/* Terminal Control Selectors */
/* 4.3.2 Class-Specific AC Interface Descriptor */
-struct uac_ac_header_descriptor {
+struct uac_ac_header_descriptor_v1 {
__u8 bLength; /* 8 + n */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* UAC_MS_HEADER */
/* As above, but more useful for defining your own descriptors: */
#define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \
-struct uac_ac_header_descriptor_##n { \
+struct uac_ac_header_descriptor_v1_##n { \
__u8 bLength; \
__u8 bDescriptorType; \
__u8 bDescriptorSubtype; \
#define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206
/* 4.3.2.2 Output Terminal Descriptor */
-struct uac_output_terminal_descriptor {
+struct uac_output_terminal_descriptor_v1 {
__u8 bLength; /* in bytes: 9 */
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
__u8 bDescriptorSubtype; /* OUTPUT_TERMINAL descriptor subtype */
} __attribute__ ((packed))
/* 4.5.2 Class-Specific AS Interface Descriptor */
-struct uac_as_header_descriptor {
+struct uac_as_header_descriptor_v1 {
__u8 bLength; /* in bytes: 7 */
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
__u8 bDescriptorSubtype; /* AS_GENERAL */
#define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3))
+/* Formats - Audio Data Format Type I Codes */
+
+struct uac_format_type_ii_discrete_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bFormatType;
+ __le16 wMaxBitRate;
+ __le16 wSamplesPerFrame;
+ __u8 bSamFreqType;
+ __u8 tSamFreq[][3];
+} __attribute__((packed));
+
/* Formats - A.2 Format Type Codes */
#define UAC_FORMAT_TYPE_UNDEFINED 0x0
#define UAC_FORMAT_TYPE_I 0x1
#define UAC_EP_CS_ATTR_FILL_MAX 0x80
/* A.10.2 Feature Unit Control Selectors */
+
+struct uac_feature_unit_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubtype;
+ __u8 bUnitID;
+ __u8 bSourceID;
+ __u8 bControlSize;
+ __u8 controls[0]; /* variable length */
+} __attribute__((packed));
+
#define UAC_FU_CONTROL_UNDEFINED 0x00
#define UAC_MUTE_CONTROL 0x01
#define UAC_VOLUME_CONTROL 0x02