static rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidth) {
sdpplin_t *desc;
rmff_header_t *header;
char *buf;
int len, i;
int max_bit_rate=0;
int avg_bit_rate=0;
int max_packet_size=0;
int avg_packet_size=0;
int duration=0;
if (!data) return NULL;
desc=sdpplin_parse(data);
if (!desc) return NULL;
buf = xbuffer_init(2048);
header=calloc(1,sizeof(rmff_header_t));
header->fileheader=rmff_new_fileheader(4+desc->stream_count);
header->cont=rmff_new_cont(
desc->title,
desc->author,
desc->copyright,
desc->abstract);
header->data=rmff_new_dataheader(0,0);
header->streams=calloc(1,sizeof(rmff_mdpr_t*)*(desc->stream_count+1));
#ifdef LOG
printf("number of streams: %u\n", desc->stream_count);
#endif
for (i=0; i<desc->stream_count; i++) {
int j=0;
int n;
char b[64];
int rulematches[MAX_RULEMATCHES];
if (!desc->stream[i])
continue;
#ifdef LOG
printf("calling asmrp_match with:\n%s\n%u\n", desc->stream[i]->asm_rule_book, bandwidth);
#endif
n=asmrp_match(desc->stream[i]->asm_rule_book, bandwidth, rulematches);
for (j=0; j<n; j++) {
#ifdef LOG
printf("asmrp rule match: %u for stream %u\n", rulematches[j], desc->stream[i]->stream_id);
#endif
sprintf(b,"stream=%u;rule=%u,", desc->stream[i]->stream_id, rulematches[j]);
*stream_rules = xbuffer_strcat(*stream_rules, b);
}
if (!desc->stream[i]->mlti_data) {
len = 0;
buf = xbuffer_free(buf);
} else
len=select_mlti_data(desc->stream[i]->mlti_data, desc->stream[i]->mlti_data_size, rulematches[0], &buf);
header->streams[i]=rmff_new_mdpr(
desc->stream[i]->stream_id,
desc->stream[i]->max_bit_rate,
desc->stream[i]->avg_bit_rate,
desc->stream[i]->max_packet_size,
desc->stream[i]->avg_packet_size,
desc->stream[i]->start_time,
desc->stream[i]->preroll,
desc->stream[i]->duration,
desc->stream[i]->stream_name,
desc->stream[i]->mime_type,
len,
buf);
duration=FFMAX(duration,desc->stream[i]->duration);
max_bit_rate+=desc->stream[i]->max_bit_rate;
avg_bit_rate+=desc->stream[i]->avg_bit_rate;
max_packet_size=FFMAX(max_packet_size, desc->stream[i]->max_packet_size);
if (avg_packet_size)
avg_packet_size=(avg_packet_size + desc->stream[i]->avg_packet_size) / 2;
else
avg_packet_size=desc->stream[i]->avg_packet_size;
}
if (*stream_rules && strlen(*stream_rules) && (*stream_rules)[strlen(*stream_rules)-1] == ',')
(*stream_rules)[strlen(*stream_rules)-1]=0; /* delete last ',' in stream_rules */
header->prop=rmff_new_prop(
max_bit_rate,
avg_bit_rate,
max_packet_size,
avg_packet_size,
0,
duration,
0,
0,
0,
desc->stream_count,
desc->flags);
rmff_fix_header(header);
buf = xbuffer_free(buf);
sdpplin_free(desc);
return header;
}
rmff_header_t *real_setup_and_get_header(rtsp_t *rtsp_session, uint32_t bandwidth,
char *username, char *password) {
char *description=NULL;
char *session_id=NULL;
rmff_header_t *h = NULL;
char *challenge1 = NULL;
char challenge2[41];
char checksum[9];
char *subscribe = NULL;
char *buf = xbuffer_init(256);
char *mrl=rtsp_get_mrl(rtsp_session);
unsigned int size;
int status;
uint32_t maxbandwidth = bandwidth;
char* authfield = NULL;
int i;
/* get challenge */
challenge1=rtsp_search_answers(rtsp_session,"RealChallenge1");
if (!challenge1)
goto out;
challenge1=strdup(challenge1);
#ifdef LOG
printf("real: Challenge1: %s\n", challenge1);
#endif
/* set a reasonable default to get the best stream, unless bandwidth given */
if (!bandwidth)
bandwidth = 10485800;
/* request stream description */
rtsp_send_describe:
rtsp_schedule_field(rtsp_session, "Accept: application/sdp");
sprintf(buf, "Bandwidth: %u", bandwidth);
rtsp_schedule_field(rtsp_session, buf);
rtsp_schedule_field(rtsp_session, "GUID: 00000000-0000-0000-0000-000000000000");
rtsp_schedule_field(rtsp_session, "RegionData: 0");
rtsp_schedule_field(rtsp_session, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586");
rtsp_schedule_field(rtsp_session, "SupportsMaximumASMBandwidth: 1");
rtsp_schedule_field(rtsp_session, "Language: en-US");
rtsp_schedule_field(rtsp_session, "Require: com.real.retain-entity-for-setup");
if(authfield)
rtsp_schedule_field(rtsp_session, authfield);
status=rtsp_request_describe(rtsp_session,NULL);
if (status == 401) {
int authlen, b64_authlen;
char *authreq;
char* authstr = NULL;
if (authfield) {
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: authorization failed, check your credentials\n");
goto autherr;
}
if (!(authreq = rtsp_search_answers(rtsp_session,"WWW-Authenticate"))) {
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: 401 but no auth request, aborting\n");
goto autherr;
}
if (!username) {
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: auth required but no username supplied\n");
goto autherr;
}
if (!strstr(authreq, "Basic")) {
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: authenticator not supported (%s)\n", authreq);
goto autherr;
}
authlen = strlen(username) + (password ? strlen(password) : 0) + 2;
authstr = malloc(authlen);
sprintf(authstr, "%s:%s", username, password ? password : "");
authfield = malloc(authlen*2+22);
strcpy(authfield, "Authorization: Basic ");
b64_authlen = base64_encode(authstr, authlen, authfield+21, authlen*2);
free(authstr);
if (b64_authlen < 0) {
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: base64 output overflow, this should never happen\n");
goto autherr;
}
authfield[b64_authlen+21] = 0;
goto rtsp_send_describe;
}
autherr:
if (authfield)
free(authfield);
if ( status<200 || status>299 )
{
char *alert=rtsp_search_answers(rtsp_session,"Alert");
if (alert) {
mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: got message from server:\n%s\n",
alert);
}
rtsp_send_ok(rtsp_session);
goto out;
}
/* receive description */
size=0;
if (!rtsp_search_answers(rtsp_session,"Content-length"))
mp_msg(MSGT_STREAM, MSGL_WARN, "real: got no Content-length!\n");
else
size=atoi(rtsp_search_answers(rtsp_session,"Content-length"));
// as size is unsigned this also catches the case (size < 0)
if (size > MAX_DESC_BUF) {
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: Content-length for description too big (> %uMB)!\n",
MAX_DESC_BUF/(1024*1024) );
goto out;
}
if (!rtsp_search_answers(rtsp_session,"ETag"))
mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: got no ETag!\n");
else
session_id=strdup(rtsp_search_answers(rtsp_session,"ETag"));
#ifdef LOG
printf("real: Stream description size: %u\n", size);
#endif
description=malloc(size+1);
if( rtsp_read_data(rtsp_session, description, size) <= 0) {
goto out;
}
description[size]=0;
/* parse sdp (sdpplin) and create a header and a subscribe string */
subscribe = xbuffer_init(256);
strcpy(subscribe, "Subscribe: ");
h=real_parse_sdp(description, &subscribe, bandwidth);
if (!h) {
goto out;
}
rmff_fix_header(h);
#ifdef LOG
printf("Title: %s\nCopyright: %s\nAuthor: %s\nStreams: %i\n",
h->cont->title, h->cont->copyright, h->cont->author, h->prop->num_streams);
#endif
/* setup our streams */
real_calc_response_and_checksum (challenge2, checksum, challenge1);
buf = xbuffer_ensure_size(buf, strlen(challenge2) + strlen(checksum) + 32);
sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum);
rtsp_schedule_field(rtsp_session, buf);
buf = xbuffer_ensure_size(buf, strlen(session_id) + 32);
sprintf(buf, "If-Match: %s", session_id);
rtsp_schedule_field(rtsp_session, buf);
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
buf = xbuffer_ensure_size(buf, strlen(mrl) + 32);
sprintf(buf, "%s/streamid=0", mrl);
rtsp_request_setup(rtsp_session,buf,NULL);
/* Do setup for all the other streams we subscribed to */
for (i = 1; i < h->prop->num_streams; i++) {
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
buf = xbuffer_ensure_size(buf, strlen(session_id) + 32);
sprintf(buf, "If-Match: %s", session_id);
rtsp_schedule_field(rtsp_session, buf);
buf = xbuffer_ensure_size(buf, strlen(mrl) + 32);
sprintf(buf, "%s/streamid=%d", mrl, i);
rtsp_request_setup(rtsp_session,buf,NULL);
}
/* set stream parameter (bandwidth) with our subscribe string */
rtsp_schedule_field(rtsp_session, subscribe);
rtsp_request_setparameter(rtsp_session,NULL);
/* set delivery bandwidth */
if (maxbandwidth) {
sprintf(buf, "SetDeliveryBandwidth: Bandwidth=%u;BackOff=0", maxbandwidth);
rtsp_schedule_field(rtsp_session, buf);
rtsp_request_setparameter(rtsp_session,NULL);
}
{
int s_ss = 0, s_ms = 0, e_ss = 0, e_ms = 0;
char *str;
if ((str = rtsp_get_param(rtsp_session, "start"))) {
convert_timestamp(str, &s_ss, &s_ms);
free(str);
}
if ((str = rtsp_get_param(rtsp_session, "end"))) {
convert_timestamp(str, &e_ss, &e_ms);
free(str);
}
str = buf + sprintf(buf, s_ms ? "%s%d.%d-" : "%s%d-", "Range: npt=", s_ss, s_ms);
if (e_ss || e_ms)
sprintf(str, e_ms ? "%d.%d" : "%d", e_ss, e_ms);
}
rtsp_schedule_field(rtsp_session, buf);
/* and finally send a play request */
rtsp_request_play(rtsp_session,NULL);
out:
subscribe = xbuffer_free(subscribe);
buf = xbuffer_free(buf);
free(description);
free(session_id);
free(challenge1);
return h;
}
/*
* parse sdp(stream description) lines.
*
* subscribe is "Subscribe: " which is send with SET_PARAMETER request.
*
*/
struct rmff_header_t *real_parse_sdp(char *data,char **subscribe,int bw)
{
struct sdpreal_t *desc;
struct list_h *p;
struct rmff_header_t *rmff_header;
uint8_t *buf;
int *matched; /* array of matched rules. malloced in find_asmrule_match */
int matched_rules;
int i,j;
int mlti_data_len;
int subscribe_len = BUFSIZE_1K;
char subbuf[32];
int duration =0;
int max_bit_rate = 0;
int avg_bit_rate = 0;
int max_packet_size = 0;
int avg_packet_size = 0;
desc = sdpreal_parse(data);
rmff_header = new_rmff_header_t();
rmff_header->fileheader = new_rmff_fileheader(4 + desc->stream_count);
rmff_header->cont = new_rmff_cont(desc->title,desc->author,
desc->copyright,desc->abstract);
rmff_header->data = new_rmff_dataheader(0,0);
rmff_header->streams =
(rmff_mdpr_t**)xmalloc(sizeof(struct rmff_mdpr_t*) * (desc->stream_count + 1));
display(MSDL_VER,"number of streams: %u\n",desc->stream_count);
*subscribe = (char *)xmalloc(subscribe_len);
strcpy(*subscribe,"Subscribe: ");
for(i = 0,p = desc->streams; i < desc->stream_count; i++,p = p->next) {
struct sdpreal_stream_t *stream = (sdpreal_stream_t *)p->p;
/* Subscribe: stream=0;rule=16,stream=0;rule=17 */
matched_rules = find_asmrule_match(stream->asm_rule_book,
&matched,bw);
if((strlen(*subscribe) + 32 * matched_rules) > subscribe_len) {
/* subscribe should be longer */
subscribe_len = (subscribe_len * 2 >
strlen(*subscribe) + 32 * matched_rules) ?
subscribe_len * 2 : strlen(*subscribe) + 32 * matched_rules;
*subscribe = (char *)xrealloc(*subscribe,subscribe_len);
}
for(j = 0; j < matched_rules ; j++) {
snprintf(subbuf,sizeof(subbuf),"stream=%u;rule=%u,",i,matched[j]);
strcat(*subscribe,subbuf);
}
buf = NULL;
if(!stream->mlti_data) {
mlti_data_len = 0;
}
else {
/* buf is malloc()ed inside select_mlti_data */
mlti_data_len = select_mlti_data(stream->mlti_data,
stream->mlti_data_size,
matched[0],&buf);
}
rmff_header->streams[i] =
new_rmff_mdpr(stream->stream_id,
stream->max_bit_rate,
stream->avg_bit_rate,
stream->max_packet_size,
stream->avg_packet_size,
stream->start_time,
stream->preroll,
stream->duration,
stream->stream_name,
stream->mime_type,
mlti_data_len,
buf);
duration = (duration > stream->duration) ?
duration : stream->duration;
max_bit_rate += stream->max_bit_rate;
avg_bit_rate += stream->avg_bit_rate;
max_packet_size = (max_packet_size > stream->max_packet_size) ?
max_packet_size : stream->max_packet_size;
if(avg_packet_size) {
avg_packet_size = (avg_packet_size + stream->avg_packet_size) / 2;
}
else {
avg_packet_size = stream->avg_packet_size;
}
if(matched) {
free(matched);
matched = NULL;
}
if(buf) {
free(buf);
buf = NULL;
}
}
if((*subscribe)[strlen(*subscribe) -1 ] == ',') {
(*subscribe)[strlen(*subscribe) -1 ] = '\0'; /* delete last comma */
}
rmff_header->prop =
new_rmff_prop(max_bit_rate,
avg_bit_rate,
max_packet_size,
avg_packet_size,
0,
duration,
0,0,0,
desc->stream_count,
desc->flags);
rmff_fix_header(rmff_header);
free_sdpreal_t(desc);
rmff_print_header(rmff_header);
return rmff_header;
}
