feat(demo): add uvc_uac_hid template

3 files changed, 521 insertions, 3 deletions

diff --git a/demo/audio_v1_mic_speaker_multichan_template.c b/demo/audio_v1_mic_speaker_multichan_template.c
index 351f66fe..fbd53e31 100644
--- a/demo/audio_v1_mic_speaker_multichan_template.c
+++ b/demo/audio_v1_mic_speaker_multichan_template.c
@@ -194,11 +194,11 @@ void usbd_audio_open(uint8_t busid, uint8_t intf)
 void usbd_audio_close(uint8_t busid, uint8_t intf)
 {
     if (intf == 1) {
-        rx_flag = 1;
-        ep_tx_busy_flag = false;
+        rx_flag = 0;
         printf("CLOSE1\r\n");
     } else {
         tx_flag = 0;
+        ep_tx_busy_flag = false;
         printf("CLOSE2\r\n");
     }
 }
diff --git a/demo/audio_v2_mic_speaker_multichan_template.c b/demo/audio_v2_mic_speaker_multichan_template.c
index c0b2042c..e8afabe6 100644
--- a/demo/audio_v2_mic_speaker_multichan_template.c
+++ b/demo/audio_v2_mic_speaker_multichan_template.c
@@ -275,7 +275,7 @@ void usbd_audio_open(uint8_t busid, uint8_t intf)
 void usbd_audio_close(uint8_t busid, uint8_t intf)
 {
     if (intf == 1) {
-        rx_flag = 1;
+        rx_flag = 0;
         USB_LOG_RAW("CLOSE1\r\n");
     } else {
         tx_flag = 0;
diff --git a/demo/video_audiov1_hid_template.c b/demo/video_audiov1_hid_template.c
new file mode 100644
index 00000000..b6db642b
--- /dev/null
+++ b/demo/video_audiov1_hid_template.c
@@ -0,0 +1,518 @@
+/*
+ * Copyright (c) 2024, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbd_core.h"
+#include "usbd_video.h"
+#include "usbd_audio.h"
+#include "usbd_hid.h"
+#include "cherryusb_mjpeg.h"
+
+#define VIDEO_IN_EP  0x81
+#define VIDEO_INT_EP 0x86
+
+#ifdef CONFIG_USB_HS
+#define MAX_PAYLOAD_SIZE  1024 // for high speed with one transcations every one micro frame
+#define VIDEO_PACKET_SIZE (unsigned int)(((MAX_PAYLOAD_SIZE / 1)) | (0x00 << 11))
+
+// #define MAX_PAYLOAD_SIZE  2048 // for high speed with two transcations every one micro frame
+// #define VIDEO_PACKET_SIZE (unsigned int)(((MAX_PAYLOAD_SIZE / 2)) | (0x01 << 11))
+
+// #define MAX_PAYLOAD_SIZE  3072 // for high speed with three transcations every one micro frame
+// #define VIDEO_PACKET_SIZE (unsigned int)(((MAX_PAYLOAD_SIZE / 3)) | (0x02 << 11))
+
+#else
+#define MAX_PAYLOAD_SIZE  1020
+#define VIDEO_PACKET_SIZE (unsigned int)(((MAX_PAYLOAD_SIZE / 1)) | (0x00 << 11))
+#endif
+
+#define WIDTH  (unsigned int)(640)
+#define HEIGHT (unsigned int)(480)
+
+#define CAM_FPS        (30)
+#define INTERVAL       (unsigned long)(10000000 / CAM_FPS)
+#define MIN_BIT_RATE   (unsigned long)(WIDTH * HEIGHT * 16 * CAM_FPS) //16 bit
+#define MAX_BIT_RATE   (unsigned long)(WIDTH * HEIGHT * 16 * CAM_FPS)
+#define MAX_FRAME_SIZE (unsigned long)(WIDTH * HEIGHT * 2)
+
+#define VS_HEADER_SIZ (unsigned int)(VIDEO_SIZEOF_VS_INPUT_HEADER_DESC(1, 1) + VIDEO_SIZEOF_VS_FORMAT_MJPEG_DESC + VIDEO_SIZEOF_VS_FRAME_MJPEG_DESC(1))
+
+#define USB_VIDEO_DESC_SIZ (unsigned long)(9 +                                       \
+                                           VIDEO_VC_NOEP_DESCRIPTOR_LEN +            \
+                                           9 +                                       \
+                                           VS_HEADER_SIZ +                           \
+                                           9 +                                       \
+                                           7 +                                       \
+                                           AUDIO_AC_DESCRIPTOR_INIT_LEN(2) +         \
+                                           AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC +     \
+                                           AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
+                                           AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC +    \
+                                           AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC +     \
+                                           AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
+                                           AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC +    \
+                                           AUDIO_AS_DESCRIPTOR_INIT_LEN(1) +         \
+                                           AUDIO_AS_DESCRIPTOR_INIT_LEN(1) +         \
+                                           25)
+
+#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_IN_EP  0x82
+#define AUDIO_OUT_EP 0x03
+
+#define AUDIO_IN_FU_ID  0x02
+#define AUDIO_OUT_FU_ID 0x05
+
+/* AUDIO Class Config */
+#define AUDIO_SPEAKER_FREQ            16000U
+#define AUDIO_SPEAKER_FRAME_SIZE_BYTE 2u
+#define AUDIO_SPEAKER_RESOLUTION_BIT  16u
+#define AUDIO_MIC_FREQ                16000U
+#define AUDIO_MIC_FRAME_SIZE_BYTE     2u
+#define AUDIO_MIC_RESOLUTION_BIT      16u
+
+#define AUDIO_SAMPLE_FREQ(frq) (uint8_t)(frq), (uint8_t)((frq >> 8)), (uint8_t)((frq >> 16))
+
+/* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */
+#define AUDIO_OUT_PACKET ((uint32_t)((AUDIO_SPEAKER_FREQ * AUDIO_SPEAKER_FRAME_SIZE_BYTE * 2) / 1000))
+/* 16bit(2 Bytes) 双声道(Mono:2) */
+#define AUDIO_IN_PACKET ((uint32_t)((AUDIO_MIC_FREQ * AUDIO_MIC_FRAME_SIZE_BYTE * 2) / 1000))
+
+#define AUDIO_AC_SIZ (AUDIO_SIZEOF_AC_HEADER_DESC(2) +          \
+                      AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC +     \
+                      AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
+                      AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC +    \
+                      AUDIO_SIZEOF_AC_INPUT_TERMINAL_DESC +     \
+                      AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(2, 1) + \
+                      AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC)
+
+#define HID_INT_EP          0x84
+#define HID_INT_EP_SIZE     8
+#define HID_INT_EP_INTERVAL 10
+
+#define HID_KEYBOARD_REPORT_DESC_SIZE 63
+
+const uint8_t video_audio_hid_descriptor[] = {
+    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
+    USB_CONFIG_DESCRIPTOR_INIT(USB_VIDEO_DESC_SIZ, 0x06, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
+    //VIDEO_VC_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
+    VIDEO_VC_NOEP_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
+    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x00, 0x00),
+    VIDEO_VS_INPUT_HEADER_DESCRIPTOR_INIT(0x01, VS_HEADER_SIZ, VIDEO_IN_EP, 0x00),
+    VIDEO_VS_FORMAT_MJPEG_DESCRIPTOR_INIT(0x01, 0x01),
+    VIDEO_VS_FRAME_MJPEG_DESCRIPTOR_INIT(0x01, WIDTH, HEIGHT, MIN_BIT_RATE, MAX_BIT_RATE, MAX_FRAME_SIZE, DBVAL(INTERVAL), 0x01, DBVAL(INTERVAL)),
+    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x01, 0x01),
+    /* 1.2.2.2 Standard VideoStream Isochronous Video Data Endpoint Descriptor */
+    0x07,                         /* bLength */
+    USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: ENDPOINT */
+    0x81,                         /* bEndpointAddress: IN endpoint 2 */
+    0x01,                         /* bmAttributes: Isochronous transfer type. Asynchronous synchronization type. */
+    WBVAL(VIDEO_PACKET_SIZE),     /* wMaxPacketSize */
+    0x01,                         /* bInterval: One frame interval */
+    AUDIO_AC_DESCRIPTOR_INIT(0x02, 0x03, AUDIO_AC_SIZ, 0x00, 0x03, 0x04),
+    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, 0x02, 0x0003),
+    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x02, 0x01, 0x01, 0x03, 0x00, 0x00),
+    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, 0x02),
+    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, 0x02, 0x0003),
+    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x05, 0x04, 0x01, 0x03, 0x00, 0x00),
+    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_OUTTERM_SPEAKER, 0x05),
+    AUDIO_AS_DESCRIPTOR_INIT(0x03, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET,
+                             EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)),
+    AUDIO_AS_DESCRIPTOR_INIT(0x04, 0x03, 0x02, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET,
+                             EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ)),
+    /************** Descriptor of Joystick Mouse interface ****************/
+    /* 09 */
+    0x09,                          /* bLength: Interface Descriptor size */
+    USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType: Interface descriptor type */
+    0x05,                          /* bInterfaceNumber: Number of Interface */
+    0x00,                          /* bAlternateSetting: Alternate setting */
+    0x01,                          /* bNumEndpoints */
+    0x03,                          /* bInterfaceClass: HID */
+    0x01,                          /* bInterfaceSubClass : 1=BOOT, 0=no boot */
+    0x01,                          /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */
+    0,                             /* iInterface: Index of string descriptor */
+    /******************** Descriptor of Joystick Mouse HID ********************/
+    /* 18 */
+    0x09,                    /* bLength: HID Descriptor size */
+    HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
+    0x11,                    /* bcdHID: HID Class Spec release number */
+    0x01,
+    0x00,                          /* bCountryCode: Hardware target country */
+    0x01,                          /* bNumDescriptors: Number of HID class descriptors to follow */
+    0x22,                          /* bDescriptorType */
+    HID_KEYBOARD_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */
+    0x00,
+    /******************** Descriptor of Mouse endpoint ********************/
+    /* 27 */
+    0x07,                         /* bLength: Endpoint Descriptor size */
+    USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */
+    HID_INT_EP,                   /* bEndpointAddress: Endpoint Address (IN) */
+    0x03,                         /* bmAttributes: Interrupt endpoint */
+    HID_INT_EP_SIZE,              /* wMaxPacketSize: 4 Byte max */
+    0x00,
+    HID_INT_EP_INTERVAL, /* bInterval: Polling Interval */
+    /* 34 */
+    ///////////////////////////////////////
+    /// 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 */
+    '4', 0x00,                  /* wcChar3 */
+    '0', 0x00,                  /* wcChar4 */
+    '3', 0x00,                  /* wcChar5 */
+    '1', 0x00,                  /* wcChar6 */
+    '0', 0x00,                  /* wcChar7 */
+    '0', 0x00,                  /* wcChar8 */
+    '0', 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
+};
+
+static const uint8_t hid_keyboard_report_desc[HID_KEYBOARD_REPORT_DESC_SIZE] = {
+    0x05, 0x01, // USAGE_PAGE (Generic Desktop)
+    0x09, 0x06, // USAGE (Keyboard)
+    0xa1, 0x01, // COLLECTION (Application)
+    0x05, 0x07, // USAGE_PAGE (Keyboard)
+    0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
+    0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
+    0x15, 0x00, // LOGICAL_MINIMUM (0)
+    0x25, 0x01, // LOGICAL_MAXIMUM (1)
+    0x75, 0x01, // REPORT_SIZE (1)
+    0x95, 0x08, // REPORT_COUNT (8)
+    0x81, 0x02, // INPUT (Data,Var,Abs)
+    0x95, 0x01, // REPORT_COUNT (1)
+    0x75, 0x08, // REPORT_SIZE (8)
+    0x81, 0x03, // INPUT (Cnst,Var,Abs)
+    0x95, 0x05, // REPORT_COUNT (5)
+    0x75, 0x01, // REPORT_SIZE (1)
+    0x05, 0x08, // USAGE_PAGE (LEDs)
+    0x19, 0x01, // USAGE_MINIMUM (Num Lock)
+    0x29, 0x05, // USAGE_MAXIMUM (Kana)
+    0x91, 0x02, // OUTPUT (Data,Var,Abs)
+    0x95, 0x01, // REPORT_COUNT (1)
+    0x75, 0x03, // REPORT_SIZE (3)
+    0x91, 0x03, // OUTPUT (Cnst,Var,Abs)
+    0x95, 0x06, // REPORT_COUNT (6)
+    0x75, 0x08, // REPORT_SIZE (8)
+    0x15, 0x00, // LOGICAL_MINIMUM (0)
+    0x25, 0xFF, // LOGICAL_MAXIMUM (255)
+    0x05, 0x07, // USAGE_PAGE (Keyboard)
+    0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
+    0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
+    0x81, 0x00, // INPUT (Data,Ary,Abs)
+    0xc0        // END_COLLECTION
+};
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t audio_read_buffer[AUDIO_OUT_PACKET];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t audio_write_buffer[AUDIO_IN_PACKET];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t video_packet_buffer[40 * 1024];
+
+volatile bool video_tx_flag = 0;
+volatile bool audio_tx_flag = 0;
+volatile bool audio_rx_flag = 0;
+volatile bool video_iso_tx_busy = false;
+volatile bool audio_iso_tx_busy = false;
+
+#define HID_STATE_IDLE 0
+#define HID_STATE_BUSY 1
+
+/*!< hid state ! Data can be sent only when state is idle  */
+static volatile uint8_t hid_state = HID_STATE_IDLE;
+
+static void usbd_event_handler(uint8_t busid, uint8_t event)
+{
+    switch (event) {
+        case USBD_EVENT_RESET:
+            break;
+        case USBD_EVENT_CONNECTED:
+            break;
+        case USBD_EVENT_DISCONNECTED:
+            break;
+        case USBD_EVENT_RESUME:
+            break;
+        case USBD_EVENT_SUSPEND:
+            break;
+        case USBD_EVENT_CONFIGURED:
+            video_tx_flag = 0;
+            audio_tx_flag = 0;
+            audio_rx_flag = 0;
+            video_iso_tx_busy = false;
+            audio_iso_tx_busy = false;
+            hid_state = HID_STATE_IDLE;
+            break;
+        case USBD_EVENT_SET_REMOTE_WAKEUP:
+            break;
+        case USBD_EVENT_CLR_REMOTE_WAKEUP:
+            break;
+
+        default:
+            break;
+    }
+}
+
+void usbd_video_open(uint8_t busid, uint8_t intf)
+{
+    if (intf == 1) {
+        video_tx_flag = 1;
+        USB_LOG_RAW("OPEN\r\n");
+        video_iso_tx_busy = false;
+    }
+}
+void usbd_video_close(uint8_t busid, uint8_t intf)
+{
+    if (intf == 1) {
+        USB_LOG_RAW("CLOSE\r\n");
+        video_tx_flag = 0;
+        video_iso_tx_busy = false;
+    }
+}
+
+void usbd_video_iso_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
+{
+    //USB_LOG_RAW("actual in len:%d\r\n", nbytes);
+    video_iso_tx_busy = false;
+}
+
+static struct usbd_endpoint video_in_ep = {
+    .ep_cb = usbd_video_iso_callback,
+    .ep_addr = VIDEO_IN_EP
+};
+
+void usbd_audio_open(uint8_t busid, uint8_t intf)
+{
+    if (intf == 3) {
+        audio_rx_flag = 1;
+        /* setup first out ep read transfer */
+        usbd_ep_start_read(busid, AUDIO_OUT_EP, audio_read_buffer, AUDIO_OUT_PACKET);
+        printf("OPEN1\r\n");
+    } else if (intf == 4) {
+        video_tx_flag = 1;
+        audio_iso_tx_busy = false;
+        printf("OPEN2\r\n");
+    }
+}
+
+void usbd_audio_close(uint8_t busid, uint8_t intf)
+{
+    if (intf == 3) {
+        audio_rx_flag = 0;
+        printf("CLOSE1\r\n");
+    } else if (intf == 4) {
+        video_tx_flag = 0;
+        audio_iso_tx_busy = false;
+        printf("CLOSE2\r\n");
+    }
+}
+
+void usbd_audio_out_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
+{
+    USB_LOG_RAW("actual out len:%d\r\n", nbytes);
+    usbd_ep_start_read(busid, AUDIO_OUT_EP, audio_read_buffer, AUDIO_OUT_PACKET);
+}
+
+void usbd_audio_in_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
+{
+    USB_LOG_RAW("actual in len:%d\r\n", nbytes);
+    audio_iso_tx_busy = false;
+}
+
+static struct usbd_endpoint audio_in_ep = {
+    .ep_cb = usbd_audio_in_callback,
+    .ep_addr = AUDIO_IN_EP
+};
+
+static struct usbd_endpoint audio_out_ep = {
+    .ep_cb = usbd_audio_out_callback,
+    .ep_addr = AUDIO_OUT_EP
+};
+
+void usbd_hid_int_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
+{
+    hid_state = HID_STATE_IDLE;
+}
+
+static struct usbd_endpoint hid_in_ep = {
+    .ep_cb = usbd_hid_int_callback,
+    .ep_addr = HID_INT_EP
+};
+
+struct usbd_interface intf0;
+struct usbd_interface intf1;
+
+struct usbd_interface intf2;
+struct usbd_interface intf3;
+struct usbd_interface intf4;
+
+struct usbd_interface intf5;
+
+struct audio_entity_info audio_entity_table[] = {
+    { .bEntityId = AUDIO_IN_FU_ID,
+      .bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT,
+      .ep = AUDIO_IN_EP },
+    { .bEntityId = AUDIO_OUT_FU_ID,
+      .bDescriptorSubtype = AUDIO_CONTROL_FEATURE_UNIT,
+      .ep = AUDIO_OUT_EP },
+};
+
+void composite_init(uint8_t busid, uint32_t reg_base)
+{
+    usbd_desc_register(busid, video_audio_hid_descriptor);
+    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf0, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
+    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf1, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
+    usbd_add_endpoint(busid, &video_in_ep);
+
+    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf2, 0x0100, audio_entity_table, 2));
+    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf3, 0x0100, audio_entity_table, 2));
+    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf4, 0x0100, audio_entity_table, 2));
+    usbd_add_endpoint(busid, &audio_in_ep);
+    usbd_add_endpoint(busid, &audio_out_ep);
+
+    usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_keyboard_report_desc, HID_KEYBOARD_REPORT_DESC_SIZE));
+    usbd_add_endpoint(busid, &hid_in_ep);
+
+    usbd_initialize(busid, reg_base, usbd_event_handler);
+}
+
+/* just for test, rewrite by yourself */
+void audio_test(uint8_t busid)
+{
+    while (1) {
+        if (audio_tx_flag) {
+            memset(audio_write_buffer, 'a', AUDIO_IN_PACKET);
+            audio_iso_tx_busy = true;
+            usbd_ep_start_write(busid, AUDIO_IN_EP, audio_write_buffer, AUDIO_IN_PACKET);
+            while (audio_iso_tx_busy) {
+                if (audio_tx_flag == false) {
+                    break;
+                }
+            }
+        }
+    }
+}
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t hid_write_buffer[64];
+
+void hid_keyboard_test(uint8_t busid)
+{
+    const uint8_t sendbuffer[8] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+    memcpy(hid_write_buffer, sendbuffer, 8);
+    int ret = usbd_ep_start_write(busid, HID_INT_EP, hid_write_buffer, 8);
+    if (ret < 0) {
+        return;
+    }
+    hid_state = HID_STATE_BUSY;
+    while (hid_state == HID_STATE_BUSY) {
+    }
+}
+
+void video_test(uint8_t busid)
+{
+    uint32_t out_len;
+    uint32_t packets;
+
+    (void)packets;
+    memset(video_packet_buffer, 0, 40 * 1024);
+    while (1) {
+        if (video_tx_flag) {
+            packets = usbd_video_mjpeg_payload_fill(busid, (uint8_t *)cherryusb_mjpeg, sizeof(cherryusb_mjpeg), video_packet_buffer, &out_len);
+#if 1
+            video_iso_tx_busy = true;
+            usbd_ep_start_write(busid, VIDEO_IN_EP, video_packet_buffer, out_len);
+            while (video_iso_tx_busy) {
+                if (video_tx_flag == 0) {
+                    break;
+                }
+            }
+#else
+            /* dwc2 must use this method */
+            for (uint32_t i = 0; i < packets; i++) {
+                if (i == (packets - 1)) {
+                    video_iso_tx_busy = true;
+                    usbd_ep_start_write(busid, VIDEO_IN_EP, &video_packet_buffer[i * MAX_PAYLOAD_SIZE], out_len - (packets - 1) * MAX_PAYLOAD_SIZE);
+                    while (video_iso_tx_busy) {
+                        if (video_tx_flag == 0) {
+                            break;
+                        }
+                    }
+                } else {
+                    video_iso_tx_busy = true;
+                    usbd_ep_start_write(busid, VIDEO_IN_EP, &video_packet_buffer[i * MAX_PAYLOAD_SIZE], MAX_PAYLOAD_SIZE);
+                    while (video_iso_tx_busy) {
+                        if (video_tx_flag == 0) {
+                            break;
+                        }
+                    }
+                }
+            }
+#endif
+        }
+    }
+}
\ No newline at end of file