mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
b8a43bc1b5
* qatar/master: (27 commits) ac3enc: fix LOCAL_ALIGNED usage in count_mantissa_bits() ac3dsp: do not use the ff_* prefix when referencing ff_ac3_bap_bits. ac3dsp: fix loop condition in ac3_update_bap_counts_c() ARM: unbreak build ac3enc: modify mantissa bit counting to keep bap counts for all values of bap instead of just 0 to 4. ac3enc: split mantissa bit counting into a separate function. ac3enc: store per-block/channel bap pointers by reference block in a 2D array rather than in the AC3Block struct. get_bits: add av_unused tag to cache variable sws: replace all long with int. ARM: aacdec: fix constraints on inline asm ARM: remove unnecessary volatile from inline asm ARM: add "cc" clobbers to inline asm where needed ARM: improve FASTDIV asm ac3enc: use LOCAL_ALIGNED macro APIchanges: fill in git hash for av_get_pix_fmt_name (0420bd7). lavu: add av_get_pix_fmt_name() convenience function cmdutils: remove OPT_FUNC2 swscale: fix crash in bilinear scaling. vpxenc: add VP8E_SET_STATIC_THRESHOLD mapping webm: support stereo videos in matroska/webm muxer ... Conflicts: Changelog cmdutils.c cmdutils.h doc/APIchanges doc/muxers.texi ffmpeg.c ffplay.c libavcodec/ac3enc.c libavcodec/ac3enc_float.c libavcodec/avcodec.h libavcodec/get_bits.h libavcodec/libvpxenc.c libavcodec/version.h libavdevice/libdc1394.c libavformat/matroskaenc.c libavutil/avutil.h libswscale/rgb2rgb.c libswscale/swscale.c libswscale/swscale_template.c libswscale/x86/swscale_template.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVCODEC_ARM_MATHOPS_H
|
|
#define AVCODEC_ARM_MATHOPS_H
|
|
|
|
#include <stdint.h>
|
|
#include "config.h"
|
|
#include "libavutil/common.h"
|
|
|
|
#if HAVE_INLINE_ASM
|
|
|
|
# define MULL MULL
|
|
static inline av_const int MULL(int a, int b, unsigned shift)
|
|
{
|
|
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), "ir"(shift), "ir"(32-shift));
|
|
return hi;
|
|
}
|
|
|
|
#define MULH MULH
|
|
#if HAVE_ARMV6
|
|
static inline av_const int MULH(int a, int b)
|
|
{
|
|
int r;
|
|
__asm__ ("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
|
|
return r;
|
|
}
|
|
#else
|
|
static inline av_const int MULH(int a, int b)
|
|
{
|
|
int lo, hi;
|
|
__asm__ ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));
|
|
return hi;
|
|
}
|
|
#endif
|
|
|
|
static inline av_const int64_t MUL64(int a, int b)
|
|
{
|
|
union { uint64_t x; unsigned hl[2]; } x;
|
|
__asm__ ("smull %0, %1, %2, %3"
|
|
: "=r"(x.hl[0]), "=r"(x.hl[1]) : "r"(a), "r"(b));
|
|
return x.x;
|
|
}
|
|
#define MUL64 MUL64
|
|
|
|
static inline av_const int64_t MAC64(int64_t d, int a, int b)
|
|
{
|
|
union { uint64_t x; unsigned hl[2]; } x = { d };
|
|
__asm__ ("smlal %0, %1, %2, %3"
|
|
: "+r"(x.hl[0]), "+r"(x.hl[1]) : "r"(a), "r"(b));
|
|
return x.x;
|
|
}
|
|
#define MAC64(d, a, b) ((d) = MAC64(d, a, b))
|
|
#define MLS64(d, a, b) MAC64(d, -(a), b)
|
|
|
|
#if HAVE_ARMV5TE
|
|
|
|
/* signed 16x16 -> 32 multiply add accumulate */
|
|
# define MAC16(rt, ra, rb) \
|
|
__asm__ ("smlabb %0, %1, %2, %0" : "+r"(rt) : "r"(ra), "r"(rb));
|
|
|
|
/* signed 16x16 -> 32 multiply */
|
|
# define MUL16 MUL16
|
|
static inline av_const int MUL16(int ra, int rb)
|
|
{
|
|
int rt;
|
|
__asm__ ("smulbb %0, %1, %2" : "=r"(rt) : "r"(ra), "r"(rb));
|
|
return rt;
|
|
}
|
|
|
|
#endif
|
|
|
|
#define mid_pred mid_pred
|
|
static inline av_const int mid_pred(int a, int b, int c)
|
|
{
|
|
int m;
|
|
__asm__ (
|
|
"mov %0, %2 \n\t"
|
|
"cmp %1, %2 \n\t"
|
|
"movgt %0, %1 \n\t"
|
|
"movgt %1, %2 \n\t"
|
|
"cmp %1, %3 \n\t"
|
|
"movle %1, %3 \n\t"
|
|
"cmp %0, %1 \n\t"
|
|
"movgt %0, %1 \n\t"
|
|
: "=&r"(m), "+r"(a)
|
|
: "r"(b), "r"(c)
|
|
: "cc");
|
|
return m;
|
|
}
|
|
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
#endif /* AVCODEC_ARM_MATHOPS_H */
|