-} echo_can_state_t;
-
-/*! Create a voice echo canceller context.
- \param len The length of the canceller, in samples.
- \return The new canceller context, or NULL if the canceller could not be created.
-*/
-echo_can_state_t *echo_can_create(int len, int adaption_mode);
-
-/*! Free a voice echo canceller context.
- \param ec The echo canceller context.
-*/
-void echo_can_free(echo_can_state_t *ec);
-
-/*! Flush (reinitialise) a voice echo canceller context.
- \param ec The echo canceller context.
-*/
-void echo_can_flush(echo_can_state_t *ec);
-
-/*! Set the adaption mode of a voice echo canceller context.
- \param ec The echo canceller context.
- \param adapt The mode.
-*/
-void echo_can_adaption_mode(echo_can_state_t *ec, int adaption_mode);
-
-void echo_can_snapshot(echo_can_state_t *ec);
-
-/*! Process a sample through a voice echo canceller.
- \param ec The echo canceller context.
- \param tx The transmitted audio sample.
- \param rx The received audio sample.
- \return The clean (echo cancelled) received sample.
-*/
-int16_t echo_can_update(echo_can_state_t *ec, int16_t tx, int16_t rx);
-
-/*! Process to high pass filter the tx signal.
- \param ec The echo canceller context.
- \param tx The transmitted auio sample.
- \return The HP filtered transmit sample, send this to your D/A.
-*/
-int16_t echo_can_hpf_tx(echo_can_state_t *ec, int16_t tx);