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git-svn-id: http://svn.openzap.org/svn/openzap/trunk@231 a93c3328-9c30-0410-af19-c9cd2b2d52af
This commit is contained in:
Anthony Minessale 2007-06-07 03:28:07 +00:00
parent d699160e0c
commit 8472ec1850
1 changed files with 9 additions and 9 deletions
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16
libs/openzap/src/include/libteletone_generate.h
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@ -112,7 +112,7 @@ struct teletone_dds_state {
uint32_t scale_factor; uint32_t scale_factor;
uint32_t phase_accumulator; uint32_t phase_accumulator;
int16_t sample; int16_t sample;
float tx_level; teletone_process_t tx_level;
}; };
typedef struct teletone_dds_state teletone_dds_state_t; typedef struct teletone_dds_state teletone_dds_state_t;
@ -145,24 +145,24 @@ static __inline__ int16_t teletone_dds_modulate_sample(teletone_dds_state_t *dds
return (int16_t) (sample * dds->scale_factor >> 15); return (int16_t) (sample * dds->scale_factor >> 15);
} }
static __inline__ void teletone_dds_state_set_tone(teletone_dds_state_t *dds, float tone, uint32_t rate, float tx_level) static __inline__ void teletone_dds_state_set_tx_level(teletone_dds_state_t *dds, teletone_process_t tx_level)
{
dds->scale_factor = (int) (powf(10.0f, (tx_level - DBM0_MAX_POWER) / 20.0f) * (32767.0f * 1.414214f));
}
static __inline__ void teletone_dds_state_set_tone(teletone_dds_state_t *dds, teletone_process_t tone, uint32_t rate, teletone_process_t tx_level)
{ {
dds->phase_accumulator = 0; dds->phase_accumulator = 0;
dds->phase_rate = (int32_t) ((tone * MAX_PHASE_ACCUMULATOR) / rate); dds->phase_rate = (int32_t) ((tone * MAX_PHASE_ACCUMULATOR) / rate);
if (dds->tx_level != tx_level || !dds->scale_factor) { if (dds->tx_level != tx_level || !dds->scale_factor) {
dds->scale_factor = (int) (powf(10.0f, (tx_level - DBM0_MAX_POWER) / 20.0f) * (32767.0f * 1.414214f)); teletone_dds_state_set_tx_level(dds, tx_level);
} }
dds->tx_level = tx_level; dds->tx_level = tx_level;
} }
static __inline__ void teletone_dds_state_set_tx_level(teletone_dds_state_t *dds, float tx_level)
{
dds->scale_factor = (int) (powf(10.0f, (tx_level - DBM0_MAX_POWER) / 20.0f) * (32767.0f * 1.414214f));
}
/*! \file libteletone_generate.h /*! \file libteletone_generate.h