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• Announcing our latest open source project : DeviceDetector

  30 juillet 2014, par Stefan Giehl — Community, Development, Meta, DeviceDetector

  This blog post is an announcement for our latest open source project release : DeviceDetector ! The Universal Device Detection library will parse any User Agent and detect the browser, operating system, device used (desktop, tablet, mobile, tv, cars, console, etc.), brand and model.

  Read on to learn more about this exciting release.

  Why did we create DeviceDetector ?

  Our previous library UserAgentParser only had the possibility to detect operating systems and browsers. But as more and more traffic is coming from mobile devices like smartphones and tablets it is getting more and more important to know which devices are used by the websites visitors.

  To ensure that the device detection within Piwik will gain the required attention, so it will be as accurate as possible, we decided to move that part of Piwik into a separate project, that we will maintain separately. As an own project we hope the DeviceDetector will gain a better visibility as well as a better support by and for the community !

  DeviceDetector is hosted on GitHub at piwik/device-detector. It is also available as composer package through Packagist.

  How DeviceDetector works

  Every client requesting data from a webserver identifies itself by sending a so-called User-Agent within the request to the server. Those User Agents might contain several information such as :

  • client name and version (clients can be browsers or other software like feed readers, media players, apps,…)
  • operating system name and version
  • device identifier, which can be used to detect the brand and model.

  For Example :

  Mozilla/5.0 (Linux; Android 4.4.2; Nexus 5 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.99 Mobile Safari/537.36

  This User Agent contains following information :

  Operating system is Android 4.4.2, client uses the browser Chrome Mobile 32.0.1700.99 and the device is a Google Nexus 5 smartphone.

  What DeviceDetector currently detects

  DeviceDetector is able to detect bots, like search engines, feed fetchers, site monitors and so on, five different client types, including around 100 browsers, 15 feed readers, some media players, personal information managers (like mail clients) and mobile apps using the AFNetworking framework, around 80 operating systems and nine different device types (smartphones, tablets, feature phones, consoles, tvs, car browsers, cameras, smart displays and desktop devices) from over 180 brands.

  Note : Piwik itself currently does not use the full feature set of DeviceDetector. Client detection is currently not implemented in Piwik (only detected browsers are reported, other clients are marked as Unknown). Client detection will be implemented into Piwik in the future, follow #5413 to stay updated.

  Performance of DeviceDetector

  Our detections are currently handled by an enormous number of regexes, that are defined in several .YML Files. As parsing these .YML files is a bit slow, DeviceDetector is able to cache the parsed .YML Files. By default DeviceDetector uses a static cache, which means that everything is cached in static variables. As that only improves speed for many detections within one process, there are also adapters to cache in files or memcache for speeding up detections across requests.

  How can users help contribute to DeviceDetector ?

  Submit your devices that are not detected yet

  If you own a device, that is currently not correctly detected by the DeviceDetector, please create a issue on GitHub
  In order to check if your device is detected correctly by the DeviceDetector go to your Piwik server, click on ‘Settings’ link, then click on ‘Device Detection’ under the Diagnostic menu. If the data does not match, please copy the displayed User Agent and use that and your device data to create a ticket.

  Submit a list of your User Agents

  In order to create new detections or improve the existing ones, it is necessary for us to have lists of User Agents. If you have a website used by mostly non desktop devices it would be useful if you send a list of the User Agents that visited your website. To do so you need access to your access logs. The following command will extract the User Agents :

  zcat ~/path/to/access/logs* | awk -F'"' '{print $6}' | sort | uniq -c | sort -rn | head -n20000 > /home/piwik/top-user-agents.txt

  If you want to help us with those data, please get in touch at devicedetector@piwik.org

  Submit improvements on GitHub

  As DeviceDetector is free/libre library, we invite you to help us improving the detections as well as the code. Please feel free to create tickets and pull requests on Github.

  What’s the next big thing for DeviceDetector ?

  Please check out the list of issues in device-detector issue tracker.

  We hope the community will answer our call for help. Together, we can build DeviceDetector as the most powerful device detection library !

  Happy Device Detection,

• Unable to 'make' android ndk project - build fails : [build-openh264-x86] Error 2

  18 décembre 2015, par NoobNinja

  I’ve attempted these two fixes I’ve found while researching the issue :

  android update project  --23 --/Users/ajswann/Downloads/android-sdk-macosx 
  
  
  
  make OS=android NDKROOT=/Users/ajswann/Downloads/android-sdk-macosx TARGET=android-19 ARCH=x86 clean

  ...however neither seems to resolve the issue.

  Any input/suggestions are appreciated.

  P.S.

  I’m running OSX - could this be an issue with attempting to run an x86 architecture on a 64 bit machine ?

  Error Message :

  chris-mini-mac:linphone-android ajswann$ sudo make
  
  ls: /opt/local/etc/openssl/certs: No such file or directory
  
  /Users/ajswann/Downloads/android-sdk-macosx/tools/android update project --path . --target android-23
  
  Updated project.properties
  
  Updated local.properties
  
  build.xml: Found version-tag: custom. File will not be updated.
  
  Updated file ./proguard-project.txt
  
  It seems that there are sub-projects. If you want to update them
  
  please use the --subprojects parameter.
  
  /Users/ajswann/Downloads/android-sdk-macosx/tools/android update test-project --path tests -m .
  
  Resolved location of main project to: /groupchat/linphone-android/tests
  
  Updated project.properties
  
  Updated local.properties
  
  Updated file tests/proguard-project.txt
  
  Updated ant.properties
  
  /Users/ajswann/Downloads/android-sdk-macosx/tools/android update project --path liblinphone_tester --target android-23
  
  Updated project.properties
  
  Updated local.properties
  
  Updated file liblinphone_tester/proguard-project.txt
  
  ant -e -S clean
  
  Buildfile: /groupchat/linphone-android/build.xml
  
  No sub-builds to iterate on
  
  mkdir -p /groupchat/linphone-android/submodules/externals/openh264/include/wels
  
  rsync -rvLpgoc --exclude ".git"  /groupchat/linphone-android/submodules/externals/openh264/codec/api/svc/* /groupchat/linphone-android/submodules/externals/openh264/include/wels/.
  
  building file list ... done
  
  
  
  sent 156 bytes  received 20 bytes  352.00 bytes/sec
  
  total size is 56216  speedup is 319.41
  
  mkdir -p /groupchat/linphone-android/submodules/externals/build/openh264
  
  mkdir -p /groupchat/linphone-android/submodules/externals/build/openh264/arm
  
  cd /groupchat/linphone-android/submodules/externals/build/openh264/arm \
  
      && rsync -rvLpgoc --exclude ".git"  /groupchat/linphone-android/submodules/externals/openh264/* .
  
  building file list ... done
  
  
  
  sent 18841 bytes  received 20 bytes  37722.00 bytes/sec
  
  total size is 48272799  speedup is 2559.40
  
  cd /groupchat/linphone-android/submodules/externals/build/openh264/arm && \
  
      make libraries -j4 OS=android ARCH=arm NDKROOT=/Users/ajswann/Downloads/android-ndk-r10e TARGET=android-19
  
  cd ./ && sh ./codec/common/generate_version.sh
  
  Keeping existing codec/common/inc/version_gen.h
  
  mkdir -p /groupchat/linphone-android/submodules/externals/build/openh264
  
  mkdir -p /groupchat/linphone-android/submodules/externals/build/openh264/x86
  
  cd /groupchat/linphone-android/submodules/externals/build/openh264/x86 \
  
      && rsync -rvLpgoc --exclude ".git"  /groupchat/linphone-android/submodules/externals/openh264/* .
  
  building file list ... done
  
  
  
  sent 18841 bytes  received 20 bytes  12574.00 bytes/sec
  
  total size is 48272799  speedup is 2559.40
  
  cd /groupchat/linphone-android/submodules/externals/build/openh264/x86 && \
  
      make libraries -j4 OS=android ARCH=x86 NDKROOT=/Users/ajswann/Downloads/android-ndk-r10e TARGET=android-19
  
  cd ./ && sh ./codec/common/generate_version.sh
  
  nasm -DX86_32 -f elf -I./codec/common/x86/   -o codec/decoder/core/x86/dct.o codec/decoder/core/x86/dct.asm
  
  codec/decoder/core/x86/dct.asm:1: error: label or instruction expected at start of line
  
  codec/decoder/core/x86/dct.asm:144: error: label or instruction expected at start of line
  
  codec/decoder/core/x86/dct.asm:234: error: symbol `IdctResAddPred_mmx' redefined
  
  codec/decoder/core/x86/dct.asm:262: error: symbol `WelsBlockZero16x16_sse2' redefined
  
  codec/decoder/core/x86/dct.asm:276: error: symbol `WelsBlockZero8x8_sse2' redefined
  
  codec/decoder/core/x86/dct.asm:287: error: label or instruction expected at start of line
  
  make[1]: *** [codec/decoder/core/x86/dct.o] Error 1
  
  make[1]: *** Waiting for unfinished jobs....
  
  Keeping existing codec/common/inc/version_gen.h
  
  make[1]: *** wait: No child processes.  Stop.
  
  make: *** [build-openh264-x86] Error 2

  Source Repository (I simply clone it, add the platform-tools and tools folder from my android-sdk and run ’make’ and I get this error) :

  https://github.com/TheBaobabTeam/linphone-android

• Unable to integrate ffmpeg as a native dependency for an Android NDK project

  24 avril 2016, par mmark

  I have an Android NDK project which consists entirely of C/C++ code, and it basically processes images without using any external libraries.

  I’m using Android Studio + Gradle NDK Experimental plugin (0.7.0-alpha1).

  Now, I need to integrate ffmpeg as a native library to use it from the C/C++ code in order to decode a H.264 video frame.

  These are the questions I’ve found here regarding this issue :

  Android - Integrating ffmpeg and android-ndk-r9c

  Android NDK w/ ffmpeg library - error running project

  Using FFmpeg native libraries with Android-NDK

  Can not build with prebuilt static libraries using gradle-experimental

  Here is my build.gradle file :

  apply plugin: 'com.android.model.application'
  
  
  
  def ffmpeg_path = file(project(':ffmpeg').projectDir).absolutePath + "/ffmpeg-android"
  
  
  
  model {
  
  
  
      repositories {
  
          libs(PrebuiltLibraries) {
  
              libavcodec {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavcodec.a")
  
                  }
  
              }
  
              libavutil {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavutil.a")
  
                  }
  
              }
  
              libswresample {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libswresample.a")
  
                  }
  
              }
  
              libswscale {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libswscale.a")
  
                  }
  
              }
  
              libavformat {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavformat.a")
  
                  }
  
              }
  
              libavdevice {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavdevice.a")
  
                  }
  
              }
  
              libavfilter {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libavfilter.a")
  
                  }
  
              }
  
              libpostproc {
  
                  headers.srcDir "${ffmpeg_path}/include"
  
                  binaries.withType(StaticLibraryBinary) {
  
                      staticLibraryFile = file("${ffmpeg_path}/${targetPlatform.getName()}/lib/libpostproc.a")
  
                  }
  
              }
  
          }
  
      }
  
  
  
      android {
  
          compileSdkVersion = 23
  
          buildToolsVersion = "23.0.2"
  
  
  
          defaultConfig.with {
  
              applicationId = "com.example.hellojni"
  
              minSdkVersion.apiLevel = 4
  
              targetSdkVersion.apiLevel = 23
  
          }
  
      }
  
  
  
      /*
  
       * native build settings
  
       */
  
      android.ndk {
  
          moduleName = "hello-jni"
  
          platformVersion = 9 //same as minSdkVersion.apiLevel for better compatibility
  
          stl    = "c++_static"
  
          abiFilters.addAll(["armeabi", "armeabi-v7a", "x86"]) //filtering ABIs on the ones Google Play Games library is compatible with.
  
      }
  
      android.buildTypes {
  
          release {
  
              minifyEnabled = false
  
              proguardFiles.add(file('proguard-rules.txt'))
  
          }
  
      }
  
  
  
      android.sources {
  
          main {
  
              jni {
  
                  dependencies {
  
                      library "libavcodec" linkage "static"
  
                      library "libavutil" linkage "static"
  
                      library "libswresample" linkage "static"
  
                      library "libswscale" linkage "static"
  
                      library "libavformat" linkage "static"
  
                      library "libavdevice" linkage "static"
  
                      library "libavfilter" linkage "static"
  
                      library "libpostproc" linkage "static"
  
                  }
  
              }
  
          }
  
      }
  
  
  
  }

  I based on this sample from Google which integrates an external native library.

  This is the ffmpeg project I compiled before importing it into mine :
  https://github.com/WritingMinds/ffmpeg-android

  I’ve added all the .a and .h files and I’m able to import the headers in my C/C++ code, but when I try to compile it I get the following error :

  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function try_decode_frame: error: undefined reference to 'avpriv_h264_has_num_reorder_frames'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function compute_pkt_fields: error: undefined reference to 'avpriv_h264_has_num_reorder_frames'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function parse_packet: error: undefined reference to 'av_parser_parse2'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function parse_packet: error: undefined reference to 'av_parser_close'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function read_frame_internal: error: undefined reference to 'av_parser_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function avformat_find_stream_info: error: undefined reference to 'av_parser_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function avformat_find_stream_info: error: undefined reference to 'avcodec_pix_fmt_to_codec_tag'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function avformat_find_stream_info: error: undefined reference to 'avpriv_get_raw_pix_fmt_tags'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function ff_stream_add_bitstream_filter: error: undefined reference to 'av_bitstream_filter_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function ff_stream_add_bitstream_filter: error: undefined reference to 'av_bitstream_filter_close'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(utils.o):utils.c:function av_apply_bitstream_filters: error: undefined reference to 'av_bitstream_filter_filter'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_packet: error: undefined reference to 'av_tea_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_packet: error: undefined reference to 'av_tea_crypt'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_header: error: undefined reference to 'av_tea_alloc'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_header: error: undefined reference to 'av_tea_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(aadec.o):aadec.c:function aa_read_header: error: undefined reference to 'av_tea_crypt'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(ac3dec.o):ac3dec.c:function ac3_eac3_probe.isra.0: error: undefined reference to 'avpriv_ac3_parse_header'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(adtsenc.o):adtsenc.c:function adts_write_header: error: undefined reference to 'avpriv_mpeg4audio_get_config'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(adtsenc.o):adtsenc.c:function adts_write_header: error: undefined reference to 'avpriv_copy_pce_data'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_alloc'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_crypt'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_init'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(asfcrypt.o):asfcrypt.c:function ff_asfcrypt_dec: error: undefined reference to 'av_rc4_crypt'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(matroska.o):matroska.c:function ff_mkv_stereo3d_conv: error: undefined reference to 'av_stereo3d_alloc'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_add_sp: error: undefined reference to 'av_tree_node_alloc'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_add_sp: error: undefined reference to 'av_tree_insert'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_free_sp: error: undefined reference to 'av_tree_enumerate'
  
  /Users/marcos/Documents/Android/fdecoder/ffmpeg/ffmpeg-android/armeabi-v7a/lib/libavformat.a(nut.o):nut.c:function ff_nut_free_sp: error: undefined reference to 'av_tree_destroy'
  
  Error:error: ld returned 1 exit status
  
  Error:Execution failed for task ':app:linkHello-jniArmeabi-v7aDebugSharedLibrary'.
  
  > A build operation failed.
  
        Linker failed while linking libhello-jni.so.
  
    See the complete log at: file:///Users/marcos/Documents/Android/fdecoder/app/build/tmp/linkHello-jniArmeabi-v7aDebugSharedLibrary/output.txt
  
  Information:BUILD FAILED
  
  Information:Total time: 14.993 secs
  
  Information:2 errors
  
  Information:0 warnings
  
  Information:See complete output in console

  There’s obviously something I’m not importing properly, but can’t figure exactly what’s missing.