mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 01:22:30 +00:00
49867bd432
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19277 b3059339-0415-0410-9bf9-f77b7e298cf2
367 lines
8.8 KiB
C
367 lines
8.8 KiB
C
/*
|
|
* This file was ported to MPlayer from xine CVS sdpplin.c,v 1.1 2002/12/24 01:30:22
|
|
*/
|
|
|
|
/*
|
|
* 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
|
|
*
|
|
*
|
|
* sdp/sdpplin parser.
|
|
*
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "../librtsp/rtsp.h"
|
|
#include "sdpplin.h"
|
|
#include "xbuffer.h"
|
|
#include "mp_msg.h"
|
|
|
|
/*
|
|
#define LOG
|
|
*/
|
|
|
|
/*
|
|
* Decodes base64 strings (based upon b64 package)
|
|
*/
|
|
|
|
static char *b64_decode(const char *in, char *out, int *size)
|
|
{
|
|
char dtable[256]; /* Encode / decode table */
|
|
int i,j,k;
|
|
|
|
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);
|
|
return NULL;
|
|
}
|
|
a[i] = (char) c;
|
|
b[i] = (char) dtable[c];
|
|
}
|
|
out = xbuffer_ensure_size(out, k+4);
|
|
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;
|
|
*size=k;
|
|
return out;
|
|
}
|
|
}
|
|
out[k]=0;
|
|
*size=k;
|
|
return out;
|
|
}
|
|
|
|
static char *nl(char *data) {
|
|
|
|
char *nlptr = (data) ? strchr(data,'\n') : NULL;
|
|
return (nlptr) ? nlptr + 1 : NULL;
|
|
}
|
|
|
|
static int filter(const char *in, const char *filter, char **out) {
|
|
|
|
int flen=strlen(filter);
|
|
int len;
|
|
|
|
if (!in)
|
|
return 0;
|
|
|
|
len = (strchr(in,'\n')) ? strchr(in,'\n')-in : strlen(in);
|
|
|
|
if (!strncmp(in,filter,flen))
|
|
{
|
|
if(in[flen]=='"') flen++;
|
|
if(in[len-1]==13) len--;
|
|
if(in[len-1]=='"') len--;
|
|
*out = xbuffer_copyin(*out, 0, in+flen, len-flen+1);
|
|
(*out)[len-flen]=0;
|
|
|
|
return len-flen;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
static sdpplin_stream_t *sdpplin_parse_stream(char **data) {
|
|
|
|
sdpplin_stream_t *desc=calloc(1,sizeof(sdpplin_stream_t));
|
|
char *buf=xbuffer_init(32);
|
|
char *decoded=xbuffer_init(32);
|
|
int handled;
|
|
int got_mimetype;
|
|
|
|
if (filter(*data, "m=", &buf)) {
|
|
desc->id = strdup(buf);
|
|
} else
|
|
{
|
|
printf("sdpplin: no m= found.\n");
|
|
free(desc);
|
|
xbuffer_free(buf);
|
|
return NULL;
|
|
}
|
|
*data=nl(*data);
|
|
|
|
got_mimetype = 0;
|
|
|
|
while (*data && **data && *data[0]!='m') {
|
|
#ifdef LOG
|
|
{
|
|
int len=strchr(*data,'\n')-(*data);
|
|
buf = xbuffer_copyin(buf, 0, *data, len+1);
|
|
buf[len]=0;
|
|
printf("libreal: sdpplin_stream: '%s'\n", buf);
|
|
}
|
|
#endif
|
|
|
|
handled=0;
|
|
|
|
if(filter(*data,"a=control:streamid=",&buf)) {
|
|
desc->stream_id=atoi(buf);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=MaxBitRate:integer;",&buf)) {
|
|
desc->max_bit_rate=atoi(buf);
|
|
if (!desc->avg_bit_rate)
|
|
desc->avg_bit_rate=desc->max_bit_rate;
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=MaxPacketSize:integer;",&buf)) {
|
|
desc->max_packet_size=atoi(buf);
|
|
if (!desc->avg_packet_size)
|
|
desc->avg_packet_size=desc->max_packet_size;
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=StartTime:integer;",&buf)) {
|
|
desc->start_time=atoi(buf);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=Preroll:integer;",&buf)) {
|
|
desc->preroll=atoi(buf);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=length:npt=",&buf)) {
|
|
desc->duration=(uint32_t)(atof(buf)*1000);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=StreamName:string;",&buf)) {
|
|
desc->stream_name=strdup(buf);
|
|
desc->stream_name_size=strlen(desc->stream_name);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=mimetype:string;",&buf)) {
|
|
desc->mime_type=strdup(buf);
|
|
desc->mime_type_size=strlen(desc->mime_type);
|
|
handled=1;
|
|
got_mimetype = 1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(filter(*data,"a=OpaqueData:buffer;",&buf)) {
|
|
decoded = b64_decode(buf, decoded, &(desc->mlti_data_size));
|
|
desc->mlti_data=malloc(desc->mlti_data_size);
|
|
memcpy(desc->mlti_data, decoded, desc->mlti_data_size);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
#ifdef LOG
|
|
printf("mlti_data_size: %i\n", desc->mlti_data_size);
|
|
#endif
|
|
}
|
|
|
|
if(filter(*data,"a=ASMRuleBook:string;",&buf)) {
|
|
desc->asm_rule_book=strdup(buf);
|
|
handled=1;
|
|
*data=nl(*data);
|
|
}
|
|
|
|
if(!handled) {
|
|
#ifdef LOG
|
|
int len=strchr(*data,'\n')-(*data);
|
|
buf = xbuffer_copyin(buf, 0, *data, len+1);
|
|
buf[len]=0;
|
|
printf("libreal: sdpplin_stream: not handled: '%s'\n", buf);
|
|
#endif
|
|
*data=nl(*data);
|
|
}
|
|
}
|
|
|
|
if (!got_mimetype) {
|
|
mp_msg(MSGT_OPEN, MSGL_V, "libreal: sdpplin_stream: no mimetype\n");
|
|
desc->mime_type = strdup("audio/x-pn-realaudio");
|
|
desc->mime_type_size = strlen(desc->mime_type);
|
|
if (desc->stream_id)
|
|
mp_msg(MSGT_OPEN, MSGL_WARN, "libreal: sdpplin_stream: implicit mimetype for stream_id != 0, weird.\n");
|
|
}
|
|
|
|
xbuffer_free(buf);
|
|
xbuffer_free(decoded);
|
|
|
|
return desc;
|
|
}
|
|
|
|
sdpplin_t *sdpplin_parse(char *data) {
|
|
|
|
sdpplin_t *desc=calloc(1,sizeof(sdpplin_t));
|
|
char *buf=xbuffer_init(32);
|
|
char *decoded=xbuffer_init(32);
|
|
int handled;
|
|
int len;
|
|
|
|
while (data && *data) {
|
|
#ifdef LOG
|
|
{
|
|
int len=strchr(data,'\n')-(data);
|
|
buf = xbuffer_copyin(buf, 0, data, len+1);
|
|
buf[len]=0;
|
|
printf("libreal: sdpplin: '%s'\n", buf);
|
|
}
|
|
#endif
|
|
|
|
handled=0;
|
|
|
|
if (filter(data, "m=", &buf)) {
|
|
sdpplin_stream_t *stream=sdpplin_parse_stream(&data);
|
|
#ifdef LOG
|
|
printf("got data for stream id %u\n", stream->stream_id);
|
|
#endif
|
|
if (desc->stream && (stream->stream_id >= 0) && (stream->stream_id < desc->stream_count))
|
|
desc->stream[stream->stream_id]=stream;
|
|
else if (desc->stream)
|
|
{
|
|
mp_msg(MSGT_OPEN, MSGL_ERR, "sdpplin: bad stream_id %d (must be >= 0, < %d). Broken sdp?\n",
|
|
stream->stream_id, desc->stream_count);
|
|
free(stream);
|
|
} else {
|
|
mp_msg(MSGT_OPEN, MSGL_V, "sdpplin: got 'm=', but 'a=StreamCount' is still unknown.\n");
|
|
if (stream->stream_id == 0) {
|
|
desc->stream_count=1;
|
|
desc->stream=malloc(sizeof(sdpplin_stream_t*));
|
|
desc->stream[0]=stream;
|
|
} else {
|
|
mp_msg(MSGT_OPEN, MSGL_ERR, "sdpplin: got 'm=', but 'a=StreamCount' is still unknown and stream_id != 0. Broken sdp?\n");
|
|
free(stream);
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if(filter(data,"a=Title:buffer;",&buf)) {
|
|
decoded=b64_decode(buf, decoded, &len);
|
|
desc->title=strdup(decoded);
|
|
handled=1;
|
|
data=nl(data);
|
|
}
|
|
|
|
if(filter(data,"a=Author:buffer;",&buf)) {
|
|
decoded=b64_decode(buf, decoded, &len);
|
|
desc->author=strdup(decoded);
|
|
handled=1;
|
|
data=nl(data);
|
|
}
|
|
|
|
if(filter(data,"a=Copyright:buffer;",&buf)) {
|
|
decoded=b64_decode(buf, decoded, &len);
|
|
desc->copyright=strdup(decoded);
|
|
handled=1;
|
|
data=nl(data);
|
|
}
|
|
|
|
if(filter(data,"a=Abstract:buffer;",&buf)) {
|
|
decoded=b64_decode(buf, decoded, &len);
|
|
desc->abstract=strdup(decoded);
|
|
handled=1;
|
|
data=nl(data);
|
|
}
|
|
|
|
if(filter(data,"a=StreamCount:integer;",&buf)) {
|
|
desc->stream_count=(unsigned int)atoi(buf);
|
|
desc->stream=malloc(sizeof(sdpplin_stream_t*)*desc->stream_count);
|
|
handled=1;
|
|
data=nl(data);
|
|
}
|
|
|
|
if(filter(data,"a=Flags:integer;",&buf)) {
|
|
desc->flags=atoi(buf);
|
|
handled=1;
|
|
data=nl(data);
|
|
}
|
|
|
|
if(!handled) {
|
|
#ifdef LOG
|
|
int len=strchr(data,'\n')-data;
|
|
buf = xbuffer_copyin(buf, 0, data, len+1);
|
|
buf[len]=0;
|
|
printf("libreal: sdpplin: not handled: '%s'\n", buf);
|
|
#endif
|
|
data=nl(data);
|
|
}
|
|
}
|
|
|
|
xbuffer_free(buf);
|
|
xbuffer_free(decoded);
|
|
|
|
return desc;
|
|
}
|
|
|
|
void sdpplin_free(sdpplin_t *description) {
|
|
|
|
/* TODO: free strings */
|
|
free(description);
|
|
}
|
|
|