blob: 3b33af61efe7e278cca7477d7aca87b73b45ad47
| 1 | /* |
| 2 | * Format Conversion Utils |
| 3 | * Copyright (c) 2000, 2001 Fabrice Bellard |
| 4 | * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include "avcodec.h" |
| 24 | #include "fmtconvert.h" |
| 25 | #include "libavutil/common.h" |
| 26 | |
| 27 | static void int32_to_float_fmul_scalar_c(float *dst, const int32_t *src, |
| 28 | float mul, int len) |
| 29 | { |
| 30 | int i; |
| 31 | for(i=0; i<len; i++) |
| 32 | dst[i] = src[i] * mul; |
| 33 | } |
| 34 | |
| 35 | static void int32_to_float_c(float *dst, const int32_t *src, intptr_t len) |
| 36 | { |
| 37 | int i; |
| 38 | |
| 39 | for (i = 0; i < len; i++) |
| 40 | dst[i] = (float)src[i]; |
| 41 | } |
| 42 | |
| 43 | static void int32_to_float_fmul_array8_c(FmtConvertContext *c, float *dst, |
| 44 | const int32_t *src, const float *mul, |
| 45 | int len) |
| 46 | { |
| 47 | int i; |
| 48 | for (i = 0; i < len; i += 8) |
| 49 | c->int32_to_float_fmul_scalar(&dst[i], &src[i], *mul++, 8); |
| 50 | } |
| 51 | |
| 52 | av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx) |
| 53 | { |
| 54 | c->int32_to_float = int32_to_float_c; |
| 55 | c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c; |
| 56 | c->int32_to_float_fmul_array8 = int32_to_float_fmul_array8_c; |
| 57 | |
| 58 | if (ARCH_AARCH64) |
| 59 | ff_fmt_convert_init_aarch64(c, avctx); |
| 60 | if (ARCH_ARM) |
| 61 | ff_fmt_convert_init_arm(c, avctx); |
| 62 | if (ARCH_PPC) |
| 63 | ff_fmt_convert_init_ppc(c, avctx); |
| 64 | if (ARCH_X86) |
| 65 | ff_fmt_convert_init_x86(c, avctx); |
| 66 | if (HAVE_MIPSFPU) |
| 67 | ff_fmt_convert_init_mips(c); |
| 68 | } |
| 69 |