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new versions; put_pix's about 20% faster, get_pix 3.5x faster. patch by (Leon van Stuivenberg <leonvs at iae dot nl>)

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Originally committed as revision 1697 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Leon van Stuivenberg 22 years ago committed by Michael Niedermayer
parent 558eae031e
commit 5e0daa0ac5
1 changed files with 59 additions and 31 deletions
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  1. 90
      libavcodec/ps2/dsputil_mmi.c

90
libavcodec/ps2/dsputil_mmi.c
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@ -49,63 +49,91 @@ static void clear_blocks_mmi(DCTELEM * blocks)
static void get_pixels_mmi(DCTELEM *block, const uint8_t *pixels, int line_size)
{
int i;
for(i=0;i<8;i++) {
asm volatile(
".set push \n\t"
".set mips3 \n\t"
"ld $8, 0(%1) \n\t"
"add %1, %1, %2 \n\t"
"ld $8, 0(%0) \n\t"
"add %0, %0, %2 \n\t"
"ld $9, 0(%0) \n\t"
"add %0, %0, %2 \n\t"
"ld $10, 0(%0) \n\t"
"pextlb $8, $0, $8 \n\t"
"sq $8, 0(%0) \n\t"
"sq $8, 0(%1) \n\t"
"add %0, %0, %2 \n\t"
"ld $8, 0(%0) \n\t"
"pextlb $9, $0, $9 \n\t"
"sq $9, 16(%1) \n\t"
"add %0, %0, %2 \n\t"
"ld $9, 0(%0) \n\t"
"pextlb $10, $0, $10 \n\t"
"sq $10, 32(%1) \n\t"
"add %0, %0, %2 \n\t"
"ld $10, 0(%0) \n\t"
"pextlb $8, $0, $8 \n\t"
"sq $8, 48(%1) \n\t"
"add %0, %0, %2 \n\t"
"ld $8, 0(%0) \n\t"
"pextlb $9, $0, $9 \n\t"
"sq $9, 64(%1) \n\t"
"add %0, %0, %2 \n\t"
"ld $9, 0(%0) \n\t"
"pextlb $10, $0, $10 \n\t"
"sq $10, 80(%1) \n\t"
"pextlb $8, $0, $8 \n\t"
"sq $8, 96(%1) \n\t"
"pextlb $9, $0, $9 \n\t"
"sq $9, 112(%1) \n\t"
".set pop \n\t"
:: "r" (block), "r" (pixels), "r" (line_size) : "$8", "memory" );
block += 8;
}
: "+r" (pixels) : "r" (block), "r" (line_size) : "$8", "$9", "$10", "memory" );
}
static void put_pixels8_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
int i;
for(i=0; i<h; i++) {
asm volatile(
".set push \n\t"
".set mips3 \n\t"
"1: \n\t"
"ldr $8, 0(%1) \n\t"
"addiu %2, %2, -1 \n\t"
"ldl $8, 7(%1) \n\t"
"add %1, %1, %2 \n\t"
"add %1, %1, %3 \n\t"
"sd $8, 0(%0) \n\t"
"add %0, %0, %2 \n\t"
"add %0, %0, %3 \n\t"
"bgtz %2, 1b \n\t"
".set pop \n\t"
:: "r" (block), "r" (pixels), "r" (line_size) : "$8", "memory" );
}
: "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
: "$8", "memory" );
}
static void put_pixels16_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
int i;
for(i=0; i<(h>>2); i++) {
asm volatile (
".set push \n\t"
".set mips3 \n\t"
#define PUTPIX16 \
"ldr $8, 0(%1) \n\t" \
"ldl $8, 7(%1) \n\t" \
"ldr $9, 8(%1) \n\t" \
"ldl $9, 15(%1) \n\t" \
"add %1, %1, %2 \n\t" \
"pcpyld $8, $9, $8 \n\t" \
"sq $8, 0(%0) \n\t" \
"add %0, %0, %2 \n\t"
PUTPIX16
PUTPIX16
PUTPIX16
PUTPIX16
"1: \n\t"
"ldr $8, 0(%1) \n\t"
"add $11, %1, %3 \n\t"
"ldl $8, 7(%1) \n\t"
"add $10, %0, %3 \n\t"
"ldr $9, 8(%1) \n\t"
"ldl $9, 15(%1) \n\t"
"ldr $12, 0($11) \n\t"
"add %1, $11, %3 \n\t"
"ldl $12, 7($11) \n\t"
"pcpyld $8, $9, $8 \n\t"
"sq $8, 0(%0) \n\t"
"ldr $13, 8($11) \n\t"
"addiu %2, %2, -2 \n\t"
"ldl $13, 15($11) \n\t"
"add %0, $10, %3 \n\t"
"pcpyld $12, $13, $12 \n\t"
"sq $12, 0($10) \n\t"
"bgtz %2, 1b \n\t"
".set pop \n\t"
:: "r" (block), "r" (pixels), "r" (line_size) : "$8", "$9", "memory" );
}
: "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
: "$8", "$9", "$10", "$11", "$12", "$13", "memory" );
}

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