Sync opus codec to upstream git

Sync opus codec to upstream commit
02fed471a4568852d6618e041c4f2af0d7730ee2 (August 30 2013)

This brings in a lot of optimizations but also makes the diff
between our codec and the upstream much smaller as most of our
optimizations have been upstreamed or supeceded.

Speedups across the board for CELT mode files:

        64kbps      128kbps
H300    9.82MHz     15.48MHz
c200	4.86MHz     9.63MHz
fuze v1 10.32MHz    15.92MHz

For the silk mode test file (16kbps) arm targets get a speedup
of about 2MHz while the H300 is 7.8MHz slower, likely because it's
now using the pseudostack more rather than the real stack which
is in iram. Patches to get around that are upcomming.

Change-Id: Ifecf963e461c51ac42e09dac1e91bc4bc3b12fa3

1 files changed, 10 insertions, 5 deletions

diff --git a/lib/rbcodec/codecs/libopus/silk/resampler_private_down_FIR.c b/lib/rbcodec/codecs/libopus/silk/resampler_private_down_FIR.c
index 5d4cb1f072..163fedd818 100644
--- a/lib/rbcodec/codecs/libopus/silk/resampler_private_down_FIR.c
+++ b/lib/rbcodec/codecs/libopus/silk/resampler_private_down_FIR.c
@@ -12,7 +12,7 @@ documentation and/or other materials provided with the distribution.
 names of specific contributors, may be used to endorse or promote
 products derived from this software without specific prior written
 permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
@@ -26,11 +26,12 @@ POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************/
 
 #ifdef HAVE_CONFIG_H
-#include "opus_config.h"
+#include "config.h"
 #endif
 
 #include "SigProc_FIX.h"
 #include "resampler_private.h"
+#include "stack_alloc.h"
 
 static inline opus_int16 *silk_resampler_private_down_FIR_INTERPOL(
     opus_int16          *out,
@@ -151,11 +152,14 @@ void silk_resampler_private_down_FIR(
     silk_resampler_state_struct *S = (silk_resampler_state_struct *)SS;
     opus_int32 nSamplesIn;
     opus_int32 max_index_Q16, index_increment_Q16;
-    opus_int32 buf[ RESAMPLER_MAX_BATCH_SIZE_IN + SILK_RESAMPLER_MAX_FIR_ORDER ];
+    VARDECL( opus_int32, buf );
     const opus_int16 *FIR_Coefs;
+    SAVE_STACK;
+
+    ALLOC( buf, S->batchSize + S->FIR_Order, opus_int32 );
 
     /* Copy buffered samples to start of buffer */
-    silk_memcpy( buf, S->sFIR, S->FIR_Order * sizeof( opus_int32 ) );
+    silk_memcpy( buf, S->sFIR.i32, S->FIR_Order * sizeof( opus_int32 ) );
 
     FIR_Coefs = &S->Coefs[ 2 ];
 
@@ -185,5 +189,6 @@ void silk_resampler_private_down_FIR(
     }
 
     /* Copy last part of filtered signal to the state for the next call */
-    silk_memcpy( S->sFIR, &buf[ nSamplesIn ], S->FIR_Order * sizeof( opus_int32 ) );
+    silk_memcpy( S->sFIR.i32, &buf[ nSamplesIn ], S->FIR_Order * sizeof( opus_int32 ) );
+    RESTORE_STACK;
 }