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https://github.com/tuxbox-neutrino/neutrino.git
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driver/genpsi.cpp: replace old code with class
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[CST] Focus
@@ -1,10 +1,6 @@
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/*
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$Id: genpsi.c,v 1.2 2006/01/16 12:45:54 sat_man Exp $
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Copyright (c) 2004 gmo18t, Germany. All rights reserved.
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aktuelle Versionen gibt es hier:
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$Source: /cvs/tuxbox/apps/tuxbox/neutrino/src/driver/genpsi.c,v $
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Copyright (C) 2012 CoolStream International Ltd
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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@@ -22,7 +18,7 @@ $Id: genpsi.c,v 1.2 2006/01/16 12:45:54 sat_man Exp $
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Mit diesem Programm koennen Neutrino TS Streams für das Abspielen unter Enigma gepatched werden
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*/
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//#include <mpegtools/transform.h>
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#include <string.h>
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#include <unistd.h>
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#include <driver/genpsi.h>
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@@ -40,17 +36,6 @@ $Id: genpsi.c,v 1.2 2006/01/16 12:45:54 sat_man Exp $
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#define ES_TYPE_MPA 0x03
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#define ES_TYPE_AC3 0x81
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typedef struct
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{
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short nba;
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uint16_t vpid;
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uint8_t vtype;
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uint16_t apid[10];
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short isAC3[10];
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} T_AV_PIDS;
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T_AV_PIDS avPids;
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static const uint32_t crc_table[256] = {
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0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
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0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
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@@ -97,49 +82,6 @@ static const uint32_t crc_table[256] = {
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0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
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};
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uint32_t calc_crc32psi(uint8_t *dst, const uint8_t *src, uint32_t len)
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{
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uint32_t i;
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uint32_t crc = 0xffffffff;
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for (i=0; i<len; i++)
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crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *src++) & 0xff];
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if (dst)
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{
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dst[0] = (crc >> 24) & 0xff;
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dst[1] = (crc >> 16) & 0xff;
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dst[2] = (crc >> 8) & 0xff;
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dst[3] = (crc) & 0xff;
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}
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return crc;
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}
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void transfer_pids(uint16_t pid,uint16_t pidart,short isAC3)
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{
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switch(pidart)
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{
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case EN_TYPE_VIDEO:
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avPids.vpid=pid;
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avPids.vtype = ES_TYPE_MPEG12;
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break;
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case EN_TYPE_AVC:
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avPids.vpid=pid;
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avPids.vtype = ES_TYPE_AVC;
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break;
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case EN_TYPE_AUDIO:
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avPids.apid[avPids.nba]=pid;
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avPids.isAC3[avPids.nba]=isAC3;
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avPids.nba++;
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break;
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case EN_TYPE_TELTEX:
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break;
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default:
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break;
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}
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}
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//-- special enigma stream description packet for --
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//-- at least 1 video, 1 audo and 1 PCR-Pid stream --
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//------------------------------------------------------------------------------------
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@@ -177,13 +119,65 @@ static uint8_t pkt_pmt[] =
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0x03, 0xE0, 0x00, 0xF0, 0x00 // (audio stream 1)
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};
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CGenPsi::CGenPsi()
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{
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nba = 0;
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vpid = 0;
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vtype = 0;
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memset(apid, 0, sizeof(apid));
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memset(atypes, 0, sizeof(atypes));
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}
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uint32_t CGenPsi::calc_crc32psi(uint8_t *dst, const uint8_t *src, uint32_t len)
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{
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uint32_t i;
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uint32_t crc = 0xffffffff;
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for (i=0; i<len; i++)
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crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *src++) & 0xff];
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if (dst)
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{
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dst[0] = (crc >> 24) & 0xff;
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dst[1] = (crc >> 16) & 0xff;
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dst[2] = (crc >> 8) & 0xff;
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dst[3] = (crc) & 0xff;
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}
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return crc;
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}
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void CGenPsi::addPid(uint16_t pid, uint16_t pidtype, short isAC3)
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{
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switch(pidtype)
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{
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case EN_TYPE_VIDEO:
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vpid=pid;
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vtype = ES_TYPE_MPEG12;
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break;
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case EN_TYPE_AVC:
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vpid=pid;
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vtype = ES_TYPE_AVC;
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break;
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case EN_TYPE_AUDIO:
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apid[nba]=pid;
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atypes[nba]=isAC3;
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nba++;
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break;
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case EN_TYPE_TELTEX:
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break;
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default:
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break;
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}
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}
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//== setup a new TS packet with format ==
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//== predefined with a template ==
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//=======================================
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#define COPY_TEMPLATE(dst, src) copy_template(dst, src, sizeof(src))
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static int copy_template(uint8_t *dst, uint8_t *src, int len)
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int CGenPsi::copy_template(uint8_t *dst, uint8_t *src, int len)
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{
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//-- reset buffer --
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memset(dst, 0xFF, SIZE_TS_PKT);
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@@ -192,92 +186,93 @@ static int copy_template(uint8_t *dst, uint8_t *src, int len)
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return len;
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}
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int genpsi(int fd2)
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int CGenPsi::genpsi(int fd)
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{
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// int bytes = 0;
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uint8_t pkt[SIZE_TS_PKT];
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int i, data_len, patch_len, ofs;
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//-- copy "Enigma"-template --
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//-- copy "Enigma"-template --
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data_len = COPY_TEMPLATE(pkt, pkt_enigma);
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//-- adjust len dependent to number of audio streams --
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data_len += ((SIZE_ENIGMA_TAB_ROW+1) * (avPids.nba-1));
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//-- adjust len dependent to number of audio streams --
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data_len += ((SIZE_ENIGMA_TAB_ROW+1) * (nba-1));
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patch_len = data_len - OFS_HDR_2 + 1;
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pkt[OFS_HDR_2+1] |= (patch_len>>8);
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pkt[OFS_HDR_2+2] = (patch_len & 0xFF);
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//-- write row with desc. for video stream --
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//-- write row with desc. for video stream --
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ofs = OFS_ENIGMA_TAB;
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pkt[ofs] = EN_TYPE_VIDEO;
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pkt[ofs+1] = 0x02;
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pkt[ofs+2] = (avPids.vpid>>8);
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pkt[ofs+3] = (avPids.vpid & 0xFF);
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//-- for each audio stream, write row with desc. --
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pkt[ofs+2] = (vpid>>8);
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pkt[ofs+3] = (vpid & 0xFF);
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//-- for each audio stream, write row with desc. --
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ofs += SIZE_ENIGMA_TAB_ROW;
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for (i=0; i<avPids.nba; i++)
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for (i=0; i<nba; i++)
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{
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pkt[ofs] = EN_TYPE_AUDIO;
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pkt[ofs+1] = 0x03;
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pkt[ofs+2] = (avPids.apid[i]>>8);
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pkt[ofs+3] = (avPids.apid[i] & 0xFF);
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pkt[ofs+4] = (avPids.isAC3[i]==1)? 0x01 : 0x00;
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pkt[ofs+2] = (apid[i]>>8);
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pkt[ofs+3] = (apid[i] & 0xFF);
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pkt[ofs+4] = (atypes[i]==1)? 0x01 : 0x00;
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ofs += (SIZE_ENIGMA_TAB_ROW + 1);
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}
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//-- write row with desc. for pcr stream (eq. video) --
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//-- write row with desc. for pcr stream (eq. video) --
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pkt[ofs] = EN_TYPE_PCR;
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pkt[ofs+1] = 0x02;
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pkt[ofs+2] = (avPids.vpid>>8);
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pkt[ofs+3] = (avPids.vpid & 0xFF);
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pkt[ofs+2] = (vpid>>8);
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pkt[ofs+3] = (vpid & 0xFF);
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//-- calculate CRC --
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//-- calculate CRC --
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calc_crc32psi(&pkt[data_len], &pkt[OFS_HDR_2], data_len-OFS_HDR_2 );
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//-- write TS packet --
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/*bytes +=*/ write(fd2, pkt, SIZE_TS_PKT);
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//-- (II) build PAT --
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//-- write TS packet --
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write(fd, pkt, SIZE_TS_PKT);
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//-- (II) build PAT --
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data_len = COPY_TEMPLATE(pkt, pkt_pat);
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//-- calculate CRC --
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//-- calculate CRC --
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calc_crc32psi(&pkt[data_len], &pkt[OFS_HDR_2], data_len-OFS_HDR_2 );
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//-- write TS packet --
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/*bytes +=*/ write(fd2, pkt, SIZE_TS_PKT);
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//-- write TS packet --
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write(fd, pkt, SIZE_TS_PKT);
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//-- (III) build PMT --
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//-- (III) build PMT --
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data_len = COPY_TEMPLATE(pkt, pkt_pmt);
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//-- adjust len dependent to count of audio streams --
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data_len += (SIZE_STREAM_TAB_ROW * (avPids.nba-1));
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//-- adjust len dependent to count of audio streams --
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data_len += (SIZE_STREAM_TAB_ROW * (nba-1));
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patch_len = data_len - OFS_HDR_2 + 1;
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pkt[OFS_HDR_2+1] |= (patch_len>>8);
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pkt[OFS_HDR_2+2] = (patch_len & 0xFF);
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//-- patch pcr PID --
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//-- patch pcr PID --
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ofs = OFS_PMT_DATA;
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pkt[ofs] |= (avPids.vpid>>8);
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pkt[ofs+1] = (avPids.vpid & 0xFF);
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//-- write row with desc. for ES video stream --
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pkt[ofs] |= (vpid>>8);
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pkt[ofs+1] = (vpid & 0xFF);
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//-- write row with desc. for ES video stream --
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ofs = OFS_STREAM_TAB;
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pkt[ofs] = avPids.vtype;
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pkt[ofs+1] = 0xE0 | (avPids.vpid>>8);
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pkt[ofs+2] = (avPids.vpid & 0xFF);
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pkt[ofs] = vtype;
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pkt[ofs+1] = 0xE0 | (vpid>>8);
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pkt[ofs+2] = (vpid & 0xFF);
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pkt[ofs+3] = 0xF0;
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pkt[ofs+4] = 0x00;
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//-- for each ES audio stream, write row with desc. --
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for (i=0; i<avPids.nba; i++)
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//-- for each ES audio stream, write row with desc. --
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for (i=0; i<nba; i++)
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{
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ofs += SIZE_STREAM_TAB_ROW;
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pkt[ofs] = (avPids.isAC3[i]==1)? ES_TYPE_AC3 : ES_TYPE_MPA;
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pkt[ofs+1] = 0xE0 | (avPids.apid[i]>>8);
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pkt[ofs+2] = (avPids.apid[i] & 0xFF);
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pkt[ofs] = (atypes[i]==1)? ES_TYPE_AC3 : ES_TYPE_MPA;
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pkt[ofs+1] = 0xE0 | (apid[i]>>8);
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pkt[ofs+2] = (apid[i] & 0xFF);
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pkt[ofs+3] = 0xF0;
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pkt[ofs+4] = 0x00;
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}
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//-- calculate CRC --
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//-- calculate CRC --
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calc_crc32psi(&pkt[data_len], &pkt[OFS_HDR_2], data_len-OFS_HDR_2 );
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//-- write TS packet --
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/*bytes +=*/ write(fd2, pkt, SIZE_TS_PKT);
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//-- finish --
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avPids.vpid=0;
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avPids.nba=0;
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fdatasync(fd2);
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//-- write TS packet --
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write(fd, pkt, SIZE_TS_PKT);
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//-- finish --
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vpid=0;
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nba=0;
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fdatasync(fd);
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return 1;
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}
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@@ -1,10 +1,7 @@
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/*
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$Id: genpsi.h,v 1.1 2005/08/15 14:47:52 metallica Exp $
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Copyright (c) 2004 gmo18t, Germany. All rights reserved.
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aktuelle Versionen gibt es hier:
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$Source: /cvs/tuxbox/apps/tuxbox/neutrino/src/driver/genpsi.h,v $
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Copyright (C) 2012 CoolStream International Ltd
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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@@ -26,13 +23,26 @@ $Id: genpsi.h,v 1.1 2005/08/15 14:47:52 metallica Exp $
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#define __genpsi_h__
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#include <inttypes.h>
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int genpsi(int fd2);
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void transfer_pids(uint16_t pid,uint16_t pidart,short isAC3);
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#define EN_TYPE_VIDEO 0x00
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#define EN_TYPE_AUDIO 0x01
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#define EN_TYPE_TELTEX 0x02
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#define EN_TYPE_PCR 0x03
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#define EN_TYPE_AVC 0x04
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class CGenPsi
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{
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private:
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short nba;
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uint16_t vpid;
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uint8_t vtype;
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uint16_t apid[10];
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short atypes[10];
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static int copy_template(uint8_t *dst, uint8_t *src, int len);
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uint32_t calc_crc32psi(uint8_t *dst, const uint8_t *src, uint32_t len);
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public:
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CGenPsi();
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void addPid(uint16_t pid,uint16_t pidtype, short isAC3);
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int genpsi(int fd);
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};
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#endif
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