/* * 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 AVUTIL_HALF2FLOAT_H#define AVUTIL_HALF2FLOAT_H#include <stdint.h>#include "intfloat.h"#include "config.h"typedef struct Half2FloatTables {#if HAVE_FAST_FLOAT16 uint8_t dummy;#else uint32_t mantissatable[3072]; uint32_t exponenttable[64]; uint16_t offsettable[64];#endif} Half2FloatTables;void ff_init_half2float_tables(Half2FloatTables *t);static inline uint32_t half2float(uint16_t h, const Half2FloatTables *t){#if HAVE_FAST_FLOAT16 union { _Float16 f; uint16_t i; } u; u.i = h; return av_float2int(u.f);#else uint32_t f; f = t->mantissatable[t->offsettable[h >> 10] + (h & 0x3ff)] + t->exponenttable[h >> 10]; return f;#endif}#endif /* AVUTIL_HALF2FLOAT_H */
/*
* 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 AVUTIL_HALF2FLOAT_H
#define AVUTIL_HALF2FLOAT_H
#include <stdint.h>
#include "intfloat.h"
#include "config.h"
typedef struct Half2FloatTables {
#if HAVE_FAST_FLOAT16
uint8_t dummy;
#else
uint32_t mantissatable[3072];
uint32_t exponenttable[64];
uint16_t offsettable[64];
#endif
} Half2FloatTables;
void ff_init_half2float_tables(Half2FloatTables *t);
static inline uint32_t half2float(uint16_t h, const Half2FloatTables *t)
{
#if HAVE_FAST_FLOAT16
union {
_Float16 f;
uint16_t i;
} u;
u.i = h;
return av_float2int(u.f);
#else
uint32_t f;
f = t->mantissatable[t->offsettable[h >> 10] + (h & 0x3ff)] + t->exponenttable[h >> 10];
return f;
#endif
}
#endif /* AVUTIL_HALF2FLOAT_H */