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• make : *** [ffmpeg_g] Error 1

  22 décembre 2014, par P C SAS3

  hi i am trying to install ffmpeg . i choose to do it from source because i am using a vps server so i did these steps i am using git command for getting source from github after compiling i got the below result

  #cd ~/ffmpeg_sources
  
  #git clone --depth 1 git://source.ffmpeg.org/ffmpeg
  
  #cd ffmpeg
  
  #PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure --prefix="$HOME/ffmpeg_build" --extra-cflags="-I$HOME/ffmpeg_build/include" --extra-ldflags="-L$HOME/ffmpeg_build/lib" --bindir="$HOME/bin" --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  
  
  
  
  
  install prefix            /root/ffmpeg_build
  
  source path               .
  
  C compiler                gcc
  
  C library                 glibc
  
  ARCH                      x86 (generic)
  
  big-endian                no
  
  runtime cpu detection     yes
  
  yasm                      yes
  
  MMX enabled               yes
  
  MMXEXT enabled            yes
  
  3DNow! enabled            yes
  
  3DNow! extended enabled   yes
  
  SSE enabled               yes
  
  SSSE3 enabled             yes
  
  AVX enabled               yes
  
  XOP enabled               yes
  
  FMA3 enabled              yes
  
  FMA4 enabled              yes
  
  i686 features enabled     yes
  
  CMOV is fast              yes
  
  EBX available             yes
  
  EBP available             yes
  
  debug symbols             yes
  
  strip symbols             yes
  
  optimize for size         no
  
  optimizations             yes
  
  static                    yes
  
  shared                    no
  
  postprocessing support    yes
  
  new filter support        yes
  
  network support           yes
  
  threading support         pthreads
  
  safe bitstream reader     yes
  
  SDL support               no
  
  opencl enabled            no
  
  texi2html enabled         no
  
  perl enabled              yes
  
  pod2man enabled           yes
  
  makeinfo enabled          no
  
  makeinfo supports HTML    no
  
  
  
  External libraries:
  
  iconv            libopus            libx264
  
  libfdk_aac        libvorbis        zlib
  
  libmp3lame        libvpx
  
  
  
  Enabled decoders:
  
  aac            bfi            gsm
  
  aac_latm        bink            gsm_ms
  
  aasc            binkaudio_dct        h261
  
  ac3            binkaudio_rdft        h263
  
  ac3_fixed        bintext            h263i
  
  adpcm_4xm        bmp            h263p
  
  adpcm_adx        bmv_audio        h264
  
  adpcm_afc        bmv_video        hevc
  
  adpcm_ct        brender_pix        hnm4_video
  
  adpcm_dtk        c93            huffyuv
  
  adpcm_ea        cavs            iac
  
  adpcm_ea_maxis_xa    cdgraphics        idcin
  
  adpcm_ea_r1        cdxl            idf
  
  adpcm_ea_r2        cinepak            iff_byterun1
  
  adpcm_ea_r3        cljr            iff_ilbm
  
  adpcm_ea_xas        cllc            imc
  
  adpcm_g722        comfortnoise        indeo2
  
  adpcm_g726        cook            indeo3
  
  adpcm_g726le        cpia            indeo4
  
  adpcm_ima_amv        cscd            indeo5
  
  adpcm_ima_apc        cyuv            interplay_dpcm
  
  adpcm_ima_dk3        dca            interplay_video
  
  adpcm_ima_dk4        dfa            jacosub
  
  adpcm_ima_ea_eacs    dirac            jpeg2000
  
  adpcm_ima_ea_sead    dnxhd            jpegls
  
  adpcm_ima_iss        dpx            jv
  
  adpcm_ima_oki        dsd_lsbf        kgv1
  
  adpcm_ima_qt        dsd_lsbf_planar        kmvc
  
  adpcm_ima_rad        dsd_msbf        lagarith
  
  adpcm_ima_smjpeg    dsd_msbf_planar        libfdk_aac
  
  adpcm_ima_wav        dsicinaudio        libopus
  
  adpcm_ima_ws        dsicinvideo        libvorbis
  
  adpcm_ms        dvbsub            libvpx_vp8
  
  adpcm_sbpro_2        dvdsub            libvpx_vp9
  
  adpcm_sbpro_3        dvvideo            loco
  
  adpcm_sbpro_4        dxa            mace3
  
  adpcm_swf        dxtory            mace6
  
  adpcm_thp        eac3            mdec
  
  adpcm_vima        eacmv            metasound
  
  adpcm_xa        eamad            microdvd
  
  adpcm_yamaha        eatgq            mimic
  
  aic            eatgv            mjpeg
  
  alac            eatqi            mjpegb
  
  alias_pix        eightbps        mlp
  
  als            eightsvx_exp        mmvideo
  
  amrnb            eightsvx_fib        motionpixels
  
  amrwb            escape124        movtext
  
  amv            escape130        mp1
  
  anm            evrc            mp1float
  
  ansi            exr            mp2
  
  ape            ffv1            mp2float
  
  apng            ffvhuff            mp3
  
  ass            ffwavesynth        mp3adu
  
  asv1            fic            mp3adufloat
  
  asv2            flac            mp3float
  
  atrac1            flashsv            mp3on4
  
  atrac3            flashsv2        mp3on4float
  
  atrac3p            flic            mpc7
  
  aura            flv            mpc8
  
  aura2            fourxm            mpeg1video
  
  avrn            fraps            mpeg2video
  
  avrp            frwu            mpeg4
  
  avs            g2m            mpegvideo
  
  avui            g723_1            mpl2
  
  ayuv            g729            msa1
  
  bethsoftvid        gif            msmpeg4v1
  
  msmpeg4v2        qcelp            twinvq
  
  msmpeg4v3        qdm2            txd
  
  msrle            qdraw            ulti
  
  mss1            qpeg            utvideo
  
  mss2            qtrle            v210
  
  msvideo1        r10k            v210x
  
  mszh            r210            v308
  
  mts2            ra_144            v408
  
  mvc1            ra_288            v410
  
  mvc2            ralf            vb
  
  mxpeg            rawvideo        vble
  
  nellymoser        realtext        vc1
  
  nuv            rl2            vc1image
  
  on2avc            roq            vcr1
  
  opus            roq_dpcm        vima
  
  paf_audio        rpza            vmdaudio
  
  paf_video        rv10            vmdvideo
  
  pam            rv20            vmnc
  
  pbm            rv30            vorbis
  
  pcm_alaw        rv40            vp3
  
  pcm_bluray        s302m            vp5
  
  pcm_dvd            sami            vp6
  
  pcm_f32be        sanm            vp6a
  
  pcm_f32le        sgi            vp6f
  
  pcm_f64be        sgirle            vp7
  
  pcm_f64le        shorten            vp8
  
  pcm_lxf            sipr            vp9
  
  pcm_mulaw        smackaud        vplayer
  
  pcm_s16be        smacker            vqa
  
  pcm_s16be_planar    smc            wavpack
  
  pcm_s16le        smvjpeg            webp
  
  pcm_s16le_planar    snow            webvtt
  
  pcm_s24be        sol_dpcm        wmalossless
  
  pcm_s24daud        sonic            wmapro
  
  pcm_s24le        sp5x            wmav1
  
  pcm_s24le_planar    srt            wmav2
  
  pcm_s32be        ssa            wmavoice
  
  pcm_s32le        stl            wmv1
  
  pcm_s32le_planar    subrip            wmv2
  
  pcm_s8            subviewer        wmv3
  
  pcm_s8_planar        subviewer1        wmv3image
  
  pcm_u16be        sunrast            wnv1
  
  pcm_u16le        svq1            ws_snd1
  
  pcm_u24be        svq3            xan_dpcm
  
  pcm_u24le        tak            xan_wc3
  
  pcm_u32be        targa            xan_wc4
  
  pcm_u32le        targa_y216        xbin
  
  pcm_u8            text            xbm
  
  pcm_zork        theora            xface
  
  pcx            thp            xl
  
  pgm            tiertexseqvideo        xsub
  
  pgmyuv            tiff            xwd
  
  pgssub            tmv            y41p
  
  pictor            truehd            yop
  
  pjs            truemotion1        yuv4
  
  png            truemotion2        zero12v
  
  ppm            truespeech        zerocodec
  
  prores            tscc            zlib
  
  prores_lgpl        tscc2            zmbv
  
  ptx            tta
  
  
  
  Enabled encoders:
  
  a64multi        libopus            pgmyuv
  
  a64multi5        libvorbis        png
  
  aac            libvpx_vp8        ppm
  
  ac3            libvpx_vp9        prores
  
  ac3_fixed        libx264            prores_aw
  
  adpcm_adx        libx264rgb        prores_ks
  
  adpcm_g722        ljpeg            qtrle
  
  adpcm_g726        mjpeg            r10k
  
  adpcm_ima_qt        movtext            r210
  
  adpcm_ima_wav        mp2            ra_144
  
  adpcm_ms        mp2fixed        rawvideo
  
  adpcm_swf        mpeg1video        roq
  
  adpcm_yamaha        mpeg2video        roq_dpcm
  
  alac            mpeg4            rv10
  
  alias_pix        msmpeg4v2        rv20
  
  amv            msmpeg4v3        s302m
  
  ass            msvideo1        sgi
  
  asv1            nellymoser        snow
  
  asv2            pam            sonic
  
  avrp            pbm            sonic_ls
  
  avui            pcm_alaw        srt
  
  ayuv            pcm_f32be        ssa
  
  bmp            pcm_f32le        subrip
  
  cinepak            pcm_f64be        sunrast
  
  cljr            pcm_f64le        svq1
  
  comfortnoise        pcm_mulaw        targa
  
  dca            pcm_s16be        tiff
  
  dnxhd            pcm_s16be_planar    tta
  
  dpx            pcm_s16le        utvideo
  
  dvbsub            pcm_s16le_planar    v210
  
  dvdsub            pcm_s24be        v308
  
  dvvideo            pcm_s24daud        v408
  
  eac3            pcm_s24le        v410
  
  ffv1            pcm_s24le_planar    vorbis
  
  ffvhuff            pcm_s32be        wavpack
  
  flac            pcm_s32le        webvtt
  
  flashsv            pcm_s32le_planar    wmav1
  
  flashsv2        pcm_s8            wmav2
  
  flv            pcm_s8_planar        wmv1
  
  g723_1            pcm_u16be        wmv2
  
  gif            pcm_u16le        xbm
  
  h261            pcm_u24be        xface
  
  h263            pcm_u24le        xsub
  
  h263p            pcm_u32be        xwd
  
  huffyuv            pcm_u32le        y41p
  
  jpeg2000        pcm_u8            yuv4
  
  jpegls            pcx            zlib
  
  libfdk_aac        pgm            zmbv
  
  libmp3lame
  
  
  
  Enabled hwaccels:
  
  
  
  Enabled parsers:
  
  aac            dvd_nav            mpegvideo
  
  aac_latm        dvdsub            opus
  
  ac3            flac            png
  
  adx            gsm            pnm
  
  bmp            h261            rv30
  
  cavsvideo        h263            rv40
  
  cook            h264            tak
  
  dca            hevc            vc1
  
  dirac            mjpeg            vorbis
  
  dnxhd            mlp            vp3
  
  dpx            mpeg4video        vp8
  
  dvbsub            mpegaudio        vp9
  
  
  
  Enabled demuxers:
  
  aac            h261            mxg
  
  ac3            h263            nc
  
  act            h264            nistsphere
  
  adf            hevc            nsv
  
  adp            hls            nut
  
  adx            hnm            nuv
  
  aea            ico            ogg
  
  afc            idcin            oma
  
  aiff            idf            paf
  
  amr            iff            pcm_alaw
  
  anm            ilbc            pcm_f32be
  
  apc            image2            pcm_f32le
  
  ape            image2_alias_pix    pcm_f64be
  
  apng            image2_brender_pix    pcm_f64le
  
  aqtitle            image2pipe        pcm_mulaw
  
  asf            image_bmp_pipe        pcm_s16be
  
  ass            image_dpx_pipe        pcm_s16le
  
  ast            image_exr_pipe        pcm_s24be
  
  au            image_j2k_pipe        pcm_s24le
  
  avi            image_jpeg_pipe        pcm_s32be
  
  avr            image_jpegls_pipe    pcm_s32le
  
  avs            image_pictor_pipe    pcm_s8
  
  bethsoftvid        image_png_pipe        pcm_u16be
  
  bfi            image_sgi_pipe        pcm_u16le
  
  bink            image_sunrast_pipe    pcm_u24be
  
  bintext            image_tiff_pipe        pcm_u24le
  
  bit            image_webp_pipe        pcm_u32be
  
  bmv            ingenient        pcm_u32le
  
  boa            ipmovie            pcm_u8
  
  brstm            ircam            pjs
  
  c93            iss            pmp
  
  caf            iv8            pva
  
  cavsvideo        ivf            pvf
  
  cdg            jacosub            qcp
  
  cdxl            jv            r3d
  
  cine            latm            rawvideo
  
  concat            live_flv        realtext
  
  data            lmlm4            redspark
  
  daud            loas            rl2
  
  dfa            lrc            rm
  
  dirac            lvf            roq
  
  dnxhd            lxf            rpl
  
  dsf            m4v            rsd
  
  dsicin            matroska        rso
  
  dts            mgsts            rtp
  
  dtshd            microdvd        rtsp
  
  dv            mjpeg            sami
  
  dxa            mlp            sap
  
  ea            mlv            sbg
  
  ea_cdata        mm            sdp
  
  eac3            mmf            sdr2
  
  epaf            mov            segafilm
  
  ffm            mp3            shorten
  
  ffmetadata        mpc            siff
  
  filmstrip        mpc8            sln
  
  flac            mpegps            smacker
  
  flic            mpegts            smjpeg
  
  flv            mpegtsraw        smush
  
  fourxm            mpegvideo        sol
  
  frm            mpl2            sox
  
  g722            mpsub            spdif
  
  g723_1            msnwc_tcp        srt
  
  g729            mtv            stl
  
  gif            mv            str
  
  gsm            mvi            subviewer
  
  gxf            mxf            subviewer1
  
  sup            vc1t            webvtt
  
  swf            vivo            wsaud
  
  tak            vmd            wsvqa
  
  tedcaptions        vobsub            wtv
  
  thp            voc            wv
  
  tiertexseq        vplayer            xa
  
  tmv            vqf            xbin
  
  truehd            w64            xmv
  
  tta            wav            xwma
  
  tty            wc3            yop
  
  txd            webm_dash_manifest    yuv4mpegpipe
  
  vc1
  
  
  
  Enabled muxers:
  
  a64            ipod            pcm_s24le
  
  ac3            ircam            pcm_s32be
  
  adts            ismv            pcm_s32le
  
  adx            ivf            pcm_s8
  
  aiff            jacosub            pcm_u16be
  
  amr            latm            pcm_u16le
  
  asf            lrc            pcm_u24be
  
  asf_stream        m4v            pcm_u24le
  
  ass            matroska        pcm_u32be
  
  ast            matroska_audio        pcm_u32le
  
  au            md5            pcm_u8
  
  avi            microdvd        psp
  
  avm2            mjpeg            rawvideo
  
  bit            mkvtimestamp_v2        rm
  
  caf            mlp            roq
  
  cavsvideo        mmf            rso
  
  crc            mov            rtp
  
  dash            mp2            rtp_mpegts
  
  data            mp3            rtsp
  
  daud            mp4            sap
  
  dirac            mpeg1system        segment
  
  dnxhd            mpeg1vcd        smjpeg
  
  dts            mpeg1video        smoothstreaming
  
  dv            mpeg2dvd        sox
  
  eac3            mpeg2svcd        spdif
  
  f4v            mpeg2video        spx
  
  ffm            mpeg2vob        srt
  
  ffmetadata        mpegts            stream_segment
  
  filmstrip        mpjpeg            swf
  
  flac            mxf            tee
  
  flv            mxf_d10            tg2
  
  framecrc        null            tgp
  
  framemd5        nut            truehd
  
  g722            oga            uncodedframecrc
  
  g723_1            ogg            vc1
  
  gif            oma            vc1t
  
  gxf            opus            voc
  
  h261            pcm_alaw        w64
  
  h263            pcm_f32be        wav
  
  h264            pcm_f32le        webm
  
  hds            pcm_f64be        webm_dash_manifest
  
  hevc            pcm_f64le        webp
  
  hls            pcm_mulaw        webvtt
  
  ico            pcm_s16be        wtv
  
  ilbc            pcm_s16le        wv
  
  image2            pcm_s24be        yuv4mpegpipe
  
  image2pipe
  
  
  
  Enabled protocols:
  
  cache            http            rtmpt
  
  concat            httpproxy        rtp
  
  crypto            icecast            srtp
  
  data            md5            subfile
  
  ffrtmphttp        mmsh            tcp
  
  file            mmst            udp
  
  ftp            pipe            udplite
  
  gopher            rtmp            unix
  
  hls
  
  
  
  Enabled filters:
  
  adelay            dejudder        pad
  
  aecho            delogo            pan
  
  aeval            deshake            perms
  
  aevalsrc        drawbox            perspective
  
  afade            drawgrid        phase
  
  aformat            earwax            pixdesctest
  
  ainterleave        ebur128            pp
  
  allpass            edgedetect        psnr
  
  alphaextract        elbg            pullup
  
  alphamerge        equalizer        removelogo
  
  amerge            extractplanes        replaygain
  
  amix            fade            rgbtestsrc
  
  amovie            field            rotate
  
  anull            fieldmatch        sab
  
  anullsink        fieldorder        scale
  
  anullsrc        flanger            select
  
  apad            format            sendcmd
  
  aperms            fps            separatefields
  
  aphaser            framepack        setdar
  
  aresample        framestep        setfield
  
  aselect            geq            setpts
  
  asendcmd        gradfun            setsar
  
  asetnsamples        haldclut        settb
  
  asetpts            haldclutsrc        showcqt
  
  asetrate        hflip            showinfo
  
  asettb            highpass        showspectrum
  
  ashowinfo        histeq            showwaves
  
  asplit            histogram        shuffleplanes
  
  astats            hqdn3d            signalstats
  
  astreamsync        hqx            silencedetect
  
  atempo            hue            silenceremove
  
  atrim            idet            sine
  
  avectorscope        il            smartblur
  
  bandpass        interlace        smptebars
  
  bandreject        interleave        smptehdbars
  
  bass            join            split
  
  bbox            kerndeint        spp
  
  biquad            lenscorrection        stereo3d
  
  blackdetect        life            super2xsai
  
  blackframe        lowpass            swapuv
  
  blend            lut            telecine
  
  boxblur            lut3d            testsrc
  
  cellauto        lutrgb            thumbnail
  
  channelmap        lutyuv            tile
  
  channelsplit        mandelbrot        tinterlace
  
  codecview        mcdeint            transpose
  
  color            mergeplanes        treble
  
  colorbalance        movie            trim
  
  colorchannelmixer    mp            unsharp
  
  colorlevels        mpdecimate        uspp
  
  colormatrix        mptestsrc        vflip
  
  compand            negate            vignette
  
  concat            noformat        volume
  
  copy            noise            volumedetect
  
  crop            null            w3fdif
  
  cropdetect        nullsink        xbr
  
  curves            nullsrc            yadif
  
  dctdnoiz        overlay            zoompan
  
  decimate        owdenoise
  
  
  
  Enabled bsfs:
  
  aac_adtstoasc        imx_dump_header        mp3_header_decompress
  
  chomp            mjpeg2jpeg        noise
  
  dump_extradata        mjpega_dump_header    remove_extradata
  
  h264_mp4toannexb    mov2textsub        text2movsub
  
  
  
  Enabled indevs:
  
  dv1394            lavfi            v4l2
  
  fbdev            oss
  
  
  
  Enabled outdevs:
  
  fbdev            oss            v4l2
  
  
  
  License: nonfree and unredistributable
  
  Creating config.mak, config.h, and doc/config.texi...
  
  config.h is unchanged
  
  config.asm is unchanged
  
  libavutil/avconfig.h is unchanged

  now i am trying to run make command but getting the following error

  make
  
  POD    doc/ffmpeg.pod
  
  POD    doc/ffprobe.pod
  
  POD    doc/ffserver.pod
  
  POD    doc/ffmpeg-all.pod
  
  POD    doc/ffprobe-all.pod
  
  POD    doc/ffserver-all.pod
  
  MAN    doc/ffmpeg.1
  
  MAN    doc/ffprobe.1
  
  MAN    doc/ffserver.1
  
  MAN    doc/ffmpeg-all.1
  
  MAN    doc/ffprobe-all.1
  
  MAN    doc/ffserver-all.1
  
  LD    ffmpeg_g
  
  libavcodec/libavcodec.a(tiertexseqv.o): In function `seq_decode_op1':
  
  /root/ffmpeg_sources/ffmpeg/libavcodec/tiertexseqv.c:111: undefined reference to `ff_log2_tab'
  
  libavcodec/libavcodec.a(xsubdec.o): In function `decode_frame':
  
  /root/ffmpeg_sources/ffmpeg/libavcodec/xsubdec.c:121: undefined reference to `ff_log2_tab'
  
  libavcodec/libavcodec.a(xsubenc.o): In function `put_xsub_rle':
  
  /root/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
  
  /root/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
  
  /root/ffmpeg_sources/ffmpeg/libavcodec/xsubenc.c:45: undefined reference to `ff_log2_tab'
  
  libavcodec/libavcodec.a(aacps.o):/root/ffmpeg_sources/ffmpeg/libavcodec/aacps.c:196: more undefined references to `ff_log2_tab' follow
  
  collect2: ld returned 1 exit status
  
  make: *** [ffmpeg_g] Error 1

  can anyone help me for it . thank you in advance

• azap from LinuxTV dvb-apps strange signal behavior with Hauppauge WinTV-HVR 950Q [migrated]

  27 février 2012, par mmoment

  What I want to do

  I have a Hauppauge WinTV-HVR 950Q USB-TV-Stick. I want to use this stick to successively tune to and read in a certain live TV stream.

  What I do

  I trigger a scan and save the scan results in a file. I call it channels.conf, like the v4l documentary proposes.

  scan /home/username/Documents/dvb/atsc/us-CA-SF-Bay-Area > /home/username/Documents/dvb/atsc/conf/home_channels.conf

  Everything works fine, the scan returns something like this(A correct channel file) :

  [0003]:503000000:8VSB:49:52:3
  
  [0005]:503000000:8VSB:81:84:5
  
  [0006]:503000000:8VSB:97:100:6
  
  26 San Francisco, CA:551000000:8VSB:49:52:3
  
  26 San Francisco, CA:551000000:8VSB:65:68:4
  
  KTSF-D3:551000000:8VSB:81:84:5
  
  KTSF-D4:551000000:8VSB:97:100:6
  
  KTSF-D5:551000000:8VSB:113:116:7
  
  KTSF-D6:551000000:8VSB:129:132:8
  
  KPIX-DT:563000000:8VSB:49:52:1
  
  KKPX ION:635000000:8VSB:49:52:3
  
  KKPX qubo:635000000:8VSB:65:68:4
  
  IONLife:635000000:8VSB:81:84:5
  
  100:635000000:8VSB:487:488:100
  
  200:635000000:8VSB:417:418:200
  
  201:635000000:8VSB:422:423:201
  
  202:635000000:8VSB:427:428:202
  
  203:635000000:8VSB:432:433:203
  
  204:635000000:8VSB:412:413:204
  
  300:635000000:8VSB:442:443:300
  
  400:635000000:8VSB:457:458:400
  
  KSTS-HD:683000000:8VSB:49:52:3
  
  Telemundo Exitos TV:683000000:8VSB:65:68:4
  
  CNL-SOI:683000000:8VSB:81:84:5
  
  KQEH:689000000:8VSB:49:52:1
  
  KQED:689000000:8VSB:65:68:2
  
  LIFE:689000000:8VSB:81:84:3
  
  KIDS:689000000:8VSB:97:100:4
  
  V-me:689000000:8VSB:113:116:5

  Then I tune to a channel from the scan results. KIDS for example :

  azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS

  What I expect the program to do :

  I expect the program to be tuned and to deliver results similar to this :

  username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
  
  using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
  
  tuning to 689000000 Hz
  
  video pid 0x0061, audio pid 0x0064
  
  
  
  status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00dc | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  ...

  What it does :

  In 2 out of 5 tries the azap just doesn't work at all.

  username@username:~$ azap -r -c Documents/dvb/atsc/conf/channels.conf KIDS
  
  using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
  
  tuning to 689000000 Hz
  
  video pid 0x0061, audio pid 0x0064
  
  
  
  status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 0000 | snr 00e4 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 0000 | snr 00c2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 0000 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  ...

  The rest of the time it generally works initially, then switches the status to 00 and can not be used any more, even if there is incoming signal.

  status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00d2 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00c8 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 1f | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00d2 | snr 00d2 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00dc | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00e6 | snr 00e6 | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  status 00 | signal 00e6 | snr 00dc | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  
  ...

  The output even shows that there is high signal to noise ratio, low or rather no block errors or uncorrected errors at all at first, then it
  This keeps me wondering since I see no reason for the program to switch. After double checking with a real TV I am very sure that I always have an incoming signal and that there should not be any reasons for a behavior like this.

  Question

  Can any of you guys see a reason for this behavior, could it be a problem with the Hardware that I'm using or rather a Software issue ? Did anybody experience the same issues, how did you fix it ? Any help is greatly appreciated !

• How to create a widget – Introducing the Piwik Platform

  4 septembre 2014, par Thomas Steur — Development

  This is the next post of our blog series where we introduce the capabilities of the Piwik platform (our previous post was How to create a scheduled task in Piwik). This time you’ll learn how to create a new widget. For this tutorial you will need to have basic knowledge of PHP.

  What is a widget in Piwik ?

  Widgets can be added to your dashboards or exported via a URL to embed it on any page. Most widgets in Piwik represent a report but a widget can display anything. For instance a RSS feed of your corporate news. If you prefer to have most of your business relevant data in one dashboard why not display the number of offline sales, the latest stock price, or other key metrics together with your analytics data ?

  Getting started

  In this series of posts, we assume that you have already set up your development environment. If not, visit the Piwik Developer Zone where you’ll find the tutorial Setting up Piwik.

  To summarize the things you have to do to get setup :

  • Install Piwik (for instance via git).
  • Activate the developer mode : ./console development:enable --full.
  • Generate a plugin : ./console generate:plugin --name="MyWidgetPlugin". There should now be a folder plugins/MyWidgetPlugin.
  • And activate the created plugin under Settings => Plugins.

  Let’s start creating a widget

  We start by using the Piwik Console to create a widget template :

  ./console generate:widget

  The command will ask you to enter the name of the plugin the widget should belong to. I will simply use the above chosen plugin name “MyWidgetPlugin”. It will ask you for a widget category as well. You can select any existing category, for instance “Visitors”, “Live !” or “Actions”, or you can define a new category, for instance your company name. There should now be a file plugins/MyWidgetPlugin/Widgets.php which contains already some examples to get you started easily :

  class Widgets extends \Piwik\Plugin\Widgets
  {
      /**
       * Here you can define the category the widget belongs to. You can reuse any existing widget category or define your own category.
       * @var string
       */
      protected $category = 'ExampleCompany';
   
      /**
       * Here you can add one or multiple widgets. You can add a widget by calling the method "addWidget()" and pass the name of the widget as well as a method name that should be called to render the widget. The method can be defined either directly here in this widget class or in the controller in case you want to reuse the same action for instance in the menu etc.
       */
      protected function init()
      {
          $this->addWidget('Example Widget Name', $method = 'myExampleWidget');
          $this->addWidget('Example Widget 2',    $method = 'myExampleWidget', $params = array('myparam' => 'myvalue'));
      }
   
      /**
       * This method renders a widget as defined in "init()". It's on you how to generate the content of the widget. As long as you return a string everything is fine. You can use for instance a "Piwik\View" to render a twig template. In such a case don't forget to create a twig template (eg. myViewTemplate.twig) in the "templates" directory of your plugin.
       *
       * @return string
       */
      public function myExampleWidget()
      {
          $view = new View('@MyWidgetPlugin/myViewTemplate');
          return $view->render();
      }
  }
  Télécharger

  As you might have noticed in the generated template we put emphasis on adding comments to explain you directly how to continue and where to get more information. Ideally this saves you some time and you don’t even have to search for more information on our developer pages. The category is defined in the property $category and can be changed at any time. Starting from Piwik 2.6.0 the generator will directly create a translation key if necessary to make it easy to translate the category into any language. Translations will be a topic in one of our future posts until then you can explore this feature on our Internationalization guide.

  A simple example

  We can define one or multiple widgets in the init method by calling addWidget($widgetName, $methodName). To do so we define the name of a widget which will be seen by your users as well as the name of the method that shall render the widget.

  protected $category = 'Example Company';
  
  
  
  public function init()
  
  {
  
      // Registers a widget named 'News' under the category 'Example Company'. 
  
      // The method 'myCorporateNews' will be used to render the widget.
  
      $this->addWidget('News', $method = 'myCorporateNews'); 
  
  }
  
  
  
  public function myCorporateNews()
  
  {
  
      return file_get_contents('http://example.com/news');
  
  }

  This example would display the content of the specified URL within the widget as defined in the method myCorporateNews. It’s on you how to generate the content of the widget. Any string returned by this method will be displayed within the widget. You can use for example a View to render a Twig template. For simplification we are fetching the content from another site. A more complex version would cache this content for faster performance. Caching and views will be covered in one of our future posts as well.

  

  Did you know ? To make your life as a developer as stress-free as possible the platform checks whether the registered method actually exists and whether the method is public. If not, Piwik will display a notification in the UI and advice you with the next step.

  Checking permissions

  Often you do not want to have the content of a widget visible to everyone. You can check for permissions by using one of our many convenient methods which all start with \Piwik\Piwik::checkUser*. Just to introduce some of them :

  // Make sure the current user has super user access
  
  \Piwik\Piwik::checkUserHasSuperUserAccess(); 
  
  
  
  // Make sure the current user is logged in and not anonymous
  
  \Piwik\Piwik::checkUserIsNotAnonymous(); 

  And here is an example how you can use it within your widget :

  public function myCorporateNews()
  
  {
  
      // Make sure there is an idSite URL parameter
  
      $idSite = Common::getRequestVar('idSite', null, 'int');
  
  
  
      // Make sure the user has at least view access for the specified site. This is useful if you want to display data that is related to the specified site.
  
      Piwik::checkUserHasViewAccess($idSite); 
  
  
  
      $siteUrl = \Piwik\Site::getMainUrlFor($idSite);
  
  
  
      return file_get_contents($siteUrl . '/news');
  
  }

  In case any condition is not met an exception will be thrown and an error message will be presented to the user explaining that he does not have enough permissions. You’ll find the documentation for those methods in the Piwik class reference.

  How to test a widget

  After you have created your widgets you are surely wondering how to test it. First, you should write a unit or integration test which we will cover in one of our future blog posts. Just one hint : You can use the command ./console generate:test to create a test. To manually test a widget you can add a widget to a dashboard or export it.

  Publishing your Plugin on the Marketplace

  In case you want to share your widgets with other Piwik users you can do this by pushing your plugin to a public GitHub repository and creating a tag. Easy as that. Read more about how to distribute a plugin.

  Advanced features

  Isn’t it easy to create a widget ? We never even created a file ! Of course, based on our API design principle “The complexity of our API should never exceed the complexity of your use case.” you can accomplish more if you want : You can clarify parameters that will be passed to your widget, you can create a method in the Controller instead of the Widget class to make the same method also reusable for adding it to the menu, you can assign different categories to different widgets, you can remove any widgets that were added by the Piwik core or other plugins and more.

  Would you like to know more about widgets ? Go to our Widgets class reference in the Piwik Developer Zone.

  If you have any feedback regarding our APIs or our guides in the Developer Zone feel free to send it to us.