1 /***************************************************************************
2  * Copyright (c) 2024 Microsoft Corporation
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the MIT License which is available at
6  * https://opensource.org/licenses/MIT.
7  *
8  * SPDX-License-Identifier: MIT
9  **************************************************************************/
10 
11 
12 /**************************************************************************/
13 /**************************************************************************/
14 /**                                                                       */
15 /** USBX Component                                                        */
16 /**                                                                       */
17 /**   Audio Class                                                         */
18 /**                                                                       */
19 /**************************************************************************/
20 /**************************************************************************/
21 
22 
23 /* Include necessary system files.  */
24 
25 #define UX_SOURCE_CODE
26 
27 #include "ux_api.h"
28 #include "ux_host_class_audio.h"
29 #include "ux_host_stack.h"
30 
31 
32 /**************************************************************************/
33 /*                                                                        */
34 /*  FUNCTION                                               RELEASE        */
35 /*                                                                        */
36 /*    _ux_host_class_audio_interrupt_notification         PORTABLE C      */
37 /*                                                           6.1.12       */
38 /*  AUTHOR                                                                */
39 /*                                                                        */
40 /*    Chaoqiong Xiao, Microsoft Corporation                               */
41 /*                                                                        */
42 /*  DESCRIPTION                                                           */
43 /*                                                                        */
44 /*    This function receives a completion callback on a interrupt         */
45 /*    transfer request.                                                   */
46 /*                                                                        */
47 /*  INPUT                                                                 */
48 /*                                                                        */
49 /*    transfer_request                      Pointer to transfer request   */
50 /*                                                                        */
51 /*  OUTPUT                                                                */
52 /*                                                                        */
53 /*    None                                                                */
54 /*                                                                        */
55 /*  CALLS                                                                 */
56 /*                                                                        */
57 /*    (ux_host_class_audio_interrupt_callback)                            */
58 /*                                          App notification callback     */
59 /*    _ux_host_stack_transfer_request       Issue the transfer request    */
60 /*                                                                        */
61 /*  CALLED BY                                                             */
62 /*                                                                        */
63 /*    HCD                                                                 */
64 /*                                                                        */
65 /*  RELEASE HISTORY                                                       */
66 /*                                                                        */
67 /*    DATE              NAME                      DESCRIPTION             */
68 /*                                                                        */
69 /*  07-29-2022     Chaoqiong Xiao           Initial Version 6.1.12        */
70 /*                                                                        */
71 /**************************************************************************/
_ux_host_class_audio_interrupt_notification(UX_TRANSFER * transfer_request)72 VOID  _ux_host_class_audio_interrupt_notification(UX_TRANSFER *transfer_request)
73 {
74 
75 UX_HOST_CLASS_AUDIO_AC *ac;
76 
77     /* Check status.  */
78     if (transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
79         return;
80 
81     /* Get AC instance.  */
82     ac = (UX_HOST_CLASS_AUDIO_AC *)transfer_request -> ux_transfer_request_class_instance;
83 
84     /* Invoke application callback.  */
85     if (ac -> ux_host_class_audio_interrupt_callback)
86     {
87         ac -> ux_host_class_audio_interrupt_callback(ac,
88                         transfer_request -> ux_transfer_request_data_pointer,
89                         transfer_request -> ux_transfer_request_actual_length,
90                         ac -> ux_host_class_audio_interrupt_callback_arg);
91     }
92 
93     /* Issue another request again.  */
94     _ux_host_stack_transfer_request(transfer_request);
95 }
96