Patch for the scan utility from dvb-apps
Hello
I wrote a patch for the scan utility
This patchs allows scan to write his output in the format asked by mumudvb : http://mumudvb.braice.net/
The patch is joined to this mail, it is against the version 1.1.1 of dvb-apps.
Is this patch ok for you ?
By the way I have an issue : the French DVB-T network doesn't give the good frequencies in the SI-Tables. Is there a way to get the frequency from the card ?
Regards
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Brice A: Yes.
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Q: Are you sure?
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A: Because it reverses the logical flow of conversation.
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util/scan/dump-mumudvb.c +206 -0
@@ -0,0 +1,206 @@ +#include <stdio.h> +#include "dump-mumudvb.h" +#include <linux/dvb/frontend.h> + + +static const char *inv_name [] = { +"0" , +"1" , +"999" +}; + +static const char *fec_name [] = { +"0" , +"12" , +"23" , +"34" , +"45" , +"56" , +"67" , +"78" , +"89" , +"999" +}; + +static const char *qam_name [] = { +"0" , +"16" , +"32" , +"64" , +"128" , +"256" , +"999" +}; + + +static const char *bw_name [] = { +"8" , +"7" , +"6" , +"999" +}; + + +static const char *mode_name [] = { +"2" , +"8" , +"999" +}; + +static const char *guard_name [] = { +"32" , +"16" , +"8" , +"4" , +"999" +}; + + +static const char *hierarchy_name [] = { +"0" , +"1" , +"2" , +"4" , +"999" +}; + +static const char *west_east_flag_name [] = { +"W" , +"E" +}; + +void mumudvb_dump_dvb_parameters (FILE *f,fe_type_t type, +struct dvb_frontend_parameters *p, +char polarity,int orbital_pos,int we_flag) +{ + +switch (type) { +case FE_QPSK : +fprintf (f,"#QPSK Modulation : DVB-S. Satellite : S%i.%i%s\n" , orbital_pos/10 , + orbital_pos %10 , west_east_flag_name[we_flag]); +fprintf (f,"freq=%i\n" , p->frequency /1000 ); +fprintf (f,"pol=%c\n" , polarity); +fprintf (f,"srate=%i\n" , p->u.qpsk.symbol_rate /1000 ); +break ; + +case FE_QAM : +fprintf (f,"#QAM Modulation : Probably DVB-C ---------- Not Tested ----------- \n" ); +fprintf (f,"%i:" , p->frequency /1000000 ); +fprintf (f,"M%s:C:" , qam_name[p->u.qam.modulation]); +fprintf (f,"%i:" , p->u.qam.symbol_rate /1000 ); +break ; + +case FE_OFDM : +fprintf (f,"#OFDM Modulation : DVB-T\n" ); +fprintf (f,"#QAM : %s " , qam_name[p->u.ofdm.constellation]); +fprintf (f,"Inversion : %s " , inv_name[p->inversion]); +fprintf (f,"Coderate HP : %s " , fec_name[p->u.ofdm.code_rate_HP]); +fprintf (f,"Coderate LP : %s " , fec_name[p->u.ofdm.code_rate_LP]); +fprintf (f,"Guard interval : %s " , guard_name[p->u.ofdm.guard_interval]); +fprintf (f,"Transmission mode : %s " , mode_name[p->u.ofdm.transmission_mode]); +fprintf (f,"Hierarchy : %s " , hierarchy_name[p->u.ofdm.hierarchy_information]); +fprintf (f,"\n" ); +if (p->frequency>=0xfffffff ) +fprintf (f,"#==========WARNING=============\n#The network provider probably returned the wrong frequency\n#You have to set manually the freq= option\n\n" ); +else +fprintf (f,"freq=%i\n" , p->frequency ); +fprintf (f,"bandwith=%sMhz\n" , bw_name[p->u.ofdm.bandwidth]); +fprintf (f,"qam=auto\n" ); +fprintf (f,"trans_mode=auto\n" ); +fprintf (f,"guardinterval=auto\n" ); +fprintf (f,"coderate=auto\n" ); +// fprintf (f, ":T:27500:"); +break ; + +case FE_ATSC : +fprintf (f,"%i:" , p->frequency /1000 ); +fprintf (f,"VDR does not support ATSC at this time" ); +break ; + +default : +fprintf (f,"Modulation : %d\n" , type); + ; + }; + +} + +void mumudvb_dump_service_parameter_set (FILE *f, +const char *service_name, +const char *provider_name, +fe_type_t type, +struct dvb_frontend_parameters *p, +char polarity, +int video_pid, +int pcr_pid, +uint16_t *audio_pid, +char audio_lang[][4 ], +int audio_num, +int teletext_pid, +int scrambled, +int ac3_pid, +int service_id, +int network_id, +int transport_stream_id, +int orbital_pos, +int we_flag, +int ca_select, +int channel_num, +int channel_num_mumudvb, +int pmt_pid, +int subtitling_pid) +{ +int i; + +if (channel_num_mumudvb ==0 ) + { +fprintf (f,"#This is an automatically generated config file for mumudvb\n#Check if the ip adresses are good for you\n#You might also have to ad the card=n parameter with n the number of your DVB adapter\n\n" ); +mumudvb_dump_dvb_parameters (f, type, p, polarity, orbital_pos, we_flag); + } +if ((video_pid || audio_pid[0 ]) && ((ca_select >0 ) || ((ca_select ==0 ) && (scrambled ==0 )))) { +fprintf (f,"\n#Channel : \"%s\" Provider : \"%s\" Number : %d\n" , service_name, provider_name, channel_num); +fprintf (f,"ip=239.200.200.2%02i\n" ,channel_num_mumudvb); +fprintf (f,"port=1234\n" ); +fprintf (f,"name=" ); +if (audio_lang && audio_lang[0 ][0 ]) +fprintf (f,"%.4s " , audio_lang[0 ]); +fprintf (f,"%s\n" , service_name); + +fprintf (f,"#Pids are the following : PMT " ); +if ((pcr_pid != video_pid) && (video_pid >0 ))fprintf (f,"Video PCR " ); +else if (video_pid >0 )fprintf (f,"Video " ); +for (i =0 ; i < audio_num; i++) + { +if (audio_pid[i])fprintf (f,"Audio " ); + } +if (ac3_pid)fprintf (f,"AC3 " ); +if (teletext_pid)fprintf (f,"Text " ); +if (subtitling_pid)fprintf (f,"SUB " ); +fprintf (f,"\n" ); +fprintf (f,"pids=" ); +fprintf (f,"%i " , pmt_pid); +if ((pcr_pid != video_pid) && (video_pid >0 )) +fprintf (f,"%i %i" , video_pid, pcr_pid); +else if (video_pid >0 ) +fprintf (f,"%i" , video_pid); +if (audio_pid[0 ]) +fprintf (f," %i" , audio_pid[0 ]); +for (i =1 ; i < audio_num; i++) + { +if (audio_pid[i]) +fprintf (f," %i" , audio_pid[i]); + } +if (ac3_pid) + { +fprintf (f," %i" , ac3_pid); + } +if (scrambled ==1 ) scrambled = ca_select; +if (teletext_pid) +fprintf (f," %d" , teletext_pid); +if (subtitling_pid) +fprintf (f," %d" , subtitling_pid); +// fprintf (f, ":%d:%d:%d:%d:%d:0", teletext_pid, scrambled, +// service_id, network_id, transport_stream_id); +fprintf (f,"\n" ); + } +} +
util/scan/dump-mumudvb.h +39 -0
@@ -0,0 +1,39 @@ +#ifndef __DUMP_MUMUDVB_H__ +#define __DUMP_MUMUDVB_H__ + +#include <stdint.h> +#include <linux/dvb/frontend.h> + +extern +void mumudvb_dump_dvb_parameters (FILE *f,fe_type_t type, +struct dvb_frontend_parameters *p, +char polarity,int orbital_pos,int we_flag); + +extern +void mumudvb_dump_service_parameter_set (FILE *f, +const char *service_name, +const char *provider_name, +fe_type_t type, +struct dvb_frontend_parameters *p, +char polarity, +int video_pid, +int pcr_pid, +uint16_t *audio_pid, +char audio_lang[][4 ], +int audio_num, +int teletext_pid, +int scrambled, +int ac3_pid, +int service_id, +int network_id, +int transport_stream_id, +int orbital_pos, +int we_flag, +int ca_select, +int channel_num, +int channel_num_mumudvb, +int pmt_pid, +int subtitling_pid); + +#endif +
util/scan/Makefile +1 -1
@@ -3,7 +3,7 @@ CFLAGS = -MD -g -Wall -O2 -I../../include LFLAGS = -g -Wall -OBJS = diseqc.o dump-zap.o dump-vdr.o scan.o lnb.o section.o atsc_psip_section.o +OBJS = diseqc.o dump-mumudvb.o dump-zap.o dump-vdr.o scan.o lnb.o section.o atsc_psip_section.o SRCS = $(OBJS:.o=.c) TARGET = scan
util/scan/scan.c +38 -3
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By the way I have an issue : the French DVB-T network doesn't give the good frequencies in the SI-Tables. Is there a way to get the frequency from the card ?
An ioctl FE_GET_FRONTEND on the frontend device returns a struct dvb_frontend_parameters which contains all the tuning and modulation parameters, including the frequency. You need to tune on the frequency first, of course.
In the French DVB-T network, all terrestrial_delivery_descriptors in the NIT are generic. All frequencies are 0xFFFFFFFF and all modulation parameters are those of the average MFN transmitters in the country. They are incorrect for all SFN transmitters and some specific transmitters (including the local services "L8" multiplex).
Otherwise, the most recent (March 31) list of the French DVB-T frequencies by transmitter is available at:
http://www.csa.fr/pdf/frequences_tnt_planifiees_alpha.pdf
-Thierry
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