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16dd5f7872
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1438 fefdeb5f-60dc-0310-8127-8f9354f1896f
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
#ifndef foog711hfoo
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#define foog711hfoo
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/* g711.h - include for G711 u-law and a-law conversion routines
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**
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** Copyright (C) 2001 Chris Bagwell
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**
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** Permission to use, copy, modify, and distribute this software and its
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** documentation for any purpose and without fee is hereby granted, provided
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** that the above copyright notice appear in all copies and that both that
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** copyright notice and this permission notice appear in supporting
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** documentation. This software is provided "as is" without express or
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** implied warranty.
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*/
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/** Copied from sox -- Lennart Poettering */
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#include <inttypes.h>
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#ifdef FAST_ALAW_CONVERSION
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extern uint8_t _st_13linear2alaw[0x2000];
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extern int16_t _st_alaw2linear16[256];
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#define st_13linear2alaw(sw) (_st_13linear2alaw[(sw + 0x1000)])
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#define st_alaw2linear16(uc) (_st_alaw2linear16[uc])
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#else
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unsigned char st_13linear2alaw(int16_t pcm_val);
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int16_t st_alaw2linear16(unsigned char);
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#endif
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#ifdef FAST_ULAW_CONVERSION
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extern uint8_t _st_14linear2ulaw[0x4000];
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extern int16_t _st_ulaw2linear16[256];
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#define st_14linear2ulaw(sw) (_st_14linear2ulaw[(sw + 0x2000)])
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#define st_ulaw2linear16(uc) (_st_ulaw2linear16[uc])
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#else
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unsigned char st_14linear2ulaw(int16_t pcm_val);
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int16_t st_ulaw2linear16(unsigned char);
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#endif
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#endif
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