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/core.h>
29 #include <pulsecore/macro.h>
31 #include <speex/speex_echo.h>
32 #include <speex/speex_preprocess.h>
35 /* Common data structures */
37 typedef struct pa_echo_canceller_params pa_echo_canceller_params;
39 struct pa_echo_canceller_params {
42 SpeexEchoState *state;
48 /* each canceller-specific structure goes here */
52 typedef struct pa_echo_canceller pa_echo_canceller;
54 struct pa_echo_canceller {
55 pa_bool_t (*init) (pa_core *c,
56 pa_echo_canceller *ec,
57 pa_sample_spec *source_ss,
58 pa_channel_map *source_map,
59 pa_sample_spec *sink_ss,
60 pa_channel_map *sink_map,
63 void (*run) (pa_echo_canceller *ec, const uint8_t *rec, const uint8_t *play, uint8_t *out);
64 void (*done) (pa_echo_canceller *ec);
66 pa_echo_canceller_params params;
70 pa_bool_t echo_suppress;
71 int32_t echo_suppress_attenuation;
72 int32_t echo_suppress_attenuation_active;
73 SpeexPreprocessState *pp_state;
76 /* Speex canceller functions */
77 pa_bool_t pa_speex_ec_init(pa_core *c, pa_echo_canceller *ec,
78 pa_sample_spec *source_ss, pa_channel_map *source_map,
79 pa_sample_spec *sink_ss, pa_channel_map *sink_map,
80 uint32_t *blocksize, const char *args);
81 void pa_speex_ec_run(pa_echo_canceller *ec, const uint8_t *rec, const uint8_t *play, uint8_t *out);
82 void pa_speex_ec_done(pa_echo_canceller *ec);
84 /* Adrian Andre's echo canceller */
85 pa_bool_t pa_adrian_ec_init(pa_core *c, pa_echo_canceller *ec,
86 pa_sample_spec *source_ss, pa_channel_map *source_map,
87 pa_sample_spec *sink_ss, pa_channel_map *sink_map,
88 uint32_t *blocksize, const char *args);
89 void pa_adrian_ec_run(pa_echo_canceller *ec, const uint8_t *rec, const uint8_t *play, uint8_t *out);
90 void pa_adrian_ec_done(pa_echo_canceller *ec);