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FFmpeg/libswscale/yuv2rgb.c

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/*
* yuv2rgb.c, Software YUV to RGB converter
*
* Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
* All Rights Reserved.
*
* Functions broken out from display_x11.c and several new modes
* added by Håkan Hjort <d95hjort@dtek.chalmers.se>
*
* 15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>
*
* MMX/MMX2 template stuff (needed for fast movntq support),
* 1,4,8bpp support and context / deglobalize stuff
* by Michael Niedermayer (michaelni@gmx.at)
*
* This file is part of mpeg2dec, a free MPEG-2 video decoder
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* mpeg2dec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with mpeg2dec; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <assert.h>
#include "config.h"
#include "rgb2rgb.h"
#include "swscale.h"
#include "swscale_internal.h"
#ifdef HAVE_MLIB
#include "yuv2rgb_mlib.c"
#endif
#define DITHER1XBPP // only for mmx
const uint8_t __attribute__((aligned(8))) dither_2x2_4[2][8]={
{ 1, 3, 1, 3, 1, 3, 1, 3, },
{ 2, 0, 2, 0, 2, 0, 2, 0, },
};
const uint8_t __attribute__((aligned(8))) dither_2x2_8[2][8]={
{ 6, 2, 6, 2, 6, 2, 6, 2, },
{ 0, 4, 0, 4, 0, 4, 0, 4, },
};
const uint8_t __attribute__((aligned(8))) dither_8x8_32[8][8]={
{ 17, 9, 23, 15, 16, 8, 22, 14, },
{ 5, 29, 3, 27, 4, 28, 2, 26, },
{ 21, 13, 19, 11, 20, 12, 18, 10, },
{ 0, 24, 6, 30, 1, 25, 7, 31, },
{ 16, 8, 22, 14, 17, 9, 23, 15, },
{ 4, 28, 2, 26, 5, 29, 3, 27, },
{ 20, 12, 18, 10, 21, 13, 19, 11, },
{ 1, 25, 7, 31, 0, 24, 6, 30, },
};
#if 0
const uint8_t __attribute__((aligned(8))) dither_8x8_64[8][8]={
{ 0, 48, 12, 60, 3, 51, 15, 63, },
{ 32, 16, 44, 28, 35, 19, 47, 31, },
{ 8, 56, 4, 52, 11, 59, 7, 55, },
{ 40, 24, 36, 20, 43, 27, 39, 23, },
{ 2, 50, 14, 62, 1, 49, 13, 61, },
{ 34, 18, 46, 30, 33, 17, 45, 29, },
{ 10, 58, 6, 54, 9, 57, 5, 53, },
{ 42, 26, 38, 22, 41, 25, 37, 21, },
};
#endif
const uint8_t __attribute__((aligned(8))) dither_8x8_73[8][8]={
{ 0, 55, 14, 68, 3, 58, 17, 72, },
{ 37, 18, 50, 32, 40, 22, 54, 35, },
{ 9, 64, 5, 59, 13, 67, 8, 63, },
{ 46, 27, 41, 23, 49, 31, 44, 26, },
{ 2, 57, 16, 71, 1, 56, 15, 70, },
{ 39, 21, 52, 34, 38, 19, 51, 33, },
{ 11, 66, 7, 62, 10, 65, 6, 60, },
{ 48, 30, 43, 25, 47, 29, 42, 24, },
};
#if 0
const uint8_t __attribute__((aligned(8))) dither_8x8_128[8][8]={
{ 68, 36, 92, 60, 66, 34, 90, 58, },
{ 20, 116, 12, 108, 18, 114, 10, 106, },
{ 84, 52, 76, 44, 82, 50, 74, 42, },
{ 0, 96, 24, 120, 6, 102, 30, 126, },
{ 64, 32, 88, 56, 70, 38, 94, 62, },
{ 16, 112, 8, 104, 22, 118, 14, 110, },
{ 80, 48, 72, 40, 86, 54, 78, 46, },
{ 4, 100, 28, 124, 2, 98, 26, 122, },
};
#endif
#if 1
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
{117, 62, 158, 103, 113, 58, 155, 100, },
{ 34, 199, 21, 186, 31, 196, 17, 182, },
{144, 89, 131, 76, 141, 86, 127, 72, },
{ 0, 165, 41, 206, 10, 175, 52, 217, },
{110, 55, 151, 96, 120, 65, 162, 107, },
{ 28, 193, 14, 179, 38, 203, 24, 189, },
{138, 83, 124, 69, 148, 93, 134, 79, },
{ 7, 172, 48, 213, 3, 168, 45, 210, },
};
#elif 1
// tries to correct a gamma of 1.5
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
{ 0, 143, 18, 200, 2, 156, 25, 215, },
{ 78, 28, 125, 64, 89, 36, 138, 74, },
{ 10, 180, 3, 161, 16, 195, 8, 175, },
{109, 51, 93, 38, 121, 60, 105, 47, },
{ 1, 152, 23, 210, 0, 147, 20, 205, },
{ 85, 33, 134, 71, 81, 30, 130, 67, },
{ 14, 190, 6, 171, 12, 185, 5, 166, },
{117, 57, 101, 44, 113, 54, 97, 41, },
};
#elif 1
// tries to correct a gamma of 2.0
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
{ 0, 124, 8, 193, 0, 140, 12, 213, },
{ 55, 14, 104, 42, 66, 19, 119, 52, },
{ 3, 168, 1, 145, 6, 187, 3, 162, },
{ 86, 31, 70, 21, 99, 39, 82, 28, },
{ 0, 134, 11, 206, 0, 129, 9, 200, },
{ 62, 17, 114, 48, 58, 16, 109, 45, },
{ 5, 181, 2, 157, 4, 175, 1, 151, },
{ 95, 36, 78, 26, 90, 34, 74, 24, },
};
#else
// tries to correct a gamma of 2.5
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
{ 0, 107, 3, 187, 0, 125, 6, 212, },
{ 39, 7, 86, 28, 49, 11, 102, 36, },
{ 1, 158, 0, 131, 3, 180, 1, 151, },
{ 68, 19, 52, 12, 81, 25, 64, 17, },
{ 0, 119, 5, 203, 0, 113, 4, 195, },
{ 45, 9, 96, 33, 42, 8, 91, 30, },
{ 2, 172, 1, 144, 2, 165, 0, 137, },
{ 77, 23, 60, 15, 72, 21, 56, 14, },
};
#endif
#ifdef HAVE_MMX
/* hope these constant values are cache line aligned */
static uint64_t attribute_used __attribute__((aligned(8))) mmx_00ffw = 0x00ff00ff00ff00ffULL;
static uint64_t attribute_used __attribute__((aligned(8))) mmx_redmask = 0xf8f8f8f8f8f8f8f8ULL;
static uint64_t attribute_used __attribute__((aligned(8))) mmx_grnmask = 0xfcfcfcfcfcfcfcfcULL;
static uint64_t attribute_used __attribute__((aligned(8))) M24A= 0x00FF0000FF0000FFULL;
static uint64_t attribute_used __attribute__((aligned(8))) M24B= 0xFF0000FF0000FF00ULL;
static uint64_t attribute_used __attribute__((aligned(8))) M24C= 0x0000FF0000FF0000ULL;
// the volatile is required because gcc otherwise optimizes some writes away not knowing that these
// are read in the asm block
static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;
static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;
static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;
static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;
static uint64_t __attribute__((aligned(8))) dither4[2]={
0x0103010301030103LL,
0x0200020002000200LL,};
static uint64_t __attribute__((aligned(8))) dither8[2]={
0x0602060206020602LL,
0x0004000400040004LL,};
#undef HAVE_MMX
//MMX versions
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX
#include "yuv2rgb_template.c"
//MMX2 versions
#undef RENAME
#define HAVE_MMX
#define HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX2
#include "yuv2rgb_template.c"
#endif /* defined(ARCH_X86) */
const int32_t Inverse_Table_6_9[8][4] = {
{117504, 138453, 13954, 34903}, /* no sequence_display_extension */
{117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
{104597, 132201, 25675, 53279}, /* unspecified */
{104597, 132201, 25675, 53279}, /* reserved */
{104448, 132798, 24759, 53109}, /* FCC */
{104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
{104597, 132201, 25675, 53279}, /* SMPTE 170M */
{117579, 136230, 16907, 35559} /* SMPTE 240M (1987) */
};
#define RGB(i) \
U = pu[i]; \
V = pv[i]; \
r = (void *)c->table_rV[V]; \
g = (void *)(c->table_gU[U] + c->table_gV[V]); \
b = (void *)c->table_bU[U];
#define DST1(i) \
Y = py_1[2*i]; \
dst_1[2*i] = r[Y] + g[Y] + b[Y]; \
Y = py_1[2*i+1]; \
dst_1[2*i+1] = r[Y] + g[Y] + b[Y];
#define DST2(i) \
Y = py_2[2*i]; \
dst_2[2*i] = r[Y] + g[Y] + b[Y]; \
Y = py_2[2*i+1]; \
dst_2[2*i+1] = r[Y] + g[Y] + b[Y];
#define DST1RGB(i) \
Y = py_1[2*i]; \
dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y]; \
Y = py_1[2*i+1]; \
dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];
#define DST2RGB(i) \
Y = py_2[2*i]; \
dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y]; \
Y = py_2[2*i+1]; \
dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];
#define DST1BGR(i) \
Y = py_1[2*i]; \
dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y]; \
Y = py_1[2*i+1]; \
dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];
#define DST2BGR(i) \
Y = py_2[2*i]; \
dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y]; \
Y = py_2[2*i+1]; \
dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];
#define PROLOG(func_name, dst_type) \
static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \
int srcSliceH, uint8_t* dst[], int dstStride[]){\
int y;\
\
if (c->srcFormat == PIX_FMT_YUV422P){\
srcStride[1] *= 2;\
srcStride[2] *= 2;\
}\
for (y=0; y<srcSliceH; y+=2){\
dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY )*dstStride[0]);\
dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
dst_type av_unused *r, *b;\
dst_type *g;\
uint8_t *py_1= src[0] + y*srcStride[0];\
uint8_t *py_2= py_1 + srcStride[0];\
uint8_t *pu= src[1] + (y>>1)*srcStride[1];\
uint8_t *pv= src[2] + (y>>1)*srcStride[2];\
unsigned int h_size= c->dstW>>3;\
while (h_size--) {\
int av_unused U, V;\
int Y;\
#define EPILOG1(dst_delta)\
pu += 4;\
pv += 4;\
py_1 += 8;\
py_2 += 8;\
dst_1 += dst_delta;\
dst_2 += dst_delta;\
}\
if (c->dstW & 4) {\
int av_unused U, V;\
int Y;\
#define EPILOG2()\
}\
}\
return srcSliceH;\
}
#define EPILOG(dst_delta)\
EPILOG1(dst_delta)\
EPILOG2()
PROLOG(yuv2rgb_c_32, uint32_t)
RGB(0);
DST1(0);
DST2(0);
RGB(1);
DST2(1);
DST1(1);
RGB(2);
DST1(2);
DST2(2);
RGB(3);
DST2(3);
DST1(3);
EPILOG1(8)
RGB(0);
DST1(0);
DST2(0);
RGB(1);
DST2(1);
DST1(1);
EPILOG2()
PROLOG(yuv2rgb_c_24_rgb, uint8_t)
RGB(0);
DST1RGB(0);
DST2RGB(0);
RGB(1);
DST2RGB(1);
DST1RGB(1);
RGB(2);
DST1RGB(2);
DST2RGB(2);
RGB(3);
DST2RGB(3);
DST1RGB(3);
EPILOG1(24)
RGB(0);
DST1RGB(0);
DST2RGB(0);
RGB(1);
DST2RGB(1);
DST1RGB(1);
EPILOG2()
// only trivial mods from yuv2rgb_c_24_rgb
PROLOG(yuv2rgb_c_24_bgr, uint8_t)
RGB(0);
DST1BGR(0);
DST2BGR(0);
RGB(1);
DST2BGR(1);
DST1BGR(1);
RGB(2);
DST1BGR(2);
DST2BGR(2);
RGB(3);
DST2BGR(3);
DST1BGR(3);
EPILOG1(24)
RGB(0);
DST1BGR(0);
DST2BGR(0);
RGB(1);
DST2BGR(1);
DST1BGR(1);
EPILOG2()
// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_16, uint16_t)
RGB(0);
DST1(0);
DST2(0);
RGB(1);
DST2(1);
DST1(1);
RGB(2);
DST1(2);
DST2(2);
RGB(3);
DST2(3);
DST1(3);
EPILOG(8)
// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_8, uint8_t)
RGB(0);
DST1(0);
DST2(0);
RGB(1);
DST2(1);
DST1(1);
RGB(2);
DST1(2);
DST2(2);
RGB(3);
DST2(3);
DST1(3);
EPILOG(8)
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)
const uint8_t *d32= dither_8x8_32[y&7];
const uint8_t *d64= dither_8x8_73[y&7];
#define DST1bpp8(i,o) \
Y = py_1[2*i]; \
dst_1[2*i] = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \
Y = py_1[2*i+1]; \
dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
#define DST2bpp8(i,o) \
Y = py_2[2*i]; \
dst_2[2*i] = r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]]; \
Y = py_2[2*i+1]; \
dst_2[2*i+1] = r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];
RGB(0);
DST1bpp8(0,0);
DST2bpp8(0,0);
RGB(1);
DST2bpp8(1,2);
DST1bpp8(1,2);
RGB(2);
DST1bpp8(2,4);
DST2bpp8(2,4);
RGB(3);
DST2bpp8(3,6);
DST1bpp8(3,6);
EPILOG(8)
// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_4, uint8_t)
int acc;
#define DST1_4(i) \
Y = py_1[2*i]; \
acc = r[Y] + g[Y] + b[Y]; \
Y = py_1[2*i+1]; \
acc |= (r[Y] + g[Y] + b[Y])<<4; \
dst_1[i] = acc;
#define DST2_4(i) \
Y = py_2[2*i]; \
acc = r[Y] + g[Y] + b[Y]; \
Y = py_2[2*i+1]; \
acc |= (r[Y] + g[Y] + b[Y])<<4; \
dst_2[i] = acc;
RGB(0);
DST1_4(0);
DST2_4(0);
RGB(1);
DST2_4(1);
DST1_4(1);
RGB(2);
DST1_4(2);
DST2_4(2);
RGB(3);
DST2_4(3);
DST1_4(3);
EPILOG(4)
PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)
const uint8_t *d64= dither_8x8_73[y&7];
const uint8_t *d128=dither_8x8_220[y&7];
int acc;
#define DST1bpp4(i,o) \
Y = py_1[2*i]; \
acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
Y = py_1[2*i+1]; \
acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4; \
dst_1[i]= acc;
#define DST2bpp4(i,o) \
Y = py_2[2*i]; \
acc = r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]]; \
Y = py_2[2*i+1]; \
acc |= (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4; \
dst_2[i]= acc;
RGB(0);
DST1bpp4(0,0);
DST2bpp4(0,0);
RGB(1);
DST2bpp4(1,2);
DST1bpp4(1,2);
RGB(2);
DST1bpp4(2,4);
DST2bpp4(2,4);
RGB(3);
DST2bpp4(3,6);
DST1bpp4(3,6);
EPILOG(4)
// This is exactly the same code as yuv2rgb_c_32 except for the types of
// r, g, b, dst_1, dst_2
PROLOG(yuv2rgb_c_4b, uint8_t)
RGB(0);
DST1(0);
DST2(0);
RGB(1);
DST2(1);
DST1(1);
RGB(2);
DST1(2);
DST2(2);
RGB(3);
DST2(3);
DST1(3);
EPILOG(8)
PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)
const uint8_t *d64= dither_8x8_73[y&7];
const uint8_t *d128=dither_8x8_220[y&7];
#define DST1bpp4b(i,o) \
Y = py_1[2*i]; \
dst_1[2*i] = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
Y = py_1[2*i+1]; \
dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
#define DST2bpp4b(i,o) \
Y = py_2[2*i]; \
dst_2[2*i] = r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]]; \
Y = py_2[2*i+1]; \
dst_2[2*i+1] = r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];
RGB(0);
DST1bpp4b(0,0);
DST2bpp4b(0,0);
RGB(1);
DST2bpp4b(1,2);
DST1bpp4b(1,2);
RGB(2);
DST1bpp4b(2,4);
DST2bpp4b(2,4);
RGB(3);
DST2bpp4b(3,6);
DST1bpp4b(3,6);
EPILOG(8)
PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)
const uint8_t *d128=dither_8x8_220[y&7];
char out_1=0, out_2=0;
g= c->table_gU[128] + c->table_gV[128];
#define DST1bpp1(i,o) \
Y = py_1[2*i]; \
out_1+= out_1 + g[Y+d128[0+o]]; \
Y = py_1[2*i+1]; \
out_1+= out_1 + g[Y+d128[1+o]];
#define DST2bpp1(i,o) \
Y = py_2[2*i]; \
out_2+= out_2 + g[Y+d128[8+o]]; \
Y = py_2[2*i+1]; \
out_2+= out_2 + g[Y+d128[9+o]];
DST1bpp1(0,0);
DST2bpp1(0,0);
DST2bpp1(1,2);
DST1bpp1(1,2);
DST1bpp1(2,4);
DST2bpp1(2,4);
DST2bpp1(3,6);
DST1bpp1(3,6);
dst_1[0]= out_1;
dst_2[0]= out_2;
EPILOG(1)
SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)
{
#if defined(HAVE_MMX2) || defined(HAVE_MMX)
if (c->flags & SWS_CPU_CAPS_MMX2){
switch(c->dstFormat){
case PIX_FMT_RGB32: return yuv420_rgb32_MMX2;
case PIX_FMT_BGR24: return yuv420_rgb24_MMX2;
case PIX_FMT_BGR565: return yuv420_rgb16_MMX2;
case PIX_FMT_BGR555: return yuv420_rgb15_MMX2;
}
}
if (c->flags & SWS_CPU_CAPS_MMX){
switch(c->dstFormat){
case PIX_FMT_RGB32: return yuv420_rgb32_MMX;
case PIX_FMT_BGR24: return yuv420_rgb24_MMX;
case PIX_FMT_BGR565: return yuv420_rgb16_MMX;
case PIX_FMT_BGR555: return yuv420_rgb15_MMX;
}
}
#endif
#ifdef HAVE_MLIB
{
SwsFunc t= yuv2rgb_init_mlib(c);
if (t) return t;
}
#endif
#ifdef HAVE_ALTIVEC
if (c->flags & SWS_CPU_CAPS_ALTIVEC)
{
SwsFunc t = yuv2rgb_init_altivec(c);
if (t) return t;
}
#endif
#ifdef ARCH_BFIN
if (c->flags & SWS_CPU_CAPS_BFIN)
{
SwsFunc t = ff_bfin_yuv2rgb_get_func_ptr (c);
if (t) return t;
}
#endif
av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found\n");
switch(c->dstFormat){
case PIX_FMT_BGR32:
case PIX_FMT_RGB32: return yuv2rgb_c_32;
case PIX_FMT_RGB24: return yuv2rgb_c_24_rgb;
case PIX_FMT_BGR24: return yuv2rgb_c_24_bgr;
case PIX_FMT_RGB565:
case PIX_FMT_BGR565:
case PIX_FMT_RGB555:
case PIX_FMT_BGR555: return yuv2rgb_c_16;
case PIX_FMT_RGB8:
case PIX_FMT_BGR8: return yuv2rgb_c_8_ordered_dither;
case PIX_FMT_RGB4:
case PIX_FMT_BGR4: return yuv2rgb_c_4_ordered_dither;
case PIX_FMT_RGB4_BYTE:
case PIX_FMT_BGR4_BYTE: return yuv2rgb_c_4b_ordered_dither;
case PIX_FMT_MONOBLACK: return yuv2rgb_c_1_ordered_dither;
default:
assert(0);
}
return NULL;
}
static int div_round (int dividend, int divisor)
{
if (dividend > 0)
return (dividend + (divisor>>1)) / divisor;
else
return -((-dividend + (divisor>>1)) / divisor);
}
int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
{
const int isRgb = isBGR(c->dstFormat);
const int bpp = fmt_depth(c->dstFormat);
int i;
uint8_t table_Y[1024];
uint32_t *table_32 = 0;
uint16_t *table_16 = 0;
uint8_t *table_8 = 0;
uint8_t *table_332 = 0;
uint8_t *table_121 = 0;
uint8_t *table_1 = 0;
int entry_size = 0;
void *table_r = 0, *table_g = 0, *table_b = 0;
void *table_start;
int64_t crv = inv_table[0];
int64_t cbu = inv_table[1];
int64_t cgu = -inv_table[2];
int64_t cgv = -inv_table[3];
int64_t cy = 1<<16;
int64_t oy = 0;
//printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
if (!fullRange){
cy= (cy*255) / 219;
oy= 16<<16;
}else{
crv= (crv*224) / 255;
cbu= (cbu*224) / 255;
cgu= (cgu*224) / 255;
cgv= (cgv*224) / 255;
}
cy = (cy *contrast )>>16;
crv= (crv*contrast * saturation)>>32;
cbu= (cbu*contrast * saturation)>>32;
cgu= (cgu*contrast * saturation)>>32;
cgv= (cgv*contrast * saturation)>>32;
//printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);
oy -= 256*brightness;
for (i = 0; i < 1024; i++) {
int j;
j= (cy*(((i - 384)<<16) - oy) + (1<<31))>>32;
j = (j < 0) ? 0 : ((j > 255) ? 255 : j);
table_Y[i] = j;
}
switch (bpp) {
case 32:
table_start= table_32 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));
entry_size = sizeof (uint32_t);
table_r = table_32 + 197;
table_b = table_32 + 197 + 685;
table_g = table_32 + 197 + 2*682;
for (i = -197; i < 256+197; i++)
((uint32_t *)table_r)[i] = table_Y[i+384] << (isRgb ? 16 : 0);
for (i = -132; i < 256+132; i++)
((uint32_t *)table_g)[i] = table_Y[i+384] << 8;
for (i = -232; i < 256+232; i++)
((uint32_t *)table_b)[i] = table_Y[i+384] << (isRgb ? 0 : 16);
break;
case 24:
table_start= table_8 = av_malloc ((256 + 2*232) * sizeof (uint8_t));
entry_size = sizeof (uint8_t);
table_r = table_g = table_b = table_8 + 232;
for (i = -232; i < 256+232; i++)
((uint8_t * )table_b)[i] = table_Y[i+384];
break;
case 15:
case 16:
table_start= table_16 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));
entry_size = sizeof (uint16_t);
table_r = table_16 + 197;
table_b = table_16 + 197 + 685;
table_g = table_16 + 197 + 2*682;
for (i = -197; i < 256+197; i++) {
int j = table_Y[i+384] >> 3;
if (isRgb)
j <<= ((bpp==16) ? 11 : 10);
((uint16_t *)table_r)[i] = j;
}
for (i = -132; i < 256+132; i++) {
int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);
((uint16_t *)table_g)[i] = j << 5;
}
for (i = -232; i < 256+232; i++) {
int j = table_Y[i+384] >> 3;
if (!isRgb)
j <<= ((bpp==16) ? 11 : 10);
((uint16_t *)table_b)[i] = j;
}
break;
case 8:
table_start= table_332 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));
entry_size = sizeof (uint8_t);
table_r = table_332 + 197;
table_b = table_332 + 197 + 685;
table_g = table_332 + 197 + 2*682;
for (i = -197; i < 256+197; i++) {
int j = (table_Y[i+384 - 16] + 18)/36;
if (isRgb)
j <<= 5;
((uint8_t *)table_r)[i] = j;
}
for (i = -132; i < 256+132; i++) {
int j = (table_Y[i+384 - 16] + 18)/36;
if (!isRgb)
j <<= 1;
((uint8_t *)table_g)[i] = j << 2;
}
for (i = -232; i < 256+232; i++) {
int j = (table_Y[i+384 - 37] + 43)/85;
if (!isRgb)
j <<= 6;
((uint8_t *)table_b)[i] = j;
}
break;
case 4:
case 4|128:
table_start= table_121 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));
entry_size = sizeof (uint8_t);
table_r = table_121 + 197;
table_b = table_121 + 197 + 685;
table_g = table_121 + 197 + 2*682;
for (i = -197; i < 256+197; i++) {
int j = table_Y[i+384 - 110] >> 7;
if (isRgb)
j <<= 3;
((uint8_t *)table_r)[i] = j;
}
for (i = -132; i < 256+132; i++) {
int j = (table_Y[i+384 - 37]+ 43)/85;
((uint8_t *)table_g)[i] = j << 1;
}
for (i = -232; i < 256+232; i++) {
int j =table_Y[i+384 - 110] >> 7;
if (!isRgb)
j <<= 3;
((uint8_t *)table_b)[i] = j;
}
break;
case 1:
table_start= table_1 = av_malloc (256*2 * sizeof (uint8_t));
entry_size = sizeof (uint8_t);
table_g = table_1;
table_r = table_b = NULL;
for (i = 0; i < 256+256; i++) {
int j = table_Y[i + 384 - 110]>>7;
((uint8_t *)table_g)[i] = j;
}
break;
default:
table_start= NULL;
av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
//free mem?
return -1;
}
for (i = 0; i < 256; i++) {
c->table_rV[i] = (uint8_t *)table_r + entry_size * div_round (crv * (i-128), 76309);
c->table_gU[i] = (uint8_t *)table_g + entry_size * div_round (cgu * (i-128), 76309);
c->table_gV[i] = entry_size * div_round (cgv * (i-128), 76309);
c->table_bU[i] = (uint8_t *)table_b + entry_size * div_round (cbu * (i-128), 76309);
}
av_free(c->yuvTable);
c->yuvTable= table_start;
return 0;
}