unsigned int h_atoh(hfloat* ha, char* buf, int radix)
{
const char ABC[]="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char *pc,c;
bool havepoint=false;
int i;
hfloat r,he,hrad;
h_init(&r);h_init(&he);h_init(&hrad);
h_copy_d(&r, 0.0);
h_copy_d(&he, 1.0);
h_copy_d(&hrad, radix);
pc=buf;
if(*pc=='-') *pc++;
for(;*pc!=0; pc++)
{
if(*pc=='.') { havepoint=true; continue; }
if(havepoint) h_mul(&he, &hrad, &he);
h_mul(&r, &hrad, &r);
c=toupper(*pc);
for(i=0; (ABC[i]!=c) && (ABC[i]!=0); i++);
if(ABC[i]==0) return -1;
h_add_d(&r, (double)i, &r);
}
if(havepoint) h_div(&r, &he, &r);
if(buf[0]=='-') r.s=1;
h_copy(ha, &r);
h_clear(&r); h_clear(&he); h_clear(&hrad);
return 0;
}
int to_444(YUV_frame* in_frame, YUV_frame* out_frame,
void* workSpace)
{
int ssx, ssy;
int w, h;
BYTE* inBuff0;
BYTE* inBuff1;
BYTE* outBuff0;
BYTE* outBuff1;
int j;
// check out_frame is a 4:4:4 format
ssx = out_frame->Y.w / out_frame->U.w;
ssy = out_frame->Y.h / out_frame->U.h;
if ((ssx != 1) || (ssy != 1))
return YUV_Fail;
// check in_frame format
ssx = in_frame->Y.w / in_frame->U.w;
ssy = in_frame->Y.h / in_frame->U.h;
if ((ssx != 2) || (ssy != 1))
return YUV_Fail; // can only convert from 4:2:2 so far
// get dimensions of area to be written
w = min(in_frame->Y.w, out_frame->Y.w);
h = min(in_frame->Y.h, out_frame->Y.h);
// copy Y
inBuff0 = in_frame->Y.buff;
outBuff0 = out_frame->Y.buff;
for (j = h; j != 0; j--)
{
h_copy(inBuff0, outBuff0,
in_frame->Y.pixelStride, out_frame->Y.pixelStride, w);
inBuff0 += in_frame->Y.lineStride;
outBuff0 += out_frame->Y.lineStride;
}
// upsample U & V
inBuff0 = in_frame->U.buff;
inBuff1 = in_frame->V.buff;
outBuff0 = out_frame->U.buff;
outBuff1 = out_frame->V.buff;
for (j = h; j != 0; j--)
{
h_up_2_121(inBuff0, outBuff0,
in_frame->U.pixelStride, out_frame->U.pixelStride, w);
h_up_2_121(inBuff1, outBuff1,
in_frame->V.pixelStride, out_frame->V.pixelStride, w);
inBuff0 += in_frame->U.lineStride;
inBuff1 += in_frame->V.lineStride;
outBuff0 += out_frame->U.lineStride;
outBuff1 += out_frame->V.lineStride;
}
return YUV_OK;
}
void h_htoa(hfloat* ha, char* buf, unsigned int ccmax, int radix)
{
if(h_iszero(ha)) { buf[0]='0'; buf[1]='\0'; return; }
const char abc[]="0123456789ABCDEF";
hfloat t; h_init(&t); h_copy(&t, ha);
int i,j,k;
int exp = 0;
bool negexp=false;
__int8 digit=0;
unsigned __int32 limb;
short digitsize;
char* pc=buf;
memset(buf,0,ccmax);
if(ha->s) { *pc='-'; pc++; }
//if(t<1) { *pc='0'; pc++; }
if(radix==16) digitsize=4;
if(radix==8) digitsize=3;
if(radix==2) digitsize=1;
switch(radix)
{
case 16:
case 8:
case 2:
exp = ha->e;
if(exp<=0)
{
negexp=true;
*pc='0'; pc++; *pc='.'; pc++;
exp=-exp;
if(exp>=digitsize) for(i=0;i<exp;i+=digitsize) {*pc='0'; pc++; }
}
digit=0;
if(negexp) k=exp%digitsize;
else k=digitsize-exp%digitsize;
if(k==digitsize) k=0;
for(i=0;i<MSIZE;i++)
{
limb = ha->m[i];
for(j=0;j<32;j++)
{
if(limb&0x80000000) digit|=1;
k++;
if(k>=digitsize)
{
k=0;
*pc = abc[digit];
*pc++;
digit=0;
}
exp--; if((exp==0) && !negexp) { *pc='.'; pc++; }
digit<<=1;
limb<<=1;
}
}
break;
case 10:
hfloat a,b; h_init(&a); h_init(&b);
h_copy(&t, ha);
if(t.s!=0) t.s=0;
exp = 0;
h_copy_d(&b, 0.1);
if(t.e<=0) {
strcpy(pc,"0."); pc+=2;
while(h_cmp(&t,&b)>0) {
h_mul_d(&t, 10.0, &t);
*pc='0'; pc++;
}
} else { strcpy(pc, "0"); pc++; } // в начале - 0, для округления с переполнением (999.99999)
while(h_cmp_d(&t, 1000000000.0)<=0) { h_div_d(&t, 1000000000.0, &t); exp+=9; }
while(h_cmp_d(&t, 1000000.0)<=0) { h_div_d(&t, 1000000.0, &t); exp+=6; }
while(h_cmp_d(&t, 1000.0)<=0)
{
h_div_d(&t, 1000.0, &t);
exp+=3;
}
while(h_cmp_d(&t, 1.0)<=0) { h_div_d(&t, 10.0, &t); exp++; }
h_clear(&a); h_clear(&b);
unsigned __int8 _e;
for(i=0;i<MSIZE*32/4/5;i++)
{
h_mul_d(&t,100000.0, &t);
if( (exp<=5)&&(exp>=0) ) _e=(unsigned __int8)exp; else _e=0;
exp-=5;
__asm {
mov ebx, t.m
mov eax, [ebx]
mov ecx, 32
sub ecx, t.e
getfrac:
clc
rcr eax, 1
dec cl
jnz getfrac
mov esi, pc
mov ch, _e
or ch, 0x80
call ascii4
add esi, ebx
mov pc, esi
}
h_clrat(&t);
}
// теперь buf содержит наше число в десятичном виде.
// округляем его (23.01299999999 -> 23.013)
pc = buf+strlen(buf)-1;
if(*pc=='9') {
k=1;
do {
if(!isdigit(*pc)) { pc--; continue; }
*pc+=k; if(*pc>'9') { *pc='0'; k=1; } else k=0;
pc--;
} while(k==1);
}
break;
}
pc=buf+strlen(buf)-1;
while( (*pc=='0')&&(pc!=buf) ) { *pc=0; pc--; }
if(*pc=='.') *pc=0;
if( (buf[0]=='0')&&(buf[1]!='.') ) memmove(buf, buf+1, strlen(buf));
if( (buf[0]=='-')&&(buf[1]=='0')&&(buf[2]!='.') ) memmove(buf+1, buf+2, strlen(buf)-1);
h_clear(&t);
}
