FFmpeg
swscale_internal.h
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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 
26 #include "config.h"
27 #include "version.h"
28 
29 #include "libavutil/avassert.h"
30 #include "libavutil/avutil.h"
31 #include "libavutil/common.h"
32 #include "libavutil/frame.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/log.h"
35 #include "libavutil/mem_internal.h"
36 #include "libavutil/pixfmt.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/slicethread.h"
40 
41 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
42 
43 #define YUVRGB_TABLE_HEADROOM 512
44 #define YUVRGB_TABLE_LUMA_HEADROOM 512
45 
46 #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE
47 
48 #define DITHER1XBPP
49 
50 #if HAVE_BIGENDIAN
51 #define ALT32_CORR (-1)
52 #else
53 #define ALT32_CORR 1
54 #endif
55 
56 #if ARCH_X86_64
57 # define APCK_PTR2 8
58 # define APCK_COEF 16
59 # define APCK_SIZE 24
60 #else
61 # define APCK_PTR2 4
62 # define APCK_COEF 8
63 # define APCK_SIZE 16
64 #endif
65 
66 #define RETCODE_USE_CASCADE -12345
67 
68 struct SwsContext;
69 
70 typedef enum SwsDither {
78 } SwsDither;
79 
80 typedef enum SwsAlphaBlend {
86 
87 typedef struct Range {
88  unsigned int start;
89  unsigned int len;
90 } Range;
91 
92 typedef struct RangeList {
94  unsigned int nb_ranges;
96 } RangeList;
97 
98 int ff_range_add(RangeList *r, unsigned int start, unsigned int len);
99 
100 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
101  int srcStride[], int srcSliceY, int srcSliceH,
102  uint8_t *dst[], int dstStride[]);
103 
104 /**
105  * Write one line of horizontally scaled data to planar output
106  * without any additional vertical scaling (or point-scaling).
107  *
108  * @param src scaled source data, 15 bits for 8-10-bit output,
109  * 19 bits for 16-bit output (in int32_t)
110  * @param dest pointer to the output plane. For >8-bit
111  * output, this is in uint16_t
112  * @param dstW width of destination in pixels
113  * @param dither ordered dither array of type int16_t and size 8
114  * @param offset Dither offset
115  */
116 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
117  const uint8_t *dither, int offset);
118 
119 /**
120  * Write one line of horizontally scaled data to planar output
121  * with multi-point vertical scaling between input pixels.
122  *
123  * @param filter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
124  * @param src scaled luma (Y) or alpha (A) source data, 15 bits for
125  * 8-10-bit output, 19 bits for 16-bit output (in int32_t)
126  * @param filterSize number of vertical input lines to scale
127  * @param dest pointer to output plane. For >8-bit
128  * output, this is in uint16_t
129  * @param dstW width of destination pixels
130  * @param offset Dither offset
131  */
132 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
133  const int16_t **src, uint8_t *dest, int dstW,
134  const uint8_t *dither, int offset);
135 
136 /**
137  * Write one line of horizontally scaled chroma to interleaved output
138  * with multi-point vertical scaling between input pixels.
139  *
140  * @param dstFormat destination pixel format
141  * @param chrDither ordered dither array of type uint8_t and size 8
142  * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
143  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit
144  * output, 19 bits for 16-bit output (in int32_t)
145  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit
146  * output, 19 bits for 16-bit output (in int32_t)
147  * @param chrFilterSize number of vertical chroma input lines to scale
148  * @param dest pointer to the output plane. For >8-bit
149  * output, this is in uint16_t
150  * @param dstW width of chroma planes
151  */
153  const uint8_t *chrDither,
154  const int16_t *chrFilter,
155  int chrFilterSize,
156  const int16_t **chrUSrc,
157  const int16_t **chrVSrc,
158  uint8_t *dest, int dstW);
159 
160 /**
161  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
162  * output without any additional vertical scaling (or point-scaling). Note
163  * that this function may do chroma scaling, see the "uvalpha" argument.
164  *
165  * @param c SWS scaling context
166  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
167  * 19 bits for 16-bit output (in int32_t)
168  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
169  * 19 bits for 16-bit output (in int32_t)
170  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
171  * 19 bits for 16-bit output (in int32_t)
172  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
173  * 19 bits for 16-bit output (in int32_t)
174  * @param dest pointer to the output plane. For 16-bit output, this is
175  * uint16_t
176  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
177  * to write into dest[]
178  * @param uvalpha chroma scaling coefficient for the second line of chroma
179  * pixels, either 2048 or 0. If 0, one chroma input is used
180  * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
181  * is set, it generates 1 output pixel). If 2048, two chroma
182  * input pixels should be averaged for 2 output pixels (this
183  * only happens if SWS_FLAG_FULL_CHR_INT is not set)
184  * @param y vertical line number for this output. This does not need
185  * to be used to calculate the offset in the destination,
186  * but can be used to generate comfort noise using dithering
187  * for some output formats.
188  */
189 typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
190  const int16_t *chrUSrc[2],
191  const int16_t *chrVSrc[2],
192  const int16_t *alpSrc, uint8_t *dest,
193  int dstW, int uvalpha, int y);
194 /**
195  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
196  * output by doing bilinear scaling between two input lines.
197  *
198  * @param c SWS scaling context
199  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
200  * 19 bits for 16-bit output (in int32_t)
201  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
202  * 19 bits for 16-bit output (in int32_t)
203  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
204  * 19 bits for 16-bit output (in int32_t)
205  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
206  * 19 bits for 16-bit output (in int32_t)
207  * @param dest pointer to the output plane. For 16-bit output, this is
208  * uint16_t
209  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
210  * to write into dest[]
211  * @param yalpha luma/alpha scaling coefficients for the second input line.
212  * The first line's coefficients can be calculated by using
213  * 4096 - yalpha
214  * @param uvalpha chroma scaling coefficient for the second input line. The
215  * first line's coefficients can be calculated by using
216  * 4096 - uvalpha
217  * @param y vertical line number for this output. This does not need
218  * to be used to calculate the offset in the destination,
219  * but can be used to generate comfort noise using dithering
220  * for some output formats.
221  */
222 typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
223  const int16_t *chrUSrc[2],
224  const int16_t *chrVSrc[2],
225  const int16_t *alpSrc[2],
226  uint8_t *dest,
227  int dstW, int yalpha, int uvalpha, int y);
228 /**
229  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
230  * output by doing multi-point vertical scaling between input pixels.
231  *
232  * @param c SWS scaling context
233  * @param lumFilter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
234  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
235  * 19 bits for 16-bit output (in int32_t)
236  * @param lumFilterSize number of vertical luma/alpha input lines to scale
237  * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
238  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
239  * 19 bits for 16-bit output (in int32_t)
240  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
241  * 19 bits for 16-bit output (in int32_t)
242  * @param chrFilterSize number of vertical chroma input lines to scale
243  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
244  * 19 bits for 16-bit output (in int32_t)
245  * @param dest pointer to the output plane. For 16-bit output, this is
246  * uint16_t
247  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
248  * to write into dest[]
249  * @param y vertical line number for this output. This does not need
250  * to be used to calculate the offset in the destination,
251  * but can be used to generate comfort noise using dithering
252  * or some output formats.
253  */
254 typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
255  const int16_t **lumSrc, int lumFilterSize,
256  const int16_t *chrFilter,
257  const int16_t **chrUSrc,
258  const int16_t **chrVSrc, int chrFilterSize,
259  const int16_t **alpSrc, uint8_t *dest,
260  int dstW, int y);
261 
262 /**
263  * Write one line of horizontally scaled Y/U/V/A to YUV/RGB
264  * output by doing multi-point vertical scaling between input pixels.
265  *
266  * @param c SWS scaling context
267  * @param lumFilter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
268  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
269  * 19 bits for 16-bit output (in int32_t)
270  * @param lumFilterSize number of vertical luma/alpha input lines to scale
271  * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
272  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
273  * 19 bits for 16-bit output (in int32_t)
274  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
275  * 19 bits for 16-bit output (in int32_t)
276  * @param chrFilterSize number of vertical chroma input lines to scale
277  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
278  * 19 bits for 16-bit output (in int32_t)
279  * @param dest pointer to the output planes. For 16-bit output, this is
280  * uint16_t
281  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
282  * to write into dest[]
283  * @param y vertical line number for this output. This does not need
284  * to be used to calculate the offset in the destination,
285  * but can be used to generate comfort noise using dithering
286  * or some output formats.
287  */
288 typedef void (*yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter,
289  const int16_t **lumSrc, int lumFilterSize,
290  const int16_t *chrFilter,
291  const int16_t **chrUSrc,
292  const int16_t **chrVSrc, int chrFilterSize,
293  const int16_t **alpSrc, uint8_t **dest,
294  int dstW, int y);
295 
296 struct SwsSlice;
297 struct SwsFilterDescriptor;
298 
299 /* This struct should be aligned on at least a 32-byte boundary. */
300 typedef struct SwsContext {
301  /**
302  * info on struct for av_log
303  */
305 
307 
310  int *slice_err;
312 
313  // values passed to current sws_receive_slice() call
316 
317  /**
318  * Note that src, dst, srcStride, dstStride will be copied in the
319  * sws_scale() wrapper so they can be freely modified here.
320  */
322  int srcW; ///< Width of source luma/alpha planes.
323  int srcH; ///< Height of source luma/alpha planes.
324  int dstH; ///< Height of destination luma/alpha planes.
325  int chrSrcW; ///< Width of source chroma planes.
326  int chrSrcH; ///< Height of source chroma planes.
327  int chrDstW; ///< Width of destination chroma planes.
328  int chrDstH; ///< Height of destination chroma planes.
331  enum AVPixelFormat dstFormat; ///< Destination pixel format.
332  enum AVPixelFormat srcFormat; ///< Source pixel format.
333  int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
334  int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
336  int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
337  int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
338  int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
339  int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
340  int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
341  int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
342  int nb_threads; ///< Number of threads used for scaling
343  double param[2]; ///< Input parameters for scaling algorithms that need them.
344 
347 
349 
350  /* The cascaded_* fields allow spliting a scaler task into multiple
351  * sequential steps, this is for example used to limit the maximum
352  * downscaling factor that needs to be supported in one scaler.
353  */
356  uint8_t *cascaded_tmp[4];
358  uint8_t *cascaded1_tmp[4];
360 
361  double gamma_value;
364  uint16_t *gamma;
365  uint16_t *inv_gamma;
366 
367  int numDesc;
368  int descIndex[2];
369  int numSlice;
370  struct SwsSlice *slice;
372 
373  uint32_t pal_yuv[256];
374  uint32_t pal_rgb[256];
375 
376  float uint2float_lut[256];
377 
378  /**
379  * @name Scaled horizontal lines ring buffer.
380  * The horizontal scaler keeps just enough scaled lines in a ring buffer
381  * so they may be passed to the vertical scaler. The pointers to the
382  * allocated buffers for each line are duplicated in sequence in the ring
383  * buffer to simplify indexing and avoid wrapping around between lines
384  * inside the vertical scaler code. The wrapping is done before the
385  * vertical scaler is called.
386  */
387  //@{
388  int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
389  int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
390  //@}
391 
394 
395  /**
396  * @name Horizontal and vertical filters.
397  * To better understand the following fields, here is a pseudo-code of
398  * their usage in filtering a horizontal line:
399  * @code
400  * for (i = 0; i < width; i++) {
401  * dst[i] = 0;
402  * for (j = 0; j < filterSize; j++)
403  * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
404  * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
405  * }
406  * @endcode
407  */
408  //@{
409  int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
410  int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
411  int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
412  int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
413  int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
414  int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
415  int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
416  int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
417  int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
418  int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
419  int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
420  int vChrFilterSize; ///< Vertical filter size for chroma pixels.
421  //@}
422 
423  int lumMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
424  int chrMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
425  uint8_t *lumMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
426  uint8_t *chrMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
427 
430 
431  int dstY; ///< Last destination vertical line output from last slice.
432  int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
433  void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
434  // alignment ensures the offset can be added in a single
435  // instruction on e.g. ARM
437  uint8_t *table_rV[256 + 2*YUVRGB_TABLE_HEADROOM];
438  uint8_t *table_gU[256 + 2*YUVRGB_TABLE_HEADROOM];
439  uint8_t *table_bU[256 + 2*YUVRGB_TABLE_HEADROOM];
440  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
441 #define RY_IDX 0
442 #define GY_IDX 1
443 #define BY_IDX 2
444 #define RU_IDX 3
445 #define GU_IDX 4
446 #define BU_IDX 5
447 #define RV_IDX 6
448 #define GV_IDX 7
449 #define BV_IDX 8
450 #define RGB2YUV_SHIFT 15
451 
452  int *dither_error[4];
453 
454  //Colorspace stuff
455  int contrast, brightness, saturation; // for sws_getColorspaceDetails
458  int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
459  int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
462  int srcXYZ;
463  int dstXYZ;
474 
475 #define RED_DITHER "0*8"
476 #define GREEN_DITHER "1*8"
477 #define BLUE_DITHER "2*8"
478 #define Y_COEFF "3*8"
479 #define VR_COEFF "4*8"
480 #define UB_COEFF "5*8"
481 #define VG_COEFF "6*8"
482 #define UG_COEFF "7*8"
483 #define Y_OFFSET "8*8"
484 #define U_OFFSET "9*8"
485 #define V_OFFSET "10*8"
486 #define LUM_MMX_FILTER_OFFSET "11*8"
487 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)
488 #define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"
489 #define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"
490 #define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"
491 #define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"
492 #define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"
493 #define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"
494 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"
495 #define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"
496 #define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"
497 #define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"
498 #define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"
499 #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
500 
501  DECLARE_ALIGNED(8, uint64_t, redDither);
504 
505  DECLARE_ALIGNED(8, uint64_t, yCoeff);
506  DECLARE_ALIGNED(8, uint64_t, vrCoeff);
507  DECLARE_ALIGNED(8, uint64_t, ubCoeff);
508  DECLARE_ALIGNED(8, uint64_t, vgCoeff);
509  DECLARE_ALIGNED(8, uint64_t, ugCoeff);
510  DECLARE_ALIGNED(8, uint64_t, yOffset);
511  DECLARE_ALIGNED(8, uint64_t, uOffset);
512  DECLARE_ALIGNED(8, uint64_t, vOffset);
515  int dstW; ///< Width of destination luma/alpha planes.
516  DECLARE_ALIGNED(8, uint64_t, esp);
517  DECLARE_ALIGNED(8, uint64_t, vRounder);
518  DECLARE_ALIGNED(8, uint64_t, u_temp);
519  DECLARE_ALIGNED(8, uint64_t, v_temp);
520  DECLARE_ALIGNED(8, uint64_t, y_temp);
522  // alignment of these values is not necessary, but merely here
523  // to maintain the same offset across x8632 and x86-64. Once we
524  // use proper offset macros in the asm, they can be removed.
525  DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
526  DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
527  DECLARE_ALIGNED(8, uint16_t, dither16)[8];
528  DECLARE_ALIGNED(8, uint32_t, dither32)[8];
529 
530  const uint8_t *chrDither8, *lumDither8;
531 
532 #if HAVE_ALTIVEC
533  vector signed short CY;
534  vector signed short CRV;
535  vector signed short CBU;
536  vector signed short CGU;
537  vector signed short CGV;
538  vector signed short OY;
539  vector unsigned short CSHIFT;
540  vector signed short *vYCoeffsBank, *vCCoeffsBank;
541 #endif
542 
544 
545 /* pre defined color-spaces gamma */
546 #define XYZ_GAMMA (2.6f)
547 #define RGB_GAMMA (2.2f)
548  int16_t *xyzgamma;
549  int16_t *rgbgamma;
550  int16_t *xyzgammainv;
551  int16_t *rgbgammainv;
552  int16_t xyz2rgb_matrix[3][4];
553  int16_t rgb2xyz_matrix[3][4];
554 
555  /* function pointers for swscale() */
563 
564  /// Unscaled conversion of luma plane to YV12 for horizontal scaler.
565  void (*lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
566  int width, uint32_t *pal);
567  /// Unscaled conversion of alpha plane to YV12 for horizontal scaler.
568  void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
569  int width, uint32_t *pal);
570  /// Unscaled conversion of chroma planes to YV12 for horizontal scaler.
571  void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
572  const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
573  int width, uint32_t *pal);
574 
575  /**
576  * Functions to read planar input, such as planar RGB, and convert
577  * internally to Y/UV/A.
578  */
579  /** @{ */
580  void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
581  void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
582  int width, int32_t *rgb2yuv);
583  void (*readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
584  /** @} */
585 
586  /**
587  * Scale one horizontal line of input data using a bilinear filter
588  * to produce one line of output data. Compared to SwsContext->hScale(),
589  * please take note of the following caveats when using these:
590  * - Scaling is done using only 7 bits instead of 14-bit coefficients.
591  * - You can use no more than 5 input pixels to produce 4 output
592  * pixels. Therefore, this filter should not be used for downscaling
593  * by more than ~20% in width (because that equals more than 5/4th
594  * downscaling and thus more than 5 pixels input per 4 pixels output).
595  * - In general, bilinear filters create artifacts during downscaling
596  * (even when <20%), because one output pixel will span more than one
597  * input pixel, and thus some pixels will need edges of both neighbor
598  * pixels to interpolate the output pixel. Since you can use at most
599  * two input pixels per output pixel in bilinear scaling, this is
600  * impossible and thus downscaling by any size will create artifacts.
601  * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
602  * in SwsContext->flags.
603  */
604  /** @{ */
605  void (*hyscale_fast)(struct SwsContext *c,
606  int16_t *dst, int dstWidth,
607  const uint8_t *src, int srcW, int xInc);
608  void (*hcscale_fast)(struct SwsContext *c,
609  int16_t *dst1, int16_t *dst2, int dstWidth,
610  const uint8_t *src1, const uint8_t *src2,
611  int srcW, int xInc);
612  /** @} */
613 
614  /**
615  * Scale one horizontal line of input data using a filter over the input
616  * lines, to produce one (differently sized) line of output data.
617  *
618  * @param dst pointer to destination buffer for horizontally scaled
619  * data. If the number of bits per component of one
620  * destination pixel (SwsContext->dstBpc) is <= 10, data
621  * will be 15 bpc in 16 bits (int16_t) width. Else (i.e.
622  * SwsContext->dstBpc == 16), data will be 19bpc in
623  * 32 bits (int32_t) width.
624  * @param dstW width of destination image
625  * @param src pointer to source data to be scaled. If the number of
626  * bits per component of a source pixel (SwsContext->srcBpc)
627  * is 8, this is 8bpc in 8 bits (uint8_t) width. Else
628  * (i.e. SwsContext->dstBpc > 8), this is native depth
629  * in 16 bits (uint16_t) width. In other words, for 9-bit
630  * YUV input, this is 9bpc, for 10-bit YUV input, this is
631  * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
632  * @param filter filter coefficients to be used per output pixel for
633  * scaling. This contains 14bpp filtering coefficients.
634  * Guaranteed to contain dstW * filterSize entries.
635  * @param filterPos position of the first input pixel to be used for
636  * each output pixel during scaling. Guaranteed to
637  * contain dstW entries.
638  * @param filterSize the number of input coefficients to be used (and
639  * thus the number of input pixels to be used) for
640  * creating a single output pixel. Is aligned to 4
641  * (and input coefficients thus padded with zeroes)
642  * to simplify creating SIMD code.
643  */
644  /** @{ */
645  void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
646  const uint8_t *src, const int16_t *filter,
647  const int32_t *filterPos, int filterSize);
648  void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
649  const uint8_t *src, const int16_t *filter,
650  const int32_t *filterPos, int filterSize);
651  /** @} */
652 
653  /// Color range conversion function for luma plane if needed.
654  void (*lumConvertRange)(int16_t *dst, int width);
655  /// Color range conversion function for chroma planes if needed.
656  void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
657 
658  int needs_hcscale; ///< Set if there are chroma planes to be converted.
659 
661 
663 
664  // scratch buffer for converting packed rgb0 sources
665  // filled with a copy of the input frame + fully opaque alpha,
666  // then passed as input to further conversion
667  uint8_t *rgb0_scratch;
669 
670  // scratch buffer for converting XYZ sources
671  // filled with the input converted to rgb48
672  // then passed as input to further conversion
673  uint8_t *xyz_scratch;
674  unsigned int xyz_scratch_allocated;
675 
676  unsigned int dst_slice_align;
679 } SwsContext;
680 //FIXME check init (where 0)
681 
683 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
684  int fullRange, int brightness,
685  int contrast, int saturation);
686 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
687  int brightness, int contrast, int saturation);
688 
690 
692 
695 
697 {
699  av_assert0(desc);
700  return desc->comp[0].depth == 16;
701 }
702 
704 {
706  av_assert0(desc);
707  return desc->comp[0].depth == 32;
708 }
709 
711 {
713  av_assert0(desc);
714  return desc->comp[0].depth >= 9 && desc->comp[0].depth <= 14;
715 }
716 
718 {
720  av_assert0(desc);
721  return desc->flags & AV_PIX_FMT_FLAG_BE;
722 }
723 
725 {
727  av_assert0(desc);
728  return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
729 }
730 
732 {
734  av_assert0(desc);
735  return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
736 }
737 
738 /*
739  * Identity semi-planar YUV formats. Specifically, those are YUV formats
740  * where the second and third components (U & V) are on the same plane.
741  */
743 {
745  av_assert0(desc);
746  return (isPlanarYUV(pix_fmt) && desc->comp[1].plane == desc->comp[2].plane);
747 }
748 
750 {
752  av_assert0(desc);
753  return (desc->flags & AV_PIX_FMT_FLAG_RGB);
754 }
755 
757 {
759  av_assert0(desc);
760  return !(desc->flags & AV_PIX_FMT_FLAG_PAL) &&
761  !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL) &&
762  desc->nb_components <= 2 &&
765 }
766 
768 {
769  return pix_fmt == AV_PIX_FMT_RGB48BE ||
787 }
788 
790 {
791  return pix_fmt == AV_PIX_FMT_BGR48BE ||
809 }
810 
812 {
814  av_assert0(desc);
815  return !!(desc->flags & AV_PIX_FMT_FLAG_BAYER);
816 }
817 
819 {
821  av_assert0(desc);
822  return desc->comp[1].depth == 8;
823 }
824 
826 {
828  av_assert0(desc);
829  return (desc->flags & AV_PIX_FMT_FLAG_RGB) ||
831 }
832 
834 {
836  av_assert0(desc);
837  return desc->flags & AV_PIX_FMT_FLAG_FLOAT;
838 }
839 
841 {
843  av_assert0(desc);
844  if (pix_fmt == AV_PIX_FMT_PAL8)
845  return 1;
846  return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
847 }
848 
850 {
852  av_assert0(desc);
853  return (desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
856 }
857 
859 {
861  av_assert0(desc);
862  return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
863 }
864 
866 {
868  av_assert0(desc);
870 }
871 
873 {
875  av_assert0(desc);
876  return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
878 }
879 
881 {
882  switch (pix_fmt) {
883  case AV_PIX_FMT_PAL8:
885  case AV_PIX_FMT_BGR8:
886  case AV_PIX_FMT_GRAY8:
888  case AV_PIX_FMT_RGB8:
889  return 1;
890  default:
891  return 0;
892  }
893 }
894 
895 extern const uint64_t ff_dither4[2];
896 extern const uint64_t ff_dither8[2];
897 
898 extern const uint8_t ff_dither_2x2_4[3][8];
899 extern const uint8_t ff_dither_2x2_8[3][8];
900 extern const uint8_t ff_dither_4x4_16[5][8];
901 extern const uint8_t ff_dither_8x8_32[9][8];
902 extern const uint8_t ff_dither_8x8_73[9][8];
903 extern const uint8_t ff_dither_8x8_128[9][8];
904 extern const uint8_t ff_dither_8x8_220[9][8];
905 
906 extern const int32_t ff_yuv2rgb_coeffs[11][4];
907 
908 extern const AVClass ff_sws_context_class;
909 
910 /**
911  * Set c->convert_unscaled to an unscaled converter if one exists for the
912  * specific source and destination formats, bit depths, flags, etc.
913  */
918 
920 
935 
936 void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
937  const uint8_t *src, int srcW, int xInc);
938 void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
939  int dstWidth, const uint8_t *src1,
940  const uint8_t *src2, int srcW, int xInc);
941 int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode,
942  int16_t *filter, int32_t *filterPos,
943  int numSplits);
944 void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
945  int dstWidth, const uint8_t *src,
946  int srcW, int xInc);
947 void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
948  int dstWidth, const uint8_t *src1,
949  const uint8_t *src2, int srcW, int xInc);
950 
951 /**
952  * Allocate and return an SwsContext.
953  * This is like sws_getContext() but does not perform the init step, allowing
954  * the user to set additional AVOptions.
955  *
956  * @see sws_getContext()
957  */
959  int dstW, int dstH, enum AVPixelFormat dstFormat,
960  int flags, const double *param);
961 
962 int ff_sws_alphablendaway(SwsContext *c, const uint8_t *src[],
963  int srcStride[], int srcSliceY, int srcSliceH,
964  uint8_t *dst[], int dstStride[]);
965 
966 static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
967  int alpha, int bits, const int big_endian)
968 {
969  int i, j;
970  uint8_t *ptr = plane + stride * y;
971  int v = alpha ? 0xFFFF>>(16-bits) : (1<<(bits-1));
972  for (i = 0; i < height; i++) {
973 #define FILL(wfunc) \
974  for (j = 0; j < width; j++) {\
975  wfunc(ptr+2*j, v);\
976  }
977  if (big_endian) {
978  FILL(AV_WB16);
979  } else {
980  FILL(AV_WL16);
981  }
982  ptr += stride;
983  }
984 #undef FILL
985 }
986 
987 static inline void fillPlane32(uint8_t *plane, int stride, int width, int height, int y,
988  int alpha, int bits, const int big_endian, int is_float)
989 {
990  int i, j;
991  uint8_t *ptr = plane + stride * y;
992  uint32_t v;
993  uint32_t onef32 = 0x3f800000;
994  if (is_float)
995  v = alpha ? onef32 : 0;
996  else
997  v = alpha ? 0xFFFFFFFF>>(32-bits) : (1<<(bits-1));
998 
999  for (i = 0; i < height; i++) {
1000 #define FILL(wfunc) \
1001  for (j = 0; j < width; j++) {\
1002  wfunc(ptr+4*j, v);\
1003  }
1004  if (big_endian) {
1005  FILL(AV_WB32);
1006  } else {
1007  FILL(AV_WL32);
1008  }
1009  ptr += stride;
1010  }
1011 #undef FILL
1012 }
1013 
1014 
1015 #define MAX_SLICE_PLANES 4
1016 
1017 /// Slice plane
1018 typedef struct SwsPlane
1019 {
1020  int available_lines; ///< max number of lines that can be hold by this plane
1021  int sliceY; ///< index of first line
1022  int sliceH; ///< number of lines
1023  uint8_t **line; ///< line buffer
1024  uint8_t **tmp; ///< Tmp line buffer used by mmx code
1025 } SwsPlane;
1026 
1027 /**
1028  * Struct which defines a slice of an image to be scaled or an output for
1029  * a scaled slice.
1030  * A slice can also be used as intermediate ring buffer for scaling steps.
1031  */
1032 typedef struct SwsSlice
1033 {
1034  int width; ///< Slice line width
1035  int h_chr_sub_sample; ///< horizontal chroma subsampling factor
1036  int v_chr_sub_sample; ///< vertical chroma subsampling factor
1037  int is_ring; ///< flag to identify if this slice is a ring buffer
1038  int should_free_lines; ///< flag to identify if there are dynamic allocated lines
1039  enum AVPixelFormat fmt; ///< planes pixel format
1040  SwsPlane plane[MAX_SLICE_PLANES]; ///< color planes
1041 } SwsSlice;
1042 
1043 /**
1044  * Struct which holds all necessary data for processing a slice.
1045  * A processing step can be a color conversion or horizontal/vertical scaling.
1046  */
1047 typedef struct SwsFilterDescriptor
1048 {
1049  SwsSlice *src; ///< Source slice
1050  SwsSlice *dst; ///< Output slice
1051 
1052  int alpha; ///< Flag for processing alpha channel
1053  void *instance; ///< Filter instance data
1054 
1055  /// Function for processing input slice sliceH lines starting from line sliceY
1056  int (*process)(SwsContext *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH);
1058 
1059 // warp input lines in the form (src + width*i + j) to slice format (line[i][j])
1060 // relative=true means first line src[x][0] otherwise first line is src[x][lum/crh Y]
1061 int ff_init_slice_from_src(SwsSlice * s, uint8_t *src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH, int relative);
1062 
1063 // Initialize scaler filter descriptor chain
1065 
1066 // Free all filter data
1068 
1069 /*
1070  function for applying ring buffer logic into slice s
1071  It checks if the slice can hold more @lum lines, if yes
1072  do nothing otherwise remove @lum least used lines.
1073  It applies the same procedure for @chr lines.
1074 */
1075 int ff_rotate_slice(SwsSlice *s, int lum, int chr);
1076 
1077 /// initializes gamma conversion descriptor
1079 
1080 /// initializes lum pixel format conversion descriptor
1082 
1083 /// initializes lum horizontal scaling descriptor
1084 int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1085 
1086 /// initializes chr pixel format conversion descriptor
1088 
1089 /// initializes chr horizontal scaling descriptor
1090 int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1091 
1093 
1094 /// initializes vertical scaling descriptors
1096 
1097 /// setup vertical scaler functions
1099  yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2,
1100  yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx);
1101 
1102 void ff_sws_slice_worker(void *priv, int jobnr, int threadnr,
1103  int nb_jobs, int nb_threads);
1104 
1105 //number of extra lines to process
1106 #define MAX_LINES_AHEAD 4
1107 
1108 #endif /* SWSCALE_SWSCALE_INTERNAL_H */
isBayer
static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:811
ff_sws_init_swscale_ppc
void ff_sws_init_swscale_ppc(SwsContext *c)
Definition: swscale_altivec.c:238
SwsContext::is_internal_gamma
int is_internal_gamma
Definition: swscale_internal.h:363
SwsContext::lastInChrBuf
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
Definition: swscale_internal.h:389
yuv2packed2_fn
void(* yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2], const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc[2], uint8_t *dest, int dstW, int yalpha, int uvalpha, int y)
Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing bilinear scalin...
Definition: swscale_internal.h:222
SwsContext::flags
int flags
Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc....
Definition: swscale_internal.h:432
SwsContext::vLumFilterSize
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
Definition: swscale_internal.h:419
SwsContext::saturation
int saturation
Definition: swscale_internal.h:455
stride
int stride
Definition: mace.c:144
SwsContext::vOffset
uint64_t vOffset
Definition: swscale_internal.h:512
yuv2planar1_fn
void(* yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
Write one line of horizontally scaled data to planar output without any additional vertical scaling (...
Definition: swscale_internal.h:116
SwsContext::chrToYV12
void(* chrToYV12)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, const uint8_t *src3, int width, uint32_t *pal)
Unscaled conversion of chroma planes to YV12 for horizontal scaler.
Definition: swscale_internal.h:571
ff_yuv2rgb_c_init_tables
int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
Definition: yuv2rgb.c:773
SwsFilterDescriptor::process
int(* process)(SwsContext *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH)
Function for processing input slice sliceH lines starting from line sliceY.
Definition: swscale_internal.h:1056
yuv2packed1_fn
void(* yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc, const int16_t *chrUSrc[2], const int16_t *chrVSrc[2], const int16_t *alpSrc, uint8_t *dest, int dstW, int uvalpha, int y)
Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output without any additional v...
Definition: swscale_internal.h:189
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
ff_dither_8x8_128
const uint8_t ff_dither_8x8_128[9][8]
Definition: swscale.c:40
AV_PIX_FMT_BGR48LE
@ AV_PIX_FMT_BGR48LE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:139
SwsContext::chrSrcW
int chrSrcW
Width of source chroma planes.
Definition: swscale_internal.h:325
isPlanarRGB
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:872
SwsPlane::sliceH
int sliceH
number of lines
Definition: swscale_internal.h:1022
ff_sws_slice_worker
void ff_sws_slice_worker(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads)
Definition: swscale.c:1217
isRGB
static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:749
isPacked
static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:849
SwsPlane::line
uint8_t ** line
line buffer
Definition: swscale_internal.h:1023
r
const char * r
Definition: vf_curves.c:116
SWS_ALPHA_BLEND_NONE
@ SWS_ALPHA_BLEND_NONE
Definition: swscale_internal.h:81
SwsContext::formatConvBuffer
uint8_t * formatConvBuffer
Definition: swscale_internal.h:392
AV_PIX_FMT_BGRA64BE
@ AV_PIX_FMT_BGRA64BE
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:197
SwsContext::dstW
int dstW
Width of destination luma/alpha planes.
Definition: swscale_internal.h:515
ff_dither_8x8_220
const uint8_t ff_dither_8x8_220[9][8]
Definition: output.c:84
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
mem_internal.h
ff_sws_init_swscale_vsx
void ff_sws_init_swscale_vsx(SwsContext *c)
Definition: swscale_vsx.c:2077
SwsContext::dstFormatBpp
int dstFormatBpp
Number of bits per pixel of the destination pixel format.
Definition: swscale_internal.h:333
SwsContext::cascaded1_tmp
uint8_t * cascaded1_tmp[4]
Definition: swscale_internal.h:358
SwsContext::rgbgamma
int16_t * rgbgamma
Definition: swscale_internal.h:549
SWS_DITHER_BAYER
@ SWS_DITHER_BAYER
Definition: swscale_internal.h:73
AV_PIX_FMT_BGR32
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:366
AV_PIX_FMT_RGB444LE
@ AV_PIX_FMT_RGB444LE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:129
isPlanarYUV
static av_always_inline int isPlanarYUV(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:731
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
SwsContext::dstY
int dstY
Last destination vertical line output from last slice.
Definition: swscale_internal.h:431
ff_sws_init_swscale_x86
void ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:355
sws_alloc_set_opts
struct SwsContext * sws_alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, const double *param)
Allocate and return an SwsContext.
Definition: utils.c:1982
SwsContext::cascaded_mainindex
int cascaded_mainindex
Definition: swscale_internal.h:359
SwsContext::alphablend
SwsAlphaBlend alphablend
Definition: swscale_internal.h:662
SwsContext::chrDither8
const uint8_t * chrDither8
Definition: swscale_internal.h:530
SwsContext::cascaded1_tmpStride
int cascaded1_tmpStride[4]
Definition: swscale_internal.h:357
SwsContext::yOffset
uint64_t yOffset
Definition: swscale_internal.h:510
SwsContext::vrCoeff
uint64_t vrCoeff
Definition: swscale_internal.h:506
RangeList::ranges_allocated
int ranges_allocated
Definition: swscale_internal.h:95
SwsContext::hChrFilterPos
int32_t * hChrFilterPos
Array of horizontal filter starting positions for each dst[i] for chroma planes.
Definition: swscale_internal.h:414
AV_PIX_FMT_FLAG_FLOAT
#define AV_PIX_FMT_FLAG_FLOAT
The pixel format contains IEEE-754 floating point values.
Definition: pixdesc.h:158
SwsSlice::plane
SwsPlane plane[MAX_SLICE_PLANES]
color planes
Definition: swscale_internal.h:1040
SwsContext::xyz_scratch
uint8_t * xyz_scratch
Definition: swscale_internal.h:673
SWS_DITHER_A_DITHER
@ SWS_DITHER_A_DITHER
Definition: swscale_internal.h:75
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AV_PIX_FMT_RGBA64BE
@ AV_PIX_FMT_RGBA64BE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:195
SwsContext::ubCoeff
uint64_t ubCoeff
Definition: swscale_internal.h:507
SwsContext::dstColorspaceTable
int dstColorspaceTable[4]
Definition: swscale_internal.h:457
isGray
static av_always_inline int isGray(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:756
ff_rotate_slice
int ff_rotate_slice(SwsSlice *s, int lum, int chr)
Definition: slice.c:119
SwsContext::vChrFilter
int16_t * vChrFilter
Array of vertical filter coefficients for chroma planes.
Definition: swscale_internal.h:412
SwsContext::lumMmxFilter
int32_t lumMmxFilter[4 *MAX_FILTER_SIZE]
Definition: swscale_internal.h:513
SWS_ALPHA_BLEND_NB
@ SWS_ALPHA_BLEND_NB
Definition: swscale_internal.h:84
ff_sws_alphablendaway
int ff_sws_alphablendaway(SwsContext *c, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: alphablend.c:23
SwsContext::chrDstVSubSample
int chrDstVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination i...
Definition: swscale_internal.h:339
ff_sws_init_input_funcs
void ff_sws_init_input_funcs(SwsContext *c)
SwsContext::vLumFilter
int16_t * vLumFilter
Array of vertical filter coefficients for luma/alpha planes.
Definition: swscale_internal.h:411
ff_init_slice_from_src
int ff_init_slice_from_src(SwsSlice *s, uint8_t *src[4], int stride[4], int srcW, int lumY, int lumH, int chrY, int chrH, int relative)
Definition: slice.c:147
SwsFilterDescriptor
Struct which holds all necessary data for processing a slice.
Definition: swscale_internal.h:1047
yuv2planeX
static void FUNC() yuv2planeX(const int16_t *filter, int filterSize, const int16_t **src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
Definition: swscale_ppc_template.c:84
table
static const uint16_t table[]
Definition: prosumer.c:206
ff_sws_init_scale
void ff_sws_init_scale(SwsContext *c)
Definition: swscale.c:593
SwsContext::av_class
const AVClass * av_class
info on struct for av_log
Definition: swscale_internal.h:304
AV_PIX_FMT_MONOWHITE
@ AV_PIX_FMT_MONOWHITE
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb.
Definition: pixfmt.h:75
rgb2yuv
static const char rgb2yuv[]
Definition: vf_scale_vulkan.c:65
atomic_int
intptr_t atomic_int
Definition: stdatomic.h:55
AV_PIX_FMT_RGB32_1
#define AV_PIX_FMT_RGB32_1
Definition: pixfmt.h:365
SwsContext::yuv2planeX
yuv2planarX_fn yuv2planeX
Definition: swscale_internal.h:557
SwsContext::redDither
uint64_t redDither
Definition: swscale_internal.h:501
SwsContext::yuv2plane1
yuv2planar1_fn yuv2plane1
Definition: swscale_internal.h:556
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
SwsContext::nb_threads
int nb_threads
Number of threads used for scaling.
Definition: swscale_internal.h:342
SwsContext::srcRange
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
Definition: swscale_internal.h:458
CY
@ CY
Definition: vf_vpp_qsv.c:167
filter
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
Definition: filter_design.txt:228
SwsContext::lumDither8
const uint8_t * lumDither8
Definition: swscale_internal.h:530
ff_get_unscaled_swscale_aarch64
void ff_get_unscaled_swscale_aarch64(SwsContext *c)
Definition: swscale_unscaled.c:124
SwsContext::needAlpha
int needAlpha
Definition: swscale_internal.h:393
SwsContext::xyzgamma
int16_t * xyzgamma
Definition: swscale_internal.h:548
SwsContext::pal_rgb
uint32_t pal_rgb[256]
Definition: swscale_internal.h:374
AVSliceThread
struct AVSliceThread AVSliceThread
Definition: slicethread.h:22
SwsContext::yuv2anyX
yuv2anyX_fn yuv2anyX
Definition: swscale_internal.h:562
AV_PIX_FMT_RGB555BE
@ AV_PIX_FMT_RGB555BE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:107
SwsContext::cascaded_tmp
uint8_t * cascaded_tmp[4]
Definition: swscale_internal.h:356
SwsSlice::fmt
enum AVPixelFormat fmt
planes pixel format
Definition: swscale_internal.h:1039
SwsFilterDescriptor::src
SwsSlice * src
Source slice.
Definition: swscale_internal.h:1049
SwsContext::dst_slice_align
unsigned int dst_slice_align
Definition: swscale_internal.h:676
Range::start
unsigned int start
Definition: swscale_internal.h:88
SwsContext::src0Alpha
int src0Alpha
Definition: swscale_internal.h:460
SwsContext::yuv2nv12cX
yuv2interleavedX_fn yuv2nv12cX
Definition: swscale_internal.h:558
SwsDither
SwsDither
Definition: swscale_internal.h:70
is16BPS
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:696
SwsFilterDescriptor::instance
void * instance
Filter instance data.
Definition: swscale_internal.h:1053
SwsFunc
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
Definition: swscale_internal.h:100
SwsContext::yuvTable
void * yuvTable
Definition: swscale_internal.h:433
yuv2anyX_fn
void(* yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t **dest, int dstW, int y)
Write one line of horizontally scaled Y/U/V/A to YUV/RGB output by doing multi-point vertical scaling...
Definition: swscale_internal.h:288
SwsContext::use_mmx_vfilter
int use_mmx_vfilter
Definition: swscale_internal.h:543
SwsContext::readLumPlanar
void(* readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv)
Functions to read planar input, such as planar RGB, and convert internally to Y/UV/A.
Definition: swscale_internal.h:580
SwsContext::hcscale_fast
void(* hcscale_fast)(struct SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, const uint8_t *src1, const uint8_t *src2, int srcW, int xInc)
Definition: swscale_internal.h:608
SwsContext::rgbgammainv
int16_t * rgbgammainv
Definition: swscale_internal.h:551
SwsContext::src_v_chr_pos
int src_v_chr_pos
Definition: swscale_internal.h:466
SwsContext::xyz2rgb_matrix
int16_t xyz2rgb_matrix[3][4]
Definition: swscale_internal.h:552
AV_PIX_FMT_FLAG_HWACCEL
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:128
Range::len
unsigned int len
Definition: swscale_internal.h:89
ff_hyscale_fast_c
void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
Definition: hscale_fast_bilinear.c:23
ff_dither_2x2_8
const uint8_t ff_dither_2x2_8[3][8]
Definition: output.c:45
ff_hcscale_fast_c
void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, const uint8_t *src1, const uint8_t *src2, int srcW, int xInc)
Definition: hscale_fast_bilinear.c:38
isNBPS
static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:710
SwsContext::rgb0_scratch_allocated
unsigned int rgb0_scratch_allocated
Definition: swscale_internal.h:668
SwsContext::hLumFilterSize
int hLumFilterSize
Horizontal filter size for luma/alpha pixels.
Definition: swscale_internal.h:417
SwsContext::srcBpc
int srcBpc
Definition: swscale_internal.h:335
SwsSlice::h_chr_sub_sample
int h_chr_sub_sample
horizontal chroma subsampling factor
Definition: swscale_internal.h:1035
SwsContext::gamma_value
double gamma_value
Definition: swscale_internal.h:361
SwsContext::dstXYZ
int dstXYZ
Definition: swscale_internal.h:463
SwsContext::lumYInc
int lumYInc
Definition: swscale_internal.h:330
ff_dither4
const uint64_t ff_dither4[2]
Definition: swscale.c:33
ff_dither_8x8_73
const uint8_t ff_dither_8x8_73[9][8]
Definition: output.c:71
ff_sws_init_range_convert
av_cold void ff_sws_init_range_convert(SwsContext *c)
Definition: swscale.c:536
SwsContext::dither_error
int * dither_error[4]
Definition: swscale_internal.h:452
MAX_FILTER_SIZE
#define MAX_FILTER_SIZE
Definition: swscale_internal.h:46
AV_PIX_FMT_BGR8
@ AV_PIX_FMT_BGR8
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:83
avassert.h
ff_hcscale_fast_mmxext
void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth, const uint8_t *src1, const uint8_t *src2, int srcW, int xInc)
SwsContext::table_gV
int table_gV[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:436
SwsContext::srcFormat
enum AVPixelFormat srcFormat
Source pixel format.
Definition: swscale_internal.h:332
av_cold
#define av_cold
Definition: attributes.h:90
SwsContext::uv_off
ptrdiff_t uv_off
offset (in pixels) between u and v planes
Definition: swscale_internal.h:525
SwsContext::chrSrcH
int chrSrcH
Height of source chroma planes.
Definition: swscale_internal.h:326
SwsContext::table_bU
uint8_t * table_bU[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:439
YUVRGB_TABLE_HEADROOM
#define YUVRGB_TABLE_HEADROOM
Definition: swscale_internal.h:43
SwsContext::dst_slice_height
int dst_slice_height
Definition: swscale_internal.h:315
ff_get_unscaled_swscale_arm
void ff_get_unscaled_swscale_arm(SwsContext *c)
Definition: swscale_unscaled.c:183
SwsContext::lumMmxextFilterCodeSize
int lumMmxextFilterCodeSize
Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
Definition: swscale_internal.h:423
SwsContext::dither
SwsDither dither
Definition: swscale_internal.h:660
SWS_DITHER_ED
@ SWS_DITHER_ED
Definition: swscale_internal.h:74
width
#define width
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
SwsContext::ugCoeff
uint64_t ugCoeff
Definition: swscale_internal.h:509
SwsContext::brightness
int brightness
Definition: swscale_internal.h:455
ff_dither_8x8_32
const uint8_t ff_dither_8x8_32[9][8]
Definition: output.c:59
CSHIFT
#define CSHIFT
Definition: audiogen.c:72
SwsSlice::width
int width
Slice line width.
Definition: swscale_internal.h:1034
SwsContext::lumConvertRange
void(* lumConvertRange)(int16_t *dst, int width)
Color range conversion function for luma plane if needed.
Definition: swscale_internal.h:654
bits
uint8_t bits
Definition: vp3data.h:141
ff_yuv2rgb_init_x86
SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
Definition: yuv2rgb.c:69
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
SwsPlane::tmp
uint8_t ** tmp
Tmp line buffer used by mmx code.
Definition: swscale_internal.h:1024
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:147
ff_sws_context_class
const AVClass ff_sws_context_class
Definition: options.c:90
AV_PIX_FMT_RGB4
@ AV_PIX_FMT_RGB4
packed RGB 1:2:1 bitstream, 4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in ...
Definition: pixfmt.h:87
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:41
SwsContext::hcScale
void(* hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Definition: swscale_internal.h:648
ff_init_vscale_pfn
void ff_init_vscale_pfn(SwsContext *c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX, yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2, yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx)
setup vertical scaler functions
Definition: vscale.c:257
SwsContext::contrast
int contrast
Definition: swscale_internal.h:455
SwsContext::lumXInc
int lumXInc
Definition: swscale_internal.h:329
AV_PIX_FMT_BGR32_1
#define AV_PIX_FMT_BGR32_1
Definition: pixfmt.h:367
SwsContext::vLumFilterPos
int32_t * vLumFilterPos
Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
Definition: swscale_internal.h:415
SwsContext::vRounder
uint64_t vRounder
Definition: swscale_internal.h:517
SwsContext::dstFormat
enum AVPixelFormat dstFormat
Destination pixel format.
Definition: swscale_internal.h:331
ff_init_hscaler_mmxext
int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
SwsContext::yuv2rgb_y_offset
int yuv2rgb_y_offset
Definition: swscale_internal.h:468
SwsContext::dst_slice_start
int dst_slice_start
Definition: swscale_internal.h:314
isSemiPlanarYUV
static av_always_inline int isSemiPlanarYUV(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:742
context
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without and describe what they for example set the foo of the bar offset is the offset of the field in your context
Definition: writing_filters.txt:91
SwsContext::slice_err
int * slice_err
Definition: swscale_internal.h:310
SwsContext::yuv2packed2
yuv2packed2_fn yuv2packed2
Definition: swscale_internal.h:560
SwsContext::readChrPlanar
void(* readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width, int32_t *rgb2yuv)
Definition: swscale_internal.h:581
SWS_DITHER_NONE
@ SWS_DITHER_NONE
Definition: swscale_internal.h:71
AV_PIX_FMT_RGB565LE
@ AV_PIX_FMT_RGB565LE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: pixfmt.h:106
ff_get_unscaled_swscale
void ff_get_unscaled_swscale(SwsContext *c)
Set c->convert_unscaled to an unscaled converter if one exists for the specific source and destinatio...
Definition: swscale_unscaled.c:1974
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
ff_sws_init_swscale_aarch64
void ff_sws_init_swscale_aarch64(SwsContext *c)
Definition: swscale.c:33
SwsContext::xyzgammainv
int16_t * xyzgammainv
Definition: swscale_internal.h:550
SwsPlane::available_lines
int available_lines
max number of lines that can be hold by this plane
Definition: swscale_internal.h:1020
SWS_ALPHA_BLEND_UNIFORM
@ SWS_ALPHA_BLEND_UNIFORM
Definition: swscale_internal.h:82
SwsContext::yuv2rgb_v2g_coeff
int yuv2rgb_v2g_coeff
Definition: swscale_internal.h:471
AV_WB16
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
SwsContext::gamma_flag
int gamma_flag
Definition: swscale_internal.h:362
SwsContext::dstBpc
int dstBpc
Definition: swscale_internal.h:335
SwsContext::convert_unscaled
SwsFunc convert_unscaled
Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be fre...
Definition: swscale_internal.h:321
SwsContext::slicethread
AVSliceThread * slicethread
Definition: swscale_internal.h:308
AV_PIX_FMT_RGB48LE
@ AV_PIX_FMT_RGB48LE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
Definition: pixfmt.h:103
SwsContext::lumMmxextFilterCode
uint8_t * lumMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
Definition: swscale_internal.h:425
AV_PIX_FMT_MONOBLACK
@ AV_PIX_FMT_MONOBLACK
Y , 1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb.
Definition: pixfmt.h:76
RangeList
Definition: swscale_internal.h:92
NB_SWS_DITHER
@ NB_SWS_DITHER
Definition: swscale_internal.h:77
AV_PIX_FMT_BGR565LE
@ AV_PIX_FMT_BGR565LE
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), little-endian
Definition: pixfmt.h:111
AV_PIX_FMT_RGBA64LE
@ AV_PIX_FMT_RGBA64LE
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:196
src
#define src
Definition: vp8dsp.c:255
SwsPlane
Slice plane.
Definition: swscale_internal.h:1018
SwsContext::greenDither
uint64_t greenDither
Definition: swscale_internal.h:502
SwsContext::blueDither
uint64_t blueDither
Definition: swscale_internal.h:503
RangeList::nb_ranges
unsigned int nb_ranges
Definition: swscale_internal.h:94
ff_init_desc_hscale
int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int *filter_pos, int filter_size, int xInc)
initializes lum horizontal scaling descriptor
Definition: hscale.c:144
AV_PIX_FMT_RGB8
@ AV_PIX_FMT_RGB8
packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
Definition: pixfmt.h:86
SwsContext::rgb2xyz_matrix
int16_t rgb2xyz_matrix[3][4]
Definition: swscale_internal.h:553
AV_PIX_FMT_BGR4
@ AV_PIX_FMT_BGR4
packed RGB 1:2:1 bitstream, 4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in ...
Definition: pixfmt.h:84
SwsContext::alpMmxFilter
int32_t alpMmxFilter[4 *MAX_FILTER_SIZE]
Definition: swscale_internal.h:521
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_BGR555BE
@ AV_PIX_FMT_BGR555BE
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), big-endian , X=unused/undefined
Definition: pixfmt.h:112
SwsContext::yuv2rgb_v2r_coeff
int yuv2rgb_v2r_coeff
Definition: swscale_internal.h:470
ff_init_desc_no_chr
int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst)
Definition: hscale.c:281
SwsContext::dst_h_chr_pos
int dst_h_chr_pos
Definition: swscale_internal.h:465
Range
Definition: vf_colorbalance.c:38
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
AV_PIX_FMT_BGR4_BYTE
@ AV_PIX_FMT_BGR4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1B 2G 1R(lsb)
Definition: pixfmt.h:85
AV_WB32
#define AV_WB32(p, v)
Definition: intreadwrite.h:419
ff_range_add
int ff_range_add(RangeList *r, unsigned int start, unsigned int len)
Definition: utils.c:2474
SwsContext::vChrFilterPos
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
Definition: swscale_internal.h:416
isBE
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:717
SwsContext::sliceDir
int sliceDir
Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
Definition: swscale_internal.h:341
SwsContext::src_ranges
RangeList src_ranges
Definition: swscale_internal.h:348
AV_PIX_FMT_RGB24
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
SwsContext::chrSrcVSubSample
int chrSrcVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
Definition: swscale_internal.h:337
SwsContext::yuv2rgb_u2g_coeff
int yuv2rgb_u2g_coeff
Definition: swscale_internal.h:472
SwsContext::hLumFilterPos
int32_t * hLumFilterPos
Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
Definition: swscale_internal.h:413
SwsFilterDescriptor::dst
SwsSlice * dst
Output slice.
Definition: swscale_internal.h:1050
AV_PIX_FMT_FLAG_RGB
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:136
fillPlane16
static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y, int alpha, int bits, const int big_endian)
Definition: swscale_internal.h:966
usePal
static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:880
SwsContext::v_temp
uint64_t v_temp
Definition: swscale_internal.h:519
isAnyRGB
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:825
AV_PIX_FMT_RGB444BE
@ AV_PIX_FMT_RGB444BE
packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:130
SwsContext::srcFormatBpp
int srcFormatBpp
Number of bits per pixel of the source pixel format.
Definition: swscale_internal.h:334
SwsContext::srcColorspaceTable
int srcColorspaceTable[4]
Definition: swscale_internal.h:456
SwsContext::desc
struct SwsFilterDescriptor * desc
Definition: swscale_internal.h:371
SwsContext::slice_ctx
struct SwsContext ** slice_ctx
Definition: swscale_internal.h:309
SwsContext::srcH
int srcH
Height of source luma/alpha planes.
Definition: swscale_internal.h:323
srcSliceH
return srcSliceH
Definition: yuv2rgb_template.c:87
ff_init_desc_chscale
int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int *filter_pos, int filter_size, int xInc)
initializes chr horizontal scaling descriptor
Definition: hscale.c:250
isYUV
static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:724
ff_init_desc_cfmt_convert
int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint32_t *pal)
initializes chr pixel format conversion descriptor
Definition: hscale.c:235
SwsAlphaBlend
SwsAlphaBlend
Definition: swscale_internal.h:80
SwsContext::hyScale
void(* hyScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
Scale one horizontal line of input data using a filter over the input lines, to produce one (differen...
Definition: swscale_internal.h:645
frame.h
AV_PIX_FMT_BGR444BE
@ AV_PIX_FMT_BGR444BE
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), big-endian, X=unused/undefined
Definition: pixfmt.h:132
ff_yuv2rgb_get_func_ptr
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
Definition: yuv2rgb.c:678
SwsContext::uOffset
uint64_t uOffset
Definition: swscale_internal.h:511
is32BPS
static av_always_inline int is32BPS(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:703
AV_WL16
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
SwsContext::dither32
uint32_t dither32[8]
Definition: swscale_internal.h:528
height
#define height
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:364
isBGRinInt
static av_always_inline int isBGRinInt(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:789
ff_yuv2rgb_init_ppc
SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
Definition: yuv2rgb_altivec.c:535
SwsContext::chrMmxextFilterCodeSize
int chrMmxextFilterCodeSize
Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
Definition: swscale_internal.h:424
SwsContext::hLumFilter
int16_t * hLumFilter
Array of horizontal filter coefficients for luma/alpha planes.
Definition: swscale_internal.h:409
AV_PIX_FMT_BGR565BE
@ AV_PIX_FMT_BGR565BE
packed BGR 5:6:5, 16bpp, (msb) 5B 6G 5R(lsb), big-endian
Definition: pixfmt.h:110
SwsContext::yuv2packedX
yuv2packedX_fn yuv2packedX
Definition: swscale_internal.h:561
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
SwsContext::vChrFilterSize
int vChrFilterSize
Vertical filter size for chroma pixels.
Definition: swscale_internal.h:420
SwsContext::y_temp
uint64_t y_temp
Definition: swscale_internal.h:520
fillPlane32
static void fillPlane32(uint8_t *plane, int stride, int width, int height, int y, int alpha, int bits, const int big_endian, int is_float)
Definition: swscale_internal.h:987
slicethread.h
AV_PIX_FMT_FLAG_BAYER
#define AV_PIX_FMT_FLAG_BAYER
The pixel format is following a Bayer pattern.
Definition: pixdesc.h:152
ff_init_gamma_convert
int ff_init_gamma_convert(SwsFilterDescriptor *desc, SwsSlice *src, uint16_t *table)
initializes gamma conversion descriptor
Definition: gamma.c:58
AV_PIX_FMT_BGRA64LE
@ AV_PIX_FMT_BGRA64LE
packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is st...
Definition: pixfmt.h:198
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
SwsContext::frame_src
AVFrame * frame_src
Definition: swscale_internal.h:345
src1
#define src1
Definition: h264pred.c:140
SwsContext::srcW
int srcW
Width of source luma/alpha planes.
Definition: swscale_internal.h:322
AV_PIX_FMT_RGB555LE
@ AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:108
SwsContext::yuv2rgb_u2b_coeff
int yuv2rgb_u2b_coeff
Definition: swscale_internal.h:473
AV_PIX_FMT_RGB48BE
@ AV_PIX_FMT_RGB48BE
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:102
ff_yuv2rgb_coeffs
const int32_t ff_yuv2rgb_coeffs[11][4]
Definition: yuv2rgb.c:48
log.h
SwsContext::nb_slice_ctx
int nb_slice_ctx
Definition: swscale_internal.h:311
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
SwsContext::dither16
uint16_t dither16[8]
Definition: swscale_internal.h:527
SwsContext::dstRange
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
Definition: swscale_internal.h:459
SwsContext::numSlice
int numSlice
Definition: swscale_internal.h:369
common.h
SwsSlice::should_free_lines
int should_free_lines
flag to identify if there are dynamic allocated lines
Definition: swscale_internal.h:1038
av_always_inline
#define av_always_inline
Definition: attributes.h:49
yuv2interleavedX_fn
void(* yuv2interleavedX_fn)(enum AVPixelFormat dstFormat, const uint8_t *chrDither, const int16_t *chrFilter, int chrFilterSize, const int16_t **chrUSrc, const int16_t **chrVSrc, uint8_t *dest, int dstW)
Write one line of horizontally scaled chroma to interleaved output with multi-point vertical scaling ...
Definition: swscale_internal.h:152
AV_PIX_FMT_FLAG_BE
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:116
SwsSlice::is_ring
int is_ring
flag to identify if this slice is a ring buffer
Definition: swscale_internal.h:1037
SwsContext::readAlpPlanar
void(* readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv)
Definition: swscale_internal.h:583
SwsContext::alpToYV12
void(* alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3, int width, uint32_t *pal)
Unscaled conversion of alpha plane to YV12 for horizontal scaler.
Definition: swscale_internal.h:568
len
int len
Definition: vorbis_enc_data.h:426
SwsContext::hChrFilter
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
Definition: swscale_internal.h:410
SwsSlice::v_chr_sub_sample
int v_chr_sub_sample
vertical chroma subsampling factor
Definition: swscale_internal.h:1036
AV_PIX_FMT_RGB4_BYTE
@ AV_PIX_FMT_RGB4_BYTE
packed RGB 1:2:1, 8bpp, (msb)1R 2G 1B(lsb)
Definition: pixfmt.h:88
SwsSlice
Struct which defines a slice of an image to be scaled or an output for a scaled slice.
Definition: swscale_internal.h:1032
ff_init_filters
int ff_init_filters(SwsContext *c)
Definition: slice.c:248
isFloat
static av_always_inline int isFloat(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:833
RangeList::ranges
Range * ranges
Definition: swscale_internal.h:93
SwsContext::chrYInc
int chrYInc
Definition: swscale_internal.h:330
SwsContext::slice
struct SwsSlice * slice
Definition: swscale_internal.h:370
version.h
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
SwsFilterDescriptor::alpha
int alpha
Flag for processing alpha channel.
Definition: swscale_internal.h:1052
SwsContext::srcXYZ
int srcXYZ
Definition: swscale_internal.h:462
pixfmt.h
ff_dither8
const uint64_t ff_dither8[2]
Definition: swscale.c:37
SwsContext::yuv2rgb_y_coeff
int yuv2rgb_y_coeff
Definition: swscale_internal.h:469
SWS_ALPHA_BLEND_CHECKERBOARD
@ SWS_ALPHA_BLEND_CHECKERBOARD
Definition: swscale_internal.h:83
SwsContext::numDesc
int numDesc
Definition: swscale_internal.h:367
SwsContext::table_rV
uint8_t * table_rV[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:437
SwsContext::chrDstH
int chrDstH
Height of destination chroma planes.
Definition: swscale_internal.h:328
SwsContext::xyz_scratch_allocated
unsigned int xyz_scratch_allocated
Definition: swscale_internal.h:674
ff_free_filters
int ff_free_filters(SwsContext *c)
Definition: slice.c:382
ff_get_unscaled_swscale_ppc
void ff_get_unscaled_swscale_ppc(SwsContext *c)
Definition: yuv2yuv_altivec.c:187
SwsContext::input_rgb2yuv_table
int32_t input_rgb2yuv_table[16+40 *4]
Definition: swscale_internal.h:440
yuv2planarX_fn
void(* yuv2planarX_fn)(const int16_t *filter, int filterSize, const int16_t **src, uint8_t *dest, int dstW, const uint8_t *dither, int offset)
Write one line of horizontally scaled data to planar output with multi-point vertical scaling between...
Definition: swscale_internal.h:132
ff_sws_init_output_funcs
void ff_sws_init_output_funcs(SwsContext *c, yuv2planar1_fn *yuv2plane1, yuv2planarX_fn *yuv2planeX, yuv2interleavedX_fn *yuv2nv12cX, yuv2packed1_fn *yuv2packed1, yuv2packed2_fn *yuv2packed2, yuv2packedX_fn *yuv2packedX, yuv2anyX_fn *yuv2anyX)
Definition: output.c:2554
SwsContext::inv_gamma
uint16_t * inv_gamma
Definition: swscale_internal.h:365
MAX_SLICE_PLANES
#define MAX_SLICE_PLANES
Definition: swscale_internal.h:1015
isPackedRGB
static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:865
SwsContext::cascaded_tmpStride
int cascaded_tmpStride[4]
Definition: swscale_internal.h:355
SwsContext::table_gU
uint8_t * table_gU[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:438
yuv2packedX_fn
void(* yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize, const int16_t *chrFilter, const int16_t **chrUSrc, const int16_t **chrVSrc, int chrFilterSize, const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB output by doing multi-point ver...
Definition: swscale_internal.h:254
SwsContext::frame_dst
AVFrame * frame_dst
Definition: swscale_internal.h:346
SwsContext::chrXInc
int chrXInc
Definition: swscale_internal.h:329
AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:132
SwsContext::dst0Alpha
int dst0Alpha
Definition: swscale_internal.h:461
SwsContext::warned_unuseable_bilinear
int warned_unuseable_bilinear
Definition: swscale_internal.h:429
AV_PIX_FMT_RGB565BE
@ AV_PIX_FMT_RGB565BE
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
Definition: pixfmt.h:105
SwsContext::chrMmxFilter
int32_t chrMmxFilter[4 *MAX_FILTER_SIZE]
Definition: swscale_internal.h:514
ff_hyscale_fast_mmxext
void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
SwsContext::yCoeff
uint64_t yCoeff
Definition: swscale_internal.h:505
SwsContext::lumToYV12
void(* lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3, int width, uint32_t *pal)
Unscaled conversion of luma plane to YV12 for horizontal scaler.
Definition: swscale_internal.h:565
desc
const char * desc
Definition: libsvtav1.c:79
avutil.h
isBayer16BPS
static av_always_inline int isBayer16BPS(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:818
ff_init_vscale
int ff_init_vscale(SwsContext *c, SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst)
initializes vertical scaling descriptors
Definition: vscale.c:213
SwsPlane::sliceY
int sliceY
index of first line
Definition: swscale_internal.h:1021
SwsContext::hChrFilterSize
int hChrFilterSize
Horizontal filter size for chroma pixels.
Definition: swscale_internal.h:418
SwsContext::vChrDrop
int vChrDrop
Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user...
Definition: swscale_internal.h:340
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
AV_PIX_FMT_BGR555LE
@ AV_PIX_FMT_BGR555LE
packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:113
util_altivec.h
SwsContext::u_temp
uint64_t u_temp
Definition: swscale_internal.h:518
lum
static double lum(void *priv, double x, double y, int plane)
Definition: vf_fftfilt.c:97
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
SwsContext::pal_yuv
uint32_t pal_yuv[256]
Definition: swscale_internal.h:373
SwsContext::chrDstHSubSample
int chrDstHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination...
Definition: swscale_internal.h:338
SWS_DITHER_AUTO
@ SWS_DITHER_AUTO
Definition: swscale_internal.h:72
isRGBinInt
static av_always_inline int isRGBinInt(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:767
SwsContext::rgb0_scratch
uint8_t * rgb0_scratch
Definition: swscale_internal.h:667
SwsContext::stride_unaligned_warned
atomic_int stride_unaligned_warned
Definition: swscale_internal.h:677
SwsContext::chrDstW
int chrDstW
Width of destination chroma planes.
Definition: swscale_internal.h:327
SwsContext::vgCoeff
uint64_t vgCoeff
Definition: swscale_internal.h:508
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
SwsContext::src_h_chr_pos
int src_h_chr_pos
Definition: swscale_internal.h:464
SwsContext::yuv2packed1
yuv2packed1_fn yuv2packed1
Definition: swscale_internal.h:559
ff_init_desc_fmt_convert
int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint32_t *pal)
initializes lum pixel format conversion descriptor
Definition: hscale.c:127
SwsContext::gamma
uint16_t * gamma
Definition: swscale_internal.h:364
ff_updateMMXDitherTables
void ff_updateMMXDitherTables(SwsContext *c, int dstY)
ff_sws_init_swscale_arm
void ff_sws_init_swscale_arm(SwsContext *c)
Definition: swscale.c:33
isPlanar
static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:858
SwsContext::cascaded_context
struct SwsContext * cascaded_context[3]
Definition: swscale_internal.h:354
SwsContext::descIndex
int descIndex[2]
Definition: swscale_internal.h:368
SwsContext::uint2float_lut
float uint2float_lut[256]
Definition: swscale_internal.h:376
FILL
#define FILL(wfunc)
SwsContext::chrConvertRange
void(* chrConvertRange)(int16_t *dst1, int16_t *dst2, int width)
Color range conversion function for chroma planes if needed.
Definition: swscale_internal.h:656
SwsContext::dst_v_chr_pos
int dst_v_chr_pos
Definition: swscale_internal.h:467
ff_yuv2rgb_init_tables_ppc
void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
Definition: yuv2rgb_altivec.c:598
SWS_DITHER_X_DITHER
@ SWS_DITHER_X_DITHER
Definition: swscale_internal.h:76
int
int
Definition: ffmpeg_filter.c:156
SwsContext
Definition: swscale_internal.h:300
SwsContext::chrSrcHSubSample
int chrSrcHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source imag...
Definition: swscale_internal.h:336
SwsContext::chrMmxextFilterCode
uint8_t * chrMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
Definition: swscale_internal.h:426
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:120
AV_PIX_FMT_BGR444LE
@ AV_PIX_FMT_BGR444LE
packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:131
SwsContext::dstH
int dstH
Height of destination luma/alpha planes.
Definition: swscale_internal.h:324
SwsContext::esp
uint64_t esp
Definition: swscale_internal.h:516
SwsContext::canMMXEXTBeUsed
int canMMXEXTBeUsed
Definition: swscale_internal.h:428
SwsContext::hyscale_fast
void(* hyscale_fast)(struct SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
Scale one horizontal line of input data using a bilinear filter to produce one line of output data.
Definition: swscale_internal.h:605
ff_dither_4x4_16
const uint8_t ff_dither_4x4_16[5][8]
Definition: output.c:51
ff_dither_2x2_4
const uint8_t ff_dither_2x2_4[3][8]
Definition: output.c:39
SwsContext::data_unaligned_warned
atomic_int data_unaligned_warned
Definition: swscale_internal.h:678
isALPHA
static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:840
SwsContext::lastInLumBuf
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
Definition: swscale_internal.h:388
SwsContext::parent
struct SwsContext * parent
Definition: swscale_internal.h:306
AV_PIX_FMT_BGR48BE
@ AV_PIX_FMT_BGR48BE
packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as big...
Definition: pixfmt.h:138
SwsContext::uv_offx2
ptrdiff_t uv_offx2
offset (in bytes) between u and v planes
Definition: swscale_internal.h:526
SwsContext::needs_hcscale
int needs_hcscale
Set if there are chroma planes to be converted.
Definition: swscale_internal.h:658
SwsContext::param
double param[2]
Input parameters for scaling algorithms that need them.
Definition: swscale_internal.h:343
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:58