Updated FFMPEG to version 1.1.2, using this project: http://sourceforge.net/projects/ffmpeg4android/

project/jni/ffmpeg/libavcodec/ppc/float_altivec.c

@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2006 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
+ */
+
+#include "libavutil/ppc/util_altivec.h"
+#include "libavcodec/dsputil.h"
+
+#include "dsputil_altivec.h"
+
+static void vector_fmul_reverse_altivec(float *dst, const float *src0,
+                                        const float *src1, int len)
+{
+    int i;
+    vector float d, s0, s1, h0, l0,
+                 s2, s3, zero = (vector float)vec_splat_u32(0);
+    src1 += len-4;
+    for(i=0; i<len-7; i+=8) {
+        s1 = vec_ld(0, src1-i);              // [a,b,c,d]
+        s0 = vec_ld(0, src0+i);
+        l0 = vec_mergel(s1, s1);             // [c,c,d,d]
+        s3 = vec_ld(-16, src1-i);
+        h0 = vec_mergeh(s1, s1);             // [a,a,b,b]
+        s2 = vec_ld(16, src0+i);
+        s1 = vec_mergeh(vec_mergel(l0,h0),   // [d,b,d,b]
+                        vec_mergeh(l0,h0));  // [c,a,c,a]
+                                             // [d,c,b,a]
+        l0 = vec_mergel(s3, s3);
+        d = vec_madd(s0, s1, zero);
+        h0 = vec_mergeh(s3, s3);
+        vec_st(d, 0, dst+i);
+        s3 = vec_mergeh(vec_mergel(l0,h0),
+                        vec_mergeh(l0,h0));
+        d = vec_madd(s2, s3, zero);
+        vec_st(d, 16, dst+i);
+    }
+}
+
+static void vector_fmul_add_altivec(float *dst, const float *src0,
+                                    const float *src1, const float *src2,
+                                    int len)
+{
+    int i;
+    vector float d, s0, s1, s2, t0, t1, edges;
+    vector unsigned char align = vec_lvsr(0,dst),
+                         mask = vec_lvsl(0, dst);
+
+    for (i=0; i<len-3; i+=4) {
+        t0 = vec_ld(0, dst+i);
+        t1 = vec_ld(15, dst+i);
+        s0 = vec_ld(0, src0+i);
+        s1 = vec_ld(0, src1+i);
+        s2 = vec_ld(0, src2+i);
+        edges = vec_perm(t1 ,t0, mask);
+        d = vec_madd(s0,s1,s2);
+        t1 = vec_perm(d, edges, align);
+        t0 = vec_perm(edges, d, align);
+        vec_st(t1, 15, dst+i);
+        vec_st(t0, 0, dst+i);
+    }
+}
+
+static void vector_fmul_window_altivec(float *dst, const float *src0, const float *src1, const float *win, int len)
+{
+    vector float zero, t0, t1, s0, s1, wi, wj;
+    const vector unsigned char reverse = vcprm(3,2,1,0);
+    int i,j;
+
+    dst += len;
+    win += len;
+    src0+= len;
+
+    zero = (vector float)vec_splat_u32(0);
+
+    for(i=-len*4, j=len*4-16; i<0; i+=16, j-=16) {
+        s0 = vec_ld(i, src0);
+        s1 = vec_ld(j, src1);
+        wi = vec_ld(i, win);
+        wj = vec_ld(j, win);
+
+        s1 = vec_perm(s1, s1, reverse);
+        wj = vec_perm(wj, wj, reverse);
+
+        t0 = vec_madd(s0, wj, zero);
+        t0 = vec_nmsub(s1, wi, t0);
+        t1 = vec_madd(s0, wi, zero);
+        t1 = vec_madd(s1, wj, t1);
+        t1 = vec_perm(t1, t1, reverse);
+
+        vec_st(t0, i, dst);
+        vec_st(t1, j, dst);
+    }
+}
+
+void ff_float_init_altivec(DSPContext* c, AVCodecContext *avctx)
+{
+    c->vector_fmul_reverse = vector_fmul_reverse_altivec;
+    c->vector_fmul_add = vector_fmul_add_altivec;
+    if(!(avctx->flags & CODEC_FLAG_BITEXACT)) {
+        c->vector_fmul_window = vector_fmul_window_altivec;
+    }
+}