yading@10: /*
yading@10:  * ARM optimized Format Conversion Utils
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include <stdint.h>
yading@10: 
yading@10: #include "libavutil/attributes.h"
yading@10: #include "libavutil/arm/cpu.h"
yading@10: #include "libavcodec/avcodec.h"
yading@10: #include "libavcodec/fmtconvert.h"
yading@10: 
yading@10: void ff_int32_to_float_fmul_scalar_neon(float *dst, const int *src,
yading@10:                                         float mul, int len);
yading@10: 
yading@10: void ff_float_to_int16_neon(int16_t *dst, const float *src, long len);
yading@10: void ff_float_to_int16_interleave_neon(int16_t *, const float **, long, int);
yading@10: 
yading@10: void ff_float_to_int16_vfp(int16_t *dst, const float *src, long len);
yading@10: 
yading@10: av_cold void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx)
yading@10: {
yading@10:     int cpu_flags = av_get_cpu_flags();
yading@10: 
yading@10:     if (have_vfp(cpu_flags) && have_armv6(cpu_flags)) {
yading@10:         c->float_to_int16 = ff_float_to_int16_vfp;
yading@10:     }
yading@10: 
yading@10:     if (have_neon(cpu_flags)) {
yading@10:         c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon;
yading@10: 
yading@10:         if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
yading@10:             c->float_to_int16            = ff_float_to_int16_neon;
yading@10:             c->float_to_int16_interleave = ff_float_to_int16_interleave_neon;
yading@10:         }
yading@10:     }
yading@10: }