eb73fa6daef0fee0df021ce9040751e3c150e7cf
[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 #if HAVE_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 chrSrcHSubSample, chrSrcVSubSample;
84 int chrDstHSubSample, chrDstVSubSample;
85 int vChrDrop;
86 int sliceDir;
87 double param[2];
88
89 uint32_t pal_yuv[256];
90 uint32_t pal_rgb[256];
91
92 int16_t **lumPixBuf;
93 int16_t **chrPixBuf;
94 int16_t **alpPixBuf;
95 int16_t *hLumFilter;
96 int16_t *hLumFilterPos;
97 int16_t *hChrFilter;
98 int16_t *hChrFilterPos;
99 int16_t *vLumFilter;
100 int16_t *vLumFilterPos;
101 int16_t *vChrFilter;
102 int16_t *vChrFilterPos;
103
104 uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
105
106 int hLumFilterSize;
107 int hChrFilterSize;
108 int vLumFilterSize;
109 int vChrFilterSize;
110 int vLumBufSize;
111 int vChrBufSize;
112
113 int lumMmx2FilterCodeSize;
114 int chrMmx2FilterCodeSize;
115 uint8_t *lumMmx2FilterCode;
116 uint8_t *chrMmx2FilterCode;
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 DECLARE_ALIGNED(8, uint64_t, redDither);
170 DECLARE_ALIGNED(8, uint64_t, greenDither);
171 DECLARE_ALIGNED(8, uint64_t, blueDither);
172
173 DECLARE_ALIGNED(8, uint64_t, yCoeff);
174 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
175 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
176 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
177 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
178 DECLARE_ALIGNED(8, uint64_t, yOffset);
179 DECLARE_ALIGNED(8, uint64_t, uOffset);
180 DECLARE_ALIGNED(8, uint64_t, vOffset);
181 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
182 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
183 int dstW;
184 DECLARE_ALIGNED(8, uint64_t, esp);
185 DECLARE_ALIGNED(8, uint64_t, vRounder);
186 DECLARE_ALIGNED(8, uint64_t, u_temp);
187 DECLARE_ALIGNED(8, uint64_t, v_temp);
188 DECLARE_ALIGNED(8, uint64_t, y_temp);
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 DECLARE_ALIGNED(4, uint32_t, oy);
204 DECLARE_ALIGNED(4, uint32_t, oc);
205 DECLARE_ALIGNED(4, uint32_t, zero);
206 DECLARE_ALIGNED(4, uint32_t, cy);
207 DECLARE_ALIGNED(4, uint32_t, crv);
208 DECLARE_ALIGNED(4, uint32_t, rmask);
209 DECLARE_ALIGNED(4, uint32_t, cbu);
210 DECLARE_ALIGNED(4, uint32_t, bmask);
211 DECLARE_ALIGNED(4, uint32_t, cgu);
212 DECLARE_ALIGNED(4, uint32_t, cgv);
213 DECLARE_ALIGNED(4, uint32_t, gmask);
214 #endif
215
216 #if HAVE_VIS
217 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs[10]);
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 void (*lumConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
276 void (*chrConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for chroma planes if needed.
277
278 int lumSrcOffset; ///< Offset given to luma src pointers passed to horizontal input functions.
279 int chrSrcOffset; ///< Offset given to chroma src pointers passed to horizontal input functions.
280 int alpSrcOffset; ///< Offset given to alpha src pointers passed to horizontal input functions.
281
282 int needs_hcscale; ///< Set if there are chroma planes to be converted.
283
284 } SwsContext;
285 //FIXME check init (where 0)
286
287 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
288 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
289 int fullRange, int brightness,
290 int contrast, int saturation);
291
292 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
293 int brightness, int contrast, int saturation);
294 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
295 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
296 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
297 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
298 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
299 void ff_bfin_get_unscaled_swscale(SwsContext *c);
300 void ff_yuv2packedX_altivec(SwsContext *c,
301 const int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
302 const int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
303 uint8_t *dest, int dstW, int dstY);
304
305 const char *sws_format_name(enum PixelFormat format);
306
307 //FIXME replace this with something faster
308 #define is16BPS(x) ( \
309 (x)==PIX_FMT_GRAY16BE \
310 || (x)==PIX_FMT_GRAY16LE \
311 || (x)==PIX_FMT_RGB48BE \
312 || (x)==PIX_FMT_RGB48LE \
313 || (x)==PIX_FMT_YUV420P16LE \
314 || (x)==PIX_FMT_YUV422P16LE \
315 || (x)==PIX_FMT_YUV444P16LE \
316 || (x)==PIX_FMT_YUV420P16BE \
317 || (x)==PIX_FMT_YUV422P16BE \
318 || (x)==PIX_FMT_YUV444P16BE \
319 )
320 #define isBE(x) ((x)&1)
321 #define isPlanar8YUV(x) ( \
322 (x)==PIX_FMT_YUV410P \
323 || (x)==PIX_FMT_YUV420P \
324 || (x)==PIX_FMT_YUVA420P \
325 || (x)==PIX_FMT_YUV411P \
326 || (x)==PIX_FMT_YUV422P \
327 || (x)==PIX_FMT_YUV444P \
328 || (x)==PIX_FMT_YUV440P \
329 || (x)==PIX_FMT_NV12 \
330 || (x)==PIX_FMT_NV21 \
331 )
332 #define isPlanarYUV(x) ( \
333 isPlanar8YUV(x) \
334 || (x)==PIX_FMT_YUV420P16LE \
335 || (x)==PIX_FMT_YUV422P16LE \
336 || (x)==PIX_FMT_YUV444P16LE \
337 || (x)==PIX_FMT_YUV420P16BE \
338 || (x)==PIX_FMT_YUV422P16BE \
339 || (x)==PIX_FMT_YUV444P16BE \
340 )
341 #define isYUV(x) ( \
342 (x)==PIX_FMT_UYVY422 \
343 || (x)==PIX_FMT_YUYV422 \
344 || isPlanarYUV(x) \
345 )
346 #define isGray(x) ( \
347 (x)==PIX_FMT_GRAY8 \
348 || (x)==PIX_FMT_GRAY16BE \
349 || (x)==PIX_FMT_GRAY16LE \
350 )
351 #define isGray16(x) ( \
352 (x)==PIX_FMT_GRAY16BE \
353 || (x)==PIX_FMT_GRAY16LE \
354 )
355 #define isRGB(x) ( \
356 (x)==PIX_FMT_RGB48BE \
357 || (x)==PIX_FMT_RGB48LE \
358 || (x)==PIX_FMT_RGB32 \
359 || (x)==PIX_FMT_RGB32_1 \
360 || (x)==PIX_FMT_RGB24 \
361 || (x)==PIX_FMT_RGB565 \
362 || (x)==PIX_FMT_RGB555 \
363 || (x)==PIX_FMT_RGB8 \
364 || (x)==PIX_FMT_RGB4 \
365 || (x)==PIX_FMT_RGB4_BYTE \
366 || (x)==PIX_FMT_MONOBLACK \
367 || (x)==PIX_FMT_MONOWHITE \
368 )
369 #define isBGR(x) ( \
370 (x)==PIX_FMT_BGR32 \
371 || (x)==PIX_FMT_BGR32_1 \
372 || (x)==PIX_FMT_BGR24 \
373 || (x)==PIX_FMT_BGR565 \
374 || (x)==PIX_FMT_BGR555 \
375 || (x)==PIX_FMT_BGR8 \
376 || (x)==PIX_FMT_BGR4 \
377 || (x)==PIX_FMT_BGR4_BYTE \
378 || (x)==PIX_FMT_MONOBLACK \
379 || (x)==PIX_FMT_MONOWHITE \
380 )
381 #define isALPHA(x) ( \
382 (x)==PIX_FMT_BGR32 \
383 || (x)==PIX_FMT_BGR32_1 \
384 || (x)==PIX_FMT_RGB32 \
385 || (x)==PIX_FMT_RGB32_1 \
386 || (x)==PIX_FMT_YUVA420P \
387 )
388
389 static inline int fmt_depth(int fmt)
390 {
391 switch(fmt) {
392 case PIX_FMT_RGB48BE:
393 case PIX_FMT_RGB48LE:
394 return 48;
395 case PIX_FMT_BGRA:
396 case PIX_FMT_ABGR:
397 case PIX_FMT_RGBA:
398 case PIX_FMT_ARGB:
399 return 32;
400 case PIX_FMT_BGR24:
401 case PIX_FMT_RGB24:
402 return 24;
403 case PIX_FMT_BGR565:
404 case PIX_FMT_RGB565:
405 case PIX_FMT_GRAY16BE:
406 case PIX_FMT_GRAY16LE:
407 return 16;
408 case PIX_FMT_BGR555:
409 case PIX_FMT_RGB555:
410 return 15;
411 case PIX_FMT_BGR8:
412 case PIX_FMT_RGB8:
413 return 8;
414 case PIX_FMT_BGR4:
415 case PIX_FMT_RGB4:
416 case PIX_FMT_BGR4_BYTE:
417 case PIX_FMT_RGB4_BYTE:
418 return 4;
419 case PIX_FMT_MONOBLACK:
420 case PIX_FMT_MONOWHITE:
421 return 1;
422 default:
423 return 0;
424 }
425 }
426
427 extern const uint64_t ff_dither4[2];
428 extern const uint64_t ff_dither8[2];
429
430 extern const AVClass sws_context_class;
431
432 #endif /* SWSCALE_SWSCALE_INTERNAL_H */