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use the fsk_modem_definitions array 

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@215 a93c3328-9c30-0410-af19-c9cd2b2d52af
This commit is contained in:
Michael Jerris 2007-06-05 04:23:58 +00:00
parent 7e410bb608
commit 9db8af8e8f
1 changed files with 6 additions and 15 deletions
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21
libs/freetdm/src/dsp/fsk.c
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@ -46,15 +46,6 @@
#define M_PI 3.14159265358979323846
#endif
/* local constants */
#define BELL202_MARK 1200
#define BELL202_SPACE 2200
#define BELL202_BAUD 1200
#define V23_MARK 1300
#define V23_SPACE 2100
#define V23_BAUD 1200
static fsk_modem_definition_t fsk_modem_definitions[] =
{
{ /* FSK_V23_FORWARD_MODE1 */ 1700, 1300, 600 },
@ -154,15 +145,15 @@ dsp_fsk_handle_t *dsp_fsk_create(dsp_fsk_attr_t *attr)
memcpy(&handle->attr, attr, sizeof(*attr));
/* see if we can do downsampling. We only really need 6 samples to "match" */
if (attr->sample_rate / BELL202_MARK > 6) {
handle->downsampling_count = attr->sample_rate / BELL202_MARK / 6;
if (attr->sample_rate / fsk_modem_definitions[FSK_BELL202].freq_mark > 6) {
handle->downsampling_count = attr->sample_rate / fsk_modem_definitions[FSK_BELL202].freq_mark / 6;
} else {
handle->downsampling_count = 1;
}
handle->current_downsample = 1;
/* calculate the correlate size (number of samples required for slowest wave) */
handle->corrsize = attr->sample_rate / handle->downsampling_count / BELL202_MARK;
handle->corrsize = attr->sample_rate / handle->downsampling_count / fsk_modem_definitions[FSK_BELL202].freq_mark;
/* allocate the correlation sin/cos arrays and initialize */
for (i = 0; i < 4; i++) {
@ -175,8 +166,8 @@ dsp_fsk_handle_t *dsp_fsk_create(dsp_fsk_attr_t *attr)
}
/* now initialize them */
phi_mark = 2. * M_PI / ((double) attr->sample_rate / (double) handle->downsampling_count / (double) BELL202_MARK);
phi_space = 2. * M_PI / ((double) attr->sample_rate / (double) handle->downsampling_count / (double) BELL202_SPACE);
phi_mark = 2. * M_PI / ((double) attr->sample_rate / (double) handle->downsampling_count / (double) fsk_modem_definitions[FSK_BELL202].freq_mark);
phi_space = 2. * M_PI / ((double) attr->sample_rate / (double) handle->downsampling_count / (double) fsk_modem_definitions[FSK_BELL202].freq_space);
for (i = 0; i < handle->corrsize; i++) {
handle->correlates[0][i] = sin(phi_mark * (double) i);
@ -196,7 +187,7 @@ dsp_fsk_handle_t *dsp_fsk_create(dsp_fsk_attr_t *attr)
/* initalize intra-cell position */
handle->cellpos = 0;
handle->celladj = BELL202_BAUD / (double) attr->sample_rate * (double) handle->downsampling_count;
handle->celladj = fsk_modem_definitions[FSK_BELL202].baud_rate / (double) attr->sample_rate * (double) handle->downsampling_count;
/* if they have provided a byte handler, add a UART to the processing chain */
if (handle->attr.bytehandler) {