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| author | James Dong <jdong@google.com> | 2010-05-14 15:45:22 -0700 |
|---|---|---|
| committer | James Dong <jdong@google.com> | 2010-05-19 07:21:25 -0700 |
| commit | 956c553ab0ce72f8074ad0fda2ffd66a0305700c (patch) | |
| tree | fe111ecd29e01c270246f5f338c56806d6d5b136 /media/libstagefright/codecs/amrwbenc/src/updt_tar.c | |
| parent | e1f61055b4abb96a86d1ff24b5a7777dfe40fe5f (diff) | |
| download | frameworks_av-956c553ab0ce72f8074ad0fda2ffd66a0305700c.zip frameworks_av-956c553ab0ce72f8074ad0fda2ffd66a0305700c.tar.gz frameworks_av-956c553ab0ce72f8074ad0fda2ffd66a0305700c.tar.bz2 | |
Initial software encoder checkins
Change-Id: I27f387db23594e46384c4eb3a0093ce220bb6b60
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/updt_tar.c')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/updt_tar.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/updt_tar.c b/media/libstagefright/codecs/amrwbenc/src/updt_tar.c new file mode 100644 index 0000000..f3e5650 --- /dev/null +++ b/media/libstagefright/codecs/amrwbenc/src/updt_tar.c @@ -0,0 +1,49 @@ +/*
+ ** Copyright 2003-2010, VisualOn, Inc.
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+/***********************************************************************
+* File: updt_tar.c *
+* *
+* Description: Update the target vector for codebook search *
+* *
+************************************************************************/
+
+#include "typedef.h"
+#include "basic_op.h"
+
+void Updt_tar(
+ Word16 * x, /* (i) Q0 : old target (for pitch search) */
+ Word16 * x2, /* (o) Q0 : new target (for codebook search) */
+ Word16 * y, /* (i) Q0 : filtered adaptive codebook vector */
+ Word16 gain, /* (i) Q14 : adaptive codebook gain */
+ Word16 L /* (i) : subframe size */
+ )
+{
+ Word32 i;
+ Word32 L_tmp;
+
+ for (i = 0; i < L; i++)
+ {
+ L_tmp = x[i] << 15;
+ L_tmp -= (y[i] * gain)<<1;
+ x2[i] = extract_h(L_shl2(L_tmp, 1));
+ }
+
+ return;
+}
+
+
+
|