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• Suggestions on moving textures in system ram to gpu in DirectX ?

  11 février 2014, par OddlyOrdinary

  I've used FFMPEG to decode a 1080p 60fps video and have a pool of ready texture color information. Stored as just an uint8_t array. I've managed to create ID3D102D textures and update them with the color information, but my performance varies from 45-65fps.

  For reference this is a test application where I'm attempting to draw the video on a mesh. There are no other objects being processed by DirectX or my application.

  My original implementation involved me getting the pixel information from the pool of decoded video frames, using a simple Dynamic texture2d, mapping/memcopying/unmapping. The memcopy was very expensive at about 20% of my runtime.

  I've changed to decoding the video straight to a pool of D3D10_USAGE_DYNAMIC/D3D10_CPU_ACCESS_WRITE textures, and I'm able to always have textures ready before each update loop. I then have a Texture2D applied to the mesh that I'm updating with

  ID3D10Texture2D* decodedFrame = mDecoder->GetFrame();
  
  if(decodedFrontFrame){
  
      //ID3D10Device* device;
  
      device->CopyResource(mTexture, decodedFrame );
  
  }

  From my understanding CopyResource should be faster but I don't see a noticeable difference. My questions are, is there a better way ? Also for textures created with D3D10_USAGE_DYNAMIC, is there a way to tell DirectX that I intend to use it on the gpu the next frame ?

  The last thing I can think of would be decoding to a D3D10_USAGE_DEFAULT, but I don't know how I would create it using existing pixel information in system ram. Suggestions would be greatly appreciated, Thanks !

• Anomalie #2698 : mauvais hashage du mot de passe

  12 mai 2012, par cedric -

  Debogué grace au skel de test de marcimat : #INSERT_HEAD .pass color :#494 ; .pass_alea color :#C00 ; #SETpass,#ENV**pass,0000000000000000000000000000 PHP Length :".strlen(’#GET**pass’)." " . _nano_sha256(’#GET**pass’). " " ; ?> JS jQuery(document).ready(function() (...)

• how to know when conversion is done when using ffmpeg php ?

  6 mars 2016, par Patrioticcow

  i am converting some videos using this syntax. e

  exec("ffmpeg -i video.avi -ar 22050 -ab 32 -f flv -s 320x240 video.flv", $out);

  verything works ok, just that i don’t know when the files are ready.

  print_r($out) doesn’t seem to return anything

  any ideas ?

  Thanks