/*

  * 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 <stdint.h>

 #include "libavutil/common.h"

 
 typedef struct MPADSPContext {
     void (*apply_window_float)(float *synth_buf, float *window,
                                int *dither_state, float *samples, int incr);
     void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,
                                int *dither_state, int16_t *samples, int 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;
 
 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, int 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, int 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_mipsfpu(MPADSPContext *s);
 void ff_mpadsp_init_mipsdspr1(MPADSPContext *s);

 
 void ff_mpa_synth_init_float(float *window);
 void ff_mpa_synth_init_fixed(int32_t *window);
 
 void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
                                   int *dither_state, float *samples,
                                   int incr);
 void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window,
                                   int *dither_state, int16_t *samples,
                                   int 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);
 
 void ff_init_mpadsp_tabs_float(void);
 void ff_init_mpadsp_tabs_fixed(void);
 

 /** 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];

 #endif /* AVCODEC_MPEGAUDIODSP_H */