Libav
swscale_internal.h
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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 #if ARCH_BFIN
440  DECLARE_ALIGNED(4, uint32_t, oy);
441  DECLARE_ALIGNED(4, uint32_t, oc);
442  DECLARE_ALIGNED(4, uint32_t, zero);
443  DECLARE_ALIGNED(4, uint32_t, cy);
444  DECLARE_ALIGNED(4, uint32_t, crv);
445  DECLARE_ALIGNED(4, uint32_t, rmask);
446  DECLARE_ALIGNED(4, uint32_t, cbu);
447  DECLARE_ALIGNED(4, uint32_t, bmask);
448  DECLARE_ALIGNED(4, uint32_t, cgu);
449  DECLARE_ALIGNED(4, uint32_t, cgv);
450  DECLARE_ALIGNED(4, uint32_t, gmask);
451 #endif
452 
453 #if HAVE_VIS
454  DECLARE_ALIGNED(8, uint64_t, sparc_coeffs)[10];
455 #endif
456 
457  /* function pointers for swscale() */
465 
467  void (*lumToYV12)(uint8_t *dst, const uint8_t *src,
468  int width, uint32_t *pal);
470  void (*alpToYV12)(uint8_t *dst, const uint8_t *src,
471  int width, uint32_t *pal);
473  void (*chrToYV12)(uint8_t *dstU, uint8_t *dstV,
474  const uint8_t *src1, const uint8_t *src2,
475  int width, uint32_t *pal);
476 
482  void (*readLumPlanar)(uint8_t *dst, const uint8_t *src[4], int width);
483  void (*readChrPlanar)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src[4],
484  int width);
507  int16_t *dst, int dstWidth,
508  const uint8_t *src, int srcW, int xInc);
510  int16_t *dst1, int16_t *dst2, int dstWidth,
511  const uint8_t *src1, const uint8_t *src2,
512  int srcW, int xInc);
546  void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW,
547  const uint8_t *src, const int16_t *filter,
548  const int32_t *filterPos, int filterSize);
549  void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW,
550  const uint8_t *src, const int16_t *filter,
551  const int32_t *filterPos, int filterSize);
554 
555  void (*lumConvertRange)(int16_t *dst, int width);
557  void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width);
558 
560 } SwsContext;
561 //FIXME check init (where 0)
562 
564 int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],
565  int fullRange, int brightness,
566  int contrast, int saturation);
567 void ff_yuv2rgb_init_tables_ppc(SwsContext *c, const int inv_table[4],
568  int brightness, int contrast, int saturation);
569 
571  int lastInLumBuf, int lastInChrBuf);
572 
577 
578 const char *sws_format_name(enum AVPixelFormat format);
579 
581 {
582  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
583  av_assert0(desc);
584  return desc->comp[0].depth_minus1 == 15;
585 }
586 
588 {
589  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
590  av_assert0(desc);
591  return desc->comp[0].depth_minus1 == 8 || desc->comp[0].depth_minus1 == 9;
592 }
593 
595 {
596  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
597  av_assert0(desc);
598  return desc->flags & AV_PIX_FMT_FLAG_BE;
599 }
600 
602 {
603  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
604  av_assert0(desc);
605  return !(desc->flags & AV_PIX_FMT_FLAG_RGB) && desc->nb_components >= 2;
606 }
607 
609 {
610  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
611  av_assert0(desc);
612  return ((desc->flags & AV_PIX_FMT_FLAG_PLANAR) && isYUV(pix_fmt));
613 }
614 
616 {
617  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
618  av_assert0(desc);
619  return (desc->flags & AV_PIX_FMT_FLAG_RGB);
620 }
621 
622 #if 0 // FIXME
623 #define isGray(x) \
624  (!(av_pix_fmt_descriptors[x].flags & AV_PIX_FMT_FLAG_PAL) && \
625  av_pix_fmt_descriptors[x].nb_components <= 2)
626 #else
627 #define isGray(x) \
628  ((x) == AV_PIX_FMT_GRAY8 || \
629  (x) == AV_PIX_FMT_Y400A || \
630  (x) == AV_PIX_FMT_GRAY16BE || \
631  (x) == AV_PIX_FMT_GRAY16LE)
632 #endif
633 
634 #define isRGBinInt(x) \
635  ((x) == AV_PIX_FMT_RGB48BE || \
636  (x) == AV_PIX_FMT_RGB48LE || \
637  (x) == AV_PIX_FMT_RGB32 || \
638  (x) == AV_PIX_FMT_RGB32_1 || \
639  (x) == AV_PIX_FMT_RGB24 || \
640  (x) == AV_PIX_FMT_RGB565BE || \
641  (x) == AV_PIX_FMT_RGB565LE || \
642  (x) == AV_PIX_FMT_RGB555BE || \
643  (x) == AV_PIX_FMT_RGB555LE || \
644  (x) == AV_PIX_FMT_RGB444BE || \
645  (x) == AV_PIX_FMT_RGB444LE || \
646  (x) == AV_PIX_FMT_RGB8 || \
647  (x) == AV_PIX_FMT_RGB4 || \
648  (x) == AV_PIX_FMT_RGB4_BYTE || \
649  (x) == AV_PIX_FMT_MONOBLACK || \
650  (x) == AV_PIX_FMT_MONOWHITE)
651 
652 #define isBGRinInt(x) \
653  ((x) == AV_PIX_FMT_BGR48BE || \
654  (x) == AV_PIX_FMT_BGR48LE || \
655  (x) == AV_PIX_FMT_BGR32 || \
656  (x) == AV_PIX_FMT_BGR32_1 || \
657  (x) == AV_PIX_FMT_BGR24 || \
658  (x) == AV_PIX_FMT_BGR565BE || \
659  (x) == AV_PIX_FMT_BGR565LE || \
660  (x) == AV_PIX_FMT_BGR555BE || \
661  (x) == AV_PIX_FMT_BGR555LE || \
662  (x) == AV_PIX_FMT_BGR444BE || \
663  (x) == AV_PIX_FMT_BGR444LE || \
664  (x) == AV_PIX_FMT_BGR8 || \
665  (x) == AV_PIX_FMT_BGR4 || \
666  (x) == AV_PIX_FMT_BGR4_BYTE || \
667  (x) == AV_PIX_FMT_MONOBLACK || \
668  (x) == AV_PIX_FMT_MONOWHITE)
669 
670 #define isAnyRGB(x) \
671  (isRGBinInt(x) || \
672  isBGRinInt(x))
673 
675 {
676  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
677  av_assert0(desc);
678  return desc->nb_components == 2 || desc->nb_components == 4;
679 }
680 
682 {
683  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
684  av_assert0(desc);
685  return ((desc->nb_components >= 2 && !(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) ||
686  pix_fmt == AV_PIX_FMT_PAL8);
687 }
688 
690 {
691  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
692  av_assert0(desc);
693  return (desc->nb_components >= 2 && (desc->flags & AV_PIX_FMT_FLAG_PLANAR));
694 }
695 
697 {
698  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
699  av_assert0(desc);
701 }
702 
704 {
705  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
706  av_assert0(desc);
707  return ((desc->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) ==
709 }
710 
712 {
713  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
714  av_assert0(desc);
715  return ((desc->flags & AV_PIX_FMT_FLAG_PAL) || (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) ||
716  pix_fmt == AV_PIX_FMT_Y400A);
717 }
718 
719 extern const uint64_t ff_dither4[2];
720 extern const uint64_t ff_dither8[2];
721 
722 extern const uint8_t ff_dither_4x4_16[4][8];
723 extern const uint8_t ff_dither_8x8_32[8][8];
724 extern const uint8_t ff_dither_8x8_73[8][8];
725 extern const uint8_t ff_dither_8x8_128[8][8];
726 extern const uint8_t ff_dither_8x8_220[8][8];
727 
728 extern const int32_t ff_yuv2rgb_coeffs[8][4];
729 
730 extern const AVClass sws_context_class;
731 
739 
745 
757 
758 #endif /* SWSCALE_SWSCALE_INTERNAL_H */