// -*- c++ -*- // First, get and save our possible Bob values // Assume our pixels are layed out as follows with x the calc'd bob value // and the other pixels are from the current field // // j a b c k current field // x calculated line // m d e f n current field // // we calc the bob value as: // x2 = either avg(a,f), avg(c,d), avg(b,e), avg(j,n), or avg(k,m) // selected for the smallest of abs(a,f), abs(c,d), or abs(b,e), etc. // a,f "movq -2(%%"XBX"), %%mm0\n\t" // value a from top left "movq 2(%%"XBX", %%"XCX"), %%mm1\n\t" // value f from bottom right "movq %%mm0, %%mm6\n\t" // pavgb %%mm6, %%mm1 // avg(a,f), also best so far V_PAVGB ("%%mm6", "%%mm1", "%%mm7", _ShiftMask) // avg(a,f), also best so far "movq %%mm0, %%mm7\n\t" "psubusb %%mm1, %%mm7\n\t" "psubusb %%mm0, %%mm1\n\t" "por %%mm1, %%mm7\n\t" // abs diff, also best so far // c,d "movq 2(%%"XBX"), %%mm0\n\t" // value a from top left "movq -2(%%"XBX", %%"XCX"), %%mm1\n\t" // value f from bottom right "movq %%mm0, %%mm2\n\t" // pavgb %%mm2, %%mm1 // avg(c,d) V_PAVGB ("%%mm2", "%%mm1", "%%mm3", _ShiftMask) // avg(c,d) "movq %%mm0, %%mm3\n\t" "psubusb %%mm1, %%mm3\n\t" "psubusb %%mm0, %%mm1\n\t" "por %%mm1, %%mm3\n\t" // abs(c,d) "movq %%mm3, %%mm1\n\t" // keep copy "psubusb %%mm7, %%mm3\n\t" // nonzero where new weights bigger, else 0 "pxor %%mm4, %%mm4\n\t" "pcmpeqb %%mm4, %%mm3\n\t" // now ff where new better, else 00 "pcmpeqb %%mm3, %%mm4\n\t" // here ff where old better, else 00 "pand %%mm3, %%mm1\n\t" // keep only better new avg and abs "pand %%mm3, %%mm2\n\t" "pand %%mm4, %%mm6\n\t" "pand %%mm4, %%mm7\n\t" "por %%mm2, %%mm6\n\t" // and merge new & old vals keeping best "por %%mm1, %%mm7\n\t" "por "_UVMask", %%mm7\n\t" // but we know chroma is worthless so far "pand "_YMask", %%mm5\n\t" // mask out chroma from here also // j,n "movq -4(%%"XBX"), %%mm0\n\t" // value j from top left "movq 4(%%"XBX", %%"XCX"), %%mm1\n\t" // value n from bottom right "movq %%mm0, %%mm2\n\t" // pavgb %%mm2, %%mm1 // avg(j,n) V_PAVGB ("%%mm2", "%%mm1", "%%mm3", _ShiftMask) // avg(j,n) "movq %%mm0, %%mm3\n\t" "psubusb %%mm1, %%mm3\n\t" "psubusb %%mm0, %%mm1\n\t" "por %%mm1, %%mm3\n\t" // abs(j-n) "movq %%mm3, %%mm1\n\t" // keep copy "psubusb %%mm7, %%mm3\n\t" // nonzero where new weights bigger, else 0 "pxor %%mm4, %%mm4\n\t" "pcmpeqb %%mm4, %%mm3\n\t" // now ff where new better, else 00 "pcmpeqb %%mm3, %%mm4\n\t" // here ff where old better, else 00 "pand %%mm3, %%mm1\n\t" // keep only better new avg and abs "pand %%mm2, %%mm3\n\t" "pand %%mm4, %%mm6\n\t" "pand %%mm4, %%mm7\n\t" "por %%mm3, %%mm6\n\t" // and merge new & old vals keeping best "por %%mm1, %%mm7\n\t" // " // k, m "movq 4(%%"XBX"), %%mm0\n\t" // value k from top right "movq -4(%%"XBX", %%"XCX"), %%mm1\n\t" // value n from bottom left "movq %%mm0, %%mm4\n\t" // pavgb %%mm4, %%mm1 // avg(k,m) V_PAVGB ("%%mm4", "%%mm1", "%%mm3", _ShiftMask) // avg(k,m) "movq %%mm0, %%mm3\n\t" "psubusb %%mm1, %%mm3\n\t" "psubusb %%mm0, %%mm1\n\t" "por %%mm1, %%mm3\n\t" // abs(k,m) "movq %%mm3, %%mm1\n\t" // keep copy "movq %%mm4, %%mm2\n\t" // avg(k,m) "psubusb %%mm7, %%mm3\n\t" // nonzero where new weights bigger, else 0 "pxor %%mm4, %%mm4\n\t" "pcmpeqb %%mm4, %%mm3\n\t" // now ff where new better, else 00 "pcmpeqb %%mm3, %%mm4\n\t" // here ff where old better, else 00 "pand %%mm3, %%mm1\n\t" // keep only better new avg and abs "pand %%mm2, %%mm3\n\t" "pand %%mm4, %%mm6\n\t" "pand %%mm4, %%mm7\n\t" "por %%mm3, %%mm6\n\t" // and merge new & old vals keeping best "por %%mm1, %%mm7\n\t" // " // b,e "movq (%%"XBX"), %%mm0\n\t" // value b from top "movq (%%"XBX", %%"XCX"), %%mm1\n\t" // value e from bottom // We will also calc here the max/min values to later limit comb // so the max excursion will not exceed the Max_Comb constant #ifdef SKIP_SEARCH "movq %%mm0, %%mm2\n\t" // pminub %%mm2, %%mm1 V_PMINUB ("%%mm2", "%%mm1", "%%mm4") // pmaxub %%mm6, %%mm2 // clip our current results so far to be above this V_PMAXUB ("%%mm6", "%%mm2") "movq %%mm0, %%mm2\n\t" V_PMAXUB ("%%mm2", "%%mm1") // pminub %%mm6, %%mm2 // clip our current results so far to be below this V_PMINUB ("%%mm6", "%%mm2", "%%mm4") #else "movq %%mm0, %%mm2\n\t" "movq (%%"XAX"), %%mm4\n\t" "psubusb %%mm4, %%mm2\n\t" "psubusb %%mm0, %%mm4\n\t" "por %%mm2, %%mm4\n\t" // abs diff "movq %%mm1, %%mm2\n\t" "movq (%%"XAX", %%"XCX"), %%mm3\n\t" "psubusb %%mm3, %%mm2\n\t" "psubusb %%mm1, %%mm3\n\t" "por %%mm2, %%mm3\n\t" // abs diff // pmaxub %%mm3, %%mm4 // top or bottom pixel moved most V_PMAXUB ("%%mm3", "%%mm4") // top or bottom pixel moved most "psubusb "_Max_Mov", %%mm3\n\t" // moved more than allowed? or goes to 0? "pxor %%mm4, %%mm4\n\t" "pcmpeqb %%mm4, %%mm3\n\t" // now ff where low motion, else high motion "movq %%mm0, %%mm2\n\t" // pminub %%mm2, %%mm1 V_PMINUB ("%%mm2", "%%mm1", "%%mm4") // pmaxub %%mm6, %%mm2 // clip our current results so far to be above this V_PMAXUB ("%%mm6", "%%mm2") "psubusb %%mm3, %%mm2\n\t" // maybe decrease it to 0000.. if no surround motion "movq %%mm2, "_Min_Vals"\n\t" "movq %%mm0, %%mm2\n\t" V_PMAXUB ("%%mm2", "%%mm1") // pminub %%mm6, %%mm2 // clip our current results so far to be below this V_PMINUB ("%%mm6", "%%mm2", "%%mm4") "paddusb %%mm3, %%mm2\n\t" // maybe increase it to ffffff if no surround motion "movq %%mm2, "_Max_Vals"\n\t" #endif "movq %%mm0, %%mm2\n\t" // pavgb %%mm2, %%mm1 // avg(b,e) V_PAVGB ("%%mm2", "%%mm1", "%%mm3", _ShiftMask) // avg(b,e) "movq %%mm0, %%mm3\n\t" "psubusb %%mm1, %%mm3\n\t" "psubusb %%mm0, %%mm1\n\t" "por %%mm1, %%mm3\n\t" // abs(c,d) "movq %%mm3, %%mm1\n\t" // keep copy of diffs "pxor %%mm4, %%mm4\n\t" "psubusb %%mm7, %%mm3\n\t" // nonzero where new weights bigger, else 0 "pcmpeqb %%mm4, %%mm3\n\t" // now ff where new better, else 00 "pcmpeqb %%mm3, %%mm4\n\t" // here ff where old better, else 00 "pand %%mm3, %%mm1\n\t" "pand %%mm3, %%mm2\n\t" "pand %%mm4, %%mm6\n\t" "pand %%mm4, %%mm7\n\t" "por %%mm2, %%mm6\n\t" // our x2 value "por %%mm1, %%mm7\n\t" // our x2 diffs "movq %%mm7, %%mm4\n\t" // save as bob uncertainty indicator