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 25 #include "libavutil/common.h" 26 27 typedef struct MPADSPContext { 28 void (*apply_window_float)(float *synth_buf, float *window, 29 int *dither_state, float *samples, 30 ptrdiff_t incr); 31 void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window, 32 int *dither_state, int16_t *samples, 33 ptrdiff_t incr); 34 void (*dct32_float)(float *dst, const float *src); 35 void (*dct32_fixed)(int *dst, const int *src); 36 37 void (*imdct36_blocks_float)(float *out, float *buf, float *in, 38 int count, int switch_point, int block_type); 39 void (*imdct36_blocks_fixed)(int *out, int *buf, int *in, 40 int count, int switch_point, int block_type); 41 } MPADSPContext; 42 43 void ff_mpadsp_init(MPADSPContext *s); 44 45 extern int32_t ff_mpa_synth_window_fixed[]; 46 extern float ff_mpa_synth_window_float[]; 47 48 extern const int32_t ff_mpa_enwindow[257]; 49 50 void ff_mpa_synth_filter_fixed(MPADSPContext *s, 51 int32_t *synth_buf_ptr, int *synth_buf_offset, 52 int32_t *window, int *dither_state, 53 int16_t *samples, ptrdiff_t incr, 54 int32_t *sb_samples); 55 56 void ff_mpa_synth_filter_float(MPADSPContext *s, 57 float *synth_buf_ptr, int *synth_buf_offset, 58 float *window, int *dither_state, 59 float *samples, ptrdiff_t incr, 60 float *sb_samples); 61 62 void ff_mpadsp_init_aarch64(MPADSPContext *s); 63 void ff_mpadsp_init_arm(MPADSPContext *s); 64 void ff_mpadsp_init_ppc(MPADSPContext *s); 65 void ff_mpadsp_init_x86(MPADSPContext *s); 66 void ff_mpadsp_init_x86_tabs(void); 67 void ff_mpadsp_init_mipsfpu(MPADSPContext *s); 68 void ff_mpadsp_init_mipsdsp(MPADSPContext *s); 69 70 void ff_mpa_synth_init_float(void); 71 void ff_mpa_synth_init_fixed(void); 72 73 void ff_mpadsp_apply_window_float(float *synth_buf, float *window, 74 int *dither_state, float *samples, 75 ptrdiff_t incr); 76 void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, 77 int *dither_state, int16_t *samples, 78 ptrdiff_t incr); 79 80 void ff_imdct36_blocks_float(float *out, float *buf, float *in, 81 int count, int switch_point, int block_type); 82 83 void ff_imdct36_blocks_fixed(int *out, int *buf, int *in, 84 int count, int switch_point, int block_type); 85 86 /** For SSE implementation, MDCT_BUF_SIZE/2 should be 128-bit aligned */ 87 #define MDCT_BUF_SIZE FFALIGN(36, 2*4) 88 89 extern int ff_mdct_win_fixed[8][MDCT_BUF_SIZE]; 90 extern float ff_mdct_win_float[8][MDCT_BUF_SIZE]; 91 92 #endif /* AVCODEC_MPEGAUDIODSP_H */ 93