www.pudn.com > NETVIDEO.rar > reconstruct.c
#include "mpeg3video.h"
#include
#ifdef HAVE_MMX
#ifdef HAVE_3Dnow
static inline void recva_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
__asm__(
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq (%4), %%mm2\n" /* 8 s +lx */
"movq 8(%4), %%mm3\n" /* 8 s +lx **/
"pavgusb %%mm2, %%mm0\n"
"addl %3, %1\n"
"pavgusb %%mm3, %%mm1\n"
"movq (%2), %%mm2\n" /* 8 d */
"movq 8(%2), %%mm3\n" /* 8 d */
"pavgusb %%mm2, %%mm0\n"
"addl %3, %4\n"
"pavgusb %%mm3, %%mm1\n"
"movq %%mm0, (%2)\n"
"movq %%mm1, 8(%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
}
static inline void recvac_mmx(unsigned char *s, unsigned char *d, int lx,int lx2, int h)
{
__asm__(
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%4), %%mm2\n" /* 8 s +lx */
"addl %3, %1\n"
"pavgusb %%mm2, %%mm0\n"
"movq (%2), %%mm3\n" /* 8 d */
"addl %3, %4\n"
"pavgusb %%mm3, %%mm0\n"
"movq %%mm0, (%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
}
static inline void rech_mmx(unsigned char *s, unsigned char *d, int lx2, int h)
{
__asm__ (
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s */
"movq 9(%1), %%mm3\n" /* 8 s */
"pavgusb %%mm2, %%mm0\n"
"addl %3, %1\n"
"pavgusb %%mm3, %%mm1\n"
"movq %%mm0, (%2)\n"
"movq %%mm1, 8(%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
}
static inline void rechc_mmx(unsigned char *s, unsigned char *d, int lx2, int h)
{
__asm__ (
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s +1 */
"addl %3, %1\n"
"pavgusb %%mm2, %%mm0\n"
"movq %%mm0, (%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
}
static inline void recha_mmx(unsigned char *s, unsigned char *d,int lx2, int h)
{
__asm__ (
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s */
"movq 9(%1), %%mm3\n" /* 8 s */
"pavgusb %%mm2, %%mm0\n"
"addl %3, %1\n"
"pavgusb %%mm3, %%mm1\n"
"movq (%2), %%mm2\n" /* 8 d */
"movq 8(%2), %%mm3\n" /* 8 d */
"pavgusb %%mm2, %%mm0\n"
"pavgusb %%mm3, %%mm1\n"
"movq %%mm0, (%2)\n"
"movq %%mm1, 8(%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
}
static inline void rechac_mmx(unsigned char *s,unsigned char *d, int lx2, int h)
{
__asm__ (
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s */
"addl %3, %1\n"
"pavgusb %%mm2, %%mm0\n"
"movq (%2), %%mm1\n" /* 8 d */
"pavgusb %%mm1, %%mm0\n"
"movq %%mm0, (%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
}
static inline void rec4_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
__asm__ __volatile__(
"movq (%1), %%mm0\n" /* 8 s */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s +1*/
"movq 9(%1), %%mm3\n" /* 8 s +1*/
".align 8\n"
"1:"
"movq (%4), %%mm4\n" /* 8 s+lx */
"pavgusb %%mm2, %%mm0\n"
"movq 8(%4), %%mm5\n" /* 8 s+lx */
"pavgusb %%mm3, %%mm1\n"
"movq 1(%4), %%mm6\n" /* 8 s+lx +1*/
"pavgusb %%mm4, %%mm0\n"
"movq 9(%4), %%mm7\n" /* 8 s+lx +1*/
"pavgusb %%mm5, %%mm1\n"
"pavgusb %%mm6, %%mm0\n"
"addl %3, %4\n"
"pavgusb %%mm7, %%mm1\n"
"movq %%mm0, (%2)\n"
"movq %%mm6, %%mm2\n"
"movq %%mm7, %%mm3\n"
"movq %%mm1, 8(%2)\n"
"movq %%mm4, %%mm0\n"
"movq %%mm5, %%mm1\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
}
static inline void rec4c_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
__asm__ __volatile__(
"movq (%1), %%mm0\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s +1*/
".align 8\n"
"1:"
"movq (%4), %%mm4\n" /* 8 s+lx */
"pavgusb %%mm2, %%mm0\n"
"movq 1(%4), %%mm6\n" /* 8 s+lx +1*/
"pavgusb %%mm4, %%mm0\n"
"addl %3, %4\n"
"pavgusb %%mm6, %%mm0\n"
"movq %%mm0, (%2)\n"
"movq %%mm6, %%mm2\n"
"movq %%mm4, %%mm0\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
}
static inline void rec4a_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
__asm__ __volatile__(
"movq (%1), %%mm0\n" /* 8 s */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s +1*/
"movq 9(%1), %%mm3\n" /* 8 s +1*/
".align 8\n"
"1:"
"movq (%4), %%mm4\n" /* 8 s+lx */
"pavgusb %%mm2, %%mm0\n"
"movq 8(%4), %%mm5\n" /* 8 s+lx */
"pavgusb %%mm3, %%mm1\n"
"movq 1(%4), %%mm6\n" /* 8 s+lx +1*/
"pavgusb %%mm4, %%mm0\n"
"movq 9(%4), %%mm7\n" /* 8 s+lx +1*/
"pavgusb %%mm5, %%mm1\n"
"movq (%2), %%mm2\n"
"pavgusb %%mm6, %%mm0\n"
"movq 8(%2), %%mm3\n"
"pavgusb %%mm2, %%mm0\n"
"addl %3, %4\n"
"pavgusb %%mm3, %%mm1\n"
"movq %%mm0, (%2)\n"
"pavgusb %%mm7, %%mm1\n"
"movq %%mm6, %%mm2\n"
"movq %%mm7, %%mm3\n"
"movq %%mm1, 8(%2)\n"
"movq %%mm4, %%mm0\n"
"movq %%mm5, %%mm1\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
}
static inline void rec4ac_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
__asm__ __volatile__(
"movq (%1), %%mm0\n" /* 8 s */
"movq 1(%1), %%mm2\n" /* 8 s +1*/
".align 8\n"
"1:"
"movq (%4), %%mm4\n" /* 8 s+lx */
"pavgusb %%mm2, %%mm0\n"
"movq 1(%4), %%mm6\n" /* 8 s+lx +1*/
"pavgusb %%mm4, %%mm0\n"
"movq (%2), %%mm1\n" /* 8 d */
"pavgusb %%mm6, %%mm0\n"
"addl %3, %4\n"
"pavgusb %%mm1, %%mm0\n"
"movq %%mm6, %%mm2\n"
"movq %%mm0, (%2)\n"
"movq %%mm4, %%mm0\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
}
#else // HAVE_3DNOW
static long long ADD_1 = 0x0101010101010101LL;
static long long MASK_AND = 0x7f7f7f7f7f7f7f7fLL;
#endif
static inline void rec_mmx(unsigned char *s, unsigned char *d, int lx2, int h)
{
__asm__ __volatile__(
".align 8\n"
"1:\t"
"movq ( %1 ), %%mm0\n" /* 8 s */
"movq 8( %1 ), %%mm2\n" /* 16 s */
"movq %%mm0, ( %2 )\n"
"addl %3, %1\n"
"movq %%mm2, 8( %2 )\n"
"decl %0\n"
"leal (%2, %3), %2\n"
"jnz 1b"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
}
static inline void recc_mmx(unsigned char *s, unsigned char *d, int lx2, int h)
{
__asm__ __volatile__(
".align 8\n"
"1:\t"
"movq ( %1 ), %%mm0\n"
"addl %3, %1\n"
"movq %%mm0, ( %2 )\n"
"decl %0\n"
"leal (%2, %3), %2\n"
"jnz 1b"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
}
static inline void reca_mmx(unsigned char *s, unsigned char *d, int lx2, int h)
{
#ifdef HAVE_3Dnow
__asm__ (
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%2), %%mm2\n" /* 8 d */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq 8(%2), %%mm3\n" /* 8 d */
"pavgusb %%mm2, %%mm0\n"
"addl %3, %1\n"
"pavgusb %%mm3, %%mm1\n"
"movq %%mm0, (%2)\n"
"movq %%mm1, 8(%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
#else /* No 3dnow */
__asm__ (
"movq MASK_AND, %%mm5\n"
"movq ADD_1, %%mm6\n"
"1:\t"
"movq (%1),%%mm0\n" /* Load 16 pixels from each row */
"movq (%2),%%mm1\n"
"movq 8(%1),%%mm2\n"
"movq 8(%2),%%mm3\n"
"psrlw $1,%%mm0\n" /* Shift pixels down */
"psrlw $1,%%mm1\n"
"pand %%mm5,%%mm0\n" /* Zero out significant bit */
"psrlw $1,%%mm2\n"
"pand %%mm5,%%mm1\n"
"psrlw $1,%%mm3\n"
"pand %%mm5,%%mm2\n"
"paddusb %%mm1,%%mm0\n" /* Add pixels */
"pand %%mm5,%%mm3\n"
"paddusb %%mm3,%%mm2\n"
"paddusb %%mm6,%%mm0\n" /* Add 1 to results */
"paddusb %%mm6,%%mm2\n"
"movq %%mm0,(%2)\n"
"addl %3,%1\n"
"movq %%mm2, 8(%2)\n"
"decl %0\n"
"leal (%2, %3), %2\n"
"jnz 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
#endif
}
static inline void recac_mmx(unsigned char *s, unsigned char *d, int lx2, int h)
{
#ifdef HAVE_3Dnow
__asm__ (
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%2), %%mm2\n" /* 8 d */
"pavgusb %%mm2, %%mm0\n"
"addl %3, %1\n"
"movq %%mm0, (%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
#else /* No 3dnow */
__asm__ (
"movq MASK_AND, %%mm5\n"
"movq ADD_1, %%mm6\n"
"1:\t"
"movq (%1),%%mm0\n"
"movq (%2),%%mm1\n"
"psrlw $1,%%mm0\n"
"psrlw $1,%%mm1\n"
"pand %%mm5,%%mm0\n"
"pand %%mm5,%%mm1\n"
"paddusb %%mm1,%%mm0\n"
"paddusb %%mm6,%%mm0\n"
"addl %3,%1\n"
"movq %%mm0,(%2)\n"
"decl %0\n"
"leal (%2, %3), %2\n"
"jnz 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2)
);
#endif
}
static inline void recv_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
#ifdef HAVE_3Dnow
__asm__(
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%4), %%mm2\n" /* 8 s +lx */
"movq 8(%1), %%mm1\n" /* 8 s */
"movq 8(%4), %%mm3\n" /* 8 s +lx **/
"pavgusb %%mm2, %%mm0\n"
"addl %3, %1\n"
"pavgusb %%mm3, %%mm1\n"
"movq %%mm0, (%2)\n"
"addl %3, %4\n"
"movq %%mm1, 8(%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
#else
__asm__ (
"movq MASK_AND, %%mm5\n"
"movq ADD_1, %%mm6\n"
"1:\t"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%4), %%mm1\n" /* 8 s +lx */
"movq 8(%1), %%mm2\n" /* 8 s */
"movq 8(%4), %%mm3\n" /* 8 s +lx **/
"psrlw $1,%%mm0\n"
"psrlw $1,%%mm1\n"
"pand %%mm5,%%mm0\n"
"psrlw $1,%%mm2\n"
"pand %%mm5,%%mm1\n"
"psrlw $1,%%mm3\n"
"pand %%mm5,%%mm2\n"
"paddusb %%mm1,%%mm0\n"
"pand %%mm5,%%mm3\n"
"paddusb %%mm3,%%mm2\n"
"paddusb %%mm6,%%mm0\n"
"paddusb %%mm6,%%mm2\n"
"movq %%mm0,(%2)\n"
"addl %3,%1\n"
"movq %%mm2, 8(%2)\n"
"addl %3,%4\n"
"decl %0\n"
"leal (%2, %3), %2\n"
"jnz 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
#endif
}
static inline void recvc_mmx(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
#ifdef HAVE_3Dnow
__asm__(
".align 8\n"
"1:"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%4), %%mm2\n" /* 8 s +lx */
"addl %3, %1\n"
"pavgusb %%mm2, %%mm0\n"
"addl %3, %4\n"
"movq %%mm0, (%2)\n"
"addl %3, %2\n"
"loop 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
#else
__asm__ (
"movq MASK_AND, %%mm5\n"
"movq ADD_1, %%mm6\n"
"1:\t"
"movq (%1), %%mm0\n" /* 8 s */
"movq (%4), %%mm1\n" /* 8 s +lx */
"psrlw $1,%%mm0\n"
"psrlw $1,%%mm1\n"
"pand %%mm5,%%mm0\n"
"pand %%mm5,%%mm1\n"
"paddusb %%mm1,%%mm0\n"
"addl %3,%1\n"
"paddusb %%mm6,%%mm0\n"
"addl %3,%4\n"
"movq %%mm0,(%2)\n"
"decl %0\n"
"leal (%2, %3), %2\n"
"jnz 1b\n"
:
: "c" (h), "r" (s), "r" (d), "r" (lx2), "r" (s +lx)
);
#endif
}
#endif // HAVE_MMX
static __inline void rec(unsigned char *s, unsigned char *d, int lx2, int h)
{
int j;
for(j = 0; j < h; j++, s += lx2, d += lx2)
{
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];
}
}
static __inline void recc(unsigned char *s, unsigned char *d, int lx2, int h)
{
int j;
for(j = 0; j < h; j++, s += lx2, d += lx2)
{
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];
}
}
static __inline void reca(unsigned char *s, unsigned char *d, int lx2, int h)
{
int j;
for(j = 0; j < h; j++, s +=lx2, d +=lx2)
{
d[0] = (unsigned int)(d[0] + s[0] + 1) >> 1;
d[1] = (unsigned int)(d[1] + s[1] + 1) >> 1;
d[2] = (unsigned int)(d[2] + s[2] + 1) >> 1;
d[3] = (unsigned int)(d[3] + s[3] + 1) >> 1;
d[4] = (unsigned int)(d[4] + s[4] + 1) >> 1;
d[5] = (unsigned int)(d[5] + s[5] + 1) >> 1;
d[6] = (unsigned int)(d[6] + s[6] + 1) >> 1;
d[7] = (unsigned int)(d[7] + s[7] + 1) >> 1;
d[8] = (unsigned int)(d[8] + s[8] + 1) >> 1;
d[9] = (unsigned int)(d[9] + s[9] + 1) >> 1;
d[10] = (unsigned int)(d[10] + s[10] + 1) >> 1;
d[11] = (unsigned int)(d[11] + s[11] + 1) >> 1;
d[12] = (unsigned int)(d[12] + s[12] + 1) >> 1;
d[13] = (unsigned int)(d[13] + s[13] + 1) >> 1;
d[14] = (unsigned int)(d[14] + s[14] + 1) >> 1;
d[15] = (unsigned int)(d[15] + s[15] + 1) >> 1;
}
}
static __inline void recac(unsigned char *s, unsigned char *d, int lx2, int h)
{
int j;
for(j = 0; j < h; j++, s += lx2, d += lx2)
{
d[0] = (unsigned int)(d[0] + s[0] + 1)>>1;
d[1] = (unsigned int)(d[1] + s[1] + 1)>>1;
d[2] = (unsigned int)(d[2] + s[2] + 1)>>1;
d[3] = (unsigned int)(d[3] + s[3] + 1)>>1;
d[4] = (unsigned int)(d[4] + s[4] + 1)>>1;
d[5] = (unsigned int)(d[5] + s[5] + 1)>>1;
d[6] = (unsigned int)(d[6] + s[6] + 1)>>1;
d[7] = (unsigned int)(d[7] + s[7] + 1)>>1;
}
}
static __inline void reconstruct_recv(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
unsigned char *dp,*sp,*sp2;
int j;
sp = s;
sp2 = s + lx;
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+= lx2;
}
}
static __inline 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+lx;
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+= lx2;
}
}
static __inline void recva(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
unsigned char *dp,*sp,*sp2;
int j;
sp = s;
sp2 = s+lx;
dp = d;
for (j=0; j>1) + 1)>>1;
dp[1] = (dp[1] + ((unsigned int)(sp[1]+sp2[1]+1)>>1) + 1)>>1;
dp[2] = (dp[2] + ((unsigned int)(sp[2]+sp2[2]+1)>>1) + 1)>>1;
dp[3] = (dp[3] + ((unsigned int)(sp[3]+sp2[3]+1)>>1) + 1)>>1;
dp[4] = (dp[4] + ((unsigned int)(sp[4]+sp2[4]+1)>>1) + 1)>>1;
dp[5] = (dp[5] + ((unsigned int)(sp[5]+sp2[5]+1)>>1) + 1)>>1;
dp[6] = (dp[6] + ((unsigned int)(sp[6]+sp2[6]+1)>>1) + 1)>>1;
dp[7] = (dp[7] + ((unsigned int)(sp[7]+sp2[7]+1)>>1) + 1)>>1;
dp[8] = (dp[8] + ((unsigned int)(sp[8]+sp2[8]+1)>>1) + 1)>>1;
dp[9] = (dp[9] + ((unsigned int)(sp[9]+sp2[9]+1)>>1) + 1)>>1;
dp[10] = (dp[10] + ((unsigned int)(sp[10]+sp2[10]+1)>>1) + 1)>>1;
dp[11] = (dp[11] + ((unsigned int)(sp[11]+sp2[11]+1)>>1) + 1)>>1;
dp[12] = (dp[12] + ((unsigned int)(sp[12]+sp2[12]+1)>>1) + 1)>>1;
dp[13] = (dp[13] + ((unsigned int)(sp[13]+sp2[13]+1)>>1) + 1)>>1;
dp[14] = (dp[14] + ((unsigned int)(sp[14]+sp2[14]+1)>>1) + 1)>>1;
dp[15] = (dp[15] + ((unsigned int)(sp[15]+sp2[15]+1)>>1) + 1)>>1;
sp+= lx2;
sp2+= lx2;
dp+= lx2;
}
}
static __inline void recvac(unsigned char *s, unsigned char *d, int lx,int lx2, int h){
unsigned char *dp,*sp,*sp2;
int j;
sp = s;
sp2 = s+lx;
dp = d;
for (j=0; j>1) + 1)>>1;
dp[1] = (dp[1] + ((unsigned int)(sp[1]+sp2[1]+1)>>1) + 1)>>1;
dp[2] = (dp[2] + ((unsigned int)(sp[2]+sp2[2]+1)>>1) + 1)>>1;
dp[3] = (dp[3] + ((unsigned int)(sp[3]+sp2[3]+1)>>1) + 1)>>1;
dp[4] = (dp[4] + ((unsigned int)(sp[4]+sp2[4]+1)>>1) + 1)>>1;
dp[5] = (dp[5] + ((unsigned int)(sp[5]+sp2[5]+1)>>1) + 1)>>1;
dp[6] = (dp[6] + ((unsigned int)(sp[6]+sp2[6]+1)>>1) + 1)>>1;
dp[7] = (dp[7] + ((unsigned int)(sp[7]+sp2[7]+1)>>1) + 1)>>1;
sp+= lx2;
sp2+= lx2;
dp+= lx2;
}
}
static __inline void rech(unsigned char *s, unsigned char *d, int lx2, int h){
unsigned char *dp,*sp;
unsigned int s1,s2;
int j;
sp = s;
dp = d;
for (j=0; j>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+= lx2;
}
}
static __inline void rechc(unsigned char *s,unsigned char *d, int lx2, int h){
unsigned char *dp,*sp;
unsigned int s1,s2;
int j;
sp = s;
dp = d;
for (j=0; j>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+= lx2;
}
}
static __inline void recha(unsigned char *s, unsigned char *d,int lx2, int h)
{
unsigned char *dp,*sp;
unsigned int s1,s2;
int j;
sp = s;
dp = d;
for (j = 0; j < h; j++)
{
s1 = sp[0];
dp[0] = (dp[0] + ((unsigned int)(s1 + (s2 = sp[1]) + 1) >> 1) + 1) >> 1;
dp[1] = (dp[1] + ((unsigned int)(s2 + (s1 = sp[2]) + 1) >> 1) + 1) >> 1;
dp[2] = (dp[2] + ((unsigned int)(s1 + (s2 = sp[3]) + 1) >> 1) + 1) >> 1;
dp[3] = (dp[3] + ((unsigned int)(s2 + (s1 = sp[4]) + 1) >> 1) + 1) >> 1;
dp[4] = (dp[4] + ((unsigned int)(s1 + (s2 = sp[5]) + 1) >> 1) + 1) >> 1;
dp[5] = (dp[5] + ((unsigned int)(s2 + (s1 = sp[6]) + 1) >> 1) + 1) >> 1;
dp[6] = (dp[6] + ((unsigned int)(s1 + (s2 = sp[7]) + 1) >> 1) + 1) >> 1;
dp[7] = (dp[7] + ((unsigned int)(s2 + (s1 = sp[8]) + 1) >> 1) + 1) >> 1;
dp[8] = (dp[8] + ((unsigned int)(s1 + (s2 = sp[9]) + 1) >> 1) + 1) >> 1;
dp[9] = (dp[9] + ((unsigned int)(s2 + (s1 = sp[10]) + 1) >> 1) + 1) >> 1;
dp[10] = (dp[10] + ((unsigned int)(s1 + (s2 = sp[11]) + 1) >> 1) + 1) >> 1;
dp[11] = (dp[11] + ((unsigned int)(s2 + (s1 = sp[12]) + 1) >> 1) + 1) >> 1;
dp[12] = (dp[12] + ((unsigned int)(s1 + (s2 = sp[13]) + 1) >> 1) + 1) >> 1;
dp[13] = (dp[13] + ((unsigned int)(s2 + (s1 = sp[14]) + 1) >> 1) + 1) >> 1;
dp[14] = (dp[14] + ((unsigned int)(s1 + (s2 = sp[15]) + 1) >> 1) + 1) >> 1;
dp[15] = (dp[15] + ((unsigned int)(s2 + sp[16] + 1) >> 1) + 1) >> 1;
sp += lx2;
dp += lx2;
}
}
static __inline void rechac(unsigned char *s,unsigned char *d, int lx2, int h)
{
unsigned char *dp,*sp;
unsigned int s1,s2;
int j;
sp = s;
dp = d;
for(j = 0; j < h; j++)
{
s1 = sp[0];
dp[0] = (dp[0] + ((unsigned int)(s1 + (s2 = sp[1]) + 1) >> 1) + 1) >> 1;
dp[1] = (dp[1] + ((unsigned int)(s2 + (s1 = sp[2]) + 1) >> 1) + 1) >> 1;
dp[2] = (dp[2] + ((unsigned int)(s1 + (s2 = sp[3]) + 1) >> 1) + 1) >> 1;
dp[3] = (dp[3] + ((unsigned int)(s2 + (s1 = sp[4]) + 1) >> 1) + 1) >> 1;
dp[4] = (dp[4] + ((unsigned int)(s1 + (s2 = sp[5]) + 1) >> 1) + 1) >> 1;
dp[5] = (dp[5] + ((unsigned int)(s2 + (s1 = sp[6]) + 1) >> 1) + 1) >> 1;
dp[6] = (dp[6] + ((unsigned int)(s1 + (s2 = sp[7]) + 1) >> 1) + 1) >> 1;
dp[7] = (dp[7] + ((unsigned int)(s2 + sp[8] + 1) >> 1) + 1) >> 1;
sp += lx2;
dp += lx2;
}
}
static __inline void rec4(unsigned char *s, unsigned char *d, int lx, int lx2, int h)
{
unsigned char *dp,*sp,*sp2;
unsigned int s1,s2,s3,s4;
int j;
sp = s;
sp2 = s+lx;
dp = d;
for (j=0; j>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+= lx2;
}
}
static __inline void rec4c(unsigned char *s,unsigned char *d, int lx, int lx2, int h)
{
unsigned char *dp,*sp,*sp2;
unsigned int s1,s2,s3,s4;
int j;
sp = s;
sp2 = s+lx;
dp = d;
for (j=0; j>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+= lx2;
}
}
static __inline void rec4a(unsigned char *s,unsigned char *d, int lx, int lx2, int h)
{
unsigned char *dp=d, *sp=s, *sp2=s+lx;
unsigned int s1, s2, s3, s4;
int j;
/*
sp = s;
sp2 = s+lx;
dp = d;
*/
for (j=0; j>2) + 1)>>1;
dp[1] = (dp[1] + ((unsigned int)(s2+(s1=sp[2])+s4+(s3=sp2[2])+2)>>2) + 1)>>1;
dp[2] = (dp[2] + ((unsigned int)(s1+(s2=sp[3])+s3+(s4=sp2[3])+2)>>2) + 1)>>1;
dp[3] = (dp[3] + ((unsigned int)(s2+(s1=sp[4])+s4+(s3=sp2[4])+2)>>2) + 1)>>1;
dp[4] = (dp[4] + ((unsigned int)(s1+(s2=sp[5])+s3+(s4=sp2[5])+2)>>2) + 1)>>1;
dp[5] = (dp[5] + ((unsigned int)(s2+(s1=sp[6])+s4+(s3=sp2[6])+2)>>2) + 1)>>1;
dp[6] = (dp[6] + ((unsigned int)(s1+(s2=sp[7])+s3+(s4=sp2[7])+2)>>2) + 1)>>1;
dp[7] = (dp[7] + ((unsigned int)(s2+(s1=sp[8])+s4+(s3=sp2[8])+2)>>2) + 1)>>1;
dp[8] = (dp[8] + ((unsigned int)(s1+(s2=sp[9])+s3+(s4=sp2[9])+2)>>2) + 1)>>1;
dp[9] = (dp[9] + ((unsigned int)(s2+(s1=sp[10])+s4+(s3=sp2[10])+2)>>2) + 1)>>1;
dp[10] = (dp[10] + ((unsigned int)(s1+(s2=sp[11])+s3+(s4=sp2[11])+2)>>2) + 1)>>1;
dp[11] = (dp[11] + ((unsigned int)(s2+(s1=sp[12])+s4+(s3=sp2[12])+2)>>2) + 1)>>1;
dp[12] = (dp[12] + ((unsigned int)(s1+(s2=sp[13])+s3+(s4=sp2[13])+2)>>2) + 1)>>1;
dp[13] = (dp[13] + ((unsigned int)(s2+(s1=sp[14])+s4+(s3=sp2[14])+2)>>2) + 1)>>1;
dp[14] = (dp[14] + ((unsigned int)(s1+(s2=sp[15])+s3+(s4=sp2[15])+2)>>2) + 1)>>1;
dp[15] = (dp[15] + ((unsigned int)(s2+sp[16]+s4+sp2[16]+2)>>2) + 1)>>1;
sp+= lx2;
sp2+= lx2;
dp+= lx2;
}
}
static __inline void rec4ac(unsigned char *s,unsigned char *d, int lx, int lx2, int h)
{
unsigned char *dp=d, *sp=s, *sp2=s+lx;
unsigned int s1,s2,s3,s4;
int j;
/*
sp = s;
sp2 = s+lx;
dp = d;
*/
for (j=0; j>2) + 1)>>1;
dp[1] = (dp[1] + ((unsigned int)(s2+(s1=sp[2])+s4+(s3=sp2[2])+2)>>2) + 1)>>1;
dp[2] = (dp[2] + ((unsigned int)(s1+(s2=sp[3])+s3+(s4=sp2[3])+2)>>2) + 1)>>1;
dp[3] = (dp[3] + ((unsigned int)(s2+(s1=sp[4])+s4+(s3=sp2[4])+2)>>2) + 1)>>1;
dp[4] = (dp[4] + ((unsigned int)(s1+(s2=sp[5])+s3+(s4=sp2[5])+2)>>2) + 1)>>1;
dp[5] = (dp[5] + ((unsigned int)(s2+(s1=sp[6])+s4+(s3=sp2[6])+2)>>2) + 1)>>1;
dp[6] = (dp[6] + ((unsigned int)(s1+(s2=sp[7])+s3+(s4=sp2[7])+2)>>2) + 1)>>1;
dp[7] = (dp[7] + ((unsigned int)(s2+sp[8]+s4+sp2[8]+2)>>2) + 1)>>1;
sp+= lx2;
sp2+= lx2;
dp+= lx2;
}
}
static __inline
void recon_comp(mpeg3video_t *video,
unsigned char *src,
unsigned char *dst,
int lx,
int lx2,
int w,
int h,
int x,
int y,
int dx,
int dy,
int addflag)
{
int switcher;
unsigned char *s, *d;
/* half pel scaling */
switcher = (dx & 1) << 3 | (dy & 1) << 2 | w;
if(addflag) switcher |= 2;
/* origins */
s = src + lx * (y + (dy >> 1)) + x + (dx >> 1);
d = dst + lx * y + x;
// Accelerated functions
#ifdef HAVE_MMX
if(video->have_mmx)
{
switch(switcher)
{
case 0x3: reca_mmx(s, d, lx2, h); break;
case 0x2: recac_mmx(s, d, lx2, h); break;
case 0x1: rec_mmx(s, d, lx2, h); break;
case 0x0: recc_mmx(s, d, lx2, h); break;
case 0x7: recva_mmx(s, d, lx, lx2, h); break;
case 0x6: recvac_mmx(s, d, lx, lx2, h); break;
case 0x5: recv_mmx(s, d, lx, lx2, h); break;
case 0x4: recvc_mmx(s, d, lx, lx2, h); break;
case 0x9: rech_mmx(s, d, lx2, h); break;
case 0x8: rechc_mmx(s, d, lx2, h); break;
}
}
else
#endif
{
switch(switcher)
{
case 0x3: reca(s, d, lx2, h); break;
case 0x2: recac(s, d, lx2, h); break;
case 0x1: rec(s, d, lx2, h); break;
case 0x0: recc(s, d, lx2, h); break;
case 0x7: recva(s, d, lx, lx2, h); break;
case 0x6: recvac(s, d, lx, lx2, h); break;
case 0x5: reconstruct_recv(s, d, lx, lx2, h); break;
case 0x4: recvc(s, d, lx, lx2, h); break;
case 0x9: rech(s, d, lx2, h); break;
case 0x8: rechc(s, d, lx2, h); break;
}
}
// Unaccelerated functions
switch(switcher)
{
case 0xb: recha(s, d, lx2, h); break;
case 0xa: rechac(s, d, lx2, h); break;
case 0xf: rec4a(s, d, lx, lx2, h); break;
case 0xe: rec4ac(s, d, lx, lx2, h); break;
case 0xd: rec4(s, d, lx, lx2, h); break;
case 0xc: rec4c(s, d, lx, lx2, h); break;
}
}
/*
unsigned char *src[]; * prediction source buffer *
int sfield; * prediction source field number (0 or 1) *
unsigned char *dst[]; * prediction destination buffer *
int dfield; * prediction destination field number (0 or 1)*
int lx,lx2; * horizontal offsets *
int w,h; * prediction block/sub-block width, height *
int x,y; * pixel co-ordinates of top-left sample in current MB *
int dx,dy; * horizontal, vertical motion vector *
int addflag; * add prediction error to prediction ? *
*/
static void recon(mpeg3video_t *video,
unsigned char *src[],
int sfield,
unsigned char *dst[],
int dfield,
int lx,
int lx2,
int w,
int h,
int x,
int y,
int dx,
int dy,
int addflag)
{
/* Y */
recon_comp(video, (src[0] + (sfield ? (lx2 >> 1) : 0)),
dst[0] + (dfield ? (lx2 >> 1) : 0),
lx, lx2, w, h, x, y, dx, dy, addflag);
if(video->chroma_format != CHROMA444)
{
lx >>= 1;
dx /= 2;
lx2 >>= 1;
w = 0;
x >>= 1;
}
if(video->chroma_format == CHROMA420)
{
h >>= 1;
dy /= 2;
y >>= 1;
}
/* Cb */
recon_comp(video, (src[1] + (sfield ? (lx2 >> 1) : 0)),
dst[1] + (dfield ? (lx2 >> 1) : 0),
lx, lx2, w, h, x, y, dx, dy, addflag);
/* Cr */
recon_comp(video, (src[2] + (sfield ? (lx2 >> 1) : 0)),
dst[2] + (dfield ? (lx2 >> 1) : 0),
lx, lx2, w, h, x, y, dx, dy, addflag);
}
#define WIDTH 1
int mpeg3video_reconstruct(mpeg3video_t *video,
int bx,
int by,
int mb_type,
int motion_type,
int PMV[2][2][2],
int mv_field_sel[2][2],
int dmvector[2],
int stwtype)
{
int currentfield;
unsigned char **predframe;
int DMV[2][2];
int stwtop, stwbot;
stwtop = stwtype % 3; /* 0:temporal, 1 : (spat+temp) / 2, 2 : spatial */
stwbot = stwtype / 3;
if((mb_type & MB_FORWARD) || (video->pict_type == P_TYPE))
{
if(video->pict_struct == FRAME_PICTURE)
{
if((motion_type == MC_FRAME) || !(mb_type & MB_FORWARD))
{
/* frame-based prediction */
{
if(stwtop < 2)
recon(video, video->oldrefframe, 0, video->newframe, 0,
video->coded_picture_width, video->coded_picture_width << 1, WIDTH, 8, bx, by,
PMV[0][0][0], PMV[0][0][1], stwtop);
if(stwbot < 2)
recon(video, video->oldrefframe, 1, video->newframe, 1,
video->coded_picture_width, video->coded_picture_width << 1, WIDTH, 8, bx, by,
PMV[0][0][0], PMV[0][0][1], stwbot);
}
}
else if(motion_type == MC_FIELD) /* field-based prediction */
{
/* top field prediction */
if(stwtop < 2)
recon(video, video->oldrefframe, mv_field_sel[0][0], video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by >> 1,
PMV[0][0][0], PMV[0][0][1] >> 1, stwtop);
/* bottom field prediction */
if(stwbot < 2)
recon(video, video->oldrefframe, mv_field_sel[1][0], video->newframe, 1,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by >> 1,
PMV[1][0][0], PMV[1][0][1] >> 1, stwbot);
}
else if(motion_type == MC_DMV)
{
/* dual prime prediction */
/* calculate derived motion vectors */
mpeg3video_calc_dmv(video,
DMV,
dmvector,
PMV[0][0][0],
PMV[0][0][1] >> 1);
if(stwtop < 2)
{
/* predict top field from top field */
recon(video, video->oldrefframe, 0, video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by>>1,
PMV[0][0][0], PMV[0][0][1] >> 1, 0);
/* predict and add to top field from bottom field */
recon(video, video->oldrefframe, 1, video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by>>1,
DMV[0][0], DMV[0][1], 1);
}
if(stwbot < 2)
{
/* predict bottom field from bottom field */
recon(video, video->oldrefframe, 1, video->newframe, 1,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by>>1,
PMV[0][0][0], PMV[0][0][1]>>1, 0);
/* predict and add to bottom field from top field */
recon(video, video->oldrefframe, 0, video->newframe, 1,
video->coded_picture_width << 1, video->coded_picture_width<<1, WIDTH, 8, bx, by>>1,
DMV[1][0], DMV[1][1], 1);
}
}
else
/* invalid motion_type */
/* fprintf(stderr, "reconstruct: invalid motion_type\n"); */
;
}
else
{
/* TOP_FIELD or BOTTOM_FIELD */
/* field picture */
currentfield = (video->pict_struct == BOTTOM_FIELD);
/* determine which frame to use for prediction */
if((video->pict_type == P_TYPE) && video->secondfield
&& (currentfield != mv_field_sel[0][0]))
predframe = video->refframe; /* same frame */
else
predframe = video->oldrefframe; /* previous frame */
if((motion_type == MC_FIELD) || !(mb_type & MB_FORWARD))
{
/* field-based prediction */
if(stwtop < 2)
recon(video, predframe,mv_field_sel[0][0],video->newframe,0,
video->coded_picture_width << 1,video->coded_picture_width << 1,WIDTH,16,bx,by,
PMV[0][0][0],PMV[0][0][1],stwtop);
}
else
if(motion_type == MC_16X8)
{
if(stwtop < 2)
{
recon(video, predframe, mv_field_sel[0][0], video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by,
PMV[0][0][0], PMV[0][0][1], stwtop);
/* determine which frame to use for lower half prediction */
if((video->pict_type==P_TYPE) && video->secondfield
&& (currentfield!=mv_field_sel[1][0]))
predframe = video->refframe; /* same frame */
else
predframe = video->oldrefframe; /* previous frame */
recon(video, predframe, mv_field_sel[1][0], video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by+8,
PMV[1][0][0], PMV[1][0][1], stwtop);
}
}
else
if(motion_type == MC_DMV) /* dual prime prediction */
{
if(video->secondfield)
predframe = video->refframe; /* same frame */
else
predframe = video->oldrefframe; /* previous frame */
/* calculate derived motion vectors */
mpeg3video_calc_dmv(video,
DMV,
dmvector,
PMV[0][0][0],
PMV[0][0][1]);
/* predict from field of same parity */
recon(video, video->oldrefframe, currentfield, video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 16, bx, by,
PMV[0][0][0], PMV[0][0][1], 0);
/* predict from field of opposite parity */
recon(video, predframe, !currentfield, video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 16, bx, by,
DMV[0][0], DMV[0][1], 1);
}
else
/* invalid motion_type */
/* fprintf(stderr, "reconstruct: invalid motion_type\n"); */
;
}
stwtop = stwbot = 1;
}
if(mb_type & MB_BACKWARD)
{
if(video->pict_struct == FRAME_PICTURE)
{
if(motion_type == MC_FRAME)
{
/* frame-based prediction */
if(stwtop < 2)
recon(video, video->refframe, 0, video->newframe, 0,
video->coded_picture_width, video->coded_picture_width << 1, WIDTH, 8, bx, by,
PMV[0][1][0], PMV[0][1][1], stwtop);
if(stwbot < 2)
recon(video, video->refframe, 1, video->newframe, 1,
video->coded_picture_width, video->coded_picture_width << 1, WIDTH, 8, bx, by,
PMV[0][1][0], PMV[0][1][1], stwbot);
}
else
{
/* field-based prediction */
/* top field prediction */
if(stwtop < 2)
{
recon(video, video->refframe, mv_field_sel[0][1], video->newframe, 0,
(video->coded_picture_width << 1), (video->coded_picture_width<<1), WIDTH, 8, bx, (by >> 1),
PMV[0][1][0], (PMV[0][1][1] >> 1), stwtop);
}
/* bottom field prediction */
if(stwbot < 2)
{
recon(video, video->refframe, mv_field_sel[1][1], video->newframe, 1, (video->coded_picture_width << 1),
(video->coded_picture_width << 1), WIDTH, 8, bx, (by>>1),
PMV[1][1][0], (PMV[1][1][1]>>1), stwbot);
}
}
}
else
{
/* TOP_FIELD or BOTTOM_FIELD */
/* field picture */
if(motion_type == MC_FIELD)
{
/* field-based prediction */
recon(video, video->refframe, mv_field_sel[0][1], video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 16, bx, by,
PMV[0][1][0], PMV[0][1][1], stwtop);
}
else if(motion_type==MC_16X8)
{
recon(video, video->refframe, mv_field_sel[0][1], video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by,
PMV[0][1][0], PMV[0][1][1], stwtop);
recon(video, video->refframe, mv_field_sel[1][1], video->newframe, 0,
video->coded_picture_width << 1, video->coded_picture_width << 1, WIDTH, 8, bx, by+8,
PMV[1][1][0], PMV[1][1][1], stwtop);
}
else
/* invalid motion_type */
/* fprintf(stderr, "reconstruct: invalid motion_type\n"); */
;
}
} /* mb_type & MB_BACKWARD */
return 0;
}