/*
* Copyright (c) 2022, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_video.h"
struct video_entity_info {
uint8_t bDescriptorSubtype;
uint8_t bEntityId;
uint16_t wTerminalType;
};
struct usbd_video_priv {
struct video_probe_and_commit_controls probe;
struct video_probe_and_commit_controls commit;
uint8_t power_mode;
uint8_t error_code;
struct video_entity_info info[3];
uint8_t *ep_buf0;
uint8_t *ep_buf1;
bool ep_buf0_ready;
bool ep_buf1_ready;
uint32_t ep_buf0_len;
uint32_t ep_buf1_len;
uint8_t ep_buf_idx;
bool stream_finish;
uint32_t max_packets;
uint8_t *stream_buf;
uint32_t stream_len;
uint32_t stream_offset;
uint8_t stream_frameid;
uint32_t stream_headerlen;
} g_usbd_video[CONFIG_USBDEV_MAX_BUS];
static int usbd_video_control_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
uint8_t control_selector = (uint8_t)(setup->wValue >> 8);
(void)busid;
switch (control_selector) {
case VIDEO_VC_VIDEO_POWER_MODE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_SET_CUR:
break;
case VIDEO_REQUEST_GET_CUR:
break;
case VIDEO_REQUEST_GET_INFO:
break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_VC_REQUEST_ERROR_CODE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR:
(*data)[0] = 0x06;
*len = 1;
break;
case VIDEO_REQUEST_GET_INFO:
break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
default:
break;
}
return 0;
}
static int usbd_video_control_unit_terminal_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
uint8_t entity_id = (uint8_t)(setup->wIndex >> 8);
uint8_t control_selector = (uint8_t)(setup->wValue >> 8);
for (uint8_t i = 0; i < 3; i++) {
struct video_entity_info *entity_info = &g_usbd_video[busid].info[i];
if (entity_info->bEntityId == entity_id) {
switch (entity_info->bDescriptorSubtype) {
case VIDEO_VC_HEADER_DESCRIPTOR_SUBTYPE:
break;
case VIDEO_VC_INPUT_TERMINAL_DESCRIPTOR_SUBTYPE:
if (entity_info->wTerminalType == VIDEO_ITT_CAMERA) {
switch (control_selector) {
case VIDEO_CT_AE_MODE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR:
(*data)[0] = 0x08;
*len = 1;
break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_CT_EXPOSURE_TIME_ABSOLUTE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint32_t dwExposureTimeAbsolute = 2500;
memcpy(*data, (uint8_t *)&dwExposureTimeAbsolute, 4);
*len = 4;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint32_t dwExposureTimeAbsolute = 5; //0.0005sec
memcpy(*data, (uint8_t *)&dwExposureTimeAbsolute, 4);
*len = 4;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint32_t dwExposureTimeAbsolute = 2500; //0.2500sec
memcpy(*data, (uint8_t *)&dwExposureTimeAbsolute, 4);
*len = 4;
} break;
case VIDEO_REQUEST_GET_RES: {
uint32_t dwExposureTimeAbsolute = 5; //0.0005sec
memcpy(*data, (uint8_t *)&dwExposureTimeAbsolute, 4);
*len = 4;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint32_t dwExposureTimeAbsolute = 2500; //0.2500sec
memcpy(*data, (uint8_t *)&dwExposureTimeAbsolute, 4);
*len = 4;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_CT_FOCUS_ABSOLUTE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wFocusAbsolute = 0x0080;
memcpy(*data, (uint8_t *)&wFocusAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wFocusAbsolute = 0;
memcpy(*data, (uint8_t *)&wFocusAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wFocusAbsolute = 0x00ff;
memcpy(*data, (uint8_t *)&wFocusAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wFocusAbsolute = 0x0001;
memcpy(*data, (uint8_t *)&wFocusAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wFocusAbsolute = 0x0080;
memcpy(*data, (uint8_t *)&wFocusAbsolute, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_CT_ZOOM_ABSOLUTE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wObjectiveFocalLength = 0x0064;
memcpy(*data, (uint8_t *)&wObjectiveFocalLength, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wObjectiveFocalLength = 0x0064;
memcpy(*data, (uint8_t *)&wObjectiveFocalLength, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wObjectiveFocalLength = 0x00c8;
memcpy(*data, (uint8_t *)&wObjectiveFocalLength, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wObjectiveFocalLength = 0x0001;
memcpy(*data, (uint8_t *)&wObjectiveFocalLength, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wObjectiveFocalLength = 0x0064;
memcpy(*data, (uint8_t *)&wObjectiveFocalLength, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_CT_ROLL_ABSOLUTE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wRollAbsolute = 0x0000;
memcpy(*data, (uint8_t *)&wRollAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wRollAbsolute = 0x0000;
memcpy(*data, (uint8_t *)&wRollAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wRollAbsolute = 0x00ff;
memcpy(*data, (uint8_t *)&wRollAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wRollAbsolute = 0x0001;
memcpy(*data, (uint8_t *)&wRollAbsolute, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wRollAbsolute = 0x0000;
memcpy(*data, (uint8_t *)&wRollAbsolute, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_CT_FOCUS_AUTO_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wFocusAuto = 0x0000;
memcpy(*data, (uint8_t *)&wFocusAuto, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
default:
USB_LOG_WRN("Unhandled Video Class control selector 0x%02x\r\n", control_selector);
return -1;
}
} else {
USB_LOG_WRN("Unhandled Video Class wTerminalType 0x%02x\r\n", entity_info->wTerminalType);
return -2;
}
break;
case VIDEO_VC_OUTPUT_TERMINAL_DESCRIPTOR_SUBTYPE:
break;
case VIDEO_VC_SELECTOR_UNIT_DESCRIPTOR_SUBTYPE:
break;
case VIDEO_VC_PROCESSING_UNIT_DESCRIPTOR_SUBTYPE:
switch (control_selector) {
case VIDEO_PU_BACKLIGHT_COMPENSATION_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wBacklightCompensation = 0x0004;
memcpy(*data, (uint8_t *)&wBacklightCompensation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wBacklightCompensation = 0;
memcpy(*data, (uint8_t *)&wBacklightCompensation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wBacklightCompensation = 8;
memcpy(*data, (uint8_t *)&wBacklightCompensation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wBacklightCompensation = 1;
memcpy(*data, (uint8_t *)&wBacklightCompensation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wBacklightCompensation = 4;
memcpy(*data, (uint8_t *)&wBacklightCompensation, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_BRIGHTNESS_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_SET_CUR: {
//uint16_t wBrightness = (uint16_t)(*data)[1] << 8 | (uint16_t)(*data)[0];
} break;
case VIDEO_REQUEST_GET_CUR: {
uint16_t wBrightness = 0x0080;
memcpy(*data, (uint8_t *)&wBrightness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wBrightness = 0x0001;
memcpy(*data, (uint8_t *)&wBrightness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wBrightness = 0x00ff;
memcpy(*data, (uint8_t *)&wBrightness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wBrightness = 0x0001;
memcpy(*data, (uint8_t *)&wBrightness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wBrightness = 0x0080;
memcpy(*data, (uint8_t *)&wBrightness, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_CONTRAST_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wContrast = 0x0080;
memcpy(*data, (uint8_t *)&wContrast, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wContrast = 0x0001;
memcpy(*data, (uint8_t *)&wContrast, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wContrast = 0x00ff;
memcpy(*data, (uint8_t *)&wContrast, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wContrast = 0x0001;
memcpy(*data, (uint8_t *)&wContrast, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wContrast = 0x0080;
memcpy(*data, (uint8_t *)&wContrast, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_HUE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wHue = 0x0080;
memcpy(*data, (uint8_t *)&wHue, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wHue = 0x0001;
memcpy(*data, (uint8_t *)&wHue, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wHue = 0x00ff;
memcpy(*data, (uint8_t *)&wHue, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wHue = 0x0001;
memcpy(*data, (uint8_t *)&wHue, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wHue = 0x0080;
memcpy(*data, (uint8_t *)&wHue, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_SATURATION_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_MIN: {
uint16_t wSaturation = 0x0001;
memcpy(*data, (uint8_t *)&wSaturation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wSaturation = 0x00ff;
memcpy(*data, (uint8_t *)&wSaturation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wSaturation = 0x0001;
memcpy(*data, (uint8_t *)&wSaturation, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wSaturation = 0x0080;
memcpy(*data, (uint8_t *)&wSaturation, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_SHARPNESS_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_MIN: {
uint16_t wSharpness = 0x0001;
memcpy(*data, (uint8_t *)&wSharpness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wSharpness = 0x00ff;
memcpy(*data, (uint8_t *)&wSharpness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wSharpness = 0x0001;
memcpy(*data, (uint8_t *)&wSharpness, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wSharpness = 0x0080;
memcpy(*data, (uint8_t *)&wSharpness, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_GAIN_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_MIN: {
uint16_t wGain = 0;
memcpy(*data, (uint8_t *)&wGain, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wGain = 255;
memcpy(*data, (uint8_t *)&wGain, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wGain = 1;
memcpy(*data, (uint8_t *)&wGain, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wGain = 255;
memcpy(*data, (uint8_t *)&wGain, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_WHITE_BALANCE_TEMPERATURE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wWhiteBalance_Temprature = 417;
memcpy(*data, (uint8_t *)&wWhiteBalance_Temprature, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MIN: {
uint16_t wWhiteBalance_Temprature = 300;
memcpy(*data, (uint8_t *)&wWhiteBalance_Temprature, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_MAX: {
uint16_t wWhiteBalance_Temprature = 600;
memcpy(*data, (uint8_t *)&wWhiteBalance_Temprature, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_RES: {
uint16_t wWhiteBalance_Temprature = 1;
memcpy(*data, (uint8_t *)&wWhiteBalance_Temprature, 2);
*len = 2;
} break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03; //struct video_camera_capabilities
*len = 1;
break;
case VIDEO_REQUEST_GET_DEF: {
uint16_t wWhiteBalance_Temprature = 417;
memcpy(*data, (uint8_t *)&wWhiteBalance_Temprature, 2);
*len = 2;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_PU_WHITE_BALANCE_TEMPERATURE_AUTO_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR: {
uint16_t wWhiteBalance_Temprature_Auto = 1;
memcpy(*data, (uint8_t *)&wWhiteBalance_Temprature_Auto, 1);
*len = 1;
} break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
default:
g_usbd_video[busid].error_code = 0x06;
USB_LOG_WRN("Unhandled Video Class control selector 0x%02x\r\n", control_selector);
return -1;
}
break;
case VIDEO_VC_EXTENSION_UNIT_DESCRIPTOR_SUBTYPE:
break;
case VIDEO_VC_ENCODING_UNIT_DESCRIPTOR_SUBTYPE:
break;
default:
break;
}
}
}
return 0;
}
static int usbd_video_stream_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
uint8_t control_selector = (uint8_t)(setup->wValue >> 8);
switch (control_selector) {
case VIDEO_VS_PROBE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_SET_CUR:
//memcpy((uint8_t *)&g_usbd_video[busid].probe, *data, setup->wLength);
break;
case VIDEO_REQUEST_GET_CUR:
memcpy(*data, (uint8_t *)&g_usbd_video[busid].probe, setup->wLength);
*len = sizeof(struct video_probe_and_commit_controls);
break;
case VIDEO_REQUEST_GET_MIN:
case VIDEO_REQUEST_GET_MAX:
case VIDEO_REQUEST_GET_RES:
case VIDEO_REQUEST_GET_DEF:
memcpy(*data, (uint8_t *)&g_usbd_video[busid].probe, setup->wLength);
*len = sizeof(struct video_probe_and_commit_controls);
break;
case VIDEO_REQUEST_GET_LEN:
(*data)[0] = sizeof(struct video_probe_and_commit_controls);
*len = 1;
break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03;
*len = 1;
break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_VS_COMMIT_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_SET_CUR:
//memcpy((uint8_t *)&g_usbd_video[busid].commit, *data, setup->wLength);
break;
case VIDEO_REQUEST_GET_CUR:
memcpy(*data, (uint8_t *)&g_usbd_video[busid].commit, setup->wLength);
*len = sizeof(struct video_probe_and_commit_controls);
break;
case VIDEO_REQUEST_GET_MIN:
case VIDEO_REQUEST_GET_MAX:
case VIDEO_REQUEST_GET_RES:
case VIDEO_REQUEST_GET_DEF:
memcpy(*data, (uint8_t *)&g_usbd_video[busid].commit, setup->wLength);
*len = sizeof(struct video_probe_and_commit_controls);
break;
case VIDEO_REQUEST_GET_LEN:
(*data)[0] = sizeof(struct video_probe_and_commit_controls);
*len = 1;
break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x03;
*len = 1;
break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
case VIDEO_VS_STREAM_ERROR_CODE_CONTROL:
switch (setup->bRequest) {
case VIDEO_REQUEST_GET_CUR:
(*data)[0] = g_usbd_video[busid].error_code;
*len = 1;
break;
case VIDEO_REQUEST_GET_INFO:
(*data)[0] = 0x01;
*len = 1;
break;
default:
USB_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
return -1;
}
break;
default:
break;
}
return 0;
}
static int video_class_interface_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
USB_LOG_DBG("Video Class request: "
"bRequest 0x%02x\r\n",
setup->bRequest);
uint8_t intf_num = (uint8_t)setup->wIndex;
uint8_t entity_id = (uint8_t)(setup->wIndex >> 8);
if (intf_num == 0) { /* Video Control Interface */
if (entity_id == 0) {
return usbd_video_control_request_handler(busid, setup, data, len); /* Interface Control Requests */
} else {
return usbd_video_control_unit_terminal_request_handler(busid, setup, data, len); /* Unit and Terminal Requests */
}
} else if (intf_num == 1) { /* Video Stream Inteface */
return usbd_video_stream_request_handler(busid, setup, data, len); /* Interface Stream Requests */
}
return -1;
}
static void video_notify_handler(uint8_t busid, uint8_t event, void *arg)
{
switch (event) {
case USBD_EVENT_RESET:
g_usbd_video[busid].error_code = 0;
g_usbd_video[busid].power_mode = 0;
break;
case USBD_EVENT_SET_INTERFACE: {
struct usb_interface_descriptor *intf = (struct usb_interface_descriptor *)arg;
if (intf->bAlternateSetting == 1) {
usbd_video_open(busid, intf->bInterfaceNumber);
} else {
usbd_video_close(busid, intf->bInterfaceNumber);
}
}
break;
default:
break;
}
}
static void usbd_video_probe_and_commit_controls_init(uint8_t busid, uint32_t dwFrameInterval, uint32_t dwMaxVideoFrameSize, uint32_t dwMaxPayloadTransferSize)
{
g_usbd_video[busid].probe.hintUnion.bmHint = 0x01;
g_usbd_video[busid].probe.hintUnion1.bmHint = 0;
g_usbd_video[busid].probe.bFormatIndex = 1;
g_usbd_video[busid].probe.bFrameIndex = 1;
g_usbd_video[busid].probe.dwFrameInterval = dwFrameInterval;
g_usbd_video[busid].probe.wKeyFrameRate = 0;
g_usbd_video[busid].probe.wPFrameRate = 0;
g_usbd_video[busid].probe.wCompQuality = 0;
g_usbd_video[busid].probe.wCompWindowSize = 0;
g_usbd_video[busid].probe.wDelay = 0;
g_usbd_video[busid].probe.dwMaxVideoFrameSize = dwMaxVideoFrameSize;
g_usbd_video[busid].probe.dwMaxPayloadTransferSize = dwMaxPayloadTransferSize;
g_usbd_video[busid].probe.dwClockFrequency = 0;
g_usbd_video[busid].probe.bmFramingInfo = 0;
g_usbd_video[busid].probe.bPreferedVersion = 0;
g_usbd_video[busid].probe.bMinVersion = 0;
g_usbd_video[busid].probe.bMaxVersion = 0;
g_usbd_video[busid].commit.hintUnion.bmHint = 0x01;
g_usbd_video[busid].commit.hintUnion1.bmHint = 0;
g_usbd_video[busid].commit.bFormatIndex = 1;
g_usbd_video[busid].commit.bFrameIndex = 1;
g_usbd_video[busid].commit.dwFrameInterval = dwFrameInterval;
g_usbd_video[busid].commit.wKeyFrameRate = 0;
g_usbd_video[busid].commit.wPFrameRate = 0;
g_usbd_video[busid].commit.wCompQuality = 0;
g_usbd_video[busid].commit.wCompWindowSize = 0;
g_usbd_video[busid].commit.wDelay = 0;
g_usbd_video[busid].commit.dwMaxVideoFrameSize = dwMaxVideoFrameSize;
g_usbd_video[busid].commit.dwMaxPayloadTransferSize = dwMaxPayloadTransferSize;
g_usbd_video[busid].commit.dwClockFrequency = 0;
g_usbd_video[busid].commit.bmFramingInfo = 0;
g_usbd_video[busid].commit.bPreferedVersion = 0;
g_usbd_video[busid].commit.bMinVersion = 0;
g_usbd_video[busid].commit.bMaxVersion = 0;
g_usbd_video[busid].stream_frameid = 0;
g_usbd_video[busid].stream_headerlen = 2;
}
static uint32_t usbd_video_prepare_ep_buf_data(uint8_t busid, uint32_t remain, uint8_t *ep_buf)
{
struct video_payload_header *header;
uint32_t len;
uint32_t offset;
len = MIN(remain, (g_usbd_video[busid].probe.dwMaxPayloadTransferSize - g_usbd_video[busid].stream_headerlen) * g_usbd_video[busid].max_packets);
offset = 0;
while (len > 0) {
header = (struct video_payload_header *)&ep_buf[offset];
header->bHeaderLength = g_usbd_video[busid].stream_headerlen;
header->headerInfoUnion.bmheaderInfo = 0;
header->headerInfoUnion.headerInfoBits.endOfHeader = 1;
header->headerInfoUnion.headerInfoBits.endOfFrame = 0;
header->headerInfoUnion.headerInfoBits.frameIdentifier = g_usbd_video[busid].stream_frameid;
uint32_t len2 = MIN(len, g_usbd_video[busid].probe.dwMaxPayloadTransferSize - g_usbd_video[busid].stream_headerlen);
usb_memcpy(&ep_buf[offset + g_usbd_video[busid].stream_headerlen],
&g_usbd_video[busid].stream_buf[g_usbd_video[busid].stream_offset],
len2);
g_usbd_video[busid].stream_offset += len2;
len -= len2;
offset += (len2 + g_usbd_video[busid].stream_headerlen);
if (g_usbd_video[busid].stream_offset == g_usbd_video[busid].stream_len) {
header->headerInfoUnion.headerInfoBits.endOfFrame = 1;
}
}
return offset;
}
struct usbd_interface *usbd_video_init_intf(uint8_t busid,
struct usbd_interface *intf,
uint32_t dwFrameInterval,
uint32_t dwMaxVideoFrameSize,
uint32_t dwMaxPayloadTransferSize)
{
intf->class_interface_handler = video_class_interface_request_handler;
intf->class_endpoint_handler = NULL;
intf->vendor_handler = NULL;
intf->notify_handler = video_notify_handler;
g_usbd_video[busid].info[0].bDescriptorSubtype = VIDEO_VC_INPUT_TERMINAL_DESCRIPTOR_SUBTYPE;
g_usbd_video[busid].info[0].bEntityId = 0x01;
g_usbd_video[busid].info[0].wTerminalType = VIDEO_ITT_CAMERA;
g_usbd_video[busid].info[1].bDescriptorSubtype = VIDEO_VC_OUTPUT_TERMINAL_DESCRIPTOR_SUBTYPE;
g_usbd_video[busid].info[1].bEntityId = 0x03;
g_usbd_video[busid].info[1].wTerminalType = 0x00;
g_usbd_video[busid].info[2].bDescriptorSubtype = VIDEO_VC_PROCESSING_UNIT_DESCRIPTOR_SUBTYPE;
g_usbd_video[busid].info[2].bEntityId = 0x02;
g_usbd_video[busid].info[2].wTerminalType = 0x00;
usbd_video_probe_and_commit_controls_init(busid, dwFrameInterval, dwMaxVideoFrameSize, dwMaxPayloadTransferSize);
return intf;
}
bool usbd_video_stream_split_transfer(uint8_t busid, uint8_t ep)
{
uint32_t remain;
if (g_usbd_video[busid].ep_buf1_ready && (g_usbd_video[busid].ep_buf_idx == 0)) { /* callback: buf1 ready and buf0 was sent */
g_usbd_video[busid].ep_buf0_ready = false;
g_usbd_video[busid].ep_buf_idx = 1;
usbd_ep_start_write(busid, ep, g_usbd_video[busid].ep_buf1, g_usbd_video[busid].ep_buf1_len);
} else if (g_usbd_video[busid].ep_buf0_ready && (g_usbd_video[busid].ep_buf_idx == 1)) { /* callback: buf0 ready and buf1 was sent */
g_usbd_video[busid].ep_buf1_ready = false;
g_usbd_video[busid].ep_buf_idx = 0;
usbd_ep_start_write(busid, ep, g_usbd_video[busid].ep_buf0, g_usbd_video[busid].ep_buf0_len);
} else {
if (g_usbd_video[busid].stream_finish) {
return true;
}
}
if (!g_usbd_video[busid].ep_buf0_ready) {
remain = g_usbd_video[busid].stream_len - g_usbd_video[busid].stream_offset;
if (remain == 0) {
g_usbd_video[busid].stream_frameid ^= 1;
g_usbd_video[busid].stream_finish = true;
} else {
g_usbd_video[busid].ep_buf0_len = usbd_video_prepare_ep_buf_data(busid, remain, g_usbd_video[busid].ep_buf0);
g_usbd_video[busid].ep_buf0_ready = true;
if (!g_usbd_video[busid].ep_buf1_ready) {
g_usbd_video[busid].ep_buf_idx = 0;
usbd_ep_start_write(busid, ep, g_usbd_video[busid].ep_buf0, g_usbd_video[busid].ep_buf0_len);
}
}
}
if (!g_usbd_video[busid].ep_buf1_ready) {
remain = g_usbd_video[busid].stream_len - g_usbd_video[busid].stream_offset;
if (remain == 0) {
g_usbd_video[busid].stream_frameid ^= 1;
g_usbd_video[busid].stream_finish = true;
} else {
g_usbd_video[busid].ep_buf1_len = usbd_video_prepare_ep_buf_data(busid, remain, g_usbd_video[busid].ep_buf1);
g_usbd_video[busid].ep_buf1_ready = true;
}
}
return false;
}
int usbd_video_stream_start_write(uint8_t busid, uint8_t ep, uint8_t *ep_buf0, uint8_t *ep_buf1, uint32_t ep_bufsize, uint8_t *stream_buf, uint32_t stream_len)
{
if ((usb_device_is_configured(busid) == 0) || (stream_len == 0)) {
return -1;
}
g_usbd_video[busid].ep_buf0 = ep_buf0;
g_usbd_video[busid].ep_buf1 = ep_buf1;
g_usbd_video[busid].ep_buf0_ready = false;
g_usbd_video[busid].ep_buf1_ready = false;
g_usbd_video[busid].ep_buf_idx = 0;
g_usbd_video[busid].stream_finish = false;
g_usbd_video[busid].max_packets = ep_bufsize / g_usbd_video[busid].probe.dwMaxPayloadTransferSize;
g_usbd_video[busid].stream_buf = stream_buf;
g_usbd_video[busid].stream_len = stream_len;
g_usbd_video[busid].stream_offset = 0;
usbd_video_stream_split_transfer(busid, ep);
return 0;
}