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"
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
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[]);
65 * Write one line of horizontally scaled Y/U/V/A to planar output
66 * without any additional vertical scaling (or point-scaling).
68 * @param c SWS scaling context
69 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
70 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
71 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
72 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
73 * @param dest pointer to the 4 output planes (Y/U/V/A)
74 * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
75 * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
77 typedef void (*yuv2planar1_fn) (struct SwsContext *c,
78 const int16_t *lumSrc, const int16_t *chrUSrc,
79 const int16_t *chrVSrc, const int16_t *alpSrc,
80 uint8_t *dest[4], int dstW, int chrDstW,
81 const uint8_t *lumDither, const uint8_t *chrDither);
83 * Write one line of horizontally scaled Y/U/V/A to planar output
84 * with multi-point vertical scaling between input pixels.
86 * @param c SWS scaling context
87 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
88 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
89 * @param lumFilterSize number of vertical luma/alpha input lines to scale
90 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
91 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
92 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
93 * @param chrFilterSize number of vertical chroma input lines to scale
94 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
95 * @param dest pointer to the 4 output planes (Y/U/V/A)
96 * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
97 * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
99 typedef void (*yuv2planarX_fn) (struct SwsContext *c, const int16_t *lumFilter,
100 const int16_t **lumSrc, int lumFilterSize,
101 const int16_t *chrFilter, const int16_t **chrUSrc,
102 const int16_t **chrVSrc, int chrFilterSize,
103 const int16_t **alpSrc, uint8_t *dest[4],
104 int dstW, int chrDstW, const uint8_t *lumDither, const uint8_t *chrDither);
106 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
107 * output without any additional vertical scaling (or point-scaling). Note
108 * that this function may do chroma scaling, see the "uvalpha" argument.
110 * @param c SWS scaling context
111 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
112 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
113 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
114 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
115 * @param dest pointer to the output plane
116 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
117 * to write into dest[]
118 * @param uvalpha chroma scaling coefficient for the second line of chroma
119 * pixels, either 2048 or 0. If 0, one chroma input is used
120 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
121 * is set, it generates 1 output pixel). If 2048, two chroma
122 * input pixels should be averaged for 2 output pixels (this
123 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
124 * @param y vertical line number for this output. This does not need
125 * to be used to calculate the offset in the destination,
126 * but can be used to generate comfort noise using dithering
127 * for some output formats.
129 typedef void (*yuv2packed1_fn) (struct SwsContext *c, const int16_t *lumSrc,
130 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
131 const int16_t *alpSrc, uint8_t *dest,
132 int dstW, int uvalpha, int y);
134 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
135 * output by doing bilinear scaling between two input lines.
137 * @param c SWS scaling context
138 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
139 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
140 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
141 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
142 * @param dest pointer to the output plane
143 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
144 * to write into dest[]
145 * @param yalpha luma/alpha scaling coefficients for the second input line.
146 * The first line's coefficients can be calculated by using
148 * @param uvalpha chroma scaling coefficient for the second input line. The
149 * first line's coefficients can be calculated by using
151 * @param y vertical line number for this output. This does not need
152 * to be used to calculate the offset in the destination,
153 * but can be used to generate comfort noise using dithering
154 * for some output formats.
156 typedef void (*yuv2packed2_fn) (struct SwsContext *c, const int16_t *lumSrc[2],
157 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
158 const int16_t *alpSrc[2], uint8_t *dest,
159 int dstW, int yalpha, int uvalpha, int y);
161 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
162 * output by doing multi-point vertical scaling between input pixels.
164 * @param c SWS scaling context
165 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
166 * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
167 * @param lumFilterSize number of vertical luma/alpha input lines to scale
168 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
169 * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
170 * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
171 * @param chrFilterSize number of vertical chroma input lines to scale
172 * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
173 * @param dest pointer to the output plane
174 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
175 * to write into dest[]
176 * @param y vertical line number for this output. This does not need
177 * to be used to calculate the offset in the destination,
178 * but can be used to generate comfort noise using dithering
179 * or some output formats.
181 typedef void (*yuv2packedX_fn) (struct SwsContext *c, const int16_t *lumFilter,
182 const int16_t **lumSrc, int lumFilterSize,
183 const int16_t *chrFilter, const int16_t **chrUSrc,
184 const int16_t **chrVSrc, int chrFilterSize,
185 const int16_t **alpSrc, uint8_t *dest,
188 /* This struct should be aligned on at least a 32-byte boundary. */
189 typedef struct SwsContext {
191 * info on struct for av_log
193 const AVClass *av_class;
196 * Note that src, dst, srcStride, dstStride will be copied in the
197 * sws_scale() wrapper so they can be freely modified here.
200 int srcW; ///< Width of source luma/alpha planes.
201 int srcH; ///< Height of source luma/alpha planes.
202 int dstH; ///< Height of destination luma/alpha planes.
203 int chrSrcW; ///< Width of source chroma planes.
204 int chrSrcH; ///< Height of source chroma planes.
205 int chrDstW; ///< Width of destination chroma planes.
206 int chrDstH; ///< Height of destination chroma planes.
207 int lumXInc, chrXInc;
208 int lumYInc, chrYInc;
209 enum PixelFormat dstFormat; ///< Destination pixel format.
210 enum PixelFormat srcFormat; ///< Source pixel format.
211 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
212 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
213 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
214 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
215 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
216 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
217 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
218 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
219 double param[2]; ///< Input parameters for scaling algorithms that need them.
221 uint32_t pal_yuv[256];
222 uint32_t pal_rgb[256];
225 * @name Scaled horizontal lines ring buffer.
226 * The horizontal scaler keeps just enough scaled lines in a ring buffer
227 * so they may be passed to the vertical scaler. The pointers to the
228 * allocated buffers for each line are duplicated in sequence in the ring
229 * buffer to simplify indexing and avoid wrapping around between lines
230 * inside the vertical scaler code. The wrapping is done before the
231 * vertical scaler is called.
234 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
235 int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
236 int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
237 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
238 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
239 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
240 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
241 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
242 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
243 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
246 uint8_t *formatConvBuffer;
249 * @name Horizontal and vertical filters.
250 * To better understand the following fields, here is a pseudo-code of
251 * their usage in filtering a horizontal line:
253 * for (i = 0; i < width; i++) {
255 * for (j = 0; j < filterSize; j++)
256 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
257 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
262 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
263 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
264 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
265 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
266 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
267 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
268 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
269 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
270 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
271 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
272 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
273 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
276 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
277 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
278 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
279 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
283 int dstY; ///< Last destination vertical line output from last slice.
284 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
285 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
286 uint8_t * table_rV[256];
287 uint8_t * table_gU[256];
289 uint8_t * table_bU[256];
292 int contrast, brightness, saturation; // for sws_getColorspaceDetails
293 int srcColorspaceTable[4];
294 int dstColorspaceTable[4];
295 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
296 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
297 int yuv2rgb_y_offset;
299 int yuv2rgb_v2r_coeff;
300 int yuv2rgb_v2g_coeff;
301 int yuv2rgb_u2g_coeff;
302 int yuv2rgb_u2b_coeff;
304 #define RED_DITHER "0*8"
305 #define GREEN_DITHER "1*8"
306 #define BLUE_DITHER "2*8"
307 #define Y_COEFF "3*8"
308 #define VR_COEFF "4*8"
309 #define UB_COEFF "5*8"
310 #define VG_COEFF "6*8"
311 #define UG_COEFF "7*8"
312 #define Y_OFFSET "8*8"
313 #define U_OFFSET "9*8"
314 #define V_OFFSET "10*8"
315 #define LUM_MMX_FILTER_OFFSET "11*8"
316 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
317 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
318 #define ESP_OFFSET "11*8+4*4*256*2+8"
319 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
320 #define U_TEMP "11*8+4*4*256*2+24"
321 #define V_TEMP "11*8+4*4*256*2+32"
322 #define Y_TEMP "11*8+4*4*256*2+40"
323 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
324 #define UV_OFF "11*8+4*4*256*3+48"
325 #define UV_OFFx2 "11*8+4*4*256*3+56"
326 #define DITHER16 "11*8+4*4*256*3+64"
327 #define DITHER32 "11*8+4*4*256*3+64+16"
329 DECLARE_ALIGNED(8, uint64_t, redDither);
330 DECLARE_ALIGNED(8, uint64_t, greenDither);
331 DECLARE_ALIGNED(8, uint64_t, blueDither);
333 DECLARE_ALIGNED(8, uint64_t, yCoeff);
334 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
335 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
336 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
337 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
338 DECLARE_ALIGNED(8, uint64_t, yOffset);
339 DECLARE_ALIGNED(8, uint64_t, uOffset);
340 DECLARE_ALIGNED(8, uint64_t, vOffset);
341 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
342 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
343 int dstW; ///< Width of destination luma/alpha planes.
344 DECLARE_ALIGNED(8, uint64_t, esp);
345 DECLARE_ALIGNED(8, uint64_t, vRounder);
346 DECLARE_ALIGNED(8, uint64_t, u_temp);
347 DECLARE_ALIGNED(8, uint64_t, v_temp);
348 DECLARE_ALIGNED(8, uint64_t, y_temp);
349 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
350 DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
351 DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
352 uint16_t dither16[8];
353 uint32_t dither32[8];
356 vector signed short CY;
357 vector signed short CRV;
358 vector signed short CBU;
359 vector signed short CGU;
360 vector signed short CGV;
361 vector signed short OY;
362 vector unsigned short CSHIFT;
363 vector signed short *vYCoeffsBank, *vCCoeffsBank;
367 DECLARE_ALIGNED(4, uint32_t, oy);
368 DECLARE_ALIGNED(4, uint32_t, oc);
369 DECLARE_ALIGNED(4, uint32_t, zero);
370 DECLARE_ALIGNED(4, uint32_t, cy);
371 DECLARE_ALIGNED(4, uint32_t, crv);
372 DECLARE_ALIGNED(4, uint32_t, rmask);
373 DECLARE_ALIGNED(4, uint32_t, cbu);
374 DECLARE_ALIGNED(4, uint32_t, bmask);
375 DECLARE_ALIGNED(4, uint32_t, cgu);
376 DECLARE_ALIGNED(4, uint32_t, cgv);
377 DECLARE_ALIGNED(4, uint32_t, gmask);
381 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
384 /* function pointers for swScale() */
385 yuv2planar1_fn yuv2yuv1;
386 yuv2planarX_fn yuv2yuvX;
387 yuv2packed1_fn yuv2packed1;
388 yuv2packed2_fn yuv2packed2;
389 yuv2packedX_fn yuv2packedX;
391 void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
392 int width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
393 void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
394 int width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
395 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
396 const uint8_t *src1, const uint8_t *src2,
397 int width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
399 * Scale one horizontal line of input data using a bilinear filter
400 * to produce one line of output data. Compared to SwsContext->hScale(),
401 * please take note of the following caveats when using these:
402 * - Scaling is done using only 7bit instead of 14bit coefficients.
403 * - You can use no more than 5 input pixels to produce 4 output
404 * pixels. Therefore, this filter should not be used for downscaling
405 * by more than ~20% in width (because that equals more than 5/4th
406 * downscaling and thus more than 5 pixels input per 4 pixels output).
407 * - In general, bilinear filters create artifacts during downscaling
408 * (even when <20%), because one output pixel will span more than one
409 * input pixel, and thus some pixels will need edges of both neighbor
410 * pixels to interpolate the output pixel. Since you can use at most
411 * two input pixels per output pixel in bilinear scaling, this is
412 * impossible and thus downscaling by any size will create artifacts.
413 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
414 * in SwsContext->flags.
417 void (*hyscale_fast)(struct SwsContext *c,
418 int16_t *dst, int dstWidth,
419 const uint8_t *src, int srcW, int xInc);
420 void (*hcscale_fast)(struct SwsContext *c,
421 int16_t *dst1, int16_t *dst2, int dstWidth,
422 const uint8_t *src1, const uint8_t *src2,
427 * Scale one horizontal line of input data using a filter over the input
428 * lines, to produce one (differently sized) line of output data.
430 * @param dst pointer to destination buffer for horizontally scaled
431 * data. If the scaling depth (SwsContext->scalingBpp) is
432 * 8, data will be 15bpp in 16bits (int16_t) width. If
433 * scaling depth is 16, data will be 19bpp in 32bpp
435 * @param dstW width of destination image
436 * @param src pointer to source data to be scaled. If scaling depth
437 * is 8, this is 8bpp in 8bpp (uint8_t) width. If scaling
438 * depth is 16, this is native depth in 16bbp (uint16_t)
439 * width. In other words, for 9-bit YUV input, this is
440 * 9bpp, for 10-bit YUV input, this is 10bpp, and for
441 * 16-bit RGB or YUV, this is 16bpp.
442 * @param filter filter coefficients to be used per output pixel for
443 * scaling. This contains 14bpp filtering coefficients.
444 * Guaranteed to contain dstW * filterSize entries.
445 * @param filterPos position of the first input pixel to be used for
446 * each output pixel during scaling. Guaranteed to
447 * contain dstW entries.
448 * @param filterSize the number of input coefficients to be used (and
449 * thus the number of input pixels to be used) for
450 * creating a single output pixel. Is aligned to 4
451 * (and input coefficients thus padded with zeroes)
452 * to simplify creating SIMD code.
454 void (*hScale)(int16_t *dst, int dstW, const uint8_t *src,
455 const int16_t *filter, const int16_t *filterPos,
458 void (*hScale16)(int16_t *dst, int dstW, const uint16_t *src, int srcW,
459 int xInc, const int16_t *filter, const int16_t *filterPos,
460 long filterSize, int shift);
462 void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
463 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
465 int needs_hcscale; ///< Set if there are chroma planes to be converted.
468 //FIXME check init (where 0)
470 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
471 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
472 int fullRange, int brightness,
473 int contrast, int saturation);
475 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
476 int brightness, int contrast, int saturation);
477 void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
478 int lastInLumBuf, int lastInChrBuf);
480 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
481 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
482 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
483 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
484 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
485 void ff_bfin_get_unscaled_swscale(SwsContext *c);
487 #if FF_API_SWS_FORMAT_NAME
489 * @deprecated Use av_get_pix_fmt_name() instead.
492 const char *sws_format_name(enum PixelFormat format);
495 //FIXME replace this with something faster
496 #define is16BPS(x) ( \
497 (x)==PIX_FMT_GRAY16BE \
498 || (x)==PIX_FMT_GRAY16LE \
499 || (x)==PIX_FMT_BGR48BE \
500 || (x)==PIX_FMT_BGR48LE \
501 || (x)==PIX_FMT_RGB48BE \
502 || (x)==PIX_FMT_RGB48LE \
503 || (x)==PIX_FMT_YUV420P16LE \
504 || (x)==PIX_FMT_YUV422P16LE \
505 || (x)==PIX_FMT_YUV444P16LE \
506 || (x)==PIX_FMT_YUV420P16BE \
507 || (x)==PIX_FMT_YUV422P16BE \
508 || (x)==PIX_FMT_YUV444P16BE \
510 #define isNBPS(x) ( \
511 (x)==PIX_FMT_YUV420P9LE \
512 || (x)==PIX_FMT_YUV420P9BE \
513 || (x)==PIX_FMT_YUV444P9BE \
514 || (x)==PIX_FMT_YUV444P9LE \
515 || (x)==PIX_FMT_YUV422P10BE \
516 || (x)==PIX_FMT_YUV422P10LE \
517 || (x)==PIX_FMT_YUV444P10BE \
518 || (x)==PIX_FMT_YUV444P10LE \
519 || (x)==PIX_FMT_YUV420P10LE \
520 || (x)==PIX_FMT_YUV420P10BE \
521 || (x)==PIX_FMT_YUV422P10LE \
522 || (x)==PIX_FMT_YUV422P10BE \
524 #define is9_OR_10BPS isNBPS //for ronald
525 #define isBE(x) ((x)&1)
526 #define isPlanar8YUV(x) ( \
527 (x)==PIX_FMT_YUV410P \
528 || (x)==PIX_FMT_YUV420P \
529 || (x)==PIX_FMT_YUVA420P \
530 || (x)==PIX_FMT_YUV411P \
531 || (x)==PIX_FMT_YUV422P \
532 || (x)==PIX_FMT_YUV444P \
533 || (x)==PIX_FMT_YUV440P \
534 || (x)==PIX_FMT_NV12 \
535 || (x)==PIX_FMT_NV21 \
537 #define isPlanarYUV(x) ( \
539 || (x)==PIX_FMT_YUV420P9LE \
540 || (x)==PIX_FMT_YUV444P9LE \
541 || (x)==PIX_FMT_YUV420P10LE \
542 || (x)==PIX_FMT_YUV422P10LE \
543 || (x)==PIX_FMT_YUV444P10LE \
544 || (x)==PIX_FMT_YUV420P16LE \
545 || (x)==PIX_FMT_YUV422P10LE \
546 || (x)==PIX_FMT_YUV422P16LE \
547 || (x)==PIX_FMT_YUV444P16LE \
548 || (x)==PIX_FMT_YUV420P9BE \
549 || (x)==PIX_FMT_YUV444P9BE \
550 || (x)==PIX_FMT_YUV420P10BE \
551 || (x)==PIX_FMT_YUV422P10BE \
552 || (x)==PIX_FMT_YUV444P10BE \
553 || (x)==PIX_FMT_YUV420P16BE \
554 || (x)==PIX_FMT_YUV422P10BE \
555 || (x)==PIX_FMT_YUV422P16BE \
556 || (x)==PIX_FMT_YUV444P16BE \
559 (x)==PIX_FMT_UYVY422 \
560 || (x)==PIX_FMT_YUYV422 \
563 #define isGray(x) ( \
565 || (x)==PIX_FMT_GRAY8A \
566 || (x)==PIX_FMT_GRAY16BE \
567 || (x)==PIX_FMT_GRAY16LE \
569 #define isGray16(x) ( \
570 (x)==PIX_FMT_GRAY16BE \
571 || (x)==PIX_FMT_GRAY16LE \
573 #define isRGBinInt(x) ( \
574 (x)==PIX_FMT_RGB48BE \
575 || (x)==PIX_FMT_RGB48LE \
576 || (x)==PIX_FMT_RGB32 \
577 || (x)==PIX_FMT_RGB32_1 \
578 || (x)==PIX_FMT_RGB24 \
579 || (x)==PIX_FMT_RGB565BE \
580 || (x)==PIX_FMT_RGB565LE \
581 || (x)==PIX_FMT_RGB555BE \
582 || (x)==PIX_FMT_RGB555LE \
583 || (x)==PIX_FMT_RGB444BE \
584 || (x)==PIX_FMT_RGB444LE \
585 || (x)==PIX_FMT_RGB8 \
586 || (x)==PIX_FMT_RGB4 \
587 || (x)==PIX_FMT_RGB4_BYTE \
588 || (x)==PIX_FMT_MONOBLACK \
589 || (x)==PIX_FMT_MONOWHITE \
591 #define isBGRinInt(x) ( \
592 (x)==PIX_FMT_BGR48BE \
593 || (x)==PIX_FMT_BGR48LE \
594 || (x)==PIX_FMT_BGR32 \
595 || (x)==PIX_FMT_BGR32_1 \
596 || (x)==PIX_FMT_BGR24 \
597 || (x)==PIX_FMT_BGR565BE \
598 || (x)==PIX_FMT_BGR565LE \
599 || (x)==PIX_FMT_BGR555BE \
600 || (x)==PIX_FMT_BGR555LE \
601 || (x)==PIX_FMT_BGR444BE \
602 || (x)==PIX_FMT_BGR444LE \
603 || (x)==PIX_FMT_BGR8 \
604 || (x)==PIX_FMT_BGR4 \
605 || (x)==PIX_FMT_BGR4_BYTE \
606 || (x)==PIX_FMT_MONOBLACK \
607 || (x)==PIX_FMT_MONOWHITE \
609 #define isRGBinBytes(x) ( \
610 (x)==PIX_FMT_RGB48BE \
611 || (x)==PIX_FMT_RGB48LE \
612 || (x)==PIX_FMT_RGBA \
613 || (x)==PIX_FMT_ARGB \
614 || (x)==PIX_FMT_RGB24 \
616 #define isBGRinBytes(x) ( \
617 (x)==PIX_FMT_BGR48BE \
618 || (x)==PIX_FMT_BGR48LE \
619 || (x)==PIX_FMT_BGRA \
620 || (x)==PIX_FMT_ABGR \
621 || (x)==PIX_FMT_BGR24 \
623 #define isAnyRGB(x) ( \
627 #define isALPHA(x) ( \
629 || (x)==PIX_FMT_BGR32_1 \
630 || (x)==PIX_FMT_RGB32 \
631 || (x)==PIX_FMT_RGB32_1 \
632 || (x)==PIX_FMT_PAL8 \
633 || (x)==PIX_FMT_GRAY8A \
634 || (x)==PIX_FMT_YUVA420P \
636 #define isPacked(x) ( \
638 || (x)==PIX_FMT_YUYV422 \
639 || (x)==PIX_FMT_UYVY422 \
640 || (x)==PIX_FMT_Y400A \
643 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_GRAY8A)
645 extern const uint64_t ff_dither4[2];
646 extern const uint64_t ff_dither8[2];
647 extern const uint8_t dithers[8][8][8];
648 extern const uint16_t dither_scale[15][16];
651 extern const AVClass sws_context_class;
654 * Sets c->swScale to an unscaled converter if one exists for the specific
655 * source and destination formats, bit depths, flags, etc.
657 void ff_get_unscaled_swscale(SwsContext *c);
659 void ff_swscale_get_unscaled_altivec(SwsContext *c);
662 * Returns function pointer to fastest main scaler path function depending
663 * on architecture and available optimizations.
665 SwsFunc ff_getSwsFunc(SwsContext *c);
667 void ff_sws_init_swScale_altivec(SwsContext *c);
668 void ff_sws_init_swScale_mmx(SwsContext *c);
670 #endif /* SWSCALE_SWSCALE_INTERNAL_H */