shithub: opus

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Strip off trailing zero bytes when in LPC mode.
Saves about 60 bits/sec for 20ms frames.

--- a/src/opus_encoder.c

+++ b/src/opus_encoder.c

@@ -568,6 +568,14 @@

     {

         ret = (ec_tell(&enc)+7)>>3;

         ec_enc_done(&enc);

+        /*When in LPC only mode it's perfectly

+          reasonable to strip off trailing zero bytes as

+          the required range decoder behavior is to

+          fill these in. This can't be done when the MDCT

+          modes are used because the decoder needs to know

+          the actual length for allocation purposes.*/

+        if(!redundancy)

+            while(ret>2&&data[ret-1]==0)ret--;

         nb_compr_bytes = ret;

     }