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Allow echo-cancel to select larger buffer sizes

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KangJing Huang (Chaserhkj) 2021-10-19 11:39:46 -04:00 • committed by Kangjing "Chaser" Huang
parent 002566ae83
commit 2bfc03f43c
2 changed files with 60 additions and 20 deletions
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34
src/modules/module-echo-cancel.c
View file

@ -614,7 +614,9 @@ static int setup_streams(struct impl *impl)
pw_properties_set(props, PW_KEY_NODE_GROUP, str);
if ((str = pw_properties_get(impl->source_props, PW_KEY_NODE_LINK_GROUP)) != NULL)
pw_properties_set(props, PW_KEY_NODE_LINK_GROUP, str);
if (impl->aec_info->latency)
if ((str = pw_properties_get(impl->source_props, PW_KEY_NODE_LATENCY)) != NULL)
pw_properties_set(props, PW_KEY_NODE_LATENCY, str);
else if (impl->aec_info->latency)
pw_properties_set(props, PW_KEY_NODE_LATENCY, impl->aec_info->latency);
impl->capture = pw_stream_new(impl->core,
@ -645,7 +647,9 @@ static int setup_streams(struct impl *impl)
pw_properties_set(props, PW_KEY_NODE_GROUP, str);
if ((str = pw_properties_get(impl->sink_props, PW_KEY_NODE_LINK_GROUP)) != NULL)
pw_properties_set(props, PW_KEY_NODE_LINK_GROUP, str);
if (impl->aec_info->latency)
if ((str = pw_properties_get(impl->sink_props, PW_KEY_NODE_LATENCY)) != NULL)
pw_properties_set(props, PW_KEY_NODE_LATENCY, str);
else if (impl->aec_info->latency)
pw_properties_set(props, PW_KEY_NODE_LATENCY, impl->aec_info->latency);
impl->playback = pw_stream_new(impl->core,
@ -946,13 +950,31 @@ int pipewire__module_init(struct pw_impl_module *module, const char *args)
pw_properties_free(aec_props);
if (impl->aec_info->latency) {
unsigned int num, denom;
pw_log_info("Setting node latency to %s", impl->aec_info->latency);
pw_properties_set(props, PW_KEY_NODE_LATENCY, impl->aec_info->latency);
unsigned int num, denom, req_num, req_denom;
unsigned int factor = 0;
unsigned int new_num = 0;
sscanf(impl->aec_info->latency, "%u/%u", &num, &denom);
if ((str = pw_properties_get(props, PW_KEY_NODE_LATENCY)) != NULL) {
sscanf(str, "%u/%u", &req_num, &req_denom);
factor = (req_num * denom) / (req_denom * num);
new_num = req_num / factor * factor;
}
if (factor == 0 || new_num == 0) {
pw_log_info("Setting node latency to %s", impl->aec_info->latency);
pw_properties_set(props, PW_KEY_NODE_LATENCY, impl->aec_info->latency);
impl->aec_blocksize = sizeof(float) * impl->info.rate * num / denom;
} else {
char* new_latency_str = (char*)calloc(strlen(str), sizeof(char));
sprintf(new_latency_str, "%u/%u", new_num, req_denom);
pw_log_info("Setting node latency to %s", new_latency_str);
pw_properties_set(props, PW_KEY_NODE_LATENCY, new_latency_str);
impl->aec_blocksize = sizeof(float) * impl->info.rate * num / denom * factor;
free(new_latency_str);
}
} else {
/* Implementation doesn't care about the block size */
impl->aec_blocksize = 0;

26
src/modules/module-echo-cancel/aec-webrtc.cpp
View file

@ -34,6 +34,9 @@
struct impl {
webrtc::AudioProcessing *apm = NULL;
spa_audio_info_raw info;
float** play_buffer;
float** rec_buffer;
float** out_buffer;
};
static void *webrtc_create(const struct pw_properties *args, const spa_audio_info_raw *info)
@ -72,6 +75,10 @@ static void *webrtc_create(const struct pw_properties *args, const spa_audio_inf
impl = (struct impl *)calloc(1, sizeof(struct impl));
impl->info = *info;
impl->play_buffer = (float **)calloc(info->channels, sizeof(float*));
impl->rec_buffer = (float **)calloc(info->channels, sizeof(float*));
impl->out_buffer = (float **)calloc(info->channels, sizeof(float*));
impl->apm = apm;
return impl;
@ -88,6 +95,9 @@ static void webrtc_destroy(void *ec)
struct impl *impl = (struct impl*)ec;
delete impl->apm;
free(impl->play_buffer);
free(impl->rec_buffer);
free(impl->out_buffer);
free(impl);
}
@ -96,26 +106,34 @@ static int webrtc_run(void *ec, const float *rec[], const float *play[], float *
struct impl *impl = (struct impl*)ec;
webrtc::StreamConfig config =
webrtc::StreamConfig(impl->info.rate, impl->info.channels, false);
unsigned int num_blocks = n_samples * 1000 / impl->info.rate / 10;
if (n_samples * 1000 / impl->info.rate != 10) {
pw_log_error("Buffers must be 10ms in length (currently %u samples)", n_samples);
if (n_samples * 1000 / impl->info.rate % 10 != 0) {
pw_log_error("Buffers must be multiples of 10ms in length (currently %u samples)", n_samples);
return -1;
}
for (size_t i = 0; i < num_blocks; i ++) {
for (size_t j = 0; j < impl->info.channels; j++) {
impl->play_buffer[j] = (float*)play[j] + config.num_frames() * i;
impl->rec_buffer[j] = (float*)rec[j] + config.num_frames() * i;
impl->out_buffer[j] = out[j] + config.num_frames() * i;
}
/* FIXME: ProcessReverseStream may change the playback buffer, in which
* case we should use that, if we ever expose the intelligibility
* enhancer */
if (impl->apm->ProcessReverseStream(play, config, config, (float**)play) !=
if (impl->apm->ProcessReverseStream(impl->play_buffer, config, config, impl->play_buffer) !=
webrtc::AudioProcessing::kNoError) {
pw_log_error("Processing reverse stream failed");
}
impl->apm->set_stream_delay_ms(0);
if (impl->apm->ProcessStream(rec, config, config, out) !=
if (impl->apm->ProcessStream(impl->rec_buffer, config, config, impl->out_buffer) !=
webrtc::AudioProcessing::kNoError) {
pw_log_error("Processing stream failed");
}
}
return 0;
}