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/***
This file is part of PulseAudio.
Copyright 2010 Arun Raghavan <arun.raghavan@collabora.co.uk>
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulse/sample.h>
#include <pulse/channelmap.h>
#include <pulsecore/macro.h>
#include <speex/speex_echo.h>
/* Common data structures */
typedef struct pa_echo_canceller_params pa_echo_canceller_params;
struct pa_echo_canceller_params {
union {
struct {
uint32_t blocksize;
SpeexEchoState *state;
} speex;
/* each canceller-specific structure goes here */
} priv;
};
typedef struct pa_echo_canceller pa_echo_canceller;
struct pa_echo_canceller {
pa_bool_t (*init) (pa_echo_canceller *ec, pa_sample_spec ss, pa_channel_map map, uint32_t filter_size_ms, uint32_t frame_size_ms);
void (*run) (pa_echo_canceller *ec, uint8_t *rec, uint8_t *play, uint8_t *out);
void (*done) (pa_echo_canceller *ec);
uint32_t (*get_block_size) (pa_echo_canceller *ec);
pa_echo_canceller_params params;
};
/* Speex canceller functions */
pa_bool_t pa_speex_ec_init(pa_echo_canceller *ec, pa_sample_spec ss, pa_channel_map map, uint32_t filter_size_ms, uint32_t frame_size_ms);
void pa_speex_ec_run(pa_echo_canceller *ec, uint8_t *rec, uint8_t *play, uint8_t *out);
void pa_speex_ec_done(pa_echo_canceller *ec);
uint32_t pa_speex_ec_get_block_size(pa_echo_canceller *ec);
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