[FFmpeg-devel] [PATCH] Added integer 32 bits support to wavpack

Jai Menon jmenon86
Fri May 1 20:32:00 CEST 2009

On Fri, May 1, 2009 at 11:58 PM, Reimar D?ffinger
<Reimar.Doeffinger at gmx.de> wrote:
> On Fri, May 01, 2009 at 07:39:37PM +0300, Kostya wrote:
>> On Fri, May 01, 2009 at 06:08:37PM +0200, Laurent Aimar wrote:
>> > > I'd use s->crc_extra = AV_RL32(buf) and open bit buffer after that but this
>> > > looks fine too. Oh, and please add block size check.
>> > ?Using the bitstream reader here seems simpler to me, and additionnaly
>> > avoid the need of buffer size checks ;)
>> It's not - if size <=4 (as WavPack source code says), it should be treated as
>> error, so check is needed anyway (not for bits reading though).
> Huh? Where does that idea that using the bitstream reader means you can
> skip the size checks come from?
> Is that why ALAC is so horribly broken in that regard?

Very likely. All input is done *solely* using get_bits, so adding
checks requires some hacks.



More information about the ffmpeg-devel mailing list