Create an accumulator (type 3) element
#include <audio_driver.h> ado_mixer_delement_t * ado_mixer_element_accu3 ( ado_mixer_t *mixer, char *name, uint32_t number_of_voices, struct snd_mixer_element_accu3_range *ranges, ado_mixer_delement_control_accu3_t *control, void *instance_data, void (*instance_free) (void *data) );
The prototype is:
int32_t control( MIXER_CONTEXT_T *context, ado_mixer_delement_t *element, uint8_t set, uint32_t *voices, void *instance_data );
If you need to access this instance data, you have to call ado_mixer_get_element_instance_data() because ado_mixer_delement_t is an opaque data type.
The ado_mixer_element_accu3() convenience function automates the creation of an accumulator (type 3) element. An accumulator of type 3 mixes together multiple inputs into a single output with programmable attenuation.
A pointer to the newly allocated accumulator (type 3) element.
QNX Neutrino
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | No |
Thread | No |
ado_mixer_create(), ado_mixer_element_accu1(), ado_mixer_element_accu2(), ado_mixer_get_element_instance_data()