SILK fixes following last codec WG meeting

decoder:
- fixed incorrect scaling of filter states for the smallest quantization
  step sizes
- NLSF2A now limits the prediction gain of LPC filters

encoder:
- increased damping of LTP coefficients in LTP analysis
- increased white noise fraction in noise shaping LPC analysis
- introduced maximum total prediction gain.  Used by Burg's method to
  exit early if prediction gain is exceeded.  This improves packet
  loss robustness and numerical robustness in Burg's method
- Prefiltered signal is now in int32 Q10 domain, from int16 Q0
- Increased max number of iterations in CBR gain control loop from 5 to 6
- Removed useless code from LTP scaling control
- Optimization: smarter LPC loop unrolling
- Switched default win32 compile mode to be floating-point

resampler:
- made resampler have constant delay of 0.75 ms; removed delay
  compensation from silk code.
- removed obsolete table entries (~850 Bytes)
- increased downsampling filter order from 16 to 18/24/36 (depending on
  frequency ratio)
- reoptimized filter coefficients

1 files changed, 6 insertions, 4 deletions

diff --git a/silk/resampler_private.h b/silk/resampler_private.h
index 9e14c0f6..96fe83ed 100644
--- a/silk/resampler_private.h
+++ b/silk/resampler_private.h
@@ -25,8 +25,8 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************/
 
-#ifndef SILK_RESAMPLER_H
-#define SILK_RESAMPLER_H
+#ifndef SILK_RESAMPLER_PRIVATE_H
+#define SILK_RESAMPLER_PRIVATE_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -37,7 +37,9 @@ extern "C" {
 #include "resampler_rom.h"
 
 /* Number of input samples to process in the inner loop */
-#define RESAMPLER_MAX_BATCH_SIZE_IN             480
+#define RESAMPLER_MAX_BATCH_SIZE_MS             10
+#define RESAMPLER_MAX_FS_KHZ                    48
+#define RESAMPLER_MAX_BATCH_SIZE_IN             ( RESAMPLER_MAX_BATCH_SIZE_MS * RESAMPLER_MAX_FS_KHZ )
 
 /* Description: Hybrid IIR/FIR polyphase implementation of resampling */
 void silk_resampler_private_IIR_FIR(
@@ -83,4 +85,4 @@ void silk_resampler_private_AR2(
 #ifdef __cplusplus
 }
 #endif
-#endif /* SILK_RESAMPLER_H */
+#endif /* SILK_RESAMPLER_PRIVATE_H */