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