audio_util.c.svn-base

psp播放器PPA源码,在MSYS/CYGWIN环境下编译（GNU-C）

/* 
 *	Copyright (C) 2009 cooleyes
 *	[e-mail] 
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  This Program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */
 
#include "audio_util.h"
#include "cpu_clock.h"

//static signed short __attribute__((aligned(16))) pcm_normalize_table16[65536] = {
//	     0,      1,      2,      3,      4,      5,      6,      7,      8,      9,     10,     11,     12,     13,     14,     15, 
//	    16,     17,     18,     19,     20,     21,     22,     23,     24,     25,     26,     27,     28,     29,     30,     31, 
//	    32,     33,     34,     35,     36,     37,     38,     39,     40,     41,     42,     43,     44,     45,     46,     47, 
//	    48,     49,     50,     51,     52,     53,     54,     55,     56,     57,     58,     59,     60,     61,     62,     63, 
//	    64,     65,     66,     67,     68,     69,     70,     71,     72,     73,     74,     75,     76,     77,     78,     79, 
//	    80,     81,     82,     83,     84,     85,     86,     87,     88,     89,     90,     91,     92,     93,     94,     95, 
//	    96,     97,     98,     99,    100,    101,    102,    103,    104,    105,    106,    107,    108,    109,    110,    111, 
//	   112,    113,    114,    115,    116,    117,    118,    119,    120,    121,    122,    123,    124,    125,    126,    127, 
//	   128,    129,    130,    131,    132,    133,    134,    135,    136,    137,    138,    139,    140,    141,    142,    143, 
//	   144,    145,    146,    147,    148,    149,    150,    151,    152,    153,    154,    155,    156,    157,    158,    159, 
//	   160,    161,    162,    163,    164,    165,    166,    167,    168,    169,    170,    171,    172,    173,    174,    175, 
//	   176,    177,    178,    179,    180,    181,    182,    183,    184,    185,    186,    187,    188,    189,    190,    191, 
//	   192,    193,    194,    195,    196,    197,    198,    199,    200,    201,    202,    203,    204,    205,    206,    207, 
//	   208,    209,    210,    211,    212,    213,    214,    215,    216,    217,    218,    219,    220,    221,    222,    223, 
//	   224,    225,    226,    227,    228,    229,    230,    231,    232,    233,    234,    235,    236,    237,    238,    239, 
//	   240,    241,    242,    243,    244,    245,    246,    247,    248,    249,    250,    251,    252,    253,    254,    255, 
//	   256,    257,    258,    259,    260,    261,    262,    263,    264,    265,    266,    267,    268,    269,    270,    271, 
//	   272,    273,    274,    275,    276,    277,    278,    279,    280,    281,    282,    283,    284,    285,    286,    287, 
//	   288,    289,    290,    291,    292,    293,    294,    295,    296,    297,    298,    299,    300,    301,    302,    303, 
//	   304,    305,    306,    307,    308,    309,    310,    311,    312,    313,    314,    315,    316,    317,    318,    319, 
//	   320,    321,    322,    323,    324,    325,    326,    327,    328,    329,    330,    331,    332,    333,    334,    335, 
//	   336,    337,    338,    339,    340,    341,    342,    343,    344,    345,    346,    347,    348,    349,    350,    351, 
//	   352,    353,    354,    355,    356,    357,    358,    359,    360,    361,    362,    363,    364,    365,    366,    367, 
//	   368,    369,    370,    371,    372,    373,    374,    375,    376,    377,    378,    379,    380,    381,    382,    383, 
//	   384,    385,    386,    387,    388,    389,    390,    391,    392,    393,    394,    395,    396,    397,    398,    399, 
//	   400,    401,    402,    403,    404,    405,    406,    407,    408,    409,    410,    411,    412,    413,    414,    415, 
//	   416,    417,    418,    419,    420,    421,    422,    423,    424,    425,    426,    427,    428,    429,    430,    431, 
//	   432,    433,    434,    435,    436,    437,    438,    439,    440,    441,    442,    443,    444,    445,    446,    447, 
//	   448,    449,    450,    451,    452,    453,    454,    455,    456,    457,    458,    459,    460,    461,    462,    463, 
//	   464,    465,    466,    467,    468,    469,    470,    471,    472,    473,    474,    475,    476,    477,    478,    479, 
//	   480,    481,    482,    483,    484,    485,    486,    487,    488,    489,    490,    491,    492,    493,    494,    495, 
//	   496,    497,    498,    499,    500,    501,    502,    503,    504,    505,    506,    507,    508,    509,    510,    511, 
//	   512,    513,    514,    515,    516,    517,    518,    519,    520,    521,    522,    523,    524,    525,    526,    527, 
//	   528,    529,    530,    531,    532,    533,    534,    535,    536,    537,    538,    539,    540,    541,    542,    543, 
//	   544,    545,    546,    547,    548,    549,    550,    551,    552,    553,    554,    555,    556,    557,    558,    559, 
//	   560,    561,    562,    563,    564,    565,    566,    567,    568,    569,    570,    571,    572,    573,    574,    575, 
//	   576,    577,    578,    579,    580,    581,    582,    583,    584,    585,    586,    587,    588,    589,    590,    591, 
//	   592,    593,    594,    595,    596,    597,    598,    599,    600,    601,    602,    603,    604,    605,    606,    607, 
//	   608,    609,    610,    611,    612,    613,    614,    615,    616,    617,    618,    619,    620,    621,    622,    623, 
//	   624,    625,    626,    627,    628,    629,    630,    631,    632,    633,    634,    635,    636,    637,    638,    639, 
//	   640,    641,    642,    643,    644,    645,    646,    647,    648,    649,    650,    651,    652,    653,    654,    655, 
//	   656,    657,    658,    659,    660,    661,    662,    663,    664,    665,    666,    667,    668,    669,    670,    671, 
//	   672,    673,    674,    675,    676,    677,    678,    679,    680,    681,    682,    683,    684,    685,    686,    687, 
//	   688,    689,    690,    691,    692,    693,    694,    695,    696,    697,    698,    699,    700,    701,    702,    703, 
//	   704,    705,    706,    707,    708,    709,    710,    711,    712,    713,    714,    715,    716,    717,    718,    719, 
//	   720,    721,    722,    723,    724,    725,    726,    727,    728,    729,    730,    731,    732,    733,    734,    735, 
//	   736,    737,    738,    739,    740,    741,    742,    743,    744,    745,    746,    747,    748,    749,    750,    751, 
//	   752,    753,    754,    755,    756,    757,    758,    759,    760,    761,    762,    763,    764,    765,    766,    767, 
//	   768,    769,    770,    771,    772,    773,    774,    775,    776,    777,    778,    779,    780,    781,    782,    783, 
//	   784,    785,    786,    787,    788,    789,    790,    791,    792,    793,    794,    795,    796,    797,    798,    799, 
//	   800,    801,    802,    803,    804,    805,    806,    807,    808,    809,    810,    811,    812,    813,    814,    815, 
//	   816,    817,    818,    819,    820,    821,    822,    823,    824,    825,    826,    827,    828,    829,    830,    831, 
//	   832,    833,    834,    835,    836,    837,    838,    839,    840,    841,    842,    843,    844,    845,    846,    847, 
//	   848,    849,    850,    851,    852,    853,    854,    855,    856,    857,    858,    859,    860,    861,    862,    863, 
//	   864,    865,    866,    867,    868,    869,    870,    871,    872,    873,    874,    875,    876,    877,    878,    879, 
//	   880,    881,    882,    883,    884,    885,    886,    887,    888,    889,    890,    891,    892,    893,    894,    895, 
//	   896,    897,    898,    899,    900,    901,    902,    903,    904,    905,    906,    907,    908,    909,    910,    911, 
//	   912,    913,    914,    915,    916,    917,    918,    919,    920,    921,    922,    923,    924,    925,    926,    927, 
//	   928,    929,    930,    931,    932,    933,    934,    935,    936,    937,    938,    939,    940,    941,    942,    943, 
//	   944,    945,    946,    947,    948,    949,    950,    951,    952,    953,    954,    955,    956,    957,    958,    959, 
//	   960,    961,    962,    963,    964,    965,    966,    967,    968,    969,    970,    971,    972,    973,    974,    975, 
//	   976,    977,    978,    979,    980,    981,    982,    983,    984,    985,    986,    987,    988,    989,    990,    991, 
//	   992,    993,    994,    995,    996,    997,    998,    999,   1000,   1001,   1002,   1003,   1004,   1005,   1006,   1007, 
//	  1008,   1009,   1010,   1011,   1012,   1013,   1014,   1015,   1016,   1017,   1018,   1019,   1020,   1021,   1022,   1023, 
//	  1024,   1025,   1026,   1027,   1028,   1029,   1030,   1031,   1032,   1033,   1034,   1035,   1036,   1037,   1038,   1039, 
//	  1040,   1041,   1042,   1043,   1044,   1045,   1046,   1047,   1048,   1049,   1050,   1051,   1052,   1053,   1054,   1055, 
//	  1056,   1057,   1058,   1059,   1060,   1061,   1062,   1063,   1064,   1065,   1066,   1067,   1068,   1069,   1070,   1071, 
//	  1072,   1073,   1074,   1075,   1076,   1077,   1078,   1079,   1080,   1081,   1082,   1083,   1084,   1085,   1086,   1087, 
//	  1088,   1089,   1090,   1091,   1092,   1093,   1094,   1095,   1096,   1097,   1098,   1099,   1100,   1101,   1102,   1103, 
//	  1104,   1105,   1106,   1107,   1108,   1109,   1110,   1111,   1112,   1113,   1114,   1115,   1116,   1117,   1118,   1119, 
//	  1120,   1121,   1122,   1123,   1124,   1125,   1126,   1127,   1128,   1129,   1130,   1131,   1132,   1133,   1134,   1135, 
//	  1136,   1137,   1138,   1139,   1140,   1141,   1142,   1143,   1144,   1145,   1146,   1147,   1148,   1149,   1150,   1151, 
//	  1152,   1153,   1154,   1155,   1156,   1157,   1158,   1159,   1160,   1161,   1162,   1163,   1164,   1165,   1166,   1167, 
//	  1168,   1169,   1170,   1171,   1172,   1173,   1174,   1175,   1176,   1177,   1178,   1179,   1180,   1181,   1182,   1183, 
//	  1184,   1185,   1186,   1187,   1188,   1189,   1190,   1191,   1192,   1193,   1194,   1195,   1196,   1197,   1198,   1199, 
//	  1200,   1201,   1202,   1203,   1204,   1205,   1206,   1207,   1208,   1209,   1210,   1211,   1212,   1213,   1214,   1215, 
//	  1216,   1217,   1218,   1219,   1220,   1221,   1222,   1223,   1224,   1225,   1226,   1227,   1228,   1229,   1230,   1231, 
//	  1232,   1233,   1234,   1235,   1236,   1237,   1238,   1239,   1240,   1241,   1242,   1243,   1244,   1245,   1246,   1247,