/* * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; 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 <stdint.h> #include "libavutil/common.h" typedef struct MPADSPContext { void (*apply_window_float)(float *synth_buf, float *window, int *dither_state, float *samples, int incr); void (*apply_window_fixed)(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, int 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; 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, int 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, int incr, float *sb_samples); void ff_mpadsp_init_arm(MPADSPContext *s); void ff_mpadsp_init_x86(MPADSPContext *s); void ff_mpadsp_init_altivec(MPADSPContext *s); void ff_mpadsp_init_mipsfpu(MPADSPContext *s); void ff_mpadsp_init_mipsdspr1(MPADSPContext *s); void ff_mpa_synth_init_float(float *window); void ff_mpa_synth_init_fixed(int32_t *window); void ff_mpadsp_apply_window_float(float *synth_buf, float *window, int *dither_state, float *samples, int incr); void ff_mpadsp_apply_window_fixed(int32_t *synth_buf, int32_t *window, int *dither_state, int16_t *samples, int 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); void ff_init_mpadsp_tabs_float(void); void ff_init_mpadsp_tabs_fixed(void); /** 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]; #endif /* AVCODEC_MPEGAUDIODSP_H */