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simplified mpeg packetizer used by hw mpeg decoders/vo - first round

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@19153 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nicodvb 2006-07-22 09:45:34 +00:00
parent 4cbc615ca4
commit fdcee83d90
4 changed files with 58 additions and 143 deletions
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142
libmpdemux/mpeg_packetizer.c
View File

@ -33,87 +33,26 @@
static unsigned char pes_header[PES_MAX_SIZE];
static unsigned char ps_header[] = {
static unsigned char ps2_header[] = {
0x00, 0x00, 0x01, 0xba, 0x44, 0x00, 0x04, 0x00,
0x04, 0x01, 0x01, 0x86, 0xa3, 0xf8
};
/* Send MPEG 1 PES packet */
int
send_mpeg1_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
int my_write (unsigned char *data, int len))
{
int ptslen = pts ? 5 : 1;
int n = 0;
mp_msg (MSGT_HEADER, MSGL_DBG2,
"MPEG1 PES packet: 0x%x => %lu \n", id, pts);
memset (pes_header, '\0', PES_MAX_SIZE);
/* startcode */
pes_header[0] = 0;
pes_header[1] = 0;
pes_header[2] = id >> 8;
pes_header[3] = id & 255;
while (len > 0)
{
int payload_size = len; /* data + PTS */
if (6 + ptslen + payload_size > PES_MAX_SIZE)
payload_size = PES_MAX_SIZE - (6 + ptslen);
/* construct PES header: packetsize */
pes_header[4] = (ptslen + payload_size) >> 8;
pes_header[5] = (ptslen + payload_size) & 255;
if (ptslen == 5)
{
int x;
/* presentation time stamp */
x = (0x02 << 4) | (((pts >> 30) & 0x07) << 1) | 1;
pes_header[6] = x;
x = ((((pts >> 15) & 0x7fff) << 1) | 1);
pes_header[7] = x >> 8;
pes_header[8] = x & 255;
x = (((pts & 0x7fff) << 1) | 1);
pes_header[9] = x >> 8;
pes_header[10] = x & 255;
}
else
{
/* stuffing and header bits */
pes_header[6] = 0x0f;
}
memcpy (&pes_header[6 + ptslen], data, payload_size);
n += my_write (pes_header, 6 + ptslen + payload_size);
len -= payload_size;
data += payload_size;
ptslen = 1; /* store PTS only once, at first packet! */
}
return n;
}
/* Send MPEG 1 PS packet */
int
send_mpeg1_ps_packet (unsigned char *data, int len, int id, uint64_t pts,
int my_write (unsigned char *data, int len))
{
my_write (ps_header, sizeof (ps_header));
return send_mpeg1_pes_packet (data, len, id, pts, my_write);
}
static unsigned char ps1_header[] = {
0x00, 0x00, 0x01, 0xba, 0x21, 0x00,
0xb9, 0x37, 0x83, 0x80, 0xc3, 0x51,
};
/* Send MPEG 2 PES packet */
int
send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts, int type,
int my_write (unsigned char *data, int len))
{
int ptslen = 5;
int n = 0;
int idx, plen;
int hdr;
mp_msg (MSGT_HEADER, MSGL_DBG2,
"MPEG2 PES packet: 0x%x => %lu \n", id, pts);
@ -128,43 +67,59 @@ send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
while (len > 0)
{
int payload_size = len; /* data + PTS */
if (9 + ptslen + payload_size > PES_MAX_SIZE)
payload_size = PES_MAX_SIZE - (6 + ptslen);
if(type == 2)
hdr = 3;
else
hdr = (ptslen ? 0 : 1);
if (6 + hdr + ptslen + payload_size > PES_MAX_SIZE)
payload_size = PES_MAX_SIZE - 6 - hdr - ptslen;
/* construct PES header: packetize */
pes_header[4] = (3 + ptslen + payload_size) >> 8;
pes_header[5] = (3 + ptslen + payload_size) & 255;
pes_header[6] = 0x81;
plen = payload_size + hdr + ptslen;
pes_header[4] = plen >> 8;
pes_header[5] = plen & 255;
idx = 6;
if (ptslen)
{
int x;
pes_header[7] = 0x80;
pes_header[8] = ptslen;
if(type == 2)
{
pes_header[idx++] = 0x81;
pes_header[idx++] = 0x80;
pes_header[idx++] = ptslen;
}
/* presentation time stamp */
x = (0x02 << 4) | (((pts >> 30) & 0x07) << 1) | 1;
pes_header[9] = x;
pes_header[idx++] = x;
x = ((((pts >> 15) & 0x7fff) << 1) | 1);
pes_header[10] = x >>8;
pes_header[11] = x & 255;
pes_header[idx++] = x >>8;
pes_header[idx++] = x & 255;
x = (((pts & 0x7fff) << 1) | 1);
pes_header[12] = x >> 8;
pes_header[13] = x & 255;
pes_header[idx++] = x >> 8;
pes_header[idx++] = x & 255;
}
else
{
pes_header[7] = 0x00;
pes_header[8] = 0x00;
if(type == 2)
{
pes_header[idx++] = 0x81;
pes_header[idx++] = 0x00;
pes_header[idx++] = 0x00;
}
else
pes_header[idx++] = 0x0f;
}
my_write (pes_header, idx);
n = my_write (data, payload_size);
my_write (pes_header, 9 + ptslen);
n += my_write (data, payload_size);
len -= payload_size;
data += payload_size;
len -= n;
data += n;
ptslen = 0; /* store PTS only once, at first packet! */
}
@ -173,11 +128,14 @@ send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
/* Send MPEG 2 PS packet */
int
send_mpeg2_ps_packet (unsigned char *data, int len, int id, uint64_t pts,
send_mpeg_ps_packet (unsigned char *data, int len, int id, uint64_t pts, int type,
int my_write (unsigned char *data, int len))
{
my_write (ps_header, sizeof (ps_header));
return send_mpeg2_pes_packet (data, len, id, pts, my_write);
if(type == 2)
my_write (ps2_header, sizeof (ps2_header));
else
my_write (ps1_header, sizeof (ps1_header));
return send_mpeg_pes_packet (data, len, id, pts, type, my_write);
}
/* Send MPEG LPCM packet */

15
libmpdemux/mpeg_packetizer.h
View File

@ -25,19 +25,12 @@
#ifndef _MPEG_PACKETIZER_H_
#define _MPEG_PACKETIZER_H_
/* Send MPEG 1 PES packet */
int send_mpeg1_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
/* Send MPEG 1/2 PES packet */
int send_mpeg_pes_packet (unsigned char *data, int len, int id, uint64_t pts, int type,
int my_write (unsigned char *data, int len));
/* Send MPEG 1 PS packet */
int send_mpeg1_ps_packet (unsigned char *data, int len, int id, uint64_t pts,
int my_write (unsigned char *data, int len));
/* Send MPEG 2 PES packet */
int send_mpeg2_pes_packet (unsigned char *data, int len, int id, uint64_t pts,
int my_write (unsigned char *data, int len));
/* Send MPEG 2 PS packet */
int send_mpeg2_ps_packet (unsigned char *data, int len, int id, uint64_t pts,
/* Send MPEG 1/2 PS packet */
int send_mpeg_ps_packet (unsigned char *data, int len, int id, uint64_t pts, int type,
int my_write (unsigned char *data, int len));
/* Send MPEG LPCM packet */

4
libvo/vo_ivtv.c
View File

@ -236,8 +236,8 @@ flip_page (void)
if (!pes)
return;
send_mpeg2_pes_packet (pes->data, pes->size, pes->id,
pes->timestamp ? pes->timestamp : vo_pts,
send_mpeg_pes_packet (pes->data, pes->size, pes->id,
pes->timestamp ? pes->timestamp : vo_pts, 2,
ivtv_write);
/* ensure flip_page() won't be called twice */

40
libvo/vo_mpegpes.c
View File

@ -62,6 +62,7 @@
#include "config.h"
#include "video_out.h"
#include "video_out_internal.h"
#include "libmpdemux/mpeg_packetizer.h"
int vo_mpegpes_fd=-1;
int vo_mpegpes_fd2=-1;
@ -226,44 +227,7 @@ static void my_write(unsigned char* data,int len){
static unsigned char pes_header[PES_MAX_SIZE];
void send_pes_packet(unsigned char* data,int len,int id,int timestamp){
int ptslen=timestamp?5:1;
// startcode:
pes_header[0]=pes_header[1]=0;
pes_header[2]=id>>8; pes_header[3]=id&255;
while(len>0){
int payload_size=len; // data + PTS
if(6+ptslen+payload_size>PES_MAX_SIZE) payload_size=PES_MAX_SIZE-(6+ptslen);
// construct PES header: (code from ffmpeg's libav)
// packetsize:
pes_header[4]=(ptslen+payload_size)>>8;
pes_header[5]=(ptslen+payload_size)&255;
if(ptslen==5){
int x;
// presentation time stamp:
x=(0x02 << 4) | (((timestamp >> 30) & 0x07) << 1) | 1;
pes_header[6]=x;
x=((((timestamp >> 15) & 0x7fff) << 1) | 1);
pes_header[7]=x>>8; pes_header[8]=x&255;
x=((((timestamp) & 0x7fff) << 1) | 1);
pes_header[9]=x>>8; pes_header[10]=x&255;
} else {
// stuffing and header bits:
pes_header[6]=0x0f;
}
memcpy(&pes_header[6+ptslen],data,payload_size);
my_write(pes_header,6+ptslen+payload_size);
len-=payload_size; data+=payload_size;
ptslen=1; // store PTS only once, at first packet!
}
// printf("PES: draw frame! pts=%d size=%d \n",timestamp,len);
send_mpeg_pes_packet (data, len, id, timestamp, 1, my_write);
}
void send_lpcm_packet(unsigned char* data,int len,int id,unsigned int timestamp,int freq_id){