/*
* 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_MPEGAUDIODSP_H
#define AVCODEC_MPEGAUDIODSP_H
#include <stddef.h>
#include <stdint.h>
#include "libavutil/attributes_internal.h"
#include "libavutil/macros.h"
typedef struct MPADSPContext {
void (*apply_window_float)(float *synth_buf, float *window,
int *dither_state, float *samples,
ptrdiff_t incr);
void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,
int *dither_state, int16_t *samples,
ptrdiff_t incr);
void (*dct32_float)(float *dst, const float *src);
void (*dct32_fixed)(int *dst, const int *src);
void (*imdct36_blocks_float)(float *out, float *buf, float *in,
int count, int switch_point, int block_type);
void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,
int count, int switch_point, int block_type);
} MPADSPContext;
FF_VISIBILITY_PUSH_HIDDEN
void ff_mpadsp_init(MPADSPContext *s);
extern int32_t ff_mpa_synth_window_fixed[];
extern float ff_mpa_synth_window_float[];
extern const int32_t ff_mpa_enwindow[257 ];
void ff_mpa_synth_filter_fixed(MPADSPContext *s,
int32_t *synth_buf_ptr, int *synth_buf_offset,
int32_t *window, int *dither_state,
int16_t *samples, ptrdiff_t incr,
int32_t *sb_samples);
void ff_mpa_synth_filter_float(MPADSPContext *s,
float *synth_buf_ptr, int *synth_buf_offset,
float *window, int *dither_state,
float *samples, ptrdiff_t incr,
float *sb_samples);
void ff_mpadsp_init_aarch64(MPADSPContext *s);
void ff_mpadsp_init_arm(MPADSPContext *s);
void ff_mpadsp_init_ppc(MPADSPContext *s);
void ff_mpadsp_init_x86(MPADSPContext *s);
void ff_mpadsp_init_x86_tabs(void );
void ff_mpadsp_init_mipsfpu(MPADSPContext *s);
void ff_mpadsp_init_mipsdsp(MPADSPContext *s);
void ff_mpa_synth_init_float(void );
void ff_mpa_synth_init_fixed(void );
void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
int *dither_state, float *samples,
ptrdiff_t incr);
void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window,
int *dither_state, int16_t *samples,
ptrdiff_t incr);
void ff_imdct36_blocks_float(float *out, float *buf, float *in,
int count, int switch_point, int block_type);
void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,
int count, int switch_point, int block_type);
/** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */
#define MDCT_BUF_SIZE FFALIGN(36 , 2 *4 )
extern int ff_mdct_win_fixed[8 ][MDCT_BUF_SIZE];
extern float ff_mdct_win_float[8 ][MDCT_BUF_SIZE];
FF_VISIBILITY_POP_HIDDEN
#endif /* AVCODEC_MPEGAUDIODSP_H */
Messung V0.5 in Prozent C=97 H=100 G=98
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-08-24)
¤
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