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Macros | Functions
jidctred.c File Reference
`#include "jinclude.h"`
`#include "jpeglib.h"`
`#include "jdct.h"`

Go to the source code of this file.

## Macros
#define | JPEG_INTERNALS
#define | CONST_BITS 13
#define | PASS1_BITS 2
#define | FIX_0_211164243 ((INT32) 1730) /* FIX(0.211164243) */
#define | FIX_0_509795579 ((INT32) 4176) /* FIX(0.509795579) */
#define | FIX_0_601344887 ((INT32) 4926) /* FIX(0.601344887) */
#define | FIX_0_720959822 ((INT32) 5906) /* FIX(0.720959822) */
#define | FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */
#define | FIX_0_850430095 ((INT32) 6967) /* FIX(0.850430095) */
#define | FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */
#define | FIX_1_061594337 ((INT32) 8697) /* FIX(1.061594337) */
#define | FIX_1_272758580 ((INT32) 10426) /* FIX(1.272758580) */
#define | FIX_1_451774981 ((INT32) 11893) /* FIX(1.451774981) */
#define | FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */
#define | FIX_2_172734803 ((INT32) 17799) /* FIX(2.172734803) */
#define | FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */
#define | FIX_3_624509785 ((INT32) 29692) /* FIX(3.624509785) */
#define | MULTIPLY(var, const) MULTIPLY16C16(var,const)
#define | DEQUANTIZE(coef, quantval) (((ISLOW_MULT_TYPE) (coef)) * (quantval))

## Functions
| jpeg_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)
| jpeg_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)
| jpeg_idct_1x1 (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)

## Macro Definition Documentation

#define CONST_BITS 13

Definition at line 43 of file jidctred.c.

#define DEQUANTIZE | ( |  | coef,
|  |  | quantval
| ) |  | (((ISLOW_MULT_TYPE) (coef)) * (quantval))

Definition at line 109 of file jidctred.c.

#define FIX_0_211164243 ((INT32) 1730) /* FIX(0.211164243) */

Definition at line 58 of file jidctred.c.

#define FIX_0_509795579 ((INT32) 4176) /* FIX(0.509795579) */

Definition at line 59 of file jidctred.c.

#define FIX_0_601344887 ((INT32) 4926) /* FIX(0.601344887) */

Definition at line 60 of file jidctred.c.

#define FIX_0_720959822 ((INT32) 5906) /* FIX(0.720959822) */

Definition at line 61 of file jidctred.c.

#define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */

Definition at line 62 of file jidctred.c.

#define FIX_0_850430095 ((INT32) 6967) /* FIX(0.850430095) */

Definition at line 63 of file jidctred.c.

#define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */

Definition at line 64 of file jidctred.c.

#define FIX_1_061594337 ((INT32) 8697) /* FIX(1.061594337) */

Definition at line 65 of file jidctred.c.

#define FIX_1_272758580 ((INT32) 10426) /* FIX(1.272758580) */

Definition at line 66 of file jidctred.c.

#define FIX_1_451774981 ((INT32) 11893) /* FIX(1.451774981) */

Definition at line 67 of file jidctred.c.

#define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */

Definition at line 68 of file jidctred.c.

#define FIX_2_172734803 ((INT32) 17799) /* FIX(2.172734803) */

Definition at line 69 of file jidctred.c.

#define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */

Definition at line 70 of file jidctred.c.

#define FIX_3_624509785 ((INT32) 29692) /* FIX(3.624509785) */

Definition at line 71 of file jidctred.c.

#define JPEG_INTERNALS

Definition at line 23 of file jidctred.c.

#define MULTIPLY | ( |  | var,
|  |  | const
| ) |  | MULTIPLY16C16(var,const)

Definition at line 98 of file jidctred.c.

#define PASS1_BITS 2

Definition at line 44 of file jidctred.c.

## Function Documentation

jpeg_idct_1x1 | ( | j_decompress_ptr | cinfo,
|  | jpeg_component_info * | compptr,
|  | JCOEFPTR | coef_block,
|  | JSAMPARRAY | output_buf,
|  | JDIMENSION | output_col
| ) |  |

Definition at line 379 of file jidctred.c.

jpeg_idct_2x2 | ( | j_decompress_ptr | cinfo,
|  | jpeg_component_info * | compptr,
|  | JCOEFPTR | coef_block,
|  | JSAMPARRAY | output_buf,
|  | JDIMENSION | output_col
| ) |  |

Definition at line 271 of file jidctred.c.

jpeg_idct_4x4 | ( | j_decompress_ptr | cinfo,
|  | jpeg_component_info * | compptr,
|  | JCOEFPTR | coef_block,
|  | JSAMPARRAY | output_buf,
|  | JDIMENSION | output_col
| ) |  |

Definition at line 118 of file jidctred.c.