Rack/include/bridgeprotocol.hpp

#pragma once
#include <stdint.h>


namespace rack {


/** Driver ID in AudioIO and MidiIO */
const int BRIDGE_DRIVER = -12512;
const char* const BRIDGE_HOST = "127.0.0.1";
const int BRIDGE_PORT = 12512;
const int BRIDGE_NUM_PORTS = 16;
/** Number of VST/AU automation parameters */
const int BRIDGE_NUM_PARAMS = 16;
/** An arbitrary number which prevents connection from other protocols (like WebSockets) and old Bridge versions */
const uint32_t BRIDGE_HELLO = 0xff00fefd;
const int BRIDGE_INPUTS = 8;
const int BRIDGE_OUTPUTS = 8;


/** All commands are called from the client and served by the server
send
- uint8_t cmd
*/
enum BridgeCommand {
	NO_COMMAND = 0,
	/** Requests the server to shut down the client */
	QUIT_COMMAND,
	/** Sets the port
	send
	- uint8_t port
	*/
	PORT_SET_COMMAND,
	/** Sends a 3-byte MIDI command
	send
	- uint8_t msg[3]
	*/
	MIDI_MESSAGE_COMMAND,
	/** Sets the audio sample rate
	send
	- uint32_t sampleRate
	*/
	AUDIO_SAMPLE_RATE_SET_COMMAND,
	/** Sends and receives an audio buffer
	send
	- uint32_t frames
	- float input[BRIDGE_INPUTS * frames]
	recv
	- float output[BRIDGE_OUTPUTS * frames]
	*/
	AUDIO_PROCESS_COMMAND,
	NUM_COMMANDS
};


} // namespace rack