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686959e87e
* qatar/master: doxygen: Consistently use '@' instead of '\' for Doxygen markup. Use av_printf_format to check the usage of printf style functions Add av_printf_format, for marking printf style format strings and their parameters ARM: enable thumb for Cortex-M* CPUs nsvdec: Propagate error values instead of returning 0 in nsv_read_header(). build: remove SRC_PATH_BARE variable build: move basic rules and variables to main Makefile build: move special targets to end of main Makefile lavdev: improve feedback in case of invalid frame rate/size vfwcap: prefer "framerate_q" over "fps" in vfw_read_header() v4l2: prefer "framerate_q" over "fps" in v4l2_set_parameters() fbdev: prefer "framerate_q" over "fps" in device context bktr: prefer "framerate" over "fps" for grab_read_header() ALSA: implement channel layout for playback. alsa: support unsigned variants of already supported signed formats. alsa: add support for more formats. ARM: allow building in Thumb2 mode Conflicts: common.mak doc/APIchanges libavcodec/vdpau.h libavdevice/alsa-audio-common.c libavdevice/fbdev.c libavdevice/libdc1394.c libavutil/avutil.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* simple math operations
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* Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_ARM_MATHOPS_H
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#define AVCODEC_ARM_MATHOPS_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/common.h"
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#if HAVE_INLINE_ASM
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#if HAVE_ARMV6
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#define MULH MULH
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static inline av_const int MULH(int a, int b)
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{
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int r;
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__asm__ ("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
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return r;
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}
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#endif
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#define MLS64(d, a, b) MAC64(d, -(a), b)
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#if HAVE_ARMV5TE
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/* signed 16x16 -> 32 multiply add accumulate */
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# define MAC16(rt, ra, rb) \
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__asm__ ("smlabb %0, %1, %2, %0" : "+r"(rt) : "r"(ra), "r"(rb));
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/* signed 16x16 -> 32 multiply */
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# define MUL16 MUL16
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static inline av_const int MUL16(int ra, int rb)
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{
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int rt;
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__asm__ ("smulbb %0, %1, %2" : "=r"(rt) : "r"(ra), "r"(rb));
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return rt;
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}
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#endif
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#define mid_pred mid_pred
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static inline av_const int mid_pred(int a, int b, int c)
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{
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int m;
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__asm__ (
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"mov %0, %2 \n\t"
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"cmp %1, %2 \n\t"
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"itt gt \n\t"
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"movgt %0, %1 \n\t"
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"movgt %1, %2 \n\t"
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"cmp %1, %3 \n\t"
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"it le \n\t"
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"movle %1, %3 \n\t"
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"cmp %0, %1 \n\t"
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"it gt \n\t"
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"movgt %0, %1 \n\t"
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: "=&r"(m), "+r"(a)
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: "r"(b), "r"(c)
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: "cc");
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return m;
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}
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#endif /* HAVE_INLINE_ASM */
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#endif /* AVCODEC_ARM_MATHOPS_H */
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