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Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/inc/math_op.h')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/inc/math_op.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/inc/math_op.h b/media/libstagefright/codecs/amrwbenc/inc/math_op.h new file mode 100644 index 0000000..7b6196b --- /dev/null +++ b/media/libstagefright/codecs/amrwbenc/inc/math_op.h @@ -0,0 +1,55 @@ +/* + ** 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. + */ + + +/*--------------------------------------------------------------------------* + * MATH_OP.H * + *--------------------------------------------------------------------------* + * Mathematical operations * + *--------------------------------------------------------------------------*/ + +#ifndef __MATH_OP_H__ +#define __MATH_OP_H__ + +Word32 Isqrt( /* (o) Q31 : output value (range: 0<=val<1) */ + Word32 L_x /* (i) Q0 : input value (range: 0<=val<=7fffffff) */ + ); + +void Isqrt_n( + Word32 * frac, /* (i/o) Q31: normalized value (1.0 < frac <= 0.5) */ + Word16 * exp /* (i/o) : exponent (value = frac x 2^exponent) */ + ); + +Word32 Pow2( /* (o) Q0 : result (range: 0<=val<=0x7fffffff) */ + Word16 exponant, /* (i) Q0 : Integer part. (range: 0<=val<=30) */ + Word16 fraction /* (i) Q15 : Fractionnal part. (range: 0.0<=val<1.0) */ + ); + +Word32 Dot_product12( /* (o) Q31: normalized result (1 < val <= -1) */ + Word16 x[], /* (i) 12bits: x vector */ + Word16 y[], /* (i) 12bits: y vector */ + Word16 lg, /* (i) : vector length */ + Word16 * exp /* (o) : exponent of result (0..+30) */ + ); + +Word32 Dot_product12_asm( /* (o) Q31: normalized result (1 < val <= -1) */ + Word16 x[], /* (i) 12bits: x vector */ + Word16 y[], /* (i) 12bits: y vector */ + Word16 lg, /* (i) : vector length */ + Word16 * exp /* (o) : exponent of result (0..+30) */ + ); +#endif //__MATH_OP_H__ + |