[FFmpeg-trac] #8505(avcodec:open): fast aac encoder produces invalid output for x86 32-bit builds

[FFmpeg]

#8505: fast aac encoder produces invalid output for x86 32-bit builds
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             Reporter:               |                    Owner:
  LeadAssimilator                    |
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  regression   |               Blocked By:
  aac                                |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by LeadAssimilator):

 Do you mean use sse instead of sse2?  quant doesn't need any specific sse2
 instructions and can be implemented in sse only.  But
 ff_aac_quantize_bands_sse2 is used when sse2 is available, so a sse
 version of quant would also have to only be used when sse2 is available.

 Using a sse quant when sse2 is available would fix the problem when run on
 x86 with sse2, but not when run on x86 without sse2 (old cpus or embedded
 socs like intel quark for example) and compiling with -Os, -O1 or better.
 The sse quant would also have to be called via a function pointer like
 other hand optimized functions.  The performance impact should be
 negligible, but isn't correctness to prevent corrupted output more
 important here?

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Ticket URL: <https://trac.ffmpeg.org/ticket/8505#comment:23>
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