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• avutil/channel_layout : add a 5.1.2 layout using side channels

  30 décembre 2024, par James Almer

  avutil/channel_layout: add a 5.1.2 layout using side channels
  
  And rename the existing 5.1.2 to explicitly state it contains back channels.
  
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] doc/APIchanges
  • [DH] libavutil/channel_layout.c
  • [DH] libavutil/channel_layout.h
  • [DH] libavutil/version.h
  • [DH] tests/ref/fate/channel_layout
  • [DH] tests/ref/fate/iamf-5_1_4
  • [DH] tests/ref/fate/mov-mp4-iamf-5_1_4
  • [DH] tests/streamgroups/audio_element-5_1_4
  • [DH] tests/streamgroups/mix_presentation-5_1_4

• lavc/vvc : Fix race condition for MVs cropped to subpic

  30 décembre 2024, par Frank Plowman

  lavc/vvc: Fix race condition for MVs cropped to subpic
  
  When the current subpicture has sps_subpic_treated_as_pic_flag equal to
  1, motion vectors are cropped such that they cannot point to other
  subpictures.  This was accounted for in the prediction logic, but not
  in pred_get_y, which is used by the scheduling logic to determine which
  parts of the reference pictures must have been reconstructed before
  inter prediction of a subsequent frame may begin.  Consequently, where a
  motion vector pointed to a location significantly above the current
  subpicture, there was the possibility of a race condition.  Patch fixes
  this by cropping the motion vector to the current subpicture in
  pred_get_y.
  
  Signed-off-by: Frank Plowman <post@frankplowman.com>
  

  • [DH] libavcodec/vvc/ctu.c

• avfilter/buffersrc : check for valid sample rate

  30 décembre 2024, par James Almer

  avfilter/buffersrc: check for valid sample rate
  
  A sample rate <= 0 is invalid.
  
  Fixes an assert in ffmpeg_enc.c that assumed a valid sample rate would be set.
  Fixes ticket #11385.
  
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] libavfilter/buffersrc.c

• avutil/frame : add a side data prop to signal channel layout dependent types

  29 décembre 2024, par James Almer

  avutil/frame: add a side data prop to signal channel layout dependent types
  
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] doc/APIchanges
  • [DH] libavutil/frame.c
  • [DH] libavutil/frame.h
  • [DH] libavutil/version.h

• avcodec/libdav1d : clear the buffered Dav1dData on decoding failure

  27 décembre 2024, par James Almer

  avcodec/libdav1d: clear the buffered Dav1dData on decoding failure
  
  Should ensure avcodec_send_packet() doesn't return EAGAIN in scenarios where it's not
  meant to (e.g., ffmpeg_dec.c where avcodec_receive_frame() is called in a loop to drain
  all produced frames before trying to submit more packets).
  
  Fixes ticket #11377.
  
  Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/libdav1d.c