hpeldsp: Add half-pel functions (currently copies of dsputil)

Signed-off-by: Martin Storsjö <martin@martin.st>

1 files changed, 56 insertions, 0 deletions

diff --git a/libavcodec/hpeldsp.c b/libavcodec/hpeldsp.c
new file mode 100644
index 0000000000..426802970c
--- /dev/null
+++ b/libavcodec/hpeldsp.c
@@ -0,0 +1,56 @@
+/*
+ * Half-pel DSP functions.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * gmc & q-pel & 32/64 bit based MC by Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * Half-pel DSP functions.
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/intreadwrite.h"
+#include "hpeldsp.h"
+
+#define BIT_DEPTH 8
+#include "hpeldsp_template.c"
+
+av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
+{
+#define hpel_funcs(prefix, idx, num) \
+    c->prefix ## _pixels_tab idx [0] = prefix ## _pixels ## num ## _8_c; \
+    c->prefix ## _pixels_tab idx [1] = prefix ## _pixels ## num ## _x2_8_c; \
+    c->prefix ## _pixels_tab idx [2] = prefix ## _pixels ## num ## _y2_8_c; \
+    c->prefix ## _pixels_tab idx [3] = prefix ## _pixels ## num ## _xy2_8_c
+
+    hpel_funcs(put, [0], 16);
+    hpel_funcs(put, [1],  8);
+    hpel_funcs(put, [2],  4);
+    hpel_funcs(put, [3],  2);
+    hpel_funcs(put_no_rnd, [0], 16);
+    hpel_funcs(put_no_rnd, [1],  8);
+    hpel_funcs(avg, [0], 16);
+    hpel_funcs(avg, [1],  8);
+    hpel_funcs(avg, [2],  4);
+    hpel_funcs(avg, [3],  2);
+    hpel_funcs(avg_no_rnd,, 16);
+}