FFmpeg
mpegaudiodsp.h
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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 <stddef.h>
23 #include <stdint.h>
24 
25 #include "libavutil/common.h"
26 
27 typedef 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);
42 
44 
46 extern float ff_mpa_synth_window_float[];
47 
48 extern const int32_t ff_mpa_enwindow[257];
49 
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 
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 
66 void ff_mpadsp_init_x86_tabs(void);
69 
70 void ff_mpa_synth_init_float(void);
71 void ff_mpa_synth_init_fixed(void);
72 
73 void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
74  int *dither_state, float *samples,
75  ptrdiff_t incr);
77  int *dither_state, int16_t *samples,
78  ptrdiff_t incr);
79 
80 void ff_imdct36_blocks_float(float *out, float *buf, float *in,
81  int count, int switch_point, int block_type);
82 
83 void 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 
89 extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];
90 extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];
91 
92 #endif /* AVCODEC_MPEGAUDIODSP_H */
out
FILE * out
Definition: movenc.c:54
ff_mdct_win_fixed
int ff_mdct_win_fixed[8][MDCT_BUF_SIZE]
ff_imdct36_blocks_float
void ff_imdct36_blocks_float(float *out, float *buf, float *in, int count, int switch_point, int block_type)
MPADSPContext
Definition: mpegaudiodsp.h:27
window
static SDL_Window * window
Definition: ffplay.c:366
ff_mpa_synth_window_fixed
int32_t ff_mpa_synth_window_fixed[]
ff_mpa_synth_window_float
float ff_mpa_synth_window_float[]
MPADSPContext::imdct36_blocks_float
void(* imdct36_blocks_float)(float *out, float *buf, float *in, int count, int switch_point, int block_type)
Definition: mpegaudiodsp.h:37
ff_mpadsp_apply_window_float
void ff_mpadsp_apply_window_float(float *synth_buf, float *window, int *dither_state, float *samples, ptrdiff_t incr)
ff_mpadsp_init_mipsdsp
void ff_mpadsp_init_mipsdsp(MPADSPContext *s)
Definition: mpegaudiodsp_mips_fixed.c:910
ff_mpadsp_init_mipsfpu
void ff_mpadsp_init_mipsfpu(MPADSPContext *s)
Definition: mpegaudiodsp_mips_float.c:1248
s
#define s(width, name)
Definition: cbs_vp9.c:257
ff_imdct36_blocks_fixed
void ff_imdct36_blocks_fixed(int *out, int *buf, int *in, int count, int switch_point, int block_type)
ff_mpa_synth_filter_fixed
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)
ff_mpa_synth_init_fixed
void ff_mpa_synth_init_fixed(void)
src
#define src
Definition: vp8dsp.c:255
ff_mpa_enwindow
const int32_t ff_mpa_enwindow[257]
Definition: mpegaudiodsp_data.c:22
ff_mpadsp_apply_window_fixed
void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, ptrdiff_t incr)
ff_mpadsp_init_arm
void ff_mpadsp_init_arm(MPADSPContext *s)
Definition: mpegaudiodsp_init_arm.c:31
MPADSPContext::dct32_float
void(* dct32_float)(float *dst, const float *src)
Definition: mpegaudiodsp.h:34
MPADSPContext::dct32_fixed
void(* dct32_fixed)(int *dst, const int *src)
Definition: mpegaudiodsp.h:35
ff_mpadsp_init_x86
void ff_mpadsp_init_x86(MPADSPContext *s)
Definition: mpegaudiodsp.c:260
common.h
ff_mpa_synth_init_float
void ff_mpa_synth_init_float(void)
ff_mpadsp_init_aarch64
void ff_mpadsp_init_aarch64(MPADSPContext *s)
Definition: mpegaudiodsp_init.c:32
ff_mpadsp_init
void ff_mpadsp_init(MPADSPContext *s)
Definition: mpegaudiodsp.c:81
samples
Filter the word “frame” indicates either a video frame or a group of audio samples
Definition: filter_design.txt:8
ff_mpa_synth_filter_float
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)
MDCT_BUF_SIZE
#define MDCT_BUF_SIZE
For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned.
Definition: mpegaudiodsp.h:87
ff_mpadsp_init_ppc
void ff_mpadsp_init_ppc(MPADSPContext *s)
Definition: mpegaudiodsp_altivec.c:134
ff_mpadsp_init_x86_tabs
void ff_mpadsp_init_x86_tabs(void)
Definition: mpegaudiodsp.c:243
MPADSPContext::apply_window_fixed
void(* apply_window_fixed)(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, ptrdiff_t incr)
Definition: mpegaudiodsp.h:31
MPADSPContext::apply_window_float
void(* apply_window_float)(float *synth_buf, float *window, int *dither_state, float *samples, ptrdiff_t incr)
Definition: mpegaudiodsp.h:28
ff_mdct_win_float
float ff_mdct_win_float[8][MDCT_BUF_SIZE]
int32_t
int32_t
Definition: audioconvert.c:56
MPADSPContext::imdct36_blocks_fixed
void(* imdct36_blocks_fixed)(int *out, int *buf, int *in, int count, int switch_point, int block_type)
Definition: mpegaudiodsp.h:39