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ffmpeg / libswscale / yuv2rgb.c @ a4e44130

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/*
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 * software YUV to RGB converter
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 *
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 * Copyright (C) 2009 Konstantin Shishkov
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 *
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 * 1,4,8bpp support and context / deglobalize stuff
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 * by Michael Niedermayer (michaelni@gmx.at)
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg 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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 * FFmpeg 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 FFmpeg; 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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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <assert.h>
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#include "config.h"
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#include "rgb2rgb.h"
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#include "swscale.h"
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#include "swscale_internal.h"
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#include "libavutil/x86_cpu.h"
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#include "libavutil/bswap.h"
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extern const uint8_t dither_4x4_16[4][8];
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extern const uint8_t dither_8x8_32[8][8];
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extern const uint8_t dither_8x8_73[8][8];
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extern const uint8_t dither_8x8_220[8][8];
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const int32_t ff_yuv2rgb_coeffs[8][4] = {
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    {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
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    {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
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    {104597, 132201, 25675, 53279}, /* unspecified */
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    {104597, 132201, 25675, 53279}, /* reserved */
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    {104448, 132798, 24759, 53109}, /* FCC */
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    {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
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    {104597, 132201, 25675, 53279}, /* SMPTE 170M */
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    {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */
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};
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const int *sws_getCoefficients(int colorspace)
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{
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    if (colorspace > 7 || colorspace < 0)
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        colorspace = SWS_CS_DEFAULT;
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    return ff_yuv2rgb_coeffs[colorspace];
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}
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#define LOADCHROMA(i)                               \
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    U = pu[i];                                      \
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    V = pv[i];                                      \
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    r = (void *)c->table_rV[V];                     \
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    g = (void *)(c->table_gU[U] + c->table_gV[V]);  \
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    b = (void *)c->table_bU[U];
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#define PUTRGB(dst,src,i)            \
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    Y = src[2*i];                    \
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    dst[2*i  ] = r[Y] + g[Y] + b[Y]; \
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    Y = src[2*i+1];                  \
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    dst[2*i+1] = r[Y] + g[Y] + b[Y];
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#define PUTRGB24(dst,src,i)                                  \
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    Y = src[2*i];                                            \
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    dst[6*i+0] = r[Y]; dst[6*i+1] = g[Y]; dst[6*i+2] = b[Y]; \
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    Y = src[2*i+1];                                          \
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    dst[6*i+3] = r[Y]; dst[6*i+4] = g[Y]; dst[6*i+5] = b[Y];
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#define PUTBGR24(dst,src,i)                                  \
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    Y = src[2*i];                                            \
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    dst[6*i+0] = b[Y]; dst[6*i+1] = g[Y]; dst[6*i+2] = r[Y]; \
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    Y = src[2*i+1];                                          \
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    dst[6*i+3] = b[Y]; dst[6*i+4] = g[Y]; dst[6*i+5] = r[Y];
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#define PUTRGBA(dst,ysrc,asrc,i,s)                      \
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    Y = ysrc[2*i];                                      \
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    dst[2*i  ] = r[Y] + g[Y] + b[Y] + (asrc[2*i  ]<<s); \
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    Y = ysrc[2*i+1];                                    \
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    dst[2*i+1] = r[Y] + g[Y] + b[Y] + (asrc[2*i+1]<<s);
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#define PUTRGB48(dst,src,i)             \
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    Y = src[2*i];                       \
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    dst[12*i+ 0] = dst[12*i+ 1] = r[Y]; \
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    dst[12*i+ 2] = dst[12*i+ 3] = g[Y]; \
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    dst[12*i+ 4] = dst[12*i+ 5] = b[Y]; \
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    Y = src[2*i+1];                     \
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    dst[12*i+ 6] = dst[12*i+ 7] = r[Y]; \
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    dst[12*i+ 8] = dst[12*i+ 9] = g[Y]; \
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    dst[12*i+10] = dst[12*i+11] = b[Y];
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#define YUV2RGBFUNC(func_name, dst_type, alpha) \
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static int func_name(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, \
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                     int srcSliceH, uint8_t* dst[], int dstStride[]) \
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{\
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    int y;\
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\
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    if (!alpha && c->srcFormat == PIX_FMT_YUV422P) {\
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        srcStride[1] *= 2;\
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        srcStride[2] *= 2;\
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    }\
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    for (y=0; y<srcSliceH; y+=2) {\
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        dst_type *dst_1 = (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\
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        dst_type *dst_2 = (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\
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        dst_type av_unused *r, *b;\
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        dst_type *g;\
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        const uint8_t *py_1 = src[0] + y*srcStride[0];\
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        const uint8_t *py_2 = py_1 + srcStride[0];\
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        const uint8_t *pu = src[1] + (y>>1)*srcStride[1];\
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        const uint8_t *pv = src[2] + (y>>1)*srcStride[2];\
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        const uint8_t av_unused *pa_1, *pa_2;\
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        unsigned int h_size = c->dstW>>3;\
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        if (alpha) {\
124
            pa_1 = src[3] + y*srcStride[3];\
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            pa_2 = pa_1 + srcStride[3];\
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        }\
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        while (h_size--) {\
128
            int av_unused U, V;\
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            int Y;\
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#define ENDYUV2RGBLINE(dst_delta)\
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            pu += 4;\
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            pv += 4;\
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            py_1 += 8;\
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            py_2 += 8;\
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            dst_1 += dst_delta;\
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            dst_2 += dst_delta;\
138
        }\
139
        if (c->dstW & 4) {\
140
            int av_unused Y, U, V;\
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#define ENDYUV2RGBFUNC()\
143
        }\
144
    }\
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    return srcSliceH;\
146
}
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#define CLOSEYUV2RGBFUNC(dst_delta)\
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    ENDYUV2RGBLINE(dst_delta)\
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    ENDYUV2RGBFUNC()
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YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)
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    LOADCHROMA(0);
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    PUTRGB48(dst_1,py_1,0);
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    PUTRGB48(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTRGB48(dst_2,py_2,1);
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    PUTRGB48(dst_1,py_1,1);
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    LOADCHROMA(2);
162
    PUTRGB48(dst_1,py_1,2);
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    PUTRGB48(dst_2,py_2,2);
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    LOADCHROMA(3);
166
    PUTRGB48(dst_2,py_2,3);
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    PUTRGB48(dst_1,py_1,3);
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ENDYUV2RGBLINE(48)
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    LOADCHROMA(0);
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    PUTRGB48(dst_1,py_1,0);
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    PUTRGB48(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTRGB48(dst_2,py_2,1);
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    PUTRGB48(dst_1,py_1,1);
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ENDYUV2RGBFUNC()
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YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)
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    LOADCHROMA(0);
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    PUTRGB(dst_1,py_1,0);
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    PUTRGB(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTRGB(dst_2,py_2,1);
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    PUTRGB(dst_1,py_1,1);
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    LOADCHROMA(2);
188
    PUTRGB(dst_1,py_1,2);
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    PUTRGB(dst_2,py_2,2);
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191
    LOADCHROMA(3);
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    PUTRGB(dst_2,py_2,3);
193
    PUTRGB(dst_1,py_1,3);
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ENDYUV2RGBLINE(8)
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    LOADCHROMA(0);
196
    PUTRGB(dst_1,py_1,0);
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    PUTRGB(dst_2,py_2,0);
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    LOADCHROMA(1);
200
    PUTRGB(dst_2,py_2,1);
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    PUTRGB(dst_1,py_1,1);
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ENDYUV2RGBFUNC()
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YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)
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    LOADCHROMA(0);
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    PUTRGBA(dst_1,py_1,pa_1,0,24);
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    PUTRGBA(dst_2,py_2,pa_2,0,24);
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    LOADCHROMA(1);
210
    PUTRGBA(dst_2,py_2,pa_1,1,24);
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    PUTRGBA(dst_1,py_1,pa_2,1,24);
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213
    LOADCHROMA(2);
214
    PUTRGBA(dst_1,py_1,pa_1,2,24);
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    PUTRGBA(dst_2,py_2,pa_2,2,24);
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217
    LOADCHROMA(3);
218
    PUTRGBA(dst_2,py_2,pa_1,3,24);
219
    PUTRGBA(dst_1,py_1,pa_2,3,24);
220
    pa_1 += 8;\
221
    pa_2 += 8;\
222
ENDYUV2RGBLINE(8)
223
    LOADCHROMA(0);
224
    PUTRGBA(dst_1,py_1,pa_1,0,24);
225
    PUTRGBA(dst_2,py_2,pa_2,0,24);
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227
    LOADCHROMA(1);
228
    PUTRGBA(dst_2,py_2,pa_1,1,24);
229
    PUTRGBA(dst_1,py_1,pa_2,1,24);
230
ENDYUV2RGBFUNC()
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232
YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
233
    LOADCHROMA(0);
234
    PUTRGBA(dst_1,py_1,pa_1,0,0);
235
    PUTRGBA(dst_2,py_2,pa_2,0,0);
236

    
237
    LOADCHROMA(1);
238
    PUTRGBA(dst_2,py_2,pa_2,1,0);
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    PUTRGBA(dst_1,py_1,pa_1,1,0);
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241
    LOADCHROMA(2);
242
    PUTRGBA(dst_1,py_1,pa_1,2,0);
243
    PUTRGBA(dst_2,py_2,pa_2,2,0);
244

    
245
    LOADCHROMA(3);
246
    PUTRGBA(dst_2,py_2,pa_2,3,0);
247
    PUTRGBA(dst_1,py_1,pa_1,3,0);
248
    pa_1 += 8;\
249
    pa_2 += 8;\
250
ENDYUV2RGBLINE(8)
251
    LOADCHROMA(0);
252
    PUTRGBA(dst_1,py_1,pa_1,0,0);
253
    PUTRGBA(dst_2,py_2,pa_2,0,0);
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255
    LOADCHROMA(1);
256
    PUTRGBA(dst_2,py_2,pa_2,1,0);
257
    PUTRGBA(dst_1,py_1,pa_1,1,0);
258
ENDYUV2RGBFUNC()
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260
YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)
261
    LOADCHROMA(0);
262
    PUTRGB24(dst_1,py_1,0);
263
    PUTRGB24(dst_2,py_2,0);
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265
    LOADCHROMA(1);
266
    PUTRGB24(dst_2,py_2,1);
267
    PUTRGB24(dst_1,py_1,1);
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269
    LOADCHROMA(2);
270
    PUTRGB24(dst_1,py_1,2);
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    PUTRGB24(dst_2,py_2,2);
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273
    LOADCHROMA(3);
274
    PUTRGB24(dst_2,py_2,3);
275
    PUTRGB24(dst_1,py_1,3);
276
ENDYUV2RGBLINE(24)
277
    LOADCHROMA(0);
278
    PUTRGB24(dst_1,py_1,0);
279
    PUTRGB24(dst_2,py_2,0);
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281
    LOADCHROMA(1);
282
    PUTRGB24(dst_2,py_2,1);
283
    PUTRGB24(dst_1,py_1,1);
284
ENDYUV2RGBFUNC()
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286
// only trivial mods from yuv2rgb_c_24_rgb
287
YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)
288
    LOADCHROMA(0);
289
    PUTBGR24(dst_1,py_1,0);
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    PUTBGR24(dst_2,py_2,0);
291

    
292
    LOADCHROMA(1);
293
    PUTBGR24(dst_2,py_2,1);
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    PUTBGR24(dst_1,py_1,1);
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296
    LOADCHROMA(2);
297
    PUTBGR24(dst_1,py_1,2);
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    PUTBGR24(dst_2,py_2,2);
299

    
300
    LOADCHROMA(3);
301
    PUTBGR24(dst_2,py_2,3);
302
    PUTBGR24(dst_1,py_1,3);
303
ENDYUV2RGBLINE(24)
304
    LOADCHROMA(0);
305
    PUTBGR24(dst_1,py_1,0);
306
    PUTBGR24(dst_2,py_2,0);
307

    
308
    LOADCHROMA(1);
309
    PUTBGR24(dst_2,py_2,1);
310
    PUTBGR24(dst_1,py_1,1);
311
ENDYUV2RGBFUNC()
312

    
313
// This is exactly the same code as yuv2rgb_c_32 except for the types of
314
// r, g, b, dst_1, dst_2
315
YUV2RGBFUNC(yuv2rgb_c_16, uint16_t, 0)
316
    LOADCHROMA(0);
317
    PUTRGB(dst_1,py_1,0);
318
    PUTRGB(dst_2,py_2,0);
319

    
320
    LOADCHROMA(1);
321
    PUTRGB(dst_2,py_2,1);
322
    PUTRGB(dst_1,py_1,1);
323

    
324
    LOADCHROMA(2);
325
    PUTRGB(dst_1,py_1,2);
326
    PUTRGB(dst_2,py_2,2);
327

    
328
    LOADCHROMA(3);
329
    PUTRGB(dst_2,py_2,3);
330
    PUTRGB(dst_1,py_1,3);
331
CLOSEYUV2RGBFUNC(8)
332

    
333
#if 0 // Currently unused
334
// This is exactly the same code as yuv2rgb_c_32 except for the types of
335
// r, g, b, dst_1, dst_2
336
YUV2RGBFUNC(yuv2rgb_c_8, uint8_t, 0)
337
    LOADCHROMA(0);
338
    PUTRGB(dst_1,py_1,0);
339
    PUTRGB(dst_2,py_2,0);
340

341
    LOADCHROMA(1);
342
    PUTRGB(dst_2,py_2,1);
343
    PUTRGB(dst_1,py_1,1);
344

345
    LOADCHROMA(2);
346
    PUTRGB(dst_1,py_1,2);
347
    PUTRGB(dst_2,py_2,2);
348

349
    LOADCHROMA(3);
350
    PUTRGB(dst_2,py_2,3);
351
    PUTRGB(dst_1,py_1,3);
352
CLOSEYUV2RGBFUNC(8)
353
#endif
354

    
355
// r, g, b, dst_1, dst_2
356
YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)
357
    const uint8_t *d16 = dither_4x4_16[y&3];
358
#define PUTRGB12(dst,src,i,o)                                   \
359
    Y = src[2*i];                                               \
360
    dst[2*i]   = r[Y+d16[0+o]] + g[Y+d16[0+o]] + b[Y+d16[0+o]]; \
361
    Y = src[2*i+1];                                             \
362
    dst[2*i+1] = r[Y+d16[1+o]] + g[Y+d16[1+o]] + b[Y+d16[1+o]];
363

    
364
    LOADCHROMA(0);
365
    PUTRGB12(dst_1,py_1,0,0);
366
    PUTRGB12(dst_2,py_2,0,0+8);
367

    
368
    LOADCHROMA(1);
369
    PUTRGB12(dst_2,py_2,1,2+8);
370
    PUTRGB12(dst_1,py_1,1,2);
371

    
372
    LOADCHROMA(2);
373
    PUTRGB12(dst_1,py_1,2,4);
374
    PUTRGB12(dst_2,py_2,2,4+8);
375

    
376
    LOADCHROMA(3);
377
    PUTRGB12(dst_2,py_2,3,6+8);
378
    PUTRGB12(dst_1,py_1,3,6);
379
CLOSEYUV2RGBFUNC(8)
380

    
381
// r, g, b, dst_1, dst_2
382
YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
383
    const uint8_t *d32 = dither_8x8_32[y&7];
384
    const uint8_t *d64 = dither_8x8_73[y&7];
385
#define PUTRGB8(dst,src,i,o)                                    \
386
    Y = src[2*i];                                               \
387
    dst[2*i]   = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \
388
    Y = src[2*i+1];                                             \
389
    dst[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
390

    
391
    LOADCHROMA(0);
392
    PUTRGB8(dst_1,py_1,0,0);
393
    PUTRGB8(dst_2,py_2,0,0+8);
394

    
395
    LOADCHROMA(1);
396
    PUTRGB8(dst_2,py_2,1,2+8);
397
    PUTRGB8(dst_1,py_1,1,2);
398

    
399
    LOADCHROMA(2);
400
    PUTRGB8(dst_1,py_1,2,4);
401
    PUTRGB8(dst_2,py_2,2,4+8);
402

    
403
    LOADCHROMA(3);
404
    PUTRGB8(dst_2,py_2,3,6+8);
405
    PUTRGB8(dst_1,py_1,3,6);
406
CLOSEYUV2RGBFUNC(8)
407

    
408
#if 0 // Currently unused
409
// This is exactly the same code as yuv2rgb_c_32 except for the types of
410
// r, g, b, dst_1, dst_2
411
YUV2RGBFUNC(yuv2rgb_c_4, uint8_t, 0)
412
    int acc;
413
#define PUTRGB4(dst,src,i)          \
414
    Y = src[2*i];                   \
415
    acc = r[Y] + g[Y] + b[Y];       \
416
    Y = src[2*i+1];                 \
417
    acc |= (r[Y] + g[Y] + b[Y])<<4; \
418
    dst[i] = acc;
419

420
    LOADCHROMA(0);
421
    PUTRGB4(dst_1,py_1,0);
422
    PUTRGB4(dst_2,py_2,0);
423

424
    LOADCHROMA(1);
425
    PUTRGB4(dst_2,py_2,1);
426
    PUTRGB4(dst_1,py_1,1);
427

428
    LOADCHROMA(2);
429
    PUTRGB4(dst_1,py_1,2);
430
    PUTRGB4(dst_2,py_2,2);
431

432
    LOADCHROMA(3);
433
    PUTRGB4(dst_2,py_2,3);
434
    PUTRGB4(dst_1,py_1,3);
435
CLOSEYUV2RGBFUNC(4)
436
#endif
437

    
438
YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)
439
    const uint8_t *d64 =  dither_8x8_73[y&7];
440
    const uint8_t *d128 = dither_8x8_220[y&7];
441
    int acc;
442

    
443
#define PUTRGB4D(dst,src,i,o)                                     \
444
    Y = src[2*i];                                                 \
445
    acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];        \
446
    Y = src[2*i+1];                                               \
447
    acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;  \
448
    dst[i]= acc;
449

    
450
    LOADCHROMA(0);
451
    PUTRGB4D(dst_1,py_1,0,0);
452
    PUTRGB4D(dst_2,py_2,0,0+8);
453

    
454
    LOADCHROMA(1);
455
    PUTRGB4D(dst_2,py_2,1,2+8);
456
    PUTRGB4D(dst_1,py_1,1,2);
457

    
458
    LOADCHROMA(2);
459
    PUTRGB4D(dst_1,py_1,2,4);
460
    PUTRGB4D(dst_2,py_2,2,4+8);
461

    
462
    LOADCHROMA(3);
463
    PUTRGB4D(dst_2,py_2,3,6+8);
464
    PUTRGB4D(dst_1,py_1,3,6);
465
CLOSEYUV2RGBFUNC(4)
466

    
467
#if 0 // Currently unused
468
// This is exactly the same code as yuv2rgb_c_32 except for the types of
469
// r, g, b, dst_1, dst_2
470
YUV2RGBFUNC(yuv2rgb_c_4b, uint8_t, 0)
471
    LOADCHROMA(0);
472
    PUTRGB(dst_1,py_1,0);
473
    PUTRGB(dst_2,py_2,0);
474

475
    LOADCHROMA(1);
476
    PUTRGB(dst_2,py_2,1);
477
    PUTRGB(dst_1,py_1,1);
478

479
    LOADCHROMA(2);
480
    PUTRGB(dst_1,py_1,2);
481
    PUTRGB(dst_2,py_2,2);
482

483
    LOADCHROMA(3);
484
    PUTRGB(dst_2,py_2,3);
485
    PUTRGB(dst_1,py_1,3);
486
CLOSEYUV2RGBFUNC(8)
487
#endif
488

    
489
YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)
490
    const uint8_t *d64 =  dither_8x8_73[y&7];
491
    const uint8_t *d128 = dither_8x8_220[y&7];
492

    
493
#define PUTRGB4DB(dst,src,i,o)                                    \
494
    Y = src[2*i];                                                 \
495
    dst[2*i]   = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
496
    Y = src[2*i+1];                                               \
497
    dst[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
498

    
499
    LOADCHROMA(0);
500
    PUTRGB4DB(dst_1,py_1,0,0);
501
    PUTRGB4DB(dst_2,py_2,0,0+8);
502

    
503
    LOADCHROMA(1);
504
    PUTRGB4DB(dst_2,py_2,1,2+8);
505
    PUTRGB4DB(dst_1,py_1,1,2);
506

    
507
    LOADCHROMA(2);
508
    PUTRGB4DB(dst_1,py_1,2,4);
509
    PUTRGB4DB(dst_2,py_2,2,4+8);
510

    
511
    LOADCHROMA(3);
512
    PUTRGB4DB(dst_2,py_2,3,6+8);
513
    PUTRGB4DB(dst_1,py_1,3,6);
514
CLOSEYUV2RGBFUNC(8)
515

    
516
YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)
517
        const uint8_t *d128 = dither_8x8_220[y&7];
518
        char out_1 = 0, out_2 = 0;
519
        g= c->table_gU[128] + c->table_gV[128];
520

    
521
#define PUTRGB1(out,src,i,o)    \
522
    Y = src[2*i];               \
523
    out+= out + g[Y+d128[0+o]]; \
524
    Y = src[2*i+1];             \
525
    out+= out + g[Y+d128[1+o]];
526

    
527
    PUTRGB1(out_1,py_1,0,0);
528
    PUTRGB1(out_2,py_2,0,0+8);
529

    
530
    PUTRGB1(out_2,py_2,1,2+8);
531
    PUTRGB1(out_1,py_1,1,2);
532

    
533
    PUTRGB1(out_1,py_1,2,4);
534
    PUTRGB1(out_2,py_2,2,4+8);
535

    
536
    PUTRGB1(out_2,py_2,3,6+8);
537
    PUTRGB1(out_1,py_1,3,6);
538

    
539
    dst_1[0]= out_1;
540
    dst_2[0]= out_2;
541
CLOSEYUV2RGBFUNC(1)
542

    
543
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
544
{
545
    SwsFunc t = NULL;
546
#if (HAVE_MMX2 || HAVE_MMX) && CONFIG_GPL
547
     t = ff_yuv2rgb_init_mmx(c);
548
#endif
549
#if HAVE_VIS
550
    t = ff_yuv2rgb_init_vis(c);
551
#endif
552
#if CONFIG_MLIB
553
    t = ff_yuv2rgb_init_mlib(c);
554
#endif
555
#if HAVE_ALTIVEC
556
    if (c->flags & SWS_CPU_CAPS_ALTIVEC)
557
        t = ff_yuv2rgb_init_altivec(c);
558
#endif
559

    
560
#if ARCH_BFIN
561
    if (c->flags & SWS_CPU_CAPS_BFIN)
562
        t = ff_yuv2rgb_get_func_ptr_bfin(c);
563
#endif
564

    
565
    if (t)
566
        return t;
567

    
568
    av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found from %s to %s.\n", sws_format_name(c->srcFormat), sws_format_name(c->dstFormat));
569

    
570
    switch (c->dstFormat) {
571
    case PIX_FMT_RGB48BE:
572
    case PIX_FMT_RGB48LE:    return yuv2rgb_c_48;
573
    case PIX_FMT_ARGB:
574
    case PIX_FMT_ABGR:       if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) return yuva2argb_c;
575
    case PIX_FMT_RGBA:
576
    case PIX_FMT_BGRA:       return (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) ? yuva2rgba_c : yuv2rgb_c_32;
577
    case PIX_FMT_RGB24:      return yuv2rgb_c_24_rgb;
578
    case PIX_FMT_BGR24:      return yuv2rgb_c_24_bgr;
579
    case PIX_FMT_RGB565:
580
    case PIX_FMT_BGR565:
581
    case PIX_FMT_RGB555:
582
    case PIX_FMT_BGR555:     return yuv2rgb_c_16;
583
    case PIX_FMT_RGB444:
584
    case PIX_FMT_BGR444:     return yuv2rgb_c_12_ordered_dither;
585
    case PIX_FMT_RGB8:
586
    case PIX_FMT_BGR8:       return yuv2rgb_c_8_ordered_dither;
587
    case PIX_FMT_RGB4:
588
    case PIX_FMT_BGR4:       return yuv2rgb_c_4_ordered_dither;
589
    case PIX_FMT_RGB4_BYTE:
590
    case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;
591
    case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;
592
    default:
593
        assert(0);
594
    }
595
    return NULL;
596
}
597

    
598
static void fill_table(uint8_t* table[256], const int elemsize, const int inc, uint8_t *y_table)
599
{
600
    int i;
601
    int64_t cb = 0;
602

    
603
    y_table -= elemsize * (inc >> 9);
604

    
605
    for (i = 0; i < 256; i++) {
606
        table[i] = y_table + elemsize * (cb >> 16);
607
        cb += inc;
608
    }
609
}
610

    
611
static void fill_gv_table(int table[256], const int elemsize, const int inc)
612
{
613
    int i;
614
    int64_t cb = 0;
615
    int off = -(inc >> 9);
616

    
617
    for (i = 0; i < 256; i++) {
618
        table[i] = elemsize * (off + (cb >> 16));
619
        cb += inc;
620
    }
621
}
622

    
623
av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange,
624
                                     int brightness, int contrast, int saturation)
625
{
626
    const int isRgb =      c->dstFormat==PIX_FMT_RGB32
627
                        || c->dstFormat==PIX_FMT_RGB32_1
628
                        || c->dstFormat==PIX_FMT_BGR24
629
                        || c->dstFormat==PIX_FMT_RGB565BE
630
                        || c->dstFormat==PIX_FMT_RGB565LE
631
                        || c->dstFormat==PIX_FMT_RGB555BE
632
                        || c->dstFormat==PIX_FMT_RGB555LE
633
                        || c->dstFormat==PIX_FMT_RGB444BE
634
                        || c->dstFormat==PIX_FMT_RGB444LE
635
                        || c->dstFormat==PIX_FMT_RGB8
636
                        || c->dstFormat==PIX_FMT_RGB4
637
                        || c->dstFormat==PIX_FMT_RGB4_BYTE
638
                        || c->dstFormat==PIX_FMT_MONOBLACK;
639
    const int isNotNe =    c->dstFormat==PIX_FMT_NE(RGB565LE,RGB565BE)
640
                        || c->dstFormat==PIX_FMT_NE(RGB555LE,RGB555BE)
641
                        || c->dstFormat==PIX_FMT_NE(RGB444LE,RGB444BE)
642
                        || c->dstFormat==PIX_FMT_NE(BGR565LE,BGR565BE)
643
                        || c->dstFormat==PIX_FMT_NE(BGR555LE,BGR555BE)
644
                        || c->dstFormat==PIX_FMT_NE(BGR444LE,BGR444BE);
645
    const int bpp = c->dstFormatBpp;
646
    uint8_t *y_table;
647
    uint16_t *y_table16;
648
    uint32_t *y_table32;
649
    int i, base, rbase, gbase, bbase, abase, needAlpha;
650
    const int yoffs = fullRange ? 384 : 326;
651

    
652
    int64_t crv =  inv_table[0];
653
    int64_t cbu =  inv_table[1];
654
    int64_t cgu = -inv_table[2];
655
    int64_t cgv = -inv_table[3];
656
    int64_t cy  = 1<<16;
657
    int64_t oy  = 0;
658

    
659
    int64_t yb = 0;
660

    
661
    if (!fullRange) {
662
        cy = (cy*255) / 219;
663
        oy = 16<<16;
664
    } else {
665
        crv = (crv*224) / 255;
666
        cbu = (cbu*224) / 255;
667
        cgu = (cgu*224) / 255;
668
        cgv = (cgv*224) / 255;
669
    }
670

    
671
    cy  = (cy *contrast             ) >> 16;
672
    crv = (crv*contrast * saturation) >> 32;
673
    cbu = (cbu*contrast * saturation) >> 32;
674
    cgu = (cgu*contrast * saturation) >> 32;
675
    cgv = (cgv*contrast * saturation) >> 32;
676
    oy -= 256*brightness;
677

    
678
    //scale coefficients by cy
679
    crv = ((crv << 16) + 0x8000) / cy;
680
    cbu = ((cbu << 16) + 0x8000) / cy;
681
    cgu = ((cgu << 16) + 0x8000) / cy;
682
    cgv = ((cgv << 16) + 0x8000) / cy;
683

    
684
    av_free(c->yuvTable);
685

    
686
    switch (bpp) {
687
    case 1:
688
        c->yuvTable = av_malloc(1024);
689
        y_table = c->yuvTable;
690
        yb = -(384<<16) - oy;
691
        for (i = 0; i < 1024-110; i++) {
692
            y_table[i+110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
693
            yb += cy;
694
        }
695
        fill_table(c->table_gU, 1, cgu, y_table + yoffs);
696
        fill_gv_table(c->table_gV, 1, cgv);
697
        break;
698
    case 4:
699
    case 4|128:
700
        rbase = isRgb ? 3 : 0;
701
        gbase = 1;
702
        bbase = isRgb ? 0 : 3;
703
        c->yuvTable = av_malloc(1024*3);
704
        y_table = c->yuvTable;
705
        yb = -(384<<16) - oy;
706
        for (i = 0; i < 1024-110; i++) {
707
            int yval = av_clip_uint8((yb + 0x8000) >> 16);
708
            y_table[i+110     ] =  (yval >> 7)       << rbase;
709
            y_table[i+ 37+1024] = ((yval + 43) / 85) << gbase;
710
            y_table[i+110+2048] =  (yval >> 7)       << bbase;
711
            yb += cy;
712
        }
713
        fill_table(c->table_rV, 1, crv, y_table + yoffs);
714
        fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
715
        fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
716
        fill_gv_table(c->table_gV, 1, cgv);
717
        break;
718
    case 8:
719
        rbase = isRgb ? 5 : 0;
720
        gbase = isRgb ? 2 : 3;
721
        bbase = isRgb ? 0 : 6;
722
        c->yuvTable = av_malloc(1024*3);
723
        y_table = c->yuvTable;
724
        yb = -(384<<16) - oy;
725
        for (i = 0; i < 1024-38; i++) {
726
            int yval = av_clip_uint8((yb + 0x8000) >> 16);
727
            y_table[i+16     ] = ((yval + 18) / 36) << rbase;
728
            y_table[i+16+1024] = ((yval + 18) / 36) << gbase;
729
            y_table[i+37+2048] = ((yval + 43) / 85) << bbase;
730
            yb += cy;
731
        }
732
        fill_table(c->table_rV, 1, crv, y_table + yoffs);
733
        fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
734
        fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
735
        fill_gv_table(c->table_gV, 1, cgv);
736
        break;
737
    case 12:
738
        rbase = isRgb ? 8 : 0;
739
        gbase = 4;
740
        bbase = isRgb ? 0 : 8;
741
        c->yuvTable = av_malloc(1024*3*2);
742
        y_table16 = c->yuvTable;
743
        yb = -(384<<16) - oy;
744
        for (i = 0; i < 1024; i++) {
745
            uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
746
            y_table16[i     ] = (yval >> 4) << rbase;
747
            y_table16[i+1024] = (yval >> 4) << gbase;
748
            y_table16[i+2048] = (yval >> 4) << bbase;
749
            yb += cy;
750
        }
751
        if (isNotNe)
752
            for (i = 0; i < 1024*3; i++)
753
                y_table16[i] = bswap_16(y_table16[i]);
754
        fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
755
        fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
756
        fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
757
        fill_gv_table(c->table_gV, 2, cgv);
758
        break;
759
    case 15:
760
    case 16:
761
        rbase = isRgb ? bpp - 5 : 0;
762
        gbase = 5;
763
        bbase = isRgb ? 0 : (bpp - 5);
764
        c->yuvTable = av_malloc(1024*3*2);
765
        y_table16 = c->yuvTable;
766
        yb = -(384<<16) - oy;
767
        for (i = 0; i < 1024; i++) {
768
            uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
769
            y_table16[i     ] = (yval >> 3)          << rbase;
770
            y_table16[i+1024] = (yval >> (18 - bpp)) << gbase;
771
            y_table16[i+2048] = (yval >> 3)          << bbase;
772
            yb += cy;
773
        }
774
        if(isNotNe)
775
            for (i = 0; i < 1024*3; i++)
776
                y_table16[i] = bswap_16(y_table16[i]);
777
        fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
778
        fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
779
        fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
780
        fill_gv_table(c->table_gV, 2, cgv);
781
        break;
782
    case 24:
783
    case 48:
784
        c->yuvTable = av_malloc(1024);
785
        y_table = c->yuvTable;
786
        yb = -(384<<16) - oy;
787
        for (i = 0; i < 1024; i++) {
788
            y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
789
            yb += cy;
790
        }
791
        fill_table(c->table_rV, 1, crv, y_table + yoffs);
792
        fill_table(c->table_gU, 1, cgu, y_table + yoffs);
793
        fill_table(c->table_bU, 1, cbu, y_table + yoffs);
794
        fill_gv_table(c->table_gV, 1, cgv);
795
        break;
796
    case 32:
797
        base = (c->dstFormat == PIX_FMT_RGB32_1 || c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;
798
        rbase = base + (isRgb ? 16 : 0);
799
        gbase = base + 8;
800
        bbase = base + (isRgb ? 0 : 16);
801
        needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
802
        if (!needAlpha)
803
            abase = (base + 24) & 31;
804
        c->yuvTable = av_malloc(1024*3*4);
805
        y_table32 = c->yuvTable;
806
        yb = -(384<<16) - oy;
807
        for (i = 0; i < 1024; i++) {
808
            uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
809
            y_table32[i     ] = (yval << rbase) + (needAlpha ? 0 : (255 << abase));
810
            y_table32[i+1024] = yval << gbase;
811
            y_table32[i+2048] = yval << bbase;
812
            yb += cy;
813
        }
814
        fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
815
        fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + 1024);
816
        fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2048);
817
        fill_gv_table(c->table_gV, 4, cgv);
818
        break;
819
    default:
820
        c->yuvTable = NULL;
821
        av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
822
        return -1;
823
    }
824
    return 0;
825
}