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Les articles publiés sur le site

• lavfi : Always propagate hw_frames_ctx through links

  25 octobre 2016, par Mark Thompson

  lavfi: Always propagate hw_frames_ctx through links
  
  Also adds a new flag to mark filters which are aware of hwframes and
  will perform this task themselves, and marks all appropriate filters
  with this flag.
  
  This is required to allow software-mapped hardware frames to work,
  because we need to have the frames context available for any later
  mapping operation in the filter graph.
  
  The output from the filter graph should only propagate further to an
  encoder if the hardware format actually matches the visible format
  (mapped frames are valid here and have an hw_frames_ctx, but this
  should not be given to the encoder as its hardware context).
  

  • [DBH] avconv.c
  • [DBH] libavfilter/avfilter.c
  • [DBH] libavfilter/avfilter.h
  • [DBH] libavfilter/internal.h
  • [DBH] libavfilter/vf_deinterlace_qsv.c
  • [DBH] libavfilter/vf_hwdownload.c
  • [DBH] libavfilter/vf_hwupload.c
  • [DBH] libavfilter/vf_hwupload_cuda.c
  • [DBH] libavfilter/vf_scale_npp.c
  • [DBH] libavfilter/vf_scale_qsv.c
  • [DBH] libavfilter/vf_scale_vaapi.c

• lavfi : Hardware map filter

  25 octobre 2016, par Mark Thompson

  lavfi: Hardware map filter
  
  Takes a frame associated with a hardware context as input and maps it
  to something else (another hardware frame or normal memory) for other
  processing.  If the frame to map was originally in the target format
  (but mapped to something else), the original frame is output.
  
  Also supports mapping backwards, where only the output has a hardware
  context.  The link immediately before will be supplied with mapped
  hardware frames which it can write directly into, and this filter
  then unmaps them back to the actual hardware frames.
  

  • [DBH] libavfilter/Makefile
  • [DBH] libavfilter/allfilters.c
  • [DBH] libavfilter/version.h
  • [DBH] libavfilter/vf_hwmap.c

• hwcontext : Hardware frame mapping

  25 octobre 2016, par Mark Thompson

  hwcontext: Hardware frame mapping
  
  Adds the new av_hwframe_map() function, which allows mapping between
  hardware frames and normal memory, along with internal support for
  implementing it.
  
  Also adds av_hwframe_ctx_create_derived(), for creating a hardware
  frames context associated with one device using frames mapped from
  another by some hardware-specific means.
  

  • [DBH] doc/APIchanges
  • [DBH] libavutil/hwcontext.c
  • [DBH] libavutil/hwcontext.h
  • [DBH] libavutil/hwcontext_internal.h
  • [DBH] libavutil/version.h

• openssl : Avoid double semicolons after the GET_BIO_DATA macro

  25 octobre 2016, par Martin Storsjö

  openssl: Avoid double semicolons after the GET_BIO_DATA macro
  
  When the macro is expanded with a semicolon following it and the
  macro itself contains a semicolon, we ended up in double semicolons,
  which is treated as a statement that disallows further declarations.
  
  This avoids errors about mixed declarations and statements on gcc,
  after ee050797664c.
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/tls_openssl.c

• mov : Evaluate the movie display matrix

  24 octobre 2016, par Vittorio Giovara

  mov: Evaluate the movie display matrix
  
  This matrix needs to be applied after all others have (currently only
  display matrix from trak), but cannot be handled in movie box, since
  streams are not allocated yet. So store it in main context, and apply
  it when appropriate, that is after parsing the tkhd one.
  
  Fate tests are updated accordingly.
  
  Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
  

  • [DBH] libavformat/isom.h
  • [DBH] libavformat/mov.c
  • [DBH] tests/ref/fate/mov-dar
  • [DBH] tests/ref/fate/mov-display-matrix
  • [DBH] tests/ref/fate/mov-sar