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diff --git a/Documentation/DocBook/media/dvb/examples.xml b/Documentation/DocBook/media/dvb/examples.xml deleted file mode 100644 index 837fb3b64..000000000 --- a/Documentation/DocBook/media/dvb/examples.xml +++ /dev/null @@ -1,367 +0,0 @@ -<title>Examples</title> -<para>In this section we would like to present some examples for using the DVB API. -</para> -<para>NOTE: This section is out of date, and the code below won't even - compile. Please refer to the - <ulink url="https://linuxtv.org/docs/libdvbv5/index.html">libdvbv5</ulink> - for updated/recommended examples. -</para> - -<section id="tuning"> -<title>Tuning</title> -<para>We will start with a generic tuning subroutine that uses the frontend and SEC, as well as -the demux devices. The example is given for QPSK tuners, but can easily be adjusted for -QAM. -</para> -<programlisting> - #include <sys/ioctl.h> - #include <stdio.h> - #include <stdint.h> - #include <sys/types.h> - #include <sys/stat.h> - #include <fcntl.h> - #include <time.h> - #include <unistd.h> - - #include <linux/dvb/dmx.h> - #include <linux/dvb/frontend.h> - #include <linux/dvb/sec.h> - #include <sys/poll.h> - - #define DMX "/dev/dvb/adapter0/demux1" - #define FRONT "/dev/dvb/adapter0/frontend1" - #define SEC "/dev/dvb/adapter0/sec1" - - /⋆ routine for checking if we have a signal and other status information⋆/ - int FEReadStatus(int fd, fe_status_t ⋆stat) - { - int ans; - - if ( (ans = ioctl(fd,FE_READ_STATUS,stat) < 0)){ - perror("FE READ STATUS: "); - return -1; - } - - if (⋆stat & FE_HAS_POWER) - printf("FE HAS POWER\n"); - - if (⋆stat & FE_HAS_SIGNAL) - printf("FE HAS SIGNAL\n"); - - if (⋆stat & FE_SPECTRUM_INV) - printf("SPEKTRUM INV\n"); - - return 0; - } - - - /⋆ tune qpsk ⋆/ - /⋆ freq: frequency of transponder ⋆/ - /⋆ vpid, apid, tpid: PIDs of video, audio and teletext TS packets ⋆/ - /⋆ diseqc: DiSEqC address of the used LNB ⋆/ - /⋆ pol: Polarisation ⋆/ - /⋆ srate: Symbol Rate ⋆/ - /⋆ fec. FEC ⋆/ - /⋆ lnb_lof1: local frequency of lower LNB band ⋆/ - /⋆ lnb_lof2: local frequency of upper LNB band ⋆/ - /⋆ lnb_slof: switch frequency of LNB ⋆/ - - int set_qpsk_channel(int freq, int vpid, int apid, int tpid, - int diseqc, int pol, int srate, int fec, int lnb_lof1, - int lnb_lof2, int lnb_slof) - { - struct secCommand scmd; - struct secCmdSequence scmds; - struct dmx_pes_filter_params pesFilterParams; - FrontendParameters frp; - struct pollfd pfd[1]; - FrontendEvent event; - int demux1, demux2, demux3, front; - - frequency = (uint32_t) freq; - symbolrate = (uint32_t) srate; - - if((front = open(FRONT,O_RDWR)) < 0){ - perror("FRONTEND DEVICE: "); - return -1; - } - - if((sec = open(SEC,O_RDWR)) < 0){ - perror("SEC DEVICE: "); - return -1; - } - - if (demux1 < 0){ - if ((demux1=open(DMX, O_RDWR|O_NONBLOCK)) - < 0){ - perror("DEMUX DEVICE: "); - return -1; - } - } - - if (demux2 < 0){ - if ((demux2=open(DMX, O_RDWR|O_NONBLOCK)) - < 0){ - perror("DEMUX DEVICE: "); - return -1; - } - } - - if (demux3 < 0){ - if ((demux3=open(DMX, O_RDWR|O_NONBLOCK)) - < 0){ - perror("DEMUX DEVICE: "); - return -1; - } - } - - if (freq < lnb_slof) { - frp.Frequency = (freq - lnb_lof1); - scmds.continuousTone = SEC_TONE_OFF; - } else { - frp.Frequency = (freq - lnb_lof2); - scmds.continuousTone = SEC_TONE_ON; - } - frp.Inversion = INVERSION_AUTO; - if (pol) scmds.voltage = SEC_VOLTAGE_18; - else scmds.voltage = SEC_VOLTAGE_13; - - scmd.type=0; - scmd.u.diseqc.addr=0x10; - scmd.u.diseqc.cmd=0x38; - scmd.u.diseqc.numParams=1; - scmd.u.diseqc.params[0] = 0xF0 | ((diseqc ⋆ 4) & 0x0F) | - (scmds.continuousTone == SEC_TONE_ON ? 1 : 0) | - (scmds.voltage==SEC_VOLTAGE_18 ? 2 : 0); - - scmds.miniCommand=SEC_MINI_NONE; - scmds.numCommands=1; - scmds.commands=&scmd; - if (ioctl(sec, SEC_SEND_SEQUENCE, &scmds) < 0){ - perror("SEC SEND: "); - return -1; - } - - if (ioctl(sec, SEC_SEND_SEQUENCE, &scmds) < 0){ - perror("SEC SEND: "); - return -1; - } - - frp.u.qpsk.SymbolRate = srate; - frp.u.qpsk.FEC_inner = fec; - - if (ioctl(front, FE_SET_FRONTEND, &frp) < 0){ - perror("QPSK TUNE: "); - return -1; - } - - pfd[0].fd = front; - pfd[0].events = POLLIN; - - if (poll(pfd,1,3000)){ - if (pfd[0].revents & POLLIN){ - printf("Getting QPSK event\n"); - if ( ioctl(front, FE_GET_EVENT, &event) - - == -EOVERFLOW){ - perror("qpsk get event"); - return -1; - } - printf("Received "); - switch(event.type){ - case FE_UNEXPECTED_EV: - printf("unexpected event\n"); - return -1; - case FE_FAILURE_EV: - printf("failure event\n"); - return -1; - - case FE_COMPLETION_EV: - printf("completion event\n"); - } - } - } - - - pesFilterParams.pid = vpid; - pesFilterParams.input = DMX_IN_FRONTEND; - pesFilterParams.output = DMX_OUT_DECODER; - pesFilterParams.pes_type = DMX_PES_VIDEO; - pesFilterParams.flags = DMX_IMMEDIATE_START; - if (ioctl(demux1, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ - perror("set_vpid"); - return -1; - } - - pesFilterParams.pid = apid; - pesFilterParams.input = DMX_IN_FRONTEND; - pesFilterParams.output = DMX_OUT_DECODER; - pesFilterParams.pes_type = DMX_PES_AUDIO; - pesFilterParams.flags = DMX_IMMEDIATE_START; - if (ioctl(demux2, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ - perror("set_apid"); - return -1; - } - - pesFilterParams.pid = tpid; - pesFilterParams.input = DMX_IN_FRONTEND; - pesFilterParams.output = DMX_OUT_DECODER; - pesFilterParams.pes_type = DMX_PES_TELETEXT; - pesFilterParams.flags = DMX_IMMEDIATE_START; - if (ioctl(demux3, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ - perror("set_tpid"); - return -1; - } - - return has_signal(fds); - } - -</programlisting> -<para>The program assumes that you are using a universal LNB and a standard DiSEqC -switch with up to 4 addresses. Of course, you could build in some more checking if -tuning was successful and maybe try to repeat the tuning process. Depending on the -external hardware, i.e. LNB and DiSEqC switch, and weather conditions this may be -necessary. -</para> -</section> - -<section id="the_dvr_device"> -<title>The DVR device</title> -<para>The following program code shows how to use the DVR device for recording. -</para> -<programlisting> - #include <sys/ioctl.h> - #include <stdio.h> - #include <stdint.h> - #include <sys/types.h> - #include <sys/stat.h> - #include <fcntl.h> - #include <time.h> - #include <unistd.h> - - #include <linux/dvb/dmx.h> - #include <linux/dvb/video.h> - #include <sys/poll.h> - #define DVR "/dev/dvb/adapter0/dvr1" - #define AUDIO "/dev/dvb/adapter0/audio1" - #define VIDEO "/dev/dvb/adapter0/video1" - - #define BUFFY (188⋆20) - #define MAX_LENGTH (1024⋆1024⋆5) /⋆ record 5MB ⋆/ - - - /⋆ switch the demuxes to recording, assuming the transponder is tuned ⋆/ - - /⋆ demux1, demux2: file descriptor of video and audio filters ⋆/ - /⋆ vpid, apid: PIDs of video and audio channels ⋆/ - - int switch_to_record(int demux1, int demux2, uint16_t vpid, uint16_t apid) - { - struct dmx_pes_filter_params pesFilterParams; - - if (demux1 < 0){ - if ((demux1=open(DMX, O_RDWR|O_NONBLOCK)) - < 0){ - perror("DEMUX DEVICE: "); - return -1; - } - } - - if (demux2 < 0){ - if ((demux2=open(DMX, O_RDWR|O_NONBLOCK)) - < 0){ - perror("DEMUX DEVICE: "); - return -1; - } - } - - pesFilterParams.pid = vpid; - pesFilterParams.input = DMX_IN_FRONTEND; - pesFilterParams.output = DMX_OUT_TS_TAP; - pesFilterParams.pes_type = DMX_PES_VIDEO; - pesFilterParams.flags = DMX_IMMEDIATE_START; - if (ioctl(demux1, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ - perror("DEMUX DEVICE"); - return -1; - } - pesFilterParams.pid = apid; - pesFilterParams.input = DMX_IN_FRONTEND; - pesFilterParams.output = DMX_OUT_TS_TAP; - pesFilterParams.pes_type = DMX_PES_AUDIO; - pesFilterParams.flags = DMX_IMMEDIATE_START; - if (ioctl(demux2, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ - perror("DEMUX DEVICE"); - return -1; - } - return 0; - } - - /⋆ start recording MAX_LENGTH , assuming the transponder is tuned ⋆/ - - /⋆ demux1, demux2: file descriptor of video and audio filters ⋆/ - /⋆ vpid, apid: PIDs of video and audio channels ⋆/ - int record_dvr(int demux1, int demux2, uint16_t vpid, uint16_t apid) - { - int i; - int len; - int written; - uint8_t buf[BUFFY]; - uint64_t length; - struct pollfd pfd[1]; - int dvr, dvr_out; - - /⋆ open dvr device ⋆/ - if ((dvr = open(DVR, O_RDONLY|O_NONBLOCK)) < 0){ - perror("DVR DEVICE"); - return -1; - } - - /⋆ switch video and audio demuxes to dvr ⋆/ - printf ("Switching dvr on\n"); - i = switch_to_record(demux1, demux2, vpid, apid); - printf("finished: "); - - printf("Recording %2.0f MB of test file in TS format\n", - MAX_LENGTH/(1024.0⋆1024.0)); - length = 0; - - /⋆ open output file ⋆/ - if ((dvr_out = open(DVR_FILE,O_WRONLY|O_CREAT - |O_TRUNC, S_IRUSR|S_IWUSR - |S_IRGRP|S_IWGRP|S_IROTH| - S_IWOTH)) < 0){ - perror("Can't open file for dvr test"); - return -1; - } - - pfd[0].fd = dvr; - pfd[0].events = POLLIN; - - /⋆ poll for dvr data and write to file ⋆/ - while (length < MAX_LENGTH ) { - if (poll(pfd,1,1)){ - if (pfd[0].revents & POLLIN){ - len = read(dvr, buf, BUFFY); - if (len < 0){ - perror("recording"); - return -1; - } - if (len > 0){ - written = 0; - while (written < len) - written += - write (dvr_out, - buf, len); - length += len; - printf("written %2.0f MB\r", - length/1024./1024.); - } - } - } - } - return 0; - } - -</programlisting> - -</section> |