Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavc: Move vector_fmul_window to AVFloatDSPContext
  rtpdec_mpeg4: Check the remaining amount of data before reading

Conflicts:
	libavcodec/dsputil.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 33 insertions, 0 deletions

diff --git a/libavutil/ppc/float_dsp_altivec.c b/libavutil/ppc/float_dsp_altivec.c
index 6340e6c17b..081da90f1e 100644
--- a/libavutil/ppc/float_dsp_altivec.c
+++ b/libavutil/ppc/float_dsp_altivec.c
@@ -36,3 +36,36 @@ void ff_vector_fmul_altivec(float *dst, const float *src0, const float *src1,
         vec_st(d1, 16, dst + i);
     }
 }
+
+void ff_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);
+    }
+}