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ffmpeg / libavcodec / gsmdec_data.h @ 2912e87a

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/*
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 * gsm 06.10 decoder data
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 * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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 *
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 * This file is part of Libav.
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 *
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 * Libav 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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 * Libav 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 Libav; 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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#ifndef GSMDEC_DATA
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#define GSMDEC_DATA
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#include <stdint.h>
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// input and output sizes in byte
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#define GSM_BLOCK_SIZE    33
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#define GSM_MS_BLOCK_SIZE 65
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#define GSM_FRAME_SIZE   160
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typedef struct {
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    // Contains first 120 elements from the previous frame
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    // (used by long_term_synth according to the "lag"),
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    // then in the following 160 elements the current
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    // frame is constructed.
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    int16_t ref_buf[280];
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    int v[9];
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    int lar[2][8];
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    int lar_idx;
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    int msr;
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} GSMContext;
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extern const uint16_t ff_gsm_long_term_gain_tab[4];
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extern const int16_t ff_gsm_dequant_tab[64][8];
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#endif