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51 lines
1.9 KiB
51 lines
1.9 KiB
/* |
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* AAC Spectral Band Replication function declarations |
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* Copyright (c) 2008-2009 Robert Swain ( rob opendot cl ) |
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* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> |
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* |
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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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/** |
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* @file libavcodec/aacsbr.h |
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* AAC Spectral Band Replication function declarations |
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* @author Robert Swain ( rob opendot cl ) |
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*/ |
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#ifndef AVCODEC_AACSBR_H |
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#define AVCODEC_AACSBR_H |
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#include "get_bits.h" |
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#include "aac.h" |
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#include "sbr.h" |
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/** Initialize SBR. */ |
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av_cold void ff_aac_sbr_init(void); |
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/** Initialize one SBR context. */ |
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av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr); |
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/** Close one SBR context. */ |
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av_cold void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr); |
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/** Decode one SBR element. */ |
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int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr, |
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GetBitContext *gb, int crc, int cnt, int id_aac); |
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/** Dequantized all channels in one SBR element. */ |
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void ff_sbr_dequant(AACContext *ac, SpectralBandReplication *sbr, int id_aac); |
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/** Apply dequantized SBR to a single AAC channel. */ |
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void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int ch, |
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const float* in, float* out); |
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#endif /* AVCODEC_AACSBR_H */
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