OHMIDI

Overview

This module provides C API definitions for the Musical Instrument Digital Interface (MIDI) module. The APIs are used for MIDI device management and data transmission.

Since: 24

Files

Name	Description
native_midi.h	Declares MIDI-related APIs. MIDI is a technical standard for communication between electronic musical instruments, computers, and other devices. The APIs in this file are used for managing MIDI devices, sending and receiving MIDI messages, and monitoring device status. The typical process for connecting a MIDI device using OHMIDI is as follows: 1. Create a client: Initialize the MIDI client context, and register the device hot swap callback and service exception callback.2. Discover devices and ports: Obtain the list of currently connected devices and query the port capabilities of the devices.3. Open a device: Establish a device connection session.4. Enable ports: Enable the ports based on the port direction (input/output).5. Perform data exchange: * Receiving: Use the callback function to receive MIDI data in the Universal MIDI Packet (UMP) format. * Sending: Construct a UMP data packet and send it through the output port.6. Release resources: Close the port and device and destroy the client after use.
native_midi_base.h	Declares the basic data structure of the MIDI module. The file defines the basic types, enumerations, structs, and callback functions of the MIDI APIs.

Name

Description

native_midi.h

Declares MIDI-related APIs. MIDI is a technical standard for communication between electronic musical instruments, computers, and other devices.
The APIs in this file are used for managing MIDI devices, sending and receiving MIDI messages, and monitoring device status.
The typical process for connecting a MIDI device using OHMIDI is as follows: 1. Create a client: Initialize the MIDI client context, and register the device hot swap callback and service exception callback.2. Discover devices and ports: Obtain the list of currently connected devices and query the port capabilities of the devices.3. Open a device: Establish a device connection session.4. Enable ports: Enable the ports based on the port direction (input/output).5. Perform data exchange: * Receiving: Use the callback function to receive MIDI data in the Universal MIDI Packet (UMP) format. * Sending: Construct a UMP data packet and send it through the output port.6. Release resources: Close the port and device and destroy the client after use.

native_midi_base.h

Declares the basic data structure of the MIDI module. The file defines the basic types, enumerations, structs, and callback functions of the MIDI APIs.