
mpeg4_count++; |
} |
} |
if (!mpeg4_count) |
return; |
|
printf("MPEG4 without extra data: trying to find header in %s\n", infile->filename); |
while (mpeg4_count > 0) { |
if (av_read_frame(infile, &pkt) < 0) |
break; |
st = infile->streams[pkt.stream_index]; |
if (st->codec->codec_id == AV_CODEC_ID_MPEG4 && |
st->codec->extradata_size == 0) { |
av_freep(&st->codec->extradata); |
/* fill extradata with the header */ |
/* XXX: we make hard suppositions here ! */ |
p = pkt.data; |
while (p < pkt.data + pkt.size - 4) { |
/* stop when vop header is found */ |
if (p[0] == 0x00 && p[1] == 0x00 && |
p[2] == 0x01 && p[3] == 0xb6) { |
size = p - pkt.data; |
// av_hex_dump_log(infile, AV_LOG_DEBUG, pkt.data, size); |
st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE); |
st->codec->extradata_size = size; |
memcpy(st->codec->extradata, pkt.data, size); |
break; |
} |
p++; |
} |
mpeg4_count--; |
} |
av_free_packet(&pkt); |
} |
} |
|
/* compute the needed AVStream for each file */ |
static void build_file_streams(void) |
{ |
FFStream *stream, *stream_next; |
int i, ret; |
|
/* gather all streams */ |
for(stream = first_stream; stream != NULL; stream = stream_next) { |
AVFormatContext *infile = NULL; |
stream_next = stream->next; |
if (stream->stream_type == STREAM_TYPE_LIVE && |
!stream->feed) { |
/* the stream comes from a file */ |
/* try to open the file */ |
/* open stream */ |
if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) { |
/* specific case : if transport stream output to RTP, |
we use a raw transport stream reader */ |
av_dict_set(&stream->in_opts, "mpeg2ts_compute_pcr", "1", 0); |
} |
|
http_log("Opening file '%s'\n", stream->feed_filename); |
if ((ret = avformat_open_input(&infile, stream->feed_filename, stream->ifmt, &stream->in_opts)) < 0) { |
http_log("Could not open '%s': %d\n", stream->feed_filename, ret); |
/* remove stream (no need to spend more time on it) */ |
fail: |
remove_stream(stream); |
} else { |
/* find all the AVStreams inside and reference them in |
'stream' */ |
if (avformat_find_stream_info(infile, NULL) < 0) { |
http_log("Could not find codec parameters from '%s'\n", |
stream->feed_filename); |
avformat_close_input(&infile); |
goto fail; |
} |
extract_mpeg4_header(infile); |
|
for(i=0;i<infile->nb_streams;i++) |
add_av_stream1(stream, infile->streams[i]->codec, 1); |
|
avformat_close_input(&infile); |
} |
} |
} |
} |
|
/* compute the needed AVStream for each feed */ |
static 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] = i; |
} else { |
/* we handle a stream coming from a feed */ |
for(i=0;i<stream->nb_streams;i++) |
stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]); |
} |
} |
} |
|
/* create feed files if needed */ |
for(feed = first_feed; feed != NULL; feed = feed->next_feed) { |
int fd; |
|
if (avio_check(feed->feed_filename, AVIO_FLAG_READ) > 0) { |
/* See if it matches */ |
AVFormatContext *s = NULL; |
int matches = 0; |
|
if (avformat_open_input(&s, feed->feed_filename, NULL, NULL) >= 0) { |
/* set buffer size */ |
ffio_set_buf_size(s->pb, FFM_PACKET_SIZE); |
/* Now see if it matches */ |
if (s->nb_streams == feed->nb_streams) { |
matches = 1; |
for(i=0;i<s->nb_streams;i++) { |
AVStream *sf, *ss; |
sf = feed->streams[i]; |
ss = s->streams[i]; |
|
if (sf->index != ss->index || |
sf->id != ss->id) { |
http_log("Index & Id do not match for stream %d (%s)\n", |
i, feed->feed_filename); |
matches = 0; |
} else { |
AVCodecContext *ccf, *ccs; |
|
ccf = sf->codec; |
ccs = ss->codec; |
#define CHECK_CODEC(x) (ccf->x != ccs->x) |
|
if (CHECK_CODEC(codec_id) || CHECK_CODEC(codec_type)) { |
http_log("Codecs do not match for stream %d\n", i); |
matches = 0; |
} else if (CHECK_CODEC(bit_rate) || CHECK_CODEC(flags)) { |
http_log("Codec bitrates do not match for stream %d\n", i); |
matches = 0; |
} else if (ccf->codec_type == AVMEDIA_TYPE_VIDEO) { |
if (CHECK_CODEC(time_base.den) || |
CHECK_CODEC(time_base.num) || |
CHECK_CODEC(width) || |
CHECK_CODEC(height)) { |
http_log("Codec width, height and framerate do not match for stream %d\n", i); |
matches = 0; |
} |
} else if (ccf->codec_type == AVMEDIA_TYPE_AUDIO) { |
if (CHECK_CODEC(sample_rate) || |
CHECK_CODEC(channels) || |
CHECK_CODEC(frame_size)) { |
http_log("Codec sample_rate, channels, frame_size do not match for stream %d\n", i); |
matches = 0; |
} |
} else { |
http_log("Unknown codec type\n"); |
matches = 0; |
} |
} |
if (!matches) |
break; |
} |
} else |
http_log("Deleting feed file '%s' as stream counts differ (%d != %d)\n", |
feed->feed_filename, s->nb_streams, feed->nb_streams); |
|
avformat_close_input(&s); |
} else |
http_log("Deleting feed file '%s' as it appears to be corrupt\n", |
feed->feed_filename); |
|
if (!matches) { |
if (feed->readonly) { |
http_log("Unable to delete feed file '%s' as it is marked readonly\n", |
feed->feed_filename); |
exit(1); |
} |
unlink(feed->feed_filename); |
} |
} |
if (avio_check(feed->feed_filename, AVIO_FLAG_WRITE) <= 0) { |
AVFormatContext s1 = {0}, *s = &s1; |
|
if (feed->readonly) { |
http_log("Unable to create feed file '%s' as it is marked readonly\n", |
feed->feed_filename); |
exit(1); |
} |
|
/* only write the header of the ffm file */ |
if (avio_open(&s->pb, feed->feed_filename, AVIO_FLAG_WRITE) < 0) { |
http_log("Could not open output feed file '%s'\n", |
feed->feed_filename); |
exit(1); |
} |
s->oformat = feed->fmt; |
s->nb_streams = feed->nb_streams; |
s->streams = feed->streams; |
if (avformat_write_header(s, NULL) < 0) { |
http_log("Container doesn't support the required parameters\n"); |
exit(1); |
} |
/* XXX: need better api */ |
av_freep(&s->priv_data); |
avio_close(s->pb); |
} |
/* get feed size and write index */ |
fd = open(feed->feed_filename, O_RDONLY); |
if (fd < 0) { |
http_log("Could not open output feed file '%s'\n", |
feed->feed_filename); |
exit(1); |
} |
|
feed->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE); |
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_max_size < feed->feed_size) |
feed->feed_max_size = feed->feed_size; |
|
close(fd); |
} |
} |
|
/* compute the bandwidth used by each stream */ |
static void compute_bandwidth(void) |
{ |
unsigned bandwidth; |
int i; |
FFStream *stream; |
|
for(stream = first_stream; stream != NULL; stream = stream->next) { |
bandwidth = 0; |
for(i=0;i<stream->nb_streams;i++) { |
AVStream *st = stream->streams[i]; |
switch(st->codec->codec_type) { |
case AVMEDIA_TYPE_AUDIO: |
case AVMEDIA_TYPE_VIDEO: |
bandwidth += st->codec->bit_rate; |
break; |
default: |
break; |
} |
} |
stream->bandwidth = (bandwidth + 999) / 1000; |
} |
} |
|
/* add a codec and set the default parameters */ |
static void add_codec(FFStream *stream, AVCodecContext *av) |
{ |
AVStream *st; |
|
if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams)) |
return; |
|
/* compute default parameters */ |
switch(av->codec_type) { |
case AVMEDIA_TYPE_AUDIO: |
if (av->bit_rate == 0) |
av->bit_rate = 64000; |
if (av->sample_rate == 0) |
av->sample_rate = 22050; |
if (av->channels == 0) |
av->channels = 1; |
break; |
case AVMEDIA_TYPE_VIDEO: |
if (av->bit_rate == 0) |
av->bit_rate = 64000; |
if (av->time_base.num == 0){ |
av->time_base.den = 5; |
av->time_base.num = 1; |
} |
if (av->width == 0 || av->height == 0) { |
av->width = 160; |
av->height = 128; |
} |
/* Bitrate tolerance is less for streaming */ |
if (av->bit_rate_tolerance == 0) |
av->bit_rate_tolerance = FFMAX(av->bit_rate / 4, |
(int64_t)av->bit_rate*av->time_base.num/av->time_base.den); |
if (av->qmin == 0) |
av->qmin = 3; |
if (av->qmax == 0) |
av->qmax = 31; |
if (av->max_qdiff == 0) |
av->max_qdiff = 3; |
av->qcompress = 0.5; |
av->qblur = 0.5; |
|
if (!av->nsse_weight) |
av->nsse_weight = 8; |
|
av->frame_skip_cmp = FF_CMP_DCTMAX; |
if (!av->me_method) |
av->me_method = ME_EPZS; |
av->rc_buffer_aggressivity = 1.0; |
|
if (!av->rc_eq) |
av->rc_eq = av_strdup("tex^qComp"); |
if (!av->i_quant_factor) |
av->i_quant_factor = -0.8; |
if (!av->b_quant_factor) |
av->b_quant_factor = 1.25; |
if (!av->b_quant_offset) |
av->b_quant_offset = 1.25; |
if (!av->rc_max_rate) |
av->rc_max_rate = av->bit_rate * 2; |
|
if (av->rc_max_rate && !av->rc_buffer_size) { |
av->rc_buffer_size = av->rc_max_rate; |
} |
|
|
break; |
default: |
abort(); |
} |
|
st = av_mallocz(sizeof(AVStream)); |
if (!st) |
return; |
st->codec = avcodec_alloc_context3(NULL); |
stream->streams[stream->nb_streams++] = st; |
memcpy(st->codec, av, sizeof(AVCodecContext)); |
} |
|
static enum AVCodecID opt_audio_codec(const char *arg) |
{ |
AVCodec *p= avcodec_find_encoder_by_name(arg); |
|
if (p == NULL || p->type != AVMEDIA_TYPE_AUDIO) |
return AV_CODEC_ID_NONE; |
|
return p->id; |
} |
|
static enum AVCodecID opt_video_codec(const char *arg) |
{ |
AVCodec *p= avcodec_find_encoder_by_name(arg); |
|
if (p == NULL || p->type != AVMEDIA_TYPE_VIDEO) |
return AV_CODEC_ID_NONE; |
|
return p->id; |
} |
|
static int ffserver_opt_default(const char *opt, const char *arg, |
AVCodecContext *avctx, int type) |
{ |
int ret = 0; |
const AVOption *o = av_opt_find(avctx, opt, NULL, type, 0); |
if(o) |
ret = av_opt_set(avctx, opt, arg, 0); |
return ret; |
} |
|
static int ffserver_opt_preset(const char *arg, |
AVCodecContext *avctx, int type, |
enum AVCodecID *audio_id, enum AVCodecID *video_id) |
{ |
FILE *f=NULL; |
char filename[1000], tmp[1000], tmp2[1000], line[1000]; |
int ret = 0; |
AVCodec *codec = avcodec_find_encoder(avctx->codec_id); |
|
if (!(f = get_preset_file(filename, sizeof(filename), arg, 0, |
codec ? codec->name : NULL))) { |
fprintf(stderr, "File for preset '%s' not found\n", arg); |
return 1; |
} |
|
while(!feof(f)){ |
int e= fscanf(f, "%999[^\n]\n", line) - 1; |
if(line[0] == '#' && !e) |
continue; |
e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2; |
if(e){ |
fprintf(stderr, "%s: Invalid syntax: '%s'\n", filename, line); |
ret = 1; |
break; |
} |
if(!strcmp(tmp, "acodec")){ |
*audio_id = opt_audio_codec(tmp2); |
}else if(!strcmp(tmp, "vcodec")){ |
*video_id = opt_video_codec(tmp2); |
}else if(!strcmp(tmp, "scodec")){ |
/* opt_subtitle_codec(tmp2); */ |
}else if(ffserver_opt_default(tmp, tmp2, avctx, type) < 0){ |
fprintf(stderr, "%s: Invalid option or argument: '%s', parsed as '%s' = '%s'\n", filename, line, tmp, tmp2); |
ret = 1; |
break; |
} |
} |
|
fclose(f); |
|
return ret; |
} |
|
static AVOutputFormat *ffserver_guess_format(const char *short_name, const char *filename, |
const char *mime_type) |
{ |
AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type); |
|
if (fmt) { |
AVOutputFormat *stream_fmt; |
char stream_format_name[64]; |
|
snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name); |
stream_fmt = av_guess_format(stream_format_name, NULL, NULL); |
|
if (stream_fmt) |
fmt = stream_fmt; |
} |
|
return fmt; |
} |
|
static void report_config_error(const char *filename, int line_num, int *errors, const char *fmt, ...) |
{ |
va_list vl; |
va_start(vl, fmt); |
fprintf(stderr, "%s:%d: ", filename, line_num); |
vfprintf(stderr, fmt, vl); |
va_end(vl); |
|
(*errors)++; |
} |
|
static 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, *s; |
AVCodecContext audio_enc, video_enc; |
enum AVCodecID 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 = AV_CODEC_ID_NONE; |
video_id = AV_CODEC_ID_NONE; |
|
#define ERROR(...) report_config_error(filename, line_num, &errors, __VA_ARGS__) |
for(;;) { |
if (fgets(line, sizeof(line), f) == NULL) |
break; |
line_num++; |
p = line; |
while (av_isspace(*p)) |
p++; |
if (*p == '\0' || *p == '#') |
continue; |
|
get_arg(cmd, sizeof(cmd), &p); |
|
if (!av_strcasecmp(cmd, "Port")) { |
get_arg(arg, sizeof(arg), &p); |
val = atoi(arg); |
if (val < 1 || val > 65536) { |
ERROR("Invalid_port: %s\n", arg); |
} |
my_http_addr.sin_port = htons(val); |
} else if (!av_strcasecmp(cmd, "BindAddress")) { |
get_arg(arg, sizeof(arg), &p); |
if (resolve_host(&my_http_addr.sin_addr, arg) != 0) { |
ERROR("%s:%d: Invalid host/IP address: %s\n", arg); |
} |
} else if (!av_strcasecmp(cmd, "NoDaemon")) { |
// do nothing here, its the default now |
} else if (!av_strcasecmp(cmd, "RTSPPort")) { |
get_arg(arg, sizeof(arg), &p); |
val = atoi(arg); |
if (val < 1 || val > 65536) { |
ERROR("%s:%d: Invalid port: %s\n", arg); |
} |
my_rtsp_addr.sin_port = htons(atoi(arg)); |
} else if (!av_strcasecmp(cmd, "RTSPBindAddress")) { |
get_arg(arg, sizeof(arg), &p); |
if (resolve_host(&my_rtsp_addr.sin_addr, arg) != 0) { |
ERROR("Invalid host/IP address: %s\n", arg); |
} |
} else if (!av_strcasecmp(cmd, "MaxHTTPConnections")) { |
get_arg(arg, sizeof(arg), &p); |
val = atoi(arg); |
if (val < 1 || val > 65536) { |
ERROR("Invalid MaxHTTPConnections: %s\n", arg); |
} |
nb_max_http_connections = val; |
} else if (!av_strcasecmp(cmd, "MaxClients")) { |
get_arg(arg, sizeof(arg), &p); |
val = atoi(arg); |
if (val < 1 || val > nb_max_http_connections) { |
ERROR("Invalid MaxClients: %s\n", arg); |
} else { |
nb_max_connections = val; |
} |
} else if (!av_strcasecmp(cmd, "MaxBandwidth")) { |
int64_t llval; |
get_arg(arg, sizeof(arg), &p); |
llval = strtoll(arg, NULL, 10); |
if (llval < 10 || llval > 10000000) { |
ERROR("Invalid MaxBandwidth: %s\n", arg); |
} else |
max_bandwidth = llval; |
} else if (!av_strcasecmp(cmd, "CustomLog")) { |
if (!ffserver_debug) |
get_arg(logfilename, sizeof(logfilename), &p); |
} else if (!av_strcasecmp(cmd, "<Feed")) { |
/*********************************************/ |
/* Feed related options */ |
char *q; |
if (stream || feed) { |
ERROR("Already in a tag\n"); |
} else { |
feed = av_mallocz(sizeof(FFStream)); |
get_arg(feed->filename, sizeof(feed->filename), &p); |
q = strrchr(feed->filename, '>'); |
if (*q) |
*q = '\0'; |
|
for (s = first_feed; s; s = s->next) { |
if (!strcmp(feed->filename, s->filename)) { |
ERROR("Feed '%s' already registered\n", s->filename); |
} |
} |
|
feed->fmt = av_guess_format("ffm", NULL, NULL); |
/* 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 :-) */ |
|
/* add in stream list */ |
*last_stream = feed; |
last_stream = &feed->next; |
/* add in feed list */ |
*last_feed = feed; |
last_feed = &feed->next_feed; |
} |
} else if (!av_strcasecmp(cmd, "Launch")) { |
if (feed) { |
int i; |
|
feed->child_argv = av_mallocz(64 * sizeof(char *)); |
|
for (i = 0; i < 62; i++) { |
get_arg(arg, sizeof(arg), &p); |
if (!arg[0]) |
break; |
|
feed->child_argv[i] = av_strdup(arg); |
} |
|
feed->child_argv[i] = av_asprintf("http://%s:%d/%s", |
(my_http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" : |
inet_ntoa(my_http_addr.sin_addr), |
ntohs(my_http_addr.sin_port), feed->filename); |
} |
} else if (!av_strcasecmp(cmd, "ReadOnlyFile")) { |
if (feed) { |
get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p); |
feed->readonly = 1; |
} else if (stream) { |
get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p); |
} |
} else if (!av_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 (!av_strcasecmp(cmd, "Truncate")) { |
if (feed) { |
get_arg(arg, sizeof(arg), &p); |
feed->truncate = strtod(arg, NULL); |
} |
} else if (!av_strcasecmp(cmd, "FileMaxSize")) { |
if (feed) { |
char *p1; |
double fsize; |
|
get_arg(arg, sizeof(arg), &p); |
p1 = arg; |
fsize = strtod(p1, &p1); |
switch(av_toupper(*p1)) { |
case 'K': |
fsize *= 1024; |
break; |
case 'M': |
fsize *= 1024 * 1024; |
break; |
case 'G': |
fsize *= 1024 * 1024 * 1024; |
break; |
} |
feed->feed_max_size = (int64_t)fsize; |
if (feed->feed_max_size < FFM_PACKET_SIZE*4) { |
ERROR("Feed max file size is too small, must be at least %d\n", FFM_PACKET_SIZE*4); |
} |
} |
} else if (!av_strcasecmp(cmd, "</Feed>")) { |
if (!feed) { |
ERROR("No corresponding <Feed> for </Feed>\n"); |
} |
feed = NULL; |
} else if (!av_strcasecmp(cmd, "<Stream")) { |
/*********************************************/ |
/* Stream related options */ |
char *q; |
if (stream || feed) { |
ERROR("Already in a tag\n"); |
} else { |
FFStream *s; |
stream = av_mallocz(sizeof(FFStream)); |
get_arg(stream->filename, sizeof(stream->filename), &p); |
q = strrchr(stream->filename, '>'); |
if (q) |
*q = '\0'; |
|
for (s = first_stream; s; s = s->next) { |
if (!strcmp(stream->filename, s->filename)) { |
ERROR("Stream '%s' already registered\n", s->filename); |
} |
} |
|
stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL); |
avcodec_get_context_defaults3(&video_enc, NULL); |
avcodec_get_context_defaults3(&audio_enc, NULL); |
|
audio_id = AV_CODEC_ID_NONE; |
video_id = AV_CODEC_ID_NONE; |
if (stream->fmt) { |
audio_id = stream->fmt->audio_codec; |
video_id = stream->fmt->video_codec; |
} |
|
*last_stream = stream; |
last_stream = &stream->next; |
} |
} else if (!av_strcasecmp(cmd, "Feed")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
FFStream *sfeed; |
|
sfeed = first_feed; |
while (sfeed != NULL) { |
if (!strcmp(sfeed->filename, arg)) |
break; |
sfeed = sfeed->next_feed; |
} |
if (!sfeed) |
ERROR("feed '%s' not defined\n", arg); |
else |
stream->feed = sfeed; |
} |
} else if (!av_strcasecmp(cmd, "Format")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
if (!strcmp(arg, "status")) { |
stream->stream_type = STREAM_TYPE_STATUS; |
stream->fmt = NULL; |
} else { |
stream->stream_type = STREAM_TYPE_LIVE; |
/* jpeg cannot be used here, so use single frame jpeg */ |
if (!strcmp(arg, "jpeg")) |
strcpy(arg, "mjpeg"); |
stream->fmt = ffserver_guess_format(arg, NULL, NULL); |
if (!stream->fmt) { |
ERROR("Unknown Format: %s\n", arg); |
} |
} |
if (stream->fmt) { |
audio_id = stream->fmt->audio_codec; |
video_id = stream->fmt->video_codec; |
} |
} |
} else if (!av_strcasecmp(cmd, "InputFormat")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
stream->ifmt = av_find_input_format(arg); |
if (!stream->ifmt) { |
ERROR("Unknown input format: %s\n", arg); |
} |
} |
} else if (!av_strcasecmp(cmd, "FaviconURL")) { |
if (stream && stream->stream_type == STREAM_TYPE_STATUS) { |
get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p); |
} else { |
ERROR("FaviconURL only permitted for status streams\n"); |
} |
} else if (!av_strcasecmp(cmd, "Author")) { |
if (stream) |
get_arg(stream->author, sizeof(stream->author), &p); |
} else if (!av_strcasecmp(cmd, "Comment")) { |
if (stream) |
get_arg(stream->comment, sizeof(stream->comment), &p); |
} else if (!av_strcasecmp(cmd, "Copyright")) { |
if (stream) |
get_arg(stream->copyright, sizeof(stream->copyright), &p); |
} else if (!av_strcasecmp(cmd, "Title")) { |
if (stream) |
get_arg(stream->title, sizeof(stream->title), &p); |
} else if (!av_strcasecmp(cmd, "Preroll")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
stream->prebuffer = atof(arg) * 1000; |
} else if (!av_strcasecmp(cmd, "StartSendOnKey")) { |
if (stream) |
stream->send_on_key = 1; |
} else if (!av_strcasecmp(cmd, "AudioCodec")) { |
get_arg(arg, sizeof(arg), &p); |
audio_id = opt_audio_codec(arg); |
if (audio_id == AV_CODEC_ID_NONE) { |
ERROR("Unknown AudioCodec: %s\n", arg); |
} |
} else if (!av_strcasecmp(cmd, "VideoCodec")) { |
get_arg(arg, sizeof(arg), &p); |
video_id = opt_video_codec(arg); |
if (video_id == AV_CODEC_ID_NONE) { |
ERROR("Unknown VideoCodec: %s\n", arg); |
} |
} else if (!av_strcasecmp(cmd, "MaxTime")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
stream->max_time = atof(arg) * 1000; |
} else if (!av_strcasecmp(cmd, "AudioBitRate")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
audio_enc.bit_rate = lrintf(atof(arg) * 1000); |
} else if (!av_strcasecmp(cmd, "AudioChannels")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
audio_enc.channels = atoi(arg); |
} else if (!av_strcasecmp(cmd, "AudioSampleRate")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
audio_enc.sample_rate = atoi(arg); |
} else if (!av_strcasecmp(cmd, "AudioQuality")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
// audio_enc.quality = atof(arg) * 1000; |
} |
} else if (!av_strcasecmp(cmd, "VideoBitRateRange")) { |
if (stream) { |
int minrate, maxrate; |
|
get_arg(arg, sizeof(arg), &p); |
|
if (sscanf(arg, "%d-%d", &minrate, &maxrate) == 2) { |
video_enc.rc_min_rate = minrate * 1000; |
video_enc.rc_max_rate = maxrate * 1000; |
} else { |
ERROR("Incorrect format for VideoBitRateRange -- should be <min>-<max>: %s\n", arg); |
} |
} |
} else if (!av_strcasecmp(cmd, "Debug")) { |
if (stream) { |
get_arg(arg, sizeof(arg), &p); |
video_enc.debug = strtol(arg,0,0); |
} |
} else if (!av_strcasecmp(cmd, "Strict")) { |
if (stream) { |
get_arg(arg, sizeof(arg), &p); |
video_enc.strict_std_compliance = atoi(arg); |
} |
} else if (!av_strcasecmp(cmd, "VideoBufferSize")) { |
if (stream) { |
get_arg(arg, sizeof(arg), &p); |
video_enc.rc_buffer_size = atoi(arg) * 8*1024; |
} |
} else if (!av_strcasecmp(cmd, "VideoBitRateTolerance")) { |
if (stream) { |
get_arg(arg, sizeof(arg), &p); |
video_enc.bit_rate_tolerance = atoi(arg) * 1000; |
} |
} else if (!av_strcasecmp(cmd, "VideoBitRate")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
video_enc.bit_rate = atoi(arg) * 1000; |
} |
} else if (!av_strcasecmp(cmd, "VideoSize")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
av_parse_video_size(&video_enc.width, &video_enc.height, arg); |
if ((video_enc.width % 16) != 0 || |
(video_enc.height % 16) != 0) { |
ERROR("Image size must be a multiple of 16\n"); |
} |
} |
} else if (!av_strcasecmp(cmd, "VideoFrameRate")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
AVRational frame_rate; |
if (av_parse_video_rate(&frame_rate, arg) < 0) { |
ERROR("Incorrect frame rate: %s\n", arg); |
} else { |
video_enc.time_base.num = frame_rate.den; |
video_enc.time_base.den = frame_rate.num; |
} |
} |
} else if (!av_strcasecmp(cmd, "PixelFormat")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
video_enc.pix_fmt = av_get_pix_fmt(arg); |
if (video_enc.pix_fmt == AV_PIX_FMT_NONE) { |
ERROR("Unknown pixel format: %s\n", arg); |
} |
} |
} else if (!av_strcasecmp(cmd, "VideoGopSize")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
video_enc.gop_size = atoi(arg); |
} else if (!av_strcasecmp(cmd, "VideoIntraOnly")) { |
if (stream) |
video_enc.gop_size = 1; |
} else if (!av_strcasecmp(cmd, "VideoHighQuality")) { |
if (stream) |
video_enc.mb_decision = FF_MB_DECISION_BITS; |
} else if (!av_strcasecmp(cmd, "Video4MotionVector")) { |
if (stream) { |
video_enc.mb_decision = FF_MB_DECISION_BITS; //FIXME remove |
video_enc.flags |= CODEC_FLAG_4MV; |
} |
} else if (!av_strcasecmp(cmd, "AVOptionVideo") || |
!av_strcasecmp(cmd, "AVOptionAudio")) { |
char arg2[1024]; |
AVCodecContext *avctx; |
int type; |
get_arg(arg, sizeof(arg), &p); |
get_arg(arg2, sizeof(arg2), &p); |
if (!av_strcasecmp(cmd, "AVOptionVideo")) { |
avctx = &video_enc; |
type = AV_OPT_FLAG_VIDEO_PARAM; |
} else { |
avctx = &audio_enc; |
type = AV_OPT_FLAG_AUDIO_PARAM; |
} |
if (ffserver_opt_default(arg, arg2, avctx, type|AV_OPT_FLAG_ENCODING_PARAM)) { |
ERROR("AVOption error: %s %s\n", arg, arg2); |
} |
} else if (!av_strcasecmp(cmd, "AVPresetVideo") || |
!av_strcasecmp(cmd, "AVPresetAudio")) { |
AVCodecContext *avctx; |
int type; |
get_arg(arg, sizeof(arg), &p); |
if (!av_strcasecmp(cmd, "AVPresetVideo")) { |
avctx = &video_enc; |
video_enc.codec_id = video_id; |
type = AV_OPT_FLAG_VIDEO_PARAM; |
} else { |
avctx = &audio_enc; |
audio_enc.codec_id = audio_id; |
type = AV_OPT_FLAG_AUDIO_PARAM; |
} |
if (ffserver_opt_preset(arg, avctx, type|AV_OPT_FLAG_ENCODING_PARAM, &audio_id, &video_id)) { |
ERROR("AVPreset error: %s\n", arg); |
} |
} else if (!av_strcasecmp(cmd, "VideoTag")) { |
get_arg(arg, sizeof(arg), &p); |
if ((strlen(arg) == 4) && stream) |
video_enc.codec_tag = MKTAG(arg[0], arg[1], arg[2], arg[3]); |
} else if (!av_strcasecmp(cmd, "BitExact")) { |
if (stream) |
video_enc.flags |= CODEC_FLAG_BITEXACT; |
} else if (!av_strcasecmp(cmd, "DctFastint")) { |
if (stream) |
video_enc.dct_algo = FF_DCT_FASTINT; |
} else if (!av_strcasecmp(cmd, "IdctSimple")) { |
if (stream) |
video_enc.idct_algo = FF_IDCT_SIMPLE; |
} else if (!av_strcasecmp(cmd, "Qscale")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
video_enc.flags |= CODEC_FLAG_QSCALE; |
video_enc.global_quality = FF_QP2LAMBDA * atoi(arg); |
} |
} else if (!av_strcasecmp(cmd, "VideoQDiff")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
video_enc.max_qdiff = atoi(arg); |
if (video_enc.max_qdiff < 1 || video_enc.max_qdiff > 31) { |
ERROR("VideoQDiff out of range\n"); |
} |
} |
} else if (!av_strcasecmp(cmd, "VideoQMax")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
video_enc.qmax = atoi(arg); |
if (video_enc.qmax < 1 || video_enc.qmax > 31) { |
ERROR("VideoQMax out of range\n"); |
} |
} |
} else if (!av_strcasecmp(cmd, "VideoQMin")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
video_enc.qmin = atoi(arg); |
if (video_enc.qmin < 1 || video_enc.qmin > 31) { |
ERROR("VideoQMin out of range\n"); |
} |
} |
} else if (!av_strcasecmp(cmd, "LumiMask")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
video_enc.lumi_masking = atof(arg); |
} else if (!av_strcasecmp(cmd, "DarkMask")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
video_enc.dark_masking = atof(arg); |
} else if (!av_strcasecmp(cmd, "NoVideo")) { |
video_id = AV_CODEC_ID_NONE; |
} else if (!av_strcasecmp(cmd, "NoAudio")) { |
audio_id = AV_CODEC_ID_NONE; |
} else if (!av_strcasecmp(cmd, "ACL")) { |
parse_acl_row(stream, feed, NULL, p, filename, line_num); |
} else if (!av_strcasecmp(cmd, "DynamicACL")) { |
if (stream) { |
get_arg(stream->dynamic_acl, sizeof(stream->dynamic_acl), &p); |
} |
} else if (!av_strcasecmp(cmd, "RTSPOption")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
av_freep(&stream->rtsp_option); |
stream->rtsp_option = av_strdup(arg); |
} |
} else if (!av_strcasecmp(cmd, "MulticastAddress")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) { |
if (resolve_host(&stream->multicast_ip, arg) != 0) { |
ERROR("Invalid host/IP address: %s\n", arg); |
} |
stream->is_multicast = 1; |
stream->loop = 1; /* default is looping */ |
} |
} else if (!av_strcasecmp(cmd, "MulticastPort")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
stream->multicast_port = atoi(arg); |
} else if (!av_strcasecmp(cmd, "MulticastTTL")) { |
get_arg(arg, sizeof(arg), &p); |
if (stream) |
stream->multicast_ttl = atoi(arg); |
} else if (!av_strcasecmp(cmd, "NoLoop")) { |
if (stream) |
stream->loop = 0; |
} else if (!av_strcasecmp(cmd, "</Stream>")) { |
if (!stream) { |
ERROR("No corresponding <Stream> for </Stream>\n"); |
} else { |
if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm") != 0) { |
if (audio_id != AV_CODEC_ID_NONE) { |
audio_enc.codec_type = AVMEDIA_TYPE_AUDIO; |
audio_enc.codec_id = audio_id; |
add_codec(stream, &audio_enc); |
} |
if (video_id != AV_CODEC_ID_NONE) { |
video_enc.codec_type = AVMEDIA_TYPE_VIDEO; |
video_enc.codec_id = video_id; |
add_codec(stream, &video_enc); |
} |
} |
stream = NULL; |
} |
} else if (!av_strcasecmp(cmd, "<Redirect")) { |
/*********************************************/ |
char *q; |
if (stream || feed || redirect) { |
ERROR("Already in a tag\n"); |
} else { |
redirect = av_mallocz(sizeof(FFStream)); |
*last_stream = redirect; |
last_stream = &redirect->next; |
|
get_arg(redirect->filename, sizeof(redirect->filename), &p); |
q = strrchr(redirect->filename, '>'); |
if (*q) |
*q = '\0'; |
redirect->stream_type = STREAM_TYPE_REDIRECT; |
} |
} else if (!av_strcasecmp(cmd, "URL")) { |
if (redirect) |
get_arg(redirect->feed_filename, sizeof(redirect->feed_filename), &p); |
} else if (!av_strcasecmp(cmd, "</Redirect>")) { |
if (!redirect) { |
ERROR("No corresponding <Redirect> for </Redirect>\n"); |
} else { |
if (!redirect->feed_filename[0]) { |
ERROR("No URL found for <Redirect>\n"); |
} |
redirect = NULL; |
} |
} else if (!av_strcasecmp(cmd, "LoadModule")) { |
ERROR("Loadable modules no longer supported\n"); |
} else { |
ERROR("Incorrect keyword: '%s'\n", cmd); |
} |
} |
#undef ERROR |
|
fclose(f); |
if (errors) |
return -1; |
else |
return 0; |
} |
|
static void handle_child_exit(int sig) |
{ |
pid_t pid; |
int status; |
|
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { |
FFStream *feed; |
|
for (feed = first_feed; feed; feed = feed->next) { |
if (feed->pid == pid) { |
int uptime = time(0) - feed->pid_start; |
|
feed->pid = 0; |
fprintf(stderr, "%s: Pid %d exited with status %d after %d seconds\n", feed->filename, pid, status, uptime); |
|
if (uptime < 30) |
/* Turn off any more restarts */ |
feed->child_argv = 0; |
} |
} |
} |
|
need_to_start_children = 1; |
} |
|
static void opt_debug(void) |
{ |
ffserver_debug = 1; |
logfilename[0] = '-'; |
} |
|
void show_help_default(const char *opt, const char *arg) |
{ |
printf("usage: ffserver [options]\n" |
"Hyper fast multi format Audio/Video streaming server\n"); |
printf("\n"); |
show_help_options(options, "Main options:", 0, 0, 0); |
} |
|
static const OptionDef options[] = { |
#include "cmdutils_common_opts.h" |
{ "n", OPT_BOOL, {(void *)&no_launch }, "enable no-launch mode" }, |
{ "d", 0, {(void*)opt_debug}, "enable debug mode" }, |
{ "f", HAS_ARG | OPT_STRING, {(void*)&config_filename }, "use configfile instead of /etc/ffserver.conf", "configfile" }, |
{ NULL }, |
}; |
|
int main(int argc, char **argv) |
{ |
struct sigaction sigact = { { 0 } }; |
|
config_filename = av_strdup("/etc/ffserver.conf"); |
|
parse_loglevel(argc, argv, options); |
av_register_all(); |
avformat_network_init(); |
|
show_banner(argc, argv, options); |
|
my_program_name = argv[0]; |
|
parse_options(NULL, argc, argv, options, NULL); |
|
unsetenv("http_proxy"); /* Kill the http_proxy */ |
|
av_lfg_init(&random_state, av_get_random_seed()); |
|
sigact.sa_handler = handle_child_exit; |
sigact.sa_flags = SA_NOCLDSTOP | SA_RESTART; |
sigaction(SIGCHLD, &sigact, 0); |
|
if (parse_ffconfig(config_filename) < 0) { |
fprintf(stderr, "Incorrect config file - exiting.\n"); |
exit(1); |
} |
av_freep(&config_filename); |
|
/* open log file if needed */ |
if (logfilename[0] != '\0') { |
if (!strcmp(logfilename, "-")) |
logfile = stdout; |
else |
logfile = fopen(logfilename, "a"); |
av_log_set_callback(http_av_log); |
} |
|
build_file_streams(); |
|
build_feed_streams(); |
|
compute_bandwidth(); |
|
/* signal init */ |
signal(SIGPIPE, SIG_IGN); |
|
if (http_server() < 0) { |
http_log("Could not start server\n"); |
exit(1); |
} |
|
return 0; |
} |