FFmpeg
mpegaudiodsp.h
Go to the documentation of this file.
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 
26 #include "libavutil/macros.h"
27 
28 typedef struct MPADSPContext {
29  void (*apply_window_float)(float *synth_buf, float *window,
30  int *dither_state, float *samples,
31  ptrdiff_t incr);
32  void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,
33  int *dither_state, int16_t *samples,
34  ptrdiff_t incr);
35  void (*dct32_float)(float *dst, const float *src);
36  void (*dct32_fixed)(int *dst, const int *src);
37 
38  void (*imdct36_blocks_float)(float *out, float *buf, float *in,
39  int count, int switch_point, int block_type);
40  void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,
41  int count, int switch_point, int block_type);
43 
46 
48 extern float ff_mpa_synth_window_float[];
49 
50 extern const int32_t ff_mpa_enwindow[257];
51 
53  int32_t *synth_buf_ptr, int *synth_buf_offset,
54  int32_t *window, int *dither_state,
55  int16_t *samples, ptrdiff_t incr,
56  int32_t *sb_samples);
57 
59  float *synth_buf_ptr, int *synth_buf_offset,
60  float *window, int *dither_state,
61  float *samples, ptrdiff_t incr,
62  float *sb_samples);
63 
68 void ff_mpadsp_init_x86_tabs(void);
71 
72 void ff_mpa_synth_init_float(void);
73 void ff_mpa_synth_init_fixed(void);
74 
75 void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
76  int *dither_state, float *samples,
77  ptrdiff_t incr);
79  int *dither_state, int16_t *samples,
80  ptrdiff_t incr);
81 
82 void ff_imdct36_blocks_float(float *out, float *buf, float *in,
83  int count, int switch_point, int block_type);
84 
85 void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,
86  int count, int switch_point, int block_type);
87 
88 /** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */
89 #define MDCT_BUF_SIZE FFALIGN(36, 2*4)
90 
91 extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];
92 extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];
94 
95 #endif /* AVCODEC_MPEGAUDIODSP_H */
FF_VISIBILITY_PUSH_HIDDEN
#define FF_VISIBILITY_PUSH_HIDDEN
Definition: attributes_internal.h:30
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:28
window
static SDL_Window * window
Definition: ffplay.c:364
ff_mpa_synth_window_fixed
int32_t ff_mpa_synth_window_fixed[]
macros.h
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:38
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:911
attributes_internal.h
ff_mpadsp_init_mipsfpu
void ff_mpadsp_init_mipsfpu(MPADSPContext *s)
Definition: mpegaudiodsp_mips_float.c:1249
s
#define s(width, name)
Definition: cbs_vp9.c:198
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)
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:35
FF_VISIBILITY_POP_HIDDEN
#define FF_VISIBILITY_POP_HIDDEN
Definition: attributes_internal.h:31
MPADSPContext::dct32_fixed
void(* dct32_fixed)(int *dst, const int *src)
Definition: mpegaudiodsp.h:36
ff_mpadsp_init_x86
void ff_mpadsp_init_x86(MPADSPContext *s)
Definition: mpegaudiodsp.c:259
ff_mpadsp_init
FF_VISIBILITY_PUSH_HIDDEN void ff_mpadsp_init(MPADSPContext *s)
Definition: mpegaudiodsp.c:81
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
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:89
ff_mpadsp_init_ppc
void ff_mpadsp_init_ppc(MPADSPContext *s)
Definition: mpegaudiodsp_altivec.c:136
ff_mpadsp_init_x86_tabs
void ff_mpadsp_init_x86_tabs(void)
Definition: mpegaudiodsp.c:242
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:32
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
MPADSPContext::apply_window_float
void(* apply_window_float)(float *synth_buf, float *window, int *dither_state, float *samples, ptrdiff_t incr)
Definition: mpegaudiodsp.h:29
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:40