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for ff_cos_* and ff_sin_* without introducing too much code duplication.


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Patch by Frank Barchard, fbarchard google com


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This fixes a regression introduced in r20170.



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initialized by ff_fft_init and using different code can result in slightly
different values, in addition it crashes when the tables are hardcoded.
On amd64 this slightly changes qdm2 output.


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This hopefully is fast enough so that it is reasonable to use the same formula
directly instead of the table for CONFIG_SMALL.


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--enable-hardcoded-tables was used.
Due to the size, the code for the tables is generated at compile time.


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buffers, this hopefully should help detect codecs that do not release all
buffers e.g. in the decode_end function.


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done at a higher level.


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Fixes issue 1467.


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part instead of failing completely.
This partly fixes issue 1470 (broken files created by BBC ingex recorder).


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determining if there is any delay in the first packet and/or any truncation in 
the final packet.


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- clarify when 0 is returned
- explain that decode_audio3 has to be called multiple times when there
  are multiple frames in a single packet


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This allows for some simplifications like removing some outer loops
and gives much better performance for thread_count > number of idle CPUs.


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processing with jobs > threads without wasting too much memory.
It also avoids needing a separate int array when the only additional data
the jobs needs is a single int running from 0 to count-1.


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was provided.

Patch by Daniel G. Taylor, dan programmer-art org 


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A certain rotten fruit operating system doesn't provide the 8-byte stack
alignment required by the standard ARM ABI, so align it manually.

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