lavc: Move vector_fmul_window to AVFloatDSPContext

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

3 files changed, 41 insertions, 0 deletions

diff --git a/libavutil/ppc/float_dsp_altivec.c b/libavutil/ppc/float_dsp_altivec.c
index 55e3fbe91f..e5fd9aba33 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);
+    }
+}
diff --git a/libavutil/ppc/float_dsp_altivec.h b/libavutil/ppc/float_dsp_altivec.h
index 0b9425bef4..4d46edf61a 100644
--- a/libavutil/ppc/float_dsp_altivec.h
+++ b/libavutil/ppc/float_dsp_altivec.h
@@ -24,4 +24,8 @@
 extern void ff_vector_fmul_altivec(float *dst, const float *src0,
                                    const float *src1, int len);
 
+extern void ff_vector_fmul_window_altivec(float *dst, const float *src0,
+                                          const float *src1, const float *win,
+                                          int len);
+
 #endif /* AVUTIL_PPC_FLOAT_DSP_ALTIVEC_H */
diff --git a/libavutil/ppc/float_dsp_init.c b/libavutil/ppc/float_dsp_init.c
index 20527642cc..1134b56926 100644
--- a/libavutil/ppc/float_dsp_init.c
+++ b/libavutil/ppc/float_dsp_init.c
@@ -32,5 +32,9 @@ void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int bit_exact)
         return;
 
     fdsp->vector_fmul = ff_vector_fmul_altivec;
+
+    if (!bit_exact) {
+        fdsp->vector_fmul_window = ff_vector_fmul_window_altivec;
+    }
 #endif
 }