说明：  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 )
(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 ) )