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 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _ux_host_class_audio_feedback_get PORTABLE C */
38 /* 6.1.12 */
39 /* AUTHOR */
40 /* */
41 /* Chaoqiong Xiao, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function copies packed feedback data to given buffer. */
46 /* Note high speed data size is 4 and full speed data size is 3 bytes. */
47 /* */
48 /* INPUT */
49 /* */
50 /* audio Pointer to audio class */
51 /* feedback Pointer to buffer to fill */
52 /* packed feedback data */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* Completion Status */
57 /* */
58 /* CALLS */
59 /* */
60 /* */
61 /* CALLED BY */
62 /* */
63 /* Application */
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_feedback_get(UX_HOST_CLASS_AUDIO * audio,UCHAR * feedback)72 UINT _ux_host_class_audio_feedback_get(UX_HOST_CLASS_AUDIO *audio, UCHAR *feedback)
73 {
74 #if !defined(UX_HOST_CLASS_AUDIO_FEEDBACK_SUPPORT)
75 UX_PARAMETER_NOT_USED(audio);
76 UX_PARAMETER_NOT_USED(feedback);
77 return(UX_FUNCTION_NOT_SUPPORTED);
78 #else
79
80 /* Ensure the instance is valid. */
81 if (_ux_host_stack_class_instance_verify(_ux_system_host_class_audio_name, (VOID *) audio) != UX_SUCCESS)
82 {
83
84 /* Error trap. */
85 _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_HOST_CLASS_INSTANCE_UNKNOWN);
86
87 /* If trace is enabled, insert this event into the trace buffer. */
88 UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_HOST_CLASS_INSTANCE_UNKNOWN, audio, 0, 0, UX_TRACE_ERRORS, 0, 0)
89
90 return(UX_HOST_CLASS_INSTANCE_UNKNOWN);
91 }
92
93 feedback[0] = audio -> ux_host_class_audio_feedback_buffer[0];
94 feedback[1] = audio -> ux_host_class_audio_feedback_buffer[1];
95 feedback[2] = audio -> ux_host_class_audio_feedback_buffer[2];
96 if (_ux_host_class_audio_speed_get(audio) == UX_HIGH_SPEED_DEVICE)
97 feedback[3] = audio -> ux_host_class_audio_feedback_buffer[3];
98 return(UX_SUCCESS);
99 #endif
100 }
101
