1 files changed, 103 insertions, 0 deletions
diff --git a/libavcodec/ppc/mpegvideoencdsp.c b/libavcodec/ppc/mpegvideoencdsp.c
new file mode 100644
index 0000000..b5348e6
--- /dev/null
+++ b/libavcodec/ppc/mpegvideoencdsp.c
@@ -0,0 +1,103 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include <stdint.h>
+#if HAVE_ALTIVEC_H
+#include <altivec.h>
+#endif
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/ppc/cpu.h"
+#include "libavutil/ppc/types_altivec.h"
+#include "libavutil/ppc/util_altivec.h"
+#include "libavcodec/mpegvideoencdsp.h"
+
+#if HAVE_ALTIVEC
+
+static int pix_norm1_altivec(uint8_t *pix, int line_size)
+{
+    int i, s = 0;
+    const vector unsigned int zero =
+        (const vector unsigned int) vec_splat_u32(0);
+    vector unsigned char perm = vec_lvsl(0, pix);
+    vector unsigned int sv = (vector unsigned int) vec_splat_u32(0);
+    vector signed int sum;
+
+    for (i = 0; i < 16; i++) {
+        /* Read the potentially unaligned pixels. */
+        vector unsigned char pixl = vec_ld(0,  pix);
+        vector unsigned char pixr = vec_ld(15, pix);
+        vector unsigned char pixv = vec_perm(pixl, pixr, perm);
+
+        /* Square the values, and add them to our sum. */
+        sv = vec_msum(pixv, pixv, sv);
+
+        pix += line_size;
+    }
+    /* Sum up the four partial sums, and put the result into s. */
+    sum = vec_sums((vector signed int) sv, (vector signed int) zero);
+    sum = vec_splat(sum, 3);
+    vec_ste(sum, 0, &s);
+
+    return s;
+}
+
+static int pix_sum_altivec(uint8_t *pix, int line_size)
+{
+    int i, s;
+    const vector unsigned int zero =
+        (const vector unsigned int) vec_splat_u32(0);
+    vector unsigned char perm = vec_lvsl(0, pix);
+    vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
+    vector signed int sumdiffs;
+
+    for (i = 0; i < 16; i++) {
+        /* Read the potentially unaligned 16 pixels into t1. */
+        vector unsigned char pixl = vec_ld(0,  pix);
+        vector unsigned char pixr = vec_ld(15, pix);
+        vector unsigned char t1   = vec_perm(pixl, pixr, perm);
+
+        /* Add each 4 pixel group together and put 4 results into sad. */
+        sad = vec_sum4s(t1, sad);
+
+        pix += line_size;
+    }
+
+    /* Sum up the four partial sums, and put the result into s. */
+    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
+    sumdiffs = vec_splat(sumdiffs, 3);
+    vec_ste(sumdiffs, 0, &s);
+
+    return s;
+}
+
+#endif /* HAVE_ALTIVEC */
+
+av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c,
+                                         AVCodecContext *avctx)
+{
+#if HAVE_ALTIVEC
+    if (!PPC_ALTIVEC(av_get_cpu_flags()))
+        return;
+
+    c->pix_norm1 = pix_norm1_altivec;
+    c->pix_sum   = pix_sum_altivec;
+#endif /* HAVE_ALTIVEC */
+}