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vdr-plugin-streamdev/libdvbmpeg/remux.c

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Snapshot 2007-03-20
2010-12-02 08:53:01 +01:00
/*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*
* The author can be reached at mocm@metzlerbros.de,
*/
#include "remux.h"
unsigned int bitrates[3][16] =
{{0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,0},
{0,32,48,56,64,80,96,112,128,160,192,224,256,320,384,0},
{0,32,40,48,56,64,80,96,112,128,160,192,224,256,320,0}};
uint32_t freq[4] = {441, 480, 320, 0};
static uint32_t samples[4] = { 384, 1152, 0, 0};
char *frames[3] = {"I-Frame","P-Frame","B-Frame"};
void copy_ptslm(PTS_List *a, PTS_List *b)
{
a->pos = b->pos;
a->PTS = b->PTS;
a->dts = b->dts;
a->spos = b->spos;
}
void clear_ptslm(PTS_List *a)
{
a->pos = 0;
a->PTS = 0;
a->dts = 0;
a->spos = 0;
}
void init_ptsl(PTS_List *ptsl)
{
int i;
for (i=0;i< MAX_PTS;i++){
clear_ptslm(&ptsl[i]);
}
}
int del_pts(PTS_List *ptsl, int pos, int nr)
{
int i;
int del = 0;
for( i = 0; i < nr-1; i++){
if(pos > ptsl[i].pos && pos >= ptsl[i+1].pos) del++;
}
if(del)
for( i = 0; i < nr-del; i++){
copy_ptslm(&ptsl[i], &ptsl[i+del]);
}
return nr-del;
}
int del_ptss(PTS_List *ptsl, int pts, int *nb)
{
int i;
int del = 0;
int sum = 0;
int nr = *nb;
for( i = 0; i < nr; i++){
if(pts > ptsl[i].PTS){
del++;
sum += ptsl[i].pos;
}
}
if(del)
for( i = 0; i < nr-del; i++){
copy_ptslm(&ptsl[i], &ptsl[i+del]);
}
*nb = nr-del;
return sum;
}
int add_pts(PTS_List *ptsl, uint32_t pts, int pos, int spos, int nr, uint32_t dts)
{
int i;
for ( i=0;i < nr; i++) if (spos && ptsl[i].pos == pos) return nr;
if (nr == MAX_PTS) {
nr = del_pts(ptsl, ptsl[1].pos+1, nr);
} else nr++;
i = nr-1;
ptsl[i].pos = pos;
ptsl[i].spos = spos;
ptsl[i].PTS = pts;
ptsl[i].dts = dts;
return nr;
}
void add_vpts(Remux *rem, uint8_t *pts)
{
uint32_t PTS = trans_pts_dts(pts);
rem->vptsn = add_pts(rem->vpts_list, PTS, rem->vwrite, rem->awrite,
rem->vptsn, PTS);
}
void add_apts(Remux *rem, uint8_t *pts)
{
uint32_t PTS = trans_pts_dts(pts);
rem->aptsn = add_pts(rem->apts_list, PTS, rem->awrite, rem->vwrite,
rem->aptsn, PTS);
}
void del_vpts(Remux *rem)
{
rem->vptsn = del_pts(rem->vpts_list, rem->vread, rem->vptsn);
}
void del_apts(Remux *rem)
{
rem->aptsn = del_pts(rem->apts_list, rem->aread, rem->aptsn);
}
void copy_framelm(FRAME_List *a, FRAME_List *b)
{
a->type = b->type;
a->pos = b->pos;
a->FRAME = b->FRAME;
a->time = b->time;
a->pts = b->pts;
a->dts = b->dts;
}
void clear_framelm(FRAME_List *a)
{
a->type = 0;
a->pos = 0;
a->FRAME = 0;
a->time = 0;
a->pts = 0;
a->dts = 0;
}
void init_framel(FRAME_List *framel)
{
int i;
for (i=0;i< MAX_FRAME;i++){
clear_framelm(&framel[i]);
}
}
int del_frame(FRAME_List *framel, int pos, int nr)
{
int i;
int del = 0;
for( i = 0; i < nr-1; i++){
if(pos > framel[i].pos && pos >= framel[i+1].pos) del++;
}
if(del)
for( i = 0; i < nr-del; i++){
copy_framelm(&framel[i], &framel[i+del]);
}
return nr-del;
}
int add_frame(FRAME_List *framel, uint32_t frame, int pos, int type, int nr,
uint32_t time, uint32_t pts, uint32_t dts)
{
int i;
if (nr == MAX_FRAME) {
nr = del_frame(framel, framel[1].pos+1, nr);
} else nr++;
i = nr-1;
framel[i].type = type;
framel[i].pos = pos;
framel[i].FRAME = frame;
framel[i].time = time;
framel[i].pts = pts;
framel[i].dts = dts;
return nr;
}
void add_vframe(Remux *rem, uint32_t frame, long int pos, int type, int time,
uint32_t pts, uint32_t dts)
{
rem->vframen = add_frame(rem->vframe_list, frame, pos, type,
rem->vframen, time, pts, dts);
}
void add_aframe(Remux *rem, uint32_t frame, long int pos, uint32_t pts)
{
rem->aframen = add_frame(rem->aframe_list, frame, pos, 0,
rem->aframen, 0, pts, pts);
}
void del_vframe(Remux *rem)
{
rem->vframen = del_frame(rem->vframe_list, rem->vread, rem->vframen);
}
void del_aframe(Remux *rem)
{
rem->aframen = del_frame(rem->aframe_list, rem->aread, rem->aframen);
}
void printpts(uint32_t pts)
{
fprintf(stderr,"%2d:%02d:%02d.%03d",
(int)(pts/90000.)/3600,
((int)(pts/90000.)%3600)/60,
((int)(pts/90000.)%3600)%60,
(((int)(pts/90.)%3600000)%60000)%1000
);
}
void find_vframes( Remux *rem, uint8_t *buf, int l)
{
int c = 0;
int type;
uint32_t time = 0;
int hour;
int min;
int sec;
uint64_t pts=0;
uint64_t dts=0;
uint32_t tempref = 0;
while ( c < l - 6){
if (buf[c] == 0x00 &&
buf[c+1] == 0x00 &&
buf[c+2] == 0x01 &&
buf[c+3] == 0xB8) {
c += 4;
hour = (int)((buf[c]>>2)& 0x1F);
min = (int)(((buf[c]<<4)& 0x30)|
((buf[c+1]>>4)& 0x0F));
sec = (int)(((buf[c+1]<<3)& 0x38)|
((buf[c+2]>>5)& 0x07));
time = 3600*hour + 60*min + sec;
if ( rem->time_off){
time = (uint32_t)((uint64_t)time - rem->time_off);
hour = time/3600;
min = (time%3600)/60;
sec = (time%3600)%60;
/*
buf[c] |= (hour & 0x1F) << 2;
buf[c] |= (min & 0x30) >> 4;
buf[c+1] |= (min & 0x0F) << 4;
buf[c+1] |= (sec & 0x38) >> 3;
buf[c+2] |= (sec & 0x07) >> 5;*/
}
rem->group++;
rem->groupframe = 0;
}
if ( buf[c] == 0x00 &&
buf[c+1] == 0x00 &&
buf[c+2] == 0x01 &&
buf[c+3] == 0x00) {
c += 4;
tempref = (buf[c+1]>>6) & 0x03;
tempref |= buf[c] << 2;
type = ((buf[c+1]&0x38) >>3);
if ( rem->video_info.framerate){
pts = ((uint64_t)rem->vframe + tempref + 1
- rem->groupframe ) * 90000ULL
/rem->video_info.framerate
+ rem->vpts_off;
dts = (uint64_t)rem->vframe * 90000ULL/
rem->video_info.framerate
+ rem->vpts_off;
fprintf(stderr,"MYPTS:");
printpts((uint32_t)pts-rem->vpts_off);
fprintf(stderr," REALPTS:");
printpts(rem->vpts_list[rem->vptsn-1].PTS-rem->vpts_off);
fprintf(stderr," DIFF:");
printpts(pts-(uint64_t)rem->vpts_list[rem->vptsn-1].PTS);
// fprintf(stderr," DIST: %4d",-rem->vpts_list[rem->vptsn-1].pos+(rem->vwrite+c-4));
//fprintf(stderr," ERR: %3f",(double)(-rem->vpts_list[rem->vptsn-1].PTS+pts)/(rem->vframe+1));
fprintf(stderr,"\r");
rem->vptsn = add_pts(rem->vpts_list,(uint32_t)pts
,rem->vwrite+c-4,
rem->awrite,
rem->vptsn,
(uint32_t)dts);
}
rem->vframe++;
rem->groupframe++;
add_vframe( rem, rem->vframe, rem->vwrite+c, type,
time, pts, dts);
} else c++;
}
}
void find_aframes( Remux *rem, uint8_t *buf, int l)
{
int c = 0;
uint64_t pts = 0;
int sam;
uint32_t fr;
while ( c < l - 2){
if ( buf[c] == 0xFF &&
(buf[c+1] & 0xF8) == 0xF8) {
c += 2;
if ( rem->audio_info.layer >= 0){
sam = samples[3-rem->audio_info.layer];
fr = freq[rem->audio_info.frequency] ;
pts = ( (uint64_t)rem->aframe * sam * 900ULL)/fr
+ rem->apts_off;
fprintf(stderr,"MYPTS:");
printpts((uint32_t)pts-rem->apts_off);
fprintf(stderr," REALPTS:");
printpts(rem->apts_list[rem->aptsn-1].PTS-rem->apts_off);
fprintf(stderr," DIFF:");
printpts((uint32_t)((uint64_t)rem->apts_list[rem->aptsn-1].PTS-pts));
// fprintf(stderr," DIST: %4d",-rem->apts_list[rem->aptsn-1].pos+(rem->awrite+c-2));
fprintf(stderr,"\r");
rem->aptsn = add_pts(rem->apts_list,(uint32_t)pts
,rem->awrite+c-2,
rem->vwrite,
rem->aptsn,
(uint32_t)pts);
}
rem->aframe++;
add_aframe( rem, rem->aframe, rem->awrite+c, pts);
} else c++;
}
}
int refill_buffy(Remux *rem)
{
pes_packet pes;
int count = 0;
int acount, vcount;
ringbuffy *vbuf = &rem->vid_buffy;
ringbuffy *abuf = &rem->aud_buffy;
int fin = rem->fin;
acount = abuf->size-ring_rest(abuf);
vcount = vbuf->size-ring_rest(vbuf);
while ( acount > MAX_PLENGTH && vcount > MAX_PLENGTH && count < 10){
int neof;
count++;
init_pes(&pes);
if ((neof = read_pes(fin,&pes)) <= 0) return -1;
switch(pes.stream_id){
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
rem->apes++;
if( rem->audio_info.layer < 0 &&
(pes.flags2 & PTS_DTS) )
add_apts(rem, pes.pts);
find_aframes( rem, pes.pes_pckt_data, pes.length);
ring_write(abuf,(char *)pes.pes_pckt_data,pes.length);
rem->awrite += pes.length;
break;
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
rem->vpes++;
if( !rem->video_info.framerate &&
(pes.flags2 & PTS_DTS) )
add_vpts(rem, pes.pts);
find_vframes( rem, pes.pes_pckt_data, pes.length);
ring_write(vbuf,(char *)pes.pes_pckt_data,pes.length);
rem->vwrite += pes.length;
break;
}
acount = abuf->size-ring_rest(abuf);
vcount = vbuf->size-ring_rest(vbuf);
kill_pes(&pes);
}
if (count < 10) return 0;
return 1;
}
int vring_read( Remux *rem, uint8_t *buf, int l)
{
int c = 0;
int r = 0;
if (ring_rest(&rem->vid_buffy) <= l)
r = refill_buffy(rem);
if (r) return -1;
c = ring_read(&rem->vid_buffy, (char *) buf, l);
rem->vread += c;
del_vpts(rem);
del_vframe(rem);
return c;
}
int aring_read( Remux *rem, uint8_t *buf, int l)
{
int c = 0;
int r = 0;
if (ring_rest(&rem->aud_buffy) <= l)
r = refill_buffy(rem);
if (r) return -1;
c = ring_read(&rem->aud_buffy, (char *)buf, l);
rem->aread += c;
del_apts(rem);
del_aframe(rem);
return c;
}
int vring_peek( Remux *rem, uint8_t *buf, int l, long off)
{
int c = 0;
if (ring_rest(&rem->vid_buffy) <= l)
refill_buffy(rem);
c = ring_peek(&rem->vid_buffy, (char *) buf, l, off);
return c;
}
int aring_peek( Remux *rem, uint8_t *buf, int l, long off)
{
int c = 0;
if (ring_rest(&rem->aud_buffy) <= l)
refill_buffy(rem);
c = ring_peek(&rem->aud_buffy, (char *)buf, l, off);
return c;
}
int get_video_info(Remux *rem)
{
uint8_t buf[12];
uint8_t *headr;
int found = 0;
int sw;
long off = 0;
int form = -1;
ringbuffy *vid_buffy = &rem->vid_buffy;
VideoInfo *vi = &rem->video_info;
while (found < 4 && ring_rest(vid_buffy)){
uint8_t b[3];
vring_peek( rem, b, 4, 0);
if ( b[0] == 0x00 && b[1] == 0x00 && b[2] == 0x01
&& b[3] == 0xb3) found = 4;
else {
off++;
vring_read( rem, b, 1);
}
}
rem->vframe = rem->vframen-1;
if (! found) return -1;
buf[0] = 0x00; buf[1] = 0x00; buf[2] = 0x01; buf[3] = 0xb3;
headr = buf+4;
if(vring_peek(rem, buf, 12, 0) < 12) return -1;
vi->horizontal_size = ((headr[1] &0xF0) >> 4) | (headr[0] << 4);
vi->vertical_size = ((headr[1] &0x0F) << 8) | (headr[2]);
sw = (int)((headr[3]&0xF0) >> 4) ;
switch( sw ){
case 1:
fprintf(stderr,"Videostream: ASPECT: 1:1");
vi->aspect_ratio = 100;
break;
case 2:
fprintf(stderr,"Videostream: ASPECT: 4:3");
vi->aspect_ratio = 133;
break;
case 3:
fprintf(stderr,"Videostream: ASPECT: 16:9");
vi->aspect_ratio = 177;
break;
case 4:
fprintf(stderr,"Videostream: ASPECT: 2.21:1");
vi->aspect_ratio = 221;
break;
case 5 ... 15:
fprintf(stderr,"Videostream: ASPECT: reserved");
vi->aspect_ratio = 0;
break;
default:
vi->aspect_ratio = 0;
return -1;
}
fprintf(stderr," Size = %dx%d",vi->horizontal_size,vi->vertical_size);
sw = (int)(headr[3]&0x0F);
switch ( sw ) {
case 1:
fprintf(stderr," FRate: 23.976 fps");
vi->framerate = 24000/1001.;
form = -1;
break;
case 2:
fprintf(stderr," FRate: 24 fps");
vi->framerate = 24;
form = -1;
break;
case 3:
fprintf(stderr," FRate: 25 fps");
vi->framerate = 25;
form = VIDEO_MODE_PAL;
break;
case 4:
fprintf(stderr," FRate: 29.97 fps");
vi->framerate = 30000/1001.;
form = VIDEO_MODE_NTSC;
break;
case 5:
fprintf(stderr," FRate: 30 fps");
vi->framerate = 30;
form = VIDEO_MODE_NTSC;
break;
case 6:
fprintf(stderr," FRate: 50 fps");
vi->framerate = 50;
form = VIDEO_MODE_PAL;
break;
case 7:
fprintf(stderr," FRate: 60 fps");
vi->framerate = 60;
form = VIDEO_MODE_NTSC;
break;
}
rem->dts_delay = (int)(7.0/vi->framerate/2.0*90000);
vi->bit_rate = 400*(((headr[4] << 10) & 0x0003FC00UL)
| ((headr[5] << 2) & 0x000003FCUL) |
(((headr[6] & 0xC0) >> 6) & 0x00000003UL));
fprintf(stderr," BRate: %.2f Mbit/s",(vi->bit_rate)/1000000.);
fprintf(stderr,"\n");
vi->video_format = form;
/*
marker_bit (&video_bs, 1);
vi->vbv_buffer_size = getbits (&video_bs, 10);
vi->CSPF = get1bit (&video_bs);
*/
return form;
}
int get_audio_info( Remux *rem)
{
uint8_t *headr;
uint8_t buf[3];
long off = 0;
int found = 0;
ringbuffy *aud_buffy = &rem->aud_buffy;
AudioInfo *ai = &rem->audio_info;
while(!ring_rest(aud_buffy) && !refill_buffy(rem));
while (found < 2 && ring_rest(aud_buffy)){
uint8_t b[2];
refill_buffy(rem);
aring_peek( rem, b, 2, 0);
if ( b[0] == 0xff && (b[1] & 0xf8) == 0xf8)
found = 2;
else {
off++;
aring_read( rem, b, 1);
}
}
if (!found) return -1;
rem->aframe = rem->aframen-1;
if (aring_peek(rem, buf, 3, 0) < 1) return -1;
headr = buf+2;
ai->layer = (buf[1] & 0x06) >> 1;
fprintf(stderr,"Audiostream: Layer: %d", 4-ai->layer);
ai->bit_rate = bitrates[(3-ai->layer)][(headr[0] >> 4 )]*1000;
if (ai->bit_rate == 0)
fprintf (stderr," Bit rate: free");
else if (ai->bit_rate == 0xf)
fprintf (stderr," BRate: reserved");
else
fprintf (stderr," BRate: %d kb/s", ai->bit_rate/1000);
ai->frequency = (headr[0] & 0x0c ) >> 2;
if (ai->frequency == 3)
fprintf (stderr, " Freq: reserved\n");
else
fprintf (stderr," Freq: %2.1f kHz\n",
freq[ai->frequency]/10.);
return 0;
}
void init_remux(Remux *rem, int fin, int fout, int mult)
{
rem->video_info.framerate = 0;
rem->audio_info.layer = -1;
rem->fin = fin;
rem->fout = fout;
ring_init(&rem->vid_buffy, 40*BUFFYSIZE*mult);
ring_init(&rem->aud_buffy, BUFFYSIZE*mult);
init_ptsl(rem->vpts_list);
init_ptsl(rem->apts_list);
init_framel(rem->vframe_list);
init_framel(rem->aframe_list);
rem->vptsn = 0;
rem->aptsn = 0;
rem->vframen = 0;
rem->aframen = 0;
rem->vframe = 0;
rem->aframe = 0;
rem->vcframe = 0;
rem->acframe = 0;
rem->vpts = 0;
rem->vdts = 0;
rem->apts_off = 0;
rem->vpts_off = 0;
rem->apts_delay= 0;
rem->vpts_delay= 0;
rem->dts_delay = 0;
rem->apts = 0;
rem->vpes = 0;
rem->apes = 0;
rem->vpts_old = 0;
rem->apts_old = 0;
rem->SCR = 0;
rem->vwrite = 0;
rem->awrite = 0;
rem->vread = 0;
rem->aread = 0;
rem->group = 0;
rem->groupframe= 0;
rem->pack_size = 0;
rem->muxr = 0;
rem->time_off = 0;
}
uint32_t bytes2pts(int bytes, int rate)
{
if (bytes < 0xFFFFFFFFUL/720000UL)
return (uint32_t)(bytes*720000UL/rate);
else
return (uint32_t)(bytes/rate*720000UL);
}
long pts2bytes( uint32_t pts, int rate)
{
if (pts < 0xEFFFFFFFUL/rate)
return (pts*rate/720000);
else
return (pts* (rate/720000));
}
int write_audio_pes( Remux *rem, uint8_t *buf, int *alength)
{
int add;
int pos = 0;
int p = 0;
uint32_t pts = 0;
int stuff = 0;
int length = *alength;
if (!length) return 0;
p = PS_HEADER_L1+PES_H_MIN;
if (rem->apts_old != rem->apts){
pts = (uint32_t)((uint64_t)rem->apts + rem->apts_delay - rem->apts_off);
p += 5;
}
if ( length+p >= rem->pack_size){
length = rem->pack_size;
} else {
if (rem->pack_size-length-p <= PES_MIN){
stuff = rem->pack_size - length;
length = rem->pack_size;
} else
length = length+p;
}
pos = write_ps_header(buf,rem->SCR,rem->muxr, 1, 0, 0, 1, 1, 1,
0, 0, 0, 0, 0, 0);
pos += write_pes_header( 0xC0, length-pos, pts, buf+pos, stuff);
add = aring_read( rem, buf+pos, length-pos);
*alength = add;
if (add < 0) return -1;
pos += add;
rem->apts_old = rem->apts;
rem->apts = rem->apts_list[0].PTS;
if (pos+PES_MIN < rem->pack_size){
pos += write_pes_header( PADDING_STREAM, rem->pack_size-pos, 0,
buf+pos, 0);
pos = rem->pack_size;
}
if (pos != rem->pack_size) {
fprintf(stderr,"apos: %d\n",pos);
exit(1);
}
return pos;
}
int write_video_pes( Remux *rem, uint8_t *buf, int *vlength)
{
int add;
int pos = 0;
int p = 0;
uint32_t pts = 0;
uint32_t dts = 0;
int stuff = 0;
int length = *vlength;
long diff = 0;
if (! length) return 0;
p = PS_HEADER_L1+PES_H_MIN;
if (rem->vpts_old != rem->vpts){
pts = (uint32_t)((uint64_t)rem->vpts + rem->vpts_delay - rem->vpts_off);
p += 5;
}
if ( length+p >= rem->pack_size){
length = rem->pack_size;
} else {
if (rem->pack_size - length - p <= PES_MIN){
stuff = rem->pack_size - length;
length = rem->pack_size;
} else
length = length+p;
}
pos = write_ps_header(buf,rem->SCR,rem->muxr, 1, 0, 0, 1, 1, 1,
0, 0, 0, 0, 0, 0);
pos += write_pes_header( 0xE0, length-pos, pts, buf+pos, stuff);
add = vring_read( rem, buf+pos, length-pos);
*vlength = add;
if (add < 0) return -1;
pos += add;
rem->vpts_old = rem->vpts;
dts = rem->vdts;
rem->vpts = rem->vpts_list[0].PTS;
rem->vdts = rem->vpts_list[0].dts;
if ( diff > 0) rem->SCR += diff;
if (pos+PES_MIN < rem->pack_size){
// fprintf(stderr,"vstuffing: %d \n",rem->pack_size-pos);
pos += write_pes_header( PADDING_STREAM, rem->pack_size-pos, 0,
buf+pos, 0);
pos = rem->pack_size;
}
return pos;
}
void print_info( Remux *rem , int ret)
{
int newtime = 0;
static int time = 0;
int i = 0;
while(! newtime && i < rem->vframen) {
if( (newtime = rem->vframe_list[i].time)) break;
i++;
}
if (newtime) time = newtime;
fprintf(stderr,"SCR:");
printpts(rem->SCR);
fprintf(stderr," VDTS:");
printpts((uint32_t)((uint64_t)rem->vdts - rem->vpts_off + rem->vpts_delay));
fprintf(stderr," APTS:");
printpts((uint32_t)((uint64_t)rem->apts - rem->apts_off + rem->apts_delay));
fprintf(stderr," TIME:%2d:", time/3600);
fprintf(stderr,"%02d:", (time%3600)/60);
fprintf(stderr,"%02d", (time%3600)%60);
if (ret) fprintf(stderr,"\n");
else fprintf(stderr,"\r");
}
void remux(int fin, int fout, int pack_size, int mult)
{
Remux rem;
long ptsdiff;
uint8_t buf[MAX_PACK_L];
long pos = 0;
int r = 0;
int i, r1, r2;
long packets = 0;
uint8_t mpeg_end[4] = { 0x00, 0x00, 0x01, 0xB9 };
uint32_t SCR_inc = 0;
int data_size;
long vbuf, abuf;
long vbuf_max, abuf_max;
PTS_List abufl[MAX_PTS];
PTS_List vbufl[MAX_PTS];
int abufn = 0;
int vbufn = 0;
uint64_t pts_d = 0;
int ok_audio;
int ok_video;
uint32_t apos = 0;
uint32_t vpos = 0;
int vpack_size = 0;
int apack_size = 0;
init_ptsl(abufl);
init_ptsl(vbufl);
if (mult < 0 || mult >1000){
fprintf(stderr,"Multipler too large\n");
exit(1);
}
init_remux(&rem, fin, fout, mult);
rem.pack_size = pack_size;
data_size = pack_size - MAX_H_SIZE;
fprintf(stderr,"pack_size: %d header_size: %d data size: %d\n",
pack_size, MAX_H_SIZE, data_size);
refill_buffy(&rem);
fprintf(stderr,"Package size: %d\n",pack_size);
if ( get_video_info(&rem) < 0 ){
fprintf(stderr,"ERROR: Can't find valid video stream\n");
exit(1);
}
i = 0;
while(! rem.time_off && i < rem.vframen) {
if( (rem.time_off = rem.vframe_list[i].time)) break;
i++;
}
if ( get_audio_info(&rem) < 0 ){
fprintf(stderr,"ERROR: Can't find valid audio stream\n");
exit(1);
}
rem.vpts = rem.vpts_list[0].PTS;
rem.vdts = rem.vpts;
rem.vpts_off = rem.vpts;
fprintf(stderr,"Video start PTS = %fs \n",rem.vpts_off/90000.);
rem.apts = rem.apts_list[0].PTS;
rem.apts_off = rem.apts;
ptsdiff = rem.vpts - rem.apts;
if (ptsdiff > 0) rem.vpts_off -= ptsdiff;
else rem.apts_off -= -ptsdiff;
fprintf(stderr,"Audio start PTS = %fs\n",rem.apts_off/90000.);
fprintf(stderr,"Difference Video - Audio = %fs\n",ptsdiff/90000.);
fprintf(stderr,"Time offset = %ds\n",rem.time_off);
rem.muxr = (rem.video_info.bit_rate +
rem.audio_info.bit_rate)/400;
fprintf(stderr,"MUXRATE: %.2f Mb/sec\n",rem.muxr/2500.);
SCR_inc = 1800 * pack_size / rem.muxr;
r = 0;
while ( rem.vptsn < 2 && !r) r = refill_buffy(&rem);
r = 0;
while ( rem.aptsn < 2 && !r) r = refill_buffy(&rem);
//rem.vpts_delay = (uint32_t)(2*90000ULL* (uint64_t)pack_size/rem.muxr);
rem.vpts_delay = rem.dts_delay;
rem.apts_delay = rem.vpts_delay;
vbuf_max = 29440;
abuf_max = 4096;
vbuf = 0;
abuf = 0;
pos = write_ps_header(buf,rem.SCR,rem.muxr, 1, 0, 0, 1, 1, 1,
0xC0, 0, 32, 0xE0, 1, 230);
pos += write_pes_header( PADDING_STREAM, pack_size-pos, 0, buf+pos,0);
pos = rem.pack_size;
write( fout, buf, pos);
apos = rem.aread;
vpos = rem.vread;
print_info( &rem, 1 );
while( ring_rest(&rem.aud_buffy) && ring_rest(&rem.vid_buffy) ){
uint32_t next_apts;
uint32_t next_vdts;
int asize, vsize;
r1 = 0;
r2 = 0;
while ( rem.aframen < 2 && !r1)
r1 = refill_buffy(&rem);
while ( rem.vframen < 2 && !r2)
r2 = refill_buffy(&rem);
if (r1 && r2) break;
if ( !r1 && apos <= rem.aread)
apos = rem.aframe_list[1].pos;
if ( !r2 && vpos <= rem.vread)
vpos = rem.vframe_list[1].pos;
apack_size = apos - rem.aread;
vpack_size = vpos - rem.vread;
next_vdts = (uint32_t)((uint64_t)rem.vdts + rem.vpts_delay
- rem.vpts_off) ;
ok_video = ( rem.SCR < next_vdts);
next_apts = (uint32_t)((uint64_t)rem.apts + rem.apts_delay
- rem.apts_off) ;
ok_audio = ( rem.SCR < next_apts);
asize = (apack_size > data_size ? data_size: apack_size);
vsize = (vpack_size > data_size ? data_size: vpack_size);
fprintf(stderr,"vframen: %d aframen: %d v_ok: %d a_ok: %d v_buf: %d a_buf: %d vpacks: %d apacks: %d\n",rem.vframen,rem.aframen, ok_video, ok_audio, (int)vbuf,(int)abuf,vsize, asize);
if( vbuf+vsize < vbuf_max && vsize && ok_audio ){
fprintf(stderr,"1 ");
pos = write_video_pes( &rem, buf, &vpack_size);
write( fout, buf, pos);
vbuf += vpack_size;
vbufn = add_pts( vbufl, rem.vdts, vpack_size,
0, vbufn, 0);
packets++;
} else if ( abuf+asize < abuf_max && asize &&
ok_video ){
fprintf(stderr,"2 ");
pos = write_audio_pes( &rem, buf, &apack_size);
write( fout, buf, pos);
abuf += apack_size;
abufn = add_pts( abufl, rem.apts, apack_size,
0, abufn, 0);
packets++;
} else if ( abuf+asize < abuf_max && asize &&
!ok_audio){
fprintf(stderr,"3 ");
pos = write_audio_pes( &rem, buf, &apack_size);
write( fout, buf, pos);
abuf += apack_size;
abufn = add_pts( abufl, rem.apts, apack_size,
0, abufn, 0);
packets++;
} else if (vbuf+vsize < vbuf_max && vsize &&
!ok_video){
fprintf(stderr,"4 ");
pos = write_video_pes( &rem, buf, &vpack_size);
write( fout, buf, pos);
vbuf += vpack_size;
vbufn = add_pts( vbufl, rem.vdts, vpack_size,
0, vbufn, 0);
packets++;
} else {
fprintf(stderr,"5 ");
pos = write_ps_header(buf,rem.SCR,rem.muxr, 1, 0, 0,
1, 1, 1, 0, 0, 0, 0, 0, 0);
pos += write_pes_header( PADDING_STREAM, pack_size-pos,
0, buf+pos, 0);
write( fout, buf, pos);
}
//fprintf(stderr,"vbufn: %d abufn: %d ", vbufn,abufn);
//fprintf(stderr,"vbuf: %5d abuf: %4d\n", vbuf,abuf);
if (rem.SCR > rem.vdts+rem.vpts_off -rem.vpts_delay)
rem.SCR = rem.vdts-rem.vpts_off;
rem.SCR = (uint32_t)((uint64_t) rem.SCR + SCR_inc);
if ( rem.apts_off + rem.SCR < rem.apts_delay ) pts_d = 0;
else pts_d = (uint64_t) rem.SCR + rem.apts_off - rem.apts_delay;
abuf -= del_ptss( abufl, (uint32_t) pts_d, &abufn);
if ( rem.vpts_off + rem.SCR < rem.vpts_delay ) pts_d = 0;
else pts_d = (uint64_t) rem.SCR + rem.vpts_off - rem.vpts_delay;
vbuf -= del_ptss( vbufl, (uint32_t) pts_d, &vbufn);
print_info( &rem, 1);
//fprintf(stderr,"vbufn: %d abufn: %d ", vbufn,abufn);
//fprintf(stderr,"vbuf: %5d abuf: %4d\n\n", vbuf,abuf);
}
pos = write_ps_header(buf,rem.SCR,rem.muxr, 1, 0, 0, 1, 1, 1,
0, 0, 0, 0, 0, 0);
pos += write_pes_header( PADDING_STREAM, pack_size-pos-4, 0,
buf+pos, 0);
pos = rem.pack_size-4;
write( fout, buf, pos);
write( fout, mpeg_end, 4);
fprintf(stderr,"\ndone\n");
}
typedef
struct pes_buffer_s{
ringbuffy pes_buffy;
uint8_t type;
PTS_List pts_list[MAX_PTS];
FRAME_List frame_list[MAX_FRAME];
int pes_size;
uint64_t written;
uint64_t read;
} PESBuffer;
void init_PESBuffer(PESBuffer *pbuf, int pes_size, int buf_size, uint8_t type)
{
init_framel( pbuf->frame_list);
init_ptsl( pbuf->pts_list);
ring_init( &pbuf->pes_buffy, buf_size);
pbuf->pes_size = pes_size;
pbuf->type = type;
pbuf->written = 0;
pbuf->read = 0;
}
#define MAX_PBUF 4
typedef
struct remux_s{
PESBuffer pbuf_list[MAX_PBUF];
int num_pbuf;
} REMUX;
void init_REMUX(REMUX *rem)
{
rem->num_pbuf = 0;
}
#define REPACK 2048
#define ABUF_SIZE REPACK*1024
#define VBUF_SIZE REPACK*10240
void remux_main(uint8_t *buf, int count, void *pr)
{
int i, b;
int bufsize = 0;
p2p *p = (p2p *) pr;
PESBuffer *pbuf;
REMUX *rem = (REMUX *) p->data;
uint8_t type = buf[3];
int *npbuf = &(rem->num_pbuf);
switch ( type ){
case PRIVATE_STREAM1:
bufsize = ABUF_SIZE;
case VIDEO_STREAM_S ... VIDEO_STREAM_E:
if (!bufsize) bufsize = VBUF_SIZE;
case AUDIO_STREAM_S ... AUDIO_STREAM_E:
if (!bufsize) bufsize = ABUF_SIZE;
b = -1;
for ( i = 0; i < *npbuf; i++){
if ( type == rem->pbuf_list[i].type ){
b = i;
break;
}
}
if (b < 0){
if ( *npbuf < MAX_PBUF ){
init_PESBuffer(&rem->pbuf_list[*npbuf],
p->repack+6, bufsize, type);
b = *npbuf;
(*npbuf)++;
} else {
fprintf(stderr,"Not enough PES buffers\n");
exit(1);
}
}
break;
default:
return;
}
pbuf = &(rem->pbuf_list[b]);
if (ring_write(&(pbuf->pes_buffy),(char *)buf,count) != count){
fprintf(stderr,"buffer overflow type 0x%2x\n",type);
exit(1);
} else {
pbuf->written += count;
if ((p->flag2 & PTS_DTS_FLAGS)){
uint32_t PTS = trans_pts_dts(p->pts);
add_pts(pbuf->pts_list, PTS, pbuf->written,
pbuf->written, 0, 0);
}
p->flag2 = 0;
}
}
void output_mux(p2p *p)
{
int i, filling;
PESBuffer *pbuf;
ringbuffy *pes_buffy;
REMUX *rem = (REMUX *) p->data;
int repack = p->repack;
int npbuf = rem->num_pbuf;
for ( i = 0; i < npbuf; i++){
pbuf = &(rem->pbuf_list[i]);
pes_buffy = &pbuf->pes_buffy;
filling = pes_buffy->size - ring_rest(pes_buffy);
if (filling/(2 *repack)){
pbuf->read += ring_read_file(pes_buffy, p->fd1,
(filling/repack)*repack);
}
}
}
#define SIZE 32768
void remux2(int fdin, int fdout)
{
p2p p;
int count = 1;
uint8_t buf[SIZE];
uint64_t length = 0;
uint64_t l = 0;
int verb = 0;
REMUX rem;
init_p2p(&p, remux_main, REPACK);
p.fd1 = fdout;
p.data = (void *) &rem;
if (fdin != STDIN_FILENO) verb = 1;
if (verb) {
length = lseek(fdin, 0, SEEK_END);
lseek(fdin,0,SEEK_SET);
}
while (count > 0){
count = read(fdin,buf,SIZE);
l += count;
if (verb)
fprintf(stderr,"Writing %2.2f %%\r",
100.*l/length);
get_pes(buf,count,&p,pes_repack);
output_mux(&p);
}
}
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