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 "config.h"
25 #include "version.h"
26 
27 #include "libavutil/avassert.h"
28 #include "libavutil/avutil.h"
29 #include "libavutil/common.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/log.h"
32 #include "libavutil/mem_internal.h"
33 #include "libavutil/pixfmt.h"
34 #include "libavutil/pixdesc.h"
36 
37 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
38 
39 #define YUVRGB_TABLE_HEADROOM 512
40 #define YUVRGB_TABLE_LUMA_HEADROOM 512
41 
42 #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE
43 
44 #define DITHER1XBPP
45 
46 #if HAVE_BIGENDIAN
47 #define ALT32_CORR (-1)
48 #else
49 #define ALT32_CORR 1
50 #endif
51 
52 #if ARCH_X86_64
53 # define APCK_PTR2 8
54 # define APCK_COEF 16
55 # define APCK_SIZE 24
56 #else
57 # define APCK_PTR2 4
58 # define APCK_COEF 8
59 # define APCK_SIZE 16
60 #endif
61 
62 #define RETCODE_USE_CASCADE -12345
63 
64 struct SwsContext;
65 
66 typedef enum SwsDither {
74 } SwsDither;
75 
76 typedef enum SwsAlphaBlend {
82 
83 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
84  int srcStride[], int srcSliceY, int srcSliceH,
85  uint8_t *dst[], int dstStride[]);
86 
87 /**
88  * Write one line of horizontally scaled data to planar output
89  * without any additional vertical scaling (or point-scaling).
90  *
91  * @param src scaled source data, 15 bits for 8-10-bit output,
92  * 19 bits for 16-bit output (in int32_t)
93  * @param dest pointer to the output plane. For >8-bit
94  * output, this is in uint16_t
95  * @param dstW width of destination in pixels
96  * @param dither ordered dither array of type int16_t and size 8
97  * @param offset Dither offset
98  */
99 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
100  const uint8_t *dither, int offset);
101 
102 /**
103  * Write one line of horizontally scaled data to planar output
104  * with multi-point vertical scaling between input pixels.
105  *
106  * @param filter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
107  * @param src scaled luma (Y) or alpha (A) source data, 15 bits for
108  * 8-10-bit output, 19 bits for 16-bit output (in int32_t)
109  * @param filterSize number of vertical input lines to scale
110  * @param dest pointer to output plane. For >8-bit
111  * output, this is in uint16_t
112  * @param dstW width of destination pixels
113  * @param offset Dither offset
114  */
115 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
116  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 chroma to interleaved output
121  * with multi-point vertical scaling between input pixels.
122  *
123  * @param dstFormat destination pixel format
124  * @param chrDither ordered dither array of type uint8_t and size 8
125  * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
126  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit
127  * output, 19 bits for 16-bit output (in int32_t)
128  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit
129  * output, 19 bits for 16-bit output (in int32_t)
130  * @param chrFilterSize number of vertical chroma input lines to scale
131  * @param dest pointer to the output plane. For >8-bit
132  * output, this is in uint16_t
133  * @param dstW width of chroma planes
134  */
136  const uint8_t *chrDither,
137  const int16_t *chrFilter,
138  int chrFilterSize,
139  const int16_t **chrUSrc,
140  const int16_t **chrVSrc,
141  uint8_t *dest, int dstW);
142 
143 /**
144  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
145  * output without any additional vertical scaling (or point-scaling). Note
146  * that this function may do chroma scaling, see the "uvalpha" argument.
147  *
148  * @param c SWS scaling context
149  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
150  * 19 bits for 16-bit output (in int32_t)
151  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
152  * 19 bits for 16-bit output (in int32_t)
153  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
154  * 19 bits for 16-bit output (in int32_t)
155  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
156  * 19 bits for 16-bit output (in int32_t)
157  * @param dest pointer to the output plane. For 16-bit output, this is
158  * uint16_t
159  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
160  * to write into dest[]
161  * @param uvalpha chroma scaling coefficient for the second line of chroma
162  * pixels, either 2048 or 0. If 0, one chroma input is used
163  * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
164  * is set, it generates 1 output pixel). If 2048, two chroma
165  * input pixels should be averaged for 2 output pixels (this
166  * only happens if SWS_FLAG_FULL_CHR_INT is not set)
167  * @param y vertical line number for this output. This does not need
168  * to be used to calculate the offset in the destination,
169  * but can be used to generate comfort noise using dithering
170  * for some output formats.
171  */
172 typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
173  const int16_t *chrUSrc[2],
174  const int16_t *chrVSrc[2],
175  const int16_t *alpSrc, uint8_t *dest,
176  int dstW, int uvalpha, int y);
177 /**
178  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
179  * output by doing bilinear scaling between two input lines.
180  *
181  * @param c SWS scaling context
182  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
183  * 19 bits for 16-bit output (in int32_t)
184  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
185  * 19 bits for 16-bit output (in int32_t)
186  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
187  * 19 bits for 16-bit output (in int32_t)
188  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
189  * 19 bits for 16-bit output (in int32_t)
190  * @param dest pointer to the output plane. For 16-bit output, this is
191  * uint16_t
192  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
193  * to write into dest[]
194  * @param yalpha luma/alpha scaling coefficients for the second input line.
195  * The first line's coefficients can be calculated by using
196  * 4096 - yalpha
197  * @param uvalpha chroma scaling coefficient for the second input line. The
198  * first line's coefficients can be calculated by using
199  * 4096 - uvalpha
200  * @param y vertical line number for this output. This does not need
201  * to be used to calculate the offset in the destination,
202  * but can be used to generate comfort noise using dithering
203  * for some output formats.
204  */
205 typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
206  const int16_t *chrUSrc[2],
207  const int16_t *chrVSrc[2],
208  const int16_t *alpSrc[2],
209  uint8_t *dest,
210  int dstW, int yalpha, int uvalpha, int y);
211 /**
212  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
213  * output by doing multi-point vertical scaling between input pixels.
214  *
215  * @param c SWS scaling context
216  * @param lumFilter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
217  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
218  * 19 bits for 16-bit output (in int32_t)
219  * @param lumFilterSize number of vertical luma/alpha input lines to scale
220  * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
221  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
222  * 19 bits for 16-bit output (in int32_t)
223  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
224  * 19 bits for 16-bit output (in int32_t)
225  * @param chrFilterSize number of vertical chroma input lines to scale
226  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
227  * 19 bits for 16-bit output (in int32_t)
228  * @param dest pointer to the output plane. For 16-bit output, this is
229  * uint16_t
230  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
231  * to write into dest[]
232  * @param y vertical line number for this output. This does not need
233  * to be used to calculate the offset in the destination,
234  * but can be used to generate comfort noise using dithering
235  * or some output formats.
236  */
237 typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
238  const int16_t **lumSrc, int lumFilterSize,
239  const int16_t *chrFilter,
240  const int16_t **chrUSrc,
241  const int16_t **chrVSrc, int chrFilterSize,
242  const int16_t **alpSrc, uint8_t *dest,
243  int dstW, int y);
244 
245 /**
246  * Write one line of horizontally scaled Y/U/V/A to YUV/RGB
247  * output by doing multi-point vertical scaling between input pixels.
248  *
249  * @param c SWS scaling context
250  * @param lumFilter vertical luma/alpha scaling coefficients, 12 bits [0,4096]
251  * @param lumSrc scaled luma (Y) source data, 15 bits for 8-10-bit output,
252  * 19 bits for 16-bit output (in int32_t)
253  * @param lumFilterSize number of vertical luma/alpha input lines to scale
254  * @param chrFilter vertical chroma scaling coefficients, 12 bits [0,4096]
255  * @param chrUSrc scaled chroma (U) source data, 15 bits for 8-10-bit output,
256  * 19 bits for 16-bit output (in int32_t)
257  * @param chrVSrc scaled chroma (V) source data, 15 bits for 8-10-bit output,
258  * 19 bits for 16-bit output (in int32_t)
259  * @param chrFilterSize number of vertical chroma input lines to scale
260  * @param alpSrc scaled alpha (A) source data, 15 bits for 8-10-bit output,
261  * 19 bits for 16-bit output (in int32_t)
262  * @param dest pointer to the output planes. For 16-bit output, this is
263  * uint16_t
264  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
265  * to write into dest[]
266  * @param y vertical line number for this output. This does not need
267  * to be used to calculate the offset in the destination,
268  * but can be used to generate comfort noise using dithering
269  * or some output formats.
270  */
271 typedef void (*yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter,
272  const int16_t **lumSrc, int lumFilterSize,
273  const int16_t *chrFilter,
274  const int16_t **chrUSrc,
275  const int16_t **chrVSrc, int chrFilterSize,
276  const int16_t **alpSrc, uint8_t **dest,
277  int dstW, int y);
278 
279 struct SwsSlice;
280 struct SwsFilterDescriptor;
281 
282 /* This struct should be aligned on at least a 32-byte boundary. */
283 typedef struct SwsContext {
284  /**
285  * info on struct for av_log
286  */
288 
289  /**
290  * Note that src, dst, srcStride, dstStride will be copied in the
291  * sws_scale() wrapper so they can be freely modified here.
292  */
294  int srcW; ///< Width of source luma/alpha planes.
295  int srcH; ///< Height of source luma/alpha planes.
296  int dstH; ///< Height of destination luma/alpha planes.
297  int chrSrcW; ///< Width of source chroma planes.
298  int chrSrcH; ///< Height of source chroma planes.
299  int chrDstW; ///< Width of destination chroma planes.
300  int chrDstH; ///< Height of destination chroma planes.
303  enum AVPixelFormat dstFormat; ///< Destination pixel format.
304  enum AVPixelFormat srcFormat; ///< Source pixel format.
305  int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
306  int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
308  int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
309  int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
310  int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
311  int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
312  int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
313  int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
314  double param[2]; ///< Input parameters for scaling algorithms that need them.
315 
316  /* The cascaded_* fields allow spliting a scaler task into multiple
317  * sequential steps, this is for example used to limit the maximum
318  * downscaling factor that needs to be supported in one scaler.
319  */
322  uint8_t *cascaded_tmp[4];
324  uint8_t *cascaded1_tmp[4];
326 
327  double gamma_value;
330  uint16_t *gamma;
331  uint16_t *inv_gamma;
332 
333  int numDesc;
334  int descIndex[2];
335  int numSlice;
336  struct SwsSlice *slice;
338 
339  uint32_t pal_yuv[256];
340  uint32_t pal_rgb[256];
341 
342  float uint2float_lut[256];
343 
344  /**
345  * @name Scaled horizontal lines ring buffer.
346  * The horizontal scaler keeps just enough scaled lines in a ring buffer
347  * so they may be passed to the vertical scaler. The pointers to the
348  * allocated buffers for each line are duplicated in sequence in the ring
349  * buffer to simplify indexing and avoid wrapping around between lines
350  * inside the vertical scaler code. The wrapping is done before the
351  * vertical scaler is called.
352  */
353  //@{
354  int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
355  int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
356  //@}
357 
360 
361  /**
362  * @name Horizontal and vertical filters.
363  * To better understand the following fields, here is a pseudo-code of
364  * their usage in filtering a horizontal line:
365  * @code
366  * for (i = 0; i < width; i++) {
367  * dst[i] = 0;
368  * for (j = 0; j < filterSize; j++)
369  * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
370  * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
371  * }
372  * @endcode
373  */
374  //@{
375  int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
376  int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
377  int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
378  int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
379  int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
380  int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
381  int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
382  int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
383  int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
384  int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
385  int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
386  int vChrFilterSize; ///< Vertical filter size for chroma pixels.
387  //@}
388 
389  int lumMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
390  int chrMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
391  uint8_t *lumMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
392  uint8_t *chrMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
393 
396 
397  int dstY; ///< Last destination vertical line output from last slice.
398  int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
399  void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
400  // alignment ensures the offset can be added in a single
401  // instruction on e.g. ARM
403  uint8_t *table_rV[256 + 2*YUVRGB_TABLE_HEADROOM];
404  uint8_t *table_gU[256 + 2*YUVRGB_TABLE_HEADROOM];
405  uint8_t *table_bU[256 + 2*YUVRGB_TABLE_HEADROOM];
406  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
407 #define RY_IDX 0
408 #define GY_IDX 1
409 #define BY_IDX 2
410 #define RU_IDX 3
411 #define GU_IDX 4
412 #define BU_IDX 5
413 #define RV_IDX 6
414 #define GV_IDX 7
415 #define BV_IDX 8
416 #define RGB2YUV_SHIFT 15
417 
418  int *dither_error[4];
419 
420  //Colorspace stuff
421  int contrast, brightness, saturation; // for sws_getColorspaceDetails
424  int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
425  int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
428  int srcXYZ;
429  int dstXYZ;
440 
441 #define RED_DITHER "0*8"
442 #define GREEN_DITHER "1*8"
443 #define BLUE_DITHER "2*8"
444 #define Y_COEFF "3*8"
445 #define VR_COEFF "4*8"
446 #define UB_COEFF "5*8"
447 #define VG_COEFF "6*8"
448 #define UG_COEFF "7*8"
449 #define Y_OFFSET "8*8"
450 #define U_OFFSET "9*8"
451 #define V_OFFSET "10*8"
452 #define LUM_MMX_FILTER_OFFSET "11*8"
453 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)
454 #define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"
455 #define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"
456 #define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"
457 #define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"
458 #define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"
459 #define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"
460 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"
461 #define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"
462 #define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"
463 #define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"
464 #define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"
465 #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
466 
467  DECLARE_ALIGNED(8, uint64_t, redDither);
470 
471  DECLARE_ALIGNED(8, uint64_t, yCoeff);
472  DECLARE_ALIGNED(8, uint64_t, vrCoeff);
473  DECLARE_ALIGNED(8, uint64_t, ubCoeff);
474  DECLARE_ALIGNED(8, uint64_t, vgCoeff);
475  DECLARE_ALIGNED(8, uint64_t, ugCoeff);
476  DECLARE_ALIGNED(8, uint64_t, yOffset);
477  DECLARE_ALIGNED(8, uint64_t, uOffset);
478  DECLARE_ALIGNED(8, uint64_t, vOffset);
481  int dstW; ///< Width of destination luma/alpha planes.
482  DECLARE_ALIGNED(8, uint64_t, esp);
483  DECLARE_ALIGNED(8, uint64_t, vRounder);
484  DECLARE_ALIGNED(8, uint64_t, u_temp);
485  DECLARE_ALIGNED(8, uint64_t, v_temp);
486  DECLARE_ALIGNED(8, uint64_t, y_temp);
488  // alignment of these values is not necessary, but merely here
489  // to maintain the same offset across x8632 and x86-64. Once we
490  // use proper offset macros in the asm, they can be removed.
491  DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
492  DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
493  DECLARE_ALIGNED(8, uint16_t, dither16)[8];
494  DECLARE_ALIGNED(8, uint32_t, dither32)[8];
495 
496  const uint8_t *chrDither8, *lumDither8;
497 
498 #if HAVE_ALTIVEC
499  vector signed short CY;
500  vector signed short CRV;
501  vector signed short CBU;
502  vector signed short CGU;
503  vector signed short CGV;
504  vector signed short OY;
505  vector unsigned short CSHIFT;
506  vector signed short *vYCoeffsBank, *vCCoeffsBank;
507 #endif
508 
510 
511 /* pre defined color-spaces gamma */
512 #define XYZ_GAMMA (2.6f)
513 #define RGB_GAMMA (2.2f)
514  int16_t *xyzgamma;
515  int16_t *rgbgamma;
516  int16_t *xyzgammainv;
517  int16_t *rgbgammainv;
518  int16_t xyz2rgb_matrix[3][4];
519  int16_t rgb2xyz_matrix[3][4];
520 
521  /* function pointers for swscale() */
529 
530  /// Unscaled conversion of luma plane to YV12 for horizontal scaler.
531  void (*lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
532  int width, uint32_t *pal);
533  /// Unscaled conversion of alpha plane to YV12 for horizontal scaler.
534  void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
535  int width, uint32_t *pal);
536  /// Unscaled conversion of chroma planes to YV12 for horizontal scaler.
537  void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
538  const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
539  int width, uint32_t *pal);
540 
541  /**
542  * Functions to read planar input, such as planar RGB, and convert
543  * internally to Y/UV/A.
544  */
545  /** @{ */
546  void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
547  void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
548  int width, int32_t *rgb2yuv);
549  void (*readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
550  /** @} */
551 
552  /**
553  * Scale one horizontal line of input data using a bilinear filter
554  * to produce one line of output data. Compared to SwsContext->hScale(),
555  * please take note of the following caveats when using these:
556  * - Scaling is done using only 7 bits instead of 14-bit coefficients.
557  * - You can use no more than 5 input pixels to produce 4 output
558  * pixels. Therefore, this filter should not be used for downscaling
559  * by more than ~20% in width (because that equals more than 5/4th
560  * downscaling and thus more than 5 pixels input per 4 pixels output).
561  * - In general, bilinear filters create artifacts during downscaling
562  * (even when <20%), because one output pixel will span more than one
563  * input pixel, and thus some pixels will need edges of both neighbor
564  * pixels to interpolate the output pixel. Since you can use at most
565  * two input pixels per output pixel in bilinear scaling, this is
566  * impossible and thus downscaling by any size will create artifacts.
567  * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
568  * in SwsContext->flags.
569  */
570  /** @{ */
571  void (*hyscale_fast)(struct SwsContext *c,
572  int16_t *dst, int dstWidth,
573  const uint8_t *src, int srcW, int xInc);
574  void (*hcscale_fast)(struct SwsContext *c,
575  int16_t *dst1, int16_t *dst2, int dstWidth,
576  const uint8_t *src1, const uint8_t *src2,
577  int srcW, int xInc);
578  /** @} */
579 
580  /**
581  * Scale one horizontal line of input data using a filter over the input
582  * lines, to produce one (differently sized) line of output data.
583  *
584  * @param dst pointer to destination buffer for horizontally scaled
585  * data. If the number of bits per component of one
586  * destination pixel (SwsContext->dstBpc) is <= 10, data
587  * will be 15 bpc in 16 bits (int16_t) width. Else (i.e.
588  * SwsContext->dstBpc == 16), data will be 19bpc in
589  * 32 bits (int32_t) width.
590  * @param dstW width of destination image
591  * @param src pointer to source data to be scaled. If the number of
592  * bits per component of a source pixel (SwsContext->srcBpc)
593  * is 8, this is 8bpc in 8 bits (uint8_t) width. Else
594  * (i.e. SwsContext->dstBpc > 8), this is native depth
595  * in 16 bits (uint16_t) width. In other words, for 9-bit
596  * YUV input, this is 9bpc, for 10-bit YUV input, this is
597  * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
598  * @param filter filter coefficients to be used per output pixel for
599  * scaling. This contains 14bpp filtering coefficients.
600  * Guaranteed to contain dstW * filterSize entries.
601  * @param filterPos position of the first input pixel to be used for
602  * each output pixel during scaling. Guaranteed to
603  * contain dstW entries.
604  * @param filterSize the number of input coefficients to be used (and
605  * thus the number of input pixels to be used) for
606  * creating a single output pixel. Is aligned to 4
607  * (and input coefficients thus padded with zeroes)
608  * to simplify creating SIMD code.
609  */
610  /** @{ */
611  void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
612  const uint8_t *src, const int16_t *filter,
613  const int32_t *filterPos, int filterSize);
614  void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
615  const uint8_t *src, const int16_t *filter,
616  const int32_t *filterPos, int filterSize);
617  /** @} */
618 
619  /// Color range conversion function for luma plane if needed.
620  void (*lumConvertRange)(int16_t *dst, int width);
621  /// Color range conversion function for chroma planes if needed.
622  void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
623 
624  int needs_hcscale; ///< Set if there are chroma planes to be converted.
625 
627 
629 } SwsContext;
630 //FIXME check init (where 0)
631 
633 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
634  int fullRange, int brightness,
635  int contrast, int saturation);
636 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
637  int brightness, int contrast, int saturation);
638 
640 
642 
645 
647 {
649  av_assert0(desc);
650  return desc->comp[0].depth == 16;
651 }
652 
654 {
656  av_assert0(desc);
657  return desc->comp[0].depth == 32;
658 }
659 
661 {
663  av_assert0(desc);
664  return desc->comp[0].depth >= 9 && desc->comp[0].depth <= 14;
665 }
666 
668 {
670  av_assert0(desc);
671  return desc->flags & AV_PIX_FMT_FLAG_BE;
672 }
673 
675 {
677  av_assert0(desc);
678  return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
679 }
680 
682 {
684  av_assert0(desc);
685  return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
686 }
687 
688 /*
689  * Identity semi-planar YUV formats. Specifically, those are YUV formats
690  * where the second and third components (U & V) are on the same plane.
691  */
693 {
695  av_assert0(desc);
696  return (isPlanarYUV(pix_fmt) && desc->comp[1].plane == desc->comp[2].plane);
697 }
698 
700 {
702  av_assert0(desc);
703  return (desc->flags & AV_PIX_FMT_FLAG_RGB);
704 }
705 
707 {
709  av_assert0(desc);
710  return !(desc->flags & AV_PIX_FMT_FLAG_PAL) &&
711  !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL) &&
712  desc->nb_components <= 2 &&
715 }
716 
718 {
719  return pix_fmt == AV_PIX_FMT_RGB48BE ||
737 }
738 
740 {
741  return pix_fmt == AV_PIX_FMT_BGR48BE ||
759 }
760 
762 {
764  av_assert0(desc);
765  return !!(desc->flags & AV_PIX_FMT_FLAG_BAYER);
766 }
767 
769 {
771  av_assert0(desc);
772  return desc->comp[1].depth == 8;
773 }
774 
776 {
778  av_assert0(desc);
779  return (desc->flags & AV_PIX_FMT_FLAG_RGB) ||
781 }
782 
784 {
786  av_assert0(desc);
787  return desc->flags & AV_PIX_FMT_FLAG_FLOAT;
788 }
789 
791 {
793  av_assert0(desc);
794  if (pix_fmt == AV_PIX_FMT_PAL8)
795  return 1;
796  return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
797 }
798 
800 {
802  av_assert0(desc);
803  return (desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
806 }
807 
809 {
811  av_assert0(desc);
812  return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
813 }
814 
816 {
818  av_assert0(desc);
820 }
821 
823 {
825  av_assert0(desc);
826  return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
828 }
829 
831 {
832  switch (pix_fmt) {
833  case AV_PIX_FMT_PAL8:
835  case AV_PIX_FMT_BGR8:
836  case AV_PIX_FMT_GRAY8:
838  case AV_PIX_FMT_RGB8:
839  return 1;
840  default:
841  return 0;
842  }
843 }
844 
845 extern const uint64_t ff_dither4[2];
846 extern const uint64_t ff_dither8[2];
847 
848 extern const uint8_t ff_dither_2x2_4[3][8];
849 extern const uint8_t ff_dither_2x2_8[3][8];
850 extern const uint8_t ff_dither_4x4_16[5][8];
851 extern const uint8_t ff_dither_8x8_32[9][8];
852 extern const uint8_t ff_dither_8x8_73[9][8];
853 extern const uint8_t ff_dither_8x8_128[9][8];
854 extern const uint8_t ff_dither_8x8_220[9][8];
855 
856 extern const int32_t ff_yuv2rgb_coeffs[11][4];
857 
858 extern const AVClass ff_sws_context_class;
859 
860 /**
861  * Set c->swscale to an unscaled converter if one exists for the specific
862  * source and destination formats, bit depths, flags, etc.
863  */
868 
869 /**
870  * Return function pointer to fastest main scaler path function depending
871  * on architecture and available optimizations.
872  */
874 
889 
890 void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
891  const uint8_t *src, int srcW, int xInc);
892 void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
893  int dstWidth, const uint8_t *src1,
894  const uint8_t *src2, int srcW, int xInc);
895 int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode,
896  int16_t *filter, int32_t *filterPos,
897  int numSplits);
898 void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
899  int dstWidth, const uint8_t *src,
900  int srcW, int xInc);
901 void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
902  int dstWidth, const uint8_t *src1,
903  const uint8_t *src2, int srcW, int xInc);
904 
905 /**
906  * Allocate and return an SwsContext.
907  * This is like sws_getContext() but does not perform the init step, allowing
908  * the user to set additional AVOptions.
909  *
910  * @see sws_getContext()
911  */
913  int dstW, int dstH, enum AVPixelFormat dstFormat,
914  int flags, const double *param);
915 
916 int ff_sws_alphablendaway(SwsContext *c, const uint8_t *src[],
917  int srcStride[], int srcSliceY, int srcSliceH,
918  uint8_t *dst[], int dstStride[]);
919 
920 static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
921  int alpha, int bits, const int big_endian)
922 {
923  int i, j;
924  uint8_t *ptr = plane + stride * y;
925  int v = alpha ? 0xFFFF>>(16-bits) : (1<<(bits-1));
926  for (i = 0; i < height; i++) {
927 #define FILL(wfunc) \
928  for (j = 0; j < width; j++) {\
929  wfunc(ptr+2*j, v);\
930  }
931  if (big_endian) {
932  FILL(AV_WB16);
933  } else {
934  FILL(AV_WL16);
935  }
936  ptr += stride;
937  }
938 #undef FILL
939 }
940 
941 static inline void fillPlane32(uint8_t *plane, int stride, int width, int height, int y,
942  int alpha, int bits, const int big_endian, int is_float)
943 {
944  int i, j;
945  uint8_t *ptr = plane + stride * y;
946  uint32_t v;
947  uint32_t onef32 = 0x3f800000;
948  if (is_float)
949  v = alpha ? onef32 : 0;
950  else
951  v = alpha ? 0xFFFFFFFF>>(32-bits) : (1<<(bits-1));
952 
953  for (i = 0; i < height; i++) {
954 #define FILL(wfunc) \
955  for (j = 0; j < width; j++) {\
956  wfunc(ptr+4*j, v);\
957  }
958  if (big_endian) {
959  FILL(AV_WB32);
960  } else {
961  FILL(AV_WL32);
962  }
963  ptr += stride;
964  }
965 #undef FILL
966 }
967 
968 
969 #define MAX_SLICE_PLANES 4
970 
971 /// Slice plane
972 typedef struct SwsPlane
973 {
974  int available_lines; ///< max number of lines that can be hold by this plane
975  int sliceY; ///< index of first line
976  int sliceH; ///< number of lines
977  uint8_t **line; ///< line buffer
978  uint8_t **tmp; ///< Tmp line buffer used by mmx code
979 } SwsPlane;
980 
981 /**
982  * Struct which defines a slice of an image to be scaled or an output for
983  * a scaled slice.
984  * A slice can also be used as intermediate ring buffer for scaling steps.
985  */
986 typedef struct SwsSlice
987 {
988  int width; ///< Slice line width
989  int h_chr_sub_sample; ///< horizontal chroma subsampling factor
990  int v_chr_sub_sample; ///< vertical chroma subsampling factor
991  int is_ring; ///< flag to identify if this slice is a ring buffer
992  int should_free_lines; ///< flag to identify if there are dynamic allocated lines
993  enum AVPixelFormat fmt; ///< planes pixel format
994  SwsPlane plane[MAX_SLICE_PLANES]; ///< color planes
995 } SwsSlice;
996 
997 /**
998  * Struct which holds all necessary data for processing a slice.
999  * A processing step can be a color conversion or horizontal/vertical scaling.
1000  */
1001 typedef struct SwsFilterDescriptor
1002 {
1003  SwsSlice *src; ///< Source slice
1004  SwsSlice *dst; ///< Output slice
1005 
1006  int alpha; ///< Flag for processing alpha channel
1007  void *instance; ///< Filter instance data
1008 
1009  /// Function for processing input slice sliceH lines starting from line sliceY
1010  int (*process)(SwsContext *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH);
1012 
1013 // warp input lines in the form (src + width*i + j) to slice format (line[i][j])
1014 // relative=true means first line src[x][0] otherwise first line is src[x][lum/crh Y]
1015 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);
1016 
1017 // Initialize scaler filter descriptor chain
1019 
1020 // Free all filter data
1022 
1023 /*
1024  function for applying ring buffer logic into slice s
1025  It checks if the slice can hold more @lum lines, if yes
1026  do nothing otherwise remove @lum least used lines.
1027  It applies the same procedure for @chr lines.
1028 */
1029 int ff_rotate_slice(SwsSlice *s, int lum, int chr);
1030 
1031 /// initializes gamma conversion descriptor
1033 
1034 /// initializes lum pixel format conversion descriptor
1036 
1037 /// initializes lum horizontal scaling descriptor
1038 int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1039 
1040 /// initializes chr pixel format conversion descriptor
1042 
1043 /// initializes chr horizontal scaling descriptor
1044 int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1045 
1047 
1048 /// initializes vertical scaling descriptors
1050 
1051 /// setup vertical scaler functions
1053  yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2,
1054  yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx);
1055 
1056 //number of extra lines to process
1057 #define MAX_LINES_AHEAD 4
1058 
1059 #endif /* SWSCALE_SWSCALE_INTERNAL_H */
isBayer
static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:761
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:329
SwsContext::lastInChrBuf
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
Definition: swscale_internal.h:355
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:205
SwsContext::flags
int flags
Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc....
Definition: swscale_internal.h:398
SwsContext::vLumFilterSize
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
Definition: swscale_internal.h:385
SwsContext::saturation
int saturation
Definition: swscale_internal.h:421
stride
int stride
Definition: mace.c:144
SwsContext::vOffset
uint64_t vOffset
Definition: swscale_internal.h:478
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:99
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:537
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:774
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:1010
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:172
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:297
isPlanarRGB
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:822
SwsPlane::sliceH
int sliceH
number of lines
Definition: swscale_internal.h:976
isRGB
static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:699
isPacked
static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:799
SwsPlane::line
uint8_t ** line
line buffer
Definition: swscale_internal.h:977
SWS_ALPHA_BLEND_NONE
@ SWS_ALPHA_BLEND_NONE
Definition: swscale_internal.h:77
SwsContext::formatConvBuffer
uint8_t * formatConvBuffer
Definition: swscale_internal.h:358
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:481
ff_dither_8x8_220
const uint8_t ff_dither_8x8_220[9][8]
Definition: output.c:85
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:305
SwsContext::cascaded1_tmp
uint8_t * cascaded1_tmp[4]
Definition: swscale_internal.h:324
SwsContext::rgbgamma
int16_t * rgbgamma
Definition: swscale_internal.h:515
SWS_DITHER_BAYER
@ SWS_DITHER_BAYER
Definition: swscale_internal.h:69
AV_PIX_FMT_BGR32
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:364
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:681
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2541
SwsContext::dstY
int dstY
Last destination vertical line output from last slice.
Definition: swscale_internal.h:397
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:1885
SwsContext::cascaded_mainindex
int cascaded_mainindex
Definition: swscale_internal.h:325
SwsContext::alphablend
SwsAlphaBlend alphablend
Definition: swscale_internal.h:628
SwsContext::chrDither8
const uint8_t * chrDither8
Definition: swscale_internal.h:496
SwsContext::cascaded1_tmpStride
int cascaded1_tmpStride[4]
Definition: swscale_internal.h:323
SwsContext::yOffset
uint64_t yOffset
Definition: swscale_internal.h:476
SwsContext::vrCoeff
uint64_t vrCoeff
Definition: swscale_internal.h:472
SwsContext::hChrFilterPos
int32_t * hChrFilterPos
Array of horizontal filter starting positions for each dst[i] for chroma planes.
Definition: swscale_internal.h:380
AV_PIX_FMT_FLAG_FLOAT
#define AV_PIX_FMT_FLAG_FLOAT
The pixel format contains IEEE-754 floating point values.
Definition: pixdesc.h:159
SwsSlice::plane
SwsPlane plane[MAX_SLICE_PLANES]
color planes
Definition: swscale_internal.h:994
SWS_DITHER_A_DITHER
@ SWS_DITHER_A_DITHER
Definition: swscale_internal.h:71
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:473
SwsContext::dstColorspaceTable
int dstColorspaceTable[4]
Definition: swscale_internal.h:423
isGray
static av_always_inline int isGray(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:706
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:378
SwsContext::lumMmxFilter
int32_t lumMmxFilter[4 *MAX_FILTER_SIZE]
Definition: swscale_internal.h:479
SWS_ALPHA_BLEND_NB
@ SWS_ALPHA_BLEND_NB
Definition: swscale_internal.h:80
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:311
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:377
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:1001
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
SwsContext::av_class
const AVClass * av_class
info on struct for av_log
Definition: swscale_internal.h:287
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
AV_PIX_FMT_RGB32_1
#define AV_PIX_FMT_RGB32_1
Definition: pixfmt.h:363
SwsContext::yuv2planeX
yuv2planarX_fn yuv2planeX
Definition: swscale_internal.h:523
SwsContext::redDither
uint64_t redDither
Definition: swscale_internal.h:467
SwsContext::yuv2plane1
yuv2planar1_fn yuv2plane1
Definition: swscale_internal.h:522
AV_PIX_FMT_BGR24
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
SwsContext::srcRange
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
Definition: swscale_internal.h:424
CY
@ CY
Definition: vf_vpp_qsv.c:160
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:496
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:359
SwsContext::xyzgamma
int16_t * xyzgamma
Definition: swscale_internal.h:514
SwsContext::pal_rgb
uint32_t pal_rgb[256]
Definition: swscale_internal.h:340
SwsContext::yuv2anyX
yuv2anyX_fn yuv2anyX
Definition: swscale_internal.h:528
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:322
SwsSlice::fmt
enum AVPixelFormat fmt
planes pixel format
Definition: swscale_internal.h:993
SwsFilterDescriptor::src
SwsSlice * src
Source slice.
Definition: swscale_internal.h:1003
SwsContext::src0Alpha
int src0Alpha
Definition: swscale_internal.h:426
SwsContext::yuv2nv12cX
yuv2interleavedX_fn yuv2nv12cX
Definition: swscale_internal.h:524
SwsDither
SwsDither
Definition: swscale_internal.h:66
is16BPS
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:646
SwsFilterDescriptor::instance
void * instance
Filter instance data.
Definition: swscale_internal.h:1007
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:83
SwsContext::yuvTable
void * yuvTable
Definition: swscale_internal.h:399
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:271
SwsContext::use_mmx_vfilter
int use_mmx_vfilter
Definition: swscale_internal.h:509
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:546
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:574
SwsContext::rgbgammainv
int16_t * rgbgammainv
Definition: swscale_internal.h:517
SwsContext::src_v_chr_pos
int src_v_chr_pos
Definition: swscale_internal.h:432
SwsContext::xyz2rgb_matrix
int16_t xyz2rgb_matrix[3][4]
Definition: swscale_internal.h:518
AV_PIX_FMT_FLAG_HWACCEL
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:129
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:46
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:660
SwsContext::hLumFilterSize
int hLumFilterSize
Horizontal filter size for luma/alpha pixels.
Definition: swscale_internal.h:383
SwsContext::srcBpc
int srcBpc
Definition: swscale_internal.h:307
SwsSlice::h_chr_sub_sample
int h_chr_sub_sample
horizontal chroma subsampling factor
Definition: swscale_internal.h:989
SwsContext::gamma_value
double gamma_value
Definition: swscale_internal.h:327
SwsContext::dstXYZ
int dstXYZ
Definition: swscale_internal.h:429
SwsContext::lumYInc
int lumYInc
Definition: swscale_internal.h:302
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:72
ff_sws_init_range_convert
av_cold void ff_sws_init_range_convert(SwsContext *c)
Definition: swscale.c:527
SwsContext::dither_error
int * dither_error[4]
Definition: swscale_internal.h:418
MAX_FILTER_SIZE
#define MAX_FILTER_SIZE
Definition: swscale_internal.h:42
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:402
SwsContext::srcFormat
enum AVPixelFormat srcFormat
Source pixel format.
Definition: swscale_internal.h:304
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:491
SwsContext::chrSrcH
int chrSrcH
Height of source chroma planes.
Definition: swscale_internal.h:298
SwsContext::table_bU
uint8_t * table_bU[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:405
YUVRGB_TABLE_HEADROOM
#define YUVRGB_TABLE_HEADROOM
Definition: swscale_internal.h:39
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:389
SwsContext::dither
SwsDither dither
Definition: swscale_internal.h:626
SWS_DITHER_ED
@ SWS_DITHER_ED
Definition: swscale_internal.h:70
width
#define width
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
SwsContext::ugCoeff
uint64_t ugCoeff
Definition: swscale_internal.h:475
SwsContext::brightness
int brightness
Definition: swscale_internal.h:421
ff_dither_8x8_32
const uint8_t ff_dither_8x8_32[9][8]
Definition: output.c:60
CSHIFT
#define CSHIFT
Definition: audiogen.c:72
SwsSlice::width
int width
Slice line width.
Definition: swscale_internal.h:988
SwsContext::lumConvertRange
void(* lumConvertRange)(int16_t *dst, int width)
Color range conversion function for luma plane if needed.
Definition: swscale_internal.h:620
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:978
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:148
ff_sws_context_class
const AVClass ff_sws_context_class
Definition: options.c:87
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:40
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:614
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:421
SwsContext::lumXInc
int lumXInc
Definition: swscale_internal.h:301
AV_PIX_FMT_BGR32_1
#define AV_PIX_FMT_BGR32_1
Definition: pixfmt.h:365
SwsContext::vLumFilterPos
int32_t * vLumFilterPos
Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
Definition: swscale_internal.h:381
SwsContext::vRounder
uint64_t vRounder
Definition: swscale_internal.h:483
SwsContext::dstFormat
enum AVPixelFormat dstFormat
Destination pixel format.
Definition: swscale_internal.h:303
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:434
isSemiPlanarYUV
static av_always_inline int isSemiPlanarYUV(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:692
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
rgb2yuv
RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT uint8_t const uint8_t const uint8_t const uint8_t int uint32_t * rgb2yuv
Definition: input.c:401
SwsContext::yuv2packed2
yuv2packed2_fn yuv2packed2
Definition: swscale_internal.h:526
SwsContext::readChrPlanar
void(* readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width, int32_t *rgb2yuv)
Definition: swscale_internal.h:547
SWS_DITHER_NONE
@ SWS_DITHER_NONE
Definition: swscale_internal.h:67
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->swscale to an unscaled converter if one exists for the specific source and destination formats...
Definition: swscale_unscaled.c:1975
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
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:516
SwsPlane::available_lines
int available_lines
max number of lines that can be hold by this plane
Definition: swscale_internal.h:974
SWS_ALPHA_BLEND_UNIFORM
@ SWS_ALPHA_BLEND_UNIFORM
Definition: swscale_internal.h:78
SwsContext::yuv2rgb_v2g_coeff
int yuv2rgb_v2g_coeff
Definition: swscale_internal.h:437
AV_WB16
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
SwsContext::gamma_flag
int gamma_flag
Definition: swscale_internal.h:328
SwsContext::dstBpc
int dstBpc
Definition: swscale_internal.h:307
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:391
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
NB_SWS_DITHER
@ NB_SWS_DITHER
Definition: swscale_internal.h:73
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:972
SwsContext::greenDither
uint64_t greenDither
Definition: swscale_internal.h:468
SwsContext::blueDither
uint64_t blueDither
Definition: swscale_internal.h:469
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:519
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:487
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:436
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:431
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
SwsContext::vChrFilterPos
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
Definition: swscale_internal.h:382
isBE
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:667
SwsContext::sliceDir
int sliceDir
Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
Definition: swscale_internal.h:313
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:309
ff_getSwsFunc
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
Definition: swscale.c:584
SwsContext::yuv2rgb_u2g_coeff
int yuv2rgb_u2g_coeff
Definition: swscale_internal.h:438
SwsContext::hLumFilterPos
int32_t * hLumFilterPos
Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
Definition: swscale_internal.h:379
SwsFilterDescriptor::dst
SwsSlice * dst
Output slice.
Definition: swscale_internal.h:1004
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:137
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:920
usePal
static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:830
SwsContext::v_temp
uint64_t v_temp
Definition: swscale_internal.h:485
isAnyRGB
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:775
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:306
SwsContext::srcColorspaceTable
int srcColorspaceTable[4]
Definition: swscale_internal.h:422
SwsContext::desc
struct SwsFilterDescriptor * desc
Definition: swscale_internal.h:337
SwsContext::srcH
int srcH
Height of source luma/alpha planes.
Definition: swscale_internal.h:295
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:674
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:76
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:611
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:679
SwsContext::uOffset
uint64_t uOffset
Definition: swscale_internal.h:477
is32BPS
static av_always_inline int is32BPS(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:653
AV_WL16
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
SwsContext::dither32
uint32_t dither32[8]
Definition: swscale_internal.h:494
height
#define height
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:362
isBGRinInt
static av_always_inline int isBGRinInt(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:739
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:390
SwsContext::hLumFilter
int16_t * hLumFilter
Array of horizontal filter coefficients for luma/alpha planes.
Definition: swscale_internal.h:375
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:527
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:386
SwsContext::y_temp
uint64_t y_temp
Definition: swscale_internal.h:486
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:941
AV_PIX_FMT_FLAG_BAYER
#define AV_PIX_FMT_FLAG_BAYER
The pixel format is following a Bayer pattern.
Definition: pixdesc.h:153
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:117
src1
#define src1
Definition: h264pred.c:140
SwsContext::srcW
int srcW
Width of source luma/alpha planes.
Definition: swscale_internal.h:294
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
i
int i
Definition: input.c:407
SwsContext::yuv2rgb_u2b_coeff
int yuv2rgb_u2b_coeff
Definition: swscale_internal.h:439
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:49
log.h
SwsContext::dither16
uint16_t dither16[8]
Definition: swscale_internal.h:493
SwsContext::dstRange
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
Definition: swscale_internal.h:425
SwsContext::numSlice
int numSlice
Definition: swscale_internal.h:335
common.h
SwsSlice::should_free_lines
int should_free_lines
flag to identify if there are dynamic allocated lines
Definition: swscale_internal.h:992
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:135
AV_PIX_FMT_FLAG_BE
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:117
SwsSlice::is_ring
int is_ring
flag to identify if this slice is a ring buffer
Definition: swscale_internal.h:991
SwsContext::readAlpPlanar
void(* readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv)
Definition: swscale_internal.h:549
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:534
SwsContext::hChrFilter
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
Definition: swscale_internal.h:376
SwsSlice::v_chr_sub_sample
int v_chr_sub_sample
vertical chroma subsampling factor
Definition: swscale_internal.h:990
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:986
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:783
SwsContext::chrYInc
int chrYInc
Definition: swscale_internal.h:302
SwsContext::slice
struct SwsSlice * slice
Definition: swscale_internal.h:336
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:1006
SwsContext::srcXYZ
int srcXYZ
Definition: swscale_internal.h:428
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:435
SWS_ALPHA_BLEND_CHECKERBOARD
@ SWS_ALPHA_BLEND_CHECKERBOARD
Definition: swscale_internal.h:79
SwsContext::numDesc
int numDesc
Definition: swscale_internal.h:333
SwsContext::table_rV
uint8_t * table_rV[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:403
SwsContext::chrDstH
int chrDstH
Height of destination chroma planes.
Definition: swscale_internal.h:300
ff_free_filters
int ff_free_filters(SwsContext *c)
Definition: slice.c:379
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:406
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:115
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:2543
SwsContext::inv_gamma
uint16_t * inv_gamma
Definition: swscale_internal.h:331
MAX_SLICE_PLANES
#define MAX_SLICE_PLANES
Definition: swscale_internal.h:969
isPackedRGB
static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:815
SwsContext::cascaded_tmpStride
int cascaded_tmpStride[4]
Definition: swscale_internal.h:321
SwsContext::table_gU
uint8_t * table_gU[256+2 *YUVRGB_TABLE_HEADROOM]
Definition: swscale_internal.h:404
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:237
dstV
uint16_t * dstV
Definition: input.c:403
SwsContext::chrXInc
int chrXInc
Definition: swscale_internal.h:301
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:133
SwsContext::dst0Alpha
int dst0Alpha
Definition: swscale_internal.h:427
SwsContext::warned_unuseable_bilinear
int warned_unuseable_bilinear
Definition: swscale_internal.h:395
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:480
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:471
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:531
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:768
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:975
SwsContext::hChrFilterSize
int hChrFilterSize
Horizontal filter size for chroma pixels.
Definition: swscale_internal.h:384
SwsContext::vChrDrop
int vChrDrop
Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user...
Definition: swscale_internal.h:312
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:70
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:484
lum
static double lum(void *priv, double x, double y, int plane)
Definition: vf_fftfilt.c:95
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
SwsContext::pal_yuv
uint32_t pal_yuv[256]
Definition: swscale_internal.h:339
SwsContext::chrDstHSubSample
int chrDstHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination...
Definition: swscale_internal.h:310
SWS_DITHER_AUTO
@ SWS_DITHER_AUTO
Definition: swscale_internal.h:68
isRGBinInt
static av_always_inline int isRGBinInt(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:717
SwsContext::chrDstW
int chrDstW
Width of destination chroma planes.
Definition: swscale_internal.h:299
SwsContext::vgCoeff
uint64_t vgCoeff
Definition: swscale_internal.h:474
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:430
SwsContext::yuv2packed1
yuv2packed1_fn yuv2packed1
Definition: swscale_internal.h:525
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:330
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:808
SwsContext::cascaded_context
struct SwsContext * cascaded_context[3]
Definition: swscale_internal.h:320
SwsContext::descIndex
int descIndex[2]
Definition: swscale_internal.h:334
SwsContext::swscale
SwsFunc swscale
Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be fre...
Definition: swscale_internal.h:293
SwsContext::uint2float_lut
float uint2float_lut[256]
Definition: swscale_internal.h:342
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:622
SwsContext::dst_v_chr_pos
int dst_v_chr_pos
Definition: swscale_internal.h:433
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:72
int
int
Definition: ffmpeg_filter.c:156
SwsContext
Definition: swscale_internal.h:283
SwsContext::chrSrcHSubSample
int chrSrcHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source imag...
Definition: swscale_internal.h:308
SwsContext::chrMmxextFilterCode
uint8_t * chrMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
Definition: swscale_internal.h:392
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:121
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:296
SwsContext::esp
uint64_t esp
Definition: swscale_internal.h:482
SwsContext::canMMXEXTBeUsed
int canMMXEXTBeUsed
Definition: swscale_internal.h:394
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:571
ff_dither_4x4_16
const uint8_t ff_dither_4x4_16[5][8]
Definition: output.c:52
ff_dither_2x2_4
const uint8_t ff_dither_2x2_4[3][8]
Definition: output.c:40
isALPHA
static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:790
SwsContext::lastInLumBuf
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
Definition: swscale_internal.h:354
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:492
SwsContext::needs_hcscale
int needs_hcscale
Set if there are chroma planes to be converted.
Definition: swscale_internal.h:624
SwsContext::param
double param[2]
Input parameters for scaling algorithms that need them.
Definition: swscale_internal.h:314
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:59