639 lines
14 KiB
C
639 lines
14 KiB
C
/*
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* Multicasted IPTV Input
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* Copyright (C) 2007 Andreas Öman
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*
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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 by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libavutil/common.h>
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#include <libavutil/avstring.h>
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#include "tvhead.h"
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#include "psi.h"
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#include "transports.h"
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#include "dvb/dvb_support.h"
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#include "tsdemux.h"
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#include "parsers.h"
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int
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psi_section_reassemble(psi_section_t *ps, uint8_t *data, int len,
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int start, int chkcrc)
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{
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int remain, a, tsize;
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if(start)
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ps->ps_offset = 0;
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if(ps->ps_offset < 0)
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return -1;
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remain = PSI_SECTION_SIZE - ps->ps_offset;
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a = FFMAX(0, FFMIN(remain, len));
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memcpy(ps->ps_data + ps->ps_offset, data, a);
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ps->ps_offset += a;
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tsize = 3 + (((ps->ps_data[1] & 0xf) << 8) | ps->ps_data[2]);
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if(ps->ps_offset < tsize)
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return -1;
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if(chkcrc && psi_crc32(ps->ps_data, tsize))
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return -1;
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ps->ps_offset = tsize - (chkcrc ? 4 : 0);
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return 0;
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}
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/**
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* PAT parser, from ISO 13818-1
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*/
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int
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psi_parse_pat(th_transport_t *t, uint8_t *ptr, int len,
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pid_section_callback_t *pmt_callback)
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{
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uint16_t prognum;
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uint16_t pid;
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th_stream_t *st;
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lock_assert(&t->tht_stream_mutex);
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if(len < 5)
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return -1;
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ptr += 5;
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len -= 5;
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while(len >= 4) {
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prognum = ptr[0] << 8 | ptr[1];
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pid = (ptr[2] & 0x1f) << 8 | ptr[3];
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if(prognum != 0) {
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st = transport_add_stream(t, pid, HTSTV_PMT);
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st->st_section_docrc = 1;
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st->st_got_section = pmt_callback;
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}
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ptr += 4;
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len -= 4;
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}
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return 0;
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}
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/**
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* Append CRC
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*/
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static int
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psi_append_crc32(uint8_t *buf, int offset, int maxlen)
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{
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uint32_t crc;
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if(offset + 4 > maxlen)
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return -1;
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crc = psi_crc32(buf, offset);
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buf[offset + 0] = crc >> 24;
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buf[offset + 1] = crc >> 16;
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buf[offset + 2] = crc >> 8;
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buf[offset + 3] = crc;
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assert(psi_crc32(buf, offset + 4) == 0);
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return offset + 4;
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}
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/**
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* PAT generator
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*/
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int
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psi_build_pat(th_transport_t *t, uint8_t *buf, int maxlen, int pmtpid)
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{
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if(maxlen < 12)
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return -1;
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buf[0] = 0;
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buf[1] = 0xb0; /* reserved */
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buf[2] = 12 + 4 - 3; /* Length */
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buf[3] = 0x00; /* transport stream id */
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buf[4] = 0x01;
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buf[5] = 0xc1; /* reserved + current_next_indicator + version */
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buf[6] = 0;
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buf[7] = 0;
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buf[8] = 0; /* Program number, we only have one program */
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buf[9] = 1;
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buf[10] = 0xe0 | (pmtpid >> 8);
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buf[11] = pmtpid;
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return psi_append_crc32(buf, 12, maxlen);
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}
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/**
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* PMT parser, from ISO 13818-1 and ETSI EN 300 468
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*/
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int
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psi_parse_pmt(th_transport_t *t, uint8_t *ptr, int len, int chksvcid)
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{
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uint16_t pcr_pid, pid;
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uint8_t estype;
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int dllen;
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uint8_t dtag, dlen;
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uint16_t sid;
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tv_streamtype_t hts_stream_type;
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th_stream_t *st;
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char lang[4];
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int frameduration;
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if(len < 9)
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return -1;
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lock_assert(&t->tht_stream_mutex);
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sid = ptr[0] << 8 | ptr[1];
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pcr_pid = (ptr[5] & 0x1f) << 8 | ptr[6];
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dllen = (ptr[7] & 0xf) << 8 | ptr[8];
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t->tht_pcr_pid = pcr_pid;
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ptr += 9;
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len -= 9;
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if(chksvcid && sid != t->tht_dvb_service_id)
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return -1;
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while(dllen > 1) {
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dtag = ptr[0];
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dlen = ptr[1];
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len -= 2; ptr += 2; dllen -= 2;
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if(dlen > len)
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break;
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switch(dtag) {
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case DVB_DESC_CA:
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st = transport_add_stream(t, (ptr[2] & 0x1f) << 8 | ptr[3], HTSTV_CA);
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st->st_caid = (ptr[0] << 8) | ptr[1];
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break;
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default:
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break;
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}
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len -= dlen; ptr += dlen; dllen -= dlen;
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}
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while(len >= 5) {
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estype = ptr[0];
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pid = (ptr[1] & 0x1f) << 8 | ptr[2];
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dllen = (ptr[3] & 0xf) << 8 | ptr[4];
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ptr += 5;
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len -= 5;
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frameduration = 0;
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hts_stream_type = 0;
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switch(estype) {
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case 0x01:
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case 0x02:
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hts_stream_type = HTSTV_MPEG2VIDEO;
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break;
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case 0x03:
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case 0x04:
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case 0x81:
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hts_stream_type = HTSTV_MPEG2AUDIO;
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break;
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case 0x1b:
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hts_stream_type = HTSTV_H264;
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break;
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}
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memset(lang, 0, 4);
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while(dllen > 1) {
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dtag = ptr[0];
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dlen = ptr[1];
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len -= 2; ptr += 2; dllen -= 2;
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if(dlen > len)
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break;
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switch(dtag) {
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case DVB_DESC_VIDEO_STREAM:
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frameduration = mpeg2video_framedurations[(ptr[0] >> 3) & 0xf];
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break;
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case DVB_DESC_LANGUAGE:
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memcpy(lang, ptr, 3);
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break;
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case DVB_DESC_TELETEXT:
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if(estype == 0x06)
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hts_stream_type = HTSTV_TELETEXT;
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break;
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case DVB_DESC_AC3:
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if(estype == 0x06 || estype == 0x81)
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hts_stream_type = HTSTV_AC3;
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break;
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default:
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break;
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}
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len -= dlen; ptr += dlen; dllen -= dlen;
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}
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if(hts_stream_type != 0) {
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st = transport_add_stream(t, pid, hts_stream_type);
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st->st_tb = (AVRational){1, 90000};
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memcpy(st->st_lang, lang, 4);
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if(st->st_frame_duration == 0)
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st->st_frame_duration = frameduration;
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}
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}
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if(t->tht_pmt_seen == 0)
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t->tht_config_change(t);
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t->tht_pmt_seen = 1;
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return 0;
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}
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/**
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* PAT generator
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*/
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int
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psi_build_pmt(th_muxer_t *tm, uint8_t *buf0, int maxlen, int pcrpid)
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{
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th_stream_t *st;
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th_muxstream_t *tms;
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int c, tlen, dlen, l;
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uint8_t *buf, *buf1;
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buf = buf0;
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if(maxlen < 12)
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return -1;
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buf[0] = 2; /* table id, always 2 */
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buf[3] = 0x00; /* program id */
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buf[4] = 0x01;
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buf[5] = 0xc1; /* current_next_indicator + version */
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buf[6] = 0;
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buf[7] = 0;
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buf[8] = 0xe0 | (pcrpid >> 8);
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buf[9] = pcrpid;
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buf[10] = 0xf0; /* Program info length */
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buf[11] = 0x00; /* We dont have any such things atm */
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buf += 12;
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tlen = 12;
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LIST_FOREACH(tms, &tm->tm_streams, tms_muxer_link0) {
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st = tms->tms_stream;
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if(tms->tms_index == 0)
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continue;
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switch(st->st_type) {
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case HTSTV_MPEG2VIDEO:
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c = 0x02;
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break;
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case HTSTV_MPEG2AUDIO:
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c = 0x03;
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break;
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case HTSTV_H264:
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c = 0x1b;
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break;
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case HTSTV_AC3:
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c = 0x06;
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break;
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default:
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continue;
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}
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buf[0] = c;
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buf[1] = 0xe0 | (tms->tms_index >> 8);
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buf[2] = tms->tms_index;
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buf1 = &buf[3];
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tlen += 5;
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buf += 5;
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dlen = 0;
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switch(st->st_type) {
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case HTSTV_AC3:
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buf[0] = DVB_DESC_AC3;
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buf[1] = 1;
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buf[2] = 0; /* XXX: generate real AC3 desc */
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dlen = 3;
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break;
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default:
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break;
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}
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tlen += dlen;
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buf += dlen;
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buf1[0] = 0xf0 | (dlen >> 8);
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buf1[1] = dlen;
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}
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l = tlen - 3 + 4;
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buf0[1] = 0xb0 | (l >> 8);
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buf0[2] = l;
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return psi_append_crc32(buf0, tlen, maxlen);
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}
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/*
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* CRC32
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*/
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static uint32_t crc_tab[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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0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
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0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
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0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
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0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
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0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
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0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
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0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
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0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
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0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
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0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
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0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
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0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
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0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
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0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
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0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
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0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
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0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
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0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
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0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
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0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
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0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
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0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
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0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
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0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
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0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
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0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
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0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
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0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
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0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
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0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
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0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
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0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
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0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
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0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
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0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
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0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
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0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
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0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
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0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
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0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
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0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
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};
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uint32_t
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psi_crc32(uint8_t *data, size_t datalen)
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{
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uint32_t crc = 0xffffffff;
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while(datalen--)
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crc = (crc << 8) ^ crc_tab[((crc >> 24) ^ *data++) & 0xff];
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return crc;
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}
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static struct strtab caidnametab[] = {
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{ "Seca", 0x0100 },
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|
{ "CCETT", 0x0200 },
|
|
{ "Deutsche Telecom", 0x0300 },
|
|
{ "Eurodec", 0x0400 },
|
|
{ "Viaccess", 0x0500 },
|
|
{ "Irdeto", 0x0600 },
|
|
{ "Irdeto", 0x0602 },
|
|
{ "Irdeto", 0x0604 },
|
|
{ "Jerroldgi", 0x0700 },
|
|
{ "Matra", 0x0800 },
|
|
{ "NDS", 0x0900 },
|
|
{ "Nokia", 0x0A00 },
|
|
{ "Conax", 0x0B00 },
|
|
{ "NTL", 0x0C00 },
|
|
{ "CryptoWorks", 0x0D00 },
|
|
{ "PowerVu", 0x0E00 },
|
|
{ "Sony", 0x0F00 },
|
|
{ "Tandberg", 0x1000 },
|
|
{ "Thompson", 0x1100 },
|
|
{ "TV-Com", 0x1200 },
|
|
{ "HPT", 0x1300 },
|
|
{ "HRT", 0x1400 },
|
|
{ "IBM", 0x1500 },
|
|
{ "Nera", 0x1600 },
|
|
{ "BetaCrypt", 0x1700 },
|
|
{ "BetaCrypt", 0x1702 },
|
|
{ "BetaCrypt", 0x1722 },
|
|
{ "BetaCrypt", 0x1762 },
|
|
{ "NagraVision", 0x1800 },
|
|
{ "Titan", 0x1900 },
|
|
{ "Telefonica", 0x2000 },
|
|
{ "Stentor", 0x2100 },
|
|
{ "Tadiran Scopus", 0x2200 },
|
|
{ "BARCO AS", 0x2300 },
|
|
{ "StarGuide", 0x2400 },
|
|
{ "Mentor", 0x2500 },
|
|
{ "EBU", 0x2600 },
|
|
{ "GI", 0x4700 },
|
|
{ "Telemann", 0x4800 }
|
|
};
|
|
|
|
const char *
|
|
psi_caid2name(uint16_t caid)
|
|
{
|
|
const char *s = val2str(caid, caidnametab);
|
|
static char buf[20];
|
|
|
|
if(s != NULL)
|
|
return s;
|
|
snprintf(buf, sizeof(buf), "0x%x", caid);
|
|
return buf;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
static struct strtab streamtypetab[] = {
|
|
{ "MPEG2VIDEO", HTSTV_MPEG2VIDEO },
|
|
{ "MPEG2AUDIO", HTSTV_MPEG2AUDIO },
|
|
{ "H264", HTSTV_H264 },
|
|
{ "AC3", HTSTV_AC3 },
|
|
{ "TELETEXT", HTSTV_TELETEXT },
|
|
{ "SUBTITLES", HTSTV_SUBTITLES },
|
|
{ "CA", HTSTV_CA },
|
|
{ "PMT", HTSTV_PMT },
|
|
{ "PAT", HTSTV_PAT },
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
const char *
|
|
htstvstreamtype2txt(tv_streamtype_t s)
|
|
{
|
|
return val2str(s, streamtypetab) ?: "INVALID";
|
|
}
|
|
|
|
|
|
/**
|
|
* Store transport settings into message
|
|
*/
|
|
void
|
|
psi_save_transport_settings(htsmsg_t *m, th_transport_t *t)
|
|
{
|
|
th_stream_t *st;
|
|
htsmsg_t *sub;
|
|
|
|
htsmsg_add_u32(m, "pcr", t->tht_pcr_pid);
|
|
|
|
htsmsg_add_u32(m, "disabled", !!t->tht_disabled);
|
|
|
|
|
|
pthread_mutex_lock(&t->tht_stream_mutex);
|
|
LIST_FOREACH(st, &t->tht_streams, st_link) {
|
|
sub = htsmsg_create();
|
|
|
|
htsmsg_add_u32(sub, "pid", st->st_pid);
|
|
htsmsg_add_str(sub, "type", val2str(st->st_type, streamtypetab) ?: "?");
|
|
|
|
if(st->st_lang[0])
|
|
htsmsg_add_str(sub, "language", st->st_lang);
|
|
|
|
if(st->st_type == HTSTV_CA)
|
|
htsmsg_add_str(sub, "caid", psi_caid2name(st->st_caid));
|
|
|
|
if(st->st_frame_duration)
|
|
htsmsg_add_u32(sub, "frameduration", st->st_frame_duration);
|
|
|
|
htsmsg_add_msg(m, "stream", sub);
|
|
}
|
|
pthread_mutex_unlock(&t->tht_stream_mutex);
|
|
}
|
|
|
|
|
|
/**
|
|
* Load transport info from htsmsg
|
|
*/
|
|
void
|
|
psi_load_transport_settings(htsmsg_t *m, th_transport_t *t)
|
|
{
|
|
htsmsg_t *c;
|
|
htsmsg_field_t *f;
|
|
uint32_t u32;
|
|
th_stream_t *st;
|
|
tv_streamtype_t type;
|
|
const char *v;
|
|
uint32_t pid, i;
|
|
|
|
if(!htsmsg_get_u32(m, "pcr", &u32))
|
|
t->tht_pcr_pid = u32;
|
|
|
|
if(!htsmsg_get_u32(m, "disabled", &u32))
|
|
t->tht_disabled = u32;
|
|
|
|
HTSMSG_FOREACH(f, m) {
|
|
if(strcmp(f->hmf_name, "stream"))
|
|
continue;
|
|
|
|
if((c = htsmsg_get_msg_by_field(f)) == NULL)
|
|
continue;
|
|
|
|
if((v = htsmsg_get_str(c, "type")) == NULL)
|
|
continue;
|
|
|
|
type = str2val(v, streamtypetab);
|
|
if(type == -1)
|
|
continue;
|
|
|
|
if(htsmsg_get_u32(c, "pid", &pid))
|
|
continue;
|
|
|
|
st = transport_add_stream(t, pid, type);
|
|
st->st_tb = (AVRational){1, 90000};
|
|
|
|
if((v = htsmsg_get_str(c, "language")) != NULL)
|
|
av_strlcpy(st->st_lang, v, 4);
|
|
|
|
if(!htsmsg_get_u32(c, "frameduration", &u32))
|
|
st->st_frame_duration = u32;
|
|
|
|
if((v = htsmsg_get_str(c, "caid")) != NULL) {
|
|
i = str2val(v, caidnametab);
|
|
st->st_caid = i < 0 ? strtol(v, NULL, 0) : i;
|
|
}
|
|
}
|
|
}
|