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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 512
43 #define YUVRGB_TABLE_LUMA_HEADROOM 512
44 
45 #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE
46 
47 #define DITHER1XBPP
48 
49 #if HAVE_BIGENDIAN
50 #define ALT32_CORR (-1)
51 #else
52 #define ALT32_CORR 1
53 #endif
54 
55 #if ARCH_X86_64
56 # define APCK_PTR2 8
57 # define APCK_COEF 16
58 # define APCK_SIZE 24
59 #else
60 # define APCK_PTR2 4
61 # define APCK_COEF 8
62 # define APCK_SIZE 16
63 #endif
64 
65 #define RETCODE_USE_CASCADE -12345
66 
67 struct SwsContext;
68 
69 typedef enum SwsDither {
77 } SwsDither;
78 
79 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
80  int srcStride[], int srcSliceY, int srcSliceH,
81  uint8_t *dst[], int dstStride[]);
82 
83 /**
84  * Write one line of horizontally scaled data to planar output
85  * without any additional vertical scaling (or point-scaling).
86  *
87  * @param src scaled source data, 15bit for 8-10bit output,
88  * 19-bit for 16bit output (in int32_t)
89  * @param dest pointer to the output plane. For >8bit
90  * output, this is in uint16_t
91  * @param dstW width of destination in pixels
92  * @param dither ordered dither array of type int16_t and size 8
93  * @param offset Dither offset
94  */
95 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
96  const uint8_t *dither, int offset);
97 
98 /**
99  * Write one line of horizontally scaled data to planar output
100  * with multi-point vertical scaling between input pixels.
101  *
102  * @param filter vertical luma/alpha scaling coefficients, 12bit [0,4096]
103  * @param src scaled luma (Y) or alpha (A) source data, 15bit for 8-10bit output,
104  * 19-bit for 16bit output (in int32_t)
105  * @param filterSize number of vertical input lines to scale
106  * @param dest pointer to output plane. For >8bit
107  * output, this is in uint16_t
108  * @param dstW width of destination pixels
109  * @param offset Dither offset
110  */
111 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
112  const int16_t **src, uint8_t *dest, int dstW,
113  const uint8_t *dither, int offset);
114 
115 /**
116  * Write one line of horizontally scaled chroma to interleaved output
117  * with multi-point vertical scaling between input pixels.
118  *
119  * @param c SWS scaling context
120  * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
121  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
122  * 19-bit for 16bit output (in int32_t)
123  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
124  * 19-bit for 16bit output (in int32_t)
125  * @param chrFilterSize number of vertical chroma input lines to scale
126  * @param dest pointer to the output plane. For >8bit
127  * output, this is in uint16_t
128  * @param dstW width of chroma planes
129  */
131  const int16_t *chrFilter,
132  int chrFilterSize,
133  const int16_t **chrUSrc,
134  const int16_t **chrVSrc,
135  uint8_t *dest, int dstW);
136 
137 /**
138  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
139  * output without any additional vertical scaling (or point-scaling). Note
140  * that this function may do chroma scaling, see the "uvalpha" argument.
141  *
142  * @param c SWS scaling context
143  * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
144  * 19-bit for 16bit output (in int32_t)
145  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
146  * 19-bit for 16bit output (in int32_t)
147  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
148  * 19-bit for 16bit output (in int32_t)
149  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
150  * 19-bit for 16bit output (in int32_t)
151  * @param dest pointer to the output plane. For 16bit output, this is
152  * uint16_t
153  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
154  * to write into dest[]
155  * @param uvalpha chroma scaling coefficient for the second line of chroma
156  * pixels, either 2048 or 0. If 0, one chroma input is used
157  * for 2 output pixels (or if the SWS_FLAG_FULL_CHR_INT flag
158  * is set, it generates 1 output pixel). If 2048, two chroma
159  * input pixels should be averaged for 2 output pixels (this
160  * only happens if SWS_FLAG_FULL_CHR_INT is not set)
161  * @param y vertical line number for this output. This does not need
162  * to be used to calculate the offset in the destination,
163  * but can be used to generate comfort noise using dithering
164  * for some output formats.
165  */
166 typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
167  const int16_t *chrUSrc[2],
168  const int16_t *chrVSrc[2],
169  const int16_t *alpSrc, uint8_t *dest,
170  int dstW, int uvalpha, int y);
171 /**
172  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
173  * output by doing bilinear scaling between two input lines.
174  *
175  * @param c SWS scaling context
176  * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
177  * 19-bit for 16bit output (in int32_t)
178  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
179  * 19-bit for 16bit output (in int32_t)
180  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
181  * 19-bit for 16bit output (in int32_t)
182  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
183  * 19-bit for 16bit output (in int32_t)
184  * @param dest pointer to the output plane. For 16bit output, this is
185  * uint16_t
186  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
187  * to write into dest[]
188  * @param yalpha luma/alpha scaling coefficients for the second input line.
189  * The first line's coefficients can be calculated by using
190  * 4096 - yalpha
191  * @param uvalpha chroma scaling coefficient for the second input line. The
192  * first line's coefficients can be calculated by using
193  * 4096 - uvalpha
194  * @param y vertical line number for this output. This does not need
195  * to be used to calculate the offset in the destination,
196  * but can be used to generate comfort noise using dithering
197  * for some output formats.
198  */
199 typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
200  const int16_t *chrUSrc[2],
201  const int16_t *chrVSrc[2],
202  const int16_t *alpSrc[2],
203  uint8_t *dest,
204  int dstW, int yalpha, int uvalpha, int y);
205 /**
206  * Write one line of horizontally scaled Y/U/V/A to packed-pixel YUV/RGB
207  * output by doing multi-point vertical scaling between input pixels.
208  *
209  * @param c SWS scaling context
210  * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
211  * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
212  * 19-bit for 16bit output (in int32_t)
213  * @param lumFilterSize number of vertical luma/alpha input lines to scale
214  * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
215  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
216  * 19-bit for 16bit output (in int32_t)
217  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
218  * 19-bit for 16bit output (in int32_t)
219  * @param chrFilterSize number of vertical chroma input lines to scale
220  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
221  * 19-bit for 16bit output (in int32_t)
222  * @param dest pointer to the output plane. For 16bit output, this is
223  * uint16_t
224  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
225  * to write into dest[]
226  * @param y vertical line number for this output. This does not need
227  * to be used to calculate the offset in the destination,
228  * but can be used to generate comfort noise using dithering
229  * or some output formats.
230  */
231 typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
232  const int16_t **lumSrc, int lumFilterSize,
233  const int16_t *chrFilter,
234  const int16_t **chrUSrc,
235  const int16_t **chrVSrc, int chrFilterSize,
236  const int16_t **alpSrc, uint8_t *dest,
237  int dstW, int y);
238 
239 /**
240  * Write one line of horizontally scaled Y/U/V/A to YUV/RGB
241  * output by doing multi-point vertical scaling between input pixels.
242  *
243  * @param c SWS scaling context
244  * @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
245  * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
246  * 19-bit for 16bit output (in int32_t)
247  * @param lumFilterSize number of vertical luma/alpha input lines to scale
248  * @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
249  * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
250  * 19-bit for 16bit output (in int32_t)
251  * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
252  * 19-bit for 16bit output (in int32_t)
253  * @param chrFilterSize number of vertical chroma input lines to scale
254  * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
255  * 19-bit for 16bit output (in int32_t)
256  * @param dest pointer to the output planes. For 16bit output, this is
257  * uint16_t
258  * @param dstW width of lumSrc and alpSrc in pixels, number of pixels
259  * to write into dest[]
260  * @param y vertical line number for this output. This does not need
261  * to be used to calculate the offset in the destination,
262  * but can be used to generate comfort noise using dithering
263  * or some output formats.
264  */
265 typedef void (*yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter,
266  const int16_t **lumSrc, int lumFilterSize,
267  const int16_t *chrFilter,
268  const int16_t **chrUSrc,
269  const int16_t **chrVSrc, int chrFilterSize,
270  const int16_t **alpSrc, uint8_t **dest,
271  int dstW, int y);
272 
273 /* This struct should be aligned on at least a 32-byte boundary. */
274 typedef struct SwsContext {
275  /**
276  * info on struct for av_log
277  */
279 
280  /**
281  * Note that src, dst, srcStride, dstStride will be copied in the
282  * sws_scale() wrapper so they can be freely modified here.
283  */
285  int srcW; ///< Width of source luma/alpha planes.
286  int srcH; ///< Height of source luma/alpha planes.
287  int dstH; ///< Height of destination luma/alpha planes.
288  int chrSrcW; ///< Width of source chroma planes.
289  int chrSrcH; ///< Height of source chroma planes.
290  int chrDstW; ///< Width of destination chroma planes.
291  int chrDstH; ///< Height of destination chroma planes.
294  enum AVPixelFormat dstFormat; ///< Destination pixel format.
295  enum AVPixelFormat srcFormat; ///< Source pixel format.
296  int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
297  int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
299  int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
300  int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
301  int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
302  int chrDstVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in destination image.
303  int vChrDrop; ///< Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user.
304  int sliceDir; ///< Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
305  double param[2]; ///< Input parameters for scaling algorithms that need them.
306 
307  /* The cascaded_* fields allow spliting a scaler task into multiple
308  * sequential steps, this is for example used to limit the maximum
309  * downscaling factor that needs to be supported in one scaler.
310  */
314 
315  uint32_t pal_yuv[256];
316  uint32_t pal_rgb[256];
317 
318  /**
319  * @name Scaled horizontal lines ring buffer.
320  * The horizontal scaler keeps just enough scaled lines in a ring buffer
321  * so they may be passed to the vertical scaler. The pointers to the
322  * allocated buffers for each line are duplicated in sequence in the ring
323  * buffer to simplify indexing and avoid wrapping around between lines
324  * inside the vertical scaler code. The wrapping is done before the
325  * vertical scaler is called.
326  */
327  //@{
328  int16_t **lumPixBuf; ///< Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
329  int16_t **chrUPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
330  int16_t **chrVPixBuf; ///< Ring buffer for scaled horizontal chroma plane lines to be fed to the vertical scaler.
331  int16_t **alpPixBuf; ///< Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
332  int vLumBufSize; ///< Number of vertical luma/alpha lines allocated in the ring buffer.
333  int vChrBufSize; ///< Number of vertical chroma lines allocated in the ring buffer.
334  int lastInLumBuf; ///< Last scaled horizontal luma/alpha line from source in the ring buffer.
335  int lastInChrBuf; ///< Last scaled horizontal chroma line from source in the ring buffer.
336  int lumBufIndex; ///< Index in ring buffer of the last scaled horizontal luma/alpha line from source.
337  int chrBufIndex; ///< Index in ring buffer of the last scaled horizontal chroma line from source.
338  //@}
339 
341 
342  /**
343  * @name Horizontal and vertical filters.
344  * To better understand the following fields, here is a pseudo-code of
345  * their usage in filtering a horizontal line:
346  * @code
347  * for (i = 0; i < width; i++) {
348  * dst[i] = 0;
349  * for (j = 0; j < filterSize; j++)
350  * dst[i] += src[ filterPos[i] + j ] * filter[ filterSize * i + j ];
351  * dst[i] >>= FRAC_BITS; // The actual implementation is fixed-point.
352  * }
353  * @endcode
354  */
355  //@{
356  int16_t *hLumFilter; ///< Array of horizontal filter coefficients for luma/alpha planes.
357  int16_t *hChrFilter; ///< Array of horizontal filter coefficients for chroma planes.
358  int16_t *vLumFilter; ///< Array of vertical filter coefficients for luma/alpha planes.
359  int16_t *vChrFilter; ///< Array of vertical filter coefficients for chroma planes.
360  int32_t *hLumFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for luma/alpha planes.
361  int32_t *hChrFilterPos; ///< Array of horizontal filter starting positions for each dst[i] for chroma planes.
362  int32_t *vLumFilterPos; ///< Array of vertical filter starting positions for each dst[i] for luma/alpha planes.
363  int32_t *vChrFilterPos; ///< Array of vertical filter starting positions for each dst[i] for chroma planes.
364  int hLumFilterSize; ///< Horizontal filter size for luma/alpha pixels.
365  int hChrFilterSize; ///< Horizontal filter size for chroma pixels.
366  int vLumFilterSize; ///< Vertical filter size for luma/alpha pixels.
367  int vChrFilterSize; ///< Vertical filter size for chroma pixels.
368  //@}
369 
370  int lumMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for luma/alpha planes.
371  int chrMmxextFilterCodeSize; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code size for chroma planes.
372  uint8_t *lumMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
373  uint8_t *chrMmxextFilterCode; ///< Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
374 
376 
377  int dstY; ///< Last destination vertical line output from last slice.
378  int flags; ///< Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
379  void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
380  // alignment ensures the offset can be added in a single
381  // instruction on e.g. ARM
386  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
387 #define RY_IDX 0
388 #define GY_IDX 1
389 #define BY_IDX 2
390 #define RU_IDX 3
391 #define GU_IDX 4
392 #define BU_IDX 5
393 #define RV_IDX 6
394 #define GV_IDX 7
395 #define BV_IDX 8
396 #define RGB2YUV_SHIFT 15
397 
398  int *dither_error[4];
399 
400  //Colorspace stuff
401  int contrast, brightness, saturation; // for sws_getColorspaceDetails
404  int srcRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (source image).
405  int dstRange; ///< 0 = MPG YUV range, 1 = JPG YUV range (destination image).
408  int srcXYZ;
409  int dstXYZ;
420 
421 #define RED_DITHER "0*8"
422 #define GREEN_DITHER "1*8"
423 #define BLUE_DITHER "2*8"
424 #define Y_COEFF "3*8"
425 #define VR_COEFF "4*8"
426 #define UB_COEFF "5*8"
427 #define VG_COEFF "6*8"
428 #define UG_COEFF "7*8"
429 #define Y_OFFSET "8*8"
430 #define U_OFFSET "9*8"
431 #define V_OFFSET "10*8"
432 #define LUM_MMX_FILTER_OFFSET "11*8"
433 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)
434 #define DSTW_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2"
435 #define ESP_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+8"
436 #define VROUNDER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+16"
437 #define U_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+24"
438 #define V_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+32"
439 #define Y_TEMP "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+40"
440 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*2+48"
441 #define UV_OFF_PX "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+48"
442 #define UV_OFF_BYTE "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+56"
443 #define DITHER16 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+64"
444 #define DITHER32 "11*8+4*4*"AV_STRINGIFY(MAX_FILTER_SIZE)"*3+80"
445 #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
446 
447  DECLARE_ALIGNED(8, uint64_t, redDither);
450 
451  DECLARE_ALIGNED(8, uint64_t, yCoeff);
452  DECLARE_ALIGNED(8, uint64_t, vrCoeff);
453  DECLARE_ALIGNED(8, uint64_t, ubCoeff);
454  DECLARE_ALIGNED(8, uint64_t, vgCoeff);
455  DECLARE_ALIGNED(8, uint64_t, ugCoeff);
456  DECLARE_ALIGNED(8, uint64_t, yOffset);
457  DECLARE_ALIGNED(8, uint64_t, uOffset);
458  DECLARE_ALIGNED(8, uint64_t, vOffset);
461  int dstW; ///< Width of destination luma/alpha planes.
462  DECLARE_ALIGNED(8, uint64_t, esp);
463  DECLARE_ALIGNED(8, uint64_t, vRounder);
464  DECLARE_ALIGNED(8, uint64_t, u_temp);
465  DECLARE_ALIGNED(8, uint64_t, v_temp);
466  DECLARE_ALIGNED(8, uint64_t, y_temp);
468  // alignment of these values is not necessary, but merely here
469  // to maintain the same offset across x8632 and x86-64. Once we
470  // use proper offset macros in the asm, they can be removed.
471  DECLARE_ALIGNED(8, ptrdiff_t, uv_off); ///< offset (in pixels) between u and v planes
472  DECLARE_ALIGNED(8, ptrdiff_t, uv_offx2); ///< offset (in bytes) between u and v planes
473  DECLARE_ALIGNED(8, uint16_t, dither16)[8];
474  DECLARE_ALIGNED(8, uint32_t, dither32)[8];
475 
477 
478 #if HAVE_ALTIVEC
479  vector signed short CY;
480  vector signed short CRV;
481  vector signed short CBU;
482  vector signed short CGU;
483  vector signed short CGV;
484  vector signed short OY;
485  vector unsigned short CSHIFT;
486  vector signed short *vYCoeffsBank, *vCCoeffsBank;
487 #endif
488 
490 
491 /* pre defined color-spaces gamma */
492 #define XYZ_GAMMA (2.6f)
493 #define RGB_GAMMA (2.2f)
494  int16_t *xyzgamma;
495  int16_t *rgbgamma;
496  int16_t *xyzgammainv;
497  int16_t *rgbgammainv;
498  int16_t xyz2rgb_matrix[3][4];
499  int16_t rgb2xyz_matrix[3][4];
500 
501  /* function pointers for swscale() */
509 
510  /// Unscaled conversion of luma plane to YV12 for horizontal scaler.
511  void (*lumToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
512  int width, uint32_t *pal);
513  /// Unscaled conversion of alpha plane to YV12 for horizontal scaler.
514  void (*alpToYV12)(uint8_t *dst, const uint8_t *src, const uint8_t *src2, const uint8_t *src3,
515  int width, uint32_t *pal);
516  /// Unscaled conversion of chroma planes to YV12 for horizontal scaler.
517  void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
518  const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
519  int width, uint32_t *pal);
520 
521  /**
522  * Functions to read planar input, such as planar RGB, and convert
523  * internally to Y/UV/A.
524  */
525  /** @{ */
526  void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
527  void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
528  int width, int32_t *rgb2yuv);
529  void (*readAlpPlanar)(uint8_t *dst, const uint8_t *src[4], int width, int32_t *rgb2yuv);
530  /** @} */
531 
532  /**
533  * Scale one horizontal line of input data using a bilinear filter
534  * to produce one line of output data. Compared to SwsContext->hScale(),
535  * please take note of the following caveats when using these:
536  * - Scaling is done using only 7bit instead of 14bit coefficients.
537  * - You can use no more than 5 input pixels to produce 4 output
538  * pixels. Therefore, this filter should not be used for downscaling
539  * by more than ~20% in width (because that equals more than 5/4th
540  * downscaling and thus more than 5 pixels input per 4 pixels output).
541  * - In general, bilinear filters create artifacts during downscaling
542  * (even when <20%), because one output pixel will span more than one
543  * input pixel, and thus some pixels will need edges of both neighbor
544  * pixels to interpolate the output pixel. Since you can use at most
545  * two input pixels per output pixel in bilinear scaling, this is
546  * impossible and thus downscaling by any size will create artifacts.
547  * To enable this type of scaling, set SWS_FLAG_FAST_BILINEAR
548  * in SwsContext->flags.
549  */
550  /** @{ */
552  int16_t *dst, int dstWidth,
553  const uint8_t *src, int srcW, int xInc);
555  int16_t *dst1, int16_t *dst2, int dstWidth,
556  const uint8_t *src1, const uint8_t *src2,
557  int srcW, int xInc);
558  /** @} */
559 
560  /**
561  * Scale one horizontal line of input data using a filter over the input
562  * lines, to produce one (differently sized) line of output data.
563  *
564  * @param dst pointer to destination buffer for horizontally scaled
565  * data. If the number of bits per component of one
566  * destination pixel (SwsContext->dstBpc) is <= 10, data
567  * will be 15bpc in 16bits (int16_t) width. Else (i.e.
568  * SwsContext->dstBpc == 16), data will be 19bpc in
569  * 32bits (int32_t) width.
570  * @param dstW width of destination image
571  * @param src pointer to source data to be scaled. If the number of
572  * bits per component of a source pixel (SwsContext->srcBpc)
573  * is 8, this is 8bpc in 8bits (uint8_t) width. Else
574  * (i.e. SwsContext->dstBpc > 8), this is native depth
575  * in 16bits (uint16_t) width. In other words, for 9-bit
576  * YUV input, this is 9bpc, for 10-bit YUV input, this is
577  * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
578  * @param filter filter coefficients to be used per output pixel for
579  * scaling. This contains 14bpp filtering coefficients.
580  * Guaranteed to contain dstW * filterSize entries.
581  * @param filterPos position of the first input pixel to be used for
582  * each output pixel during scaling. Guaranteed to
583  * contain dstW entries.
584  * @param filterSize the number of input coefficients to be used (and
585  * thus the number of input pixels to be used) for
586  * creating a single output pixel. Is aligned to 4
587  * (and input coefficients thus padded with zeroes)
588  * to simplify creating SIMD code.
589  */
590  /** @{ */
591  void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
592  const uint8_t *src, const int16_t *filter,
593  const int32_t *filterPos, int filterSize);
594  void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
595  const uint8_t *src, const int16_t *filter,
596  const int32_t *filterPos, int filterSize);
597  /** @} */
598 
599  /// Color range conversion function for luma plane if needed.
600  void (*lumConvertRange)(int16_t *dst, int width);
601  /// Color range conversion function for chroma planes if needed.
602  void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
603 
604  int needs_hcscale; ///< Set if there are chroma planes to be converted.
605 
607 } SwsContext;
608 //FIXME check init (where 0)
609 
611 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
612  int fullRange, int brightness,
613  int contrast, int saturation);
614 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
615  int brightness, int contrast, int saturation);
616 
618  int lastInLumBuf, int lastInChrBuf);
619 
621 
624 
626 {
627  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
628  av_assert0(desc);
629  return desc->comp[0].depth_minus1 == 15;
630 }
631 
633 {
634  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
635  av_assert0(desc);
636  return desc->comp[0].depth_minus1 >= 8 && desc->comp[0].depth_minus1 <= 13;
637 }
638 
639 #define isNBPS(x) is9_OR_10BPS(x)
640 
642 {
643  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
644  av_assert0(desc);
645  return desc->flags & AV_PIX_FMT_FLAG_BE;
646 }
647 
649 {
650  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
651  av_assert0(desc);
652  return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
653 }
654 
656 {
657  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
658  av_assert0(desc);
659  return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
660 }
661 
663 {
664  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
665  av_assert0(desc);
666  return (desc->flags & AV_PIX_FMT_FLAG_RGB);
667 }
668 
669 #if 0 // FIXME
670 #define isGray(x) \
671  (!(av_pix_fmt_desc_get(x)->flags & AV_PIX_FMT_FLAG_PAL) && \
672  av_pix_fmt_desc_get(x)->nb_components <= 2)
673 #else
674 #define isGray(x) \
675  ((x) == AV_PIX_FMT_GRAY8 || \
676  (x) == AV_PIX_FMT_YA8 || \
677  (x) == AV_PIX_FMT_GRAY16BE || \
678  (x) == AV_PIX_FMT_GRAY16LE || \
679  (x) == AV_PIX_FMT_YA16BE || \
680  (x) == AV_PIX_FMT_YA16LE)
681 #endif
682 
683 #define isRGBinInt(x) \
684  ( \
685  (x) == AV_PIX_FMT_RGB48BE || \
686  (x) == AV_PIX_FMT_RGB48LE || \
687  (x) == AV_PIX_FMT_RGB32 || \
688  (x) == AV_PIX_FMT_RGB32_1 || \
689  (x) == AV_PIX_FMT_RGB24 || \
690  (x) == AV_PIX_FMT_RGB565BE || \
691  (x) == AV_PIX_FMT_RGB565LE || \
692  (x) == AV_PIX_FMT_RGB555BE || \
693  (x) == AV_PIX_FMT_RGB555LE || \
694  (x) == AV_PIX_FMT_RGB444BE || \
695  (x) == AV_PIX_FMT_RGB444LE || \
696  (x) == AV_PIX_FMT_RGB8 || \
697  (x) == AV_PIX_FMT_RGB4 || \
698  (x) == AV_PIX_FMT_RGB4_BYTE || \
699  (x) == AV_PIX_FMT_RGBA64BE || \
700  (x) == AV_PIX_FMT_RGBA64LE || \
701  (x) == AV_PIX_FMT_MONOBLACK || \
702  (x) == AV_PIX_FMT_MONOWHITE \
703  )
704 #define isBGRinInt(x) \
705  ( \
706  (x) == AV_PIX_FMT_BGR48BE || \
707  (x) == AV_PIX_FMT_BGR48LE || \
708  (x) == AV_PIX_FMT_BGR32 || \
709  (x) == AV_PIX_FMT_BGR32_1 || \
710  (x) == AV_PIX_FMT_BGR24 || \
711  (x) == AV_PIX_FMT_BGR565BE || \
712  (x) == AV_PIX_FMT_BGR565LE || \
713  (x) == AV_PIX_FMT_BGR555BE || \
714  (x) == AV_PIX_FMT_BGR555LE || \
715  (x) == AV_PIX_FMT_BGR444BE || \
716  (x) == AV_PIX_FMT_BGR444LE || \
717  (x) == AV_PIX_FMT_BGR8 || \
718  (x) == AV_PIX_FMT_BGR4 || \
719  (x) == AV_PIX_FMT_BGR4_BYTE || \
720  (x) == AV_PIX_FMT_BGRA64BE || \
721  (x) == AV_PIX_FMT_BGRA64LE || \
722  (x) == AV_PIX_FMT_MONOBLACK || \
723  (x) == AV_PIX_FMT_MONOWHITE \
724  )
725 
726 #define isRGBinBytes(x) ( \
727  (x) == AV_PIX_FMT_RGB48BE \
728  || (x) == AV_PIX_FMT_RGB48LE \
729  || (x) == AV_PIX_FMT_RGBA64BE \
730  || (x) == AV_PIX_FMT_RGBA64LE \
731  || (x) == AV_PIX_FMT_RGBA \
732  || (x) == AV_PIX_FMT_ARGB \
733  || (x) == AV_PIX_FMT_RGB24 \
734  )
735 #define isBGRinBytes(x) ( \
736  (x) == AV_PIX_FMT_BGR48BE \
737  || (x) == AV_PIX_FMT_BGR48LE \
738  || (x) == AV_PIX_FMT_BGRA64BE \
739  || (x) == AV_PIX_FMT_BGRA64LE \
740  || (x) == AV_PIX_FMT_BGRA \
741  || (x) == AV_PIX_FMT_ABGR \
742  || (x) == AV_PIX_FMT_BGR24 \
743  )
744 
745 #define isBayer(x) ( \
746  (x)==AV_PIX_FMT_BAYER_BGGR8 \
747  || (x)==AV_PIX_FMT_BAYER_BGGR16LE \
748  || (x)==AV_PIX_FMT_BAYER_BGGR16BE \
749  || (x)==AV_PIX_FMT_BAYER_RGGB8 \
750  || (x)==AV_PIX_FMT_BAYER_RGGB16LE \
751  || (x)==AV_PIX_FMT_BAYER_RGGB16BE \
752  || (x)==AV_PIX_FMT_BAYER_GBRG8 \
753  || (x)==AV_PIX_FMT_BAYER_GBRG16LE \
754  || (x)==AV_PIX_FMT_BAYER_GBRG16BE \
755  || (x)==AV_PIX_FMT_BAYER_GRBG8 \
756  || (x)==AV_PIX_FMT_BAYER_GRBG16LE \
757  || (x)==AV_PIX_FMT_BAYER_GRBG16BE \
758  )
759 
760 #define isAnyRGB(x) \
761  ( \
762  isBayer(x) || \
763  isRGBinInt(x) || \
764  isBGRinInt(x) || \
765  isRGB(x) \
766  )
767 
769 {
770  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
771  av_assert0(desc);
772  if (pix_fmt == AV_PIX_FMT_PAL8)
773  return 1;
774  return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
775 }
776 
777 #if 1
778 #define isPacked(x) ( \
779  (x)==AV_PIX_FMT_PAL8 \
780  || (x)==AV_PIX_FMT_YUYV422 \
781  || (x)==AV_PIX_FMT_YVYU422 \
782  || (x)==AV_PIX_FMT_UYVY422 \
783  || (x)==AV_PIX_FMT_YA8 \
784  || (x)==AV_PIX_FMT_YA16LE \
785  || (x)==AV_PIX_FMT_YA16BE \
786  || isRGBinInt(x) \
787  || isBGRinInt(x) \
788  )
789 #else
791 {
792  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
793  av_assert0(desc);
794  return ((desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
795  pix_fmt == AV_PIX_FMT_PAL8);
796 }
797 
798 #endif
800 {
801  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
802  av_assert0(desc);
803  return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
804 }
805 
807 {
808  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
809  av_assert0(desc);
811 }
812 
814 {
815  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
816  av_assert0(desc);
817  return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
819 }
820 
822 {
823  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
824  av_assert0(desc);
825  return (desc->flags & AV_PIX_FMT_FLAG_PAL) || (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL);
826 }
827 
828 extern const uint64_t ff_dither4[2];
829 extern const uint64_t ff_dither8[2];
830 
831 extern const uint8_t ff_dither_2x2_4[3][8];
832 extern const uint8_t ff_dither_2x2_8[3][8];
833 extern const uint8_t ff_dither_4x4_16[5][8];
834 extern const uint8_t ff_dither_8x8_32[9][8];
835 extern const uint8_t ff_dither_8x8_73[9][8];
836 extern const uint8_t ff_dither_8x8_128[9][8];
837 extern const uint8_t ff_dither_8x8_220[9][8];
838 
839 extern const int32_t ff_yuv2rgb_coeffs[8][4];
840 
841 extern const AVClass sws_context_class;
842 
843 /**
844  * Set c->swscale to an unscaled converter if one exists for the specific
845  * source and destination formats, bit depths, flags, etc.
846  */
850 
851 /**
852  * Return function pointer to fastest main scaler path function depending
853  * on architecture and available optimizations.
854  */
856 
868 
869 void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
870  const uint8_t *src, int srcW, int xInc);
871 void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
872  int dstWidth, const uint8_t *src1,
873  const uint8_t *src2, int srcW, int xInc);
874 int ff_init_hscaler_mmxext(int dstW, int xInc, uint8_t *filterCode,
875  int16_t *filter, int32_t *filterPos,
876  int numSplits);
877 void ff_hyscale_fast_mmxext(SwsContext *c, int16_t *dst,
878  int dstWidth, const uint8_t *src,
879  int srcW, int xInc);
880 void ff_hcscale_fast_mmxext(SwsContext *c, int16_t *dst1, int16_t *dst2,
881  int dstWidth, const uint8_t *src1,
882  const uint8_t *src2, int srcW, int xInc);
883 
884 static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
885  int alpha, int bits, const int big_endian)
886 {
887  int i, j;
888  uint8_t *ptr = plane + stride * y;
889  int v = alpha ? 0xFFFF>>(15-bits) : (1<<bits);
890  for (i = 0; i < height; i++) {
891 #define FILL(wfunc) \
892  for (j = 0; j < width; j++) {\
893  wfunc(ptr+2*j, v);\
894  }
895  if (big_endian) {
896  FILL(AV_WB16);
897  } else {
898  FILL(AV_WL16);
899  }
900  ptr += stride;
901  }
902 }
903 
904 #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
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:1857
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
static enum AVPixelFormat pix_fmt
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2029
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
int vChrDrop
Binary logarithm of extra vertical subsampling factor in source image chroma planes specified by user...
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)
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).
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]
struct SwsContext * cascaded_context[2]
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
8 bit with PIX_FMT_RGB32 palette
Definition: pixfmt.h:79
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...
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
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
int16_t rgb2xyz_matrix[3][4]
uint64_t yOffset
enum AVPixelFormat dstFormat
Destination pixel format.
uint32_t dither32[8]
uint8_t * table_gU[256+2 *YUVRGB_TABLE_HEADROOM]
#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
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:675
static double alpha(void *priv, double x, double y)
Definition: vf_geq.c:98
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
static const uint8_t dither[8][8]
Definition: vf_fspp.c:57
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
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
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.
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
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.
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
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]
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.
uint8_t * table_rV[256+2 *YUVRGB_TABLE_HEADROOM]
const uint8_t ff_dither_8x8_220[9][8]
Definition: output.c:84
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 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.
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
int32_t lumMmxFilter[4 *MAX_FILTER_SIZE]
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
Definition: swscale.c:733
AVS_Value src
Definition: avisynth_c.h:524
int dstColorspaceTable[4]
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
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
int chrDstH
Height of destination chroma planes.
static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
BYTE int const BYTE int int int height
Definition: avisynth_c.h:714
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:66
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 ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:383
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
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]
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...
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:111
uint64_t greenDither
SwsFunc swscale
Note that src, dst, srcStride, dstStride will be copied in the sws_scale() wrapper so they can be fre...
#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:82
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
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)
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
#define stride
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 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:66
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