10l
[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);
28db7fce 39void ff_jpeg_fdct_islow (DCTELEM *data);
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40
41void j_rev_dct (DCTELEM *data);
42
3f09f52a 43void ff_fdct_mmx(DCTELEM *block);
de6d9b64 44
e0eac44e 45/* encoding scans */
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46extern const uint8_t ff_alternate_horizontal_scan[64];
47extern const uint8_t ff_alternate_vertical_scan[64];
48extern const uint8_t ff_zigzag_direct[64];
5a240838 49
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50/* pixel operations */
51#define MAX_NEG_CROP 384
52
53/* temporary */
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54extern uint32_t squareTbl[512];
55extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
de6d9b64 56
de6d9b64 57
b7c27ee6 58/* minimum alignment rules ;)
eb4b3dd3 59if u notice errors in the align stuff, need more alignment for some asm code for some cpu
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60or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
61
62!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
63i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
de6d9b64 64
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65!future video codecs might need functions with less strict alignment
66*/
67
eb4b3dd3 68/*
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69void get_pixels_c(DCTELEM *block, const uint8_t *pixels, int line_size);
70void diff_pixels_c(DCTELEM *block, const uint8_t *s1, const uint8_t *s2, int stride);
71void put_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
72void add_pixels_clamped_c(const DCTELEM *block, uint8_t *pixels, int line_size);
649c00c9 73void clear_blocks_c(DCTELEM *blocks);
eb4b3dd3 74*/
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75
76/* add and put pixel (decoding) */
b7c27ee6 77// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
0c1a9eda 78typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
669ac79c 79typedef 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 80typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
0da71265 81typedef void (*h264_chroma_mc_func)(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int srcStride, int h, int x, int y);
b3184779 82
db794953 83#define DEF_OLD_QPEL(name)\
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84void ff_put_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
85void ff_put_no_rnd_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);\
86void ff_avg_ ## name (uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
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87
88DEF_OLD_QPEL(qpel16_mc11_old_c)
89DEF_OLD_QPEL(qpel16_mc31_old_c)
90DEF_OLD_QPEL(qpel16_mc12_old_c)
91DEF_OLD_QPEL(qpel16_mc32_old_c)
92DEF_OLD_QPEL(qpel16_mc13_old_c)
93DEF_OLD_QPEL(qpel16_mc33_old_c)
94DEF_OLD_QPEL(qpel8_mc11_old_c)
95DEF_OLD_QPEL(qpel8_mc31_old_c)
96DEF_OLD_QPEL(qpel8_mc12_old_c)
97DEF_OLD_QPEL(qpel8_mc32_old_c)
98DEF_OLD_QPEL(qpel8_mc13_old_c)
99DEF_OLD_QPEL(qpel8_mc33_old_c)
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100
101#define CALL_2X_PIXELS(a, b, n)\
102static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
103 b(block , pixels , line_size, h);\
104 b(block+n, pixels+n, line_size, h);\
105}
44eb4951 106
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107/* motion estimation */
108
0c1a9eda 109typedef int (*op_pixels_abs_func)(uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size)/* __attribute__ ((const))*/;
1457ab52 110
0c1a9eda 111typedef 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 112
0da71265 113
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114/**
115 * DSPContext.
116 */
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117typedef struct DSPContext {
118 /* pixel ops : interface with DCT */
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119 void (*get_pixels)(DCTELEM *block/*align 16*/, const uint8_t *pixels/*align 8*/, int line_size);
120 void (*diff_pixels)(DCTELEM *block/*align 16*/, const uint8_t *s1/*align 8*/, const uint8_t *s2/*align 8*/, int stride);
121 void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
122 void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, uint8_t *pixels/*align 8*/, int line_size);
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123 /**
124 * translational global motion compensation.
125 */
0c1a9eda 126 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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127 /**
128 * global motion compensation.
129 */
0c1a9eda 130 void (*gmc )(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int ox, int oy,
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131 int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height);
132 void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
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133 int (*pix_sum)(uint8_t * pix, int line_size);
134 int (*pix_norm1)(uint8_t * pix, int line_size);
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135 me_cmp_func sad[2]; /* identical to pix_absAxA except additional void * */
136 me_cmp_func sse[2];
137 me_cmp_func hadamard8_diff[2];
138 me_cmp_func dct_sad[2];
139 me_cmp_func quant_psnr[2];
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140 me_cmp_func bit[2];
141 me_cmp_func rd[2];
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142 int (*hadamard8_abs )(uint8_t *src, int stride, int mean);
143
826f429a 144 me_cmp_func me_pre_cmp[11];
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145 me_cmp_func me_cmp[11];
146 me_cmp_func me_sub_cmp[11];
147 me_cmp_func mb_cmp[11];
eb4b3dd3 148
669ac79c 149 /* maybe create an array for 16/8/4/2 functions */
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150 /**
151 * Halfpel motion compensation with rounding (a+b+1)>>1.
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152 * this is an array[4][4] of motion compensation funcions for 4
153 * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
5755c27f 154 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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155 * @param block destination where the result is stored
156 * @param pixels source
157 * @param line_size number of bytes in a horizontal line of block
158 * @param h height
159 */
669ac79c 160 op_pixels_func put_pixels_tab[4][4];
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161
162 /**
163 * Halfpel motion compensation with rounding (a+b+1)>>1.
4e8eed2f 164 * This is an array[4][4] of motion compensation functions for 4
da3b9756 165 * horizontal blocksizes (2,4,8,16) and the 4 halfpel positions<br>
5755c27f 166 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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167 * @param block destination into which the result is averaged (a+b+1)>>1
168 * @param pixels source
169 * @param line_size number of bytes in a horizontal line of block
170 * @param h height
171 */
da3b9756 172 op_pixels_func avg_pixels_tab[4][4];
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173
174 /**
175 * Halfpel motion compensation with no rounding (a+b)>>1.
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176 * this is an array[2][4] of motion compensation funcions for 2
177 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
5755c27f 178 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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179 * @param block destination where the result is stored
180 * @param pixels source
181 * @param line_size number of bytes in a horizontal line of block
182 * @param h height
183 */
eb4b3dd3 184 op_pixels_func put_no_rnd_pixels_tab[2][4];
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185
186 /**
187 * Halfpel motion compensation with no rounding (a+b)>>1.
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188 * this is an array[2][4] of motion compensation funcions for 2
189 * horizontal blocksizes (8,16) and the 4 halfpel positions<br>
5755c27f 190 * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
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191 * @param block destination into which the result is averaged (a+b)>>1
192 * @param pixels source
193 * @param line_size number of bytes in a horizontal line of block
194 * @param h height
195 */
eb4b3dd3 196 op_pixels_func avg_no_rnd_pixels_tab[2][4];
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197
198 /**
199 * Thirdpel motion compensation with rounding (a+b+1)>>1.
200 * this is an array[12] of motion compensation funcions for the 9 thirdpel positions<br>
201 * *pixels_tab[ xthirdpel + 4*ythirdpel ]
202 * @param block destination where the result is stored
203 * @param pixels source
204 * @param line_size number of bytes in a horizontal line of block
205 * @param h height
206 */
207 tpel_mc_func put_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
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208 tpel_mc_func avg_tpel_pixels_tab[11]; //FIXME individual func ptr per width?
209
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210 qpel_mc_func put_qpel_pixels_tab[2][16];
211 qpel_mc_func avg_qpel_pixels_tab[2][16];
212 qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
213 qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
1457ab52 214 qpel_mc_func put_mspel_pixels_tab[8];
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215
216 /**
217 * h264 Chram MC
218 */
219 h264_chroma_mc_func put_h264_chroma_pixels_tab[3];
220 h264_chroma_mc_func avg_h264_chroma_pixels_tab[3];
eb4b3dd3 221
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222 qpel_mc_func put_h264_qpel_pixels_tab[3][16];
223 qpel_mc_func avg_h264_qpel_pixels_tab[3][16];
224
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225 op_pixels_abs_func pix_abs16x16;
226 op_pixels_abs_func pix_abs16x16_x2;
227 op_pixels_abs_func pix_abs16x16_y2;
228 op_pixels_abs_func pix_abs16x16_xy2;
229 op_pixels_abs_func pix_abs8x8;
230 op_pixels_abs_func pix_abs8x8_x2;
231 op_pixels_abs_func pix_abs8x8_y2;
232 op_pixels_abs_func pix_abs8x8_xy2;
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233
234 /* huffyuv specific */
11f18faf 235 void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
1457ab52 236 void (*diff_bytes)(uint8_t *dst/*align 16*/, uint8_t *src1/*align 16*/, uint8_t *src2/*align 1*/,int w);
3d2e8cce 237 void (*bswap_buf)(uint32_t *dst, uint32_t *src, int w);
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238
239 /* (I)DCT */
240 void (*fdct)(DCTELEM *block/* align 16*/);
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241
242 /* IDCT really*/
243 void (*idct)(DCTELEM *block/* align 16*/);
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244
245 /**
77c92c2d 246 * block -> idct -> clip to unsigned 8 bit -> dest.
24641185 247 * (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
a1adf436 248 * @param line_size size in bytes of a horizotal line of dest
24641185 249 */
b0368839 250 void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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251
252 /**
253 * block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
a1adf436 254 * @param line_size size in bytes of a horizotal line of dest
24641185 255 */
b0368839 256 void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
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257
258 /**
77c92c2d 259 * idct input permutation.
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260 * several optimized IDCTs need a permutated input (relative to the normal order of the reference
261 * IDCT)
262 * this permutation must be performed before the idct_put/add, note, normally this can be merged
263 * with the zigzag/alternate scan<br>
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264 * an example to avoid confusion:
265 * - (->decode coeffs -> zigzag reorder -> dequant -> reference idct ->...)
266 * - (x -> referece dct -> reference idct -> x)
267 * - (x -> referece dct -> simple_mmx_perm = idct_permutation -> simple_idct_mmx -> x)
268 * - (->decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant -> simple_idct_mmx ->...)
269 */
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270 uint8_t idct_permutation[64];
271 int idct_permutation_type;
272#define FF_NO_IDCT_PERM 1
273#define FF_LIBMPEG2_IDCT_PERM 2
274#define FF_SIMPLE_IDCT_PERM 3
275#define FF_TRANSPOSE_IDCT_PERM 4
276
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277} DSPContext;
278
59cf08ce 279void dsputil_static_init(void);
b0368839 280void dsputil_init(DSPContext* p, AVCodecContext *avctx);
de6d9b64 281
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282/**
283 * permute block according to permuatation.
284 * @param last last non zero element in scantable order
285 */
0c1a9eda 286void ff_block_permute(DCTELEM *block, uint8_t *permutation, const uint8_t *scantable, int last);
e0eac44e 287
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288#define BYTE_VEC32(c) ((c)*0x01010101UL)
289
290static inline uint32_t rnd_avg32(uint32_t a, uint32_t b)
291{
292 return (a | b) - (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
293}
294
295static inline uint32_t no_rnd_avg32(uint32_t a, uint32_t b)
296{
297 return (a & b) + (((a ^ b) & ~BYTE_VEC32(0x01)) >> 1);
298}
299
24641185 300/**
77c92c2d 301 * Empty mmx state.
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302 * this must be called between any dsp function and float/double code.
303 * for example sin(); dsp->idct_put(); emms_c(); cos()
304 */
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305#define emms_c()
306
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307/* should be defined by architectures supporting
308 one or more MultiMedia extension */
309int mm_support(void);
310
3d03c0a2 311#if defined(HAVE_MMX)
de6d9b64 312
18f77016 313#undef emms_c
eb4b3dd3 314
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315#define MM_MMX 0x0001 /* standard MMX */
316#define MM_3DNOW 0x0004 /* AMD 3DNOW */
317#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
318#define MM_SSE 0x0008 /* SSE functions */
319#define MM_SSE2 0x0010 /* PIV SSE2 functions */
320
321extern int mm_flags;
322
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323void add_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
324void put_pixels_clamped_mmx(const DCTELEM *block, uint8_t *pixels, int line_size);
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325
326static inline void emms(void)
327{
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328 __asm __volatile ("emms;":::"memory");
329}
330
1457ab52 331
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332#define emms_c() \
333{\
334 if (mm_flags & MM_MMX)\
335 emms();\
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336}
337
338#define __align8 __attribute__ ((aligned (8)))
339
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340void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx);
341void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
2720569a 342
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343#elif defined(ARCH_ARMV4L)
344
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345/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
346 line ptimizations */
347#define __align8 __attribute__ ((aligned (4)))
348
b0368839 349void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
3d03c0a2 350
c34270f5 351#elif defined(HAVE_MLIB)
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352
353/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
354#define __align8 __attribute__ ((aligned (8)))
355
b0368839 356void dsputil_init_mlib(DSPContext* c, AVCodecContext *avctx);
c34270f5 357
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358#elif defined(ARCH_ALPHA)
359
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360#define __align8 __attribute__ ((aligned (8)))
361
b0368839 362void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
1e98dffb 363
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364#elif defined(ARCH_POWERPC)
365
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366#define MM_ALTIVEC 0x0001 /* standard AltiVec */
367
368extern int mm_flags;
369
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370#if defined(HAVE_ALTIVEC) && !defined(CONFIG_DARWIN)
371#include <altivec.h>
372#endif
373
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374#define __align8 __attribute__ ((aligned (16)))
375
b0368839 376void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx);
59925ef2 377
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378#elif defined(HAVE_MMI)
379
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380#define __align8 __attribute__ ((aligned (16)))
381
b0368839 382void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx);
d46aba26 383
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384#elif defined(ARCH_SH4)
385
386#define __align8 __attribute__ ((aligned (8)))
387
388void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx);
389
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390#else
391
392#define __align8
393
394#endif
395
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396#ifdef __GNUC__
397
398struct unaligned_64 { uint64_t l; } __attribute__((packed));
399struct unaligned_32 { uint32_t l; } __attribute__((packed));
669ac79c 400struct unaligned_16 { uint16_t l; } __attribute__((packed));
6d4985bb 401
669ac79c 402#define LD16(a) (((const struct unaligned_16 *) (a))->l)
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403#define LD32(a) (((const struct unaligned_32 *) (a))->l)
404#define LD64(a) (((const struct unaligned_64 *) (a))->l)
405
406#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
407
408#else /* __GNUC__ */
409
669ac79c 410#define LD16(a) (*((uint16_t*)(a)))
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411#define LD32(a) (*((uint32_t*)(a)))
412#define LD64(a) (*((uint64_t*)(a)))
413
414#define ST32(a, b) *((uint32_t*)(a)) = (b)
415
416#endif /* !__GNUC__ */
417
43f1708f 418/* PSNR */
0c1a9eda 419void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
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420 int orig_linesize[3], int coded_linesize,
421 AVCodecContext *avctx);
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422
423/* FFT computation */
424
425/* NOTE: soon integer code will be added, so you must use the
426 FFTSample type */
427typedef float FFTSample;
428
429typedef struct FFTComplex {
430 FFTSample re, im;
431} FFTComplex;
432
433typedef struct FFTContext {
434 int nbits;
435 int inverse;
436 uint16_t *revtab;
437 FFTComplex *exptab;
438 FFTComplex *exptab1; /* only used by SSE code */
439 void (*fft_calc)(struct FFTContext *s, FFTComplex *z);
440} FFTContext;
441
442int fft_init(FFTContext *s, int nbits, int inverse);
443void fft_permute(FFTContext *s, FFTComplex *z);
444void fft_calc_c(FFTContext *s, FFTComplex *z);
445void fft_calc_sse(FFTContext *s, FFTComplex *z);
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446void fft_calc_altivec(FFTContext *s, FFTComplex *z);
447
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448static inline void fft_calc(FFTContext *s, FFTComplex *z)
449{
450 s->fft_calc(s, z);
451}
452void fft_end(FFTContext *s);
453
454/* MDCT computation */
455
456typedef struct MDCTContext {
457 int n; /* size of MDCT (i.e. number of input data * 2) */
458 int nbits; /* n = 2^nbits */
459 /* pre/post rotation tables */
460 FFTSample *tcos;
461 FFTSample *tsin;
462 FFTContext fft;
463} MDCTContext;
464
82696bee 465int ff_mdct_init(MDCTContext *s, int nbits, int inverse);
eb4b3dd3 466void ff_imdct_calc(MDCTContext *s, FFTSample *output,
bb6f5690 467 const FFTSample *input, FFTSample *tmp);
eb4b3dd3 468void ff_mdct_calc(MDCTContext *s, FFTSample *out,
bb6f5690 469 const FFTSample *input, FFTSample *tmp);
82696bee 470void ff_mdct_end(MDCTContext *s);
bb6f5690 471
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472#define WARPER88_1616(name8, name16)\
473static int name16(void /*MpegEncContext*/ *s, uint8_t *dst, uint8_t *src, int stride){\
474 return name8(s, dst , src , stride)\
475 +name8(s, dst+8 , src+8 , stride)\
476 +name8(s, dst +8*stride, src +8*stride, stride)\
477 +name8(s, dst+8+8*stride, src+8+8*stride, stride);\
478}
479
95e2ce4a 480#ifndef HAVE_LRINTF
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481/* XXX: add ISOC specific test to avoid specific BSD testing. */
482/* better than nothing implementation. */
6234d753 483/* btw, rintf() is existing on fbsd too -- alex */
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484static inline long int lrintf(float x)
485{
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486#ifdef CONFIG_WIN32
487 /* XXX: incorrect, but make it compile */
488 return (int)(x);
489#else
9d85cbd9 490 return (int)(rint(x));
ea937d01 491#endif
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492}
493#endif
494
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495#if defined(CONFIG_OS2) || defined(CONFIG_SUNOS)
496static inline float floorf(float f) {
497 return floor(f);
498}
499#endif
500
de6d9b64 501#endif