mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-23 15:53:08 +00:00
avutil: add ff_reverse as av_reverse replacement
The table is used in libavutil/eval.c. Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun
parent
9c29aa7143
commit
107e54c5bf
@ -106,7 +106,7 @@ OBJS-$(CONFIG_RANGECODER) += rangecoder.o
|
||||
RDFT-OBJS-$(CONFIG_HARDCODED_TABLES) += sin_tables.o
|
||||
OBJS-$(CONFIG_RDFT) += rdft.o $(RDFT-OBJS-yes)
|
||||
OBJS-$(CONFIG_RV34DSP) += rv34dsp.o
|
||||
OBJS-$(CONFIG_SHARED) += log2_tab.o
|
||||
OBJS-$(CONFIG_SHARED) += log2_tab.o reverse.o
|
||||
OBJS-$(CONFIG_SINEWIN) += sinewin.o sinewin_fixed.o
|
||||
OBJS-$(CONFIG_SNAPPY) += snappy.o
|
||||
OBJS-$(CONFIG_STARTCODE) += startcode.o
|
||||
|
||||
@ -30,7 +30,6 @@
|
||||
#define MAX_NEG_CROP 1024
|
||||
|
||||
extern const uint32_t ff_inverse[257];
|
||||
extern const uint8_t ff_reverse[256];
|
||||
extern const uint8_t ff_sqrt_tab[256];
|
||||
extern const uint8_t ff_crop_tab[256 + 2 * MAX_NEG_CROP];
|
||||
extern const uint8_t ff_zigzag_direct[64];
|
||||
|
||||
@ -71,25 +71,6 @@ const uint8_t ff_sqrt_tab[256]={
|
||||
240,240,241,242,242,243,243,244,244,245,245,246,246,247,247,248,248,249,249,250,250,251,251,252,252,253,253,254,254,255,255,255
|
||||
};
|
||||
|
||||
const uint8_t ff_reverse[256] = {
|
||||
0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
|
||||
0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
|
||||
0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
|
||||
0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
|
||||
0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
|
||||
0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
|
||||
0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
|
||||
0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
|
||||
0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
|
||||
0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
|
||||
0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
|
||||
0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
|
||||
0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
|
||||
0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
|
||||
0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
|
||||
0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
|
||||
};
|
||||
|
||||
#define times4(x) x, x, x, x
|
||||
#define times256(x) times4(times4(times4(times4(times4(x)))))
|
||||
|
||||
|
||||
1
libavcodec/reverse.c
Normal file
1
libavcodec/reverse.c
Normal file
@ -0,0 +1 @@
|
||||
#include "libavutil/reverse.c"
|
||||
@ -121,6 +121,7 @@ OBJS = adler32.o \
|
||||
pixelutils.o \
|
||||
random_seed.o \
|
||||
rational.o \
|
||||
reverse.o \
|
||||
rc4.o \
|
||||
ripemd.o \
|
||||
samplefmt.o \
|
||||
|
||||
@ -31,6 +31,7 @@
|
||||
#include "avutil.h"
|
||||
#include "common.h"
|
||||
#include "eval.h"
|
||||
#include "internal.h"
|
||||
#include "log.h"
|
||||
#include "mathematics.h"
|
||||
#include "time.h"
|
||||
@ -244,7 +245,7 @@ static double eval_expr(Parser *p, AVExpr *e)
|
||||
double x_max = eval_expr(p, e->param[1]);
|
||||
for(i=-1; i<1024; i++) {
|
||||
if(i<255) {
|
||||
p->var[0] = av_reverse[i&255]*x_max/255;
|
||||
p->var[0] = ff_reverse[i&255]*x_max/255;
|
||||
} else {
|
||||
p->var[0] = x_max*pow(0.9, i-255);
|
||||
if (i&1) p->var[0] *= -1;
|
||||
|
||||
@ -276,4 +276,6 @@ uint64_t ff_get_channel_layout(const char *name, int compat);
|
||||
|
||||
void ff_check_pixfmt_descriptors(void);
|
||||
|
||||
extern const uint8_t ff_reverse[256];
|
||||
|
||||
#endif /* AVUTIL_INTERNAL_H */
|
||||
|
||||
40
libavutil/reverse.c
Normal file
40
libavutil/reverse.c
Normal file
@ -0,0 +1,40 @@
|
||||
/*
|
||||
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
|
||||
*
|
||||
* 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
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
const uint8_t ff_reverse[256] = {
|
||||
0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
|
||||
0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
|
||||
0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
|
||||
0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
|
||||
0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
|
||||
0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
|
||||
0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
|
||||
0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
|
||||
0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
|
||||
0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
|
||||
0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
|
||||
0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
|
||||
0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
|
||||
0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
|
||||
0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
|
||||
0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user