| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #ifndef AVUTIL_HALF2FLOAT_H | ||
| 20 | #define AVUTIL_HALF2FLOAT_H | ||
| 21 | |||
| 22 | #include <stdint.h> | ||
| 23 | #include "intfloat.h" | ||
| 24 | |||
| 25 | #include "config.h" | ||
| 26 | |||
| 27 | typedef struct Half2FloatTables { | ||
| 28 | #if HAVE_FAST_FLOAT16 | ||
| 29 | uint8_t dummy; | ||
| 30 | #else | ||
| 31 | uint32_t mantissatable[3072]; | ||
| 32 | uint32_t exponenttable[64]; | ||
| 33 | uint16_t offsettable[64]; | ||
| 34 | #endif | ||
| 35 | } Half2FloatTables; | ||
| 36 | |||
| 37 | void ff_init_half2float_tables(Half2FloatTables *t); | ||
| 38 | |||
| 39 | 23087070 | static inline uint32_t half2float(uint16_t h, const Half2FloatTables *t) | |
| 40 | { | ||
| 41 | #if HAVE_FAST_FLOAT16 | ||
| 42 | union { | ||
| 43 | _Float16 f; | ||
| 44 | uint16_t i; | ||
| 45 | } u; | ||
| 46 | u.i = h; | ||
| 47 | return av_float2int(u.f); | ||
| 48 | #else | ||
| 49 | uint32_t f; | ||
| 50 | |||
| 51 | 23087070 | f = t->mantissatable[t->offsettable[h >> 10] + (h & 0x3ff)] + t->exponenttable[h >> 10]; | |
| 52 | |||
| 53 | 23087070 | return f; | |
| 54 | #endif | ||
| 55 | } | ||
| 56 | |||
| 57 | #endif /* AVUTIL_HALF2FLOAT_H */ | ||
| 58 |