This file include the DCT and IDCT transform of an image.

void show_DCT( void )

void DCT_8x8( float* data )

void IDCT_8x8( float* data )

void BDCT( float* input,int rows,int cols )

void BIDCT( float* input,int rows,int cols )

void get_8x8DCT( float* output, int pos_y, int pos_x, float* image, int rows, int cols )

void set_identity( float* data, int size, bool flag )

float* mult_8x8( float*data1,float*data2 )

float* sm_mult_8x8( float *C1, float *A, float *C2 )

float* add_8x8( float*data1,float*data2 )

void initial_fast()

void close_fast()

void get_fast_8x8DCT_sparse( float* output, int pos_y, int pos_x, float* input, int rows, int cols )

void get_fast_8x8DCT( float* output, int pos_y, int pos_x, float* input, int rows, int cols, bool sparse )