1 files changed, 78 insertions, 0 deletions
diff --git a/libavcodec/alpha/pixblockdsp_alpha.c b/libavcodec/alpha/pixblockdsp_alpha.c
new file mode 100644
index 0000000000..866b762b16
--- /dev/null
+++ b/libavcodec/alpha/pixblockdsp_alpha.c
@@ -0,0 +1,78 @@
+/*
+ * SIMD-optimized pixel operations
+ *
+ * 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/attributes.h"
+#include "libavcodec/pixblockdsp.h"
+#include "asm.h"
+
+static void get_pixels_mvi(int16_t *restrict block,
+                           const uint8_t *restrict pixels, ptrdiff_t line_size)
+{
+    int h = 8;
+
+    do {
+        uint64_t p;
+
+        p = ldq(pixels);
+        stq(unpkbw(p),       block);
+        stq(unpkbw(p >> 32), block + 4);
+
+        pixels += line_size;
+        block += 8;
+    } while (--h);
+}
+
+static void diff_pixels_mvi(int16_t *block, const uint8_t *s1, const uint8_t *s2,
+                            int stride) {
+    int h = 8;
+    uint64_t mask = 0x4040;
+
+    mask |= mask << 16;
+    mask |= mask << 32;
+    do {
+        uint64_t x, y, c, d, a;
+        uint64_t signs;
+
+        x = ldq(s1);
+        y = ldq(s2);
+        c = cmpbge(x, y);
+        d = x - y;
+        a = zap(mask, c);       /* We use 0x4040404040404040 here...  */
+        d += 4 * a;             /* ...so we can use s4addq here.      */
+        signs = zap(-1, c);
+
+        stq(unpkbw(d)       | (unpkbw(signs)       << 8), block);
+        stq(unpkbw(d >> 32) | (unpkbw(signs >> 32) << 8), block + 4);
+
+        s1 += stride;
+        s2 += stride;
+        block += 8;
+    } while (--h);
+}
+
+av_cold void ff_pixblockdsp_init_alpha(PixblockDSPContext *c, AVCodecContext *avctx,
+                                       unsigned high_bit_depth)
+{
+    if (amask(AMASK_MVI) == 0) {
+        if (!high_bit_depth)
+            c->get_pixels = get_pixels_mvi;
+        c->diff_pixels = diff_pixels_mvi;
+    }
+}