Communicate number of channels to the input mapping dialog.

[nageru] / audio_mixer.cpp

diff --git a/audio_mixer.cpp b/audio_mixer.cpp
index 93d59f4cc6f4017d9d43bc5ab45ff09b4710fe9f..b61a3c300009eda219179863617914325517ba1e 100644 (file)
--- a/audio_mixer.cpp
+++ b/audio_mixer.cpp
@@ -252,6 +252,9 @@ vector<float> AudioMixer::get_output(double pts, unsigned num_samples, Resamplin
        lock_guard<mutex> lock(audio_mutex);
 
        // Pick out all the interesting channels from all the cards.
+       // TODO: If the card has been hotswapped, the number of channels
+       // might have changed; if so, we need to do some sort of remapping
+       // to silence.
        for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
                AudioDevice *device = &cards[card_index];
                if (!device->interesting_channels.empty()) {
@@ -396,16 +399,19 @@ vector<float> AudioMixer::get_output(double pts, unsigned num_samples, Resamplin
        return samples_out;
 }
 
-map<DeviceSpec, string> AudioMixer::get_names() const
+map<DeviceSpec, DeviceInfo> AudioMixer::get_devices() const
 {
        lock_guard<mutex> lock(audio_mutex);
-       map<DeviceSpec, string> names;
+       map<DeviceSpec, DeviceInfo> devices;
        for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
                const DeviceSpec spec{ InputSourceType::CAPTURE_CARD, card_index };
                const AudioDevice *device = &cards[card_index];
-               names.insert(make_pair(spec, device->name));
+               DeviceInfo info;
+               info.name = device->name;
+               info.num_channels = 8;  // FIXME: This is wrong for fake cards.
+               devices.insert(make_pair(spec, info));
        }
-       return names;
+       return devices;
 }
 
 void AudioMixer::set_name(DeviceSpec device_spec, const string &name)