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module-echo-cancel: Use fraction as play delay

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Change from ms to fraction for play delay to increase precision in delay
This commit is contained in:
Joakim Olsson 2022-03-16 11:02:52 +01:00
parent c66bb65c7a
commit 90eec9320a
1 changed files with 21 additions and 5 deletions
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26
src/modules/module-echo-cancel.c
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@ -139,7 +139,7 @@ static const struct spa_dict_item module_props[] = {
"[ audio.channels=<number of channels> ] "
"[ audio.position=<channel map> ] "
"[ buffer.max_size=<max buffer size in ms> ] "
"[ buffer.play_delay=<play delay in ms> ] "
"[ buffer.play_delay=<delay as fraction> ] "
"[ library.name =<library name> ] "
"[ aec.args=<aec arguments> ] "
"[ source.props=<properties> ] "
@ -731,7 +731,7 @@ static int setup_streams(struct impl *impl)
return res;
impl->rec_ringsize = sizeof(float) * impl->max_buffer_size * impl->info.rate / 1000;
impl->play_ringsize = sizeof(float) * (impl->max_buffer_size + impl->buffer_delay) * impl->info.rate / 1000;
impl->play_ringsize = sizeof(float) * ((impl->max_buffer_size * impl->info.rate / 1000) + impl->buffer_delay);
impl->out_ringsize = sizeof(float) * impl->max_buffer_size * impl->info.rate / 1000;
for (i = 0; i < impl->info.channels; i++) {
impl->rec_buffer[i] = malloc(impl->rec_ringsize);
@ -744,9 +744,9 @@ static int setup_streams(struct impl *impl)
spa_ringbuffer_init(&impl->out_ring);
spa_ringbuffer_get_write_index(&impl->play_ring, &index);
spa_ringbuffer_write_update(&impl->play_ring, index + (sizeof(float) * (impl->buffer_delay) * impl->info.rate / 1000));
spa_ringbuffer_write_update(&impl->play_ring, index + (sizeof(float) * (impl->buffer_delay)));
spa_ringbuffer_get_read_index(&impl->play_ring, &index);
spa_ringbuffer_read_update(&impl->play_ring, index + (sizeof(float) * (impl->buffer_delay) * impl->info.rate / 1000));
spa_ringbuffer_read_update(&impl->play_ring, index + (sizeof(float) * (impl->buffer_delay)));
return 0;
}
@ -1054,7 +1054,23 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
copy_props(impl, props, PW_KEY_NODE_LATENCY);
impl->max_buffer_size = pw_properties_get_uint32(props,"buffer.max_size", MAX_BUFSIZE_MS);
impl->buffer_delay = pw_properties_get_uint32(props,"buffer.play_delay", DELAY_MS);
if ((str = pw_properties_get(props, "buffer.play_delay")) != NULL) {
int req_num, req_denom;
if (sscanf(str, "%u/%u", &req_num, &req_denom) == 2) {
if (req_denom != 0) {
impl->buffer_delay = (impl->info.rate*req_num)/req_denom;
} else {
impl->buffer_delay = DELAY_MS * impl->info.rate / 1000;
pw_log_warn("Sample rate for buffer.play_delay is 0 using default");
}
} else {
impl->buffer_delay = DELAY_MS * impl->info.rate / 1000;
pw_log_warn("Wrong value/format for buffer.play_delay using default");
}
} else {
impl->buffer_delay = DELAY_MS * impl->info.rate / 1000;
}
pw_properties_free(props);