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/log.h"
32 #include "libavutil/pixfmt.h"
33 #include "libavutil/pixdesc.h"
35 #define STR(s) AV_TOSTRING(s) //AV_STRINGIFY is too long
37 #define FAST_BGR2YV12 //use 7-bit instead of 15-bit coefficients
39 #define MAX_FILTER_SIZE 256
44 #define ALT32_CORR (-1)
61 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
62 int srcStride[], int srcSliceY, int srcSliceH,
63 uint8_t* dst[], int dstStride[]);
67 * Write one line of horizontally scaled data to planar output
68 * without any additional vertical scaling (or point-scaling).
70 * @param src scaled source data, 15bit for 8-10bit output,
71 * 19-bit for 16bit output (in int32_t)
72 * @param dest pointer to the output plane. For >8bit
73 * output, this is in uint16_t
74 * @param dstW width of destination in pixels
75 * @param dither ordered dither array of type int16_t and size 8
76 * @param offset Dither offset
78 typedef void (*yuv2planar1_fn) (const int16_t *src, uint8_t *dest, int dstW,
79 const uint8_t *dither, int offset);
82 * Write one line of horizontally scaled data to planar output
83 * with multi-point vertical scaling between input pixels.
85 * @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
86 * @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
87 * 19-bit for 16bit output (in int32_t)
88 * @param filterSize number of vertical input lines to scale
89 * @param dest pointer to output plane. For >8bit
90 * output, this is in uint16_t
91 * @param dstW width of destination pixels
92 * @param offset Dither offset
94 typedef void (*yuv2planarX_fn) (const int16_t *filter, int filterSize,
95 const int16_t **src, uint8_t *dest, int dstW,
96 const uint8_t *dither, int offset);
99 * Write one line of horizontally scaled chroma to interleaved output
100 * with multi-point vertical scaling between input pixels.
102 * @param c SWS scaling context
103 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
104 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
105 * 19-bit for 16bit output (in int32_t)
106 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
107 * 19-bit for 16bit output (in int32_t)
108 * @param chrFilterSize number of vertical chroma input lines to scale
109 * @param dest pointer to the output plane. For >8bit
110 * output, this is in uint16_t
111 * @param dstW width of chroma planes
113 typedef void (*yuv2interleavedX_fn) (struct SwsContext *c, const int16_t *chrFilter, int chrFilterSize,
114 const int16_t **chrUSrc, const int16_t **chrVSrc,
115 uint8_t *dest, int dstW);
118 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
119 * output without any additional vertical scaling (or point-scaling). Note
120 * that this function may do chroma scaling, see the "uvalpha" argument.
122 * @param c SWS scaling context
123 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
124 * 19-bit for 16bit output (in int32_t)
125 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
126 * 19-bit for 16bit output (in int32_t)
127 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
128 * 19-bit for 16bit output (in int32_t)
129 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
130 * 19-bit for 16bit output (in int32_t)
131 * @param dest pointer to the output plane. For 16bit output, this is
133 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
134 * to write into dest[]
135 * @param uvalpha chroma scaling coefficient for the second line of chroma
136 * pixels, either 2048 or 0. If 0, one chroma input is used
137 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
138 * is set, it generates 1 output pixel). If 2048, two chroma
139 * input pixels should be averaged for 2 output pixels (this
140 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
141 * @param y vertical line number for this output. This does not need
142 * to be used to calculate the offset in the destination,
143 * but can be used to generate comfort noise using dithering
144 * for some output formats.
146 typedef void (*yuv2packed1_fn) (struct SwsContext *c, const int16_t *lumSrc,
147 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
148 const int16_t *alpSrc, uint8_t *dest,
149 int dstW, int uvalpha, int y);
151 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
152 * output by doing bilinear scaling between two input lines.
154 * @param c SWS scaling context
155 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
156 * 19-bit for 16bit output (in int32_t)
157 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
158 * 19-bit for 16bit output (in int32_t)
159 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
160 * 19-bit for 16bit output (in int32_t)
161 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
162 * 19-bit for 16bit output (in int32_t)
163 * @param dest pointer to the output plane. For 16bit output, this is
165 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
166 * to write into dest[]
167 * @param yalpha luma/alpha scaling coefficients for the second input line.
168 * The first line's coefficients can be calculated by using
170 * @param uvalpha chroma scaling coefficient for the second input line. The
171 * first line's coefficients can be calculated by using
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 * for some output formats.
178 typedef void (*yuv2packed2_fn) (struct SwsContext *c, const int16_t *lumSrc[2],
179 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
180 const int16_t *alpSrc[2], uint8_t *dest,
181 int dstW, int yalpha, int uvalpha, int y);
183 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
184 * output by doing multi-point vertical scaling between input pixels.
186 * @param c SWS scaling context
187 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
188 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
189 * 19-bit for 16bit output (in int32_t)
190 * @param lumFilterSize number of vertical luma/alpha input lines to scale
191 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
192 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
193 * 19-bit for 16bit output (in int32_t)
194 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
195 * 19-bit for 16bit output (in int32_t)
196 * @param chrFilterSize number of vertical chroma input lines to scale
197 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
198 * 19-bit for 16bit output (in int32_t)
199 * @param dest pointer to the output plane. For 16bit output, this is
201 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
202 * to write into dest[]
203 * @param y vertical line number for this output. This does not need
204 * to be used to calculate the offset in the destination,
205 * but can be used to generate comfort noise using dithering
206 * or some output formats.
208 typedef void (*yuv2packedX_fn) (struct SwsContext *c, const int16_t *lumFilter,
209 const int16_t **lumSrc, int lumFilterSize,
210 const int16_t *chrFilter, const int16_t **chrUSrc,
211 const int16_t **chrVSrc, int chrFilterSize,
212 const int16_t **alpSrc, uint8_t *dest,
215 /* This struct should be aligned on at least a 32-byte boundary. */
216 typedef struct SwsContext {
218 * info on struct for av_log
220 const AVClass *av_class;
223 * Note that src, dst, srcStride, dstStride will be copied in the
224 * sws_scale() wrapper so they can be freely modified here.
227 int srcW; ///< Width of source luma/alpha planes.
228 int srcH; ///< Height of source luma/alpha planes.
229 int dstH; ///< Height of destination luma/alpha planes.
230 int chrSrcW; ///< Width of source chroma planes.
231 int chrSrcH; ///< Height of source chroma planes.
232 int chrDstW; ///< Width of destination chroma planes.
233 int chrDstH; ///< Height of destination chroma planes.
234 int lumXInc, chrXInc;
235 int lumYInc, chrYInc;
236 enum PixelFormat dstFormat; ///< Destination pixel format.
237 enum PixelFormat srcFormat; ///< Source pixel format.
238 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
239 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
241 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
242 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
243 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
244 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
245 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
246 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
247 double param[2]; ///< Input parameters for scaling algorithms that need them.
249 uint32_t pal_yuv[256];
250 uint32_t pal_rgb[256];
253 * @name Scaled horizontal lines ring buffer.
254 * The horizontal scaler keeps just enough scaled lines in a ring buffer
255 * so they may be passed to the vertical scaler. The pointers to the
256 * allocated buffers for each line are duplicated in sequence in the ring
257 * buffer to simplify indexing and avoid wrapping around between lines
258 * inside the vertical scaler code. The wrapping is done before the
259 * vertical scaler is called.
262 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
263 int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
264 int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
265 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
266 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
267 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
268 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
269 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
270 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
271 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
274 uint8_t *formatConvBuffer;
277 * @name Horizontal and vertical filters.
278 * To better understand the following fields, here is a pseudo-code of
279 * their usage in filtering a horizontal line:
281 * for (i = 0; i < width; i++) {
283 * for (j = 0; j < filterSize; j++)
284 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
285 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
290 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
291 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
292 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
293 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
294 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
295 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
296 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
297 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
298 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
299 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
300 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
301 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
304 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
305 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
306 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
307 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
311 int dstY; ///< Last destination vertical line output from last slice.
312 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
313 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
314 uint8_t * table_rV[256];
315 uint8_t * table_gU[256];
317 uint8_t * table_bU[256];
320 int contrast, brightness, saturation; // for sws_getColorspaceDetails
321 int srcColorspaceTable[4];
322 int dstColorspaceTable[4];
323 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
324 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
325 int yuv2rgb_y_offset;
327 int yuv2rgb_v2r_coeff;
328 int yuv2rgb_v2g_coeff;
329 int yuv2rgb_u2g_coeff;
330 int yuv2rgb_u2b_coeff;
332 #define RED_DITHER "0*8"
333 #define GREEN_DITHER "1*8"
334 #define BLUE_DITHER "2*8"
335 #define Y_COEFF "3*8"
336 #define VR_COEFF "4*8"
337 #define UB_COEFF "5*8"
338 #define VG_COEFF "6*8"
339 #define UG_COEFF "7*8"
340 #define Y_OFFSET "8*8"
341 #define U_OFFSET "9*8"
342 #define V_OFFSET "10*8"
343 #define LUM_MMX_FILTER_OFFSET "11*8"
344 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
345 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
346 #define ESP_OFFSET "11*8+4*4*256*2+8"
347 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
348 #define U_TEMP "11*8+4*4*256*2+24"
349 #define V_TEMP "11*8+4*4*256*2+32"
350 #define Y_TEMP "11*8+4*4*256*2+40"
351 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
352 #define UV_OFF "11*8+4*4*256*3+48"
353 #define UV_OFFx2 "11*8+4*4*256*3+56"
354 #define DITHER16 "11*8+4*4*256*3+64"
355 #define DITHER32 "11*8+4*4*256*3+80"
357 DECLARE_ALIGNED(8, uint64_t, redDither);
358 DECLARE_ALIGNED(8, uint64_t, greenDither);
359 DECLARE_ALIGNED(8, uint64_t, blueDither);
361 DECLARE_ALIGNED(8, uint64_t, yCoeff);
362 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
363 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
364 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
365 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
366 DECLARE_ALIGNED(8, uint64_t, yOffset);
367 DECLARE_ALIGNED(8, uint64_t, uOffset);
368 DECLARE_ALIGNED(8, uint64_t, vOffset);
369 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
370 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
371 int dstW; ///< Width of destination luma/alpha planes.
372 DECLARE_ALIGNED(8, uint64_t, esp);
373 DECLARE_ALIGNED(8, uint64_t, vRounder);
374 DECLARE_ALIGNED(8, uint64_t, u_temp);
375 DECLARE_ALIGNED(8, uint64_t, v_temp);
376 DECLARE_ALIGNED(8, uint64_t, y_temp);
377 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
378 // alignment of these values is not necessary, but merely here
379 // to maintain the same offset across x8632 and x86-64. Once we
380 // use proper offset macros in the asm, they can be removed.
381 DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
382 DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
383 DECLARE_ALIGNED(8, uint16_t, dither16)[8];
384 DECLARE_ALIGNED(8, uint32_t, dither32)[8];
386 const uint8_t *chrDither8, *lumDither8;
389 vector signed short CY;
390 vector signed short CRV;
391 vector signed short CBU;
392 vector signed short CGU;
393 vector signed short CGV;
394 vector signed short OY;
395 vector unsigned short CSHIFT;
396 vector signed short *vYCoeffsBank, *vCCoeffsBank;
400 DECLARE_ALIGNED(4, uint32_t, oy);
401 DECLARE_ALIGNED(4, uint32_t, oc);
402 DECLARE_ALIGNED(4, uint32_t, zero);
403 DECLARE_ALIGNED(4, uint32_t, cy);
404 DECLARE_ALIGNED(4, uint32_t, crv);
405 DECLARE_ALIGNED(4, uint32_t, rmask);
406 DECLARE_ALIGNED(4, uint32_t, cbu);
407 DECLARE_ALIGNED(4, uint32_t, bmask);
408 DECLARE_ALIGNED(4, uint32_t, cgu);
409 DECLARE_ALIGNED(4, uint32_t, cgv);
410 DECLARE_ALIGNED(4, uint32_t, gmask);
414 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
418 /* function pointers for swScale() */
419 yuv2planar1_fn yuv2plane1;
420 yuv2planarX_fn yuv2planeX;
421 yuv2interleavedX_fn yuv2nv12cX;
422 yuv2packed1_fn yuv2packed1;
423 yuv2packed2_fn yuv2packed2;
424 yuv2packedX_fn yuv2packedX;
426 void (*lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
427 int width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
428 void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
429 int width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
430 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
431 const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
432 int width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
435 * Functions to read planar input, such as planar RGB, and convert
436 * internally to Y/UV.
439 void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width);
440 void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width);
444 * Scale one horizontal line of input data using a bilinear filter
445 * to produce one line of output data. Compared to SwsContext->hScale(),
446 * please take note of the following caveats when using these:
447 * - Scaling is done using only 7bit instead of 14bit coefficients.
448 * - You can use no more than 5 input pixels to produce 4 output
449 * pixels. Therefore, this filter should not be used for downscaling
450 * by more than ~20% in width (because that equals more than 5/4th
451 * downscaling and thus more than 5 pixels input per 4 pixels output).
452 * - In general, bilinear filters create artifacts during downscaling
453 * (even when <20%), because one output pixel will span more than one
454 * input pixel, and thus some pixels will need edges of both neighbor
455 * pixels to interpolate the output pixel. Since you can use at most
456 * two input pixels per output pixel in bilinear scaling, this is
457 * impossible and thus downscaling by any size will create artifacts.
458 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
459 * in SwsContext->flags.
462 void (*hyscale_fast)(struct SwsContext *c,
463 int16_t *dst, int dstWidth,
464 const uint8_t *src, int srcW, int xInc);
465 void (*hcscale_fast)(struct SwsContext *c,
466 int16_t *dst1, int16_t *dst2, int dstWidth,
467 const uint8_t *src1, const uint8_t *src2,
472 * Scale one horizontal line of input data using a filter over the input
473 * lines, to produce one (differently sized) line of output data.
475 * @param dst pointer to destination buffer for horizontally scaled
476 * data. If the number of bits per component of one
477 * destination pixel (SwsContext->dstBpc) is <= 10, data
478 * will be 15bpc in 16bits (int16_t) width. Else (i.e.
479 * SwsContext->dstBpc == 16), data will be 19bpc in
480 * 32bits (int32_t) width.
481 * @param dstW width of destination image
482 * @param src pointer to source data to be scaled. If the number of
483 * bits per component of a source pixel (SwsContext->srcBpc)
484 * is 8, this is 8bpc in 8bits (uint8_t) width. Else
485 * (i.e. SwsContext->dstBpc > 8), this is native depth
486 * in 16bits (uint16_t) width. In other words, for 9-bit
487 * YUV input, this is 9bpc, for 10-bit YUV input, this is
488 * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
489 * @param filter filter coefficients to be used per output pixel for
490 * scaling. This contains 14bpp filtering coefficients.
491 * Guaranteed to contain dstW * filterSize entries.
492 * @param filterPos position of the first input pixel to be used for
493 * each output pixel during scaling. Guaranteed to
494 * contain dstW entries.
495 * @param filterSize the number of input coefficients to be used (and
496 * thus the number of input pixels to be used) for
497 * creating a single output pixel. Is aligned to 4
498 * (and input coefficients thus padded with zeroes)
499 * to simplify creating SIMD code.
502 void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
503 const int16_t *filter, const int16_t *filterPos,
505 void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
506 const int16_t *filter, const int16_t *filterPos,
510 void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
511 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
513 int needs_hcscale; ///< Set if there are chroma planes to be converted.
516 //FIXME check init (where 0)
518 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
519 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
520 int fullRange, int brightness,
521 int contrast, int saturation);
523 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
524 int brightness, int contrast, int saturation);
525 void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
526 int lastInLumBuf, int lastInChrBuf);
528 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
529 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
530 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
531 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
532 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
533 void ff_bfin_get_unscaled_swscale(SwsContext *c);
535 #if FF_API_SWS_FORMAT_NAME
537 * @deprecated Use av_get_pix_fmt_name() instead.
540 const char *sws_format_name(enum PixelFormat format);
544 (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 15)
546 #define is9_OR_10BPS(x) \
547 (av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 8 || \
548 av_pix_fmt_descriptors[x].comp[0].depth_minus1 == 9)
550 #define isNBPS(x) is9_OR_10BPS(x)
553 (av_pix_fmt_descriptors[x].flags & PIX_FMT_BE)
556 (!(av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB) && \
557 av_pix_fmt_descriptors[x].nb_components >= 2)
559 #define isPlanarYUV(x) \
560 ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR) && \
564 (av_pix_fmt_descriptors[x].flags & PIX_FMT_RGB)
567 (!(av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) && \
568 av_pix_fmt_descriptors[x].nb_components <= 2)
570 #define isGray(x) ( \
572 || (x)==PIX_FMT_GRAY8A \
573 || (x)==PIX_FMT_GRAY16BE \
574 || (x)==PIX_FMT_GRAY16LE \
578 #define isRGBinInt(x) ( \
579 (x)==PIX_FMT_RGB48BE \
580 || (x)==PIX_FMT_RGB48LE \
581 || (x)==PIX_FMT_RGBA64BE \
582 || (x)==PIX_FMT_RGBA64LE \
583 || (x)==PIX_FMT_RGB32 \
584 || (x)==PIX_FMT_RGB32_1 \
585 || (x)==PIX_FMT_RGB24 \
586 || (x)==PIX_FMT_RGB565BE \
587 || (x)==PIX_FMT_RGB565LE \
588 || (x)==PIX_FMT_RGB555BE \
589 || (x)==PIX_FMT_RGB555LE \
590 || (x)==PIX_FMT_RGB444BE \
591 || (x)==PIX_FMT_RGB444LE \
592 || (x)==PIX_FMT_RGB8 \
593 || (x)==PIX_FMT_RGB4 \
594 || (x)==PIX_FMT_RGB4_BYTE \
595 || (x)==PIX_FMT_MONOBLACK \
596 || (x)==PIX_FMT_MONOWHITE \
598 #define isBGRinInt(x) ( \
599 (x)==PIX_FMT_BGR48BE \
600 || (x)==PIX_FMT_BGR48LE \
601 || (x)==PIX_FMT_BGRA64BE \
602 || (x)==PIX_FMT_BGRA64LE \
603 || (x)==PIX_FMT_BGR32 \
604 || (x)==PIX_FMT_BGR32_1 \
605 || (x)==PIX_FMT_BGR24 \
606 || (x)==PIX_FMT_BGR565BE \
607 || (x)==PIX_FMT_BGR565LE \
608 || (x)==PIX_FMT_BGR555BE \
609 || (x)==PIX_FMT_BGR555LE \
610 || (x)==PIX_FMT_BGR444BE \
611 || (x)==PIX_FMT_BGR444LE \
612 || (x)==PIX_FMT_BGR8 \
613 || (x)==PIX_FMT_BGR4 \
614 || (x)==PIX_FMT_BGR4_BYTE \
615 || (x)==PIX_FMT_MONOBLACK \
616 || (x)==PIX_FMT_MONOWHITE \
619 #define isRGBinBytes(x) ( \
620 (x)==PIX_FMT_RGB48BE \
621 || (x)==PIX_FMT_RGB48LE \
622 || (x)==PIX_FMT_RGBA64BE \
623 || (x)==PIX_FMT_RGBA64LE \
624 || (x)==PIX_FMT_RGBA \
625 || (x)==PIX_FMT_ARGB \
626 || (x)==PIX_FMT_RGB24 \
628 #define isBGRinBytes(x) ( \
629 (x)==PIX_FMT_BGR48BE \
630 || (x)==PIX_FMT_BGR48LE \
631 || (x)==PIX_FMT_BGRA64BE \
632 || (x)==PIX_FMT_BGRA64LE \
633 || (x)==PIX_FMT_BGRA \
634 || (x)==PIX_FMT_ABGR \
635 || (x)==PIX_FMT_BGR24 \
638 #define isAnyRGB(x) ( \
641 || (x)==PIX_FMT_GBR24P \
645 (av_pix_fmt_descriptors[x].nb_components == 2 || \
646 av_pix_fmt_descriptors[x].nb_components == 4)
649 #define isPacked(x) ( \
651 || (x)==PIX_FMT_YUYV422 \
652 || (x)==PIX_FMT_UYVY422 \
653 || (x)==PIX_FMT_Y400A \
658 #define isPacked(x) \
659 (av_pix_fmt_descriptors[x].nb_components >= 2 && \
660 !(av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR))
663 #define isPlanar(x) \
664 (av_pix_fmt_descriptors[x].nb_components >= 2 && \
665 (av_pix_fmt_descriptors[x].flags & PIX_FMT_PLANAR))
667 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
669 extern const uint64_t ff_dither4[2];
670 extern const uint64_t ff_dither8[2];
671 extern const uint8_t dithers[8][8][8];
672 extern const uint16_t dither_scale[15][16];
675 extern const AVClass sws_context_class;
678 * Sets c->swScale to an unscaled converter if one exists for the specific
679 * source and destination formats, bit depths, flags, etc.
681 void ff_get_unscaled_swscale(SwsContext *c);
683 void ff_swscale_get_unscaled_altivec(SwsContext *c);
686 * Returns function pointer to fastest main scaler path function depending
687 * on architecture and available optimizations.
689 SwsFunc ff_getSwsFunc(SwsContext *c);
691 void ff_sws_init_swScale_altivec(SwsContext *c);
692 void ff_sws_init_swScale_mmx(SwsContext *c);
694 #endif /* SWSCALE_SWSCALE_INTERNAL_H */