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[]);
64 * Write one line of horizontally scaled data to planar output
65 * without any additional vertical scaling (or point-scaling).
67 * @param src scaled source data, 15bit for 8-10bit output,
68 * 19-bit for 16bit output (in int32_t)
69 * @param dest pointer to the output plane. For >8bit
70 * output, this is in uint16_t
71 * @param dstW width of destination in pixels
72 * @param dither ordered dither array of type int16_t and size 8
73 * @param offset Dither offset
75 typedef void (*yuv2planar1_fn) (const int16_t *src, uint8_t *dest, int dstW,
76 const uint8_t *dither, int offset);
79 * Write one line of horizontally scaled Y/U/V/A to planar output
80 * with multi-point vertical scaling between input pixels.
82 * @param c SWS scaling context
83 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
84 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
85 * 19-bit for 16bit output (in int32_t)
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 8-10bit output,
89 * 19-bit for 16bit output (in int32_t)
90 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
91 * 19-bit for 16bit output (in int32_t)
92 * @param chrFilterSize number of vertical chroma input lines to scale
93 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
94 * 19-bit for 16bit output (in int32_t)
95 * @param dest pointer to the 4 output planes (Y/U/V/A). For >8bit
96 * output, this is in uint16_t
97 * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
98 * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
100 typedef void (*yuv2planarX_fn) (struct SwsContext *c, const int16_t *lumFilter,
101 const int16_t **lumSrc, int lumFilterSize,
102 const int16_t *chrFilter, const int16_t **chrUSrc,
103 const int16_t **chrVSrc, int chrFilterSize,
104 const int16_t **alpSrc, uint8_t *dest[4],
105 int dstW, int chrDstW);
107 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
108 * output without any additional vertical scaling (or point-scaling). Note
109 * that this function may do chroma scaling, see the "uvalpha" argument.
111 * @param c SWS scaling context
112 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
113 * 19-bit for 16bit output (in int32_t)
114 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
115 * 19-bit for 16bit output (in int32_t)
116 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
117 * 19-bit for 16bit output (in int32_t)
118 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
119 * 19-bit for 16bit output (in int32_t)
120 * @param dest pointer to the output plane. For 16bit output, this is
122 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
123 * to write into dest[]
124 * @param uvalpha chroma scaling coefficient for the second line of chroma
125 * pixels, either 2048 or 0. If 0, one chroma input is used
126 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
127 * is set, it generates 1 output pixel). If 2048, two chroma
128 * input pixels should be averaged for 2 output pixels (this
129 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
130 * @param y vertical line number for this output. This does not need
131 * to be used to calculate the offset in the destination,
132 * but can be used to generate comfort noise using dithering
133 * for some output formats.
135 typedef void (*yuv2packed1_fn) (struct SwsContext *c, const int16_t *lumSrc,
136 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
137 const int16_t *alpSrc, uint8_t *dest,
138 int dstW, int uvalpha, int y);
140 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
141 * output by doing bilinear scaling between two input lines.
143 * @param c SWS scaling context
144 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
145 * 19-bit for 16bit output (in int32_t)
146 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
147 * 19-bit for 16bit output (in int32_t)
148 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
149 * 19-bit for 16bit output (in int32_t)
150 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
151 * 19-bit for 16bit output (in int32_t)
152 * @param dest pointer to the output plane. For 16bit output, this is
154 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
155 * to write into dest[]
156 * @param yalpha luma/alpha scaling coefficients for the second input line.
157 * The first line's coefficients can be calculated by using
159 * @param uvalpha chroma scaling coefficient for the second input line. The
160 * first line's coefficients can be calculated by using
162 * @param y vertical line number for this output. This does not need
163 * to be used to calculate the offset in the destination,
164 * but can be used to generate comfort noise using dithering
165 * for some output formats.
167 typedef void (*yuv2packed2_fn) (struct SwsContext *c, const int16_t *lumSrc[2],
168 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
169 const int16_t *alpSrc[2], uint8_t *dest,
170 int dstW, int yalpha, int uvalpha, int y);
172 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
173 * output by doing multi-point vertical scaling between input pixels.
175 * @param c SWS scaling context
176 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
177 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
178 * 19-bit for 16bit output (in int32_t)
179 * @param lumFilterSize number of vertical luma/alpha input lines to scale
180 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
181 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
182 * 19-bit for 16bit output (in int32_t)
183 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
184 * 19-bit for 16bit output (in int32_t)
185 * @param chrFilterSize number of vertical chroma input lines to scale
186 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
187 * 19-bit for 16bit output (in int32_t)
188 * @param dest pointer to the output plane. For 16bit output, this is
190 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
191 * to write into dest[]
192 * @param y vertical line number for this output. This does not need
193 * to be used to calculate the offset in the destination,
194 * but can be used to generate comfort noise using dithering
195 * or some output formats.
197 typedef void (*yuv2packedX_fn) (struct SwsContext *c, const int16_t *lumFilter,
198 const int16_t **lumSrc, int lumFilterSize,
199 const int16_t *chrFilter, const int16_t **chrUSrc,
200 const int16_t **chrVSrc, int chrFilterSize,
201 const int16_t **alpSrc, uint8_t *dest,
204 /* This struct should be aligned on at least a 32-byte boundary. */
205 typedef struct SwsContext {
207 * info on struct for av_log
209 const AVClass *av_class;
212 * Note that src, dst, srcStride, dstStride will be copied in the
213 * sws_scale() wrapper so they can be freely modified here.
216 int srcW; ///< Width of source luma/alpha planes.
217 int srcH; ///< Height of source luma/alpha planes.
218 int dstH; ///< Height of destination luma/alpha planes.
219 int chrSrcW; ///< Width of source chroma planes.
220 int chrSrcH; ///< Height of source chroma planes.
221 int chrDstW; ///< Width of destination chroma planes.
222 int chrDstH; ///< Height of destination chroma planes.
223 int lumXInc, chrXInc;
224 int lumYInc, chrYInc;
225 enum PixelFormat dstFormat; ///< Destination pixel format.
226 enum PixelFormat srcFormat; ///< Source pixel format.
227 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
228 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
230 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
231 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
232 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
233 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
234 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
235 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
236 double param[2]; ///< Input parameters for scaling algorithms that need them.
238 uint32_t pal_yuv[256];
239 uint32_t pal_rgb[256];
242 * @name Scaled horizontal lines ring buffer.
243 * The horizontal scaler keeps just enough scaled lines in a ring buffer
244 * so they may be passed to the vertical scaler. The pointers to the
245 * allocated buffers for each line are duplicated in sequence in the ring
246 * buffer to simplify indexing and avoid wrapping around between lines
247 * inside the vertical scaler code. The wrapping is done before the
248 * vertical scaler is called.
251 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
252 int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
253 int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
254 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
255 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
256 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
257 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
258 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
259 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
260 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
263 uint8_t *formatConvBuffer;
266 * @name Horizontal and vertical filters.
267 * To better understand the following fields, here is a pseudo-code of
268 * their usage in filtering a horizontal line:
270 * for (i = 0; i < width; i++) {
272 * for (j = 0; j < filterSize; j++)
273 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
274 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
279 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
280 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
281 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
282 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
283 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
284 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
285 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
286 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
287 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
288 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
289 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
290 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
293 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
294 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
295 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
296 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
300 int dstY; ///< Last destination vertical line output from last slice.
301 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
302 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
303 uint8_t * table_rV[256];
304 uint8_t * table_gU[256];
306 uint8_t * table_bU[256];
309 int contrast, brightness, saturation; // for sws_getColorspaceDetails
310 int srcColorspaceTable[4];
311 int dstColorspaceTable[4];
312 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
313 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
314 int yuv2rgb_y_offset;
316 int yuv2rgb_v2r_coeff;
317 int yuv2rgb_v2g_coeff;
318 int yuv2rgb_u2g_coeff;
319 int yuv2rgb_u2b_coeff;
321 #define RED_DITHER "0*8"
322 #define GREEN_DITHER "1*8"
323 #define BLUE_DITHER "2*8"
324 #define Y_COEFF "3*8"
325 #define VR_COEFF "4*8"
326 #define UB_COEFF "5*8"
327 #define VG_COEFF "6*8"
328 #define UG_COEFF "7*8"
329 #define Y_OFFSET "8*8"
330 #define U_OFFSET "9*8"
331 #define V_OFFSET "10*8"
332 #define LUM_MMX_FILTER_OFFSET "11*8"
333 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
334 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
335 #define ESP_OFFSET "11*8+4*4*256*2+8"
336 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
337 #define U_TEMP "11*8+4*4*256*2+24"
338 #define V_TEMP "11*8+4*4*256*2+32"
339 #define Y_TEMP "11*8+4*4*256*2+40"
340 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
341 #define UV_OFF_PX "11*8+4*4*256*3+48"
342 #define UV_OFF_BYTE "11*8+4*4*256*3+56"
343 #define DITHER16 "11*8+4*4*256*3+64"
344 #define DITHER32 "11*8+4*4*256*3+80"
346 DECLARE_ALIGNED(8, uint64_t, redDither);
347 DECLARE_ALIGNED(8, uint64_t, greenDither);
348 DECLARE_ALIGNED(8, uint64_t, blueDither);
350 DECLARE_ALIGNED(8, uint64_t, yCoeff);
351 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
352 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
353 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
354 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
355 DECLARE_ALIGNED(8, uint64_t, yOffset);
356 DECLARE_ALIGNED(8, uint64_t, uOffset);
357 DECLARE_ALIGNED(8, uint64_t, vOffset);
358 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
359 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
360 int dstW; ///< Width of destination luma/alpha planes.
361 DECLARE_ALIGNED(8, uint64_t, esp);
362 DECLARE_ALIGNED(8, uint64_t, vRounder);
363 DECLARE_ALIGNED(8, uint64_t, u_temp);
364 DECLARE_ALIGNED(8, uint64_t, v_temp);
365 DECLARE_ALIGNED(8, uint64_t, y_temp);
366 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
367 // alignment of these values is not necessary, but merely here
368 // to maintain the same offset across x8632 and x86-64. Once we
369 // use proper offset macros in the asm, they can be removed.
370 DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px); ///< offset (in pixels) between u and v planes
371 DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte); ///< offset (in bytes) between u and v planes
372 DECLARE_ALIGNED(8, uint16_t, dither16)[8];
373 DECLARE_ALIGNED(8, uint32_t, dither32)[8];
375 const uint8_t *chrDither8, *lumDither8;
378 vector signed short CY;
379 vector signed short CRV;
380 vector signed short CBU;
381 vector signed short CGU;
382 vector signed short CGV;
383 vector signed short OY;
384 vector unsigned short CSHIFT;
385 vector signed short *vYCoeffsBank, *vCCoeffsBank;
389 DECLARE_ALIGNED(4, uint32_t, oy);
390 DECLARE_ALIGNED(4, uint32_t, oc);
391 DECLARE_ALIGNED(4, uint32_t, zero);
392 DECLARE_ALIGNED(4, uint32_t, cy);
393 DECLARE_ALIGNED(4, uint32_t, crv);
394 DECLARE_ALIGNED(4, uint32_t, rmask);
395 DECLARE_ALIGNED(4, uint32_t, cbu);
396 DECLARE_ALIGNED(4, uint32_t, bmask);
397 DECLARE_ALIGNED(4, uint32_t, cgu);
398 DECLARE_ALIGNED(4, uint32_t, cgv);
399 DECLARE_ALIGNED(4, uint32_t, gmask);
403 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
406 /* function pointers for swScale() */
407 yuv2planar1_fn yuv2yuv1;
408 yuv2planarX_fn yuv2yuvX;
409 yuv2packed1_fn yuv2packed1;
410 yuv2packed2_fn yuv2packed2;
411 yuv2packedX_fn yuv2packedX;
413 void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
414 int width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
415 void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
416 int width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
417 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
418 const uint8_t *src1, const uint8_t *src2,
419 int width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
421 * Scale one horizontal line of input data using a bilinear filter
422 * to produce one line of output data. Compared to SwsContext->hScale(),
423 * please take note of the following caveats when using these:
424 * - Scaling is done using only 7bit instead of 14bit coefficients.
425 * - You can use no more than 5 input pixels to produce 4 output
426 * pixels. Therefore, this filter should not be used for downscaling
427 * by more than ~20% in width (because that equals more than 5/4th
428 * downscaling and thus more than 5 pixels input per 4 pixels output).
429 * - In general, bilinear filters create artifacts during downscaling
430 * (even when <20%), because one output pixel will span more than one
431 * input pixel, and thus some pixels will need edges of both neighbor
432 * pixels to interpolate the output pixel. Since you can use at most
433 * two input pixels per output pixel in bilinear scaling, this is
434 * impossible and thus downscaling by any size will create artifacts.
435 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
436 * in SwsContext->flags.
439 void (*hyscale_fast)(struct SwsContext *c,
440 int16_t *dst, int dstWidth,
441 const uint8_t *src, int srcW, int xInc);
442 void (*hcscale_fast)(struct SwsContext *c,
443 int16_t *dst1, int16_t *dst2, int dstWidth,
444 const uint8_t *src1, const uint8_t *src2,
449 * Scale one horizontal line of input data using a filter over the input
450 * lines, to produce one (differently sized) line of output data.
452 * @param dst pointer to destination buffer for horizontally scaled
453 * data. If the number of bits per component of one
454 * destination pixel (SwsContext->dstBpc) is <= 10, data
455 * will be 15bpc in 16bits (int16_t) width. Else (i.e.
456 * SwsContext->dstBpc == 16), data will be 19bpc in
457 * 32bits (int32_t) width.
458 * @param dstW width of destination image
459 * @param src pointer to source data to be scaled. If the number of
460 * bits per component of a source pixel (SwsContext->srcBpc)
461 * is 8, this is 8bpc in 8bits (uint8_t) width. Else
462 * (i.e. SwsContext->dstBpc > 8), this is native depth
463 * in 16bits (uint16_t) width. In other words, for 9-bit
464 * YUV input, this is 9bpc, for 10-bit YUV input, this is
465 * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
466 * @param filter filter coefficients to be used per output pixel for
467 * scaling. This contains 14bpp filtering coefficients.
468 * Guaranteed to contain dstW * filterSize entries.
469 * @param filterPos position of the first input pixel to be used for
470 * each output pixel during scaling. Guaranteed to
471 * contain dstW entries.
472 * @param filterSize the number of input coefficients to be used (and
473 * thus the number of input pixels to be used) for
474 * creating a single output pixel. Is aligned to 4
475 * (and input coefficients thus padded with zeroes)
476 * to simplify creating SIMD code.
479 void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
480 const int16_t *filter, const int16_t *filterPos,
482 void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
483 const int16_t *filter, const int16_t *filterPos,
487 void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
488 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
490 int needs_hcscale; ///< Set if there are chroma planes to be converted.
493 //FIXME check init (where 0)
495 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
496 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
497 int fullRange, int brightness,
498 int contrast, int saturation);
500 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
501 int brightness, int contrast, int saturation);
502 void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
503 int lastInLumBuf, int lastInChrBuf);
505 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
506 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
507 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
508 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
509 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
510 void ff_bfin_get_unscaled_swscale(SwsContext *c);
512 const char *sws_format_name(enum PixelFormat format);
514 //FIXME replace this with something faster
515 #define is16BPS(x) ( \
516 (x)==PIX_FMT_GRAY16BE \
517 || (x)==PIX_FMT_GRAY16LE \
518 || (x)==PIX_FMT_BGR48BE \
519 || (x)==PIX_FMT_BGR48LE \
520 || (x)==PIX_FMT_RGB48BE \
521 || (x)==PIX_FMT_RGB48LE \
522 || (x)==PIX_FMT_YUV420P16LE \
523 || (x)==PIX_FMT_YUV422P16LE \
524 || (x)==PIX_FMT_YUV444P16LE \
525 || (x)==PIX_FMT_YUV420P16BE \
526 || (x)==PIX_FMT_YUV422P16BE \
527 || (x)==PIX_FMT_YUV444P16BE \
529 #define is9_OR_10BPS(x) ( \
530 (x)==PIX_FMT_YUV420P9LE \
531 || (x)==PIX_FMT_YUV420P9BE \
532 || (x)==PIX_FMT_YUV422P9LE \
533 || (x)==PIX_FMT_YUV422P9BE \
534 || (x)==PIX_FMT_YUV444P9BE \
535 || (x)==PIX_FMT_YUV444P9LE \
536 || (x)==PIX_FMT_YUV422P10BE \
537 || (x)==PIX_FMT_YUV422P10LE \
538 || (x)==PIX_FMT_YUV444P10BE \
539 || (x)==PIX_FMT_YUV444P10LE \
540 || (x)==PIX_FMT_YUV420P10LE \
541 || (x)==PIX_FMT_YUV420P10BE \
543 #define isBE(x) ((x)&1)
544 #define isPlanar8YUV(x) ( \
545 (x)==PIX_FMT_YUV410P \
546 || (x)==PIX_FMT_YUV420P \
547 || (x)==PIX_FMT_YUVA420P \
548 || (x)==PIX_FMT_YUV411P \
549 || (x)==PIX_FMT_YUV422P \
550 || (x)==PIX_FMT_YUV444P \
551 || (x)==PIX_FMT_YUV440P \
552 || (x)==PIX_FMT_NV12 \
553 || (x)==PIX_FMT_NV21 \
555 #define isPlanarYUV(x) ( \
557 || (x)==PIX_FMT_YUV420P9LE \
558 || (x)==PIX_FMT_YUV422P9LE \
559 || (x)==PIX_FMT_YUV444P9LE \
560 || (x)==PIX_FMT_YUV420P10LE \
561 || (x)==PIX_FMT_YUV422P10LE \
562 || (x)==PIX_FMT_YUV444P10LE \
563 || (x)==PIX_FMT_YUV420P16LE \
564 || (x)==PIX_FMT_YUV422P16LE \
565 || (x)==PIX_FMT_YUV444P16LE \
566 || (x)==PIX_FMT_YUV420P9BE \
567 || (x)==PIX_FMT_YUV422P9BE \
568 || (x)==PIX_FMT_YUV444P9BE \
569 || (x)==PIX_FMT_YUV420P10BE \
570 || (x)==PIX_FMT_YUV422P10BE \
571 || (x)==PIX_FMT_YUV444P10BE \
572 || (x)==PIX_FMT_YUV420P16BE \
573 || (x)==PIX_FMT_YUV422P16BE \
574 || (x)==PIX_FMT_YUV444P16BE \
577 (x)==PIX_FMT_UYVY422 \
578 || (x)==PIX_FMT_YUYV422 \
581 #define isGray(x) ( \
583 || (x)==PIX_FMT_Y400A \
584 || (x)==PIX_FMT_GRAY16BE \
585 || (x)==PIX_FMT_GRAY16LE \
587 #define isGray16(x) ( \
588 (x)==PIX_FMT_GRAY16BE \
589 || (x)==PIX_FMT_GRAY16LE \
591 #define isRGBinInt(x) ( \
592 (x)==PIX_FMT_RGB48BE \
593 || (x)==PIX_FMT_RGB48LE \
594 || (x)==PIX_FMT_RGB32 \
595 || (x)==PIX_FMT_RGB32_1 \
596 || (x)==PIX_FMT_RGB24 \
597 || (x)==PIX_FMT_RGB565BE \
598 || (x)==PIX_FMT_RGB565LE \
599 || (x)==PIX_FMT_RGB555BE \
600 || (x)==PIX_FMT_RGB555LE \
601 || (x)==PIX_FMT_RGB444BE \
602 || (x)==PIX_FMT_RGB444LE \
603 || (x)==PIX_FMT_RGB8 \
604 || (x)==PIX_FMT_RGB4 \
605 || (x)==PIX_FMT_RGB4_BYTE \
606 || (x)==PIX_FMT_MONOBLACK \
607 || (x)==PIX_FMT_MONOWHITE \
609 #define isBGRinInt(x) ( \
610 (x)==PIX_FMT_BGR48BE \
611 || (x)==PIX_FMT_BGR48LE \
612 || (x)==PIX_FMT_BGR32 \
613 || (x)==PIX_FMT_BGR32_1 \
614 || (x)==PIX_FMT_BGR24 \
615 || (x)==PIX_FMT_BGR565BE \
616 || (x)==PIX_FMT_BGR565LE \
617 || (x)==PIX_FMT_BGR555BE \
618 || (x)==PIX_FMT_BGR555LE \
619 || (x)==PIX_FMT_BGR444BE \
620 || (x)==PIX_FMT_BGR444LE \
621 || (x)==PIX_FMT_BGR8 \
622 || (x)==PIX_FMT_BGR4 \
623 || (x)==PIX_FMT_BGR4_BYTE \
624 || (x)==PIX_FMT_MONOBLACK \
625 || (x)==PIX_FMT_MONOWHITE \
627 #define isRGBinBytes(x) ( \
628 (x)==PIX_FMT_RGB48BE \
629 || (x)==PIX_FMT_RGB48LE \
630 || (x)==PIX_FMT_RGBA \
631 || (x)==PIX_FMT_ARGB \
632 || (x)==PIX_FMT_RGB24 \
634 #define isBGRinBytes(x) ( \
635 (x)==PIX_FMT_BGR48BE \
636 || (x)==PIX_FMT_BGR48LE \
637 || (x)==PIX_FMT_BGRA \
638 || (x)==PIX_FMT_ABGR \
639 || (x)==PIX_FMT_BGR24 \
641 #define isAnyRGB(x) ( \
645 #define isALPHA(x) ( \
647 || (x)==PIX_FMT_BGR32_1 \
648 || (x)==PIX_FMT_RGB32 \
649 || (x)==PIX_FMT_RGB32_1 \
650 || (x)==PIX_FMT_Y400A \
651 || (x)==PIX_FMT_YUVA420P \
653 #define isPacked(x) ( \
655 || (x)==PIX_FMT_YUYV422 \
656 || (x)==PIX_FMT_UYVY422 \
657 || (x)==PIX_FMT_Y400A \
660 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
662 extern const uint64_t ff_dither4[2];
663 extern const uint64_t ff_dither8[2];
665 extern const AVClass sws_context_class;
668 * Sets c->swScale to an unscaled converter if one exists for the specific
669 * source and destination formats, bit depths, flags, etc.
671 void ff_get_unscaled_swscale(SwsContext *c);
673 void ff_swscale_get_unscaled_altivec(SwsContext *c);
676 * Returns function pointer to fastest main scaler path function depending
677 * on architecture and available optimizations.
679 SwsFunc ff_getSwsFunc(SwsContext *c);
681 void ff_sws_init_swScale_altivec(SwsContext *c);
682 void ff_sws_init_swScale_mmx(SwsContext *c);
684 #endif /* SWSCALE_SWSCALE_INTERNAL_H */