1 files changed, 107 insertions, 0 deletions
diff --git a/src/class/midi/midi2_host.h b/src/class/midi/midi2_host.h
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+++ b/src/class/midi/midi2_host.h
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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2026 Saulo Verissimo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef TUSB_MIDI2_HOST_H_
+#define TUSB_MIDI2_HOST_H_
+
+#include "class/audio/audio.h"
+#include "midi.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// Callback Type Definitions
+//--------------------------------------------------------------------+
+
+typedef struct {
+  uint8_t protocol_version;                       // 0 = MIDI 1.0 only, 1 = MIDI 2.0
+  uint8_t bcdMSC_hi, bcdMSC_lo;                   // MIDI version from descriptor
+  uint8_t rx_cable_count;                         // For both alt settings (same for Alt 0 and Alt 1)
+  uint8_t tx_cable_count;
+} tuh_midi2_descriptor_cb_t;
+
+typedef struct {
+  uint8_t daddr;
+  uint8_t bInterfaceNumber;
+  uint8_t protocol_version;                       // 0 = MIDI 1.0, 1 = MIDI 2.0
+  uint8_t alt_setting_active;                     // 0 or 1
+  uint8_t rx_cable_count;
+  uint8_t tx_cable_count;
+} tuh_midi2_mount_cb_t;
+
+//--------------------------------------------------------------------+
+// Application Callback API (weak, optional)
+//--------------------------------------------------------------------+
+
+void tuh_midi2_descriptor_cb(uint8_t idx, const tuh_midi2_descriptor_cb_t *desc_cb_data);
+void tuh_midi2_mount_cb(uint8_t idx, const tuh_midi2_mount_cb_t *mount_cb_data);
+void tuh_midi2_rx_cb(uint8_t idx, uint32_t xferred_bytes);
+void tuh_midi2_tx_cb(uint8_t idx, uint32_t xferred_bytes);
+void tuh_midi2_umount_cb(uint8_t idx);
+
+//--------------------------------------------------------------------+
+// Application API - Query
+//--------------------------------------------------------------------+
+
+bool     tuh_midi2_mounted(uint8_t idx);
+uint8_t  tuh_midi2_get_protocol_version(uint8_t idx);
+uint8_t  tuh_midi2_get_alt_setting_active(uint8_t idx);
+uint8_t  tuh_midi2_get_cable_count(uint8_t idx);
+
+//--------------------------------------------------------------------+
+// Application API - I/O
+//--------------------------------------------------------------------+
+
+// Read up to max_words UMP words from the RX FIFO. Returns the number of
+// words actually read (0 if FIFO is empty).
+//
+// NOTE: this function returns when max_words is reached or when the FIFO is
+// empty, whichever comes first. Applications should invoke it in a loop
+// until it returns 0 to guarantee the RX FIFO is fully drained per
+// tuh_midi2_rx_cb callback. Leaving words in the FIFO across callbacks can
+// prevent subsequent bulk IN transfers from landing.
+uint32_t tuh_midi2_ump_read(uint8_t idx, uint32_t* words, uint32_t max_words);
+uint32_t tuh_midi2_ump_write(uint8_t idx, const uint32_t* words, uint32_t count);
+uint32_t tuh_midi2_write_flush(uint8_t idx);
+
+//--------------------------------------------------------------------+
+// Internal Class Driver API
+//--------------------------------------------------------------------+
+
+bool     midih2_init(void);
+bool     midih2_deinit(void);
+bool     midih2_set_config(uint8_t dev_addr, uint8_t itf_num);
+void     midih2_close(uint8_t dev_addr);
+uint16_t midih2_open(uint8_t rhport, uint8_t dev_addr, const tusb_desc_interface_t *desc_itf, uint16_t max_len);
+bool     midih2_xfer_cb(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif