Xiph.org - flac.git/summary

Les articles publiés sur le site

• SIMD : Accelerate decoding of 16 bit FLAC

  19 février 2017, par Erik de Castro Lopo

  SIMD: Accelerate decoding of 16 bit FLAC
  
  This patch removes FLAC__lpc_restore_signal_16_intrin_sse2().
  
  It's faster than C code, but not faster than MMX-accelerated
  ASM functions. It's also slower than the new SSE4.1 functions
  that were added by the previous patch.
  So this function wasn't very useful before, and now it's
  even less useful. I don't see a reason to keep it.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/include/private/lpc.h
  • [DH] src/libFLAC/lpc_intrin_sse41.c
  • [DH] src/libFLAC/stream_decoder.c

• SIMD : Improve decoding of some 24 bit files

  19 février 2017, par Erik de Castro Lopo

  SIMD: Improve decoding of some 24 bit files
  
  Accelerates decoding of non-Subset 24-bit FLAC files (where lpc_order
  > 12).
  
  The improved function is FLAC__lpc_restore_signal_wide_intrin_sse41().
  It requires SSE4.1 and it's used only by 32-bit libFLAC.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/lpc_intrin_sse41.c

• SIMD : Add const qualifier where appropriate

  19 février 2017, par Erik de Castro Lopo

  SIMD: Add const qualifier where appropriate
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/lpc_intrin_avx2.c
  • [DH] src/libFLAC/lpc_intrin_sse2.c
  • [DH] src/libFLAC/lpc_intrin_sse41.c

• cpu.h : Another CPP fixup

  16 février 2017, par Erik de Castro Lopo

  cpu.h: Another CPP fixup
  
  CPP is minefield. We should simplify CPP wherever possible and work
  to minimise nesting.
  

  • [DH] src/libFLAC/include/private/cpu.h

• cpu.h : Fix compiler detection

  15 février 2017, par Erik de Castro Lopo

  cpu.h: Fix compiler detection
  
  GCC version 4.6 was throwing an error on `__has_attribute` which
  seems to be Clang specific. Solution was to un-nest the CPP code
  so that Clang is confirmed before the `__has_attribute` is hit.
  

  • [DH] src/libFLAC/include/private/cpu.h