2 * Copyright (C) 2001-2011 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/common.h"
32 #include "libavutil/log.h"
33 #include "libavutil/pixfmt.h"
34 #include "libavutil/pixdesc.h"
36 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
38 #define YUVRGB_TABLE_HEADROOM 128
40 #define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
42 #define MAX_FILTER_SIZE 256
47 #define ALT32_CORR (-1)
64 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
65 int srcStride[], int srcSliceY, int srcSliceH,
66 uint8_t *dst[], int dstStride[]);
69 * Write one line of horizontally scaled data to planar output
70 * without any additional vertical scaling (or point-scaling).
72 * @param src scaled source data, 15bit for 8-10bit output,
73 * 19-bit for 16bit output (in int32_t)
74 * @param dest pointer to the output plane. For >8bit
75 * output, this is in uint16_t
76 * @param dstW width of destination in pixels
77 * @param dither ordered dither array of type int16_t and size 8
78 * @param offset Dither offset
80 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
81 const uint8_t *dither, int offset);
84 * Write one line of horizontally scaled data to planar output
85 * with multi-point vertical scaling between input pixels.
87 * @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
88 * @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
89 * 19-bit for 16bit output (in int32_t)
90 * @param filterSize number of vertical input lines to scale
91 * @param dest pointer to output plane. For >8bit
92 * output, this is in uint16_t
93 * @param dstW width of destination pixels
94 * @param offset Dither offset
96 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
97 const int16_t **src, uint8_t *dest, int dstW,
98 const uint8_t *dither, int offset);
101 * Write one line of horizontally scaled chroma to interleaved output
102 * with multi-point vertical scaling between input pixels.
104 * @param c SWS scaling context
105 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
106 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
107 * 19-bit for 16bit output (in int32_t)
108 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
109 * 19-bit for 16bit output (in int32_t)
110 * @param chrFilterSize number of vertical chroma input lines to scale
111 * @param dest pointer to the output plane. For >8bit
112 * output, this is in uint16_t
113 * @param dstW width of chroma planes
115 typedef void (*yuv2interleavedX_fn)(struct SwsContext *c,
116 const int16_t *chrFilter,
118 const int16_t **chrUSrc,
119 const int16_t **chrVSrc,
120 uint8_t *dest, int dstW);
123 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
124 * output without any additional vertical scaling (or point-scaling). Note
125 * that this function may do chroma scaling, see the "uvalpha" argument.
127 * @param c SWS scaling context
128 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
129 * 19-bit for 16bit output (in int32_t)
130 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
131 * 19-bit for 16bit output (in int32_t)
132 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
133 * 19-bit for 16bit output (in int32_t)
134 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
135 * 19-bit for 16bit output (in int32_t)
136 * @param dest pointer to the output plane. For 16bit output, this is
138 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
139 * to write into dest[]
140 * @param uvalpha chroma scaling coefficient for the second line of chroma
141 * pixels, either 2048 or 0. If 0, one chroma input is used
142 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
143 * is set, it generates 1 output pixel). If 2048, two chroma
144 * input pixels should be averaged for 2 output pixels (this
145 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
146 * @param y vertical line number for this output. This does not need
147 * to be used to calculate the offset in the destination,
148 * but can be used to generate comfort noise using dithering
149 * for some output formats.
151 typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
152 const int16_t *chrUSrc[2],
153 const int16_t *chrVSrc[2],
154 const int16_t *alpSrc, uint8_t *dest,
155 int dstW, int uvalpha, int y);
157 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
158 * output by doing bilinear scaling between two input lines.
160 * @param c SWS scaling context
161 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
162 * 19-bit for 16bit output (in int32_t)
163 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
164 * 19-bit for 16bit output (in int32_t)
165 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
166 * 19-bit for 16bit output (in int32_t)
167 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
168 * 19-bit for 16bit output (in int32_t)
169 * @param dest pointer to the output plane. For 16bit output, this is
171 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
172 * to write into dest[]
173 * @param yalpha luma/alpha scaling coefficients for the second input line.
174 * The first line's coefficients can be calculated by using
176 * @param uvalpha chroma scaling coefficient for the second input line. The
177 * first line's coefficients can be calculated by using
179 * @param y vertical line number for this output. This does not need
180 * to be used to calculate the offset in the destination,
181 * but can be used to generate comfort noise using dithering
182 * for some output formats.
184 typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
185 const int16_t *chrUSrc[2],
186 const int16_t *chrVSrc[2],
187 const int16_t *alpSrc[2],
189 int dstW, int yalpha, int uvalpha, int y);
191 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
192 * output by doing multi-point vertical scaling between input pixels.
194 * @param c SWS scaling context
195 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
196 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
197 * 19-bit for 16bit output (in int32_t)
198 * @param lumFilterSize number of vertical luma/alpha input lines to scale
199 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
200 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
201 * 19-bit for 16bit output (in int32_t)
202 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
203 * 19-bit for 16bit output (in int32_t)
204 * @param chrFilterSize number of vertical chroma input lines to scale
205 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
206 * 19-bit for 16bit output (in int32_t)
207 * @param dest pointer to the output plane. For 16bit output, this is
209 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
210 * to write into dest[]
211 * @param y vertical line number for this output. This does not need
212 * to be used to calculate the offset in the destination,
213 * but can be used to generate comfort noise using dithering
214 * or some output formats.
216 typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
217 const int16_t **lumSrc, int lumFilterSize,
218 const int16_t *chrFilter,
219 const int16_t **chrUSrc,
220 const int16_t **chrVSrc, int chrFilterSize,
221 const int16_t **alpSrc, uint8_t *dest,
224 /* This struct should be aligned on at least a 32-byte boundary. */
225 typedef struct SwsContext {
227 * info on struct for av_log
229 const AVClass *av_class;
232 * Note that src, dst, srcStride, dstStride will be copied in the
233 * sws_scale() wrapper so they can be freely modified here.
236 int srcW; ///< Width of source luma/alpha planes.
237 int srcH; ///< Height of source luma/alpha planes.
238 int dstH; ///< Height of destination luma/alpha planes.
239 int chrSrcW; ///< Width of source chroma planes.
240 int chrSrcH; ///< Height of source chroma planes.
241 int chrDstW; ///< Width of destination chroma planes.
242 int chrDstH; ///< Height of destination chroma planes.
243 int lumXInc, chrXInc;
244 int lumYInc, chrYInc;
245 enum PixelFormat dstFormat; ///< Destination pixel format.
246 enum PixelFormat srcFormat; ///< Source pixel format.
247 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
248 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
250 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
251 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
252 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
253 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
254 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
255 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
256 double param[2]; ///< Input parameters for scaling algorithms that need them.
258 uint32_t pal_yuv[256];
259 uint32_t pal_rgb[256];
262 * @name Scaled horizontal lines ring buffer.
263 * The horizontal scaler keeps just enough scaled lines in a ring buffer
264 * so they may be passed to the vertical scaler. The pointers to the
265 * allocated buffers for each line are duplicated in sequence in the ring
266 * buffer to simplify indexing and avoid wrapping around between lines
267 * inside the vertical scaler code. The wrapping is done before the
268 * vertical scaler is called.
271 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
272 int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
273 int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
274 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
275 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
276 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
277 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
278 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
279 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
280 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
283 uint8_t *formatConvBuffer;
286 * @name Horizontal and vertical filters.
287 * To better understand the following fields, here is a pseudo-code of
288 * their usage in filtering a horizontal line:
290 * for (i = 0; i < width; i++) {
292 * for (j = 0; j < filterSize; j++)
293 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
294 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
299 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
300 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
301 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
302 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
303 int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
304 int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
305 int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
306 int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
307 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
308 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
309 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
310 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
313 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
314 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
315 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
316 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
320 int dstY; ///< Last destination vertical line output from last slice.
321 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
322 void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
323 uint8_t *table_rV[256 + 2*YUVRGB_TABLE_HEADROOM];
324 uint8_t *table_gU[256 + 2*YUVRGB_TABLE_HEADROOM];
325 int table_gV[256 + 2*YUVRGB_TABLE_HEADROOM];
326 uint8_t *table_bU[256 + 2*YUVRGB_TABLE_HEADROOM];
329 int contrast, brightness, saturation; // for sws_getColorspaceDetails
330 int srcColorspaceTable[4];
331 int dstColorspaceTable[4];
332 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
333 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
336 int yuv2rgb_y_offset;
338 int yuv2rgb_v2r_coeff;
339 int yuv2rgb_v2g_coeff;
340 int yuv2rgb_u2g_coeff;
341 int yuv2rgb_u2b_coeff;
343 #define RED_DITHER "0*8"
344 #define GREEN_DITHER "1*8"
345 #define BLUE_DITHER "2*8"
346 #define Y_COEFF "3*8"
347 #define VR_COEFF "4*8"
348 #define UB_COEFF "5*8"
349 #define VG_COEFF "6*8"
350 #define UG_COEFF "7*8"
351 #define Y_OFFSET "8*8"
352 #define U_OFFSET "9*8"
353 #define V_OFFSET "10*8"
354 #define LUM_MMX_FILTER_OFFSET "11*8"
355 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
356 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
357 #define ESP_OFFSET "11*8+4*4*256*2+8"
358 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
359 #define U_TEMP "11*8+4*4*256*2+24"
360 #define V_TEMP "11*8+4*4*256*2+32"
361 #define Y_TEMP "11*8+4*4*256*2+40"
362 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
363 #define UV_OFF_PX "11*8+4*4*256*3+48"
364 #define UV_OFF_BYTE "11*8+4*4*256*3+56"
365 #define DITHER16 "11*8+4*4*256*3+64"
366 #define DITHER32 "11*8+4*4*256*3+80"
368 DECLARE_ALIGNED(8, uint64_t, redDither);
369 DECLARE_ALIGNED(8, uint64_t, greenDither);
370 DECLARE_ALIGNED(8, uint64_t, blueDither);
372 DECLARE_ALIGNED(8, uint64_t, yCoeff);
373 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
374 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
375 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
376 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
377 DECLARE_ALIGNED(8, uint64_t, yOffset);
378 DECLARE_ALIGNED(8, uint64_t, uOffset);
379 DECLARE_ALIGNED(8, uint64_t, vOffset);
380 int32_t lumMmxFilter[4 * MAX_FILTER_SIZE];
381 int32_t chrMmxFilter[4 * MAX_FILTER_SIZE];
382 int dstW; ///< Width of destination luma/alpha planes.
383 DECLARE_ALIGNED(8, uint64_t, esp);
384 DECLARE_ALIGNED(8, uint64_t, vRounder);
385 DECLARE_ALIGNED(8, uint64_t, u_temp);
386 DECLARE_ALIGNED(8, uint64_t, v_temp);
387 DECLARE_ALIGNED(8, uint64_t, y_temp);
388 int32_t alpMmxFilter[4 * MAX_FILTER_SIZE];
389 // alignment of these values is not necessary, but merely here
390 // to maintain the same offset across x8632 and x86-64. Once we
391 // use proper offset macros in the asm, they can be removed.
392 DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
393 DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
394 DECLARE_ALIGNED(8, uint16_t, dither16)[8];
395 DECLARE_ALIGNED(8, uint32_t, dither32)[8];
397 const uint8_t *chrDither8, *lumDither8;
400 vector signed short CY;
401 vector signed short CRV;
402 vector signed short CBU;
403 vector signed short CGU;
404 vector signed short CGV;
405 vector signed short OY;
406 vector unsigned short CSHIFT;
407 vector signed short *vYCoeffsBank, *vCCoeffsBank;
411 DECLARE_ALIGNED(4, uint32_t, oy);
412 DECLARE_ALIGNED(4, uint32_t, oc);
413 DECLARE_ALIGNED(4, uint32_t, zero);
414 DECLARE_ALIGNED(4, uint32_t, cy);
415 DECLARE_ALIGNED(4, uint32_t, crv);
416 DECLARE_ALIGNED(4, uint32_t, rmask);
417 DECLARE_ALIGNED(4, uint32_t, cbu);
418 DECLARE_ALIGNED(4, uint32_t, bmask);
419 DECLARE_ALIGNED(4, uint32_t, cgu);
420 DECLARE_ALIGNED(4, uint32_t, cgv);
421 DECLARE_ALIGNED(4, uint32_t, gmask);
425 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
429 /* function pointers for swScale() */
430 yuv2planar1_fn yuv2plane1;
431 yuv2planarX_fn yuv2planeX;
432 yuv2interleavedX_fn yuv2nv12cX;
433 yuv2packed1_fn yuv2packed1;
434 yuv2packed2_fn yuv2packed2;
435 yuv2packedX_fn yuv2packedX;
437 /// Unscaled conversion of luma plane to YV12 for horizontal scaler.
438 void (*lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
439 int width, uint32_t *pal);
440 /// Unscaled conversion of alpha plane to YV12 for horizontal scaler.
441 void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
442 int width, uint32_t *pal);
443 /// Unscaled conversion of chroma planes to YV12 for horizontal scaler.
444 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
445 const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
446 int width, uint32_t *pal);
449 * Functions to read planar input, such as planar RGB, and convert
450 * internally to Y/UV.
453 void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width);
454 void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
459 * Scale one horizontal line of input data using a bilinear filter
460 * to produce one line of output data. Compared to SwsContext->hScale(),
461 * please take note of the following caveats when using these:
462 * - Scaling is done using only 7bit instead of 14bit coefficients.
463 * - You can use no more than 5 input pixels to produce 4 output
464 * pixels. Therefore, this filter should not be used for downscaling
465 * by more than ~20% in width (because that equals more than 5/4th
466 * downscaling and thus more than 5 pixels input per 4 pixels output).
467 * - In general, bilinear filters create artifacts during downscaling
468 * (even when <20%), because one output pixel will span more than one
469 * input pixel, and thus some pixels will need edges of both neighbor
470 * pixels to interpolate the output pixel. Since you can use at most
471 * two input pixels per output pixel in bilinear scaling, this is
472 * impossible and thus downscaling by any size will create artifacts.
473 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
474 * in SwsContext->flags.
477 void (*hyscale_fast)(struct SwsContext *c,
478 int16_t *dst, int dstWidth,
479 const uint8_t *src, int srcW, int xInc);
480 void (*hcscale_fast)(struct SwsContext *c,
481 int16_t *dst1, int16_t *dst2, int dstWidth,
482 const uint8_t *src1, const uint8_t *src2,
487 * Scale one horizontal line of input data using a filter over the input
488 * lines, to produce one (differently sized) line of output data.
490 * @param dst pointer to destination buffer for horizontally scaled
491 * data. If the number of bits per component of one
492 * destination pixel (SwsContext->dstBpc) is <= 10, data
493 * will be 15bpc in 16bits (int16_t) width. Else (i.e.
494 * SwsContext->dstBpc == 16), data will be 19bpc in
495 * 32bits (int32_t) width.
496 * @param dstW width of destination image
497 * @param src pointer to source data to be scaled. If the number of
498 * bits per component of a source pixel (SwsContext->srcBpc)
499 * is 8, this is 8bpc in 8bits (uint8_t) width. Else
500 * (i.e. SwsContext->dstBpc > 8), this is native depth
501 * in 16bits (uint16_t) width. In other words, for 9-bit
502 * YUV input, this is 9bpc, for 10-bit YUV input, this is
503 * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
504 * @param filter filter coefficients to be used per output pixel for
505 * scaling. This contains 14bpp filtering coefficients.
506 * Guaranteed to contain dstW * filterSize entries.
507 * @param filterPos position of the first input pixel to be used for
508 * each output pixel during scaling. Guaranteed to
509 * contain dstW entries.
510 * @param filterSize the number of input coefficients to be used (and
511 * thus the number of input pixels to be used) for
512 * creating a single output pixel. Is aligned to 4
513 * (and input coefficients thus padded with zeroes)
514 * to simplify creating SIMD code.
517 void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
518 const uint8_t *src, const int16_t *filter,
519 const int32_t *filterPos, int filterSize);
520 void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
521 const uint8_t *src, const int16_t *filter,
522 const int32_t *filterPos, int filterSize);
525 /// Color range conversion function for luma plane if needed.
526 void (*lumConvertRange)(int16_t *dst, int width);
527 /// Color range conversion function for chroma planes if needed.
528 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
530 int needs_hcscale; ///< Set if there are chroma planes to be converted.
532 //FIXME check init (where 0)
534 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
535 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
536 int fullRange, int brightness,
537 int contrast, int saturation);
539 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
540 int brightness, int contrast, int saturation);
541 void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
542 int lastInLumBuf, int lastInChrBuf);
544 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
545 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
546 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
547 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
548 void ff_bfin_get_unscaled_swscale(SwsContext *c);
550 #if FF_API_SWS_FORMAT_NAME
552 * @deprecated Use av_get_pix_fmt_name() instead.
555 const char *sws_format_name(enum PixelFormat format);
559 (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15)
561 #define is9_OR_10BPS(x) \
562 (av_pix_fmt_descriptors[x].comp[0].depth_minus1 >= 8 && \
563 av_pix_fmt_descriptors[x].comp[0].depth_minus1 <= 13)
565 #define isNBPS(x) is9_OR_10BPS(x)
568 (av_pix_fmt_descriptors[x].flags & PIX_FMT_BE)
571 (!(av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB) && \
572 av_pix_fmt_descriptors[x].nb_components >= 2)
574 #define isPlanarYUV(x) \
575 ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR) && \
579 (av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB)
582 (!(av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) && \
583 av_pix_fmt_descriptors[x].nb_components <= 2)
586 ((x) == PIX_FMT_GRAY8 || \
587 (x) == PIX_FMT_Y400A || \
588 (x) == PIX_FMT_GRAY16BE || \
589 (x) == PIX_FMT_GRAY16LE)
592 #define isRGBinInt(x) \
594 (x)==PIX_FMT_RGB48BE || \
595 (x)==PIX_FMT_RGB48LE || \
596 (x)==PIX_FMT_RGBA64BE || \
597 (x)==PIX_FMT_RGBA64LE || \
598 (x)==PIX_FMT_RGB32 || \
599 (x)==PIX_FMT_RGB32_1 || \
600 (x)==PIX_FMT_RGB24 || \
601 (x)==PIX_FMT_RGB565BE || \
602 (x)==PIX_FMT_RGB565LE || \
603 (x)==PIX_FMT_RGB555BE || \
604 (x)==PIX_FMT_RGB555LE || \
605 (x)==PIX_FMT_RGB444BE || \
606 (x)==PIX_FMT_RGB444LE || \
607 (x)==PIX_FMT_RGB8 || \
608 (x)==PIX_FMT_RGB4 || \
609 (x)==PIX_FMT_RGB4_BYTE || \
610 (x)==PIX_FMT_MONOBLACK || \
611 (x)==PIX_FMT_MONOWHITE \
613 #define isBGRinInt(x) \
615 (x)==PIX_FMT_BGR48BE || \
616 (x)==PIX_FMT_BGR48LE || \
617 (x)==PIX_FMT_BGRA64BE || \
618 (x)==PIX_FMT_BGRA64LE || \
619 (x)==PIX_FMT_BGR32 || \
620 (x)==PIX_FMT_BGR32_1 || \
621 (x)==PIX_FMT_BGR24 || \
622 (x)==PIX_FMT_BGR565BE || \
623 (x)==PIX_FMT_BGR565LE || \
624 (x)==PIX_FMT_BGR555BE || \
625 (x)==PIX_FMT_BGR555LE || \
626 (x)==PIX_FMT_BGR444BE || \
627 (x)==PIX_FMT_BGR444LE || \
628 (x)==PIX_FMT_BGR8 || \
629 (x)==PIX_FMT_BGR4 || \
630 (x)==PIX_FMT_BGR4_BYTE|| \
631 (x)==PIX_FMT_MONOBLACK|| \
632 (x)==PIX_FMT_MONOWHITE \
635 #define isRGBinBytes(x) ( \
636 (x)==PIX_FMT_RGB48BE \
637 || (x)==PIX_FMT_RGB48LE \
638 || (x)==PIX_FMT_RGBA64BE \
639 || (x)==PIX_FMT_RGBA64LE \
640 || (x)==PIX_FMT_RGBA \
641 || (x)==PIX_FMT_ARGB \
642 || (x)==PIX_FMT_RGB24 \
644 #define isBGRinBytes(x) ( \
645 (x)==PIX_FMT_BGR48BE \
646 || (x)==PIX_FMT_BGR48LE \
647 || (x)==PIX_FMT_BGRA64BE \
648 || (x)==PIX_FMT_BGRA64LE \
649 || (x)==PIX_FMT_BGRA \
650 || (x)==PIX_FMT_ABGR \
651 || (x)==PIX_FMT_BGR24 \
654 #define isAnyRGB(x) \
658 (x)==PIX_FMT_GBR24P \
662 (av_pix_fmt_descriptors[x].nb_components == 2 || \
663 av_pix_fmt_descriptors[x].nb_components == 4)
666 #define isPacked(x) ( \
668 || (x)==PIX_FMT_YUYV422 \
669 || (x)==PIX_FMT_UYVY422 \
670 || (x)==PIX_FMT_Y400A \
675 #define isPacked(x) \
676 ((av_pix_fmt_descriptors[x].nb_components >= 2 && \
677 !(av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR)) || \
681 #define isPlanar(x) \
682 (av_pix_fmt_descriptors[x].nb_components >= 2 && \
683 (av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR))
685 #define isPackedRGB(x) \
686 ((av_pix_fmt_descriptors[x].flags & \
687 (PIX_FMT_PLANAR | PIX_FMT_RGB)) == PIX_FMT_RGB)
689 #define isPlanarRGB(x) \
690 ((av_pix_fmt_descriptors[x].flags & \
691 (PIX_FMT_PLANAR | PIX_FMT_RGB)) == (PIX_FMT_PLANAR | PIX_FMT_RGB))
693 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || \
694 (av_pix_fmt_descriptors[x].flags & PIX_FMT_PSEUDOPAL) || \
695 (x) == PIX_FMT_Y400A)
697 extern const uint64_t ff_dither4[2];
698 extern const uint64_t ff_dither8[2];
699 extern const uint8_t dithers[8][8][8];
700 extern const uint16_t dither_scale[15][16];
703 extern const AVClass sws_context_class;
706 * Set c->swScale to an unscaled converter if one exists for the specific
707 * source and destination formats, bit depths, flags, etc.
709 void ff_get_unscaled_swscale(SwsContext *c);
711 void ff_swscale_get_unscaled_altivec(SwsContext *c);
714 * Return function pointer to fastest main scaler path function depending
715 * on architecture and available optimizations.
717 SwsFunc ff_getSwsFunc(SwsContext *c);
719 void ff_sws_init_input_funcs(SwsContext *c);
720 void ff_sws_init_output_funcs(SwsContext *c,
721 yuv2planar1_fn *yuv2plane1,
722 yuv2planarX_fn *yuv2planeX,
723 yuv2interleavedX_fn *yuv2nv12cX,
724 yuv2packed1_fn *yuv2packed1,
725 yuv2packed2_fn *yuv2packed2,
726 yuv2packedX_fn *yuv2packedX);
727 void ff_sws_init_swScale_altivec(SwsContext *c);
728 void ff_sws_init_swScale_mmx(SwsContext *c);
730 #endif /* SWSCALE_SWSCALE_INTERNAL_H */