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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 
26 #if HAVE_ALTIVEC_H
27 #include <altivec.h>
28 #endif
29 
30 #include "version.h"
31 
32 #include "libavutil/avassert.h"
33 #include "libavutil/avutil.h"
34 #include "libavutil/common.h"
35 #include "libavutil/intreadwrite.h"
36 #include "libavutil/log.h"
37 #include "libavutil/pixfmt.h"
38 #include "libavutil/pixdesc.h"
39 
40 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
41 
42 #define YUVRGB_TABLE_HEADROOM 256
43 
44 #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE
45 
46 #define DITHER1XBPP
47 
48 #if HAVE_BIGENDIAN
49 #define ALT32_CORR (-1)
50 #else
51 #define ALT32_CORR 1
52 #endif
53 
54 #if ARCH_X86_64
55 # define APCK_PTR2 8
56 # define APCK_COEF 16
57 # define APCK_SIZE 24
58 #else
59 # define APCK_PTR2 4
60 # define APCK_COEF 8
61 # define APCK_SIZE 16
62 #endif
63 
64 #define RETCODE_USE_CASCADE -12345
65 
66 struct SwsContext;
67 
68 typedef enum SwsDither {
76 } SwsDither;
77 
78 typedef enum SwsAlphaBlend {
84 
85 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
86  int srcStride[], int srcSliceY, int srcSliceH,
87  uint8_t *dst[], int dstStride[]);
88 
89 /**
90  * Write one line of horizontally scaled data to planar output
91  * without any additional vertical scaling (or point-scaling).
92  *
93  * @param src scaled source data, 15bit for 8-10bit output,
94  * 19-bit for 16bit output (in int32_t)
95  * @param dest pointer to the output plane. For >8bit
96  * output, this is in uint16_t
97  * @param dstW width of destination in pixels
98  * @param dither ordered dither array of type int16_t and size 8
99  * @param offset Dither offset
100  */
101 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
102  const uint8_t *dither, int offset);
103 
104 /**
105  * Write one line of horizontally scaled data to planar output
106  * with multi-point vertical scaling between input pixels.
107  *
108  * @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
109  * @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
110  * 19-bit for 16bit output (in int32_t)
111  * @param filterSize number of vertical input lines to scale
112  * @param dest pointer to output plane. For >8bit
113  * output, this is in uint16_t
114  * @param dstW width of destination pixels
115  * @param offset Dither offset
116  */
117 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
118  const int16_t **src, uint8_t *dest, int dstW,
119  const uint8_t *dither, int offset);
120 
121 /**
122  * Write one line of horizontally scaled chroma to interleaved output
123  * with multi-point vertical scaling between input pixels.
124  *
125  * @param c SWS scaling context
126  * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
127  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
128  * 19-bit for 16bit output (in int32_t)
129  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
130  * 19-bit for 16bit output (in int32_t)
131  * @param chrFilterSize number of vertical chroma input lines to scale
132  * @param dest pointer to the output plane. For >8bit
133  * output, this is in uint16_t
134  * @param dstW width of chroma planes
135  */
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, 15bit for 8-10bit output,
150  * 19-bit for 16bit output (in int32_t)
151  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
152  * 19-bit for 16bit output (in int32_t)
153  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
154  * 19-bit for 16bit output (in int32_t)
155  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
156  * 19-bit for 16bit output (in int32_t)
157  * @param dest pointer to the output plane. For 16bit 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, 15bit for 8-10bit output,
183  * 19-bit for 16bit output (in int32_t)
184  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
185  * 19-bit for 16bit output (in int32_t)
186  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
187  * 19-bit for 16bit output (in int32_t)
188  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
189  * 19-bit for 16bit output (in int32_t)
190  * @param dest pointer to the output plane. For 16bit 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, 12bit [0,4096]
217  * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
218  * 19-bit for 16bit output (in int32_t)
219  * @param lumFilterSize number of vertical luma/alpha input lines to scale
220  * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
221  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
222  * 19-bit for 16bit output (in int32_t)
223  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
224  * 19-bit for 16bit output (in int32_t)
225  * @param chrFilterSize number of vertical chroma input lines to scale
226  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
227  * 19-bit for 16bit output (in int32_t)
228  * @param dest pointer to the output plane. For 16bit 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, 12bit [0,4096]
251  * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
252  * 19-bit for 16bit output (in int32_t)
253  * @param lumFilterSize number of vertical luma/alpha input lines to scale
254  * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
255  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
256  * 19-bit for 16bit output (in int32_t)
257  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
258  * 19-bit for 16bit output (in int32_t)
259  * @param chrFilterSize number of vertical chroma input lines to scale
260  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
261  * 19-bit for 16bit output (in int32_t)
262  * @param dest pointer to the output planes. For 16bit 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  */
325 
326  double gamma_value;
329  uint16_t *gamma;
330  uint16_t *inv_gamma;
331 
332  int numDesc;
333  int descIndex[2];
334  int numSlice;
335  struct SwsSlice *slice;
337 
338  uint32_t pal_yuv[256];
339  uint32_t pal_rgb[256];
340 
341  /**
342  * @name Scaled horizontal lines ring buffer.
343  * The horizontal scaler keeps just enough scaled lines in a ring buffer
344  * so they may be passed to the vertical scaler. The pointers to the
345  * allocated buffers for each line are duplicated in sequence in the ring
346  * buffer to simplify indexing and avoid wrapping around between lines
347  * inside the vertical scaler code. The wrapping is done before the
348  * vertical scaler is called.
349  */
350  //@{
351  int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
352  int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
353  int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
354  int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
355  int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
356  int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
357  int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
358  int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
359  int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
360  int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
361  //@}
362 
364 
365  /**
366  * @name Horizontal and vertical filters.
367  * To better understand the following fields, here is a pseudo-code of
368  * their usage in filtering a horizontal line:
369  * @code
370  * for (i = 0; i < width; i++) {
371  * dst[i] = 0;
372  * for (j = 0; j < filterSize; j++)
373  * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
374  * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
375  * }
376  * @endcode
377  */
378  //@{
379  int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
380  int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
381  int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
382  int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
383  int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
384  int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
385  int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
386  int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
387  int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
388  int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
389  int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
390  int vChrFilterSize; ///< Vertical filter size for chroma pixels.
391  //@}
392 
393  int lumMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
394  int chrMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
395  uint8_t *lumMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
396  uint8_t *chrMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
397 
399 
400  int dstY; ///< Last destination vertical line output from last slice.
401  int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
402  void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
403  // alignment ensures the offset can be added in a single
404  // instruction on e.g. ARM
409  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
410 #define RY_IDX 0
411 #define GY_IDX 1
412 #define BY_IDX 2
413 #define RU_IDX 3
414 #define GU_IDX 4
415 #define BU_IDX 5
416 #define RV_IDX 6
417 #define GV_IDX 7
418 #define BV_IDX 8
419 #define RGB2YUV_SHIFT 15
420 
421  int *dither_error[4];
422 
423  //Colorspace stuff
424  int contrast, brightness, saturation; // for sws_getColorspaceDetails
427  int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
428  int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
431  int srcXYZ;
432  int dstXYZ;
443 
444 #define RED_DITHER "0*8"
445 #define GREEN_DITHER "1*8"
446 #define BLUE_DITHER "2*8"
447 #define Y_COEFF "3*8"
448 #define VR_COEFF "4*8"
449 #define UB_COEFF "5*8"
450 #define VG_COEFF "6*8"
451 #define UG_COEFF "7*8"
452 #define Y_OFFSET "8*8"
453 #define U_OFFSET "9*8"
454 #define V_OFFSET "10*8"
455 #define LUM_MMX_FILTER_OFFSET "11*8"
456 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)
457 #define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"
458 #define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"
459 #define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"
460 #define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"
461 #define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"
462 #define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"
463 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"
464 #define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"
465 #define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"
466 #define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"
467 #define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"
468 #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
469 
470  DECLARE_ALIGNED(8, uint64_t, redDither);
473 
474  DECLARE_ALIGNED(8, uint64_t, yCoeff);
475  DECLARE_ALIGNED(8, uint64_t, vrCoeff);
476  DECLARE_ALIGNED(8, uint64_t, ubCoeff);
477  DECLARE_ALIGNED(8, uint64_t, vgCoeff);
478  DECLARE_ALIGNED(8, uint64_t, ugCoeff);
479  DECLARE_ALIGNED(8, uint64_t, yOffset);
480  DECLARE_ALIGNED(8, uint64_t, uOffset);
481  DECLARE_ALIGNED(8, uint64_t, vOffset);
484  int dstW; ///< Width of destination luma/alpha planes.
485  DECLARE_ALIGNED(8, uint64_t, esp);
486  DECLARE_ALIGNED(8, uint64_t, vRounder);
487  DECLARE_ALIGNED(8, uint64_t, u_temp);
488  DECLARE_ALIGNED(8, uint64_t, v_temp);
489  DECLARE_ALIGNED(8, uint64_t, y_temp);
491  // alignment of these values is not necessary, but merely here
492  // to maintain the same offset across x8632 and x86-64. Once we
493  // use proper offset macros in the asm, they can be removed.
494  DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
495  DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
496  DECLARE_ALIGNED(8, uint16_t, dither16)[8];
497  DECLARE_ALIGNED(8, uint32_t, dither32)[8];
498 
500 
501 #if HAVE_ALTIVEC
502  vector signed short CY;
503  vector signed short CRV;
504  vector signed short CBU;
505  vector signed short CGU;
506  vector signed short CGV;
507  vector signed short OY;
508  vector unsigned short CSHIFT;
509  vector signed short *vYCoeffsBank, *vCCoeffsBank;
510 #endif
511 
513 
514 /* pre defined color-spaces gamma */
515 #define XYZ_GAMMA (2.6f)
516 #define RGB_GAMMA (2.2f)
517  int16_t *xyzgamma;
518  int16_t *rgbgamma;
519  int16_t *xyzgammainv;
520  int16_t *rgbgammainv;
521  int16_t xyz2rgb_matrix[3][4];
522  int16_t rgb2xyz_matrix[3][4];
523 
524  /* function pointers for swscale() */
532 
533  /// Unscaled conversion of luma plane to YV12 for horizontal scaler.
534  void (*lumToYV12)(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 alpha plane to YV12 for horizontal scaler.
537  void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
538  int width, uint32_t *pal);
539  /// Unscaled conversion of chroma planes to YV12 for horizontal scaler.
540  void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
541  const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
542  int width, uint32_t *pal);
543 
544  /**
545  * Functions to read planar input, such as planar RGB, and convert
546  * internally to Y/UV/A.
547  */
548  /** @{ */
550  void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
551  int width, int32_t *rgb2yuv);
553  /** @} */
554 
555  /**
556  * Scale one horizontal line of input data using a bilinear filter
557  * to produce one line of output data. Compared to SwsContext->hScale(),
558  * please take note of the following caveats when using these:
559  * - Scaling is done using only 7bit instead of 14bit coefficients.
560  * - You can use no more than 5 input pixels to produce 4 output
561  * pixels. Therefore, this filter should not be used for downscaling
562  * by more than ~20% in width (because that equals more than 5/4th
563  * downscaling and thus more than 5 pixels input per 4 pixels output).
564  * - In general, bilinear filters create artifacts during downscaling
565  * (even when <20%), because one output pixel will span more than one
566  * input pixel, and thus some pixels will need edges of both neighbor
567  * pixels to interpolate the output pixel. Since you can use at most
568  * two input pixels per output pixel in bilinear scaling, this is
569  * impossible and thus downscaling by any size will create artifacts.
570  * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
571  * in SwsContext->flags.
572  */
573  /** @{ */
575  int16_t *dst, int dstWidth,
576  const uint8_t *src, int srcW, int xInc);
578  int16_t *dst1, int16_t *dst2, int dstWidth,
579  const uint8_t *src1, const uint8_t *src2,
580  int srcW, int xInc);
581  /** @} */
582 
583  /**
584  * Scale one horizontal line of input data using a filter over the input
585  * lines, to produce one (differently sized) line of output data.
586  *
587  * @param dst pointer to destination buffer for horizontally scaled
588  * data. If the number of bits per component of one
589  * destination pixel (SwsContext->dstBpc) is <= 10, data
590  * will be 15bpc in 16bits (int16_t) width. Else (i.e.
591  * SwsContext->dstBpc == 16), data will be 19bpc in
592  * 32bits (int32_t) width.
593  * @param dstW width of destination image
594  * @param src pointer to source data to be scaled. If the number of
595  * bits per component of a source pixel (SwsContext->srcBpc)
596  * is 8, this is 8bpc in 8bits (uint8_t) width. Else
597  * (i.e. SwsContext->dstBpc > 8), this is native depth
598  * in 16bits (uint16_t) width. In other words, for 9-bit
599  * YUV input, this is 9bpc, for 10-bit YUV input, this is
600  * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
601  * @param filter filter coefficients to be used per output pixel for
602  * scaling. This contains 14bpp filtering coefficients.
603  * Guaranteed to contain dstW * filterSize entries.
604  * @param filterPos position of the first input pixel to be used for
605  * each output pixel during scaling. Guaranteed to
606  * contain dstW entries.
607  * @param filterSize the number of input coefficients to be used (and
608  * thus the number of input pixels to be used) for
609  * creating a single output pixel. Is aligned to 4
610  * (and input coefficients thus padded with zeroes)
611  * to simplify creating SIMD code.
612  */
613  /** @{ */
614  void (*hyScale)(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  void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
618  const uint8_t *src, const int16_t *filter,
619  const int32_t *filterPos, int filterSize);
620  /** @} */
621 
622  /// Color range conversion function for luma plane if needed.
623  void (*lumConvertRange)(int16_t *dst, int width);
624  /// Color range conversion function for chroma planes if needed.
625  void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
626 
627  int needs_hcscale; ///< Set if there are chroma planes to be converted.
628 
630 
632 } SwsContext;
633 //FIXME check init (where 0)
634 
636 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
637  int fullRange, int brightness,
638  int contrast, int saturation);
639 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
640  int brightness, int contrast, int saturation);
641 
643  int lastInLumBuf, int lastInChrBuf);
644 
646 
649 
651 {
652  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
653  av_assert0(desc);
654  return desc->comp[0].depth_minus1 == 15;
655 }
656 
658 {
659  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
660  av_assert0(desc);
661  return desc->comp[0].depth_minus1 >= 8 && desc->comp[0].depth_minus1 <= 13;
662 }
663 
664 #define isNBPS(x) is9_OR_10BPS(x)
665 
667 {
668  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
669  av_assert0(desc);
670  return desc->flags & AV_PIX_FMT_FLAG_BE;
671 }
672 
674 {
675  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
676  av_assert0(desc);
677  return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
678 }
679 
681 {
682  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
683  av_assert0(desc);
684  return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
685 }
686 
688 {
689  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
690  av_assert0(desc);
691  return (desc->flags & AV_PIX_FMT_FLAG_RGB);
692 }
693 
694 #if 0 // FIXME
695 #define isGray(x) \
696  (!(av_pix_fmt_desc_get(x)->flags & AV_PIX_FMT_FLAG_PAL) && \
697  av_pix_fmt_desc_get(x)->nb_components <= 2)
698 #else
699 #define isGray(x) \
700  ((x) == AV_PIX_FMT_GRAY8 || \
701  (x) == AV_PIX_FMT_YA8 || \
702  (x) == AV_PIX_FMT_GRAY16BE || \
703  (x) == AV_PIX_FMT_GRAY16LE || \
704  (x) == AV_PIX_FMT_YA16BE || \
705  (x) == AV_PIX_FMT_YA16LE)
706 #endif
707 
708 #define isRGBinInt(x) \
709  ( \
710  (x) == AV_PIX_FMT_RGB48BE || \
711  (x) == AV_PIX_FMT_RGB48LE || \
712  (x) == AV_PIX_FMT_RGB32 || \
713  (x) == AV_PIX_FMT_RGB32_1 || \
714  (x) == AV_PIX_FMT_RGB24 || \
715  (x) == AV_PIX_FMT_RGB565BE || \
716  (x) == AV_PIX_FMT_RGB565LE || \
717  (x) == AV_PIX_FMT_RGB555BE || \
718  (x) == AV_PIX_FMT_RGB555LE || \
719  (x) == AV_PIX_FMT_RGB444BE || \
720  (x) == AV_PIX_FMT_RGB444LE || \
721  (x) == AV_PIX_FMT_RGB8 || \
722  (x) == AV_PIX_FMT_RGB4 || \
723  (x) == AV_PIX_FMT_RGB4_BYTE || \
724  (x) == AV_PIX_FMT_RGBA64BE || \
725  (x) == AV_PIX_FMT_RGBA64LE || \
726  (x) == AV_PIX_FMT_MONOBLACK || \
727  (x) == AV_PIX_FMT_MONOWHITE \
728  )
729 #define isBGRinInt(x) \
730  ( \
731  (x) == AV_PIX_FMT_BGR48BE || \
732  (x) == AV_PIX_FMT_BGR48LE || \
733  (x) == AV_PIX_FMT_BGR32 || \
734  (x) == AV_PIX_FMT_BGR32_1 || \
735  (x) == AV_PIX_FMT_BGR24 || \
736  (x) == AV_PIX_FMT_BGR565BE || \
737  (x) == AV_PIX_FMT_BGR565LE || \
738  (x) == AV_PIX_FMT_BGR555BE || \
739  (x) == AV_PIX_FMT_BGR555LE || \
740  (x) == AV_PIX_FMT_BGR444BE || \
741  (x) == AV_PIX_FMT_BGR444LE || \
742  (x) == AV_PIX_FMT_BGR8 || \
743  (x) == AV_PIX_FMT_BGR4 || \
744  (x) == AV_PIX_FMT_BGR4_BYTE || \
745  (x) == AV_PIX_FMT_BGRA64BE || \
746  (x) == AV_PIX_FMT_BGRA64LE || \
747  (x) == AV_PIX_FMT_MONOBLACK || \
748  (x) == AV_PIX_FMT_MONOWHITE \
749  )
750 
751 #define isRGBinBytes(x) ( \
752  (x) == AV_PIX_FMT_RGB48BE \
753  || (x) == AV_PIX_FMT_RGB48LE \
754  || (x) == AV_PIX_FMT_RGBA64BE \
755  || (x) == AV_PIX_FMT_RGBA64LE \
756  || (x) == AV_PIX_FMT_RGBA \
757  || (x) == AV_PIX_FMT_ARGB \
758  || (x) == AV_PIX_FMT_RGB24 \
759  )
760 #define isBGRinBytes(x) ( \
761  (x) == AV_PIX_FMT_BGR48BE \
762  || (x) == AV_PIX_FMT_BGR48LE \
763  || (x) == AV_PIX_FMT_BGRA64BE \
764  || (x) == AV_PIX_FMT_BGRA64LE \
765  || (x) == AV_PIX_FMT_BGRA \
766  || (x) == AV_PIX_FMT_ABGR \
767  || (x) == AV_PIX_FMT_BGR24 \
768  )
769 
770 #define isBayer(x) ( \
771  (x)==AV_PIX_FMT_BAYER_BGGR8 \
772  || (x)==AV_PIX_FMT_BAYER_BGGR16LE \
773  || (x)==AV_PIX_FMT_BAYER_BGGR16BE \
774  || (x)==AV_PIX_FMT_BAYER_RGGB8 \
775  || (x)==AV_PIX_FMT_BAYER_RGGB16LE \
776  || (x)==AV_PIX_FMT_BAYER_RGGB16BE \
777  || (x)==AV_PIX_FMT_BAYER_GBRG8 \
778  || (x)==AV_PIX_FMT_BAYER_GBRG16LE \
779  || (x)==AV_PIX_FMT_BAYER_GBRG16BE \
780  || (x)==AV_PIX_FMT_BAYER_GRBG8 \
781  || (x)==AV_PIX_FMT_BAYER_GRBG16LE \
782  || (x)==AV_PIX_FMT_BAYER_GRBG16BE \
783  )
784 
785 #define isAnyRGB(x) \
786  ( \
787  isBayer(x) || \
788  isRGBinInt(x) || \
789  isBGRinInt(x) || \
790  isRGB(x) \
791  )
792 
794 {
795  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
796  av_assert0(desc);
797  if (pix_fmt == AV_PIX_FMT_PAL8)
798  return 1;
799  return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
800 }
801 
802 #if 1
803 #define isPacked(x) ( \
804  (x)==AV_PIX_FMT_PAL8 \
805  || (x)==AV_PIX_FMT_YUYV422 \
806  || (x)==AV_PIX_FMT_YVYU422 \
807  || (x)==AV_PIX_FMT_UYVY422 \
808  || (x)==AV_PIX_FMT_YA8 \
809  || (x)==AV_PIX_FMT_YA16LE \
810  || (x)==AV_PIX_FMT_YA16BE \
811  || (x)==AV_PIX_FMT_AYUV64LE \
812  || (x)==AV_PIX_FMT_AYUV64BE \
813  || isRGBinInt(x) \
814  || isBGRinInt(x) \
815  )
816 #else
818 {
819  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
820  av_assert0(desc);
821  return ((desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
822  pix_fmt == AV_PIX_FMT_PAL8);
823 }
824 
825 #endif
827 {
828  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
829  av_assert0(desc);
830  return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
831 }
832 
834 {
835  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
836  av_assert0(desc);
838 }
839 
841 {
842  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
843  av_assert0(desc);
844  return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
846 }
847 
849 {
850  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
851  av_assert0(desc);
852  return (desc->flags & AV_PIX_FMT_FLAG_PAL) || (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL);
853 }
854 
855 extern const uint64_t ff_dither4[2];
856 extern const uint64_t ff_dither8[2];
857 
858 extern const uint8_t ff_dither_2x2_4[3][8];
859 extern const uint8_t ff_dither_2x2_8[3][8];
860 extern const uint8_t ff_dither_4x4_16[5][8];
861 extern const uint8_t ff_dither_8x8_32[9][8];
862 extern const uint8_t ff_dither_8x8_73[9][8];
863 extern const uint8_t ff_dither_8x8_128[9][8];
864 extern const uint8_t ff_dither_8x8_220[9][8];
865 
866 extern const int32_t ff_yuv2rgb_coeffs[8][4];
867 
868 extern const AVClass sws_context_class;
869 
870 /**
871  * Set c->swscale to an unscaled converter if one exists for the specific
872  * source and destination formats, bit depths, flags, etc.
873  */
877 
878 /**
879  * Return function pointer to fastest main scaler path function depending
880  * on architecture and available optimizations.
881  */
883 
895 
896 void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
897  const uint8_t *src, int srcW, int xInc);
898 void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
899  int dstWidth, const uint8_t *src1,
900  const uint8_t *src2, int srcW, int xInc);
901 int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode,
902  int16_t *filter, int32_t *filterPos,
903  int numSplits);
904 void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
905  int dstWidth, const uint8_t *src,
906  int srcW, int xInc);
907 void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
908  int dstWidth, const uint8_t *src1,
909  const uint8_t *src2, int srcW, int xInc);
910 
911 /**
912  * Allocate and return an SwsContext.
913  * This is like sws_getContext() but does not perform the init step, allowing
914  * the user to set additional AVOptions.
915  *
916  * @see sws_getContext()
917  */
919  int dstW, int dstH, enum AVPixelFormat dstFormat,
920  int flags, const double *param);
921 
923  int srcStride[], int srcSliceY, int srcSliceH,
924  uint8_t *dst[], int dstStride[]);
925 
926 static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
927  int alpha, int bits, const int big_endian)
928 {
929  int i, j;
930  uint8_t *ptr = plane + stride * y;
931  int v = alpha ? 0xFFFF>>(15-bits) : (1<<bits);
932  for (i = 0; i < height; i++) {
933 #define FILL(wfunc) \
934  for (j = 0; j < width; j++) {\
935  wfunc(ptr+2*j, v);\
936  }
937  if (big_endian) {
938  FILL(AV_WB16);
939  } else {
940  FILL(AV_WL16);
941  }
942  ptr += stride;
943  }
944 }
945 
946 #define MAX_SLICE_PLANES 4
947 
948 /// Slice plane
949 typedef struct SwsPlane
950 {
951  int available_lines; ///< max number of lines that can be hold by this plane
952  int sliceY; ///< index of first line
953  int sliceH; ///< number of lines
954  uint8_t **line; ///< line buffer
955  uint8_t **tmp; ///< Tmp line buffer used by mmx code
956 } SwsPlane;
957 
958 /**
959  * Struct which defines a slice of an image to be scaled or a output for
960  * a scaled slice.
961  * A slice can also be used as intermediate ring buffer for scaling steps.
962  */
963 typedef struct SwsSlice
964 {
965  int width; ///< Slice line width
966  int h_chr_sub_sample; ///< horizontal chroma subsampling factor
967  int v_chr_sub_sample; ///< vertical chroma subsampling factor
968  int is_ring; ///< flag to identify if this slice is a ring buffer
969  int should_free_lines; ///< flag to identify if there are dynamic allocated lines
970  enum AVPixelFormat fmt; ///< planes pixel format
971  SwsPlane plane[MAX_SLICE_PLANES]; ///< color planes
972 } SwsSlice;
973 
974 /**
975  * Struct which holds all necessary data for processing a slice.
976  * A processing step can be a color conversion or horizontal/vertical scaling.
977  */
978 typedef struct SwsFilterDescriptor
979 {
980  SwsSlice *src; ///< Source slice
981  SwsSlice *dst; ///< Output slice
982 
983  int alpha; ///< Flag for processing alpha channel
984  void *instance; ///< Filter instance data
985 
986  /// Function for processing input slice sliceH lines starting from line sliceY
987  int (*process)(SwsContext *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH);
989 
990 /// Color conversion instance data
991 typedef struct ColorContext
992 {
993  uint32_t *pal;
994 } ColorContext;
995 
996 /// Scaler instance data
997 typedef struct FilterContext
998 {
999  uint16_t *filter;
1002  int xInc;
1003 } FilterContext;
1004 
1005 typedef struct VScalerContext
1006 {
1007  uint16_t *filter[2];
1010  int isMMX;
1011  void *pfn;
1012 } VScalerContext;
1013 
1014 // warp input lines in the form (src + width*i + j) to slice format (line[i][j])
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);
1016 
1017 // Initialize scaler filter descriptor chain
1018 int ff_init_filters(SwsContext *c);
1019 
1020 // Free all filter data
1021 int ff_free_filters(SwsContext *c);
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 lum pixel format conversion descriptor
1032 int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal);
1033 
1034 /// initializes lum horizontal scaling descriptor
1035 int ff_init_desc_hscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1036 
1037 /// initializes chr pixel format conversion descriptor
1038 int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice * src, SwsSlice *dst, uint32_t *pal);
1039 
1040 /// initializes chr horizontal scaling descriptor
1041 int ff_init_desc_chscale(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint16_t *filter, int * filter_pos, int filter_size, int xInc);
1042 
1044 
1045 /// initializes vertical scaling descriptors
1047 
1048 /// setup vertical scaler functions
1049 void ff_init_vscale_pfn(SwsContext *c, yuv2planar1_fn yuv2plane1, yuv2planarX_fn yuv2planeX,
1050  yuv2interleavedX_fn yuv2nv12cX, yuv2packed1_fn yuv2packed1, yuv2packed2_fn yuv2packed2,
1051  yuv2packedX_fn yuv2packedX, yuv2anyX_fn yuv2anyX, int use_mmx);
1052 
1053 //number of extra lines to process
1054 #define MAX_LINES_AHEAD 4
1055 
1056 // enable use of refactored scaler code
1057 #define NEW_FILTER
1058 
1059 #endif /* SWSCALE_SWSCALE_INTERNAL_H */
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:115
uint64_t vrCoeff
int plane
Definition: avisynth_c.h:291
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:2060
int16_t ** alpPixBuf
Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
const uint64_t ff_dither8[2]
int chrBufIndex
Index in ring buffer of the last scaled horizontal chroma line from source.
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)
float v
const char * s
Definition: avisynth_c.h:631
static enum AVPixelFormat pix_fmt
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2129
int chrSrcH
Height of source chroma planes.
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
uint64_t y_temp
#define YUVRGB_TABLE_HEADROOM
uint8_t * chrMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
uint64_t v_temp
uint8_t * lumMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
uint32_t pal_rgb[256]
int16_t * rgbgamma
SwsAlphaBlend alphablend
int vChrDrop
Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user...
int h_chr_sub_sample
horizontal chroma subsampling factor
int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
Definition: yuv2rgb.c:751
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)
Struct which holds all necessary data for processing a slice.
int16_t * rgbgammainv
const uint8_t ff_dither_8x8_73[9][8]
Definition: output.c:71
uint8_t * table_bU[256+2 *YUVRGB_TABLE_HEADROOM]
int dstFormatBpp
Number of bits per pixel of the destination pixel format.
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
uint64_t redDither
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
external API header
int16_t * xyzgammainv
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
uint16_t * filter[2]
void ff_get_unscaled_swscale_arm(SwsContext *c)
const uint8_t * lumDither8
swscale version macros
int dstY
Last destination vertical line output from last slice.
uint64_t blueDither
uint16_t dither16[8]
void ff_sws_init_input_funcs(SwsContext *c)
uint64_t ubCoeff
int srcH
Height of source luma/alpha planes.
void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
const int32_t ff_yuv2rgb_coeffs[8][4]
Definition: yuv2rgb.c:38
int chrDstVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination i...
void(* yuv2interleavedX_fn)(struct SwsContext *c, 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 ...
ptrdiff_t uv_off
offset (in pixels) between u and v planes
uint8_t bits
Definition: crc.c:295
const uint8_t ff_dither_8x8_128[9][8]
Definition: swscale.c:39
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:100
uint8_t
void(* readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width, int32_t *rgb2yuv)
#define av_cold
Definition: attributes.h:74
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:156
SwsAlphaBlend
uint8_t ** line
line buffer
8 bit with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:74
int alpha
Flag for processing alpha channel.
int vChrFilterSize
Vertical filter size for chroma pixels.
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...
int ff_init_desc_no_chr(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst)
Definition: hscale.c:266
int v_chr_sub_sample
vertical chroma subsampling factor
int16_t ** lumPixBuf
Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
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.
int cascaded_tmpStride[4]
SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
Definition: yuv2rgb.c:72
SwsSlice * dst
Output slice.
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
int16_t rgb2xyz_matrix[3][4]
uint64_t yOffset
int(* process)(SwsContext *c, struct SwsFilterDescriptor *desc, int sliceY, int sliceH)
Function for processing input slice sliceH lines starting from line sliceY.
enum AVPixelFormat dstFormat
Destination pixel format.
uint32_t dither32[8]
uint8_t * table_gU[256+2 *YUVRGB_TABLE_HEADROOM]
uint16_t * filter
uint16_t * inv_gamma
#define AV_WB16(p, v)
Definition: intreadwrite.h:405
int chrSrcHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source imag...
static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
yuv2packedX_fn yuv2packedX
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:221
uint64_t vRounder
void(* lumConvertRange)(int16_t *dst, int width)
Color range conversion function for luma plane if needed.
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
int dstH
Height of destination luma/alpha planes.
int * dither_error[4]
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...
yuv2anyX_fn yuv2anyX
uint16_t depth_minus1
Number of bits in the component minus 1.
Definition: pixdesc.h:57
av_cold void ff_sws_init_range_convert(SwsContext *c)
Definition: swscale.c:820
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:99
const uint64_t ff_dither4[2]
int16_t ** chrVPixBuf
Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
uint64_t u_temp
int32_t * hChrFilterPos
Array of horizontal filter starting positions for each dst[i] for chroma planes.
int hLumFilterSize
Horizontal filter size for luma/alpha pixels.
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:131
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:129
int ff_init_filters(SwsContext *c)
Definition: slice.c:211
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
int ff_init_vscale(SwsContext *c, SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst)
initializes vertical scaling descriptors
Definition: vscale.c:177
static const uint8_t dither[8][8]
Definition: vf_fspp.c:57
int ff_rotate_slice(SwsSlice *s, int lum, int chr)
Definition: slice.c:119
yuv2packed1_fn yuv2packed1
simple assert() macros that are a bit more flexible than ISO C assert().
const uint8_t ff_dither_2x2_4[3][8]
Definition: output.c:39
Slice plane.
uint64_t ugCoeff
int vChrBufSize
Number of vertical chroma lines allocated in the ring buffer.
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
int chrDstW
Width of destination chroma planes.
const uint8_t ff_dither_4x4_16[5][8]
Definition: output.c:51
uint8_t * cascaded1_tmp[4]
#define MAX_SLICE_PLANES
SwsPlane plane[MAX_SLICE_PLANES]
color planes
void(* chrConvertRange)(int16_t *dst1, int16_t *dst2, int width)
Color range conversion function for chroma planes if needed.
int32_t alpMmxFilter[4 *MAX_FILTER_SIZE]
int32_t * hLumFilterPos
Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
int hChrFilterSize
Horizontal filter size for chroma pixels.
int sliceH
number of lines
int16_t * xyzgamma
int dstRange
0 = MPG YUV range, 1 = JPG YUV range (destination image).
void ff_sws_init_swscale_ppc(SwsContext *c)
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:71
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 (...
ptrdiff_t uv_offx2
offset (in bytes) between u and v planes
static double lum(void *priv, double x, double y, int plane)
Definition: vf_fftfilt.c:74
float y
#define CSHIFT
Definition: audiogen.c:72
uint8_t * formatConvBuffer
static av_always_inline int is9_OR_10BPS(enum AVPixelFormat pix_fmt)
yuv2planar1_fn yuv2plane1
int vLumBufSize
Number of vertical luma/alpha lines allocated in the ring buffer.
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
int16_t ** chrUPixBuf
Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
yuv2interleavedX_fn yuv2nv12cX
uint64_t vgCoeff
uint64_t uOffset
#define AV_PIX_FMT_FLAG_PSEUDOPAL
The pixel format is "pseudo-paletted".
Definition: pixdesc.h:141
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)
Definition: slice.c:147
int32_t
void(* hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
int table_gV[256+2 *YUVRGB_TABLE_HEADROOM]
int available_lines
max number of lines that can be hold by this plane
SwsDither
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.
struct SwsFilterDescriptor * desc
int ff_init_desc_fmt_convert(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint32_t *pal)
initializes lum pixel format conversion descriptor
Definition: hscale.c:112
uint8_t * table_rV[256+2 *YUVRGB_TABLE_HEADROOM]
const uint8_t ff_dither_8x8_220[9][8]
Definition: output.c:84
double gamma_value
int srcColorspaceTable[4]
int dstW
Width of destination luma/alpha planes.
uint8_t * cascaded_tmp[4]
int sliceDir
Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
int cascaded1_tmpStride[4]
int needs_hcscale
Set if there are chroma planes to be converted.
int32_t * vLumFilterPos
Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
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:235
int should_free_lines
flag to identify if there are dynamic allocated lines
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
int32_t lumMmxFilter[4 *MAX_FILTER_SIZE]
#define src1
Definition: h264pred.c:139
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
Definition: swscale.c:878
int is_ring
flag to identify if this slice is a ring buffer
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:1804
AVS_Value src
Definition: avisynth_c.h:482
Color conversion instance data.
int dstColorspaceTable[4]
int width
Slice line width.
const AVClass * av_class
info on struct for av_log
int16_t xyz2rgb_matrix[3][4]
static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
uint8_t flags
Definition: pixdesc.h:90
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
yuv2planarX_fn yuv2planeX
int chrDstH
Height of destination chroma planes.
Struct which defines a slice of an image to be scaled or a output for a scaled slice.
struct SwsSlice * slice
static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
int lumMmxextFilterCodeSize
Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes...
Describe the class of an AVClass context structure.
Definition: log.h:67
int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
Definition: yuv2rgb.c:656
int chrMmxextFilterCodeSize
Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
static av_always_inline int isPlanarYUV(enum AVPixelFormat pix_fmt)
static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
int16_t * vChrFilter
Array of vertical filter coefficients for chroma planes.
void * instance
Filter instance data.
void ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:407
int16_t * hLumFilter
Array of horizontal filter coefficients for luma/alpha planes.
static void fillPlane16(uint8_t *plane, int stride, int width, int height, int y, int alpha, int bits, const int big_endian)
const uint8_t * chrDither8
static int flags
Definition: cpu.c:47
void ff_get_unscaled_swscale_ppc(SwsContext *c)
int lumBufIndex
Index in ring buffer of the last scaled horizontal luma/alpha line from source.
void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth, const uint8_t *src, int srcW, int xInc)
SwsDither dither
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
yuv2packed2_fn yuv2packed2
void(* readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv)
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
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...
double param[2]
Input parameters for scaling algorithms that need them.
common internal and external API header
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...
static double c[64]
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...
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
enum AVPixelFormat srcFormat
Source pixel format.
int32_t chrMmxFilter[4 *MAX_FILTER_SIZE]
Scaler instance data.
enum AVPixelFormat fmt
planes pixel format
uint32_t * pal
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...
struct SwsContext * cascaded_context[3]
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:111
uint64_t greenDither
uint16_t * gamma
SwsFunc swscale
Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be fre...
uint8_t ** tmp
Tmp line buffer used by mmx code.
#define MAX_FILTER_SIZE
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.
void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
pixel format definitions
void ff_updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, int lastInLumBuf, int lastInChrBuf)
const AVClass sws_context_class
Definition: options.c:89
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.
int srcFormatBpp
Number of bits per pixel of the source pixel format.
uint64_t yCoeff
int ff_init_desc_cfmt_convert(SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst, uint32_t *pal)
initializes chr pixel format conversion descriptor
Definition: hscale.c:220
const uint8_t ff_dither_8x8_32[9][8]
Definition: output.c:59
static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
int32_t input_rgb2yuv_table[16+40 *4]
int16_t * vLumFilter
Array of vertical filter coefficients for luma/alpha planes.
const uint8_t ff_dither_2x2_8[3][8]
Definition: output.c:45
#define av_always_inline
Definition: attributes.h:37
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)
static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
SwsSlice * src
Source slice.
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
#define stride
int sliceY
index of first line
int chrDstHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination...
int chrSrcW
Width of source chroma planes.
#define isPacked(x)
void ff_get_unscaled_swscale(SwsContext *c)
Set c->swscale to an unscaled converter if one exists for the specific source and destination formats...
int ff_free_filters(SwsContext *c)
Definition: slice.c:314
int srcW
Width of source luma/alpha planes.
int chrSrcVSubSample
Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image...
int flags
Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
#define FILL(wfunc)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
uint32_t pal_yuv[256]
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:127
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...
static av_always_inline uint32_t rgb2yuv(const uint32_t *r2y, uint32_t c)
Definition: vf_hqx.c:58
uint64_t vOffset
SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)
static int width