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• aarch64 : Add assembly support for -fsanitize=hwaddress tagged globals.

  21 août 2019, par Peter Collingbourne

  aarch64: Add assembly support for -fsanitize=hwaddress tagged globals.
  
  As of LLVM r368102, Clang will set a pointer tag in bits 56-63 of the
  address of a global when compiling with -fsanitize=hwaddress. This requires
  an adjustment to assembly code that takes the address of such globals: the
  code cannot use the regular R_AARCH64_ADR_PREL_PG_HI21 relocation to refer
  to the global, since the tag would take the address out of range. Instead,
  the code must use the non-checking (_NC) variant of the relocation (the
  link-time check is substituted by a runtime check).
  
  This change makes the necessary adjustment in the movrel macro, where it is
  needed when compiling with -fsanitize=hwaddress.
  
  Signed-off-by: Peter Collingbourne <pcc@google.com>
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavutil/aarch64/asm.S

• rtsp : add pkt_size option

  11 avril 2019, par Tristan Matthews

  rtsp: add pkt_size option
  
  This allows users to specify an upper limit on the size of outgoing packets
  when publishing via RTSP.
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rtsp.c
  • [DBH] libavformat/rtsp.h

• time_internal : Prefix fallback versions of gmtime_r/localtime_r with ff_

  10 avril 2019, par Martin Storsjö

  time_internal: Prefix fallback versions of gmtime_r/localtime_r with ff_
  
  Use a macro to redirect calling code from the official name to the
  ff_ prefixed one.
  
  Detecting these functions in configure can be tricky (on mingw, they
  are conditionally available depending on posix feature defines).
  If configure didn't detect them, but they still are visible at
  compile time (due to an unrelated header defining the posix feature
  defines), providing the local fallback versions with a prefixed
  name is safer.
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavutil/time_internal.h

• configure : Include time.h when checking for gmtime_r and localtime_r

  10 avril 2019, par Martin Storsjö

  configure: Include time.h when checking for gmtime_r and localtime_r
  
  These functions are available in time.h (conditional on posix thread
  safe functions) on mingw.
  
  Previously, these functions weren't detected by configure, and
  libavutil/time_internal.h provided replacements, even if time.h
  actually contained definitions of them.
  
  These mingw inline functions are currently defined as
   "extern __inline __attribute__((__gnu_inline__))". In this case,
  redefining a new static inline version of the same function with the
  same name is tolerated.
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] configure

• configure : Add -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 for mingw as well

  10 avril 2019, par Martin Storsjö

  configure: Add -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 for mingw as well
  
  Mingw headers have got header inline implementations of localtime_r
  and gmtime_r, but only visible if certain posix thread safe functions
  have been requested.
  
  This is a preparatory step for improving the detection of those
  functions.
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] configure