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23 lines
625 B
23 lines
625 B
/************************************************************************/
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/* 定义 dsp 优化限幅运算使用的查找表，实现其初始化函数 */
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/************************************************************************/
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#include "avcodec.h"
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#include "dsputil.h"
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uint8_t cropTbl[256+2 * MAX_NEG_CROP] = {0, };
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/* dsp的静态初始化 ，实际作用是设置cropTbl数组的值 */
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void dsputil_static_init(void)
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{
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int i;
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for (i = 0; i < 256; i++)
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cropTbl[i + MAX_NEG_CROP] = i;
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for (i = 0; i < MAX_NEG_CROP; i++)
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{
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cropTbl[i] = 0;
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cropTbl[i + MAX_NEG_CROP + 256] = 255;
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}
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}
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