1/* 2 * ARM optimized Format Conversion Utils 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include <stdint.h> 22 23#include "libavutil/attributes.h" 24#include "libavutil/arm/cpu.h" 25#include "libavcodec/avcodec.h" 26#include "libavcodec/fmtconvert.h" 27 28void ff_int32_to_float_fmul_scalar_neon(float *dst, const int32_t *src, 29 float mul, int len); 30 31void ff_int32_to_float_fmul_scalar_vfp(float *dst, const int32_t *src, 32 float mul, int len); 33void ff_int32_to_float_fmul_array8_vfp(FmtConvertContext *c, float *dst, 34 const int32_t *src, const float *mul, 35 int len); 36 37void ff_float_to_int16_neon(int16_t *dst, const float *src, long len); 38void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int); 39 40void ff_float_to_int16_vfp(int16_t *dst, const float *src, long len); 41 42av_cold void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx) 43{ 44 int cpu_flags = av_get_cpu_flags(); 45 46 if (have_vfp(cpu_flags)) { 47 if (!have_vfpv3(cpu_flags)) { 48 c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_vfp; 49 c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_vfp; 50 } 51 52 if (have_armv6(cpu_flags)) { 53 c->float_to_int16 = ff_float_to_int16_vfp; 54 } 55 } 56 57 if (have_neon(cpu_flags)) { 58 c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon; 59 60 if (!(avctx->flags & CODEC_FLAG_BITEXACT)) { 61 c->float_to_int16 = ff_float_to_int16_neon; 62 c->float_to_int16_interleave = ff_float_to_int16_interleave_neon; 63 } 64 } 65} 66