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freetdm: saturated add and pri tapping mixing

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This commit is contained in:
Moises Silva
2010-08-01 03:02:53 -04:00
parent 9327c99488
commit e0b1ea7faa
4 changed files with 84 additions and 3 deletions
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13
libs/freetdm/src/include/private/ftdm_core.h
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@@ -457,6 +457,7 @@ struct ftdm_span {
fio_channel_request_t channel_request;
ftdm_span_start_t start;
ftdm_span_stop_t stop;
ftdm_channel_sig_read_t sig_read;
void *mod_data;
char *type;
char *dtmf_hangup;
@@ -669,6 +670,18 @@ static __inline__ void ftdm_clear_flag_all(ftdm_span_t *span, uint32_t flag)
ftdm_mutex_unlock(span->mutex);
}
static __inline__ int16_t ftdm_saturated_add(int16_t sample1, int16_t sample2)
{
int addres;
addres = sample1 + sample2;
if (addres > 32767)
addres = 32767;
else if (addres < -32767)
addres = -32767;
return addres;
}
#ifdef __cplusplus
}
#endif

1
libs/freetdm/src/include/private/ftdm_types.h
View File

@@ -360,6 +360,7 @@ typedef struct ftdm_bitstream ftdm_bitstream_t;
typedef struct ftdm_fsk_modulator ftdm_fsk_modulator_t;
typedef ftdm_status_t (*ftdm_span_start_t)(ftdm_span_t *span);
typedef ftdm_status_t (*ftdm_span_stop_t)(ftdm_span_t *span);
typedef ftdm_status_t (*ftdm_channel_sig_read_t)(ftdm_channel_t *ftdmchan, void *data, ftdm_size_t size);
#ifdef __cplusplus
}