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"
31 #include "libavutil/log.h"
32 #include "libavutil/pixfmt.h"
34 #define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
36 #define FAST_BGR2YV12 //use 7-bit instead of 15-bit coefficients
38 #define MAX_FILTER_SIZE 256
41 #define ALT32_CORR (-1)
58 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
59 int srcStride[], int srcSliceY, int srcSliceH,
60 uint8_t* dst[], int dstStride[]);
63 * Write one line of horizontally scaled Y/U/V/A to planar output
64 * without any additional vertical scaling (or point-scaling).
66 * @param c SWS scaling context
67 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
68 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
69 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
70 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
71 * @param dest pointer to the 4 output planes (Y/U/V/A)
72 * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
73 * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
75 typedef void (*yuv2planar1_fn) (struct SwsContext *c,
76 const int16_t *lumSrc, const int16_t *chrUSrc,
77 const int16_t *chrVSrc, const int16_t *alpSrc,
78 uint8_t *dest[4], int dstW, int chrDstW);
80 * Write one line of horizontally scaled Y/U/V/A to planar output
81 * with multi-point vertical scaling between input pixels.
83 * @param c SWS scaling context
84 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
85 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
86 * @param lumFilterSize number of vertical luma/alpha input lines to scale
87 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
88 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
89 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
90 * @param chrFilterSize number of vertical chroma input lines to scale
91 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
92 * @param dest pointer to the 4 output planes (Y/U/V/A)
93 * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
94 * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
96 typedef void (*yuv2planarX_fn) (struct SwsContext *c, const int16_t *lumFilter,
97 const int16_t **lumSrc, int lumFilterSize,
98 const int16_t *chrFilter, const int16_t **chrUSrc,
99 const int16_t **chrVSrc, int chrFilterSize,
100 const int16_t **alpSrc, uint8_t *dest[4],
101 int dstW, int chrDstW);
103 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
104 * output without any additional vertical scaling (or point-scaling). Note
105 * that this function may do chroma scaling, see the "uvalpha" argument.
107 * @param c SWS scaling context
108 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
109 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
110 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
111 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
112 * @param dest pointer to the output plane
113 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
114 * to write into dest[]
115 * @param uvalpha chroma scaling coefficient for the second line of chroma
116 * pixels, either 2048 or 0. If 0, one chroma input is used
117 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
118 * is set, it generates 1 output pixel). If 2048, two chroma
119 * input pixels should be averaged for 2 output pixels (this
120 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
121 * @param y vertical line number for this output. This does not need
122 * to be used to calculate the offset in the destination,
123 * but can be used to generate comfort noise using dithering
124 * for some output formats.
126 typedef void (*yuv2packed1_fn) (struct SwsContext *c, const int16_t *lumSrc,
127 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
128 const int16_t *alpSrc, uint8_t *dest,
129 int dstW, int uvalpha, int y);
131 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
132 * output by doing bilinear scaling between two input lines.
134 * @param c SWS scaling context
135 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
136 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
137 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
138 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
139 * @param dest pointer to the output plane
140 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
141 * to write into dest[]
142 * @param yalpha luma/alpha scaling coefficients for the second input line.
143 * The first line's coefficients can be calculated by using
145 * @param uvalpha chroma scaling coefficient for the second input line. The
146 * first line's coefficients can be calculated by using
148 * @param y vertical line number for this output. This does not need
149 * to be used to calculate the offset in the destination,
150 * but can be used to generate comfort noise using dithering
151 * for some output formats.
153 typedef void (*yuv2packed2_fn) (struct SwsContext *c, const int16_t *lumSrc[2],
154 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
155 const int16_t *alpSrc[2], uint8_t *dest,
156 int dstW, int yalpha, int uvalpha, int y);
158 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
159 * output by doing multi-point vertical scaling between input pixels.
161 * @param c SWS scaling context
162 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
163 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
164 * @param lumFilterSize number of vertical luma/alpha input lines to scale
165 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
166 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
167 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
168 * @param chrFilterSize number of vertical chroma input lines to scale
169 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
170 * @param dest pointer to the output plane
171 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
172 * to write into dest[]
173 * @param y vertical line number for this output. This does not need
174 * to be used to calculate the offset in the destination,
175 * but can be used to generate comfort noise using dithering
176 * or some output formats.
178 typedef void (*yuv2packedX_fn) (struct SwsContext *c, const int16_t *lumFilter,
179 const int16_t **lumSrc, int lumFilterSize,
180 const int16_t *chrFilter, const int16_t **chrUSrc,
181 const int16_t **chrVSrc, int chrFilterSize,
182 const int16_t **alpSrc, uint8_t *dest,
185 /* This struct should be aligned on at least a 32-byte boundary. */
186 typedef struct SwsContext {
188 * info on struct for av_log
190 const AVClass *av_class;
193 * Note that src, dst, srcStride, dstStride will be copied in the
194 * sws_scale() wrapper so they can be freely modified here.
197 int srcW; ///< Width of source luma/alpha planes.
198 int srcH; ///< Height of source luma/alpha planes.
199 int dstH; ///< Height of destination luma/alpha planes.
200 int chrSrcW; ///< Width of source chroma planes.
201 int chrSrcH; ///< Height of source chroma planes.
202 int chrDstW; ///< Width of destination chroma planes.
203 int chrDstH; ///< Height of destination chroma planes.
204 int lumXInc, chrXInc;
205 int lumYInc, chrYInc;
206 enum PixelFormat dstFormat; ///< Destination pixel format.
207 enum PixelFormat srcFormat; ///< Source pixel format.
208 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
209 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
211 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
212 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
213 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
214 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
215 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
216 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
217 double param[2]; ///< Input parameters for scaling algorithms that need them.
219 uint32_t pal_yuv[256];
220 uint32_t pal_rgb[256];
223 * @name Scaled horizontal lines ring buffer.
224 * The horizontal scaler keeps just enough scaled lines in a ring buffer
225 * so they may be passed to the vertical scaler. The pointers to the
226 * allocated buffers for each line are duplicated in sequence in the ring
227 * buffer to simplify indexing and avoid wrapping around between lines
228 * inside the vertical scaler code. The wrapping is done before the
229 * vertical scaler is called.
232 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
233 int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
234 int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
235 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
236 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
237 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
238 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
239 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
240 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
241 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
244 uint8_t *formatConvBuffer;
247 * @name Horizontal and vertical filters.
248 * To better understand the following fields, here is a pseudo-code of
249 * their usage in filtering a horizontal line:
251 * for (i = 0; i < width; i++) {
253 * for (j = 0; j < filterSize; j++)
254 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
255 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
260 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
261 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
262 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
263 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
264 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
265 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
266 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
267 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
268 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
269 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
270 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
271 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
274 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
275 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
276 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
277 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
281 int dstY; ///< Last destination vertical line output from last slice.
282 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
283 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
284 uint8_t * table_rV[256];
285 uint8_t * table_gU[256];
287 uint8_t * table_bU[256];
290 int contrast, brightness, saturation; // for sws_getColorspaceDetails
291 int srcColorspaceTable[4];
292 int dstColorspaceTable[4];
293 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
294 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
295 int yuv2rgb_y_offset;
297 int yuv2rgb_v2r_coeff;
298 int yuv2rgb_v2g_coeff;
299 int yuv2rgb_u2g_coeff;
300 int yuv2rgb_u2b_coeff;
302 #define RED_DITHER "0*8"
303 #define GREEN_DITHER "1*8"
304 #define BLUE_DITHER "2*8"
305 #define Y_COEFF "3*8"
306 #define VR_COEFF "4*8"
307 #define UB_COEFF "5*8"
308 #define VG_COEFF "6*8"
309 #define UG_COEFF "7*8"
310 #define Y_OFFSET "8*8"
311 #define U_OFFSET "9*8"
312 #define V_OFFSET "10*8"
313 #define LUM_MMX_FILTER_OFFSET "11*8"
314 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
315 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
316 #define ESP_OFFSET "11*8+4*4*256*2+8"
317 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
318 #define U_TEMP "11*8+4*4*256*2+24"
319 #define V_TEMP "11*8+4*4*256*2+32"
320 #define Y_TEMP "11*8+4*4*256*2+40"
321 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
322 #define UV_OFF_PX "11*8+4*4*256*3+48"
323 #define UV_OFF_BYTE "11*8+4*4*256*3+56"
324 #define DITHER16 "11*8+4*4*256*3+64"
325 #define DITHER32 "11*8+4*4*256*3+80"
327 DECLARE_ALIGNED(8, uint64_t, redDither);
328 DECLARE_ALIGNED(8, uint64_t, greenDither);
329 DECLARE_ALIGNED(8, uint64_t, blueDither);
331 DECLARE_ALIGNED(8, uint64_t, yCoeff);
332 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
333 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
334 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
335 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
336 DECLARE_ALIGNED(8, uint64_t, yOffset);
337 DECLARE_ALIGNED(8, uint64_t, uOffset);
338 DECLARE_ALIGNED(8, uint64_t, vOffset);
339 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
340 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
341 int dstW; ///< Width of destination luma/alpha planes.
342 DECLARE_ALIGNED(8, uint64_t, esp);
343 DECLARE_ALIGNED(8, uint64_t, vRounder);
344 DECLARE_ALIGNED(8, uint64_t, u_temp);
345 DECLARE_ALIGNED(8, uint64_t, v_temp);
346 DECLARE_ALIGNED(8, uint64_t, y_temp);
347 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
348 // alignment of these values is not necessary, but merely here
349 // to maintain the same offset across x8632 and x86-64. Once we
350 // use proper offset macros in the asm, they can be removed.
351 DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px); ///< offset (in pixels) between u and v planes
352 DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte); ///< offset (in bytes) between u and v planes
353 DECLARE_ALIGNED(8, uint16_t, dither16)[8];
354 DECLARE_ALIGNED(8, uint32_t, dither32)[8];
356 const uint8_t *chrDither8, *lumDither8;
359 vector signed short CY;
360 vector signed short CRV;
361 vector signed short CBU;
362 vector signed short CGU;
363 vector signed short CGV;
364 vector signed short OY;
365 vector unsigned short CSHIFT;
366 vector signed short *vYCoeffsBank, *vCCoeffsBank;
370 DECLARE_ALIGNED(4, uint32_t, oy);
371 DECLARE_ALIGNED(4, uint32_t, oc);
372 DECLARE_ALIGNED(4, uint32_t, zero);
373 DECLARE_ALIGNED(4, uint32_t, cy);
374 DECLARE_ALIGNED(4, uint32_t, crv);
375 DECLARE_ALIGNED(4, uint32_t, rmask);
376 DECLARE_ALIGNED(4, uint32_t, cbu);
377 DECLARE_ALIGNED(4, uint32_t, bmask);
378 DECLARE_ALIGNED(4, uint32_t, cgu);
379 DECLARE_ALIGNED(4, uint32_t, cgv);
380 DECLARE_ALIGNED(4, uint32_t, gmask);
384 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
387 /* function pointers for swScale() */
388 yuv2planar1_fn yuv2yuv1;
389 yuv2planarX_fn yuv2yuvX;
390 yuv2packed1_fn yuv2packed1;
391 yuv2packed2_fn yuv2packed2;
392 yuv2packedX_fn yuv2packedX;
394 void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
395 int width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
396 void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
397 int width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
398 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
399 const uint8_t *src1, const uint8_t *src2,
400 int width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
402 * Scale one horizontal line of input data using a bilinear filter
403 * to produce one line of output data. Compared to SwsContext->hScale(),
404 * please take note of the following caveats when using these:
405 * - Scaling is done using only 7bit instead of 14bit coefficients.
406 * - You can use no more than 5 input pixels to produce 4 output
407 * pixels. Therefore, this filter should not be used for downscaling
408 * by more than ~20% in width (because that equals more than 5/4th
409 * downscaling and thus more than 5 pixels input per 4 pixels output).
410 * - In general, bilinear filters create artifacts during downscaling
411 * (even when <20%), because one output pixel will span more than one
412 * input pixel, and thus some pixels will need edges of both neighbor
413 * pixels to interpolate the output pixel. Since you can use at most
414 * two input pixels per output pixel in bilinear scaling, this is
415 * impossible and thus downscaling by any size will create artifacts.
416 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
417 * in SwsContext->flags.
420 void (*hyscale_fast)(struct SwsContext *c,
421 int16_t *dst, int dstWidth,
422 const uint8_t *src, int srcW, int xInc);
423 void (*hcscale_fast)(struct SwsContext *c,
424 int16_t *dst1, int16_t *dst2, int dstWidth,
425 const uint8_t *src1, const uint8_t *src2,
430 * Scale one horizontal line of input data using a filter over the input
431 * lines, to produce one (differently sized) line of output data.
433 * @param dst pointer to destination buffer for horizontally scaled
434 * data. If the scaling depth (SwsContext->scalingBpp) is
435 * 8, data will be 15bpp in 16bits (int16_t) width. If
436 * scaling depth is 16, data will be 19bpp in 32bpp
438 * @param dstW width of destination image
439 * @param src pointer to source data to be scaled. If scaling depth
440 * is 8, this is 8bpp in 8bpp (uint8_t) width. If scaling
441 * depth is 16, this is native depth in 16bbp (uint16_t)
442 * width. In other words, for 9-bit YUV input, this is
443 * 9bpp, for 10-bit YUV input, this is 10bpp, and for
444 * 16-bit RGB or YUV, this is 16bpp.
445 * @param filter filter coefficients to be used per output pixel for
446 * scaling. This contains 14bpp filtering coefficients.
447 * Guaranteed to contain dstW * filterSize entries.
448 * @param filterPos position of the first input pixel to be used for
449 * each output pixel during scaling. Guaranteed to
450 * contain dstW entries.
451 * @param filterSize the number of input coefficients to be used (and
452 * thus the number of input pixels to be used) for
453 * creating a single output pixel. Is aligned to 4
454 * (and input coefficients thus padded with zeroes)
455 * to simplify creating SIMD code.
457 void (*hScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
458 const int16_t *filter, const int16_t *filterPos,
461 void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
462 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
465 * dst[..] = (src[..] << 8) | src[..];
467 void (*scale8To16Rv)(uint16_t *dst, const uint8_t *src, int len);
469 * dst[..] = src[..] >> 4;
471 void (*scale19To15Fw)(int16_t *dst, const int32_t *src, int len);
473 int needs_hcscale; ///< Set if there are chroma planes to be converted.
476 //FIXME check init (where 0)
478 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
479 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
480 int fullRange, int brightness,
481 int contrast, int saturation);
483 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
484 int brightness, int contrast, int saturation);
485 void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
486 int lastInLumBuf, int lastInChrBuf);
488 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
489 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
490 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
491 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
492 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
493 void ff_bfin_get_unscaled_swscale(SwsContext *c);
495 const char *sws_format_name(enum PixelFormat format);
497 //FIXME replace this with something faster
498 #define is16BPS(x) ( \
499 (x)==PIX_FMT_GRAY16BE \
500 || (x)==PIX_FMT_GRAY16LE \
501 || (x)==PIX_FMT_BGR48BE \
502 || (x)==PIX_FMT_BGR48LE \
503 || (x)==PIX_FMT_RGB48BE \
504 || (x)==PIX_FMT_RGB48LE \
505 || (x)==PIX_FMT_YUV420P16LE \
506 || (x)==PIX_FMT_YUV422P16LE \
507 || (x)==PIX_FMT_YUV444P16LE \
508 || (x)==PIX_FMT_YUV420P16BE \
509 || (x)==PIX_FMT_YUV422P16BE \
510 || (x)==PIX_FMT_YUV444P16BE \
512 #define is9_OR_10BPS(x) ( \
513 (x)==PIX_FMT_YUV420P9LE \
514 || (x)==PIX_FMT_YUV420P9BE \
515 || (x)==PIX_FMT_YUV444P9BE \
516 || (x)==PIX_FMT_YUV444P9LE \
517 || (x)==PIX_FMT_YUV422P10BE \
518 || (x)==PIX_FMT_YUV422P10LE \
519 || (x)==PIX_FMT_YUV444P10BE \
520 || (x)==PIX_FMT_YUV444P10LE \
521 || (x)==PIX_FMT_YUV420P10LE \
522 || (x)==PIX_FMT_YUV420P10BE \
524 #define isBE(x) ((x)&1)
525 #define isPlanar8YUV(x) ( \
526 (x)==PIX_FMT_YUV410P \
527 || (x)==PIX_FMT_YUV420P \
528 || (x)==PIX_FMT_YUVA420P \
529 || (x)==PIX_FMT_YUV411P \
530 || (x)==PIX_FMT_YUV422P \
531 || (x)==PIX_FMT_YUV444P \
532 || (x)==PIX_FMT_YUV440P \
533 || (x)==PIX_FMT_NV12 \
534 || (x)==PIX_FMT_NV21 \
536 #define isPlanarYUV(x) ( \
538 || (x)==PIX_FMT_YUV420P9LE \
539 || (x)==PIX_FMT_YUV444P9LE \
540 || (x)==PIX_FMT_YUV420P10LE \
541 || (x)==PIX_FMT_YUV422P10LE \
542 || (x)==PIX_FMT_YUV444P10LE \
543 || (x)==PIX_FMT_YUV420P16LE \
544 || (x)==PIX_FMT_YUV422P16LE \
545 || (x)==PIX_FMT_YUV444P16LE \
546 || (x)==PIX_FMT_YUV420P9BE \
547 || (x)==PIX_FMT_YUV444P9BE \
548 || (x)==PIX_FMT_YUV420P10BE \
549 || (x)==PIX_FMT_YUV422P10BE \
550 || (x)==PIX_FMT_YUV444P10BE \
551 || (x)==PIX_FMT_YUV420P16BE \
552 || (x)==PIX_FMT_YUV422P16BE \
553 || (x)==PIX_FMT_YUV444P16BE \
556 (x)==PIX_FMT_UYVY422 \
557 || (x)==PIX_FMT_YUYV422 \
560 #define isGray(x) ( \
562 || (x)==PIX_FMT_Y400A \
563 || (x)==PIX_FMT_GRAY16BE \
564 || (x)==PIX_FMT_GRAY16LE \
566 #define isGray16(x) ( \
567 (x)==PIX_FMT_GRAY16BE \
568 || (x)==PIX_FMT_GRAY16LE \
570 #define isRGBinInt(x) ( \
571 (x)==PIX_FMT_RGB48BE \
572 || (x)==PIX_FMT_RGB48LE \
573 || (x)==PIX_FMT_RGB32 \
574 || (x)==PIX_FMT_RGB32_1 \
575 || (x)==PIX_FMT_RGB24 \
576 || (x)==PIX_FMT_RGB565BE \
577 || (x)==PIX_FMT_RGB565LE \
578 || (x)==PIX_FMT_RGB555BE \
579 || (x)==PIX_FMT_RGB555LE \
580 || (x)==PIX_FMT_RGB444BE \
581 || (x)==PIX_FMT_RGB444LE \
582 || (x)==PIX_FMT_RGB8 \
583 || (x)==PIX_FMT_RGB4 \
584 || (x)==PIX_FMT_RGB4_BYTE \
585 || (x)==PIX_FMT_MONOBLACK \
586 || (x)==PIX_FMT_MONOWHITE \
588 #define isBGRinInt(x) ( \
589 (x)==PIX_FMT_BGR48BE \
590 || (x)==PIX_FMT_BGR48LE \
591 || (x)==PIX_FMT_BGR32 \
592 || (x)==PIX_FMT_BGR32_1 \
593 || (x)==PIX_FMT_BGR24 \
594 || (x)==PIX_FMT_BGR565BE \
595 || (x)==PIX_FMT_BGR565LE \
596 || (x)==PIX_FMT_BGR555BE \
597 || (x)==PIX_FMT_BGR555LE \
598 || (x)==PIX_FMT_BGR444BE \
599 || (x)==PIX_FMT_BGR444LE \
600 || (x)==PIX_FMT_BGR8 \
601 || (x)==PIX_FMT_BGR4 \
602 || (x)==PIX_FMT_BGR4_BYTE \
603 || (x)==PIX_FMT_MONOBLACK \
604 || (x)==PIX_FMT_MONOWHITE \
606 #define isRGBinBytes(x) ( \
607 (x)==PIX_FMT_RGB48BE \
608 || (x)==PIX_FMT_RGB48LE \
609 || (x)==PIX_FMT_RGBA \
610 || (x)==PIX_FMT_ARGB \
611 || (x)==PIX_FMT_RGB24 \
613 #define isBGRinBytes(x) ( \
614 (x)==PIX_FMT_BGR48BE \
615 || (x)==PIX_FMT_BGR48LE \
616 || (x)==PIX_FMT_BGRA \
617 || (x)==PIX_FMT_ABGR \
618 || (x)==PIX_FMT_BGR24 \
620 #define isAnyRGB(x) ( \
624 #define isALPHA(x) ( \
626 || (x)==PIX_FMT_BGR32_1 \
627 || (x)==PIX_FMT_RGB32 \
628 || (x)==PIX_FMT_RGB32_1 \
629 || (x)==PIX_FMT_Y400A \
630 || (x)==PIX_FMT_YUVA420P \
632 #define isPacked(x) ( \
634 || (x)==PIX_FMT_YUYV422 \
635 || (x)==PIX_FMT_UYVY422 \
636 || (x)==PIX_FMT_Y400A \
639 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
641 extern const uint64_t ff_dither4[2];
642 extern const uint64_t ff_dither8[2];
644 extern const AVClass sws_context_class;
647 * Sets c->swScale to an unscaled converter if one exists for the specific
648 * source and destination formats, bit depths, flags, etc.
650 void ff_get_unscaled_swscale(SwsContext *c);
652 void ff_swscale_get_unscaled_altivec(SwsContext *c);
655 * Returns function pointer to fastest main scaler path function depending
656 * on architecture and available optimizations.
658 SwsFunc ff_getSwsFunc(SwsContext *c);
660 void ff_sws_init_swScale_altivec(SwsContext *c);
661 void ff_sws_init_swScale_mmx(SwsContext *c);
663 #endif /* SWSCALE_SWSCALE_INTERNAL_H */