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Macros | |
| #define | JPEG_INTERNALS |
| #define | CONST_BITS 13 |
| #define | PASS1_BITS 2 |
| #define | FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */ |
| #define | FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */ |
| #define | FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */ |
| #define | FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */ |
| #define | FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */ |
| #define | FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */ |
| #define | FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */ |
| #define | FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */ |
| #define | FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */ |
| #define | FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */ |
| #define | FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */ |
| #define | FIX_3_072711026 ((INT32) 25172) /* FIX(3.072711026) */ |
| #define | MULTIPLY(var, const) MULTIPLY16C16(var,const) |
| #define | DEQUANTIZE(coef, quantval) (((ISLOW_MULT_TYPE) (coef)) * (quantval)) |
Functions | |
| jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col) | |
Macro Definition Documentation
◆ CONST_BITS
| #define CONST_BITS 13 |
Definition at line 60 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ DEQUANTIZE
| #define DEQUANTIZE | ( | coef, | |
| quantval | |||
| ) | (((ISLOW_MULT_TYPE) (coef)) * (quantval)) |
Definition at line 122 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_0_298631336
Definition at line 75 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_0_390180644
Definition at line 76 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_0_541196100
Definition at line 77 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_0_765366865
Definition at line 78 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_0_899976223
Definition at line 79 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_1_175875602
Definition at line 80 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_1_501321110
Definition at line 81 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_1_847759065
Definition at line 82 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_1_961570560
Definition at line 83 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_2_053119869
Definition at line 84 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_2_562915447
Definition at line 85 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ FIX_3_072711026
Definition at line 86 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ JPEG_INTERNALS
| #define JPEG_INTERNALS |
Definition at line 10 of file jidctint.cpp.
◆ MULTIPLY
| #define MULTIPLY | ( | var, | |
| const | |||
| ) | MULTIPLY16C16(var,const) |
Definition at line 111 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
◆ PASS1_BITS
| #define PASS1_BITS 2 |
Definition at line 61 of file jidctint.cpp.
Referenced by jpeg_idct_islow().
Function Documentation
◆ jpeg_idct_islow()
| jpeg_idct_islow | ( | j_decompress_ptr | cinfo, |
| jpeg_component_info * | compptr, | ||
| JCOEFPTR | coef_block, | ||
| JSAMPARRAY | output_buf, | ||
| JDIMENSION | output_col | ||
| ) |
Definition at line 130 of file jidctint.cpp.
References coef_block, compptr, CONST_BITS, jpeg_component_info::dct_table, DCTSIZE, DCTSIZE2, DEQUANTIZE, DESCALE, FIX_0_298631336, FIX_0_390180644, FIX_0_541196100, FIX_0_765366865, FIX_0_899976223, FIX_1_175875602, FIX_1_501321110, FIX_1_847759065, FIX_1_961570560, FIX_2_053119869, FIX_2_562915447, FIX_3_072711026, IDCT_range_limit, MULTIPLY, output_buf, output_col, PASS1_BITS, RANGE_MASK, and SHIFT_TEMPS.
Referenced by start_pass().