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Defines | |
#define | AST_ALAW(a) (__ast_alaw[(int)(a)]) |
#define | AST_LIN2A(a) (__ast_lin2a[((unsigned short)(a)) >> 3]) |
Functions | |
void | ast_alaw_init (void) |
Variables | |
short | __ast_alaw [256] |
unsigned char | __ast_lin2a [8192] |
Definition in file alaw.h.
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Definition at line 41 of file alaw.h. Referenced by alawtolin_framein(), ast_dsp_process(), fill_rxgain(), fill_txgain(), and load_module(). |
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Definition at line 40 of file alaw.h. Referenced by fill_rxgain(), fill_txgain(), lintoalaw_framein(), and load_module(). |
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To init the ulaw to slinear conversion stuff, this needs to be run. Definition at line 83 of file alaw.c. References alaw2linear(). 00084 { 00085 int i; 00086 /* 00087 * Set up mu-law conversion table 00088 */ 00089 for(i = 0;i < 256;i++) 00090 { 00091 __ast_alaw[i] = alaw2linear(i); 00092 } 00093 /* set up the reverse (mu-law) conversion table */ 00094 for(i = -32768; i < 32768; i++) 00095 { 00096 __ast_lin2a[((unsigned short)i) >> 3] = linear2alaw(i); 00097 } 00098 00099 }
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