fixing concealment MVs prediction
[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;
0e15384d 37//typedef int DCTELEM;
de6d9b64 38
03c94ede 39void fdct_ifast (DCTELEM *data);
28db7fce 40void ff_jpeg_fdct_islow (DCTELEM *data);
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41
42void j_rev_dct (DCTELEM *data);
43
3f09f52a 44void ff_fdct_mmx(DCTELEM *block);
de6d9b64 45
e0eac44e 46/* encoding scans */
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47extern const uint8_t ff_alternate_horizontal_scan[64];
48extern const uint8_t ff_alternate_vertical_scan[64];
49extern const uint8_t ff_zigzag_direct[64];
5a240838 50
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51/* pixel operations */
52#define MAX_NEG_CROP 384
53
54/* temporary */
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55extern uint32_t squareTbl[512];
56extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
de6d9b64 57
de6d9b64 58
b7c27ee6 59/* minimum alignment rules ;)
eb4b3dd3 60if u notice errors in the align stuff, need more alignment for some asm code for some cpu
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61or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
62
63!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
64i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
de6d9b64 65
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66!future video codecs might need functions with less strict alignment
67*/
68
eb4b3dd3 69/*
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70void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
71void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
72void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
73void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
649c00c9 74void clear_blocks_c(DCTELEM *blocks);
eb4b3dd3 75*/
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76
77/* add and put pixel (decoding) */
b7c27ee6 78// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
0c1a9eda 79typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
669ac79c 80typedef 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 81typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
0da71265 82typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
b3184779 83
db794953 84#define DEF_OLD_QPEL(name)\
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85void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
86void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
87void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
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88
89DEF_OLD_QPEL(qpel16_mc11_old_c)
90DEF_OLD_QPEL(qpel16_mc31_old_c)
91DEF_OLD_QPEL(qpel16_mc12_old_c)
92DEF_OLD_QPEL(qpel16_mc32_old_c)
93DEF_OLD_QPEL(qpel16_mc13_old_c)
94DEF_OLD_QPEL(qpel16_mc33_old_c)
95DEF_OLD_QPEL(qpel8_mc11_old_c)
96DEF_OLD_QPEL(qpel8_mc31_old_c)
97DEF_OLD_QPEL(qpel8_mc12_old_c)
98DEF_OLD_QPEL(qpel8_mc32_old_c)
99DEF_OLD_QPEL(qpel8_mc13_old_c)
100DEF_OLD_QPEL(qpel8_mc33_old_c)
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101
102#define CALL_2X_PIXELS(a, b, n)\
103static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
104 b(block , pixels , line_size, h);\
105 b(block+n, pixels+n, line_size, h);\
106}
44eb4951 107
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108/* motion estimation */
109
0c1a9eda 110typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
1457ab52 111
0c1a9eda 112typedef 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 113
0da71265 114
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115/**
116 * DSPContext.
117 */
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118typedef struct DSPContext {
119 /* pixel ops : interface with DCT */
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120 void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
121 void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
122 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
123 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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124 /**
125 * translational global motion compensation.
126 */
0c1a9eda 127 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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128 /**
129 * global motion compensation.
130 */
0c1a9eda 131 void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
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132 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
133 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
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134 int (*pix_sum)(uint8_t * pix, int line_size);
135 int (*pix_norm1)(uint8_t * pix, int line_size);
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136 me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */
137 me_cmp_func sse[2];
138 me_cmp_func hadamard8_diff[2];
139 me_cmp_func dct_sad[2];
140 me_cmp_func quant_psnr[2];
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141 me_cmp_func bit[2];
142 me_cmp_func rd[2];
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143 int (*hadamard8_abs )(uint8_t *src, int stride, int mean);
144
826f429a 145 me_cmp_func me_pre_cmp[11];
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146 me_cmp_func me_cmp[11];
147 me_cmp_func me_sub_cmp[11];
148 me_cmp_func mb_cmp[11];
eb4b3dd3 149
669ac79c 150 /* maybe create an array for 16/8/4/2 functions */
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151 /**
152 * Halfpel motion compensation with rounding (a+b+1)>>1.
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153 * this is an array[4][4] of motion compensation funcions for 4
154 * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
5755c27f 155 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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156 * @param block destination where the result is stored
157 * @param pixels source
158 * @param line_size number of bytes in a horizontal line of block
159 * @param h height
160 */
669ac79c 161 op_pixels_func put_pixels_tab[4][4];
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162
163 /**
164 * Halfpel motion compensation with rounding (a+b+1)>>1.
4e8eed2f 165 * This is an array[4][4] of motion compensation functions for 4
da3b9756 166 * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
5755c27f 167 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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168 * @param block destination into which the result is averaged (a+b+1)>>1
169 * @param pixels source
170 * @param line_size number of bytes in a horizontal line of block
171 * @param h height
172 */
da3b9756 173 op_pixels_func avg_pixels_tab[4][4];
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174
175 /**
176 * Halfpel motion compensation with no rounding (a+b)>>1.
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177 * this is an array[2][4] of motion compensation funcions for 2
178 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
5755c27f 179 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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180 * @param block destination where the result is stored
181 * @param pixels source
182 * @param line_size number of bytes in a horizontal line of block
183 * @param h height
184 */
eb4b3dd3 185 op_pixels_func put_no_rnd_pixels_tab[2][4];
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186
187 /**
188 * Halfpel motion compensation with no rounding (a+b)>>1.
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189 * this is an array[2][4] of motion compensation funcions for 2
190 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
5755c27f 191 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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192 * @param block destination into which the result is averaged (a+b)>>1
193 * @param pixels source
194 * @param line_size number of bytes in a horizontal line of block
195 * @param h height
196 */
eb4b3dd3 197 op_pixels_func avg_no_rnd_pixels_tab[2][4];
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198
199 /**
200 * Thirdpel motion compensation with rounding (a+b+1)>>1.
201 * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>
202 * *pixels_tab[ xthirdpel + 4*ythirdpel ]
203 * @param block destination where the result is stored
204 * @param pixels source
205 * @param line_size number of bytes in a horizontal line of block
206 * @param h height
207 */
208 tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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209 tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
210
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211 qpel_mc_func put_qpel_pixels_tab[2][16];
212 qpel_mc_func avg_qpel_pixels_tab[2][16];
213 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
214 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
1457ab52 215 qpel_mc_func put_mspel_pixels_tab[8];
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216
217 /**
218 * h264 Chram MC
219 */
220 h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
221 h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
eb4b3dd3 222
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223 qpel_mc_func put_h264_qpel_pixels_tab[3][16];
224 qpel_mc_func avg_h264_qpel_pixels_tab[3][16];
225
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226 op_pixels_abs_func pix_abs16x16;
227 op_pixels_abs_func pix_abs16x16_x2;
228 op_pixels_abs_func pix_abs16x16_y2;
229 op_pixels_abs_func pix_abs16x16_xy2;
230 op_pixels_abs_func pix_abs8x8;
231 op_pixels_abs_func pix_abs8x8_x2;
232 op_pixels_abs_func pix_abs8x8_y2;
233 op_pixels_abs_func pix_abs8x8_xy2;
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234
235 /* huffyuv specific */
11f18faf 236 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
1457ab52 237 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
3d2e8cce 238 void (*bswap_buf)(uint32_t *dst, uint32_t *src, int w);
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239
240 /* (I)DCT */
241 void (*fdct)(DCTELEM *block/* align 16*/);
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242
243 /**
77c92c2d 244 * block -> idct -> clip to unsigned 8 bit -> dest.
24641185 245 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
a1adf436 246 * @param line_size size in bytes of a horizotal line of dest
24641185 247 */
b0368839 248 void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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249
250 /**
251 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
a1adf436 252 * @param line_size size in bytes of a horizotal line of dest
24641185 253 */
b0368839 254 void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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255
256 /**
77c92c2d 257 * idct input permutation.
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258 * several optimized IDCTs need a permutated input (relative to the normal order of the reference
259 * IDCT)
260 * this permutation must be performed before the idct_put/add, note, normally this can be merged
261 * with the zigzag/alternate scan<br>
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262 * an example to avoid confusion:
263 * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
264 * - (x -> referece dct -> reference idct -> x)
265 * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
266 * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
267 */
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268 uint8_t idct_permutation[64];
269 int idct_permutation_type;
270#define FF_NO_IDCT_PERM 1
271#define FF_LIBMPEG2_IDCT_PERM 2
272#define FF_SIMPLE_IDCT_PERM 3
273#define FF_TRANSPOSE_IDCT_PERM 4
274
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275} DSPContext;
276
59cf08ce 277void dsputil_static_init(void);
b0368839 278void dsputil_init(DSPContext* p, AVCodecContext *avctx);
de6d9b64 279
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280/**
281 * permute block according to permuatation.
282 * @param last last non zero element in scantable order
283 */
0c1a9eda 284void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
e0eac44e 285
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286#define BYTE_VEC32(c) ((c)*0x01010101UL)
287
288static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
289{
290 return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
291}
292
293static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
294{
295 return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
296}
297
24641185 298/**
77c92c2d 299 * Empty mmx state.
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300 * this must be called between any dsp function and float/double code.
301 * for example sin(); dsp->idct_put(); emms_c(); cos()
302 */
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303#define emms_c()
304
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305/* should be defined by architectures supporting
306 one or more MultiMedia extension */
307int mm_support(void);
308
3d03c0a2 309#if defined(HAVE_MMX)
de6d9b64 310
18f77016 311#undef emms_c
eb4b3dd3 312
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313#define MM_MMX 0x0001 /* standard MMX */
314#define MM_3DNOW 0x0004 /* AMD 3DNOW */
315#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
316#define MM_SSE 0x0008 /* SSE functions */
317#define MM_SSE2 0x0010 /* PIV SSE2 functions */
318
319extern int mm_flags;
320
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321void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
322void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
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323
324static inline void emms(void)
325{
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326 __asm __volatile ("emms;":::"memory");
327}
328
1457ab52 329
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330#define emms_c() \
331{\
332 if (mm_flags & MM_MMX)\
333 emms();\
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334}
335
336#define __align8 __attribute__ ((aligned (8)))
337
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338void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
339void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
2720569a 340
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341#elif defined(ARCH_ARMV4L)
342
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343/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
344 line ptimizations */
345#define __align8 __attribute__ ((aligned (4)))
346
b0368839 347void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
3d03c0a2 348
c34270f5 349#elif defined(HAVE_MLIB)
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350
351/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
352#define __align8 __attribute__ ((aligned (8)))
353
b0368839 354void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
c34270f5 355
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356#elif defined(ARCH_ALPHA)
357
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358#define __align8 __attribute__ ((aligned (8)))
359
b0368839 360void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
1e98dffb 361
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362#elif defined(ARCH_POWERPC)
363
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364#define MM_ALTIVEC 0x0001 /* standard AltiVec */
365
366extern int mm_flags;
367
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368#if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
369#include <altivec.h>
370#endif
371
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372#define __align8 __attribute__ ((aligned (16)))
373
b0368839 374void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
59925ef2 375
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376#elif defined(HAVE_MMI)
377
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378#define __align8 __attribute__ ((aligned (16)))
379
b0368839 380void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
d46aba26 381
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382#elif defined(ARCH_SH4)
383
384#define __align8 __attribute__ ((aligned (8)))
385
386void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
387
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388#else
389
390#define __align8
391
392#endif
393
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394#ifdef __GNUC__
395
396struct unaligned_64 { uint64_t l; } __attribute__((packed));
397struct unaligned_32 { uint32_t l; } __attribute__((packed));
669ac79c 398struct unaligned_16 { uint16_t l; } __attribute__((packed));
6d4985bb 399
669ac79c 400#define LD16(a) (((const struct unaligned_16 *) (a))->l)
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401#define LD32(a) (((const struct unaligned_32 *) (a))->l)
402#define LD64(a) (((const struct unaligned_64 *) (a))->l)
403
404#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
405
406#else /* __GNUC__ */
407
669ac79c 408#define LD16(a) (*((uint16_t*)(a)))
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409#define LD32(a) (*((uint32_t*)(a)))
410#define LD64(a) (*((uint64_t*)(a)))
411
412#define ST32(a, b) *((uint32_t*)(a)) = (b)
413
414#endif /* !__GNUC__ */
415
43f1708f 416/* PSNR */
0c1a9eda 417void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
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418 int orig_linesize[3], int coded_linesize,
419 AVCodecContext *avctx);
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420
421/* FFT computation */
422
423/* NOTE: soon integer code will be added, so you must use the
424 FFTSample type */
425typedef float FFTSample;
426
427typedef struct FFTComplex {
428 FFTSample re, im;
429} FFTComplex;
430
431typedef struct FFTContext {
432 int nbits;
433 int inverse;
434 uint16_t *revtab;
435 FFTComplex *exptab;
436 FFTComplex *exptab1; /* only used by SSE code */
437 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
438} FFTContext;
439
440int fft_init(FFTContext *s, int nbits, int inverse);
441void fft_permute(FFTContext *s, FFTComplex *z);
442void fft_calc_c(FFTContext *s, FFTComplex *z);
443void fft_calc_sse(FFTContext *s, FFTComplex *z);
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444void fft_calc_altivec(FFTContext *s, FFTComplex *z);
445
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446static inline void fft_calc(FFTContext *s, FFTComplex *z)
447{
448 s->fft_calc(s, z);
449}
450void fft_end(FFTContext *s);
451
452/* MDCT computation */
453
454typedef struct MDCTContext {
455 int n; /* size of MDCT (i.e. number of input data * 2) */
456 int nbits; /* n = 2^nbits */
457 /* pre/post rotation tables */
458 FFTSample *tcos;
459 FFTSample *tsin;
460 FFTContext fft;
461} MDCTContext;
462
82696bee 463int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
eb4b3dd3 464void ff_imdct_calc(MDCTContext *s, FFTSample *output,
bb6f5690 465 const FFTSample *input, FFTSample *tmp);
eb4b3dd3 466void ff_mdct_calc(MDCTContext *s, FFTSample *out,
bb6f5690 467 const FFTSample *input, FFTSample *tmp);
82696bee 468void ff_mdct_end(MDCTContext *s);
bb6f5690 469
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470#define WARPER88_1616(name8, name16)\
471static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\
472 return name8(s, dst , src , stride)\
473 +name8(s, dst+8 , src+8 , stride)\
474 +name8(s, dst +8*stride, src +8*stride, stride)\
475 +name8(s, dst+8+8*stride, src+8+8*stride, stride);\
476}
477
95e2ce4a 478#ifndef HAVE_LRINTF
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479/* XXX: add ISOC specific test to avoid specific BSD testing. */
480/* better than nothing implementation. */
6234d753 481/* btw, rintf() is existing on fbsd too -- alex */
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482static inline long int lrintf(float x)
483{
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484#ifdef CONFIG_WIN32
485 /* XXX: incorrect, but make it compile */
486 return (int)(x);
487#else
9d85cbd9 488 return (int)(rint(x));
ea937d01 489#endif
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490}
491#endif
492
de6d9b64 493#endif