Yet another inverse telecine filter by Zoltan Hidvegi <mplayer@hzoli.2y.net>. Also heavily MMX centric.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@11601 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 186 insertions, 0 deletions

diff --git a/libmpcodecs/cmmx.h b/libmpcodecs/cmmx.h
new file mode 100644
index 0000000000..180248a11c
--- /dev/null
+++ b/libmpcodecs/cmmx.h
@@ -0,0 +1,186 @@
+/*
+ * x86 MMX and MMX2 packed byte operations in portable C.
+ * Extra instructions: pdiffub, pcmpzb, psumbw, pcmpgtub
+ * Author: Zoltan Hidvegi
+ */
+
+#ifndef __CMMX_H
+#define __CMMX_H
+
+typedef unsigned long cmmx_t;
+
+#define ONE_BYTES (~(cmmx_t)0 / 255)
+#define SIGN_BITS (ONE_BYTES << 7)
+#define LOWBW_MASK (~(cmmx_t)0 / 257)
+
+static inline cmmx_t
+paddb(cmmx_t a, cmmx_t b)
+{
+    return ((a & ~SIGN_BITS) + (b & ~SIGN_BITS)) ^ ((a^b) & SIGN_BITS);
+}
+
+static inline cmmx_t
+psubb(cmmx_t a, cmmx_t b)
+{
+    return ((a | SIGN_BITS) - (b & ~SIGN_BITS)) ^ (~(a^b) & SIGN_BITS);
+}
+
+static inline cmmx_t
+paddusb(cmmx_t a, cmmx_t b)
+{
+    cmmx_t s = (a & ~SIGN_BITS) + (b & ~SIGN_BITS);
+    cmmx_t abs = (a | b) & SIGN_BITS;
+    cmmx_t c = abs & (s | (a & b));
+    return s | abs | (abs - (c >> 7));
+}
+
+static inline cmmx_t
+paddusb_s(cmmx_t a, cmmx_t b)
+{
+    cmmx_t sum = a+b;
+    cmmx_t ov = sum & SIGN_BITS;
+    return sum + (sum ^ (ov - (ov>>7)));
+}
+
+static inline cmmx_t
+psubusb(cmmx_t a, cmmx_t b)
+{
+    cmmx_t s = (a | SIGN_BITS) - (b & ~SIGN_BITS);
+    cmmx_t anb = a & ~b;
+    cmmx_t c = (anb | (s & ~(a^b))) & SIGN_BITS;
+    return s & ((c & anb) | (c - (c >> 7)));
+}
+
+static inline cmmx_t
+psubusb_s(cmmx_t a, cmmx_t b)
+{
+    cmmx_t d = (a|SIGN_BITS) - b;
+    cmmx_t m = d & SIGN_BITS;
+    return d & (m - (m>>7));
+}
+
+static inline cmmx_t
+pcmpgtub(cmmx_t b, cmmx_t a)
+{
+    cmmx_t s = (a | SIGN_BITS) - (b & ~SIGN_BITS);
+    cmmx_t ret = ((~a & b) | (~s & ~(a ^ b))) & SIGN_BITS;
+    return ret | (ret - (ret >> 7));
+}
+
+static inline cmmx_t
+pdiffub(cmmx_t a, cmmx_t b)
+{
+    cmmx_t xs = (~a ^ b) & SIGN_BITS;
+    cmmx_t s = ((a | SIGN_BITS) - (b & ~SIGN_BITS)) ^ xs;
+    cmmx_t gt = ((~a & b) | (s & xs)) & SIGN_BITS;
+    cmmx_t gt7 = gt >> 7;
+    return (s ^ gt ^ (gt - gt7)) + gt7;
+}
+
+static inline cmmx_t
+pdiffub_s(cmmx_t a, cmmx_t b)
+{
+    cmmx_t d = (a|SIGN_BITS) - b;
+    cmmx_t g = (~d & SIGN_BITS) >> 7;
+    return (d ^ (SIGN_BITS-g)) + g;
+}
+
+static inline cmmx_t
+pmaxub(cmmx_t a, cmmx_t b)
+{
+    return psubusb(a,b) + b;
+}
+
+static inline cmmx_t
+pminub(cmmx_t a, cmmx_t b)
+{
+    return paddusb(a,~b) - ~b;
+}
+
+static inline cmmx_t
+pminub_s(cmmx_t a, cmmx_t b)
+{
+    cmmx_t d = (a|SIGN_BITS) - b;
+    cmmx_t m = ~SIGN_BITS + ((d&SIGN_BITS)>>7);
+    return ((d&m) + b) & ~SIGN_BITS;
+}
+
+static inline cmmx_t
+pavgb(cmmx_t a, cmmx_t b)
+{
+    cmmx_t ao = a & ONE_BYTES;
+    cmmx_t bo = b & ONE_BYTES;
+    return ((a^ao)>>1) + ((b^bo)>>1) + (ao|bo);
+}
+
+static inline cmmx_t
+pavgb_s(cmmx_t a, cmmx_t b)
+{
+    return ((a+b+ONE_BYTES)>>1) & ~SIGN_BITS;
+}
+
+static inline cmmx_t
+p31avgb(cmmx_t a, cmmx_t b)
+{
+    cmmx_t ao = a & (3*ONE_BYTES);
+    cmmx_t bo = b & (3*ONE_BYTES);
+    return 3*((a^ao)>>2) + ((b^bo)>>2) +
+	(((3*ao+bo+2*ONE_BYTES)>>2) & (3*ONE_BYTES));
+}
+
+static inline cmmx_t
+p31avgb_s(cmmx_t a, cmmx_t b)
+{
+    cmmx_t avg = ((a+b)>>1) & ~SIGN_BITS;
+    return pavgb_s(avg, a);
+}
+
+static inline unsigned long
+psumbw(cmmx_t a)
+{
+    cmmx_t t = (a & LOWBW_MASK) + ((a>>8) & LOWBW_MASK);
+    unsigned long ret =
+	(unsigned long)t + (unsigned long)(t >> (4*sizeof(cmmx_t)));
+    if (sizeof(cmmx_t) > 4)
+	ret += ret >> 16;
+    return ret & 0xffff;
+}
+
+static inline unsigned long
+psumbw_s(cmmx_t a)
+{
+    unsigned long ret =
+	(unsigned long)a + (unsigned long)(a >> (4*sizeof(cmmx_t)));
+    if (sizeof(cmmx_t) <= 4)
+	return (ret & 0xff) + ((ret>>8) & 0xff);
+    ret = (ret & 0xff00ff) + ((ret>>8) & 0xff00ff);
+    ret += ret >> 16;
+    return ret & 0xffff;
+}
+
+static inline unsigned long
+psadbw(cmmx_t a, cmmx_t b)
+{
+    return psumbw(pdiffub(a,b));
+}
+
+static inline unsigned long
+psadbw_s(cmmx_t a, cmmx_t b)
+{
+    return psumbw_s(pdiffub_s(a,b));
+}
+
+static inline cmmx_t
+pcmpzb(cmmx_t a)
+{
+    cmmx_t ret = (((a | SIGN_BITS) - ONE_BYTES) | a) & SIGN_BITS;
+    return ~(ret | (ret - (ret >> 7)));
+}
+
+static inline cmmx_t
+pcmpeqb(cmmx_t a, cmmx_t b)
+{
+    return pcmpzb(a ^ b);
+}
+
+#endif