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-add record option for teletext & dvbsub pids

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This commit is contained in:
Jacek Jendrzej
2013-03-19 17:14:04 +01:00
committed by [CST] Focus
parent cca6d898c8
commit b2241df43d
13 changed files with 181 additions and 23 deletions
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82
src/driver/genpsi.cpp
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@@ -1,6 +1,7 @@
/*
Copyright (c) 2004 gmo18t, Germany. All rights reserved.
Copyright (C) 2012 CoolStream International Ltd
Copyright (C) 2013 Jacek Jendrzej
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
@@ -124,8 +125,15 @@ CGenPsi::CGenPsi()
nba = 0;
vpid = 0;
vtype = 0;
vtxtpid = 0;
vtxtlang[0] = 'g';
vtxtlang[1] = 'e';
vtxtlang[2] = 'r';
memset(apid, 0, sizeof(apid));
memset(atypes, 0, sizeof(atypes));
nsub = 0;
memset(dvbsubpid, 0, sizeof(dvbsubpid));
}
uint32_t CGenPsi::calc_crc32psi(uint8_t *dst, const uint8_t *src, uint32_t len)
@@ -147,7 +155,7 @@ uint32_t CGenPsi::calc_crc32psi(uint8_t *dst, const uint8_t *src, uint32_t len)
return crc;
}
void CGenPsi::addPid(uint16_t pid, uint16_t pidtype, short isAC3)
void CGenPsi::addPid(uint16_t pid, uint16_t pidtype, short isAC3, const char *data)
{
switch(pidtype)
{
@@ -165,8 +173,22 @@ void CGenPsi::addPid(uint16_t pid, uint16_t pidtype, short isAC3)
nba++;
break;
case EN_TYPE_TELTEX:
vtxtpid = pid;
if(data != NULL){
vtxtlang[0] = data[0];
vtxtlang[1] = data[1];
vtxtlang[2] = data[2];
}
break;
case EN_TYPE_DVBSUB:
dvbsubpid[nsub] = pid;
if(data != NULL){
dvbsublang[nsub][0] = data[0];
dvbsublang[nsub][1] = data[1];
dvbsublang[nsub][2] = data[2];
}
nsub++;
break;
default:
break;
}
@@ -232,6 +254,8 @@ int CGenPsi::genpsi(int fd)
//-- (II) build PAT --
data_len = COPY_TEMPLATE(pkt, pkt_pat);
// pkt[0xf]= 0xE0 | (pmtpid>>8);
// pkt[0x10] = pmtpid & 0xFF;
//-- calculate CRC --
calc_crc32psi(&pkt[data_len], &pkt[OFS_HDR_2], data_len-OFS_HDR_2 );
//-- write TS packet --
@@ -241,6 +265,12 @@ int CGenPsi::genpsi(int fd)
data_len = COPY_TEMPLATE(pkt, pkt_pmt);
//-- adjust len dependent to count of audio streams --
data_len += (SIZE_STREAM_TAB_ROW * (nba-1));
if(vtxtpid){
data_len += (SIZE_STREAM_TAB_ROW * (1))+10;//add teletext row length
}
if(nsub){
data_len += ((SIZE_STREAM_TAB_ROW+10) * nsub);//add dvbsub row length
}
patch_len = data_len - OFS_HDR_2 + 1;
pkt[OFS_HDR_2+1] |= (patch_len>>8);
pkt[OFS_HDR_2+2] = (patch_len & 0xFF);
@@ -266,13 +296,61 @@ int CGenPsi::genpsi(int fd)
pkt[ofs+3] = 0xF0;
pkt[ofs+4] = 0x00;
}
//teletext
if(vtxtpid){
ofs += SIZE_STREAM_TAB_ROW;
pkt[ofs] = 0x06; //teletext stream type;
pkt[ofs+1] = 0xE0 | vtxtpid>>8;
pkt[ofs+2] = vtxtpid&0xff;
pkt[ofs+3] = 0xf0;
pkt[ofs+4] = 0x0A; // ES_info_length
pkt[ofs+5] = 0x52; //DVB-DescriptorTag: 82 (0x52) [= stream_identifier_descriptor]
pkt[ofs+6] = 0x01; // descriptor_length
pkt[ofs+7] = 0x03; //component_tag
pkt[ofs+8] = 0x56; // DVB teletext tag
pkt[ofs+9] = 0x05; // descriptor length
pkt[ofs+10] = vtxtlang[0]; //language code[0]
pkt[ofs+11] = vtxtlang[1]; //language code[1]
pkt[ofs+12] = vtxtlang[2]; //language code[2]
pkt[ofs+13] = (/*descriptor_magazine_number*/ 0x01 & 0x06) | ((/*descriptor_type*/ 0x01 << 3) & 0xF8);
pkt[ofs+14] = 0x00 ; //Teletext_page_number
}
//dvbsub
for (i=0; i<nsub; i++)
{
ofs += SIZE_STREAM_TAB_ROW;
if(i > 0 || vtxtpid)
ofs += 10;
pkt[ofs] = 0x06;//subtitle stream type;
pkt[ofs+1] = 0xE0 | dvbsubpid[i]>>8;
pkt[ofs+2] = dvbsubpid[i] & 0xFF;
pkt[ofs+3] = 0xF0;
pkt[ofs+4] = 0x0A; // es info length
pkt[ofs+5] = 0x59; // DVB sub tag
pkt[ofs+6] = 0x08; // descriptor length
pkt[ofs+7] = dvbsublang[i][0]; //language code[0]
pkt[ofs+8] = dvbsublang[i][1]; //language code[1]
pkt[ofs+9] = dvbsublang[i][2]; //language code[2]
pkt[ofs+10] = 0x20; //subtitle_stream.subtitling_type
pkt[ofs+11] = 0x01>>8; //composition_page_id
pkt[ofs+12] = 0x01&0xff; //composition_page_id
pkt[ofs+13] = 0x01>>8; //ancillary_page_id
pkt[ofs+14] = 0x01&0xff; //ancillary_page_id
}
//-- calculate CRC --
calc_crc32psi(&pkt[data_len], &pkt[OFS_HDR_2], data_len-OFS_HDR_2 );
//-- write TS packet --
write(fd, pkt, SIZE_TS_PKT);
//-- finish --
vpid=0;
nba=0;
nsub = 0;
vtxtpid = 0;
fdatasync(fd);
return 1;
}