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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 <stdint.h> | |
23 | #include "libavutil/common.h" | |
24 | ||
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); | |
32 | ||
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); | |
37 | } MPADSPContext; | |
38 | ||
39 | void ff_mpadsp_init(MPADSPContext *s); | |
40 | ||
41 | extern int32_t ff_mpa_synth_window_fixed[]; | |
42 | extern float ff_mpa_synth_window_float[]; | |
43 | ||
44 | extern const int32_t ff_mpa_enwindow[257]; | |
45 | ||
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, | |
50 | int32_t *sb_samples); | |
51 | ||
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, | |
56 | float *sb_samples); | |
57 | ||
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); | |
64 | ||
65 | void ff_mpa_synth_init_float(float *window); | |
66 | void ff_mpa_synth_init_fixed(int32_t *window); | |
67 | ||
68 | void ff_mpadsp_apply_window_float(float *synth_buf, float *window, | |
69 | int *dither_state, float *samples, | |
70 | int incr); | |
71 | void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, | |
72 | int *dither_state, int16_t *samples, | |
73 | int incr); | |
74 | ||
75 | void ff_imdct36_blocks_float(float *out, float *buf, float *in, | |
76 | int count, int switch_point, int block_type); | |
77 | ||
78 | void ff_imdct36_blocks_fixed(int *out, int *buf, int *in, | |
79 | int count, int switch_point, int block_type); | |
80 | ||
81 | void ff_init_mpadsp_tabs_float(void); | |
82 | void ff_init_mpadsp_tabs_fixed(void); | |
83 | ||
84 | /** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */ | |
85 | #define MDCT_BUF_SIZE FFALIGN(36, 2*4) | |
86 | ||
87 | extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE]; | |
88 | extern float ff_mdct_win_float[8][MDCT_BUF_SIZE]; | |
89 | ||
90 | #endif /* AVCODEC_MPEGAUDIODSP_H */ |