real.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:22k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * real.c: real rtsp input
- *****************************************************************************
- * Copyright (C) 2002-2004 the xine project
- * Copyright (C) 2005 VideoLAN
- * $Id: c74bdf427858c70216e4fc089aa793286f2a13c4 $
- *
- * Authors: Gildas Bazin <gbazin@videolan.org>
- * Adapted from xine which itself adapted it from joschkas real tools.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include "rtsp.h"
- #include "real.h"
- #include "real_sdpplin.h"
- #define XOR_TABLE_LEN 37
- static const unsigned char xor_table[] = {
- 0x05, 0x18, 0x74, 0xd0, 0x0d, 0x09, 0x02, 0x53,
- 0xc0, 0x01, 0x05, 0x05, 0x67, 0x03, 0x19, 0x70,
- 0x08, 0x27, 0x66, 0x10, 0x10, 0x72, 0x08, 0x09,
- 0x63, 0x11, 0x03, 0x71, 0x08, 0x08, 0x70, 0x02,
- 0x10, 0x57, 0x05, 0x18, 0x54, 0x00, 0x00, 0x00 };
- #define BE_32(x) GetDWBE(x)
- #define LE_32(x) GetDWLE(x)
- #define BE_16(x) GetWBE(x)
- #define LE_16(x) GetWLE(x)
- #define BE_32C(x,y) do {uint32_t in=y; *(uint32_t *)(x)=GetDWBE(&in);} while(0)
- #define LE_32C(x,y) do {uint32_t in=y; *(uint32_t *)(x)=GetDWLE(&in);} while(0)
- #define MAX(x,y) ((x>y) ? x : y)
- static void hash(char *field, char *param)
- {
- uint32_t a, b, c, d;
- /* fill variables */
- a = LE_32(field);
- b = LE_32(field+4);
- c = LE_32(field+8);
- d = LE_32(field+12);
- lprintf("hash input: %x %x %x %xn", a, b, c, d);
- lprintf("hash parameter:n");
- a = ((b & c) | (~b & d)) + LE_32((param+0x00)) + a - 0x28955B88;
- a = ((a << 0x07) | (a >> 0x19)) + b;
- d = ((a & b) | (~a & c)) + LE_32((param+0x04)) + d - 0x173848AA;
- d = ((d << 0x0c) | (d >> 0x14)) + a;
- c = ((d & a) | (~d & b)) + LE_32((param+0x08)) + c + 0x242070DB;
- c = ((c << 0x11) | (c >> 0x0f)) + d;
- b = ((c & d) | (~c & a)) + LE_32((param+0x0c)) + b - 0x3E423112;
- b = ((b << 0x16) | (b >> 0x0a)) + c;
- a = ((b & c) | (~b & d)) + LE_32((param+0x10)) + a - 0x0A83F051;
- a = ((a << 0x07) | (a >> 0x19)) + b;
- d = ((a & b) | (~a & c)) + LE_32((param+0x14)) + d + 0x4787C62A;
- d = ((d << 0x0c) | (d >> 0x14)) + a;
- c = ((d & a) | (~d & b)) + LE_32((param+0x18)) + c - 0x57CFB9ED;
- c = ((c << 0x11) | (c >> 0x0f)) + d;
- b = ((c & d) | (~c & a)) + LE_32((param+0x1c)) + b - 0x02B96AFF;
- b = ((b << 0x16) | (b >> 0x0a)) + c;
- a = ((b & c) | (~b & d)) + LE_32((param+0x20)) + a + 0x698098D8;
- a = ((a << 0x07) | (a >> 0x19)) + b;
- d = ((a & b) | (~a & c)) + LE_32((param+0x24)) + d - 0x74BB0851;
- d = ((d << 0x0c) | (d >> 0x14)) + a;
- c = ((d & a) | (~d & b)) + LE_32((param+0x28)) + c - 0x0000A44F;
- c = ((c << 0x11) | (c >> 0x0f)) + d;
- b = ((c & d) | (~c & a)) + LE_32((param+0x2C)) + b - 0x76A32842;
- b = ((b << 0x16) | (b >> 0x0a)) + c;
- a = ((b & c) | (~b & d)) + LE_32((param+0x30)) + a + 0x6B901122;
- a = ((a << 0x07) | (a >> 0x19)) + b;
- d = ((a & b) | (~a & c)) + LE_32((param+0x34)) + d - 0x02678E6D;
- d = ((d << 0x0c) | (d >> 0x14)) + a;
- c = ((d & a) | (~d & b)) + LE_32((param+0x38)) + c - 0x5986BC72;
- c = ((c << 0x11) | (c >> 0x0f)) + d;
- b = ((c & d) | (~c & a)) + LE_32((param+0x3c)) + b + 0x49B40821;
- b = ((b << 0x16) | (b >> 0x0a)) + c;
- a = ((b & d) | (~d & c)) + LE_32((param+0x04)) + a - 0x09E1DA9E;
- a = ((a << 0x05) | (a >> 0x1b)) + b;
- d = ((a & c) | (~c & b)) + LE_32((param+0x18)) + d - 0x3FBF4CC0;
- d = ((d << 0x09) | (d >> 0x17)) + a;
- c = ((d & b) | (~b & a)) + LE_32((param+0x2c)) + c + 0x265E5A51;
- c = ((c << 0x0e) | (c >> 0x12)) + d;
- b = ((c & a) | (~a & d)) + LE_32((param+0x00)) + b - 0x16493856;
- b = ((b << 0x14) | (b >> 0x0c)) + c;
- a = ((b & d) | (~d & c)) + LE_32((param+0x14)) + a - 0x29D0EFA3;
- a = ((a << 0x05) | (a >> 0x1b)) + b;
- d = ((a & c) | (~c & b)) + LE_32((param+0x28)) + d + 0x02441453;
- d = ((d << 0x09) | (d >> 0x17)) + a;
- c = ((d & b) | (~b & a)) + LE_32((param+0x3c)) + c - 0x275E197F;
- c = ((c << 0x0e) | (c >> 0x12)) + d;
- b = ((c & a) | (~a & d)) + LE_32((param+0x10)) + b - 0x182C0438;
- b = ((b << 0x14) | (b >> 0x0c)) + c;
- a = ((b & d) | (~d & c)) + LE_32((param+0x24)) + a + 0x21E1CDE6;
- a = ((a << 0x05) | (a >> 0x1b)) + b;
- d = ((a & c) | (~c & b)) + LE_32((param+0x38)) + d - 0x3CC8F82A;
- d = ((d << 0x09) | (d >> 0x17)) + a;
- c = ((d & b) | (~b & a)) + LE_32((param+0x0c)) + c - 0x0B2AF279;
- c = ((c << 0x0e) | (c >> 0x12)) + d;
- b = ((c & a) | (~a & d)) + LE_32((param+0x20)) + b + 0x455A14ED;
- b = ((b << 0x14) | (b >> 0x0c)) + c;
- a = ((b & d) | (~d & c)) + LE_32((param+0x34)) + a - 0x561C16FB;
- a = ((a << 0x05) | (a >> 0x1b)) + b;
- d = ((a & c) | (~c & b)) + LE_32((param+0x08)) + d - 0x03105C08;
- d = ((d << 0x09) | (d >> 0x17)) + a;
- c = ((d & b) | (~b & a)) + LE_32((param+0x1c)) + c + 0x676F02D9;
- c = ((c << 0x0e) | (c >> 0x12)) + d;
- b = ((c & a) | (~a & d)) + LE_32((param+0x30)) + b - 0x72D5B376;
- b = ((b << 0x14) | (b >> 0x0c)) + c;
- a = (b ^ c ^ d) + LE_32((param+0x14)) + a - 0x0005C6BE;
- a = ((a << 0x04) | (a >> 0x1c)) + b;
- d = (a ^ b ^ c) + LE_32((param+0x20)) + d - 0x788E097F;
- d = ((d << 0x0b) | (d >> 0x15)) + a;
- c = (d ^ a ^ b) + LE_32((param+0x2c)) + c + 0x6D9D6122;
- c = ((c << 0x10) | (c >> 0x10)) + d;
- b = (c ^ d ^ a) + LE_32((param+0x38)) + b - 0x021AC7F4;
- b = ((b << 0x17) | (b >> 0x09)) + c;
- a = (b ^ c ^ d) + LE_32((param+0x04)) + a - 0x5B4115BC;
- a = ((a << 0x04) | (a >> 0x1c)) + b;
- d = (a ^ b ^ c) + LE_32((param+0x10)) + d + 0x4BDECFA9;
- d = ((d << 0x0b) | (d >> 0x15)) + a;
- c = (d ^ a ^ b) + LE_32((param+0x1c)) + c - 0x0944B4A0;
- c = ((c << 0x10) | (c >> 0x10)) + d;
- b = (c ^ d ^ a) + LE_32((param+0x28)) + b - 0x41404390;
- b = ((b << 0x17) | (b >> 0x09)) + c;
- a = (b ^ c ^ d) + LE_32((param+0x34)) + a + 0x289B7EC6;
- a = ((a << 0x04) | (a >> 0x1c)) + b;
- d = (a ^ b ^ c) + LE_32((param+0x00)) + d - 0x155ED806;
- d = ((d << 0x0b) | (d >> 0x15)) + a;
- c = (d ^ a ^ b) + LE_32((param+0x0c)) + c - 0x2B10CF7B;
- c = ((c << 0x10) | (c >> 0x10)) + d;
- b = (c ^ d ^ a) + LE_32((param+0x18)) + b + 0x04881D05;
- b = ((b << 0x17) | (b >> 0x09)) + c;
- a = (b ^ c ^ d) + LE_32((param+0x24)) + a - 0x262B2FC7;
- a = ((a << 0x04) | (a >> 0x1c)) + b;
- d = (a ^ b ^ c) + LE_32((param+0x30)) + d - 0x1924661B;
- d = ((d << 0x0b) | (d >> 0x15)) + a;
- c = (d ^ a ^ b) + LE_32((param+0x3c)) + c + 0x1fa27cf8;
- c = ((c << 0x10) | (c >> 0x10)) + d;
- b = (c ^ d ^ a) + LE_32((param+0x08)) + b - 0x3B53A99B;
- b = ((b << 0x17) | (b >> 0x09)) + c;
- a = ((~d | b) ^ c) + LE_32((param+0x00)) + a - 0x0BD6DDBC;
- a = ((a << 0x06) | (a >> 0x1a)) + b;
- d = ((~c | a) ^ b) + LE_32((param+0x1c)) + d + 0x432AFF97;
- d = ((d << 0x0a) | (d >> 0x16)) + a;
- c = ((~b | d) ^ a) + LE_32((param+0x38)) + c - 0x546BDC59;
- c = ((c << 0x0f) | (c >> 0x11)) + d;
- b = ((~a | c) ^ d) + LE_32((param+0x14)) + b - 0x036C5FC7;
- b = ((b << 0x15) | (b >> 0x0b)) + c;
- a = ((~d | b) ^ c) + LE_32((param+0x30)) + a + 0x655B59C3;
- a = ((a << 0x06) | (a >> 0x1a)) + b;
- d = ((~c | a) ^ b) + LE_32((param+0x0C)) + d - 0x70F3336E;
- d = ((d << 0x0a) | (d >> 0x16)) + a;
- c = ((~b | d) ^ a) + LE_32((param+0x28)) + c - 0x00100B83;
- c = ((c << 0x0f) | (c >> 0x11)) + d;
- b = ((~a | c) ^ d) + LE_32((param+0x04)) + b - 0x7A7BA22F;
- b = ((b << 0x15) | (b >> 0x0b)) + c;
- a = ((~d | b) ^ c) + LE_32((param+0x20)) + a + 0x6FA87E4F;
- a = ((a << 0x06) | (a >> 0x1a)) + b;
- d = ((~c | a) ^ b) + LE_32((param+0x3c)) + d - 0x01D31920;
- d = ((d << 0x0a) | (d >> 0x16)) + a;
- c = ((~b | d) ^ a) + LE_32((param+0x18)) + c - 0x5CFEBCEC;
- c = ((c << 0x0f) | (c >> 0x11)) + d;
- b = ((~a | c) ^ d) + LE_32((param+0x34)) + b + 0x4E0811A1;
- b = ((b << 0x15) | (b >> 0x0b)) + c;
- a = ((~d | b) ^ c) + LE_32((param+0x10)) + a - 0x08AC817E;
- a = ((a << 0x06) | (a >> 0x1a)) + b;
- d = ((~c | a) ^ b) + LE_32((param+0x2c)) + d - 0x42C50DCB;
- d = ((d << 0x0a) | (d >> 0x16)) + a;
- c = ((~b | d) ^ a) + LE_32((param+0x08)) + c + 0x2AD7D2BB;
- c = ((c << 0x0f) | (c >> 0x11)) + d;
- b = ((~a | c) ^ d) + LE_32((param+0x24)) + b - 0x14792C6F;
- b = ((b << 0x15) | (b >> 0x0b)) + c;
- lprintf("hash output: %x %x %x %xn", a, b, c, d);
- a += LE_32(field);
- b += LE_32(field+4);
- c += LE_32(field+8);
- d += LE_32(field+12);
- LE_32C(field, a);
- LE_32C(field+4, b);
- LE_32C(field+8, c);
- LE_32C(field+12, d);
- }
- static void call_hash (char *key, char *challenge, unsigned int len) {
- uint8_t *ptr1, *ptr2;
- uint32_t a, b, c, d, tmp;
- ptr1=(uint8_t*)(key+16);
- ptr2=(uint8_t*)(key+20);
- a = LE_32(ptr1);
- b = (a >> 3) & 0x3f;
- a += len * 8;
- LE_32C(ptr1, a);
- if (a < (len << 3))
- {
- lprintf("not verified: (len << 3) > a truen");
- ptr2 += 4;
- }
- tmp = LE_32(ptr2) + (len >> 0x1d);
- LE_32C(ptr2, tmp);
- a = 64 - b;
- c = 0;
- if (a <= len)
- {
- memcpy(key+b+24, challenge, a);
- hash(key, key+24);
- c = a;
- d = c + 0x3f;
- while ( d < len ) {
- lprintf("not verified: while ( d < len )n");
- hash(key, challenge+d-0x3f);
- d += 64;
- c += 64;
- }
- b = 0;
- }
- memcpy(key+b+24, challenge+c, len-c);
- }
- static void calc_response (char *result, char *field) {
- char buf1[128];
- char buf2[128];
- int i;
- memset (buf1, 0, 64);
- *buf1 = 128;
- memcpy (buf2, field+16, 8);
- i = ( LE_32((buf2)) >> 3 ) & 0x3f;
- if (i < 56)
- {
- i = 56 - i;
- } else
- {
- lprintf("not verified: ! (i < 56)n");
- i = 120 - i;
- }
- call_hash (field, buf1, i);
- call_hash (field, buf2, 8);
- memcpy (result, field, 16);
- }
- static void calc_response_string (char *result, char *challenge) {
- char field[128] = {
- 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
- 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- };
- char zres[20];
- int i;
- /* calculate response */
- call_hash(field, challenge, 64);
- calc_response(zres,field);
- /* convert zres to ascii string */
- for (i=0; i<16; i++ ) {
- char a, b;
- a = (zres[i] >> 4) & 15;
- b = zres[i] & 15;
- result[i*2] = ((a<10) ? (a+48) : (a+87)) & 255;
- result[i*2+1] = ((b<10) ? (b+48) : (b+87)) & 255;
- }
- }
- void real_calc_response_and_checksum (char *response, char *chksum, char *challenge) {
- int ch_len, resp_len;
- int i;
- char *ptr;
- char buf[128];
- /* initialize return values */
- memset(response, 0, 64);
- memset(chksum, 0, 34);
- /* initialize buffer */
- memset(buf, 0, 128);
- ptr=buf;
- BE_32C(ptr, 0xa1e9149d);
- ptr+=4;
- BE_32C(ptr, 0x0e6b3b59);
- ptr+=4;
- /* some (length) checks */
- if (challenge != NULL)
- {
- ch_len = strlen (challenge);
- if (ch_len == 40) /* what a hack... */
- {
- challenge[32]=0;
- ch_len=32;
- }
- if ( ch_len > 56 ) ch_len=56;
- /* copy challenge to buf */
- memcpy(ptr, challenge, ch_len);
- }
- /* xor challenge bytewise with xor_table */
- for (i=0; i<XOR_TABLE_LEN; i++)
- ptr[i] = ptr[i] ^ xor_table[i];
- calc_response_string (response, buf);
- /* add tail */
- resp_len = strlen (response);
- strcpy (&response[resp_len], "01d0a8e3");
- /* calculate checksum */
- for (i=0; i<resp_len/4; i++)
- chksum[i] = response[i*4];
- }
- /*
- * takes a MLTI-Chunk and a rule number got from match_asm_rule,
- * returns a pointer to selected data and number of bytes in that.
- */
- static int select_mlti_data(const char *mlti_chunk, int mlti_size, int selection, char **out) {
- int numrules, codec, size;
- int i;
- /* MLTI chunk should begin with MLTI */
- if ((mlti_chunk[0] != 'M')
- ||(mlti_chunk[1] != 'L')
- ||(mlti_chunk[2] != 'T')
- ||(mlti_chunk[3] != 'I'))
- {
- lprintf("MLTI tag not detected, copying datan");
- memcpy(*out, mlti_chunk, mlti_size);
- return mlti_size;
- }
- mlti_chunk+=4;
- /* next 16 bits are the number of rules */
- numrules=BE_16(mlti_chunk);
- if (selection >= numrules) return 0;
- /* now <numrules> indices of codecs follows */
- /* we skip to selection */
- mlti_chunk+=(selection+1)*2;
- /* get our index */
- codec=BE_16(mlti_chunk);
- /* skip to number of codecs */
- mlti_chunk+=(numrules-selection)*2;
- /* get number of codecs */
- numrules=BE_16(mlti_chunk);
- if (codec >= numrules) {
- lprintf("codec index >= number of codecs. %i %in", codec, numrules);
- return 0;
- }
- mlti_chunk+=2;
- /* now seek to selected codec */
- for (i=0; i<codec; i++) {
- size=BE_32(mlti_chunk);
- mlti_chunk+=size+4;
- }
- size=BE_32(mlti_chunk);
- memcpy(*out, mlti_chunk+4, size);
- return size;
- }
- /*
- * looking at stream description.
- */
- rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidth) {
- sdpplin_t *desc = NULL;
- rmff_header_t *header = NULL;
- char *buf = NULL;
- 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= (char *)malloc(2048);
- if( !buf ) goto error;
- header = calloc( 1, sizeof(rmff_header_t) );
- if( !header ) goto error;
- 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);
- if( !header->data ) goto error;
- header->streams = calloc( desc->stream_count+1, sizeof(rmff_mdpr_t*) );
- if( !header->streams ) goto error;
- lprintf("number of streams: %un", desc->stream_count);
- for (i=0; i<desc->stream_count; i++) {
- int j=0;
- int n;
- char b[64];
- int rulematches[16];
- lprintf("calling asmrp_match with:n%sn%un", desc->stream[i]->asm_rule_book, bandwidth);
- n=asmrp_match(desc->stream[i]->asm_rule_book, bandwidth, rulematches, sizeof(rulematches)/sizeof(rulematches[0]));
- for (j=0; j<n; j++) {
- lprintf("asmrp rule match: %u for stream %un", rulematches[j], desc->stream[i]->stream_id);
- sprintf(b,"stream=%u;rule=%u,", desc->stream[i]->stream_id, rulematches[j]);
- strcat(*stream_rules, b);
- }
- if (!desc->stream[i]->mlti_data) {
- len = 0;
- free( buf );
- buf = NULL;
- } 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);
- if( !header->streams[i] ) goto error;
- duration=MAX(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=MAX(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);
- if( !header->prop ) goto error;
- rmff_fix_header(header);
- if( desc ) sdpplin_free( desc );
- free( buf );
- return header;
- error:
- if( desc ) sdpplin_free( desc );
- if( header ) rmff_free_header( header );
- free( buf );
- return NULL;
- }
- int real_get_rdt_chunk_header(rtsp_client_t *rtsp_session, rmff_pheader_t *ph) {
- int n=1;
- uint8_t header[8];
- int size;
- int flags1;
- int unknown1;
- uint32_t ts;
- n=rtsp_read_data(rtsp_session, header, 8);
- if (n<8) return 0;
- if (header[0] != 0x24)
- {
- lprintf("rdt chunk not recognized: got 0x%02xn", header[0]);
- return 0;
- }
- size=(header[1]<<16)+(header[2]<<8)+(header[3]);
- flags1=header[4];
- if ((flags1!=0x40)&&(flags1!=0x42))
- {
- lprintf("got flags1: 0x%02xn",flags1);
- if (header[6]==0x06)
- {
- lprintf("got end of stream packetn");
- return 0;
- }
- header[0]=header[5];
- header[1]=header[6];
- header[2]=header[7];
- n=rtsp_read_data(rtsp_session, header+3, 5);
- if (n<5) return 0;
- lprintf("ignoring bytes:n");
- n=rtsp_read_data(rtsp_session, header+4, 4);
- if (n<4) return 0;
- flags1=header[4];
- size-=9;
- }
- unknown1=(header[5]<<16)+(header[6]<<8)+(header[7]);
- n=rtsp_read_data(rtsp_session, header, 6);
- if (n<6) return 0;
- ts=BE_32(header);
- #if 0
- lprintf("ts: %u size: %u, flags: 0x%02x, unknown values: %u 0x%02x 0x%02xn",
- ts, size, flags1, unknown1, header[4], header[5]);
- #endif
- size+=2;
- ph->object_version=0;
- ph->length=size;
- ph->stream_number=(flags1>>1)&1;
- ph->timestamp=ts;
- ph->reserved=0;
- ph->flags=0; /* TODO: determine keyframe flag and insert here? */
- return size;
- }
- int real_get_rdt_chunk(rtsp_client_t *rtsp_session, rmff_pheader_t *ph,
- unsigned char **buffer) {
- int n;
- rmff_dump_pheader(ph, (char*)*buffer);
- if (ph->length<12) return 0;
- n=rtsp_read_data(rtsp_session, (uint8_t*)(*buffer + 12), ph->length - 12);
- return (n <= 0) ? 0 : n+12;
- }
- //! maximum size of the rtsp description, must be < INT_MAX
- #define MAX_DESC_BUF (20 * 1024 * 1024)
- rmff_header_t *real_setup_and_get_header(rtsp_client_t *rtsp_session, int bandwidth) {
- char *description=NULL;
- char *session_id=NULL;
- rmff_header_t *h=NULL;
- char *challenge1 = NULL;
- char challenge2[64];
- char checksum[34];
- char *subscribe=NULL;
- char *buf = malloc(256);
- if( !buf )
- return NULL;
- char *mrl=rtsp_get_mrl(rtsp_session);
- unsigned int size;
- int status;
- /* get challenge */
- challenge1=strdup(rtsp_search_answers(rtsp_session,"RealChallenge1"));
- lprintf("Challenge1: %sn", challenge1);
- /* request stream description */
- 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");
- status=rtsp_request_describe(rtsp_session,NULL);
- if ( status<200 || status>299 ) {
- char *alert=rtsp_search_answers(rtsp_session,"Alert");
- if (alert) {
- lprintf("real: got message from server:n%sn", alert);
- }
- rtsp_send_ok( rtsp_session );
- free( challenge1 );
- free( alert );
- free( buf );
- return NULL;
- }
- /* receive description */
- size=0;
- if (!rtsp_search_answers(rtsp_session,"Content-length"))
- lprintf("real: got no Content-length!n");
- else
- size=atoi(rtsp_search_answers(rtsp_session,"Content-length"));
- if (size > MAX_DESC_BUF) {
- printf("real: Content-length for description too big (> %uMB)!n",
- MAX_DESC_BUF/(1024*1024) );
- goto error;
- }
- if (!rtsp_search_answers(rtsp_session,"ETag"))
- lprintf("real: got no ETag!n");
- else
- session_id=strdup(rtsp_search_answers(rtsp_session,"ETag"));
- lprintf("Stream description size: %in", size);
- description = malloc(size+1);
- if( !description )
- goto error;
- if( rtsp_read_data(rtsp_session, (uint8_t*)description, size) <= 0)
- goto error;
- description[size]=0;
- //fprintf(stderr, "%s", description);
- /* parse sdp (sdpplin) and create a header and a subscribe string */
- subscribe = malloc(256);
- if( !subscribe )
- goto error;
- strcpy(subscribe, "Subscribe: ");
- h=real_parse_sdp(description, &subscribe, bandwidth);
- if (!h)
- goto error;
- rmff_fix_header(h);
- #if 0
- fprintf("Title: %snCopyright: %snAuthor: %snStreams: %in",
- 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 = realloc(buf, strlen(challenge2) + strlen(checksum) + 32);
- sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum);
- rtsp_schedule_field(rtsp_session, buf);
- buf = realloc(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 = realloc(buf, strlen(mrl) + 32);
- sprintf(buf, "%s/streamid=0", mrl);
- rtsp_request_setup(rtsp_session,buf);
- if (h->prop->num_streams > 1) {
- rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
- buf = realloc(buf, strlen(session_id) + 32);
- sprintf(buf, "If-Match: %s", session_id);
- rtsp_schedule_field(rtsp_session, buf);
- buf = realloc(buf, strlen(mrl) + 32);
- sprintf(buf, "%s/streamid=1", mrl);
- rtsp_request_setup(rtsp_session,buf);
- }
- /* set stream parameter (bandwidth) with our subscribe string */
- rtsp_schedule_field(rtsp_session, subscribe);
- rtsp_request_setparameter(rtsp_session,NULL);
- /* and finally send a play request */
- rtsp_schedule_field(rtsp_session, "Range: npt=0-");
- rtsp_request_play(rtsp_session,NULL);
- free( challenge1 );
- free( session_id );
- free( description );
- free( subscribe );
- free( buf );
- return h;
- error:
- if( h ) rmff_free_header( h );
- free( challenge1 );
- free( session_id );
- free( description );
- free( subscribe );
- free( buf );
- return NULL;
- }