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Les articles publiés sur le site

• svq3 : fix the slice size check

  1er février 2017, par Anton Khirnov

  svq3: fix the slice size check
  
  Currently it incorrectly compares bits with bytes.
  
  Also, move the check right before where it's relevant, so that the
  correct number of remaining bits is used.
  
  CC: libav-stable@libav.org
  

  • [DBH] libavcodec/svq3.c

• scale_npp : explicitly set the output frames context for passthrough mode

  1er février 2017, par Anton Khirnov

  scale_npp: explicitly set the output frames context for passthrough mode
  
  This is no longer done automatically for filters marked as
  hwframe-aware.
  

  • [DBH] libavfilter/vf_scale_npp.c

• build : Ignore generated .version files

  31 janvier 2017, par Diego Biurrun

  build: Ignore generated .version files
  

  • [DBH] .gitignore

• rtmp : Correctly handle the Window Acknowledgement Size packets

  31 janvier 2017, par Martin Storsjö

  rtmp: Correctly handle the Window Acknowledgement Size packets
  
  This swaps which field is set when the Window Acknowledgement Size
  and Set Peer BW packets are received, renames the fields in
  order to clarify their role further and adds verbose comments
  explaining their respective roles and how well the code currently
  does what it is supposed to.
  
  The Set Peer BW packet tells the receiver of the packet (which
  can be either client or server) that it should not send more data
  if it already has sent more data than the specified number of bytes,
  without receiving acknowledgement for them. Actually checking this
  limit is currently not implemented.
  
  In order to be able to check that properly, one can send the
  Window Acknowledgement Size packet, which tells the receiver of the
  packet that it needs to send Acknowledgement packets
  (RTMP_PT_BYTES_READ) at least after receiving a given number of bytes
  since the last Acknowledgement.
  
  Therefore, when we receive a Window Acknowledgement Size packet,
  this sets the maximum number of bytes we can receive without sending
  an Acknowledgement; therefore when handling this packet we should set
  the receive_report_size field (previously client_report_size).
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rtmpproto.c

• rtmp : Rename packet types to closer match the spec

  31 janvier 2017, par Martin Storsjö

  rtmp: Rename packet types to closer match the spec
  
  Also rename comments and log messages accordingly,
  and add clarifying comments for some hardcoded values.
  
  The previous names were taken from older, reverse engineered
  references.
  
  These names match the official public rtmp specification, and
  matches the names used by wirecast in annotating captured
  streams. These names also avoid hardcoding the roles of server
  and client, since the handling of them is irrelevant of whether
  we act as server or client.
  
  The RTMP_PT_PING type maps to RTMP_PT_USER_CONTROL.
  
  The SERVER_BW and CLIENT_BW types are a bit more intertwined;
  RTMP_PT_SERVER_BW maps to RTMP_PT_WINDOW_ACK_SIZE and
  RTMP_PT_CLIENT_BW maps to RTMP_PT_SET_PEER_BW.
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rtmppkt.c
  • [DBH] libavformat/rtmppkt.h
  • [DBH] libavformat/rtmpproto.c