diff options
author | Arun Raghavan <arun.raghavan@collabora.co.uk> | 2010-09-06 15:51:20 +0530 |
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committer | Arun Raghavan <arun.raghavan@collabora.co.uk> | 2011-03-28 14:40:59 +0530 |
commit | 57c598393780e27915c84ff167d82fc85803ffe2 (patch) | |
tree | 731fdd84e5b191b53d5ebf681a2f033dc1b7b48f /src/modules/echo-cancel/echo-cancel.h | |
parent | 6d8a90709e5d0a3dc5c11e4a7d54c2cdbb774f3a (diff) |
echo-cancel: Split out speex code from the core module
This splits out the echo-cancelling core from the PA-specific bits to
allow us to plug in other echo-cancellation engines.
Diffstat (limited to 'src/modules/echo-cancel/echo-cancel.h')
-rw-r--r-- | src/modules/echo-cancel/echo-cancel.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/modules/echo-cancel/echo-cancel.h b/src/modules/echo-cancel/echo-cancel.h new file mode 100644 index 00000000..bb6c0ed4 --- /dev/null +++ b/src/modules/echo-cancel/echo-cancel.h @@ -0,0 +1,61 @@ +/*** + 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); |