MP3 Player. You can change fwd/rev speed and skip. see: http://mbed.org/users/okini3939/notebook/lpc4088_madplayer/
Dependencies: I2SSlave SDFileSystem TLV320 mbed
madplayer/mad.h@0:8ba6230eefbd, 2014-02-18 (annotated)
- Committer:
- okini3939
- Date:
- Tue Feb 18 00:22:50 2014 +0000
- Revision:
- 0:8ba6230eefbd
1st build
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
okini3939 | 0:8ba6230eefbd | 1 | /* |
okini3939 | 0:8ba6230eefbd | 2 | * libmad - MPEG audio decoder library |
okini3939 | 0:8ba6230eefbd | 3 | * Copyright (C) 2000-2004 Underbit Technologies, Inc. |
okini3939 | 0:8ba6230eefbd | 4 | * |
okini3939 | 0:8ba6230eefbd | 5 | * This program is free software; you can redistribute it and/or modify |
okini3939 | 0:8ba6230eefbd | 6 | * it under the terms of the GNU General Public License as published by |
okini3939 | 0:8ba6230eefbd | 7 | * the Free Software Foundation; either version 2 of the License, or |
okini3939 | 0:8ba6230eefbd | 8 | * (at your option) any later version. |
okini3939 | 0:8ba6230eefbd | 9 | * |
okini3939 | 0:8ba6230eefbd | 10 | * This program is distributed in the hope that it will be useful, |
okini3939 | 0:8ba6230eefbd | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
okini3939 | 0:8ba6230eefbd | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
okini3939 | 0:8ba6230eefbd | 13 | * GNU General Public License for more details. |
okini3939 | 0:8ba6230eefbd | 14 | * |
okini3939 | 0:8ba6230eefbd | 15 | * You should have received a copy of the GNU General Public License |
okini3939 | 0:8ba6230eefbd | 16 | * along with this program; if not, write to the Free Software |
okini3939 | 0:8ba6230eefbd | 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
okini3939 | 0:8ba6230eefbd | 18 | * |
okini3939 | 0:8ba6230eefbd | 19 | * If you would like to negotiate alternate licensing terms, you may do |
okini3939 | 0:8ba6230eefbd | 20 | * so by contacting: Underbit Technologies, Inc. <info@underbit.com> |
okini3939 | 0:8ba6230eefbd | 21 | */ |
okini3939 | 0:8ba6230eefbd | 22 | |
okini3939 | 0:8ba6230eefbd | 23 | # ifdef __cplusplus |
okini3939 | 0:8ba6230eefbd | 24 | extern "C" { |
okini3939 | 0:8ba6230eefbd | 25 | # endif |
okini3939 | 0:8ba6230eefbd | 26 | |
okini3939 | 0:8ba6230eefbd | 27 | # define FPM_INTEL |
okini3939 | 0:8ba6230eefbd | 28 | |
okini3939 | 0:8ba6230eefbd | 29 | |
okini3939 | 0:8ba6230eefbd | 30 | |
okini3939 | 0:8ba6230eefbd | 31 | # define SIZEOF_INT 4 |
okini3939 | 0:8ba6230eefbd | 32 | # define SIZEOF_LONG 4 |
okini3939 | 0:8ba6230eefbd | 33 | # define SIZEOF_LONG_LONG 8 |
okini3939 | 0:8ba6230eefbd | 34 | |
okini3939 | 0:8ba6230eefbd | 35 | |
okini3939 | 0:8ba6230eefbd | 36 | /* Id: version.h,v 1.26 2004/01/23 09:41:33 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 37 | |
okini3939 | 0:8ba6230eefbd | 38 | # ifndef LIBMAD_VERSION_H |
okini3939 | 0:8ba6230eefbd | 39 | # define LIBMAD_VERSION_H |
okini3939 | 0:8ba6230eefbd | 40 | |
okini3939 | 0:8ba6230eefbd | 41 | # define MAD_VERSION_MAJOR 0 |
okini3939 | 0:8ba6230eefbd | 42 | # define MAD_VERSION_MINOR 15 |
okini3939 | 0:8ba6230eefbd | 43 | # define MAD_VERSION_PATCH 1 |
okini3939 | 0:8ba6230eefbd | 44 | # define MAD_VERSION_EXTRA " (beta)" |
okini3939 | 0:8ba6230eefbd | 45 | |
okini3939 | 0:8ba6230eefbd | 46 | # define MAD_VERSION_STRINGIZE(str) #str |
okini3939 | 0:8ba6230eefbd | 47 | # define MAD_VERSION_STRING(num) MAD_VERSION_STRINGIZE(num) |
okini3939 | 0:8ba6230eefbd | 48 | |
okini3939 | 0:8ba6230eefbd | 49 | # define MAD_VERSION MAD_VERSION_STRING(MAD_VERSION_MAJOR) "." \ |
okini3939 | 0:8ba6230eefbd | 50 | MAD_VERSION_STRING(MAD_VERSION_MINOR) "." \ |
okini3939 | 0:8ba6230eefbd | 51 | MAD_VERSION_STRING(MAD_VERSION_PATCH) \ |
okini3939 | 0:8ba6230eefbd | 52 | MAD_VERSION_EXTRA |
okini3939 | 0:8ba6230eefbd | 53 | |
okini3939 | 0:8ba6230eefbd | 54 | # define MAD_PUBLISHYEAR "2000-2004" |
okini3939 | 0:8ba6230eefbd | 55 | # define MAD_AUTHOR "Underbit Technologies, Inc." |
okini3939 | 0:8ba6230eefbd | 56 | # define MAD_EMAIL "info@underbit.com" |
okini3939 | 0:8ba6230eefbd | 57 | |
okini3939 | 0:8ba6230eefbd | 58 | extern char const mad_version[]; |
okini3939 | 0:8ba6230eefbd | 59 | extern char const mad_copyright[]; |
okini3939 | 0:8ba6230eefbd | 60 | extern char const mad_author[]; |
okini3939 | 0:8ba6230eefbd | 61 | extern char const mad_build[]; |
okini3939 | 0:8ba6230eefbd | 62 | |
okini3939 | 0:8ba6230eefbd | 63 | # endif |
okini3939 | 0:8ba6230eefbd | 64 | |
okini3939 | 0:8ba6230eefbd | 65 | /* Id: fixed.h,v 1.38 2004/02/17 02:02:03 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 66 | |
okini3939 | 0:8ba6230eefbd | 67 | # ifndef LIBMAD_FIXED_H |
okini3939 | 0:8ba6230eefbd | 68 | # define LIBMAD_FIXED_H |
okini3939 | 0:8ba6230eefbd | 69 | |
okini3939 | 0:8ba6230eefbd | 70 | # if SIZEOF_INT >= 4 |
okini3939 | 0:8ba6230eefbd | 71 | typedef signed int mad_fixed_t; |
okini3939 | 0:8ba6230eefbd | 72 | |
okini3939 | 0:8ba6230eefbd | 73 | typedef signed int mad_fixed64hi_t; |
okini3939 | 0:8ba6230eefbd | 74 | typedef unsigned int mad_fixed64lo_t; |
okini3939 | 0:8ba6230eefbd | 75 | # else |
okini3939 | 0:8ba6230eefbd | 76 | typedef signed long mad_fixed_t; |
okini3939 | 0:8ba6230eefbd | 77 | |
okini3939 | 0:8ba6230eefbd | 78 | typedef signed long mad_fixed64hi_t; |
okini3939 | 0:8ba6230eefbd | 79 | typedef unsigned long mad_fixed64lo_t; |
okini3939 | 0:8ba6230eefbd | 80 | # endif |
okini3939 | 0:8ba6230eefbd | 81 | |
okini3939 | 0:8ba6230eefbd | 82 | # if defined(_MSC_VER) |
okini3939 | 0:8ba6230eefbd | 83 | # define mad_fixed64_t signed __int64 |
okini3939 | 0:8ba6230eefbd | 84 | # elif 1 || defined(__GNUC__) |
okini3939 | 0:8ba6230eefbd | 85 | # define mad_fixed64_t signed long long |
okini3939 | 0:8ba6230eefbd | 86 | # endif |
okini3939 | 0:8ba6230eefbd | 87 | |
okini3939 | 0:8ba6230eefbd | 88 | # if defined(FPM_FLOAT) |
okini3939 | 0:8ba6230eefbd | 89 | typedef double mad_sample_t; |
okini3939 | 0:8ba6230eefbd | 90 | # else |
okini3939 | 0:8ba6230eefbd | 91 | typedef mad_fixed_t mad_sample_t; |
okini3939 | 0:8ba6230eefbd | 92 | # endif |
okini3939 | 0:8ba6230eefbd | 93 | |
okini3939 | 0:8ba6230eefbd | 94 | /* |
okini3939 | 0:8ba6230eefbd | 95 | * Fixed-point format: 0xABBBBBBB |
okini3939 | 0:8ba6230eefbd | 96 | * A == whole part (sign + 3 bits) |
okini3939 | 0:8ba6230eefbd | 97 | * B == fractional part (28 bits) |
okini3939 | 0:8ba6230eefbd | 98 | * |
okini3939 | 0:8ba6230eefbd | 99 | * Values are signed two's complement, so the effective range is: |
okini3939 | 0:8ba6230eefbd | 100 | * 0x80000000 to 0x7fffffff |
okini3939 | 0:8ba6230eefbd | 101 | * -8.0 to +7.9999999962747097015380859375 |
okini3939 | 0:8ba6230eefbd | 102 | * |
okini3939 | 0:8ba6230eefbd | 103 | * The smallest representable value is: |
okini3939 | 0:8ba6230eefbd | 104 | * 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9) |
okini3939 | 0:8ba6230eefbd | 105 | * |
okini3939 | 0:8ba6230eefbd | 106 | * 28 bits of fractional accuracy represent about |
okini3939 | 0:8ba6230eefbd | 107 | * 8.6 digits of decimal accuracy. |
okini3939 | 0:8ba6230eefbd | 108 | * |
okini3939 | 0:8ba6230eefbd | 109 | * Fixed-point numbers can be added or subtracted as normal |
okini3939 | 0:8ba6230eefbd | 110 | * integers, but multiplication requires shifting the 64-bit result |
okini3939 | 0:8ba6230eefbd | 111 | * from 56 fractional bits back to 28 (and rounding.) |
okini3939 | 0:8ba6230eefbd | 112 | * |
okini3939 | 0:8ba6230eefbd | 113 | * Changing the definition of MAD_F_FRACBITS is only partially |
okini3939 | 0:8ba6230eefbd | 114 | * supported, and must be done with care. |
okini3939 | 0:8ba6230eefbd | 115 | */ |
okini3939 | 0:8ba6230eefbd | 116 | |
okini3939 | 0:8ba6230eefbd | 117 | # define MAD_F_FRACBITS 28 |
okini3939 | 0:8ba6230eefbd | 118 | |
okini3939 | 0:8ba6230eefbd | 119 | # if MAD_F_FRACBITS == 28 |
okini3939 | 0:8ba6230eefbd | 120 | # define MAD_F(x) ((mad_fixed_t) (x##L)) |
okini3939 | 0:8ba6230eefbd | 121 | # else |
okini3939 | 0:8ba6230eefbd | 122 | # if MAD_F_FRACBITS < 28 |
okini3939 | 0:8ba6230eefbd | 123 | # warning "MAD_F_FRACBITS < 28" |
okini3939 | 0:8ba6230eefbd | 124 | # define MAD_F(x) ((mad_fixed_t) \ |
okini3939 | 0:8ba6230eefbd | 125 | (((x##L) + \ |
okini3939 | 0:8ba6230eefbd | 126 | (1L << (28 - MAD_F_FRACBITS - 1))) >> \ |
okini3939 | 0:8ba6230eefbd | 127 | (28 - MAD_F_FRACBITS))) |
okini3939 | 0:8ba6230eefbd | 128 | # elif MAD_F_FRACBITS > 28 |
okini3939 | 0:8ba6230eefbd | 129 | # error "MAD_F_FRACBITS > 28 not currently supported" |
okini3939 | 0:8ba6230eefbd | 130 | # define MAD_F(x) ((mad_fixed_t) \ |
okini3939 | 0:8ba6230eefbd | 131 | ((x##L) << (MAD_F_FRACBITS - 28))) |
okini3939 | 0:8ba6230eefbd | 132 | # endif |
okini3939 | 0:8ba6230eefbd | 133 | # endif |
okini3939 | 0:8ba6230eefbd | 134 | |
okini3939 | 0:8ba6230eefbd | 135 | # define MAD_F_MIN ((mad_fixed_t) -0x80000000L) |
okini3939 | 0:8ba6230eefbd | 136 | # define MAD_F_MAX ((mad_fixed_t) +0x7fffffffL) |
okini3939 | 0:8ba6230eefbd | 137 | |
okini3939 | 0:8ba6230eefbd | 138 | # define MAD_F_ONE MAD_F(0x10000000) |
okini3939 | 0:8ba6230eefbd | 139 | |
okini3939 | 0:8ba6230eefbd | 140 | # define mad_f_tofixed(x) ((mad_fixed_t) \ |
okini3939 | 0:8ba6230eefbd | 141 | ((x) * (double) (1L << MAD_F_FRACBITS) + 0.5)) |
okini3939 | 0:8ba6230eefbd | 142 | # define mad_f_todouble(x) ((double) \ |
okini3939 | 0:8ba6230eefbd | 143 | ((x) / (double) (1L << MAD_F_FRACBITS))) |
okini3939 | 0:8ba6230eefbd | 144 | |
okini3939 | 0:8ba6230eefbd | 145 | # define mad_f_intpart(x) ((x) >> MAD_F_FRACBITS) |
okini3939 | 0:8ba6230eefbd | 146 | # define mad_f_fracpart(x) ((x) & ((1L << MAD_F_FRACBITS) - 1)) |
okini3939 | 0:8ba6230eefbd | 147 | /* (x should be positive) */ |
okini3939 | 0:8ba6230eefbd | 148 | |
okini3939 | 0:8ba6230eefbd | 149 | # define mad_f_fromint(x) ((x) << MAD_F_FRACBITS) |
okini3939 | 0:8ba6230eefbd | 150 | |
okini3939 | 0:8ba6230eefbd | 151 | # define mad_f_add(x, y) ((x) + (y)) |
okini3939 | 0:8ba6230eefbd | 152 | # define mad_f_sub(x, y) ((x) - (y)) |
okini3939 | 0:8ba6230eefbd | 153 | |
okini3939 | 0:8ba6230eefbd | 154 | # if defined(FPM_FLOAT) |
okini3939 | 0:8ba6230eefbd | 155 | # error "FPM_FLOAT not yet supported" |
okini3939 | 0:8ba6230eefbd | 156 | |
okini3939 | 0:8ba6230eefbd | 157 | # undef MAD_F |
okini3939 | 0:8ba6230eefbd | 158 | # define MAD_F(x) mad_f_todouble(x) |
okini3939 | 0:8ba6230eefbd | 159 | |
okini3939 | 0:8ba6230eefbd | 160 | # define mad_f_mul(x, y) ((x) * (y)) |
okini3939 | 0:8ba6230eefbd | 161 | # define mad_f_scale64 |
okini3939 | 0:8ba6230eefbd | 162 | |
okini3939 | 0:8ba6230eefbd | 163 | # undef ASO_ZEROCHECK |
okini3939 | 0:8ba6230eefbd | 164 | |
okini3939 | 0:8ba6230eefbd | 165 | # elif defined(FPM_64BIT) |
okini3939 | 0:8ba6230eefbd | 166 | |
okini3939 | 0:8ba6230eefbd | 167 | /* |
okini3939 | 0:8ba6230eefbd | 168 | * This version should be the most accurate if 64-bit types are supported by |
okini3939 | 0:8ba6230eefbd | 169 | * the compiler, although it may not be the most efficient. |
okini3939 | 0:8ba6230eefbd | 170 | */ |
okini3939 | 0:8ba6230eefbd | 171 | # if defined(OPT_ACCURACY) |
okini3939 | 0:8ba6230eefbd | 172 | # define mad_f_mul(x, y) \ |
okini3939 | 0:8ba6230eefbd | 173 | ((mad_fixed_t) \ |
okini3939 | 0:8ba6230eefbd | 174 | ((((mad_fixed64_t) (x) * (y)) + \ |
okini3939 | 0:8ba6230eefbd | 175 | (1L << (MAD_F_SCALEBITS - 1))) >> MAD_F_SCALEBITS)) |
okini3939 | 0:8ba6230eefbd | 176 | # else |
okini3939 | 0:8ba6230eefbd | 177 | # define mad_f_mul(x, y) \ |
okini3939 | 0:8ba6230eefbd | 178 | ((mad_fixed_t) (((mad_fixed64_t) (x) * (y)) >> MAD_F_SCALEBITS)) |
okini3939 | 0:8ba6230eefbd | 179 | # endif |
okini3939 | 0:8ba6230eefbd | 180 | |
okini3939 | 0:8ba6230eefbd | 181 | # define MAD_F_SCALEBITS MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 182 | |
okini3939 | 0:8ba6230eefbd | 183 | /* --- Intel --------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 184 | |
okini3939 | 0:8ba6230eefbd | 185 | # elif defined(FPM_INTEL) |
okini3939 | 0:8ba6230eefbd | 186 | |
okini3939 | 0:8ba6230eefbd | 187 | # if defined(_MSC_VER) |
okini3939 | 0:8ba6230eefbd | 188 | # pragma warning(push) |
okini3939 | 0:8ba6230eefbd | 189 | # pragma warning(disable: 4035) /* no return value */ |
okini3939 | 0:8ba6230eefbd | 190 | static __forceinline |
okini3939 | 0:8ba6230eefbd | 191 | mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y) |
okini3939 | 0:8ba6230eefbd | 192 | { |
okini3939 | 0:8ba6230eefbd | 193 | enum { |
okini3939 | 0:8ba6230eefbd | 194 | fracbits = MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 195 | }; |
okini3939 | 0:8ba6230eefbd | 196 | |
okini3939 | 0:8ba6230eefbd | 197 | __asm { |
okini3939 | 0:8ba6230eefbd | 198 | mov eax, x |
okini3939 | 0:8ba6230eefbd | 199 | imul y |
okini3939 | 0:8ba6230eefbd | 200 | shrd eax, edx, fracbits |
okini3939 | 0:8ba6230eefbd | 201 | } |
okini3939 | 0:8ba6230eefbd | 202 | |
okini3939 | 0:8ba6230eefbd | 203 | /* implicit return of eax */ |
okini3939 | 0:8ba6230eefbd | 204 | } |
okini3939 | 0:8ba6230eefbd | 205 | # pragma warning(pop) |
okini3939 | 0:8ba6230eefbd | 206 | |
okini3939 | 0:8ba6230eefbd | 207 | # define mad_f_mul mad_f_mul_inline |
okini3939 | 0:8ba6230eefbd | 208 | # define mad_f_scale64 |
okini3939 | 0:8ba6230eefbd | 209 | # else |
okini3939 | 0:8ba6230eefbd | 210 | /* |
okini3939 | 0:8ba6230eefbd | 211 | * This Intel version is fast and accurate; the disposition of the least |
okini3939 | 0:8ba6230eefbd | 212 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). |
okini3939 | 0:8ba6230eefbd | 213 | */ |
okini3939 | 0:8ba6230eefbd | 214 | # define MAD_F_MLX(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 215 | asm ("imull %3" \ |
okini3939 | 0:8ba6230eefbd | 216 | : "=a" (lo), "=d" (hi) \ |
okini3939 | 0:8ba6230eefbd | 217 | : "%a" (x), "rm" (y) \ |
okini3939 | 0:8ba6230eefbd | 218 | : "cc") |
okini3939 | 0:8ba6230eefbd | 219 | |
okini3939 | 0:8ba6230eefbd | 220 | # if defined(OPT_ACCURACY) |
okini3939 | 0:8ba6230eefbd | 221 | /* |
okini3939 | 0:8ba6230eefbd | 222 | * This gives best accuracy but is not very fast. |
okini3939 | 0:8ba6230eefbd | 223 | */ |
okini3939 | 0:8ba6230eefbd | 224 | # define MAD_F_MLA(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 225 | ({ mad_fixed64hi_t __hi; \ |
okini3939 | 0:8ba6230eefbd | 226 | mad_fixed64lo_t __lo; \ |
okini3939 | 0:8ba6230eefbd | 227 | MAD_F_MLX(__hi, __lo, (x), (y)); \ |
okini3939 | 0:8ba6230eefbd | 228 | asm ("addl %2,%0\n\t" \ |
okini3939 | 0:8ba6230eefbd | 229 | "adcl %3,%1" \ |
okini3939 | 0:8ba6230eefbd | 230 | : "=rm" (lo), "=rm" (hi) \ |
okini3939 | 0:8ba6230eefbd | 231 | : "r" (__lo), "r" (__hi), "0" (lo), "1" (hi) \ |
okini3939 | 0:8ba6230eefbd | 232 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 233 | }) |
okini3939 | 0:8ba6230eefbd | 234 | # endif /* OPT_ACCURACY */ |
okini3939 | 0:8ba6230eefbd | 235 | |
okini3939 | 0:8ba6230eefbd | 236 | # if defined(OPT_ACCURACY) |
okini3939 | 0:8ba6230eefbd | 237 | /* |
okini3939 | 0:8ba6230eefbd | 238 | * Surprisingly, this is faster than SHRD followed by ADC. |
okini3939 | 0:8ba6230eefbd | 239 | */ |
okini3939 | 0:8ba6230eefbd | 240 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 241 | ({ mad_fixed64hi_t __hi_; \ |
okini3939 | 0:8ba6230eefbd | 242 | mad_fixed64lo_t __lo_; \ |
okini3939 | 0:8ba6230eefbd | 243 | mad_fixed_t __result; \ |
okini3939 | 0:8ba6230eefbd | 244 | asm ("addl %4,%2\n\t" \ |
okini3939 | 0:8ba6230eefbd | 245 | "adcl %5,%3" \ |
okini3939 | 0:8ba6230eefbd | 246 | : "=rm" (__lo_), "=rm" (__hi_) \ |
okini3939 | 0:8ba6230eefbd | 247 | : "0" (lo), "1" (hi), \ |
okini3939 | 0:8ba6230eefbd | 248 | "ir" (1L << (MAD_F_SCALEBITS - 1)), "ir" (0) \ |
okini3939 | 0:8ba6230eefbd | 249 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 250 | asm ("shrdl %3,%2,%1" \ |
okini3939 | 0:8ba6230eefbd | 251 | : "=rm" (__result) \ |
okini3939 | 0:8ba6230eefbd | 252 | : "0" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS) \ |
okini3939 | 0:8ba6230eefbd | 253 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 254 | __result; \ |
okini3939 | 0:8ba6230eefbd | 255 | }) |
okini3939 | 0:8ba6230eefbd | 256 | # elif defined(OPT_INTEL) |
okini3939 | 0:8ba6230eefbd | 257 | /* |
okini3939 | 0:8ba6230eefbd | 258 | * Alternate Intel scaling that may or may not perform better. |
okini3939 | 0:8ba6230eefbd | 259 | */ |
okini3939 | 0:8ba6230eefbd | 260 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 261 | ({ mad_fixed_t __result; \ |
okini3939 | 0:8ba6230eefbd | 262 | asm ("shrl %3,%1\n\t" \ |
okini3939 | 0:8ba6230eefbd | 263 | "shll %4,%2\n\t" \ |
okini3939 | 0:8ba6230eefbd | 264 | "orl %2,%1" \ |
okini3939 | 0:8ba6230eefbd | 265 | : "=rm" (__result) \ |
okini3939 | 0:8ba6230eefbd | 266 | : "0" (lo), "r" (hi), \ |
okini3939 | 0:8ba6230eefbd | 267 | "I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS) \ |
okini3939 | 0:8ba6230eefbd | 268 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 269 | __result; \ |
okini3939 | 0:8ba6230eefbd | 270 | }) |
okini3939 | 0:8ba6230eefbd | 271 | # else |
okini3939 | 0:8ba6230eefbd | 272 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 273 | ({ mad_fixed_t __result; \ |
okini3939 | 0:8ba6230eefbd | 274 | asm ("shrdl %3,%2,%1" \ |
okini3939 | 0:8ba6230eefbd | 275 | : "=rm" (__result) \ |
okini3939 | 0:8ba6230eefbd | 276 | : "0" (lo), "r" (hi), "I" (MAD_F_SCALEBITS) \ |
okini3939 | 0:8ba6230eefbd | 277 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 278 | __result; \ |
okini3939 | 0:8ba6230eefbd | 279 | }) |
okini3939 | 0:8ba6230eefbd | 280 | # endif /* OPT_ACCURACY */ |
okini3939 | 0:8ba6230eefbd | 281 | |
okini3939 | 0:8ba6230eefbd | 282 | # define MAD_F_SCALEBITS MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 283 | # endif |
okini3939 | 0:8ba6230eefbd | 284 | |
okini3939 | 0:8ba6230eefbd | 285 | /* --- ARM ----------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 286 | |
okini3939 | 0:8ba6230eefbd | 287 | # elif defined(FPM_ARM) |
okini3939 | 0:8ba6230eefbd | 288 | |
okini3939 | 0:8ba6230eefbd | 289 | /* |
okini3939 | 0:8ba6230eefbd | 290 | * This ARM V4 version is as accurate as FPM_64BIT but much faster. The |
okini3939 | 0:8ba6230eefbd | 291 | * least significant bit is properly rounded at no CPU cycle cost! |
okini3939 | 0:8ba6230eefbd | 292 | */ |
okini3939 | 0:8ba6230eefbd | 293 | # if 1 |
okini3939 | 0:8ba6230eefbd | 294 | /* |
okini3939 | 0:8ba6230eefbd | 295 | * This is faster than the default implementation via MAD_F_MLX() and |
okini3939 | 0:8ba6230eefbd | 296 | * mad_f_scale64(). |
okini3939 | 0:8ba6230eefbd | 297 | */ |
okini3939 | 0:8ba6230eefbd | 298 | # define mad_f_mul(x, y) \ |
okini3939 | 0:8ba6230eefbd | 299 | ({ mad_fixed64hi_t __hi; \ |
okini3939 | 0:8ba6230eefbd | 300 | mad_fixed64lo_t __lo; \ |
okini3939 | 0:8ba6230eefbd | 301 | mad_fixed_t __result; \ |
okini3939 | 0:8ba6230eefbd | 302 | asm ("smull %0, %1, %3, %4\n\t" \ |
okini3939 | 0:8ba6230eefbd | 303 | "movs %0, %0, lsr %5\n\t" \ |
okini3939 | 0:8ba6230eefbd | 304 | "adc %2, %0, %1, lsl %6" \ |
okini3939 | 0:8ba6230eefbd | 305 | : "=&r" (__lo), "=&r" (__hi), "=r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 306 | : "%r" (x), "r" (y), \ |
okini3939 | 0:8ba6230eefbd | 307 | "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \ |
okini3939 | 0:8ba6230eefbd | 308 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 309 | __result; \ |
okini3939 | 0:8ba6230eefbd | 310 | }) |
okini3939 | 0:8ba6230eefbd | 311 | # endif |
okini3939 | 0:8ba6230eefbd | 312 | |
okini3939 | 0:8ba6230eefbd | 313 | # define MAD_F_MLX(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 314 | asm ("smull %0, %1, %2, %3" \ |
okini3939 | 0:8ba6230eefbd | 315 | : "=&r" (lo), "=&r" (hi) \ |
okini3939 | 0:8ba6230eefbd | 316 | : "%r" (x), "r" (y)) |
okini3939 | 0:8ba6230eefbd | 317 | |
okini3939 | 0:8ba6230eefbd | 318 | # define MAD_F_MLA(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 319 | asm ("smlal %0, %1, %2, %3" \ |
okini3939 | 0:8ba6230eefbd | 320 | : "+r" (lo), "+r" (hi) \ |
okini3939 | 0:8ba6230eefbd | 321 | : "%r" (x), "r" (y)) |
okini3939 | 0:8ba6230eefbd | 322 | |
okini3939 | 0:8ba6230eefbd | 323 | # define MAD_F_MLN(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 324 | asm ("rsbs %0, %2, #0\n\t" \ |
okini3939 | 0:8ba6230eefbd | 325 | "rsc %1, %3, #0" \ |
okini3939 | 0:8ba6230eefbd | 326 | : "=r" (lo), "=r" (hi) \ |
okini3939 | 0:8ba6230eefbd | 327 | : "0" (lo), "1" (hi) \ |
okini3939 | 0:8ba6230eefbd | 328 | : "cc") |
okini3939 | 0:8ba6230eefbd | 329 | |
okini3939 | 0:8ba6230eefbd | 330 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 331 | ({ mad_fixed_t __result; \ |
okini3939 | 0:8ba6230eefbd | 332 | asm ("movs %0, %1, lsr %3\n\t" \ |
okini3939 | 0:8ba6230eefbd | 333 | "adc %0, %0, %2, lsl %4" \ |
okini3939 | 0:8ba6230eefbd | 334 | : "=&r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 335 | : "r" (lo), "r" (hi), \ |
okini3939 | 0:8ba6230eefbd | 336 | "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS) \ |
okini3939 | 0:8ba6230eefbd | 337 | : "cc"); \ |
okini3939 | 0:8ba6230eefbd | 338 | __result; \ |
okini3939 | 0:8ba6230eefbd | 339 | }) |
okini3939 | 0:8ba6230eefbd | 340 | |
okini3939 | 0:8ba6230eefbd | 341 | # define MAD_F_SCALEBITS MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 342 | |
okini3939 | 0:8ba6230eefbd | 343 | /* --- MIPS ---------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 344 | |
okini3939 | 0:8ba6230eefbd | 345 | # elif defined(FPM_MIPS) |
okini3939 | 0:8ba6230eefbd | 346 | |
okini3939 | 0:8ba6230eefbd | 347 | /* |
okini3939 | 0:8ba6230eefbd | 348 | * This MIPS version is fast and accurate; the disposition of the least |
okini3939 | 0:8ba6230eefbd | 349 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). |
okini3939 | 0:8ba6230eefbd | 350 | */ |
okini3939 | 0:8ba6230eefbd | 351 | # define MAD_F_MLX(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 352 | asm ("mult %2,%3" \ |
okini3939 | 0:8ba6230eefbd | 353 | : "=l" (lo), "=h" (hi) \ |
okini3939 | 0:8ba6230eefbd | 354 | : "%r" (x), "r" (y)) |
okini3939 | 0:8ba6230eefbd | 355 | |
okini3939 | 0:8ba6230eefbd | 356 | # if defined(HAVE_MADD_ASM) |
okini3939 | 0:8ba6230eefbd | 357 | # define MAD_F_MLA(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 358 | asm ("madd %2,%3" \ |
okini3939 | 0:8ba6230eefbd | 359 | : "+l" (lo), "+h" (hi) \ |
okini3939 | 0:8ba6230eefbd | 360 | : "%r" (x), "r" (y)) |
okini3939 | 0:8ba6230eefbd | 361 | # elif defined(HAVE_MADD16_ASM) |
okini3939 | 0:8ba6230eefbd | 362 | /* |
okini3939 | 0:8ba6230eefbd | 363 | * This loses significant accuracy due to the 16-bit integer limit in the |
okini3939 | 0:8ba6230eefbd | 364 | * multiply/accumulate instruction. |
okini3939 | 0:8ba6230eefbd | 365 | */ |
okini3939 | 0:8ba6230eefbd | 366 | # define MAD_F_ML0(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 367 | asm ("mult %2,%3" \ |
okini3939 | 0:8ba6230eefbd | 368 | : "=l" (lo), "=h" (hi) \ |
okini3939 | 0:8ba6230eefbd | 369 | : "%r" ((x) >> 12), "r" ((y) >> 16)) |
okini3939 | 0:8ba6230eefbd | 370 | # define MAD_F_MLA(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 371 | asm ("madd16 %2,%3" \ |
okini3939 | 0:8ba6230eefbd | 372 | : "+l" (lo), "+h" (hi) \ |
okini3939 | 0:8ba6230eefbd | 373 | : "%r" ((x) >> 12), "r" ((y) >> 16)) |
okini3939 | 0:8ba6230eefbd | 374 | # define MAD_F_MLZ(hi, lo) ((mad_fixed_t) (lo)) |
okini3939 | 0:8ba6230eefbd | 375 | # endif |
okini3939 | 0:8ba6230eefbd | 376 | |
okini3939 | 0:8ba6230eefbd | 377 | # if defined(OPT_SPEED) |
okini3939 | 0:8ba6230eefbd | 378 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 379 | ((mad_fixed_t) ((hi) << (32 - MAD_F_SCALEBITS))) |
okini3939 | 0:8ba6230eefbd | 380 | # define MAD_F_SCALEBITS MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 381 | # endif |
okini3939 | 0:8ba6230eefbd | 382 | |
okini3939 | 0:8ba6230eefbd | 383 | /* --- SPARC --------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 384 | |
okini3939 | 0:8ba6230eefbd | 385 | # elif defined(FPM_SPARC) |
okini3939 | 0:8ba6230eefbd | 386 | |
okini3939 | 0:8ba6230eefbd | 387 | /* |
okini3939 | 0:8ba6230eefbd | 388 | * This SPARC V8 version is fast and accurate; the disposition of the least |
okini3939 | 0:8ba6230eefbd | 389 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). |
okini3939 | 0:8ba6230eefbd | 390 | */ |
okini3939 | 0:8ba6230eefbd | 391 | # define MAD_F_MLX(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 392 | asm ("smul %2, %3, %0\n\t" \ |
okini3939 | 0:8ba6230eefbd | 393 | "rd %%y, %1" \ |
okini3939 | 0:8ba6230eefbd | 394 | : "=r" (lo), "=r" (hi) \ |
okini3939 | 0:8ba6230eefbd | 395 | : "%r" (x), "rI" (y)) |
okini3939 | 0:8ba6230eefbd | 396 | |
okini3939 | 0:8ba6230eefbd | 397 | /* --- PowerPC ------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 398 | |
okini3939 | 0:8ba6230eefbd | 399 | # elif defined(FPM_PPC) |
okini3939 | 0:8ba6230eefbd | 400 | |
okini3939 | 0:8ba6230eefbd | 401 | /* |
okini3939 | 0:8ba6230eefbd | 402 | * This PowerPC version is fast and accurate; the disposition of the least |
okini3939 | 0:8ba6230eefbd | 403 | * significant bit depends on OPT_ACCURACY via mad_f_scale64(). |
okini3939 | 0:8ba6230eefbd | 404 | */ |
okini3939 | 0:8ba6230eefbd | 405 | # define MAD_F_MLX(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 406 | do { \ |
okini3939 | 0:8ba6230eefbd | 407 | asm ("mullw %0,%1,%2" \ |
okini3939 | 0:8ba6230eefbd | 408 | : "=r" (lo) \ |
okini3939 | 0:8ba6230eefbd | 409 | : "%r" (x), "r" (y)); \ |
okini3939 | 0:8ba6230eefbd | 410 | asm ("mulhw %0,%1,%2" \ |
okini3939 | 0:8ba6230eefbd | 411 | : "=r" (hi) \ |
okini3939 | 0:8ba6230eefbd | 412 | : "%r" (x), "r" (y)); \ |
okini3939 | 0:8ba6230eefbd | 413 | } \ |
okini3939 | 0:8ba6230eefbd | 414 | while (0) |
okini3939 | 0:8ba6230eefbd | 415 | |
okini3939 | 0:8ba6230eefbd | 416 | # if defined(OPT_ACCURACY) |
okini3939 | 0:8ba6230eefbd | 417 | /* |
okini3939 | 0:8ba6230eefbd | 418 | * This gives best accuracy but is not very fast. |
okini3939 | 0:8ba6230eefbd | 419 | */ |
okini3939 | 0:8ba6230eefbd | 420 | # define MAD_F_MLA(hi, lo, x, y) \ |
okini3939 | 0:8ba6230eefbd | 421 | ({ mad_fixed64hi_t __hi; \ |
okini3939 | 0:8ba6230eefbd | 422 | mad_fixed64lo_t __lo; \ |
okini3939 | 0:8ba6230eefbd | 423 | MAD_F_MLX(__hi, __lo, (x), (y)); \ |
okini3939 | 0:8ba6230eefbd | 424 | asm ("addc %0,%2,%3\n\t" \ |
okini3939 | 0:8ba6230eefbd | 425 | "adde %1,%4,%5" \ |
okini3939 | 0:8ba6230eefbd | 426 | : "=r" (lo), "=r" (hi) \ |
okini3939 | 0:8ba6230eefbd | 427 | : "%r" (lo), "r" (__lo), \ |
okini3939 | 0:8ba6230eefbd | 428 | "%r" (hi), "r" (__hi) \ |
okini3939 | 0:8ba6230eefbd | 429 | : "xer"); \ |
okini3939 | 0:8ba6230eefbd | 430 | }) |
okini3939 | 0:8ba6230eefbd | 431 | # endif |
okini3939 | 0:8ba6230eefbd | 432 | |
okini3939 | 0:8ba6230eefbd | 433 | # if defined(OPT_ACCURACY) |
okini3939 | 0:8ba6230eefbd | 434 | /* |
okini3939 | 0:8ba6230eefbd | 435 | * This is slower than the truncating version below it. |
okini3939 | 0:8ba6230eefbd | 436 | */ |
okini3939 | 0:8ba6230eefbd | 437 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 438 | ({ mad_fixed_t __result, __round; \ |
okini3939 | 0:8ba6230eefbd | 439 | asm ("rotrwi %0,%1,%2" \ |
okini3939 | 0:8ba6230eefbd | 440 | : "=r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 441 | : "r" (lo), "i" (MAD_F_SCALEBITS)); \ |
okini3939 | 0:8ba6230eefbd | 442 | asm ("extrwi %0,%1,1,0" \ |
okini3939 | 0:8ba6230eefbd | 443 | : "=r" (__round) \ |
okini3939 | 0:8ba6230eefbd | 444 | : "r" (__result)); \ |
okini3939 | 0:8ba6230eefbd | 445 | asm ("insrwi %0,%1,%2,0" \ |
okini3939 | 0:8ba6230eefbd | 446 | : "+r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 447 | : "r" (hi), "i" (MAD_F_SCALEBITS)); \ |
okini3939 | 0:8ba6230eefbd | 448 | asm ("add %0,%1,%2" \ |
okini3939 | 0:8ba6230eefbd | 449 | : "=r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 450 | : "%r" (__result), "r" (__round)); \ |
okini3939 | 0:8ba6230eefbd | 451 | __result; \ |
okini3939 | 0:8ba6230eefbd | 452 | }) |
okini3939 | 0:8ba6230eefbd | 453 | # else |
okini3939 | 0:8ba6230eefbd | 454 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 455 | ({ mad_fixed_t __result; \ |
okini3939 | 0:8ba6230eefbd | 456 | asm ("rotrwi %0,%1,%2" \ |
okini3939 | 0:8ba6230eefbd | 457 | : "=r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 458 | : "r" (lo), "i" (MAD_F_SCALEBITS)); \ |
okini3939 | 0:8ba6230eefbd | 459 | asm ("insrwi %0,%1,%2,0" \ |
okini3939 | 0:8ba6230eefbd | 460 | : "+r" (__result) \ |
okini3939 | 0:8ba6230eefbd | 461 | : "r" (hi), "i" (MAD_F_SCALEBITS)); \ |
okini3939 | 0:8ba6230eefbd | 462 | __result; \ |
okini3939 | 0:8ba6230eefbd | 463 | }) |
okini3939 | 0:8ba6230eefbd | 464 | # endif |
okini3939 | 0:8ba6230eefbd | 465 | |
okini3939 | 0:8ba6230eefbd | 466 | # define MAD_F_SCALEBITS MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 467 | |
okini3939 | 0:8ba6230eefbd | 468 | /* --- Default ------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 469 | |
okini3939 | 0:8ba6230eefbd | 470 | # elif defined(FPM_DEFAULT) |
okini3939 | 0:8ba6230eefbd | 471 | |
okini3939 | 0:8ba6230eefbd | 472 | /* |
okini3939 | 0:8ba6230eefbd | 473 | * This version is the most portable but it loses significant accuracy. |
okini3939 | 0:8ba6230eefbd | 474 | * Furthermore, accuracy is biased against the second argument, so care |
okini3939 | 0:8ba6230eefbd | 475 | * should be taken when ordering operands. |
okini3939 | 0:8ba6230eefbd | 476 | * |
okini3939 | 0:8ba6230eefbd | 477 | * The scale factors are constant as this is not used with SSO. |
okini3939 | 0:8ba6230eefbd | 478 | * |
okini3939 | 0:8ba6230eefbd | 479 | * Pre-rounding is required to stay within the limits of compliance. |
okini3939 | 0:8ba6230eefbd | 480 | */ |
okini3939 | 0:8ba6230eefbd | 481 | # if defined(OPT_SPEED) |
okini3939 | 0:8ba6230eefbd | 482 | # define mad_f_mul(x, y) (((x) >> 12) * ((y) >> 16)) |
okini3939 | 0:8ba6230eefbd | 483 | # else |
okini3939 | 0:8ba6230eefbd | 484 | # define mad_f_mul(x, y) ((((x) + (1L << 11)) >> 12) * \ |
okini3939 | 0:8ba6230eefbd | 485 | (((y) + (1L << 15)) >> 16)) |
okini3939 | 0:8ba6230eefbd | 486 | # endif |
okini3939 | 0:8ba6230eefbd | 487 | |
okini3939 | 0:8ba6230eefbd | 488 | /* ------------------------------------------------------------------------- */ |
okini3939 | 0:8ba6230eefbd | 489 | |
okini3939 | 0:8ba6230eefbd | 490 | # else |
okini3939 | 0:8ba6230eefbd | 491 | # error "no FPM selected" |
okini3939 | 0:8ba6230eefbd | 492 | # endif |
okini3939 | 0:8ba6230eefbd | 493 | |
okini3939 | 0:8ba6230eefbd | 494 | /* default implementations */ |
okini3939 | 0:8ba6230eefbd | 495 | |
okini3939 | 0:8ba6230eefbd | 496 | # if !defined(mad_f_mul) |
okini3939 | 0:8ba6230eefbd | 497 | # define mad_f_mul(x, y) \ |
okini3939 | 0:8ba6230eefbd | 498 | ({ register mad_fixed64hi_t __hi; \ |
okini3939 | 0:8ba6230eefbd | 499 | register mad_fixed64lo_t __lo; \ |
okini3939 | 0:8ba6230eefbd | 500 | MAD_F_MLX(__hi, __lo, (x), (y)); \ |
okini3939 | 0:8ba6230eefbd | 501 | mad_f_scale64(__hi, __lo); \ |
okini3939 | 0:8ba6230eefbd | 502 | }) |
okini3939 | 0:8ba6230eefbd | 503 | # endif |
okini3939 | 0:8ba6230eefbd | 504 | |
okini3939 | 0:8ba6230eefbd | 505 | # if !defined(MAD_F_MLA) |
okini3939 | 0:8ba6230eefbd | 506 | # define MAD_F_ML0(hi, lo, x, y) ((lo) = mad_f_mul((x), (y))) |
okini3939 | 0:8ba6230eefbd | 507 | # define MAD_F_MLA(hi, lo, x, y) ((lo) += mad_f_mul((x), (y))) |
okini3939 | 0:8ba6230eefbd | 508 | # define MAD_F_MLN(hi, lo) ((lo) = -(lo)) |
okini3939 | 0:8ba6230eefbd | 509 | # define MAD_F_MLZ(hi, lo) ((void) (hi), (mad_fixed_t) (lo)) |
okini3939 | 0:8ba6230eefbd | 510 | # endif |
okini3939 | 0:8ba6230eefbd | 511 | |
okini3939 | 0:8ba6230eefbd | 512 | # if !defined(MAD_F_ML0) |
okini3939 | 0:8ba6230eefbd | 513 | # define MAD_F_ML0(hi, lo, x, y) MAD_F_MLX((hi), (lo), (x), (y)) |
okini3939 | 0:8ba6230eefbd | 514 | # endif |
okini3939 | 0:8ba6230eefbd | 515 | |
okini3939 | 0:8ba6230eefbd | 516 | # if !defined(MAD_F_MLN) |
okini3939 | 0:8ba6230eefbd | 517 | # define MAD_F_MLN(hi, lo) ((hi) = ((lo) = -(lo)) ? ~(hi) : -(hi)) |
okini3939 | 0:8ba6230eefbd | 518 | # endif |
okini3939 | 0:8ba6230eefbd | 519 | |
okini3939 | 0:8ba6230eefbd | 520 | # if !defined(MAD_F_MLZ) |
okini3939 | 0:8ba6230eefbd | 521 | # define MAD_F_MLZ(hi, lo) mad_f_scale64((hi), (lo)) |
okini3939 | 0:8ba6230eefbd | 522 | # endif |
okini3939 | 0:8ba6230eefbd | 523 | |
okini3939 | 0:8ba6230eefbd | 524 | # if !defined(mad_f_scale64) |
okini3939 | 0:8ba6230eefbd | 525 | # if defined(OPT_ACCURACY) |
okini3939 | 0:8ba6230eefbd | 526 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 527 | ((((mad_fixed_t) \ |
okini3939 | 0:8ba6230eefbd | 528 | (((hi) << (32 - (MAD_F_SCALEBITS - 1))) | \ |
okini3939 | 0:8ba6230eefbd | 529 | ((lo) >> (MAD_F_SCALEBITS - 1)))) + 1) >> 1) |
okini3939 | 0:8ba6230eefbd | 530 | # else |
okini3939 | 0:8ba6230eefbd | 531 | # define mad_f_scale64(hi, lo) \ |
okini3939 | 0:8ba6230eefbd | 532 | ((mad_fixed_t) \ |
okini3939 | 0:8ba6230eefbd | 533 | (((hi) << (32 - MAD_F_SCALEBITS)) | \ |
okini3939 | 0:8ba6230eefbd | 534 | ((lo) >> MAD_F_SCALEBITS))) |
okini3939 | 0:8ba6230eefbd | 535 | # endif |
okini3939 | 0:8ba6230eefbd | 536 | # define MAD_F_SCALEBITS MAD_F_FRACBITS |
okini3939 | 0:8ba6230eefbd | 537 | # endif |
okini3939 | 0:8ba6230eefbd | 538 | |
okini3939 | 0:8ba6230eefbd | 539 | /* C routines */ |
okini3939 | 0:8ba6230eefbd | 540 | |
okini3939 | 0:8ba6230eefbd | 541 | mad_fixed_t mad_f_abs(mad_fixed_t); |
okini3939 | 0:8ba6230eefbd | 542 | mad_fixed_t mad_f_div(mad_fixed_t, mad_fixed_t); |
okini3939 | 0:8ba6230eefbd | 543 | |
okini3939 | 0:8ba6230eefbd | 544 | # endif |
okini3939 | 0:8ba6230eefbd | 545 | |
okini3939 | 0:8ba6230eefbd | 546 | /* Id: bit.h,v 1.12 2004/01/23 09:41:32 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 547 | |
okini3939 | 0:8ba6230eefbd | 548 | # ifndef LIBMAD_BIT_H |
okini3939 | 0:8ba6230eefbd | 549 | # define LIBMAD_BIT_H |
okini3939 | 0:8ba6230eefbd | 550 | |
okini3939 | 0:8ba6230eefbd | 551 | struct mad_bitptr { |
okini3939 | 0:8ba6230eefbd | 552 | unsigned char const *byte; |
okini3939 | 0:8ba6230eefbd | 553 | unsigned short cache; |
okini3939 | 0:8ba6230eefbd | 554 | unsigned short left; |
okini3939 | 0:8ba6230eefbd | 555 | }; |
okini3939 | 0:8ba6230eefbd | 556 | |
okini3939 | 0:8ba6230eefbd | 557 | void mad_bit_init(struct mad_bitptr *, unsigned char const *); |
okini3939 | 0:8ba6230eefbd | 558 | |
okini3939 | 0:8ba6230eefbd | 559 | # define mad_bit_finish(bitptr) /* nothing */ |
okini3939 | 0:8ba6230eefbd | 560 | |
okini3939 | 0:8ba6230eefbd | 561 | unsigned int mad_bit_length(struct mad_bitptr const *, |
okini3939 | 0:8ba6230eefbd | 562 | struct mad_bitptr const *); |
okini3939 | 0:8ba6230eefbd | 563 | |
okini3939 | 0:8ba6230eefbd | 564 | # define mad_bit_bitsleft(bitptr) ((bitptr)->left) |
okini3939 | 0:8ba6230eefbd | 565 | unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *); |
okini3939 | 0:8ba6230eefbd | 566 | |
okini3939 | 0:8ba6230eefbd | 567 | void mad_bit_skip(struct mad_bitptr *, unsigned int); |
okini3939 | 0:8ba6230eefbd | 568 | unsigned long mad_bit_read(struct mad_bitptr *, unsigned int); |
okini3939 | 0:8ba6230eefbd | 569 | void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long); |
okini3939 | 0:8ba6230eefbd | 570 | |
okini3939 | 0:8ba6230eefbd | 571 | unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short); |
okini3939 | 0:8ba6230eefbd | 572 | |
okini3939 | 0:8ba6230eefbd | 573 | # endif |
okini3939 | 0:8ba6230eefbd | 574 | |
okini3939 | 0:8ba6230eefbd | 575 | /* Id: timer.h,v 1.16 2004/01/23 09:41:33 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 576 | |
okini3939 | 0:8ba6230eefbd | 577 | # ifndef LIBMAD_TIMER_H |
okini3939 | 0:8ba6230eefbd | 578 | # define LIBMAD_TIMER_H |
okini3939 | 0:8ba6230eefbd | 579 | |
okini3939 | 0:8ba6230eefbd | 580 | typedef struct { |
okini3939 | 0:8ba6230eefbd | 581 | signed long seconds; /* whole seconds */ |
okini3939 | 0:8ba6230eefbd | 582 | unsigned long fraction; /* 1/MAD_TIMER_RESOLUTION seconds */ |
okini3939 | 0:8ba6230eefbd | 583 | } mad_timer_t; |
okini3939 | 0:8ba6230eefbd | 584 | |
okini3939 | 0:8ba6230eefbd | 585 | extern mad_timer_t const mad_timer_zero; |
okini3939 | 0:8ba6230eefbd | 586 | |
okini3939 | 0:8ba6230eefbd | 587 | # define MAD_TIMER_RESOLUTION 352800000UL |
okini3939 | 0:8ba6230eefbd | 588 | |
okini3939 | 0:8ba6230eefbd | 589 | enum mad_units { |
okini3939 | 0:8ba6230eefbd | 590 | MAD_UNITS_HOURS = -2, |
okini3939 | 0:8ba6230eefbd | 591 | MAD_UNITS_MINUTES = -1, |
okini3939 | 0:8ba6230eefbd | 592 | MAD_UNITS_SECONDS = 0, |
okini3939 | 0:8ba6230eefbd | 593 | |
okini3939 | 0:8ba6230eefbd | 594 | /* metric units */ |
okini3939 | 0:8ba6230eefbd | 595 | |
okini3939 | 0:8ba6230eefbd | 596 | MAD_UNITS_DECISECONDS = 10, |
okini3939 | 0:8ba6230eefbd | 597 | MAD_UNITS_CENTISECONDS = 100, |
okini3939 | 0:8ba6230eefbd | 598 | MAD_UNITS_MILLISECONDS = 1000, |
okini3939 | 0:8ba6230eefbd | 599 | |
okini3939 | 0:8ba6230eefbd | 600 | /* audio sample units */ |
okini3939 | 0:8ba6230eefbd | 601 | |
okini3939 | 0:8ba6230eefbd | 602 | MAD_UNITS_8000_HZ = 8000, |
okini3939 | 0:8ba6230eefbd | 603 | MAD_UNITS_11025_HZ = 11025, |
okini3939 | 0:8ba6230eefbd | 604 | MAD_UNITS_12000_HZ = 12000, |
okini3939 | 0:8ba6230eefbd | 605 | |
okini3939 | 0:8ba6230eefbd | 606 | MAD_UNITS_16000_HZ = 16000, |
okini3939 | 0:8ba6230eefbd | 607 | MAD_UNITS_22050_HZ = 22050, |
okini3939 | 0:8ba6230eefbd | 608 | MAD_UNITS_24000_HZ = 24000, |
okini3939 | 0:8ba6230eefbd | 609 | |
okini3939 | 0:8ba6230eefbd | 610 | MAD_UNITS_32000_HZ = 32000, |
okini3939 | 0:8ba6230eefbd | 611 | MAD_UNITS_44100_HZ = 44100, |
okini3939 | 0:8ba6230eefbd | 612 | MAD_UNITS_48000_HZ = 48000, |
okini3939 | 0:8ba6230eefbd | 613 | |
okini3939 | 0:8ba6230eefbd | 614 | /* video frame/field units */ |
okini3939 | 0:8ba6230eefbd | 615 | |
okini3939 | 0:8ba6230eefbd | 616 | MAD_UNITS_24_FPS = 24, |
okini3939 | 0:8ba6230eefbd | 617 | MAD_UNITS_25_FPS = 25, |
okini3939 | 0:8ba6230eefbd | 618 | MAD_UNITS_30_FPS = 30, |
okini3939 | 0:8ba6230eefbd | 619 | MAD_UNITS_48_FPS = 48, |
okini3939 | 0:8ba6230eefbd | 620 | MAD_UNITS_50_FPS = 50, |
okini3939 | 0:8ba6230eefbd | 621 | MAD_UNITS_60_FPS = 60, |
okini3939 | 0:8ba6230eefbd | 622 | |
okini3939 | 0:8ba6230eefbd | 623 | /* CD audio frames */ |
okini3939 | 0:8ba6230eefbd | 624 | |
okini3939 | 0:8ba6230eefbd | 625 | MAD_UNITS_75_FPS = 75, |
okini3939 | 0:8ba6230eefbd | 626 | |
okini3939 | 0:8ba6230eefbd | 627 | /* video drop-frame units */ |
okini3939 | 0:8ba6230eefbd | 628 | |
okini3939 | 0:8ba6230eefbd | 629 | MAD_UNITS_23_976_FPS = -24, |
okini3939 | 0:8ba6230eefbd | 630 | MAD_UNITS_24_975_FPS = -25, |
okini3939 | 0:8ba6230eefbd | 631 | MAD_UNITS_29_97_FPS = -30, |
okini3939 | 0:8ba6230eefbd | 632 | MAD_UNITS_47_952_FPS = -48, |
okini3939 | 0:8ba6230eefbd | 633 | MAD_UNITS_49_95_FPS = -50, |
okini3939 | 0:8ba6230eefbd | 634 | MAD_UNITS_59_94_FPS = -60 |
okini3939 | 0:8ba6230eefbd | 635 | }; |
okini3939 | 0:8ba6230eefbd | 636 | |
okini3939 | 0:8ba6230eefbd | 637 | # define mad_timer_reset(timer) ((void) (*(timer) = mad_timer_zero)) |
okini3939 | 0:8ba6230eefbd | 638 | |
okini3939 | 0:8ba6230eefbd | 639 | int mad_timer_compare(mad_timer_t, mad_timer_t); |
okini3939 | 0:8ba6230eefbd | 640 | |
okini3939 | 0:8ba6230eefbd | 641 | # define mad_timer_sign(timer) mad_timer_compare((timer), mad_timer_zero) |
okini3939 | 0:8ba6230eefbd | 642 | |
okini3939 | 0:8ba6230eefbd | 643 | void mad_timer_negate(mad_timer_t *); |
okini3939 | 0:8ba6230eefbd | 644 | mad_timer_t mad_timer_abs(mad_timer_t); |
okini3939 | 0:8ba6230eefbd | 645 | |
okini3939 | 0:8ba6230eefbd | 646 | void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long); |
okini3939 | 0:8ba6230eefbd | 647 | void mad_timer_add(mad_timer_t *, mad_timer_t); |
okini3939 | 0:8ba6230eefbd | 648 | void mad_timer_multiply(mad_timer_t *, signed long); |
okini3939 | 0:8ba6230eefbd | 649 | |
okini3939 | 0:8ba6230eefbd | 650 | signed long mad_timer_count(mad_timer_t, enum mad_units); |
okini3939 | 0:8ba6230eefbd | 651 | unsigned long mad_timer_fraction(mad_timer_t, unsigned long); |
okini3939 | 0:8ba6230eefbd | 652 | void mad_timer_string(mad_timer_t, char *, char const *, |
okini3939 | 0:8ba6230eefbd | 653 | enum mad_units, enum mad_units, unsigned long); |
okini3939 | 0:8ba6230eefbd | 654 | |
okini3939 | 0:8ba6230eefbd | 655 | # endif |
okini3939 | 0:8ba6230eefbd | 656 | |
okini3939 | 0:8ba6230eefbd | 657 | /* Id: stream.h,v 1.20 2004/02/05 09:02:39 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 658 | |
okini3939 | 0:8ba6230eefbd | 659 | # ifndef LIBMAD_STREAM_H |
okini3939 | 0:8ba6230eefbd | 660 | # define LIBMAD_STREAM_H |
okini3939 | 0:8ba6230eefbd | 661 | |
okini3939 | 0:8ba6230eefbd | 662 | |
okini3939 | 0:8ba6230eefbd | 663 | # define MAD_BUFFER_GUARD 8 |
okini3939 | 0:8ba6230eefbd | 664 | # define MAD_BUFFER_MDLEN (511 + 2048 + MAD_BUFFER_GUARD) |
okini3939 | 0:8ba6230eefbd | 665 | |
okini3939 | 0:8ba6230eefbd | 666 | enum mad_error { |
okini3939 | 0:8ba6230eefbd | 667 | MAD_ERROR_NONE = 0x0000, /* no error */ |
okini3939 | 0:8ba6230eefbd | 668 | |
okini3939 | 0:8ba6230eefbd | 669 | MAD_ERROR_BUFLEN = 0x0001, /* input buffer too small (or EOF) */ |
okini3939 | 0:8ba6230eefbd | 670 | MAD_ERROR_BUFPTR = 0x0002, /* invalid (null) buffer pointer */ |
okini3939 | 0:8ba6230eefbd | 671 | |
okini3939 | 0:8ba6230eefbd | 672 | MAD_ERROR_NOMEM = 0x0031, /* not enough memory */ |
okini3939 | 0:8ba6230eefbd | 673 | |
okini3939 | 0:8ba6230eefbd | 674 | MAD_ERROR_LOSTSYNC = 0x0101, /* lost synchronization */ |
okini3939 | 0:8ba6230eefbd | 675 | MAD_ERROR_BADLAYER = 0x0102, /* reserved header layer value */ |
okini3939 | 0:8ba6230eefbd | 676 | MAD_ERROR_BADBITRATE = 0x0103, /* forbidden bitrate value */ |
okini3939 | 0:8ba6230eefbd | 677 | MAD_ERROR_BADSAMPLERATE = 0x0104, /* reserved sample frequency value */ |
okini3939 | 0:8ba6230eefbd | 678 | MAD_ERROR_BADEMPHASIS = 0x0105, /* reserved emphasis value */ |
okini3939 | 0:8ba6230eefbd | 679 | |
okini3939 | 0:8ba6230eefbd | 680 | MAD_ERROR_BADCRC = 0x0201, /* CRC check failed */ |
okini3939 | 0:8ba6230eefbd | 681 | MAD_ERROR_BADBITALLOC = 0x0211, /* forbidden bit allocation value */ |
okini3939 | 0:8ba6230eefbd | 682 | MAD_ERROR_BADSCALEFACTOR = 0x0221, /* bad scalefactor index */ |
okini3939 | 0:8ba6230eefbd | 683 | MAD_ERROR_BADMODE = 0x0222, /* bad bitrate/mode combination */ |
okini3939 | 0:8ba6230eefbd | 684 | MAD_ERROR_BADFRAMELEN = 0x0231, /* bad frame length */ |
okini3939 | 0:8ba6230eefbd | 685 | MAD_ERROR_BADBIGVALUES = 0x0232, /* bad big_values count */ |
okini3939 | 0:8ba6230eefbd | 686 | MAD_ERROR_BADBLOCKTYPE = 0x0233, /* reserved block_type */ |
okini3939 | 0:8ba6230eefbd | 687 | MAD_ERROR_BADSCFSI = 0x0234, /* bad scalefactor selection info */ |
okini3939 | 0:8ba6230eefbd | 688 | MAD_ERROR_BADDATAPTR = 0x0235, /* bad main_data_begin pointer */ |
okini3939 | 0:8ba6230eefbd | 689 | MAD_ERROR_BADPART3LEN = 0x0236, /* bad audio data length */ |
okini3939 | 0:8ba6230eefbd | 690 | MAD_ERROR_BADHUFFTABLE = 0x0237, /* bad Huffman table select */ |
okini3939 | 0:8ba6230eefbd | 691 | MAD_ERROR_BADHUFFDATA = 0x0238, /* Huffman data overrun */ |
okini3939 | 0:8ba6230eefbd | 692 | MAD_ERROR_BADSTEREO = 0x0239 /* incompatible block_type for JS */ |
okini3939 | 0:8ba6230eefbd | 693 | }; |
okini3939 | 0:8ba6230eefbd | 694 | |
okini3939 | 0:8ba6230eefbd | 695 | # define MAD_RECOVERABLE(error) ((error) & 0xff00) |
okini3939 | 0:8ba6230eefbd | 696 | |
okini3939 | 0:8ba6230eefbd | 697 | struct mad_stream { |
okini3939 | 0:8ba6230eefbd | 698 | unsigned char const *buffer; /* input bitstream buffer */ |
okini3939 | 0:8ba6230eefbd | 699 | unsigned char const *bufend; /* end of buffer */ |
okini3939 | 0:8ba6230eefbd | 700 | unsigned long skiplen; /* bytes to skip before next frame */ |
okini3939 | 0:8ba6230eefbd | 701 | |
okini3939 | 0:8ba6230eefbd | 702 | int sync; /* stream sync found */ |
okini3939 | 0:8ba6230eefbd | 703 | unsigned long freerate; /* free bitrate (fixed) */ |
okini3939 | 0:8ba6230eefbd | 704 | |
okini3939 | 0:8ba6230eefbd | 705 | unsigned char const *this_frame; /* start of current frame */ |
okini3939 | 0:8ba6230eefbd | 706 | unsigned char const *next_frame; /* start of next frame */ |
okini3939 | 0:8ba6230eefbd | 707 | struct mad_bitptr ptr; /* current processing bit pointer */ |
okini3939 | 0:8ba6230eefbd | 708 | |
okini3939 | 0:8ba6230eefbd | 709 | struct mad_bitptr anc_ptr; /* ancillary bits pointer */ |
okini3939 | 0:8ba6230eefbd | 710 | unsigned int anc_bitlen; /* number of ancillary bits */ |
okini3939 | 0:8ba6230eefbd | 711 | |
okini3939 | 0:8ba6230eefbd | 712 | unsigned char (*main_data)[MAD_BUFFER_MDLEN]; |
okini3939 | 0:8ba6230eefbd | 713 | /* Layer III main_data() */ |
okini3939 | 0:8ba6230eefbd | 714 | unsigned int md_len; /* bytes in main_data */ |
okini3939 | 0:8ba6230eefbd | 715 | |
okini3939 | 0:8ba6230eefbd | 716 | int options; /* decoding options (see below) */ |
okini3939 | 0:8ba6230eefbd | 717 | enum mad_error error; /* error code (see above) */ |
okini3939 | 0:8ba6230eefbd | 718 | }; |
okini3939 | 0:8ba6230eefbd | 719 | |
okini3939 | 0:8ba6230eefbd | 720 | enum { |
okini3939 | 0:8ba6230eefbd | 721 | MAD_OPTION_IGNORECRC = 0x0001, /* ignore CRC errors */ |
okini3939 | 0:8ba6230eefbd | 722 | MAD_OPTION_HALFSAMPLERATE = 0x0002 /* generate PCM at 1/2 sample rate */ |
okini3939 | 0:8ba6230eefbd | 723 | # if 0 /* not yet implemented */ |
okini3939 | 0:8ba6230eefbd | 724 | MAD_OPTION_LEFTCHANNEL = 0x0010, /* decode left channel only */ |
okini3939 | 0:8ba6230eefbd | 725 | MAD_OPTION_RIGHTCHANNEL = 0x0020, /* decode right channel only */ |
okini3939 | 0:8ba6230eefbd | 726 | MAD_OPTION_SINGLECHANNEL = 0x0030 /* combine channels */ |
okini3939 | 0:8ba6230eefbd | 727 | # endif |
okini3939 | 0:8ba6230eefbd | 728 | }; |
okini3939 | 0:8ba6230eefbd | 729 | |
okini3939 | 0:8ba6230eefbd | 730 | void mad_stream_init(struct mad_stream *); |
okini3939 | 0:8ba6230eefbd | 731 | void mad_stream_finish(struct mad_stream *); |
okini3939 | 0:8ba6230eefbd | 732 | |
okini3939 | 0:8ba6230eefbd | 733 | # define mad_stream_options(stream, opts) \ |
okini3939 | 0:8ba6230eefbd | 734 | ((void) ((stream)->options = (opts))) |
okini3939 | 0:8ba6230eefbd | 735 | |
okini3939 | 0:8ba6230eefbd | 736 | void mad_stream_buffer(struct mad_stream *, |
okini3939 | 0:8ba6230eefbd | 737 | unsigned char const *, unsigned long); |
okini3939 | 0:8ba6230eefbd | 738 | void mad_stream_skip(struct mad_stream *, unsigned long); |
okini3939 | 0:8ba6230eefbd | 739 | |
okini3939 | 0:8ba6230eefbd | 740 | int mad_stream_sync(struct mad_stream *); |
okini3939 | 0:8ba6230eefbd | 741 | |
okini3939 | 0:8ba6230eefbd | 742 | char const *mad_stream_errorstr(struct mad_stream const *); |
okini3939 | 0:8ba6230eefbd | 743 | |
okini3939 | 0:8ba6230eefbd | 744 | # endif |
okini3939 | 0:8ba6230eefbd | 745 | |
okini3939 | 0:8ba6230eefbd | 746 | /* Id: frame.h,v 1.20 2004/01/23 09:41:32 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 747 | |
okini3939 | 0:8ba6230eefbd | 748 | # ifndef LIBMAD_FRAME_H |
okini3939 | 0:8ba6230eefbd | 749 | # define LIBMAD_FRAME_H |
okini3939 | 0:8ba6230eefbd | 750 | |
okini3939 | 0:8ba6230eefbd | 751 | |
okini3939 | 0:8ba6230eefbd | 752 | enum mad_layer { |
okini3939 | 0:8ba6230eefbd | 753 | MAD_LAYER_I = 1, /* Layer I */ |
okini3939 | 0:8ba6230eefbd | 754 | MAD_LAYER_II = 2, /* Layer II */ |
okini3939 | 0:8ba6230eefbd | 755 | MAD_LAYER_III = 3 /* Layer III */ |
okini3939 | 0:8ba6230eefbd | 756 | }; |
okini3939 | 0:8ba6230eefbd | 757 | |
okini3939 | 0:8ba6230eefbd | 758 | enum mad_mode { |
okini3939 | 0:8ba6230eefbd | 759 | MAD_MODE_SINGLE_CHANNEL = 0, /* single channel */ |
okini3939 | 0:8ba6230eefbd | 760 | MAD_MODE_DUAL_CHANNEL = 1, /* dual channel */ |
okini3939 | 0:8ba6230eefbd | 761 | MAD_MODE_JOINT_STEREO = 2, /* joint (MS/intensity) stereo */ |
okini3939 | 0:8ba6230eefbd | 762 | MAD_MODE_STEREO = 3 /* normal LR stereo */ |
okini3939 | 0:8ba6230eefbd | 763 | }; |
okini3939 | 0:8ba6230eefbd | 764 | |
okini3939 | 0:8ba6230eefbd | 765 | enum mad_emphasis { |
okini3939 | 0:8ba6230eefbd | 766 | MAD_EMPHASIS_NONE = 0, /* no emphasis */ |
okini3939 | 0:8ba6230eefbd | 767 | MAD_EMPHASIS_50_15_US = 1, /* 50/15 microseconds emphasis */ |
okini3939 | 0:8ba6230eefbd | 768 | MAD_EMPHASIS_CCITT_J_17 = 3, /* CCITT J.17 emphasis */ |
okini3939 | 0:8ba6230eefbd | 769 | MAD_EMPHASIS_RESERVED = 2 /* unknown emphasis */ |
okini3939 | 0:8ba6230eefbd | 770 | }; |
okini3939 | 0:8ba6230eefbd | 771 | |
okini3939 | 0:8ba6230eefbd | 772 | struct mad_header { |
okini3939 | 0:8ba6230eefbd | 773 | enum mad_layer layer; /* audio layer (1, 2, or 3) */ |
okini3939 | 0:8ba6230eefbd | 774 | enum mad_mode mode; /* channel mode (see above) */ |
okini3939 | 0:8ba6230eefbd | 775 | int mode_extension; /* additional mode info */ |
okini3939 | 0:8ba6230eefbd | 776 | enum mad_emphasis emphasis; /* de-emphasis to use (see above) */ |
okini3939 | 0:8ba6230eefbd | 777 | |
okini3939 | 0:8ba6230eefbd | 778 | unsigned long bitrate; /* stream bitrate (bps) */ |
okini3939 | 0:8ba6230eefbd | 779 | unsigned int samplerate; /* sampling frequency (Hz) */ |
okini3939 | 0:8ba6230eefbd | 780 | |
okini3939 | 0:8ba6230eefbd | 781 | unsigned short crc_check; /* frame CRC accumulator */ |
okini3939 | 0:8ba6230eefbd | 782 | unsigned short crc_target; /* final target CRC checksum */ |
okini3939 | 0:8ba6230eefbd | 783 | |
okini3939 | 0:8ba6230eefbd | 784 | int flags; /* flags (see below) */ |
okini3939 | 0:8ba6230eefbd | 785 | int private_bits; /* private bits (see below) */ |
okini3939 | 0:8ba6230eefbd | 786 | |
okini3939 | 0:8ba6230eefbd | 787 | mad_timer_t duration; /* audio playing time of frame */ |
okini3939 | 0:8ba6230eefbd | 788 | }; |
okini3939 | 0:8ba6230eefbd | 789 | |
okini3939 | 0:8ba6230eefbd | 790 | struct mad_frame { |
okini3939 | 0:8ba6230eefbd | 791 | struct mad_header header; /* MPEG audio header */ |
okini3939 | 0:8ba6230eefbd | 792 | |
okini3939 | 0:8ba6230eefbd | 793 | int options; /* decoding options (from stream) */ |
okini3939 | 0:8ba6230eefbd | 794 | |
okini3939 | 0:8ba6230eefbd | 795 | mad_fixed_t sbsample[2][36][32]; /* synthesis subband filter samples */ |
okini3939 | 0:8ba6230eefbd | 796 | mad_fixed_t (*overlap)[2][32][18]; /* Layer III block overlap data */ |
okini3939 | 0:8ba6230eefbd | 797 | }; |
okini3939 | 0:8ba6230eefbd | 798 | |
okini3939 | 0:8ba6230eefbd | 799 | # define MAD_NCHANNELS(header) ((header)->mode ? 2 : 1) |
okini3939 | 0:8ba6230eefbd | 800 | # define MAD_NSBSAMPLES(header) \ |
okini3939 | 0:8ba6230eefbd | 801 | ((header)->layer == MAD_LAYER_I ? 12 : \ |
okini3939 | 0:8ba6230eefbd | 802 | (((header)->layer == MAD_LAYER_III && \ |
okini3939 | 0:8ba6230eefbd | 803 | ((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36)) |
okini3939 | 0:8ba6230eefbd | 804 | |
okini3939 | 0:8ba6230eefbd | 805 | enum { |
okini3939 | 0:8ba6230eefbd | 806 | MAD_FLAG_NPRIVATE_III = 0x0007, /* number of Layer III private bits */ |
okini3939 | 0:8ba6230eefbd | 807 | MAD_FLAG_INCOMPLETE = 0x0008, /* header but not data is decoded */ |
okini3939 | 0:8ba6230eefbd | 808 | |
okini3939 | 0:8ba6230eefbd | 809 | MAD_FLAG_PROTECTION = 0x0010, /* frame has CRC protection */ |
okini3939 | 0:8ba6230eefbd | 810 | MAD_FLAG_COPYRIGHT = 0x0020, /* frame is copyright */ |
okini3939 | 0:8ba6230eefbd | 811 | MAD_FLAG_ORIGINAL = 0x0040, /* frame is original (else copy) */ |
okini3939 | 0:8ba6230eefbd | 812 | MAD_FLAG_PADDING = 0x0080, /* frame has additional slot */ |
okini3939 | 0:8ba6230eefbd | 813 | |
okini3939 | 0:8ba6230eefbd | 814 | MAD_FLAG_I_STEREO = 0x0100, /* uses intensity joint stereo */ |
okini3939 | 0:8ba6230eefbd | 815 | MAD_FLAG_MS_STEREO = 0x0200, /* uses middle/side joint stereo */ |
okini3939 | 0:8ba6230eefbd | 816 | MAD_FLAG_FREEFORMAT = 0x0400, /* uses free format bitrate */ |
okini3939 | 0:8ba6230eefbd | 817 | |
okini3939 | 0:8ba6230eefbd | 818 | MAD_FLAG_LSF_EXT = 0x1000, /* lower sampling freq. extension */ |
okini3939 | 0:8ba6230eefbd | 819 | MAD_FLAG_MC_EXT = 0x2000, /* multichannel audio extension */ |
okini3939 | 0:8ba6230eefbd | 820 | MAD_FLAG_MPEG_2_5_EXT = 0x4000 /* MPEG 2.5 (unofficial) extension */ |
okini3939 | 0:8ba6230eefbd | 821 | }; |
okini3939 | 0:8ba6230eefbd | 822 | |
okini3939 | 0:8ba6230eefbd | 823 | enum { |
okini3939 | 0:8ba6230eefbd | 824 | MAD_PRIVATE_HEADER = 0x0100, /* header private bit */ |
okini3939 | 0:8ba6230eefbd | 825 | MAD_PRIVATE_III = 0x001f /* Layer III private bits (up to 5) */ |
okini3939 | 0:8ba6230eefbd | 826 | }; |
okini3939 | 0:8ba6230eefbd | 827 | |
okini3939 | 0:8ba6230eefbd | 828 | void mad_header_init(struct mad_header *); |
okini3939 | 0:8ba6230eefbd | 829 | |
okini3939 | 0:8ba6230eefbd | 830 | # define mad_header_finish(header) /* nothing */ |
okini3939 | 0:8ba6230eefbd | 831 | |
okini3939 | 0:8ba6230eefbd | 832 | int mad_header_decode(struct mad_header *, struct mad_stream *); |
okini3939 | 0:8ba6230eefbd | 833 | |
okini3939 | 0:8ba6230eefbd | 834 | void mad_frame_init(struct mad_frame *); |
okini3939 | 0:8ba6230eefbd | 835 | void mad_frame_finish(struct mad_frame *); |
okini3939 | 0:8ba6230eefbd | 836 | |
okini3939 | 0:8ba6230eefbd | 837 | int mad_frame_decode(struct mad_frame *, struct mad_stream *); |
okini3939 | 0:8ba6230eefbd | 838 | |
okini3939 | 0:8ba6230eefbd | 839 | void mad_frame_mute(struct mad_frame *); |
okini3939 | 0:8ba6230eefbd | 840 | |
okini3939 | 0:8ba6230eefbd | 841 | # endif |
okini3939 | 0:8ba6230eefbd | 842 | |
okini3939 | 0:8ba6230eefbd | 843 | /* Id: synth.h,v 1.15 2004/01/23 09:41:33 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 844 | |
okini3939 | 0:8ba6230eefbd | 845 | # ifndef LIBMAD_SYNTH_H |
okini3939 | 0:8ba6230eefbd | 846 | # define LIBMAD_SYNTH_H |
okini3939 | 0:8ba6230eefbd | 847 | |
okini3939 | 0:8ba6230eefbd | 848 | |
okini3939 | 0:8ba6230eefbd | 849 | struct mad_pcm { |
okini3939 | 0:8ba6230eefbd | 850 | unsigned int samplerate; /* sampling frequency (Hz) */ |
okini3939 | 0:8ba6230eefbd | 851 | unsigned short channels; /* number of channels */ |
okini3939 | 0:8ba6230eefbd | 852 | unsigned short length; /* number of samples per channel */ |
okini3939 | 0:8ba6230eefbd | 853 | mad_fixed_t samples[2][1152]; /* PCM output samples [ch][sample] */ |
okini3939 | 0:8ba6230eefbd | 854 | }; |
okini3939 | 0:8ba6230eefbd | 855 | |
okini3939 | 0:8ba6230eefbd | 856 | struct mad_synth { |
okini3939 | 0:8ba6230eefbd | 857 | mad_fixed_t filter[2][2][2][16][8]; /* polyphase filterbank outputs */ |
okini3939 | 0:8ba6230eefbd | 858 | /* [ch][eo][peo][s][v] */ |
okini3939 | 0:8ba6230eefbd | 859 | |
okini3939 | 0:8ba6230eefbd | 860 | unsigned int phase; /* current processing phase */ |
okini3939 | 0:8ba6230eefbd | 861 | |
okini3939 | 0:8ba6230eefbd | 862 | struct mad_pcm pcm; /* PCM output */ |
okini3939 | 0:8ba6230eefbd | 863 | }; |
okini3939 | 0:8ba6230eefbd | 864 | |
okini3939 | 0:8ba6230eefbd | 865 | /* single channel PCM selector */ |
okini3939 | 0:8ba6230eefbd | 866 | enum { |
okini3939 | 0:8ba6230eefbd | 867 | MAD_PCM_CHANNEL_SINGLE = 0 |
okini3939 | 0:8ba6230eefbd | 868 | }; |
okini3939 | 0:8ba6230eefbd | 869 | |
okini3939 | 0:8ba6230eefbd | 870 | /* dual channel PCM selector */ |
okini3939 | 0:8ba6230eefbd | 871 | enum { |
okini3939 | 0:8ba6230eefbd | 872 | MAD_PCM_CHANNEL_DUAL_1 = 0, |
okini3939 | 0:8ba6230eefbd | 873 | MAD_PCM_CHANNEL_DUAL_2 = 1 |
okini3939 | 0:8ba6230eefbd | 874 | }; |
okini3939 | 0:8ba6230eefbd | 875 | |
okini3939 | 0:8ba6230eefbd | 876 | /* stereo PCM selector */ |
okini3939 | 0:8ba6230eefbd | 877 | enum { |
okini3939 | 0:8ba6230eefbd | 878 | MAD_PCM_CHANNEL_STEREO_LEFT = 0, |
okini3939 | 0:8ba6230eefbd | 879 | MAD_PCM_CHANNEL_STEREO_RIGHT = 1 |
okini3939 | 0:8ba6230eefbd | 880 | }; |
okini3939 | 0:8ba6230eefbd | 881 | |
okini3939 | 0:8ba6230eefbd | 882 | void mad_synth_init(struct mad_synth *); |
okini3939 | 0:8ba6230eefbd | 883 | |
okini3939 | 0:8ba6230eefbd | 884 | # define mad_synth_finish(synth) /* nothing */ |
okini3939 | 0:8ba6230eefbd | 885 | |
okini3939 | 0:8ba6230eefbd | 886 | void mad_synth_mute(struct mad_synth *); |
okini3939 | 0:8ba6230eefbd | 887 | |
okini3939 | 0:8ba6230eefbd | 888 | void mad_synth_frame(struct mad_synth *, struct mad_frame const *); |
okini3939 | 0:8ba6230eefbd | 889 | |
okini3939 | 0:8ba6230eefbd | 890 | # endif |
okini3939 | 0:8ba6230eefbd | 891 | |
okini3939 | 0:8ba6230eefbd | 892 | /* Id: decoder.h,v 1.17 2004/01/23 09:41:32 rob Exp */ |
okini3939 | 0:8ba6230eefbd | 893 | |
okini3939 | 0:8ba6230eefbd | 894 | # ifndef LIBMAD_DECODER_H |
okini3939 | 0:8ba6230eefbd | 895 | # define LIBMAD_DECODER_H |
okini3939 | 0:8ba6230eefbd | 896 | |
okini3939 | 0:8ba6230eefbd | 897 | |
okini3939 | 0:8ba6230eefbd | 898 | enum mad_decoder_mode { |
okini3939 | 0:8ba6230eefbd | 899 | MAD_DECODER_MODE_SYNC = 0, |
okini3939 | 0:8ba6230eefbd | 900 | MAD_DECODER_MODE_ASYNC |
okini3939 | 0:8ba6230eefbd | 901 | }; |
okini3939 | 0:8ba6230eefbd | 902 | |
okini3939 | 0:8ba6230eefbd | 903 | enum mad_flow { |
okini3939 | 0:8ba6230eefbd | 904 | MAD_FLOW_CONTINUE = 0x0000, /* continue normally */ |
okini3939 | 0:8ba6230eefbd | 905 | MAD_FLOW_STOP = 0x0010, /* stop decoding normally */ |
okini3939 | 0:8ba6230eefbd | 906 | MAD_FLOW_BREAK = 0x0011, /* stop decoding and signal an error */ |
okini3939 | 0:8ba6230eefbd | 907 | MAD_FLOW_IGNORE = 0x0020 /* ignore the current frame */ |
okini3939 | 0:8ba6230eefbd | 908 | }; |
okini3939 | 0:8ba6230eefbd | 909 | |
okini3939 | 0:8ba6230eefbd | 910 | struct mad_sync_s { |
okini3939 | 0:8ba6230eefbd | 911 | struct mad_stream stream; |
okini3939 | 0:8ba6230eefbd | 912 | struct mad_frame frame; |
okini3939 | 0:8ba6230eefbd | 913 | struct mad_synth *synth; |
okini3939 | 0:8ba6230eefbd | 914 | }; |
okini3939 | 0:8ba6230eefbd | 915 | |
okini3939 | 0:8ba6230eefbd | 916 | struct mad_decoder { |
okini3939 | 0:8ba6230eefbd | 917 | enum mad_decoder_mode mode; |
okini3939 | 0:8ba6230eefbd | 918 | |
okini3939 | 0:8ba6230eefbd | 919 | int options; |
okini3939 | 0:8ba6230eefbd | 920 | |
okini3939 | 0:8ba6230eefbd | 921 | struct { |
okini3939 | 0:8ba6230eefbd | 922 | long pid; |
okini3939 | 0:8ba6230eefbd | 923 | int in; |
okini3939 | 0:8ba6230eefbd | 924 | int out; |
okini3939 | 0:8ba6230eefbd | 925 | } async; |
okini3939 | 0:8ba6230eefbd | 926 | |
okini3939 | 0:8ba6230eefbd | 927 | struct mad_sync_s *sync; |
okini3939 | 0:8ba6230eefbd | 928 | |
okini3939 | 0:8ba6230eefbd | 929 | void *cb_data; |
okini3939 | 0:8ba6230eefbd | 930 | |
okini3939 | 0:8ba6230eefbd | 931 | enum mad_flow (*input_func)(void *, struct mad_stream *); |
okini3939 | 0:8ba6230eefbd | 932 | enum mad_flow (*header_func)(void *, struct mad_header const *); |
okini3939 | 0:8ba6230eefbd | 933 | enum mad_flow (*filter_func)(void *, |
okini3939 | 0:8ba6230eefbd | 934 | struct mad_stream const *, struct mad_frame *); |
okini3939 | 0:8ba6230eefbd | 935 | enum mad_flow (*output_func)(void *, |
okini3939 | 0:8ba6230eefbd | 936 | struct mad_header const *, struct mad_pcm *); |
okini3939 | 0:8ba6230eefbd | 937 | enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *); |
okini3939 | 0:8ba6230eefbd | 938 | enum mad_flow (*message_func)(void *, void *, unsigned int *); |
okini3939 | 0:8ba6230eefbd | 939 | }; |
okini3939 | 0:8ba6230eefbd | 940 | |
okini3939 | 0:8ba6230eefbd | 941 | void mad_decoder_init(struct mad_decoder *, void *, |
okini3939 | 0:8ba6230eefbd | 942 | enum mad_flow (*)(void *, struct mad_stream *), |
okini3939 | 0:8ba6230eefbd | 943 | enum mad_flow (*)(void *, struct mad_header const *), |
okini3939 | 0:8ba6230eefbd | 944 | enum mad_flow (*)(void *, |
okini3939 | 0:8ba6230eefbd | 945 | struct mad_stream const *, |
okini3939 | 0:8ba6230eefbd | 946 | struct mad_frame *), |
okini3939 | 0:8ba6230eefbd | 947 | enum mad_flow (*)(void *, |
okini3939 | 0:8ba6230eefbd | 948 | struct mad_header const *, |
okini3939 | 0:8ba6230eefbd | 949 | struct mad_pcm *), |
okini3939 | 0:8ba6230eefbd | 950 | enum mad_flow (*)(void *, |
okini3939 | 0:8ba6230eefbd | 951 | struct mad_stream *, |
okini3939 | 0:8ba6230eefbd | 952 | struct mad_frame *), |
okini3939 | 0:8ba6230eefbd | 953 | enum mad_flow (*)(void *, void *, unsigned int *)); |
okini3939 | 0:8ba6230eefbd | 954 | int mad_decoder_finish(struct mad_decoder *); |
okini3939 | 0:8ba6230eefbd | 955 | |
okini3939 | 0:8ba6230eefbd | 956 | # define mad_decoder_options(decoder, opts) \ |
okini3939 | 0:8ba6230eefbd | 957 | ((void) ((decoder)->options = (opts))) |
okini3939 | 0:8ba6230eefbd | 958 | |
okini3939 | 0:8ba6230eefbd | 959 | int mad_decoder_run(struct mad_decoder *, enum mad_decoder_mode); |
okini3939 | 0:8ba6230eefbd | 960 | int mad_decoder_message(struct mad_decoder *, void *, unsigned int *); |
okini3939 | 0:8ba6230eefbd | 961 | |
okini3939 | 0:8ba6230eefbd | 962 | # endif |
okini3939 | 0:8ba6230eefbd | 963 | |
okini3939 | 0:8ba6230eefbd | 964 | # ifdef __cplusplus |
okini3939 | 0:8ba6230eefbd | 965 | } |
okini3939 | 0:8ba6230eefbd | 966 | # endif |