Libav
swscale_internal.h
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; 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 "libavutil/avassert.h"
31 #include "libavutil/avutil.h"
32 #include "libavutil/common.h"
33 #include "libavutil/log.h"
34 #include "libavutil/pixfmt.h"
35 #include "libavutil/pixdesc.h"
36 
37 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
38 
39 #define FAST_BGR2YV12 // use 7-bit instead of 15-bit coefficients
40 
41 #define MAX_FILTER_SIZE 256
42 
43 #if HAVE_BIGENDIAN
44 #define ALT32_CORR (-1)
45 #else
46 #define ALT32_CORR 1
47 #endif
48 
49 #if ARCH_X86_64
50 # define APCK_PTR2 8
51 # define APCK_COEF 16
52 # define APCK_SIZE 24
53 #else
54 # define APCK_PTR2 4
55 # define APCK_COEF 8
56 # define APCK_SIZE 16
57 #endif
58 
59 struct SwsContext;
60 
61 typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t *src[],
62  int srcStride[], int srcSliceY, int srcSliceH,
63  uint8_t *dst[], int dstStride[]);
64 
77 typedef void (*yuv2planar1_fn)(const int16_t *src, uint8_t *dest, int dstW,
78  const uint8_t *dither, int offset);
79 
93 typedef void (*yuv2planarX_fn)(const int16_t *filter, int filterSize,
94  const int16_t **src, uint8_t *dest, int dstW,
95  const uint8_t *dither, int offset);
96 
112 typedef void (*yuv2interleavedX_fn)(struct SwsContext *c,
113  const int16_t *chrFilter,
114  int chrFilterSize,
115  const int16_t **chrUSrc,
116  const int16_t **chrVSrc,
117  uint8_t *dest, int dstW);
118 
148 typedef void (*yuv2packed1_fn)(struct SwsContext *c, const int16_t *lumSrc,
149  const int16_t *chrUSrc[2],
150  const int16_t *chrVSrc[2],
151  const int16_t *alpSrc, uint8_t *dest,
152  int dstW, int uvalpha, int y);
181 typedef void (*yuv2packed2_fn)(struct SwsContext *c, const int16_t *lumSrc[2],
182  const int16_t *chrUSrc[2],
183  const int16_t *chrVSrc[2],
184  const int16_t *alpSrc[2],
185  uint8_t *dest,
186  int dstW, int yalpha, int uvalpha, int y);
213 typedef void (*yuv2packedX_fn)(struct SwsContext *c, const int16_t *lumFilter,
214  const int16_t **lumSrc, int lumFilterSize,
215  const int16_t *chrFilter,
216  const int16_t **chrUSrc,
217  const int16_t **chrVSrc, int chrFilterSize,
218  const int16_t **alpSrc, uint8_t *dest,
219  int dstW, int y);
220 
247 typedef void (*yuv2anyX_fn)(struct SwsContext *c, const int16_t *lumFilter,
248  const int16_t **lumSrc, int lumFilterSize,
249  const int16_t *chrFilter,
250  const int16_t **chrUSrc,
251  const int16_t **chrVSrc, int chrFilterSize,
252  const int16_t **alpSrc, uint8_t **dest,
253  int dstW, int y);
254 
255 /* This struct should be aligned on at least a 32-byte boundary. */
256 typedef struct SwsContext {
261 
267  int srcW;
268  int srcH;
269  int dstH;
270  int chrSrcW;
271  int chrSrcH;
272  int chrDstW;
273  int chrDstH;
285  int vChrDrop;
286  int sliceDir;
287  double param[2];
288 
289  uint32_t pal_yuv[256];
290  uint32_t pal_rgb[256];
291 
302  int16_t **lumPixBuf;
303  int16_t **chrUPixBuf;
304  int16_t **chrVPixBuf;
305  int16_t **alpPixBuf;
312 
313 
315 
330  int16_t *hLumFilter;
331  int16_t *hChrFilter;
332  int16_t *vLumFilter;
333  int16_t *vChrFilter;
342 
343 
348 
350 
351  int dstY;
352  int flags;
353  void *yuvTable; // pointer to the yuv->rgb table start so it can be freed()
356  int table_gV[256];
358 
359  //Colorspace stuff
360  int contrast, brightness, saturation; // for sws_getColorspaceDetails
363  int srcRange;
364  int dstRange;
371 
372 #define RED_DITHER "0*8"
373 #define GREEN_DITHER "1*8"
374 #define BLUE_DITHER "2*8"
375 #define Y_COEFF "3*8"
376 #define VR_COEFF "4*8"
377 #define UB_COEFF "5*8"
378 #define VG_COEFF "6*8"
379 #define UG_COEFF "7*8"
380 #define Y_OFFSET "8*8"
381 #define U_OFFSET "9*8"
382 #define V_OFFSET "10*8"
383 #define LUM_MMX_FILTER_OFFSET "11*8"
384 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
385 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the ASM
386 #define ESP_OFFSET "11*8+4*4*256*2+8"
387 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
388 #define U_TEMP "11*8+4*4*256*2+24"
389 #define V_TEMP "11*8+4*4*256*2+32"
390 #define Y_TEMP "11*8+4*4*256*2+40"
391 #define ALP_MMX_FILTER_OFFSET "11*8+4*4*256*2+48"
392 #define UV_OFF_PX "11*8+4*4*256*3+48"
393 #define UV_OFF_BYTE "11*8+4*4*256*3+56"
394 #define DITHER16 "11*8+4*4*256*3+64"
395 #define DITHER32 "11*8+4*4*256*3+80"
396 
397  DECLARE_ALIGNED(8, uint64_t, redDither);
400 
401  DECLARE_ALIGNED(8, uint64_t, yCoeff);
402  DECLARE_ALIGNED(8, uint64_t, vrCoeff);
403  DECLARE_ALIGNED(8, uint64_t, ubCoeff);
404  DECLARE_ALIGNED(8, uint64_t, vgCoeff);
405  DECLARE_ALIGNED(8, uint64_t, ugCoeff);
406  DECLARE_ALIGNED(8, uint64_t, yOffset);
407  DECLARE_ALIGNED(8, uint64_t, uOffset);
408  DECLARE_ALIGNED(8, uint64_t, vOffset);
411  int dstW;
412  DECLARE_ALIGNED(8, uint64_t, esp);
413  DECLARE_ALIGNED(8, uint64_t, vRounder);
414  DECLARE_ALIGNED(8, uint64_t, u_temp);
415  DECLARE_ALIGNED(8, uint64_t, v_temp);
416  DECLARE_ALIGNED(8, uint64_t, y_temp);
418  // alignment of these values is not necessary, but merely here
419  // to maintain the same offset across x8632 and x86-64. Once we
420  // use proper offset macros in the asm, they can be removed.
421  DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px);
422  DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte);
423  DECLARE_ALIGNED(8, uint16_t, dither16)[8];
424  DECLARE_ALIGNED(8, uint32_t, dither32)[8];
425 
427 
428 #if HAVE_ALTIVEC
429  vector signed short CY;
430  vector signed short CRV;
431  vector signed short CBU;
432  vector signed short CGU;
433  vector signed short CGV;
434  vector signed short OY;
435  vector unsigned short CSHIFT;
436  vector signed short *vYCoeffsBank, *vCCoeffsBank;
437 #endif
438 
439  /* function pointers for swscale() */
447 
449  void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
450  int width, uint32_t *pal);
452  void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
453  int width, uint32_t *pal);
455  void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
456  const uint8_t *src1, const uint8_t *src2,
457  int width, uint32_t *pal);
458 
464  void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width);
465  void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
466  int width);
489  int16_t *dst, int dstWidth,
490  const uint8_t *src, int srcW, int xInc);
492  int16_t *dst1, int16_t *dst2, int dstWidth,
493  const uint8_t *src1, const uint8_t *src2,
494  int srcW, int xInc);
528  void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
529  const uint8_t *src, const int16_t *filter,
530  const int32_t *filterPos, int filterSize);
531  void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
532  const uint8_t *src, const int16_t *filter,
533  const int32_t *filterPos, int filterSize);
536  void (*lumConvertRange)(int16_t *dst, int width);
539  void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
540 
542 } SwsContext;
543 //FIXME check init (where 0)
544 
546 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
547  int fullRange, int brightness,
548  int contrast, int saturation);
549 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
550  int brightness, int contrast, int saturation);
551 
553  int lastInLumBuf, int lastInChrBuf);
554 
557 
558 const char *sws_format_name(enum AVPixelFormat format);
559 
561 {
562  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
563  av_assert0(desc);
564  return desc->comp[0].depth_minus1 == 15;
565 }
566 
568 {
569  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
570  av_assert0(desc);
571  return desc->comp[0].depth_minus1 == 8 || desc->comp[0].depth_minus1 == 9;
572 }
573 
575 {
576  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
577  av_assert0(desc);
578  return desc->flags & AV_PIX_FMT_FLAG_BE;
579 }
580 
582 {
583  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
584  av_assert0(desc);
585  return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
586 }
587 
589 {
590  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
591  av_assert0(desc);
592  return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
593 }
594 
596 {
597  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
598  av_assert0(desc);
599  return (desc->flags & AV_PIX_FMT_FLAG_RGB);
600 }
601 
602 #if 0 // FIXME
603 #define isGray(x) \
604  (!(av_pix_fmt_descriptors[x].flags & AV_PIX_FMT_FLAG_PAL) && \
605  av_pix_fmt_descriptors[x].nb_components <= 2)
606 #else
607 #define isGray(x) \
608  ((x) == AV_PIX_FMT_GRAY8 || \
609  (x) == AV_PIX_FMT_YA8 || \
610  (x) == AV_PIX_FMT_GRAY16BE || \
611  (x) == AV_PIX_FMT_GRAY16LE || \
612  (x) == AV_PIX_FMT_YA16BE || \
613  (x) == AV_PIX_FMT_YA16LE)
614 #endif
615 
616 #define isRGBinInt(x) \
617  ((x) == AV_PIX_FMT_RGB48BE || \
618  (x) == AV_PIX_FMT_RGB48LE || \
619  (x) == AV_PIX_FMT_RGB32 || \
620  (x) == AV_PIX_FMT_RGB32_1 || \
621  (x) == AV_PIX_FMT_RGB24 || \
622  (x) == AV_PIX_FMT_RGB565BE || \
623  (x) == AV_PIX_FMT_RGB565LE || \
624  (x) == AV_PIX_FMT_RGB555BE || \
625  (x) == AV_PIX_FMT_RGB555LE || \
626  (x) == AV_PIX_FMT_RGB444BE || \
627  (x) == AV_PIX_FMT_RGB444LE || \
628  (x) == AV_PIX_FMT_RGB8 || \
629  (x) == AV_PIX_FMT_RGB4 || \
630  (x) == AV_PIX_FMT_RGB4_BYTE || \
631  (x) == AV_PIX_FMT_RGBA64BE || \
632  (x) == AV_PIX_FMT_RGBA64LE || \
633  (x) == AV_PIX_FMT_MONOBLACK || \
634  (x) == AV_PIX_FMT_MONOWHITE)
635 
636 #define isBGRinInt(x) \
637  ((x) == AV_PIX_FMT_BGR48BE || \
638  (x) == AV_PIX_FMT_BGR48LE || \
639  (x) == AV_PIX_FMT_BGR32 || \
640  (x) == AV_PIX_FMT_BGR32_1 || \
641  (x) == AV_PIX_FMT_BGR24 || \
642  (x) == AV_PIX_FMT_BGR565BE || \
643  (x) == AV_PIX_FMT_BGR565LE || \
644  (x) == AV_PIX_FMT_BGR555BE || \
645  (x) == AV_PIX_FMT_BGR555LE || \
646  (x) == AV_PIX_FMT_BGR444BE || \
647  (x) == AV_PIX_FMT_BGR444LE || \
648  (x) == AV_PIX_FMT_BGR8 || \
649  (x) == AV_PIX_FMT_BGR4 || \
650  (x) == AV_PIX_FMT_BGR4_BYTE || \
651  (x) == AV_PIX_FMT_BGRA64BE || \
652  (x) == AV_PIX_FMT_BGRA64LE || \
653  (x) == AV_PIX_FMT_MONOBLACK || \
654  (x) == AV_PIX_FMT_MONOWHITE)
655 
656 #define isAnyRGB(x) \
657  (isRGBinInt(x) || \
658  isBGRinInt(x))
659 
661 {
662  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
663  av_assert0(desc);
664  return desc->nb_components == 2 || desc->nb_components == 4;
665 }
666 
668 {
669  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
670  av_assert0(desc);
671  return ((desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
672  pix_fmt == AV_PIX_FMT_PAL8);
673 }
674 
676 {
677  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
678  av_assert0(desc);
679  return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
680 }
681 
683 {
684  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
685  av_assert0(desc);
687 }
688 
690 {
691  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
692  av_assert0(desc);
693  return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
695 }
696 
698 {
699  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
700  av_assert0(desc);
701  return ((desc->flags & AV_PIX_FMT_FLAG_PAL) || (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) ||
702  pix_fmt == AV_PIX_FMT_YA8);
703 }
704 
705 extern const uint64_t ff_dither4[2];
706 extern const uint64_t ff_dither8[2];
707 
708 extern const uint8_t ff_dither_4x4_16[4][8];
709 extern const uint8_t ff_dither_8x8_32[8][8];
710 extern const uint8_t ff_dither_8x8_73[8][8];
711 extern const uint8_t ff_dither_8x8_128[8][8];
712 extern const uint8_t ff_dither_8x8_220[8][8];
713 
714 extern const int32_t ff_yuv2rgb_coeffs[8][4];
715 
716 extern const AVClass sws_context_class;
717 
724 
730 
742 
743 #endif /* SWSCALE_SWSCALE_INTERNAL_H */
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:1347
const char * sws_format_name(enum AVPixelFormat format)
Definition: utils.c:205
int16_t ** alpPixBuf
Ring buffer for scaled horizontal alpha plane lines to be fed to the vertical scaler.
void(* hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src, const int16_t *filter, const int32_t *filterPos, int filterSize)
ptrdiff_t uv_off_px
offset (in pixels) between u and v planes
const uint64_t ff_dither8[2]
int chrBufIndex
Index in ring buffer of the last scaled horizontal chroma line from source.
int chrSrcH
Height of source chroma planes.
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
uint64_t y_temp
void(* chrConvertRange)(int16_t *dst1, int16_t *dst2, int width)
Color range conversion function for chroma planes if needed.
uint8_t * chrMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for chroma planes.
uint64_t v_temp
#define av_always_inline
Definition: attributes.h:40
uint8_t * lumMmxextFilterCode
Runtime-generated MMXEXT horizontal fast bilinear scaler code for luma/alpha planes.
uint32_t pal_rgb[256]
void updateMMXDitherTables(SwsContext *c, int dstY, int lumBufIndex, int chrBufIndex, int lastInLumBuf, int lastInChrBuf)
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:660
int dstFormatBpp
Number of bits per pixel of the destination pixel format.
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:97
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
uint64_t redDither
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
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...
int srcRange
0 = MPG YUV range, 1 = JPG YUV range (source image).
const uint8_t * lumDither8
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...
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)
Definition: input.c:714
uint64_t ubCoeff
int srcH
Height of source luma/alpha planes.
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...
uint8_t
int vChrFilterSize
Vertical filter size for chroma pixels.
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:108
uint8_t * table_bU[256]
void(* chrToYV12)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, int width, uint32_t *pal)
Unscaled conversion of chroma planes to YV12 for horizontal scaler.
int16_t ** lumPixBuf
Ring buffer for scaled horizontal luma plane lines to be fed to the vertical scaler.
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:112
SwsFunc ff_yuv2rgb_init_x86(SwsContext *c)
Definition: yuv2rgb.c:73
int lastInLumBuf
Last scaled horizontal luma/alpha line from source in the ring buffer.
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 (...
uint64_t yOffset
enum AVPixelFormat dstFormat
Destination pixel format.
uint32_t dither32[8]
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
#define AV_PIX_FMT_FLAG_PSEUDOPAL
The pixel format is "pseudo-paletted".
Definition: pixdesc.h:134
int32_t * vChrFilterPos
Array of vertical filter starting positions for each dst[i] for chroma planes.
int dstH
Height of destination luma/alpha planes.
yuv2anyX_fn yuv2anyX
uint16_t depth_minus1
Number of bits in the component minus 1.
Definition: pixdesc.h:57
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
8bit gray, 8bit alpha
Definition: pixfmt.h:144
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.
yuv2packed1_fn yuv2packed1
uint64_t ugCoeff
int vChrBufSize
Number of vertical chroma lines allocated in the ring buffer.
const uint8_t ff_dither_8x8_220[8][8]
Definition: output.c:79
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)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
int chrDstW
Width of destination chroma planes.
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.
static void filter(MpegAudioContext *s, int ch, const short *samples, int incr)
Definition: mpegaudioenc.c:307
ptrdiff_t uv_off_byte
offset (in bytes) between u and v planes
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(* lumToYV12)(uint8_t *dst, const uint8_t *src, int width, uint32_t *pal)
Unscaled conversion of luma plane to YV12 for horizontal scaler.
#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
int32_t
int table_gV[256]
enum AVPixelFormat pix_fmt
Definition: movenc.c:843
void(* lumConvertRange)(int16_t *dst, int width)
Color range conversion function for luma plane if needed.
int srcColorspaceTable[4]
int dstW
Width of destination luma/alpha planes.
int sliceDir
Direction that slices are fed to the scaler (1 = top-to-bottom, -1 = bottom-to-top).
int(* SwsFunc)(struct SwsContext *context, const uint8_t *src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t *dst[], int dstStride[])
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1599
8 bit with PIX_FMT_RGB32 palette
Definition: pixfmt.h:76
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]
static const uint16_t dither[8][8]
Definition: vf_gradfun.c:46
static int width
Definition: utils.c:156
SwsFunc ff_getSwsFunc(SwsContext *c)
Return function pointer to fastest main scaler path function depending on architecture and available ...
Definition: swscale.c:771
const uint8_t ff_dither_8x8_128[8][8]
Definition: swscale.c:38
int dstColorspaceTable[4]
const AVClass * av_class
info on struct for av_log
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...
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)
const uint8_t ff_dither_8x8_32[8][8]
Definition: output.c:56
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...
int chrDstH
Height of destination chroma planes.
static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
uint8_t * table_gU[256]
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:33
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:124
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...
int vLumFilterSize
Vertical filter size for luma/alpha pixels.
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
Definition: yuv2rgb.c:559
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(* readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4], int width)
void ff_sws_init_swscale_x86(SwsContext *c)
Definition: swscale.c:305
int16_t * hLumFilter
Array of horizontal filter coefficients for luma/alpha planes.
const uint8_t ff_dither_8x8_73[8][8]
Definition: output.c:67
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.
int lastInChrBuf
Last scaled horizontal chroma line from source in the ring buffer.
yuv2packed2_fn yuv2packed2
double param[2]
Input parameters for scaling algorithms that need them.
void(* readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width)
Functions to read planar input, such as planar RGB, and convert internally to Y/UV.
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...
enum AVPixelFormat srcFormat
Source pixel format.
int32_t chrMmxFilter[4 *MAX_FILTER_SIZE]
uint64_t greenDither
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:128
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 ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4], int brightness, int contrast, int saturation)
const AVClass sws_context_class
Definition: options.c:69
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 ...
int srcFormatBpp
Number of bits per pixel of the source pixel format.
uint64_t yCoeff
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...
static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
int16_t * vLumFilter
Array of vertical filter coefficients for luma/alpha planes.
const uint8_t ff_dither_4x4_16[4][8]
Definition: output.c:49
static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int16_t * hChrFilter
Array of horizontal filter coefficients for chroma planes.
static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
void(* alpToYV12)(uint8_t *dst, const uint8_t *src, int width, uint32_t *pal)
Unscaled conversion of alpha plane to YV12 for horizontal scaler.
int chrDstHSubSample
Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination...
int chrSrcW
Width of source chroma planes.
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...
uint8_t * table_rV[256]
uint32_t pal_yuv[256]
uint64_t vOffset
SwsFunc ff_yuv2rgb_init_ppc(SwsContext *c)