| /* |
| * 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 */ |