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87 lines
3.5 KiB
C
87 lines
3.5 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_MPEGAUDIODSP_H
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#define AVCODEC_MPEGAUDIODSP_H
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#include <stdint.h>
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#include "libavutil/common.h"
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typedef struct MPADSPContext {
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void (*apply_window_float)(float *synth_buf, float *window,
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int *dither_state, float *samples, int incr);
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void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,
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int *dither_state, int16_t *samples, int incr);
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void (*dct32_float)(float *dst, const float *src);
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void (*dct32_fixed)(int *dst, const int *src);
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void (*imdct36_blocks_float)(float *out, float *buf, float *in,
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int count, int switch_point, int block_type);
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void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,
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int count, int switch_point, int block_type);
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} MPADSPContext;
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void ff_mpadsp_init(MPADSPContext *s);
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extern int32_t ff_mpa_synth_window_fixed[];
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extern float ff_mpa_synth_window_float[];
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extern const int32_t ff_mpa_enwindow[257];
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void ff_mpa_synth_filter_fixed(MPADSPContext *s,
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int32_t *synth_buf_ptr, int *synth_buf_offset,
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int32_t *window, int *dither_state,
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int16_t *samples, int incr,
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int32_t *sb_samples);
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void ff_mpa_synth_filter_float(MPADSPContext *s,
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float *synth_buf_ptr, int *synth_buf_offset,
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float *window, int *dither_state,
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float *samples, int incr,
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float *sb_samples);
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void ff_mpadsp_init_arm(MPADSPContext *s);
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void ff_mpadsp_init_x86(MPADSPContext *s);
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void ff_mpadsp_init_altivec(MPADSPContext *s);
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void ff_mpa_synth_init_float(float *window);
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void ff_mpa_synth_init_fixed(int32_t *window);
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void ff_mpadsp_apply_window_float(float *synth_buf, float *window,
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int *dither_state, float *samples,
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int incr);
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void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window,
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int *dither_state, int16_t *samples,
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int incr);
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void ff_imdct36_blocks_float(float *out, float *buf, float *in,
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int count, int switch_point, int block_type);
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void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,
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int count, int switch_point, int block_type);
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void ff_init_mpadsp_tabs_float(void);
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void ff_init_mpadsp_tabs_fixed(void);
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/** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */
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#define MDCT_BUF_SIZE FFALIGN(36, 2*4)
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extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];
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extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];
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#endif /* AVCODEC_MPEGAUDIODSP_H */
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