>> + if (use_ltp) {
>> + int ltp_smp;
>> +
>> + for (ltp_smp = 0; ltp_smp < block_length; ltp_smp++) {
>> + int center = ltp_smp - lag;
>> + int begin = FFMAX(0, center - 2);
>> + int end = center + 3;
>> + int tab = 5 - (end - begin);
>> + int base;
>> +
>> + y = 1 << 6;
>> +
>> + for (base = begin; base < end; base++, tab++)
>> + y += MUL64(gain[tab], raw_samples[base]);
>> +
>> + raw_samples[ltp_smp] += y >> 7;
>> + }
>> + }
>
>
> Maybe you could calculate the point where begin < end so that you don't
> have a lot of unneeded raw_samples[ltp_smp] += 0.
Good point. Done!
>
> Good job. I assume it works with conformance test samples?
With the conformance as well as my own test files, yes.
Thanks!
-Thilo
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