2007-11-04 03:34:51 +00:00
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/*
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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** adpcm.h - include file for adpcm coder.
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**
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** Version 1.0, 7-Jul-92.
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**
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** Modded 10/3/98
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** John Scott
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*/
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typedef struct adpcm_state_s
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{
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short in_valprev; // Previous output value
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short in_index; // Index into stepsize table
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short out_valprev; // Previous output value
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short out_index; // Index into stepsize table
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int count; // Number of sample counts
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} adpcm_state_t;
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typedef struct adpcm_s
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{
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adpcm_state_t state;
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char adpcm[0x10000];
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} adpcm_t;
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void adpcm_coder(short [], adpcm_t *);
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void adpcm_decoder(adpcm_t *, short []);
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// end
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