2 * This file is part of FFmpeg.
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.
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.
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
19 #ifndef AVCODEC_MPEGAUDIODSP_H
20 #define AVCODEC_MPEGAUDIODSP_H
23 #include "libavutil/common.h"
25 typedef struct MPADSPContext
{
26 void (*apply_window_float
)(float *synth_buf
, float *window
,
27 int *dither_state
, float *samples
, int incr
);
28 void (*apply_window_fixed
)(int32_t *synth_buf
, int32_t *window
,
29 int *dither_state
, int16_t *samples
, int incr
);
30 void (*dct32_float
)(float *dst
, const float *src
);
31 void (*dct32_fixed
)(int *dst
, const int *src
);
33 void (*imdct36_blocks_float
)(float *out
, float *buf
, float *in
,
34 int count
, int switch_point
, int block_type
);
35 void (*imdct36_blocks_fixed
)(int *out
, int *buf
, int *in
,
36 int count
, int switch_point
, int block_type
);
39 void ff_mpadsp_init(MPADSPContext
*s
);
41 extern int32_t ff_mpa_synth_window_fixed
[];
42 extern float ff_mpa_synth_window_float
[];
44 extern const int32_t ff_mpa_enwindow
[257];
46 void ff_mpa_synth_filter_fixed(MPADSPContext
*s
,
47 int32_t *synth_buf_ptr
, int *synth_buf_offset
,
48 int32_t *window
, int *dither_state
,
49 int16_t *samples
, int incr
,
52 void ff_mpa_synth_filter_float(MPADSPContext
*s
,
53 float *synth_buf_ptr
, int *synth_buf_offset
,
54 float *window
, int *dither_state
,
55 float *samples
, int incr
,
58 void ff_mpadsp_init_aarch64(MPADSPContext
*s
);
59 void ff_mpadsp_init_arm(MPADSPContext
*s
);
60 void ff_mpadsp_init_ppc(MPADSPContext
*s
);
61 void ff_mpadsp_init_x86(MPADSPContext
*s
);
62 void ff_mpadsp_init_mipsfpu(MPADSPContext
*s
);
63 void ff_mpadsp_init_mipsdspr1(MPADSPContext
*s
);
65 void ff_mpa_synth_init_float(float *window
);
66 void ff_mpa_synth_init_fixed(int32_t *window
);
68 void ff_mpadsp_apply_window_float(float *synth_buf
, float *window
,
69 int *dither_state
, float *samples
,
71 void ff_mpadsp_apply_window_fixed(int32_t *synth_buf
, int32_t *window
,
72 int *dither_state
, int16_t *samples
,
75 void ff_imdct36_blocks_float(float *out
, float *buf
, float *in
,
76 int count
, int switch_point
, int block_type
);
78 void ff_imdct36_blocks_fixed(int *out
, int *buf
, int *in
,
79 int count
, int switch_point
, int block_type
);
81 void ff_init_mpadsp_tabs_float(void);
82 void ff_init_mpadsp_tabs_fixed(void);
84 /** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */
85 #define MDCT_BUF_SIZE FFALIGN(36, 2*4)
87 extern int ff_mdct_win_fixed
[8][MDCT_BUF_SIZE
];
88 extern float ff_mdct_win_float
[8][MDCT_BUF_SIZE
];
90 #endif /* AVCODEC_MPEGAUDIODSP_H */