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Defines | |
| #define | CONST_SCALE (ONE << CONST_BITS) |
| #define | DESCALE(x, n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) |
| #define | FIX(x) ((INT32) ((x) * CONST_SCALE + 0.5)) |
| #define | IDCT_range_limit(cinfo) ((cinfo)->sample_range_limit + CENTERJSAMPLE) |
| #define | IFAST_SCALE_BITS 13 /* fractional bits in scale factors */ |
| #define | ONE ((INT32) 1) |
| #define | RANGE_MASK (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */ |
Typedefs | |
| typedef INT32 | DCTELEM |
| typedef FAST_FLOAT | FLOAT_MULT_TYPE |
| typedef INT32 | IFAST_MULT_TYPE |
| typedef MULTIPLIER | ISLOW_MULT_TYPE |
Functions | |
| EXTERN (void) jpeg_fdct_islow JPP((DCTELEM *data)) | |
| typedef | JMETHOD (void, forward_DCT_method_ptr,(DCTELEM *data)) |
| typedef | JMETHOD (void, float_DCT_method_ptr,(FAST_FLOAT *data)) |
Variables | |
| jpeg_component_info JCOEFPTR | coef_block |
| jpeg_component_info * | compptr |
| jpeg_component_info JCOEFPTR JSAMPARRAY | output_buf |
| jpeg_component_info JCOEFPTR JSAMPARRAY JDIMENSION | output_col |
Define Documentation
| #define CONST_SCALE (ONE << CONST_BITS) |
| #define DESCALE | ( | x, | |
| n | |||
| ) | RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) |
| #define IDCT_range_limit | ( | cinfo | ) | ((cinfo)->sample_range_limit + CENTERJSAMPLE) |
| #define IFAST_SCALE_BITS 13 /* fractional bits in scale factors */ |
| #define RANGE_MASK (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */ |
Typedef Documentation
| typedef FAST_FLOAT FLOAT_MULT_TYPE |
| typedef INT32 IFAST_MULT_TYPE |
| typedef MULTIPLIER ISLOW_MULT_TYPE |