134 lines
3.7 KiB
C
134 lines
3.7 KiB
C
/**
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* @file usbd_video.c
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*
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* Copyright (c) 2021 Bouffalolab team
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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*/
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#include "usbd_core.h"
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#include "usbd_video.h"
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extern struct video_probe_and_commit_controls probe;
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extern struct video_probe_and_commit_controls commit;
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int video_class_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
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{
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USBD_LOG_DBG("Video Class request: "
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"bRequest 0x%02x\r\n",
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setup->bRequest);
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switch (setup->bRequest) {
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case VIDEO_REQUEST_SET_CUR:
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if (setup->wValue == 256) {
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memcpy((uint8_t *)&probe, *data, setup->wLength);
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} else if (setup->wValue == 512) {
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memcpy((uint8_t *)&commit, *data, setup->wLength);
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}
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break;
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case VIDEO_REQUEST_GET_CUR:
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if (setup->wValue == 256) {
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*data = (uint8_t *)&probe;
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} else if (setup->wValue == 512) {
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*data = (uint8_t *)&commit;
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}
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break;
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case VIDEO_REQUEST_GET_MIN:
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if (setup->wValue == 256) {
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*data = (uint8_t *)&probe;
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} else if (setup->wValue == 512) {
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*data = (uint8_t *)&commit;
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}
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break;
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case VIDEO_REQUEST_GET_MAX:
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if (setup->wValue == 256) {
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*data = (uint8_t *)&probe;
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} else if (setup->wValue == 512) {
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*data = (uint8_t *)&commit;
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}
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break;
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case VIDEO_REQUEST_GET_RES:
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break;
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case VIDEO_REQUEST_GET_LEN:
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break;
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case VIDEO_REQUEST_GET_INFO:
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break;
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case VIDEO_REQUEST_GET_DEF:
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if (setup->wLength == 256) {
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*data = (uint8_t *)&probe;
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} else if (setup->wLength == 512) {
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*data = (uint8_t *)&commit;
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}
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break;
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default:
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USBD_LOG_WRN("Unhandled Video Class bRequest 0x%02x\r\n", setup->bRequest);
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return -1;
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}
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return 0;
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}
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void video_notify_handler(uint8_t event, void *arg)
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{
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switch (event) {
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case USB_EVENT_RESET:
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break;
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case USB_EVENT_SOF:
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usbd_video_sof_callback();
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break;
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case USB_EVENT_SET_INTERFACE:
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usbd_video_set_interface_callback(((uint8_t *)arg)[3]);
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break;
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default:
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break;
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}
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}
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void usbd_video_add_interface(usbd_class_t *class, usbd_interface_t *intf)
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{
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static usbd_class_t *last_class = NULL;
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if (last_class != class) {
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last_class = class;
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usbd_class_register(class);
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}
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intf->class_handler = video_class_request_handler;
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intf->custom_handler = NULL;
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intf->vendor_handler = NULL;
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intf->notify_handler = video_notify_handler;
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usbd_class_add_interface(class, intf);
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} |