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https://github.com/FFmpeg/FFmpeg.git
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16bb8247b4
These arrays are used by the Musepack decoders, the MPEG audio decoders as well as qdm2 and up until now, these arrays might be initialized more than once, leading to potential data races as well as unnecessary initializations. Therefore this commit ensures that each array will only be initialized once. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
93 lines
3.7 KiB
C
93 lines
3.7 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 <stddef.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,
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ptrdiff_t 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,
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ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t incr,
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float *sb_samples);
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void ff_mpadsp_init_aarch64(MPADSPContext *s);
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void ff_mpadsp_init_arm(MPADSPContext *s);
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void ff_mpadsp_init_ppc(MPADSPContext *s);
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void ff_mpadsp_init_x86(MPADSPContext *s);
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void ff_mpadsp_init_x86_tabs(void);
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void ff_mpadsp_init_mipsfpu(MPADSPContext *s);
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void ff_mpadsp_init_mipsdsp(MPADSPContext *s);
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void ff_mpa_synth_init_float(void);
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void ff_mpa_synth_init_fixed(void);
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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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ptrdiff_t 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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ptrdiff_t 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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/** 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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