mirror of
https://github.com/VDR4Arch/vdr.git
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446 lines
12 KiB
C
446 lines
12 KiB
C
/*
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* channels.c: Channel handling
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: channels.c 1.3 2002/10/06 12:41:49 kls Exp $
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*/
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#include "channels.h"
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#ifdef NEWSTRUCT
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#include <linux/dvb/frontend.h>
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#else
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#include <ost/frontend.h>
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#endif
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#include <ctype.h>
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// IMPORTANT NOTE: in the 'sscanf()' calls there is a blank after the '%d'
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// format characters in order to allow any number of blanks after a numeric
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// value!
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// -- Channel Parameter Maps -------------------------------------------------
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const tChannelParameterMap InversionValues[] = {
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{ 0, INVERSION_OFF },
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{ 1, INVERSION_ON },
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{ 999, INVERSION_AUTO },
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{ -1 }
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};
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const tChannelParameterMap BandwidthValues[] = {
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{ 6, BANDWIDTH_6_MHZ },
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{ 7, BANDWIDTH_7_MHZ },
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{ 8, BANDWIDTH_8_MHZ },
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#ifdef NEWSTRUCT
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{ 999, BANDWIDTH_AUTO },
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#endif
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{ -1 }
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};
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const tChannelParameterMap CoderateValues[] = {
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{ 0, FEC_NONE },
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{ 12, FEC_1_2 },
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{ 23, FEC_2_3 },
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{ 34, FEC_3_4 },
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#ifdef NEWSTRUCT
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{ 45, FEC_4_5 },
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#endif
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{ 56, FEC_5_6 },
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#ifdef NEWSTRUCT
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{ 67, FEC_6_7 },
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#endif
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{ 78, FEC_7_8 },
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#ifdef NEWSTRUCT
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{ 89, FEC_8_9 },
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#endif
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{ 999, FEC_AUTO },
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{ -1 }
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};
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const tChannelParameterMap ModulationValues[] = {
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{ 0, QPSK },
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{ 16, QAM_16 },
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{ 32, QAM_32 },
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{ 64, QAM_64 },
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{ 128, QAM_128 },
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{ 256, QAM_256 },
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#ifdef NEWSTRUCT
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{ 999, QAM_AUTO },
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#endif
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{ -1 }
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};
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const tChannelParameterMap TransmissionValues[] = {
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{ 2, TRANSMISSION_MODE_2K },
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{ 8, TRANSMISSION_MODE_8K },
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#ifdef NEWSTRUCT
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{ 999, TRANSMISSION_MODE_AUTO },
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#endif
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{ -1 }
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};
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const tChannelParameterMap GuardValues[] = {
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{ 4, GUARD_INTERVAL_1_4 },
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{ 8, GUARD_INTERVAL_1_8 },
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{ 16, GUARD_INTERVAL_1_16 },
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{ 32, GUARD_INTERVAL_1_32 },
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#ifdef NEWSTRUCT
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{ 999, GUARD_INTERVAL_AUTO },
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#endif
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{ -1 }
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};
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const tChannelParameterMap HierarchyValues[] = {
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{ 0, HIERARCHY_NONE },
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{ 1, HIERARCHY_1 },
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{ 2, HIERARCHY_2 },
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{ 4, HIERARCHY_4 },
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#ifdef NEWSTRUCT
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{ 999, HIERARCHY_AUTO },
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#endif
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{ -1 }
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};
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int UserIndex(int Value, const tChannelParameterMap *Map)
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{
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const tChannelParameterMap *map = Map;
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while (map && map->userValue != -1) {
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if (map->userValue == Value)
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return map - Map;
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map++;
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}
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return -1;
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}
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int DriverIndex(int Value, const tChannelParameterMap *Map)
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{
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const tChannelParameterMap *map = Map;
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while (map && map->userValue != -1) {
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if (map->driverValue == Value)
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return map - Map;
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map++;
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}
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return -1;
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}
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int MapToUser(int Value, const tChannelParameterMap *Map)
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{
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int n = DriverIndex(Value, Map);
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if (n >= 0)
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return Map[n].userValue;
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return -1;
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}
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int MapToDriver(int Value, const tChannelParameterMap *Map)
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{
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int n = UserIndex(Value, Map);
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if (n >= 0)
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return Map[n].driverValue;
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return -1;
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}
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// -- cChannel ---------------------------------------------------------------
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char *cChannel::buffer = NULL;
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cChannel::cChannel(void)
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{
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*name = 0;
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frequency = 0;
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source = 0;
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srate = 0;
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vpid = 0;
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apid1 = 0;
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apid2 = 0;
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dpid1 = 0;
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dpid2 = 0;
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tpid = 0;
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ca = 0;
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sid = 0;
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groupSep = false;
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//XXX
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polarization = 'v';
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inversion = INVERSION_AUTO;
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bandwidth = BANDWIDTH_8_MHZ;
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coderateH = FEC_AUTO;//XXX FEC_2_3
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coderateL = FEC_1_2;//XXX
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modulation = QAM_64;
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transmission = TRANSMISSION_MODE_2K;
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guard = GUARD_INTERVAL_1_32;
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hierarchy = HIERARCHY_NONE;
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}
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cChannel::cChannel(const cChannel *Channel)
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{
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strcpy(name, Channel ? Channel->name : "Pro7");
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frequency = Channel ? Channel->frequency : 12480;
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source = Channel ? Channel->source : 0;
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srate = Channel ? Channel->srate : 27500;
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vpid = Channel ? Channel->vpid : 255;
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apid1 = Channel ? Channel->apid1 : 256;
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apid2 = Channel ? Channel->apid2 : 0;
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dpid1 = Channel ? Channel->dpid1 : 257;
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dpid2 = Channel ? Channel->dpid2 : 0;
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tpid = Channel ? Channel->tpid : 32;
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ca = Channel ? Channel->ca : 0;
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sid = Channel ? Channel->sid : 0;
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groupSep = Channel ? Channel->groupSep : false;
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//XXX
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polarization = Channel ? Channel->polarization : 'v';
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inversion = Channel ? Channel->inversion : INVERSION_AUTO;
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bandwidth = Channel ? Channel->bandwidth : BANDWIDTH_8_MHZ;
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coderateH = Channel ? Channel->coderateH : FEC_AUTO;//XXX FEC_2_3
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coderateL = Channel ? Channel->coderateL : FEC_1_2;//XXX
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modulation = Channel ? Channel->modulation : QAM_64;
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transmission = Channel ? Channel->transmission : TRANSMISSION_MODE_2K;
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guard = Channel ? Channel->guard : GUARD_INTERVAL_1_32;
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hierarchy = Channel ? Channel->hierarchy : HIERARCHY_NONE;
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}
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static int PrintParameter(char *p, char Name, int Value)
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{
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//XXX return Value >= 0 && Value != 999 ? sprintf(p, "%c%d", Name, Value) : 0;
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//XXX let's store 999 for the moment, until we generally switch to the NEWSTRUCT
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//XXX driver (where the defaults will all be AUTO)
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return Value >= 0 && (Value != 999 || (Name != 'I' && Name != 'C')) ? sprintf(p, "%c%d", Name, Value) : 0;
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}
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const char *cChannel::ParametersToString(void)
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{
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char type = *cSource::ToString(source);
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#define ST(s) if (strchr(s, type))
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static char buffer[64];
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char *q = buffer;
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*q = 0;
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ST(" S ") q += sprintf(q, "%c", polarization);
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ST("CST") q += PrintParameter(q, 'I', MapToUser(inversion, InversionValues));
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ST("CST") q += PrintParameter(q, 'C', MapToUser(coderateH, CoderateValues));
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ST(" T") q += PrintParameter(q, 'D', MapToUser(coderateL, CoderateValues));
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ST("C T") q += PrintParameter(q, 'M', MapToUser(modulation, ModulationValues));
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ST(" T") q += PrintParameter(q, 'B', MapToUser(bandwidth, BandwidthValues));
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ST(" T") q += PrintParameter(q, 'T', MapToUser(transmission, TransmissionValues));
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ST(" T") q += PrintParameter(q, 'G', MapToUser(guard, GuardValues));
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ST(" T") q += PrintParameter(q, 'Y', MapToUser(hierarchy, HierarchyValues));
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return buffer;
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}
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static const char *ParseParameter(const char *s, int &Value, const tChannelParameterMap *Map)
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{
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if (*++s) {
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char *p = NULL;
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errno = 0;
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int n = strtol(s, &p, 10);
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if (!errno && p != s) {
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//XXX let's tolerate 999 for the moment, until we generally switch to the NEWSTRUCT
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//XXX driver (where the defaults will all be AUTO)
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//XXX Value = MapToDriver(n, Map);
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//XXX if (Value >= 0)
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//XXX return p;
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int v = MapToDriver(n, Map);
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if (v >= 0) {
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Value = v;
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return p;
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}
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else if (v == 999)
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return p;
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}
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}
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esyslog("ERROR: illegal value for parameter '%c'", *(s - 1));
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return NULL;
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}
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bool cChannel::StringToParameters(const char *s)
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{
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while (s && *s) {
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switch (toupper(*s)) {
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case 'B': s = ParseParameter(s, bandwidth, BandwidthValues); break;
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case 'C': s = ParseParameter(s, coderateH, CoderateValues); break;
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case 'D': s = ParseParameter(s, coderateL, CoderateValues); break;
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case 'G': s = ParseParameter(s, guard, GuardValues); break;
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case 'H': polarization = *s++; break;
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case 'I': s = ParseParameter(s, inversion, InversionValues); break;
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// 'L' reserved for possible circular polarization
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case 'M': s = ParseParameter(s, modulation, ModulationValues); break;
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// 'R' reserved for possible circular polarization
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case 'T': s = ParseParameter(s, transmission, TransmissionValues); break;
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case 'V': polarization = *s++; break;
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case 'Y': s = ParseParameter(s, hierarchy, HierarchyValues); break;
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default: esyslog("ERROR: unknown parameter key '%c'", *s);
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return false;
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}
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}
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return true;
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}
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const char *cChannel::ToText(cChannel *Channel)
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{
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char buf[MaxChannelName * 2];
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char *s = Channel->name;
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if (strchr(s, ':')) {
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s = strcpy(buf, s);
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strreplace(s, ':', '|');
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}
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free(buffer);
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if (Channel->groupSep)
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asprintf(&buffer, ":%s\n", s);
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else {
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char apidbuf[32];
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char *q = apidbuf;
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q += snprintf(q, sizeof(apidbuf), "%d", Channel->apid1);
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if (Channel->apid2)
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q += snprintf(q, sizeof(apidbuf) - (q - apidbuf), ",%d", Channel->apid2);
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if (Channel->dpid1 || Channel->dpid2)
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q += snprintf(q, sizeof(apidbuf) - (q - apidbuf), ";%d", Channel->dpid1);
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if (Channel->dpid2)
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q += snprintf(q, sizeof(apidbuf) - (q - apidbuf), ",%d", Channel->dpid2);
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*q = 0;
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asprintf(&buffer, "%s:%d:%s:%s:%d:%d:%s:%d:%d:%d\n", s, Channel->frequency, Channel->ParametersToString(), cSource::ToString(Channel->source), Channel->srate, Channel->vpid, apidbuf, Channel->tpid, Channel->ca, Channel->sid);
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}
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return buffer;
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}
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const char *cChannel::ToText(void)
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{
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return ToText(this);
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}
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bool cChannel::Parse(const char *s)
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{
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if (*s == ':') {
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if (*++s) {
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strn0cpy(name, s, MaxChannelName);
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groupSep = true;
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number = 0;
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}
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else
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return false;
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}
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else {
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groupSep = false;
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char *namebuf = NULL;
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char *sourcebuf = NULL;
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char *parambuf = NULL;
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char *apidbuf = NULL;
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int fields = sscanf(s, "%a[^:]:%d :%a[^:]:%a[^:] :%d :%d :%a[^:]:%d :%d :%d ", &namebuf, &frequency, ¶mbuf, &sourcebuf, &srate, &vpid, &apidbuf, &tpid, &ca, &sid);
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if (fields >= 9) {
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if (fields == 9) {
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// allow reading of old format
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sid = ca;
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ca = tpid;
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tpid = 0;
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}
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apid1 = apid2 = 0;
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dpid1 = dpid2 = 0;
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bool ok = false;
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if (parambuf && sourcebuf && apidbuf) {
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ok = StringToParameters(parambuf) && (source = cSource::FromString(sourcebuf)) >= 0;
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char *p = strchr(apidbuf, ';');
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if (p)
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*p++ = 0;
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sscanf(apidbuf, "%d ,%d ", &apid1, &apid2);
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if (p)
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sscanf(p, "%d ,%d ", &dpid1, &dpid2);
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}
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strn0cpy(name, namebuf, MaxChannelName);
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free(parambuf);
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free(sourcebuf);
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free(apidbuf);
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free(namebuf);
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return ok;
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}
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else
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return false;
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}
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strreplace(name, '|', ':');
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return true;
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}
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bool cChannel::Save(FILE *f)
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{
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return fprintf(f, ToText()) > 0;
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}
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// -- cChannels --------------------------------------------------------------
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cChannels Channels;
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bool cChannels::Load(const char *FileName, bool AllowComments)
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{
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if (cConfig<cChannel>::Load(FileName, AllowComments)) {
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ReNumber();
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return true;
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}
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return false;
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}
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int cChannels::GetNextGroup(int Idx)
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{
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cChannel *channel = Get(++Idx);
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while (channel && !channel->GroupSep())
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channel = Get(++Idx);
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return channel ? Idx : -1;
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}
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int cChannels::GetPrevGroup(int Idx)
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{
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cChannel *channel = Get(--Idx);
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while (channel && !channel->GroupSep())
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channel = Get(--Idx);
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return channel ? Idx : -1;
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}
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int cChannels::GetNextNormal(int Idx)
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{
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cChannel *channel = Get(++Idx);
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while (channel && channel->GroupSep())
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channel = Get(++Idx);
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return channel ? Idx : -1;
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}
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void cChannels::ReNumber( void )
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{
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int Number = 0;
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cChannel *ch = (cChannel *)First();
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while (ch) {
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if (!ch->GroupSep())
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ch->SetNumber(++Number);
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ch = (cChannel *)ch->Next();
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}
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maxNumber = Number;
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}
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cChannel *cChannels::GetByNumber(int Number)
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{
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cChannel *channel = (cChannel *)First();
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while (channel) {
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if (!channel->GroupSep() && channel->Number() == Number)
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return channel;
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channel = (cChannel *)channel->Next();
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}
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return NULL;
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}
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cChannel *cChannels::GetByServiceID(unsigned short ServiceId)
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{
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cChannel *channel = (cChannel *)First();
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while (channel) {
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if (!channel->GroupSep() && channel->Sid() == ServiceId)
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return channel;
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channel = (cChannel *)channel->Next();
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}
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return NULL;
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}
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bool cChannels::SwitchTo(int Number)
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{
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cChannel *channel = GetByNumber(Number);
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return channel && cDevice::PrimaryDevice()->SwitchChannel(channel, true);
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}
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const char *cChannels::GetChannelNameByNumber(int Number)
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{
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cChannel *channel = GetByNumber(Number);
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return channel ? channel->Name() : NULL;
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}
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