huffyuv
[libav.git] / libavcodec / dsputil.h
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 */
19 #ifndef DSPUTIL_H
20 #define DSPUTIL_H
21
22 #include "common.h"
23 #include "avcodec.h"
24
25 //#define DEBUG
26 /* dct code */
27 typedef short DCTELEM;
28
29 void fdct_ifast (DCTELEM *data);
30 void ff_jpeg_fdct_islow (DCTELEM *data);
31
32 void j_rev_dct (DCTELEM *data);
33
34 void ff_fdct_mmx(DCTELEM *block);
35
36 /* encoding scans */
37 extern const UINT8 ff_alternate_horizontal_scan[64];
38 extern const UINT8 ff_alternate_vertical_scan[64];
39 extern const UINT8 ff_zigzag_direct[64];
40
41 /* pixel operations */
42 #define MAX_NEG_CROP 384
43
44 /* temporary */
45 extern UINT32 squareTbl[512];
46 extern UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
47
48
49 /* minimum alignment rules ;)
50 if u notice errors in the align stuff, need more alignment for some asm code for some cpu
51 or 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)
54 i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
55
56 !future video codecs might need functions with less strict alignment
57 */
58
59 /*
60 void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
61 void diff_pixels_c(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride);
62 void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
63 void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
64 void clear_blocks_c(DCTELEM *blocks);
65 */
66
67 /* add and put pixel (decoding) */
68 // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
69 typedef void (*op_pixels_func)(UINT8 *block/*align width (8 or 16)*/, const UINT8 *pixels/*align 1*/, int line_size, int h);
70 typedef void (*qpel_mc_func)(UINT8 *dst/*align width (8 or 16)*/, UINT8 *src/*align 1*/, int stride);
71
72
73
74 #define CALL_2X_PIXELS(a, b, n)\
75 static 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 }
79
80 /* motion estimation */
81
82 typedef int (*op_pixels_abs_func)(UINT8 *blk1/*align width (8 or 16)*/, UINT8 *blk2/*align 1*/, int line_size);
83 /*
84 int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx);
85 int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx);
86 int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx);
87 int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx);
88 */
89 typedef 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
121 /* huffyuv specific */
122 //FIXME note: alignment isnt guranteed currently but could be if needed
123 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
124 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 16*/,int w);
125 } DSPContext;
126
127 void dsputil_init(DSPContext* p, unsigned mask);
128
129 /**
130 * permute block according to permuatation.
131 * @param last last non zero element in scantable order
132 */
133 void ff_block_permute(INT16 *block, UINT8 *permutation, const UINT8 *scantable, int last);
134
135 #define emms_c()
136
137 #if defined(HAVE_MMX)
138
139 #undef emms_c
140
141 #define MM_MMX 0x0001 /* standard MMX */
142 #define MM_3DNOW 0x0004 /* AMD 3DNOW */
143 #define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
144 #define MM_SSE 0x0008 /* SSE functions */
145 #define MM_SSE2 0x0010 /* PIV SSE2 functions */
146
147 extern int mm_flags;
148
149 int mm_support(void);
150 void add_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size);
151 void put_pixels_clamped_mmx(const DCTELEM *block, UINT8 *pixels, int line_size);
152
153 static inline void emms(void)
154 {
155 __asm __volatile ("emms;":::"memory");
156 }
157
158 #define emms_c() \
159 {\
160 if (mm_flags & MM_MMX)\
161 emms();\
162 }
163
164 #define __align8 __attribute__ ((aligned (8)))
165
166 void dsputil_init_mmx(DSPContext* c, unsigned mask);
167 void dsputil_set_bit_exact_mmx(DSPContext* c, unsigned mask);
168
169 #elif defined(ARCH_ARMV4L)
170
171 /* This is to use 4 bytes read to the IDCT pointers for some 'zero'
172 line ptimizations */
173 #define __align8 __attribute__ ((aligned (4)))
174
175 void dsputil_init_armv4l(DSPContext* c, unsigned mask);
176
177 #elif defined(HAVE_MLIB)
178
179 /* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
180 #define __align8 __attribute__ ((aligned (8)))
181
182 void dsputil_init_mlib(DSPContext* c, unsigned mask);
183
184 #elif defined(ARCH_ALPHA)
185
186 #define __align8 __attribute__ ((aligned (8)))
187
188 void dsputil_init_alpha(DSPContext* c, unsigned mask);
189
190 #elif defined(ARCH_POWERPC)
191
192 #define __align8 __attribute__ ((aligned (16)))
193
194 void dsputil_init_ppc(DSPContext* c, unsigned mask);
195
196 #elif defined(HAVE_MMI)
197
198 #define __align8 __attribute__ ((aligned (16)))
199
200 void dsputil_init_mmi(DSPContext* c, unsigned mask);
201
202 #else
203
204 #define __align8
205
206 #endif
207
208 #ifdef __GNUC__
209
210 struct unaligned_64 { uint64_t l; } __attribute__((packed));
211 struct unaligned_32 { uint32_t l; } __attribute__((packed));
212
213 #define LD32(a) (((const struct unaligned_32 *) (a))->l)
214 #define LD64(a) (((const struct unaligned_64 *) (a))->l)
215
216 #define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
217
218 #else /* __GNUC__ */
219
220 #define LD32(a) (*((uint32_t*)(a)))
221 #define LD64(a) (*((uint64_t*)(a)))
222
223 #define ST32(a, b) *((uint32_t*)(a)) = (b)
224
225 #endif /* !__GNUC__ */
226
227 /* PSNR */
228 void get_psnr(UINT8 *orig_image[3], UINT8 *coded_image[3],
229 int orig_linesize[3], int coded_linesize,
230 AVCodecContext *avctx);
231
232 /* FFT computation */
233
234 /* NOTE: soon integer code will be added, so you must use the
235 FFTSample type */
236 typedef float FFTSample;
237
238 typedef struct FFTComplex {
239 FFTSample re, im;
240 } FFTComplex;
241
242 typedef struct FFTContext {
243 int nbits;
244 int inverse;
245 uint16_t *revtab;
246 FFTComplex *exptab;
247 FFTComplex *exptab1; /* only used by SSE code */
248 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
249 } FFTContext;
250
251 int fft_init(FFTContext *s, int nbits, int inverse);
252 void fft_permute(FFTContext *s, FFTComplex *z);
253 void fft_calc_c(FFTContext *s, FFTComplex *z);
254 void fft_calc_sse(FFTContext *s, FFTComplex *z);
255 static inline void fft_calc(FFTContext *s, FFTComplex *z)
256 {
257 s->fft_calc(s, z);
258 }
259 void fft_end(FFTContext *s);
260
261 /* MDCT computation */
262
263 typedef struct MDCTContext {
264 int n; /* size of MDCT (i.e. number of input data * 2) */
265 int nbits; /* n = 2^nbits */
266 /* pre/post rotation tables */
267 FFTSample *tcos;
268 FFTSample *tsin;
269 FFTContext fft;
270 } MDCTContext;
271
272 int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
273 void ff_imdct_calc(MDCTContext *s, FFTSample *output,
274 const FFTSample *input, FFTSample *tmp);
275 void ff_mdct_calc(MDCTContext *s, FFTSample *out,
276 const FFTSample *input, FFTSample *tmp);
277 void ff_mdct_end(MDCTContext *s);
278
279 #ifndef HAVE_LRINTF
280 /* XXX: add ISOC specific test to avoid specific BSD testing. */
281 /* better than nothing implementation. */
282 /* btw, rintf() is existing on fbsd too -- alex */
283 static inline long int lrintf(float x)
284 {
285 return (int)(rint(x));
286 }
287 #endif
288
289 #endif