X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=audio_mixer.h;h=855295dcd60f0bf207f435c75484a763eba77b89;hb=e4c99b681aceb0d960f1d56acc9dafc83643854b;hp=e5922674f1245382b2a0dd872ca6291b437d6def;hpb=b590a9a091974607517a9f872e28cbfa65014e2a;p=nageru

diff --git a/audio_mixer.h b/audio_mixer.h
index e592267..855295d 100644
--- a/audio_mixer.h
+++ b/audio_mixer.h
@@ -93,6 +93,13 @@ public:
 	bool add_audio(DeviceSpec device_spec, const uint8_t *data, unsigned num_samples, bmusb::AudioFormat audio_format, int64_t frame_length);
 	bool add_silence(DeviceSpec device_spec, unsigned samples_per_frame, unsigned num_frames, int64_t frame_length);
 
+	// If a given device is offline for whatever reason and cannot deliver audio
+	// (by means of add_audio() or add_silence()), you can call put it in silence mode,
+	// where it will be taken to only output silence. Note that when taking it _out_
+	// of silence mode, the resampler will be reset, so that old audio will not
+	// affect it. Same true/false behavior as add_audio().
+	bool silence_card(DeviceSpec device_spec, bool silence);
+
 	std::vector<float> get_output(double pts, unsigned num_samples, ResamplingQueue::RateAdjustmentPolicy rate_adjustment_policy);
 
 	void set_fader_volume(unsigned bus_index, float level_db) { fader_volume_db[bus_index] = level_db; }
@@ -102,6 +109,12 @@ public:
 	// or every card will be held forever.
 	std::map<DeviceSpec, DeviceInfo> get_devices();
 
+	// See comments on ALSAPool::get_card_state().
+	ALSAPool::Device::State get_alsa_card_state(unsigned index)
+	{
+		return alsa_pool.get_card_state(index);
+	}
+
 	void set_name(DeviceSpec device_spec, const std::string &name);
 
 	void set_input_mapping(const InputMapping &input_mapping);
@@ -257,6 +270,7 @@ private:
 		unsigned capture_frequency = OUTPUT_FREQUENCY;
 		// Which channels we consider interesting (ie., are part of some input_mapping).
 		std::set<unsigned> interesting_channels;
+		bool silenced = false;
 	};
 
 	const AudioDevice *find_audio_device(DeviceSpec device_spec) const