/*
* Destroy the Echo Canceller.
*/
PJ_DEF(pj_status_t) pjmedia_echo_destroy(pjmedia_echo_state *echo )
{
(*echo->op->ec_destroy)(echo->state);
if (echo->delay_buf) {
pjmedia_delay_buf_destroy(echo->delay_buf);
echo->delay_buf = NULL;
}
pj_pool_release(echo->pool);
return PJ_SUCCESS;
}
/*
* Destroy the Echo Canceller.
*/
pjs_echo_canceller::~pjs_echo_canceller() {
if (delay_buf) {
pjmedia_delay_buf_destroy(delay_buf);
}
delete lock;
if (preprocess) {
speex_preprocess_state_destroy(preprocess);
}
if (state) {
speex_echo_state_destroy(state);
}
pj_pool_release(pool);
}
/*
* Create reverse phase port for the specified channel.
*/
PJ_DEF(pj_status_t) pjmedia_splitcomb_create_rev_channel( pj_pool_t *pool,
pjmedia_port *splitcomb,
unsigned ch_num,
unsigned options,
pjmedia_port **p_chport)
{
const pj_str_t name = pj_str("scomb-rev");
struct splitcomb *sc = (struct splitcomb*) splitcomb;
struct reverse_port *rport;
unsigned buf_cnt;
const pjmedia_audio_format_detail *sc_afd, *p_afd;
pjmedia_port *port;
pj_status_t status;
/* Sanity check */
PJ_ASSERT_RETURN(pool && splitcomb, PJ_EINVAL);
/* Make sure this is really a splitcomb port */
PJ_ASSERT_RETURN(sc->base.info.signature == SIGNATURE, PJ_EINVAL);
/* Check the channel number */
PJ_ASSERT_RETURN(ch_num < PJMEDIA_PIA_CCNT(&sc->base.info), PJ_EINVAL);
/* options is unused for now */
PJ_UNUSED_ARG(options);
sc_afd = pjmedia_format_get_audio_format_detail(&splitcomb->info.fmt, 1);
/* Create the port */
rport = PJ_POOL_ZALLOC_T(pool, struct reverse_port);
rport->parent = sc;
rport->ch_num = ch_num;
/* Initialize port info... */
port = &rport->base;
pjmedia_port_info_init(&port->info, &name, SIGNATURE_PORT,
sc_afd->clock_rate, 1,
sc_afd->bits_per_sample,
PJMEDIA_PIA_SPF(&splitcomb->info) /
sc_afd->channel_count);
p_afd = pjmedia_format_get_audio_format_detail(&port->info.fmt, 1);
/* ... and the callbacks */
port->put_frame = &rport_put_frame;
port->get_frame = &rport_get_frame;
port->on_destroy = &rport_on_destroy;
/* Buffer settings */
buf_cnt = options & 0xFF;
if (buf_cnt == 0)
buf_cnt = MAX_BUF_CNT;
rport->max_burst = MAX_BURST;
rport->max_null_frames = MAX_NULL_FRAMES;
/* Create downstream/put buffers */
status = pjmedia_delay_buf_create(pool, "scombdb-dn",
p_afd->clock_rate,
PJMEDIA_PIA_SPF(&port->info),
p_afd->channel_count,
buf_cnt * p_afd->frame_time_usec / 1000,
0, &rport->buf[DIR_DOWNSTREAM].dbuf);
if (status != PJ_SUCCESS) {
return status;
}
/* Create upstream/get buffers */
status = pjmedia_delay_buf_create(pool, "scombdb-up",
p_afd->clock_rate,
PJMEDIA_PIA_SPF(&port->info),
p_afd->channel_count,
buf_cnt * p_afd->frame_time_usec / 1000,
0, &rport->buf[DIR_UPSTREAM].dbuf);
if (status != PJ_SUCCESS) {
pjmedia_delay_buf_destroy(rport->buf[DIR_DOWNSTREAM].dbuf);
return status;
}
/* And temporary upstream/get buffer */
rport->tmp_up_buf = (pj_int16_t*)
pj_pool_alloc(pool,
PJMEDIA_PIA_AVG_FSZ(&port->info));
/* Save port in the splitcomb */
sc->port_desc[ch_num].port = &rport->base;
sc->port_desc[ch_num].reversed = PJ_TRUE;
/* Done */
*p_chport = port;
return status;
}
