Misc bug fixes

- There was a bug where the decoder resampler was not properly initialized
when fs_kHz == API_fs_kHz. In that case the resampler would continue to
upsample, and the output was corrupt.

- The delay value in the decoder was taken from the state before it was
potentially updated. This caused the decoder to apply the new dalay value one
frame late

- The encoder and decoder states are now updated more consistently, when
the sampling rate changes (pesq liked these changes)

- Properly resetting the side channel encoder and decoder for the first
frame with side coding active again

- Faster updating the "ratio" value in the LR_to_MS() code for large
prediction values means that for certain extreme/artificial input
signals the output looks better

1 files changed, 3 insertions, 0 deletions

diff --git a/silk/control.h b/silk/control.h
index 912455b2..ac1b288e 100644
--- a/silk/control.h
+++ b/silk/control.h
@@ -117,6 +117,9 @@ typedef struct {
 
     /* I:   Number of samples per packet in milliseconds; 10/20/40/60                       */
     opus_int payloadSize_ms;
+
+    /* O:   Pitch lag of previous frame (0 if unvoiced), measured in samples at 48 kHz      */
+    opus_int prevPitchLag;
 } silk_DecControlStruct;
 
 #ifdef __cplusplus