eb11166e250683cad36dbab9b4f93f08a46c6ae2
[libav.git] / libswscale / swscale_internal.h
1 /*
2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef SWSCALE_SWSCALE_INTERNAL_H
22 #define SWSCALE_SWSCALE_INTERNAL_H
23
24 #include "config.h"
25
26 #if HAVE_ALTIVEC_H
27 #include <altivec.h>
28 #endif
29
30 #include "libavutil/avutil.h"
31
32 #define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
33
34 #define MAX_FILTER_SIZE 256
35
36 #if ARCH_X86
37 #define VOFW 5120
38 #else
39 #define VOFW 2048 // faster on PPC and not tested on others
40 #endif
41
42 #define VOF (VOFW*2)
43
44 #ifdef WORDS_BIGENDIAN
45 #define ALT32_CORR (-1)
46 #else
47 #define ALT32_CORR 1
48 #endif
49
50 #if ARCH_X86_64
51 # define APCK_PTR2 8
52 # define APCK_COEF 16
53 # define APCK_SIZE 24
54 #else
55 # define APCK_PTR2 4
56 # define APCK_COEF 8
57 # define APCK_SIZE 16
58 #endif
59
60 struct SwsContext;
61
62 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[],
63 int srcStride[], int srcSliceY, int srcSliceH,
64 uint8_t* dst[], int dstStride[]);
65
66 /* This struct should be aligned on at least a 32-byte boundary. */
67 typedef struct SwsContext{
68 /**
69 * info on struct for av_log
70 */
71 const AVClass *av_class;
72
73 /**
74 * Note that src, dst, srcStride, dstStride will be copied in the
75 * sws_scale() wrapper so they can be freely modified here.
76 */
77 SwsFunc swScale;
78 int srcW, srcH, dstH;
79 int chrSrcW, chrSrcH, chrDstW, chrDstH;
80 int lumXInc, chrXInc;
81 int lumYInc, chrYInc;
82 enum PixelFormat dstFormat, srcFormat; ///< format 4:2:0 type is always YV12
83 int origDstFormat, origSrcFormat; ///< format
84 int chrSrcHSubSample, chrSrcVSubSample;
85 int chrIntHSubSample, chrIntVSubSample;
86 int chrDstHSubSample, chrDstVSubSample;
87 int vChrDrop;
88 int sliceDir;
89 double param[2];
90
91 uint32_t pal_yuv[256];
92 uint32_t pal_rgb[256];
93
94 int16_t **lumPixBuf;
95 int16_t **chrPixBuf;
96 int16_t **alpPixBuf;
97 int16_t *hLumFilter;
98 int16_t *hLumFilterPos;
99 int16_t *hChrFilter;
100 int16_t *hChrFilterPos;
101 int16_t *vLumFilter;
102 int16_t *vLumFilterPos;
103 int16_t *vChrFilter;
104 int16_t *vChrFilterPos;
105
106 uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
107
108 int hLumFilterSize;
109 int hChrFilterSize;
110 int vLumFilterSize;
111 int vChrFilterSize;
112 int vLumBufSize;
113 int vChrBufSize;
114
115 uint8_t *funnyYCode;
116 uint8_t *funnyUVCode;
117 int32_t *lumMmx2FilterPos;
118 int32_t *chrMmx2FilterPos;
119 int16_t *lumMmx2Filter;
120 int16_t *chrMmx2Filter;
121
122 int canMMX2BeUsed;
123
124 int lastInLumBuf;
125 int lastInChrBuf;
126 int lumBufIndex;
127 int chrBufIndex;
128 int dstY;
129 int flags;
130 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
131 uint8_t * table_rV[256];
132 uint8_t * table_gU[256];
133 int table_gV[256];
134 uint8_t * table_bU[256];
135
136 //Colorspace stuff
137 int contrast, brightness, saturation; // for sws_getColorspaceDetails
138 int srcColorspaceTable[4];
139 int dstColorspaceTable[4];
140 int srcRange, dstRange;
141 int yuv2rgb_y_offset;
142 int yuv2rgb_y_coeff;
143 int yuv2rgb_v2r_coeff;
144 int yuv2rgb_v2g_coeff;
145 int yuv2rgb_u2g_coeff;
146 int yuv2rgb_u2b_coeff;
147
148 #define RED_DITHER "0*8"
149 #define GREEN_DITHER "1*8"
150 #define BLUE_DITHER "2*8"
151 #define Y_COEFF "3*8"
152 #define VR_COEFF "4*8"
153 #define UB_COEFF "5*8"
154 #define VG_COEFF "6*8"
155 #define UG_COEFF "7*8"
156 #define Y_OFFSET "8*8"
157 #define U_OFFSET "9*8"
158 #define V_OFFSET "10*8"
159 #define LUM_MMX_FILTER_OFFSET "11*8"
160 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
161 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
162 #define ESP_OFFSET "11*8+4*4*256*2+8"
163 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
164 #define U_TEMP "11*8+4*4*256*2+24"
165 #define V_TEMP "11*8+4*4*256*2+32"
166 #define Y_TEMP "11*8+4*4*256*2+40"
167 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
168
169 uint64_t redDither __attribute__((aligned(8)));
170 uint64_t greenDither __attribute__((aligned(8)));
171 uint64_t blueDither __attribute__((aligned(8)));
172
173 uint64_t yCoeff __attribute__((aligned(8)));
174 uint64_t vrCoeff __attribute__((aligned(8)));
175 uint64_t ubCoeff __attribute__((aligned(8)));
176 uint64_t vgCoeff __attribute__((aligned(8)));
177 uint64_t ugCoeff __attribute__((aligned(8)));
178 uint64_t yOffset __attribute__((aligned(8)));
179 uint64_t uOffset __attribute__((aligned(8)));
180 uint64_t vOffset __attribute__((aligned(8)));
181 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
182 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
183 int dstW;
184 uint64_t esp __attribute__((aligned(8)));
185 uint64_t vRounder __attribute__((aligned(8)));
186 uint64_t u_temp __attribute__((aligned(8)));
187 uint64_t v_temp __attribute__((aligned(8)));
188 uint64_t y_temp __attribute__((aligned(8)));
189 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
190
191 #if HAVE_ALTIVEC
192 vector signed short CY;
193 vector signed short CRV;
194 vector signed short CBU;
195 vector signed short CGU;
196 vector signed short CGV;
197 vector signed short OY;
198 vector unsigned short CSHIFT;
199 vector signed short *vYCoeffsBank, *vCCoeffsBank;
200 #endif
201
202 #if ARCH_BFIN
203 uint32_t oy __attribute__((aligned(4)));
204 uint32_t oc __attribute__((aligned(4)));
205 uint32_t zero __attribute__((aligned(4)));
206 uint32_t cy __attribute__((aligned(4)));
207 uint32_t crv __attribute__((aligned(4)));
208 uint32_t rmask __attribute__((aligned(4)));
209 uint32_t cbu __attribute__((aligned(4)));
210 uint32_t bmask __attribute__((aligned(4)));
211 uint32_t cgu __attribute__((aligned(4)));
212 uint32_t cgv __attribute__((aligned(4)));
213 uint32_t gmask __attribute__((aligned(4)));
214 #endif
215
216 #if HAVE_VIS
217 uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
218 #endif
219
220 /* function pointers for swScale() */
221 void (*yuv2nv12X )(struct SwsContext *c,
222 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
223 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
224 uint8_t *dest, uint8_t *uDest,
225 int dstW, int chrDstW, int dstFormat);
226 void (*yuv2yuv1 )(struct SwsContext *c,
227 const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
228 uint8_t *dest,
229 uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
230 long dstW, long chrDstW);
231 void (*yuv2yuvX )(struct SwsContext *c,
232 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
233 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
234 const int16_t **alpSrc,
235 uint8_t *dest,
236 uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
237 long dstW, long chrDstW);
238 void (*yuv2packed1)(struct SwsContext *c,
239 const uint16_t *buf0,
240 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
241 const uint16_t *abuf0,
242 uint8_t *dest,
243 int dstW, int uvalpha, int dstFormat, int flags, int y);
244 void (*yuv2packed2)(struct SwsContext *c,
245 const uint16_t *buf0, const uint16_t *buf1,
246 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
247 const uint16_t *abuf0, const uint16_t *abuf1,
248 uint8_t *dest,
249 int dstW, int yalpha, int uvalpha, int y);
250 void (*yuv2packedX)(struct SwsContext *c,
251 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
252 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
253 const int16_t **alpSrc, uint8_t *dest,
254 long dstW, long dstY);
255
256 void (*hyscale_internal)(uint8_t *dst, const uint8_t *src,
257 long width, uint32_t *pal);
258 void (*hascale_internal)(uint8_t *dst, const uint8_t *src,
259 long width, uint32_t *pal);
260 void (*hcscale_internal)(uint8_t *dstU, uint8_t *dstV,
261 const uint8_t *src1, const uint8_t *src2,
262 long width, uint32_t *pal);
263 void (*hyscale_fast)(struct SwsContext *c,
264 int16_t *dst, int dstWidth,
265 const uint8_t *src, int srcW, int xInc);
266 void (*hcscale_fast)(struct SwsContext *c,
267 int16_t *dst, int dstWidth,
268 const uint8_t *src1, const uint8_t *src2,
269 int srcW, int xInc);
270
271 void (*hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW,
272 int xInc, const int16_t *filter, const int16_t *filterPos,
273 long filterSize);
274
275 } SwsContext;
276 //FIXME check init (where 0)
277
278 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
279 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
280 int fullRange, int brightness,
281 int contrast, int saturation);
282
283 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
284 int brightness, int contrast, int saturation);
285 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
286 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
287 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
288 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
289 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
290 void ff_bfin_get_unscaled_swscale(SwsContext *c);
291 void ff_yuv2packedX_altivec(SwsContext *c,
292 int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
293 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
294 uint8_t *dest, int dstW, int dstY);
295
296 const char *sws_format_name(int format);
297
298 //FIXME replace this with something faster
299 #define is16BPS(x) ( \
300 (x)==PIX_FMT_GRAY16BE \
301 || (x)==PIX_FMT_GRAY16LE \
302 || (x)==PIX_FMT_YUV420PLE \
303 || (x)==PIX_FMT_YUV422PLE \
304 || (x)==PIX_FMT_YUV444PLE \
305 || (x)==PIX_FMT_YUV420PBE \
306 || (x)==PIX_FMT_YUV422PBE \
307 || (x)==PIX_FMT_YUV444PBE \
308 )
309 #define isBE(x) ((x)&1)
310 #define isPlanar8YUV(x) ( \
311 (x)==PIX_FMT_YUV410P \
312 || (x)==PIX_FMT_YUV420P \
313 || (x)==PIX_FMT_YUVA420P \
314 || (x)==PIX_FMT_YUV411P \
315 || (x)==PIX_FMT_YUV422P \
316 || (x)==PIX_FMT_YUV444P \
317 || (x)==PIX_FMT_YUV440P \
318 || (x)==PIX_FMT_NV12 \
319 || (x)==PIX_FMT_NV21 \
320 )
321 #define isPlanarYUV(x) ( \
322 isPlanar8YUV(x) \
323 || (x)==PIX_FMT_YUV420PLE \
324 || (x)==PIX_FMT_YUV422PLE \
325 || (x)==PIX_FMT_YUV444PLE \
326 || (x)==PIX_FMT_YUV420PBE \
327 || (x)==PIX_FMT_YUV422PBE \
328 || (x)==PIX_FMT_YUV444PBE \
329 )
330 #define isYUV(x) ( \
331 (x)==PIX_FMT_UYVY422 \
332 || (x)==PIX_FMT_YUYV422 \
333 || isPlanarYUV(x) \
334 )
335 #define isGray(x) ( \
336 (x)==PIX_FMT_GRAY8 \
337 || (x)==PIX_FMT_GRAY16BE \
338 || (x)==PIX_FMT_GRAY16LE \
339 )
340 #define isGray16(x) ( \
341 (x)==PIX_FMT_GRAY16BE \
342 || (x)==PIX_FMT_GRAY16LE \
343 )
344 #define isRGB(x) ( \
345 (x)==PIX_FMT_RGB32 \
346 || (x)==PIX_FMT_RGB32_1 \
347 || (x)==PIX_FMT_RGB24 \
348 || (x)==PIX_FMT_RGB565 \
349 || (x)==PIX_FMT_RGB555 \
350 || (x)==PIX_FMT_RGB8 \
351 || (x)==PIX_FMT_RGB4 \
352 || (x)==PIX_FMT_RGB4_BYTE \
353 || (x)==PIX_FMT_MONOBLACK \
354 || (x)==PIX_FMT_MONOWHITE \
355 )
356 #define isBGR(x) ( \
357 (x)==PIX_FMT_BGR32 \
358 || (x)==PIX_FMT_BGR32_1 \
359 || (x)==PIX_FMT_BGR24 \
360 || (x)==PIX_FMT_BGR565 \
361 || (x)==PIX_FMT_BGR555 \
362 || (x)==PIX_FMT_BGR8 \
363 || (x)==PIX_FMT_BGR4 \
364 || (x)==PIX_FMT_BGR4_BYTE \
365 || (x)==PIX_FMT_MONOBLACK \
366 || (x)==PIX_FMT_MONOWHITE \
367 )
368 #define isALPHA(x) ( \
369 (x)==PIX_FMT_BGR32 \
370 || (x)==PIX_FMT_BGR32_1 \
371 || (x)==PIX_FMT_RGB32 \
372 || (x)==PIX_FMT_RGB32_1 \
373 || (x)==PIX_FMT_YUVA420P \
374 )
375
376 static inline int fmt_depth(int fmt)
377 {
378 switch(fmt) {
379 case PIX_FMT_BGRA:
380 case PIX_FMT_ABGR:
381 case PIX_FMT_RGBA:
382 case PIX_FMT_ARGB:
383 return 32;
384 case PIX_FMT_BGR24:
385 case PIX_FMT_RGB24:
386 return 24;
387 case PIX_FMT_BGR565:
388 case PIX_FMT_RGB565:
389 case PIX_FMT_GRAY16BE:
390 case PIX_FMT_GRAY16LE:
391 return 16;
392 case PIX_FMT_BGR555:
393 case PIX_FMT_RGB555:
394 return 15;
395 case PIX_FMT_BGR8:
396 case PIX_FMT_RGB8:
397 return 8;
398 case PIX_FMT_BGR4:
399 case PIX_FMT_RGB4:
400 case PIX_FMT_BGR4_BYTE:
401 case PIX_FMT_RGB4_BYTE:
402 return 4;
403 case PIX_FMT_MONOBLACK:
404 case PIX_FMT_MONOWHITE:
405 return 1;
406 default:
407 return 0;
408 }
409 }
410
411 extern const uint64_t ff_dither4[2];
412 extern const uint64_t ff_dither8[2];
413
414 extern const AVClass sws_context_class;
415
416 #endif /* SWSCALE_SWSCALE_INTERNAL_H */