Recherche avancée

Sur d’autres sites (2984)

• swscale/aarch64 : add hscale specializations

  26 mai 2022, par Swinney, Jonathan

  swscale/aarch64 : add hscale specializations
  This patch adds code to support specializations of the hscale function
  
  and adds a specialization for filterSize == 4.
  ff_hscale8to15_4_neon is a complete rewrite. Since the main bottleneck
  
  here is loading the data from src, this data is loaded a whole block
  
  ahead and stored back to the stack to be loaded again with ld4. This
  
  arranges the data for most efficient use of the vector instructions and
  
  removes the need for completion adds at the end. The number of
  
  iterations of the C per iteration of the assembly is increased from 4 to
  
  8, but because of the prefetching, there must be a special section
  
  without prefetching when dstW < 16.
  This improves speed on Graviton 2 (Neoverse N1) dramatically in the case
  
  where previously fs=8 would have been required.
  before : hscale_8_to_15__fs_8_dstW_512_neon : 1962.8
  
  after : hscale_8_to_15__fs_4_dstW_512_neon : 1220.9
  Signed-off-by : Jonathan Swinney <jswinney@amazon.com>
  
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libswscale/aarch64/hscale.S
  • [DH] libswscale/aarch64/swscale.c
  • [DH] libswscale/utils.c

• receive a ffmpeg live streaming with a golang server and echo to a websocket conn

  28 juillet 2017, par Lucas Carvalho

  I’m writing a server in go and need to get a cam video in a ffmpeg client and passes the streaming to websocket users.

  But in my code, the http body received from the ffmpeg client is loaded by a ioutil.ReadAll and cannot make a live broadcast because the body is receiving new values with the video capture.
  How i can take the last frame of the video, send to the websockets, clean the variable and receive the new frame correctly (or i’m doing in the wrong way) ?

  Here is my code to this function :

  //StartClientStream needs a email$clientName$streamName
  
  func StartClientStream(w http.ResponseWriter, r *http.Request) {
  
  
  
      values := strings.Split(string(mux.Vars(r)["rest"]), "$")
  
  
  
      if len(values) != 3 {
  
          w.Write([]byte(`{"err":"the passed value does not match with necessary fields"}`))
  
          return
  
      }
  
      //Get user ID
  
      id, _ := getID(values[0])
  
      //Take the streaming ClientName
  
      clientName := id + " - " + values[1]
  
      //Take the passed Body
  
      body, _ := ioutil.ReadAll(r.Body)
  
      //Watch for websockets requests for this video
  
      for user := range Streaming.User[clientName] {
  
          conexoes := strings.Split(Streaming.User[clientName][user], "-")
  
          for c := range conexoes {
  
              if strings.EqualFold(conexoes[c], values[2]) {
  
                  //Send the video
  
                  user.send <- body
  
              }
  
          }
  
      }
  
  
  
  }

• Merge commit ’f6633c55a3c0e93a5b2bab6aa0692fb608f2a38d’

  23 octobre 2013, par Michael Niedermayer

  Merge commit ’f6633c55a3c0e93a5b2bab6aa0692fb608f2a38d’
  * commit ’f6633c55a3c0e93a5b2bab6aa0692fb608f2a38d’ :
  
    avfilter : Fix typo in Loren’s email address
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavfilter/gradfun.h
  • [DH] libavfilter/vf_gradfun.c
  • [DH] libavfilter/x86/vf_gradfun.c