Asterisk - The Open Source Telephony Project
21.4.1
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A-Law to Signed linear conversion. More...
Go to the source code of this file.
Macros | |
#define | AST_ALAW(a) (__ast_alaw[(int)(a)]) |
#define | AST_ALAW_AMI_MASK 0x55 |
#define | AST_ALAW_BIT_LOSS 4 |
#define | AST_ALAW_SIGN_BIT 0x80 |
#define | AST_ALAW_STEP (1 << AST_ALAW_BIT_LOSS) |
#define | AST_ALAW_TAB_SIZE (32768 / AST_ALAW_STEP + 1) |
#define | AST_LIN2A(a) (__ast_lin2a[((unsigned short)(a)) >> 3]) |
Functions | |
void | ast_alaw_init (void) |
To init the alaw to slinear conversion stuff, this needs to be run. | |
Variables | |
short | __ast_alaw [256] |
unsigned char | __ast_lin2a [8192] |
converts signed linear to alaw | |
A-Law to Signed linear conversion.
Definition in file alaw.h.