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ffmpeg.wasm-core
Commit 42a63c6a authored by Philip Gladstone's avatar Philip Gladstone
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* Add code to configure the following: 

  * prebuffering/preroll a live stream -- this improves startup time
  * videoqmin/videoqmax/videoqdiff -- codec parameters
  * maximum bandwidth for live streams
* Add support for .ram and .rpm extensions mapping onto .rm
* Make the status page show bandwidth. Also make the .asf and .rm
  links go to .asx and .ram files.
* Make a stream only start streaming when it gets a keyframe on each
  stream. This is arguable, and it maybe ought to be restricted to
  live streams. However, since I don't think that file streams work,
  this is a step in the right direction. It improves the startup delay.
* Log an error if we are unable to delete the temp feed file.

Originally committed as revision 501 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 3884a3c3
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Showing with 172 additions and 27 deletions
ffserver.c
View file @ 42a63c6a
......@@ -83,7 +83,7 @@ typedef struct HTTPContext {
UINT8 *buffer_ptr, *buffer_end;
int http_error;
struct HTTPContext *next;
int got_key_frame[MAX_STREAMS]; /* for each type */
int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
INT64 data_count;
/* feed input */
int feed_fd;
......@@ -94,6 +94,7 @@ typedef struct HTTPContext {
AVFormatContext fmt_ctx;
int last_packet_sent; /* true if last data packet was sent */
int suppress_log;
int bandwidth;
char protocol[16];
char method[16];
char url[128];
......@@ -114,6 +115,7 @@ typedef struct FFStream {
struct FFStream *feed;
AVFormat *fmt;
int nb_streams;
int prebuffer; /* Number of millseconds early to start */
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
......@@ -150,6 +152,9 @@ static int http_receive_data(HTTPContext *c);
int nb_max_connections;
int nb_connections;
int nb_max_bandwidth;
int nb_bandwidth;
static long gettime_ms(void)
{
struct timeval tv;
......@@ -296,6 +301,7 @@ static int http_server(struct sockaddr_in my_addr)
if (c->fmt_in)
av_close_input_file(c->fmt_in);
*cp = c->next;
nb_bandwidth -= c->bandwidth;
free(c);
nb_connections--;
} else {
......@@ -443,6 +449,7 @@ static int http_parse_request(HTTPContext *c)
char *p;
int post;
int doing_asx;
int doing_ram;
char cmd[32];
char info[1024], *filename;
char url[1024], *q;
......@@ -450,6 +457,7 @@ static int http_parse_request(HTTPContext *c)
char msg[1024];
const char *mime_type;
FFStream *stream;
int i;
p = c->buffer;
q = cmd;
......@@ -513,6 +521,15 @@ static int http_parse_request(HTTPContext *c)
doing_asx = 0;
}
if (strlen(filename) > 4 &&
(strcmp(".rpm", filename + strlen(filename) - 4) == 0 ||
strcmp(".ram", filename + strlen(filename) - 4) == 0)) {
doing_ram = 1;
strcpy(filename + strlen(filename)-2, "m");
} else {
doing_ram = 0;
}
stream = first_stream;
while (stream != NULL) {
if (!strcmp(stream->filename, filename))
......@@ -523,7 +540,47 @@ static int http_parse_request(HTTPContext *c)
sprintf(msg, "File '%s' not found", url);
goto send_error;
}
if (doing_asx) {
if (post == 0 && stream->stream_type == STREAM_TYPE_LIVE) {
/* See if we meet the bandwidth requirements */
for(i=0;i<stream->nb_streams;i++) {
AVStream *st = stream->streams[i];
switch(st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
c->bandwidth += st->codec.bit_rate;
break;
case CODEC_TYPE_VIDEO:
c->bandwidth += st->codec.bit_rate;
break;
default:
abort();
}
}
}
c->bandwidth /= 1000;
nb_bandwidth += c->bandwidth;
if (post == 0 && nb_max_bandwidth < nb_bandwidth) {
c->http_error = 200;
q = c->buffer;
q += sprintf(q, "HTTP/1.0 200 Server too busy\r\n");
q += sprintf(q, "Content-type: text/html\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "<html><head><title>Too busy</title></head><body>\r\n");
q += sprintf(q, "The server is too busy to serve your request at this time.<p>\r\n");
q += sprintf(q, "The bandwidth being served (including your stream) is %dkbit/sec, and this exceeds the limit of %dkbit/sec\r\n",
nb_bandwidth, nb_max_bandwidth);
q += sprintf(q, "</body></html>\r\n");
/* prepare output buffer */
c->buffer_ptr = c->buffer;
c->buffer_end = q;
c->state = HTTPSTATE_SEND_HEADER;
return 0;
}
if (doing_asx || doing_ram) {
char *hostinfo = 0;
for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
......@@ -556,6 +613,7 @@ static int http_parse_request(HTTPContext *c)
c->http_error = 200;
q = c->buffer;
if (doing_asx) {
q += sprintf(q, "HTTP/1.0 200 ASX Follows\r\n");
q += sprintf(q, "Content-type: video/x-ms-asf\r\n");
q += sprintf(q, "\r\n");
......@@ -564,6 +622,15 @@ static int http_parse_request(HTTPContext *c)
q += sprintf(q, "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n",
hostbuf, filename, info);
q += sprintf(q, "</ASX>\r\n");
} else if (doing_ram) {
q += sprintf(q, "HTTP/1.0 200 RAM Follows\r\n");
q += sprintf(q, "Content-type: audio/x-pn-realaudio\r\n");
q += sprintf(q, "\r\n");
q += sprintf(q, "# Autogenerated by ffserver\r\n");
q += sprintf(q, "http://%s/%s%s\r\n",
hostbuf, filename, info);
} else
abort();
/* prepare output buffer */
c->buffer_ptr = c->buffer;
......@@ -574,7 +641,7 @@ static int http_parse_request(HTTPContext *c)
}
}
sprintf(msg, "ASX file not handled");
sprintf(msg, "ASX/RAM file not handled");
goto send_error;
}
......@@ -706,8 +773,21 @@ static void compute_stats(HTTPContext *c)
q += sprintf(q, "<TR><TD>Path<TD>Format<TD>Bit rate (kbits/s)<TD>Video<TD>Audio<TD>Feed\n");
stream = first_stream;
while (stream != NULL) {
char sfilename[1024];
char *eosf;
strlcpy(sfilename, stream->filename, sizeof(sfilename) - 1);
eosf = sfilename + strlen(sfilename);
if (eosf - sfilename >= 4) {
if (strcmp(eosf - 4, ".asf") == 0) {
strcpy(eosf - 4, ".asx");
} else if (strcmp(eosf - 3, ".rm") == 0) {
strcpy(eosf - 3, ".ram");
}
}
q += sprintf(q, "<TR><TD><A HREF=\"/%s\">%s</A> ",
stream->filename, stream->filename);
sfilename, stream->filename);
switch(stream->stream_type) {
case STREAM_TYPE_LIVE:
{
......@@ -783,6 +863,9 @@ static void compute_stats(HTTPContext *c)
q += sprintf(q, "Number of connections: %d / %d<BR>\n",
nb_connections, nb_max_connections);
q += sprintf(q, "Bandwidth in use: %dk / %dk<BR>\n",
nb_bandwidth, nb_max_bandwidth);
q += sprintf(q, "<TABLE>\n");
q += sprintf(q, "<TR><TD>#<TD>File<TD>IP<TD>State<TD>Size\n");
c1 = first_http_ctx;
......@@ -845,7 +928,7 @@ static int open_input_stream(HTTPContext *c, const char *info)
int prebuffer = strtol(buf, 0, 10);
stream_pos = gettime() - prebuffer * 1000000;
} else {
stream_pos = gettime();
stream_pos = gettime() - c->stream->prebuffer * 1000;
}
} else {
strcpy(input_filename, c->stream->feed_filename);
......@@ -896,8 +979,8 @@ static int http_prepare_data(HTTPContext *c)
st->codec.frame_number = 0; /* XXX: should be done in
AVStream, not in codec */
c->got_key_frame[i] = 0;
}
c->got_key_frame = 0;
} else {
/* open output stream by using codecs in specified file */
c->fmt_ctx.format = c->stream->fmt;
......@@ -909,8 +992,8 @@ static int http_prepare_data(HTTPContext *c)
memcpy(st, c->fmt_in->streams[i], sizeof(AVStream));
st->codec.frame_number = 0; /* XXX: should be done in
AVStream, not in codec */
c->got_key_frame[i] = 0;
}
c->got_key_frame = 0;
}
init_put_byte(&c->fmt_ctx.pb, c->pbuffer, PACKET_MAX_SIZE,
1, c, NULL, http_write_packet, NULL);
......@@ -928,9 +1011,7 @@ static int http_prepare_data(HTTPContext *c)
/* overflow : resync. We suppose that wptr is at this
point a pointer to a valid packet */
c->rptr = http_fifo.wptr;
for(i=0;i<c->fmt_ctx.nb_streams;i++) {
c->got_key_frame[i] = 0;
}
c->got_key_frame = 0;
}
start_rptr = c->rptr;
......@@ -956,8 +1037,8 @@ static int http_prepare_data(HTTPContext *c)
if (test_header(&hdr, &st->codec)) {
/* only begin sending when got a key frame */
if (st->codec.key_frame)
c->got_key_frame[i] = 1;
if (c->got_key_frame[i]) {
c->got_key_frame |= 1 << i;
if (c->got_key_frame & (1 << i)) {
ret = c->fmt_ctx.format->write_packet(&c->fmt_ctx, i,
payload, payload_size);
}
......@@ -1007,9 +1088,21 @@ static int http_prepare_data(HTTPContext *c)
for(i=0;i<c->stream->nb_streams;i++) {
if (c->stream->feed_streams[i] == pkt.stream_index) {
pkt.stream_index = i;
if (pkt.flags & PKT_FLAG_KEY) {
c->got_key_frame |= 1 << i;
}
/* See if we have all the key frames, then
* we start to send. This logic is not quite
* right, but it works for the case of a
* single video stream with one or more
* audio streams (for which every frame is
* typically a key frame).
*/
if ((c->got_key_frame + 1) >> c->stream->nb_streams) {
goto send_it;
}
}
}
} else {
AVCodecContext *codec;
send_it:
......@@ -1353,12 +1446,16 @@ void add_codec(FFStream *stream, AVCodecContext *av)
av->height = 128;
}
/* Bitrate tolerance is less for streaming */
if (av->bit_rate_tolerance == 0)
av->bit_rate_tolerance = av->bit_rate / 4;
if (av->qmin == 0)
av->qmin = 3;
if (av->qmax == 0)
av->qmax = 31;
if (av->max_qdiff == 0)
av->max_qdiff = 3;
av->qcompress = 0.5;
av->qblur = 0.5;
av->max_qdiff = 3;
break;
default:
......@@ -1467,6 +1564,16 @@ int parse_ffconfig(const char *filename)
} else {
nb_max_connections = val;
}
} else if (!strcasecmp(cmd, "MaxBandwidth")) {
get_arg(arg, sizeof(arg), &p);
val = atoi(arg);
if (val < 10 || val > 100000) {
fprintf(stderr, "%s:%d: Invalid MaxBandwidth: %s\n",
filename, line_num, arg);
errors++;
} else {
nb_max_bandwidth = val;
}
} else if (!strcasecmp(cmd, "CustomLog")) {
get_arg(logfilename, sizeof(logfilename), &p);
} else if (!strcasecmp(cmd, "<Feed")) {
......@@ -1531,7 +1638,12 @@ int parse_ffconfig(const char *filename)
errors++;
} else {
/* Make sure that we start out clean */
unlink(feed->feed_filename);
if (unlink(feed->feed_filename) < 0
&& errno != ENOENT) {
fprintf(stderr, "%s:%d: Unable to clean old feed file '%s': %s\n",
filename, line_num, feed->feed_filename, strerror(errno));
errors++;
}
}
feed = NULL;
} else if (!strcasecmp(cmd, "<Stream")) {
......@@ -1599,6 +1711,11 @@ int parse_ffconfig(const char *filename)
audio_id = stream->fmt->audio_codec;
video_id = stream->fmt->video_codec;
}
} else if (!strcasecmp(cmd, "Preroll")) {
get_arg(arg, sizeof(arg), &p);
if (stream) {
stream->prebuffer = atoi(arg) * 1000;
}
} else if (!strcasecmp(cmd, "AudioCodec")) {
get_arg(arg, sizeof(arg), &p);
audio_id = opt_audio_codec(arg);
......@@ -1664,6 +1781,33 @@ int parse_ffconfig(const char *filename)
if (stream) {
video_enc.flags |= CODEC_FLAG_HQ;
}
} else if (!strcasecmp(cmd, "VideoQDiff")) {
if (stream) {
video_enc.max_qdiff = atoi(arg);
if (video_enc.max_qdiff < 1 || video_enc.max_qdiff > 31) {
fprintf(stderr, "%s:%d: VideoQDiff out of range\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "VideoQMax")) {
if (stream) {
video_enc.qmax = atoi(arg);
if (video_enc.qmax < 1 || video_enc.qmax > 31) {
fprintf(stderr, "%s:%d: VideoQMax out of range\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "VideoQMin")) {
if (stream) {
video_enc.qmin = atoi(arg);
if (video_enc.qmin < 1 || video_enc.qmin > 31) {
fprintf(stderr, "%s:%d: VideoQMin out of range\n",
filename, line_num);
errors++;
}
}
} else if (!strcasecmp(cmd, "NoVideo")) {
video_id = CODEC_ID_NONE;
} else if (!strcasecmp(cmd, "NoAudio")) {
......@@ -1793,6 +1937,7 @@ int main(int argc, char **argv)
my_addr.sin_port = htons (8080);
my_addr.sin_addr.s_addr = htonl (INADDR_ANY);
nb_max_connections = 5;
nb_max_bandwidth = 1000;
first_stream = NULL;
logfilename[0] = '\0';
......
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