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gstreamer/gst/videomixer/blend_mmx.h
Sebastian Dröge 41b17ec2a7 videomixer: Fix assembly register constraints 
Fixes bug #608209.
2010-01-27 16:35:10 +01:00

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#ifdef A32
static inline void
NAME_BLEND (guint8 * dest, const guint8 * src, gint src_height, gint src_width,
gint src_stride, gint dest_stride, guint s_alpha)
{
gint i;
gint src_add = src_stride - (4 * src_width);
gint dest_add = dest_stride - (4 * src_width);
for (i = 0; i < src_height; i++) {
/* (P1 * (256 - A) + (P2 * A)) / 256
* => (P1 * 256 - P1 * A + P2 * A) / 256
* => (P1 * 256 + A * (P2 - P1) / 256
* => P1 + (A * (P2 - P1)) / 256
*/
/* *INDENT-OFF* */
__asm__ __volatile__ (
" pcmpeqd %%mm5 , %%mm5 \n\t" /* mm5 = 0xffff... */
#if A_OFF == 0
" psrld $24 , %%mm5 \n\t" /* mm5 = 00 00 00 ff 00 00 00 ff, selector for alpha */
#else
" pslld $24 , %%mm5 \n\t" /* mm5 = ff 00 00 00 ff 00 00 00, selector for alpha */
#endif
" mov %4 , %%eax \n\t" /* eax = s_alpha */
" movd %%eax , %%mm6 \n\t" /* mm6 = s_alpha */
" punpckldq %%mm6 , %%mm6 \n\t" /* mm6 = 00 00 00 aa 00 00 00 aa, alpha scale factor */
" movl %5 , %%ecx \n\t" /* ecx = src_width */
" test $1 , %%ecx \n\t" /* check odd pixel */
" je 1f \n\t"
/* do odd pixel */
" movd (%2) , %%mm2 \n\t" /* mm2 = src, 00 00 00 00 sv su sy sa */
" movd (%3) , %%mm1 \n\t" /* mm1 = dest, 00 00 00 00 dv du dy da */
" movq %%mm2 , %%mm0 \n\t"
" punpcklbw %%mm7 , %%mm2 \n\t" /* mm2 = 00 sv 00 su 00 sy 00 sa */
" pand %%mm5 , %%mm0 \n\t" /* mm0 = 00 00 00 00 00 00 00 sa, get alpha component */
#if A_OFF != 0
" psrld $24 , %%mm0 \n\t"
#endif
" punpcklbw %%mm7 , %%mm1 \n\t" /* mm1 = 00 dv 00 du 00 dy 00 da */
" pmullw %%mm6 , %%mm0 \n\t" /* mult with scale */
" psubw %%mm1 , %%mm2 \n\t" /* mm2 = mm2 - mm1 */
" punpcklwd %%mm0 , %%mm0 \n\t"
" punpckldq %%mm0 , %%mm0 \n\t" /* mm0 == 00 aa 00 aa 00 aa 00 aa */
" psrlw $8 , %%mm0 \n\t"
" pmullw %%mm0 , %%mm2 \n\t" /* mm2 == a * mm2 */
" psllw $8 , %%mm1 \n\t" /* scale up */
" paddw %%mm1 , %%mm2 \n\t" /* mm2 == mm2 + mm1 */
" psrlw $8 , %%mm2 \n\t" /* scale down */
" por %%mm5 , %%mm2 \n\t" /* set alpha to ff */
" packuswb %%mm2 , %%mm2 \n\t"
" movd %%mm2 , (%3) \n\t" /* dest = mm1 */
" add $4 , %1 \n\t"
" add $4 , %0 \n\t"
"1: \n\t"
" sar $1 , %%ecx \n\t" /* prepare for 2 pixel per loop */
" cmp $0 , %%ecx \n\t"
" je 3f \n\t"
"2: \n\t"
/* do even pixels */
" movq (%2) , %%mm2 \n\t" /* mm2 = src, sv1 su1 sy1 sa1 sv0 su0 sy0 sa0 */
" movq (%3) , %%mm1 \n\t" /* mm1 = dest, dv1 du1 dy1 da1 dv0 du0 dy0 da0 */
" movq %%mm2 , %%mm4 \n\t"
" movq %%mm1 , %%mm3 \n\t"
" movq %%mm2 , %%mm0 \n\t" /* copy for doing the alpha */
" pxor %%mm7 , %%mm7 \n\t"
" punpcklbw %%mm7 , %%mm2 \n\t" /* mm2 = 00 sv0 00 su0 00 sy0 00 sa0 */
" punpckhbw %%mm7 , %%mm4 \n\t" /* mm4 = 00 sv1 00 su1 00 sy1 00 sa1 */
" punpcklbw %%mm7 , %%mm1 \n\t" /* mm1 = 00 dv0 00 du0 00 dy0 00 da0 */
" punpckhbw %%mm7 , %%mm3 \n\t" /* mm2 = 00 dv1 00 du1 00 dy1 00 da1 */
" pand %%mm5 , %%mm0 \n\t" /* mm0 = 00 00 00 sa1 00 00 00 sa0 */
#if A_OFF != 0
" psrld $24 , %%mm0 \n\t"
#endif
" psubw %%mm1 , %%mm2 \n\t" /* mm2 = mm2 - mm1 */
" pmullw %%mm6 , %%mm0 \n\t" /* mult with scale */
" psubw %%mm3 , %%mm4 \n\t" /* mm4 = mm4 - mm3 */
" psrlw $8 , %%mm0 \n\t" /* scale back */
" movq %%mm0 , %%mm7 \n\t" /* save copy */
" punpcklwd %%mm0 , %%mm0 \n\t" /* mm0 = 00 00 00 00 00 aa0 00 aa0 */
" punpckhwd %%mm7 , %%mm7 \n\t" /* mm7 = 00 00 00 00 00 aa1 00 aa1 */
" punpckldq %%mm0 , %%mm0 \n\t" /* mm0 = 00 aa0 00 aa0 00 aa0 00 aa0 */
" punpckldq %%mm7 , %%mm7 \n\t" /* mm7 = 00 aa1 00 aa1 00 aa1 00 aa1 */
" pmullw %%mm0 , %%mm2 \n\t" /* mm2 == aa * mm2 */
" pmullw %%mm7 , %%mm4 \n\t" /* mm2 == aa * mm2 */
" psllw $8 , %%mm1 \n\t"
" psllw $8 , %%mm3 \n\t"
" paddw %%mm1 , %%mm2 \n\t" /* mm2 == mm2 + mm1 */
" paddw %%mm3 , %%mm4 \n\t" /* mm2 == mm2 + mm1 */
" psrlw $8 , %%mm2 \n\t"
" psrlw $8 , %%mm4 \n\t"
" packuswb %%mm4 , %%mm2 \n\t"
" por %%mm5 , %%mm2 \n\t" /* set alpha to ff */
" movq %%mm2 , (%3) \n\t"
" add $8 , %1 \n\t"
" add $8 , %0 \n\t"
" dec %%ecx \n\t"
" jne 2b \n\t"
"3: \n\t"
:"=r" (src), "=r" (dest)
:"0" (src), "1" (dest), "m" (s_alpha), "m" (src_width)
:"%eax", "%ecx", "memory"
#ifdef __MMX__
, "mm0", "mm1", "mm2", "mm4", "mm3", "mm5", "mm6", "mm7"
#endif
);
/* *INDENT-ON* */
src += src_add;
dest += dest_add;
}
__asm__ __volatile__ ("emms");
}
static inline void
NAME_FILL_COLOR (guint8 * dest, gint height, gint width, gint c1, gint c2,
gint c3)
{
guint64 val;
guint nvals = width * height;
val = (((guint64) 0xff << A_OFF)) | (((guint64) c1) << C1_OFF) |
(((guint64) c2) << C2_OFF) | (((guint64) c3) << C3_OFF);
val = (val << 32) | val;
/* *INDENT-OFF* */
__asm__ __volatile__ (
"movq %4 , %%mm0 \n\t"
"test $1 , %0 \n\t"
"je 1f \n\t"
"movd %%mm0 , (%1) \n\t"
"add $4 , %1 \n\t"
"dec %0 \n\t"
"1: \n\t"
"sar $1 , %0 \n\t"
"cmp $0 , %0 \n\t"
"je 3f \n\t"
"2: \n\t"
"movq %%mm0 , (%1) \n\t"
"add $8 , %1 \n\t"
"dec %0 \n\t"
"jne 2b \n\t"
"3: \n\t"
"emms \n\t"
: "=r" (nvals), "=r" (dest)
: "0" (nvals), "1" (dest), "m" (val)
: "memory"
#ifdef __MMX__
, "mm0"
#endif
);
/* *INDENT-ON* */
}
#endif
#ifdef GENERIC
static inline void
_memcpy_u8_mmx (guint8 * dest, const guint8 * src, guint count)
{
/* *INDENT-OFF* */
__asm__ __volatile__ (
"1: \n\t"
"test $7, %0 \n\t"
"je 3f \n\t"
"2: \n\t"
"movb (%2), %%ah \n\t"
"movb %%ah, (%1) \n\t"
"inc %2 \n\t"
"inc %1 \n\t"
"dec %0 \n\t"
"test $7, %0 \n\t"
"jne 2b \n\t"
"3: \n\t"
"sar $3, %0 \n\t"
"cmp $0, %0 \n\t"
"je 5f \n\t"
"4: \n\t"
"movq (%2), %%mm0 \n\t"
"movq %%mm0, (%1) \n\t"
"add $8, %2 \n\t"
"add $8, %1 \n\t"
"dec %0 \n\t"
"jne 4b \n\t"
"5: \n\t"
"emms \n\t"
: "=r" (count), "=R" (dest), "=R" (src)
: "0" (count), "1" (dest), "2" (src)
: "memory", "ah"
#ifdef __MMX__
, "mm0"
#endif
);
/* *INDENT-ON* */
}
static inline void
_memset_u8_mmx (guint8 * dest, guint val, guint count)
{
guint8 val8 = val;
guint64 val64;
val64 = (val << 24) | (val << 16) | (val << 8) | (val);
val64 = (val64 << 32) | val64;
/* *INDENT-OFF* */
__asm__ __volatile__ (
"1: \n\t"
"test $7, %0 \n\t"
"je 3f \n\t"
"2: \n\t"
"movb %4, (%1) \n\t"
"inc %1 \n\t"
"dec %0 \n\t"
"test $7, %0 \n\t"
"jne 2b \n\t"
"3: \n\t"
"sar $3, %0 \n\t"
"cmp $0, %0 \n\t"
"je 5f \n\t"
"movq %5, %%mm0 \n\t"
"4: \n\t"
"movq %%mm0, (%1) \n\t"
"add $8, %1 \n\t"
"dec %0 \n\t"
"jne 4b \n\t"
"5: \n\t"
"emms \n\t"
: "=r" (count), "=q" (dest)
: "0" (count), "1" (dest), "q" (val8), "m" (val64)
: "memory"
#ifdef __MMX__
, "mm0"
#endif
);
/* *INDENT-ON* */
}
static inline void
_memset_u32_mmx (guint32 * dest, guint32 val, guint count)
{
guint64 val64 = val;
val64 |= (val64 << 32);
/* *INDENT-OFF* */
__asm__ __volatile__ (
"1: \n\t"
"test $1, %0 \n\t"
"je 3f \n\t"
"2: \n\t"
"movl %4, (%1) \n\t"
"add $4, %1 \n\t"
"dec %0 \n\t"
"test $1, %0 \n\t"
"jne 2b \n\t"
"3: \n\t"
"sar $1, %0 \n\t"
"cmp $0, %0 \n\t"
"je 5f \n\t"
"movq %5, %%mm0 \n\t"
"4: \n\t"
"movq %%mm0, (%1) \n\t"
"add $8, %1 \n\t"
"dec %0 \n\t"
"jne 4b \n\t"
"5: \n\t"
"emms \n\t"
: "=r" (count), "=r" (dest)
: "0" (count), "1" (dest), "r" (val), "m" (val64)
: "memory"
#ifdef __MMX__
, "mm0"
#endif
);
/* *INDENT-ON* */
}
static inline void
_blend_u8_mmx (guint8 * dest, const guint8 * src,
gint src_stride, gint dest_stride, gint src_width, gint src_height,
gint dest_width, gint s_alpha)
{
gint i;
gint src_add = src_stride - src_width;
gint dest_add = dest_stride - src_width;
for (i = 0; i < src_height; i++) {
/* Do first 3 "odd" pixels */
while ((src_width & 0x03)) {
*dest = BLEND (*dest, *src, s_alpha);
dest++;
src++;
src_width--;
}
/* (P1 * (256 - A) + (P2 * A)) / 256
* => (P1 * 256 - P1 * A + P2 * A) / 256
* => (P1 * 256 + A * (P2 - P1) / 256
* => P1 + (A * (P2 - P1)) / 256
*/
/* *INDENT-OFF* */
__asm__ __volatile__ (
" mov %4 , %%eax \n\t" /* eax = s_alpha */
" movd %%eax , %%mm6 \n\t" /* mm6 = s_alpha */
" punpcklwd %%mm6 , %%mm6 \n\t" /* mm6 = 00 00 00 00 00 aa 00 aa, alpha scale factor */
" punpckldq %%mm6 , %%mm6 \n\t" /* mm6 = 00 aa 00 aa 00 aa 00 aa */
" pxor %%mm7 , %%mm7 \n\t" /* mm7 = 00 00 00 00 00 00 00 00 */
" movl %5 , %%ecx \n\t" /* ecx = src_width */
"1: \n\t"
" test $7 , %%ecx \n\t"
" je 2f \n\t"
/* do first 4 "odd" bytes */
" movd (%2) , %%mm2 \n\t" /* mm2 = src, 00 00 00 00 sv su sy sa */
" movd (%3) , %%mm1 \n\t" /* mm1 = dest, 00 00 00 00 dv du dy da */
" punpcklbw %%mm7 , %%mm2 \n\t"
" punpcklbw %%mm7 , %%mm1 \n\t"
" psubw %%mm1 , %%mm2 \n\t" /* mm2 = mm2 - mm1 */
" pmullw %%mm6 , %%mm2 \n\t" /* mm2 = a * mm2 */
" psllw $8 , %%mm1 \n\t" /* scale up */
" paddw %%mm1 , %%mm2 \n\t" /* mm2 = mm2 + mm1 */
" psrlw $8 , %%mm2 \n\t" /* scale down */
" packuswb %%mm2 , %%mm2 \n\t"
" movd %%mm2 , (%3) \n\t" /* dest = mm1 */
" add $4 , %1 \n\t"
" add $4 , %0 \n\t"
"2: \n\t"
" sar $3 , %%ecx \n\t" /* prepare for 8 bytes per loop */
" cmp $0 , %%ecx \n\t"
" je 4f \n\t"
"3: \n\t"
/* do even pixels */
" movq (%2) , %%mm2 \n\t" /* mm2 = src, sv1 su1 sy1 sa1 sv0 su0 sy0 sa0 */
" movq (%3) , %%mm1 \n\t" /* mm1 = dest, dv1 du1 dy1 da1 dv0 du0 dy0 da0 */
" movq %%mm2 , %%mm4 \n\t"
" movq %%mm1 , %%mm3 \n\t"
" punpcklbw %%mm7 , %%mm2 \n\t"
" punpckhbw %%mm7 , %%mm4 \n\t"
" punpcklbw %%mm7 , %%mm1 \n\t"
" punpckhbw %%mm7 , %%mm3 \n\t"
" psubw %%mm1 , %%mm2 \n\t" /* mm2 = mm2 - mm1 */
" psubw %%mm3 , %%mm4 \n\t" /* mm4 = mm4 - mm3 */
" pmullw %%mm6 , %%mm2 \n\t" /* mm2 = a * mm2 */
" pmullw %%mm6 , %%mm4 \n\t" /* mm2 = a * mm2 */
" psllw $8 , %%mm1 \n\t" /* scale up */
" psllw $8 , %%mm3 \n\t" /* scale up */
" paddw %%mm1 , %%mm2 \n\t" /* mm2 = mm2 + mm1 */
" paddw %%mm3 , %%mm4 \n\t" /* mm4 = mm4 + mm3 */
" psrlw $8 , %%mm2 \n\t" /* scale down */
" psrlw $8 , %%mm4 \n\t" /* scale down */
" packuswb %%mm4 , %%mm2 \n\t"
" movq %%mm2 , (%3) \n\t"
" add $8 , %0 \n\t"
" add $8 , %1 \n\t"
" dec %%ecx \n\t"
" jne 3b \n\t"
"4: \n\t"
:"=r" (src), "=r" (dest)
:"0" (src), "1" (dest), "m" (s_alpha), "m" (src_width)
:"%eax", "%ecx", "memory"
#ifdef __MMX__
, "mm1", "mm2", "mm3", "mm4", "mm6", "mm7"
#endif
);
/* *INDENT-ON* */
src += src_add;
dest += dest_add;
}
__asm__ __volatile__ ("emms");
}
#endif
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