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/*
* 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 AVCODEC_AACENCDSP_H
#define AVCODEC_AACENCDSP_H
#include <math.h>
#include "config.h"
#include "libavutil/macros.h"
typedef struct AACEncDSPContext {
void (*abs_pow34)(float *out, const float *in, const int size);
void (*quant_bands)(int *out, const float *in, const float *scaled,
int size, int is_signed, int maxval, const float Q34,
const float rounding);
} AACEncDSPContext;
void ff_aacenc_dsp_init_riscv(AACEncDSPContext *s);
void ff_aacenc_dsp_init_x86(AACEncDSPContext *s);
static inline void abs_pow34_v(float *out, const float *in, const int size)
{
for (int i = 0; i < size; i++) {
float a = fabsf(in[i]);
out[i] = sqrtf(a * sqrtf(a));
}
}
static inline void quantize_bands(int *out, const float *in, const float *scaled,
int size, int is_signed, int maxval, const float Q34,
const float rounding)
{
for (int i = 0; i < size; i++) {
float qc = scaled[i] * Q34;
int tmp = (int)FFMIN(qc + rounding, (float)maxval);
if (is_signed && in[i] < 0.0f) {
tmp = -tmp;
}
out[i] = tmp;
}
}
static inline void ff_aacenc_dsp_init(AACEncDSPContext *s)
{
s->abs_pow34 = abs_pow34_v;
s->quant_bands = quantize_bands;
#if ARCH_RISCV
ff_aacenc_dsp_init_riscv(s);
#elif ARCH_X86
ff_aacenc_dsp_init_x86(s);
#endif
}
#endif
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