2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of Libav.
6 * Libav 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.
11 * Libav 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef SWSCALE_SWSCALE_INTERNAL_H
22 #define SWSCALE_SWSCALE_INTERNAL_H
30 #include "libavutil/avutil.h"
32 #define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
34 #define FAST_BGR2YV12 //use 7-bit instead of 15-bit coefficients
36 #define MAX_FILTER_SIZE 256
41 #define VOFW 2048 // faster on PPC and not tested on others
47 #define ALT32_CORR (-1)
64 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
65 int srcStride[], int srcSliceY, int srcSliceH,
66 uint8_t* dst[], int dstStride[]);
68 /* This struct should be aligned on at least a 32-byte boundary. */
69 typedef struct SwsContext {
71 * info on struct for av_log
73 const AVClass *av_class;
76 * Note that src, dst, srcStride, dstStride will be copied in the
77 * sws_scale() wrapper so they can be freely modified here.
80 int srcW; ///< Width of source luma/alpha planes.
81 int srcH; ///< Height of source luma/alpha planes.
82 int dstH; ///< Height of destination luma/alpha planes.
83 int chrSrcW; ///< Width of source chroma planes.
84 int chrSrcH; ///< Height of source chroma planes.
85 int chrDstW; ///< Width of destination chroma planes.
86 int chrDstH; ///< Height of destination chroma planes.
89 enum PixelFormat dstFormat; ///< Destination pixel format.
90 enum PixelFormat srcFormat; ///< Source pixel format.
91 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
92 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
93 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
94 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
95 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
96 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
97 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
98 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
99 double param[2]; ///< Input parameters for scaling algorithms that need them.
101 uint32_t pal_yuv[256];
102 uint32_t pal_rgb[256];
105 * @name Scaled horizontal lines ring buffer.
106 * The horizontal scaler keeps just enough scaled lines in a ring buffer
107 * so they may be passed to the vertical scaler. The pointers to the
108 * allocated buffers for each line are duplicated in sequence in the ring
109 * buffer to simplify indexing and avoid wrapping around between lines
110 * inside the vertical scaler code. The wrapping is done before the
111 * vertical scaler is called.
114 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
115 int16_t **chrPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
116 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
117 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
118 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
119 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
120 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
121 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
122 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
125 uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
128 * @name Horizontal and vertical filters.
129 * To better understand the following fields, here is a pseudo-code of
130 * their usage in filtering a horizontal line:
132 * for (i = 0; i < width; i++) {
134 * for (j = 0; j < filterSize; j++)
135 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
136 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
141 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
142 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
143 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
144 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
145 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
146 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
147 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
148 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
149 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
150 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
151 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
152 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
155 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
156 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
157 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
158 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
162 int dstY; ///< Last destination vertical line output from last slice.
163 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
164 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
165 uint8_t * table_rV[256];
166 uint8_t * table_gU[256];
168 uint8_t * table_bU[256];
171 int contrast, brightness, saturation; // for sws_getColorspaceDetails
172 int srcColorspaceTable[4];
173 int dstColorspaceTable[4];
174 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
175 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
176 int yuv2rgb_y_offset;
178 int yuv2rgb_v2r_coeff;
179 int yuv2rgb_v2g_coeff;
180 int yuv2rgb_u2g_coeff;
181 int yuv2rgb_u2b_coeff;
183 #define RED_DITHER "0*8"
184 #define GREEN_DITHER "1*8"
185 #define BLUE_DITHER "2*8"
186 #define Y_COEFF "3*8"
187 #define VR_COEFF "4*8"
188 #define UB_COEFF "5*8"
189 #define VG_COEFF "6*8"
190 #define UG_COEFF "7*8"
191 #define Y_OFFSET "8*8"
192 #define U_OFFSET "9*8"
193 #define V_OFFSET "10*8"
194 #define LUM_MMX_FILTER_OFFSET "11*8"
195 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
196 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
197 #define ESP_OFFSET "11*8+4*4*256*2+8"
198 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
199 #define U_TEMP "11*8+4*4*256*2+24"
200 #define V_TEMP "11*8+4*4*256*2+32"
201 #define Y_TEMP "11*8+4*4*256*2+40"
202 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
204 DECLARE_ALIGNED(8, uint64_t, redDither);
205 DECLARE_ALIGNED(8, uint64_t, greenDither);
206 DECLARE_ALIGNED(8, uint64_t, blueDither);
208 DECLARE_ALIGNED(8, uint64_t, yCoeff);
209 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
210 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
211 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
212 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
213 DECLARE_ALIGNED(8, uint64_t, yOffset);
214 DECLARE_ALIGNED(8, uint64_t, uOffset);
215 DECLARE_ALIGNED(8, uint64_t, vOffset);
216 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
217 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
218 int dstW; ///< Width of destination luma/alpha planes.
219 DECLARE_ALIGNED(8, uint64_t, esp);
220 DECLARE_ALIGNED(8, uint64_t, vRounder);
221 DECLARE_ALIGNED(8, uint64_t, u_temp);
222 DECLARE_ALIGNED(8, uint64_t, v_temp);
223 DECLARE_ALIGNED(8, uint64_t, y_temp);
224 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
227 vector signed short CY;
228 vector signed short CRV;
229 vector signed short CBU;
230 vector signed short CGU;
231 vector signed short CGV;
232 vector signed short OY;
233 vector unsigned short CSHIFT;
234 vector signed short *vYCoeffsBank, *vCCoeffsBank;
238 DECLARE_ALIGNED(4, uint32_t, oy);
239 DECLARE_ALIGNED(4, uint32_t, oc);
240 DECLARE_ALIGNED(4, uint32_t, zero);
241 DECLARE_ALIGNED(4, uint32_t, cy);
242 DECLARE_ALIGNED(4, uint32_t, crv);
243 DECLARE_ALIGNED(4, uint32_t, rmask);
244 DECLARE_ALIGNED(4, uint32_t, cbu);
245 DECLARE_ALIGNED(4, uint32_t, bmask);
246 DECLARE_ALIGNED(4, uint32_t, cgu);
247 DECLARE_ALIGNED(4, uint32_t, cgv);
248 DECLARE_ALIGNED(4, uint32_t, gmask);
252 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
255 /* function pointers for swScale() */
256 void (*yuv2nv12X )(struct SwsContext *c,
257 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
258 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
259 uint8_t *dest, uint8_t *uDest,
260 int dstW, int chrDstW, int dstFormat);
261 void (*yuv2yuv1 )(struct SwsContext *c,
262 const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
264 uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
265 long dstW, long chrDstW);
266 void (*yuv2yuvX )(struct SwsContext *c,
267 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
268 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
269 const int16_t **alpSrc,
271 uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
272 long dstW, long chrDstW);
273 void (*yuv2packed1)(struct SwsContext *c,
274 const uint16_t *buf0,
275 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
276 const uint16_t *abuf0,
278 int dstW, int uvalpha, int dstFormat, int flags, int y);
279 void (*yuv2packed2)(struct SwsContext *c,
280 const uint16_t *buf0, const uint16_t *buf1,
281 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
282 const uint16_t *abuf0, const uint16_t *abuf1,
284 int dstW, int yalpha, int uvalpha, int y);
285 void (*yuv2packedX)(struct SwsContext *c,
286 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
287 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
288 const int16_t **alpSrc, uint8_t *dest,
289 long dstW, long dstY);
291 void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
292 long width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
293 void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
294 long width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
295 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
296 const uint8_t *src1, const uint8_t *src2,
297 long width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
298 void (*hyscale_fast)(struct SwsContext *c,
299 int16_t *dst, long dstWidth,
300 const uint8_t *src, int srcW, int xInc);
301 void (*hcscale_fast)(struct SwsContext *c,
302 int16_t *dst, long dstWidth,
303 const uint8_t *src1, const uint8_t *src2,
306 void (*hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW,
307 int xInc, const int16_t *filter, const int16_t *filterPos,
310 void (*lumConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
311 void (*chrConvertRange)(uint16_t *dst, int width); ///< Color range conversion function for chroma planes if needed.
313 int lumSrcOffset; ///< Offset given to luma src pointers passed to horizontal input functions.
314 int chrSrcOffset; ///< Offset given to chroma src pointers passed to horizontal input functions.
315 int alpSrcOffset; ///< Offset given to alpha src pointers passed to horizontal input functions.
317 int needs_hcscale; ///< Set if there are chroma planes to be converted.
320 //FIXME check init (where 0)
322 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
323 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
324 int fullRange, int brightness,
325 int contrast, int saturation);
327 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
328 int brightness, int contrast, int saturation);
329 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
330 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
331 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
332 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
333 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
334 void ff_bfin_get_unscaled_swscale(SwsContext *c);
335 void ff_yuv2packedX_altivec(SwsContext *c,
336 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
337 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
338 uint8_t *dest, int dstW, int dstY);
340 const char *sws_format_name(enum PixelFormat format);
342 //FIXME replace this with something faster
343 #define is16BPS(x) ( \
344 (x)==PIX_FMT_GRAY16BE \
345 || (x)==PIX_FMT_GRAY16LE \
346 || (x)==PIX_FMT_BGR48BE \
347 || (x)==PIX_FMT_BGR48LE \
348 || (x)==PIX_FMT_RGB48BE \
349 || (x)==PIX_FMT_RGB48LE \
350 || (x)==PIX_FMT_YUV420P16LE \
351 || (x)==PIX_FMT_YUV422P16LE \
352 || (x)==PIX_FMT_YUV444P16LE \
353 || (x)==PIX_FMT_YUV420P16BE \
354 || (x)==PIX_FMT_YUV422P16BE \
355 || (x)==PIX_FMT_YUV444P16BE \
357 #define is9_OR_10BPS(x) ( \
358 (x)==PIX_FMT_YUV420P9LE \
359 || (x)==PIX_FMT_YUV420P9BE \
360 || (x)==PIX_FMT_YUV420P10LE \
361 || (x)==PIX_FMT_YUV420P10BE \
363 #define isBE(x) ((x)&1)
364 #define isPlanar8YUV(x) ( \
365 (x)==PIX_FMT_YUV410P \
366 || (x)==PIX_FMT_YUV420P \
367 || (x)==PIX_FMT_YUVA420P \
368 || (x)==PIX_FMT_YUV411P \
369 || (x)==PIX_FMT_YUV422P \
370 || (x)==PIX_FMT_YUV444P \
371 || (x)==PIX_FMT_YUV440P \
372 || (x)==PIX_FMT_NV12 \
373 || (x)==PIX_FMT_NV21 \
375 #define isPlanarYUV(x) ( \
377 || (x)==PIX_FMT_YUV420P9LE \
378 || (x)==PIX_FMT_YUV420P10LE \
379 || (x)==PIX_FMT_YUV420P16LE \
380 || (x)==PIX_FMT_YUV422P16LE \
381 || (x)==PIX_FMT_YUV444P16LE \
382 || (x)==PIX_FMT_YUV420P9BE \
383 || (x)==PIX_FMT_YUV420P10BE \
384 || (x)==PIX_FMT_YUV420P16BE \
385 || (x)==PIX_FMT_YUV422P16BE \
386 || (x)==PIX_FMT_YUV444P16BE \
389 (x)==PIX_FMT_UYVY422 \
390 || (x)==PIX_FMT_YUYV422 \
393 #define isGray(x) ( \
395 || (x)==PIX_FMT_Y400A \
396 || (x)==PIX_FMT_GRAY16BE \
397 || (x)==PIX_FMT_GRAY16LE \
399 #define isGray16(x) ( \
400 (x)==PIX_FMT_GRAY16BE \
401 || (x)==PIX_FMT_GRAY16LE \
403 #define isRGBinInt(x) ( \
404 (x)==PIX_FMT_RGB48BE \
405 || (x)==PIX_FMT_RGB48LE \
406 || (x)==PIX_FMT_RGB32 \
407 || (x)==PIX_FMT_RGB32_1 \
408 || (x)==PIX_FMT_RGB24 \
409 || (x)==PIX_FMT_RGB565BE \
410 || (x)==PIX_FMT_RGB565LE \
411 || (x)==PIX_FMT_RGB555BE \
412 || (x)==PIX_FMT_RGB555LE \
413 || (x)==PIX_FMT_RGB444BE \
414 || (x)==PIX_FMT_RGB444LE \
415 || (x)==PIX_FMT_RGB8 \
416 || (x)==PIX_FMT_RGB4 \
417 || (x)==PIX_FMT_RGB4_BYTE \
418 || (x)==PIX_FMT_MONOBLACK \
419 || (x)==PIX_FMT_MONOWHITE \
421 #define isBGRinInt(x) ( \
422 (x)==PIX_FMT_BGR48BE \
423 || (x)==PIX_FMT_BGR48LE \
424 || (x)==PIX_FMT_BGR32 \
425 || (x)==PIX_FMT_BGR32_1 \
426 || (x)==PIX_FMT_BGR24 \
427 || (x)==PIX_FMT_BGR565BE \
428 || (x)==PIX_FMT_BGR565LE \
429 || (x)==PIX_FMT_BGR555BE \
430 || (x)==PIX_FMT_BGR555LE \
431 || (x)==PIX_FMT_BGR444BE \
432 || (x)==PIX_FMT_BGR444LE \
433 || (x)==PIX_FMT_BGR8 \
434 || (x)==PIX_FMT_BGR4 \
435 || (x)==PIX_FMT_BGR4_BYTE \
436 || (x)==PIX_FMT_MONOBLACK \
437 || (x)==PIX_FMT_MONOWHITE \
439 #define isRGBinBytes(x) ( \
440 (x)==PIX_FMT_RGB48BE \
441 || (x)==PIX_FMT_RGB48LE \
442 || (x)==PIX_FMT_RGBA \
443 || (x)==PIX_FMT_ARGB \
444 || (x)==PIX_FMT_RGB24 \
446 #define isBGRinBytes(x) ( \
447 (x)==PIX_FMT_BGR48BE \
448 || (x)==PIX_FMT_BGR48LE \
449 || (x)==PIX_FMT_BGRA \
450 || (x)==PIX_FMT_ABGR \
451 || (x)==PIX_FMT_BGR24 \
453 #define isAnyRGB(x) ( \
457 #define isALPHA(x) ( \
459 || (x)==PIX_FMT_BGR32_1 \
460 || (x)==PIX_FMT_RGB32 \
461 || (x)==PIX_FMT_RGB32_1 \
462 || (x)==PIX_FMT_Y400A \
463 || (x)==PIX_FMT_YUVA420P \
465 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
467 extern const uint64_t ff_dither4[2];
468 extern const uint64_t ff_dither8[2];
470 extern const AVClass sws_context_class;
473 * Sets c->swScale to an unscaled converter if one exists for the specific
474 * source and destination formats, bit depths, flags, etc.
476 void ff_get_unscaled_swscale(SwsContext *c);
479 * Returns the SWS_CPU_CAPS for the optimized code compiled into swscale.
481 int ff_hardcodedcpuflags(void);
484 * Returns function pointer to fastest main scaler path function depending
485 * on architecture and available optimizations.
487 SwsFunc ff_getSwsFunc(SwsContext *c);
489 #endif /* SWSCALE_SWSCALE_INTERNAL_H */