| /* |
| * 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 */ |
