shithub: opus

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Make the encoder output a "PLC packet" when SILK can't reach the target

--- a/src/opus_encoder.c

+++ b/src/opus_encoder.c

@@ -1115,9 +1115,16 @@

     st->first = 0;

     if (!redundancy && st->mode==MODE_SILK_ONLY && !st->use_vbr && ret >= 2)

     {

-       nb_compr_bytes = st->bitrate_bps * frame_size / (st->Fs * 8);

-       pad_frame(data, ret+1, nb_compr_bytes);

-       return nb_compr_bytes;

+       /* In the unlikely case that the SILK encoder busted its target, tell

+          the decoder to call the PLC */

+       if (ec_tell(&enc) > (max_data_bytes-1)*8)

+       {

+          data[1] = 0;

+          ret = 1;

+          st->rangeFinal = 0;

+       }

+       pad_frame(data, ret+1, max_data_bytes);

+       return max_data_bytes;

     }

     RESTORE_STACK;

     return ret+1+redundancy_bytes;