1 /*****************************************************************************
2 * real.c: real rtsp input
3 *****************************************************************************
4 * Copyright (C) 2002-2004 the xine project
5 * Copyright (C) 2005 VideoLAN
6 * $Id: file.c 10310 2005-03-11 22:36:40Z anil $
8 * Authors: Gildas Bazin <gbazin@videolan.org>
9 * Adapted from xine which itself adapted it from joschkas real tools.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
32 #include "real_sdpplin.h"
34 const unsigned char xor_table[] = {
35 0x05, 0x18, 0x74, 0xd0, 0x0d, 0x09, 0x02, 0x53,
36 0xc0, 0x01, 0x05, 0x05, 0x67, 0x03, 0x19, 0x70,
37 0x08, 0x27, 0x66, 0x10, 0x10, 0x72, 0x08, 0x09,
38 0x63, 0x11, 0x03, 0x71, 0x08, 0x08, 0x70, 0x02,
39 0x10, 0x57, 0x05, 0x18, 0x54, 0x00, 0x00, 0x00 };
41 #define BE_32(x) GetDWBE(x)
42 #define LE_32(x) GetDWLE(x)
43 #define BE_16(x) GetWBE(x)
44 #define LE_16(x) GetWLE(x)
45 #define BE_32C(x,y) do {uint32_t in=y; *(uint32_t *)(x)=GetDWBE(&in);} while(0)
46 #define LE_32C(x,y) do {uint32_t in=y; *(uint32_t *)(x)=GetDWLE(&in);} while(0)
47 #define MAX(x,y) ((x>y) ? x : y)
50 static void hash(char *field, char *param) {
61 lprintf("hash input: %x %x %x %x\n", a, b, c, d);
62 lprintf("hash parameter:\n");
64 a = ((b & c) | (~b & d)) + LE_32((param+0x00)) + a - 0x28955B88;
65 a = ((a << 0x07) | (a >> 0x19)) + b;
66 d = ((a & b) | (~a & c)) + LE_32((param+0x04)) + d - 0x173848AA;
67 d = ((d << 0x0c) | (d >> 0x14)) + a;
68 c = ((d & a) | (~d & b)) + LE_32((param+0x08)) + c + 0x242070DB;
69 c = ((c << 0x11) | (c >> 0x0f)) + d;
70 b = ((c & d) | (~c & a)) + LE_32((param+0x0c)) + b - 0x3E423112;
71 b = ((b << 0x16) | (b >> 0x0a)) + c;
72 a = ((b & c) | (~b & d)) + LE_32((param+0x10)) + a - 0x0A83F051;
73 a = ((a << 0x07) | (a >> 0x19)) + b;
74 d = ((a & b) | (~a & c)) + LE_32((param+0x14)) + d + 0x4787C62A;
75 d = ((d << 0x0c) | (d >> 0x14)) + a;
76 c = ((d & a) | (~d & b)) + LE_32((param+0x18)) + c - 0x57CFB9ED;
77 c = ((c << 0x11) | (c >> 0x0f)) + d;
78 b = ((c & d) | (~c & a)) + LE_32((param+0x1c)) + b - 0x02B96AFF;
79 b = ((b << 0x16) | (b >> 0x0a)) + c;
80 a = ((b & c) | (~b & d)) + LE_32((param+0x20)) + a + 0x698098D8;
81 a = ((a << 0x07) | (a >> 0x19)) + b;
82 d = ((a & b) | (~a & c)) + LE_32((param+0x24)) + d - 0x74BB0851;
83 d = ((d << 0x0c) | (d >> 0x14)) + a;
84 c = ((d & a) | (~d & b)) + LE_32((param+0x28)) + c - 0x0000A44F;
85 c = ((c << 0x11) | (c >> 0x0f)) + d;
86 b = ((c & d) | (~c & a)) + LE_32((param+0x2C)) + b - 0x76A32842;
87 b = ((b << 0x16) | (b >> 0x0a)) + c;
88 a = ((b & c) | (~b & d)) + LE_32((param+0x30)) + a + 0x6B901122;
89 a = ((a << 0x07) | (a >> 0x19)) + b;
90 d = ((a & b) | (~a & c)) + LE_32((param+0x34)) + d - 0x02678E6D;
91 d = ((d << 0x0c) | (d >> 0x14)) + a;
92 c = ((d & a) | (~d & b)) + LE_32((param+0x38)) + c - 0x5986BC72;
93 c = ((c << 0x11) | (c >> 0x0f)) + d;
94 b = ((c & d) | (~c & a)) + LE_32((param+0x3c)) + b + 0x49B40821;
95 b = ((b << 0x16) | (b >> 0x0a)) + c;
97 a = ((b & d) | (~d & c)) + LE_32((param+0x04)) + a - 0x09E1DA9E;
98 a = ((a << 0x05) | (a >> 0x1b)) + b;
99 d = ((a & c) | (~c & b)) + LE_32((param+0x18)) + d - 0x3FBF4CC0;
100 d = ((d << 0x09) | (d >> 0x17)) + a;
101 c = ((d & b) | (~b & a)) + LE_32((param+0x2c)) + c + 0x265E5A51;
102 c = ((c << 0x0e) | (c >> 0x12)) + d;
103 b = ((c & a) | (~a & d)) + LE_32((param+0x00)) + b - 0x16493856;
104 b = ((b << 0x14) | (b >> 0x0c)) + c;
105 a = ((b & d) | (~d & c)) + LE_32((param+0x14)) + a - 0x29D0EFA3;
106 a = ((a << 0x05) | (a >> 0x1b)) + b;
107 d = ((a & c) | (~c & b)) + LE_32((param+0x28)) + d + 0x02441453;
108 d = ((d << 0x09) | (d >> 0x17)) + a;
109 c = ((d & b) | (~b & a)) + LE_32((param+0x3c)) + c - 0x275E197F;
110 c = ((c << 0x0e) | (c >> 0x12)) + d;
111 b = ((c & a) | (~a & d)) + LE_32((param+0x10)) + b - 0x182C0438;
112 b = ((b << 0x14) | (b >> 0x0c)) + c;
113 a = ((b & d) | (~d & c)) + LE_32((param+0x24)) + a + 0x21E1CDE6;
114 a = ((a << 0x05) | (a >> 0x1b)) + b;
115 d = ((a & c) | (~c & b)) + LE_32((param+0x38)) + d - 0x3CC8F82A;
116 d = ((d << 0x09) | (d >> 0x17)) + a;
117 c = ((d & b) | (~b & a)) + LE_32((param+0x0c)) + c - 0x0B2AF279;
118 c = ((c << 0x0e) | (c >> 0x12)) + d;
119 b = ((c & a) | (~a & d)) + LE_32((param+0x20)) + b + 0x455A14ED;
120 b = ((b << 0x14) | (b >> 0x0c)) + c;
121 a = ((b & d) | (~d & c)) + LE_32((param+0x34)) + a - 0x561C16FB;
122 a = ((a << 0x05) | (a >> 0x1b)) + b;
123 d = ((a & c) | (~c & b)) + LE_32((param+0x08)) + d - 0x03105C08;
124 d = ((d << 0x09) | (d >> 0x17)) + a;
125 c = ((d & b) | (~b & a)) + LE_32((param+0x1c)) + c + 0x676F02D9;
126 c = ((c << 0x0e) | (c >> 0x12)) + d;
127 b = ((c & a) | (~a & d)) + LE_32((param+0x30)) + b - 0x72D5B376;
128 b = ((b << 0x14) | (b >> 0x0c)) + c;
130 a = (b ^ c ^ d) + LE_32((param+0x14)) + a - 0x0005C6BE;
131 a = ((a << 0x04) | (a >> 0x1c)) + b;
132 d = (a ^ b ^ c) + LE_32((param+0x20)) + d - 0x788E097F;
133 d = ((d << 0x0b) | (d >> 0x15)) + a;
134 c = (d ^ a ^ b) + LE_32((param+0x2c)) + c + 0x6D9D6122;
135 c = ((c << 0x10) | (c >> 0x10)) + d;
136 b = (c ^ d ^ a) + LE_32((param+0x38)) + b - 0x021AC7F4;
137 b = ((b << 0x17) | (b >> 0x09)) + c;
138 a = (b ^ c ^ d) + LE_32((param+0x04)) + a - 0x5B4115BC;
139 a = ((a << 0x04) | (a >> 0x1c)) + b;
140 d = (a ^ b ^ c) + LE_32((param+0x10)) + d + 0x4BDECFA9;
141 d = ((d << 0x0b) | (d >> 0x15)) + a;
142 c = (d ^ a ^ b) + LE_32((param+0x1c)) + c - 0x0944B4A0;
143 c = ((c << 0x10) | (c >> 0x10)) + d;
144 b = (c ^ d ^ a) + LE_32((param+0x28)) + b - 0x41404390;
145 b = ((b << 0x17) | (b >> 0x09)) + c;
146 a = (b ^ c ^ d) + LE_32((param+0x34)) + a + 0x289B7EC6;
147 a = ((a << 0x04) | (a >> 0x1c)) + b;
148 d = (a ^ b ^ c) + LE_32((param+0x00)) + d - 0x155ED806;
149 d = ((d << 0x0b) | (d >> 0x15)) + a;
150 c = (d ^ a ^ b) + LE_32((param+0x0c)) + c - 0x2B10CF7B;
151 c = ((c << 0x10) | (c >> 0x10)) + d;
152 b = (c ^ d ^ a) + LE_32((param+0x18)) + b + 0x04881D05;
153 b = ((b << 0x17) | (b >> 0x09)) + c;
154 a = (b ^ c ^ d) + LE_32((param+0x24)) + a - 0x262B2FC7;
155 a = ((a << 0x04) | (a >> 0x1c)) + b;
156 d = (a ^ b ^ c) + LE_32((param+0x30)) + d - 0x1924661B;
157 d = ((d << 0x0b) | (d >> 0x15)) + a;
158 c = (d ^ a ^ b) + LE_32((param+0x3c)) + c + 0x1fa27cf8;
159 c = ((c << 0x10) | (c >> 0x10)) + d;
160 b = (c ^ d ^ a) + LE_32((param+0x08)) + b - 0x3B53A99B;
161 b = ((b << 0x17) | (b >> 0x09)) + c;
163 a = ((~d | b) ^ c) + LE_32((param+0x00)) + a - 0x0BD6DDBC;
164 a = ((a << 0x06) | (a >> 0x1a)) + b;
165 d = ((~c | a) ^ b) + LE_32((param+0x1c)) + d + 0x432AFF97;
166 d = ((d << 0x0a) | (d >> 0x16)) + a;
167 c = ((~b | d) ^ a) + LE_32((param+0x38)) + c - 0x546BDC59;
168 c = ((c << 0x0f) | (c >> 0x11)) + d;
169 b = ((~a | c) ^ d) + LE_32((param+0x14)) + b - 0x036C5FC7;
170 b = ((b << 0x15) | (b >> 0x0b)) + c;
171 a = ((~d | b) ^ c) + LE_32((param+0x30)) + a + 0x655B59C3;
172 a = ((a << 0x06) | (a >> 0x1a)) + b;
173 d = ((~c | a) ^ b) + LE_32((param+0x0C)) + d - 0x70F3336E;
174 d = ((d << 0x0a) | (d >> 0x16)) + a;
175 c = ((~b | d) ^ a) + LE_32((param+0x28)) + c - 0x00100B83;
176 c = ((c << 0x0f) | (c >> 0x11)) + d;
177 b = ((~a | c) ^ d) + LE_32((param+0x04)) + b - 0x7A7BA22F;
178 b = ((b << 0x15) | (b >> 0x0b)) + c;
179 a = ((~d | b) ^ c) + LE_32((param+0x20)) + a + 0x6FA87E4F;
180 a = ((a << 0x06) | (a >> 0x1a)) + b;
181 d = ((~c | a) ^ b) + LE_32((param+0x3c)) + d - 0x01D31920;
182 d = ((d << 0x0a) | (d >> 0x16)) + a;
183 c = ((~b | d) ^ a) + LE_32((param+0x18)) + c - 0x5CFEBCEC;
184 c = ((c << 0x0f) | (c >> 0x11)) + d;
185 b = ((~a | c) ^ d) + LE_32((param+0x34)) + b + 0x4E0811A1;
186 b = ((b << 0x15) | (b >> 0x0b)) + c;
187 a = ((~d | b) ^ c) + LE_32((param+0x10)) + a - 0x08AC817E;
188 a = ((a << 0x06) | (a >> 0x1a)) + b;
189 d = ((~c | a) ^ b) + LE_32((param+0x2c)) + d - 0x42C50DCB;
190 d = ((d << 0x0a) | (d >> 0x16)) + a;
191 c = ((~b | d) ^ a) + LE_32((param+0x08)) + c + 0x2AD7D2BB;
192 c = ((c << 0x0f) | (c >> 0x11)) + d;
193 b = ((~a | c) ^ d) + LE_32((param+0x24)) + b - 0x14792C6F;
194 b = ((b << 0x15) | (b >> 0x0b)) + c;
196 lprintf("hash output: %x %x %x %x\n", a, b, c, d);
201 d += LE_32(field+12);
209 static void call_hash (char *key, char *challenge, int len) {
211 uint8_t *ptr1, *ptr2;
212 uint32_t a, b, c, d, tmp;
224 lprintf("not verified: (len << 3) > a true\n");
228 tmp = LE_32(ptr2) + (len >> 0x1d);
235 memcpy(key+b+24, challenge, a);
241 lprintf("not verified: while ( d < len )\n");
242 hash(key, challenge+d-0x3f);
249 memcpy(key+b+24, challenge+c, len-c);
252 static void calc_response (char *result, char *field) {
258 memset (buf1, 0, 64);
261 memcpy (buf2, field+16, 8);
263 i = ( LE_32((buf2)) >> 3 ) & 0x3f;
268 lprintf("not verified: ! (i < 56)\n");
272 call_hash (field, buf1, i);
273 call_hash (field, buf2, 8);
275 memcpy (result, field, 16);
280 static void calc_response_string (char *result, char *challenge) {
286 /* initialize our field */
287 BE_32C (field, 0x01234567);
288 BE_32C ((field+4), 0x89ABCDEF);
289 BE_32C ((field+8), 0xFEDCBA98);
290 BE_32C ((field+12), 0x76543210);
291 BE_32C ((field+16), 0x00000000);
292 BE_32C ((field+20), 0x00000000);
294 /* calculate response */
295 call_hash(field, challenge, 64);
296 calc_response(zres,field);
298 /* convert zres to ascii string */
299 for (i=0; i<16; i++ ) {
302 a = (zres[i] >> 4) & 15;
305 result[i*2] = ((a<10) ? (a+48) : (a+87)) & 255;
306 result[i*2+1] = ((b<10) ? (b+48) : (b+87)) & 255;
310 void real_calc_response_and_checksum (char *response, char *chksum, char *challenge) {
312 int ch_len, table_len, resp_len;
317 /* initialize return values */
318 memset(response, 0, 64);
319 memset(chksum, 0, 34);
321 /* initialize buffer */
324 BE_32C(ptr, 0xa1e9149d);
326 BE_32C(ptr, 0x0e6b3b59);
329 /* some (length) checks */
330 if (challenge != NULL)
332 ch_len = strlen (challenge);
334 if (ch_len == 40) /* what a hack... */
339 if ( ch_len > 56 ) ch_len=56;
341 /* copy challenge to buf */
342 memcpy(ptr, challenge, ch_len);
345 if (xor_table != NULL)
347 table_len = strlen(xor_table);
349 if (table_len > 56) table_len=56;
351 /* xor challenge bytewise with xor_table */
352 for (i=0; i<table_len; i++)
353 ptr[i] = ptr[i] ^ xor_table[i];
356 calc_response_string (response, buf);
359 resp_len = strlen (response);
360 strcpy (&response[resp_len], "01d0a8e3");
362 /* calculate checksum */
363 for (i=0; i<resp_len/4; i++)
364 chksum[i] = response[i*4];
369 * takes a MLTI-Chunk and a rule number got from match_asm_rule,
370 * returns a pointer to selected data and number of bytes in that.
373 static int select_mlti_data(const char *mlti_chunk, int mlti_size, int selection, char **out) {
375 int numrules, codec, size;
378 /* MLTI chunk should begin with MLTI */
380 if ((mlti_chunk[0] != 'M')
381 ||(mlti_chunk[1] != 'L')
382 ||(mlti_chunk[2] != 'T')
383 ||(mlti_chunk[3] != 'I'))
385 lprintf("MLTI tag not detected, copying data\n");
386 memcpy(*out, mlti_chunk, mlti_size);
392 /* next 16 bits are the number of rules */
393 numrules=BE_16(mlti_chunk);
394 if (selection >= numrules) return 0;
396 /* now <numrules> indices of codecs follows */
397 /* we skip to selection */
398 mlti_chunk+=(selection+1)*2;
401 codec=BE_16(mlti_chunk);
403 /* skip to number of codecs */
404 mlti_chunk+=(numrules-selection)*2;
406 /* get number of codecs */
407 numrules=BE_16(mlti_chunk);
409 if (codec >= numrules) {
410 lprintf("codec index >= number of codecs. %i %i\n", codec, numrules);
416 /* now seek to selected codec */
417 for (i=0; i<codec; i++) {
418 size=BE_32(mlti_chunk);
422 size=BE_32(mlti_chunk);
424 memcpy(*out, mlti_chunk+4, size);
429 * looking at stream description.
432 rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidth) {
435 rmff_header_t *header;
440 int max_packet_size=0;
441 int avg_packet_size=0;
445 if (!data) return NULL;
447 desc=sdpplin_parse(data);
449 if (!desc) return NULL;
452 header = malloc(sizeof(rmff_header_t));
453 memset(header, 0, sizeof(rmff_header_t));
455 header->fileheader=rmff_new_fileheader(4+desc->stream_count);
456 header->cont=rmff_new_cont(
461 header->data=rmff_new_dataheader(0,0);
462 header->streams = malloc(sizeof(rmff_mdpr_t*)*(desc->stream_count+1));
463 memset(header->streams, 0, sizeof(rmff_mdpr_t*)*(desc->stream_count+1));
464 lprintf("number of streams: %u\n", desc->stream_count);
466 for (i=0; i<desc->stream_count; i++) {
473 lprintf("calling asmrp_match with:\n%s\n%u\n", desc->stream[i]->asm_rule_book, bandwidth);
475 n=asmrp_match(desc->stream[i]->asm_rule_book, bandwidth, rulematches);
476 for (j=0; j<n; j++) {
477 lprintf("asmrp rule match: %u for stream %u\n", rulematches[j], desc->stream[i]->stream_id);
478 sprintf(b,"stream=%u;rule=%u,", desc->stream[i]->stream_id, rulematches[j]);
479 strcat(*stream_rules, b);
482 if (!desc->stream[i]->mlti_data) {
487 len=select_mlti_data(desc->stream[i]->mlti_data, desc->stream[i]->mlti_data_size, rulematches[0], &buf);
489 header->streams[i]=rmff_new_mdpr(
490 desc->stream[i]->stream_id,
491 desc->stream[i]->max_bit_rate,
492 desc->stream[i]->avg_bit_rate,
493 desc->stream[i]->max_packet_size,
494 desc->stream[i]->avg_packet_size,
495 desc->stream[i]->start_time,
496 desc->stream[i]->preroll,
497 desc->stream[i]->duration,
498 desc->stream[i]->stream_name,
499 desc->stream[i]->mime_type,
503 duration=MAX(duration,desc->stream[i]->duration);
504 max_bit_rate+=desc->stream[i]->max_bit_rate;
505 avg_bit_rate+=desc->stream[i]->avg_bit_rate;
506 max_packet_size=MAX(max_packet_size, desc->stream[i]->max_packet_size);
508 avg_packet_size=(avg_packet_size + desc->stream[i]->avg_packet_size) / 2;
510 avg_packet_size=desc->stream[i]->avg_packet_size;
513 if (*stream_rules && strlen(*stream_rules) && (*stream_rules)[strlen(*stream_rules)-1] == ',')
514 (*stream_rules)[strlen(*stream_rules)-1]=0; /* delete last ',' in stream_rules */
516 header->prop=rmff_new_prop(
529 rmff_fix_header(header);
535 int real_get_rdt_chunk(rtsp_client_t *rtsp_session, unsigned char **buffer) {
545 n=rtsp_read_data(rtsp_session, header, 8);
547 if (header[0] != 0x24)
549 lprintf("rdt chunk not recognized: got 0x%02x\n", header[0]);
552 size=(header[1]<<16)+(header[2]<<8)+(header[3]);
554 if ((flags1!=0x40)&&(flags1!=0x42))
556 lprintf("got flags1: 0x%02x\n",flags1);
559 lprintf("got end of stream packet\n");
565 n=rtsp_read_data(rtsp_session, header+3, 5);
567 lprintf("ignoring bytes:\n");
568 n=rtsp_read_data(rtsp_session, header+4, 4);
573 unknown1=(header[5]<<16)+(header[6]<<8)+(header[7]);
574 n=rtsp_read_data(rtsp_session, header, 6);
579 lprintf("ts: %u size: %u, flags: 0x%02x, unknown values: %u 0x%02x 0x%02x\n",
580 ts, size, flags1, unknown1, header[4], header[5]);
587 ph.stream_number=(flags1>>1)&1;
590 ph.flags=0; /* TODO: determine keyframe flag and insert here? */
591 //xine_buffer_ensure_size(*buffer, 12+size);
592 rmff_dump_pheader(&ph, *buffer);
594 n=rtsp_read_data(rtsp_session, (*buffer)+12, size);
596 return (n <= 0) ? 0 : n+12;
599 //! maximum size of the rtsp description, must be < INT_MAX
600 #define MAX_DESC_BUF (20 * 1024 * 1024)
601 rmff_header_t *real_setup_and_get_header(rtsp_client_t *rtsp_session, int bandwidth) {
603 char *description=NULL;
604 char *session_id=NULL;
610 char *buf=malloc(256);
611 char *mrl=rtsp_get_mrl(rtsp_session);
616 challenge1=strdup(rtsp_search_answers(rtsp_session,"RealChallenge1"));
617 lprintf("Challenge1: %s\n", challenge1);
619 /* request stream description */
620 rtsp_schedule_field(rtsp_session, "Accept: application/sdp");
621 sprintf(buf, "Bandwidth: %u", bandwidth);
622 rtsp_schedule_field(rtsp_session, buf);
623 rtsp_schedule_field(rtsp_session, "GUID: 00000000-0000-0000-0000-000000000000");
624 rtsp_schedule_field(rtsp_session, "RegionData: 0");
625 rtsp_schedule_field(rtsp_session, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586");
626 rtsp_schedule_field(rtsp_session, "SupportsMaximumASMBandwidth: 1");
627 rtsp_schedule_field(rtsp_session, "Language: en-US");
628 rtsp_schedule_field(rtsp_session, "Require: com.real.retain-entity-for-setup");
629 status=rtsp_request_describe(rtsp_session,NULL);
631 if ( status<200 || status>299 )
633 char *alert=rtsp_search_answers(rtsp_session,"Alert");
635 lprintf("real: got message from server:\n%s\n", alert);
638 rtsp_send_ok(rtsp_session);
643 /* receive description */
645 if (!rtsp_search_answers(rtsp_session,"Content-length"))
646 lprintf("real: got no Content-length!\n");
648 size=atoi(rtsp_search_answers(rtsp_session,"Content-length"));
650 if (size > MAX_DESC_BUF) {
651 printf("real: Content-length for description too big (> %uMB)!\n",
652 MAX_DESC_BUF/(1024*1024) );
657 if (!rtsp_search_answers(rtsp_session,"ETag"))
658 lprintf("real: got no ETag!\n");
660 session_id=strdup(rtsp_search_answers(rtsp_session,"ETag"));
662 lprintf("Stream description size: %i\n", size);
664 description = malloc(sizeof(char)*(size+1));
666 if( rtsp_read_data(rtsp_session, description, size) <= 0) {
672 fprintf(stderr,description);
673 /* parse sdp (sdpplin) and create a header and a subscribe string */
674 subscribe=malloc(256);
675 strcpy(subscribe, "Subscribe: ");
676 h=real_parse_sdp(description, &subscribe, bandwidth);
685 fprintf("Title: %s\nCopyright: %s\nAuthor: %s\nStreams: %i\n",
686 h->cont->title, h->cont->copyright, h->cont->author, h->prop->num_streams);
689 /* setup our streams */
690 real_calc_response_and_checksum (challenge2, checksum, challenge1);
691 buf = realloc(buf, strlen(challenge2) + strlen(checksum) + 32);
692 sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum);
693 rtsp_schedule_field(rtsp_session, buf);
694 buf = realloc(buf, strlen(session_id) + 32);
695 sprintf(buf, "If-Match: %s", session_id);
696 rtsp_schedule_field(rtsp_session, buf);
697 rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
698 buf = realloc(buf, strlen(mrl) + 32);
699 sprintf(buf, "%s/streamid=0", mrl);
700 rtsp_request_setup(rtsp_session,buf);
702 if (h->prop->num_streams > 1) {
703 rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
704 buf = realloc(buf, strlen(session_id) + 32);
705 sprintf(buf, "If-Match: %s", session_id);
706 rtsp_schedule_field(rtsp_session, buf);
708 buf = realloc(buf, strlen(mrl) + 32);
709 sprintf(buf, "%s/streamid=1", mrl);
710 rtsp_request_setup(rtsp_session,buf);
712 /* set stream parameter (bandwidth) with our subscribe string */
713 rtsp_schedule_field(rtsp_session, subscribe);
714 rtsp_request_setparameter(rtsp_session,NULL);
716 /* and finally send a play request */
717 rtsp_schedule_field(rtsp_session, "Range: npt=0-");
718 rtsp_request_play(rtsp_session,NULL);