mmxcpuid.h

来自「symbian 下的helix player源代码」· C头文件 代码 · 共 79 行

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: mmxcpuid.h,v 1.1.1.1.42.1 2004/07/09 01:56:17 hubbe Exp $
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/* init function which detects presence or absence of MMX was called */
#define CPUID_NOTINIT	0
#define CPUID_VALID		1

/* init function detected mmx support if !=0 */
#define CPUID_MMX_OFF					0x00000000
//turn everything on with this bit
#define CPUID_MMX_ON						0x00000001
//if bit 0 = 1 is not set, turn on selectively
#define CPUID_MMXDEBLO_ON				0x00000002
#define CPUID_MMXYUV2RGB_ON			0x00000004
#define CPUID_MMXRGB2YUV_ON			0x00000008
#define CPUID_MMXMOTION_ON				0x00000010
#define CPUID_MMXIDCT_ON					0x00000020


/*----------------------------------------------------------------------------*/ 
extern long g_mmx_checked;
extern long g_mmx_detected;

/*----------------------------------------------------------------------------*/ 
void cpuid_init(); 
#define cpuid_is_init() (g_mmx_checked==CPUID_VALID)
#define cpuid_is_mmx_on() ((g_mmx_detected & CPUID_MMX_ON) !=0)
#define cpuid_is_mmx_deblo_on() ((g_mmx_detected & (CPUID_MMX_ON | CPUID_MMXDEBLO_ON)) !=0)
#define cpuid_is_mmx_yuv2rgb_on() ((g_mmx_detected & (CPUID_MMX_ON | CPUID_MMXYUV2RGB_ON)) !=0)
#define cpuid_is_mmx_rgb2yuv_on() ((g_mmx_detected & (CPUID_MMX_ON | CPUID_MMXRGB2YUV_ON)) !=0)
#define cpuid_is_mmx_motion_on() ((g_mmx_detected & (CPUID_MMX_ON | CPUID_MMXMOTION_ON)) !=0)
#define cpuid_is_mmx_idct_on() ((g_mmx_detected & (CPUID_MMX_ON | CPUID_MMXIDCT_ON)) !=0)