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