diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/voicefac.c')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/voicefac.c | 184 |
1 files changed, 92 insertions, 92 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/voicefac.c b/media/libstagefright/codecs/amrwbenc/src/voicefac.c index 187d774..17e4e55 100644 --- a/media/libstagefright/codecs/amrwbenc/src/voicefac.c +++ b/media/libstagefright/codecs/amrwbenc/src/voicefac.c @@ -1,92 +1,92 @@ -/*
- ** 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: voicefac.c *
-* *
-* Description: Find the voicing factors (1 = voice to -1 = unvoiced) *
-* *
-************************************************************************/
-
-#include "typedef.h"
-#include "basic_op.h"
-#include "math_op.h"
-
-Word16 voice_factor( /* (o) Q15 : factor (-1=unvoiced to 1=voiced) */
- Word16 exc[], /* (i) Q_exc : pitch excitation */
- Word16 Q_exc, /* (i) : exc format */
- Word16 gain_pit, /* (i) Q14 : gain of pitch */
- Word16 code[], /* (i) Q9 : Fixed codebook excitation */
- Word16 gain_code, /* (i) Q0 : gain of code */
- Word16 L_subfr /* (i) : subframe length */
- )
-{
- Word16 tmp, exp, ener1, exp1, ener2, exp2;
- Word32 i, L_tmp;
-
-#ifdef ASM_OPT /* asm optimization branch */
- ener1 = extract_h(Dot_product12_asm(exc, exc, L_subfr, &exp1));
-#else
- ener1 = extract_h(Dot_product12(exc, exc, L_subfr, &exp1));
-#endif
- exp1 = exp1 - (Q_exc + Q_exc);
- L_tmp = vo_L_mult(gain_pit, gain_pit);
- exp = norm_l(L_tmp);
- tmp = extract_h(L_tmp << exp);
- ener1 = vo_mult(ener1, tmp);
- exp1 = exp1 - exp - 10; /* 10 -> gain_pit Q14 to Q9 */
-
-#ifdef ASM_OPT /* asm optimization branch */
- ener2 = extract_h(Dot_product12_asm(code, code, L_subfr, &exp2));
-#else
- ener2 = extract_h(Dot_product12(code, code, L_subfr, &exp2));
-#endif
-
- exp = norm_s(gain_code);
- tmp = gain_code << exp;
- tmp = vo_mult(tmp, tmp);
- ener2 = vo_mult(ener2, tmp);
- exp2 = exp2 - (exp + exp);
-
- i = exp1 - exp2;
-
- if (i >= 0)
- {
- ener1 = ener1 >> 1;
- ener2 = ener2 >> (i + 1);
- } else
- {
- ener1 = ener1 >> (1 - i);
- ener2 = ener2 >> 1;
- }
-
- tmp = vo_sub(ener1, ener2);
- ener1 = add1(add1(ener1, ener2), 1);
-
- if (tmp >= 0)
- {
- tmp = div_s(tmp, ener1);
- } else
- {
- tmp = vo_negate(div_s(vo_negate(tmp), ener1));
- }
-
- return (tmp);
-}
-
-
-
-
+/* + ** 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: voicefac.c * +* * +* Description: Find the voicing factors (1 = voice to -1 = unvoiced) * +* * +************************************************************************/ + +#include "typedef.h" +#include "basic_op.h" +#include "math_op.h" + +Word16 voice_factor( /* (o) Q15 : factor (-1=unvoiced to 1=voiced) */ + Word16 exc[], /* (i) Q_exc : pitch excitation */ + Word16 Q_exc, /* (i) : exc format */ + Word16 gain_pit, /* (i) Q14 : gain of pitch */ + Word16 code[], /* (i) Q9 : Fixed codebook excitation */ + Word16 gain_code, /* (i) Q0 : gain of code */ + Word16 L_subfr /* (i) : subframe length */ + ) +{ + Word16 tmp, exp, ener1, exp1, ener2, exp2; + Word32 i, L_tmp; + +#ifdef ASM_OPT /* asm optimization branch */ + ener1 = extract_h(Dot_product12_asm(exc, exc, L_subfr, &exp1)); +#else + ener1 = extract_h(Dot_product12(exc, exc, L_subfr, &exp1)); +#endif + exp1 = exp1 - (Q_exc + Q_exc); + L_tmp = vo_L_mult(gain_pit, gain_pit); + exp = norm_l(L_tmp); + tmp = extract_h(L_tmp << exp); + ener1 = vo_mult(ener1, tmp); + exp1 = exp1 - exp - 10; /* 10 -> gain_pit Q14 to Q9 */ + +#ifdef ASM_OPT /* asm optimization branch */ + ener2 = extract_h(Dot_product12_asm(code, code, L_subfr, &exp2)); +#else + ener2 = extract_h(Dot_product12(code, code, L_subfr, &exp2)); +#endif + + exp = norm_s(gain_code); + tmp = gain_code << exp; + tmp = vo_mult(tmp, tmp); + ener2 = vo_mult(ener2, tmp); + exp2 = exp2 - (exp + exp); + + i = exp1 - exp2; + + if (i >= 0) + { + ener1 = ener1 >> 1; + ener2 = ener2 >> (i + 1); + } else + { + ener1 = ener1 >> (1 - i); + ener2 = ener2 >> 1; + } + + tmp = vo_sub(ener1, ener2); + ener1 = add1(add1(ener1, ener2), 1); + + if (tmp >= 0) + { + tmp = div_s(tmp, ener1); + } else + { + tmp = vo_negate(div_s(vo_negate(tmp), ener1)); + } + + return (tmp); +} + + + + |