1. 14 Feb, 2019 1 commit
  2. 14 Dec, 2017 1 commit
    • wm4's avatar
      avcodec: add metadata to identify wrappers and hardware decoders · b945fed6
      wm4 authored
      Explicitly identify decoder/encoder wrappers with a common name. This
      saves API users from guessing by the name suffix. For example, they
      don't have to guess that "h264_qsv" is the h264 QSV implementation, and
      instead they can just check the AVCodec .codec and .wrapper_name fields.
      
      Explicitly mark AVCodec entries that are hardware decoders or most
      likely hardware decoders with new AV_CODEC_CAPs. The purpose is allowing
      API users listing hardware decoders in a more generic way. The proposed
      AVCodecHWConfig does not provide this information fully, because it's
      concerned with decoder configuration, not information about the fact
      whether the hardware is used or not.
      
      AV_CODEC_CAP_HYBRID exists specifically for QSV, which can have software
      implementations in case the hardware is not capable.
      
      Based on a patch by Philip Langdale <philipl@overt.org>.
      
      Merges Libav commit 47687a2f.
      b945fed6
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  9. 26 Apr, 2017 1 commit
    • Ben Chang's avatar
      avcodec/nvenc: surface allocation reduction · 8de3458a
      Ben Chang authored
      This patch aims to reduce the number of input/output surfaces
      NVENC allocates per session. Previous default sets allocated surfaces to 32
      (unless there is user specified param or lookahead involved). Having large
      number of surfaces consumes extra video memory (esp for higher resolution
      encoding). The patch changes the surfaces calculation for default, B-frames,
      lookahead scenario respectively.
      
      The other change involves surface selection. Previously, if a session
      allocates x surfaces, only x-1 surfaces are used (due to combination
      of output delay and lock toggle logic). To prevent unused surfaces,
      changing surface rotation to using predefined fifo.
      Signed-off-by: 's avatarTimo Rothenpieler <timo@rothenpieler.org>
      8de3458a
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