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00019 #ifndef AVCODEC_MPEGAUDIODSP_H
00020 #define AVCODEC_MPEGAUDIODSP_H
00021
00022 #include <stdint.h>
00023 #include "libavutil/common.h"
00024
00025 typedef struct MPADSPContext {
00026 void (*apply_window_float)(float *synth_buf, float *window,
00027 int *dither_state, float *samples, int incr);
00028 void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,
00029 int *dither_state, int16_t *samples, int incr);
00030 void (*dct32_float)(float *dst, const float *src);
00031 void (*dct32_fixed)(int *dst, const int *src);
00032 void (*imdct36_blocks_float)(float *out, float *buf, float *in,
00033 int count, int switch_point, int block_type);
00034 void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,
00035 int count, int switch_point, int block_type);
00036 } MPADSPContext;
00037
00038 void ff_mpadsp_init(MPADSPContext *s);
00039
00040 extern int32_t ff_mpa_synth_window_fixed[];
00041 extern float ff_mpa_synth_window_float[];
00042
00043 void ff_mpa_synth_filter_fixed(MPADSPContext *s,
00044 int32_t *synth_buf_ptr, int *synth_buf_offset,
00045 int32_t *window, int *dither_state,
00046 int16_t *samples, int incr,
00047 int32_t *sb_samples);
00048
00049 void ff_mpa_synth_filter_float(MPADSPContext *s,
00050 float *synth_buf_ptr, int *synth_buf_offset,
00051 float *window, int *dither_state,
00052 float *samples, int incr,
00053 float *sb_samples);
00054
00055 void ff_mpadsp_init_arm(MPADSPContext *s);
00056 void ff_mpadsp_init_mmx(MPADSPContext *s);
00057 void ff_mpadsp_init_altivec(MPADSPContext *s);
00058
00059 void ff_mpa_synth_init_float(float *window);
00060 void ff_mpa_synth_init_fixed(int32_t *window);
00061
00062 void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
00063 int *dither_state, float *samples,
00064 int incr);
00065 void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window,
00066 int *dither_state, int16_t *samples,
00067 int incr);
00068
00069 void ff_imdct36_blocks_float(float *out, float *buf, float *in,
00070 int count, int switch_point, int block_type);
00071
00072 void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,
00073 int count, int switch_point, int block_type);
00074
00075 void ff_init_mpadsp_tabs_float(void);
00076 void ff_init_mpadsp_tabs_fixed(void);
00077
00079 #define MDCT_BUF_SIZE FFALIGN(36, 2*4)
00080
00081 extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];
00082 extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];
00083
00084 #endif