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📄 dsputil_mmx_rnd.h

📁 这是著名的TCPMP播放器在WINDWOWS,和WINCE下编译通过的源程序.笔者对其中的LIBMAD库做了针对ARM MPU的优化. 并增加了词幕功能.
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// avg_pixels
static void attribute_unused DEF(avg, pixels4)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	     "movd  %0, %%mm0		\n\t"
	     "movd  %1, %%mm1		\n\t"
	     PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	     "movd  %%mm2, %0		\n\t"
	     :"+m"(*block)
	     :"m"(*pixels)
	     :"memory");
	pixels += line_size;
	block += line_size;
    }
    while (--h);
}

// in case more speed is needed - unroling would certainly help
static void DEF(avg, pixels8)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	     "movq  %0, %%mm0		\n\t"
	     "movq  %1, %%mm1		\n\t"
	     PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	     "movq  %%mm2, %0		\n\t"
	     :"+m"(*block)
	     :"m"(*pixels)
	     :"memory");
	pixels += line_size;
	block += line_size;
    }
    while (--h);
}

static void DEF(avg, pixels16)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	     "movq  %0, %%mm0		\n\t"
	     "movq  %1, %%mm1		\n\t"
	     PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	     "movq  %%mm2, %0		\n\t"
	     "movq  8%0, %%mm0		\n\t"
	     "movq  8%1, %%mm1		\n\t"
	     PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	     "movq  %%mm2, 8%0		\n\t"
	     :"+m"(*block)
	     :"m"(*pixels)
	     :"memory");
	pixels += line_size;
	block += line_size;
    }
    while (--h);
}

static void DEF(avg, pixels8_x2)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	    "movq  %1, %%mm0		\n\t"
	    "movq  1%1, %%mm1		\n\t"
	    "movq  %0, %%mm3		\n\t"
	    PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	    PAVGB(%%mm3, %%mm2, %%mm0, %%mm6)
	    "movq  %%mm0, %0		\n\t"
	    :"+m"(*block)
	    :"m"(*pixels)
	    :"memory");
	pixels += line_size;
	block += line_size;
    } while (--h);
}

static __attribute__((unused)) void DEF(avg, pixels8_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	    "movq  %1, %%mm0		\n\t"
	    "movq  %2, %%mm1		\n\t"
	    "movq  %0, %%mm3		\n\t"
	    PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	    PAVGB(%%mm3, %%mm2, %%mm0, %%mm6)
	    "movq  %%mm0, %0		\n\t"
	    :"+m"(*dst)
	    :"m"(*src1), "m"(*src2)
	    :"memory");
	dst += dstStride;
        src1 += src1Stride;
        src2 += 8;
    } while (--h);
}

static void DEF(avg, pixels16_x2)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	    "movq  %1, %%mm0		\n\t"
	    "movq  1%1, %%mm1		\n\t"
	    "movq  %0, %%mm3		\n\t"
	    PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	    PAVGB(%%mm3, %%mm2, %%mm0, %%mm6)
	    "movq  %%mm0, %0		\n\t"
	    "movq  8%1, %%mm0		\n\t"
	    "movq  9%1, %%mm1		\n\t"
	    "movq  8%0, %%mm3		\n\t"
	    PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	    PAVGB(%%mm3, %%mm2, %%mm0, %%mm6)
	    "movq  %%mm0, 8%0		\n\t"
	    :"+m"(*block)
	    :"m"(*pixels)
	    :"memory");
	pixels += line_size;
	block += line_size;
    } while (--h);
}

static __attribute__((unused)) void DEF(avg, pixels16_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h)
{
    MOVQ_BFE(mm6);
    JUMPALIGN();
    do {
	__asm __volatile(
	    "movq  %1, %%mm0		\n\t"
	    "movq  %2, %%mm1		\n\t"
	    "movq  %0, %%mm3		\n\t"
	    PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	    PAVGB(%%mm3, %%mm2, %%mm0, %%mm6)
	    "movq  %%mm0, %0		\n\t"
	    "movq  8%1, %%mm0		\n\t"
	    "movq  8%2, %%mm1		\n\t"
	    "movq  8%0, %%mm3		\n\t"
	    PAVGB(%%mm0, %%mm1, %%mm2, %%mm6)
	    PAVGB(%%mm3, %%mm2, %%mm0, %%mm6)
	    "movq  %%mm0, 8%0		\n\t"
	    :"+m"(*dst)
	    :"m"(*src1), "m"(*src2)
	    :"memory");
	dst += dstStride;
        src1 += src1Stride;
        src2 += 16;
    } while (--h);
}

static void DEF(avg, pixels8_y2)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_BFE(mm6);
    __asm __volatile(
	"lea	(%3, %3), %%"REG_a"	\n\t"
	"movq	(%1), %%mm0		\n\t"
	".balign 8			\n\t"
	"1:				\n\t"
	"movq	(%1, %3), %%mm1		\n\t"
	"movq	(%1, %%"REG_a"), %%mm2	\n\t"
	PAVGBP(%%mm1, %%mm0, %%mm4,   %%mm2, %%mm1, %%mm5)
	"movq	(%2), %%mm3		\n\t"
	PAVGB(%%mm3, %%mm4, %%mm0, %%mm6)
	"movq	(%2, %3), %%mm3		\n\t"
	PAVGB(%%mm3, %%mm5, %%mm1, %%mm6)
	"movq	%%mm0, (%2)		\n\t"
	"movq	%%mm1, (%2, %3)		\n\t"
	"add	%%"REG_a", %1		\n\t"
	"add	%%"REG_a", %2		\n\t"

	"movq	(%1, %3), %%mm1		\n\t"
	"movq	(%1, %%"REG_a"), %%mm0	\n\t"
	PAVGBP(%%mm1, %%mm2, %%mm4,   %%mm0, %%mm1, %%mm5)
	"movq	(%2), %%mm3		\n\t"
	PAVGB(%%mm3, %%mm4, %%mm2, %%mm6)
	"movq	(%2, %3), %%mm3		\n\t"
	PAVGB(%%mm3, %%mm5, %%mm1, %%mm6)
	"movq	%%mm2, (%2)		\n\t"
	"movq	%%mm1, (%2, %3)		\n\t"
	"add	%%"REG_a", %1		\n\t"
	"add	%%"REG_a", %2		\n\t"

	"subl	$4, %0			\n\t"
	"jnz	1b			\n\t"
	:"+g"(h), "+S"(pixels), "+D"(block)
	:"r"((long)line_size)
	:REG_a, "memory");
}

// this routine is 'slightly' suboptimal but mostly unused
static void DEF(avg, pixels8_xy2)(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
    MOVQ_ZERO(mm7);
    SET_RND(mm6); // =2 for rnd  and  =1 for no_rnd version
    __asm __volatile(
	"movq	(%1), %%mm0		\n\t"
	"movq	1(%1), %%mm4		\n\t"
	"movq	%%mm0, %%mm1		\n\t"
	"movq	%%mm4, %%mm5		\n\t"
	"punpcklbw %%mm7, %%mm0		\n\t"
	"punpcklbw %%mm7, %%mm4		\n\t"
	"punpckhbw %%mm7, %%mm1		\n\t"
	"punpckhbw %%mm7, %%mm5		\n\t"
	"paddusw %%mm0, %%mm4		\n\t"
	"paddusw %%mm1, %%mm5		\n\t"
	"xor	%%"REG_a", %%"REG_a"	\n\t"
	"add	%3, %1			\n\t"
	".balign 8			\n\t"
	"1:				\n\t"
	"movq	(%1, %%"REG_a"), %%mm0	\n\t"
	"movq	1(%1, %%"REG_a"), %%mm2	\n\t"
	"movq	%%mm0, %%mm1		\n\t"
	"movq	%%mm2, %%mm3		\n\t"
	"punpcklbw %%mm7, %%mm0		\n\t"
	"punpcklbw %%mm7, %%mm2		\n\t"
	"punpckhbw %%mm7, %%mm1		\n\t"
	"punpckhbw %%mm7, %%mm3		\n\t"
	"paddusw %%mm2, %%mm0	 	\n\t"
	"paddusw %%mm3, %%mm1		\n\t"
	"paddusw %%mm6, %%mm4		\n\t"
	"paddusw %%mm6, %%mm5		\n\t"
	"paddusw %%mm0, %%mm4		\n\t"
	"paddusw %%mm1, %%mm5		\n\t"
	"psrlw	$2, %%mm4		\n\t"
	"psrlw	$2, %%mm5		\n\t"
		"movq	(%2, %%"REG_a"), %%mm3	\n\t"
	"packuswb  %%mm5, %%mm4		\n\t"
		"pcmpeqd %%mm2, %%mm2	\n\t"
		"paddb %%mm2, %%mm2	\n\t"
		PAVGB(%%mm3, %%mm4, %%mm5, %%mm2)
		"movq	%%mm5, (%2, %%"REG_a")	\n\t"
	"add	%3, %%"REG_a"		\n\t"

	"movq	(%1, %%"REG_a"), %%mm2	\n\t" // 0 <-> 2   1 <-> 3
	"movq	1(%1, %%"REG_a"), %%mm4	\n\t"
	"movq	%%mm2, %%mm3		\n\t"
	"movq	%%mm4, %%mm5		\n\t"
	"punpcklbw %%mm7, %%mm2		\n\t"
	"punpcklbw %%mm7, %%mm4		\n\t"
	"punpckhbw %%mm7, %%mm3		\n\t"
	"punpckhbw %%mm7, %%mm5		\n\t"
	"paddusw %%mm2, %%mm4	 	\n\t"
	"paddusw %%mm3, %%mm5		\n\t"
	"paddusw %%mm6, %%mm0		\n\t"
	"paddusw %%mm6, %%mm1		\n\t"
	"paddusw %%mm4, %%mm0		\n\t"
	"paddusw %%mm5, %%mm1		\n\t"
	"psrlw	$2, %%mm0		\n\t"
	"psrlw	$2, %%mm1		\n\t"
		"movq	(%2, %%"REG_a"), %%mm3	\n\t"
	"packuswb  %%mm1, %%mm0		\n\t"
		"pcmpeqd %%mm2, %%mm2	\n\t"
		"paddb %%mm2, %%mm2	\n\t"
		PAVGB(%%mm3, %%mm0, %%mm1, %%mm2)
		"movq	%%mm1, (%2, %%"REG_a")	\n\t"
	"add	%3, %%"REG_a"		\n\t"

	"subl	$2, %0			\n\t"
	"jnz	1b			\n\t"
	:"+g"(h), "+S"(pixels)
	:"D"(block), "r"((long)line_size)
	:REG_a, "memory");
}

//FIXME optimize
static void DEF(put, pixels16_y2)(uint8_t *block, const uint8_t *pixels, int line_size, int h){
    DEF(put, pixels8_y2)(block  , pixels  , line_size, h);
    DEF(put, pixels8_y2)(block+8, pixels+8, line_size, h);
}

static void DEF(put, pixels16_xy2)(uint8_t *block, const uint8_t *pixels, int line_size, int h){
    DEF(put, pixels8_xy2)(block  , pixels  , line_size, h);
    DEF(put, pixels8_xy2)(block+8, pixels+8, line_size, h);
}

static void DEF(avg, pixels16_y2)(uint8_t *block, const uint8_t *pixels, int line_size, int h){
    DEF(avg, pixels8_y2)(block  , pixels  , line_size, h);
    DEF(avg, pixels8_y2)(block+8, pixels+8, line_size, h);
}

static void DEF(avg, pixels16_xy2)(uint8_t *block, const uint8_t *pixels, int line_size, int h){
    DEF(avg, pixels8_xy2)(block  , pixels  , line_size, h);
    DEF(avg, pixels8_xy2)(block+8, pixels+8, line_size, h);
}
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