#include <stdio.h>
#include <endian.h>
#include <cmath>
+#include <limits>
#ifdef __SSE__
#include <immintrin.h>
#endif
set_final_makeup_gain_auto(global_flags.final_makeup_gain_auto);
alsa_pool.init();
- InputMapping new_input_mapping;
if (!global_flags.input_mapping_filename.empty()) {
+ current_mapping_mode = MappingMode::MULTICHANNEL;
+ InputMapping new_input_mapping;
if (!load_input_mapping_from_file(get_devices(),
global_flags.input_mapping_filename,
&new_input_mapping)) {
global_flags.input_mapping_filename.c_str());
exit(1);
}
+ set_input_mapping(new_input_mapping);
} else {
- // Generate a very simple, default input mapping.
- InputMapping::Bus input;
- input.name = "Main";
- input.device.type = InputSourceType::CAPTURE_CARD;
- input.device.index = 0;
- input.source_channel[0] = 0;
- input.source_channel[1] = 1;
-
- new_input_mapping.buses.push_back(input);
+ set_simple_input(/*card_index=*/0);
+ if (global_flags.multichannel_mapping_mode) {
+ current_mapping_mode = MappingMode::MULTICHANNEL;
+ }
}
- set_input_mapping(new_input_mapping);
r128.init(2, OUTPUT_FREQUENCY);
r128.integr_start();
eq_level_db[bus_index][band_index] = settings.eq_level_db[band_index];
}
gain_staging_db[bus_index] = settings.gain_staging_db;
+ last_gain_staging_db[bus_index] = gain_staging_db[bus_index];
level_compressor_enabled[bus_index] = settings.level_compressor_enabled;
compressor_threshold_dbfs[bus_index] = settings.compressor_threshold_dbfs;
compressor_enabled[bus_index] = settings.compressor_enabled;
return ret;
}
+namespace {
+
+void apply_gain(float db, float last_db, vector<float> *samples)
+{
+ if (fabs(db - last_db) < 1e-3) {
+ // Constant over this frame.
+ const float gain = from_db(db);
+ for (size_t i = 0; i < samples->size(); ++i) {
+ (*samples)[i] *= gain;
+ }
+ } else {
+ // We need to do a fade.
+ unsigned num_samples = samples->size() / 2;
+ float gain = from_db(last_db);
+ const float gain_inc = pow(from_db(db - last_db), 1.0 / num_samples);
+ for (size_t i = 0; i < num_samples; ++i) {
+ (*samples)[i * 2 + 0] *= gain;
+ (*samples)[i * 2 + 1] *= gain;
+ gain *= gain_inc;
+ }
+ }
+}
+
+} // namespace
+
vector<float> AudioMixer::get_output(double pts, unsigned num_samples, ResamplingQueue::RateAdjustmentPolicy rate_adjustment_policy)
{
map<DeviceSpec, vector<float>> samples_card;
gain_staging_db[bus_index] = to_db(level_compressor[bus_index]->get_attenuation() * makeup_gain);
} else {
// Just apply the gain we already had.
- float g = from_db(gain_staging_db[bus_index]);
- for (size_t i = 0; i < samples_bus.size(); ++i) {
- samples_bus[i] *= g;
- }
+ float db = gain_staging_db[bus_index];
+ float last_db = last_gain_staging_db[bus_index];
+ apply_gain(db, last_db, &samples_bus);
}
+ last_gain_staging_db[bus_index] = gain_staging_db[bus_index];
#if 0
printf("level=%f (%+5.2f dBFS) attenuation=%f (%+5.2f dB) end_result=%+5.2f dB\n",
assert(samples_bus->size() % 2 == 0);
const unsigned num_samples = samples_bus->size() / 2;
- if (fabs(mid_db - last_mid_db) < 1e-3) {
- // Constant over this frame.
- const float gain = from_db(mid_db);
- for (size_t i = 0; i < samples_bus->size(); ++i) {
- (*samples_bus)[i] *= gain;
- }
- } else {
- // We need to do a fade.
- float gain = from_db(last_mid_db);
- const float gain_inc = pow(from_db(mid_db - last_mid_db), 1.0 / num_samples);
- for (size_t i = 0; i < num_samples; ++i) {
- (*samples_bus)[i * 2 + 0] *= gain;
- (*samples_bus)[i * 2 + 1] *= gain;
- gain *= gain_inc;
- }
- }
+ apply_gain(mid_db, last_mid_db, samples_bus);
apply_filter_fade(&eq[bus_index][EQ_BAND_BASS], samples_bus->data(), num_samples, bass_freq_hz, bass_db - mid_db, last_bass_db - last_mid_db);
apply_filter_fade(&eq[bus_index][EQ_BAND_TREBLE], samples_bus->data(), num_samples, treble_freq_hz, treble_db - mid_db, last_treble_db - last_mid_db);
}
}
+void AudioMixer::set_simple_input(unsigned card_index)
+{
+ InputMapping new_input_mapping;
+ InputMapping::Bus input;
+ input.name = "Main";
+ input.device.type = InputSourceType::CAPTURE_CARD;
+ input.device.index = card_index;
+ input.source_channel[0] = 0;
+ input.source_channel[1] = 1;
+
+ new_input_mapping.buses.push_back(input);
+
+ lock_guard<timed_mutex> lock(audio_mutex);
+ current_mapping_mode = MappingMode::SIMPLE;
+ set_input_mapping_lock_held(new_input_mapping);
+ fader_volume_db[0] = 0.0f;
+}
+
+unsigned AudioMixer::get_simple_input() const
+{
+ lock_guard<timed_mutex> lock(audio_mutex);
+ if (input_mapping.buses.size() == 1 &&
+ input_mapping.buses[0].device.type == InputSourceType::CAPTURE_CARD &&
+ input_mapping.buses[0].source_channel[0] == 0 &&
+ input_mapping.buses[0].source_channel[1] == 1) {
+ return input_mapping.buses[0].device.index;
+ } else {
+ return numeric_limits<unsigned>::max();
+ }
+}
+
void AudioMixer::set_input_mapping(const InputMapping &new_input_mapping)
{
lock_guard<timed_mutex> lock(audio_mutex);
+ set_input_mapping_lock_held(new_input_mapping);
+ current_mapping_mode = MappingMode::MULTICHANNEL;
+}
+AudioMixer::MappingMode AudioMixer::get_mapping_mode() const
+{
+ lock_guard<timed_mutex> lock(audio_mutex);
+ return current_mapping_mode;
+}
+
+void AudioMixer::set_input_mapping_lock_held(const InputMapping &new_input_mapping)
+{
map<DeviceSpec, set<unsigned>> interesting_channels;
for (const InputMapping::Bus &bus : new_input_mapping.buses) {
if (bus.device.type == InputSourceType::CAPTURE_CARD ||
projects / nageru / blobdiff