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      1 /*
      2  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "testing/gtest/include/gtest/gtest.h"
     12 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
     13 #include "webrtc/modules/audio_coding/codecs/isac/fix/source/filterbank_internal.h"
     14 #include "webrtc/modules/audio_coding/codecs/isac/fix/source/filterbank_tables.h"
     15 #include "webrtc/modules/audio_coding/codecs/isac/fix/source/settings.h"
     16 #include "webrtc/system_wrappers/include/cpu_features_wrapper.h"
     17 #include "webrtc/typedefs.h"
     18 
     19 class FilterBanksTest : public testing::Test {
     20  protected:
     21   // Pass a function pointer to the Tester function.
     22   void CalculateResidualEnergyTester(AllpassFilter2FixDec16
     23                                      AllpassFilter2FixDec16Function) {
     24     const int kSamples = QLOOKAHEAD;
     25     const int kState = 2;
     26     int16_t data_ch1[kSamples] = {0};
     27     int16_t data_ch2[kSamples] = {0};
     28     int32_t state_ch1[kState] = {0};
     29     int32_t state_ch2[kState] = {0};
     30     const int32_t out_state_ch1[kState] = {-809122714, 1645972152};
     31     const int32_t out_state_ch2[kState] = {428019288, 1057309936};
     32     const int32_t out_data_ch1[kSamples] = {0, 0, 347, 10618, 16718, -7089,
     33         32767, 16913, 27042, 8377, -22973, -28372, -27603, -14804, 398, -25332,
     34         -11200, 18044, 25223, -6839, 1116, -23984, 32717, 7364};
     35     const int32_t out_data_ch2[kSamples] = {0, 0, 3010, 22351, 21106, 16969,
     36         -2095, -664, 3513, -30980, 32767, -23839, 13335, 20289, -6831, 339,
     37         -17207, 32767, 4959, 6177, 32767, 16599, -4747, 20504};
     38     int sign = 1;
     39 
     40     for (int i = 0; i < kSamples; i++) {
     41       sign *= -1;
     42       data_ch1[i] = sign * WEBRTC_SPL_WORD32_MAX / (i * i + 1);
     43       data_ch2[i] = sign * WEBRTC_SPL_WORD32_MIN / (i * i + 1);
     44     };
     45 
     46     AllpassFilter2FixDec16Function(data_ch1,
     47                                    data_ch2,
     48                                    WebRtcIsacfix_kUpperApFactorsQ15,
     49                                    WebRtcIsacfix_kLowerApFactorsQ15,
     50                                    kSamples,
     51                                    state_ch1,
     52                                    state_ch2);
     53 
     54     for (int i = 0; i < kSamples; i++) {
     55       EXPECT_EQ(out_data_ch1[i], data_ch1[i]);
     56       EXPECT_EQ(out_data_ch2[i], data_ch2[i]);
     57     }
     58     for (int i = 0; i < kState; i++) {
     59       EXPECT_EQ(out_state_ch1[i], state_ch1[i]);
     60       EXPECT_EQ(out_state_ch2[i], state_ch2[i]);
     61     }
     62   }
     63 };
     64 
     65 TEST_F(FilterBanksTest, AllpassFilter2FixDec16Test) {
     66   CalculateResidualEnergyTester(WebRtcIsacfix_AllpassFilter2FixDec16C);
     67 #ifdef WEBRTC_DETECT_NEON
     68   if ((WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) != 0) {
     69     CalculateResidualEnergyTester(WebRtcIsacfix_AllpassFilter2FixDec16Neon);
     70   }
     71 #elif defined(WEBRTC_HAS_NEON)
     72   CalculateResidualEnergyTester(WebRtcIsacfix_AllpassFilter2FixDec16Neon);
     73 #endif
     74 }
     75 
     76 TEST_F(FilterBanksTest, HighpassFilterFixDec32Test) {
     77   const int kSamples = 20;
     78   int16_t in[kSamples];
     79   int32_t state[2] = {12345, 987654};
     80 #ifdef WEBRTC_ARCH_ARM_V7
     81   int32_t out[kSamples] = {-1040, -1035, -22875, -1397, -27604, 20018, 7917,
     82     -1279, -8552, -14494, -7558, -23537, -27258, -30554, -32768, -3432, -32768,
     83     25215, -27536, 22436};
     84 #else
     85   int32_t out[kSamples] = {-1040, -1035, -22875, -1397, -27604, 20017, 7915,
     86     -1280, -8554, -14496, -7561, -23541, -27263, -30560, -32768, -3441, -32768,
     87     25203, -27550, 22419};
     88 #endif
     89   HighpassFilterFixDec32 WebRtcIsacfix_HighpassFilterFixDec32;
     90 #if defined(MIPS_DSP_R1_LE)
     91   WebRtcIsacfix_HighpassFilterFixDec32 =
     92       WebRtcIsacfix_HighpassFilterFixDec32MIPS;
     93 #else
     94   WebRtcIsacfix_HighpassFilterFixDec32 = WebRtcIsacfix_HighpassFilterFixDec32C;
     95 #endif
     96 
     97   for (int i = 0; i < kSamples; i++) {
     98     in[i] = WEBRTC_SPL_WORD32_MAX / (i + 1);
     99   }
    100 
    101   WebRtcIsacfix_HighpassFilterFixDec32(in, kSamples,
    102       WebRtcIsacfix_kHPStCoeffOut1Q30, state);
    103 
    104   for (int i = 0; i < kSamples; i++) {
    105     EXPECT_EQ(out[i], in[i]);
    106   }
    107 }
    108