Xiph.org - flac.git/summary

Les articles publiés sur le site

• libFLAC/bitmath : Restore an ASSERT that was removed some time after 1.2.1.

  28 juin 2014, par Erik de Castro Lopo

  libFLAC/bitmath : Restore an ASSERT that was removed some time after 1.2.1.
  
  Restore a FLAC__ASSERT() to bitmath functions FLAC__bitmath_ilog2 and
  FLAC__bitmath_ilog2_wide functions. This prevents the return of an
  "undefined" value.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/bitmath.c
  • [DH] src/libFLAC/include/private/bitmath.h

• libFLAC/lpc_intrin_sseN.c : Disambiguate macro names.

  28 juin 2014, par Erik de Castro Lopo

  libFLAC/lpc_intrin_sseN.c : Disambiguate macro names.
  
  Previously, the files lpc_intrin_sse2.c and lpc_intrin_sse41.c both defined
  macros RESIDUAL_RESULT and DATA_RESULT. This situation made it impossible
  to merge these files which we may do at some stage.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

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

• libFLAC : CPUID detecion improvements.

  28 juin 2014, par Erik de Castro Lopo

  libFLAC: CPUID detecion improvements.
  
  According to docs, it's incorrect to just call CPUID with EAX=1.
  One must to ensure that this value is supported.
  
  CPUs that don't support CPUID level 1 are very old, but...
  if FLAC tests CPUID presence it should also test CPUID level support.
  
  Also the function FLAC__cpu_have_cpuid_asm_ia32 was simplified
  according to the docs at Intel website and in Wikipedia.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/cpu.c
  • [DH] src/libFLAC/ia32/cpu_asm.nasm

• flac : Fix channel order for mono files.

  28 juin 2014, par Erik de Castro Lopo

  flac: Fix channel order for mono files.
  
  * The default channel mask for mono files was 0x0001 (front left) but it
    makes more sense to use 0x0004 (front center) for such files.
  
  * Also FLAC will accept not only mono WAV files with 0x0001 mask, but also
    with 0x0002 (requested at https://sourceforge.net/p/flac/bugs/390/)
    and 0x0004 (e.g. SoX creates mono files with this mask).
  
  * The comment about channel support was updated.
  
  * The error message
       "Use --channel-map=none option to store channels in current order; FLAC files
       must also be decoded with --channel-map=none to restore correct order."
    is misleading: FLAC never changes the order of channels.
    Decoding with this options also sets the channel mask of the resulting WAV
    file to 0. Without this option the mask is equal to the value of
    WAVEFORMATEXTENSIBLE_CHANNEL_MASK tag.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/flac/decode.c
  • [DH] src/flac/encode.c

• flac : Fix encoder and decode progress messages with —ogg.

  28 juin 2014, par Erik de Castro Lopo

  flac: Fix encoder and decode progress messages with --ogg.
  
  Problem discussed here:
  
     http://lists.xiph.org/pipermail/flac-dev/2014-June/004808.html
  
  The values for the interval between two updates (e->stats_mask,
  e->stats_frames_interval) were set ~10 years ago, and it is small
  for current CPUs. It was now been increased too (0x3f -> 0xff, etc).
  The update interval is still less than 1 second.
  
  Patch-from: lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/flac/decode.c
  • [DH] src/flac/encode.c