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Optimized function AllpassFilter2FixDec16() in isac fix for Android Neon platforms.

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With an offline test, codec cycles were reduced by 4%.
Review URL: https://webrtc-codereview.appspot.com/936007

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3066 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
kma@webrtc.org
2012-11-09 00:39:45 +00:00
parent b952a90038
commit fa65c851fe
8 changed files with 528 additions and 92 deletions
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96
webrtc/modules/audio_coding/codecs/isac/fix/test/isacfix_unittest.cc
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/*
* 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 <typedefs.h>
#include "gtest/gtest.h"
#include "modules/audio_coding/codecs/isac/fix/source/filterbank_internal.h"
#include "modules/audio_coding/codecs/isac/fix/source/filterbank_tables.h"
#include "modules/audio_coding/codecs/isac/fix/source/lpc_masking_model.h"
#include "system_wrappers/interface/cpu_features_wrapper.h"
class IsacUnitTest : public testing::Test {
protected:
// Pass a function pointer to the Tester function.
void CalculateResidualEnergyTester(CalculateResidualEnergy
CalculateResidualEnergyFunction) {
const int kIntOrder = 10;
const int32_t kInt32QDomain = 5;
const int kIntShift = 11;
int16_t a[kIntOrder + 1] = {32760, 122, 7, 0, -32760, -3958,
-48, 18745, 498, 9, 23456};
int32_t corr[kIntOrder + 1] = {11443647, -27495, 0,
98745, -11443600, 1, 1, 498, 9, 888, 23456};
int q_shift_residual = 0;
int32_t residual_energy = 0;
// Test the code path where (residual_energy >= 0x10000).
residual_energy = CalculateResidualEnergyFunction(kIntOrder,
kInt32QDomain, kIntShift, a, corr, &q_shift_residual);
EXPECT_EQ(1789023310, residual_energy);
EXPECT_EQ(2, q_shift_residual);
// Test the code path where (residual_energy < 0x10000)
// and ((energy & 0x8000) != 0).
for(int i = 0; i < kIntOrder + 1; i++) {
a[i] = 24575 >> i;
corr[i] = i;
}
residual_energy = CalculateResidualEnergyFunction(kIntOrder,
kInt32QDomain, kIntShift, a, corr, &q_shift_residual);
EXPECT_EQ(1595279092, residual_energy);
EXPECT_EQ(26, q_shift_residual);
// Test the code path where (residual_energy <= 0x7fff).
for(int i = 0; i < kIntOrder + 1; i++) {
a[i] = 2457 >> i;
}
residual_energy = CalculateResidualEnergyFunction(kIntOrder,
kInt32QDomain, kIntShift, a, corr, &q_shift_residual);
EXPECT_EQ(2029266944, residual_energy);
EXPECT_EQ(33, q_shift_residual);
}
};
TEST_F(IsacUnitTest, CalculateResidualEnergyTest) {
CalculateResidualEnergyTester(WebRtcIsacfix_CalculateResidualEnergyC);
#ifdef WEBRTC_DETECT_ARM_NEON
if ((WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) != 0) {
CalculateResidualEnergyTester(WebRtcIsacfix_CalculateResidualEnergyNeon);
}
#elif defined(WEBRTC_ARCH_ARM_NEON)
CalculateResidualEnergyTester(WebRtcIsacfix_CalculateResidualEnergyNeon);
#endif
}
TEST_F(IsacUnitTest, HighpassFilterFixDec32Test) {
const int kSamples = 20;
int16_t in[kSamples];
int32_t state[2] = {12345, 987654};
#ifdef WEBRTC_ARCH_ARM_V7
int32_t out[kSamples] = {-1040, -1035, -22875, -1397, -27604, 20018, 7917,
-1279, -8552, -14494, -7558, -23537, -27258, -30554, -32768, -3432, -32768,
25215, -27536, 22436};
#else
int32_t out[kSamples] = {-1040, -1035, -22875, -1397, -27604, 20017, 7915,
-1280, -8554, -14496, -7561, -23541, -27263, -30560, -32768, -3441, -32768,
25203, -27550, 22419};
#endif
for(int i = 0; i < kSamples; i++) {
in[i] = WEBRTC_SPL_WORD32_MAX / (i + 1);
}
WebRtcIsacfix_HighpassFilterFixDec32(in, kSamples,
WebRtcIsacfix_kHPStCoeffOut1Q30, state);
for(int i = 0; i < kSamples; i++) {
EXPECT_EQ(out[i], in[i]);
}
}