1 /**************************************************************************/
2 /*                                                                        */
3 /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
4 /*                                                                        */
5 /*       This software is licensed under the Microsoft Software License   */
6 /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
7 /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
8 /*       and in the root directory of this software.                      */
9 /*                                                                        */
10 /**************************************************************************/
11 
12 
13 /**************************************************************************/
14 /**************************************************************************/
15 /**                                                                       */
16 /** USBX Component                                                        */
17 /**                                                                       */
18 /**   Audio Class                                                         */
19 /**                                                                       */
20 /**************************************************************************/
21 /**************************************************************************/
22 
23 
24 /* Include necessary system files.  */
25 
26 #define UX_SOURCE_CODE
27 
28 #include "ux_api.h"
29 #include "ux_host_class_audio.h"
30 #include "ux_host_stack.h"
31 
32 
33 #if defined(UX_HOST_CLASS_AUDIO_FEEDBACK_SUPPORT)
34 /**************************************************************************/
35 /*                                                                        */
36 /*  FUNCTION                                               RELEASE        */
37 /*                                                                        */
38 /*    _ux_host_class_audio_feedback_transfer_completed    PORTABLE C      */
39 /*                                                           6.1.12       */
40 /*  AUTHOR                                                                */
41 /*                                                                        */
42 /*    Chaoqiong Xiao, Microsoft Corporation                               */
43 /*                                                                        */
44 /*  DESCRIPTION                                                           */
45 /*                                                                        */
46 /*    This function receives a completion call back on a isoch transfer   */
47 /*    request.                                                            */
48 /*                                                                        */
49 /*  INPUT                                                                 */
50 /*                                                                        */
51 /*    transfer_request                      Pointer to transfer request   */
52 /*                                                                        */
53 /*  OUTPUT                                                                */
54 /*                                                                        */
55 /*    None                                                                */
56 /*                                                                        */
57 /*  CALLS                                                                 */
58 /*                                                                        */
59 /*                                                                        */
60 /*  CALLED BY                                                             */
61 /*                                                                        */
62 /*    HCD                                                                 */
63 /*                                                                        */
64 /*  RELEASE HISTORY                                                       */
65 /*                                                                        */
66 /*    DATE              NAME                      DESCRIPTION             */
67 /*                                                                        */
68 /*  07-29-2022     Chaoqiong Xiao           Initial Version 6.1.12        */
69 /*                                                                        */
70 /**************************************************************************/
_ux_host_class_audio_feedback_transfer_completed(UX_TRANSFER * transfer_request)71 VOID  _ux_host_class_audio_feedback_transfer_completed(UX_TRANSFER *transfer_request)
72 {
73 UX_HOST_CLASS_AUDIO         *audio;
74 UX_ENDPOINT                 *endpoint;
75 ULONG                       endpoint_dir;
76 
77     /* Check status.  */
78     if (transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
79         return;
80 
81     /* Sync with feedback buffer.  */
82     audio = (UX_HOST_CLASS_AUDIO *) transfer_request -> ux_transfer_request_class_instance;
83     endpoint = transfer_request -> ux_transfer_request_endpoint;
84     endpoint_dir = endpoint -> ux_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION;
85     if (endpoint_dir == UX_ENDPOINT_IN)
86     {
87         _ux_utility_memory_copy(audio -> ux_host_class_audio_feedback_buffer,
88                                 transfer_request -> ux_transfer_request_data_pointer,
89                                 sizeof(audio -> ux_host_class_audio_feedback_buffer)); /* Use case of memcpy is verified. */
90     }
91 
92     /* Issue another request again.  */
93     _ux_host_stack_transfer_request(transfer_request);
94 }
95 #endif
96