[MPlayer-dev-eng] Re: [PATCH] add support for big-endian PCM output

[Grant Edwards]

On 2007-03-21, Giacomo Comes <comes at naic.edu> wrote:

>> I needed to be able to encode to 16-bit uncompressed big-endian
>> PCM.  I couldn't get either "-format sb16be" or "-af format=s16be" 
>> to encode to big-endian format, so I gave up and added a "pcms"
>> audio encoder that swaps the byte-order of the data stream.  In
>> order to get lavf containers to label the stream correctly, I
>> had to invent a new "wav" audio tag for big-endian PCM.
>> 
>> Although it works I have a feeling that this wasn't really the
>> "right" way to do it.  If anybody would care to comment or
>> suggest a better way to get big-endian PCM output please feel
>> free to do so.
>> 
>> Anyway, the patch is available at 
>> 
>> http://www.visi.com/~grante/sansa/mplayer-1.0rc1-encode-bigendian-pcm.patch
>
> I did create some time ago a patch that allow to use the option -format 
> togheter with -ao pcm:nowaveheader.

How does the output file end up with the selected audio format in the
header?  It's set based on the format in the WAV header isn't it?

> I'm sending it again with the hope that this time it will be considered
> (it still apply against current svn).
>
> Could you use my (simpler) patch for your purpose?

Possibly.

I don't see how the output file is going to end up with the
correct audio format in the header.  Not to say that it
doesn't -- my understanding of how mencoder works is pretty
fuzzy.

-- 
Grant Edwards                   grante             Yow!  ... My pants just
                                  at               went on a wild rampage
                               visi.com            through a Long Island
                                                   Bowling Alley!!