#include "alsa_input.h"
#include "audio_mixer.h"
#include "defs.h"
+#include "state.pb.h"
#include <sys/inotify.h>
+#include <algorithm>
#include <functional>
#include <unordered_map>
string info = snd_pcm_info_get_name(pcm_info);
unsigned internal_dev_index;
+ string display_name;
{
lock_guard<mutex> lock(mu);
internal_dev_index = find_free_device_index(name, info, num_channels, address);
devices[internal_dev_index].info = info;
devices[internal_dev_index].num_channels = num_channels;
// Note: Purposefully does not overwrite held.
+
+ display_name = devices[internal_dev_index].display_name();
}
fprintf(stderr, "%s: Probed successfully.\n", address);
reset_device(internal_dev_index); // Restarts it if it is held (ie., we just replaced a dead card).
+ DeviceSpec spec{InputSourceType::ALSA_INPUT, internal_dev_index};
+ global_audio_mixer->set_display_name(spec, display_name);
+ global_audio_mixer->trigger_state_changed_callback();
+
return ALSAPool::ProbeResult::SUCCESS;
}
bool silence = (state != ALSAPool::Device::State::RUNNING);
while (!global_audio_mixer->silence_card(spec, silence))
;
+ global_audio_mixer->trigger_state_changed_callback();
}
unsigned ALSAPool::find_free_device_index(const string &name, const string &info, unsigned num_channels, const string &address)
return devices.size() - 1;
}
+unsigned ALSAPool::create_dead_card(const string &name, const string &info, unsigned num_channels)
+{
+ lock_guard<mutex> lock(mu);
+
+ // See if there are any empty slots. If not, insert one at the end.
+ vector<Device>::iterator free_device =
+ find_if(devices.begin(), devices.end(),
+ [](const Device &device) { return device.state == Device::State::EMPTY; });
+ if (free_device == devices.end()) {
+ devices.push_back(Device());
+ inputs.emplace_back(nullptr);
+ free_device = devices.end() - 1;
+ }
+
+ free_device->state = Device::State::DEAD;
+ free_device->name = name;
+ free_device->info = info;
+ free_device->num_channels = num_channels;
+ free_device->held = true;
+
+ return distance(devices.begin(), free_device);
+}
+
+void ALSAPool::serialize_device(unsigned index, DeviceSpecProto *serialized)
+{
+ lock_guard<mutex> lock(mu);
+ assert(index < devices.size());
+ assert(devices[index].held);
+ serialized->set_type(DeviceSpecProto::ALSA_INPUT);
+ serialized->set_index(index);
+ serialized->set_display_name(devices[index].display_name());
+ serialized->set_alsa_name(devices[index].name);
+ serialized->set_alsa_info(devices[index].info);
+ serialized->set_num_channels(devices[index].num_channels);
+ serialized->set_address(devices[index].address);
+}
+
void ALSAPool::free_card(unsigned index)
{
DeviceSpec spec{InputSourceType::ALSA_INPUT, index};
while (!global_audio_mixer->silence_card(spec, true))
;
- lock_guard<mutex> lock(mu);
- if (devices[index].held) {
- devices[index].state = Device::State::DEAD;
- } else {
- devices[index].state = Device::State::EMPTY;
- inputs[index].reset();
- }
- while (!devices.empty() && devices.back().state == Device::State::EMPTY) {
- devices.pop_back();
- inputs.pop_back();
+ {
+ lock_guard<mutex> lock(mu);
+ if (devices[index].held) {
+ devices[index].state = Device::State::DEAD;
+ } else {
+ devices[index].state = Device::State::EMPTY;
+ inputs[index].reset();
+ }
+ while (!devices.empty() && devices.back().state == Device::State::EMPTY) {
+ devices.pop_back();
+ inputs.pop_back();
+ }
}
+
+ global_audio_mixer->trigger_state_changed_callback();
}