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[xine-cvs] CVS: xine-lib/src/input/libreal Makefile.am,NONE,1.1 asmrp.c,NONE,1.1 asmrp.h,NONE,1.1 real.c,NONE,1.1 real.h,NONE,1.1 rmff.c,NONE,1.1 rmff.h,NONE,1.1
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From: Stefan H. <ho...@us...> - 2002-12-12 22:14:58
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Update of /cvsroot/xine/xine-lib/src/input/libreal
In directory sc8-pr-cvs1:/tmp/cvs-serv806/libreal
Added Files:
Makefile.am asmrp.c asmrp.h real.c real.h rmff.c rmff.h
Log Message:
The rest of rtsp input plugin; sorry.
--- NEW FILE: Makefile.am ---
REAL_CFLAGS = -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
AM_CFLAGS = $(REAL_CFLAGS) @ANSI_FLAGS@
noinst_LTLIBRARIES = libreal.la
libreal_la_SOURCES = \
real.c \
asmrp.c \
rmff.c
libreal_la_LDFLAGS = $(THREAD_LIBS) -avoid-version -module
noinst_HEADERS = \
real.h \
asmrp.h \
rmff.h
debug:
@$(MAKE) CFLAGS="$(DEBUG_CFLAGS) $(DVD_CFLAGS)"
install-debug: debug
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
mostlyclean-generic:
-rm -f *~ \#* .*~ .\#*
maintainer-clean-generic:
-@echo "This command is intended for maintainers to use;"
-@echo "it deletes files that may require special tools to rebuild."
-rm -f Makefile.in
--- NEW FILE: asmrp.c ---
/*
* Copyright (C) 2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: asmrp.c,v 1.1 2002/12/12 22:14:54 holstsn Exp $
*
* a parser for real's asm rules
*
* grammar for these rules:
*
rule_book = { rule }
rule = ( '#' condition { ',' assignment } | [ assignment {',' assignment} ]) ';'
assignment = id '=' const
const = ( number | string )
condition = comp_expr { ( '&&' | '||' ) comp_expr }
comp_expr = operand { ( '<' | '<=' | '==' | '>=' | '>' ) operand }
operand = ( '$' id | num | '(' condition ')' )
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/*
#define LOG
*/
#define ASMRP_SYM_NONE 0
#define ASMRP_SYM_EOF 1
#define ASMRP_SYM_NUM 2
#define ASMRP_SYM_ID 3
#define ASMRP_SYM_STRING 4
#define ASMRP_SYM_HASH 10
#define ASMRP_SYM_SEMICOLON 11
#define ASMRP_SYM_COMMA 12
#define ASMRP_SYM_EQUALS 13
#define ASMRP_SYM_AND 14
#define ASMRP_SYM_OR 15
#define ASMRP_SYM_LESS 16
#define ASMRP_SYM_LEQ 17
#define ASMRP_SYM_GEQ 18
#define ASMRP_SYM_GREATER 19
#define ASMRP_SYM_DOLLAR 20
#define ASMRP_SYM_LPAREN 21
#define ASMRP_SYM_RPAREN 22
#define ASMRP_MAX_ID 1024
#define ASMRP_MAX_SYMTAB 10
typedef struct {
char *id;
int v;
} asmrp_sym_t;
typedef struct {
/* public part */
int sym;
int num;
char str[ASMRP_MAX_ID];
/* private part */
char *buf;
int pos;
char ch;
asmrp_sym_t sym_tab[ASMRP_MAX_SYMTAB];
int sym_tab_num;
} asmrp_t;
static asmrp_t *asmrp_new () {
asmrp_t *p;
p = malloc (sizeof (asmrp_t));
p->sym_tab_num = 0;
p->sym = ASMRP_SYM_NONE;
return p;
}
static void asmrp_dispose (asmrp_t *p) {
int i;
for (i=0; i<p->sym_tab_num; i++)
free (p->sym_tab[i].id);
free (p);
}
static void asmrp_getch (asmrp_t *p) {
p->ch = p->buf[p->pos];
p->pos++;
#ifdef LOG
printf ("%c\n", p->ch);
#endif
}
static void asmrp_init (asmrp_t *p, const char *str) {
p->buf = strdup (str);
p->pos = 0;
asmrp_getch (p);
}
static void asmrp_number (asmrp_t *p) {
int num;
num = 0;
while ( (p->ch>='0') && (p->ch<='9') ) {
num = num*10 + (p->ch - '0');
asmrp_getch (p);
}
p->sym = ASMRP_SYM_NUM;
p->num = num;
}
static void asmrp_string (asmrp_t *p) {
int l;
l = 0;
while ( (p->ch!='"') && (p->ch>=32) ) {
p->str[l] = p->ch;
l++;
asmrp_getch (p);
}
p->str[l]=0;
if (p->ch=='"')
asmrp_getch (p);
p->sym = ASMRP_SYM_STRING;
}
static void asmrp_identifier (asmrp_t *p) {
int l;
l = 0;
while ( ((p->ch>='A') && (p->ch<='z'))
|| ((p->ch>='0') && (p->ch<='9'))) {
p->str[l] = p->ch;
l++;
asmrp_getch (p);
}
p->str[l]=0;
p->sym = ASMRP_SYM_ID;
}
#ifdef LOG
static void asmrp_print_sym (asmrp_t *p) {
printf ("symbol: ");
switch (p->sym) {
case ASMRP_SYM_NONE:
printf ("NONE\n");
break;
case ASMRP_SYM_EOF:
printf ("EOF\n");
break;
case ASMRP_SYM_NUM:
printf ("NUM %d\n", p->num);
break;
case ASMRP_SYM_ID:
printf ("ID '%s'\n", p->str);
break;
case ASMRP_SYM_STRING:
printf ("STRING \"%s\"\n", p->str);
break;
case ASMRP_SYM_HASH:
printf ("#\n");
break;
case ASMRP_SYM_SEMICOLON:
printf (";\n");
break;
case ASMRP_SYM_COMMA:
printf (",\n");
break;
case ASMRP_SYM_EQUALS:
printf ("==\n");
break;
case ASMRP_SYM_AND:
printf ("&&\n");
break;
case ASMRP_SYM_OR:
printf ("||\n");
break;
case ASMRP_SYM_LESS:
printf ("<\n");
break;
case ASMRP_SYM_LEQ:
printf ("<=\n");
break;
case ASMRP_SYM_GEQ:
printf (">=\n");
break;
case ASMRP_SYM_GREATER:
printf (">\n");
break;
case ASMRP_SYM_DOLLAR:
printf ("$\n");
break;
case ASMRP_SYM_LPAREN:
printf ("(\n");
break;
case ASMRP_SYM_RPAREN:
printf (")\n");
break;
default:
printf ("unknown symbol %d\n", p->sym);
}
}
#endif
static void asmrp_get_sym (asmrp_t *p) {
while (p->ch <= 32) {
if (p->ch == 0) {
p->sym = ASMRP_SYM_EOF;
return;
}
asmrp_getch (p);
}
if (p->ch == '\\')
asmrp_getch (p);
switch (p->ch) {
case '#':
p->sym = ASMRP_SYM_HASH;
asmrp_getch (p);
break;
case ';':
p->sym = ASMRP_SYM_SEMICOLON;
asmrp_getch (p);
break;
case ',':
p->sym = ASMRP_SYM_COMMA;
asmrp_getch (p);
break;
case '=':
p->sym = ASMRP_SYM_EQUALS;
asmrp_getch (p);
if (p->ch=='=')
asmrp_getch (p);
break;
case '&':
p->sym = ASMRP_SYM_AND;
asmrp_getch (p);
if (p->ch=='&')
asmrp_getch (p);
break;
case '|':
p->sym = ASMRP_SYM_OR;
asmrp_getch (p);
if (p->ch=='|')
asmrp_getch (p);
break;
case '<':
p->sym = ASMRP_SYM_LESS;
asmrp_getch (p);
if (p->ch=='=') {
p->sym = ASMRP_SYM_LEQ;
asmrp_getch (p);
}
break;
case '>':
p->sym = ASMRP_SYM_GREATER;
asmrp_getch (p);
if (p->ch=='=') {
p->sym = ASMRP_SYM_GEQ;
asmrp_getch (p);
}
break;
case '$':
p->sym = ASMRP_SYM_DOLLAR;
asmrp_getch (p);
break;
case '(':
p->sym = ASMRP_SYM_LPAREN;
asmrp_getch (p);
break;
case ')':
p->sym = ASMRP_SYM_RPAREN;
asmrp_getch (p);
break;
case '"':
asmrp_getch (p);
asmrp_string (p);
break;
case '0' ... '9':
asmrp_number (p);
break;
default:
asmrp_identifier (p);
}
#ifdef LOG
asmrp_print_sym (p);
#endif
}
static int asmrp_find_id (asmrp_t *p, char *s) {
int i;
for (i=0; i<p->sym_tab_num; i++) {
if (!strcmp (s, p->sym_tab[i].id))
return i;
}
return -1;
}
static int asmrp_set_id (asmrp_t *p, char *s, int v) {
int i;
i = asmrp_find_id (p, s);
if (i<0) {
i = p->sym_tab_num;
p->sym_tab_num++;
p->sym_tab[i].id = strdup (s);
#ifdef LOG
printf ("new symbol '%s'\n", s);
#endif
}
p->sym_tab[i].v = v;
#ifdef LOG
printf ("symbol '%s' assigned %d\n", s, v);
#endif
return i;
}
static int asmrp_condition (asmrp_t *p) ;
static int asmrp_operand (asmrp_t *p) {
int i, ret;
#ifdef LOG
printf ("operand\n");
#endif
ret = 0;
switch (p->sym) {
case ASMRP_SYM_DOLLAR:
asmrp_get_sym (p);
if (p->sym != ASMRP_SYM_ID) {
printf ("error: identifier expected.\n");
abort();
}
i = asmrp_find_id (p, p->str);
if (i<0) {
printf ("error: unknown identifier %s\n", p->str);
}
ret = p->sym_tab[i].v;
asmrp_get_sym (p);
break;
case ASMRP_SYM_NUM:
ret = p->num;
asmrp_get_sym (p);
break;
case ASMRP_SYM_LPAREN:
asmrp_get_sym (p);
ret = asmrp_condition (p);
if (p->sym != ASMRP_SYM_RPAREN) {
printf ("error: ) expected.\n");
abort();
}
asmrp_get_sym (p);
break;
default:
printf ("syntax error, $ number or ( expected\n");
abort();
}
#ifdef LOG
printf ("operand done, =%d\n", ret);
#endif
return ret;
}
static int asmrp_comp_expression (asmrp_t *p) {
int a;
#ifdef LOG
printf ("comp_expression\n");
#endif
a = asmrp_operand (p);
while ( (p->sym == ASMRP_SYM_LESS)
|| (p->sym == ASMRP_SYM_LEQ)
|| (p->sym == ASMRP_SYM_EQUALS)
|| (p->sym == ASMRP_SYM_GEQ)
|| (p->sym == ASMRP_SYM_GREATER) ) {
int op = p->sym;
int b;
asmrp_get_sym (p);
b = asmrp_operand (p);
switch (op) {
case ASMRP_SYM_LESS:
a = a<b;
break;
case ASMRP_SYM_LEQ:
a = a<=b;
break;
case ASMRP_SYM_EQUALS:
a = a==b;
break;
case ASMRP_SYM_GEQ:
a = a>=b;
break;
case ASMRP_SYM_GREATER:
a = a>b;
break;
}
}
#ifdef LOG
printf ("comp_expression done = %d\n", a);
#endif
return a;
}
static int asmrp_condition (asmrp_t *p) {
int a;
#ifdef LOG
printf ("condition\n");
#endif
a = asmrp_comp_expression (p);
while ( (p->sym == ASMRP_SYM_AND) || (p->sym == ASMRP_SYM_OR) ) {
int op, b;
op = p->sym;
asmrp_get_sym (p);
b = asmrp_comp_expression (p);
switch (op) {
case ASMRP_SYM_AND:
a = a & b;
break;
case ASMRP_SYM_OR:
a = a | b;
break;
}
}
#ifdef LOG
printf ("condition done = %d\n", a);
#endif
return a;
}
static void asmrp_assignment (asmrp_t *p) {
#ifdef LOG
printf ("assignment\n");
#endif
if (p->sym != ASMRP_SYM_ID) {
printf ("error: identifier expected\n");
abort ();
}
asmrp_get_sym (p);
if (p->sym != ASMRP_SYM_EQUALS) {
printf ("error: = expected\n");
abort ();
}
asmrp_get_sym (p);
if ( (p->sym != ASMRP_SYM_NUM) && (p->sym != ASMRP_SYM_STRING)
&& (p->sym != ASMRP_SYM_ID)) {
printf ("error: number or string expected\n");
abort ();
}
asmrp_get_sym (p);
#ifdef LOG
printf ("assignment done\n");
#endif
}
static int asmrp_rule (asmrp_t *p) {
int ret;
#ifdef LOG
printf ("rule\n");
#endif
ret = 1;
if (p->sym == ASMRP_SYM_HASH) {
asmrp_get_sym (p);
ret = asmrp_condition (p);
while (p->sym == ASMRP_SYM_COMMA) {
asmrp_get_sym (p);
asmrp_assignment (p);
}
} else if (p->sym != ASMRP_SYM_SEMICOLON) {
asmrp_assignment (p);
while (p->sym == ASMRP_SYM_COMMA) {
asmrp_get_sym (p);
asmrp_assignment (p);
}
}
#ifdef LOG
printf ("rule done = %d\n", ret);
#endif
if (p->sym != ASMRP_SYM_SEMICOLON) {
printf ("semicolon expected.\n");
abort ();
}
asmrp_get_sym (p);
return ret;
}
static int asmrp_eval (asmrp_t *p, int *matches) {
int rule_num, num_matches;
#ifdef LOG
printf ("eval\n");
#endif
asmrp_get_sym (p);
rule_num = 0; num_matches = 0;
while (p->sym != ASMRP_SYM_EOF) {
if (asmrp_rule (p)) {
#ifdef LOG
printf ("rule #%d is true\n", rule_num);
#endif
matches[num_matches] = rule_num;
num_matches++;
}
rule_num++;
}
matches[num_matches] = -1;
return num_matches;
}
int asmrp_match (const char *rules, int bandwidth, int *matches) {
asmrp_t *p;
int num_matches;
p = asmrp_new ();
asmrp_init (p, rules);
asmrp_set_id (p, "Bandwidth", bandwidth);
asmrp_set_id (p, "OldPNMPlayer", 0);
num_matches = asmrp_eval (p, matches);
asmrp_dispose (p);
return num_matches;
}
--- NEW FILE: asmrp.h ---
/*
* Copyright (C) 2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: asmrp.h,v 1.1 2002/12/12 22:14:54 holstsn Exp $
*
* a parser for real's asm rules
*
* grammar for these rules:
*
rule_book = { '#' rule ';'}
rule = condition {',' assignment}
assignment = id '=' const
const = ( number | string )
condition = comp_expr { ( '&&' | '||' ) comp_expr }
comp_expr = operand { ( '<' | '<=' | '==' | '>=' | '>' ) operand }
operand = ( '$' id | num | '(' condition ')' )
*/
#ifndef HAVE_ASMRP_H
#define HAVE_ASMRP_H
int asmrp_match (const char *rules, int bandwidth, int *matches) ;
#endif
--- NEW FILE: real.c ---
/*
* Copyright (C) 2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: real.c,v 1.1 2002/12/12 22:14:55 holstsn Exp $
*
* special functions for real streams.
* adopted from joschkas real tools.
*
*/
#include <stdio.h>
#include <string.h>
#include "real.h"
#include "asmrp.h"
/*
#define LOG
*/
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_32C(x,y) x[3]=(char)(y & 0xff);\
x[2]=(char)((y >> 8) & 0xff);\
x[1]=(char)((y >> 16) & 0xff);\
x[0]=(char)((y >> 24) & 0xff);
#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
(((uint8_t*)(x))[1] << 16) | \
(((uint8_t*)(x))[2] << 8) | \
((uint8_t*)(x))[3])
#define MAX(x,y) ((x>y) ? x : y)
#ifdef LOG
static void hexdump (const char *buf, int length) {
int i;
printf (" hexdump> ");
for (i = 0; i < length; i++) {
unsigned char c = buf[i];
printf ("%02x", c);
if ((i % 16) == 15)
printf ("\n ");
if ((i % 2) == 1)
printf (" ");
}
printf ("\n");
}
#endif
static void hash(char *field, char *param) {
uint32_t a, b, c, d;
/* fill variables */
memcpy(&a, field, sizeof(uint32_t));
memcpy(&b, &field[4], sizeof(uint32_t));
memcpy(&c, &field[8], sizeof(uint32_t));
memcpy(&d, &field[12], sizeof(uint32_t));
#ifdef LOG
printf("real: hash input: %x %x %x %x\n", a, b, c, d);
printf("real: hash parameter:\n");
hexdump(param, 64);
#endif
a = ((b & c) | (~b & d)) + *((uint32_t*)(param+0x00)) + a - 0x28955B88;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + *((uint32_t*)(param+0x04)) + d - 0x173848AA;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + *((uint32_t*)(param+0x08)) + c + 0x242070DB;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + *((uint32_t*)(param+0x0c)) + b - 0x3E423112;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + *((uint32_t*)(param+0x10)) + a - 0x0A83F051;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + *((uint32_t*)(param+0x14)) + d + 0x4787C62A;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + *((uint32_t*)(param+0x18)) + c - 0x57CFB9ED;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + *((uint32_t*)(param+0x1c)) + b - 0x02B96AFF;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + *((uint32_t*)(param+0x20)) + a + 0x698098D8;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + *((uint32_t*)(param+0x24)) + d - 0x74BB0851;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + *((uint32_t*)(param+0x28)) + c - 0x0000A44F;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + *((uint32_t*)(param+0x2C)) + b - 0x76A32842;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & c) | (~b & d)) + *((uint32_t*)(param+0x30)) + a + 0x6B901122;
a = ((a << 0x07) | (a >> 0x19)) + b;
d = ((a & b) | (~a & c)) + *((uint32_t*)(param+0x34)) + d - 0x02678E6D;
d = ((d << 0x0c) | (d >> 0x14)) + a;
c = ((d & a) | (~d & b)) + *((uint32_t*)(param+0x38)) + c - 0x5986BC72;
c = ((c << 0x11) | (c >> 0x0f)) + d;
b = ((c & d) | (~c & a)) + *((uint32_t*)(param+0x3c)) + b + 0x49B40821;
b = ((b << 0x16) | (b >> 0x0a)) + c;
a = ((b & d) | (~d & c)) + *((uint32_t*)(param+0x04)) + a - 0x09E1DA9E;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + *((uint32_t*)(param+0x18)) + d - 0x3FBF4CC0;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + *((uint32_t*)(param+0x2c)) + c + 0x265E5A51;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + *((uint32_t*)(param+0x00)) + b - 0x16493856;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + *((uint32_t*)(param+0x14)) + a - 0x29D0EFA3;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + *((uint32_t*)(param+0x28)) + d + 0x02441453;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + *((uint32_t*)(param+0x3c)) + c - 0x275E197F;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + *((uint32_t*)(param+0x10)) + b - 0x182C0438;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + *((uint32_t*)(param+0x24)) + a + 0x21E1CDE6;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + *((uint32_t*)(param+0x38)) + d - 0x3CC8F82A;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + *((uint32_t*)(param+0x0c)) + c - 0x0B2AF279;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + *((uint32_t*)(param+0x20)) + b + 0x455A14ED;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = ((b & d) | (~d & c)) + *((uint32_t*)(param+0x34)) + a - 0x561C16FB;
a = ((a << 0x05) | (a >> 0x1b)) + b;
d = ((a & c) | (~c & b)) + *((uint32_t*)(param+0x08)) + d - 0x03105C08;
d = ((d << 0x09) | (d >> 0x17)) + a;
c = ((d & b) | (~b & a)) + *((uint32_t*)(param+0x1c)) + c + 0x676F02D9;
c = ((c << 0x0e) | (c >> 0x12)) + d;
b = ((c & a) | (~a & d)) + *((uint32_t*)(param+0x30)) + b - 0x72D5B376;
b = ((b << 0x14) | (b >> 0x0c)) + c;
a = (b ^ c ^ d) + *((uint32_t*)(param+0x14)) + a - 0x0005C6BE;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + *((uint32_t*)(param+0x20)) + d - 0x788E097F;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + *((uint32_t*)(param+0x2c)) + c + 0x6D9D6122;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + *((uint32_t*)(param+0x38)) + b - 0x021AC7F4;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + *((uint32_t*)(param+0x04)) + a - 0x5B4115BC;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + *((uint32_t*)(param+0x10)) + d + 0x4BDECFA9;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + *((uint32_t*)(param+0x1c)) + c - 0x0944B4A0;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + *((uint32_t*)(param+0x28)) + b - 0x41404390;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + *((uint32_t*)(param+0x34)) + a + 0x289B7EC6;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + *((uint32_t*)(param+0x00)) + d - 0x155ED806;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + *((uint32_t*)(param+0x0c)) + c - 0x2B10CF7B;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + *((uint32_t*)(param+0x18)) + b + 0x04881D05;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = (b ^ c ^ d) + *((uint32_t*)(param+0x24)) + a - 0x262B2FC7;
a = ((a << 0x04) | (a >> 0x1c)) + b;
d = (a ^ b ^ c) + *((uint32_t*)(param+0x30)) + d - 0x1924661B;
d = ((d << 0x0b) | (d >> 0x15)) + a;
c = (d ^ a ^ b) + *((uint32_t*)(param+0x3c)) + c + 0x1fa27cf8;
c = ((c << 0x10) | (c >> 0x10)) + d;
b = (c ^ d ^ a) + *((uint32_t*)(param+0x08)) + b - 0x3B53A99B;
b = ((b << 0x17) | (b >> 0x09)) + c;
a = ((~d | b) ^ c) + *((uint32_t*)(param+0x00)) + a - 0x0BD6DDBC;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + *((uint32_t*)(param+0x1c)) + d + 0x432AFF97;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + *((uint32_t*)(param+0x38)) + c - 0x546BDC59;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + *((uint32_t*)(param+0x14)) + b - 0x036C5FC7;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + *((uint32_t*)(param+0x30)) + a + 0x655B59C3;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + *((uint32_t*)(param+0x0C)) + d - 0x70F3336E;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + *((uint32_t*)(param+0x28)) + c - 0x00100B83;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + *((uint32_t*)(param+0x04)) + b - 0x7A7BA22F;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + *((uint32_t*)(param+0x20)) + a + 0x6FA87E4F;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + *((uint32_t*)(param+0x3c)) + d - 0x01D31920;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + *((uint32_t*)(param+0x18)) + c - 0x5CFEBCEC;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + *((uint32_t*)(param+0x34)) + b + 0x4E0811A1;
b = ((b << 0x15) | (b >> 0x0b)) + c;
a = ((~d | b) ^ c) + *((uint32_t*)(param+0x10)) + a - 0x08AC817E;
a = ((a << 0x06) | (a >> 0x1a)) + b;
d = ((~c | a) ^ b) + *((uint32_t*)(param+0x2c)) + d - 0x42C50DCB;
d = ((d << 0x0a) | (d >> 0x16)) + a;
c = ((~b | d) ^ a) + *((uint32_t*)(param+0x08)) + c + 0x2AD7D2BB;
c = ((c << 0x0f) | (c >> 0x11)) + d;
b = ((~a | c) ^ d) + *((uint32_t*)(param+0x24)) + b - 0x14792C6F;
b = ((b << 0x15) | (b >> 0x0b)) + c;
#ifdef LOG
printf("real: hash output: %x %x %x %x\n", a, b, c, d);
#endif
*((uint32_t *)(field+0)) += a;
*((uint32_t *)(field+4)) += b;
*((uint32_t *)(field+8)) += c;
*((uint32_t *)(field+12)) += d;
}
static void call_hash (char *key, char *challenge, int len) {
uint32_t *ptr1, *ptr2;
uint32_t a, b, c, d;
ptr1=(uint32_t*)(key+16);
ptr2=(uint32_t*)(key+20);
a = *ptr1;
b = (a >> 3) & 0x3f;
a += len * 8;
*ptr1 = a;
if (a < (len << 3))
{
#ifdef LOG
printf("not verified: (len << 3) > a true\n");
#endif
ptr2 += 4;
}
*ptr2 += (len >> 0x1d);
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 ) {
#ifdef LOG
printf("not verified: while ( d < len )\n");
#endif
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 = ( *((uint32_t*)(buf2)) >> 3 ) & 0x3f;
if (i < 56) {
i = 56 - i;
} else {
#ifdef LOG
printf("not verified: ! (i < 56)\n");
#endif
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];
char zres[20];
int i;
/* initialize our field */
BE_32C (field, 0x01234567);
BE_32C ((field+4), 0x89ABCDEF);
BE_32C ((field+8), 0xFEDCBA98);
BE_32C ((field+12), 0x76543210);
BE_32C ((field+16), 0x00000000);
BE_32C ((field+20), 0x00000000);
/* 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, table_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);
}
if (xor_table != NULL)
{
table_len = strlen(xor_table);
if (table_len > 56) table_len=56;
/* xor challenge bytewise with xor_table */
for (i=0; i<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 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'))
{
printf("libreal: MLTI tag not detected\n");
return 0;
}
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) {
printf("codec index >= number of codecs. %i %i\n", 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);
#ifdef LOG
hexdump(mlti_chunk+4, size);
#endif
memcpy(out,mlti_chunk+4, size);
return size;
}
/*
* Decodes base64 strings (based upon b64 package)
*/
static char *b64_decode(const char *in)
{
char dtable[256]; /* Encode / decode table */
int i,j,k;
char *out=malloc(sizeof(char)*strlen(in));
for (i = 0; i < 255; i++) {
dtable[i] = 0x80;
}
for (i = 'A'; i <= 'Z'; i++) {
dtable[i] = 0 + (i - 'A');
}
for (i = 'a'; i <= 'z'; i++) {
dtable[i] = 26 + (i - 'a');
}
for (i = '0'; i <= '9'; i++) {
dtable[i] = 52 + (i - '0');
}
dtable['+'] = 62;
dtable['/'] = 63;
dtable['='] = 0;
k=0;
/*CONSTANTCONDITION*/
for (j=0; j<strlen(in); j+=4)
{
char a[4], b[4];
for (i = 0; i < 4; i++) {
int c = in[i+j];
if (dtable[c] & 0x80) {
printf("Illegal character '%c' in input.\n", c);
exit(1);
}
a[i] = (char) c;
b[i] = (char) dtable[c];
}
out[k++] = (b[0] << 2) | (b[1] >> 4);
out[k++] = (b[1] << 4) | (b[2] >> 2);
out[k++] = (b[2] << 6) | b[3];
i = a[2] == '=' ? 1 : (a[3] == '=' ? 2 : 3);
if (i < 3) {
out[k]=0;
return out;
}
}
out[k]=0;
return out;
}
/*
* looking at stream description.
*/
static int sdp_filter(const char *in, const char *filter, char *out) {
int flen=strlen(filter);
int len=strchr(in,'\n')-in;
if (!strncmp(in,filter,flen))
{
if(in[flen]=='"') flen++;
if(in[len-1]=='"') len--;
memcpy(out, &in[flen], len-flen);
out[len-flen]=0;
return len-flen;
}
return 0;
}
rmff_header_t *real_parse_sdp(const char *data, char *stream_rules, uint32_t bandwidth) {
rmff_header_t *h=malloc(sizeof(rmff_header_t));
rmff_mdpr_t *media=NULL;
char buf[4096];
int rulematches[16];
int n;
int len;
int have_audio=0, have_video=0, stream, sr[2];
stream_rules[0]=0;
h=malloc(sizeof(rmff_header_t));
h->streams=malloc(sizeof(rmff_mdpr_t*)*3);
h->streams[0]=NULL;
h->streams[1]=NULL;
h->streams[2]=NULL;
h->prop=malloc(sizeof(rmff_prop_t));
h->streams[0]=malloc(sizeof(rmff_mdpr_t));
h->streams[1]=malloc(sizeof(rmff_mdpr_t));
h->cont=malloc(sizeof(rmff_cont_t));
h->data=malloc(sizeof(rmff_data_t));
h->fileheader=malloc(sizeof(rmff_fileheader_t));
h->fileheader->object_id=RMF_TAG;
h->fileheader->size=18;
h->fileheader->object_version=0;
h->fileheader->file_version=0;
h->fileheader->num_headers=6;
h->prop->object_version=0;
h->streams[0]->object_version=0;
h->streams[1]->object_version=0;
h->cont->object_version=0;
h->data->object_version=0;
h->prop->object_id=PROP_TAG;
h->streams[0]->object_id=MDPR_TAG;
h->streams[1]->object_id=MDPR_TAG;
h->cont->object_id=CONT_TAG;
h->data->object_id=DATA_TAG;
h->prop->size=50;
h->data->size=18;
h->data->next_data_header=0;
h->cont->title=NULL;
h->cont->author=NULL;
h->cont->copyright=NULL;
h->cont->comment=NULL;
while (*data) {
if(sdp_filter(data,"m=audio",buf))
{
media=h->streams[0];
have_audio=1;
stream=0;
}
if(sdp_filter(data,"m=video",buf))
{
media=h->streams[1];
have_video=1;
stream=1;
}
/* cont stuff */
len=sdp_filter(data,"a=Title:buffer;",buf);
if (len) h->cont->title=b64_decode(buf);
len=sdp_filter(data,"a=Author:buffer;",buf);
if (len) h->cont->author=b64_decode(buf);
len=sdp_filter(data,"a=Copyright:buffer;",buf);
if (len) h->cont->copyright=b64_decode(buf);
len=sdp_filter(data,"a=Abstract:buffer;",buf);
if (len) h->cont->comment=b64_decode(buf);
/* prop stuff */
len=sdp_filter(data,"a=StreamCount:integer;",buf);
if (len) h->prop->num_streams=atoi(buf);
len=sdp_filter(data,"a=Flags:integer;",buf);
if (len) h->prop->flags=atoi(buf);
/* mdpr stuff */
if (media) {
len=sdp_filter(data,"a=control:streamid=",buf);
if (len) media->stream_number=atoi(buf);
len=sdp_filter(data,"a=MaxBitRate:integer;",buf);
if (len)
{
media->max_bit_rate=atoi(buf);
media->avg_bit_rate=media->max_bit_rate;
}
len=sdp_filter(data,"a=MaxPacketSize:integer;",buf);
if (len)
{
media->max_packet_size=atoi(buf);
media->avg_packet_size=media->max_packet_size;
}
len=sdp_filter(data,"a=StartTime:integer;",buf);
if (len) media->start_time=atoi(buf);
len=sdp_filter(data,"a=Preroll:integer;",buf);
if (len) media->preroll=atoi(buf);
len=sdp_filter(data,"a=length:npt=",buf);
if (len) media->duration=(uint32_t)(atof(buf)*1000);
len=sdp_filter(data,"a=StreamName:string;",buf);
if (len)
{
media->stream_name=strdup(buf);
media->stream_name_size=strlen(media->stream_name);
}
len=sdp_filter(data,"a=mimetype:string;",buf);
if (len)
{
media->mime_type=strdup(buf);
media->mime_type_size=strlen(media->mime_type);
}
len=sdp_filter(data,"a=OpaqueData:buffer;",buf);
if (len)
{
media->mlti_data=b64_decode(buf);
}
len=sdp_filter(data,"a=ASMRuleBook:string;",buf);
if (len)
{
int i=0;
char b[64];
#ifdef LOG
printf("calling asmrp_match with:\n%s\n%u\n", buf, bandwidth);
#endif
n=asmrp_match(buf, bandwidth, rulematches);
sr[stream]=rulematches[0];
for (i=0; i<n; i++) {
#ifdef LOG
printf("asmrp rule match: %u for stream %u\n", rulematches[i], stream);
#endif
sprintf(b,"stream=%u;rule=%u,", stream, rulematches[i]);
strcat(stream_rules, b);
}
}
}
data+=strchr(data,'\n')-data+1;
}
if (strlen(stream_rules)>0);
stream_rules[strlen(stream_rules)-1]=0; /* delete last , */
/* we have to reconstruct some data in prop */
h->prop->max_bit_rate=0;
h->prop->avg_bit_rate=0;
h->prop->max_packet_size=0;
h->prop->avg_packet_size=0;
h->prop->num_packets=0;
h->prop->duration=0;
h->prop->preroll=0;
h->prop->index_offset=0;
if(have_video)
{
h->prop->max_bit_rate=h->streams[1]->max_bit_rate;
h->prop->avg_bit_rate=h->streams[1]->avg_bit_rate;
h->prop->max_packet_size=h->streams[1]->max_packet_size;
h->prop->avg_packet_size=h->streams[1]->avg_packet_size;
h->prop->duration=h->streams[1]->duration;
/* h->prop->preroll=h->streams[1]->preroll; */
/* select a codec */
h->streams[1]->type_specific_len=select_mlti_data(
h->streams[1]->mlti_data, sr[1], buf);
h->streams[1]->type_specific_data=malloc(sizeof(char)*h->streams[1]->type_specific_len);
memcpy(h->streams[1]->type_specific_data, buf, h->streams[1]->type_specific_len);
} else
{
free(h->streams[1]);
h->streams[1]=NULL;
}
if(have_audio)
{
h->prop->max_bit_rate+=h->streams[0]->max_bit_rate;
h->prop->avg_bit_rate+=h->streams[0]->avg_bit_rate;
h->prop->max_packet_size=MAX(h->prop->max_packet_size,
h->streams[0]->max_packet_size);
if (have_video)
h->prop->avg_packet_size=(h->streams[1]->avg_packet_size
+h->streams[0]->avg_packet_size) / 2;
else
h->prop->avg_packet_size=h->streams[0]->avg_packet_size;
h->prop->duration=MAX(h->prop->duration,h->streams[0]->duration);
/* h->prop->preroll=MAX(h->streams[1]->preroll,h->streams[0]->preroll); */
/* select a codec */
h->streams[0]->type_specific_len=select_mlti_data(
h->streams[0]->mlti_data, sr[0], buf);
h->streams[0]->type_specific_data=malloc(sizeof(char)*h->streams[0]->type_specific_len);
memcpy(h->streams[0]->type_specific_data, buf, h->streams[0]->type_specific_len);
} else
{
free(h->streams[0]);
h->streams[0]=NULL;
}
/* fix sizes */
h->cont->title_len=0;
h->cont->author_len=0;
h->cont->copyright_len=0;
h->cont->comment_len=0;
if (h->cont->title) h->cont->title_len=strlen(h->cont->title);
if (h->cont->author) h->cont->author_len=strlen(h->cont->author);
if (h->cont->copyright) h->cont->copyright_len=strlen(h->cont->copyright);
if (h->cont->comment) h->cont->comment_len=strlen(h->cont->comment);
h->cont->size=18
+h->cont->title_len
+h->cont->author_len
+h->cont->copyright_len
+h->cont->comment_len;
if (have_audio)
h->streams[0]->size=12+7*4+6
+h->streams[0]->stream_name_size
+h->streams[0]->mime_type_size
+h->streams[0]->type_specific_len;
if (have_video)
h->streams[1]->size=12+7*4+6
+h->streams[1]->stream_name_size
+h->streams[1]->mime_type_size
+h->streams[1]->type_specific_len;
/* fix data offset */
h->prop->data_offset=RMFF_HEADER_SIZE
+h->cont->size
+h->prop->size;
if (have_video)
h->prop->data_offset+=h->streams[1]->size;
if (have_audio)
h->prop->data_offset+=h->streams[0]->size;
return h;
}
int real_get_rdt_chunk(rtsp_t *rtsp_session, char *buffer) {
int n=1;
uint8_t header[8];
rmff_pheader_t ph;
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)
{
printf("rdt chunk not recognized: got 0x%02x\n", header[0]);
return 0;
}
size=(header[1]<<12)+(header[2]<<8)+(header[3]);
flags1=header[4];
if ((flags1!=0x40)&&(flags1!=0x42))
{
#ifdef LOG
printf("got flags1: 0x%02x\n",flags1);
#endif
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;
#ifdef LOG
printf("ignoring bytes:\n");
hexdump(header, 8);
#endif
n=rtsp_read_data(rtsp_session, header+4, 4);
if (n<4) return 0;
flags1=header[4];
size-=9;
}
unknown1=(header[5]<<12)+(header[6]<<8)+(header[7]);
n=rtsp_read_data(rtsp_session, header, 6);
if (n<6) return 0;
ts=BE_32(header);
#ifdef LOG
printf("ts: %u size: %u, flags: 0x%02x, unknown values: %u 0x%02x 0x%02x\n",
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? */
rmff_dump_pheader(&ph, buffer);
size-=12;
n=rtsp_read_data(rtsp_session, buffer+12, size);
return n+12;
}
rmff_header_t *real_setup_and_get_header(rtsp_t *rtsp_session, uint32_t bandwidth) {
char *description=NULL;
char *session_id=NULL;
rmff_header_t *h;
char *challenge1;
char challenge2[64];
char checksum[34];
char subscribe[256];
char buf[256];
char *mrl=rtsp_get_mrl(rtsp_session);
unsigned int size;
/* get challenge */
challenge1=strdup(rtsp_search_answers(rtsp_session,"RealChallenge1"));
#ifdef LOG
printf("real: Challenge1: %s\n", challenge1);
#endif
/* 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, "Require: com.real.retain-entity-for-setup");
rtsp_request_describe(rtsp_session,NULL);
/* receive description */
size=atoi(rtsp_search_answers(rtsp_session,"Content-length"));
if (!rtsp_search_answers(rtsp_session,"ETag"))
printf("real: got no ETag!\n");
else
session_id=strdup(rtsp_search_answers(rtsp_session,"ETag"));
#ifdef LOG
printf("real: Stream description size: %i\n", size);
#endif
description=malloc(sizeof(char)*(size+1));
rtsp_read_data(rtsp_session, description, size);
description[size]=0;
/* parse sdp (sdpplin) and create a header and a subscribe string */
strcpy(subscribe, "Subscribe: ");
h=real_parse_sdp(description, subscribe+11, bandwidth);
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 2 streams */
real_calc_response_and_checksum (challenge2, checksum, challenge1);
sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum);
rtsp_schedule_field(rtsp_session, buf);
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");
sprintf(buf, "%s/streamid=0", mrl);
rtsp_request_setup(rtsp_session,buf);
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
sprintf(buf, "If-Match: %s", session_id);
rtsp_schedule_field(rtsp_session, buf);
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);
return h;
}
--- NEW FILE: real.h ---
/*
* Copyright (C) 2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: real.h,v 1.1 2002/12/12 22:14:55 holstsn Exp $
*
* special functions for real streams.
* adopted from joschkas real tools.
*
*/
#ifndef HAVE_REAL_H
#define HAVE_REAL_H
#include "rmff.h"
#include "../librtsp/rtsp.h"
#ifdef __CYGWIN__
#define uint32_t unsigned int
#define uint16_t unsigned short int
#define uint8_t unsigned char
#endif
/*
* calculates response and checksum of a given challenge
* (RealChallenge1 in rtsp). See implementation for details.
*/
void real_calc_response_and_checksum (char *response, char *chksum, char *challenge);
int real_get_rdt_chunk(rtsp_t *rtsp_session, char *buffer);
rmff_header_t *real_parse_sdp(const char *data, char *stream_rules, uint32_t bandwidth);
rmff_header_t *real_setup_and_get_header(rtsp_t *rtsp_session, uint32_t bandwidth);
#endif
--- NEW FILE: rmff.c ---
/*
* Copyright (C) 2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* $Id: rmff.c,v 1.1 2002/12/12 22:14:55 holstsn Exp $
*
* functions for real media file format
* adopted from joschkas real tools
*/
#include "rmff.h"
/*
#define LOG
*/
#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
(((uint8_t*)(x))[1] << 16) | \
(((uint8_t*)(x))[2] << 8) | \
((uint8_t*)(x))[3])
static void hexdump (const char *buf, int length) {
int i;
printf ("rmff: ascii>");
for (i = 0; i < length; i++) {
unsigned char c = buf[i];
if ((c >= 32) && (c <= 128))
printf ("%c", c);
else
printf (".");
}
printf ("\n");
printf ("rmff: hexdump> ");
for (i = 0; i < length; i++) {
unsigned char c = buf[i];
printf ("%02x", c);
if ((i % 16) == 15)
printf ("\nrmff: ");
if ((i % 2) == 1)
printf (" ");
}
printf ("\n");
}
/*
* writes header data to a buffer
*/
static void rmff_dump_fileheader(rmff_fileheader_t *fileheader, char *buffer) {
if (!fileheader) return;
fileheader->object_id=BE_32(&fileheader->object_id);
fileheader->size=BE_32(&fileheader->size);
fileheader->object_version=BE_16(&fileheader->object_version);
fileheader->file_version=BE_32(&fileheader->file_version);
fileheader->num_headers=BE_32(&fileheader->num_headers);
memcpy(buffer, fileheader, 8);
memcpy(&buffer[8], &fileheader->object_version, 2);
memcpy(&buffer[10], &fileheader->file_version, 8);
fileheader->size=BE_32(&fileheader->size);
fileheader->object_version=BE_16(&fileheader->object_version);
fileheader->file_version=BE_32(&fileheader->file_version);
fileheader->num_headers=BE_32(&fileheader->num_headers);
fileheader->object_id=BE_32(&fileheader->object_id);
}
static void rmff_dump_prop(rmff_prop_t *prop, char *buffer) {
if (!prop) return;
prop->object_id=BE_32(&prop->object_id);
prop->size=BE_32(&prop->size);
prop->object_version=BE_16(&prop->object_version);
prop->max_bit_rate=BE_32(&prop->max_bit_rate);
prop->avg_bit_rate=BE_32(&prop->avg_bit_rate);
prop->max_packet_size=BE_32(&prop->max_packet_size);
prop->avg_packet_size=BE_32(&prop->avg_packet_size);
prop->num_packets=BE_32(&prop->num_packets);
prop->duration=BE_32(&prop->duration);
prop->preroll=BE_32(&prop->preroll);
prop->index_offset=BE_32(&prop->index_offset);
prop->data_offset=BE_32(&prop->data_offset);
prop->num_streams=BE_16(&prop->num_streams);
prop->flags=BE_16(&prop->flags);
memcpy(buffer, prop, 8);
memcpy(&buffer[8], &prop->object_version, 2);
memcpy(&buffer[10], &prop->max_bit_rate, 36);
memcpy(&buffer[46], &prop->num_streams, 2);
memcpy(&buffer[48], &prop->flags, 2);
prop->size=BE_32(&prop->size);
prop->object_version=BE_16(&prop->object_version);
prop->max_bit_rate=BE_32(&prop->max_bit_rate);
prop->avg_bit_rate=BE_32(&prop->avg_bit_rate);
prop->max_packet_size=BE_32(&prop->max_packet_size);
prop->avg_packet_size=BE_32(&prop->avg_packet_size);
prop->num_packets=BE_32(&prop->num_packets);
prop->duration=BE_32(&prop->duration);
prop->preroll=BE_32(&prop->preroll);
prop->index_offset=BE_32(&prop->index_offset);
prop->data_offset=BE_32(&prop->data_offset);
prop->num_streams=BE_16(&prop->num_streams);
prop->flags=BE_16(&prop->flags);
prop->object_id=BE_32(&prop->object_id);
}
static void rmff_dump_mdpr(rmff_mdpr_t *mdpr, char *buffer) {
int s1, s2, s3;
if (!mdpr) return;
mdpr->object_id=BE_32(&mdpr->object_id);
mdpr->size=BE_32(&mdpr->size);
mdpr->object_version=BE_16(&mdpr->object_version);
mdpr->stream_number=BE_16(&mdpr->stream_number);
mdpr->max_bit_rate=BE_32(&mdpr->max_bit_rate);
mdpr->avg_bit_rate=BE_32(&mdpr->avg_bit_rate);
mdpr->max_packet_size=BE_32(&mdpr->max_packet_size);
mdpr->avg_packet_size=BE_32(&mdpr->avg_packet_size);
mdpr->start_time=BE_32(&mdpr->start_time);
mdpr->preroll=BE_32(&mdpr->preroll);
mdpr->duration=BE_32(&mdpr->duration);
memcpy(buffer, mdpr, 8);
memcpy(&buffer[8], &mdpr->object_version, 2);
memcpy(&buffer[10], &mdpr->stream_number, 2);
memcpy(&buffer[12], &mdpr->max_bit_rate, 28);
memcpy(&buffer[40], &mdpr->stream_name_size, 1);
s1=mdpr->stream_name_size;
memcpy(&buffer[41], mdpr->stream_name, s1);
memcpy(&buffer[41+s1], &mdpr->mime_type_size, 1);
s2=mdpr->mime_type_size;
memcpy(&buffer[42+s1], mdpr->mime_type, s2);
mdpr->type_specific_len=BE_32(&mdpr->type_specific_len);
memcpy(&buffer[42+s1+s2], &mdpr->type_specific_len, 4);
mdpr->type_specific_len=BE_32(&mdpr->type_specific_len);
s3=mdpr->type_specific_len;
memcpy(&buffer[46+s1+s2], mdpr->type_specific_data, s3);
mdpr->size=BE_32(&mdpr->size);
mdpr->stream_number=BE_16(&mdpr->stream_number);
mdpr->max_bit_rate=BE_32(&mdpr->max_bit_rate);
mdpr->avg_bit_rate=BE_32(&mdpr->avg_bit_rate);
mdpr->max_packet_size=BE_32(&mdpr->max_packet_size);
mdpr->avg_packet_size=BE_32(&mdpr->avg_packet_size);
mdpr->start_time=BE_32(&mdpr->start_time);
mdpr->preroll=BE_32(&mdpr->preroll);
mdpr->duration=BE_32(&mdpr->duration);
mdpr->object_id=BE_32(&mdpr->object_id);
}
static void rmff_dump_cont(rmff_cont_t *cont, char *buffer) {
int p;
if (!cont) return;
cont->object_id=BE_32(&cont->object_id);
cont->size=BE_32(&cont->size);
cont->object_version=BE_16(&cont->object_version);
memcpy(buffer, cont, 8);
memcpy(&buffer[8], &cont->object_version, 2);
cont->title_len=BE_16(&cont->title_len);
memcpy(&buffer[10], &cont->title_len, 2);
cont->title_len=BE_16(&cont->title_len);
memcpy(&buffer[12], cont->title, cont->title_len);
p=12+cont->title_len;
cont->author_len=BE_16(&cont->author_len);
memcpy(&buffer[p], &cont->author_len, 2);
cont->author_len=BE_16(&cont->author_len);
memcpy(&buffer[p+2], cont->author, cont->author_len);
p+=2+cont->author_len;
cont->copyright_len=BE_16(&cont->copyright_len);
memcpy(&buffer[p], &cont->copyright_len, 2);
cont->copyright_len=BE_16(&cont->copyright_len);
memcpy(&buffer[p+2], cont->copyright, cont->copyright_len);
p+=2+cont->copyright_len;
cont->comment_len=BE_16(&cont->comment_len);
memcpy(&buffer[p], &cont->comment_len, 2);
cont->comment_len=BE_16(&cont->comment_len);
memcpy(&buffer[p+2], cont->comment, cont->comment_len);
cont->size=BE_32(&cont->size);
cont->object_version=BE_16(&cont->object_version);
cont->object_id=BE_32(&cont->object_id);
}
static void rmff_dump_dataheader(rmff_data_t *data, char *buffer) {
if (!data) return;
data->object_id=BE_32(&data->object_id);
data->size=BE_32(&data->size);
data->object_version=BE_16(&data->object_version);
data->num_packets=BE_32(&data->num_packets);
data->next_data_header=BE_32(&data->next_data_header);
memcpy(buffer, data, 8);
memcpy(&buffer[8], &data->object_version, 2);
memcpy(&buffer[10], &data->num_packets, 8);
data->num_packets=BE_32(&data->num_packets);
data->next_data_header=BE_32(&data->next_data_header);
data->size=BE_32(&data->size);
data->object_version=BE_16(&data->object_version);
data->object_id=BE_32(&data->object_id);
}
int rmff_dump_header(rmff_header_t *h, char *buffer, int max) {
int written=0;
rmff_mdpr_t **stream=h->streams;
rmff_dump_fileheader(h->fileheader, &buffer[written]);
written+=h->fileheader->size;
rmff_dump_prop(h->prop, &buffer[written]);
written+=h->prop->size;
rmff_dump_cont(h->cont, &buffer[written]);
written+=h->cont->size;
if (stream)
{
while(*stream)
{
rmff_dump_mdpr(*stream, &buffer[written]);
written+=(*stream)->size;
stream++;
}
}
rmff_dump_dataheader(h->data, &buffer[written]);
written+=18;
return written;
}
void rmff_dump_pheader(rmff_pheader_t *h, char *data) {
data[0]=(h->object_version>>8) & 0xff;
data[1]=h->object_version & 0xff;
data[2]=(h->length>>8) & 0xff;
data[3]=h->length & 0xff;
data[4]=(h->stream_number>>8) & 0xff;
data[5]=h->stream_number & 0xff;
data[6]=(h->timestamp>>24) & 0xff;
data[7]=(h->timestamp>>16) & 0xff;
data[8]=(h->timestamp>>8) & 0xff;
data[9]=h->timestamp & 0xff;
data[10]=h->reserved;
data[11]=h->flags;
}
static rmff_fileheader_t *rmff_scan_fileheader(const char *data) {
rmff_fileheader_t *fileheader=malloc(sizeof(rmff_fileheader_t));
fileheader->object_id=BE_32(data);
fileheader->size=BE_32(&data[4]);
fileheader->object_version=BE_16(&data[8]);
if (fileheader->object_version != 0)
{
printf("warning: unknown object version in .RMF: 0x%04x\n",
fileheader->object_version);
}
fileheader->file_version=BE_32(&data[10]);
fileheader->num_headers=BE_32(&data[14]);
return fileheader;
}
static rmff_prop_t *rmff_scan_prop(const char *data) {
rmff_prop_t *prop=malloc(sizeof(rmff_prop_t));
prop->object_id=BE_32(data);
prop->size=BE_32(&data[4]);
prop->object_version=BE_16(&data[8]);
if (prop->object_version != 0)
{
printf("warning: unknown object version in PROP: 0x%04x\n",
prop->object_version);
}
prop->max_bit_rate=BE_32(&data[10]);
prop->avg_bit_rate=BE_32(&data[14]);
prop->max_packet_size=BE_32(&data[18]);
prop->avg_packet_size=BE_32(&data[22]);
prop->num_packets=BE_32(&data[26]);
prop->duration=BE_32(&data[30]);
prop->preroll=BE_32(&data[34]);
prop->index_offset=BE_32(&data[38]);
prop->data_offset=BE_32(&data[42]);
prop->num_streams=BE_16(&data[46]);
prop->flags=BE_16(&data[48]);
return prop;
}
static rmff_mdpr_t *rmff_scan_mdpr(const char *data) {
rmff_mdpr_t *mdpr=malloc(sizeof(rmff_mdpr_t));
mdpr->object_id=BE_32(data);
mdpr->size=BE_32(&data[4]);
mdpr->object_version=BE_16(&data[8]);
if (mdpr->object_version != 0)
{
printf("warning: unknown object version in MDPR: 0x%04x\n",
mdpr->object_version);
}
mdpr->stream_number=BE_16(&data[10]);
mdpr->max_bit_rate=BE_32(&data[12]);
mdpr->avg_bit_rate=BE_32(&data[16]);
mdpr->max_packet_size=BE_32(&data[20]);
mdpr->avg_packet_size=BE_32(&data[24]);
mdpr->start_time=BE_32(&data[28]);
mdpr->preroll=BE_32(&data[32]);
mdpr->duration=BE_32(&data[36]);
mdpr->stream_name_size=data[40];
mdpr->stream_name=malloc(sizeof(char)*(mdpr->stream_name_size+1));
memcpy(mdpr->stream_name, &data[41], mdpr->stream_name_size);
mdpr->stream_name[mdpr->stream_name_size]=0;
mdpr->mime_type_size=data[41+mdpr->stream_name_size];
mdpr->mime_type=malloc(sizeof(char)*(mdpr->mime_type_size+1));
memcpy(mdpr->mime_type, &data[42+mdpr->stream_name_size], mdpr->mime_type_size);
mdpr->mime_type[mdpr->mime_type_size]=0;
mdpr->type_specific_len=BE_32(&data[42+mdpr->stream_name_size+mdpr->mime_type_size]);
mdpr->type_specific_data=malloc(sizeof(char)*(mdpr->type_specific_len));
memcpy(mdpr->type_specific_data,
&data[46+mdpr->stream_name_size+mdpr->mime_type_size], mdpr->type_specific_len);
return mdpr;
}
static rmff_cont_t *rmff_scan_cont(const char *data) {
rmff_cont_t *cont=malloc(sizeof(rmff_cont_t));
int pos;
cont->object_id=BE_32(data);
cont->size=BE_32(&data[4]);
cont->object_version=BE_16(&data[8]);
if (cont->object_version != 0)
{
printf("warning: unknown object version in CONT: 0x%04x\n",
cont->object_version);
}
cont->title_len=BE_16(&data[10]);
cont->title=malloc(sizeof(char)*(cont->title_len+1));
memcpy(cont->title, &data[12], cont->title_len);
cont->title[cont->title_len]=0;
pos=cont->title_len+12;
cont->author_len=BE_16(&data[pos]);
cont->author=malloc(sizeof(char)*(cont->author_len+1));
memcpy(cont->author, &data[pos+2], cont->author_len);
cont->author[cont->author_len]=0;
pos=pos+2+cont->author_len;
cont->copyright_len=BE_16(&data[pos]);
cont->copyright=malloc(sizeof(char)*(cont->copyright_len+1));
memcpy(cont->copyright, &data[pos+2], cont->copyright_len);
cont->copyright[cont->copyright_len]=0;
pos=pos+2+cont->copyright_len;
cont->comment_len=BE_16(&data[pos]);
cont->comment=malloc(sizeof(char)*(cont->comment_len+1));
memcpy(cont->comment, &data[pos+2], cont->comment_len);
cont->comment[cont->comment_len]=0;
return cont;
}
static rmff_data_t *rmff_scan_dataheader(const char *data) {
rmff_data_t *dh=malloc(sizeof(rmff_data_t));
dh->object_id=BE_32(data);
dh->size=BE_32(&data[4]);
dh->object_version=BE_16(&data[8]);
if (dh->object_version != 0)
{
printf("warning: unknown object version in DATA: 0x%04x\n",
dh->object_version);
}
dh->num_packets=BE_32(&data[10]);
dh->next_data_header=BE_32(&data[14]);
return dh;
}
rmff_header_t *rmff_scan_header(const char *data) {
rmff_header_t *header=malloc(sizeof(rmff_header_t));
rmff_mdpr_t *mdpr=NULL;
int chunk_size;
uint32_t chunk_type;
const char *ptr=data;
int i;
header->fileheader=NULL;
header->prop=NULL;
header->cont=NULL;
header->data=NULL;
chunk_type = BE_32(ptr);
if (chunk_type != RMF_TAG)
{
printf("rmff: not an real media file header (.RMF tag not found).\n");
free(header);
return NULL;
}
header->fileheader=rmff_scan_fileheader(ptr);
ptr += header->fileheader->size;
header->streams=malloc(sizeof(rmff_mdpr_t*)*(header->fileheader->num_headers));
for (i=0; i<header->fileheader->num_headers; i++) {
header->streams[i]=NULL;
}
for (i=1; i<header->fileheader->num_headers; i++) {
chunk_type = BE_32(ptr);
if (ptr[0] == 0)
{
printf("rmff: warning: only %d of %d header found.\n", i, header->fileheader->num_headers);
break;
}
chunk_size=1;
switch (chunk_type) {
case PROP_TAG:
header->prop=rmff_scan_prop(ptr);
chunk_size=header->prop->size;
break;
case MDPR_TAG:
mdpr=rmff_scan_mdpr(ptr);
chunk_size=mdpr->size;
header->streams[mdpr->stream_number]=mdpr;
break;
case CONT_TAG:
header->cont=rmff_scan_cont(ptr);
chunk_size=header->cont->size;
break;
case DATA_TAG:
header->data=rmff_scan_dataheader(ptr);
chunk_size=34; /* hard coded header size */
break;
default:
printf("unknown chunk\n");
hexdump(ptr,10);
chunk_size=1;
break;
}
ptr+=chunk_size;
}
return header;
}
rmff_header_t *rmff_scan_header_stream(int fd) {
rmff_header_t *header;
char *buf=malloc(sizeof(char)*1024);
int fill=0;
int size=1024;
uint32_t chunk_type;
uint32_t chunk_size;
char *ptr=buf;
do {
if (size-fill < 8) {
size+=1024;
buf=realloc(buf, sizeof(char)*size);
ptr=buf+fill;
}
read(fd, ptr, 8);
chunk_type=BE_32(ptr);
ptr+=4;
fill+=4;
chunk_size=BE_32(ptr);
ptr+=4;
fill+=4;
switch (chunk_type) {
case DATA_TAG:
chunk_size=18;
case MDPR_TAG:
case CONT_TAG:
case RMF_TAG:
case PROP_TAG:
if (size-fill < (chunk_size-8)) {
size+=1024;
buf=realloc(buf, sizeof(char)*size);
ptr=buf+fill;
}
read(fd, ptr, (chunk_size-8));
ptr+=(chunk_size-8);
fill+=(chunk_size-8);
break;
default:
printf("rmff_scan_header_stream: unknown chunk");
hexdump(ptr-8, 8);
chunk_type=DATA_TAG;
}
} while (chunk_type != DATA_TAG);
header = rmff_scan_header(buf);
free(buf);
return header;
}
void rmff_scan_pheader(rmff_pheader_t *h, char *data) {
h->object_version=BE_16(data);
h->length=BE_16(data+2);
h->stream_number=BE_16(data+4);
h->timestamp=BE_32(data+6);
h->reserved=(uint8_t)data[10];
h->flags=(uint8_t)data[11];
}
rmff_fileheader_t *rmff_new_fileheader(uint32_t num_headers) {
rmff_fileheader_t *fileheader=malloc(sizeof(rmff_fileheader_t));
fileheader->object_id=RMF_TAG;
fileheader->size=18;
fileheader->object_version=0;
fileheader->file_version=0;
fileheader->num_headers=num_headers;
return fileheader;
}
rmff_prop_t *rmff_new_prop (
uint32_t max_bit_rate,
uint32_t avg_bit_rate,
uint32_t max_packet_size,
uint32_t avg_packet_size,
uint32_t num_packets,
uint32_t duration,
uint32_t preroll,
uint32_t index_offset,
uint32_t data_offset,
uint16_t num_streams,
uint16_t flags ) {
rmff_prop_t *prop=malloc(sizeof(rmff_prop_t));
prop->object_id=PROP_TAG;
prop->size=50;
prop->object_version=0;
prop->max_bit_rate=max_bit_rate;
prop->avg_bit_rate=avg_bit_rate;
prop->max_packet_size=max_packet_size;
prop->avg_packet_size=avg_packet_size;
prop->num_packets=num_packets;
prop->duration=duration;
prop->preroll=preroll;
prop->index_offset=index_offset;
prop->data_offset=data_offset;
prop->num_streams=num_streams;
prop->flags=flags;
return prop;
}
rmff_mdpr_t *rmff_new_mdpr(
uint16_t stream_number,
uint32_t max_bit_rate,
uint32_t avg_bit_rate,
uint32_t max_packet_size,
uint32_t avg_packet_size,
uint32_t start_time,
uint32_t preroll,
uint32_t duration,
const char *stream_name,
const char *mime_type,
uint32_t type_specific_len,
const char *type_specific_data ) {
rmff_mdpr_t *mdpr=malloc(sizeof(rmff_mdpr_t));
mdpr->object_id=MDPR_TAG;
mdpr->object_version=0;
mdpr->stream_number=stream_number;
mdpr->max_bit_rate=max_bit_rate;
mdpr->avg_bit_rate=avg_bit_rate;
mdpr->max_packet_size=max_packet_size;
mdpr->avg_packet_size=avg_packet_size;
mdpr->start_time=start_time;
mdpr->preroll=preroll;
mdpr->duration=duration;
mdpr->stream_name_size=0;
if (stream_name)...
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