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ffmpeg / libavfilter / libmpcodecs / libvo / fastmemcpy.h @ e4852fb3

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/*
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 * This file is part of MPlayer.
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 *
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 * MPlayer 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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 * MPlayer 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 MPlayer; 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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#ifndef MPLAYER_FASTMEMCPY_H
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#define MPLAYER_FASTMEMCPY_H
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#include <inttypes.h>
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#include <string.h>
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#include <stddef.h>
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void * fast_memcpy(void * to, const void * from, size_t len);
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void * mem2agpcpy(void * to, const void * from, size_t len);
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#if ! defined(CONFIG_FASTMEMCPY) || ! (HAVE_MMX || HAVE_MMX2 || HAVE_AMD3DNOW /* || HAVE_SSE || HAVE_SSE2 */)
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#define mem2agpcpy(a,b,c) memcpy(a,b,c)
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#define fast_memcpy(a,b,c) memcpy(a,b,c)
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#endif
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static inline void * mem2agpcpy_pic(void * dst, const void * src, int bytesPerLine, int height, int dstStride, int srcStride)
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{
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    int i;
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    void *retval=dst;
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    if(dstStride == srcStride)
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    {
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        if (srcStride < 0) {
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                src = (uint8_t*)src + (height-1)*srcStride;
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                dst = (uint8_t*)dst + (height-1)*dstStride;
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                srcStride = -srcStride;
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        }
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        mem2agpcpy(dst, src, srcStride*height);
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    }
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    else
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    {
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        for(i=0; i<height; i++)
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        {
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            mem2agpcpy(dst, src, bytesPerLine);
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            src = (uint8_t*)src + srcStride;
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            dst = (uint8_t*)dst + dstStride;
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        }
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    }
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    return retval;
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}
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#define memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 0)
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#define my_memcpy_pic(d, s, b, h, ds, ss) memcpy_pic2(d, s, b, h, ds, ss, 1)
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/**
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 * \param limit2width always skip data between end of line and start of next
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 *                    instead of copying the full block when strides are the same
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 */
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static inline void * memcpy_pic2(void * dst, const void * src,
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                                 int bytesPerLine, int height,
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                                 int dstStride, int srcStride, int limit2width)
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{
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    int i;
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    void *retval=dst;
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    if(!limit2width && dstStride == srcStride)
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    {
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        if (srcStride < 0) {
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                src = (uint8_t*)src + (height-1)*srcStride;
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                dst = (uint8_t*)dst + (height-1)*dstStride;
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                srcStride = -srcStride;
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        }
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        fast_memcpy(dst, src, srcStride*height);
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    }
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    else
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    {
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        for(i=0; i<height; i++)
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        {
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            fast_memcpy(dst, src, bytesPerLine);
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            src = (uint8_t*)src + srcStride;
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            dst = (uint8_t*)dst + dstStride;
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        }
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    }
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    return retval;
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}
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#endif /* MPLAYER_FASTMEMCPY_H */