echo-cancel: Set sane defaults for module initialisation

This picks sane defaults for the sample spec used (32 kHz, mono) and
preprocessing (on by default). This should make it unncessary to provide
additional parameters in the default desktop case.

The main exception would be decreasing the sample rate for hardware with
limited processing power (can bring it down to 16 or 8 kHz).

diff --git a/src/modules/echo-cancel/module-echo-cancel.c b/src/modules/echo-cancel/module-echo-cancel.c
index b84bf1d..a03fa82 100644 (file)
--- a/src/modules/echo-cancel/module-echo-cancel.c
+++ b/src/modules/echo-cancel/module-echo-cancel.c
@@ -105,10 +105,12 @@ static const pa_echo_canceller ec_table[] = {
     },
 };
 
+#define DEFAULT_RATE 32000
+#define DEFAULT_CHANNELS 1
 #define DEFAULT_ADJUST_TIME_USEC (1*PA_USEC_PER_SEC)
-#define DEFAULT_AGC_ENABLED FALSE
-#define DEFAULT_DENOISE_ENABLED FALSE
-#define DEFAULT_ECHO_SUPPRESS_ENABLED FALSE
+#define DEFAULT_AGC_ENABLED TRUE
+#define DEFAULT_DENOISE_ENABLED TRUE
+#define DEFAULT_ECHO_SUPPRESS_ENABLED TRUE
 #define DEFAULT_ECHO_SUPPRESS_ATTENUATION 0
 #define DEFAULT_SAVE_AEC 0
 #define DEFAULT_AUTOLOADED FALSE
@@ -1359,7 +1361,9 @@ int pa__init(pa_module*m) {
     pa_assert(sink_master);
 
     source_ss = source_master->sample_spec;
-    source_map = source_master->channel_map;
+    source_ss.rate = DEFAULT_RATE;
+    source_ss.channels = DEFAULT_CHANNELS;
+    pa_channel_map_init_auto(&source_map, source_ss.channels, PA_CHANNEL_MAP_DEFAULT);
     if (pa_modargs_get_sample_spec_and_channel_map(ma, &source_ss, &source_map, PA_CHANNEL_MAP_DEFAULT) < 0) {
         pa_log("Invalid sample format specification or channel map");
         goto fail;