FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libswscale/swscale_internal.h
Date: 2025-01-20 09:27:23
Exec Total Coverage
Lines: 168 174 96.6%
Functions: 26 27 96.3%
Branches: 179 208 86.1%

Line Branch Exec Source
1 /*
2 * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #ifndef SWSCALE_SWSCALE_INTERNAL_H
22 #define SWSCALE_SWSCALE_INTERNAL_H
23
24 #include <stdatomic.h>
25 #include <assert.h>
26
27 #include "config.h"
28 #include "swscale.h"
29 #include "graph.h"
30
31 #include "libavutil/avassert.h"
32 #include "libavutil/common.h"
33 #include "libavutil/frame.h"
34 #include "libavutil/intreadwrite.h"
35 #include "libavutil/log.h"
36 #include "libavutil/mem_internal.h"
37 #include "libavutil/pixfmt.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavutil/slicethread.h"
40 #if HAVE_ALTIVEC
41 #include "libavutil/ppc/util_altivec.h"
42 #endif
43 #include "libavutil/half2float.h"
44
45 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
46
47 #define YUVRGB_TABLE_HEADROOM 512
48 #define YUVRGB_TABLE_LUMA_HEADROOM 512
49
50 #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE
51
52 #define SWS_MAX_THREADS 8192 /* sanity clamp */
53
54 #if HAVE_BIGENDIAN
55 #define ALT32_CORR (-1)
56 #else
57 #define ALT32_CORR 1
58 #endif
59
60 #if ARCH_X86_64
61 # define APCK_PTR2 8
62 # define APCK_COEF 16
63 # define APCK_SIZE 24
64 #else
65 # define APCK_PTR2 4
66 # define APCK_COEF 8
67 # define APCK_SIZE 16
68 #endif
69
70 #define RETCODE_USE_CASCADE -12345
71
72 typedef struct SwsInternal SwsInternal;
73
74 1605564 static inline SwsInternal *sws_internal(const SwsContext *sws)
75 {
76 1605564 return (SwsInternal *) sws;
77 }
78
79 typedef struct Range {
80 unsigned int start;
81 unsigned int len;
82 } Range;
83
84 typedef struct RangeList {
85 Range *ranges;
86 unsigned int nb_ranges;
87 int ranges_allocated;
88 } RangeList;
89
90 int ff_range_add(RangeList *r, unsigned int start, unsigned int len);
91
92 typedef int (*SwsFunc)(SwsInternal *c, const uint8_t *const src[],
93 const int srcStride[], int srcSliceY, int srcSliceH,
94 uint8_t *const dst[], const int dstStride[]);
95
96 /**
97 * Write one line of horizontally scaled data to planar output
98 * without any additional vertical scaling (or point-scaling).
99 *
100 * @param src scaled source data, 15 bits for 8-10-bit output,
101 * 19 bits for 16-bit output (in int32_t)
102 * @param dest pointer to the output plane. For >8-bit
103 * output, this is in uint16_t
104 * @param dstW width of destination in pixels
105 * @param dither ordered dither array of type int16_t and size 8
106 * @param offset Dither offset
107 */
108 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
109 const uint8_t *dither, int offset);
110
111 /**
112 * Write one line of horizontally scaled data to planar output
113 * with multi-point vertical scaling between input pixels.
114 *
115 * @param filter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
116 * @param src scaled luma (Y) or alpha (A) source data, 15 bits for
117 * 8-10-bit output, 19 bits for 16-bit output (in int32_t)
118 * @param filterSize number of vertical input lines to scale
119 * @param dest pointer to output plane. For >8-bit
120 * output, this is in uint16_t
121 * @param dstW width of destination pixels
122 * @param offset Dither offset
123 */
124 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
125 const int16_t **src, uint8_t *dest, int dstW,
126 const uint8_t *dither, int offset);
127
128 /**
129 * Write one line of horizontally scaled chroma to interleaved output
130 * with multi-point vertical scaling between input pixels.
131 *
132 * @param dstFormat destination pixel format
133 * @param chrDither ordered dither array of type uint8_t and size 8
134 * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
135 * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit
136 * output, 19 bits for 16-bit output (in int32_t)
137 * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit
138 * output, 19 bits for 16-bit output (in int32_t)
139 * @param chrFilterSize number of vertical chroma input lines to scale
140 * @param dest pointer to the output plane. For >8-bit
141 * output, this is in uint16_t
142 * @param dstW width of chroma planes
143 */
144 typedef void (*yuv2interleavedX_fn)(enum AVPixelFormat dstFormat,
145 const uint8_t *chrDither,
146 const int16_t *chrFilter,
147 int chrFilterSize,
148 const int16_t **chrUSrc,
149 const int16_t **chrVSrc,
150 uint8_t *dest, int dstW);
151
152 /**
153 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
154 * output without any additional vertical scaling (or point-scaling). Note
155 * that this function may do chroma scaling, see the "uvalpha" argument.
156 *
157 * @param c SWS scaling context
158 * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
159 * 19 bits for 16-bit output (in int32_t)
160 * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
161 * 19 bits for 16-bit output (in int32_t)
162 * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
163 * 19 bits for 16-bit output (in int32_t)
164 * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
165 * 19 bits for 16-bit output (in int32_t)
166 * @param dest pointer to the output plane. For 16-bit output, this is
167 * uint16_t
168 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
169 * to write into dest[]
170 * @param uvalpha chroma scaling coefficient for the second line of chroma
171 * pixels, either 2048 or 0. If 0, one chroma input is used
172 * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
173 * is set, it generates 1 output pixel). If 2048, two chroma
174 * input pixels should be averaged for 2 output pixels (this
175 * only happens if SWS_FLAG_FULL_CHR_INT is not set)
176 * @param y vertical line number for this output. This does not need
177 * to be used to calculate the offset in the destination,
178 * but can be used to generate comfort noise using dithering
179 * for some output formats.
180 */
181 typedef void (*yuv2packed1_fn)(SwsInternal *c, const int16_t *lumSrc,
182 const int16_t *chrUSrc[2],
183 const int16_t *chrVSrc[2],
184 const int16_t *alpSrc, uint8_t *dest,
185 int dstW, int uvalpha, int y);
186 /**
187 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
188 * output by doing bilinear scaling between two input lines.
189 *
190 * @param c SWS scaling context
191 * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
192 * 19 bits for 16-bit output (in int32_t)
193 * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
194 * 19 bits for 16-bit output (in int32_t)
195 * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
196 * 19 bits for 16-bit output (in int32_t)
197 * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
198 * 19 bits for 16-bit output (in int32_t)
199 * @param dest pointer to the output plane. For 16-bit output, this is
200 * uint16_t
201 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
202 * to write into dest[]
203 * @param yalpha luma/alpha scaling coefficients for the second input line.
204 * The first line's coefficients can be calculated by using
205 * 4096 - yalpha
206 * @param uvalpha chroma scaling coefficient for the second input line. The
207 * first line's coefficients can be calculated by using
208 * 4096 - uvalpha
209 * @param y vertical line number for this output. This does not need
210 * to be used to calculate the offset in the destination,
211 * but can be used to generate comfort noise using dithering
212 * for some output formats.
213 */
214 typedef void (*yuv2packed2_fn)(SwsInternal *c, const int16_t *lumSrc[2],
215 const int16_t *chrUSrc[2],
216 const int16_t *chrVSrc[2],
217 const int16_t *alpSrc[2],
218 uint8_t *dest,
219 int dstW, int yalpha, int uvalpha, int y);
220 /**
221 * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
222 * output by doing multi-point vertical scaling between input pixels.
223 *
224 * @param c SWS scaling context
225 * @param lumFilter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
226 * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
227 * 19 bits for 16-bit output (in int32_t)
228 * @param lumFilterSize number of vertical luma/alpha input lines to scale
229 * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
230 * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
231 * 19 bits for 16-bit output (in int32_t)
232 * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
233 * 19 bits for 16-bit output (in int32_t)
234 * @param chrFilterSize number of vertical chroma input lines to scale
235 * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
236 * 19 bits for 16-bit output (in int32_t)
237 * @param dest pointer to the output plane. For 16-bit output, this is
238 * uint16_t
239 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
240 * to write into dest[]
241 * @param y vertical line number for this output. This does not need
242 * to be used to calculate the offset in the destination,
243 * but can be used to generate comfort noise using dithering
244 * or some output formats.
245 */
246 typedef void (*yuv2packedX_fn)(SwsInternal *c, const int16_t *lumFilter,
247 const int16_t **lumSrc, int lumFilterSize,
248 const int16_t *chrFilter,
249 const int16_t **chrUSrc,
250 const int16_t **chrVSrc, int chrFilterSize,
251 const int16_t **alpSrc, uint8_t *dest,
252 int dstW, int y);
253
254 /**
255 * Write one line of horizontally scaled Y/U/V/A to YUV/RGB
256 * output by doing multi-point vertical scaling between input pixels.
257 *
258 * @param c SWS scaling context
259 * @param lumFilter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
260 * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
261 * 19 bits for 16-bit output (in int32_t)
262 * @param lumFilterSize number of vertical luma/alpha input lines to scale
263 * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
264 * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
265 * 19 bits for 16-bit output (in int32_t)
266 * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
267 * 19 bits for 16-bit output (in int32_t)
268 * @param chrFilterSize number of vertical chroma input lines to scale
269 * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
270 * 19 bits for 16-bit output (in int32_t)
271 * @param dest pointer to the output planes. For 16-bit output, this is
272 * uint16_t
273 * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
274 * to write into dest[]
275 * @param y vertical line number for this output. This does not need
276 * to be used to calculate the offset in the destination,
277 * but can be used to generate comfort noise using dithering
278 * or some output formats.
279 */
280 typedef void (*yuv2anyX_fn)(SwsInternal *c, const int16_t *lumFilter,
281 const int16_t **lumSrc, int lumFilterSize,
282 const int16_t *chrFilter,
283 const int16_t **chrUSrc,
284 const int16_t **chrVSrc, int chrFilterSize,
285 const int16_t **alpSrc, uint8_t **dest,
286 int dstW, int y);
287
288 /**
289 * Unscaled conversion of luma/alpha plane to YV12 for horizontal scaler.
290 */
291 typedef void (*planar1_YV12_fn)(uint8_t *dst, const uint8_t *src, const uint8_t *src2,
292 const uint8_t *src3, int width, uint32_t *pal,
293 void *opaque);
294
295 /**
296 * Unscaled conversion of chroma plane to YV12 for horizontal scaler.
297 */
298 typedef void (*planar2_YV12_fn)(uint8_t *dst, uint8_t *dst2, const uint8_t *src,
299 const uint8_t *src2, const uint8_t *src3,
300 int width, uint32_t *pal, void *opaque);
301
302 /**
303 * Unscaled conversion of arbitrary planar data (e.g. RGBA) to YV12, through
304 * conversion using the given color matrix.
305 */
306 typedef void (*planarX_YV12_fn)(uint8_t *dst, const uint8_t *src[4], int width,
307 int32_t *rgb2yuv, void *opaque);
308
309 typedef void (*planarX2_YV12_fn)(uint8_t *dst, uint8_t *dst2,
310 const uint8_t *src[4], int width,
311 int32_t *rgb2yuv, void *opaque);
312
313 struct SwsSlice;
314 struct SwsFilterDescriptor;
315
316 /* This struct should be aligned on at least a 32-byte boundary. */
317 struct SwsInternal {
318 /* Currently active user-facing options. Also contains AVClass */
319 SwsContext opts;
320
321 /* Parent context (for slice contexts) */
322 SwsContext *parent;
323
324 AVSliceThread *slicethread;
325 SwsContext **slice_ctx;
326 int *slice_err;
327 int nb_slice_ctx;
328
329 /* Scaling graph, reinitialized dynamically as needed. */
330 SwsGraph *graph[2]; /* top, bottom fields */
331
332 // values passed to current sws_receive_slice() call
333 int dst_slice_start;
334 int dst_slice_height;
335
336 /**
337 * Note that src, dst, srcStride, dstStride will be copied in the
338 * sws_scale() wrapper so they can be freely modified here.
339 */
340 SwsFunc convert_unscaled;
341 int chrSrcW; ///< Width of source chroma planes.
342 int chrSrcH; ///< Height of source chroma planes.
343 int chrDstW; ///< Width of destination chroma planes.
344 int chrDstH; ///< Height of destination chroma planes.
345 int lumXInc, chrXInc;
346 int lumYInc, chrYInc;
347 int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
348 int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
349 int dstBpc, srcBpc;
350 int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
351 int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
352 int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
353 int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
354 int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
355 int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
356
357 AVFrame *frame_src;
358 AVFrame *frame_dst;
359
360 RangeList src_ranges;
361
362 /* The cascaded_* fields allow spliting a scaler task into multiple
363 * sequential steps, this is for example used to limit the maximum
364 * downscaling factor that needs to be supported in one scaler.
365 */
366 SwsContext *cascaded_context[3];
367 int cascaded_tmpStride[2][4];
368 uint8_t *cascaded_tmp[2][4];
369 int cascaded_mainindex;
370
371 double gamma_value;
372 int is_internal_gamma;
373 uint16_t *gamma;
374 uint16_t *inv_gamma;
375
376 int numDesc;
377 int descIndex[2];
378 int numSlice;
379 struct SwsSlice *slice;
380 struct SwsFilterDescriptor *desc;
381
382 uint32_t pal_yuv[256];
383 uint32_t pal_rgb[256];
384
385 float uint2float_lut[256];
386
387 /**
388 * @name Scaled horizontal lines ring buffer.
389 * The horizontal scaler keeps just enough scaled lines in a ring buffer
390 * so they may be passed to the vertical scaler. The pointers to the
391 * allocated buffers for each line are duplicated in sequence in the ring
392 * buffer to simplify indexing and avoid wrapping around between lines
393 * inside the vertical scaler code. The wrapping is done before the
394 * vertical scaler is called.
395 */
396 //@{
397 int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
398 int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
399 //@}
400
401 uint8_t *formatConvBuffer;
402 int needAlpha;
403
404 /**
405 * @name Horizontal and vertical filters.
406 * To better understand the following fields, here is a pseudo-code of
407 * their usage in filtering a horizontal line:
408 * @code
409 * for (i = 0; i < width; i++) {
410 * dst[i] = 0;
411 * for (j = 0; j < filterSize; j++)
412 * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
413 * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
414 * }
415 * @endcode
416 */
417 //@{
418 int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
419 int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
420 int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
421 int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
422 int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
423 int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
424 int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
425 int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
426 int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
427 int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
428 int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
429 int vChrFilterSize; ///< Vertical filter size for chroma pixels.
430 //@}
431
432 int lumMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
433 int chrMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
434 uint8_t *lumMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
435 uint8_t *chrMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
436
437 int canMMXEXTBeUsed;
438 int warned_unuseable_bilinear;
439
440 int dstY; ///< Last destination vertical line output from last slice.
441 void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
442 // alignment ensures the offset can be added in a single
443 // instruction on e.g. ARM
444 DECLARE_ALIGNED(16, int, table_gV)[256 + 2*YUVRGB_TABLE_HEADROOM];
445 uint8_t *table_rV[256 + 2*YUVRGB_TABLE_HEADROOM];
446 uint8_t *table_gU[256 + 2*YUVRGB_TABLE_HEADROOM];
447 uint8_t *table_bU[256 + 2*YUVRGB_TABLE_HEADROOM];
448 DECLARE_ALIGNED(16, int32_t, input_rgb2yuv_table)[16+40*4]; // This table can contain both C and SIMD formatted values, the C vales are always at the XY_IDX points
449 #define RY_IDX 0
450 #define GY_IDX 1
451 #define BY_IDX 2
452 #define RU_IDX 3
453 #define GU_IDX 4
454 #define BU_IDX 5
455 #define RV_IDX 6
456 #define GV_IDX 7
457 #define BV_IDX 8
458 #define RGB2YUV_SHIFT 15
459
460 int *dither_error[4];
461
462 //Colorspace stuff
463 int contrast, brightness, saturation; // for sws_getColorspaceDetails
464 int srcColorspaceTable[4];
465 int dstColorspaceTable[4];
466 int src0Alpha;
467 int dst0Alpha;
468 int srcXYZ;
469 int dstXYZ;
470 int yuv2rgb_y_offset;
471 int yuv2rgb_y_coeff;
472 int yuv2rgb_v2r_coeff;
473 int yuv2rgb_v2g_coeff;
474 int yuv2rgb_u2g_coeff;
475 int yuv2rgb_u2b_coeff;
476
477 #define RED_DITHER "0*8"
478 #define GREEN_DITHER "1*8"
479 #define BLUE_DITHER "2*8"
480 #define Y_COEFF "3*8"
481 #define VR_COEFF "4*8"
482 #define UB_COEFF "5*8"
483 #define VG_COEFF "6*8"
484 #define UG_COEFF "7*8"
485 #define Y_OFFSET "8*8"
486 #define U_OFFSET "9*8"
487 #define V_OFFSET "10*8"
488 #define LUM_MMX_FILTER_OFFSET "11*8"
489 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)
490 #define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"
491 #define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"
492 #define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"
493 #define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"
494 #define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"
495 #define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"
496 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"
497 #define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"
498 #define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"
499 #define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"
500 #define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"
501 #define DITHER32_INT (11*8+4*4*MAX_FILTER_SIZE*3+80) // value equal to above, used for checking that the struct hasn't been changed by mistake
502
503 DECLARE_ALIGNED(8, uint64_t, redDither);
504 DECLARE_ALIGNED(8, uint64_t, greenDither);
505 DECLARE_ALIGNED(8, uint64_t, blueDither);
506
507 DECLARE_ALIGNED(8, uint64_t, yCoeff);
508 DECLARE_ALIGNED(8, uint64_t, vrCoeff);
509 DECLARE_ALIGNED(8, uint64_t, ubCoeff);
510 DECLARE_ALIGNED(8, uint64_t, vgCoeff);
511 DECLARE_ALIGNED(8, uint64_t, ugCoeff);
512 DECLARE_ALIGNED(8, uint64_t, yOffset);
513 DECLARE_ALIGNED(8, uint64_t, uOffset);
514 DECLARE_ALIGNED(8, uint64_t, vOffset);
515 int32_t lumMmxFilter[4 * MAX_FILTER_SIZE];
516 int32_t chrMmxFilter[4 * MAX_FILTER_SIZE];
517 int dstW_mmx;
518 DECLARE_ALIGNED(8, uint64_t, esp);
519 DECLARE_ALIGNED(8, uint64_t, vRounder);
520 DECLARE_ALIGNED(8, uint64_t, u_temp);
521 DECLARE_ALIGNED(8, uint64_t, v_temp);
522 DECLARE_ALIGNED(8, uint64_t, y_temp);
523 int32_t alpMmxFilter[4 * MAX_FILTER_SIZE];
524 // alignment of these values is not necessary, but merely here
525 // to maintain the same offset across x8632 and x86-64. Once we
526 // use proper offset macros in the asm, they can be removed.
527 DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
528 DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
529 DECLARE_ALIGNED(8, uint16_t, dither16)[8];
530 DECLARE_ALIGNED(8, uint32_t, dither32)[8];
531
532 const uint8_t *chrDither8, *lumDither8;
533
534 #if HAVE_ALTIVEC
535 vector signed short CY;
536 vector signed short CRV;
537 vector signed short CBU;
538 vector signed short CGU;
539 vector signed short CGV;
540 vector signed short OY;
541 vector unsigned short CSHIFT;
542 vector signed short *vYCoeffsBank, *vCCoeffsBank;
543 #endif
544
545 int use_mmx_vfilter;
546
547 /* pre defined color-spaces gamma */
548 #define XYZ_GAMMA (2.6f)
549 #define RGB_GAMMA (2.2f)
550 uint16_t *xyzgamma;
551 uint16_t *rgbgamma;
552 uint16_t *xyzgammainv;
553 uint16_t *rgbgammainv;
554 int16_t xyz2rgb_matrix[3][4];
555 int16_t rgb2xyz_matrix[3][4];
556
557 /* function pointers for swscale() */
558 yuv2planar1_fn yuv2plane1;
559 yuv2planarX_fn yuv2planeX;
560 yuv2interleavedX_fn yuv2nv12cX;
561 yuv2packed1_fn yuv2packed1;
562 yuv2packed2_fn yuv2packed2;
563 yuv2packedX_fn yuv2packedX;
564 yuv2anyX_fn yuv2anyX;
565
566 /// Opaque data pointer passed to all input functions.
567 void *input_opaque;
568
569 planar1_YV12_fn lumToYV12;
570 planar1_YV12_fn alpToYV12;
571 planar2_YV12_fn chrToYV12;
572
573 /**
574 * Functions to read planar input, such as planar RGB, and convert
575 * internally to Y/UV/A.
576 */
577 /** @{ */
578 planarX_YV12_fn readLumPlanar;
579 planarX_YV12_fn readAlpPlanar;
580 planarX2_YV12_fn readChrPlanar;
581 /** @} */
582
583 /**
584 * Scale one horizontal line of input data using a bilinear filter
585 * to produce one line of output data. Compared to SwsInternal->hScale(),
586 * please take note of the following caveats when using these:
587 * - Scaling is done using only 7 bits instead of 14-bit coefficients.
588 * - You can use no more than 5 input pixels to produce 4 output
589 * pixels. Therefore, this filter should not be used for downscaling
590 * by more than ~20% in width (because that equals more than 5/4th
591 * downscaling and thus more than 5 pixels input per 4 pixels output).
592 * - In general, bilinear filters create artifacts during downscaling
593 * (even when <20%), because one output pixel will span more than one
594 * input pixel, and thus some pixels will need edges of both neighbor
595 * pixels to interpolate the output pixel. Since you can use at most
596 * two input pixels per output pixel in bilinear scaling, this is
597 * impossible and thus downscaling by any size will create artifacts.
598 * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
599 * in SwsInternal->flags.
600 */
601 /** @{ */
602 void (*hyscale_fast)(SwsInternal *c,
603 int16_t *dst, int dstWidth,
604 const uint8_t *src, int srcW, int xInc);
605 void (*hcscale_fast)(SwsInternal *c,
606 int16_t *dst1, int16_t *dst2, int dstWidth,
607 const uint8_t *src1, const uint8_t *src2,
608 int srcW, int xInc);
609 /** @} */
610
611 /**
612 * Scale one horizontal line of input data using a filter over the input
613 * lines, to produce one (differently sized) line of output data.
614 *
615 * @param dst pointer to destination buffer for horizontally scaled
616 * data. If the number of bits per component of one
617 * destination pixel (SwsInternal->dstBpc) is <= 10, data
618 * will be 15 bpc in 16 bits (int16_t) width. Else (i.e.
619 * SwsInternal->dstBpc == 16), data will be 19bpc in
620 * 32 bits (int32_t) width.
621 * @param dstW width of destination image
622 * @param src pointer to source data to be scaled. If the number of
623 * bits per component of a source pixel (SwsInternal->srcBpc)
624 * is 8, this is 8bpc in 8 bits (uint8_t) width. Else
625 * (i.e. SwsInternal->dstBpc > 8), this is native depth
626 * in 16 bits (uint16_t) width. In other words, for 9-bit
627 * YUV input, this is 9bpc, for 10-bit YUV input, this is
628 * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
629 * @param filter filter coefficients to be used per output pixel for
630 * scaling. This contains 14bpp filtering coefficients.
631 * Guaranteed to contain dstW * filterSize entries.
632 * @param filterPos position of the first input pixel to be used for
633 * each output pixel during scaling. Guaranteed to
634 * contain dstW entries.
635 * @param filterSize the number of input coefficients to be used (and
636 * thus the number of input pixels to be used) for
637 * creating a single output pixel. Is aligned to 4
638 * (and input coefficients thus padded with zeroes)
639 * to simplify creating SIMD code.
640 */
641 /** @{ */
642 void (*hyScale)(SwsInternal *c, int16_t *dst, int dstW,
643 const uint8_t *src, const int16_t *filter,
644 const int32_t *filterPos, int filterSize);
645 void (*hcScale)(SwsInternal *c, int16_t *dst, int dstW,
646 const uint8_t *src, const int16_t *filter,
647 const int32_t *filterPos, int filterSize);
648 /** @} */
649
650 /**
651 * Color range conversion functions if needed.
652 * If SwsInternal->dstBpc is > 14:
653 * - int16_t *dst (data is 15 bpc)
654 * - uint16_t coeff
655 * - int32_t offset
656 * Otherwise (SwsInternal->dstBpc is <= 14):
657 * - int32_t *dst (data is 19 bpc)
658 * - uint32_t coeff
659 * - int64_t offset
660 */
661 /** @{ */
662 void (*lumConvertRange)(int16_t *dst, int width,
663 uint32_t coeff, int64_t offset);
664 void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width,
665 uint32_t coeff, int64_t offset);
666 /** @} */
667
668 uint32_t lumConvertRange_coeff;
669 uint32_t chrConvertRange_coeff;
670 int64_t lumConvertRange_offset;
671 int64_t chrConvertRange_offset;
672
673 int needs_hcscale; ///< Set if there are chroma planes to be converted.
674
675 // scratch buffer for converting packed rgb0 sources
676 // filled with a copy of the input frame + fully opaque alpha,
677 // then passed as input to further conversion
678 uint8_t *rgb0_scratch;
679 unsigned int rgb0_scratch_allocated;
680
681 // scratch buffer for converting XYZ sources
682 // filled with the input converted to rgb48
683 // then passed as input to further conversion
684 uint8_t *xyz_scratch;
685 unsigned int xyz_scratch_allocated;
686
687 unsigned int dst_slice_align;
688 atomic_int stride_unaligned_warned;
689 atomic_int data_unaligned_warned;
690 int color_conversion_warned;
691
692 Half2FloatTables *h2f_tables;
693 };
694 //FIXME check init (where 0)
695
696 static_assert(offsetof(SwsInternal, redDither) + DITHER32_INT == offsetof(SwsInternal, dither32),
697 "dither32 must be at the same offset as redDither + DITHER32_INT");
698
699 #if ARCH_X86_64
700 /* x86 yuv2gbrp uses the SwsInternal for yuv coefficients
701 if struct offsets change the asm needs to be updated too */
702 static_assert(offsetof(SwsInternal, yuv2rgb_y_offset) == 40348,
703 "yuv2rgb_y_offset must be updated in x86 asm");
704 #endif
705
706 SwsFunc ff_yuv2rgb_get_func_ptr(SwsInternal *c);
707 int ff_yuv2rgb_c_init_tables(SwsInternal *c, const int inv_table[4],
708 int fullRange, int brightness,
709 int contrast, int saturation);
710 void ff_yuv2rgb_init_tables_ppc(SwsInternal *c, const int inv_table[4],
711 int brightness, int contrast, int saturation);
712
713 void ff_updateMMXDitherTables(SwsInternal *c, int dstY);
714
715 void ff_update_palette(SwsInternal *c, const uint32_t *pal);
716
717 av_cold void ff_sws_init_range_convert(SwsInternal *c);
718 av_cold void ff_sws_init_range_convert_aarch64(SwsInternal *c);
719 av_cold void ff_sws_init_range_convert_loongarch(SwsInternal *c);
720 av_cold void ff_sws_init_range_convert_riscv(SwsInternal *c);
721 av_cold void ff_sws_init_range_convert_x86(SwsInternal *c);
722
723 SwsFunc ff_yuv2rgb_init_x86(SwsInternal *c);
724 SwsFunc ff_yuv2rgb_init_ppc(SwsInternal *c);
725 SwsFunc ff_yuv2rgb_init_loongarch(SwsInternal *c);
726
727 465832 static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
728 {
729 465832 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
730
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465832 av_assert0(desc);
731 465832 return desc->comp[0].depth == 16;
732 }
733
734 5658 static av_always_inline int is32BPS(enum AVPixelFormat pix_fmt)
735 {
736 5658 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
737
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5658 av_assert0(desc);
738 5658 return desc->comp[0].depth == 32;
739 }
740
741 626921 static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt)
742 {
743 626921 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
744
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626921 av_assert0(desc);
745
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626921 return desc->comp[0].depth >= 9 && desc->comp[0].depth <= 14;
746 }
747
748 4016473 static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
749 {
750 4016473 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
751
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4016473 av_assert0(desc);
752 4016473 return desc->flags & AV_PIX_FMT_FLAG_BE;
753 }
754
755 1373223 static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
756 {
757 1373223 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
758
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1373223 av_assert0(desc);
759
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1373223 return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
760 }
761
762 1349058 static av_always_inline int isPlanarYUV(enum AVPixelFormat pix_fmt)
763 {
764 1349058 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
765
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1349058 av_assert0(desc);
766
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1349058 return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
767 }
768
769 /*
770 * Identity semi-planar YUV formats. Specifically, those are YUV formats
771 * where the second and third components (U & V) are on the same plane.
772 */
773 489044 static av_always_inline int isSemiPlanarYUV(enum AVPixelFormat pix_fmt)
774 {
775 489044 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
776
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489044 av_assert0(desc);
777
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489044 return (isPlanarYUV(pix_fmt) && desc->comp[1].plane == desc->comp[2].plane);
778 }
779
780 243 static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
781 {
782 243 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
783
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243 av_assert0(desc);
784 243 return (desc->flags & AV_PIX_FMT_FLAG_RGB);
785 }
786
787 827404 static av_always_inline int isGray(enum AVPixelFormat pix_fmt)
788 {
789 827404 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
790
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827404 av_assert0(desc);
791 1652892 return !(desc->flags & AV_PIX_FMT_FLAG_PAL) &&
792
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825488 !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL) &&
793
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825474 desc->nb_components <= 2 &&
794
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1652892 pix_fmt != AV_PIX_FMT_MONOBLACK &&
795 pix_fmt != AV_PIX_FMT_MONOWHITE;
796 }
797
798 41166 static av_always_inline int isRGBinInt(enum AVPixelFormat pix_fmt)
799 {
800
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41153 return pix_fmt == AV_PIX_FMT_RGB48BE ||
801
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40660 pix_fmt == AV_PIX_FMT_RGB48LE ||
802
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35810 pix_fmt == AV_PIX_FMT_RGB32 ||
803
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35805 pix_fmt == AV_PIX_FMT_RGB32_1 ||
804
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16991 pix_fmt == AV_PIX_FMT_RGB24 ||
805
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16990 pix_fmt == AV_PIX_FMT_RGB565BE ||
806
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14915 pix_fmt == AV_PIX_FMT_RGB565LE ||
807
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14914 pix_fmt == AV_PIX_FMT_RGB555BE ||
808
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5929 pix_fmt == AV_PIX_FMT_RGB555LE ||
809
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5928 pix_fmt == AV_PIX_FMT_RGB444BE ||
810
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5927 pix_fmt == AV_PIX_FMT_RGB444LE ||
811
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5924 pix_fmt == AV_PIX_FMT_RGB8 ||
812
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5923 pix_fmt == AV_PIX_FMT_RGB4 ||
813
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5921 pix_fmt == AV_PIX_FMT_RGB4_BYTE ||
814
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5908 pix_fmt == AV_PIX_FMT_RGBA64BE ||
815
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5905 pix_fmt == AV_PIX_FMT_RGBA64LE ||
816
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82319 pix_fmt == AV_PIX_FMT_MONOBLACK ||
817 pix_fmt == AV_PIX_FMT_MONOWHITE;
818 }
819
820 27644 static av_always_inline int isBGRinInt(enum AVPixelFormat pix_fmt)
821 {
822
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27643 return pix_fmt == AV_PIX_FMT_BGR48BE ||
823
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27640 pix_fmt == AV_PIX_FMT_BGR48LE ||
824
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27437 pix_fmt == AV_PIX_FMT_BGR32 ||
825
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27375 pix_fmt == AV_PIX_FMT_BGR32_1 ||
826
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25836 pix_fmt == AV_PIX_FMT_BGR24 ||
827
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25835 pix_fmt == AV_PIX_FMT_BGR565BE ||
828
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25834 pix_fmt == AV_PIX_FMT_BGR565LE ||
829
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25833 pix_fmt == AV_PIX_FMT_BGR555BE ||
830
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22642 pix_fmt == AV_PIX_FMT_BGR555LE ||
831
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22641 pix_fmt == AV_PIX_FMT_BGR444BE ||
832
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22640 pix_fmt == AV_PIX_FMT_BGR444LE ||
833
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22637 pix_fmt == AV_PIX_FMT_BGR8 ||
834
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22636 pix_fmt == AV_PIX_FMT_BGR4 ||
835
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22634 pix_fmt == AV_PIX_FMT_BGR4_BYTE ||
836
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22633 pix_fmt == AV_PIX_FMT_BGRA64BE ||
837
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22630 pix_fmt == AV_PIX_FMT_BGRA64LE ||
838
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55287 pix_fmt == AV_PIX_FMT_MONOBLACK ||
839 pix_fmt == AV_PIX_FMT_MONOWHITE;
840 }
841
842 50727 static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
843 {
844 50727 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
845
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50727 av_assert0(desc);
846 50727 return !!(desc->flags & AV_PIX_FMT_FLAG_BAYER);
847 }
848
849 static av_always_inline int isBayer16BPS(enum AVPixelFormat pix_fmt)
850 {
851 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
852 av_assert0(desc);
853 return desc->comp[1].depth == 8;
854 }
855
856 28948414 static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
857 {
858 28948414 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
859
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28948414 av_assert0(desc);
860
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14367821 return (desc->flags & AV_PIX_FMT_FLAG_RGB) ||
861
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43316235 pix_fmt == AV_PIX_FMT_MONOBLACK || pix_fmt == AV_PIX_FMT_MONOWHITE;
862 }
863
864 56627 static av_always_inline int isFloat(enum AVPixelFormat pix_fmt)
865 {
866 56627 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
867
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56627 av_assert0(desc);
868 56627 return desc->flags & AV_PIX_FMT_FLAG_FLOAT;
869 }
870
871 20448 static av_always_inline int isFloat16(enum AVPixelFormat pix_fmt)
872 {
873 20448 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
874
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20448 av_assert0(desc);
875
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20448 return (desc->flags & AV_PIX_FMT_FLAG_FLOAT) && desc->comp[0].depth == 16;
876 }
877
878 417509 static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
879 {
880 417509 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
881
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417509 av_assert0(desc);
882
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417509 if (pix_fmt == AV_PIX_FMT_PAL8)
883 1079 return 1;
884 416430 return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
885 }
886
887 407749 static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
888 {
889 407749 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
890
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407749 av_assert0(desc);
891
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407749 return (desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
892
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315981 pix_fmt == AV_PIX_FMT_PAL8 ||
893
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815498 pix_fmt == AV_PIX_FMT_MONOBLACK || pix_fmt == AV_PIX_FMT_MONOWHITE;
894 }
895
896 409091 static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
897 {
898 409091 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
899
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409091 av_assert0(desc);
900
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409091 return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
901 }
902
903 24821 static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
904 {
905 24821 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
906
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24821 av_assert0(desc);
907 24821 return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) == AV_PIX_FMT_FLAG_RGB);
908 }
909
910 55353 static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
911 {
912 55353 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
913
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55353 av_assert0(desc);
914 55353 return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
915 (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB));
916 }
917
918 610065 static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
919 {
920
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610065 switch (pix_fmt) {
921 72815 case AV_PIX_FMT_PAL8:
922 case AV_PIX_FMT_BGR4_BYTE:
923 case AV_PIX_FMT_BGR8:
924 case AV_PIX_FMT_GRAY8:
925 case AV_PIX_FMT_RGB4_BYTE:
926 case AV_PIX_FMT_RGB8:
927 72815 return 1;
928 537250 default:
929 537250 return 0;
930 }
931 }
932
933 /*
934 * Identity formats where the data is in the high bits, and the low bits are shifted away.
935 */
936 12436 static av_always_inline int isDataInHighBits(enum AVPixelFormat pix_fmt)
937 {
938 int i;
939 12436 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
940
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12436 av_assert0(desc);
941
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12436 if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_HWACCEL))
942 20 return 0;
943
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32141 for (i = 0; i < desc->nb_components; i++) {
944
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25567 if (!desc->comp[i].shift)
945 5832 return 0;
946
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19735 if ((desc->comp[i].shift + desc->comp[i].depth) & 0x7)
947 10 return 0;
948 }
949 6574 return 1;
950 }
951
952 /*
953 * Identity formats where the chroma planes are swapped (CrCb order).
954 */
955 162045 static av_always_inline int isSwappedChroma(enum AVPixelFormat pix_fmt)
956 {
957 162045 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
958
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162045 av_assert0(desc);
959
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162045 if (!isYUV(pix_fmt))
960 118 return 0;
961
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161927 if ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) && desc->nb_components < 4)
962 3 return 0;
963
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161924 if (desc->nb_components < 3)
964 return 0;
965
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161924 if (!isPlanarYUV(pix_fmt) || isSemiPlanarYUV(pix_fmt))
966 161854 return desc->comp[1].offset > desc->comp[2].offset;
967 else
968 70 return desc->comp[1].plane > desc->comp[2].plane;
969 }
970
971 extern const uint64_t ff_dither4[2];
972 extern const uint64_t ff_dither8[2];
973
974 extern const uint8_t ff_dither_2x2_4[3][8];
975 extern const uint8_t ff_dither_2x2_8[3][8];
976 extern const uint8_t ff_dither_4x4_16[5][8];
977 extern const uint8_t ff_dither_8x8_32[9][8];
978 extern const uint8_t ff_dither_8x8_73[9][8];
979 extern const uint8_t ff_dither_8x8_128[9][8];
980 extern const uint8_t ff_dither_8x8_220[9][8];
981
982 extern const int32_t ff_yuv2rgb_coeffs[11][4];
983
984 extern const AVClass ff_sws_context_class;
985
986 int ff_sws_init_single_context(SwsContext *sws, SwsFilter *srcFilter,
987 SwsFilter *dstFilter);
988
989 /**
990 * Set c->convert_unscaled to an unscaled converter if one exists for the
991 * specific source and destination formats, bit depths, flags, etc.
992 */
993 void ff_get_unscaled_swscale(SwsInternal *c);
994 void ff_get_unscaled_swscale_ppc(SwsInternal *c);
995 void ff_get_unscaled_swscale_arm(SwsInternal *c);
996 void ff_get_unscaled_swscale_aarch64(SwsInternal *c);
997
998 void ff_sws_init_scale(SwsInternal *c);
999
1000 void ff_sws_init_input_funcs(SwsInternal *c,
1001 planar1_YV12_fn *lumToYV12,
1002 planar1_YV12_fn *alpToYV12,
1003 planar2_YV12_fn *chrToYV12,
1004 planarX_YV12_fn *readLumPlanar,
1005 planarX_YV12_fn *readAlpPlanar,
1006 planarX2_YV12_fn *readChrPlanar);
1007 void ff_sws_init_output_funcs(SwsInternal *c,
1008 yuv2planar1_fn *yuv2plane1,
1009 yuv2planarX_fn *yuv2planeX,
1010 yuv2interleavedX_fn *yuv2nv12cX,
1011 yuv2packed1_fn *yuv2packed1,
1012 yuv2packed2_fn *yuv2packed2,
1013 yuv2packedX_fn *yuv2packedX,
1014 yuv2anyX_fn *yuv2anyX);
1015 void ff_sws_init_swscale_ppc(SwsInternal *c);
1016 void ff_sws_init_swscale_vsx(SwsInternal *c);
1017 void ff_sws_init_swscale_x86(SwsInternal *c);
1018 void ff_sws_init_swscale_aarch64(SwsInternal *c);
1019 void ff_sws_init_swscale_arm(SwsInternal *c);
1020 void ff_sws_init_swscale_loongarch(SwsInternal *c);
1021 void ff_sws_init_swscale_riscv(SwsInternal *c);
1022
1023 void ff_hyscale_fast_c(SwsInternal *c, int16_t *dst, int dstWidth,
1024 const uint8_t *src, int srcW, int xInc);
1025 void ff_hcscale_fast_c(SwsInternal *c, int16_t *dst1, int16_t *dst2,
1026 int dstWidth, const uint8_t *src1,
1027 const uint8_t *src2, int srcW, int xInc);
1028 int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode,
1029 int16_t *filter, int32_t *filterPos,
1030 int numSplits);
1031 void ff_hyscale_fast_mmxext(SwsInternal *c, int16_t *dst,
1032 int dstWidth, const uint8_t *src,
1033 int srcW, int xInc);
1034 void ff_hcscale_fast_mmxext(SwsInternal *c, int16_t *dst1, int16_t *dst2,
1035 int dstWidth, const uint8_t *src1,
1036 const uint8_t *src2, int srcW, int xInc);
1037
1038 int ff_sws_alphablendaway(SwsInternal *c, const uint8_t *const src[],
1039 const int srcStride[], int srcSliceY, int srcSliceH,
1040 uint8_t *const dst[], const int dstStride[]);
1041
1042 void ff_copyPlane(const uint8_t *src, int srcStride,
1043 int srcSliceY, int srcSliceH, int width,
1044 uint8_t *dst, int dstStride);
1045
1046 void ff_xyz12Torgb48(const SwsInternal *c, uint8_t *dst, int dst_stride,
1047 const uint8_t *src, int src_stride, int w, int h);
1048
1049 void ff_rgb48Toxyz12(const SwsInternal *c, uint8_t *dst, int dst_stride,
1050 const uint8_t *src, int src_stride, int w, int h);
1051
1052 966 static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
1053 int alpha, int bits, const int big_endian)
1054 {
1055 966 uint8_t *ptr = plane + stride * y;
1056
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966 int v = alpha ? 0xFFFF>>(16-bits) : (1<<(bits-1));
1057
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966 if (big_endian != HAVE_BIGENDIAN)
1058 330 v = av_bswap16(v);
1059
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244154 for (int i = 0; i < height; i++) {
1060
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85046716 for (int j = 0; j < width; j++)
1061 84803528 AV_WN16(ptr + 2 * j, v);
1062 243188 ptr += stride;
1063 }
1064 966 }
1065
1066 92 static inline void fillPlane32(uint8_t *plane, int stride, int width, int height, int y,
1067 int alpha, int bits, const int big_endian, int is_float)
1068 {
1069 92 uint8_t *ptr = plane + stride * y;
1070 uint32_t v;
1071 92 uint32_t onef32 = 0x3f800000;
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92 if (is_float)
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92 v = alpha ? onef32 : 0;
1074 else
1075 v = alpha ? 0xFFFFFFFF>>(32-bits) : (1<<(bits-1));
1076
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92 if (big_endian != HAVE_BIGENDIAN)
1077 20 v = av_bswap32(v);
1078
1079
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26588 for (int i = 0; i < height; i++) {
1080
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9353088 for (int j = 0; j < width; j++)
1081 9326592 AV_WN32(ptr + 4 * j, v);
1082 26496 ptr += stride;
1083 }
1084 92 }
1085
1086
1087 #define MAX_SLICE_PLANES 4
1088
1089 /// Slice plane
1090 typedef struct SwsPlane
1091 {
1092 int available_lines; ///< max number of lines that can be hold by this plane
1093 int sliceY; ///< index of first line
1094 int sliceH; ///< number of lines
1095 uint8_t **line; ///< line buffer
1096 uint8_t **tmp; ///< Tmp line buffer used by mmx code
1097 } SwsPlane;
1098
1099 /**
1100 * Struct which defines a slice of an image to be scaled or an output for
1101 * a scaled slice.
1102 * A slice can also be used as intermediate ring buffer for scaling steps.
1103 */
1104 typedef struct SwsSlice
1105 {
1106 int width; ///< Slice line width
1107 int h_chr_sub_sample; ///< horizontal chroma subsampling factor
1108 int v_chr_sub_sample; ///< vertical chroma subsampling factor
1109 int is_ring; ///< flag to identify if this slice is a ring buffer
1110 int should_free_lines; ///< flag to identify if there are dynamic allocated lines
1111 enum AVPixelFormat fmt; ///< planes pixel format
1112 SwsPlane plane[MAX_SLICE_PLANES]; ///< color planes
1113 } SwsSlice;
1114
1115 /**
1116 * Struct which holds all necessary data for processing a slice.
1117 * A processing step can be a color conversion or horizontal/vertical scaling.
1118 */
1119 typedef struct SwsFilterDescriptor
1120 {
1121 SwsSlice *src; ///< Source slice
1122 SwsSlice *dst; ///< Output slice
1123
1124 int alpha; ///< Flag for processing alpha channel
1125 void *instance; ///< Filter instance data
1126
1127 /// Function for processing input slice sliceH lines starting from line sliceY
1128 int (*process)(SwsInternal *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH);
1129 } SwsFilterDescriptor;
1130
1131 // warp input lines in the form (src + width*i + j) to slice format (line[i][j])
1132 // relative=true means first line src[x][0] otherwise first line is src[x][lum/crh Y]
1133 int ff_init_slice_from_src(SwsSlice * s, uint8_t *const src[4], const int stride[4],
1134 int srcW, int lumY, int lumH, int chrY, int chrH, int relative);
1135
1136 // Initialize scaler filter descriptor chain
1137 int ff_init_filters(SwsInternal *c);
1138
1139 // Free all filter data
1140 int ff_free_filters(SwsInternal *c);
1141
1142 /*
1143 function for applying ring buffer logic into slice s
1144 It checks if the slice can hold more @lum lines, if yes
1145 do nothing otherwise remove @lum least used lines.
1146 It applies the same procedure for @chr lines.
1147 */
1148 int ff_rotate_slice(SwsSlice *s, int lum, int chr);
1149
1150 /// initializes gamma conversion descriptor
1151 int ff_init_gamma_convert(SwsFilterDescriptor *desc, SwsSlice * src, uint16_t *table);
1152
1153 /// initializes lum pixel format conversion descriptor
1154 int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal);
1155
1156 /// initializes lum horizontal scaling descriptor
1157 int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1158
1159 /// initializes chr pixel format conversion descriptor
1160 int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal);
1161
1162 /// initializes chr horizontal scaling descriptor
1163 int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1164
1165 int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst);
1166
1167 /// initializes vertical scaling descriptors
1168 int ff_init_vscale(SwsInternal *c, SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst);
1169
1170 /// setup vertical scaler functions
1171 void ff_init_vscale_pfn(SwsInternal *c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX,
1172 yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2,
1173 yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx);
1174
1175 void ff_sws_slice_worker(void *priv, int jobnr, int threadnr,
1176 int nb_jobs, int nb_threads);
1177
1178 int ff_swscale(SwsInternal *c, const uint8_t *const src[], const int srcStride[],
1179 int srcSliceY, int srcSliceH, uint8_t *const dst[],
1180 const int dstStride[], int dstSliceY, int dstSliceH);
1181
1182
1183 //number of extra lines to process
1184 #define MAX_LINES_AHEAD 4
1185
1186 //shuffle filter and filterPos for hyScale and hcScale filters in avx2
1187 int ff_shuffle_filter_coefficients(SwsInternal *c, int* filterPos, int filterSize, int16_t *filter, int dstW);
1188 #endif /* SWSCALE_SWSCALE_INTERNAL_H */
1189