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121 lines
4.0 KiB
121 lines
4.0 KiB
/* |
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* rectangle filling function |
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* Copyright (c) 2003 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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/** |
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* @file rectangle.h |
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* useful rectangle filling function |
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* @author Michael Niedermayer <michaelni@gmx.at> |
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*/ |
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#ifndef FFMPEG_RECTANGLE_H |
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#define FFMPEG_RECTANGLE_H |
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#include "common.h" |
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/** |
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* fill a rectangle. |
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* @param h height of the rectangle, should be a constant |
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* @param w width of the rectangle, should be a constant |
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* @param size the size of val (1 or 4), should be a constant |
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*/ |
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static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ |
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uint8_t *p= (uint8_t*)vp; |
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assert(size==1 || size==4); |
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assert(w<=4); |
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w *= size; |
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stride *= size; |
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assert((((long)vp)&(FFMIN(w, STRIDE_ALIGN)-1)) == 0); |
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assert((stride&(w-1))==0); |
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if(w==2){ |
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const uint16_t v= size==4 ? val : val*0x0101; |
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*(uint16_t*)(p + 0*stride)= v; |
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if(h==1) return; |
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*(uint16_t*)(p + 1*stride)= v; |
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if(h==2) return; |
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*(uint16_t*)(p + 2*stride)= v; |
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*(uint16_t*)(p + 3*stride)= v; |
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}else if(w==4){ |
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const uint32_t v= size==4 ? val : val*0x01010101; |
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*(uint32_t*)(p + 0*stride)= v; |
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if(h==1) return; |
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*(uint32_t*)(p + 1*stride)= v; |
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if(h==2) return; |
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*(uint32_t*)(p + 2*stride)= v; |
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*(uint32_t*)(p + 3*stride)= v; |
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}else if(w==8){ |
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//gcc can't optimize 64bit math on x86_32 |
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#ifdef HAVE_FAST_64BIT |
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const uint64_t v= val*0x0100000001ULL; |
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*(uint64_t*)(p + 0*stride)= v; |
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if(h==1) return; |
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*(uint64_t*)(p + 1*stride)= v; |
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if(h==2) return; |
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*(uint64_t*)(p + 2*stride)= v; |
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*(uint64_t*)(p + 3*stride)= v; |
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}else if(w==16){ |
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const uint64_t v= val*0x0100000001ULL; |
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*(uint64_t*)(p + 0+0*stride)= v; |
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*(uint64_t*)(p + 8+0*stride)= v; |
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*(uint64_t*)(p + 0+1*stride)= v; |
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*(uint64_t*)(p + 8+1*stride)= v; |
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if(h==2) return; |
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*(uint64_t*)(p + 0+2*stride)= v; |
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*(uint64_t*)(p + 8+2*stride)= v; |
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*(uint64_t*)(p + 0+3*stride)= v; |
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*(uint64_t*)(p + 8+3*stride)= v; |
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#else |
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*(uint32_t*)(p + 0+0*stride)= val; |
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*(uint32_t*)(p + 4+0*stride)= val; |
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if(h==1) return; |
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*(uint32_t*)(p + 0+1*stride)= val; |
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*(uint32_t*)(p + 4+1*stride)= val; |
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if(h==2) return; |
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*(uint32_t*)(p + 0+2*stride)= val; |
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*(uint32_t*)(p + 4+2*stride)= val; |
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*(uint32_t*)(p + 0+3*stride)= val; |
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*(uint32_t*)(p + 4+3*stride)= val; |
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}else if(w==16){ |
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*(uint32_t*)(p + 0+0*stride)= val; |
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*(uint32_t*)(p + 4+0*stride)= val; |
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*(uint32_t*)(p + 8+0*stride)= val; |
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*(uint32_t*)(p +12+0*stride)= val; |
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*(uint32_t*)(p + 0+1*stride)= val; |
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*(uint32_t*)(p + 4+1*stride)= val; |
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*(uint32_t*)(p + 8+1*stride)= val; |
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*(uint32_t*)(p +12+1*stride)= val; |
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if(h==2) return; |
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*(uint32_t*)(p + 0+2*stride)= val; |
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*(uint32_t*)(p + 4+2*stride)= val; |
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*(uint32_t*)(p + 8+2*stride)= val; |
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*(uint32_t*)(p +12+2*stride)= val; |
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*(uint32_t*)(p + 0+3*stride)= val; |
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*(uint32_t*)(p + 4+3*stride)= val; |
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*(uint32_t*)(p + 8+3*stride)= val; |
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*(uint32_t*)(p +12+3*stride)= val; |
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#endif |
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}else |
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assert(0); |
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assert(h==4); |
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} |
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#endif /* FFMPEG_RECTANGLE_H */
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