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Diffstat (limited to 'media/libstagefright/codecs/aacenc/basic_op/oper_32b.h')
-rw-r--r-- | media/libstagefright/codecs/aacenc/basic_op/oper_32b.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/aacenc/basic_op/oper_32b.h b/media/libstagefright/codecs/aacenc/basic_op/oper_32b.h new file mode 100644 index 0000000..6e5844f --- /dev/null +++ b/media/libstagefright/codecs/aacenc/basic_op/oper_32b.h @@ -0,0 +1,89 @@ +/* + ** 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: oper_32b.h + + Content: Double precision operations + +*******************************************************************************/ + +#ifndef __OPER_32b_H +#define __OPER_32b_H + +#include "typedef.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define POW2_TABLE_BITS 8 +#define POW2_TABLE_SIZE (1<<POW2_TABLE_BITS) + +void L_Extract (Word32 L_32, Word16 *hi, Word16 *lo); +Word32 L_Comp (Word16 hi, Word16 lo); +Word32 Mpy_32 (Word16 hi1, Word16 lo1, Word16 hi2, Word16 lo2); +Word32 Mpy_32_16 (Word16 hi, Word16 lo, Word16 n); +Word32 Div_32 (Word32 L_num, Word32 denom); +Word16 iLog4(Word32 value); +Word32 rsqrt(Word32 value, Word32 accuracy); +Word32 pow2_xy(Word32 x, Word32 y); + +__inline Word32 L_mpy_ls(Word32 L_var2, Word16 var1) +{ + unsigned short swLow1; + Word16 swHigh1; + Word32 l_var_out; + + swLow1 = (unsigned short)(L_var2); + swHigh1 = (Word16)(L_var2 >> 16); + + l_var_out = (long)swLow1 * (long)var1 >> 15; + + l_var_out += swHigh1 * var1 << 1; + + return(l_var_out); +} + +__inline Word32 L_mpy_wx(Word32 L_var2, Word16 var1) +{ +#if ARMV5TE_L_MPY_LS + Word32 result; + asm volatile( + "SMULWB %[result], %[L_var2], %[var1] \n" + :[result]"=r"(result) + :[L_var2]"r"(L_var2), [var1]"r"(var1) + ); + return result; +#else + unsigned short swLow1; + Word16 swHigh1; + Word32 l_var_out; + + swLow1 = (unsigned short)(L_var2); + swHigh1 = (Word16)(L_var2 >> 16); + + l_var_out = (long)swLow1 * (long)var1 >> 16; + l_var_out += swHigh1 * var1; + + return(l_var_out); +#endif +} + +#ifdef __cplusplus +} +#endif + +#endif |