Revision history for Perl extension Audio::Wav.

0.12 Sun May 30 08:45:03 GMT 2010

• don't use values > MAXINT. +2147483648 is not a valid unsigned int32 (it's MAXINT+1). while we're at it, put all constants in the XS in hex format for clarity. possibly fixes: http://www.cpantesters.org/cpan/report/6945385
• fall back to pureperl when Inline::C is installed but not functional as reported by Michel Lanne.

0.11 Fri Mar 12 04:12:44 GMT 2010

• fix two bugs triggered with inline on win32 - one related to assuming C99 support and one related to lack of stdint.h or equivalent. tested with strawberry perl, should work with msvc too. bug report here: http://www.cpantesters.org/cpan/report/6920668 same smoker reports tests with 0.11 here: http://www.cpantesters.org/cpan/report/6930825

0.10 Sun Feb 14 04:09:00 GMT 2010

• add COPYRIGHT information for debian folks
• include xt/

0.09 Thu Feb 11 14:58:37 GMT 2010

• Support 24 and 32 bit wav reading w/o Inline::C (from Wolfram humann) ( see https://rt.cpan.org/Public/Bug/Display.html?id=36452 )
• add a META.yml and some other easy kwalitee tweaks
• Audio::Wav::Read::hasinline moved to Audio::Wav::hasinline so it can be queried before instantiating a reader (and later be used internally for Audio::Wav::Write)

0.08 Tue Feb 09 06:29:43 GMT 2010

• fix regression: read() returned bogus samples when Inline::C not available

0.07 Sun Feb 07 18:05:41 GMT 2010

• change API so you can call Audio::Wav->{read|write} w/o new() if preferred
• increase pure perl read speed by a factor of ~2.4
  • remove unnecessary bounds check
  • put block in closure, avoiding double hash lookup
  • put $block assign in initread_sub, put read_sub in closure, too
  • pull $handle into closure:
  • get rid of closure, and get rid of read() - inline it with $read_sub
• use Inline::C (if available) to increase read speed by a factor of ~2.3
• experimental support for reading 24- and 32- bit data (suspected to work on little endian machines that use Inline::C)

0.06 Wed Mar 22 12:00:00 2006

• Fixed a circular reference in Audio::Wav::Write::Header that was causing memory to leak (thanks Sumitro Chowdhury).
• Tidied up bits and pieces.
• Added very basic support for WAVEFORMATEXTENSIBLE.
• When writing files, finish() will now be called by DESTROY if necessary.

0.05 Tue Oct 25 12:20:00 2005

• Audio::Wav::Read::position_samples should have divided by block_align rather than multiplied (thanks David Brandt).
• Fixed bug where unknown blocks weren't skipped (thanks Robert Hiller).

0.04 Thu Dec 30 07:47:00 2004

• fixed a bug in Audio::Wav::Read::move_to, now adds where the data actually starts to the position given.
• Audio::Wav::Read::move_to now rereads data length to see if file has grown since this was last read.
• added method Audio::Wav::Read::reread_length, rereads the length of the file in case it is being written to as we are reading it.
• added method Audio::Wav::Read::read_raw_samples which will read X samples in raw format.
• added method Audio::Wav::Read::position_samples which returns the current audio data position in samples.
• in method Audio::Wav::Write::add_cue, if sample position supplied is undefined, then the position will be the current position (end of all data written so far).
• in method Audio::Wav::Write, moved the option of not caching data from the write_raw method to new.

0.03 Fri Jun 11 13:29:00 2004

• minor bug fix to pass tests with Perl 5.8.3 (thanks to Jeremy Devenport).

0.02 Sat Sep 01 15:15:00 2001

• works on big endian machines!
• no need for Audio::Tools anymore
• added support for info & sampler blocks.
• now honours padding bytes
• read & read_raw no longer return non-audio data.
• added error handler.
• slight speed improvement for read & write methods
• some other fixes.

0.01 Fri Dec 11 05:54:22 1998

• original version; created by h2xs 1.18