1 files changed, 193 insertions, 0 deletions
diff --git a/src/class/midi/midi2_device.h b/src/class/midi/midi2_device.h
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+++ b/src/class/midi/midi2_device.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_DEVICE_H_
+#define TUSB_MIDI2_DEVICE_H_
+
+#include "class/audio/audio.h"
+#include "midi.h"
+
+//--------------------------------------------------------------------+
+// Class Driver Configuration
+//--------------------------------------------------------------------+
+
+// Config defaults are in tusb_option.h:
+//   CFG_TUD_MIDI2_RX_EPSIZE, CFG_TUD_MIDI2_TX_EPSIZE,
+//   CFG_TUD_MIDI2_RX_BUFSIZE, CFG_TUD_MIDI2_TX_BUFSIZE,
+//   CFG_TUD_MIDI2_NUM_GROUPS, CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS,
+//   CFG_TUD_MIDI2_EP_NAME, CFG_TUD_MIDI2_PRODUCT_ID
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// Class Driver Configuration
+//--------------------------------------------------------------------+
+
+#ifndef CFG_TUD_MIDI2_TX_EPSIZE
+  #define CFG_TUD_MIDI2_TX_EPSIZE   TUD_EPSIZE_BULK_MAX
+#endif
+
+#ifndef CFG_TUD_MIDI2_RX_EPSIZE
+  #define CFG_TUD_MIDI2_RX_EPSIZE   TUD_EPSIZE_BULK_MAX
+#endif
+
+#ifndef CFG_TUD_MIDI2_TX_BUFSIZE
+  #define CFG_TUD_MIDI2_TX_BUFSIZE  CFG_TUD_MIDI2_TX_EPSIZE
+#endif
+
+#ifndef CFG_TUD_MIDI2_RX_BUFSIZE
+  #define CFG_TUD_MIDI2_RX_BUFSIZE  CFG_TUD_MIDI2_RX_EPSIZE
+#endif
+
+#ifndef CFG_TUD_MIDI2_NUM_GROUPS
+  #define CFG_TUD_MIDI2_NUM_GROUPS  1
+#endif
+
+#ifndef CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS
+  #define CFG_TUD_MIDI2_NUM_FUNCTION_BLOCKS 1
+#endif
+
+#ifndef CFG_TUD_MIDI2_EP_NAME
+  #define CFG_TUD_MIDI2_EP_NAME     "TinyUSB MIDI 2.0"
+#endif
+
+#ifndef CFG_TUD_MIDI2_PRODUCT_ID
+  #define CFG_TUD_MIDI2_PRODUCT_ID  "TinyUSB-MIDI2"
+#endif
+
+// String descriptor index for the Group Terminal Block (iBlockItem, Table 5-6).
+// 0 = no string descriptor (default, spec-allowed).
+#ifndef CFG_TUD_MIDI2_BLOCK_STRIDX
+  #define CFG_TUD_MIDI2_BLOCK_STRIDX 0
+#endif
+
+//--------------------------------------------------------------------+
+// MIDI Protocol Values (returned by tud_midi2_n_protocol)
+//--------------------------------------------------------------------+
+
+// Per USB-MIDI 2.0 spec, UMP Stream Configuration messages.
+enum {
+  MIDI_PROTOCOL_MIDI1 = 0x01,
+  MIDI_PROTOCOL_MIDI2 = 0x02,
+};
+
+//--------------------------------------------------------------------+
+// Application Callback API (weak, optional)
+//--------------------------------------------------------------------+
+void tud_midi2_rx_cb(uint8_t itf);
+void tud_midi2_set_itf_cb(uint8_t itf, uint8_t alt);
+bool tud_midi2_get_req_itf_cb(uint8_t rhport, const tusb_control_request_t* request);
+
+// Per-interface UMP Stream config (override for per-itf values).
+uint8_t     tud_midi2_num_groups_cb(uint8_t itf);
+uint8_t     tud_midi2_num_function_blocks_cb(uint8_t itf);
+const char* tud_midi2_ep_name_cb(uint8_t itf);
+const char* tud_midi2_product_id_cb(uint8_t itf);
+
+//--------------------------------------------------------------------+
+// Application API (Multiple Interfaces)
+//--------------------------------------------------------------------+
+
+bool     tud_midi2_n_mounted(uint8_t itf);
+uint32_t tud_midi2_n_available(uint8_t itf);
+uint8_t  tud_midi2_n_alt_setting(uint8_t itf);
+bool     tud_midi2_n_negotiated(uint8_t itf);
+uint8_t  tud_midi2_n_protocol(uint8_t itf);
+
+// 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
+// tud_midi2_rx_cb callback. Leaving words in the FIFO across callbacks can
+// prevent subsequent bulk OUT transfers from landing.
+uint32_t tud_midi2_n_ump_read(uint8_t itf, uint32_t* words, uint32_t max_words);
+uint32_t tud_midi2_n_ump_write(uint8_t itf, const uint32_t* words, uint32_t count);
+
+uint32_t tud_midi2_n_packet_read(uint8_t itf, uint8_t packets[], uint32_t max_packets);
+uint32_t tud_midi2_n_packet_write(uint8_t itf, const uint8_t packets[], uint32_t count);
+
+//--------------------------------------------------------------------+
+// Application API (Single Interface)
+//--------------------------------------------------------------------+
+TU_ATTR_ALWAYS_INLINE static inline bool tud_midi2_mounted(void) {
+  return tud_midi2_n_mounted(0);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_midi2_available(void) {
+  return tud_midi2_n_available(0);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint8_t tud_midi2_alt_setting(void) {
+  return tud_midi2_n_alt_setting(0);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline bool tud_midi2_negotiated(void) {
+  return tud_midi2_n_negotiated(0);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint8_t tud_midi2_protocol(void) {
+  return tud_midi2_n_protocol(0);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint32_t
+tud_midi2_ump_read(uint32_t* words, uint32_t max_words) {
+  return tud_midi2_n_ump_read(0, words, max_words);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint32_t
+tud_midi2_ump_write(const uint32_t* words, uint32_t count) {
+  return tud_midi2_n_ump_write(0, words, count);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint32_t
+tud_midi2_packet_read(uint8_t packets[], uint32_t max_packets) {
+  return tud_midi2_n_packet_read(0, packets, max_packets);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline uint32_t
+tud_midi2_packet_write(const uint8_t packets[], uint32_t count) {
+  return tud_midi2_n_packet_write(0, packets, count);
+}
+
+//--------------------------------------------------------------------+
+// Internal Class Driver API
+//--------------------------------------------------------------------+
+void     midi2d_init(void);
+bool     midi2d_deinit(void);
+void     midi2d_reset(uint8_t rhport);
+uint16_t midi2d_open(uint8_t rhport, const tusb_desc_interface_t* itf_desc, uint16_t max_len);
+bool     midi2d_control_xfer_cb(uint8_t rhport, uint8_t stage, const tusb_control_request_t* request);
+bool     midi2d_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif