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ffmpeg / libswscale / yuv2rgb.c @ 5a011d8b

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1 e76709d8 Kostya Shishkov
/*
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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"
36 e76709d8 Kostya Shishkov
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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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52 3f3dc76c David Conrad
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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59 e76709d8 Kostya Shishkov
#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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66 df226e63 Kostya Shishkov
#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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90 68e7f482 Kostya Shishkov
#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) {\
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            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--) {\
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            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;\
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        }\
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        if (c->dstW & 4) {\
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            int av_unused Y, U, V;\
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#define ENDYUV2RGBFUNC()\
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        }\
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    }\
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    return srcSliceH;\
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}
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#define CLOSEYUV2RGBFUNC(dst_delta)\
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    ENDYUV2RGBLINE(dst_delta)\
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    ENDYUV2RGBFUNC()
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150 68e7f482 Kostya Shishkov
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);
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    PUTRGB48(dst_1,py_1,2);
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    PUTRGB48(dst_2,py_2,2);
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    LOADCHROMA(3);
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    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);
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    PUTRGB(dst_1,py_1,2);
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    PUTRGB(dst_2,py_2,2);
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    LOADCHROMA(3);
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    PUTRGB(dst_2,py_2,3);
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    PUTRGB(dst_1,py_1,3);
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ENDYUV2RGBLINE(8)
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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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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);
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    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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    LOADCHROMA(2);
212 df226e63 Kostya Shishkov
    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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    LOADCHROMA(3);
216 df226e63 Kostya Shishkov
    PUTRGBA(dst_2,py_2,pa_1,3,24);
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    PUTRGBA(dst_1,py_1,pa_2,3,24);
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    pa_1 += 8;\
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    pa_2 += 8;\
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ENDYUV2RGBLINE(8)
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    LOADCHROMA(0);
222 df226e63 Kostya Shishkov
    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);
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    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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ENDYUV2RGBFUNC()
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YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)
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    LOADCHROMA(0);
232 df226e63 Kostya Shishkov
    PUTRGBA(dst_1,py_1,pa_1,0,0);
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    PUTRGBA(dst_2,py_2,pa_2,0,0);
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    LOADCHROMA(1);
236 df226e63 Kostya Shishkov
    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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    LOADCHROMA(2);
240 df226e63 Kostya Shishkov
    PUTRGBA(dst_1,py_1,pa_1,2,0);
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    PUTRGBA(dst_2,py_2,pa_2,2,0);
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    LOADCHROMA(3);
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    PUTRGBA(dst_2,py_2,pa_2,3,0);
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    PUTRGBA(dst_1,py_1,pa_1,3,0);
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    pa_1 += 8;\
247
    pa_2 += 8;\
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ENDYUV2RGBLINE(8)
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    LOADCHROMA(0);
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    PUTRGBA(dst_1,py_1,pa_1,0,0);
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    PUTRGBA(dst_2,py_2,pa_2,0,0);
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    LOADCHROMA(1);
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    PUTRGBA(dst_2,py_2,pa_2,1,0);
255
    PUTRGBA(dst_1,py_1,pa_1,1,0);
256 3acd545f Cédric Schieli
ENDYUV2RGBFUNC()
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YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)
259 e76709d8 Kostya Shishkov
    LOADCHROMA(0);
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    PUTRGB24(dst_1,py_1,0);
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    PUTRGB24(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTRGB24(dst_2,py_2,1);
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    PUTRGB24(dst_1,py_1,1);
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    LOADCHROMA(2);
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    PUTRGB24(dst_1,py_1,2);
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    PUTRGB24(dst_2,py_2,2);
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    LOADCHROMA(3);
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    PUTRGB24(dst_2,py_2,3);
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    PUTRGB24(dst_1,py_1,3);
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ENDYUV2RGBLINE(24)
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    LOADCHROMA(0);
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    PUTRGB24(dst_1,py_1,0);
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    PUTRGB24(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTRGB24(dst_2,py_2,1);
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    PUTRGB24(dst_1,py_1,1);
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ENDYUV2RGBFUNC()
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284
// only trivial mods from yuv2rgb_c_24_rgb
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YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)
286 e76709d8 Kostya Shishkov
    LOADCHROMA(0);
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    PUTBGR24(dst_1,py_1,0);
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    PUTBGR24(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTBGR24(dst_2,py_2,1);
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    PUTBGR24(dst_1,py_1,1);
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    LOADCHROMA(2);
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    PUTBGR24(dst_1,py_1,2);
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    PUTBGR24(dst_2,py_2,2);
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    LOADCHROMA(3);
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    PUTBGR24(dst_2,py_2,3);
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    PUTBGR24(dst_1,py_1,3);
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ENDYUV2RGBLINE(24)
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    LOADCHROMA(0);
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    PUTBGR24(dst_1,py_1,0);
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    PUTBGR24(dst_2,py_2,0);
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    LOADCHROMA(1);
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    PUTBGR24(dst_2,py_2,1);
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    PUTBGR24(dst_1,py_1,1);
309
ENDYUV2RGBFUNC()
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311
// This is exactly the same code as yuv2rgb_c_32 except for the types of
312
// r, g, b, dst_1, dst_2
313 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_16, uint16_t, 0)
314 e76709d8 Kostya Shishkov
    LOADCHROMA(0);
315 df226e63 Kostya Shishkov
    PUTRGB(dst_1,py_1,0);
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    PUTRGB(dst_2,py_2,0);
317 e76709d8 Kostya Shishkov
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    LOADCHROMA(1);
319 df226e63 Kostya Shishkov
    PUTRGB(dst_2,py_2,1);
320
    PUTRGB(dst_1,py_1,1);
321 e76709d8 Kostya Shishkov
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    LOADCHROMA(2);
323 df226e63 Kostya Shishkov
    PUTRGB(dst_1,py_1,2);
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    PUTRGB(dst_2,py_2,2);
325 e76709d8 Kostya Shishkov
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    LOADCHROMA(3);
327 df226e63 Kostya Shishkov
    PUTRGB(dst_2,py_2,3);
328
    PUTRGB(dst_1,py_1,3);
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CLOSEYUV2RGBFUNC(8)
330
331 3c52d484 Zuxy Meng
#if 0 // Currently unused
332 e76709d8 Kostya Shishkov
// This is exactly the same code as yuv2rgb_c_32 except for the types of
333
// r, g, b, dst_1, dst_2
334 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_8, uint8_t, 0)
335 e76709d8 Kostya Shishkov
    LOADCHROMA(0);
336 df226e63 Kostya Shishkov
    PUTRGB(dst_1,py_1,0);
337
    PUTRGB(dst_2,py_2,0);
338 e76709d8 Kostya Shishkov

339
    LOADCHROMA(1);
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    PUTRGB(dst_2,py_2,1);
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    PUTRGB(dst_1,py_1,1);
342 e76709d8 Kostya Shishkov

343
    LOADCHROMA(2);
344 df226e63 Kostya Shishkov
    PUTRGB(dst_1,py_1,2);
345
    PUTRGB(dst_2,py_2,2);
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347
    LOADCHROMA(3);
348 df226e63 Kostya Shishkov
    PUTRGB(dst_2,py_2,3);
349
    PUTRGB(dst_1,py_1,3);
350 e76709d8 Kostya Shishkov
CLOSEYUV2RGBFUNC(8)
351 3c52d484 Zuxy Meng
#endif
352 e76709d8 Kostya Shishkov
353
// r, g, b, dst_1, dst_2
354 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)
355 e76709d8 Kostya Shishkov
    const uint8_t *d32 = dither_8x8_32[y&7];
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    const uint8_t *d64 = dither_8x8_73[y&7];
357
#define PUTRGB8(dst,src,i,o)                                    \
358
    Y = src[2*i];                                               \
359
    dst[2*i]   = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]]; \
360
    Y = src[2*i+1];                                             \
361
    dst[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];
362
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    LOADCHROMA(0);
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    PUTRGB8(dst_1,py_1,0,0);
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    PUTRGB8(dst_2,py_2,0,0+8);
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    LOADCHROMA(1);
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    PUTRGB8(dst_2,py_2,1,2+8);
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    PUTRGB8(dst_1,py_1,1,2);
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    LOADCHROMA(2);
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    PUTRGB8(dst_1,py_1,2,4);
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    PUTRGB8(dst_2,py_2,2,4+8);
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    LOADCHROMA(3);
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    PUTRGB8(dst_2,py_2,3,6+8);
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    PUTRGB8(dst_1,py_1,3,6);
378
CLOSEYUV2RGBFUNC(8)
379
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#if 0 // Currently unused
381 e76709d8 Kostya Shishkov
// This is exactly the same code as yuv2rgb_c_32 except for the types of
382
// r, g, b, dst_1, dst_2
383 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_4, uint8_t, 0)
384 e76709d8 Kostya Shishkov
    int acc;
385
#define PUTRGB4(dst,src,i)          \
386
    Y = src[2*i];                   \
387
    acc = r[Y] + g[Y] + b[Y];       \
388
    Y = src[2*i+1];                 \
389
    acc |= (r[Y] + g[Y] + b[Y])<<4; \
390
    dst[i] = acc;
391

392
    LOADCHROMA(0);
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    PUTRGB4(dst_1,py_1,0);
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    PUTRGB4(dst_2,py_2,0);
395

396
    LOADCHROMA(1);
397
    PUTRGB4(dst_2,py_2,1);
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    PUTRGB4(dst_1,py_1,1);
399

400
    LOADCHROMA(2);
401
    PUTRGB4(dst_1,py_1,2);
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    PUTRGB4(dst_2,py_2,2);
403

404
    LOADCHROMA(3);
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    PUTRGB4(dst_2,py_2,3);
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    PUTRGB4(dst_1,py_1,3);
407
CLOSEYUV2RGBFUNC(4)
408 3c52d484 Zuxy Meng
#endif
409 e76709d8 Kostya Shishkov
410 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)
411 e76709d8 Kostya Shishkov
    const uint8_t *d64 =  dither_8x8_73[y&7];
412
    const uint8_t *d128 = dither_8x8_220[y&7];
413
    int acc;
414
415
#define PUTRGB4D(dst,src,i,o)                                     \
416
    Y = src[2*i];                                                 \
417
    acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];        \
418
    Y = src[2*i+1];                                               \
419
    acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;  \
420
    dst[i]= acc;
421
422
    LOADCHROMA(0);
423
    PUTRGB4D(dst_1,py_1,0,0);
424
    PUTRGB4D(dst_2,py_2,0,0+8);
425
426
    LOADCHROMA(1);
427
    PUTRGB4D(dst_2,py_2,1,2+8);
428
    PUTRGB4D(dst_1,py_1,1,2);
429
430
    LOADCHROMA(2);
431
    PUTRGB4D(dst_1,py_1,2,4);
432
    PUTRGB4D(dst_2,py_2,2,4+8);
433
434
    LOADCHROMA(3);
435
    PUTRGB4D(dst_2,py_2,3,6+8);
436
    PUTRGB4D(dst_1,py_1,3,6);
437
CLOSEYUV2RGBFUNC(4)
438
439 3c52d484 Zuxy Meng
#if 0 // Currently unused
440 e76709d8 Kostya Shishkov
// This is exactly the same code as yuv2rgb_c_32 except for the types of
441
// r, g, b, dst_1, dst_2
442 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_4b, uint8_t, 0)
443 e76709d8 Kostya Shishkov
    LOADCHROMA(0);
444 df226e63 Kostya Shishkov
    PUTRGB(dst_1,py_1,0);
445
    PUTRGB(dst_2,py_2,0);
446 e76709d8 Kostya Shishkov

447
    LOADCHROMA(1);
448 df226e63 Kostya Shishkov
    PUTRGB(dst_2,py_2,1);
449
    PUTRGB(dst_1,py_1,1);
450 e76709d8 Kostya Shishkov

451
    LOADCHROMA(2);
452 df226e63 Kostya Shishkov
    PUTRGB(dst_1,py_1,2);
453
    PUTRGB(dst_2,py_2,2);
454 e76709d8 Kostya Shishkov

455
    LOADCHROMA(3);
456 df226e63 Kostya Shishkov
    PUTRGB(dst_2,py_2,3);
457
    PUTRGB(dst_1,py_1,3);
458 e76709d8 Kostya Shishkov
CLOSEYUV2RGBFUNC(8)
459 3c52d484 Zuxy Meng
#endif
460 e76709d8 Kostya Shishkov
461 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)
462 e76709d8 Kostya Shishkov
    const uint8_t *d64 =  dither_8x8_73[y&7];
463
    const uint8_t *d128 = dither_8x8_220[y&7];
464
465
#define PUTRGB4DB(dst,src,i,o)                                    \
466
    Y = src[2*i];                                                 \
467
    dst[2*i]   = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]]; \
468
    Y = src[2*i+1];                                               \
469
    dst[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];
470
471
    LOADCHROMA(0);
472
    PUTRGB4DB(dst_1,py_1,0,0);
473
    PUTRGB4DB(dst_2,py_2,0,0+8);
474
475
    LOADCHROMA(1);
476
    PUTRGB4DB(dst_2,py_2,1,2+8);
477
    PUTRGB4DB(dst_1,py_1,1,2);
478
479
    LOADCHROMA(2);
480
    PUTRGB4DB(dst_1,py_1,2,4);
481
    PUTRGB4DB(dst_2,py_2,2,4+8);
482
483
    LOADCHROMA(3);
484
    PUTRGB4DB(dst_2,py_2,3,6+8);
485
    PUTRGB4DB(dst_1,py_1,3,6);
486
CLOSEYUV2RGBFUNC(8)
487
488 9a10a076 Cédric Schieli
YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)
489 e76709d8 Kostya Shishkov
        const uint8_t *d128 = dither_8x8_220[y&7];
490
        char out_1 = 0, out_2 = 0;
491
        g= c->table_gU[128] + c->table_gV[128];
492
493
#define PUTRGB1(out,src,i,o)    \
494
    Y = src[2*i];               \
495
    out+= out + g[Y+d128[0+o]]; \
496
    Y = src[2*i+1];             \
497
    out+= out + g[Y+d128[1+o]];
498
499
    PUTRGB1(out_1,py_1,0,0);
500
    PUTRGB1(out_2,py_2,0,0+8);
501
502
    PUTRGB1(out_2,py_2,1,2+8);
503
    PUTRGB1(out_1,py_1,1,2);
504
505
    PUTRGB1(out_1,py_1,2,4);
506
    PUTRGB1(out_2,py_2,2,4+8);
507
508
    PUTRGB1(out_2,py_2,3,6+8);
509
    PUTRGB1(out_1,py_1,3,6);
510
511
    dst_1[0]= out_1;
512
    dst_2[0]= out_2;
513
CLOSEYUV2RGBFUNC(1)
514
515 780daf2b Diego Biurrun
SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
516 e76709d8 Kostya Shishkov
{
517
    SwsFunc t = NULL;
518
#if (HAVE_MMX2 || HAVE_MMX) && CONFIG_GPL
519 befa8e66 Ramiro Polla
     t = ff_yuv2rgb_init_mmx(c);
520 e76709d8 Kostya Shishkov
#endif
521
#if HAVE_VIS
522 780daf2b Diego Biurrun
    t = ff_yuv2rgb_init_vis(c);
523 e76709d8 Kostya Shishkov
#endif
524
#if CONFIG_MLIB
525 780daf2b Diego Biurrun
    t = ff_yuv2rgb_init_mlib(c);
526 e76709d8 Kostya Shishkov
#endif
527 29ce0433 Diego Biurrun
#if HAVE_ALTIVEC
528 e76709d8 Kostya Shishkov
    if (c->flags & SWS_CPU_CAPS_ALTIVEC)
529 780daf2b Diego Biurrun
        t = ff_yuv2rgb_init_altivec(c);
530 e76709d8 Kostya Shishkov
#endif
531
532
#if ARCH_BFIN
533
    if (c->flags & SWS_CPU_CAPS_BFIN)
534 780daf2b Diego Biurrun
        t = ff_yuv2rgb_get_func_ptr_bfin(c);
535 e76709d8 Kostya Shishkov
#endif
536
537
    if (t)
538
        return t;
539
540 d5206d3d Zuxy Meng
    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));
541 e76709d8 Kostya Shishkov
542
    switch (c->dstFormat) {
543 68e7f482 Kostya Shishkov
    case PIX_FMT_RGB48BE:
544
    case PIX_FMT_RGB48LE:    return yuv2rgb_c_48;
545 3acd545f Cédric Schieli
    case PIX_FMT_ARGB:
546
    case PIX_FMT_ABGR:       if (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) return yuva2argb_c;
547
    case PIX_FMT_RGBA:
548
    case PIX_FMT_BGRA:       return (CONFIG_SWSCALE_ALPHA && c->srcFormat == PIX_FMT_YUVA420P) ? yuva2rgba_c : yuv2rgb_c_32;
549 e76709d8 Kostya Shishkov
    case PIX_FMT_RGB24:      return yuv2rgb_c_24_rgb;
550
    case PIX_FMT_BGR24:      return yuv2rgb_c_24_bgr;
551
    case PIX_FMT_RGB565:
552
    case PIX_FMT_BGR565:
553
    case PIX_FMT_RGB555:
554
    case PIX_FMT_BGR555:     return yuv2rgb_c_16;
555
    case PIX_FMT_RGB8:
556
    case PIX_FMT_BGR8:       return yuv2rgb_c_8_ordered_dither;
557
    case PIX_FMT_RGB4:
558
    case PIX_FMT_BGR4:       return yuv2rgb_c_4_ordered_dither;
559
    case PIX_FMT_RGB4_BYTE:
560
    case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;
561
    case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;
562
    default:
563
        assert(0);
564
    }
565
    return NULL;
566
}
567
568
static void fill_table(uint8_t* table[256], const int elemsize, const int inc, uint8_t *y_table)
569
{
570
    int i;
571
    int64_t cb = 0;
572
573
    y_table -= elemsize * (inc >> 9);
574
575
    for (i = 0; i < 256; i++) {
576
        table[i] = y_table + elemsize * (cb >> 16);
577
        cb += inc;
578
    }
579
}
580
581
static void fill_gv_table(int table[256], const int elemsize, const int inc)
582
{
583
    int i;
584
    int64_t cb = 0;
585
    int off = -(inc >> 9);
586
587
    for (i = 0; i < 256; i++) {
588
        table[i] = elemsize * (off + (cb >> 16));
589
        cb += inc;
590
    }
591
}
592
593 780daf2b Diego Biurrun
av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange,
594
                                     int brightness, int contrast, int saturation)
595 e76709d8 Kostya Shishkov
{
596
    const int isRgb =      c->dstFormat==PIX_FMT_RGB32
597
                        || c->dstFormat==PIX_FMT_RGB32_1
598
                        || c->dstFormat==PIX_FMT_BGR24
599
                        || c->dstFormat==PIX_FMT_RGB565
600
                        || c->dstFormat==PIX_FMT_RGB555
601
                        || c->dstFormat==PIX_FMT_RGB8
602
                        || c->dstFormat==PIX_FMT_RGB4
603
                        || c->dstFormat==PIX_FMT_RGB4_BYTE
604
                        || c->dstFormat==PIX_FMT_MONOBLACK;
605 30b61475 Stefano Sabatini
    const int bpp = c->dstFormatBpp;
606 e76709d8 Kostya Shishkov
    uint8_t *y_table;
607
    uint16_t *y_table16;
608
    uint32_t *y_table32;
609 3acd545f Cédric Schieli
    int i, base, rbase, gbase, bbase, abase, needAlpha;
610 e76709d8 Kostya Shishkov
    const int yoffs = fullRange ? 384 : 326;
611
612
    int64_t crv =  inv_table[0];
613
    int64_t cbu =  inv_table[1];
614
    int64_t cgu = -inv_table[2];
615
    int64_t cgv = -inv_table[3];
616
    int64_t cy  = 1<<16;
617
    int64_t oy  = 0;
618
619
    int64_t yb = 0;
620
621
    if (!fullRange) {
622
        cy = (cy*255) / 219;
623
        oy = 16<<16;
624
    } else {
625
        crv = (crv*224) / 255;
626
        cbu = (cbu*224) / 255;
627
        cgu = (cgu*224) / 255;
628
        cgv = (cgv*224) / 255;
629
    }
630
631
    cy  = (cy *contrast             ) >> 16;
632
    crv = (crv*contrast * saturation) >> 32;
633
    cbu = (cbu*contrast * saturation) >> 32;
634
    cgu = (cgu*contrast * saturation) >> 32;
635
    cgv = (cgv*contrast * saturation) >> 32;
636
    oy -= 256*brightness;
637
638
    //scale coefficients by cy
639
    crv = ((crv << 16) + 0x8000) / cy;
640
    cbu = ((cbu << 16) + 0x8000) / cy;
641
    cgu = ((cgu << 16) + 0x8000) / cy;
642
    cgv = ((cgv << 16) + 0x8000) / cy;
643
644
    av_free(c->yuvTable);
645
646
    switch (bpp) {
647
    case 1:
648
        c->yuvTable = av_malloc(1024);
649
        y_table = c->yuvTable;
650
        yb = -(384<<16) - oy;
651
        for (i = 0; i < 1024-110; i++) {
652
            y_table[i+110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;
653
            yb += cy;
654
        }
655
        fill_table(c->table_gU, 1, cgu, y_table + yoffs);
656
        fill_gv_table(c->table_gV, 1, cgv);
657
        break;
658
    case 4:
659
    case 4|128:
660
        rbase = isRgb ? 3 : 0;
661
        gbase = 1;
662
        bbase = isRgb ? 0 : 3;
663
        c->yuvTable = av_malloc(1024*3);
664
        y_table = c->yuvTable;
665
        yb = -(384<<16) - oy;
666
        for (i = 0; i < 1024-110; i++) {
667
            int yval = av_clip_uint8((yb + 0x8000) >> 16);
668
            y_table[i+110     ] =  (yval >> 7)       << rbase;
669
            y_table[i+ 37+1024] = ((yval + 43) / 85) << gbase;
670
            y_table[i+110+2048] =  (yval >> 7)       << bbase;
671
            yb += cy;
672
        }
673
        fill_table(c->table_rV, 1, crv, y_table + yoffs);
674
        fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
675
        fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
676
        fill_gv_table(c->table_gV, 1, cgv);
677
        break;
678
    case 8:
679
        rbase = isRgb ? 5 : 0;
680
        gbase = isRgb ? 2 : 3;
681
        bbase = isRgb ? 0 : 6;
682
        c->yuvTable = av_malloc(1024*3);
683
        y_table = c->yuvTable;
684
        yb = -(384<<16) - oy;
685
        for (i = 0; i < 1024-38; i++) {
686
            int yval = av_clip_uint8((yb + 0x8000) >> 16);
687
            y_table[i+16     ] = ((yval + 18) / 36) << rbase;
688
            y_table[i+16+1024] = ((yval + 18) / 36) << gbase;
689
            y_table[i+37+2048] = ((yval + 43) / 85) << bbase;
690
            yb += cy;
691
        }
692
        fill_table(c->table_rV, 1, crv, y_table + yoffs);
693
        fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);
694
        fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);
695
        fill_gv_table(c->table_gV, 1, cgv);
696
        break;
697
    case 15:
698
    case 16:
699
        rbase = isRgb ? bpp - 5 : 0;
700
        gbase = 5;
701
        bbase = isRgb ? 0 : (bpp - 5);
702
        c->yuvTable = av_malloc(1024*3*2);
703
        y_table16 = c->yuvTable;
704
        yb = -(384<<16) - oy;
705
        for (i = 0; i < 1024; i++) {
706
            uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
707
            y_table16[i     ] = (yval >> 3)          << rbase;
708
            y_table16[i+1024] = (yval >> (18 - bpp)) << gbase;
709
            y_table16[i+2048] = (yval >> 3)          << bbase;
710
            yb += cy;
711
        }
712
        fill_table(c->table_rV, 2, crv, y_table16 + yoffs);
713
        fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);
714
        fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);
715
        fill_gv_table(c->table_gV, 2, cgv);
716
        break;
717
    case 24:
718 68e7f482 Kostya Shishkov
    case 48:
719 e76709d8 Kostya Shishkov
        c->yuvTable = av_malloc(1024);
720
        y_table = c->yuvTable;
721
        yb = -(384<<16) - oy;
722
        for (i = 0; i < 1024; i++) {
723
            y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);
724
            yb += cy;
725
        }
726
        fill_table(c->table_rV, 1, crv, y_table + yoffs);
727
        fill_table(c->table_gU, 1, cgu, y_table + yoffs);
728
        fill_table(c->table_bU, 1, cbu, y_table + yoffs);
729
        fill_gv_table(c->table_gV, 1, cgv);
730
        break;
731
    case 32:
732
        base = (c->dstFormat == PIX_FMT_RGB32_1 || c->dstFormat == PIX_FMT_BGR32_1) ? 8 : 0;
733
        rbase = base + (isRgb ? 16 : 0);
734
        gbase = base + 8;
735
        bbase = base + (isRgb ? 0 : 16);
736 3acd545f Cédric Schieli
        needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);
737
        if (!needAlpha)
738
            abase = (base + 24) & 31;
739 e76709d8 Kostya Shishkov
        c->yuvTable = av_malloc(1024*3*4);
740
        y_table32 = c->yuvTable;
741
        yb = -(384<<16) - oy;
742
        for (i = 0; i < 1024; i++) {
743
            uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);
744 3acd545f Cédric Schieli
            y_table32[i     ] = (yval << rbase) + (needAlpha ? 0 : (255 << abase));
745 e76709d8 Kostya Shishkov
            y_table32[i+1024] = yval << gbase;
746
            y_table32[i+2048] = yval << bbase;
747
            yb += cy;
748
        }
749
        fill_table(c->table_rV, 4, crv, y_table32 + yoffs);
750
        fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + 1024);
751
        fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2048);
752
        fill_gv_table(c->table_gV, 4, cgv);
753
        break;
754
    default:
755
        c->yuvTable = NULL;
756
        av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);
757
        return -1;
758
    }
759
    return 0;
760
}