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• Piwik is now Matomo – Announcement

  
  9 janvier 2018, par Matomo Core Team

  You may be surprised to read this announcement, but no stress, take a deep breath, nothing big is going to happen, it is just our name that is changing and here are the reasons why.

  

  Why are we changing from Piwik to Matomo ?

  “After an epic 10 year journey creating and perfecting the best open digital analytics solution, we felt it was a good time to refresh our brand to reflect how far we have come and to reaffirm our vision :
  To create, as a community, the leading international open source digital analytics platform, that gives every user full control of their data.”

  Matthieu Aubry, creator of Piwik

  As projects evolve, so do names. After 10 years of Piwik and the amazing achievement of building the top open source analytics software that gives every user full control of their data, we are now looking forward to the next chapter. Thus, Piwik, the community project, will now become Matomo. The only change is our name, everything else stays the same.

  This will allow users to take a fresh look at what we’ve become today and acknowledging all of the community’s hard work over the past 10 years. In addition, we also want our name to be unique, ensuring that it is not shared with any other company to remove any possible confusion or affiliations. Piwik is already used on over 1 million websites and with Matomo, we hope to reach our maximum potential.

  With the strong focus on privacy worldwide and the upcoming privacy regulations about to be legislated in Europe, it is clear that we were on the right mission from the very beginning. With the upcoming big release Matomo 4.0 planned for this year, new privacy protections will bring users the tools to be compliant with the GDPR privacy laws. And Matomo will grow in line with these regulations, with a very clear and focused vision.

  Changing our name is an exciting opportunity for us, and we hope you love the name Matomo as much as we do.

  Matomo FAQs

  So what is going to change for me ?

  Well, basically nothing, the name will change but the values stay the same : Matomo (Piwik) will continue to be free and always will be.

  Also the same people stay behind the project. We are motivated more than ever to take this project to the next level.

  Why not keep the name Piwik ?

  For a few reasons, one of which is to ensure that Matomo does not/will not share its name with any other businesses unlike Piwik. We also want to protect the Matomo brand and for it to remain the open source community project name forever.

  Where does the name Matomo come from ?

  We loved the name Piwik and were looking for something that sounded just as good ! Initially we wanted to have an acronym based on key terms, such as Free, Open Source and Privacy, but none really fit us perfectly.

  Until we found Matomo ! Easily pronounced in all languages. Short enough to remember. Concise. And best of all… Matomo means honesty in Japanese. Which aligns with one of our key values – transparency.

  We love the name Matomo and hope you do too.

  What is the vision of Matomo ?

  

  We have come a long way in those 10 years ! However, our mission statement remains the same :

  “To create, as a community, the leading international open source digital analytics platform, that gives every user full control of their data.”

  Matomo provides a range of amazing and innovative features, allowing you to get a 360 view of your visitors. These insights are invaluable to help understand behavior, keep track of goals, and increase conversion rates and revenue.

  Who will deliver Matomo professional services ?

  Any company who wishes to. The only exception is that no companies will be allowed to have the name Matomo.

  Our company providing professional services is and will remain InnoCraft.

  Where can I follow the Matomo project ?

  Our new website will be matomo.org (automatically redirected from Piwik.org)

  Follow our new Twitter : twitter.com/matomo_org

  Github : github.com/matomo-org

  Facebook : facebook.com/Matomo.org

  Linkedin : linkedin.com/company/matomo/

  If you are already following us on social media, you will be kept up to date with Matomo automatically as all social media accounts will be redirected.

  How should I pronounce Matomo ?

  If you’re wondering how to say ‘Matomo’, you can find out by clicking play :

  Where can I see a demo of Matomo ?

  On demo.matomo.org

  Where can I download Matomo first release ?

  On matomo.org/download

  (Matomo 3.3.0 will be released in the next few days)

  What is the new logo ?

  Check it out below.

  

  Matomo trademark Policy

  Matomo is an internationally registered trademark of Matthieu Aubry, Founder of Piwik (now Matomo).

  Information about how to use the name Matomo (and logo) can be found here : matomo.org/trademark/

  What are the next big steps ?

  We will keep it simple for our valued users. As it is just a name change, the only thing you will notice is that the Piwik brand will gradually be replaced on the websites you are used to seeing the name on. The first version of Matomo will be available in just a few days for download. The software version numbers stay the same : the next release after Piwik 3.2.1 will be Matomo 3.3.0.

  All our public HTTP APIs and Tracking SDKs will continue working normally. As you can imagine, there is a lot of work and complexity behind slowly updating all the SDKs and keeping backwards compatibility, so our renaming project will take a few weeks to complete.

  The Matomo trademark will later be transferred into the Matomo foundation, a non-profit that will be dedicated to promoting and ensuring access to Matomo and our related open source projects in perpetuity.

  ---

  Thank you

  Thank you for continuing to support our project, alongside our 20+ Matomo core team members and more than 500 contributors.

  Please help to spread the word about this announcement by sharing it with friends or or colleagues who may benefit from using Matomo Analytics !

  The post Piwik is now Matomo – Announcement appeared first on Analytics Platform - Matomo.

• Updating SDL yuv Texture

  15 juin 2015, par madprogrammer2015

  I am receiving an H.264 video stream and successfully decoding it with FFMPEG. It can display the first frame of data but then after that the screen never updates. It just appears to become a static image. I am using YUV pixel format, and I am receiving it in that format as well. Also I am using SDL_UpdateYUVTexture().

  Here is my code :

  int main()
  
  {
  
      WORD wVersionRequested;
  
      WSADATA wsaData;
  
      int wsaerr;
  
  
  
      if (SDL_Init(SDL_INIT_EVERYTHING)) {
  
          fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
  
          exit(1);
  
      }
  
  
  
      // Using MAKEWORD macro, Winsock version request 2.2
  
      wVersionRequested = MAKEWORD(2, 2);
  
  
  
      wsaerr = WSAStartup(wVersionRequested, &wsaData);
  
  
  
      if (wsaerr != 0)
  
      {
  
          /* Tell the user that we could not find a usable */
  
          /* WinSock DLL.*/
  
          printf("The Winsock dll not found!\n");
  
          return 0;
  
      }
  
      else
  
      {
  
          printf("The Winsock dll found!\n");
  
          printf("The status: %s.\n", wsaData.szSystemStatus);
  
      }
  
  
  
      /* Confirm that the WinSock DLL supports 2.2.*/
  
      /* Note that if the DLL supports versions greater    */
  
      /* than 2.2 in addition to 2.2, it will still return */
  
      /* 2.2 in wVersion since that is the version we      */
  
      /* requested.                                        */
  
      if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2)
  
      {
  
          /* Tell the user that we could not find a usable */
  
          /* WinSock DLL.*/
  
          printf("The dll do not support the Winsock version %u.%u!\n", LOBYTE(wsaData.wVersion), HIBYTE(wsaData.wVersion));
  
          WSACleanup();
  
          return 0;
  
      }
  
      else
  
      {
  
          printf("The dll supports the Winsock version %u.%u!\n", LOBYTE(wsaData.wVersion), HIBYTE(wsaData.wVersion));
  
          printf("The highest version this dll can support: %u.%u\n", LOBYTE(wsaData.wHighVersion), HIBYTE(wsaData.wHighVersion));
  
      }
  
  
  
      ULONG              localif;
  
      /*INT Ret;
  
      HANDLE ThreadHandle;
  
      DWORD ThreadId;
  
      WSAEVENT AcceptEvent;
  
      char               buf[1024];
  
      int                buflen = 1024, rc, err;*/
  
  
  
      SOCKET s;
  
      SOCKET ns;
  
      SOCKADDR_IN        multi, safrom;
  
      int fromlen;
  
  
  
      int totalSize = 0;
  
  
  
      AVCodec *codec;
  
      AVCodecContext *codecContext;
  
      int frame;
  
      int got_picture;
  
      AVFrame *picture;
  
      AVPacket packet;
  
      SwsContext* convertContext;
  
      uint16_t i = 1;
  
      //std::queue<madproto> queue;
  
      //std::list<madproto> list;
  
      AVCodecParserContext *parser;
  
      std::vector buffer;
  
      //moodycamel::ConcurrentQueue<madproto> protoQueue;
  
  
  
      SDL_Window *window;
  
      SDL_Renderer *renderer;
  
      SDL_Texture *bmp;
  
      SDL_Rect rect;
  
  
  
      file.open("log.txt");
  
  
  
      s = socket(AF_INET, SOCK_STREAM, IPPROTO_RM);
  
  
  
      multi.sin_family = AF_INET;
  
      multi.sin_port = htons(5150);
  
      multi.sin_addr.s_addr = inet_addr("234.5.6.7");
  
      int bindResult = bind(s, (PSOCKADDR)&amp;multi, sizeof(multi));
  
  
  
      if (bindResult &lt; 0)
  
      {
  
          std::cout &lt;&lt; "bindResult: " &lt;&lt; WSAGetLastError() &lt;&lt; std::endl;
  
      }
  
  
  
      listen(s, 10);
  
  
  
      //if ((AcceptEvent = WSACreateEvent()) == WSA_INVALID_EVENT)
  
      //{
  
      //  printf("WSACreateEvent() failed with error %d\n", WSAGetLastError());
  
      //  return 1;
  
      //}
  
      //else
  
      //  printf("WSACreateEvent() is OK!\n");
  
  
  
      //// Create a worker thread to service completed I/O requests
  
      //if ((ThreadHandle = CreateThread(NULL, 0, WorkerThread, (LPVOID)AcceptEvent, 0, &amp;ThreadId)) == NULL)
  
      //{
  
      //  printf("CreateThread() failed with error %d\n", GetLastError());
  
      //  return 1;
  
      //}
  
      //else
  
      //  printf("CreateThread() should be fine!\n");
  
  
  
      localif = inet_addr("192.168.1.2");
  
      setsockopt(s, IPPROTO_RM, RM_ADD_RECEIVE_IF, (char *)&amp;localif, sizeof(localif));
  
  
  
      fromlen = sizeof(safrom);
  
      ns = accept(s, (SOCKADDR *)&amp;safrom, &amp;fromlen);
  
  
  
      closesocket(s);  // Don't need to listen anymore
  
  
  
      std::string received;
  
  
  
      av_register_all();
  
  
  
      int horizontal = 0;
  
      int vertical = 0;
  
  
  
      GetDesktopResolution(horizontal, vertical);
  
  
  
      codec = avcodec_find_decoder(CODEC_ID_H264);
  
      if (!codec) {
  
          std::cout &lt;&lt; "codec not found" &lt;&lt; std::endl;
  
          std::cin.get();
  
      }
  
  
  
      codecContext = avcodec_alloc_context3(codec);
  
  
  
      /*if (codec->capabilities &amp; CODEC_CAP_TRUNCATED)
  
          codecContext->flags |= CODEC_FLAG_TRUNCATED;*/
  
  
  
      //codecContext->flags |= CODEC_FLAG_LOW_DELAY;
  
      codecContext->flags2 |= CODEC_FLAG2_CHUNKS;
  
  
  
      codecContext->width = horizontal;
  
      codecContext->height = vertical;
  
      codecContext->codec_id = CODEC_ID_H264;
  
      codecContext->codec_type = AVMEDIA_TYPE_VIDEO;
  
      codecContext->pix_fmt = PIX_FMT_YUV420P;
  
      codecContext->thread_type = 0;
  
  
  
      if (avcodec_open2(codecContext, codec, NULL) &lt; 0) {
  
          std::cout &lt;&lt; "could not open codec" &lt;&lt; std::endl;
  
          std::cin.get();
  
      }
  
  
  
      convertContext = sws_getContext(
  
          codecContext->width,
  
          codecContext->height,
  
          PIX_FMT_RGB32,
  
          codecContext->width,
  
          codecContext->height,
  
          PIX_FMT_YUV420P,
  
          SWS_BICUBIC,
  
          NULL,
  
          NULL,
  
          NULL
  
          );
  
  
  
      parser = av_parser_init(CODEC_ID_H264);
  
  
  
      picture = av_frame_alloc();
  
  
  
      if (ns == INVALID_SOCKET)
  
      {
  
          std::cout &lt;&lt; "accept didn't work!" &lt;&lt; std::endl;
  
          std::cin.get();
  
      }
  
  
  
      /*if (WSASetEvent(AcceptEvent) == FALSE)
  
      {
  
          printf("WSASetEvent() failed with error %d\n", WSAGetLastError());
  
          return 1;
  
      }
  
      else
  
          printf("WSASetEvent() should be working!\n");*/
  
  
  
      window = SDL_CreateWindow("YUV", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, codecContext->width, codecContext->height, SDL_WINDOW_SHOWN);
  
      renderer = SDL_CreateRenderer(window, -1, 0);
  
      bmp = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_IYUV, SDL_TEXTUREACCESS_STREAMING, codecContext->width, codecContext->height);
  
  
  
      //receive = SDL_CreateThread(receiveThread, "ReceiveThread", (void *)NULL);
  
      bool quit = false;
  
  
  
      rect.x = 0;
  
      rect.y = 0;
  
      rect.w = codecContext->width;
  
      rect.h = codecContext->height;
  
  
  
      while (!quit)
  
      {
  
          while (true)
  
          {
  
              MadProto proto;
  
              int result = recvfrom(ns, (char *)&amp;proto, sizeof(MadProto), 0, (struct sockaddr *)&amp;multi, &amp;fromlen);
  
  
  
              if (result &lt; 0)
  
              {
  
                  std::cout &lt;&lt; "receive failed! error: " &lt;&lt; WSAGetLastError() &lt;&lt; std::endl;
  
                  break;
  
              }
  
              else
  
              {
  
                  std::cout &lt;&lt; "receive successful, received " &lt;&lt; result &lt;&lt; " bytes" &lt;&lt; std::endl;
  
  
  
                  if (ntohs(proto.frame_end) == 1)
  
                  {
  
                      uint8_t *outbuffer = NULL;
  
                      int outBufSize = 0;
  
                      int rc = av_parser_parse2(parser, codecContext, &amp;outbuffer, &amp;outBufSize, buffer.data(), buffer.size(), 0, 0, 0);
  
  
  
                      if (outBufSize &lt;= 0)
  
                      {
  
                          std::cout &lt;&lt; "parsing failed!" &lt;&lt; std::endl;
  
                          std::cout &lt;&lt; "outBufSize: " &lt;&lt; outBufSize &lt;&lt; std::endl;
  
                          break;
  
                      }
  
  
  
                      if (rc)
  
                      {
  
                          std::cout &lt;&lt; "rc: " &lt;&lt; rc &lt;&lt; std::endl;
  
                          std::cout &lt;&lt; "parsing successful!" &lt;&lt; std::endl;
  
                          //std::cin.get();
  
  
  
                          av_init_packet(&amp;packet);
  
                          packet.size = outBufSize;
  
                          packet.data = outbuffer;
  
  
  
                          frame = avcodec_decode_video2(codecContext, picture, &amp;got_picture, &amp;packet);
  
  
  
                          if (frame &lt; 0)
  
                          {
  
                              std::cout &lt;&lt; "decoding was unsuccessful!" &lt;&lt; std::endl;
  
                              break;
  
                          }
  
  
  
                          if (got_picture)
  
                          {
  
                              std::cout &lt;&lt; "decoding was successful!" &lt;&lt; std::endl;
  
                              std::cout &lt;&lt; "decoded length was: " &lt;&lt; frame &lt;&lt; std::endl;
  
                              buffer.empty();
  
  
  
                              //std::cin.get();
  
                              int code = SDL_UpdateYUVTexture(bmp, NULL, picture->data[0], picture->linesize[0],
  
                                  picture->data[1], picture->linesize[1],
  
                                  picture->data[2], picture->linesize[2]);
  
  
  
                              if (code &lt; 0)
  
                              {
  
                                  std::cout &lt;&lt; "unable to update texture " &lt;&lt; SDL_GetError() &lt;&lt; std::endl;
  
                                  std::cin.get();
  
                              }
  
  
  
                              code = SDL_RenderClear(renderer);
  
  
  
                              if (code &lt; 0)
  
                              {
  
                                  std::cout &lt;&lt; "renderer clear failed " &lt;&lt; SDL_GetError() &lt;&lt; std::endl;
  
                                  std::cin.get();
  
                              }
  
  
  
                              code = SDL_RenderCopy(renderer, bmp, NULL, &amp;rect);
  
  
  
                              if (code &lt; 0)
  
                              {
  
                                  std::cout &lt;&lt; "renderer copy failed " &lt;&lt; SDL_GetError() &lt;&lt; std::endl;
  
                                  std::cin.get();
  
                              }
  
  
  
                              SDL_RenderPresent(renderer);
  
  
  
                              SDL_Delay(40);
  
                          }
  
  
  
                          av_free_packet(&amp;packet);
  
                      }
  
                  }
  
                  else
  
                  {
  
                      std::copy(proto.payload, proto.payload + ntohs(proto.nal_length), std::back_inserter(buffer));
  
                      std::cout &lt;&lt; "frame is continuing!" &lt;&lt; std::endl;
  
  
  
                      //queue.push(proto);
  
                      //list.push_front(proto);
  
                  }
  
              }
  
          }
  
  
  
          SDL_WaitEvent(&amp;event);
  
          switch (event.type)
  
          {
  
          case SDL_QUIT:
  
              quit = true;
  
              break;
  
          }
  
      }
  
  
  
      std::cout &lt;&lt; "closing everything!" &lt;&lt; std::endl;
  
      av_frame_free(&amp;picture);
  
      closesocket(ns);
  
      fclose(f);
  
      std::cin.get();
  
      return 0;
  
  }
  
  </madproto></madproto></madproto>

• H.264 and VP8 for still image coding : WebP ?

  
  1er octobre 2010, par Dark Shikari — google, H.264, psychovisual optimizations, VP8

  Update : post now contains a Theora comparison as well ; see below.

  JPEG is a very old lossy image format. By today’s standards, it’s awful compression-wise : practically every video format since the days of MPEG-2 has been able to tie or beat JPEG at its own game. The reasons people haven’t switched to something more modern practically always boil down to a simple one — it’s just not worth the hassle. Even if JPEG can be beaten by a factor of 2, convincing the entire world to change image formats after 20 years is nigh impossible. Furthermore, JPEG is fast, simple, and practically guaranteed to be free of any intellectual property worries. It’s been tried before : JPEG-2000 first, then Microsoft’s JPEG XR, both tried to unseat JPEG. Neither got much of anywhere.

  Now Google is trying to dump yet another image format on us, “WebP”. But really, it’s just a VP8 intra frame. There are some obvious practical problems with this new image format in comparison to JPEG ; it doesn’t even support all of JPEG’s features, let alone many of the much-wanted features JPEG was missing (alpha channel support, lossless support). It only supports 4:2:0 chroma subsampling, while JPEG can handle 4:2:2 and 4:4:4. Google doesn’t seem interested in adding any of these features either.

  But let’s get to the meat and see how these encoders stack up on compressing still images. As I explained in my original analysis, VP8 has the advantage of H.264′s intra prediction, which is one of the primary reasons why H.264 has such an advantage in intra compression. It only has i4x4 and i16x16 modes, not i8x8, so it’s not quite as fancy as H.264′s, but it comes close.

  The test files are all around 155KB ; download them for the exact filesizes. For all three, I did a binary search of quality levels to get the file sizes close. For x264, I encoded with --tune stillimage --preset placebo. For libvpx, I encoded with --best. For JPEG, I encoded with ffmpeg, then applied jpgcrush, a lossless jpeg compressor. I suspect there are better JPEG encoders out there than ffmpeg ; if you have one, feel free to test it and post the results. The source image is the 200th frame of Parkjoy, from derf’s page (fun fact : this video was shot here ! More info on the video here.).

  Files : (x264 [154KB], vp8 [155KB], jpg [156KB])

  Results (decoded to PNG) : (x264, vp8, jpg)

  This seems rather embarrassing for libvpx. Personally I think VP8 looks by far the worst of the bunch, despite JPEG’s blocking. What’s going on here ? VP8 certainly has better entropy coding than JPEG does (by far !). It has better intra prediction (JPEG has just DC prediction). How could VP8 look worse ? Let’s investigate.

  VP8 uses a 4×4 transform, which tends to blur and lose more detail than JPEG’s 8×8 transform. But that alone certainly isn’t enough to create such a dramatic difference. Let’s investigate a hypothesis — that the problem is that libvpx is optimizing for PSNR and ignoring psychovisual considerations when encoding the image… I’ll encode with --tune psnr --preset placebo in x264, turning off all psy optimizations. 

  Files : (x264, optimized for PSNR [154KB]) [Note for the technical people : because adaptive quantization is off, to get the filesize on target I had to use a CQM here.]

  Results (decoded to PNG) : (x264, optimized for PSNR)

  What a blur ! Only somewhat better than VP8, and still worse than JPEG. And that’s using the same encoder and the same level of analysis — the only thing done differently is dropping the psy optimizations. Thus we come back to the conclusion I’ve made over and over on this blog — the encoder matters more than the video format, and good psy optimizations are more important than anything else for compression. libvpx, a much more powerful encoder than ffmpeg’s jpeg encoder, loses because it tries too hard to optimize for PSNR.

  These results raise an obvious question — is Google nuts ? I could understand the push for “WebP” if it was better than JPEG. And sure, technically as a file format it is, and an encoder could be made for it that’s better than JPEG. But note the word “could”. Why announce it now when libvpx is still such an awful encoder ? You’d have to be nuts to try to replace JPEG with this blurry mess as-is. Now, I don’t expect libvpx to be able to compete with x264, the best encoder in the world — but surely it should be able to beat an image format released in 1992 ?

  Earth to Google : make the encoder good first, then promote it as better than the alternatives. The reverse doesn’t work quite as well.

  Addendum (added Oct. 2, 03:51) :

  maikmerten gave me a Theora-encoded image to compare as well. Here’s the PNG and the source (155KB). And yes, that’s Theora 1.2 (Ptalarbvorm) beating VP8 handily. Now that is embarassing. Guess what the main new feature of Ptalarbvorm is ? Psy optimizations…

  Addendum (added Apr. 20, 23:33) :

  There’s a new webp encoder out, written from scratch by skal (available in libwebp). It’s significantly better than libvpx — not like that says much — but it should probably beat JPEG much more readily now. The encoder design is rather unique — it basically uses K-means for a large part of the encoding process. It still loses to x264, but that was expected.

  [155KB]