2 This file is part of PulseAudio.
4 Copyright 2010 Arun Raghavan <arun.raghavan@collabora.co.uk>
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <pulse/sample.h>
27 #include <pulse/channelmap.h>
28 #include <pulsecore/macro.h>
30 #include <speex/speex_echo.h>
33 /* Common data structures */
35 typedef struct pa_echo_canceller_params pa_echo_canceller_params
;
37 struct pa_echo_canceller_params
{
40 SpeexEchoState
*state
;
46 /* each canceller-specific structure goes here */
50 typedef struct pa_echo_canceller pa_echo_canceller
;
52 struct pa_echo_canceller
{
53 pa_bool_t (*init
) (pa_echo_canceller
*ec
,
54 pa_sample_spec
*source_ss
,
55 pa_channel_map
*source_map
,
56 pa_sample_spec
*sink_ss
,
57 pa_channel_map
*sink_map
,
60 void (*run
) (pa_echo_canceller
*ec
, uint8_t *rec
, uint8_t *play
, uint8_t *out
);
61 void (*done
) (pa_echo_canceller
*ec
);
63 pa_echo_canceller_params params
;
66 /* Speex canceller functions */
67 pa_bool_t
pa_speex_ec_init(pa_echo_canceller
*ec
,
68 pa_sample_spec
*source_ss
, pa_channel_map
*source_map
,
69 pa_sample_spec
*sink_ss
, pa_channel_map
*sink_map
,
70 uint32_t *blocksize
, const char *args
);
71 void pa_speex_ec_run(pa_echo_canceller
*ec
, uint8_t *rec
, uint8_t *play
, uint8_t *out
);
72 void pa_speex_ec_done(pa_echo_canceller
*ec
);
74 /* Adrian Andre's echo canceller */
75 pa_bool_t
pa_adrian_ec_init(pa_echo_canceller
*ec
,
76 pa_sample_spec
*source_ss
, pa_channel_map
*source_map
,
77 pa_sample_spec
*sink_ss
, pa_channel_map
*sink_map
,
78 uint32_t *blocksize
, const char *args
);
79 void pa_adrian_ec_run(pa_echo_canceller
*ec
, uint8_t *rec
, uint8_t *play
, uint8_t *out
);
80 void pa_adrian_ec_done(pa_echo_canceller
*ec
);