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arch.h

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00001 /* Copyright (C) 2003 Jean-Marc Valin */ 00006 /* 00007 Redistribution and use in source and binary forms, with or without 00008 modification, are permitted provided that the following conditions 00009 are met: 00010 00011 - Redistributions of source code must retain the above copyright 00012 notice, this list of conditions and the following disclaimer. 00013 00014 - Redistributions in binary form must reproduce the above copyright 00015 notice, this list of conditions and the following disclaimer in the 00016 documentation and/or other materials provided with the distribution. 00017 00018 - Neither the name of the Xiph.org Foundation nor the names of its 00019 contributors may be used to endorse or promote products derived from 00020 this software without specific prior written permission. 00021 00022 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00023 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00024 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00025 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 00026 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00027 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00028 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00029 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00030 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00031 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00032 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00033 */ 00034 00035 #ifndef ARCH_H 00036 #define ARCH_H 00037 00038 #define ABS(x) ((x) < 0 ? (-(x)) : (x)) 00039 00040 #ifdef FIXED_POINT 00041 00042 typedef signed short spx_word16_t; 00043 typedef signed int spx_word32_t; 00044 typedef long long spx_word64_t; 00045 typedef spx_word32_t spx_mem_t; 00046 typedef spx_word16_t spx_coef_t; 00047 typedef spx_word16_t spx_lsp_t; 00048 typedef spx_word32_t spx_sig_t; 00049 00050 #define LPC_SCALING 8192 00051 #define SIG_SCALING 16384 00052 #define LSP_SCALING 8192. 00053 #define GAMMA_SCALING 32768. 00054 #define GAIN_SCALING 64 00055 #define GAIN_SCALING_1 0.015625 00056 00057 #define LPC_SHIFT 13 00058 #define SIG_SHIFT 14 00059 00060 #define VERY_SMALL 0 00061 00062 00063 #ifdef ARM_ASM 00064 #include "fixed_arm.h" 00065 #elif defined (FIXED_DEBUG) 00066 #include "fixed_debug.h" 00067 #else 00068 #include "fixed_generic.h" 00069 #endif 00070 00071 00072 00073 #else 00074 00075 typedef float spx_mem_t; 00076 typedef float spx_coef_t; 00077 typedef float spx_lsp_t; 00078 typedef float spx_sig_t; 00079 typedef float spx_word16_t; 00080 typedef float spx_word32_t; 00081 typedef float spx_word64_t; 00082 00083 #define LPC_SCALING 1. 00084 #define SIG_SCALING 1. 00085 #define LSP_SCALING 1. 00086 #define GAMMA_SCALING 1. 00087 #define GAIN_SCALING 1. 00088 #define GAIN_SCALING_1 1. 00089 00090 #define LPC_SHIFT 0 00091 #define SIG_SHIFT 0 00092 00093 #define VERY_SMALL 1e-30 00094 00095 #define PSHR(a,shift) (a) 00096 #define SHR(a,shift) (a) 00097 #define SHL(a,shift) (a) 00098 #define SATURATE(x,a) (x) 00099 00100 #define ADD16(a,b) ((a)+(b)) 00101 #define SUB16(a,b) ((a)-(b)) 00102 #define ADD32(a,b) ((a)+(b)) 00103 #define SUB32(a,b) ((a)-(b)) 00104 #define ADD64(a,b) ((a)+(b)) 00105 #define MULT16_16_16(a,b) ((a)*(b)) 00106 #define MULT16_16(a,b) ((a)*(b)) 00107 #define MAC16_16(c,a,b) ((c)+(a)*(b)) 00108 00109 #define MULT16_32_Q11(a,b) ((a)*(b)) 00110 #define MULT16_32_Q13(a,b) ((a)*(b)) 00111 #define MULT16_32_Q14(a,b) ((a)*(b)) 00112 #define MULT16_32_Q15(a,b) ((a)*(b)) 00113 00114 #define MAC16_32_Q11(c,a,b) ((c)+(a)*(b)) 00115 #define MAC16_32_Q15(c,a,b) ((c)+(a)*(b)) 00116 00117 #define MAC16_16_Q11(c,a,b) ((c)+(a)*(b)) 00118 #define MULT16_16_Q11(a,b) ((a)*(b)) 00119 #define MULT16_16_Q13(a,b) ((a)*(b)) 00120 #define MULT16_16_Q14(a,b) ((a)*(b)) 00121 #define MULT16_16_Q15(a,b) ((a)*(b)) 00122 00123 #define DIV32_16(a,b) ((a)/(b)) 00124 #define DIV32(a,b) ((a)/(b)) 00125 00126 00127 #endif 00128 00129 00130 00131 #endif

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