[FFmpeg-devel] [PATCH 1/3] aacdec: move the LTP and TNS tables out of aacdectab.h

Claudio Freire klaussfreire at gmail.com
Wed Jul 22 17:58:45 CEST 2015

On Wed, Jul 22, 2015 at 6:18 AM, Nedeljko Babic
<Nedeljko.Babic at imgtec.com> wrote:
>>On Mon, Jul 20, 2015 at 8:50 AM, Nedeljko Babic
>><Nedeljko.Babic at imgtec.com> wrote:
>>>>This commit moves the tables required for encoding and decoding
>>>>LTP and TNS AAC files out of the decoder's standalone tables file
>>>>and into the shared aactab.h, where they can be used by both the
>>>>encoder and the decoder.
>>>>This commit does not break the already-broken aac_fixed decoder.
>>> Not sure I would say that it is broken, since it is not implemented fully yet...
>>I think even with the other patches submitted to the list, TNS (which
>>uses lpc) will break. It will be sending an int* to a function that
>>takes float* (check lpc.h, vs aacdec_template.c:3223 + aac.h:244)
> I am failing to see this.
> If we are talking about functions defined in lpc.h (compute_ref_coefs and compute_lpc_coefs), they are taking LPC_TYPE and it depends on definition of USE_FIXED.
> In case of lpc.h, USE_FIXED is by default set to zero in aac_defines.h included in lpc.h
> apply_tns is sending int* to compute_lpc_coefs() only in case of aacdec_fixed (and in that case compute_lpc_coefs() expects int*, not float*).

Sorry, when I checked, USE_FIXED was either double or float, but never
int. Now that I check again, it's as you say.

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