mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-11 16:21:26 -05:00
344 lines
9.1 KiB
C++
344 lines
9.1 KiB
C++
|
#include "Decoder.h"
|
||
|
|
|
||
|
|
#define sign(a) ((a) < 0 ? -1 : 1)
|
||
|
|
|
||
|
|
/* private prototypes */
|
||
|
|
static void recon_comp (unsigned char *src, unsigned char *dst,
|
||
|
|
int lx, int lx2, int w, int h, int x, int y, int dx, int dy);
|
||
|
|
|
||
|
|
static void rec(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void recc(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void rech(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void rechc(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void h263_recv(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void recvc(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void rec4(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
static void rec4c(unsigned char *s, unsigned char *d, int lx, int lx2, int h);
|
||
|
|
|
||
|
|
static int roundtab[16]= {0,0,0,1,1,1,1,1,1,1,1,1,1,1,2,2};
|
||
|
|
|
||
|
|
void Decoder::reconstruct(int bx, int by, int mode)
|
||
|
|
{
|
||
|
|
int w, h, lx, lx2, dx, dy, xp, yp, comp, sum;
|
||
|
|
int x, y;
|
||
|
|
unsigned char *src[3];
|
||
|
|
|
||
|
|
x = bx / 16 + 1;
|
||
|
|
y = by / 16 + 1;
|
||
|
|
lx = coded_picture_width;
|
||
|
|
|
||
|
|
lx2 = coded_picture_width + 64;
|
||
|
|
src[0] = edgeframe[0];
|
||
|
|
src[1] = edgeframe[1];
|
||
|
|
src[2] = edgeframe[2];
|
||
|
|
|
||
|
|
/* P prediction */
|
||
|
|
w = 8;
|
||
|
|
h = 8;
|
||
|
|
/* Y */
|
||
|
|
/* 4 MV can be used without OBMC in * deblocking filter mode */
|
||
|
|
|
||
|
|
if (mode == MODE_INTER4V || mode == MODE_INTER4V_Q)
|
||
|
|
{
|
||
|
|
for (comp = 0; comp < 4; comp++)
|
||
|
|
{
|
||
|
|
dx = MV[0][comp + 1][y][x];
|
||
|
|
dy = MV[1][comp + 1][y][x];
|
||
|
|
|
||
|
|
xp = bx + ((comp & 1) << 3);
|
||
|
|
yp = by + ((comp & 2) << 2);
|
||
|
|
recon_comp(src[0], newframe[0], lx, lx2, w, h, xp, yp, dx, dy);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dx = MV[0][0][y][x];
|
||
|
|
dy = MV[1][0][y][x];
|
||
|
|
recon_comp(src[0], newframe[0], lx, lx2, w << 1, h << 1, bx, by, dx, dy);
|
||
|
|
// TODO: MC16x16
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Chroma */
|
||
|
|
if (mode == MODE_INTER4V || mode == MODE_INTER4V_Q)
|
||
|
|
{
|
||
|
|
sum = MV[0][1][y][x] + MV[0][2][y][x] + MV[0][3][y][x] + MV[0][4][y][x];
|
||
|
|
dx = sign(sum) * (roundtab[abs(sum) % 16] + (abs(sum) / 16) * 2);
|
||
|
|
|
||
|
|
sum = MV[1][1][y][x] + MV[1][2][y][x] + MV[1][3][y][x] + MV[1][4][y][x];
|
||
|
|
dy = sign(sum) * (roundtab[abs(sum) % 16] + (abs(sum) / 16) * 2);
|
||
|
|
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dx = MV[0][0][y][x];
|
||
|
|
dy = MV[1][0][y][x];
|
||
|
|
/* chroma rounding */
|
||
|
|
dx = (dx % 4 == 0 ? dx >> 1 : (dx >> 1) | 1);
|
||
|
|
dy = (dy % 4 == 0 ? dy >> 1 : (dy >> 1) | 1);
|
||
|
|
}
|
||
|
|
lx >>= 1;
|
||
|
|
bx >>= 1;
|
||
|
|
lx2 >>= 1;
|
||
|
|
by >>= 1;
|
||
|
|
/* Chroma */
|
||
|
|
recon_comp(src[1], newframe[1], lx, lx2, w, h, bx, by, dx, dy);
|
||
|
|
recon_comp(src[2], newframe[2], lx, lx2, w, h, bx, by, dx, dy);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void recon_comp(unsigned char *src,unsigned char *dst,int lx,int lx2,int w,int h,int x,int y,int dx,int dy)
|
||
|
|
{
|
||
|
|
int xint, xh, yint, yh;
|
||
|
|
unsigned char *s, *d;
|
||
|
|
|
||
|
|
xint = dx>>1;
|
||
|
|
xh = dx & 1;
|
||
|
|
yint = dy>>1;
|
||
|
|
yh = dy & 1;
|
||
|
|
|
||
|
|
/* origins */
|
||
|
|
s = src + lx2*(y+yint) + x + xint;
|
||
|
|
d = dst + lx*y + x;
|
||
|
|
|
||
|
|
if (!xh && !yh)
|
||
|
|
if (w!=8)
|
||
|
|
rec(s,d,lx,lx2,h);
|
||
|
|
else
|
||
|
|
recc(s,d,lx,lx2,h);
|
||
|
|
else if (!xh && yh)
|
||
|
|
if (w!=8)
|
||
|
|
h263_recv(s,d,lx,lx2,h);
|
||
|
|
else
|
||
|
|
recvc(s,d,lx,lx2,h);
|
||
|
|
else if (xh && !yh)
|
||
|
|
if (w!=8)
|
||
|
|
rech(s,d,lx,lx2,h);
|
||
|
|
else
|
||
|
|
rechc(s,d,lx,lx2,h);
|
||
|
|
else /* if (xh && yh) */
|
||
|
|
if (w!=8)
|
||
|
|
rec4(s,d,lx,lx2,h);
|
||
|
|
else
|
||
|
|
rec4c(s,d,lx,lx2,h);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rec(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
int j;
|
||
|
|
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
d[0] = s[0];
|
||
|
|
d[1] = s[1];
|
||
|
|
d[2] = s[2];
|
||
|
|
d[3] = s[3];
|
||
|
|
d[4] = s[4];
|
||
|
|
d[5] = s[5];
|
||
|
|
d[6] = s[6];
|
||
|
|
d[7] = s[7];
|
||
|
|
d[8] = s[8];
|
||
|
|
d[9] = s[9];
|
||
|
|
d[10] = s[10];
|
||
|
|
d[11] = s[11];
|
||
|
|
d[12] = s[12];
|
||
|
|
d[13] = s[13];
|
||
|
|
d[14] = s[14];
|
||
|
|
d[15] = s[15];
|
||
|
|
s+= lx2;
|
||
|
|
d+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void recc(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
int j;
|
||
|
|
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
d[0] = s[0];
|
||
|
|
d[1] = s[1];
|
||
|
|
d[2] = s[2];
|
||
|
|
d[3] = s[3];
|
||
|
|
d[4] = s[4];
|
||
|
|
d[5] = s[5];
|
||
|
|
d[6] = s[6];
|
||
|
|
d[7] = s[7];
|
||
|
|
s+= lx2;
|
||
|
|
d+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rech(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
unsigned char *dp,*sp;
|
||
|
|
int j;
|
||
|
|
unsigned int s1,s2;
|
||
|
|
|
||
|
|
sp = s;
|
||
|
|
dp = d;
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
s1=sp[0];
|
||
|
|
dp[0] = (unsigned int)(s1+(s2=sp[1])+1)>>1;
|
||
|
|
dp[1] = (unsigned int)(s2+(s1=sp[2])+1)>>1;
|
||
|
|
dp[2] = (unsigned int)(s1+(s2=sp[3])+1)>>1;
|
||
|
|
dp[3] = (unsigned int)(s2+(s1=sp[4])+1)>>1;
|
||
|
|
dp[4] = (unsigned int)(s1+(s2=sp[5])+1)>>1;
|
||
|
|
dp[5] = (unsigned int)(s2+(s1=sp[6])+1)>>1;
|
||
|
|
dp[6] = (unsigned int)(s1+(s2=sp[7])+1)>>1;
|
||
|
|
dp[7] = (unsigned int)(s2+(s1=sp[8])+1)>>1;
|
||
|
|
dp[8] = (unsigned int)(s1+(s2=sp[9])+1)>>1;
|
||
|
|
dp[9] = (unsigned int)(s2+(s1=sp[10])+1)>>1;
|
||
|
|
dp[10] = (unsigned int)(s1+(s2=sp[11])+1)>>1;
|
||
|
|
dp[11] = (unsigned int)(s2+(s1=sp[12])+1)>>1;
|
||
|
|
dp[12] = (unsigned int)(s1+(s2=sp[13])+1)>>1;
|
||
|
|
dp[13] = (unsigned int)(s2+(s1=sp[14])+1)>>1;
|
||
|
|
dp[14] = (unsigned int)(s1+(s2=sp[15])+1)>>1;
|
||
|
|
dp[15] = (unsigned int)(s2+sp[16]+1)>>1;
|
||
|
|
sp+= lx2;
|
||
|
|
dp+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rechc(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
unsigned char *dp,*sp;
|
||
|
|
int j;
|
||
|
|
unsigned int s1,s2;
|
||
|
|
|
||
|
|
sp = s;
|
||
|
|
dp = d;
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
s1=sp[0];
|
||
|
|
dp[0] = (unsigned int)(s1+(s2=sp[1])+1)>>1;
|
||
|
|
dp[1] = (unsigned int)(s2+(s1=sp[2])+1)>>1;
|
||
|
|
dp[2] = (unsigned int)(s1+(s2=sp[3])+1)>>1;
|
||
|
|
dp[3] = (unsigned int)(s2+(s1=sp[4])+1)>>1;
|
||
|
|
dp[4] = (unsigned int)(s1+(s2=sp[5])+1)>>1;
|
||
|
|
dp[5] = (unsigned int)(s2+(s1=sp[6])+1)>>1;
|
||
|
|
dp[6] = (unsigned int)(s1+(s2=sp[7])+1)>>1;
|
||
|
|
dp[7] = (unsigned int)(s2+sp[8]+1)>>1;
|
||
|
|
sp+= lx2;
|
||
|
|
dp+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void h263_recv(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
unsigned char *dp,*sp,*sp2;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
sp = s;
|
||
|
|
sp2 = s+lx2;
|
||
|
|
dp = d;
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
dp[0] = (unsigned int)(sp[0]+sp2[0]+1)>>1;
|
||
|
|
dp[1] = (unsigned int)(sp[1]+sp2[1]+1)>>1;
|
||
|
|
dp[2] = (unsigned int)(sp[2]+sp2[2]+1)>>1;
|
||
|
|
dp[3] = (unsigned int)(sp[3]+sp2[3]+1)>>1;
|
||
|
|
dp[4] = (unsigned int)(sp[4]+sp2[4]+1)>>1;
|
||
|
|
dp[5] = (unsigned int)(sp[5]+sp2[5]+1)>>1;
|
||
|
|
dp[6] = (unsigned int)(sp[6]+sp2[6]+1)>>1;
|
||
|
|
dp[7] = (unsigned int)(sp[7]+sp2[7]+1)>>1;
|
||
|
|
dp[8] = (unsigned int)(sp[8]+sp2[8]+1)>>1;
|
||
|
|
dp[9] = (unsigned int)(sp[9]+sp2[9]+1)>>1;
|
||
|
|
dp[10] = (unsigned int)(sp[10]+sp2[10]+1)>>1;
|
||
|
|
dp[11] = (unsigned int)(sp[11]+sp2[11]+1)>>1;
|
||
|
|
dp[12] = (unsigned int)(sp[12]+sp2[12]+1)>>1;
|
||
|
|
dp[13] = (unsigned int)(sp[13]+sp2[13]+1)>>1;
|
||
|
|
dp[14] = (unsigned int)(sp[14]+sp2[14]+1)>>1;
|
||
|
|
dp[15] = (unsigned int)(sp[15]+sp2[15]+1)>>1;
|
||
|
|
sp+= lx2;
|
||
|
|
sp2+= lx2;
|
||
|
|
dp+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void recvc(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
unsigned char *dp,*sp,*sp2;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
sp = s;
|
||
|
|
sp2 = s+lx2;
|
||
|
|
dp = d;
|
||
|
|
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
dp[0] = (unsigned int)(sp[0]+sp2[0]+1)>>1;
|
||
|
|
dp[1] = (unsigned int)(sp[1]+sp2[1]+1)>>1;
|
||
|
|
dp[2] = (unsigned int)(sp[2]+sp2[2]+1)>>1;
|
||
|
|
dp[3] = (unsigned int)(sp[3]+sp2[3]+1)>>1;
|
||
|
|
dp[4] = (unsigned int)(sp[4]+sp2[4]+1)>>1;
|
||
|
|
dp[5] = (unsigned int)(sp[5]+sp2[5]+1)>>1;
|
||
|
|
dp[6] = (unsigned int)(sp[6]+sp2[6]+1)>>1;
|
||
|
|
dp[7] = (unsigned int)(sp[7]+sp2[7]+1)>>1;
|
||
|
|
sp+= lx2;
|
||
|
|
sp2+= lx2;
|
||
|
|
dp+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rec4(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
unsigned char *dp,*sp,*sp2;
|
||
|
|
int j;
|
||
|
|
unsigned int s1,s2,s3,s4;
|
||
|
|
|
||
|
|
sp = s;
|
||
|
|
sp2 = s+lx2;
|
||
|
|
dp = d;
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
s1=sp[0]; s3=sp2[0];
|
||
|
|
dp[0] = (unsigned int)(s1+(s2=sp[1])+s3+(s4=sp2[1])+2)>>2;
|
||
|
|
dp[1] = (unsigned int)(s2+(s1=sp[2])+s4+(s3=sp2[2])+2)>>2;
|
||
|
|
dp[2] = (unsigned int)(s1+(s2=sp[3])+s3+(s4=sp2[3])+2)>>2;
|
||
|
|
dp[3] = (unsigned int)(s2+(s1=sp[4])+s4+(s3=sp2[4])+2)>>2;
|
||
|
|
dp[4] = (unsigned int)(s1+(s2=sp[5])+s3+(s4=sp2[5])+2)>>2;
|
||
|
|
dp[5] = (unsigned int)(s2+(s1=sp[6])+s4+(s3=sp2[6])+2)>>2;
|
||
|
|
dp[6] = (unsigned int)(s1+(s2=sp[7])+s3+(s4=sp2[7])+2)>>2;
|
||
|
|
dp[7] = (unsigned int)(s2+(s1=sp[8])+s4+(s3=sp2[8])+2)>>2;
|
||
|
|
dp[8] = (unsigned int)(s1+(s2=sp[9])+s3+(s4=sp2[9])+2)>>2;
|
||
|
|
dp[9] = (unsigned int)(s2+(s1=sp[10])+s4+(s3=sp2[10])+2)>>2;
|
||
|
|
dp[10] = (unsigned int)(s1+(s2=sp[11])+s3+(s4=sp2[11])+2)>>2;
|
||
|
|
dp[11] = (unsigned int)(s2+(s1=sp[12])+s4+(s3=sp2[12])+2)>>2;
|
||
|
|
dp[12] = (unsigned int)(s1+(s2=sp[13])+s3+(s4=sp2[13])+2)>>2;
|
||
|
|
dp[13] = (unsigned int)(s2+(s1=sp[14])+s4+(s3=sp2[14])+2)>>2;
|
||
|
|
dp[14] = (unsigned int)(s1+(s2=sp[15])+s3+(s4=sp2[15])+2)>>2;
|
||
|
|
dp[15] = (unsigned int)(s2+sp[16]+s4+sp2[16]+2)>>2;
|
||
|
|
sp+= lx2;
|
||
|
|
sp2+= lx2;
|
||
|
|
dp+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void rec4c(unsigned char *s,unsigned char *d,int lx,int lx2,int h)
|
||
|
|
{
|
||
|
|
unsigned char *dp,*sp,*sp2;
|
||
|
|
int j;
|
||
|
|
unsigned int s1,s2,s3,s4;
|
||
|
|
|
||
|
|
sp = s;
|
||
|
|
sp2 = s+lx2;
|
||
|
|
dp = d;
|
||
|
|
for (j=0; j<h; j++)
|
||
|
|
{
|
||
|
|
s1=sp[0]; s3=sp2[0];
|
||
|
|
dp[0] = (unsigned int)(s1+(s2=sp[1])+s3+(s4=sp2[1])+2)>>2;
|
||
|
|
dp[1] = (unsigned int)(s2+(s1=sp[2])+s4+(s3=sp2[2])+2)>>2;
|
||
|
|
dp[2] = (unsigned int)(s1+(s2=sp[3])+s3+(s4=sp2[3])+2)>>2;
|
||
|
|
dp[3] = (unsigned int)(s2+(s1=sp[4])+s4+(s3=sp2[4])+2)>>2;
|
||
|
|
dp[4] = (unsigned int)(s1+(s2=sp[5])+s3+(s4=sp2[5])+2)>>2;
|
||
|
|
dp[5] = (unsigned int)(s2+(s1=sp[6])+s4+(s3=sp2[6])+2)>>2;
|
||
|
|
dp[6] = (unsigned int)(s1+(s2=sp[7])+s3+(s4=sp2[7])+2)>>2;
|
||
|
|
dp[7] = (unsigned int)(s2+sp[8]+s4+sp2[8]+2)>>2;
|
||
|
|
sp+= lx2;
|
||
|
|
sp2+= lx2;
|
||
|
|
dp+= lx;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|