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  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_DCADSP_H
  20. #define AVCODEC_DCADSP_H
  21.  
  22. #include "avfft.h"
  23. #include "synth_filter.h"
  24.  
  25. #define DCA_SUBBANDS 64
  26.  
  27. typedef struct DCADSPContext {
  28.     void (*lfe_fir[2])(float *out, const float *in, const float *coefs);
  29.     void (*qmf_32_subbands)(float samples_in[32][8], int sb_act,
  30.                             SynthFilterContext *synth, FFTContext *imdct,
  31.                             float synth_buf_ptr[512],
  32.                             int *synth_buf_offset, float synth_buf2[32],
  33.                             const float window[512], float *samples_out,
  34.                             float raXin[32], float scale);
  35.     void (*decode_hf)(float dst[DCA_SUBBANDS][8],
  36.                       const int32_t vq_num[DCA_SUBBANDS],
  37.                       const int8_t hf_vq[1024][32], intptr_t vq_offset,
  38.                       int32_t scale[DCA_SUBBANDS][2],
  39.                       intptr_t start, intptr_t end);
  40. } DCADSPContext;
  41.  
  42. void ff_dcadsp_init(DCADSPContext *s);
  43. void ff_dcadsp_init_arm(DCADSPContext *s);
  44. void ff_dcadsp_init_x86(DCADSPContext *s);
  45.  
  46. #endif /* AVCODEC_DCADSP_H */
  47.