video_writer::copy_image::copy_image(uint32_t width, uint32_t height, uint32_t pitch)
{
uint32_t w_byte = width * 4 / 16;
uint32_t index = 0;
std::function<void()> funcs[3] =
{
[this] { mov16(); },
[this] { mov32(); },
[this] { mov64(); }
};
for (; index < 2; ++index){
if ((w_byte & 1) == 1)
{
break;
}
else {
w_byte = w_byte / 2;
}
}
mov(r8, w_byte);
mov(r9, height);
mov(r10, pitch * 2);
L("L2");
mov(rax, r8);
L("L1");
funcs[index]();
sub(rax, 1);
jnz("L1");
sub(rcx, r10);
sub(r9, 1);
jnz("L2");
vzeroupper();
ret();
}
void MacroAssembler::fast_log(XMMRegister xmm0, XMMRegister xmm1, XMMRegister xmm2, XMMRegister xmm3, XMMRegister xmm4, XMMRegister xmm5, XMMRegister xmm6, XMMRegister xmm7, Register eax, Register ecx, Register edx, Register tmp1, Register tmp2) {
Label L_2TAG_PACKET_0_0_2, L_2TAG_PACKET_1_0_2, L_2TAG_PACKET_2_0_2, L_2TAG_PACKET_3_0_2;
Label L_2TAG_PACKET_4_0_2, L_2TAG_PACKET_5_0_2, L_2TAG_PACKET_6_0_2, L_2TAG_PACKET_7_0_2;
Label L_2TAG_PACKET_8_0_2;
Label L_2TAG_PACKET_12_0_2, L_2TAG_PACKET_13_0_2, B1_3, B1_5, start;
assert_different_registers(tmp1, tmp2, eax, ecx, edx);
jmp(start);
address L_tbl = (address)_L_tbl;
address log2 = (address)_log2;
address coeff = (address)_coeff;
bind(start);
subq(rsp, 24);
movsd(Address(rsp, 0), xmm0);
mov64(rax, 0x3ff0000000000000);
movdq(xmm2, rax);
mov64(rdx, 0x77f0000000000000);
movdq(xmm3, rdx);
movl(ecx, 32768);
movdl(xmm4, rcx);
mov64(tmp1, 0xffffe00000000000);
movdq(xmm5, tmp1);
movdqu(xmm1, xmm0);
pextrw(eax, xmm0, 3);
por(xmm0, xmm2);
movl(ecx, 16352);
psrlq(xmm0, 27);
lea(tmp2, ExternalAddress(L_tbl));
psrld(xmm0, 2);
rcpps(xmm0, xmm0);
psllq(xmm1, 12);
pshufd(xmm6, xmm5, 228);
psrlq(xmm1, 12);
subl(eax, 16);
cmpl(eax, 32736);
jcc(Assembler::aboveEqual, L_2TAG_PACKET_0_0_2);
bind(L_2TAG_PACKET_1_0_2);
paddd(xmm0, xmm4);
por(xmm1, xmm3);
movdl(edx, xmm0);
psllq(xmm0, 29);
pand(xmm5, xmm1);
pand(xmm0, xmm6);
subsd(xmm1, xmm5);
mulpd(xmm5, xmm0);
andl(eax, 32752);
subl(eax, ecx);
cvtsi2sdl(xmm7, eax);
mulsd(xmm1, xmm0);
movq(xmm6, ExternalAddress(log2)); // 0xfefa3800UL, 0x3fa62e42UL
movdqu(xmm3, ExternalAddress(coeff)); // 0x92492492UL, 0x3fc24924UL, 0x00000000UL, 0xbfd00000UL
subsd(xmm5, xmm2);
andl(edx, 16711680);
shrl(edx, 12);
movdqu(xmm0, Address(tmp2, edx));
movdqu(xmm4, ExternalAddress(16 + coeff)); // 0x3d6fb175UL, 0xbfc5555eUL, 0x55555555UL, 0x3fd55555UL
addsd(xmm1, xmm5);
movdqu(xmm2, ExternalAddress(32 + coeff)); // 0x9999999aUL, 0x3fc99999UL, 0x00000000UL, 0xbfe00000UL
mulsd(xmm6, xmm7);
movddup(xmm5, xmm1);
mulsd(xmm7, ExternalAddress(8 + log2)); // 0x93c76730UL, 0x3ceef357UL
mulsd(xmm3, xmm1);
addsd(xmm0, xmm6);
mulpd(xmm4, xmm5);
mulpd(xmm5, xmm5);
movddup(xmm6, xmm0);
addsd(xmm0, xmm1);
addpd(xmm4, xmm2);
mulpd(xmm3, xmm5);
subsd(xmm6, xmm0);
mulsd(xmm4, xmm1);
pshufd(xmm2, xmm0, 238);
addsd(xmm1, xmm6);
mulsd(xmm5, xmm5);
addsd(xmm7, xmm2);
addpd(xmm4, xmm3);
addsd(xmm1, xmm7);
mulpd(xmm4, xmm5);
addsd(xmm1, xmm4);
pshufd(xmm5, xmm4, 238);
addsd(xmm1, xmm5);
addsd(xmm0, xmm1);
jmp(B1_5);
bind(L_2TAG_PACKET_0_0_2);
movq(xmm0, Address(rsp, 0));
movq(xmm1, Address(rsp, 0));
addl(eax, 16);
cmpl(eax, 32768);
jcc(Assembler::aboveEqual, L_2TAG_PACKET_2_0_2);
cmpl(eax, 16);
jcc(Assembler::below, L_2TAG_PACKET_3_0_2);
bind(L_2TAG_PACKET_4_0_2);
addsd(xmm0, xmm0);
jmp(B1_5);
bind(L_2TAG_PACKET_5_0_2);
jcc(Assembler::above, L_2TAG_PACKET_4_0_2);
cmpl(edx, 0);
jcc(Assembler::above, L_2TAG_PACKET_4_0_2);
jmp(L_2TAG_PACKET_6_0_2);
bind(L_2TAG_PACKET_3_0_2);
xorpd(xmm1, xmm1);
addsd(xmm1, xmm0);
movdl(edx, xmm1);
psrlq(xmm1, 32);
movdl(ecx, xmm1);
orl(edx, ecx);
cmpl(edx, 0);
jcc(Assembler::equal, L_2TAG_PACKET_7_0_2);
xorpd(xmm1, xmm1);
movl(eax, 18416);
pinsrw(xmm1, eax, 3);
mulsd(xmm0, xmm1);
movdqu(xmm1, xmm0);
pextrw(eax, xmm0, 3);
por(xmm0, xmm2);
psrlq(xmm0, 27);
movl(ecx, 18416);
psrld(xmm0, 2);
rcpps(xmm0, xmm0);
psllq(xmm1, 12);
pshufd(xmm6, xmm5, 228);
psrlq(xmm1, 12);
jmp(L_2TAG_PACKET_1_0_2);
bind(L_2TAG_PACKET_2_0_2);
movdl(edx, xmm1);
psrlq(xmm1, 32);
movdl(ecx, xmm1);
addl(ecx, ecx);
cmpl(ecx, -2097152);
jcc(Assembler::aboveEqual, L_2TAG_PACKET_5_0_2);
orl(edx, ecx);
cmpl(edx, 0);
jcc(Assembler::equal, L_2TAG_PACKET_7_0_2);
bind(L_2TAG_PACKET_6_0_2);
xorpd(xmm1, xmm1);
xorpd(xmm0, xmm0);
movl(eax, 32752);
pinsrw(xmm1, eax, 3);
mulsd(xmm0, xmm1);
movl(Address(rsp, 16), 3);
jmp(L_2TAG_PACKET_8_0_2);
bind(L_2TAG_PACKET_7_0_2);
xorpd(xmm1, xmm1);
xorpd(xmm0, xmm0);
movl(eax, 49136);
pinsrw(xmm0, eax, 3);
divsd(xmm0, xmm1);
movl(Address(rsp, 16), 2);
bind(L_2TAG_PACKET_8_0_2);
movq(Address(rsp, 8), xmm0);
bind(B1_3);
movq(xmm0, Address(rsp, 8));
bind(B1_5);
addq(rsp, 24);
}
