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Diffstat (limited to 'media/ffvpx/libavcodec/rectangle.h')
| -rw-r--r-- | media/ffvpx/libavcodec/rectangle.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/rectangle.h b/media/ffvpx/libavcodec/rectangle.h new file mode 100644 index 000000000..df7c18a4e --- /dev/null +++ b/media/ffvpx/libavcodec/rectangle.h @@ -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 cannot optimize 64-bit 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 */ |