0,0 → 1,124 |
/* |
* rectangle filling function |
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
/** |
* @file |
* useful rectangle filling function |
* @author Michael Niedermayer <michaelni@gmx.at> |
*/ |
|
#ifndef AVCODEC_RECTANGLE_H |
#define AVCODEC_RECTANGLE_H |
|
#include "config.h" |
#include "libavutil/common.h" |
#include "libavutil/avassert.h" |
|
/** |
* fill a rectangle. |
* @param h height of the rectangle, should be a constant |
* @param w width of the rectangle, should be a constant |
* @param size the size of val (1, 2 or 4), should be a constant |
*/ |
static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ |
uint8_t *p= (uint8_t*)vp; |
av_assert2(size==1 || size==2 || size==4); |
av_assert2(w<=4); |
|
w *= size; |
stride *= size; |
|
av_assert2((((long)vp)&(FFMIN(w, 8<<(HAVE_NEON|ARCH_PPC|HAVE_MMX))-1)) == 0); |
av_assert2((stride&(w-1))==0); |
if(w==2){ |
const uint16_t v= size==4 ? val : val*0x0101; |
*(uint16_t*)(p + 0*stride)= v; |
if(h==1) return; |
*(uint16_t*)(p + 1*stride)= v; |
if(h==2) return; |
*(uint16_t*)(p + 2*stride)= v; |
*(uint16_t*)(p + 3*stride)= v; |
}else if(w==4){ |
const uint32_t v= size==4 ? val : size==2 ? val*0x00010001 : val*0x01010101; |
*(uint32_t*)(p + 0*stride)= v; |
if(h==1) return; |
*(uint32_t*)(p + 1*stride)= v; |
if(h==2) return; |
*(uint32_t*)(p + 2*stride)= v; |
*(uint32_t*)(p + 3*stride)= v; |
}else if(w==8){ |
//gcc can't optimize 64bit math on x86_32 |
#if HAVE_FAST_64BIT |
const uint64_t v= size==2 ? val*0x0001000100010001ULL : val*0x0100000001ULL; |
*(uint64_t*)(p + 0*stride)= v; |
if(h==1) return; |
*(uint64_t*)(p + 1*stride)= v; |
if(h==2) return; |
*(uint64_t*)(p + 2*stride)= v; |
*(uint64_t*)(p + 3*stride)= v; |
}else if(w==16){ |
const uint64_t v= val*0x0100000001ULL; |
*(uint64_t*)(p + 0+0*stride)= v; |
*(uint64_t*)(p + 8+0*stride)= v; |
*(uint64_t*)(p + 0+1*stride)= v; |
*(uint64_t*)(p + 8+1*stride)= v; |
if(h==2) return; |
*(uint64_t*)(p + 0+2*stride)= v; |
*(uint64_t*)(p + 8+2*stride)= v; |
*(uint64_t*)(p + 0+3*stride)= v; |
*(uint64_t*)(p + 8+3*stride)= v; |
#else |
const uint32_t v= size==2 ? val*0x00010001 : val; |
*(uint32_t*)(p + 0+0*stride)= v; |
*(uint32_t*)(p + 4+0*stride)= v; |
if(h==1) return; |
*(uint32_t*)(p + 0+1*stride)= v; |
*(uint32_t*)(p + 4+1*stride)= v; |
if(h==2) return; |
*(uint32_t*)(p + 0+2*stride)= v; |
*(uint32_t*)(p + 4+2*stride)= v; |
*(uint32_t*)(p + 0+3*stride)= v; |
*(uint32_t*)(p + 4+3*stride)= v; |
}else if(w==16){ |
*(uint32_t*)(p + 0+0*stride)= val; |
*(uint32_t*)(p + 4+0*stride)= val; |
*(uint32_t*)(p + 8+0*stride)= val; |
*(uint32_t*)(p +12+0*stride)= val; |
*(uint32_t*)(p + 0+1*stride)= val; |
*(uint32_t*)(p + 4+1*stride)= val; |
*(uint32_t*)(p + 8+1*stride)= val; |
*(uint32_t*)(p +12+1*stride)= val; |
if(h==2) return; |
*(uint32_t*)(p + 0+2*stride)= val; |
*(uint32_t*)(p + 4+2*stride)= val; |
*(uint32_t*)(p + 8+2*stride)= val; |
*(uint32_t*)(p +12+2*stride)= val; |
*(uint32_t*)(p + 0+3*stride)= val; |
*(uint32_t*)(p + 4+3*stride)= val; |
*(uint32_t*)(p + 8+3*stride)= val; |
*(uint32_t*)(p +12+3*stride)= val; |
#endif |
}else |
av_assert2(0); |
av_assert2(h==4); |
} |
|
#endif /* AVCODEC_RECTANGLE_H */ |