/*! \brief decode frame into lin and fill output buffer. */
static int alawtolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
{
int i = f->samples;
unsigned char *src = f->data.ptr;
int16_t *dst = pvt->outbuf.i16 + pvt->samples;
pvt->samples += i;
pvt->datalen += i * 2; /* 2 bytes/sample */
while (i--)
*dst++ = AST_ALAW(*src++);
return 0;
}
static int load_module(void)
{
int res;
int x;
for (x=0;x<256;x++) {
mu2a[x] = AST_LIN2A(AST_MULAW(x));
a2mu[x] = AST_LIN2MU(AST_ALAW(x));
}
res = ast_register_translator(&alawtoulaw);
res |= ast_register_translator(&ulawtoalaw);
if (res) {
unload_module();
return AST_MODULE_LOAD_FAILURE;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int load_module(void)
{
int res;
int x;
ast_format_set(&alawtoulaw.src_format, AST_FORMAT_ALAW, 0);
ast_format_set(&alawtoulaw.dst_format, AST_FORMAT_ULAW, 0);
ast_format_set(&ulawtoalaw.src_format, AST_FORMAT_ULAW, 0);
ast_format_set(&ulawtoalaw.dst_format, AST_FORMAT_ALAW, 0);
for (x=0;x<256;x++) {
mu2a[x] = AST_LIN2A(AST_MULAW(x));
a2mu[x] = AST_LIN2MU(AST_ALAW(x));
}
res = ast_register_translator(&alawtoulaw);
if (!res)
res = ast_register_translator(&ulawtoalaw);
else
ast_unregister_translator(&alawtoulaw);
if (res)
return AST_MODULE_LOAD_FAILURE;
return AST_MODULE_LOAD_SUCCESS;
}
