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
22 #ifndef fooechocancelhfoo
23 #define fooechocancelhfoo
29 #include <pulse/sample.h>
30 #include <pulse/channelmap.h>
31 #include <pulsecore/core.h>
32 #include <pulsecore/macro.h>
34 #include <speex/speex_echo.h>
35 #include <speex/speex_preprocess.h>
38 /* Common data structures */
40 typedef struct pa_echo_canceller_params pa_echo_canceller_params
;
42 struct pa_echo_canceller_params
{
45 SpeexEchoState
*state
;
46 SpeexPreprocessState
*pp_state
;
54 /* This is a void* so that we don't have to convert this whole file
55 * to C++ linkage. apm is a pointer to an AudioProcessing object */
58 pa_sample_spec sample_spec
;
61 /* each canceller-specific structure goes here */
65 typedef struct pa_echo_canceller pa_echo_canceller
;
67 struct pa_echo_canceller
{
68 pa_bool_t (*init
) (pa_core
*c
,
69 pa_echo_canceller
*ec
,
70 pa_sample_spec
*source_ss
,
71 pa_channel_map
*source_map
,
72 pa_sample_spec
*sink_ss
,
73 pa_channel_map
*sink_map
,
76 void (*run
) (pa_echo_canceller
*ec
, const uint8_t *rec
, const uint8_t *play
, uint8_t *out
);
77 void (*done
) (pa_echo_canceller
*ec
);
79 pa_echo_canceller_params params
;
82 /* Speex canceller functions */
83 pa_bool_t
pa_speex_ec_init(pa_core
*c
, pa_echo_canceller
*ec
,
84 pa_sample_spec
*source_ss
, pa_channel_map
*source_map
,
85 pa_sample_spec
*sink_ss
, pa_channel_map
*sink_map
,
86 uint32_t *blocksize
, const char *args
);
87 void pa_speex_ec_run(pa_echo_canceller
*ec
, const uint8_t *rec
, const uint8_t *play
, uint8_t *out
);
88 void pa_speex_ec_done(pa_echo_canceller
*ec
);
90 /* Adrian Andre's echo canceller */
91 pa_bool_t
pa_adrian_ec_init(pa_core
*c
, pa_echo_canceller
*ec
,
92 pa_sample_spec
*source_ss
, pa_channel_map
*source_map
,
93 pa_sample_spec
*sink_ss
, pa_channel_map
*sink_map
,
94 uint32_t *blocksize
, const char *args
);
95 void pa_adrian_ec_run(pa_echo_canceller
*ec
, const uint8_t *rec
, const uint8_t *play
, uint8_t *out
);
96 void pa_adrian_ec_done(pa_echo_canceller
*ec
);
99 /* WebRTC canceller functions */
101 pa_bool_t
pa_webrtc_ec_init(pa_core
*c
, pa_echo_canceller
*ec
,
102 pa_sample_spec
*source_ss
, pa_channel_map
*source_map
,
103 pa_sample_spec
*sink_ss
, pa_channel_map
*sink_map
,
104 uint32_t *blocksize
, const char *args
);
105 void pa_webrtc_ec_run(pa_echo_canceller
*ec
, const uint8_t *rec
, const uint8_t *play
, uint8_t *out
);
106 void pa_webrtc_ec_done(pa_echo_canceller
*ec
);
110 #endif /* fooechocancelhfoo */