1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libavcodec/rectangle.h	Tue Sep 25 15:55:33 2012 +0200
     1.3 @@ -0,0 +1,92 @@
     1.4 +/*
     1.5 + * rectangle filling function
     1.6 + * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
     1.7 + *
     1.8 + * This file is part of FFmpeg.
     1.9 + *
    1.10 + * FFmpeg is free software; you can redistribute it and/or
    1.11 + * modify it under the terms of the GNU Lesser General Public
    1.12 + * License as published by the Free Software Foundation; either
    1.13 + * version 2.1 of the License, or (at your option) any later version.
    1.14 + *
    1.15 + * FFmpeg is distributed in the hope that it will be useful,
    1.16 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.17 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.18 + * Lesser General Public License for more details.
    1.19 + *
    1.20 + * You should have received a copy of the GNU Lesser General Public
    1.21 + * License along with FFmpeg; if not, write to the Free Software
    1.22 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    1.23 + */
    1.24 +
    1.25 +/**
    1.26 + * @file
    1.27 + * useful rectangle filling function
    1.28 + * @author Michael Niedermayer <michaelni@gmx.at>
    1.29 + */
    1.30 +
    1.31 +#ifndef AVCODEC_RECTANGLE_H
    1.32 +#define AVCODEC_RECTANGLE_H
    1.33 +
    1.34 +#include <assert.h>
    1.35 +//#include "config.h"
    1.36 +#include "libavutil/common.h"
    1.37 +#include "dsputil.h"
    1.38 +
    1.39 +/**
    1.40 + * fill a rectangle.
    1.41 + * @param h height of the rectangle, should be a constant
    1.42 + * @param w width of the rectangle, should be a constant
    1.43 + * @param size the size of val (1, 2 or 4), should be a constant
    1.44 + */
    1.45 +static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){
    1.46 +    uint8_t *p= (uint8_t*)vp;
    1.47 +    assert(size==1 || size==2 || size==4);
    1.48 +    assert(w<=4);
    1.49 +
    1.50 +    w      *= size;
    1.51 +    stride *= size;
    1.52 +
    1.53 +    assert((((long)vp)&(FFMIN(w, STRIDE_ALIGN)-1)) == 0);
    1.54 +    assert((stride&(w-1))==0);
    1.55 +    if(w==2){
    1.56 +        const uint16_t v= size==4 ? val : val*0x0101;
    1.57 +        *(uint16_t*)(p + 0*stride)= v;
    1.58 +        if(h==1) return;
    1.59 +        *(uint16_t*)(p + 1*stride)= v;
    1.60 +        if(h==2) return;
    1.61 +        *(uint16_t*)(p + 2*stride)= v;
    1.62 +        *(uint16_t*)(p + 3*stride)= v;
    1.63 +    }else if(w==4){
    1.64 +        const uint32_t v= size==4 ? val : size==2 ? val*0x00010001 : val*0x01010101;
    1.65 +        *(uint32_t*)(p + 0*stride)= v;
    1.66 +        if(h==1) return;
    1.67 +        *(uint32_t*)(p + 1*stride)= v;
    1.68 +        if(h==2) return;
    1.69 +        *(uint32_t*)(p + 2*stride)= v;
    1.70 +        *(uint32_t*)(p + 3*stride)= v;
    1.71 +    }else if(w==8){
    1.72 +        const uint64_t v=  size==2 ? val*0x0001000100010001ULL : val*0x0100000001ULL;
    1.73 +        *(uint64_t*)(p + 0*stride)= v;
    1.74 +        if(h==1) return;
    1.75 +        *(uint64_t*)(p + 1*stride)= v;
    1.76 +        if(h==2) return;
    1.77 +        *(uint64_t*)(p + 2*stride)= v;
    1.78 +        *(uint64_t*)(p + 3*stride)= v;
    1.79 +    }else if(w==16){
    1.80 +        const uint64_t v= val*0x0100000001ULL;
    1.81 +        *(uint64_t*)(p + 0+0*stride)= v;
    1.82 +        *(uint64_t*)(p + 8+0*stride)= v;
    1.83 +        *(uint64_t*)(p + 0+1*stride)= v;
    1.84 +        *(uint64_t*)(p + 8+1*stride)= v;
    1.85 +        if(h==2) return;
    1.86 +        *(uint64_t*)(p + 0+2*stride)= v;
    1.87 +        *(uint64_t*)(p + 8+2*stride)= v;
    1.88 +        *(uint64_t*)(p + 0+3*stride)= v;
    1.89 +        *(uint64_t*)(p + 8+3*stride)= v;
    1.90 +    }else
    1.91 +        assert(0);
    1.92 +    assert(h==4);
    1.93 +}
    1.94 +
    1.95 +#endif /* AVCODEC_RECTANGLE_H */