FCL/sf/mw/qt: src/3rdparty/libjpeg/jdct.h@5dc02b23752f (annotated)

0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	1	/*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	2	* jdct.h
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	3	*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	4	* Copyright (C) 1994-1996, Thomas G. Lane.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	5	* This file is part of the Independent JPEG Group's software.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	6	* For conditions of distribution and use, see the accompanying README file.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	7	*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	8	* This include file contains common declarations for the forward and
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	9	* inverse DCT modules. These declarations are private to the DCT managers
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	10	* (jcdctmgr.c, jddctmgr.c) and the individual DCT algorithms.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	11	* The individual DCT algorithms are kept in separate files to ease
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	12	* machine-dependent tuning (e.g., assembly coding).
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	13	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	14
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	15
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	16	/*
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	17	* A forward DCT routine is given a pointer to an input sample array and
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	18	* a pointer to a work area of type DCTELEM[]; the DCT is to be performed
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	19	* in-place in that buffer. Type DCTELEM is int for 8-bit samples, INT32
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	20	* for 12-bit samples. (NOTE: Floating-point DCT implementations use an
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	21	* array of type FAST_FLOAT, instead.)
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	22	* The input data is to be fetched from the sample array starting at a
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	23	* specified column. (Any row offset needed will be applied to the array
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	24	* pointer before it is passed to the FDCT code.)
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	25	* Note that the number of samples fetched by the FDCT routine is
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	26	* DCT_h_scaled_size * DCT_v_scaled_size.
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	27	* The DCT outputs are returned scaled up by a factor of 8; they therefore
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	28	* have a range of +-8K for 8-bit data, +-128K for 12-bit data. This
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	29	* convention improves accuracy in integer implementations and saves some
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	30	* work in floating-point ones.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	31	* Quantization of the output coefficients is done by jcdctmgr.c.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	32	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	33
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	34	#if BITS_IN_JSAMPLE == 8
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	35	typedef int DCTELEM; /* 16 or 32 bits is fine */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	36	#else
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	37	typedef INT32 DCTELEM; /* must have 32 bits */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	38	#endif
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	39
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	40	typedef JMETHOD(void, forward_DCT_method_ptr, (DCTELEM * data,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	41	JSAMPARRAY sample_data,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	42	JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	43	typedef JMETHOD(void, float_DCT_method_ptr, (FAST_FLOAT * data,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	44	JSAMPARRAY sample_data,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	45	JDIMENSION start_col));
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	46
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	47
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	48	/*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	49	* An inverse DCT routine is given a pointer to the input JBLOCK and a pointer
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	50	* to an output sample array. The routine must dequantize the input data as
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	51	* well as perform the IDCT; for dequantization, it uses the multiplier table
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	52	* pointed to by compptr->dct_table. The output data is to be placed into the
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	53	* sample array starting at a specified column. (Any row offset needed will
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	54	* be applied to the array pointer before it is passed to the IDCT code.)
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	55	* Note that the number of samples emitted by the IDCT routine is
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	56	* DCT_h_scaled_size * DCT_v_scaled_size.
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	57	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	58
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	59	/* typedef inverse_DCT_method_ptr is declared in jpegint.h */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	60
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	61	/*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	62	* Each IDCT routine has its own ideas about the best dct_table element type.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	63	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	64
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	65	typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	66	#if BITS_IN_JSAMPLE == 8
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	67	typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	68	#define IFAST_SCALE_BITS 2 /* fractional bits in scale factors */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	69	#else
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	70	typedef INT32 IFAST_MULT_TYPE; /* need 32 bits for scaled quantizers */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	71	#define IFAST_SCALE_BITS 13 /* fractional bits in scale factors */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	72	#endif
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	73	typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	74
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	75
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	76	/*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	77	* Each IDCT routine is responsible for range-limiting its results and
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	78	* converting them to unsigned form (0..MAXJSAMPLE). The raw outputs could
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	79	* be quite far out of range if the input data is corrupt, so a bulletproof
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	80	* range-limiting step is required. We use a mask-and-table-lookup method
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	81	* to do the combined operations quickly. See the comments with
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	82	* prepare_range_limit_table (in jdmaster.c) for more info.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	83	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	84
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	85	#define IDCT_range_limit(cinfo) ((cinfo)->sample_range_limit + CENTERJSAMPLE)
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	86
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	87	#define RANGE_MASK (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	88
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	89
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	90	/* Short forms of external names for systems with brain-damaged linkers. */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	91
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	92	#ifdef NEED_SHORT_EXTERNAL_NAMES
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	93	#define jpeg_fdct_islow jFDislow
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	94	#define jpeg_fdct_ifast jFDifast
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	95	#define jpeg_fdct_float jFDfloat
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	96	#define jpeg_fdct_7x7 jFD7x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	97	#define jpeg_fdct_6x6 jFD6x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	98	#define jpeg_fdct_5x5 jFD5x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	99	#define jpeg_fdct_4x4 jFD4x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	100	#define jpeg_fdct_3x3 jFD3x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	101	#define jpeg_fdct_2x2 jFD2x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	102	#define jpeg_fdct_1x1 jFD1x1
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	103	#define jpeg_fdct_9x9 jFD9x9
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	104	#define jpeg_fdct_10x10 jFD10x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	105	#define jpeg_fdct_11x11 jFD11x11
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	106	#define jpeg_fdct_12x12 jFD12x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	107	#define jpeg_fdct_13x13 jFD13x13
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	108	#define jpeg_fdct_14x14 jFD14x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	109	#define jpeg_fdct_15x15 jFD15x15
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	110	#define jpeg_fdct_16x16 jFD16x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	111	#define jpeg_fdct_16x8 jFD16x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	112	#define jpeg_fdct_14x7 jFD14x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	113	#define jpeg_fdct_12x6 jFD12x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	114	#define jpeg_fdct_10x5 jFD10x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	115	#define jpeg_fdct_8x4 jFD8x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	116	#define jpeg_fdct_6x3 jFD6x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	117	#define jpeg_fdct_4x2 jFD4x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	118	#define jpeg_fdct_2x1 jFD2x1
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	119	#define jpeg_fdct_8x16 jFD8x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	120	#define jpeg_fdct_7x14 jFD7x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	121	#define jpeg_fdct_6x12 jFD6x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	122	#define jpeg_fdct_5x10 jFD5x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	123	#define jpeg_fdct_4x8 jFD4x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	124	#define jpeg_fdct_3x6 jFD3x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	125	#define jpeg_fdct_2x4 jFD2x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	126	#define jpeg_fdct_1x2 jFD1x2
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	127	#define jpeg_idct_islow jRDislow
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	128	#define jpeg_idct_ifast jRDifast
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	129	#define jpeg_idct_float jRDfloat
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	130	#define jpeg_idct_7x7 jRD7x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	131	#define jpeg_idct_6x6 jRD6x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	132	#define jpeg_idct_5x5 jRD5x5
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	133	#define jpeg_idct_4x4 jRD4x4
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	134	#define jpeg_idct_3x3 jRD3x3
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	135	#define jpeg_idct_2x2 jRD2x2
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	136	#define jpeg_idct_1x1 jRD1x1
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	137	#define jpeg_idct_9x9 jRD9x9
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	138	#define jpeg_idct_10x10 jRD10x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	139	#define jpeg_idct_11x11 jRD11x11
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	140	#define jpeg_idct_12x12 jRD12x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	141	#define jpeg_idct_13x13 jRD13x13
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	142	#define jpeg_idct_14x14 jRD14x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	143	#define jpeg_idct_15x15 jRD15x15
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	144	#define jpeg_idct_16x16 jRD16x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	145	#define jpeg_idct_16x8 jRD16x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	146	#define jpeg_idct_14x7 jRD14x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	147	#define jpeg_idct_12x6 jRD12x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	148	#define jpeg_idct_10x5 jRD10x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	149	#define jpeg_idct_8x4 jRD8x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	150	#define jpeg_idct_6x3 jRD6x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	151	#define jpeg_idct_4x2 jRD4x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	152	#define jpeg_idct_2x1 jRD2x1
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	153	#define jpeg_idct_8x16 jRD8x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	154	#define jpeg_idct_7x14 jRD7x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	155	#define jpeg_idct_6x12 jRD6x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	156	#define jpeg_idct_5x10 jRD5x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	157	#define jpeg_idct_4x8 jRD4x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	158	#define jpeg_idct_3x6 jRD3x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	159	#define jpeg_idct_2x4 jRD2x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	160	#define jpeg_idct_1x2 jRD1x2
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	161	#endif /* NEED_SHORT_EXTERNAL_NAMES */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	162
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	163	/* Extern declarations for the forward and inverse DCT routines. */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	164
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	165	EXTERN(void) jpeg_fdct_islow
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	166	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	167	EXTERN(void) jpeg_fdct_ifast
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	168	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	169	EXTERN(void) jpeg_fdct_float
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	170	JPP((FAST_FLOAT * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	171	EXTERN(void) jpeg_fdct_7x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	172	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	173	EXTERN(void) jpeg_fdct_6x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	174	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	175	EXTERN(void) jpeg_fdct_5x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	176	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	177	EXTERN(void) jpeg_fdct_4x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	178	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	179	EXTERN(void) jpeg_fdct_3x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	180	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	181	EXTERN(void) jpeg_fdct_2x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	182	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	183	EXTERN(void) jpeg_fdct_1x1
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	184	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	185	EXTERN(void) jpeg_fdct_9x9
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	186	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	187	EXTERN(void) jpeg_fdct_10x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	188	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	189	EXTERN(void) jpeg_fdct_11x11
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	190	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	191	EXTERN(void) jpeg_fdct_12x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	192	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	193	EXTERN(void) jpeg_fdct_13x13
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	194	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	195	EXTERN(void) jpeg_fdct_14x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	196	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	197	EXTERN(void) jpeg_fdct_15x15
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	198	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	199	EXTERN(void) jpeg_fdct_16x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	200	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	201	EXTERN(void) jpeg_fdct_16x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	202	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	203	EXTERN(void) jpeg_fdct_14x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	204	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	205	EXTERN(void) jpeg_fdct_12x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	206	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	207	EXTERN(void) jpeg_fdct_10x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	208	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	209	EXTERN(void) jpeg_fdct_8x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	210	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	211	EXTERN(void) jpeg_fdct_6x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	212	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	213	EXTERN(void) jpeg_fdct_4x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	214	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	215	EXTERN(void) jpeg_fdct_2x1
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	216	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	217	EXTERN(void) jpeg_fdct_8x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	218	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	219	EXTERN(void) jpeg_fdct_7x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	220	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	221	EXTERN(void) jpeg_fdct_6x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	222	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	223	EXTERN(void) jpeg_fdct_5x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	224	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	225	EXTERN(void) jpeg_fdct_4x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	226	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	227	EXTERN(void) jpeg_fdct_3x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	228	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	229	EXTERN(void) jpeg_fdct_2x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	230	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	231	EXTERN(void) jpeg_fdct_1x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	232	JPP((DCTELEM * data, JSAMPARRAY sample_data, JDIMENSION start_col));
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	233
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	234	EXTERN(void) jpeg_idct_islow
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	235	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	236	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	237	EXTERN(void) jpeg_idct_ifast
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	238	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	239	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	240	EXTERN(void) jpeg_idct_float
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	241	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	242	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	243	EXTERN(void) jpeg_idct_7x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	244	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	245	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	246	EXTERN(void) jpeg_idct_6x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	247	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	248	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	249	EXTERN(void) jpeg_idct_5x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	250	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	251	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	252	EXTERN(void) jpeg_idct_4x4
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	253	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	254	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	255	EXTERN(void) jpeg_idct_3x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	256	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	257	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	258	EXTERN(void) jpeg_idct_2x2
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	259	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	260	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	261	EXTERN(void) jpeg_idct_1x1
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	262	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	263	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
30 5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	264	EXTERN(void) jpeg_idct_9x9
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	265	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	266	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	267	EXTERN(void) jpeg_idct_10x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	268	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	269	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	270	EXTERN(void) jpeg_idct_11x11
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	271	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	272	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	273	EXTERN(void) jpeg_idct_12x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	274	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	275	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	276	EXTERN(void) jpeg_idct_13x13
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	277	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	278	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	279	EXTERN(void) jpeg_idct_14x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	280	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	281	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	282	EXTERN(void) jpeg_idct_15x15
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	283	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	284	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	285	EXTERN(void) jpeg_idct_16x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	286	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	287	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	288	EXTERN(void) jpeg_idct_16x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	289	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	290	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	291	EXTERN(void) jpeg_idct_14x7
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	292	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	293	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	294	EXTERN(void) jpeg_idct_12x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	295	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	296	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	297	EXTERN(void) jpeg_idct_10x5
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	298	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	299	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	300	EXTERN(void) jpeg_idct_8x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	301	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	302	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	303	EXTERN(void) jpeg_idct_6x3
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	304	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	305	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	306	EXTERN(void) jpeg_idct_4x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	307	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	308	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	309	EXTERN(void) jpeg_idct_2x1
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	310	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	311	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	312	EXTERN(void) jpeg_idct_8x16
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	313	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	314	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	315	EXTERN(void) jpeg_idct_7x14
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	316	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	317	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	318	EXTERN(void) jpeg_idct_6x12
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	319	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	320	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	321	EXTERN(void) jpeg_idct_5x10
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	322	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	323	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	324	EXTERN(void) jpeg_idct_4x8
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	325	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	326	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	327	EXTERN(void) jpeg_idct_3x6
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	328	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	329	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	330	EXTERN(void) jpeg_idct_2x4
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	331	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	332	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	333	EXTERN(void) jpeg_idct_1x2
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	334	JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
5dc02b23752f Revision: 201025 Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> parents: 0 diff changeset	335	JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
0 1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	336
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	337
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	338	/*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	339	* Macros for handling fixed-point arithmetic; these are used by many
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	340	* but not all of the DCT/IDCT modules.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	341	*
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	342	* All values are expected to be of type INT32.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	343	* Fractional constants are scaled left by CONST_BITS bits.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	344	* CONST_BITS is defined within each module using these macros,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	345	* and may differ from one module to the next.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	346	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	347
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	348	#define ONE ((INT32) 1)
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	349	#define CONST_SCALE (ONE << CONST_BITS)
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	350
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	351	/* Convert a positive real constant to an integer scaled by CONST_SCALE.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	352	* Caution: some C compilers fail to reduce "FIX(constant)" at compile time,
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	353	* thus causing a lot of useless floating-point operations at run time.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	354	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	355
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	356	#define FIX(x) ((INT32) ((x) * CONST_SCALE + 0.5))
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	357
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	358	/* Descale and correctly round an INT32 value that's scaled by N bits.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	359	* We assume RIGHT_SHIFT rounds towards minus infinity, so adding
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	360	* the fudge factor is correct for either sign of X.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	361	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	362
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	363	#define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	364
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	365	/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	366	* This macro is used only when the two inputs will actually be no more than
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	367	* 16 bits wide, so that a 16x16->32 bit multiply can be used instead of a
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	368	* full 32x32 multiply. This provides a useful speedup on many machines.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	369	* Unfortunately there is no way to specify a 16x16->32 multiply portably
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	370	* in C, but some C compilers will do the right thing if you provide the
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	371	* correct combination of casts.
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	372	*/
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	373
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	374	#ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	375	#define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT16) (const)))
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	376	#endif
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	377	#ifdef SHORTxLCONST_32 /* known to work with Microsoft C 6.0 */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	378	#define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT32) (const)))
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	379	#endif
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	380
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	381	#ifndef MULTIPLY16C16 /* default definition */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	382	#define MULTIPLY16C16(var,const) ((var) * (const))
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	383	#endif
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	384
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	385	/* Same except both inputs are variables. */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	386
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	387	#ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	388	#define MULTIPLY16V16(var1,var2) (((INT16) (var1)) * ((INT16) (var2)))
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	389	#endif
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	390
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	391	#ifndef MULTIPLY16V16 /* default definition */
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	392	#define MULTIPLY16V16(var1,var2) ((var1) * (var2))
1918ee327afb Revision: 200952 Alex Gilkes <alex.gilkes@nokia.com> parents: diff changeset	393	#endif

author	Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
	Tue, 06 Jul 2010 15:10:48 +0300
changeset 30	5dc02b23752f
parent 0	1918ee327afb
permissions	-rw-r--r--