system/dev/audio/usb-audio/usb-audio.h

// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#pragma once

#include <ddk/device.h>
#include <ddk/usb/usb.h>
#include <zircon/compiler.h>
#include <zircon/hw/usb.h>
#include <zircon/hw/usb/audio.h>

#if __cplusplus
#include <fbl/array.h>
#endif  // __cplusplus

__BEGIN_CDECLS

zx_status_t usb_midi_sink_create(zx_device_t* device, usb_protocol_t* usb, int index,
                                 const usb_interface_descriptor_t* intf,
                                 const usb_endpoint_descriptor_t* ep,
                                 const size_t req_size);

zx_status_t usb_midi_source_create(zx_device_t* device, usb_protocol_t* usb, int index,
                                   const usb_interface_descriptor_t* intf,
                                   const usb_endpoint_descriptor_t* ep,
                                   const size_t req_size);

__END_CDECLS

#if __cplusplus
namespace audio {
namespace usb {

enum class Direction { Unknown, Input, Output };
enum class EndpointSyncType : uint8_t {
    None     = USB_ENDPOINT_NO_SYNCHRONIZATION,
    Async    = USB_ENDPOINT_ASYNCHRONOUS,
    Adaptive = USB_ENDPOINT_ADAPTIVE,
    Sync     = USB_ENDPOINT_SYNCHRONOUS,
};

fbl::Array<uint8_t> FetchStringDescriptor(const usb_protocol_t& usb,
                                          uint8_t desc_id,
                                          uint16_t lang_id = 0,
                                          uint16_t* out_lang_id = nullptr);

}  // namespace usb
}  // namespace audio
#endif  // __cplusplus