#include <gtest/gtest.h>#include "codec_api.h"#include <stddef.h> static void CheckFunctionOrder (int expect, int actual, const char* name) {  EXPECT_EQ (expect, actual) << "Wrong function order: " << name;} typedef void (*CheckFunc) (int, int, const char*);extern "C" void CheckEncoderInterface (ISVCEncoder* p, CheckFunc);extern "C" void CheckDecoderInterface (ISVCDecoder* p, CheckFunc);extern "C" size_t GetBoolSize (void);extern "C" size_t GetBoolOffset (void);extern "C" size_t GetBoolStructSize (void); // Store the 'this' pointer to verify 'this' is received as expected from C code.static void* gThis; /** * Return a unique number for each virtual function so that we are able to * check if the order of functions in the virtual table is as expected. */struct SVCEncoderImpl : public ISVCEncoder {  virtual ~SVCEncoderImpl() {}  virtual int EXTAPI Initialize (const SEncParamBase* pParam) {    EXPECT_TRUE (gThis == this);    return 1;  }  virtual int EXTAPI InitializeExt (const SEncParamExt* pParam) {    EXPECT_TRUE (gThis == this);    return 2;  }  virtual int EXTAPI GetDefaultParams (SEncParamExt* pParam) {    EXPECT_TRUE (gThis == this);    return 3;  }  virtual int EXTAPI Uninitialize() {    EXPECT_TRUE (gThis == this);    return 4;  }  virtual int EXTAPI EncodeFrame (const SSourcePicture* kpSrcPic,                                  SFrameBSInfo* pBsInfo) {    EXPECT_TRUE (gThis == this);    return 5;  }  virtual int EXTAPI EncodeParameterSets (SFrameBSInfo* pBsInfo) {    EXPECT_TRUE (gThis == this);    return 6;  }  virtual int EXTAPI ForceIntraFrame (bool bIDR) {    EXPECT_TRUE (gThis == this);    return 7;  }  virtual int EXTAPI SetOption (ENCODER_OPTION eOptionId, void* pOption) {    EXPECT_TRUE (gThis == this);    return 8;  }  virtual int EXTAPI GetOption (ENCODER_OPTION eOptionId, void* pOption) {    EXPECT_TRUE (gThis == this);    return 9;  }}; struct SVCDecoderImpl : public ISVCDecoder {  virtual ~SVCDecoderImpl() {}  virtual long EXTAPI Initialize (const SDecodingParam* pParam) {    EXPECT_TRUE (gThis == this);    return 1;  }  virtual long EXTAPI Uninitialize() {    EXPECT_TRUE (gThis == this);    return 2;  }  virtual DECODING_STATE EXTAPI DecodeFrame (const unsigned char* pSrc,      const int iSrcLen, unsigned char** ppDst, int* pStride,      int& iWidth, int& iHeight) {    EXPECT_TRUE (gThis == this);    return static_cast<DECODING_STATE> (3);  }  virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* pSrc,      const int iSrcLen, unsigned char** ppDst, SBufferInfo* pDstInfo) {    EXPECT_TRUE (gThis == this);    return static_cast<DECODING_STATE> (4);  }  virtual DECODING_STATE EXTAPI DecodeFrameEx (const unsigned char* pSrc,      const int iSrcLen, unsigned char* pDst, int iDstStride,      int& iDstLen, int& iWidth, int& iHeight, int& iColorFormat) {    EXPECT_TRUE (gThis == this);    return static_cast<DECODING_STATE> (5);  }  virtual long EXTAPI SetOption (DECODER_OPTION eOptionId, void* pOption) {    EXPECT_TRUE (gThis == this);    return 6;  }  virtual long EXTAPI GetOption (DECODER_OPTION eOptionId, void* pOption) {    EXPECT_TRUE (gThis == this);    return 7;  }}; TEST (ISVCEncoderTest, CheckFunctionOrder) {  SVCEncoderImpl* p = new SVCEncoderImpl;  gThis = p;  CheckEncoderInterface (p, CheckFunctionOrder);  delete p;} TEST (ISVCDecoderTest, CheckFunctionOrder) {  SVCDecoderImpl* p = new SVCDecoderImpl;  gThis = p;  CheckDecoderInterface (p, CheckFunctionOrder);  delete p;} struct bool_test_struct {  char c;  bool b;}; TEST (ISVCDecoderEncoderTest, CheckCAbi) {  EXPECT_EQ (sizeof (bool), GetBoolSize()) << "Wrong size of bool type";  EXPECT_EQ (offsetof (bool_test_struct, b), GetBoolOffset()) << "Wrong alignment of bool in a struct";  EXPECT_EQ (sizeof (bool_test_struct), GetBoolStructSize()) << "Wrong size of struct with a bool";}