early-access version 1432

externals/ffmpeg/libavcodec/alpha/blockdsp_alpha.c

@@ -0,0 +1,49 @@
+/*
+ * Alpha optimised block operations
+ * Copyright (c) 2002 Falk Hueffner <falk@debian.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 <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavcodec/blockdsp.h"
+#include "asm.h"
+
+static void clear_blocks_axp(int16_t *blocks) {
+    uint64_t *p = (uint64_t *) blocks;
+    int n = sizeof(int16_t) * 6 * 64;
+
+    do {
+        p[0] = 0;
+        p[1] = 0;
+        p[2] = 0;
+        p[3] = 0;
+        p[4] = 0;
+        p[5] = 0;
+        p[6] = 0;
+        p[7] = 0;
+        p += 8;
+        n -= 8 * 8;
+    } while (n);
+}
+
+av_cold void ff_blockdsp_init_alpha(BlockDSPContext *c)
+{
+    c->clear_blocks = clear_blocks_axp;
+}