frodovdr
/
vdr-plugin-streamdev
mirror of https://projects.vdr-developer.org/git/vdr-plugin-streamdev.git
1
0
Fork 0
Code Issues Releases Wiki Activity
vdr-plugin-streamdev/libdvbmpeg/ctools.c

2404 lines
48 KiB
C
Raw Blame History

/*
* dvb-mpegtools for the Siemens Fujitsu DVB PCI card
*
* Copyright (C) 2000, 2001 Marcus Metzler
* for convergence integrated media GmbH
* Copyright (C) 2002 Marcus Metzler
*
* 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
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*
* The author can be reached at mocm@metzlerbros.de,
*/
#include "ctools.h"
#define MAX_SEARCH 1024 * 1024
/*
PES
*/
ssize_t save_read(int fd, void *buf, size_t count)
{
ssize_t neof = 1;
size_t re = 0;
while(neof >= 0 && re < count){
neof = read(fd, buf+re, count - re);
if (neof > 0) re += neof;
else break;
}
if (neof < 0 && re == 0) return neof;
else return re;
}
void init_pes(pes_packet *p){
p->stream_id = 0;
p->llength[0] = 0;
p->llength[1] = 0;
p->length = 0;
p->flags1 = 0x80;
p->flags2 = 0;
p->pes_hlength = 0;
p->trick = 0;
p->add_cpy = 0;
p->priv_flags = 0;
p->pack_field_length = 0;
p->pack_header = (uint8_t *) NULL;
p->pck_sqnc_cntr = 0;
p->org_stuff_length = 0;
p->pes_ext_lngth = 0;
p->pes_ext = (uint8_t *) NULL;
p->pes_pckt_data = (uint8_t *) NULL;
p->padding = 0;
p->mpeg = 2; // DEFAULT MPEG2
p->mpeg1_pad = 0;
p->mpeg1_headr = NULL;
p->stuffing = 0;
}
void kill_pes(pes_packet *p){
if (p->pack_header)
free(p->pack_header);
if (p->pes_ext)
free(p->pes_ext);
if (p->pes_pckt_data)
free(p->pes_pckt_data);
if (p->mpeg1_headr)
free(p->mpeg1_headr);
init_pes(p);
}
void setlength_pes(pes_packet *p){
short *ll;
ll = (short *) p->llength;
p->length = ntohs(*ll);
}
static void setl_pes(pes_packet *p){
setlength_pes(p);
if (p->length)
p->pes_pckt_data = (uint8_t *)malloc(p->length);
}
void nlength_pes(pes_packet *p){
if (p->length <= 0xFFFF){
short *ll = (short *) p->llength;
short l = p->length;
*ll = htons(l);
} else {
p->llength[0] =0x00;
p->llength[1] =0x00;
}
}
static void nl_pes(pes_packet *p)
{
nlength_pes(p);
p->pes_pckt_data = (uint8_t *) malloc(p->length);
}
void pts2pts(uint8_t *av_pts, uint8_t *pts)
{
av_pts[0] = ((pts[0] & 0x06) << 5) |
((pts[1] & 0xFC) >> 2);
av_pts[1] = ((pts[1] & 0x03) << 6) |
((pts[2] & 0xFC) >> 2);
av_pts[2] = ((pts[2] & 0x02) << 6) |
((pts[3] & 0xFE) >> 1);
av_pts[3] = ((pts[3] & 0x01) << 7) |
((pts[4] & 0xFE) >> 1);
}
int cwrite_pes(uint8_t *buf, pes_packet *p, long length){
int count,i;
uint8_t dummy;
int more = 0;
uint8_t headr[3] = { 0x00, 0x00 , 0x01};
if (length < p->length+p->pes_hlength){
fprintf(stderr,"Wrong buffer size in cwrite_pes\n");
exit(1);
}
memcpy(buf,headr,3);
count = 3;
buf[count] = p->stream_id;
count++;
switch ( p->stream_id ) {
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
case PADDING_STREAM :
buf[count] = p->llength[0];
count++;
buf[count] = p->llength[1];
count++;
memcpy(buf+count,p->pes_pckt_data,p->length);
count += p->length;
break;
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
buf[count] = p->llength[0];
count++;
buf[count] = p->llength[1];
count++;
more = 1;
break;
}
if ( more ) {
if ( p->mpeg == 2 ){
memcpy(buf+count,&p->flags1,1);
count++;
memcpy(buf+count,&p->flags2,1);
count++;
memcpy(buf+count,&p->pes_hlength,1);
count++;
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
memcpy(buf+count,p->pts,5);
count += 5;
} else
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_DTS){
memcpy(buf+count,p->pts,5);
count += 5;
memcpy(buf+count,p->dts,5);
count += 5;
}
if (p->flags2 & ESCR_FLAG){
memcpy(buf+count,p->escr,6);
count += 6;
}
if (p->flags2 & ES_RATE_FLAG){
memcpy(buf+count,p->es_rate,3);
count += 3;
}
if (p->flags2 & DSM_TRICK_FLAG){
memcpy(buf+count,&p->trick,1);
count++;
}
if (p->flags2 & ADD_CPY_FLAG){
memcpy(buf+count,&p->add_cpy,1);
count++;
}
if (p->flags2 & PES_CRC_FLAG){
memcpy(buf+count,p->prev_pes_crc,2);
count += 2;
}
if (p->flags2 & PES_EXT_FLAG){
memcpy(buf+count,&p->priv_flags,1);
count++;
if (p->priv_flags & PRIVATE_DATA){
memcpy(buf+count,p->pes_priv_data,16);
count += 16;
}
if (p->priv_flags & HEADER_FIELD){
memcpy(buf+count,&p->pack_field_length,
1);
count++;
memcpy(buf+count,p->pack_header,
p->pack_field_length);
count += p->pack_field_length;
}
if ( p->priv_flags & PACK_SEQ_CTR){
memcpy(buf+count,&p->pck_sqnc_cntr,1);
count++;
memcpy(buf+count,&p->org_stuff_length,
1);
count++;
}
if ( p->priv_flags & P_STD_BUFFER){
memcpy(buf+count,p->p_std,2);
count += 2;
}
if ( p->priv_flags & PES_EXT_FLAG2){
memcpy(buf+count,&p->pes_ext_lngth,1);
count++;
memcpy(buf+count,p->pes_ext,
p->pes_ext_lngth);
count += p->pes_ext_lngth;
}
}
dummy = 0xFF;
for (i=0;i<p->stuffing;i++) {
memcpy(buf+count,&dummy,1);
count++;
}
} else {
if (p->mpeg1_pad){
memcpy(buf+count,p->mpeg1_headr,p->mpeg1_pad);
count += p->mpeg1_pad;
}
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
memcpy(buf+count,p->pts,5);
count += 5;
}
else if ((p->flags2 & PTS_DTS_FLAGS) ==
PTS_DTS){
memcpy(buf+count,p->pts,5);
count += 5;
memcpy(buf+count,p->dts,5);
count += 5;
}
}
memcpy(buf+count,p->pes_pckt_data,p->length);
count += p->length;
}
return count;
}
void write_pes(int fd, pes_packet *p){
long length;
uint8_t *buf;
int l = p->length+p->pes_hlength;
buf = (uint8_t *) malloc(l);
length = cwrite_pes(buf,p,l);
write(fd,buf,length);
free(buf);
}
static unsigned int find_length(int f){
uint64_t p = 0;
uint64_t start = 0;
uint64_t q = 0;
int found = 0;
uint8_t sync4[4];
int neof = 1;
start = lseek(f,0,SEEK_CUR);
start -=2;
lseek(f,start,SEEK_SET);
while ( neof > 0 && !found ){
p = lseek(f,0,SEEK_CUR);
neof = save_read(f,&sync4,4);
if (sync4[0] == 0x00 && sync4[1] == 0x00 && sync4[2] == 0x01) {
switch ( sync4[3] ) {
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
case PADDING_STREAM :
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
found = 1;
break;
default:
q = lseek(f,0,SEEK_CUR);
break;
}
}
}
q = lseek(f,0,SEEK_CUR);
lseek(f,start+2,SEEK_SET);
if (found) return (unsigned int)(q-start)-4-2;
else return (unsigned int)(q-start-2);
}
void cread_pes(char *buf, pes_packet *p){
uint8_t count, dummy, check;
int i;
uint64_t po = 0;
int c=0;
switch ( p->stream_id ) {
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
memcpy(p->pes_pckt_data,buf+c,p->length);
return;
break;
case PADDING_STREAM :
p->padding = p->length;
memcpy(p->pes_pckt_data,buf+c,p->length);
return;
break;
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
break;
default:
return;
break;
}
po = c;
memcpy(&p->flags1,buf+c,1);
c++;
if ( (p->flags1 & 0xC0) == 0x80 ) p->mpeg = 2;
else p->mpeg = 1;
if ( p->mpeg == 2 ){
memcpy(&p->flags2,buf+c,1);
c++;
memcpy(&p->pes_hlength,buf+c,1);
c++;
p->length -=p->pes_hlength+3;
count = p->pes_hlength;
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
memcpy(p->pts,buf+c,5);
c += 5;
count -=5;
} else
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_DTS){
memcpy(p->pts,buf+c,5);
c += 5;
memcpy(p->dts,buf+c,5);
c += 5;
count -= 10;
}
if (p->flags2 & ESCR_FLAG){
memcpy(p->escr,buf+c,6);
c += 6;
count -= 6;
}
if (p->flags2 & ES_RATE_FLAG){
memcpy(p->es_rate,buf+c,3);
c += 3;
count -= 3;
}
if (p->flags2 & DSM_TRICK_FLAG){
memcpy(&p->trick,buf+c,1);
c += 1;
count -= 1;
}
if (p->flags2 & ADD_CPY_FLAG){
memcpy(&p->add_cpy,buf+c,1);
c++;
count -= 1;
}
if (p->flags2 & PES_CRC_FLAG){
memcpy(p->prev_pes_crc,buf+c,2);
c += 2;
count -= 2;
}
if (p->flags2 & PES_EXT_FLAG){
memcpy(&p->priv_flags,buf+c,1);
c++;
count -= 1;
if (p->priv_flags & PRIVATE_DATA){
memcpy(p->pes_priv_data,buf+c,16);
c += 16;
count -= 16;
}
if (p->priv_flags & HEADER_FIELD){
memcpy(&p->pack_field_length,buf+c,1);
c++;
p->pack_header = (uint8_t *)
malloc(p->pack_field_length);
memcpy(p->pack_header,buf+c,
p->pack_field_length);
c += p->pack_field_length;
count -= 1+p->pack_field_length;
}
if ( p->priv_flags & PACK_SEQ_CTR){
memcpy(&p->pck_sqnc_cntr,buf+c,1);
c++;
memcpy(&p->org_stuff_length,buf+c,1);
c++;
count -= 2;
}
if ( p->priv_flags & P_STD_BUFFER){
memcpy(p->p_std,buf+c,2);
c += 2;
count -= 2;
}
if ( p->priv_flags & PES_EXT_FLAG2){
memcpy(&p->pes_ext_lngth,buf+c,1);
c++;
p->pes_ext = (uint8_t *)
malloc(p->pes_ext_lngth);
memcpy(p->pes_ext,buf+c,
p->pes_ext_lngth);
c += p->pes_ext_lngth;
count -= 1+p->pes_ext_lngth;
}
}
p->stuffing = count;
for(i = 0; i< count ;i++){
memcpy(&dummy,buf+c,1);
c++;
}
} else {
p->mpeg1_pad = 1;
check = p->flags1;
while (check == 0xFF){
memcpy(&check,buf+c,1);
c++;
p->mpeg1_pad++;
}
if ( (check & 0xC0) == 0x40){
memcpy(&check,buf+c,1);
c++;
p->mpeg1_pad++;
memcpy(&check,buf+c,1);
c++;
p->mpeg1_pad++;
}
p->flags2 = 0;
p->length -= p->mpeg1_pad;
c = po;
if ( (check & 0x30)){
p->length ++;
p->mpeg1_pad --;
if (check == p->flags1){
p->pes_hlength = 0;
} else {
p->mpeg1_headr = (uint8_t *)
malloc(p->mpeg1_pad);
p->pes_hlength = p->mpeg1_pad;
memcpy(p->mpeg1_headr,buf+c,
p->mpeg1_pad);
c += p->mpeg1_pad;
}
p->flags2 = (check & 0xF0) << 2;
if ((p->flags2 & PTS_DTS_FLAGS) == PTS_ONLY){
memcpy(p->pts,buf+c,5);
c += 5;
p->length -= 5;
p->pes_hlength += 5;
}
else if ((p->flags2 & PTS_DTS_FLAGS) ==
PTS_DTS){
memcpy(p->pts,buf+c,5);
c += 5;
memcpy(p->dts,buf+c,5);
c += 5;
p->length -= 10;
p->pes_hlength += 10;
}
} else {
p->mpeg1_headr = (uint8_t *) malloc(p->mpeg1_pad);
p->pes_hlength = p->mpeg1_pad;
memcpy(p->mpeg1_headr,buf+c,
p->mpeg1_pad);
c += p->mpeg1_pad;
}
}
memcpy(p->pes_pckt_data,buf+c,p->length);
}
int read_pes(int f, pes_packet *p){
uint8_t sync4[4];
int found=0;
uint64_t po = 0;
int neof = 1;
uint8_t *buf;
while (neof > 0 && !found) {
po = lseek(f,0,SEEK_CUR);
if (po < 0) return -1;
if ((neof = save_read(f,&sync4,4)) < 4) return -1;
if (sync4[0] == 0x00 && sync4[1] == 0x00 && sync4[2] == 0x01) {
p->stream_id = sync4[3];
switch ( sync4[3] ) {
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
case PADDING_STREAM :
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
if((neof = save_read(f,p->llength,2)) < 2)
return -1;
setl_pes(p);
if (!p->length){
p->length = find_length(f);
nl_pes(p);
}
found = 1;
break;
default:
if (lseek(f,po+1,SEEK_SET) < po+1) return -1;
break;
}
} else if(lseek(f,po+1,SEEK_SET) < po+1) return -1;
}
if (!found || !p->length) return 0;
if (p->length >0){
buf = (uint8_t *) malloc(p->length);
if((neof = save_read(f,buf,p->length))< p->length) return -1;
cread_pes((char *)buf,p);
free(buf);
} else return 0;
return neof;
}
/*
Transport Stream
*/
void init_ts(ts_packet *p){
p->pid[0] = 0;
p->pid[1] = 0;
p->flags = 0;
p->count = 0;
p->adapt_length = 0;
p->adapt_flags = 0;
p->splice_count = 0;
p->priv_dat_len = 0;
p->priv_dat = NULL;
p->adapt_ext_len = 0;
p->adapt_eflags = 0;
p->rest = 0;
p->stuffing = 0;
}
void kill_ts(ts_packet *p){
if (p->priv_dat)
free(p->priv_dat);
init_ts(p);
}
unsigned short pid_ts(ts_packet *p)
{
return get_pid(p->pid);
}
int cwrite_ts(uint8_t *buf, ts_packet *p, long length){
long count,i;
uint8_t sync,dummy;
sync = 0x47;
memcpy(buf,&sync,1);
count = 1;
memcpy(buf+count,p->pid,2);
count += 2;
memcpy(buf+count,&p->flags,1);
count++;
if (! (p->flags & ADAPT_FIELD) && (p->flags & PAYLOAD)){
memcpy(buf+count,p->data,184);
count += 184;
} else {
memcpy(buf+count,&p->adapt_length,1);
count++;
memcpy(buf+count,&p->adapt_flags,1);
count++;
if ( p->adapt_flags & PCR_FLAG ){
memcpy(buf+count, p->pcr,6);
count += 6;
}
if ( p->adapt_flags & OPCR_FLAG ){
memcpy(buf+count, p->opcr,6);
count += 6;
}
if ( p->adapt_flags & SPLICE_FLAG ){
memcpy(buf+count, &p->splice_count,1);
count++;
}
if( p->adapt_flags & TRANS_PRIV){
memcpy(buf+count,&p->priv_dat_len,1);
count++;
memcpy(buf+count,p->priv_dat,p->priv_dat_len);
count += p->priv_dat_len;
}
if( p->adapt_flags & ADAP_EXT_FLAG){
memcpy(buf+count,&p->adapt_ext_len,1);
count++;
memcpy(buf+count,&p->adapt_eflags,1);
count++;
if( p->adapt_eflags & LTW_FLAG){
memcpy(buf+count,p->ltw,2);
count += 2;
}
if( p->adapt_eflags & PIECE_RATE){
memcpy(buf+count,p->piece_rate,3);
count += 3;
}
if( p->adapt_eflags & SEAM_SPLICE){
memcpy(buf+count,p->dts,5);
count += 5;
}
}
dummy = 0xFF;
for(i=0; i < p->stuffing ; i++){
memcpy(buf+count,&dummy,1);
count++;
}
if (p->flags & PAYLOAD){
memcpy(buf+count,p->data,p->rest);
count += p->rest;
}
}
return count;
}
void write_ts(int fd, ts_packet *p){
long length;
uint8_t buf[TS_SIZE];
length = cwrite_ts(buf,p,TS_SIZE);
write(fd,buf,length);
}
int read_ts (int f, ts_packet *p){
uint8_t sync;
int found=0;
uint64_t po,q;
int neof = 1;
sync=0;
while (neof > 0 && !found) {
neof = save_read(f,&sync,1);
if (sync == 0x47)
found = 1;
}
neof = save_read(f,p->pid,2);
neof = save_read(f,&p->flags,1);
p->count = p->flags & COUNT_MASK;
if (!(p->flags & ADAPT_FIELD) && (p->flags & PAYLOAD)){
//no adapt. field only payload
neof = save_read(f,p->data,184);
p->rest = 184;
return neof;
}
if ( p->flags & ADAPT_FIELD ) {
// adaption field
neof = save_read(f,&p->adapt_length,1);
po = lseek(f,0,SEEK_CUR);
neof = save_read(f,&p->adapt_flags,1);
if ( p->adapt_flags & PCR_FLAG )
neof = save_read(f, p->pcr,6);
if ( p->adapt_flags & OPCR_FLAG )
neof = save_read(f, p->opcr,6);
if ( p->adapt_flags & SPLICE_FLAG )
neof = save_read(f, &p->splice_count,1);
if( p->adapt_flags & TRANS_PRIV){
neof = save_read(f,&p->priv_dat_len,1);
p->priv_dat = (uint8_t *) malloc(p->priv_dat_len);
neof = save_read(f,p->priv_dat,p->priv_dat_len);
}
if( p->adapt_flags & ADAP_EXT_FLAG){
neof = save_read(f,&p->adapt_ext_len,1);
neof = save_read(f,&p->adapt_eflags,1);
if( p->adapt_eflags & LTW_FLAG)
neof = save_read(f,p->ltw,2);
if( p->adapt_eflags & PIECE_RATE)
neof = save_read(f,p->piece_rate,3);
if( p->adapt_eflags & SEAM_SPLICE)
neof = save_read(f,p->dts,5);
}
q = lseek(f,0,SEEK_CUR);
p->stuffing = p->adapt_length -(q-po);
p->rest = 183-p->adapt_length;
lseek(f,q+p->stuffing,SEEK_SET);
if (p->flags & PAYLOAD) // payload
neof = save_read(f,p->data,p->rest);
else
lseek(f,q+p->rest,SEEK_SET);
}
return neof;
}
void cread_ts (char *buf, ts_packet *p, long length){
uint8_t sync;
int found=0;
uint64_t po,q;
long count=0;
sync=0;
while (count < length && !found) {
sync=buf[count];
count++;
if (sync == 0x47)
found = 1;
}
memcpy(p->pid,buf+count,2);
count += 2;
p->flags = buf[count];
count++;
p->count = p->flags & COUNT_MASK;
if (!(p->flags & ADAPT_FIELD) && (p->flags & PAYLOAD)){
//no adapt. field only payload
memcpy(p->data,buf+count,184);
p->rest = 184;
return;
}
if ( p->flags & ADAPT_FIELD ) {
// adaption field
p->adapt_length = buf[count];
count++;
po = count;
memcpy(&p->adapt_flags,buf+count,1);
count++;
if ( p->adapt_flags & PCR_FLAG ){
memcpy( p->pcr,buf+count,6);
count += 6;
}
if ( p->adapt_flags & OPCR_FLAG ){
memcpy( p->opcr,buf+count,6);
count += 6;
}
if ( p->adapt_flags & SPLICE_FLAG ){
memcpy( &p->splice_count,buf+count,1);
count++;
}
if( p->adapt_flags & TRANS_PRIV){
memcpy(&p->priv_dat_len,buf+count,1);
count++;
p->priv_dat = (uint8_t *) malloc(p->priv_dat_len);
memcpy(p->priv_dat,buf+count,p->priv_dat_len);
count += p->priv_dat_len;
}
if( p->adapt_flags & ADAP_EXT_FLAG){
memcpy(&p->adapt_ext_len,buf+count,1);
count++;
memcpy(&p->adapt_eflags,buf+count,1);
count++;
if( p->adapt_eflags & LTW_FLAG){
memcpy(p->ltw,buf+count,2);
count += 2;
}
if( p->adapt_eflags & PIECE_RATE){
memcpy(p->piece_rate,buf+count,3);
count += 3;
}
if( p->adapt_eflags & SEAM_SPLICE){
memcpy(p->dts,buf+count,5);
count += 5;
}
}
q = count;
p->stuffing = p->adapt_length -(q-po);
p->rest = 183-p->adapt_length;
count = q+p->stuffing;
if (p->flags & PAYLOAD){ // payload
memcpy(p->data,buf+count,p->rest);
count += p->rest;
} else
count = q+p->rest;
}
}
/*
Program Stream
*/
void init_ps(ps_packet *p)
{
p->stuff_length=0xF8;
p->data = NULL;
p->sheader_length = 0;
p->audio_bound = 0;
p->video_bound = 0;
p->npes = 0;
p->mpeg = 2;
}
void kill_ps(ps_packet *p)
{
if (p->data)
free(p->data);
init_ps(p);
}
void setlength_ps(ps_packet *p)
{
short *ll;
ll = (short *) p->sheader_llength;
if (p->mpeg == 2)
p->sheader_length = ntohs(*ll) - 6;
else
p->sheader_length = ntohs(*ll);
}
static void setl_ps(ps_packet *p)
{
setlength_ps(p);
p->data = (uint8_t *) malloc(p->sheader_length);
}
int mux_ps(ps_packet *p)
{
uint32_t mux = 0;
uint8_t *i = (uint8_t *)&mux;
i[1] = p->mux_rate[0];
i[2] = p->mux_rate[1];
i[3] = p->mux_rate[2];
mux = ntohl(mux);
mux = (mux >>2);
return mux;
}
int rate_ps(ps_packet *p)
{
uint32_t rate=0;
uint8_t *i= (uint8_t *) &rate;
i[1] = p->rate_bound[0] & 0x7F;
i[2] = p->rate_bound[1];
i[3] = p->rate_bound[2];
rate = ntohl(rate);
rate = (rate >> 1);
return rate;
}
uint32_t scr_base_ps(ps_packet *p) // only 32 bit!!
{
uint32_t base = 0;
uint8_t *buf = (uint8_t *)&base;
buf[0] |= (long int)((p->scr[0] & 0x18) << 3);
buf[0] |= (long int)((p->scr[0] & 0x03) << 4);
buf[0] |= (long int)((p->scr[1] & 0xF0) >> 4);
buf[1] |= (long int)((p->scr[1] & 0x0F) << 4);
buf[1] |= (long int)((p->scr[2] & 0xF0) >> 4);
buf[2] |= (long int)((p->scr[2] & 0x08) << 4);
buf[2] |= (long int)((p->scr[2] & 0x03) << 5);
buf[2] |= (long int)((p->scr[3] & 0xF8) >> 3);
buf[3] |= (long int)((p->scr[3] & 0x07) << 5);
buf[3] |= (long int)((p->scr[4] & 0xF8) >> 3);
base = ntohl(base);
return base;
}
uint16_t scr_ext_ps(ps_packet *p)
{
short ext = 0;
ext = (short)(p->scr[5] >> 1);
ext += (short) (p->scr[4] & 0x03) * 128;
return ext;
}
int cwrite_ps(uint8_t *buf, ps_packet *p, long length)
{
long count,i;
uint8_t headr1[4] = {0x00, 0x00, 0x01, 0xBA };
uint8_t headr2[4] = {0x00, 0x00, 0x01, 0xBB };
uint8_t buffy = 0xFF;
memcpy(buf,headr1,4);
count = 4;
if (p->mpeg == 2){
memcpy(buf+count,p->scr,6);
count += 6;
memcpy(buf+count,p->mux_rate,3);
count += 3;
memcpy(buf+count,&p->stuff_length,1);
count++;
for(i=0; i< (p->stuff_length & 3); i++){
memcpy(buf+count,&buffy,1);
count++;
}
} else {
memcpy(buf+count,p->scr,5);
count += 5;
memcpy(buf+count,p->mux_rate,3);
count += 3;
}
if (p->sheader_length){
memcpy(buf+count,headr2,4);
count += 4;
memcpy(buf+count,p->sheader_llength,2);
count += 2;
if ( p->mpeg == 2){
memcpy(buf+count,p->rate_bound,3);
count += 3;
memcpy(buf+count,&p->audio_bound,1);
count++;
memcpy(buf+count,&p->video_bound,1);
count++;
memcpy(buf+count,&p->reserved,1);
count++;
}
memcpy(buf+count,p->data,p->sheader_length);
count += p->sheader_length;
}
return count;
}
void write_ps(int fd, ps_packet *p){
long length;
uint8_t buf[PS_MAX];
length = cwrite_ps(buf,p,PS_MAX);
write(fd,buf,length);
}
int read_ps (int f, ps_packet *p){
uint8_t headr[4];
pes_packet pes;
int i,done;
int found=0;
uint64_t po = 0;
uint64_t q = 0;
long count = 0;
int neof = 1;
po = lseek(f,0,SEEK_CUR);
while (neof > 0 && !found && count < MAX_SEARCH) {
neof = save_read(f,&headr,4);
if (headr[0] == 0x00 && headr[1] == 0x00 && headr[2] == 0x01){
if ( headr[3] == 0xBA )
found = 1;
else
if ( headr[3] == 0xB9 ) break;
else lseek(f,po+1,SEEK_SET);
}
count++;
}
if (found){
neof = save_read(f,p->scr,6);
if (p->scr[0] & 0x40)
p->mpeg = 2;
else
p->mpeg = 1;
if (p->mpeg == 2){
neof = save_read(f,p->mux_rate,3);
neof = save_read(f,&p->stuff_length,1);
po = lseek(f,0,SEEK_CUR);
lseek(f,po+(p->stuff_length & 3),SEEK_SET);
} else {
p->mux_rate[0] = p->scr[5]; //mpeg1 scr is only 5 bytes
neof = save_read(f,p->mux_rate+1,2);
}
po = lseek(f,0,SEEK_CUR);
neof = save_read(f,headr,4);
if (headr[0] == 0x00 && headr[1] == 0x00 &&
headr[2] == 0x01 && headr[3] == 0xBB ) {
neof = save_read(f,p->sheader_llength,2);
setl_ps(p);
if (p->mpeg == 2){
neof = save_read(f,p->rate_bound,3);
neof = save_read(f,&p->audio_bound,1);
neof = save_read(f,&p->video_bound,1);
neof = save_read(f,&p->reserved,1);
}
neof = save_read(f,p->data,p->sheader_length);
} else {
lseek(f,po,SEEK_SET);
p->sheader_length = 0;
}
i = 0;
done = 0;
q = lseek(f,0,SEEK_CUR);
do {
po = lseek(f,0,SEEK_CUR);
neof = save_read(f,headr,4);
lseek(f,po,SEEK_SET);
if ( headr[0] == 0x00 && headr[1] == 0x00
&& headr[2] == 0x01 && headr[3] != 0xBA){
init_pes(&pes);
neof = read_pes(f,&pes);
i++;
} else done = 1;
kill_pes(&pes);
} while ( neof > 0 && !done);
p->npes = i;
lseek(f,q,SEEK_SET);
}
return neof;
}
void cread_ps (char *buf, ps_packet *p, long length){
uint8_t *headr;
pes_packet pes;
int i,done;
int found=0;
uint64_t po = 0;
uint64_t q = 0;
long count = 0;
long c = 0;
po = c;
while ( count < length && !found && count < MAX_SEARCH) {
headr = (uint8_t *)buf+c;
c += 4;
if (headr[0] == 0x00 && headr[1] == 0x00 && headr[2] == 0x01){
if ( headr[3] == 0xBA )
found = 1;
else
if ( headr[3] == 0xB9 ) break;
else c = po+1;
}
count++;
}
if (found){
memcpy(p->scr,buf+c,6);
c += 6;
if (p->scr[0] & 0x40)
p->mpeg = 2;
else
p->mpeg = 1;
if (p->mpeg == 2){
memcpy(p->mux_rate,buf+c,3);
c += 3;
memcpy(&p->stuff_length,buf+c,1);
c++;
po = c;
c = po+(p->stuff_length & 3);
} else {
p->mux_rate[0] = p->scr[5]; //mpeg1 scr is only 5 bytes
memcpy(p->mux_rate+1,buf+c,2);
c += 2;
}
po = c;
headr = (uint8_t *)buf+c;
c += 4;
if (headr[0] == 0x00 && headr[1] == 0x00 &&
headr[2] == 0x01 && headr[3] == 0xBB ) {
memcpy(p->sheader_llength,buf+c,2);
c += 2;
setl_ps(p);
if (p->mpeg == 2){
memcpy(p->rate_bound,buf+c,3);
c += 3;
memcpy(&p->audio_bound,buf+c,1);
c++;
memcpy(&p->video_bound,buf+c,1);
c++;
memcpy(&p->reserved,buf+c,1);
c++;
}
memcpy(p->data,buf+c,p->sheader_length);
c += p->sheader_length;
} else {
c = po;
p->sheader_length = 0;
}
i = 0;
done = 0;
q = c;
do {
headr = (uint8_t *)buf+c;
if ( headr[0] == 0x00 && headr[1] == 0x00
&& headr[2] == 0x01 && headr[3] != 0xBA){
init_pes(&pes);
// cread_pes(buf+c,&pes);
i++;
} else done = 1;
kill_pes(&pes);
} while (c < length && !done);
p->npes = i;
c = q;
}
}
/*
conversion
*/
void init_trans(trans *p)
{
int i;
p->found = 0;
p->pes = 0;
p->is_full = 0;
p->pes_start = 0;
p->pes_started = 0;
p->set = 0;
for (i = 0; i < MASKL*MAXFILT ; i++){
p->mask[i] = 0;
p->filt[i] = 0;
}
for (i = 0; i < MAXFILT ; i++){
p->sec[i].found = 0;
p->sec[i].length = 0;
}
}
int set_trans_filt(trans *p, int filtn, uint16_t pid, uint8_t *mask, uint8_t *filt, int pes)
{
int i;
int off;
if ( filtn > MAXFILT-1 || filtn<0 ) return -1;
p->pid[filtn] = pid;
if (pes) p->pes |= (tflags)(1 << filtn);
else {
off = MASKL*filtn;
p->pes &= ~((tflags) (1 << filtn) );
for (i = 0; i < MASKL ; i++){
p->mask[off+i] = mask[i];
p->filt[off+i] = filt[i];
}
}
p->set |= (tflags) (1 << filtn);
return 0;
}
void clear_trans_filt(trans *p,int filtn)
{
int i;
p->set &= ~((tflags) (1 << filtn) );
p->pes &= ~((tflags) (1 << filtn) );
p->is_full &= ~((tflags) (1 << filtn) );
p->pes_start &= ~((tflags) (1 << filtn) );
p->pes_started &= ~((tflags) (1 << filtn) );
for (i = MASKL*filtn; i < MASKL*(filtn+1) ; i++){
p->mask[i] = 0;
p->filt[i] = 0;
}
p->sec[filtn].found = 0;
p->sec[filtn].length = 0;
}
int filt_is_set(trans *p, int filtn)
{
if (p->set & ((tflags)(1 << filtn))) return 1;
return 0;
}
int pes_is_set(trans *p, int filtn)
{
if (p->pes & ((tflags)(1 << filtn))) return 1;
return 0;
}
int pes_is_started(trans *p, int filtn)
{
if (p->pes_started & ((tflags)(1 << filtn))) return 1;
return 0;
}
int pes_is_start(trans *p, int filtn)
{
if (p->pes_start & ((tflags)(1 << filtn))) return 1;
return 0;
}
int filt_is_ready(trans *p,int filtn)
{
if (p->is_full & ((tflags)(1 << filtn))) return 1;
return 0;
}
void trans_filt(uint8_t *buf, int count, trans *p)
{
int c=0;
//fprintf(stderr,"trans_filt\n");
while (c < count && p->found <1 ){
if ( buf[c] == 0x47) p->found = 1;
c++;
p->packet[0] = 0x47;
}
if (c == count) return;
while( c < count && p->found < 188 && p->found > 0 ){
p->packet[p->found] = buf[c];
c++;
p->found++;
}
if (p->found == 188){
p->found = 0;
tfilter(p);
}
if (c < count) trans_filt(buf+c,count-c,p);
}
void tfilter(trans *p)
{
int l,c;
int tpid;
uint8_t flag,flags;
uint8_t adapt_length = 0;
uint8_t cpid[2];
// fprintf(stderr,"tfilter\n");
cpid[0] = p->packet[1];
cpid[1] = p->packet[2];
tpid = get_pid(cpid);
if ( p->packet[1]&0x80){
fprintf(stderr,"Error in TS for PID: %d\n",
tpid);
}
flag = cpid[0];
flags = p->packet[3];
if ( flags & ADAPT_FIELD ) {
// adaption field
adapt_length = p->packet[4];
}
c = 5 + adapt_length - (int)(!(flags & ADAPT_FIELD));
if (flags & PAYLOAD){
for ( l = 0; l < MAXFILT ; l++){
if ( filt_is_set(p,l) ) {
if ( p->pid[l] == tpid) {
if ( pes_is_set(p,l) ){
if (cpid[0] & PAY_START){
p->pes_started |=
(tflags)
(1 << l);
p->pes_start |=
(tflags)
(1 << l);
} else {
p->pes_start &= ~
((tflags)
(1 << l));
}
pes_filter(p,l,c);
} else {
sec_filter(p,l,c);
}
}
}
}
}
}
void pes_filter(trans *p, int filtn, int off)
{
int count,c;
uint8_t *buf;
if (filtn < 0 || filtn >= MAXFILT) return;
count = 188 - off;
c = 188*filtn;
buf = p->packet+off;
if (pes_is_started(p,filtn)){
p->is_full |= (tflags) (1 << filtn);
memcpy(p->transbuf+c,buf,count);
p->transcount[filtn] = count;
}
}
section *get_filt_sec(trans *p, int filtn)
{
section *sec;
sec = &p->sec[filtn];
p->is_full &= ~((tflags) (1 << filtn) );
return sec;
}
int get_filt_buf(trans *p, int filtn,uint8_t **buf)
{
*buf = p->transbuf+188*filtn;
p->is_full &= ~((tflags) (1 << filtn) );
return p->transcount[filtn];
}
void sec_filter(trans *p, int filtn, int off)
{
int i,j;
int error;
int count,c;
uint8_t *buf, *secbuf;
section *sec;
// fprintf(stderr,"sec_filter\n");
if (filtn < 0 || filtn >= MAXFILT) return;
count = 188 - off;
c = 0;
buf = p->packet+off;
sec = &p->sec[filtn];
secbuf = sec->payload;
if(!filt_is_ready(p,filtn)){
p->is_full &= ~((tflags) (1 << filtn) );
sec->found = 0;
sec->length = 0;
}
if ( !sec->found ){
c = buf[c]+1;
if (c >= count) return;
sec->id = buf[c];
secbuf[0] = buf[c];
c++;
sec->found++;
sec->length = 0;
}
while ( c < count && sec->found < 3){
secbuf[sec->found] = buf[c];
c++;
sec->found++;
}
if (c == count) return;
if (!sec->length && sec->found == 3){
sec->length |= ((secbuf[1] & 0x0F) << 8);
sec->length |= (secbuf[2] & 0xFF);
}
while ( c < count && sec->found < sec->length+3){
secbuf[sec->found] = buf[c];
c++;
sec->found++;
}
if ( sec->length && sec->found == sec->length+3 ){
error=0;
for ( i = 0; i < MASKL; i++){
if (i > 0 ) j=2+i;
else j = 0;
error += (sec->payload[j]&p->mask[MASKL*filtn+i])^
(p->filt[MASKL*filtn+i]&
p->mask[MASKL*filtn+i]);
}
if (!error){
p->is_full |= (tflags) (1 << filtn);
}
if (buf[0]+1 < c ) c=count;
}
if ( c < count ) sec_filter(p, filtn, off);
}
#define MULT 1024
void write_ps_headr( ps_packet *p, uint8_t *pts,int fd)
{
long muxr = 37500;
uint8_t audio_bound = 1;
uint8_t fixed = 0;
uint8_t CSPS = 0;
uint8_t audio_lock = 1;
uint8_t video_lock = 1;
uint8_t video_bound = 1;
uint8_t stream1 = 0XC0;
uint8_t buffer1_scale = 1;
uint32_t buffer1_size = 32;
uint8_t stream2 = 0xE0;
uint8_t buffer2_scale = 1;
uint32_t buffer2_size = 230;
init_ps(p);
p->mpeg = 2;
// SCR = 0
p->scr[0] = 0x44;
p->scr[1] = 0x00;
p->scr[2] = 0x04;
p->scr[3] = 0x00;
p->scr[4] = 0x04;
p->scr[5] = 0x01;
// SCR = PTS
p->scr[0] = 0x44 | ((pts[0] >> 3)&0x18) | ((pts[0] >> 4)&0x03);
p->scr[1] = 0x00 | ((pts[0] << 4)&0xF0) | ((pts[1] >> 4)&0x0F);
p->scr[2] = 0x04 | ((pts[1] << 4)&0xF0) | ((pts[2] >> 4)&0x08)
| ((pts[2] >> 5)&0x03);
p->scr[3] = 0x00 | ((pts[2] << 3)&0xF8) | ((pts[3] >> 5)&0x07);
p->scr[4] = 0x04 | ((pts[3] << 3)&0xF8);
p->scr[5] = 0x01;
p->mux_rate[0] = (uint8_t)(muxr >> 14);
p->mux_rate[1] = (uint8_t)(0xff & (muxr >> 6));
p->mux_rate[2] = (uint8_t)(0x03 | ((muxr & 0x3f) << 2));
p->stuff_length = 0xF8;
p->sheader_llength[0] = 0x00;
p->sheader_llength[1] = 0x0c;
setl_ps(p);
p->rate_bound[0] = (uint8_t)(0x80 | (muxr >>15));
p->rate_bound[1] = (uint8_t)(0xff & (muxr >> 7));
p->rate_bound[2] = (uint8_t)(0x01 | ((muxr & 0x7f)<<1));
p->audio_bound = (uint8_t)((audio_bound << 2)|(fixed << 1)|CSPS);
p->video_bound = (uint8_t)((audio_lock << 7)|
(video_lock << 6)|0x20|video_bound);
p->reserved = (uint8_t)(0xFF);
p->data[0] = stream2;
p->data[1] = (uint8_t) (0xc0 | (buffer2_scale << 5) |
(buffer2_size >> 8));
p->data[2] = (uint8_t) (buffer2_size & 0xff);
p->data[3] = stream1;
p->data[4] = (uint8_t) (0xc0 | (buffer1_scale << 5) |
(buffer1_size >> 8));
p->data[5] = (uint8_t) (buffer1_size & 0xff);
write_ps(fd, p);
kill_ps(p);
}
void twrite(uint8_t const *buf)
{
int l = TS_SIZE;
int c = 0;
int w;
while (l){
w = write(STDOUT_FILENO,buf+c,l);
if (w>=0){
l-=w;
c+=w;
}
}
}
void init_p2t(p2t_t *p, void (*fkt)(uint8_t const *buf))
{
memset(p->pes,0,TS_SIZE);
p->counter = 0;
p->pos = 0;
p->frags = 0;
if (fkt) p->t_out = fkt;
else p->t_out = twrite;
}
void clear_p2t(p2t_t *p)
{
memset(p->pes,0,TS_SIZE);
p->counter = 0;
p->pos = 0;
p->frags = 0;
}
long int find_pes_header(uint8_t const *buf, long int length, int *frags)
{
int c = 0;
int found = 0;
*frags = 0;
while (c < length-3 && !found) {
if (buf[c] == 0x00 && buf[c+1] == 0x00 &&
buf[c+2] == 0x01) {
switch ( buf[c+3] ) {
case 0xBA:
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
case PADDING_STREAM :
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
found = 1;
break;
default:
c++;
break;
}
} else c++;
}
if (c == length-3 && !found){
if (buf[length-1] == 0x00) *frags = 1;
if (buf[length-2] == 0x00 &&
buf[length-1] == 0x00) *frags = 2;
if (buf[length-3] == 0x00 &&
buf[length-2] == 0x00 &&
buf[length-1] == 0x01) *frags = 3;
return -1;
}
return c;
}
void pes_to_ts( uint8_t const *buf, long int length, uint16_t pid, p2t_t *p)
{
int c,c2,l,add;
int check,rest;
c = 0;
c2 = 0;
if (p->frags){
check = 0;
switch(p->frags){
case 1:
if ( buf[c] == 0x00 && buf[c+1] == 0x01 ){
check = 1;
c += 2;
}
break;
case 2:
if ( buf[c] == 0x01 ){
check = 1;
c++;
}
break;
case 3:
check = 1;
}
if(check){
switch ( buf[c] ) {
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
case PADDING_STREAM :
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
p->pes[0] = 0x00;
p->pes[1] = 0x00;
p->pes[2] = 0x01;
p->pes[3] = buf[c];
p->pos=4;
memcpy(p->pes+p->pos,buf+c,TS_SIZE-4-p->pos);
c += TS_SIZE-4-p->pos;
p_to_t(p->pes,TS_SIZE-4,pid,&p->counter,
p->t_out);
clear_p2t(p);
break;
default:
c=0;
break;
}
}
p->frags = 0;
}
if (p->pos){
c2 = find_pes_header(buf+c,length-c,&p->frags);
if (c2 >= 0 && c2 < TS_SIZE-4-p->pos){
l = c2+c;
} else l = TS_SIZE-4-p->pos;
memcpy(p->pes+p->pos,buf,l);
c += l;
p->pos += l;
p_to_t(p->pes,p->pos,pid,&p->counter,
p->t_out);
clear_p2t(p);
}
add = 0;
while (c < length){
c2 = find_pes_header(buf+c+add,length-c-add,&p->frags);
if (c2 >= 0) {
c2 += c+add;
if (c2 > c){
p_to_t(buf+c,c2-c,pid,&p->counter,
p->t_out);
c = c2;
clear_p2t(p);
add = 0;
} else add = 1;
} else {
l = length-c;
rest = l % (TS_SIZE-4);
l -= rest;
p_to_t(buf+c,l,pid,&p->counter,
p->t_out);
memcpy(p->pes,buf+c+l,rest);
p->pos = rest;
c = length;
}
}
}
void p_to_t( uint8_t const *buf, long int length, uint16_t pid, uint8_t *counter,
void (*ts_write)(uint8_t const *))
{
int l, pes_start;
uint8_t obuf[TS_SIZE];
long int c = 0;
pes_start = 0;
if ( length > 3 &&
buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0x01 )
switch (buf[3]){
case PROG_STREAM_MAP:
case PRIVATE_STREAM2:
case PROG_STREAM_DIR:
case ECM_STREAM :
case EMM_STREAM :
case PADDING_STREAM :
case DSM_CC_STREAM :
case ISO13522_STREAM:
case PRIVATE_STREAM1:
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
pes_start = 1;
break;
default:
break;
}
while ( c < length ){
memset(obuf,0,TS_SIZE);
if (length - c >= TS_SIZE-4){
l = write_ts_header(pid, counter, pes_start
, obuf, TS_SIZE-4);
memcpy(obuf+l, buf+c, TS_SIZE-l);
c += TS_SIZE-l;
} else {
l = write_ts_header(pid, counter, pes_start
, obuf, length-c);
memcpy(obuf+l, buf+c, TS_SIZE-l);
c = length;
}
ts_write(obuf);
pes_start = 0;
}
}
int write_ps_header(uint8_t *buf,
uint32_t SCR,
long muxr,
uint8_t audio_bound,
uint8_t fixed,
uint8_t CSPS,
uint8_t audio_lock,
uint8_t video_lock,
uint8_t video_bound,
uint8_t stream1,
uint8_t buffer1_scale,
uint32_t buffer1_size,
uint8_t stream2,
uint8_t buffer2_scale,
uint32_t buffer2_size)
{
ps_packet p;
uint8_t *pts;
long lpts;
init_ps(&p);
lpts = htonl(SCR);
pts = (uint8_t *) &lpts;
p.mpeg = 2;
// SCR = 0
p.scr[0] = 0x44;
p.scr[1] = 0x00;
p.scr[2] = 0x04;
p.scr[3] = 0x00;
p.scr[4] = 0x04;
p.scr[5] = 0x01;
// SCR = PTS
p.scr[0] = 0x44 | ((pts[0] >> 3)&0x18) | ((pts[0] >> 4)&0x03);
p.scr[1] = 0x00 | ((pts[0] << 4)&0xF0) | ((pts[1] >> 4)&0x0F);
p.scr[2] = 0x04 | ((pts[1] << 4)&0xF0) | ((pts[2] >> 4)&0x08)
| ((pts[2] >> 5)&0x03);
p.scr[3] = 0x00 | ((pts[2] << 3)&0xF8) | ((pts[3] >> 5)&0x07);
p.scr[4] = 0x04 | ((pts[3] << 3)&0xF8);
p.scr[5] = 0x01;
p.mux_rate[0] = (uint8_t)(muxr >> 14);
p.mux_rate[1] = (uint8_t)(0xff & (muxr >> 6));
p.mux_rate[2] = (uint8_t)(0x03 | ((muxr & 0x3f) << 2));
p.stuff_length = 0xF8;
if (stream1 && stream2){
p.sheader_llength[0] = 0x00;
p.sheader_llength[1] = 0x0c;
setl_ps(&p);
p.rate_bound[0] = (uint8_t)(0x80 | (muxr >>15));
p.rate_bound[1] = (uint8_t)(0xff & (muxr >> 7));
p.rate_bound[2] = (uint8_t)(0x01 | ((muxr & 0x7f)<<1));
p.audio_bound = (uint8_t)((audio_bound << 2)|(fixed << 1)|CSPS);
p.video_bound = (uint8_t)((audio_lock << 7)|
(video_lock << 6)|0x20|video_bound);
p.reserved = (uint8_t)(0xFF >> 1);
p.data[0] = stream2;
p.data[1] = (uint8_t) (0xc0 | (buffer2_scale << 5) |
(buffer2_size >> 8));
p.data[2] = (uint8_t) (buffer2_size & 0xff);
p.data[3] = stream1;
p.data[4] = (uint8_t) (0xc0 | (buffer1_scale << 5) |
(buffer1_size >> 8));
p.data[5] = (uint8_t) (buffer1_size & 0xff);
cwrite_ps(buf, &p, PS_HEADER_L2);
kill_ps(&p);
return PS_HEADER_L2;
} else {
cwrite_ps(buf, &p, PS_HEADER_L1);
kill_ps(&p);
return PS_HEADER_L1;
}
}
#define MAX_BASE 80
#define MAX_PATH 256
#define MAX_EXT 10
int break_up_filename(char *name, char *base_name, char *path, char *ext)
{
int l,i,sstop,sstart;
l = strlen(name);
sstop = l;
sstart = -1;
for( i= l-1; i >= 0; i--){
if (sstop == l && name[i] == '.') sstop = i;
if (sstart<0 && name[i] == '/') sstart = i+1;
}
if (sstart < 0) sstart = 0;
if (sstop-sstart < MAX_BASE){
strncpy(base_name, name+sstart, sstop-sstart);
base_name[sstop-sstart]=0;
if(sstart > 0){
if( l - sstop + sstart < MAX_PATH){
strncpy(path, name, sstart);
path[sstart] = 0;
} else {
fprintf(stderr,"PATH too long\n");
return -1;
}
} else {
strcpy(path, "./");
}
if(sstop < l){
if( l - sstop -1 < MAX_EXT){
strncpy(ext, name+sstop+1, l-sstop-1);
ext[l-sstop-1]=0;
} else {
fprintf(stderr,"Extension too long\n");
return -1;
}
} else {
strcpy(ext, "");
}
} else {
fprintf(stderr,"Name too long\n");
return -1;
}
/*
printf("%d %d\n",sstart, sstop);
printf("%s %d\n",name, strlen(name));
printf("%s %d\n",base_name, strlen(base_name));
printf("%s %d\n",path,strlen(path));
printf("%s %d\n",ext,strlen(ext));
*/
return 0;
}
int seek_mpg_start(uint8_t *buf, int size)
{
int found = 0;
int c=0;
int seq = 0;
int mpeg = 0;
int mark = 0;
while ( !seq ){
while (found != 4){
switch (found) {
case 0:
if ( buf[c] == 0x00 ) found++;
c++;
break;
case 1:
if ( buf[c] == 0x00 ) found++;
else found = 0;
c++;
break;
case 2:
if ( buf[c] == 0x01 ) found++;
else found = 0;
if ( buf[c] == 0x00 ) found = 2;
c++;
break;
case 3:
if ( (buf[c] & 0xe0) == 0xe0 ) found++;
else found = 0;
c++;
break;
}
if (c >= size) return -1;
}
if (found == 4){
mark = c-4;
c+=2;
if (c >= size) return -1;
if ( (buf[c] & 0xC0) == 0x80 ){
mpeg = 2;
c += 2;
if (c >= size) return -1;
c += buf[c]+1;
if (c >= size) return -1;
} else {
mpeg = 1;
while( buf[c] == 0xFF ) {
c++;
if (c >= size) return -1;
}
if ( (buf[c] & 0xC0) == 0x40) c+=2;
if (c >= size) return -1;
if ( (buf[c] & 0x30) ){
if ( (buf[c] & 0x30) == 0x20) c+=5;
else c+=10;
} else c++;
if (c >= size) return -1;
}
if ( buf[c] == 0x00 &&
buf[c+1] == 0x00 &&
buf[c+2] == 0x01 &&
buf[c+3] == 0xB3 )
seq = 1;
}
found = 0;
}
return size-mark;
}
void write_mpg(int fstart, uint64_t length, int fdin, int fdout)
{
// uint8_t mpeg_end[4] = { 0x00, 0x00, 0x01, 0xB9 };
uint8_t *buf;
uint64_t l=0;
uint64_t count = 0;
struct stat sb;
int buf_size;
fstat (fdout, &sb);
buf_size = sb.st_blksize;
buf = (uint8_t *) alloca (buf_size + sizeof (int));
lseek(fdin, fstart, SEEK_SET);
while ( count < length && (l = read(fdin,buf,buf_size)) >= 0){
if (l > 0) count+=l;
write(fdout,buf,l);
printf("written %02.2f%%\r",(100.*count)/length);
}
printf("\n");
//write( fdout, mpeg_end, 4);
}
#define CHECKBUF (1024*1024)
#define ONE_GIG (1024UL*1024UL*1024UL)
void split_mpg(char *name, uint64_t size)
{
char base_name[MAX_BASE];
char path[MAX_PATH];
char ext[MAX_EXT];
char new_name[256];
uint8_t buf[CHECKBUF];
int fdin;
int fdout;
uint64_t length = 0;
uint64_t last;
int i;
int mark, csize;
struct stat sb;
if (break_up_filename(name,base_name,path,ext) < 0) exit(1);
#ifdef __FreeBSD__
if ( (fdin = open(name, O_RDONLY)) < 0){
#else
if ( (fdin = open(name, O_RDONLY|O_LARGEFILE)) < 0){
#endif
fprintf(stderr,"Can't open %s\n",name);
exit(1);
}
fstat (fdin, &sb);
length = sb.st_size;
if ( length < ONE_GIG )
printf("Filelength = %2.2f MB\n", length/1024./1024.);
else
printf("Filelength = %2.2f GB\n", length/1024./1024./1024.);
if ( length < size ) length = size;
printf("Splitting %s into Files with size <= %2.2f MB\n",name,
size/1024./1024.);
csize = CHECKBUF;
read(fdin, buf, csize);
if ( (mark = seek_mpg_start(buf,csize)) < 0){
fprintf(stderr,"Couldn't find sequence header\n");
exit(1);
}
last = csize-mark;
for ( i = 0 ; i < length/size; i++){
csize = CHECKBUF;
if (csize > length-last) csize = length-last;
lseek(fdin, last+size-csize, SEEK_SET);
read(fdin, buf, csize);
if ( (mark = seek_mpg_start(buf,csize)) < 0){
fprintf(stderr,"Couldn't find sequence header\n");
exit(1);
}
sprintf(new_name,"%s-%03d.%s",base_name,i,ext);
printf("writing %s\n",new_name);
#ifdef __FreeBSD__
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC,
#else
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|O_LARGEFILE,
#endif
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|
S_IROTH|S_IWOTH)) < 0){
fprintf(stderr,"Can't open %s\n",new_name);
exit(1);
}
write_mpg(last, size-mark, fdin, fdout);
last = last + size - mark;
}
sprintf(new_name,"%s-%03d.%s",base_name,i,ext);
printf("writing %s\n",new_name);
#ifdef __FreeBSD__
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC,
#else
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|O_LARGEFILE,
#endif
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|
S_IROTH|S_IWOTH)) < 0){
fprintf(stderr,"Can't open %s\n",new_name);
exit(1);
}
write_mpg(last, length-last, fdin, fdout);
}
void cut_mpg(char *name, uint64_t size)
{
char base_name[MAX_BASE];
char path[MAX_PATH];
char ext[MAX_EXT];
char new_name[256];
uint8_t buf[CHECKBUF];
int fdin;
int fdout;
uint64_t length = 0;
uint64_t last;
int mark, csize;
struct stat sb;
if (break_up_filename(name,base_name,path,ext) < 0) exit(1);
#ifdef __FreeBSD__
if ( (fdin = open(name, O_RDONLY)) < 0){
#else
if ( (fdin = open(name, O_RDONLY|O_LARGEFILE)) < 0){
#endif
fprintf(stderr,"Can't open %s\n",name);
exit(1);
}
fstat (fdin, &sb);
length = sb.st_size;
if ( length < ONE_GIG )
printf("Filelength = %2.2f MB\n", length/1024./1024.);
else
printf("Filelength = %2.2f GB\n", length/1024./1024./1024.);
if ( length < size ) length = size;
printf("Splitting %s into 2 Files with length %.2f MB and %.2f MB\n",
name, size/1024./1024., (length-size)/1024./1024.);
csize = CHECKBUF;
read(fdin, buf, csize);
if ( (mark = seek_mpg_start(buf,csize)) < 0){
fprintf(stderr,"Couldn't find sequence header\n");
exit(1);
}
last = csize-mark;
if (csize > length-last) csize = length-last;
lseek(fdin, last+size-csize, SEEK_SET);
read(fdin, buf, csize);
if ( (mark = seek_mpg_start(buf,csize)) < 0){
fprintf(stderr,"Couldn't find sequence header\n");
exit(1);
}
sprintf(new_name,"%s-1.%s",base_name,ext);
printf("writing %s\n",new_name);
#ifdef __FreeBSD__
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC,
#else
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|O_LARGEFILE,
#endif
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|
S_IROTH|S_IWOTH)) < 0){
fprintf(stderr,"Can't open %s\n",new_name);
exit(1);
}
write_mpg(last, size-mark, fdin, fdout);
last = last + size - mark;
sprintf(new_name,"%s-2.%s",base_name,ext);
printf("writing %s\n",new_name);
#ifdef __FreeBSD__
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC,
#else
if ( (fdout = open(new_name,O_WRONLY|O_CREAT|O_TRUNC
|O_LARGEFILE,
#endif
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|
S_IROTH|S_IWOTH)) < 0){
fprintf(stderr,"Can't open %s\n",new_name);
exit(1);
}
write_mpg(last, length-last, fdin, fdout);
}
void write_all (int fd, const char *data, int length)
{
int r;
while (length) {
if ((r = write(fd, data, length)) > 0) {
data += r;
length -= r;
}
}
}
void read_all (int fd, char *data, int length)
{
int c = 0;
while(1) {
if( read(fd, data+c, 1) == 1) {
c++;
if(data[c-1] == '\n') {
data[c] = 0;
break;
}
}
else {
fprintf (stderr, "Error reading socket\n");
exit(1);
}
}
}
char *url2host (char *url, char **name, uint32_t *ip, uint32_t *port)
{
char *murl;
struct hostent *hoste;
struct in_addr haddr;
int found_ip = 1;
if (!(strncmp(url, "http://", 7)))
url += 7;
*name = strdup(url);
if (!(*name)) {
*name = NULL;
return (NULL);
}
murl = url;
while (*murl && *murl != ':' && *murl != '/') {
if ((*murl < '0' || *murl > '9') && *murl != '.')
found_ip = 0;
murl++;
}
(*name)[murl - url] = 0;
if (found_ip) {
if ((*ip = inet_addr(*name)) == INADDR_NONE)
return (NULL);
} else {
if (!(hoste = gethostbyname(*name)))
return (NULL);
memcpy (&haddr, hoste->h_addr, sizeof(haddr));
*ip = haddr.s_addr;
}
if (!*murl || *murl == '/') {
*port = 80;
return (murl);
}
*port = atoi(++murl);
while (*murl && *murl != '/')
murl++;
return (murl);
}
#define ACCEPT "Accept: video/mpeg, video/x-mpegurl, */*\r\n"
int http_open (char *url)
{
char purl[1024], *host, req[1024], *sptr;
uint32_t ip;
uint32_t port;
int sock;
int reloc, relocnum = 0;
struct sockaddr_in server;
int mfd;
strncpy (purl, url, 1023);
purl[1023] = '\0';
do {
host = NULL;
strcpy (req, "GET ");
if (!(sptr = url2host(purl, &host, &ip, &port))) {
fprintf (stderr, "Unknown host\n");
exit (1);
}
strcat (req, sptr);
sprintf (req + strlen(req),
" HTTP/1.0\r\nUser-Agent: %s/%s\r\n",
"whatever", "you want");
if (host) {
sprintf(req + strlen(req),
"Host: %s:%u\r\n", host, port);
free (host);
}
strcat (req, ACCEPT);
strcat (req, "\r\n");
server.sin_port = htons(port);
server.sin_family = AF_INET;
server.sin_addr.s_addr = ip;
if ((sock = socket(PF_INET, SOCK_STREAM, 6)) < 0) {
perror ("socket");
exit (1);
}
if (connect(sock, (struct sockaddr *)&server,
sizeof(server))) {
perror ("connect");
exit (1);
}
write_all (sock, req, strlen(req));
if (!(mfd = fileno(fdopen(sock, "rb")))) {
perror ("open");
exit (1);
}
reloc = 0;
purl[0] = '\0';
read_all (mfd, req, 1023);
if ((sptr = strchr(req, ' '))) {
switch (sptr[1]) {
case '2':
break;
case '3':
reloc = 1;
default:
fprintf (stderr, "HTTP req failed:%s",
sptr+1);
exit (1);
}
}
do {
read_all (mfd,req, 1023);
if (!strncmp(req, "Location:", 9))
strncpy (purl, req+10, 1023);
} while (req[0] != '\r' && req[0] != '\n');
} while (reloc && purl[0] && relocnum++ < 3);
if (reloc) {
fprintf (stderr, "Too many HTTP relocations.\n");
exit (1);
}
return sock;
}
extern int errno;
const char * strerrno (void)
{
return strerror(errno);
}
Reference in New Issue View Git Blame Copy Permalink