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Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/syn_filt.c')
-rw-r--r--media/libstagefright/codecs/amrwbenc/src/syn_filt.c320
1 files changed, 160 insertions, 160 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/syn_filt.c b/media/libstagefright/codecs/amrwbenc/src/syn_filt.c
index 6c1fb8e..90fafb0 100644
--- a/media/libstagefright/codecs/amrwbenc/src/syn_filt.c
+++ b/media/libstagefright/codecs/amrwbenc/src/syn_filt.c
@@ -1,160 +1,160 @@
-/*
- ** 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: syn_filt.c *
-* *
-* Description: Do the synthesis filtering 1/A(z) *
-* *
-************************************************************************/
-
-#include "typedef.h"
-#include "basic_op.h"
-#include "math_op.h"
-#include "cnst.h"
-
-void Syn_filt(
- Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
- Word16 x[], /* (i) : input signal */
- Word16 y[], /* (o) : output signal */
- Word16 lg, /* (i) : size of filtering */
- Word16 mem[], /* (i/o) : memory associated with this filtering. */
- Word16 update /* (i) : 0=no update, 1=update of memory. */
- )
-{
- Word32 i, a0;
- Word16 y_buf[L_SUBFR16k + M16k];
- Word32 L_tmp;
- Word16 *yy, *p1, *p2;
- yy = &y_buf[0];
- /* copy initial filter states into synthesis buffer */
- for (i = 0; i < 16; i++)
- {
- *yy++ = mem[i];
- }
- a0 = (a[0] >> 1); /* input / 2 */
- /* Do the filtering. */
- for (i = 0; i < lg; i++)
- {
- p1 = &a[1];
- p2 = &yy[i-1];
- L_tmp = vo_mult32(a0, x[i]);
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1++), (*p2--));
- L_tmp -= vo_mult32((*p1), (*p2));
-
- L_tmp = L_shl2(L_tmp, 4);
- y[i] = yy[i] = extract_h(L_add(L_tmp, 0x8000));
- }
- /* Update memory if required */
- if (update)
- for (i = 0; i < 16; i++)
- {
- mem[i] = yy[lg - 16 + i];
- }
- return;
-}
-
-
-void Syn_filt_32(
- Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
- Word16 m, /* (i) : order of LP filter */
- Word16 exc[], /* (i) Qnew: excitation (exc[i] >> Qnew) */
- Word16 Qnew, /* (i) : exc scaling = 0(min) to 8(max) */
- Word16 sig_hi[], /* (o) /16 : synthesis high */
- Word16 sig_lo[], /* (o) /16 : synthesis low */
- Word16 lg /* (i) : size of filtering */
- )
-{
- Word32 i,a0;
- Word32 L_tmp, L_tmp1;
- Word16 *p1, *p2, *p3;
- a0 = a[0] >> (4 + Qnew); /* input / 16 and >>Qnew */
- /* Do the filtering. */
- for (i = 0; i < lg; i++)
- {
- L_tmp = 0;
- L_tmp1 = 0;
- p1 = a;
- p2 = &sig_lo[i - 1];
- p3 = &sig_hi[i - 1];
-
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
- L_tmp -= vo_mult32((*p2--), (*p1));
- L_tmp1 -= vo_mult32((*p3--), (*p1++));
-
- L_tmp = L_tmp >> 11;
- L_tmp += vo_L_mult(exc[i], a0);
-
- /* sig_hi = bit16 to bit31 of synthesis */
- L_tmp = L_tmp - (L_tmp1<<1);
-
- L_tmp = L_tmp >> 3; /* ai in Q12 */
- sig_hi[i] = extract_h(L_tmp);
-
- /* sig_lo = bit4 to bit15 of synthesis */
- L_tmp >>= 4; /* 4 : sig_lo[i] >> 4 */
- sig_lo[i] = (Word16)((L_tmp - (sig_hi[i] << 13)));
- }
-
- return;
-}
-
-
-
-
+/*
+ ** 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: syn_filt.c *
+* *
+* Description: Do the synthesis filtering 1/A(z) *
+* *
+************************************************************************/
+
+#include "typedef.h"
+#include "basic_op.h"
+#include "math_op.h"
+#include "cnst.h"
+
+void Syn_filt(
+ Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
+ Word16 x[], /* (i) : input signal */
+ Word16 y[], /* (o) : output signal */
+ Word16 lg, /* (i) : size of filtering */
+ Word16 mem[], /* (i/o) : memory associated with this filtering. */
+ Word16 update /* (i) : 0=no update, 1=update of memory. */
+ )
+{
+ Word32 i, a0;
+ Word16 y_buf[L_SUBFR16k + M16k];
+ Word32 L_tmp;
+ Word16 *yy, *p1, *p2;
+ yy = &y_buf[0];
+ /* copy initial filter states into synthesis buffer */
+ for (i = 0; i < 16; i++)
+ {
+ *yy++ = mem[i];
+ }
+ a0 = (a[0] >> 1); /* input / 2 */
+ /* Do the filtering. */
+ for (i = 0; i < lg; i++)
+ {
+ p1 = &a[1];
+ p2 = &yy[i-1];
+ L_tmp = vo_mult32(a0, x[i]);
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1++), (*p2--));
+ L_tmp -= vo_mult32((*p1), (*p2));
+
+ L_tmp = L_shl2(L_tmp, 4);
+ y[i] = yy[i] = extract_h(L_add(L_tmp, 0x8000));
+ }
+ /* Update memory if required */
+ if (update)
+ for (i = 0; i < 16; i++)
+ {
+ mem[i] = yy[lg - 16 + i];
+ }
+ return;
+}
+
+
+void Syn_filt_32(
+ Word16 a[], /* (i) Q12 : a[m+1] prediction coefficients */
+ Word16 m, /* (i) : order of LP filter */
+ Word16 exc[], /* (i) Qnew: excitation (exc[i] >> Qnew) */
+ Word16 Qnew, /* (i) : exc scaling = 0(min) to 8(max) */
+ Word16 sig_hi[], /* (o) /16 : synthesis high */
+ Word16 sig_lo[], /* (o) /16 : synthesis low */
+ Word16 lg /* (i) : size of filtering */
+ )
+{
+ Word32 i,a0;
+ Word32 L_tmp, L_tmp1;
+ Word16 *p1, *p2, *p3;
+ a0 = a[0] >> (4 + Qnew); /* input / 16 and >>Qnew */
+ /* Do the filtering. */
+ for (i = 0; i < lg; i++)
+ {
+ L_tmp = 0;
+ L_tmp1 = 0;
+ p1 = a;
+ p2 = &sig_lo[i - 1];
+ p3 = &sig_hi[i - 1];
+
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+ L_tmp -= vo_mult32((*p2--), (*p1));
+ L_tmp1 -= vo_mult32((*p3--), (*p1++));
+
+ L_tmp = L_tmp >> 11;
+ L_tmp += vo_L_mult(exc[i], a0);
+
+ /* sig_hi = bit16 to bit31 of synthesis */
+ L_tmp = L_tmp - (L_tmp1<<1);
+
+ L_tmp = L_tmp >> 3; /* ai in Q12 */
+ sig_hi[i] = extract_h(L_tmp);
+
+ /* sig_lo = bit4 to bit15 of synthesis */
+ L_tmp >>= 4; /* 4 : sig_lo[i] >> 4 */
+ sig_lo[i] = (Word16)((L_tmp - (sig_hi[i] << 13)));
+ }
+
+ return;
+}
+
+
+
+
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