adding ffmpeg specific version

1 files changed, 145 insertions, 0 deletions

diff --git a/ffmpeg1/libavcodec/ppc/int_altivec.c b/ffmpeg1/libavcodec/ppc/int_altivec.c
new file mode 100644
index 0000000..4386b13
--- /dev/null
+++ b/ffmpeg1/libavcodec/ppc/int_altivec.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2007 Luca Barbato <lu_zero@gentoo.org>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ ** @file
+ ** integer misc ops.
+ **/
+
+#include "config.h"
+#if HAVE_ALTIVEC_H
+#include <altivec.h>
+#endif
+
+#include "libavutil/attributes.h"
+#include "libavutil/ppc/types_altivec.h"
+#include "libavcodec/dsputil.h"
+
+#include "dsputil_altivec.h"
+
+static int ssd_int8_vs_int16_altivec(const int8_t *pix1, const int16_t *pix2,
+                                     int size) {
+    int i, size16;
+    vector signed char vpix1;
+    vector signed short vpix2, vdiff, vpix1l,vpix1h;
+    union { vector signed int vscore;
+            int32_t score[4];
+          } u;
+    u.vscore = vec_splat_s32(0);
+//
+//XXX lazy way, fix it later
+
+#define vec_unaligned_load(b) \
+    vec_perm(vec_ld(0,b),vec_ld(15,b),vec_lvsl(0, b));
+
+    size16 = size >> 4;
+    while(size16) {
+//        score += (pix1[i]-pix2[i])*(pix1[i]-pix2[i]);
+        //load pix1 and the first batch of pix2
+
+        vpix1 = vec_unaligned_load(pix1);
+        vpix2 = vec_unaligned_load(pix2);
+        pix2 += 8;
+        //unpack
+        vpix1h = vec_unpackh(vpix1);
+        vdiff  = vec_sub(vpix1h, vpix2);
+        vpix1l = vec_unpackl(vpix1);
+        // load another batch from pix2
+        vpix2 = vec_unaligned_load(pix2);
+        u.vscore = vec_msum(vdiff, vdiff, u.vscore);
+        vdiff  = vec_sub(vpix1l, vpix2);
+        u.vscore = vec_msum(vdiff, vdiff, u.vscore);
+        pix1 += 16;
+        pix2 += 8;
+        size16--;
+    }
+    u.vscore = vec_sums(u.vscore, vec_splat_s32(0));
+
+    size %= 16;
+    for (i = 0; i < size; i++) {
+        u.score[3] += (pix1[i]-pix2[i])*(pix1[i]-pix2[i]);
+    }
+    return u.score[3];
+}
+
+static int32_t scalarproduct_int16_altivec(const int16_t *v1, const int16_t *v2,
+                                           int order)
+{
+    int i;
+    LOAD_ZERO;
+    const vec_s16 *pv;
+    register vec_s16 vec1;
+    register vec_s32 res = vec_splat_s32(0), t;
+    int32_t ires;
+
+    for(i = 0; i < order; i += 8){
+        pv = (const vec_s16*)v1;
+        vec1 = vec_perm(pv[0], pv[1], vec_lvsl(0, v1));
+        t = vec_msum(vec1, vec_ld(0, v2), zero_s32v);
+        res = vec_sums(t, res);
+        v1 += 8;
+        v2 += 8;
+    }
+    res = vec_splat(res, 3);
+    vec_ste(res, 0, &ires);
+    return ires;
+}
+
+static int32_t scalarproduct_and_madd_int16_altivec(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
+{
+    LOAD_ZERO;
+    vec_s16 *pv1 = (vec_s16*)v1;
+    register vec_s16 muls = {mul,mul,mul,mul,mul,mul,mul,mul};
+    register vec_s16 t0, t1, i0, i1, i4;
+    register vec_s16 i2 = vec_ld(0, v2), i3 = vec_ld(0, v3);
+    register vec_s32 res = zero_s32v;
+    register vec_u8 align = vec_lvsl(0, v2);
+    int32_t ires;
+    order >>= 4;
+    do {
+        i1 = vec_ld(16, v2);
+        t0 = vec_perm(i2, i1, align);
+        i2 = vec_ld(32, v2);
+        t1 = vec_perm(i1, i2, align);
+        i0 = pv1[0];
+        i1 = pv1[1];
+        res = vec_msum(t0, i0, res);
+        res = vec_msum(t1, i1, res);
+        i4 = vec_ld(16, v3);
+        t0 = vec_perm(i3, i4, align);
+        i3 = vec_ld(32, v3);
+        t1 = vec_perm(i4, i3, align);
+        pv1[0] = vec_mladd(t0, muls, i0);
+        pv1[1] = vec_mladd(t1, muls, i1);
+        pv1 += 2;
+        v2  += 8;
+        v3  += 8;
+    } while(--order);
+    res = vec_splat(vec_sums(res, zero_s32v), 3);
+    vec_ste(res, 0, &ires);
+    return ires;
+}
+
+av_cold void ff_int_init_altivec(DSPContext *c, AVCodecContext *avctx)
+{
+    c->ssd_int8_vs_int16 = ssd_int8_vs_int16_altivec;
+    c->scalarproduct_int16 = scalarproduct_int16_altivec;
+    c->scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_altivec;
+}