Update to opus-HEAD-66611f1.

src/opus_private.h

Index: src/opus_private.h
diff --git a/src/opus_private.h b/src/opus_private.h
index 83225f2b6c11b82c98b406c17910bbc473b6ca21..3177f52442b4acd59d1da5387912209f2e627403 100644
--- a/src/opus_private.h
+++ b/src/opus_private.h
@@ -86,10 +86,6 @@ typedef void (*downmix_func)(const void *, opus_val32 *, int, int, int, int, int
 void downmix_float(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
 void downmix_int(const void *_x, opus_val32 *sub, int subframe, int offset, int c1, int c2, int C);
 
-int optimize_framesize(const opus_val16 *x, int len, int C, opus_int32 Fs,
-                int bitrate, opus_val16 tonality, float *mem, int buffering,
-                downmix_func downmix);
-
 int encode_size(int size, unsigned char *data);
 
 opus_int32 frame_size_select(opus_int32 frame_size, int variable_duration, opus_int32 Fs);
@@ -104,7 +100,8 @@ opus_int32 compute_frame_size(const void *analysis_pcm, int frame_size,
 
 opus_int32 opus_encode_native(OpusEncoder *st, const opus_val16 *pcm, int frame_size,
       unsigned char *data, opus_int32 out_data_bytes, int lsb_depth,
-      const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2, int analysis_channels, downmix_func downmix);
+      const void *analysis_pcm, opus_int32 analysis_size, int c1, int c2,
+      int analysis_channels, downmix_func downmix, int float_api);
 
 int opus_decode_native(OpusDecoder *st, const unsigned char *data, opus_int32 len,
       opus_val16 *pcm, int frame_size, int decode_fec, int self_delimited,