path: root/g711.h
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authorLennart Poettering <>2007-05-12 23:38:38 +0000
committerLennart Poettering <>2007-05-12 23:38:38 +0000
commita64e85acf96bc0c55363fe55c9e9116aef2a8584 (patch)
tree69ec57b46bdebe0e7496bf11ea9a54cdf5806904 /g711.h
parent2eb6dec8e9f0114bdbad59cf8f11f197f8fdaaf3 (diff)
resampling works
git-svn-id: file:///home/lennart/svn/public/libsydney/trunk@4 9ba3c220-e4d3-45a2-8aa3-73fcc9aff6ce
Diffstat (limited to 'g711.h')
1 files changed, 40 insertions, 0 deletions
diff --git a/g711.h b/g711.h
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index 0000000..9b2582d
--- /dev/null
+++ b/g711.h
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+#ifndef foosydneyg711hfoo
+#define foosydneyg711hfoo
+/* g711.h - include for G711 u-law and a-law conversion routines
+** Copyright (C) 2001 Chris Bagwell
+** Permission to use, copy, modify, and distribute this software and its
+** documentation for any purpose and without fee is hereby granted, provided
+** that the above copyright notice appear in all copies and that both that
+** copyright notice and this permission notice appear in supporting
+** documentation. This software is provided "as is" without express or
+** implied warranty.
+/** Copied from sox */
+#include <inttypes.h>
+extern uint8_t _st_13linear2alaw[0x2000];
+extern int16_t _st_alaw2linear16[256];
+#define st_13linear2alaw(sw) (_st_13linear2alaw[(sw + 0x1000)])
+#define st_alaw2linear16(uc) (_st_alaw2linear16[uc])
+unsigned char st_13linear2alaw(int16_t pcm_val);
+int16_t st_alaw2linear16(unsigned char);
+extern uint8_t _st_14linear2ulaw[0x4000];
+extern int16_t _st_ulaw2linear16[256];
+#define st_14linear2ulaw(sw) (_st_14linear2ulaw[(sw + 0x2000)])
+#define st_ulaw2linear16(uc) (_st_ulaw2linear16[uc])
+unsigned char st_14linear2ulaw(int16_t pcm_val);
+int16_t st_ulaw2linear16(unsigned char);