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annotate libavcodec/rectangle.h @ 9:ea1ba68cf0ed

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update to match api changes + add sscc produced source
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Wed, 05 Jun 2013 14:43:26 +0200
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nengel@2 1 /*
nengel@2 2 * rectangle filling function
nengel@2 3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
nengel@2 4 *
nengel@2 5 * This file is part of FFmpeg.
nengel@2 6 *
nengel@2 7 * FFmpeg is free software; you can redistribute it and/or
nengel@2 8 * modify it under the terms of the GNU Lesser General Public
nengel@2 9 * License as published by the Free Software Foundation; either
nengel@2 10 * version 2.1 of the License, or (at your option) any later version.
nengel@2 11 *
nengel@2 12 * FFmpeg is distributed in the hope that it will be useful,
nengel@2 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
nengel@2 15 * Lesser General Public License for more details.
nengel@2 16 *
nengel@2 17 * You should have received a copy of the GNU Lesser General Public
nengel@2 18 * License along with FFmpeg; if not, write to the Free Software
nengel@2 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2 20 */
nengel@2 21
nengel@2 22 /**
nengel@2 23 * @file
nengel@2 24 * useful rectangle filling function
nengel@2 25 * @author Michael Niedermayer <michaelni@gmx.at>
nengel@2 26 */
nengel@2 27
nengel@2 28 #ifndef AVCODEC_RECTANGLE_H
nengel@2 29 #define AVCODEC_RECTANGLE_H
nengel@2 30
nengel@2 31 #include <assert.h>
nengel@2 32 //#include "config.h"
nengel@2 33 #include "libavutil/common.h"
nengel@2 34 #include "dsputil.h"
nengel@2 35
nengel@2 36 /**
nengel@2 37 * fill a rectangle.
nengel@2 38 * @param h height of the rectangle, should be a constant
nengel@2 39 * @param w width of the rectangle, should be a constant
nengel@2 40 * @param size the size of val (1, 2 or 4), should be a constant
nengel@2 41 */
nengel@2 42 static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){
nengel@2 43 uint8_t *p= (uint8_t*)vp;
nengel@2 44 assert(size==1 || size==2 || size==4);
nengel@2 45 assert(w<=4);
nengel@2 46
nengel@2 47 w *= size;
nengel@2 48 stride *= size;
nengel@2 49
nengel@2 50 assert((((long)vp)&(FFMIN(w, STRIDE_ALIGN)-1)) == 0);
nengel@2 51 assert((stride&(w-1))==0);
nengel@2 52 if(w==2){
nengel@2 53 const uint16_t v= size==4 ? val : val*0x0101;
nengel@2 54 *(uint16_t*)(p + 0*stride)= v;
nengel@2 55 if(h==1) return;
nengel@2 56 *(uint16_t*)(p + 1*stride)= v;
nengel@2 57 if(h==2) return;
nengel@2 58 *(uint16_t*)(p + 2*stride)= v;
nengel@2 59 *(uint16_t*)(p + 3*stride)= v;
nengel@2 60 }else if(w==4){
nengel@2 61 const uint32_t v= size==4 ? val : size==2 ? val*0x00010001 : val*0x01010101;
nengel@2 62 *(uint32_t*)(p + 0*stride)= v;
nengel@2 63 if(h==1) return;
nengel@2 64 *(uint32_t*)(p + 1*stride)= v;
nengel@2 65 if(h==2) return;
nengel@2 66 *(uint32_t*)(p + 2*stride)= v;
nengel@2 67 *(uint32_t*)(p + 3*stride)= v;
nengel@2 68 }else if(w==8){
nengel@2 69 const uint64_t v= size==2 ? val*0x0001000100010001ULL : val*0x0100000001ULL;
nengel@2 70 *(uint64_t*)(p + 0*stride)= v;
nengel@2 71 if(h==1) return;
nengel@2 72 *(uint64_t*)(p + 1*stride)= v;
nengel@2 73 if(h==2) return;
nengel@2 74 *(uint64_t*)(p + 2*stride)= v;
nengel@2 75 *(uint64_t*)(p + 3*stride)= v;
nengel@2 76 }else if(w==16){
nengel@2 77 const uint64_t v= val*0x0100000001ULL;
nengel@2 78 *(uint64_t*)(p + 0+0*stride)= v;
nengel@2 79 *(uint64_t*)(p + 8+0*stride)= v;
nengel@2 80 *(uint64_t*)(p + 0+1*stride)= v;
nengel@2 81 *(uint64_t*)(p + 8+1*stride)= v;
nengel@2 82 if(h==2) return;
nengel@2 83 *(uint64_t*)(p + 0+2*stride)= v;
nengel@2 84 *(uint64_t*)(p + 8+2*stride)= v;
nengel@2 85 *(uint64_t*)(p + 0+3*stride)= v;
nengel@2 86 *(uint64_t*)(p + 8+3*stride)= v;
nengel@2 87 }else
nengel@2 88 assert(0);
nengel@2 89 assert(h==4);
nengel@2 90 }
nengel@2 91
nengel@2 92 #endif /* AVCODEC_RECTANGLE_H */