add zox ngc audio packet parsing and events

solanaceae/zox/ngc.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstdint>
 #include <solanaceae/toxcore/tox_event_interface.hpp>
 
 #include <solanaceae/util/event_provider.hpp>
@@ -10,8 +11,12 @@
 // fwd
 //struct ToxI;
 
-// zoff ngc history sync (draft1?)
-// https://gist.github.com/zoff99/81917ddb2e55b2ce602cac4772a7b68c
+// zoff ngc history sync
+// https://github.com/zoff99/c-toxcore/blob/zoff99/zoxcore_local_fork/docs/ngc_group_history_sync.md
+// (old) https://gist.github.com/zoff99/81917ddb2e55b2ce602cac4772a7b68c
+
+// zoff ngc audio
+// https://github.com/zoff99/c-toxcore/blob/zoff99/zoxcore_local_fork/docs/ngc_audio.md
 
 namespace Events {
 
@@ -38,6 +43,17 @@ namespace Events {
 		std::string_view message_text;
 	};
 
+	struct ZoxNGC_ngca {
+		uint32_t group_number {0u};
+		uint32_t peer_number {0u};
+
+		bool _private {true};
+
+		uint8_t audio_channels {1u};
+		uint8_t sampling_freq {48u}; // for 48kHz
+		std::vector<uint8_t> data; // 1-1362 bytes of opus encoded audio
+	};
+
 } // Events
 
 enum class ZoxNGC_Event : uint32_t {
@@ -70,6 +86,11 @@ enum class ZoxNGC_Event : uint32_t {
 
 	// ...
 
+	v0x01_id0x31,
+	ngca = v0x01_id0x31,
+
+	// ...
+
 	// v0x02_id0x01
 
 	MAX
@@ -81,6 +102,7 @@ struct ZoxNGCEventI {
 	using enumType = ZoxNGC_Event;
 	virtual bool onEvent(const Events::ZoxNGC_ngch_request&) { return false; }
 	virtual bool onEvent(const Events::ZoxNGC_ngch_syncmsg&) { return false; }
+	virtual bool onEvent(const Events::ZoxNGC_ngca&) { return false; }
 };
 
 using ZoxNGCEventProviderI = EventProviderI<ZoxNGCEventI>;
@@ -114,6 +136,12 @@ class ZoxNGCEventProvider : public ToxEventI, public ZoxNGCEventProviderI {
 			bool _private
 		);
 
+		bool parse_ngca(
+			uint32_t group_number, uint32_t peer_number,
+			const uint8_t* data, size_t data_size,
+			bool _private
+		);
+
 	protected:
 		bool onToxEvent(const Tox_Event_Group_Custom_Packet* e) override;
 		bool onToxEvent(const Tox_Event_Group_Custom_Private_Packet* e) override;