1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#ifndef AVCODEC_MPEGAUDIODSP_H
20#define AVCODEC_MPEGAUDIODSP_H
21
22#include <stddef.h>
23#include <stdint.h>
24
25#include "libavutil/macros.h"
26
27typedef struct MPADSPContext {
28    void (*apply_window_float)(float *synth_buf, float *window,
29                               int *dither_state, float *samples,
30                               ptrdiff_t incr);
31    void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,
32                               int *dither_state, int16_t *samples,
33                               ptrdiff_t incr);
34    void (*dct32_float)(float *dst, const float *src);
35    void (*dct32_fixed)(int *dst, const int *src);
36
37    void (*imdct36_blocks_float)(float *out, float *buf, float *in,
38                                 int count, int switch_point, int block_type);
39    void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,
40                                 int count, int switch_point, int block_type);
41} MPADSPContext;
42
43void ff_mpadsp_init(MPADSPContext *s);
44
45extern int32_t ff_mpa_synth_window_fixed[];
46extern float   ff_mpa_synth_window_float[];
47
48extern const int32_t ff_mpa_enwindow[257];
49
50void ff_mpa_synth_filter_fixed(MPADSPContext *s,
51                               int32_t *synth_buf_ptr, int *synth_buf_offset,
52                               int32_t *window, int *dither_state,
53                               int16_t *samples, ptrdiff_t incr,
54                               int32_t *sb_samples);
55
56void ff_mpa_synth_filter_float(MPADSPContext *s,
57                               float *synth_buf_ptr, int *synth_buf_offset,
58                               float *window, int *dither_state,
59                               float *samples, ptrdiff_t incr,
60                               float *sb_samples);
61
62void ff_mpadsp_init_aarch64(MPADSPContext *s);
63void ff_mpadsp_init_arm(MPADSPContext *s);
64void ff_mpadsp_init_ppc(MPADSPContext *s);
65void ff_mpadsp_init_x86(MPADSPContext *s);
66void ff_mpadsp_init_x86_tabs(void);
67void ff_mpadsp_init_mipsfpu(MPADSPContext *s);
68void ff_mpadsp_init_mipsdsp(MPADSPContext *s);
69
70void ff_mpa_synth_init_float(void);
71void ff_mpa_synth_init_fixed(void);
72
73void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
74                                  int *dither_state, float *samples,
75                                  ptrdiff_t incr);
76void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window,
77                                  int *dither_state, int16_t *samples,
78                                  ptrdiff_t incr);
79
80void ff_imdct36_blocks_float(float *out, float *buf, float *in,
81                             int count, int switch_point, int block_type);
82
83void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,
84                             int count, int switch_point, int block_type);
85
86/** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */
87#define MDCT_BUF_SIZE FFALIGN(36, 2*4)
88
89extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];
90extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];
91
92#endif /* AVCODEC_MPEGAUDIODSP_H */
93