| /* |
| * 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 |