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author | Diego 'Flameeyes' Pettenò <flameeyes@gmail.com> | 2006-12-02 01:19:48 +0000 |
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committer | Diego 'Flameeyes' Pettenò <flameeyes@gmail.com> | 2006-12-02 01:19:48 +0000 |
commit | 0ea721f7ce81357bc4ec6eea609cd50482c3d15b (patch) | |
tree | 25a0871cb3c06f9716acf9c204192d548f214048 /contrib/ffmpeg/libavcodec/armv4l/mathops.h | |
parent | d8ec380876e7f697ba609546d61757ab3f2d8715 (diff) | |
download | xine-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.h | 49 |
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 |