[FFmpeg-soc] [soc]: r5408 - in als: als_data.h alsdec.c

Thilo Borgmann thilo.borgmann at googlemail.com
Wed Oct 14 02:46:48 CEST 2009


>> +    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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