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add audio2.0 support and template

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This commit is contained in:
sakumisu
2022-04-08 15:07:44 +08:00
parent e463be8305
commit b285051bdf
4 changed files with 849 additions and 88 deletions
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338
class/audio/usb_audio.h
View File

@@ -22,8 +22,7 @@
#define AUDIO_SUBCLASS_MIDISTREAMING 0x03 #define AUDIO_SUBCLASS_MIDISTREAMING 0x03
#define AUDIO_PROTOCOL_UNDEFINED 0x00 #define AUDIO_PROTOCOL_UNDEFINED 0x00
#define AUDIO_PROTOCOLv20 0x20 /* IP version 2.0 */ #define AUDIO_PROTOCOLv20 0x20 /* IP version 2.0 */
#define AUDIO_PROTOCOLv20_BCD 0x0200 /* IP version 2.0 (BCD) */
/** Audio Class-Specific Request Codes /** Audio Class-Specific Request Codes
* Refer to Table A-9 from audio10.pdf * Refer to Table A-9 from audio10.pdf
@@ -41,6 +40,11 @@
#define AUDIO_REQUEST_GET_MEM 0x85 #define AUDIO_REQUEST_GET_MEM 0x85
#define AUDIO_REQUEST_GET_STAT 0xFF #define AUDIO_REQUEST_GET_STAT 0xFF
/** Audio Class-Specific Request Codes
* Refer from audio20_final.pdf
*/
#define AUDIO_REQUEST_CUR 0x01
#define AUDIO_REQUEST_RANGE 0x02
/** Audio Class-Specific Control Interface Descriptor Subtypes /** Audio Class-Specific Control Interface Descriptor Subtypes
* Refer to Table A-5 from audio10.pdf * Refer to Table A-5 from audio10.pdf
*/ */
@@ -242,6 +246,23 @@
#define AUDIO_FU_CONTROL_OVERFLOW 0x0f #define AUDIO_FU_CONTROL_OVERFLOW 0x0f
#define AUDIO_FU_CONTROL_LATENCY 0x10 #define AUDIO_FU_CONTROL_LATENCY 0x10
#define AUDIO_V2_FU_CONTROL_UNDEF 0x00
#define AUDIO_V2_FU_CONTROL_MUTE (0x03 << 0)
#define AUDIO_V2_FU_CONTROL_VOLUME (0x03 << 2)
#define AUDIO_V2_FU_CONTROL_BASS (0x03 << 4)
#define AUDIO_V2_FU_CONTROL_MID (0x03 << 6)
#define AUDIO_V2_FU_CONTROL_TREBLE (0x03 << 8)
#define AUDIO_V2_FU_CONTROL_EQUALIZER (0x03 << 10)
#define AUDIO_V2_FU_CONTROL_AGC (0x03 << 12)
#define AUDIO_V2_FU_CONTROL_DELAY (0x03 << 14)
#define AUDIO_V2_FU_CONTROL_BASS_BOOST (0x03 << 16)
#define AUDIO_V2_FU_CONTROL_LOUDNESS (0x03 << 18)
#define AUDIO_V2_FU_CONTROL_INP_GAIN (0x03 << 20)
#define AUDIO_V2_FU_CONTROL_INP_GAIN_PAD (0x03 << 22)
#define AUDIO_V2_FU_CONTROL_PHASE_INVERT (0x03 << 24)
#define AUDIO_V2_FU_CONTROL_UNDERFLOW (0x03 << 26)
#define AUDIO_V2_FU_CONTROL_OVERFLOW (0x03 << 28)
/* Parametric Equalizer Section Effect Unit Control Selectors */ /* Parametric Equalizer Section Effect Unit Control Selectors */
#define AUDIO_PE_CONTROL_UNDEF 0x00 #define AUDIO_PE_CONTROL_UNDEF 0x00
#define AUDIO_PE_CONTROL_ENABLE 0x01 #define AUDIO_PE_CONTROL_ENABLE 0x01
@@ -390,11 +411,9 @@
#define AUDIO_DTSD_CONTROL_DECODE_ERR 0x03 #define AUDIO_DTSD_CONTROL_DECODE_ERR 0x03
/* Endpoint Control Selectors */ /* Endpoint Control Selectors */
#define AUDIO_EP_CONTROL_UNDEF 0x00
#define AUDIO_EP_CONTROL_UNDEF 0x00 #define AUDIO_EP_CONTROL_SAMPLING_FEQ 0x01
#define AUDIO_EP_CONTROL_PITCH 0x01 #define AUDIO_EP_CONTROL_PITCH 0x02
#define AUDIO_EP_CONTROL_OVERRUN 0x02
#define AUDIO_EP_CONTROL_UNDERRUN 0x03
/* Encoder Error Codes */ /* Encoder Error Codes */
@@ -581,7 +600,7 @@ struct audio_cs_if_ac_header_descriptor {
uint8_t bLength; uint8_t bLength;
uint8_t bDescriptorType; uint8_t bDescriptorType;
uint8_t bDescriptorSubtype; uint8_t bDescriptorSubtype;
uint16_t bcdAUDIO; uint16_t bcdADC;
uint16_t wTotalLength; uint16_t wTotalLength;
uint8_t bInCollection; uint8_t bInCollection;
uint8_t baInterfaceNr[]; uint8_t baInterfaceNr[];
@@ -624,11 +643,11 @@ struct audio_cs_if_ac_feature_unit_descriptor {
uint8_t bUnitID; uint8_t bUnitID;
uint8_t bSourceID; uint8_t bSourceID;
uint8_t bControlSize; uint8_t bControlSize;
// uint8_t bmaControls[]; uint8_t bmaControls[1];
uint8_t iFeature; uint8_t iFeature;
} __PACKED; } __PACKED;
#define AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(n) (7 + n) #define AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(ch, n) (7 + ch * n)
struct audio_cs_if_as_general_descriptor { struct audio_cs_if_as_general_descriptor {
uint8_t bLength; uint8_t bLength;
@@ -680,7 +699,7 @@ struct audio_cs_ep_ep_general_descriptor {
#define AUDIO_SIZEOF_CS_EP_GENERAL_DESC (7) #define AUDIO_SIZEOF_CS_EP_GENERAL_DESC (7)
// clang-format off // clang-format off
#define AUDIO_AC_DESCRIPTOR_INIT(bFirstInterface, bInterfaceCount, bcdADC, wTotalLength, stridx, bInCollection, ...) \ #define AUDIO_AC_DESCRIPTOR_INIT(bFirstInterface, bInterfaceCount, wTotalLength, stridx, ...) \
/* Interface Association Descriptor */ \ /* Interface Association Descriptor */ \
0x08, \ 0x08, \
USB_DESCRIPTOR_TYPE_INTERFACE_ASSOCIATION, \ USB_DESCRIPTOR_TYPE_INTERFACE_ASSOCIATION, \
@@ -703,9 +722,9 @@ struct audio_cs_ep_ep_general_descriptor {
0x08 + PP_NARG(__VA_ARGS__), /* bLength */ \ 0x08 + PP_NARG(__VA_ARGS__), /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \ AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_CONTROL_HEADER, /* bDescriptorSubtype */ \ AUDIO_CONTROL_HEADER, /* bDescriptorSubtype */ \
WBVAL(bcdADC), /* bcdADC */ \ WBVAL(0x0100), /* bcdADC */ \
WBVAL(wTotalLength), /* wTotalLength */ \ WBVAL(wTotalLength), /* wTotalLength */ \
bInCollection, /* bInCollection */ \ PP_NARG(__VA_ARGS__), /* bInCollection */ \
__VA_ARGS__ /* baInterfaceNr */ __VA_ARGS__ /* baInterfaceNr */
#define AUDIO_AC_DESCRIPTOR_INIT_LEN(n) (0x08 + 0x09 + 0x08 + n) #define AUDIO_AC_DESCRIPTOR_INIT_LEN(n) (0x08 + 0x09 + 0x08 + n)
@@ -742,7 +761,7 @@ struct audio_cs_ep_ep_general_descriptor {
__VA_ARGS__, /* bmaControls(0) Mute */ \ __VA_ARGS__, /* bmaControls(0) Mute */ \
0x00 /* iTerminal */ 0x00 /* iTerminal */
#define AUDIO_AS_DESCRIPTOR_INIT(bInterfaceNumber, bTerminalLink, bNrChannels, bEndpointAddress, wMaxPacketSize, bInterval, bSamFreqType, ...) \ #define AUDIO_AS_DESCRIPTOR_INIT(bInterfaceNumber, bTerminalLink, bNrChannels, bEndpointAddress, wMaxPacketSize, bInterval, ...) \
0x09, /* bLength */ \ 0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \ USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \ bInterfaceNumber, /* bInterfaceNumber */ \
@@ -766,8 +785,7 @@ struct audio_cs_ep_ep_general_descriptor {
AUDIO_STREAMING_GENERAL, /* bDescriptorSubtype */ \ AUDIO_STREAMING_GENERAL, /* bDescriptorSubtype */ \
bTerminalLink, /* bTerminalLink : Unit ID of the Output Terminal*/ \ bTerminalLink, /* bTerminalLink : Unit ID of the Output Terminal*/ \
0x01, /* bDelay */ \ 0x01, /* bDelay */ \
0x01, /* wFormatTag : AUDIO_FORMAT_PCM */ \ WBVAL(AUDIO_FORMAT_PCM), /* wFormatTag : AUDIO_FORMAT_PCM */ \
0x00, \
0x08 + PP_NARG(__VA_ARGS__), /* bLength */ \ 0x08 + PP_NARG(__VA_ARGS__), /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \ AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_STREAMING_FORMAT_TYPE, /* bDescriptorSubtype */ \ AUDIO_STREAMING_FORMAT_TYPE, /* bDescriptorSubtype */ \
@@ -775,24 +793,304 @@ struct audio_cs_ep_ep_general_descriptor {
bNrChannels, /* bNrChannels */ \ bNrChannels, /* bNrChannels */ \
0x02, /* bSubFrameSize : 2 Bytes per audio subframe */ \ 0x02, /* bSubFrameSize : 2 Bytes per audio subframe */ \
0x10, /* bBitResolution : 16 bits per sample */ \ 0x10, /* bBitResolution : 16 bits per sample */ \
bSamFreqType, /* bSamFreqType : only one frequency supported */ \ (PP_NARG(__VA_ARGS__)/3), /* bSamFreqType : only one frequency supported */ \
__VA_ARGS__, /* tSamFreq : Audio sampling frequency coded on 3 bytes */ \ __VA_ARGS__, /* tSamFreq : Audio sampling frequency coded on 3 bytes */ \
0x09, /* bLength */ \ 0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \ USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType */ \
bEndpointAddress, /* bEndpointAddress : IN endpoint 1 */ \ bEndpointAddress, /* bEndpointAddress : IN endpoint 1 */ \
0x01, /* bmAttributes */ \ 0x01, /* bmAttributes */ \
WBVAL(wMaxPacketSize), /* wMaxPacketSize */ \ WBVAL(wMaxPacketSize), /* wMaxPacketSize */ \
0x04, /* bInterval : one packet per frame */ \ bInterval, /* bInterval : one packet per frame */ \
0x00, /* bRefresh */ \ 0x00, /* bRefresh */ \
0x00, /* bSynchAddress */ \ 0x00, /* bSynchAddress */ \
0x07, /* bLength */ \ 0x07, /* bLength */ \
AUDIO_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType */ \ AUDIO_ENDPOINT_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_ENDPOINT_GENERAL, /* bDescriptor */ \ AUDIO_ENDPOINT_GENERAL, /* bDescriptor */ \
0x00, /* bmAttributes AUDIO_SAMPLING_FREQ_CONTROL */ \ AUDIO_EP_CONTROL_SAMPLING_FEQ, /* bmAttributes AUDIO_SAMPLING_FREQ_CONTROL */ \
0x00, /* bLockDelayUnits */ \ 0x00, /* bLockDelayUnits */ \
0x00, /* wLockDelay */ \ 0x00, /* wLockDelay */ \
0x00 0x00
// clang-format on
#define AUDIO_AS_DESCRIPTOR_INIT_LEN(n) (0x09 + 0x09 + 0x07 + 0x08 + 3 * n + 0x09 + 0x07) #define AUDIO_AS_DESCRIPTOR_INIT_LEN(n) (0x09 + 0x09 + 0x07 + 0x08 + 3 * n + 0x09 + 0x07)
struct audio_v2_channel_cluster_descriptor {
uint8_t bNrChannels;
uint32_t bmChannelConfig;
uint8_t iChannelNames;
} __PACKED;
#define AUDIO_V2_SIZEOF_CHANNEL_CLUSTER_DESC (6)
struct audio_v2_cs_if_ac_header_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint16_t bcdADC;
uint8_t bCategory;
uint16_t wTotalLength;
uint8_t bmControls;
} __PACKED;
#define AUDIO_V2_SIZEOF_AC_HEADER_DESC (9)
struct audio_v2_cs_if_ac_clock_source_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bClockID;
uint8_t bmAttributes;
uint8_t bmControls;
uint8_t bAssocTerminal;
uint8_t iClockSource;
} __PACKED;
#define AUDIO_SIZEOF_AC_CLOCK_SOURCE_DESC (8)
struct audio_v2_cs_if_ac_clock_selector_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bClockID;
uint8_t bNrInPins;
uint8_t baCSourceID[1];
uint8_t iClockSelector;
} __PACKED;
#define AUDIO_SIZEOF_AC_CLOCK_SELECTOR_DESC(n) (7 + n)
struct audio_v2_cs_if_ac_clock_multiplier_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bClockID;
uint8_t bCSourceID;
uint8_t bmControls;
uint8_t iClockMultiplier;
} __PACKED;
#define AUDIO_SIZEOF_AC_CLOCK_MULTIPLIER_DESC() (7)
struct audio_v2_cs_if_ac_input_terminal_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bTerminalID;
uint16_t wTerminalType;
uint8_t bAssocTerminal;
uint8_t bCSourceID;
uint8_t bNrChannels;
uint32_t wChannelConfig;
uint8_t iChannelNames;
uint16_t bmControls;
uint8_t iTerminal;
} __PACKED;
#define AUDIO_V2_SIZEOF_AC_INPUT_TERMINAL_DESC (17)
struct audio_v2_cs_if_ac_output_terminal_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bTerminalID;
uint16_t wTerminalType;
uint8_t bAssocTerminal;
uint8_t bSourceID;
uint8_t bCSourceID;
uint16_t bmControls;
uint8_t iTerminal;
} __PACKED;
#define AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC (12)
struct audio_v2_cs_if_ac_feature_unit_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bUnitID;
uint8_t bSourceID;
uint32_t bmaControls[1];
uint8_t iFeature;
} __PACKED;
#define AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(ch) (6 + ch * 4)
struct audio_v2_cs_if_as_general_descriptor {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bTerminalLink;
uint8_t bmControls;
uint8_t bFormatType;
uint32_t bmFormats;
uint8_t bNrChannels;
uint32_t bmChannelConfig;
uint8_t iChannelNames;
} __PACKED;
#define AUDIO_V2_SIZEOF_AS_GENERAL_DESC (16)
struct audio_v2_control_range1_param_block {
uint16_t wNumSubRanges;
struct
{
uint8_t bMin;
uint8_t bMax;
uint8_t bRes;
}subrange[];
} __PACKED;
struct audio_v2_control_range2_param_block {
uint16_t wNumSubRanges;
struct
{
uint16_t wMin;
uint16_t wMax;
uint16_t wRes;
}subrange[];
} __PACKED;
struct audio_v2_control_range3_param_block {
uint16_t wNumSubRanges;
struct
{
uint32_t dMin;
uint32_t dMax;
uint32_t dRes;
}subrange[];
} __PACKED;
#define AUDIO_V2_AC_DESCRIPTOR_INIT(bFirstInterface, bInterfaceCount, wTotalLength, bCategory, bmControls, stridx) \
/* Interface Association Descriptor */ \
0x08, \
USB_DESCRIPTOR_TYPE_INTERFACE_ASSOCIATION, \
bFirstInterface, \
bInterfaceCount, \
USB_DEVICE_CLASS_AUDIO, \
AUDIO_SUBCLASS_AUDIOCONTROL, \
AUDIO_PROTOCOLv20, \
0x00, \
/* ------------------ AudioControl Interface ------------------ */\
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bFirstInterface, /* bInterfaceNumber */ \
0x00, /* bAlternateSetting */ \
0x00, /* bNumEndpoints */ \
USB_DEVICE_CLASS_AUDIO, /* bInterfaceClass */ \
AUDIO_SUBCLASS_AUDIOCONTROL, /* bInterfaceSubClass */ \
AUDIO_PROTOCOLv20, /* bInterfaceProtocol */ \
stridx, /* iInterface */ \
0x09, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_CONTROL_HEADER, /* bDescriptorSubtype */ \
WBVAL(0x0200), /* bcdADC */ \
bCategory, /* bCategory */ \
WBVAL(wTotalLength), /* wTotalLength */ \
bmControls /* bmControls */ \
#define AUDIO_V2_AC_DESCRIPTOR_INIT_LEN (0x08 + 0x09 + 0x09)
#define AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(bClockID, bmAttributes, bmControls) \
0x08, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_CONTROL_CLOCK_SOURCE, /* bDescriptorSubtype */ \
bClockID, /* bClockID */ \
bmAttributes, /* bmAttributes */ \
bmControls, /* bmControls */ \
0x00, /* bAssocTerminal */ \
0x00 /* iClockSource */
#define AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(bTerminalID, wTerminalType, bCSourceID, bNrChannels, wChannelConfig, bmControls) \
0x11, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_CONTROL_INPUT_TERMINAL, /* bDescriptorSubtype */ \
bTerminalID, /* bTerminalID */ \
WBVAL(wTerminalType), /* wTerminalType : Microphone 0x0201 */ \
0x00, /* bAssocTerminal */ \
bCSourceID, /* bCSourceID */ \
bNrChannels, /* bNrChannels */ \
DBVAL(wChannelConfig), /* wChannelConfig : Mono sets no position bits */ \
0x00, /* iChannelNames */ \
WBVAL(bmControls), /* bmControls */ \
0x00 /* iTerminal */
#define AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(bTerminalID, wTerminalType, bSourceID, bCSourceID, bmControls) \
0x0c, /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_CONTROL_OUTPUT_TERMINAL, /* bDescriptorSubtype */ \
bTerminalID, /* bTerminalID */ \
WBVAL(wTerminalType), /* wTerminalType : USB Streaming */ \
0x00, /* bAssocTerminal */ \
bSourceID, /* bSourceID */ \
bCSourceID, /* bCSourceID */ \
WBVAL(bmControls), /* bmControls */ \
0x00 /* iTerminal */
#define AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(bUnitID, bSourceID, ...) \
0x06 + (PP_NARG(__VA_ARGS__)), /* bLength */ \
AUDIO_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType */ \
AUDIO_CONTROL_FEATURE_UNIT, /* bDescriptorSubtype */ \
bUnitID, /* bUnitID */ \
bSourceID, /* bSourceID */ \
__VA_ARGS__, /* bmaControls(0) Mute */ \
0x00 /* iTerminal */
// clang-format on
#define AUDIO_V2_AS_DESCRIPTOR_INIT(bInterfaceNumber, bTerminalLink, bNrChannels, bmChannelConfig, bSubslotSize, bBitResolution, bEndpointAddress, wMaxPacketSize, bInterval) \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \
0x00, /* bAlternateSetting */ \
0x00, /* bNumEndpoints */ \
USB_DEVICE_CLASS_AUDIO, /* bInterfaceClass */ \
AUDIO_SUBCLASS_AUDIOSTREAMING, /* bInterfaceSubClass */ \
AUDIO_PROTOCOLv20, /* bInterfaceProtocol */ \
0x00, /* iInterface */ \
0x09, /* bLength */ \
USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType */ \
bInterfaceNumber, /* bInterfaceNumber */ \
0x01, /* 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 Terminal*/ \
0x00, /* bmControls */ \
AUDIO_FORMAT_TYPE_I, /* bFormatType : AUDIO_FORMAT_TYPE_I */ \
DBVAL(AUDIO_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 */ \
0x05, /* bDescriptorType */ \
bEndpointAddress, /* bEndpointAddress 3 out endpoint for Audio */ \
0x09, /* bmAttributes */ \
WBVAL(wMaxPacketSize), /* XXXX wMaxPacketSize in Bytes (Freq(Samples)*2(Stereo)*2(HalfWord)) */ \
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_DESCRIPTOR_INIT_LEN (0x09 + 0x09 + 0x10 + 0x06 + 0x07 + 0x08)
#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))
#define AUDIO_SAMPLE_FREQ_4B(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), \
(uint8_t)((frq >> 16)), (uint8_t)((frq >> 24))
#endif /* _USB_AUDIO_H_ */ #endif /* _USB_AUDIO_H_ */

421
class/audio/usbd_audio.c
View File

@@ -23,13 +23,82 @@
#include "usbd_core.h" #include "usbd_core.h"
#include "usbd_audio.h" #include "usbd_audio.h"
struct usbd_audio_control_info { struct usbd_audio_volume_info {
uint16_t vol_min; uint16_t vol_min;
uint16_t vol_max; uint16_t vol_max;
uint16_t vol_res; uint16_t vol_res;
uint16_t vol_current; uint16_t vol_current;
uint8_t mute; };
} audio_control_info = { 0xdb00, 0x0000, 0x0100, 0xf600, 0 };
struct usbd_audio_v1_feature_unit_control {
struct usbd_audio_volume_info volume[CONFIG_USBDEV_AUDIO_MAX_CHANNEL];
uint8_t mute[CONFIG_USBDEV_AUDIO_MAX_CHANNEL];
uint8_t automatic_gain[CONFIG_USBDEV_AUDIO_MAX_CHANNEL];
};
struct audio_v2_control_range2_param_block_default {
uint16_t wNumSubRanges;
struct
{
uint16_t wMin;
uint16_t wMax;
uint16_t wRes;
} subrange[CONFIG_USBDEV_AUDIO_MAX_CHANNEL];
} __PACKED;
struct usbd_audio_v2_feature_unit_control {
uint32_t volume_bCUR;
uint32_t mute_bCUR;
struct audio_v2_control_range2_param_block_default volume;
uint8_t mute[CONFIG_USBDEV_AUDIO_MAX_CHANNEL];
};
struct audio_entity_info {
usb_slist_t list;
uint8_t bDescriptorSubtype;
uint8_t bEntityId;
void *priv;
};
static usb_slist_t usbd_audio_entity_info_head = USB_SLIST_OBJECT_INIT(usbd_audio_entity_info_head);
#if CONFIG_USBDEV_AUDIO_VERSION < 0x0200
static int audio_custom_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
uint8_t control_selector;
uint32_t sampling_freq;
uint8_t pitch_enable;
uint8_t ep;
if ((setup->bmRequestType & USB_REQUEST_RECIPIENT_MASK) == USB_REQUEST_RECIPIENT_ENDPOINT) {
control_selector = HI_BYTE(setup->wValue);
ep = LO_BYTE(setup->wIndex);
switch (setup->bRequest) {
case AUDIO_REQUEST_SET_CUR:
switch (control_selector) {
case AUDIO_EP_CONTROL_SAMPLING_FEQ:
memcpy(&sampling_freq, *data, *len);
USB_LOG_INFO("Set ep %02x %d Hz\r\n", ep, (int)sampling_freq);
usbd_audio_set_sampling_freq(ep, sampling_freq);
return 0;
case AUDIO_EP_CONTROL_PITCH:
pitch_enable = (*data)[0];
usbd_audio_set_pitch(ep, pitch_enable);
return 0;
default:
USB_LOG_WRN("Unhandled Audio Class control selector 0x%02x\r\n", control_selector);
break;
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class bRequest 0x%02x\r\n", setup->bRequest);
break;
}
}
return -1;
}
#endif
static int audio_class_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len) static int audio_class_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{ {
@@ -37,69 +106,236 @@ static int audio_class_request_handler(struct usb_setup_packet *setup, uint8_t *
"bRequest 0x%02x\r\n", "bRequest 0x%02x\r\n",
setup->bRequest); setup->bRequest);
switch (setup->bRequest) { struct audio_entity_info *current_entity_info = NULL;
case AUDIO_REQUEST_SET_CUR: usb_slist_t *i;
uint8_t entity_id;
uint8_t control_selector;
uint8_t ch;
uint8_t mute;
uint16_t volume;
const char *mute_string[2] = { "off", "on" };
if (LO_BYTE(setup->wValue) == 0x01) { entity_id = HI_BYTE(setup->wIndex);
if (HI_BYTE(setup->wValue) == AUDIO_FU_CONTROL_MUTE) { control_selector = HI_BYTE(setup->wValue);
memcpy(&audio_control_info.mute, *data, *len); ch = LO_BYTE(setup->wValue);
usbd_audio_set_mute(audio_control_info.mute);
} else if (HI_BYTE(setup->wValue) == AUDIO_FU_CONTROL_VOLUME) {
memcpy(&audio_control_info.vol_current, *data, *len);
int vol;
if (audio_control_info.vol_current == 0) {
vol = 100;
} else {
vol = (audio_control_info.vol_current - 0xDB00 + 1) * 100 / (0xFFFF - 0xDB00);
}
usbd_audio_set_volume(vol);
USB_LOG_INFO("current audio volume:%d\r\n", vol);
}
}
break; if (ch > (CONFIG_USBDEV_AUDIO_MAX_CHANNEL - 1)) {
return -2;
case AUDIO_REQUEST_GET_CUR:
if (HI_BYTE(setup->wValue) == AUDIO_FU_CONTROL_MUTE) {
*data = (uint8_t *)&audio_control_info.mute;
*len = 1;
} else if (HI_BYTE(setup->wValue) == AUDIO_FU_CONTROL_VOLUME) {
*data = (uint8_t *)&audio_control_info.vol_current;
*len = 2;
}
break;
case AUDIO_REQUEST_SET_RES:
break;
case AUDIO_REQUEST_SET_MEM:
break;
case AUDIO_REQUEST_GET_MIN:
*data = (uint8_t *)&audio_control_info.vol_min;
*len = 2;
break;
case AUDIO_REQUEST_GET_MAX:
*data = (uint8_t *)&audio_control_info.vol_max;
*len = 2;
break;
case AUDIO_REQUEST_GET_RES:
*data = (uint8_t *)&audio_control_info.vol_res;
*len = 2;
break;
case AUDIO_REQUEST_GET_MEM:
*data[0] = 0;
*len = 1;
break;
default:
USB_LOG_WRN("Unhandled Audio Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
} }
usb_slist_for_each(i, &usbd_audio_entity_info_head)
{
struct audio_entity_info *tmp_entity_info = usb_slist_entry(i, struct audio_entity_info, list);
if (tmp_entity_info->bEntityId == entity_id) {
current_entity_info = tmp_entity_info;
break;
}
}
if (current_entity_info == NULL) {
return -2;
}
if (current_entity_info->bDescriptorSubtype == AUDIO_CONTROL_FEATURE_UNIT) {
#if CONFIG_USBDEV_AUDIO_VERSION < 0x0200
struct usbd_audio_v1_feature_unit_control *current_control = (struct usbd_audio_v1_feature_unit_control *)current_entity_info->priv;
float volume2db = 0.0;
switch (control_selector) {
case AUDIO_FU_CONTROL_MUTE:
switch (setup->bRequest) {
case AUDIO_REQUEST_SET_CUR:
mute = (*data)[0];
current_control->mute[ch] = mute;
USB_LOG_INFO("Set ch[%d] mute %s\r\n", ch, mute_string[mute]);
usbd_audio_set_mute(ch, mute);
break;
case AUDIO_REQUEST_GET_CUR:
(*data)[0] = current_control->mute[ch];
break;
default:
USB_LOG_WRN("Unhandled Audio Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case AUDIO_FU_CONTROL_VOLUME:
switch (setup->bRequest) {
case AUDIO_REQUEST_SET_CUR:
volume = (((uint16_t)(*data)[1] << 8) | ((uint16_t)(*data)[0]));
current_control->volume[ch].vol_current = volume;
if (volume < 0x8000) {
volume2db = 0.00390625 * volume;
} else if (volume > 0x8000) {
volume2db = -0.00390625 * (0xffff - volume + 1);
}
USB_LOG_INFO("Set ch[%d] %0.4f dB\r\n", ch, volume2db);
usbd_audio_set_volume(ch, volume2db);
break;
case AUDIO_REQUEST_GET_CUR:
memcpy(*data, &current_control->volume[ch].vol_current, 2);
*len = 2;
break;
case AUDIO_REQUEST_GET_MIN:
memcpy(*data, &current_control->volume[ch].vol_min, 2);
*len = 2;
break;
case AUDIO_REQUEST_GET_MAX:
memcpy(*data, &current_control->volume[ch].vol_max, 2);
*len = 2;
break;
case AUDIO_REQUEST_GET_RES:
memcpy(*data, &current_control->volume[ch].vol_res, 2);
*len = 2;
break;
default:
USB_LOG_WRN("Unhandled Audio Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class control selector 0x%02x\r\n", control_selector);
break;
}
#else
struct usbd_audio_v2_feature_unit_control *control = (struct usbd_audio_v2_feature_unit_control *)current_entity_info->priv;
switch (setup->bRequest) {
case AUDIO_REQUEST_CUR:
switch (control_selector) {
case AUDIO_FU_CONTROL_MUTE:
if (setup->bmRequestType & USB_REQUEST_DIR_MASK) {
(*data)[0] = control->mute_bCUR;
*len = 1;
} else {
mute = (*data)[0];
USB_LOG_INFO("Set ch[%d] mute %s\r\n", ch, mute_string[mute]);
usbd_audio_set_mute(ch, mute);
}
break;
case AUDIO_FU_CONTROL_VOLUME:
if (setup->bmRequestType & USB_REQUEST_DIR_MASK) {
(*data)[0] = control->volume_bCUR & 0XFF;
(*data)[1] = (control->volume_bCUR >> 8) & 0xff;
*len = 2;
} else {
volume = (((uint16_t)(*data)[1] << 8) | ((uint16_t)(*data)[0]));
control->volume_bCUR = volume;
USB_LOG_INFO("Set ch[%d] %d dB\r\n", ch, volume);
usbd_audio_set_volume(ch, volume);
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class control selector 0x%02x\r\n", control_selector);
break;
}
break;
case AUDIO_REQUEST_RANGE:
switch (control_selector) {
case AUDIO_FU_CONTROL_VOLUME:
if (setup->bmRequestType & USB_REQUEST_DIR_MASK) {
*((uint16_t *)(*data + 0)) = control->volume.wNumSubRanges;
*((uint16_t *)(*data + 2)) = control->volume.subrange[ch].wMin;
*((uint16_t *)(*data + 4)) = control->volume.subrange[ch].wMax;
*((uint16_t *)(*data + 6)) = control->volume.subrange[ch].wRes;
*len = 8;
} else {
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class control selector 0x%02x\r\n", control_selector);
break;
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
#endif
}
#if CONFIG_USBDEV_AUDIO_VERSION >= 0x0200
else if (current_entity_info->bDescriptorSubtype == AUDIO_CONTROL_CLOCK_SOURCE) {
switch (setup->bRequest) {
case AUDIO_REQUEST_CUR:
switch (control_selector) {
case AUDIO_CS_CONTROL_SAM_FREQ:
if (setup->bmRequestType & USB_REQUEST_DIR_MASK) {
uint8_t param_block[] = {
0x80,
0xbb,
0x00,
0x00
};
memcpy(*data, param_block, sizeof(param_block));
*len = 4;
} else {
uint32_t sampling_freq;
memcpy(&sampling_freq, *data, setup->wLength);
USB_LOG_INFO("Set ch[%d] %d Hz\r\n", ch, (int)sampling_freq);
usbd_audio_set_sampling_freq(ch, sampling_freq);
}
break;
case AUDIO_CS_CONTROL_CLOCK_VALID:
if (setup->bmRequestType & USB_REQUEST_DIR_MASK) {
(*data)[0] = 1;
*len = 1;
} else {
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class control selector 0x%02x\r\n", control_selector);
break;
}
break;
case AUDIO_REQUEST_RANGE:
switch (control_selector) {
case AUDIO_CS_CONTROL_SAM_FREQ:
if (setup->bmRequestType & USB_REQUEST_DIR_MASK) {
uint8_t param_block[] = {
AUDIO_SAMPLE_FREQ_NUM(6),
AUDIO_SAMPLE_FREQ_4B(16000),
AUDIO_SAMPLE_FREQ_4B(16000),
AUDIO_SAMPLE_FREQ_4B(0x00),
AUDIO_SAMPLE_FREQ_4B(48000),
AUDIO_SAMPLE_FREQ_4B(48000),
AUDIO_SAMPLE_FREQ_4B(0x00),
AUDIO_SAMPLE_FREQ_4B(96000),
AUDIO_SAMPLE_FREQ_4B(96000),
AUDIO_SAMPLE_FREQ_4B(0x00),
AUDIO_SAMPLE_FREQ_4B(44100),
AUDIO_SAMPLE_FREQ_4B(44100),
AUDIO_SAMPLE_FREQ_4B(0x00),
AUDIO_SAMPLE_FREQ_4B(8000),
AUDIO_SAMPLE_FREQ_4B(8000),
AUDIO_SAMPLE_FREQ_4B(0x00),
AUDIO_SAMPLE_FREQ_4B(32000),
AUDIO_SAMPLE_FREQ_4B(32000),
AUDIO_SAMPLE_FREQ_4B(0x00),
};
memcpy(*data, param_block, sizeof(param_block));
*len = sizeof(param_block);
} else {
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class control selector 0x%02x\r\n", control_selector);
break;
}
break;
default:
USB_LOG_WRN("Unhandled Audio Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
}
#endif
return 0; return 0;
} }
@@ -114,14 +350,16 @@ static void audio_notify_handler(uint8_t event, void *arg)
usbd_audio_sof_callback(); usbd_audio_sof_callback();
break; break;
case USBD_EVENT_SET_INTERFACE: case USBD_EVENT_SET_INTERFACE: {
struct usb_interface_descriptor *intf = (struct usb_interface_descriptor *)arg; struct usb_interface_descriptor *intf = (struct usb_interface_descriptor *)arg;
if (intf->bAlternateSetting == 1) { if (intf->bAlternateSetting == 1) {
usbd_audio_open(intf->bInterfaceNumber); usbd_audio_open(intf->bInterfaceNumber);
} else { } else {
usbd_audio_close(intf->bInterfaceNumber); usbd_audio_close(intf->bInterfaceNumber);
} }
break; }
break;
default: default:
break; break;
@@ -138,17 +376,68 @@ void usbd_audio_add_interface(usbd_class_t *devclass, usbd_interface_t *intf)
} }
intf->class_handler = audio_class_request_handler; intf->class_handler = audio_class_request_handler;
#if CONFIG_USBDEV_AUDIO_VERSION < 0x0200
intf->custom_handler = audio_custom_request_handler;
#else
intf->custom_handler = NULL; intf->custom_handler = NULL;
#endif
intf->vendor_handler = NULL; intf->vendor_handler = NULL;
intf->notify_handler = audio_notify_handler; intf->notify_handler = audio_notify_handler;
usbd_class_add_interface(devclass, intf); usbd_class_add_interface(devclass, intf);
} }
__WEAK void usbd_audio_set_volume(uint8_t vol) void usbd_audio_add_entity(uint8_t entity_id, uint16_t bDescriptorSubtype)
{
struct audio_entity_info *entity_info = malloc(sizeof(struct audio_entity_info));
memset(entity_info, 0, sizeof(struct audio_entity_info));
entity_info->bEntityId = entity_id;
entity_info->bDescriptorSubtype = bDescriptorSubtype;
if (bDescriptorSubtype == AUDIO_CONTROL_FEATURE_UNIT) {
#if CONFIG_USBDEV_AUDIO_VERSION < 0x0200
struct usbd_audio_v1_feature_unit_control *control = malloc(sizeof(struct usbd_audio_v1_feature_unit_control));
memset(control, 0, sizeof(struct usbd_audio_v1_feature_unit_control));
for (uint8_t ch = 0; ch < CONFIG_USBDEV_AUDIO_MAX_CHANNEL; ch++) {
control->volume[ch].vol_min = 0xdb00;
control->volume[ch].vol_max = 0x0000;
control->volume[ch].vol_res = 0x0100;
control->volume[ch].vol_current = 0xf600;
control->mute[ch] = 0;
control->automatic_gain[ch] = 0;
}
#else
struct usbd_audio_v2_feature_unit_control *control = malloc(sizeof(struct usbd_audio_v2_feature_unit_control));
memset(control, 0, sizeof(struct usbd_audio_v2_feature_unit_control));
for (uint8_t ch = 0; ch < CONFIG_USBDEV_AUDIO_MAX_CHANNEL; ch++) {
control->volume.wNumSubRanges = 1;
control->volume.subrange[ch].wMin = 0;
control->volume.subrange[ch].wMax = 100;
control->volume.subrange[ch].wRes = 1;
control->mute[ch] = 0;
control->volume_bCUR = 50;
control->mute_bCUR = 0;
}
#endif
entity_info->priv = control;
} else if (bDescriptorSubtype == AUDIO_CONTROL_CLOCK_SOURCE) {
}
usb_slist_add_tail(&usbd_audio_entity_info_head, &entity_info->list);
}
__WEAK void usbd_audio_set_volume(uint8_t ch, float dB)
{ {
} }
__WEAK void usbd_audio_set_mute(uint8_t mute) __WEAK void usbd_audio_set_mute(uint8_t ch, uint8_t enable)
{
}
__WEAK void usbd_audio_set_sampling_freq(uint8_t ep_ch, uint32_t sampling_freq)
{
}
__WEAK void usbd_audio_set_pitch(uint8_t ep, bool enable)
{ {
} }

8
class/audio/usbd_audio.h
View File

@@ -33,8 +33,12 @@ void usbd_audio_add_interface(usbd_class_t *devclass, usbd_interface_t *intf);
void usbd_audio_open(uint8_t intf); void usbd_audio_open(uint8_t intf);
void usbd_audio_close(uint8_t intf); void usbd_audio_close(uint8_t intf);
void usbd_audio_set_mute(uint8_t mute); void usbd_audio_add_entity(uint8_t entity_id, uint16_t bDescriptorSubtype);
void usbd_audio_set_volume(uint8_t vol); void usbd_audio_set_volume(uint8_t ch, float dB);
void usbd_audio_set_mute(uint8_t ch, uint8_t enable);
void usbd_audio_set_sampling_freq(uint8_t ep_ch, uint32_t sampling_freq);
void usbd_audio_set_pitch(uint8_t ep, bool enable);
void usbd_audio_sof_callback(void);
#ifdef __cplusplus #ifdef __cplusplus
} }

170
demo/audio_v2_speaker_dualchan_template.c Normal file
View File

@@ -0,0 +1,170 @@
#include "usbd_core.h"
#include "usbd_audio.h"
#define USBD_VID 0xffff
#define USBD_PID 0xffff
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
#ifdef CONFIG_USB_HS
#define EP_INTERVAL 0x04
#else
#define EP_INTERVAL 0x01
#endif
#define AUDIO_OUT_EP 0x01
#define AUDIO_FREQ 48000
/* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */
/* 16bit(2 Bytes) 双声道(Mono:2) */
#define AUDIO_OUT_PACKET ((uint32_t)((AUDIO_FREQ * 2 * 2) / 1000))
#define HALF_WORD_BYTES 2 //2 half word (one channel)
#define SAMPLE_BITS 16 //16 bit per channel
#define CHANNEL_NUM 2
#define BMCONTROL (AUDIO_V2_FU_CONTROL_MUTE | AUDIO_V2_FU_CONTROL_VOLUME)
#define USB_AUDIO_CONFIG_DESC_SIZ (9 + \
AUDIO_V2_AC_DESCRIPTOR_INIT_LEN + \
AUDIO_SIZEOF_AC_CLOCK_SOURCE_DESC + \
AUDIO_V2_SIZEOF_AC_INPUT_TERMINAL_DESC + \
AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(CHANNEL_NUM) + \
AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC + \
AUDIO_V2_AS_DESCRIPTOR_INIT_LEN)
#define AUDIO_AC_SIZ (AUDIO_V2_SIZEOF_AC_HEADER_DESC + \
AUDIO_SIZEOF_AC_CLOCK_SOURCE_DESC + \
AUDIO_V2_SIZEOF_AC_INPUT_TERMINAL_DESC + \
AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(CHANNEL_NUM) + \
AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC)
const uint8_t audio_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01),
USB_CONFIG_DESCRIPTOR_INIT(USB_AUDIO_CONFIG_DESC_SIZ, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
AUDIO_V2_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, AUDIO_CATEGORY_SPEAKER, 0x00, 0x00),
AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(0x01, 0x03, 0x07),
AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x02, AUDIO_TERMINAL_STREAMING, 0x01, CHANNEL_NUM, 0x00000003, 0x0000),
AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x03, 0x02, DBVAL(BMCONTROL), DBVAL(BMCONTROL)),
AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_OUTTERM_SPEAKER, 0x03, 0x01, 0x0000),
AUDIO_V2_AS_DESCRIPTOR_INIT(0x01, 0x02, CHANNEL_NUM, 0x00000003, HALF_WORD_BYTES, SAMPLE_BITS, AUDIO_OUT_EP, AUDIO_OUT_PACKET, EP_INTERVAL),
///////////////////////////////////////
/// string0 descriptor
///////////////////////////////////////
USB_LANGID_INIT(USBD_LANGID_STRING),
///////////////////////////////////////
/// string1 descriptor
///////////////////////////////////////
0x14, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'C', 0x00, /* wcChar0 */
'h', 0x00, /* wcChar1 */
'e', 0x00, /* wcChar2 */
'r', 0x00, /* wcChar3 */
'r', 0x00, /* wcChar4 */
'y', 0x00, /* wcChar5 */
'U', 0x00, /* wcChar6 */
'S', 0x00, /* wcChar7 */
'B', 0x00, /* wcChar8 */
///////////////////////////////////////
/// string2 descriptor
///////////////////////////////////////
0x26, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'C', 0x00, /* wcChar0 */
'h', 0x00, /* wcChar1 */
'e', 0x00, /* wcChar2 */
'r', 0x00, /* wcChar3 */
'r', 0x00, /* wcChar4 */
'y', 0x00, /* wcChar5 */
'U', 0x00, /* wcChar6 */
'S', 0x00, /* wcChar7 */
'B', 0x00, /* wcChar8 */
' ', 0x00, /* wcChar9 */
'U', 0x00, /* wcChar10 */
'A', 0x00, /* wcChar11 */
'C', 0x00, /* wcChar12 */
' ', 0x00, /* wcChar13 */
'D', 0x00, /* wcChar14 */
'E', 0x00, /* wcChar15 */
'M', 0x00, /* wcChar16 */
'O', 0x00, /* wcChar17 */
///////////////////////////////////////
/// string3 descriptor
///////////////////////////////////////
0x16, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'2', 0x00, /* wcChar0 */
'0', 0x00, /* wcChar1 */
'2', 0x00, /* wcChar2 */
'1', 0x00, /* wcChar3 */
'0', 0x00, /* wcChar4 */
'3', 0x00, /* wcChar5 */
'1', 0x00, /* wcChar6 */
'0', 0x00, /* wcChar7 */
'0', 0x00, /* wcChar8 */
'3', 0x00, /* wcChar9 */
#ifdef CONFIG_USB_HS
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x00,
0x00,
0x00,
0x40,
0x01,
0x00,
#endif
0x00
};
volatile bool tx_flag = 0;
void usbd_audio_open(uint8_t intf)
{
tx_flag = 1;
printf("OPEN\r\n");
}
void usbd_audio_close(uint8_t intf)
{
printf("CLOSE\r\n");
tx_flag = 0;
}
static usbd_class_t audio_class;
static usbd_interface_t audio_control_intf;
static usbd_interface_t audio_stream_intf;
void usbd_audio_iso_callback(uint8_t ep)
{
}
static usbd_endpoint_t audio_in_ep = {
.ep_cb = usbd_audio_iso_callback,
.ep_addr = AUDIO_IN_EP
};
void audio_init()
{
usbd_desc_register(audio_descriptor);
usbd_audio_add_interface(&audio_class, &audio_control_intf);
usbd_audio_add_interface(&audio_class, &audio_stream_intf);
usbd_interface_add_endpoint(&audio_stream_intf, &audio_in_ep);
usbd_audio_add_entity(0x01, AUDIO_CONTROL_CLOCK_SOURCE);
usbd_audio_add_entity(0x03, AUDIO_CONTROL_FEATURE_UNIT);
usbd_initialize();
}
void audio_test()
{
while (1) {
if (tx_flag) {
}
}
}