mpegaudiodsp.h - mozsearch

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/*

 * This file is part of FFmpeg.

 * FFmpeg is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 * FFmpeg is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public

 * License along with FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

*/

#ifndef AVCODEC_MPEGAUDIODSP_H

#define AVCODEC_MPEGAUDIODSP_H

#include <stddef.h>

#include <stdint.h>

#include "libavutil/attributes_internal.h"

#include "libavutil/macros.h"

typedef struct MPADSPContext {

    void (*apply_window_float)(float *synth_buf, float *window,

                               int *dither_state, float *samples,

                               ptrdiff_t incr);

    void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window,

                               int *dither_state, int16_t *samples,

                               ptrdiff_t incr);

    void (*dct32_float)(float *dst, const float *src);

    void (*dct32_fixed)(int *dst, const int *src);

    void (*imdct36_blocks_float)(float *out, float *buf, float *in,

                                 int count, int switch_point, int block_type);

    void (*imdct36_blocks_fixed)(int *out, int *buf, int *in,

                                 int count, int switch_point, int block_type);

} MPADSPContext;

FF_VISIBILITY_PUSH_HIDDEN

void ff_mpadsp_init(MPADSPContext *s);

extern int32_t ff_mpa_synth_window_fixed[];

extern float   ff_mpa_synth_window_float[];

extern const int32_t ff_mpa_enwindow[257];

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);

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);

void ff_mpadsp_init_aarch64(MPADSPContext *s);

void ff_mpadsp_init_arm(MPADSPContext *s);

void ff_mpadsp_init_ppc(MPADSPContext *s);

void ff_mpadsp_init_x86(MPADSPContext *s);

void ff_mpadsp_init_x86_tabs(void);

void ff_mpadsp_init_mipsfpu(MPADSPContext *s);

void ff_mpadsp_init_mipsdsp(MPADSPContext *s);

void ff_mpa_synth_init_float(void);

void ff_mpa_synth_init_fixed(void);

void ff_mpadsp_apply_window_float(float *synth_buf, float *window,

                                  int *dither_state, float *samples,

                                  ptrdiff_t incr);

void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window,

                                  int *dither_state, int16_t *samples,

                                  ptrdiff_t incr);

void ff_imdct36_blocks_float(float *out, float *buf, float *in,

                             int count, int switch_point, int block_type);

void ff_imdct36_blocks_fixed(int *out, int *buf, int *in,

                             int count, int switch_point, int block_type);

/** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */

#define MDCT_BUF_SIZE FFALIGN(36, 2*4)

extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE];

extern float ff_mdct_win_float[8][MDCT_BUF_SIZE];

FF_VISIBILITY_POP_HIDDEN

#endif /* AVCODEC_MPEGAUDIODSP_H */