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 data to planar output
80 * with multi-point vertical scaling between input pixels.
82 * @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
83 * @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
84 * 19-bit for 16bit output (in int32_t)
85 * @param filterSize number of vertical input lines to scale
86 * @param dest pointer to output plane. For >8bit
87 * output, this is in uint16_t
88 * @param dstW width of destination pixels
89 * @param offset Dither offset
91 typedef void (*yuv2planarX_fn) (const int16_t *filter, int filterSize,
92 const int16_t **src, uint8_t *dest, int dstW,
93 const uint8_t *dither, int offset);
96 * Write one line of horizontally scaled chroma to interleaved output
97 * with multi-point vertical scaling between input pixels.
99 * @param c SWS scaling context
100 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
101 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
102 * 19-bit for 16bit output (in int32_t)
103 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
104 * 19-bit for 16bit output (in int32_t)
105 * @param chrFilterSize number of vertical chroma input lines to scale
106 * @param dest pointer to the output plane. For >8bit
107 * output, this is in uint16_t
108 * @param dstW width of chroma planes
110 typedef void (*yuv2interleavedX_fn) (struct SwsContext *c, const int16_t *chrFilter, int chrFilterSize,
111 const int16_t **chrUSrc, const int16_t **chrVSrc,
112 uint8_t *dest, int dstW);
115 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
116 * output without any additional vertical scaling (or point-scaling). Note
117 * that this function may do chroma scaling, see the "uvalpha" argument.
119 * @param c SWS scaling context
120 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
121 * 19-bit for 16bit output (in int32_t)
122 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
123 * 19-bit for 16bit output (in int32_t)
124 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
125 * 19-bit for 16bit output (in int32_t)
126 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
127 * 19-bit for 16bit output (in int32_t)
128 * @param dest pointer to the output plane. For 16bit output, this is
130 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
131 * to write into dest[]
132 * @param uvalpha chroma scaling coefficient for the second line of chroma
133 * pixels, either 2048 or 0. If 0, one chroma input is used
134 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
135 * is set, it generates 1 output pixel). If 2048, two chroma
136 * input pixels should be averaged for 2 output pixels (this
137 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
138 * @param y vertical line number for this output. This does not need
139 * to be used to calculate the offset in the destination,
140 * but can be used to generate comfort noise using dithering
141 * for some output formats.
143 typedef void (*yuv2packed1_fn) (struct SwsContext *c, const int16_t *lumSrc,
144 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
145 const int16_t *alpSrc, uint8_t *dest,
146 int dstW, int uvalpha, int y);
148 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
149 * output by doing bilinear scaling between two input lines.
151 * @param c SWS scaling context
152 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
153 * 19-bit for 16bit output (in int32_t)
154 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
155 * 19-bit for 16bit output (in int32_t)
156 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
157 * 19-bit for 16bit output (in int32_t)
158 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
159 * 19-bit for 16bit output (in int32_t)
160 * @param dest pointer to the output plane. For 16bit output, this is
162 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
163 * to write into dest[]
164 * @param yalpha luma/alpha scaling coefficients for the second input line.
165 * The first line's coefficients can be calculated by using
167 * @param uvalpha chroma scaling coefficient for the second input line. The
168 * first line's coefficients can be calculated by using
170 * @param y vertical line number for this output. This does not need
171 * to be used to calculate the offset in the destination,
172 * but can be used to generate comfort noise using dithering
173 * for some output formats.
175 typedef void (*yuv2packed2_fn) (struct SwsContext *c, const int16_t *lumSrc[2],
176 const int16_t *chrUSrc[2], const int16_t *chrVSrc[2],
177 const int16_t *alpSrc[2], uint8_t *dest,
178 int dstW, int yalpha, int uvalpha, int y);
180 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
181 * output by doing multi-point vertical scaling between input pixels.
183 * @param c SWS scaling context
184 * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
185 * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
186 * 19-bit for 16bit output (in int32_t)
187 * @param lumFilterSize number of vertical luma/alpha input lines to scale
188 * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
189 * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
190 * 19-bit for 16bit output (in int32_t)
191 * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
192 * 19-bit for 16bit output (in int32_t)
193 * @param chrFilterSize number of vertical chroma input lines to scale
194 * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
195 * 19-bit for 16bit output (in int32_t)
196 * @param dest pointer to the output plane. For 16bit output, this is
198 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
199 * to write into dest[]
200 * @param y vertical line number for this output. This does not need
201 * to be used to calculate the offset in the destination,
202 * but can be used to generate comfort noise using dithering
203 * or some output formats.
205 typedef void (*yuv2packedX_fn) (struct SwsContext *c, const int16_t *lumFilter,
206 const int16_t **lumSrc, int lumFilterSize,
207 const int16_t *chrFilter, const int16_t **chrUSrc,
208 const int16_t **chrVSrc, int chrFilterSize,
209 const int16_t **alpSrc, uint8_t *dest,
212 /* This struct should be aligned on at least a 32-byte boundary. */
213 typedef struct SwsContext {
215 * info on struct for av_log
217 const AVClass *av_class;
220 * Note that src, dst, srcStride, dstStride will be copied in the
221 * sws_scale() wrapper so they can be freely modified here.
224 int srcW; ///< Width of source luma/alpha planes.
225 int srcH; ///< Height of source luma/alpha planes.
226 int dstH; ///< Height of destination luma/alpha planes.
227 int chrSrcW; ///< Width of source chroma planes.
228 int chrSrcH; ///< Height of source chroma planes.
229 int chrDstW; ///< Width of destination chroma planes.
230 int chrDstH; ///< Height of destination chroma planes.
231 int lumXInc, chrXInc;
232 int lumYInc, chrYInc;
233 enum PixelFormat dstFormat; ///< Destination pixel format.
234 enum PixelFormat srcFormat; ///< Source pixel format.
235 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
236 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
238 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
239 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
240 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
241 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
242 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
243 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
244 double param[2]; ///< Input parameters for scaling algorithms that need them.
246 uint32_t pal_yuv[256];
247 uint32_t pal_rgb[256];
250 * @name Scaled horizontal lines ring buffer.
251 * The horizontal scaler keeps just enough scaled lines in a ring buffer
252 * so they may be passed to the vertical scaler. The pointers to the
253 * allocated buffers for each line are duplicated in sequence in the ring
254 * buffer to simplify indexing and avoid wrapping around between lines
255 * inside the vertical scaler code. The wrapping is done before the
256 * vertical scaler is called.
259 int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
260 int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
261 int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
262 int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
263 int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
264 int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
265 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
266 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
267 int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
268 int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
271 uint8_t *formatConvBuffer;
274 * @name Horizontal and vertical filters.
275 * To better understand the following fields, here is a pseudo-code of
276 * their usage in filtering a horizontal line:
278 * for (i = 0; i < width; i++) {
280 * for (j = 0; j < filterSize; j++)
281 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
282 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
287 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
288 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
289 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
290 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
291 int16_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
292 int16_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
293 int16_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
294 int16_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
295 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
296 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
297 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
298 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
301 int lumMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for luma/alpha planes.
302 int chrMmx2FilterCodeSize; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code size for chroma planes.
303 uint8_t *lumMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for luma/alpha planes.
304 uint8_t *chrMmx2FilterCode; ///< Runtime-generated MMX2 horizontal fast bilinear scaler code for chroma planes.
308 int dstY; ///< Last destination vertical line output from last slice.
309 int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
310 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
311 uint8_t * table_rV[256];
312 uint8_t * table_gU[256];
314 uint8_t * table_bU[256];
317 int contrast, brightness, saturation; // for sws_getColorspaceDetails
318 int srcColorspaceTable[4];
319 int dstColorspaceTable[4];
320 int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
321 int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
322 int yuv2rgb_y_offset;
324 int yuv2rgb_v2r_coeff;
325 int yuv2rgb_v2g_coeff;
326 int yuv2rgb_u2g_coeff;
327 int yuv2rgb_u2b_coeff;
329 #define RED_DITHER "0*8"
330 #define GREEN_DITHER "1*8"
331 #define BLUE_DITHER "2*8"
332 #define Y_COEFF "3*8"
333 #define VR_COEFF "4*8"
334 #define UB_COEFF "5*8"
335 #define VG_COEFF "6*8"
336 #define UG_COEFF "7*8"
337 #define Y_OFFSET "8*8"
338 #define U_OFFSET "9*8"
339 #define V_OFFSET "10*8"
340 #define LUM_MMX_FILTER_OFFSET "11*8"
341 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
342 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
343 #define ESP_OFFSET "11*8+4*4*256*2+8"
344 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
345 #define U_TEMP "11*8+4*4*256*2+24"
346 #define V_TEMP "11*8+4*4*256*2+32"
347 #define Y_TEMP "11*8+4*4*256*2+40"
348 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
349 #define UV_OFF_PX "11*8+4*4*256*3+48"
350 #define UV_OFF_BYTE "11*8+4*4*256*3+56"
351 #define DITHER16 "11*8+4*4*256*3+64"
352 #define DITHER32 "11*8+4*4*256*3+80"
354 DECLARE_ALIGNED(8, uint64_t, redDither);
355 DECLARE_ALIGNED(8, uint64_t, greenDither);
356 DECLARE_ALIGNED(8, uint64_t, blueDither);
358 DECLARE_ALIGNED(8, uint64_t, yCoeff);
359 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
360 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
361 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
362 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
363 DECLARE_ALIGNED(8, uint64_t, yOffset);
364 DECLARE_ALIGNED(8, uint64_t, uOffset);
365 DECLARE_ALIGNED(8, uint64_t, vOffset);
366 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
367 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
368 int dstW; ///< Width of destination luma/alpha planes.
369 DECLARE_ALIGNED(8, uint64_t, esp);
370 DECLARE_ALIGNED(8, uint64_t, vRounder);
371 DECLARE_ALIGNED(8, uint64_t, u_temp);
372 DECLARE_ALIGNED(8, uint64_t, v_temp);
373 DECLARE_ALIGNED(8, uint64_t, y_temp);
374 int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
375 // alignment of these values is not necessary, but merely here
376 // to maintain the same offset across x8632 and x86-64. Once we
377 // use proper offset macros in the asm, they can be removed.
378 DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px); ///< offset (in pixels) between u and v planes
379 DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte); ///< offset (in bytes) between u and v planes
380 DECLARE_ALIGNED(8, uint16_t, dither16)[8];
381 DECLARE_ALIGNED(8, uint32_t, dither32)[8];
383 const uint8_t *chrDither8, *lumDither8;
386 vector signed short CY;
387 vector signed short CRV;
388 vector signed short CBU;
389 vector signed short CGU;
390 vector signed short CGV;
391 vector signed short OY;
392 vector unsigned short CSHIFT;
393 vector signed short *vYCoeffsBank, *vCCoeffsBank;
397 DECLARE_ALIGNED(4, uint32_t, oy);
398 DECLARE_ALIGNED(4, uint32_t, oc);
399 DECLARE_ALIGNED(4, uint32_t, zero);
400 DECLARE_ALIGNED(4, uint32_t, cy);
401 DECLARE_ALIGNED(4, uint32_t, crv);
402 DECLARE_ALIGNED(4, uint32_t, rmask);
403 DECLARE_ALIGNED(4, uint32_t, cbu);
404 DECLARE_ALIGNED(4, uint32_t, bmask);
405 DECLARE_ALIGNED(4, uint32_t, cgu);
406 DECLARE_ALIGNED(4, uint32_t, cgv);
407 DECLARE_ALIGNED(4, uint32_t, gmask);
411 DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
414 /* function pointers for swScale() */
415 yuv2planar1_fn yuv2plane1;
416 yuv2planarX_fn yuv2planeX;
417 yuv2interleavedX_fn yuv2nv12cX;
418 yuv2packed1_fn yuv2packed1;
419 yuv2packed2_fn yuv2packed2;
420 yuv2packedX_fn yuv2packedX;
422 void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
423 int width, uint32_t *pal); ///< Unscaled conversion of luma plane to YV12 for horizontal scaler.
424 void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
425 int width, uint32_t *pal); ///< Unscaled conversion of alpha plane to YV12 for horizontal scaler.
426 void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
427 const uint8_t *src1, const uint8_t *src2,
428 int width, uint32_t *pal); ///< Unscaled conversion of chroma planes to YV12 for horizontal scaler.
430 * Scale one horizontal line of input data using a bilinear filter
431 * to produce one line of output data. Compared to SwsContext->hScale(),
432 * please take note of the following caveats when using these:
433 * - Scaling is done using only 7bit instead of 14bit coefficients.
434 * - You can use no more than 5 input pixels to produce 4 output
435 * pixels. Therefore, this filter should not be used for downscaling
436 * by more than ~20% in width (because that equals more than 5/4th
437 * downscaling and thus more than 5 pixels input per 4 pixels output).
438 * - In general, bilinear filters create artifacts during downscaling
439 * (even when <20%), because one output pixel will span more than one
440 * input pixel, and thus some pixels will need edges of both neighbor
441 * pixels to interpolate the output pixel. Since you can use at most
442 * two input pixels per output pixel in bilinear scaling, this is
443 * impossible and thus downscaling by any size will create artifacts.
444 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
445 * in SwsContext->flags.
448 void (*hyscale_fast)(struct SwsContext *c,
449 int16_t *dst, int dstWidth,
450 const uint8_t *src, int srcW, int xInc);
451 void (*hcscale_fast)(struct SwsContext *c,
452 int16_t *dst1, int16_t *dst2, int dstWidth,
453 const uint8_t *src1, const uint8_t *src2,
458 * Scale one horizontal line of input data using a filter over the input
459 * lines, to produce one (differently sized) line of output data.
461 * @param dst pointer to destination buffer for horizontally scaled
462 * data. If the number of bits per component of one
463 * destination pixel (SwsContext->dstBpc) is <= 10, data
464 * will be 15bpc in 16bits (int16_t) width. Else (i.e.
465 * SwsContext->dstBpc == 16), data will be 19bpc in
466 * 32bits (int32_t) width.
467 * @param dstW width of destination image
468 * @param src pointer to source data to be scaled. If the number of
469 * bits per component of a source pixel (SwsContext->srcBpc)
470 * is 8, this is 8bpc in 8bits (uint8_t) width. Else
471 * (i.e. SwsContext->dstBpc > 8), this is native depth
472 * in 16bits (uint16_t) width. In other words, for 9-bit
473 * YUV input, this is 9bpc, for 10-bit YUV input, this is
474 * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
475 * @param filter filter coefficients to be used per output pixel for
476 * scaling. This contains 14bpp filtering coefficients.
477 * Guaranteed to contain dstW * filterSize entries.
478 * @param filterPos position of the first input pixel to be used for
479 * each output pixel during scaling. Guaranteed to
480 * contain dstW entries.
481 * @param filterSize the number of input coefficients to be used (and
482 * thus the number of input pixels to be used) for
483 * creating a single output pixel. Is aligned to 4
484 * (and input coefficients thus padded with zeroes)
485 * to simplify creating SIMD code.
488 void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
489 const int16_t *filter, const int16_t *filterPos,
491 void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
492 const int16_t *filter, const int16_t *filterPos,
496 void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
497 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
499 int needs_hcscale; ///< Set if there are chroma planes to be converted.
502 //FIXME check init (where 0)
504 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c);
505 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
506 int fullRange, int brightness,
507 int contrast, int saturation);
509 void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4],
510 int brightness, int contrast, int saturation);
511 void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex,
512 int lastInLumBuf, int lastInChrBuf);
514 SwsFunc ff_yuv2rgb_init_mmx(SwsContext *c);
515 SwsFunc ff_yuv2rgb_init_vis(SwsContext *c);
516 SwsFunc ff_yuv2rgb_init_mlib(SwsContext *c);
517 SwsFunc ff_yuv2rgb_init_altivec(SwsContext *c);
518 SwsFunc ff_yuv2rgb_get_func_ptr_bfin(SwsContext *c);
519 void ff_bfin_get_unscaled_swscale(SwsContext *c);
521 const char *sws_format_name(enum PixelFormat format);
523 //FIXME replace this with something faster
524 #define is16BPS(x) ( \
525 (x)==PIX_FMT_GRAY16BE \
526 || (x)==PIX_FMT_GRAY16LE \
527 || (x)==PIX_FMT_BGR48BE \
528 || (x)==PIX_FMT_BGR48LE \
529 || (x)==PIX_FMT_RGB48BE \
530 || (x)==PIX_FMT_RGB48LE \
531 || (x)==PIX_FMT_YUV420P16LE \
532 || (x)==PIX_FMT_YUV422P16LE \
533 || (x)==PIX_FMT_YUV444P16LE \
534 || (x)==PIX_FMT_YUV420P16BE \
535 || (x)==PIX_FMT_YUV422P16BE \
536 || (x)==PIX_FMT_YUV444P16BE \
538 #define is9_OR_10BPS(x) ( \
539 (x)==PIX_FMT_YUV420P9LE \
540 || (x)==PIX_FMT_YUV420P9BE \
541 || (x)==PIX_FMT_YUV422P9LE \
542 || (x)==PIX_FMT_YUV422P9BE \
543 || (x)==PIX_FMT_YUV444P9BE \
544 || (x)==PIX_FMT_YUV444P9LE \
545 || (x)==PIX_FMT_YUV422P10BE \
546 || (x)==PIX_FMT_YUV422P10LE \
547 || (x)==PIX_FMT_YUV444P10BE \
548 || (x)==PIX_FMT_YUV444P10LE \
549 || (x)==PIX_FMT_YUV420P10LE \
550 || (x)==PIX_FMT_YUV420P10BE \
552 #define isBE(x) ((x)&1)
553 #define isPlanar8YUV(x) ( \
554 (x)==PIX_FMT_YUV410P \
555 || (x)==PIX_FMT_YUV420P \
556 || (x)==PIX_FMT_YUVA420P \
557 || (x)==PIX_FMT_YUV411P \
558 || (x)==PIX_FMT_YUV422P \
559 || (x)==PIX_FMT_YUV444P \
560 || (x)==PIX_FMT_YUV440P \
561 || (x)==PIX_FMT_NV12 \
562 || (x)==PIX_FMT_NV21 \
564 #define isPlanarYUV(x) ( \
566 || (x)==PIX_FMT_YUV420P9LE \
567 || (x)==PIX_FMT_YUV422P9LE \
568 || (x)==PIX_FMT_YUV444P9LE \
569 || (x)==PIX_FMT_YUV420P10LE \
570 || (x)==PIX_FMT_YUV422P10LE \
571 || (x)==PIX_FMT_YUV444P10LE \
572 || (x)==PIX_FMT_YUV420P16LE \
573 || (x)==PIX_FMT_YUV422P16LE \
574 || (x)==PIX_FMT_YUV444P16LE \
575 || (x)==PIX_FMT_YUV420P9BE \
576 || (x)==PIX_FMT_YUV422P9BE \
577 || (x)==PIX_FMT_YUV444P9BE \
578 || (x)==PIX_FMT_YUV420P10BE \
579 || (x)==PIX_FMT_YUV422P10BE \
580 || (x)==PIX_FMT_YUV444P10BE \
581 || (x)==PIX_FMT_YUV420P16BE \
582 || (x)==PIX_FMT_YUV422P16BE \
583 || (x)==PIX_FMT_YUV444P16BE \
586 (x)==PIX_FMT_UYVY422 \
587 || (x)==PIX_FMT_YUYV422 \
590 #define isGray(x) ( \
592 || (x)==PIX_FMT_Y400A \
593 || (x)==PIX_FMT_GRAY16BE \
594 || (x)==PIX_FMT_GRAY16LE \
596 #define isGray16(x) ( \
597 (x)==PIX_FMT_GRAY16BE \
598 || (x)==PIX_FMT_GRAY16LE \
600 #define isRGBinInt(x) ( \
601 (x)==PIX_FMT_RGB48BE \
602 || (x)==PIX_FMT_RGB48LE \
603 || (x)==PIX_FMT_RGB32 \
604 || (x)==PIX_FMT_RGB32_1 \
605 || (x)==PIX_FMT_RGB24 \
606 || (x)==PIX_FMT_RGB565BE \
607 || (x)==PIX_FMT_RGB565LE \
608 || (x)==PIX_FMT_RGB555BE \
609 || (x)==PIX_FMT_RGB555LE \
610 || (x)==PIX_FMT_RGB444BE \
611 || (x)==PIX_FMT_RGB444LE \
612 || (x)==PIX_FMT_RGB8 \
613 || (x)==PIX_FMT_RGB4 \
614 || (x)==PIX_FMT_RGB4_BYTE \
615 || (x)==PIX_FMT_MONOBLACK \
616 || (x)==PIX_FMT_MONOWHITE \
618 #define isBGRinInt(x) ( \
619 (x)==PIX_FMT_BGR48BE \
620 || (x)==PIX_FMT_BGR48LE \
621 || (x)==PIX_FMT_BGR32 \
622 || (x)==PIX_FMT_BGR32_1 \
623 || (x)==PIX_FMT_BGR24 \
624 || (x)==PIX_FMT_BGR565BE \
625 || (x)==PIX_FMT_BGR565LE \
626 || (x)==PIX_FMT_BGR555BE \
627 || (x)==PIX_FMT_BGR555LE \
628 || (x)==PIX_FMT_BGR444BE \
629 || (x)==PIX_FMT_BGR444LE \
630 || (x)==PIX_FMT_BGR8 \
631 || (x)==PIX_FMT_BGR4 \
632 || (x)==PIX_FMT_BGR4_BYTE \
633 || (x)==PIX_FMT_MONOBLACK \
634 || (x)==PIX_FMT_MONOWHITE \
636 #define isRGBinBytes(x) ( \
637 (x)==PIX_FMT_RGB48BE \
638 || (x)==PIX_FMT_RGB48LE \
639 || (x)==PIX_FMT_RGBA \
640 || (x)==PIX_FMT_ARGB \
641 || (x)==PIX_FMT_RGB24 \
643 #define isBGRinBytes(x) ( \
644 (x)==PIX_FMT_BGR48BE \
645 || (x)==PIX_FMT_BGR48LE \
646 || (x)==PIX_FMT_BGRA \
647 || (x)==PIX_FMT_ABGR \
648 || (x)==PIX_FMT_BGR24 \
650 #define isAnyRGB(x) ( \
654 #define isALPHA(x) ( \
656 || (x)==PIX_FMT_BGR32_1 \
657 || (x)==PIX_FMT_RGB32 \
658 || (x)==PIX_FMT_RGB32_1 \
659 || (x)==PIX_FMT_Y400A \
660 || (x)==PIX_FMT_YUVA420P \
662 #define isPacked(x) ( \
664 || (x)==PIX_FMT_YUYV422 \
665 || (x)==PIX_FMT_UYVY422 \
666 || (x)==PIX_FMT_Y400A \
669 #define usePal(x) ((av_pix_fmt_descriptors[x].flags & PIX_FMT_PAL) || (x) == PIX_FMT_Y400A)
671 extern const uint64_t ff_dither4[2];
672 extern const uint64_t ff_dither8[2];
674 extern const AVClass sws_context_class;
677 * Sets c->swScale to an unscaled converter if one exists for the specific
678 * source and destination formats, bit depths, flags, etc.
680 void ff_get_unscaled_swscale(SwsContext *c);
682 void ff_swscale_get_unscaled_altivec(SwsContext *c);
685 * Returns function pointer to fastest main scaler path function depending
686 * on architecture and available optimizations.
688 SwsFunc ff_getSwsFunc(SwsContext *c);
690 void ff_sws_init_swScale_altivec(SwsContext *c);
691 void ff_sws_init_swScale_mmx(SwsContext *c);
693 #endif /* SWSCALE_SWSCALE_INTERNAL_H */