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feat(class/audio/usb_audio): add audio altsetting desc init macros
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@sakumisu
sakumisu committed Sep 30, 2024
1 parent 2c52445 commit 525884a
Showing 1 changed file with 115 additions and 8 deletions.
123 changes: 115 additions & 8 deletions class/audio/usb_audio.h
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Original file line number Diff line number Diff line change
Expand Up @@ -132,11 +132,11 @@
#define AUDIO_FORMAT_ALAW 0x0004
#define AUDIO_FORMAT_MULAW 0x0005

#define AUDIO_V2_FORMAT_PCM 0x00000001
#define AUDIO_V2_FORMAT_PCM8 0x00000002
#define AUDIO_V2_FORMAT_IEEE_FLOAT 0x00000004
#define AUDIO_V2_FORMAT_ALAW 0x00000008
#define AUDIO_V2_FORMAT_MULAW 0x00000010
#define AUDIO_V2_FORMAT_PCM 0x00000001
#define AUDIO_V2_FORMAT_PCM8 0x00000002
#define AUDIO_V2_FORMAT_IEEE_FLOAT 0x00000004
#define AUDIO_V2_FORMAT_ALAW 0x00000008
#define AUDIO_V2_FORMAT_MULAW 0x00000010

/* bmChannelConfig: a bitmap field that indicates which spatial locations
* are occupied by the channels present in the cluster. The bit allocations
Expand Down Expand Up @@ -812,6 +812,60 @@ struct audio_cs_ep_ep_general_descriptor {

#define AUDIO_AS_DESCRIPTOR_INIT_LEN(n) (0x09 + 0x09 + 0x07 + 0x08 + 3 * n + 0x09 + 0x07)

#define AUDIO_AS_ALTSETTING_DESCRIPTOR_INIT(bInterfaceNumber, bAlternateSetting, bTerminalLink, bNrChannels, bSubFrameSize, bBitResolution, bEndpointAddress, bmAttributes, wMaxPacketSize, bInterval, ...) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \
bAlternateSetting, /* bAlternateSetting */ \
0x01, /* bNumEndpoints */ \
USB_DEVICE_CLASS_AUDIO, /* bInterfaceClass */ \
AUDIO_SUBCLASS_AUDIOSTREAMING, /* bInterfaceSubClass */ \
AUDIO_PROTOCOL_UNDEFINED, /* bInterfaceProtocol */ \
0x00, /* iInterface */ \
0x07, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_STREAMING_GENERAL, /* bDescriptorSubtype */ \
bTerminalLink, /* bTerminalLink : Unit ID of the Output Terminal*/ \
0x01, /* bDelay */ \
WBVAL(AUDIO_FORMAT_PCM), /* wFormatTag : AUDIO_FORMAT_PCM */ \
0x08 + PP_NARG(__VA_ARGS__), /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_STREAMING_FORMAT_TYPE, /* bDescriptorSubtype */ \
AUDIO_FORMAT_TYPE_I, /* bFormatType */ \
bNrChannels, /* bNrChannels */ \
bSubFrameSize, /* bSubFrameSize : Bytes per audio subframe */ \
bBitResolution, /* bBitResolution : bits per sample */ \
(PP_NARG(__VA_ARGS__)/3), /* bSamFreqType : only one frequency supported */ \
__VA_ARGS__, /* tSamFreq : Audio sampling frequency coded on 3 bytes */ \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
bEndpointAddress, /* bEndpointAddress : IN endpoint 1 */ \
bmAttributes, /* bmAttributes */ \
WBVAL(wMaxPacketSize), /* wMaxPacketSize */ \
bInterval, /* bInterval : one packet per frame */ \
0x00, /* bRefresh */ \
0x00, /* bSynchAddress */ \
0x07, /* bLength */ \
AUDIO_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_ENDPOINT_GENERAL, /* bDescriptor */ \
AUDIO_EP_CONTROL_SAMPLING_FEQ, /* bmAttributes AUDIO_SAMPLING_FREQ_CONTROL */ \
0x00, /* bLockDelayUnits */ \
0x00, /* wLockDelay */ \
0x00

#define AUDIO_AS_ALTSETTING_DESCRIPTOR_INIT_LEN(n) (0x09 + 0x07 + 0x08 + 3 * n + 0x09 + 0x07)

#define AUDIO_AS_ALTSETTING0_DESCRIPTOR_INIT(bInterfaceNumber) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \
0x00, /* bAlternateSetting */ \
0x01, /* bNumEndpoints */ \
USB_DEVICE_CLASS_AUDIO, /* bInterfaceClass */ \
AUDIO_SUBCLASS_AUDIOSTREAMING, /* bInterfaceSubClass */ \
AUDIO_PROTOCOL_UNDEFINED, /* bInterfaceProtocol */ \
0x00 /* iInterface */

#define AUDIO_MS_STANDARD_DESCRIPTOR_INIT(bInterfaceNumber, bNumEndpoints) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
Expand Down Expand Up @@ -1096,6 +1150,58 @@ struct audio_v2_control_range3_param_block {
0x00, /* wLockDelay */ \
0x00

#define AUDIO_V2_AS_ALTSETTING_DESCRIPTOR_INIT(bInterfaceNumber, bAlternateSetting, bTerminalLink, bNrChannels, bmChannelConfig, bSubslotSize, bBitResolution, bEndpointAddress, bmAttributes, wMaxPacketSize, bInterval) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \
bAlternateSetting, /* bAlternateSetting */ \
0x01, /* bNumEndpoints */ \
USB_DEVICE_CLASS_AUDIO, /* bInterfaceClass */ \
AUDIO_SUBCLASS_AUDIOSTREAMING, /* bInterfaceSubClass */ \
AUDIO_PROTOCOLv20, /* bInterfaceProtocol */ \
0x00, /* iInterface */ \
0x10, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_STREAMING_GENERAL, /* bDescriptorSubtype */ \
bTerminalLink, /* bTerminalLink : Unit ID of the Output or Input Terminal*/ \
0x00, /* bmControls */ \
AUDIO_FORMAT_TYPE_I, /* bFormatType : AUDIO_FORMAT_TYPE_I */ \
DBVAL(AUDIO_V2_FORMAT_PCM), /* bmFormats PCM */ \
bNrChannels, /* bNrChannels */ \
DBVAL(bmChannelConfig), /* bmChannelConfig */ \
0x00, /* iChannelNames */ \
0x06, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_STREAMING_FORMAT_TYPE, /* bDescriptorSubtype */ \
AUDIO_FORMAT_TYPE_I, /* bFormatType */ \
bSubslotSize, /* bSubslotSize */ \
bBitResolution, /* bBitResolution */ \
0x07, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
bEndpointAddress, /* bEndpointAddress 3 out endpoint for Audio */ \
bmAttributes, /* bmAttributes */ \
WBVAL(wMaxPacketSize), /* XXXX wMaxPacketSize in Bytes (SampleRate * SlotByteSize * NumChannels) */ \
bInterval, /* bInterval */ \
0x08, /* bLength */ \
AUDIO_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_ENDPOINT_GENERAL, /* bDescriptor */ \
0x00, /* bmAttributes */ \
0x00, /* bmControls */ \
0x00, /* bLockDelayUnits */ \
0x00, /* wLockDelay */ \
0x00

#define AUDIO_V2_AS_ALTSETTING0_DESCRIPTOR_INIT(bInterfaceNumber) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \
0x00, /* bAlternateSetting */ \
0x01, /* bNumEndpoints */ \
USB_DEVICE_CLASS_AUDIO, /* bInterfaceClass */ \
AUDIO_SUBCLASS_AUDIOSTREAMING, /* bInterfaceSubClass */ \
AUDIO_PROTOCOLv20, /* bInterfaceProtocol */ \
0x00 /* iInterface */

#define AUDIO_V2_AS_FEEDBACK_DESCRIPTOR_INIT(bInterfaceNumber, bTerminalLink, bNrChannels, bmChannelConfig, bSubslotSize, bBitResolution, bEndpointAddress, wMaxPacketSize, bInterval, bFeedbackEndpointAddress) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
Expand Down Expand Up @@ -1150,12 +1256,13 @@ struct audio_v2_control_range3_param_block {
bFeedbackEndpointAddress, /* bFeedbackEndpointAddress Revise Dir to bEndpointAddress */ \
0x11, /* bmAttributes: TransferType=Isochronous SyncType=None EndpointType=Feedback */ \
WBVAL(4), /* XXXX wMaxPacketSize in Bytes */ \
bInterval /* bInterval */ \
bInterval /* bInterval */

// clang-format on

#define AUDIO_V2_AS_DESCRIPTOR_INIT_LEN (0x09 + 0x09 + 0x10 + 0x06 + 0x07 + 0x08)
#define AUDIO_V2_AS_FEEDBACK_DESCRIPTOR_INIT_LEN (0x09 + 0x09 + 0x10 + 0x06 + 0x07 + 0x08 + 0x07)
#define AUDIO_V2_AS_DESCRIPTOR_INIT_LEN (0x09 + 0x09 + 0x10 + 0x06 + 0x07 + 0x08)
#define AUDIO_V2_AS_ALTSETTING_DESCRIPTOR_INIT_LEN (0x09 + 0x10 + 0x06 + 0x07 + 0x08)
#define AUDIO_V2_AS_FEEDBACK_DESCRIPTOR_INIT_LEN (0x09 + 0x09 + 0x10 + 0x06 + 0x07 + 0x08 + 0x07)

#define AUDIO_SAMPLE_FREQ_NUM(num) (uint8_t)(num), (uint8_t)((num >> 8))
#define AUDIO_SAMPLE_FREQ_3B(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), (uint8_t)((frq >> 16))
Expand Down

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