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/*
* Copyright (c) 2011 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 <string>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/test/testsupport/fileutils.h"
#include "webrtc_cng.h"
namespace webrtc {
enum {
kSidShortIntervalUpdate = 1,
kSidNormalIntervalUpdate = 100,
kSidLongIntervalUpdate = 10000
};
enum {
kCNGNumParamsLow = 0,
kCNGNumParamsNormal = 8,
kCNGNumParamsHigh = WEBRTC_CNG_MAX_LPC_ORDER,
kCNGNumParamsTooHigh = WEBRTC_CNG_MAX_LPC_ORDER + 1
};
enum {
kNoSid,
kForceSid
};
class CngTest : public ::testing::Test {
protected:
CngTest();
virtual void SetUp();
CNG_enc_inst* cng_enc_inst_;
CNG_dec_inst* cng_dec_inst_;
int16_t speech_data_[640]; // Max size of CNG internal buffers.
};
CngTest::CngTest()
: cng_enc_inst_(NULL),
cng_dec_inst_(NULL) {
}
void CngTest::SetUp() {
FILE* input_file;
const std::string file_name =
webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm");
input_file = fopen(file_name.c_str(), "rb");
ASSERT_TRUE(input_file != NULL);
ASSERT_EQ(640, static_cast<int32_t>(fread(speech_data_, sizeof(int16_t),
640, input_file)));
fclose(input_file);
input_file = NULL;
}
// Test failing Create.
TEST_F(CngTest, CngCreateFail) {
// Test to see that an invalid pointer is caught.
EXPECT_EQ(-1, WebRtcCng_CreateEnc(NULL));
EXPECT_EQ(-1, WebRtcCng_CreateDec(NULL));
}
// Test normal Create.
TEST_F(CngTest, CngCreate) {
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_CreateDec(&cng_dec_inst_));
EXPECT_TRUE(cng_enc_inst_ != NULL);
EXPECT_TRUE(cng_dec_inst_ != NULL);
// Free encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_FreeDec(cng_dec_inst_));
}
// Create CNG encoder, init with faulty values, free CNG encoder.
TEST_F(CngTest, CngInitFail) {
// Create encoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
// Call with too few parameters.
EXPECT_EQ(-1, WebRtcCng_InitEnc(cng_enc_inst_, 8000, kSidNormalIntervalUpdate,
kCNGNumParamsLow));
EXPECT_EQ(6130, WebRtcCng_GetErrorCodeEnc(cng_enc_inst_));
// Call with too many parameters.
EXPECT_EQ(-1, WebRtcCng_InitEnc(cng_enc_inst_, 8000, kSidNormalIntervalUpdate,
kCNGNumParamsTooHigh));
EXPECT_EQ(6130, WebRtcCng_GetErrorCodeEnc(cng_enc_inst_));
// Free encoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
}
TEST_F(CngTest, CngEncode) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create encoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
// 8 kHz, Normal number of parameters
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 8000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 80, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 80, sid_data, &number_bytes, kForceSid));
// 16 kHz, Normal number of parameters
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 160, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 160, sid_data, &number_bytes, kForceSid));
// 32 kHz, Max number of parameters
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 32000, kSidNormalIntervalUpdate,
kCNGNumParamsHigh));
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 320, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(kCNGNumParamsHigh + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 320, sid_data, &number_bytes, kForceSid));
// 48 kHz, Normal number of parameters
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 48000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 480, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 480, sid_data, &number_bytes, kForceSid));
// 64 kHz, Normal number of parameters
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 64000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 640, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 640, sid_data, &number_bytes, kForceSid));
// Free encoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
}
// Encode Cng with too long input vector.
TEST_F(CngTest, CngEncodeTooLong) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create and init encoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 8000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
// Run encoder with too much data.
EXPECT_EQ(-1, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 641, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(6140, WebRtcCng_GetErrorCodeEnc(cng_enc_inst_));
// Free encoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
}
// Call encode without calling init.
TEST_F(CngTest, CngEncodeNoInit) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create encoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
// Run encoder without calling init.
EXPECT_EQ(-1, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 640, sid_data,
&number_bytes, kNoSid));
EXPECT_EQ(6120, WebRtcCng_GetErrorCodeEnc(cng_enc_inst_));
// Free encoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
}
// Update SID parameters, for both 9 and 16 parameters.
TEST_F(CngTest, CngUpdateSid) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create and initialize encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_CreateDec(&cng_dec_inst_));
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_InitDec(cng_dec_inst_));
// Run normal Encode and UpdateSid.
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 160, sid_data, &number_bytes, kForceSid));
EXPECT_EQ(0, WebRtcCng_UpdateSid(cng_dec_inst_, sid_data,
kCNGNumParamsNormal + 1));
// Reinit with new length.
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidNormalIntervalUpdate,
kCNGNumParamsHigh));
EXPECT_EQ(0, WebRtcCng_InitDec(cng_dec_inst_));
// Expect 0 because of unstable parameters after switching length.
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 160, sid_data,
&number_bytes, kForceSid));
EXPECT_EQ(kCNGNumParamsHigh + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_ + 160, 160, sid_data, &number_bytes,
kForceSid));
EXPECT_EQ(0, WebRtcCng_UpdateSid(cng_dec_inst_, sid_data,
kCNGNumParamsNormal + 1));
// Free encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_FreeDec(cng_dec_inst_));
}
// Update SID parameters, with wrong parameters or without calling decode.
TEST_F(CngTest, CngUpdateSidErroneous) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_CreateDec(&cng_dec_inst_));
// Encode.
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 160, sid_data, &number_bytes, kForceSid));
// Update Sid before initializing decoder.
EXPECT_EQ(-1, WebRtcCng_UpdateSid(cng_dec_inst_, sid_data,
kCNGNumParamsNormal + 1));
EXPECT_EQ(6220, WebRtcCng_GetErrorCodeDec(cng_dec_inst_));
// Initialize decoder.
EXPECT_EQ(0, WebRtcCng_InitDec(cng_dec_inst_));
// First run with valid parameters, then with too many CNG parameters.
// The function will operate correctly by only reading the maximum number of
// parameters, skipping the extra.
EXPECT_EQ(0, WebRtcCng_UpdateSid(cng_dec_inst_, sid_data,
kCNGNumParamsNormal + 1));
EXPECT_EQ(0, WebRtcCng_UpdateSid(cng_dec_inst_, sid_data,
kCNGNumParamsTooHigh + 1));
// Free encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_FreeDec(cng_dec_inst_));
}
// Test to generate cng data, by forcing SID. Both normal and faulty condition.
TEST_F(CngTest, CngGenerate) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t out_data[640];
int16_t number_bytes;
// Create and initialize encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_CreateDec(&cng_dec_inst_));
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_InitDec(cng_dec_inst_));
// Normal Encode.
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 160, sid_data, &number_bytes, kForceSid));
// Normal UpdateSid.
EXPECT_EQ(0, WebRtcCng_UpdateSid(cng_dec_inst_, sid_data,
kCNGNumParamsNormal + 1));
// Two normal Generate, one with new_period.
EXPECT_EQ(0, WebRtcCng_Generate(cng_dec_inst_, out_data, 640, 1));
EXPECT_EQ(0, WebRtcCng_Generate(cng_dec_inst_, out_data, 640, 0));
// Call Genereate with too much data.
EXPECT_EQ(-1, WebRtcCng_Generate(cng_dec_inst_, out_data, 641, 0));
EXPECT_EQ(6140, WebRtcCng_GetErrorCodeDec(cng_dec_inst_));
// Free encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_FreeDec(cng_dec_inst_));
}
// Test automatic SID.
TEST_F(CngTest, CngAutoSid) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create and initialize encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_CreateDec(&cng_dec_inst_));
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidNormalIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_InitDec(cng_dec_inst_));
// Normal Encode, 100 msec, where no SID data should be generated.
for (int i = 0; i < 10; i++) {
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 160, sid_data,
&number_bytes, kNoSid));
}
// We have reached 100 msec, and SID data should be generated.
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 160, sid_data, &number_bytes, kNoSid));
// Free encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_FreeDec(cng_dec_inst_));
}
// Test automatic SID, with very short interval.
TEST_F(CngTest, CngAutoSidShort) {
uint8_t sid_data[WEBRTC_CNG_MAX_LPC_ORDER + 1];
int16_t number_bytes;
// Create and initialize encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_CreateEnc(&cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_CreateDec(&cng_dec_inst_));
EXPECT_EQ(0, WebRtcCng_InitEnc(cng_enc_inst_, 16000, kSidShortIntervalUpdate,
kCNGNumParamsNormal));
EXPECT_EQ(0, WebRtcCng_InitDec(cng_dec_inst_));
// First call will never generate SID, unless forced to.
EXPECT_EQ(0, WebRtcCng_Encode(cng_enc_inst_, speech_data_, 160, sid_data,
&number_bytes, kNoSid));
// Normal Encode, 100 msec, SID data should be generated all the time.
for (int i = 0; i < 10; i++) {
EXPECT_EQ(kCNGNumParamsNormal + 1, WebRtcCng_Encode(
cng_enc_inst_, speech_data_, 160, sid_data, &number_bytes, kNoSid));
}
// Free encoder and decoder memory.
EXPECT_EQ(0, WebRtcCng_FreeEnc(cng_enc_inst_));
EXPECT_EQ(0, WebRtcCng_FreeDec(cng_dec_inst_));
}
} // namespace webrtc
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