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/*
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 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/*
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  supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8
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  supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09
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  {BGR,RGB}{1,4,8,15,16} support dithering
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  unscaled special converters (YV12=I420=IYUV, Y800=Y8)
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  YV12 -> {BGR,RGB}{1,4,8,12,15,16,24,32}
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  x -> x
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  YUV9 -> YV12
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  YUV9/YV12 -> Y800
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  Y800 -> YUV9/YV12
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  BGR24 -> BGR32 & RGB24 -> RGB32
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  BGR32 -> BGR24 & RGB32 -> RGB24
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  BGR15 -> BGR16
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*/
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/*
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tested special converters (most are tested actually, but I did not write it down ...)
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 YV12 -> BGR12/BGR16
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 YV12 -> YV12
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 BGR15 -> BGR16
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 BGR16 -> BGR16
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 YVU9 -> YV12
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untested special converters
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  YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be OK)
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  YV12/I420 -> YV12/I420
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  YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format
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  BGR24 -> BGR32 & RGB24 -> RGB32
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  BGR32 -> BGR24 & RGB32 -> RGB24
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  BGR24 -> YV12
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*/
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#include <inttypes.h>
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#include <string.h>
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#include <math.h>
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#include <stdio.h>
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#include "config.h"
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#include <assert.h>
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#include "swscale.h"
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#include "swscale_internal.h"
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#include "rgb2rgb.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/x86_cpu.h"
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#include "libavutil/avutil.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/bswap.h"
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#include "libavutil/pixdesc.h"
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#undef MOVNTQ
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#undef PAVGB
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//#undef HAVE_MMX2
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//#define HAVE_AMD3DNOW
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//#undef HAVE_MMX
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//#undef ARCH_X86
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#define DITHER1XBPP
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#define FAST_BGR2YV12 // use 7 bit coefficients instead of 15 bit
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#define isPacked(x)         (       \
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           (x)==PIX_FMT_PAL8        \
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        || (x)==PIX_FMT_YUYV422     \
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        || (x)==PIX_FMT_UYVY422     \
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        || (x)==PIX_FMT_Y400A       \
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        || isAnyRGB(x)              \
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    )
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#define RGB2YUV_SHIFT 15
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#define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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#define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))
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static const double rgb2yuv_table[8][9]={
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    {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709
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    {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
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    {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
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    {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M
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    {0.701 , 0.087 , 0.212 , -0.384, 0.5, -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M
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};
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/*
112
NOTES
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Special versions: fast Y 1:1 scaling (no interpolation in y direction)
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TODO
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more intelligent misalignment avoidance for the horizontal scaler
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write special vertical cubic upscale version
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optimize C code (YV12 / minmax)
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add support for packed pixel YUV input & output
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add support for Y8 output
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optimize BGR24 & BGR32
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add BGR4 output support
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write special BGR->BGR scaler
124
*/
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#if ARCH_X86
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DECLARE_ASM_CONST(8, uint64_t, bF8)=       0xF8F8F8F8F8F8F8F8LL;
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DECLARE_ASM_CONST(8, uint64_t, bFC)=       0xFCFCFCFCFCFCFCFCLL;
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DECLARE_ASM_CONST(8, uint64_t, w10)=       0x0010001000100010LL;
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DECLARE_ASM_CONST(8, uint64_t, w02)=       0x0002000200020002LL;
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DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;
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DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;
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DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;
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DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;
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const DECLARE_ALIGNED(8, uint64_t, ff_dither4)[2] = {
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        0x0103010301030103LL,
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        0x0200020002000200LL,};
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const DECLARE_ALIGNED(8, uint64_t, ff_dither8)[2] = {
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        0x0602060206020602LL,
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        0x0004000400040004LL,};
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DECLARE_ASM_CONST(8, uint64_t, b16Mask)=   0x001F001F001F001FLL;
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DECLARE_ASM_CONST(8, uint64_t, g16Mask)=   0x07E007E007E007E0LL;
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DECLARE_ASM_CONST(8, uint64_t, r16Mask)=   0xF800F800F800F800LL;
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DECLARE_ASM_CONST(8, uint64_t, b15Mask)=   0x001F001F001F001FLL;
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DECLARE_ASM_CONST(8, uint64_t, g15Mask)=   0x03E003E003E003E0LL;
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DECLARE_ASM_CONST(8, uint64_t, r15Mask)=   0x7C007C007C007C00LL;
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DECLARE_ALIGNED(8, const uint64_t, ff_M24A)         = 0x00FF0000FF0000FFLL;
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DECLARE_ALIGNED(8, const uint64_t, ff_M24B)         = 0xFF0000FF0000FF00LL;
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DECLARE_ALIGNED(8, const uint64_t, ff_M24C)         = 0x0000FF0000FF0000LL;
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#ifdef FAST_BGR2YV12
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000000210041000DULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000FFEEFFDC0038ULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00000038FFD2FFF8ULL;
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#else
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000020E540830C8BULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000ED0FDAC23831ULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00003831D0E6F6EAULL;
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#endif /* FAST_BGR2YV12 */
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset)  = 0x1010101010101010ULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;
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DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;
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DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;
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DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;
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DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;
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DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;
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DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;
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174
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV)[2][4] = {
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    {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},
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    {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},
177
};
178

    
179
DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;
180

    
181
#endif /* ARCH_X86 */
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DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4)[2][8]={
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{  1,   3,   1,   3,   1,   3,   1,   3, },
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{  2,   0,   2,   0,   2,   0,   2,   0, },
186
};
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188
DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8)[2][8]={
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{  6,   2,   6,   2,   6,   2,   6,   2, },
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{  0,   4,   0,   4,   0,   4,   0,   4, },
191
};
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193
DECLARE_ALIGNED(8, const uint8_t, dither_4x4_16)[4][8]={
194
{  8,   4,  11,   7,   8,   4,  11,   7, },
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{  2,  14,   1,  13,   2,  14,   1,  13, },
196
{ 10,   6,   9,   5,  10,   6,   9,   5, },
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{  0,  12,   3,  15,   0,  12,   3,  15, },
198
};
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200
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32)[8][8]={
201
{ 17,   9,  23,  15,  16,   8,  22,  14, },
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{  5,  29,   3,  27,   4,  28,   2,  26, },
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{ 21,  13,  19,  11,  20,  12,  18,  10, },
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{  0,  24,   6,  30,   1,  25,   7,  31, },
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{ 16,   8,  22,  14,  17,   9,  23,  15, },
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{  4,  28,   2,  26,   5,  29,   3,  27, },
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{ 20,  12,  18,  10,  21,  13,  19,  11, },
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{  1,  25,   7,  31,   0,  24,   6,  30, },
209
};
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73)[8][8]={
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{  0,  55,  14,  68,   3,  58,  17,  72, },
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{ 37,  18,  50,  32,  40,  22,  54,  35, },
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{  9,  64,   5,  59,  13,  67,   8,  63, },
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{ 46,  27,  41,  23,  49,  31,  44,  26, },
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{  2,  57,  16,  71,   1,  56,  15,  70, },
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{ 39,  21,  52,  34,  38,  19,  51,  33, },
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{ 11,  66,   7,  62,  10,  65,   6,  60, },
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{ 48,  30,  43,  25,  47,  29,  42,  24, },
220
};
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#if 1
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DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
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{117,  62, 158, 103, 113,  58, 155, 100, },
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{ 34, 199,  21, 186,  31, 196,  17, 182, },
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{144,  89, 131,  76, 141,  86, 127,  72, },
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{  0, 165,  41, 206,  10, 175,  52, 217, },
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{110,  55, 151,  96, 120,  65, 162, 107, },
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{ 28, 193,  14, 179,  38, 203,  24, 189, },
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{138,  83, 124,  69, 148,  93, 134,  79, },
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{  7, 172,  48, 213,   3, 168,  45, 210, },
232
};
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#elif 1
234
// tries to correct a gamma of 1.5
235
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
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{  0, 143,  18, 200,   2, 156,  25, 215, },
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{ 78,  28, 125,  64,  89,  36, 138,  74, },
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{ 10, 180,   3, 161,  16, 195,   8, 175, },
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{109,  51,  93,  38, 121,  60, 105,  47, },
240
{  1, 152,  23, 210,   0, 147,  20, 205, },
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{ 85,  33, 134,  71,  81,  30, 130,  67, },
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{ 14, 190,   6, 171,  12, 185,   5, 166, },
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{117,  57, 101,  44, 113,  54,  97,  41, },
244
};
245
#elif 1
246
// tries to correct a gamma of 2.0
247
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
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{  0, 124,   8, 193,   0, 140,  12, 213, },
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{ 55,  14, 104,  42,  66,  19, 119,  52, },
250
{  3, 168,   1, 145,   6, 187,   3, 162, },
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{ 86,  31,  70,  21,  99,  39,  82,  28, },
252
{  0, 134,  11, 206,   0, 129,   9, 200, },
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{ 62,  17, 114,  48,  58,  16, 109,  45, },
254
{  5, 181,   2, 157,   4, 175,   1, 151, },
255
{ 95,  36,  78,  26,  90,  34,  74,  24, },
256
};
257
#else
258
// tries to correct a gamma of 2.5
259
DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
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{  0, 107,   3, 187,   0, 125,   6, 212, },
261
{ 39,   7,  86,  28,  49,  11, 102,  36, },
262
{  1, 158,   0, 131,   3, 180,   1, 151, },
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{ 68,  19,  52,  12,  81,  25,  64,  17, },
264
{  0, 119,   5, 203,   0, 113,   4, 195, },
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{ 45,   9,  96,  33,  42,   8,  91,  30, },
266
{  2, 172,   1, 144,   2, 165,   0, 137, },
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{ 77,  23,  60,  15,  72,  21,  56,  14, },
268
};
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#endif
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271
static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
272
                                                    const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
273
                                                    const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,
274
                                                    int dstW, int chrDstW, int big_endian)
275
{
276
    //FIXME Optimize (just quickly written not optimized..)
277
    int i;
278

    
279
    for (i = 0; i < dstW; i++) {
280
        int val = 1 << 10;
281
        int j;
282

    
283
        for (j = 0; j < lumFilterSize; j++)
284
            val += lumSrc[j][i] * lumFilter[j];
285

    
286
        if (big_endian) {
287
            AV_WB16(&dest[i], av_clip_uint16(val >> 11));
288
        } else {
289
            AV_WL16(&dest[i], av_clip_uint16(val >> 11));
290
        }
291
    }
292

    
293
    if (uDest) {
294
        for (i = 0; i < chrDstW; i++) {
295
            int u = 1 << 10;
296
            int v = 1 << 10;
297
            int j;
298

    
299
            for (j = 0; j < chrFilterSize; j++) {
300
                u += chrSrc[j][i       ] * chrFilter[j];
301
                v += chrSrc[j][i + VOFW] * chrFilter[j];
302
            }
303

    
304
            if (big_endian) {
305
                AV_WB16(&uDest[i], av_clip_uint16(u >> 11));
306
                AV_WB16(&vDest[i], av_clip_uint16(v >> 11));
307
            } else {
308
                AV_WL16(&uDest[i], av_clip_uint16(u >> 11));
309
                AV_WL16(&vDest[i], av_clip_uint16(v >> 11));
310
            }
311
        }
312
    }
313

    
314
    if (CONFIG_SWSCALE_ALPHA && aDest) {
315
        for (i = 0; i < dstW; i++) {
316
            int val = 1 << 10;
317
            int j;
318

    
319
            for (j = 0; j < lumFilterSize; j++)
320
                val += alpSrc[j][i] * lumFilter[j];
321

    
322
            if (big_endian) {
323
                AV_WB16(&aDest[i], av_clip_uint16(val >> 11));
324
            } else {
325
                AV_WL16(&aDest[i], av_clip_uint16(val >> 11));
326
            }
327
        }
328
    }
329
}
330

    
331
static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
332
                                 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
333
                                 const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,
334
                                 enum PixelFormat dstFormat)
335
{
336
    if (isBE(dstFormat)) {
337
        yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
338
                               chrFilter, chrSrc, chrFilterSize,
339
                               alpSrc,
340
                               dest, uDest, vDest, aDest,
341
                               dstW, chrDstW, 1);
342
    } else {
343
        yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
344
                               chrFilter, chrSrc, chrFilterSize,
345
                               alpSrc,
346
                               dest, uDest, vDest, aDest,
347
                               dstW, chrDstW, 0);
348
    }
349
}
350

    
351
static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
352
                               const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
353
                               const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)
354
{
355
    //FIXME Optimize (just quickly written not optimized..)
356
    int i;
357
    for (i=0; i<dstW; i++) {
358
        int val=1<<18;
359
        int j;
360
        for (j=0; j<lumFilterSize; j++)
361
            val += lumSrc[j][i] * lumFilter[j];
362

    
363
        dest[i]= av_clip_uint8(val>>19);
364
    }
365

    
366
    if (uDest)
367
        for (i=0; i<chrDstW; i++) {
368
            int u=1<<18;
369
            int v=1<<18;
370
            int j;
371
            for (j=0; j<chrFilterSize; j++) {
372
                u += chrSrc[j][i] * chrFilter[j];
373
                v += chrSrc[j][i + VOFW] * chrFilter[j];
374
            }
375

    
376
            uDest[i]= av_clip_uint8(u>>19);
377
            vDest[i]= av_clip_uint8(v>>19);
378
        }
379

    
380
    if (CONFIG_SWSCALE_ALPHA && aDest)
381
        for (i=0; i<dstW; i++) {
382
            int val=1<<18;
383
            int j;
384
            for (j=0; j<lumFilterSize; j++)
385
                val += alpSrc[j][i] * lumFilter[j];
386

    
387
            aDest[i]= av_clip_uint8(val>>19);
388
        }
389

    
390
}
391

    
392
static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
393
                                const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
394
                                uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)
395
{
396
    //FIXME Optimize (just quickly written not optimized..)
397
    int i;
398
    for (i=0; i<dstW; i++) {
399
        int val=1<<18;
400
        int j;
401
        for (j=0; j<lumFilterSize; j++)
402
            val += lumSrc[j][i] * lumFilter[j];
403

    
404
        dest[i]= av_clip_uint8(val>>19);
405
    }
406

    
407
    if (!uDest)
408
        return;
409

    
410
    if (dstFormat == PIX_FMT_NV12)
411
        for (i=0; i<chrDstW; i++) {
412
            int u=1<<18;
413
            int v=1<<18;
414
            int j;
415
            for (j=0; j<chrFilterSize; j++) {
416
                u += chrSrc[j][i] * chrFilter[j];
417
                v += chrSrc[j][i + VOFW] * chrFilter[j];
418
            }
419

    
420
            uDest[2*i]= av_clip_uint8(u>>19);
421
            uDest[2*i+1]= av_clip_uint8(v>>19);
422
        }
423
    else
424
        for (i=0; i<chrDstW; i++) {
425
            int u=1<<18;
426
            int v=1<<18;
427
            int j;
428
            for (j=0; j<chrFilterSize; j++) {
429
                u += chrSrc[j][i] * chrFilter[j];
430
                v += chrSrc[j][i + VOFW] * chrFilter[j];
431
            }
432

    
433
            uDest[2*i]= av_clip_uint8(v>>19);
434
            uDest[2*i+1]= av_clip_uint8(u>>19);
435
        }
436
}
437

    
438
#define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \
439
    for (i=0; i<(dstW>>1); i++) {\
440
        int j;\
441
        int Y1 = 1<<18;\
442
        int Y2 = 1<<18;\
443
        int U  = 1<<18;\
444
        int V  = 1<<18;\
445
        int av_unused A1, A2;\
446
        type av_unused *r, *b, *g;\
447
        const int i2= 2*i;\
448
        \
449
        for (j=0; j<lumFilterSize; j++) {\
450
            Y1 += lumSrc[j][i2] * lumFilter[j];\
451
            Y2 += lumSrc[j][i2+1] * lumFilter[j];\
452
        }\
453
        for (j=0; j<chrFilterSize; j++) {\
454
            U += chrSrc[j][i] * chrFilter[j];\
455
            V += chrSrc[j][i+VOFW] * chrFilter[j];\
456
        }\
457
        Y1>>=19;\
458
        Y2>>=19;\
459
        U >>=19;\
460
        V >>=19;\
461
        if (alpha) {\
462
            A1 = 1<<18;\
463
            A2 = 1<<18;\
464
            for (j=0; j<lumFilterSize; j++) {\
465
                A1 += alpSrc[j][i2  ] * lumFilter[j];\
466
                A2 += alpSrc[j][i2+1] * lumFilter[j];\
467
            }\
468
            A1>>=19;\
469
            A2>>=19;\
470
        }
471

    
472
#define YSCALE_YUV_2_PACKEDX_C(type,alpha) \
473
        YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\
474
        if ((Y1|Y2|U|V)&256) {\
475
            if (Y1>255)   Y1=255; \
476
            else if (Y1<0)Y1=0;   \
477
            if (Y2>255)   Y2=255; \
478
            else if (Y2<0)Y2=0;   \
479
            if (U>255)    U=255;  \
480
            else if (U<0) U=0;    \
481
            if (V>255)    V=255;  \
482
            else if (V<0) V=0;    \
483
        }\
484
        if (alpha && ((A1|A2)&256)) {\
485
            A1=av_clip_uint8(A1);\
486
            A2=av_clip_uint8(A2);\
487
        }
488

    
489
#define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \
490
    for (i=0; i<dstW; i++) {\
491
        int j;\
492
        int Y = 0;\
493
        int U = -128<<19;\
494
        int V = -128<<19;\
495
        int av_unused A;\
496
        int R,G,B;\
497
        \
498
        for (j=0; j<lumFilterSize; j++) {\
499
            Y += lumSrc[j][i     ] * lumFilter[j];\
500
        }\
501
        for (j=0; j<chrFilterSize; j++) {\
502
            U += chrSrc[j][i     ] * chrFilter[j];\
503
            V += chrSrc[j][i+VOFW] * chrFilter[j];\
504
        }\
505
        Y >>=10;\
506
        U >>=10;\
507
        V >>=10;\
508
        if (alpha) {\
509
            A = rnd;\
510
            for (j=0; j<lumFilterSize; j++)\
511
                A += alpSrc[j][i     ] * lumFilter[j];\
512
            A >>=19;\
513
            if (A&256)\
514
                A = av_clip_uint8(A);\
515
        }
516

    
517
#define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \
518
    YSCALE_YUV_2_PACKEDX_FULL_C(rnd>>3,alpha)\
519
        Y-= c->yuv2rgb_y_offset;\
520
        Y*= c->yuv2rgb_y_coeff;\
521
        Y+= rnd;\
522
        R= Y + V*c->yuv2rgb_v2r_coeff;\
523
        G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\
524
        B= Y +                          U*c->yuv2rgb_u2b_coeff;\
525
        if ((R|G|B)&(0xC0000000)) {\
526
            if (R>=(256<<22))   R=(256<<22)-1; \
527
            else if (R<0)R=0;   \
528
            if (G>=(256<<22))   G=(256<<22)-1; \
529
            else if (G<0)G=0;   \
530
            if (B>=(256<<22))   B=(256<<22)-1; \
531
            else if (B<0)B=0;   \
532
        }
533

    
534
#define YSCALE_YUV_2_GRAY16_C \
535
    for (i=0; i<(dstW>>1); i++) {\
536
        int j;\
537
        int Y1 = 1<<18;\
538
        int Y2 = 1<<18;\
539
        int U  = 1<<18;\
540
        int V  = 1<<18;\
541
        \
542
        const int i2= 2*i;\
543
        \
544
        for (j=0; j<lumFilterSize; j++) {\
545
            Y1 += lumSrc[j][i2] * lumFilter[j];\
546
            Y2 += lumSrc[j][i2+1] * lumFilter[j];\
547
        }\
548
        Y1>>=11;\
549
        Y2>>=11;\
550
        if ((Y1|Y2|U|V)&65536) {\
551
            if (Y1>65535)   Y1=65535; \
552
            else if (Y1<0)Y1=0;   \
553
            if (Y2>65535)   Y2=65535; \
554
            else if (Y2<0)Y2=0;   \
555
        }
556

    
557
#define YSCALE_YUV_2_RGBX_C(type,alpha) \
558
    YSCALE_YUV_2_PACKEDX_C(type,alpha)  /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\
559
    r = (type *)c->table_rV[V];   \
560
    g = (type *)(c->table_gU[U] + c->table_gV[V]); \
561
    b = (type *)c->table_bU[U];
562

    
563
#define YSCALE_YUV_2_PACKED2_C(type,alpha)   \
564
    for (i=0; i<(dstW>>1); i++) { \
565
        const int i2= 2*i;       \
566
        int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;           \
567
        int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;           \
568
        int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;  \
569
        int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19;  \
570
        type av_unused *r, *b, *g;                                    \
571
        int av_unused A1, A2;                                         \
572
        if (alpha) {\
573
            A1= (abuf0[i2  ]*yalpha1+abuf1[i2  ]*yalpha)>>19;         \
574
            A2= (abuf0[i2+1]*yalpha1+abuf1[i2+1]*yalpha)>>19;         \
575
        }
576

    
577
#define YSCALE_YUV_2_GRAY16_2_C   \
578
    for (i=0; i<(dstW>>1); i++) { \
579
        const int i2= 2*i;       \
580
        int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>11;           \
581
        int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;
582

    
583
#define YSCALE_YUV_2_RGB2_C(type,alpha) \
584
    YSCALE_YUV_2_PACKED2_C(type,alpha)\
585
    r = (type *)c->table_rV[V];\
586
    g = (type *)(c->table_gU[U] + c->table_gV[V]);\
587
    b = (type *)c->table_bU[U];
588

    
589
#define YSCALE_YUV_2_PACKED1_C(type,alpha) \
590
    for (i=0; i<(dstW>>1); i++) {\
591
        const int i2= 2*i;\
592
        int Y1= buf0[i2  ]>>7;\
593
        int Y2= buf0[i2+1]>>7;\
594
        int U= (uvbuf1[i     ])>>7;\
595
        int V= (uvbuf1[i+VOFW])>>7;\
596
        type av_unused *r, *b, *g;\
597
        int av_unused A1, A2;\
598
        if (alpha) {\
599
            A1= abuf0[i2  ]>>7;\
600
            A2= abuf0[i2+1]>>7;\
601
        }
602

    
603
#define YSCALE_YUV_2_GRAY16_1_C \
604
    for (i=0; i<(dstW>>1); i++) {\
605
        const int i2= 2*i;\
606
        int Y1= buf0[i2  ]<<1;\
607
        int Y2= buf0[i2+1]<<1;
608

    
609
#define YSCALE_YUV_2_RGB1_C(type,alpha) \
610
    YSCALE_YUV_2_PACKED1_C(type,alpha)\
611
    r = (type *)c->table_rV[V];\
612
    g = (type *)(c->table_gU[U] + c->table_gV[V]);\
613
    b = (type *)c->table_bU[U];
614

    
615
#define YSCALE_YUV_2_PACKED1B_C(type,alpha) \
616
    for (i=0; i<(dstW>>1); i++) {\
617
        const int i2= 2*i;\
618
        int Y1= buf0[i2  ]>>7;\
619
        int Y2= buf0[i2+1]>>7;\
620
        int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\
621
        int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\
622
        type av_unused *r, *b, *g;\
623
        int av_unused A1, A2;\
624
        if (alpha) {\
625
            A1= abuf0[i2  ]>>7;\
626
            A2= abuf0[i2+1]>>7;\
627
        }
628

    
629
#define YSCALE_YUV_2_RGB1B_C(type,alpha) \
630
    YSCALE_YUV_2_PACKED1B_C(type,alpha)\
631
    r = (type *)c->table_rV[V];\
632
    g = (type *)(c->table_gU[U] + c->table_gV[V]);\
633
    b = (type *)c->table_bU[U];
634

    
635
#define YSCALE_YUV_2_MONO2_C \
636
    const uint8_t * const d128=dither_8x8_220[y&7];\
637
    uint8_t *g= c->table_gU[128] + c->table_gV[128];\
638
    for (i=0; i<dstW-7; i+=8) {\
639
        int acc;\
640
        acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\
641
        acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
642
        acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
643
        acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
644
        acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
645
        acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
646
        acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
647
        acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
648
        ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
649
        dest++;\
650
    }
651

    
652
#define YSCALE_YUV_2_MONOX_C \
653
    const uint8_t * const d128=dither_8x8_220[y&7];\
654
    uint8_t *g= c->table_gU[128] + c->table_gV[128];\
655
    int acc=0;\
656
    for (i=0; i<dstW-1; i+=2) {\
657
        int j;\
658
        int Y1=1<<18;\
659
        int Y2=1<<18;\
660
\
661
        for (j=0; j<lumFilterSize; j++) {\
662
            Y1 += lumSrc[j][i] * lumFilter[j];\
663
            Y2 += lumSrc[j][i+1] * lumFilter[j];\
664
        }\
665
        Y1>>=19;\
666
        Y2>>=19;\
667
        if ((Y1|Y2)&256) {\
668
            if (Y1>255)   Y1=255;\
669
            else if (Y1<0)Y1=0;\
670
            if (Y2>255)   Y2=255;\
671
            else if (Y2<0)Y2=0;\
672
        }\
673
        acc+= acc + g[Y1+d128[(i+0)&7]];\
674
        acc+= acc + g[Y2+d128[(i+1)&7]];\
675
        if ((i&7)==6) {\
676
            ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\
677
            dest++;\
678
        }\
679
    }
680

    
681
#define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\
682
    switch(c->dstFormat) {\
683
    case PIX_FMT_RGB48BE:\
684
    case PIX_FMT_RGB48LE:\
685
        func(uint8_t,0)\
686
            ((uint8_t*)dest)[ 0]= r[Y1];\
687
            ((uint8_t*)dest)[ 1]= r[Y1];\
688
            ((uint8_t*)dest)[ 2]= g[Y1];\
689
            ((uint8_t*)dest)[ 3]= g[Y1];\
690
            ((uint8_t*)dest)[ 4]= b[Y1];\
691
            ((uint8_t*)dest)[ 5]= b[Y1];\
692
            ((uint8_t*)dest)[ 6]= r[Y2];\
693
            ((uint8_t*)dest)[ 7]= r[Y2];\
694
            ((uint8_t*)dest)[ 8]= g[Y2];\
695
            ((uint8_t*)dest)[ 9]= g[Y2];\
696
            ((uint8_t*)dest)[10]= b[Y2];\
697
            ((uint8_t*)dest)[11]= b[Y2];\
698
            dest+=12;\
699
        }\
700
        break;\
701
    case PIX_FMT_RGBA:\
702
    case PIX_FMT_BGRA:\
703
        if (CONFIG_SMALL) {\
704
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\
705
            func(uint32_t,needAlpha)\
706
                ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? (A1<<24) : 0);\
707
                ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? (A2<<24) : 0);\
708
            }\
709
        } else {\
710
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\
711
                func(uint32_t,1)\
712
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (A1<<24);\
713
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (A2<<24);\
714
                }\
715
            } else {\
716
                func(uint32_t,0)\
717
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
718
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
719
                }\
720
            }\
721
        }\
722
        break;\
723
    case PIX_FMT_ARGB:\
724
    case PIX_FMT_ABGR:\
725
        if (CONFIG_SMALL) {\
726
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\
727
            func(uint32_t,needAlpha)\
728
                ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? A1 : 0);\
729
                ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? A2 : 0);\
730
            }\
731
        } else {\
732
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\
733
                func(uint32_t,1)\
734
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + A1;\
735
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + A2;\
736
                }\
737
            } else {\
738
                func(uint32_t,0)\
739
                    ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
740
                    ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
741
                }\
742
            }\
743
        }                \
744
        break;\
745
    case PIX_FMT_RGB24:\
746
        func(uint8_t,0)\
747
            ((uint8_t*)dest)[0]= r[Y1];\
748
            ((uint8_t*)dest)[1]= g[Y1];\
749
            ((uint8_t*)dest)[2]= b[Y1];\
750
            ((uint8_t*)dest)[3]= r[Y2];\
751
            ((uint8_t*)dest)[4]= g[Y2];\
752
            ((uint8_t*)dest)[5]= b[Y2];\
753
            dest+=6;\
754
        }\
755
        break;\
756
    case PIX_FMT_BGR24:\
757
        func(uint8_t,0)\
758
            ((uint8_t*)dest)[0]= b[Y1];\
759
            ((uint8_t*)dest)[1]= g[Y1];\
760
            ((uint8_t*)dest)[2]= r[Y1];\
761
            ((uint8_t*)dest)[3]= b[Y2];\
762
            ((uint8_t*)dest)[4]= g[Y2];\
763
            ((uint8_t*)dest)[5]= r[Y2];\
764
            dest+=6;\
765
        }\
766
        break;\
767
    case PIX_FMT_RGB565BE:\
768
    case PIX_FMT_RGB565LE:\
769
    case PIX_FMT_BGR565BE:\
770
    case PIX_FMT_BGR565LE:\
771
        {\
772
            const int dr1= dither_2x2_8[y&1    ][0];\
773
            const int dg1= dither_2x2_4[y&1    ][0];\
774
            const int db1= dither_2x2_8[(y&1)^1][0];\
775
            const int dr2= dither_2x2_8[y&1    ][1];\
776
            const int dg2= dither_2x2_4[y&1    ][1];\
777
            const int db2= dither_2x2_8[(y&1)^1][1];\
778
            func(uint16_t,0)\
779
                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
780
                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
781
            }\
782
        }\
783
        break;\
784
    case PIX_FMT_RGB555BE:\
785
    case PIX_FMT_RGB555LE:\
786
    case PIX_FMT_BGR555BE:\
787
    case PIX_FMT_BGR555LE:\
788
        {\
789
            const int dr1= dither_2x2_8[y&1    ][0];\
790
            const int dg1= dither_2x2_8[y&1    ][1];\
791
            const int db1= dither_2x2_8[(y&1)^1][0];\
792
            const int dr2= dither_2x2_8[y&1    ][1];\
793
            const int dg2= dither_2x2_8[y&1    ][0];\
794
            const int db2= dither_2x2_8[(y&1)^1][1];\
795
            func(uint16_t,0)\
796
                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
797
                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
798
            }\
799
        }\
800
        break;\
801
    case PIX_FMT_RGB444BE:\
802
    case PIX_FMT_RGB444LE:\
803
    case PIX_FMT_BGR444BE:\
804
    case PIX_FMT_BGR444LE:\
805
        {\
806
            const int dr1= dither_4x4_16[y&3    ][0];\
807
            const int dg1= dither_4x4_16[y&3    ][1];\
808
            const int db1= dither_4x4_16[(y&3)^3][0];\
809
            const int dr2= dither_4x4_16[y&3    ][1];\
810
            const int dg2= dither_4x4_16[y&3    ][0];\
811
            const int db2= dither_4x4_16[(y&3)^3][1];\
812
            func(uint16_t,0)\
813
                ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
814
                ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
815
            }\
816
        }\
817
        break;\
818
    case PIX_FMT_RGB8:\
819
    case PIX_FMT_BGR8:\
820
        {\
821
            const uint8_t * const d64= dither_8x8_73[y&7];\
822
            const uint8_t * const d32= dither_8x8_32[y&7];\
823
            func(uint8_t,0)\
824
                ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
825
                ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
826
            }\
827
        }\
828
        break;\
829
    case PIX_FMT_RGB4:\
830
    case PIX_FMT_BGR4:\
831
        {\
832
            const uint8_t * const d64= dither_8x8_73 [y&7];\
833
            const uint8_t * const d128=dither_8x8_220[y&7];\
834
            func(uint8_t,0)\
835
                ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
836
                                 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
837
            }\
838
        }\
839
        break;\
840
    case PIX_FMT_RGB4_BYTE:\
841
    case PIX_FMT_BGR4_BYTE:\
842
        {\
843
            const uint8_t * const d64= dither_8x8_73 [y&7];\
844
            const uint8_t * const d128=dither_8x8_220[y&7];\
845
            func(uint8_t,0)\
846
                ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
847
                ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
848
            }\
849
        }\
850
        break;\
851
    case PIX_FMT_MONOBLACK:\
852
    case PIX_FMT_MONOWHITE:\
853
        {\
854
            func_monoblack\
855
        }\
856
        break;\
857
    case PIX_FMT_YUYV422:\
858
        func2\
859
            ((uint8_t*)dest)[2*i2+0]= Y1;\
860
            ((uint8_t*)dest)[2*i2+1]= U;\
861
            ((uint8_t*)dest)[2*i2+2]= Y2;\
862
            ((uint8_t*)dest)[2*i2+3]= V;\
863
        }                \
864
        break;\
865
    case PIX_FMT_UYVY422:\
866
        func2\
867
            ((uint8_t*)dest)[2*i2+0]= U;\
868
            ((uint8_t*)dest)[2*i2+1]= Y1;\
869
            ((uint8_t*)dest)[2*i2+2]= V;\
870
            ((uint8_t*)dest)[2*i2+3]= Y2;\
871
        }                \
872
        break;\
873
    case PIX_FMT_GRAY16BE:\
874
        func_g16\
875
            ((uint8_t*)dest)[2*i2+0]= Y1>>8;\
876
            ((uint8_t*)dest)[2*i2+1]= Y1;\
877
            ((uint8_t*)dest)[2*i2+2]= Y2>>8;\
878
            ((uint8_t*)dest)[2*i2+3]= Y2;\
879
        }                \
880
        break;\
881
    case PIX_FMT_GRAY16LE:\
882
        func_g16\
883
            ((uint8_t*)dest)[2*i2+0]= Y1;\
884
            ((uint8_t*)dest)[2*i2+1]= Y1>>8;\
885
            ((uint8_t*)dest)[2*i2+2]= Y2;\
886
            ((uint8_t*)dest)[2*i2+3]= Y2>>8;\
887
        }                \
888
        break;\
889
    }
890

    
891
static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
892
                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
893
                                  const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
894
{
895
    int i;
896
    YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)
897
}
898

    
899
static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
900
                                    const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
901
                                    const int16_t **alpSrc, uint8_t *dest, int dstW, int y)
902
{
903
    int i;
904
    int step= c->dstFormatBpp/8;
905
    int aidx= 3;
906

    
907
    switch(c->dstFormat) {
908
    case PIX_FMT_ARGB:
909
        dest++;
910
        aidx= 0;
911
    case PIX_FMT_RGB24:
912
        aidx--;
913
    case PIX_FMT_RGBA:
914
        if (CONFIG_SMALL) {
915
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;
916
            YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)
917
                dest[aidx]= needAlpha ? A : 255;
918
                dest[0]= R>>22;
919
                dest[1]= G>>22;
920
                dest[2]= B>>22;
921
                dest+= step;
922
            }
923
        } else {
924
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
925
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)
926
                    dest[aidx]= A;
927
                    dest[0]= R>>22;
928
                    dest[1]= G>>22;
929
                    dest[2]= B>>22;
930
                    dest+= step;
931
                }
932
            } else {
933
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)
934
                    dest[aidx]= 255;
935
                    dest[0]= R>>22;
936
                    dest[1]= G>>22;
937
                    dest[2]= B>>22;
938
                    dest+= step;
939
                }
940
            }
941
        }
942
        break;
943
    case PIX_FMT_ABGR:
944
        dest++;
945
        aidx= 0;
946
    case PIX_FMT_BGR24:
947
        aidx--;
948
    case PIX_FMT_BGRA:
949
        if (CONFIG_SMALL) {
950
            int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;
951
            YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)
952
                dest[aidx]= needAlpha ? A : 255;
953
                dest[0]= B>>22;
954
                dest[1]= G>>22;
955
                dest[2]= R>>22;
956
                dest+= step;
957
            }
958
        } else {
959
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
960
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)
961
                    dest[aidx]= A;
962
                    dest[0]= B>>22;
963
                    dest[1]= G>>22;
964
                    dest[2]= R>>22;
965
                    dest+= step;
966
                }
967
            } else {
968
                YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)
969
                    dest[aidx]= 255;
970
                    dest[0]= B>>22;
971
                    dest[1]= G>>22;
972
                    dest[2]= R>>22;
973
                    dest+= step;
974
                }
975
            }
976
        }
977
        break;
978
    default:
979
        assert(0);
980
    }
981
}
982

    
983
static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)
984
{
985
    int i;
986
    uint8_t *ptr = plane + stride*y;
987
    for (i=0; i<height; i++) {
988
        memset(ptr, val, width);
989
        ptr += stride;
990
    }
991
}
992

    
993
static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, long width,
994
                            uint32_t *unused)
995
{
996
    int i;
997
    for (i = 0; i < width; i++) {
998
        int r = src[i*6+0];
999
        int g = src[i*6+2];
1000
        int b = src[i*6+4];
1001

    
1002
        dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
1003
    }
1004
}
1005

    
1006
static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,
1007
                             const uint8_t *src1, const uint8_t *src2,
1008
                             long width, uint32_t *unused)
1009
{
1010
    int i;
1011
    assert(src1==src2);
1012
    for (i = 0; i < width; i++) {
1013
        int r = src1[6*i + 0];
1014
        int g = src1[6*i + 2];
1015
        int b = src1[6*i + 4];
1016

    
1017
        dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
1018
        dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
1019
    }
1020
}
1021

    
1022
static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,
1023
                                  const uint8_t *src1, const uint8_t *src2,
1024
                                  long width, uint32_t *unused)
1025
{
1026
    int i;
1027
    assert(src1==src2);
1028
    for (i = 0; i < width; i++) {
1029
        int r= src1[12*i + 0] + src1[12*i + 6];
1030
        int g= src1[12*i + 2] + src1[12*i + 8];
1031
        int b= src1[12*i + 4] + src1[12*i + 10];
1032

    
1033
        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
1034
        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
1035
    }
1036
}
1037

    
1038
#define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\
1039
static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\
1040
{\
1041
    int i;\
1042
    for (i=0; i<width; i++) {\
1043
        int b= (((const type*)src)[i]>>shb)&maskb;\
1044
        int g= (((const type*)src)[i]>>shg)&maskg;\
1045
        int r= (((const type*)src)[i]>>shr)&maskr;\
1046
\
1047
        dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\
1048
    }\
1049
}
1050

    
1051
BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)
1052
BGR2Y(uint32_t,bgr321ToY,16,16, 0, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)
1053
BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)
1054
BGR2Y(uint32_t,rgb321ToY, 0,16,16, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)
1055
BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)
1056
BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)
1057
BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)
1058
BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)
1059

    
1060
static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1061
{
1062
    int i;
1063
    for (i=0; i<width; i++) {
1064
        dst[i]= src[4*i];
1065
    }
1066
}
1067

    
1068
#define BGR2UV(type, name, shr, shg, shb, shp, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S) \
1069
static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\
1070
{\
1071
    int i;\
1072
    for (i=0; i<width; i++) {\
1073
        int b= ((((const type*)src)[i]>>shp)&maskb)>>shb;\
1074
        int g= ((((const type*)src)[i]>>shp)&maskg)>>shg;\
1075
        int r= ((((const type*)src)[i]>>shp)&maskr)>>shr;\
1076
\
1077
        dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\
1078
        dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\
1079
    }\
1080
}\
1081
static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\
1082
{\
1083
    int i;\
1084
    for (i=0; i<width; i++) {\
1085
        int pix0= ((const type*)src)[2*i+0]>>shp;\
1086
        int pix1= ((const type*)src)[2*i+1]>>shp;\
1087
        int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\
1088
        int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\
1089
        int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\
1090
        g&= maskg|(2*maskg);\
1091
\
1092
        g>>=shg;\
1093
\
1094
        dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\
1095
        dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\
1096
    }\
1097
}
1098

    
1099
BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)
1100
BGR2UV(uint32_t,bgr321ToUV,16, 0, 0, 8, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)
1101
BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)
1102
BGR2UV(uint32_t,rgb321ToUV, 0, 0,16, 8,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)
1103
BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0, 0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)
1104
BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0, 0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)
1105
BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0, 0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)
1106
BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0, 0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)
1107

    
1108
static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)
1109
{
1110
    int i;
1111
    for (i=0; i<width; i++) {
1112
        int d= src[i];
1113

    
1114
        dst[i]= pal[d] & 0xFF;
1115
    }
1116
}
1117

    
1118
static inline void palToUV(uint8_t *dstU, uint8_t *dstV,
1119
                           const uint8_t *src1, const uint8_t *src2,
1120
                           long width, uint32_t *pal)
1121
{
1122
    int i;
1123
    assert(src1 == src2);
1124
    for (i=0; i<width; i++) {
1125
        int p= pal[src1[i]];
1126

    
1127
        dstU[i]= p>>8;
1128
        dstV[i]= p>>16;
1129
    }
1130
}
1131

    
1132
static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1133
{
1134
    int i, j;
1135
    for (i=0; i<width/8; i++) {
1136
        int d= ~src[i];
1137
        for(j=0; j<8; j++)
1138
            dst[8*i+j]= ((d>>(7-j))&1)*255;
1139
    }
1140
}
1141

    
1142
static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
1143
{
1144
    int i, j;
1145
    for (i=0; i<width/8; i++) {
1146
        int d= src[i];
1147
        for(j=0; j<8; j++)
1148
            dst[8*i+j]= ((d>>(7-j))&1)*255;
1149
    }
1150
}
1151

    
1152
//Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one
1153
//Plain C versions
1154
#if CONFIG_RUNTIME_CPUDETECT
1155
#  define COMPILE_C 1
1156
#  if   ARCH_X86
1157
#    define COMPILE_MMX     HAVE_MMX
1158
#    define COMPILE_MMX2    HAVE_MMX2
1159
#    define COMPILE_3DNOW   HAVE_AMD3DNOW
1160
#  elif ARCH_PPC
1161
#    define COMPILE_ALTIVEC HAVE_ALTIVEC
1162
#  endif
1163
#else /* CONFIG_RUNTIME_CPUDETECT */
1164
#  if   ARCH_X86
1165
#    if   HAVE_MMX2
1166
#      define COMPILE_MMX2  1
1167
#    elif HAVE_AMD3DNOW
1168
#      define COMPILE_3DNOW 1
1169
#    elif HAVE_MMX
1170
#      define COMPILE_MMX   1
1171
#    else
1172
#      define COMPILE_C     1
1173
#    endif
1174
#  elif ARCH_PPC && HAVE_ALTIVEC
1175
#    define COMPILE_ALTIVEC 1
1176
#  else
1177
#    define COMPILE_C       1
1178
#  endif
1179
#endif
1180

    
1181
#ifndef COMPILE_C
1182
#  define COMPILE_C 0
1183
#endif
1184
#ifndef COMPILE_MMX
1185
#  define COMPILE_MMX 0
1186
#endif
1187
#ifndef COMPILE_MMX2
1188
#  define COMPILE_MMX2 0
1189
#endif
1190
#ifndef COMPILE_3DNOW
1191
#  define COMPILE_3DNOW 0
1192
#endif
1193
#ifndef COMPILE_ALTIVEC
1194
#  define COMPILE_ALTIVEC 0
1195
#endif
1196

    
1197
#define COMPILE_TEMPLATE_MMX 0
1198
#define COMPILE_TEMPLATE_MMX2 0
1199
#define COMPILE_TEMPLATE_AMD3DNOW 0
1200
#define COMPILE_TEMPLATE_ALTIVEC 0
1201

    
1202
#if COMPILE_C
1203
#define RENAME(a) a ## _C
1204
#include "swscale_template.c"
1205
#endif
1206

    
1207
#if COMPILE_ALTIVEC
1208
#undef RENAME
1209
#undef COMPILE_TEMPLATE_ALTIVEC
1210
#define COMPILE_TEMPLATE_ALTIVEC 1
1211
#define RENAME(a) a ## _altivec
1212
#include "swscale_template.c"
1213
#endif
1214

    
1215
#if ARCH_X86
1216

    
1217
//MMX versions
1218
#if COMPILE_MMX
1219
#undef RENAME
1220
#undef COMPILE_TEMPLATE_MMX
1221
#undef COMPILE_TEMPLATE_MMX2
1222
#undef COMPILE_TEMPLATE_AMD3DNOW
1223
#define COMPILE_TEMPLATE_MMX 1
1224
#define COMPILE_TEMPLATE_MMX2 0
1225
#define COMPILE_TEMPLATE_AMD3DNOW 0
1226
#define RENAME(a) a ## _MMX
1227
#include "swscale_template.c"
1228
#endif
1229

    
1230
//MMX2 versions
1231
#if COMPILE_MMX2
1232
#undef RENAME
1233
#undef COMPILE_TEMPLATE_MMX
1234
#undef COMPILE_TEMPLATE_MMX2
1235
#undef COMPILE_TEMPLATE_AMD3DNOW
1236
#define COMPILE_TEMPLATE_MMX 1
1237
#define COMPILE_TEMPLATE_MMX2 1
1238
#define COMPILE_TEMPLATE_AMD3DNOW 0
1239
#define RENAME(a) a ## _MMX2
1240
#include "swscale_template.c"
1241
#endif
1242

    
1243
//3DNOW versions
1244
#if COMPILE_3DNOW
1245
#undef RENAME
1246
#undef COMPILE_TEMPLATE_MMX
1247
#undef COMPILE_TEMPLATE_MMX2
1248
#undef COMPILE_TEMPLATE_AMD3DNOW
1249
#define COMPILE_TEMPLATE_MMX 1
1250
#define COMPILE_TEMPLATE_MMX2 0
1251
#define COMPILE_TEMPLATE_AMD3DNOW 1
1252
#define RENAME(a) a ## _3DNow
1253
#include "swscale_template.c"
1254
#endif
1255

    
1256
#endif //ARCH_X86
1257

    
1258
SwsFunc ff_getSwsFunc(SwsContext *c)
1259
{
1260
#if CONFIG_RUNTIME_CPUDETECT
1261
    int flags = c->flags;
1262

    
1263
#if ARCH_X86
1264
    // ordered per speed fastest first
1265
    if (flags & SWS_CPU_CAPS_MMX2) {
1266
        sws_init_swScale_MMX2(c);
1267
        return swScale_MMX2;
1268
    } else if (flags & SWS_CPU_CAPS_3DNOW) {
1269
        sws_init_swScale_3DNow(c);
1270
        return swScale_3DNow;
1271
    } else if (flags & SWS_CPU_CAPS_MMX) {
1272
        sws_init_swScale_MMX(c);
1273
        return swScale_MMX;
1274
    } else {
1275
        sws_init_swScale_C(c);
1276
        return swScale_C;
1277
    }
1278

    
1279
#else
1280
#if COMPILE_ALTIVEC
1281
    if (flags & SWS_CPU_CAPS_ALTIVEC) {
1282
        sws_init_swScale_altivec(c);
1283
        return swScale_altivec;
1284
    } else {
1285
        sws_init_swScale_C(c);
1286
        return swScale_C;
1287
    }
1288
#endif
1289
    sws_init_swScale_C(c);
1290
    return swScale_C;
1291
#endif /* ARCH_X86 */
1292
#else //CONFIG_RUNTIME_CPUDETECT
1293
#if   COMPILE_TEMPLATE_MMX2
1294
    sws_init_swScale_MMX2(c);
1295
    return swScale_MMX2;
1296
#elif COMPILE_TEMPLATE_AMD3DNOW
1297
    sws_init_swScale_3DNow(c);
1298
    return swScale_3DNow;
1299
#elif COMPILE_TEMPLATE_MMX
1300
    sws_init_swScale_MMX(c);
1301
    return swScale_MMX;
1302
#elif COMPILE_TEMPLATE_ALTIVEC
1303
    sws_init_swScale_altivec(c);
1304
    return swScale_altivec;
1305
#else
1306
    sws_init_swScale_C(c);
1307
    return swScale_C;
1308
#endif
1309
#endif //!CONFIG_RUNTIME_CPUDETECT
1310
}
1311

    
1312
static void copyPlane(const uint8_t *src, int srcStride,
1313
                      int srcSliceY, int srcSliceH, int width,
1314
                      uint8_t *dst, int dstStride)
1315
{
1316
    dst += dstStride * srcSliceY;
1317
    if (dstStride == srcStride && srcStride > 0) {
1318
        memcpy(dst, src, srcSliceH * dstStride);
1319
    } else {
1320
        int i;
1321
        for (i=0; i<srcSliceH; i++) {
1322
            memcpy(dst, src, width);
1323
            src += srcStride;
1324
            dst += dstStride;
1325
        }
1326
    }
1327
}
1328

    
1329
static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1330
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1331
{
1332
    uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2;
1333

    
1334
    copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
1335
              dstParam[0], dstStride[0]);
1336

    
1337
    if (c->dstFormat == PIX_FMT_NV12)
1338
        interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);
1339
    else
1340
        interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);
1341

    
1342
    return srcSliceH;
1343
}
1344

    
1345
static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1346
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1347
{
1348
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1349

    
1350
    yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1351

    
1352
    return srcSliceH;
1353
}
1354

    
1355
static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1356
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1357
{
1358
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1359

    
1360
    yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);
1361

    
1362
    return srcSliceH;
1363
}
1364

    
1365
static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1366
                                int srcSliceH, uint8_t* dstParam[], int dstStride[])
1367
{
1368
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1369

    
1370
    yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1371

    
1372
    return srcSliceH;
1373
}
1374

    
1375
static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1376
                                int srcSliceH, uint8_t* dstParam[], int dstStride[])
1377
{
1378
    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
1379

    
1380
    yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
1381

    
1382
    return srcSliceH;
1383
}
1384

    
1385
static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1386
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1387
{
1388
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1389
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
1390
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
1391

    
1392
    yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1393

    
1394
    if (dstParam[3])
1395
        fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1396

    
1397
    return srcSliceH;
1398
}
1399

    
1400
static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1401
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1402
{
1403
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1404
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
1405
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
1406

    
1407
    yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1408

    
1409
    return srcSliceH;
1410
}
1411

    
1412
static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1413
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1414
{
1415
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1416
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;
1417
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;
1418

    
1419
    uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1420

    
1421
    if (dstParam[3])
1422
        fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1423

    
1424
    return srcSliceH;
1425
}
1426

    
1427
static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1428
                               int srcSliceH, uint8_t* dstParam[], int dstStride[])
1429
{
1430
    uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;
1431
    uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;
1432
    uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;
1433

    
1434
    uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);
1435

    
1436
    return srcSliceH;
1437
}
1438

    
1439
static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
1440
{
1441
    long i;
1442
    for (i=0; i<num_pixels; i++)
1443
        ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24);
1444
}
1445

    
1446
static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
1447
{
1448
    long i;
1449

    
1450
    for (i=0; i<num_pixels; i++)
1451
        ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1];
1452
}
1453

    
1454
static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
1455
{
1456
    long i;
1457

    
1458
    for (i=0; i<num_pixels; i++) {
1459
        //FIXME slow?
1460
        dst[0]= palette[src[i<<1]*4+0];
1461
        dst[1]= palette[src[i<<1]*4+1];
1462
        dst[2]= palette[src[i<<1]*4+2];
1463
        dst+= 3;
1464
    }
1465
}
1466

    
1467
static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1468
                           int srcSliceH, uint8_t* dst[], int dstStride[])
1469
{
1470
    const enum PixelFormat srcFormat= c->srcFormat;
1471
    const enum PixelFormat dstFormat= c->dstFormat;
1472
    void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,
1473
                 const uint8_t *palette)=NULL;
1474
    int i;
1475
    uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1476
    const uint8_t *srcPtr= src[0];
1477

    
1478
    if (srcFormat == PIX_FMT_Y400A) {
1479
        switch (dstFormat) {
1480
        case PIX_FMT_RGB32  : conv = gray8aToPacked32; break;
1481
        case PIX_FMT_BGR32  : conv = gray8aToPacked32; break;
1482
        case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
1483
        case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
1484
        case PIX_FMT_RGB24  : conv = gray8aToPacked24; break;
1485
        case PIX_FMT_BGR24  : conv = gray8aToPacked24; break;
1486
        }
1487
    } else if (usePal(srcFormat)) {
1488
        switch (dstFormat) {
1489
        case PIX_FMT_RGB32  : conv = sws_convertPalette8ToPacked32; break;
1490
        case PIX_FMT_BGR32  : conv = sws_convertPalette8ToPacked32; break;
1491
        case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
1492
        case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
1493
        case PIX_FMT_RGB24  : conv = sws_convertPalette8ToPacked24; break;
1494
        case PIX_FMT_BGR24  : conv = sws_convertPalette8ToPacked24; break;
1495
        }
1496
    }
1497

    
1498
    if (!conv)
1499
        av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1500
               sws_format_name(srcFormat), sws_format_name(dstFormat));
1501
    else {
1502
        for (i=0; i<srcSliceH; i++) {
1503
            conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
1504
            srcPtr+= srcStride[0];
1505
            dstPtr+= dstStride[0];
1506
        }
1507
    }
1508

    
1509
    return srcSliceH;
1510
}
1511

    
1512
#define isRGBA32(x) (            \
1513
           (x) == PIX_FMT_ARGB   \
1514
        || (x) == PIX_FMT_RGBA   \
1515
        || (x) == PIX_FMT_BGRA   \
1516
        || (x) == PIX_FMT_ABGR   \
1517
        )
1518

    
1519
/* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
1520
static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1521
                           int srcSliceH, uint8_t* dst[], int dstStride[])
1522
{
1523
    const enum PixelFormat srcFormat= c->srcFormat;
1524
    const enum PixelFormat dstFormat= c->dstFormat;
1525
    const int srcBpp= (c->srcFormatBpp + 7) >> 3;
1526
    const int dstBpp= (c->dstFormatBpp + 7) >> 3;
1527
    const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */
1528
    const int dstId= c->dstFormatBpp >> 2;
1529
    void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;
1530

    
1531
#define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
1532

    
1533
    if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
1534
        if (     CONV_IS(ABGR, RGBA)
1535
              || CONV_IS(ARGB, BGRA)
1536
              || CONV_IS(BGRA, ARGB)
1537
              || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
1538
        else if (CONV_IS(ABGR, ARGB)
1539
              || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
1540
        else if (CONV_IS(ABGR, BGRA)
1541
              || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
1542
        else if (CONV_IS(BGRA, RGBA)
1543
              || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
1544
        else if (CONV_IS(BGRA, ABGR)
1545
              || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
1546
    } else
1547
    /* BGR -> BGR */
1548
    if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))
1549
       || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
1550
        switch(srcId | (dstId<<4)) {
1551
        case 0x34: conv= rgb16to15; break;
1552
        case 0x36: conv= rgb24to15; break;
1553
        case 0x38: conv= rgb32to15; break;
1554
        case 0x43: conv= rgb15to16; break;
1555
        case 0x46: conv= rgb24to16; break;
1556
        case 0x48: conv= rgb32to16; break;
1557
        case 0x63: conv= rgb15to24; break;
1558
        case 0x64: conv= rgb16to24; break;
1559
        case 0x68: conv= rgb32to24; break;
1560
        case 0x83: conv= rgb15to32; break;
1561
        case 0x84: conv= rgb16to32; break;
1562
        case 0x86: conv= rgb24to32; break;
1563
        }
1564
    } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))
1565
             || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
1566
        switch(srcId | (dstId<<4)) {
1567
        case 0x33: conv= rgb15tobgr15; break;
1568
        case 0x34: conv= rgb16tobgr15; break;
1569
        case 0x36: conv= rgb24tobgr15; break;
1570
        case 0x38: conv= rgb32tobgr15; break;
1571
        case 0x43: conv= rgb15tobgr16; break;
1572
        case 0x44: conv= rgb16tobgr16; break;
1573
        case 0x46: conv= rgb24tobgr16; break;
1574
        case 0x48: conv= rgb32tobgr16; break;
1575
        case 0x63: conv= rgb15tobgr24; break;
1576
        case 0x64: conv= rgb16tobgr24; break;
1577
        case 0x66: conv= rgb24tobgr24; break;
1578
        case 0x68: conv= rgb32tobgr24; break;
1579
        case 0x83: conv= rgb15tobgr32; break;
1580
        case 0x84: conv= rgb16tobgr32; break;
1581
        case 0x86: conv= rgb24tobgr32; break;
1582
        }
1583
    }
1584

    
1585
    if (!conv) {
1586
        av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
1587
               sws_format_name(srcFormat), sws_format_name(dstFormat));
1588
    } else {
1589
        const uint8_t *srcPtr= src[0];
1590
              uint8_t *dstPtr= dst[0];
1591
        if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))
1592
            srcPtr += ALT32_CORR;
1593

    
1594
        if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))
1595
            dstPtr += ALT32_CORR;
1596

    
1597
        if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)
1598
            conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);
1599
        else {
1600
            int i;
1601
            dstPtr += dstStride[0]*srcSliceY;
1602

    
1603
            for (i=0; i<srcSliceH; i++) {
1604
                conv(srcPtr, dstPtr, c->srcW*srcBpp);
1605
                srcPtr+= srcStride[0];
1606
                dstPtr+= dstStride[0];
1607
            }
1608
        }
1609
    }
1610
    return srcSliceH;
1611
}
1612

    
1613
static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1614
                              int srcSliceH, uint8_t* dst[], int dstStride[])
1615
{
1616
    rgb24toyv12(
1617
        src[0],
1618
        dst[0]+ srcSliceY    *dstStride[0],
1619
        dst[1]+(srcSliceY>>1)*dstStride[1],
1620
        dst[2]+(srcSliceY>>1)*dstStride[2],
1621
        c->srcW, srcSliceH,
1622
        dstStride[0], dstStride[1], srcStride[0]);
1623
    if (dst[3])
1624
        fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1625
    return srcSliceH;
1626
}
1627

    
1628
static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1629
                             int srcSliceH, uint8_t* dst[], int dstStride[])
1630
{
1631
    copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
1632
              dst[0], dstStride[0]);
1633

    
1634
    planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,
1635
             srcSliceH >> 2, srcStride[1], dstStride[1]);
1636
    planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,
1637
             srcSliceH >> 2, srcStride[2], dstStride[2]);
1638
    if (dst[3])
1639
        fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
1640
    return srcSliceH;
1641
}
1642

    
1643
/* unscaled copy like stuff (assumes nearly identical formats) */
1644
static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1645
                             int srcSliceH, uint8_t* dst[], int dstStride[])
1646
{
1647
    if (dstStride[0]==srcStride[0] && srcStride[0] > 0)
1648
        memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);
1649
    else {
1650
        int i;
1651
        const uint8_t *srcPtr= src[0];
1652
        uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;
1653
        int length=0;
1654

    
1655
        /* universal length finder */
1656
        while(length+c->srcW <= FFABS(dstStride[0])
1657
           && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;
1658
        assert(length!=0);
1659

    
1660
        for (i=0; i<srcSliceH; i++) {
1661
            memcpy(dstPtr, srcPtr, length);
1662
            srcPtr+= srcStride[0];
1663
            dstPtr+= dstStride[0];
1664
        }
1665
    }
1666
    return srcSliceH;
1667
}
1668

    
1669
static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
1670
                             int srcSliceH, uint8_t* dst[], int dstStride[])
1671
{
1672
    int plane, i, j;
1673
    for (plane=0; plane<4; plane++) {
1674
        int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);
1675
        int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);
1676
        int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);
1677
        const uint8_t *srcPtr= src[plane];
1678
        uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;
1679

    
1680
        if (!dst[plane]) continue;
1681
        // ignore palette for GRAY8
1682
        if (plane == 1 && !dst[2]) continue;
1683
        if (!src[plane] || (plane == 1 && !src[2])) {
1684
            if(is16BPS(c->dstFormat))
1685
                length*=2;
1686
            fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);
1687
        } else {
1688
            if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
1689
                if (!isBE(c->srcFormat)) srcPtr++;
1690
                for (i=0; i<height; i++) {
1691
                    for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
1692
                    srcPtr+= srcStride[plane];
1693
                    dstPtr+= dstStride[plane];
1694
                }
1695
            } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
1696
                for (i=0; i<height; i++) {
1697
                    for (j=0; j<length; j++) {
1698
                        dstPtr[ j<<1   ] = srcPtr[j];
1699
                        dstPtr[(j<<1)+1] = srcPtr[j];
1700
                    }
1701
                    srcPtr+= srcStride[plane];
1702
                    dstPtr+= dstStride[plane];
1703
                }
1704
            } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)
1705
                  && isBE(c->srcFormat) != isBE(c->dstFormat)) {
1706

    
1707
                for (i=0; i<height; i++) {
1708
                    for (j=0; j<length; j++)
1709
                        ((uint16_t*)dstPtr)[j] = av_bswap16(((const uint16_t*)srcPtr)[j]);
1710
                    srcPtr+= srcStride[plane];
1711
                    dstPtr+= dstStride[plane];
1712
                }
1713
            } else if (dstStride[plane] == srcStride[plane] &&
1714
                       srcStride[plane] > 0 && srcStride[plane] == length) {
1715
                memcpy(dst[plane] + dstStride[plane]*y, src[plane],
1716
                       height*dstStride[plane]);
1717
            } else {
1718
                if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
1719
                    length*=2;
1720
                for (i=0; i<height; i++) {
1721
                    memcpy(dstPtr, srcPtr, length);
1722
                    srcPtr+= srcStride[plane];
1723
                    dstPtr+= dstStride[plane];
1724
                }
1725
            }
1726
        }
1727
    }
1728
    return srcSliceH;
1729
}
1730

    
1731
int ff_hardcodedcpuflags(void)
1732
{
1733
    int flags = 0;
1734
#if   COMPILE_TEMPLATE_MMX2
1735
    flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;
1736
#elif COMPILE_TEMPLATE_AMD3DNOW
1737
    flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;
1738
#elif COMPILE_TEMPLATE_MMX
1739
    flags |= SWS_CPU_CAPS_MMX;
1740
#elif COMPILE_TEMPLATE_ALTIVEC
1741
    flags |= SWS_CPU_CAPS_ALTIVEC;
1742
#elif ARCH_BFIN
1743
    flags |= SWS_CPU_CAPS_BFIN;
1744
#endif
1745
    return flags;
1746
}
1747

    
1748
void ff_get_unscaled_swscale(SwsContext *c)
1749
{
1750
    const enum PixelFormat srcFormat = c->srcFormat;
1751
    const enum PixelFormat dstFormat = c->dstFormat;
1752
    const int flags = c->flags;
1753
    const int dstH = c->dstH;
1754
    int needsDither;
1755

    
1756
    needsDither= isAnyRGB(dstFormat)
1757
        &&  c->dstFormatBpp < 24
1758
        && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
1759

    
1760
    /* yv12_to_nv12 */
1761
    if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
1762
        c->swScale= planarToNv12Wrapper;
1763
    }
1764
    /* yuv2bgr */
1765
    if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)
1766
        && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {
1767
        c->swScale= ff_yuv2rgb_get_func_ptr(c);
1768
    }
1769

    
1770
    if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {
1771
        c->swScale= yvu9ToYv12Wrapper;
1772
    }
1773

    
1774
    /* bgr24toYV12 */
1775
    if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))
1776
        c->swScale= bgr24ToYv12Wrapper;
1777

    
1778
    /* RGB/BGR -> RGB/BGR (no dither needed forms) */
1779
    if (   isAnyRGB(srcFormat)
1780
        && isAnyRGB(dstFormat)
1781
        && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8
1782
        && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8
1783
        && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4
1784
        && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4
1785
        && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
1786
        && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
1787
        && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
1788
        && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
1789
        && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE
1790
        && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE
1791
        && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
1792
        c->swScale= rgbToRgbWrapper;
1793

    
1794
    if ((usePal(srcFormat) && (
1795
        dstFormat == PIX_FMT_RGB32   ||
1796
        dstFormat == PIX_FMT_RGB32_1 ||
1797
        dstFormat == PIX_FMT_RGB24   ||
1798
        dstFormat == PIX_FMT_BGR32   ||
1799
        dstFormat == PIX_FMT_BGR32_1 ||
1800
        dstFormat == PIX_FMT_BGR24)))
1801
        c->swScale= palToRgbWrapper;
1802

    
1803
    if (srcFormat == PIX_FMT_YUV422P) {
1804
        if (dstFormat == PIX_FMT_YUYV422)
1805
            c->swScale= yuv422pToYuy2Wrapper;
1806
        else if (dstFormat == PIX_FMT_UYVY422)
1807
            c->swScale= yuv422pToUyvyWrapper;
1808
    }
1809

    
1810
    /* LQ converters if -sws 0 or -sws 4*/
1811
    if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
1812
        /* yv12_to_yuy2 */
1813
        if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
1814
            if (dstFormat == PIX_FMT_YUYV422)
1815
                c->swScale= planarToYuy2Wrapper;
1816
            else if (dstFormat == PIX_FMT_UYVY422)
1817
                c->swScale= planarToUyvyWrapper;
1818
        }
1819
    }
1820
    if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1821
        c->swScale= yuyvToYuv420Wrapper;
1822
    if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
1823
        c->swScale= uyvyToYuv420Wrapper;
1824
    if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
1825
        c->swScale= yuyvToYuv422Wrapper;
1826
    if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
1827
        c->swScale= uyvyToYuv422Wrapper;
1828

    
1829
#if COMPILE_ALTIVEC
1830
    if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&
1831
        !(c->flags & SWS_BITEXACT) &&
1832
        srcFormat == PIX_FMT_YUV420P) {
1833
        // unscaled YV12 -> packed YUV, we want speed
1834
        if (dstFormat == PIX_FMT_YUYV422)
1835
            c->swScale= yv12toyuy2_unscaled_altivec;
1836
        else if (dstFormat == PIX_FMT_UYVY422)
1837
            c->swScale= yv12touyvy_unscaled_altivec;
1838
    }
1839
#endif
1840

    
1841
    /* simple copy */
1842
    if (  srcFormat == dstFormat
1843
        || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)
1844
        || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)
1845
        || (isPlanarYUV(srcFormat) && isGray(dstFormat))
1846
        || (isPlanarYUV(dstFormat) && isGray(srcFormat))
1847
        || (isGray(dstFormat) && isGray(srcFormat))
1848
        || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)
1849
            && c->chrDstHSubSample == c->chrSrcHSubSample
1850
            && c->chrDstVSubSample == c->chrSrcVSubSample
1851
            && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21
1852
            && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
1853
    {
1854
        if (isPacked(c->srcFormat))
1855
            c->swScale= packedCopyWrapper;
1856
        else /* Planar YUV or gray */
1857
            c->swScale= planarCopyWrapper;
1858
    }
1859
#if ARCH_BFIN
1860
    if (flags & SWS_CPU_CAPS_BFIN)
1861
        ff_bfin_get_unscaled_swscale (c);
1862
#endif
1863
}
1864

    
1865
static void reset_ptr(const uint8_t* src[], int format)
1866
{
1867
    if(!isALPHA(format))
1868
        src[3]=NULL;
1869
    if(!isPlanarYUV(format)) {
1870
        src[3]=src[2]=NULL;
1871

    
1872
        if (!usePal(format))
1873
            src[1]= NULL;
1874
    }
1875
}
1876

    
1877
static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,
1878
                                const int linesizes[4])
1879
{
1880
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
1881
    int i;
1882

    
1883
    for (i = 0; i < 4; i++) {
1884
        int plane = desc->comp[i].plane;
1885
        if (!data[plane] || !linesizes[plane])
1886
            return 0;
1887
    }
1888

    
1889
    return 1;
1890
}
1891

    
1892
/**
1893
 * swscale wrapper, so we don't need to export the SwsContext.
1894
 * Assumes planar YUV to be in YUV order instead of YVU.
1895
 */
1896
int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,
1897
              int srcSliceH, uint8_t* const dst[], const int dstStride[])
1898
{
1899
    int i;
1900
    const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};
1901
    uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};
1902

    
1903
    // do not mess up sliceDir if we have a "trailing" 0-size slice
1904
    if (srcSliceH == 0)
1905
        return 0;
1906

    
1907
    if (!check_image_pointers(src, c->srcFormat, srcStride)) {
1908
        av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
1909
        return 0;
1910
    }
1911
    if (!check_image_pointers(dst, c->dstFormat, dstStride)) {
1912
        av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
1913
        return 0;
1914
    }
1915

    
1916
    if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
1917
        av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
1918
        return 0;
1919
    }
1920
    if (c->sliceDir == 0) {
1921
        if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
1922
    }
1923

    
1924
    if (usePal(c->srcFormat)) {
1925
        for (i=0; i<256; i++) {
1926
            int p, r, g, b,y,u,v;
1927
            if(c->srcFormat == PIX_FMT_PAL8) {
1928
                p=((const uint32_t*)(src[1]))[i];
1929
                r= (p>>16)&0xFF;
1930
                g= (p>> 8)&0xFF;
1931
                b=  p     &0xFF;
1932
            } else if(c->srcFormat == PIX_FMT_RGB8) {
1933
                r= (i>>5    )*36;
1934
                g= ((i>>2)&7)*36;
1935
                b= (i&3     )*85;
1936
            } else if(c->srcFormat == PIX_FMT_BGR8) {
1937
                b= (i>>6    )*85;
1938
                g= ((i>>3)&7)*36;
1939
                r= (i&7     )*36;
1940
            } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {
1941
                r= (i>>3    )*255;
1942
                g= ((i>>1)&3)*85;
1943
                b= (i&1     )*255;
1944
            } else if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_Y400A) {
1945
                r = g = b = i;
1946
            } else {
1947
                assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
1948
                b= (i>>3    )*255;
1949
                g= ((i>>1)&3)*85;
1950
                r= (i&1     )*255;
1951
            }
1952
            y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1953
            u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1954
            v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
1955
            c->pal_yuv[i]= y + (u<<8) + (v<<16);
1956

    
1957
            switch(c->dstFormat) {
1958
            case PIX_FMT_BGR32:
1959
#if !HAVE_BIGENDIAN
1960
            case PIX_FMT_RGB24:
1961
#endif
1962
                c->pal_rgb[i]=  r + (g<<8) + (b<<16);
1963
                break;
1964
            case PIX_FMT_BGR32_1:
1965
#if HAVE_BIGENDIAN
1966
            case PIX_FMT_BGR24:
1967
#endif
1968
                c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;
1969
                break;
1970
            case PIX_FMT_RGB32_1:
1971
#if HAVE_BIGENDIAN
1972
            case PIX_FMT_RGB24:
1973
#endif
1974
                c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;
1975
                break;
1976
            case PIX_FMT_RGB32:
1977
#if !HAVE_BIGENDIAN
1978
            case PIX_FMT_BGR24:
1979
#endif
1980
            default:
1981
                c->pal_rgb[i]=  b + (g<<8) + (r<<16);
1982
            }
1983
        }
1984
    }
1985

    
1986
    // copy strides, so they can safely be modified
1987
    if (c->sliceDir == 1) {
1988
        // slices go from top to bottom
1989
        int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};
1990
        int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};
1991

    
1992
        reset_ptr(src2, c->srcFormat);
1993
        reset_ptr((const uint8_t**)dst2, c->dstFormat);
1994

    
1995
        /* reset slice direction at end of frame */
1996
        if (srcSliceY + srcSliceH == c->srcH)
1997
            c->sliceDir = 0;
1998

    
1999
        return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);
2000
    } else {
2001
        // slices go from bottom to top => we flip the image internally
2002
        int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};
2003
        int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};
2004

    
2005
        src2[0] += (srcSliceH-1)*srcStride[0];
2006
        if (!usePal(c->srcFormat))
2007
            src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];
2008
        src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];
2009
        src2[3] += (srcSliceH-1)*srcStride[3];
2010
        dst2[0] += ( c->dstH                      -1)*dstStride[0];
2011
        dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];
2012
        dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];
2013
        dst2[3] += ( c->dstH                      -1)*dstStride[3];
2014

    
2015
        reset_ptr(src2, c->srcFormat);
2016
        reset_ptr((const uint8_t**)dst2, c->dstFormat);
2017

    
2018
        /* reset slice direction at end of frame */
2019
        if (!srcSliceY)
2020
            c->sliceDir = 0;
2021

    
2022
        return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);
2023
    }
2024
}
2025

    
2026
#if LIBSWSCALE_VERSION_MAJOR < 1
2027
int sws_scale_ordered(SwsContext *c, const uint8_t* const src[], int srcStride[], int srcSliceY,
2028
                      int srcSliceH, uint8_t* dst[], int dstStride[])
2029
{
2030
    return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);
2031
}
2032
#endif
2033

    
2034
/* Convert the palette to the same packed 32-bit format as the palette */
2035
void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
2036
{
2037
    long i;
2038

    
2039
    for (i=0; i<num_pixels; i++)
2040
        ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
2041
}
2042

    
2043
/* Palette format: ABCD -> dst format: ABC */
2044
void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)
2045
{
2046
    long i;
2047

    
2048
    for (i=0; i<num_pixels; i++) {
2049
        //FIXME slow?
2050
        dst[0]= palette[src[i]*4+0];
2051
        dst[1]= palette[src[i]*4+1];
2052
        dst[2]= palette[src[i]*4+2];
2053
        dst+= 3;
2054
    }
2055
}