/*
 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "webrtc/modules/audio_coding/codecs/isac/fix/source/codec.h"
#include "webrtc/system_wrappers/include/cpu_features_wrapper.h"
#include "webrtc/test/gtest.h"

static const int kSamples = FRAMESAMPLES/2;
static const int32_t spec2time_out_expected_1[kSamples] = {
  -3366470, -2285227,
  -3415765, -2310215, -3118030, -2222470, -3030254, -2192091, -3423170,
  -2216041, -3305541, -2171936, -3195767, -2095779, -3153304, -2157560,
  -3071167, -2032108, -3101190, -1972016, -3103824, -2089118, -3139811,
  -1898337, -3102801, -2055082, -3029665, -1854140, -2962586, -1966454,
  -3071167, -1894588, -2851743, -1917315, -2848087, -1594932, -2799242,
  -1462184, -2845887, -1437599, -2691776, -1329637, -2770659, -1268491,
  -2625161, -1578991, -2460299, -1186385, -2365613, -1039354, -2322608,
  -958518, -2271749, -789860, -2254538, -850308, -2384436, -850959, -2133734,
  -587678, -2093316, -495115, -1973364, -475177, -1801282, -173507,
  -1848516, -158015, -1792018, -62648, -1643313, 214746, -1500758, 267077,
  -1450193, 560521, -1521579, 675283, -1345408, 857559, -1300822, 1116332,
  -1294533, 1241117, -1070027, 1263503, -983816, 1529821, -1019586,
  1910421, -955420, 2073688, -836459, 2401105, -653905, 2690474, -731425,
  2930131, -935234, 3299500, -875978, 3523432, -878906, 3924822, -1081630,
  4561267, -1203023, 5105274, -1510983, 6052762, -2294646, 7021597,
  -3108053, 8826736, -4935222, 11678789, -8442713, 18725700, -21526692,
  25420577, 19589811, -28108666, 12634054, -14483066, 6263217, -9979706,
  3665661, -7909736, 2531530, -6434896, 1700772, -5525393, 1479473,
  -4894262, 1231760, -4353044, 1032940, -3786590, 941152, -3331614,
  665090, -2851619, 830696, -2762201, 958007, -2483118, 788233, -2184965,
  804825, -1967306, 1007255, -1862474, 920889, -1457506, 755406, -1405841,
  890230, -1302124, 1161599, -701867, 1154163, -1083366, 1204743, -513581,
  1547264, -650636, 1493384, -285543, 1771863, -277906, 1841343, -9078,
  1751863, 230222, 1819578, 207170, 1978972, 398137, 2106468, 552155,
  1997624, 685213, 2129520, 601078, 2238736, 944591, 2441879, 1194178,
  2355280, 986124, 2393328, 1049005, 2417944, 1208368, 2489516, 1352023,
  2572118, 1445283, 2856081, 1532997, 2742279, 1615877, 2915274, 1808036,
  2856871, 1806936, 3241747, 1622461, 2978558, 1841297, 3010378, 1923666,
  3271367, 2126700, 3070935, 1956958, 3107588, 2128405, 3288872, 2114911,
  3315952, 2406651, 3344038, 2370199, 3368980, 2144361, 3305030, 2183803,
  3401450, 2523102, 3405463, 2452475, 3463355, 2421678, 3551968, 2431949,
  3477251, 2148125, 3244489, 2174090};
static const int32_t spec2time_out_expected_2[kSamples] = {
  1691694, -2499988, -2035547,
  1060469, 988634, -2044502, -306271, 2041000, 201454, -2289456, 93694,
  2129427, -369152, -1887834, 860796, 2089102, -929424, -1673956, 1395291,
  1785651, -1619673, -1380109, 1963449, 1093311, -2111007, -840456,
  2372786, 578119, -2242702, 89774, 2463304, -132717, -2121480, 643634,
  2277636, -1125999, -1995858, 1543748, 2227861, -1483779, -1495491,
  2102642, 1833876, -1920568, -958378, 2485101, 772261, -2454257, -24942,
  2918714, 136838, -2500453, 816118, 3039735, -746560, -2365815, 1586396,
  2714951, -1511696, -1942334, 2571792, 2182827, -2325335, -1311543,
  3055970, 1367220, -2737182, -110626, 3889222, 631008, -3280879, 853066,
  4122279, -706638, -3334449, 2148311, 3993512, -1846301, -3004894,
  3426779, 3329522, -3165264, -2242423, 4756866, 2557711, -4131280,
  -805259, 5702711, 1120592, -4852821, 743664, 6476444, -621186, -5465828,
  2815787, 6768835, -3017442, -5338409, 5658126, 6838454, -5492288,
  -4682382, 8874947, 6153814, -8832561, -2649251, 12817398, 4237692,
  -13000247, 1190661, 18986363, -115738, -19693978, 9908367, 30660381,
  -10632635, -37962068, 47022884, 89744622, -42087632, 40279224,
  -88869341, -47542383, 38572364, 10441576, -30339718, -9926740, 19896578,
  28009, -18886612, -1124047, 13232498, -4150304, -12770551, 2637074,
  9051831, -6162211, -8713972, 4557937, 5489716, -6862312, -5532349,
  5415449, 2791310, -6999367, -2790102, 5375806, 546222, -6486452,
  -821261, 4994973, -1278840, -5645501, 1060484, 3996285, -2503954,
  -4653629, 2220549, 3036977, -3282133, -3318585, 2780636, 1789880,
  -4004589, -2041031, 3105373, 574819, -3992722, -971004, 3001703,
  -676739, -3841508, 417284, 2897970, -1427018, -3058480, 1189948,
  2210960, -2268992, -2603272, 1949785, 1576172, -2720404, -1891738,
  2309456, 769178, -2975646, -707150, 2424652, -88039, -2966660, -65452,
  2320780, -957557, -2798978, 744640, 1879794, -1672081, -2365319,
  1253309, 1366383, -2204082, -1544367, 1801452, 613828, -2531994,
  -983847, 2064842, 118326, -2613790, -203220, 2219635, -730341, -2641861,
  563557, 1765434, -1329916, -2272927, 1037138, 1266725, -1939220,
  -1588643, 1754528, 816552, -2376303, -1099167, 1864999, 122477,
  -2422762, -400027, 1889228, -579916, -2490353, 287139, 2011318,
  -1176657, -2502978, 812896, 1116502, -1940211};
static const int16_t time2spec_out_expected_1[kSamples] = {
  20342, 23889, -10063, -9419,
  3242, 7280, -2012, -5029, 332, 4478, -97, -3244, -891, 3117, 773, -2204,
  -1335, 2009, 1236, -1469, -1562, 1277, 1366, -815, -1619, 599, 1449, -177,
  -1507, 116, 1294, 263, -1338, -244, 1059, 553, -1045, -549, 829, 826,
  -731, -755, 516, 909, -427, -853, 189, 1004, -184, -828, -108, 888, 72,
  -700, -280, 717, 342, -611, -534, 601, 534, -374, -646, 399, 567, -171,
  -720, 234, 645, -11, -712, -26, 593, 215, -643, -172, 536, 361, -527,
  -403, 388, 550, -361, -480, 208, 623, -206, -585, 41, 578, 12, -504,
  -182, 583, 218, -437, -339, 499, 263, -354, -450, 347, 456, -193, -524,
  212, 475, -74, -566, 94, 511, 112, -577, -201, 408, 217, -546, -295, 338,
  387, -13, 4, -46, 2, -76, 103, -83, 108, -55, 100, -150, 131, -156, 141,
  -171, 179, -190, 128, -227, 172, -214, 215, -189, 265, -244, 322, -335,
  337, -352, 358, -368, 362, -355, 366, -381, 403, -395, 411, -392, 446,
  -458, 504, -449, 507, -464, 452, -491, 481, -534, 486, -516, 560, -535,
  525, -537, 559, -554, 570, -616, 591, -585, 627, -509, 588, -584, 547,
  -610, 580, -614, 635, -620, 655, -554, 546, -591, 642, -590, 660, -656,
  629, -604, 620, -580, 617, -645, 648, -573, 612, -604, 584, -571, 597,
  -562, 627, -550, 560, -606, 529, -584, 568, -503, 532, -463, 512, -440,
  399, -457, 437, -349, 278, -317, 257, -220, 163, -8, -61, 18, -161, 367,
  -1306};
static const int16_t time2spec_out_expected_2[kSamples] = {
  14283, -11552, -15335, 6626,
  7554, -2150, -6309, 1307, 4523, -4, -3908, -314, 3001, 914, -2715, -1042,
  2094, 1272, -1715, -1399, 1263, 1508, -1021, -1534, 735, 1595, -439, -1447,
  155, 1433, 22, -1325, -268, 1205, 424, -1030, -608, 950, 643, -733, -787,
  661, 861, -502, -888, 331, 852, -144, -849, 19, 833, 99, -826, -154,
  771, 368, -735, -459, 645, 513, -491, -604, 431, 630, -314, -598, 183,
  622, -78, -612, -48, 641, 154, -645, -257, 610, 281, -529, -444, 450,
  441, -327, -506, 274, 476, -232, -570, 117, 554, -86, -531, -21, 572,
  151, -606, -221, 496, 322, -407, -388, 407, 394, -268, -428, 280, 505,
  -115, -588, 19, 513, -29, -539, -109, 468, 173, -501, -242, 442, 278,
  -478, -680, 656, -659, 656, -669, 602, -688, 612, -667, 612, -642, 627,
  -648, 653, -676, 596, -680, 655, -649, 678, -672, 587, -608, 637, -645,
  637, -620, 556, -580, 553, -635, 518, -599, 583, -501, 536, -544, 473,
  -552, 583, -511, 541, -532, 563, -486, 461, -453, 486, -388, 424, -416,
  432, -374, 399, -462, 364, -346, 293, -329, 331, -313, 281, -247, 309,
  -337, 241, -190, 207, -194, 179, -163, 155, -156, 117, -135, 107, -126,
  29, -22, 81, -8, 17, -61, -10, 8, -37, 80, -44, 72, -88, 65, -89, 130,
  -114, 181, -215, 189, -245, 260, -288, 294, -339, 344, -396, 407, -429,
  438, -439, 485, -556, 629, -612, 637, -645, 661, -737, 829, -830, 831,
  -1041};

class TransformTest : public testing::Test {
 protected:
   TransformTest() {
     WebRtcSpl_Init();
   }

   // Pass a function pointer to the Tester function.
   void Time2SpecTester(Time2Spec Time2SpecFunction) {
     // WebRtcIsacfix_Time2Spec functions hard coded the buffer lengths. It's a
     // large buffer but we have to test it here.
     int16_t data_in_1[kSamples] = {0};
     int16_t data_in_2[kSamples] = {0};
     int16_t data_out_1[kSamples] = {0};
     int16_t data_out_2[kSamples] = {0};

     for(int i = 0; i < kSamples; i++) {
       data_in_1[i] = i * i + 1777;
       data_in_2[i] = WEBRTC_SPL_WORD16_MAX / (i + 1) + 17;
     }

     Time2SpecFunction(data_in_1, data_in_2, data_out_1, data_out_2);

     for (int i = 0; i < kSamples; i++) {
       // We don't require bit-exact for ARM assembly code.
       EXPECT_LE(abs(time2spec_out_expected_1[i] - data_out_1[i]), 1);
       EXPECT_LE(abs(time2spec_out_expected_2[i] - data_out_2[i]), 1);
     }
   }

  // Pass a function pointer to the Tester function.
  void Spec2TimeTester(Spec2Time Spec2TimeFunction) {
    // WebRtcIsacfix_Spec2Time functions hard coded the buffer lengths. It's a
    // large buffer but we have to test it here.
    int16_t data_in_1[kSamples] = {0};
    int16_t data_in_2[kSamples] = {0};
    int32_t data_out_1[kSamples] = {0};
    int32_t data_out_2[kSamples] = {0};
    for(int i = 0; i < kSamples; i++) {
      data_in_1[i] = i * i + 1777;
      data_in_2[i] = WEBRTC_SPL_WORD16_MAX / (i + 1) + 17;
    }

    Spec2TimeFunction(data_in_1, data_in_2, data_out_1, data_out_2);

    for (int i = 0; i < kSamples; i++) {
      // We don't require bit-exact for ARM assembly code.
      EXPECT_LE(abs(spec2time_out_expected_1[i] - data_out_1[i]), 16);
      EXPECT_LE(abs(spec2time_out_expected_2[i] - data_out_2[i]), 16);
    }
  }

};

TEST_F(TransformTest, Time2SpecTest) {
  Time2SpecTester(WebRtcIsacfix_Time2SpecC);
#if defined(WEBRTC_HAS_NEON)
  Time2SpecTester(WebRtcIsacfix_Time2SpecNeon);
#endif
}

TEST_F(TransformTest, Spec2TimeTest) {
  Spec2TimeTester(WebRtcIsacfix_Spec2TimeC);
#if defined(WEBRTC_HAS_NEON)
  Spec2TimeTester(WebRtcIsacfix_Spec2TimeNeon);
#endif
}