* const warning fix
[libav.git] / libavcodec / dsputil.h
CommitLineData
ff4ec49e
FB
1/*
2 * DSP utils
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
de6d9b64
FB
19#ifndef DSPUTIL_H
20#define DSPUTIL_H
21
22#include "common.h"
43f1708f 23#include "avcodec.h"
de6d9b64 24
44eb4951 25//#define DEBUG
de6d9b64
FB
26/* dct code */
27typedef short DCTELEM;
28
03c94ede 29void fdct_ifast (DCTELEM *data);
28db7fce 30void ff_jpeg_fdct_islow (DCTELEM *data);
de6d9b64
FB
31
32void j_rev_dct (DCTELEM *data);
33
3f09f52a 34void ff_fdct_mmx(DCTELEM *block);
de6d9b64 35
e0eac44e 36/* encoding scans */
2ad1516a
MN
37extern const UINT8 ff_alternate_horizontal_scan[64];
38extern const UINT8 ff_alternate_vertical_scan[64];
39extern const UINT8 ff_zigzag_direct[64];
5a240838 40
de6d9b64
FB
41/* pixel operations */
42#define MAX_NEG_CROP 384
43
44/* temporary */
45extern UINT32 squareTbl[512];
0cfa9713 46extern UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
de6d9b64 47
de6d9b64 48
b7c27ee6 49/* minimum alignment rules ;)
eb4b3dd3 50if u notice errors in the align stuff, need more alignment for some asm code for some cpu
b7c27ee6
MN
51or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
52
53!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
54i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
de6d9b64 55
b7c27ee6
MN
56!future video codecs might need functions with less strict alignment
57*/
58
eb4b3dd3 59/*
de6d9b64 60void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
9dbcbd92 61void diff_pixels_c(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride);
de6d9b64
FB
62void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
63void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
649c00c9 64void clear_blocks_c(DCTELEM *blocks);
eb4b3dd3 65*/
de6d9b64
FB
66
67/* add and put pixel (decoding) */
b7c27ee6
MN
68// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
69typedef void (*op_pixels_func)(UINT8 *block/*align width (8 or 16)*/, const UINT8 *pixels/*align 1*/, int line_size, int h);
70typedef void (*qpel_mc_func)(UINT8 *dst/*align width (8 or 16)*/, UINT8 *src/*align 1*/, int stride);
b3184779 71
eb4b3dd3 72
b3184779
MN
73
74#define CALL_2X_PIXELS(a, b, n)\
75static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
76 b(block , pixels , line_size, h);\
77 b(block+n, pixels+n, line_size, h);\
78}
44eb4951 79
de6d9b64
FB
80/* motion estimation */
81
b7c27ee6 82typedef int (*op_pixels_abs_func)(UINT8 *blk1/*align width (8 or 16)*/, UINT8 *blk2/*align 1*/, int line_size);
eb4b3dd3 83/*
ba6802de
MN
84int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx);
85int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx);
86int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx);
87int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx);
eb4b3dd3
ZK
88*/
89typedef struct DSPContext {
90 /* pixel ops : interface with DCT */
91 void (*get_pixels)(DCTELEM *block/*align 16*/, const UINT8 *pixels/*align 8*/, int line_size);
92 void (*diff_pixels)(DCTELEM *block/*align 16*/, const UINT8 *s1/*align 8*/, const UINT8 *s2/*align 8*/, int stride);
93 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
94 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
95 void (*gmc1)(UINT8 *dst/*align 8*/, UINT8 *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
96 void (*gmc )(UINT8 *dst/*align 8*/, UINT8 *src/*align 1*/, int stride, int h, int ox, int oy,
97 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
98 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
99 int (*pix_sum)(UINT8 * pix, int line_size);
100 int (*pix_norm1)(UINT8 * pix, int line_size);
101
102 /* maybe create an array for 16/8 functions */
103 op_pixels_func put_pixels_tab[2][4];
104 op_pixels_func avg_pixels_tab[2][4];
105 op_pixels_func put_no_rnd_pixels_tab[2][4];
106 op_pixels_func avg_no_rnd_pixels_tab[2][4];
107 qpel_mc_func put_qpel_pixels_tab[2][16];
108 qpel_mc_func avg_qpel_pixels_tab[2][16];
109 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
110 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
111
112 op_pixels_abs_func pix_abs16x16;
113 op_pixels_abs_func pix_abs16x16_x2;
114 op_pixels_abs_func pix_abs16x16_y2;
115 op_pixels_abs_func pix_abs16x16_xy2;
116 op_pixels_abs_func pix_abs8x8;
117 op_pixels_abs_func pix_abs8x8_x2;
118 op_pixels_abs_func pix_abs8x8_y2;
119 op_pixels_abs_func pix_abs8x8_xy2;
120} DSPContext;
121
122void dsputil_init(DSPContext* p, unsigned mask);
de6d9b64 123
7801d21d
MN
124/**
125 * permute block according to permuatation.
126 * @param last last non zero element in scantable order
127 */
128void ff_block_permute(INT16 *block, UINT8 *permutation, const UINT8 *scantable, int last);
e0eac44e 129
eb4b3dd3
ZK
130#define emms_c()
131
3d03c0a2 132#if defined(HAVE_MMX)
de6d9b64 133
18f77016 134#undef emms_c
eb4b3dd3 135
de6d9b64
FB
136#define MM_MMX 0x0001 /* standard MMX */
137#define MM_3DNOW 0x0004 /* AMD 3DNOW */
138#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
139#define MM_SSE 0x0008 /* SSE functions */
140#define MM_SSE2 0x0010 /* PIV SSE2 functions */
141
142extern int mm_flags;
143
144int mm_support(void);
eb4b3dd3
ZK
145void add_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size);
146void put_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size);
de6d9b64
FB
147
148static inline void emms(void)
149{
fb16b7e7
FB
150 __asm __volatile ("emms;":::"memory");
151}
152
153#define emms_c() \
154{\
155 if (mm_flags & MM_MMX)\
156 emms();\
de6d9b64
FB
157}
158
159#define __align8 __attribute__ ((aligned (8)))
160
eb4b3dd3
ZK
161void dsputil_init_mmx(DSPContext* c, unsigned mask);
162void dsputil_set_bit_exact_mmx(DSPContext* c, unsigned mask);
de6d9b64 163
3d03c0a2
FB
164#elif defined(ARCH_ARMV4L)
165
3d03c0a2
FB
166/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
167 line ptimizations */
168#define __align8 __attribute__ ((aligned (4)))
169
eb4b3dd3 170void dsputil_init_armv4l(DSPContext* c, unsigned mask);
3d03c0a2 171
c34270f5 172#elif defined(HAVE_MLIB)
c34270f5
FB
173
174/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
175#define __align8 __attribute__ ((aligned (8)))
176
eb4b3dd3 177void dsputil_init_mlib(DSPContext* c, unsigned mask);
c34270f5 178
1e98dffb
NK
179#elif defined(ARCH_ALPHA)
180
1e98dffb
NK
181#define __align8 __attribute__ ((aligned (8)))
182
eb4b3dd3 183void dsputil_init_alpha(DSPContext* c, unsigned mask);
1e98dffb 184
59925ef2
BF
185#elif defined(ARCH_POWERPC)
186
59925ef2
BF
187#define __align8 __attribute__ ((aligned (16)))
188
eb4b3dd3 189void dsputil_init_ppc(DSPContext* c, unsigned mask);
59925ef2 190
d46aba26
LS
191#elif defined(HAVE_MMI)
192
d46aba26
LS
193#define __align8 __attribute__ ((aligned (16)))
194
eb4b3dd3 195void dsputil_init_mmi(DSPContext* c, unsigned mask);
d46aba26 196
de6d9b64
FB
197#else
198
199#define __align8
200
201#endif
202
6d4985bb
FB
203#ifdef __GNUC__
204
205struct unaligned_64 { uint64_t l; } __attribute__((packed));
206struct unaligned_32 { uint32_t l; } __attribute__((packed));
207
208#define LD32(a) (((const struct unaligned_32 *) (a))->l)
209#define LD64(a) (((const struct unaligned_64 *) (a))->l)
210
211#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
212
213#else /* __GNUC__ */
214
215#define LD32(a) (*((uint32_t*)(a)))
216#define LD64(a) (*((uint64_t*)(a)))
217
218#define ST32(a, b) *((uint32_t*)(a)) = (b)
219
220#endif /* !__GNUC__ */
221
43f1708f
J
222/* PSNR */
223void get_psnr(UINT8 *orig_image[3], UINT8 *coded_image[3],
224 int orig_linesize[3], int coded_linesize,
225 AVCodecContext *avctx);
bb6f5690
FB
226
227/* FFT computation */
228
229/* NOTE: soon integer code will be added, so you must use the
230 FFTSample type */
231typedef float FFTSample;
232
233typedef struct FFTComplex {
234 FFTSample re, im;
235} FFTComplex;
236
237typedef struct FFTContext {
238 int nbits;
239 int inverse;
240 uint16_t *revtab;
241 FFTComplex *exptab;
242 FFTComplex *exptab1; /* only used by SSE code */
243 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
244} FFTContext;
245
246int fft_init(FFTContext *s, int nbits, int inverse);
247void fft_permute(FFTContext *s, FFTComplex *z);
248void fft_calc_c(FFTContext *s, FFTComplex *z);
249void fft_calc_sse(FFTContext *s, FFTComplex *z);
250static inline void fft_calc(FFTContext *s, FFTComplex *z)
251{
252 s->fft_calc(s, z);
253}
254void fft_end(FFTContext *s);
255
256/* MDCT computation */
257
258typedef struct MDCTContext {
259 int n; /* size of MDCT (i.e. number of input data * 2) */
260 int nbits; /* n = 2^nbits */
261 /* pre/post rotation tables */
262 FFTSample *tcos;
263 FFTSample *tsin;
264 FFTContext fft;
265} MDCTContext;
266
82696bee 267int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
eb4b3dd3 268void ff_imdct_calc(MDCTContext *s, FFTSample *output,
bb6f5690 269 const FFTSample *input, FFTSample *tmp);
eb4b3dd3 270void ff_mdct_calc(MDCTContext *s, FFTSample *out,
bb6f5690 271 const FFTSample *input, FFTSample *tmp);
82696bee 272void ff_mdct_end(MDCTContext *s);
bb6f5690 273
95e2ce4a 274#ifndef HAVE_LRINTF
9d85cbd9
FB
275/* XXX: add ISOC specific test to avoid specific BSD testing. */
276/* better than nothing implementation. */
6234d753 277/* btw, rintf() is existing on fbsd too -- alex */
9d85cbd9
FB
278static inline long int lrintf(float x)
279{
280 return (int)(rint(x));
281}
282#endif
283
de6d9b64 284#endif