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• lsws/ppc/yuv2rgb_altivec : Fix build in non-VSX environments

  10 octobre 2020, par Chip Kerchner

  lsws/ppc/yuv2rgb_altivec : Fix build in non-VSX environments
  Add inline function for vec_xl if VSX is not supported. vec_xl intrinsic
  
  is only available on POWER 7 or higher.
  Fixes ticket #8750.
  Signed-off-by : Andriy Gelman <andriy.gelman@gmail.com>
  

  • [DH] libswscale/ppc/yuv2rgb_altivec.c

• Google Lato Font Display discrepancies between platforms/software [closed]

  5 juin 2024, par CRAIG

  Using Google's Lato font with 400 weight, is giving me some inconsistent results between Photoshop/Web on MacOS and Linux Imagemagick & Linux ffmpeg.

  


  I have printed out some text on my linux server using the font using both imagemagick (v6.9.10-68) and ffmpeg's (v6.0) drawtext feature and in both cases, I get some extra space between the T and the e. (Image below)

  


  At first I was only testing ffmpeg and thought it was related to drawtext, but now that imagemagick is doing the same, I am thinking it may be somehow related to how the server is managing the font ?

  


  I did download the exact same font to test on my Mac and installed it, but I still get the original photoshop results I was getting before. So I don't think it is inherently the font unless I missed a step. I did completely uninstall the font and then install the downloaded one to be sure.

  


  However, the same word, font, font-size combo used in Photoshop and on the web does not produce the same space between the T and the e.

  


  Here is an image I put together showing the results :

  


  

  


  For reference, here is the imagemagick command :

  


  convert -size 900x900 xc:black -font /fonts/Lato:400.ttf -pointsize 261.6 -fill white -gravity center -annotate +0+0 'Text' testoutput.png

  


  And the ffmpeg command :

  


  /usr/local/bin/ffmpeg -f  lavfi  -i  color=c=black@0.0:s=953x953:r=30:d=5,format=rgba  -filter_complex  "drawtext=expansion=none:enable='between(t,0,5)':fontfile='/fonts/Lato\:400.ttf':fontcolor=0xffffffff:fontsize=294:text='Text':x=(w-text_w)/2+0:y=476.5-(max_glyph_a)+(294/2.8)"  -copyts  -threads  1  -c:v  png  -pix_fmt  rgba  -movflags  faststart  -r  30  -t  8  -y  testoutput.mov

  


• avcodec/mips : Improve hevc uni-w copy mc msa functions

  21 septembre 2017, par Kaustubh Raste

  avcodec/mips : Improve hevc uni-w copy mc msa functions
  Load the specific destination bytes instead of MSA load and pack.
  
  Pack the data to half word before clipping.
  
  Use immediate unsigned saturation for clip to max saving one vector register.
  Signed-off-by : Kaustubh Raste <kaustubh.raste@imgtec.com>
  
  Reviewed-by : Manojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/mips/hevc_mc_uniw_msa.c
  • [DH] libavutil/mips/generic_macros_msa.h