2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
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
43 #define ALT32_CORR (-1)
60 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
61 int srcStride[], int srcSliceY, int srcSliceH,
62 uint8_t* dst[], int dstStride[]);
64 /* This struct should be aligned on at least a 32-byte boundary. */
65 typedef struct SwsContext {
67 * info on struct for av_log
69 const AVClass *av_class;
72 * Note that src, dst, srcStride, dstStride will be copied in the
73 * sws_scale() wrapper so they can be freely modified here.
76 int srcW; ///< Width of source luma/alpha planes.
77 int srcH; ///< Height of source luma/alpha planes.
78 int dstH; ///< Height of destination luma/alpha planes.
79 int chrSrcW; ///< Width of source chroma planes.
80 int chrSrcH; ///< Height of source chroma planes.
81 int chrDstW; ///< Width of destination chroma planes.
82 int chrDstH; ///< Height of destination chroma planes.
85 enum PixelFormat dstFormat; ///< Destination pixel format.
86 enum PixelFormat srcFormat; ///< Source pixel format.
87 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
88 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
89 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
90 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
91 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
92 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
93 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
94 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
95 double param[2]; ///< Input parameters for scaling algorithms that need them.
97 uint32_t pal_yuv[256];
98 uint32_t pal_rgb[256];
101 * @name Scaled horizontal lines ring buffer.
102 * The horizontal scaler keeps just enough scaled lines in a ring buffer
103 * so they may be passed to the vertical scaler. The pointers to the
104 * allocated buffers for each line are duplicated in sequence in the ring
105 * buffer to simplify indexing and avoid wrapping around between lines
106 * inside the vertical scaler code. The wrapping is done before the
107 * vertical scaler is called.
110 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
111 int16_t **chrPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
112 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
113 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
114 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
115 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
116 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
117 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
118 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
121 uint8_t formatConvBuffer[VOF]; //FIXME dynamic allocation, but we have to change a lot of code for this to be useful
124 * @name Horizontal and vertical filters.
125 * To better understand the following fields, here is a pseudo-code of
126 * their usage in filtering a horizontal line:
128 * for (i = 0; i < width; i++) {
130 * for (j = 0; j < filterSize; j++)
131 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
132 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
137 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
138 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
139 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
140 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
141 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
142 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
143 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
144 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
145 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
146 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
147 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
148 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
151 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
152 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
153 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
154 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
158 int dstY; ///< Last destination vertical line output from last slice.
159 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
160 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
161 uint8_t * table_rV[256];
162 uint8_t * table_gU[256];
164 uint8_t * table_bU[256];
167 int contrast, brightness, saturation; // for sws_getColorspaceDetails
168 int srcColorspaceTable[4];
169 int dstColorspaceTable[4];
170 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
171 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
172 int yuv2rgb_y_offset;
174 int yuv2rgb_v2r_coeff;
175 int yuv2rgb_v2g_coeff;
176 int yuv2rgb_u2g_coeff;
177 int yuv2rgb_u2b_coeff;
179 #define RED_DITHER "0*8"
180 #define GREEN_DITHER "1*8"
181 #define BLUE_DITHER "2*8"
182 #define Y_COEFF "3*8"
183 #define VR_COEFF "4*8"
184 #define UB_COEFF "5*8"
185 #define VG_COEFF "6*8"
186 #define UG_COEFF "7*8"
187 #define Y_OFFSET "8*8"
188 #define U_OFFSET "9*8"
189 #define V_OFFSET "10*8"
190 #define LUM_MMX_FILTER_OFFSET "11*8"
191 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
192 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
193 #define ESP_OFFSET "11*8+4*4*256*2+8"
194 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
195 #define U_TEMP "11*8+4*4*256*2+24"
196 #define V_TEMP "11*8+4*4*256*2+32"
197 #define Y_TEMP "11*8+4*4*256*2+40"
198 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
200 DECLARE_ALIGNED(8, uint64_t, redDither);
201 DECLARE_ALIGNED(8, uint64_t, greenDither);
202 DECLARE_ALIGNED(8, uint64_t, blueDither);
204 DECLARE_ALIGNED(8, uint64_t, yCoeff);
205 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
206 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
207 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
208 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
209 DECLARE_ALIGNED(8, uint64_t, yOffset);
210 DECLARE_ALIGNED(8, uint64_t, uOffset);
211 DECLARE_ALIGNED(8, uint64_t, vOffset);
212 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
213 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
214 int dstW; ///< Width of destination luma/alpha planes.
215 DECLARE_ALIGNED(8, uint64_t, esp);
216 DECLARE_ALIGNED(8, uint64_t, vRounder);
217 DECLARE_ALIGNED(8, uint64_t, u_temp);
218 DECLARE_ALIGNED(8, uint64_t, v_temp);
219 DECLARE_ALIGNED(8, uint64_t, y_temp);
220 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
223 vector signed short CY;
224 vector signed short CRV;
225 vector signed short CBU;
226 vector signed short CGU;
227 vector signed short CGV;
228 vector signed short OY;
229 vector unsigned short CSHIFT;
230 vector signed short *vYCoeffsBank, *vCCoeffsBank;
234 DECLARE_ALIGNED(4, uint32_t, oy);
235 DECLARE_ALIGNED(4, uint32_t, oc);
236 DECLARE_ALIGNED(4, uint32_t, zero);
237 DECLARE_ALIGNED(4, uint32_t, cy);
238 DECLARE_ALIGNED(4, uint32_t, crv);
239 DECLARE_ALIGNED(4, uint32_t, rmask);
240 DECLARE_ALIGNED(4, uint32_t, cbu);
241 DECLARE_ALIGNED(4, uint32_t, bmask);
242 DECLARE_ALIGNED(4, uint32_t, cgu);
243 DECLARE_ALIGNED(4, uint32_t, cgv);
244 DECLARE_ALIGNED(4, uint32_t, gmask);
248 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
251 /* function pointers for swScale() */
252 void (*yuv2nv12X )(struct SwsContext *c,
253 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
254 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
255 uint8_t *dest, uint8_t *uDest,
256 int dstW, int chrDstW, int dstFormat);
257 void (*yuv2yuv1 )(struct SwsContext *c,
258 const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
260 uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
261 long dstW, long chrDstW);
262 void (*yuv2yuvX )(struct SwsContext *c,
263 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
264 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
265 const int16_t **alpSrc,
267 uint8_t *uDest, uint8_t *vDest, uint8_t *aDest,
268 long dstW, long chrDstW);
269 void (*yuv2packed1)(struct SwsContext *c,
270 const uint16_t *buf0,
271 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
272 const uint16_t *abuf0,
274 int dstW, int uvalpha, int dstFormat, int flags, int y);
275 void (*yuv2packed2)(struct SwsContext *c,
276 const uint16_t *buf0, const uint16_t *buf1,
277 const uint16_t *uvbuf0, const uint16_t *uvbuf1,
278 const uint16_t *abuf0, const uint16_t *abuf1,
280 int dstW, int yalpha, int uvalpha, int y);
281 void (*yuv2packedX)(struct SwsContext *c,
282 const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
283 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
284 const int16_t **alpSrc, uint8_t *dest,
285 long dstW, long dstY);
287 void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
288 long width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
289 void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
290 long width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
291 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
292 const uint8_t *src1, const uint8_t *src2,
293 long width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
294 void (*hyscale_fast)(struct SwsContext *c,
295 int16_t *dst, long dstWidth,
296 const uint8_t *src, int srcW, int xInc);
297 void (*hcscale_fast)(struct SwsContext *c,
298 int16_t *dst, long dstWidth,
299 const uint8_t *src1, const uint8_t *src2,
302 void (*hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW,
303 int xInc, const int16_t *filter, const int16_t *filterPos,
306 void (*hScale16)(int16_t *dst, int dstW, const uint16_t *src, int srcW,
307 int xInc, const int16_t *filter, const int16_t *filterPos,
308 long filterSize, int shift);
310 void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
311 void (*chrConvertRange)(int16_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 isNBPS(x) ( \
358 (x)==PIX_FMT_YUV420P9LE \
359 || (x)==PIX_FMT_YUV420P9BE \
360 || (x)==PIX_FMT_YUV420P10LE \
361 || (x)==PIX_FMT_YUV420P10BE \
362 || (x)==PIX_FMT_YUV422P10LE \
363 || (x)==PIX_FMT_YUV422P10BE \
365 #define is9_OR_10BPS isNBPS //for ronald
366 #define isBE(x) ((x)&1)
367 #define isPlanar8YUV(x) ( \
368 (x)==PIX_FMT_YUV410P \
369 || (x)==PIX_FMT_YUV420P \
370 || (x)==PIX_FMT_YUVA420P \
371 || (x)==PIX_FMT_YUV411P \
372 || (x)==PIX_FMT_YUV422P \
373 || (x)==PIX_FMT_YUV444P \
374 || (x)==PIX_FMT_YUV440P \
375 || (x)==PIX_FMT_NV12 \
376 || (x)==PIX_FMT_NV21 \
378 #define isPlanarYUV(x) ( \
380 || (x)==PIX_FMT_YUV420P9LE \
381 || (x)==PIX_FMT_YUV420P10LE \
382 || (x)==PIX_FMT_YUV420P16LE \
383 || (x)==PIX_FMT_YUV422P10LE \
384 || (x)==PIX_FMT_YUV422P16LE \
385 || (x)==PIX_FMT_YUV444P16LE \
386 || (x)==PIX_FMT_YUV420P9BE \
387 || (x)==PIX_FMT_YUV420P10BE \
388 || (x)==PIX_FMT_YUV420P16BE \
389 || (x)==PIX_FMT_YUV422P10BE \
390 || (x)==PIX_FMT_YUV422P16BE \
391 || (x)==PIX_FMT_YUV444P16BE \
394 (x)==PIX_FMT_UYVY422 \
395 || (x)==PIX_FMT_YUYV422 \
398 #define isGray(x) ( \
400 || (x)==PIX_FMT_GRAY8A \
401 || (x)==PIX_FMT_GRAY16BE \
402 || (x)==PIX_FMT_GRAY16LE \
404 #define isGray16(x) ( \
405 (x)==PIX_FMT_GRAY16BE \
406 || (x)==PIX_FMT_GRAY16LE \
408 #define isRGBinInt(x) ( \
409 (x)==PIX_FMT_RGB48BE \
410 || (x)==PIX_FMT_RGB48LE \
411 || (x)==PIX_FMT_RGB32 \
412 || (x)==PIX_FMT_RGB32_1 \
413 || (x)==PIX_FMT_RGB24 \
414 || (x)==PIX_FMT_RGB565BE \
415 || (x)==PIX_FMT_RGB565LE \
416 || (x)==PIX_FMT_RGB555BE \
417 || (x)==PIX_FMT_RGB555LE \
418 || (x)==PIX_FMT_RGB444BE \
419 || (x)==PIX_FMT_RGB444LE \
420 || (x)==PIX_FMT_RGB8 \
421 || (x)==PIX_FMT_RGB4 \
422 || (x)==PIX_FMT_RGB4_BYTE \
423 || (x)==PIX_FMT_MONOBLACK \
424 || (x)==PIX_FMT_MONOWHITE \
426 #define isBGRinInt(x) ( \
427 (x)==PIX_FMT_BGR48BE \
428 || (x)==PIX_FMT_BGR48LE \
429 || (x)==PIX_FMT_BGR32 \
430 || (x)==PIX_FMT_BGR32_1 \
431 || (x)==PIX_FMT_BGR24 \
432 || (x)==PIX_FMT_BGR565BE \
433 || (x)==PIX_FMT_BGR565LE \
434 || (x)==PIX_FMT_BGR555BE \
435 || (x)==PIX_FMT_BGR555LE \
436 || (x)==PIX_FMT_BGR444BE \
437 || (x)==PIX_FMT_BGR444LE \
438 || (x)==PIX_FMT_BGR8 \
439 || (x)==PIX_FMT_BGR4 \
440 || (x)==PIX_FMT_BGR4_BYTE \
441 || (x)==PIX_FMT_MONOBLACK \
442 || (x)==PIX_FMT_MONOWHITE \
444 #define isRGBinBytes(x) ( \
445 (x)==PIX_FMT_RGB48BE \
446 || (x)==PIX_FMT_RGB48LE \
447 || (x)==PIX_FMT_RGBA \
448 || (x)==PIX_FMT_ARGB \
449 || (x)==PIX_FMT_RGB24 \
451 #define isBGRinBytes(x) ( \
452 (x)==PIX_FMT_BGR48BE \
453 || (x)==PIX_FMT_BGR48LE \
454 || (x)==PIX_FMT_BGRA \
455 || (x)==PIX_FMT_ABGR \
456 || (x)==PIX_FMT_BGR24 \
458 #define isAnyRGB(x) ( \
462 #define isALPHA(x) ( \
464 || (x)==PIX_FMT_BGR32_1 \
465 || (x)==PIX_FMT_RGB32 \
466 || (x)==PIX_FMT_RGB32_1 \
467 || (x)==PIX_FMT_PAL8 \
468 || (x)==PIX_FMT_GRAY8A \
469 || (x)==PIX_FMT_YUVA420P \
471 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_GRAY8A)
473 extern const uint64_t ff_dither4[2];
474 extern const uint64_t ff_dither8[2];
476 extern const AVClass sws_context_class;
479 * Sets c->swScale to an unscaled converter if one exists for the specific
480 * source and destination formats, bit depths, flags, etc.
482 void ff_get_unscaled_swscale(SwsContext *c);
485 * Returns function pointer to fastest main scaler path function depending
486 * on architecture and available optimizations.
488 SwsFunc ff_getSwsFunc(SwsContext *c);
490 #endif /* SWSCALE_SWSCALE_INTERNAL_H */