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[libav.git] / libavcodec / dsputil.h
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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 */
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19
20/**
21 * @file dsputil.h
983e3246 22 * DSP utils.
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23 * note, many functions in here may use MMX which trashes the FPU state, it is
24 * absolutely necessary to call emms_c() between dsp & float/double code
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25 */
26
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27#ifndef DSPUTIL_H
28#define DSPUTIL_H
29
30#include "common.h"
43f1708f 31#include "avcodec.h"
de6d9b64 32
24641185 33
44eb4951 34//#define DEBUG
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35/* dct code */
36typedef short DCTELEM;
37
03c94ede 38void fdct_ifast (DCTELEM *data);
48b1f800 39void fdct_ifast248 (DCTELEM *data);
28db7fce 40void ff_jpeg_fdct_islow (DCTELEM *data);
10acc479 41void ff_fdct248_islow (DCTELEM *data);
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42
43void j_rev_dct (DCTELEM *data);
44
3f09f52a 45void ff_fdct_mmx(DCTELEM *block);
cf3bf5bb 46void ff_fdct_mmx2(DCTELEM *block);
de6d9b64 47
e0eac44e 48/* encoding scans */
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49extern const uint8_t ff_alternate_horizontal_scan[64];
50extern const uint8_t ff_alternate_vertical_scan[64];
51extern const uint8_t ff_zigzag_direct[64];
10acc479 52extern const uint8_t ff_zigzag248_direct[64];
5a240838 53
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54/* pixel operations */
55#define MAX_NEG_CROP 384
56
57/* temporary */
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58extern uint32_t squareTbl[512];
59extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
de6d9b64 60
de6d9b64 61
b7c27ee6 62/* minimum alignment rules ;)
eb4b3dd3 63if u notice errors in the align stuff, need more alignment for some asm code for some cpu
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64or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
65
66!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
67i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
de6d9b64 68
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69!future video codecs might need functions with less strict alignment
70*/
71
eb4b3dd3 72/*
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73void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
74void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
75void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
76void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
649c00c9 77void clear_blocks_c(DCTELEM *blocks);
eb4b3dd3 78*/
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79
80/* add and put pixel (decoding) */
b7c27ee6 81// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
0c1a9eda 82typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
669ac79c 83typedef void (*tpel_mc_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int w, int h);
0c1a9eda 84typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
0da71265 85typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
b3184779 86
db794953 87#define DEF_OLD_QPEL(name)\
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88void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
89void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
90void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
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91
92DEF_OLD_QPEL(qpel16_mc11_old_c)
93DEF_OLD_QPEL(qpel16_mc31_old_c)
94DEF_OLD_QPEL(qpel16_mc12_old_c)
95DEF_OLD_QPEL(qpel16_mc32_old_c)
96DEF_OLD_QPEL(qpel16_mc13_old_c)
97DEF_OLD_QPEL(qpel16_mc33_old_c)
98DEF_OLD_QPEL(qpel8_mc11_old_c)
99DEF_OLD_QPEL(qpel8_mc31_old_c)
100DEF_OLD_QPEL(qpel8_mc12_old_c)
101DEF_OLD_QPEL(qpel8_mc32_old_c)
102DEF_OLD_QPEL(qpel8_mc13_old_c)
103DEF_OLD_QPEL(qpel8_mc33_old_c)
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104
105#define CALL_2X_PIXELS(a, b, n)\
106static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
107 b(block , pixels , line_size, h);\
108 b(block+n, pixels+n, line_size, h);\
109}
44eb4951 110
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111/* motion estimation */
112
0c1a9eda 113typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
1457ab52 114
0c1a9eda 115typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
1457ab52 116
0da71265 117
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118/**
119 * DSPContext.
120 */
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121typedef struct DSPContext {
122 /* pixel ops : interface with DCT */
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123 void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
124 void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
125 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
126 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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127 /**
128 * translational global motion compensation.
129 */
0c1a9eda 130 void (*gmc1)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
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131 /**
132 * global motion compensation.
133 */
0c1a9eda 134 void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
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135 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
136 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
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137 int (*pix_sum)(uint8_t * pix, int line_size);
138 int (*pix_norm1)(uint8_t * pix, int line_size);
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139 me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */
140 me_cmp_func sse[2];
141 me_cmp_func hadamard8_diff[2];
142 me_cmp_func dct_sad[2];
143 me_cmp_func quant_psnr[2];
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144 me_cmp_func bit[2];
145 me_cmp_func rd[2];
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146 int (*hadamard8_abs )(uint8_t *src, int stride, int mean);
147
826f429a 148 me_cmp_func me_pre_cmp[11];
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149 me_cmp_func me_cmp[11];
150 me_cmp_func me_sub_cmp[11];
151 me_cmp_func mb_cmp[11];
eb4b3dd3 152
669ac79c 153 /* maybe create an array for 16/8/4/2 functions */
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154 /**
155 * Halfpel motion compensation with rounding (a+b+1)>>1.
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156 * this is an array[4][4] of motion compensation funcions for 4
157 * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
5755c27f 158 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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159 * @param block destination where the result is stored
160 * @param pixels source
161 * @param line_size number of bytes in a horizontal line of block
162 * @param h height
163 */
669ac79c 164 op_pixels_func put_pixels_tab[4][4];
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165
166 /**
167 * Halfpel motion compensation with rounding (a+b+1)>>1.
4e8eed2f 168 * This is an array[4][4] of motion compensation functions for 4
da3b9756 169 * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
5755c27f 170 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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171 * @param block destination into which the result is averaged (a+b+1)>>1
172 * @param pixels source
173 * @param line_size number of bytes in a horizontal line of block
174 * @param h height
175 */
da3b9756 176 op_pixels_func avg_pixels_tab[4][4];
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177
178 /**
179 * Halfpel motion compensation with no rounding (a+b)>>1.
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180 * this is an array[2][4] of motion compensation funcions for 2
181 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
5755c27f 182 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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183 * @param block destination where the result is stored
184 * @param pixels source
185 * @param line_size number of bytes in a horizontal line of block
186 * @param h height
187 */
eb4b3dd3 188 op_pixels_func put_no_rnd_pixels_tab[2][4];
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189
190 /**
191 * Halfpel motion compensation with no rounding (a+b)>>1.
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192 * this is an array[2][4] of motion compensation funcions for 2
193 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
5755c27f 194 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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195 * @param block destination into which the result is averaged (a+b)>>1
196 * @param pixels source
197 * @param line_size number of bytes in a horizontal line of block
198 * @param h height
199 */
eb4b3dd3 200 op_pixels_func avg_no_rnd_pixels_tab[2][4];
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201
202 /**
203 * Thirdpel motion compensation with rounding (a+b+1)>>1.
204 * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>
205 * *pixels_tab[ xthirdpel + 4*ythirdpel ]
206 * @param block destination where the result is stored
207 * @param pixels source
208 * @param line_size number of bytes in a horizontal line of block
209 * @param h height
210 */
211 tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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212 tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
213
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214 qpel_mc_func put_qpel_pixels_tab[2][16];
215 qpel_mc_func avg_qpel_pixels_tab[2][16];
216 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
217 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
1457ab52 218 qpel_mc_func put_mspel_pixels_tab[8];
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219
220 /**
221 * h264 Chram MC
222 */
223 h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
224 h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
eb4b3dd3 225
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226 qpel_mc_func put_h264_qpel_pixels_tab[3][16];
227 qpel_mc_func avg_h264_qpel_pixels_tab[3][16];
228
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229 op_pixels_abs_func pix_abs16x16;
230 op_pixels_abs_func pix_abs16x16_x2;
231 op_pixels_abs_func pix_abs16x16_y2;
232 op_pixels_abs_func pix_abs16x16_xy2;
233 op_pixels_abs_func pix_abs8x8;
234 op_pixels_abs_func pix_abs8x8_x2;
235 op_pixels_abs_func pix_abs8x8_y2;
236 op_pixels_abs_func pix_abs8x8_xy2;
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237
238 /* huffyuv specific */
11f18faf 239 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
1457ab52 240 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
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241 /**
242 * subtract huffyuv's variant of median prediction
243 * note, this might read from src1[-1], src2[-1]
244 */
245 void (*sub_hfyu_median_prediction)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top);
3d2e8cce 246 void (*bswap_buf)(uint32_t *dst, uint32_t *src, int w);
b0368839 247
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248 void (*h263_v_loop_filter)(uint8_t *src, int stride, int qscale);
249 void (*h263_h_loop_filter)(uint8_t *src, int stride, int qscale);
250
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251 /* (I)DCT */
252 void (*fdct)(DCTELEM *block/* align 16*/);
10acc479 253 void (*fdct248)(DCTELEM *block/* align 16*/);
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254
255 /* IDCT really*/
256 void (*idct)(DCTELEM *block/* align 16*/);
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257
258 /**
77c92c2d 259 * block -> idct -> clip to unsigned 8 bit -> dest.
24641185 260 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
a1adf436 261 * @param line_size size in bytes of a horizotal line of dest
24641185 262 */
b0368839 263 void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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264
265 /**
266 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
a1adf436 267 * @param line_size size in bytes of a horizotal line of dest
24641185 268 */
b0368839 269 void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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270
271 /**
77c92c2d 272 * idct input permutation.
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273 * several optimized IDCTs need a permutated input (relative to the normal order of the reference
274 * IDCT)
275 * this permutation must be performed before the idct_put/add, note, normally this can be merged
276 * with the zigzag/alternate scan<br>
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277 * an example to avoid confusion:
278 * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
279 * - (x -> referece dct -> reference idct -> x)
280 * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
281 * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
282 */
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283 uint8_t idct_permutation[64];
284 int idct_permutation_type;
285#define FF_NO_IDCT_PERM 1
286#define FF_LIBMPEG2_IDCT_PERM 2
287#define FF_SIMPLE_IDCT_PERM 3
288#define FF_TRANSPOSE_IDCT_PERM 4
289
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290} DSPContext;
291
59cf08ce 292void dsputil_static_init(void);
b0368839 293void dsputil_init(DSPContext* p, AVCodecContext *avctx);
de6d9b64 294
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295/**
296 * permute block according to permuatation.
297 * @param last last non zero element in scantable order
298 */
0c1a9eda 299void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
e0eac44e 300
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301#define BYTE_VEC32(c) ((c)*0x01010101UL)
302
303static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
304{
305 return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
306}
307
308static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
309{
310 return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
311}
312
24641185 313/**
77c92c2d 314 * Empty mmx state.
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315 * this must be called between any dsp function and float/double code.
316 * for example sin(); dsp->idct_put(); emms_c(); cos()
317 */
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318#define emms_c()
319
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320/* should be defined by architectures supporting
321 one or more MultiMedia extension */
322int mm_support(void);
323
3d03c0a2 324#if defined(HAVE_MMX)
de6d9b64 325
18f77016 326#undef emms_c
eb4b3dd3 327
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328#define MM_MMX 0x0001 /* standard MMX */
329#define MM_3DNOW 0x0004 /* AMD 3DNOW */
330#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
331#define MM_SSE 0x0008 /* SSE functions */
332#define MM_SSE2 0x0010 /* PIV SSE2 functions */
333
334extern int mm_flags;
335
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336void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
337void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
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338
339static inline void emms(void)
340{
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341 __asm __volatile ("emms;":::"memory");
342}
343
1457ab52 344
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345#define emms_c() \
346{\
347 if (mm_flags & MM_MMX)\
348 emms();\
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349}
350
351#define __align8 __attribute__ ((aligned (8)))
352
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353void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
354void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
2720569a 355
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356#elif defined(ARCH_ARMV4L)
357
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358/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
359 line ptimizations */
360#define __align8 __attribute__ ((aligned (4)))
361
b0368839 362void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
3d03c0a2 363
c34270f5 364#elif defined(HAVE_MLIB)
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365
366/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
367#define __align8 __attribute__ ((aligned (8)))
368
b0368839 369void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
c34270f5 370
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371#elif defined(ARCH_ALPHA)
372
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373#define __align8 __attribute__ ((aligned (8)))
374
b0368839 375void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
1e98dffb 376
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377#elif defined(ARCH_POWERPC)
378
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379#define MM_ALTIVEC 0x0001 /* standard AltiVec */
380
381extern int mm_flags;
382
3b991c54 383#if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
9a197a24 384#define pixel altivec_pixel
3b991c54 385#include <altivec.h>
9a197a24 386#undef pixel
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387#endif
388
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389#define __align8 __attribute__ ((aligned (16)))
390
b0368839 391void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
59925ef2 392
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393#elif defined(HAVE_MMI)
394
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395#define __align8 __attribute__ ((aligned (16)))
396
b0368839 397void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
d46aba26 398
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399#elif defined(ARCH_SH4)
400
401#define __align8 __attribute__ ((aligned (8)))
402
403void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
404
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405#else
406
407#define __align8
408
409#endif
410
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411#ifdef __GNUC__
412
413struct unaligned_64 { uint64_t l; } __attribute__((packed));
414struct unaligned_32 { uint32_t l; } __attribute__((packed));
669ac79c 415struct unaligned_16 { uint16_t l; } __attribute__((packed));
6d4985bb 416
669ac79c 417#define LD16(a) (((const struct unaligned_16 *) (a))->l)
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418#define LD32(a) (((const struct unaligned_32 *) (a))->l)
419#define LD64(a) (((const struct unaligned_64 *) (a))->l)
420
421#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
422
423#else /* __GNUC__ */
424
669ac79c 425#define LD16(a) (*((uint16_t*)(a)))
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426#define LD32(a) (*((uint32_t*)(a)))
427#define LD64(a) (*((uint64_t*)(a)))
428
429#define ST32(a, b) *((uint32_t*)(a)) = (b)
430
431#endif /* !__GNUC__ */
432
43f1708f 433/* PSNR */
0c1a9eda 434void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
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435 int orig_linesize[3], int coded_linesize,
436 AVCodecContext *avctx);
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437
438/* FFT computation */
439
440/* NOTE: soon integer code will be added, so you must use the
441 FFTSample type */
442typedef float FFTSample;
443
444typedef struct FFTComplex {
445 FFTSample re, im;
446} FFTComplex;
447
448typedef struct FFTContext {
449 int nbits;
450 int inverse;
451 uint16_t *revtab;
452 FFTComplex *exptab;
453 FFTComplex *exptab1; /* only used by SSE code */
454 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
455} FFTContext;
456
457int fft_init(FFTContext *s, int nbits, int inverse);
458void fft_permute(FFTContext *s, FFTComplex *z);
459void fft_calc_c(FFTContext *s, FFTComplex *z);
460void fft_calc_sse(FFTContext *s, FFTComplex *z);
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461void fft_calc_altivec(FFTContext *s, FFTComplex *z);
462
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463static inline void fft_calc(FFTContext *s, FFTComplex *z)
464{
465 s->fft_calc(s, z);
466}
467void fft_end(FFTContext *s);
468
469/* MDCT computation */
470
471typedef struct MDCTContext {
472 int n; /* size of MDCT (i.e. number of input data * 2) */
473 int nbits; /* n = 2^nbits */
474 /* pre/post rotation tables */
475 FFTSample *tcos;
476 FFTSample *tsin;
477 FFTContext fft;
478} MDCTContext;
479
82696bee 480int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
eb4b3dd3 481void ff_imdct_calc(MDCTContext *s, FFTSample *output,
bb6f5690 482 const FFTSample *input, FFTSample *tmp);
eb4b3dd3 483void ff_mdct_calc(MDCTContext *s, FFTSample *out,
bb6f5690 484 const FFTSample *input, FFTSample *tmp);
82696bee 485void ff_mdct_end(MDCTContext *s);
bb6f5690 486
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487#define WARPER88_1616(name8, name16)\
488static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\
489 return name8(s, dst , src , stride)\
490 +name8(s, dst+8 , src+8 , stride)\
491 +name8(s, dst +8*stride, src +8*stride, stride)\
492 +name8(s, dst+8+8*stride, src+8+8*stride, stride);\
493}
494
95e2ce4a 495#ifndef HAVE_LRINTF
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496/* XXX: add ISOC specific test to avoid specific BSD testing. */
497/* better than nothing implementation. */
6234d753 498/* btw, rintf() is existing on fbsd too -- alex */
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499static inline long int lrintf(float x)
500{
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501#ifdef CONFIG_WIN32
502 /* XXX: incorrect, but make it compile */
503 return (int)(x);
504#else
9d85cbd9 505 return (int)(rint(x));
ea937d01 506#endif
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507}
508#endif
509
de6d9b64 510#endif