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authorDiego 'Flameeyes' Pettenò <flameeyes@gmail.com>2006-12-02 01:19:48 +0000
committerDiego 'Flameeyes' Pettenò <flameeyes@gmail.com>2006-12-02 01:19:48 +0000
commit0ea721f7ce81357bc4ec6eea609cd50482c3d15b (patch)
tree25a0871cb3c06f9716acf9c204192d548f214048 /contrib/ffmpeg/libavcodec/armv4l/mathops.h
parentd8ec380876e7f697ba609546d61757ab3f2d8715 (diff)
downloadxine-lib-0ea721f7ce81357bc4ec6eea609cd50482c3d15b.tar.gz
xine-lib-0ea721f7ce81357bc4ec6eea609cd50482c3d15b.tar.bz2
Start working on a branch where FFmpeg is not copied, patched and carved to be built with automake but instead imported inline and built using its own build system. This is an import of a slightly modified FFmpeg current tree. xine-lib builds, install and run fine with it, but there are of course plenty of things that needs to be fixed before it can even be considered for a 1.2.x series. Work will continue in the next days of course.
CVS patchset: 8397 CVS date: 2006/12/02 01:19:48
Diffstat (limited to 'contrib/ffmpeg/libavcodec/armv4l/mathops.h')
-rw-r--r--contrib/ffmpeg/libavcodec/armv4l/mathops.h49
1 files changed, 49 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/armv4l/mathops.h b/contrib/ffmpeg/libavcodec/armv4l/mathops.h
new file mode 100644
index 000000000..7ddd0ec6e
--- /dev/null
+++ b/contrib/ffmpeg/libavcodec/armv4l/mathops.h
@@ -0,0 +1,49 @@
+/*
+ * simple math operations
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
+ *
+ * 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
+ */
+
+#ifdef FRAC_BITS
+# define MULL(a, b) \
+ ({ int lo, hi;\
+ asm("smull %0, %1, %2, %3 \n\t"\
+ "mov %0, %0, lsr %4\n\t"\
+ "add %1, %0, %1, lsl %5\n\t"\
+ : "=&r"(lo), "=&r"(hi)\
+ : "r"(b), "r"(a), "i"(FRAC_BITS), "i"(32-FRAC_BITS));\
+ hi; })
+#endif
+
+#define MULH(a, b) \
+ ({ int lo, hi;\
+ asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));\
+ hi; })
+
+#if defined(HAVE_ARMV5TE)
+
+/* signed 16x16 -> 32 multiply add accumulate */
+# define MAC16(rt, ra, rb) \
+ asm ("smlabb %0, %2, %3, %0" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
+/* signed 16x16 -> 32 multiply */
+# define MUL16(ra, rb) \
+ ({ int __rt; \
+ asm ("smulbb %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); \
+ __rt; })
+
+#endif