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  1. /*
  2.  * AAC Spectral Band Replication function declarations
  3.  * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
  4.  * Copyright (c) 2010      Alex Converse <alex.converse@gmail.com>
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. /**
  24.  * @file
  25.  * AAC Spectral Band Replication function declarations
  26.  * @author Robert Swain ( rob opendot cl )
  27.  */
  28.  
  29. #ifndef AVCODEC_AACSBR_H
  30. #define AVCODEC_AACSBR_H
  31.  
  32. #include "get_bits.h"
  33. #include "aac.h"
  34. #include "sbr.h"
  35.  
  36. /** Initialize SBR. */
  37. void ff_aac_sbr_init(void);
  38. /** Initialize one SBR context. */
  39. void ff_aac_sbr_ctx_init(AACContext *ac, SpectralBandReplication *sbr);
  40. /** Close one SBR context. */
  41. void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr);
  42. /** Decode one SBR element. */
  43. int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
  44.                             GetBitContext *gb, int crc, int cnt, int id_aac);
  45. /** Apply one SBR element to one AAC element. */
  46. void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
  47.                   float* L, float *R);
  48.  
  49. void ff_aacsbr_func_ptr_init_mips(AACSBRContext *c);
  50.  
  51. #endif /* AVCODEC_AACSBR_H */
  52.