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add usb host video class

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sakumisu
2022-09-23 22:02:03 +08:00
parent 4cf4e9ea62
commit 07e15636ed
4 changed files with 643 additions and 0 deletions
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570
class/video/usbh_video.c Normal file
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/*
* Copyright (c) 2022, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbh_core.h"
#include "usbh_video.h"
#define DEV_FORMAT "/dev/video%d"
/* general descriptor field offsets */
#define DESC_bLength 0 /** Length offset */
#define DESC_bDescriptorType 1 /** Descriptor type offset */
#define DESC_bDescriptorSubType 2 /** Descriptor subtype offset */
#define DESC_bNumFormats 3 /** Descriptor numformat offset */
#define DESC_bNumFrameDescriptors 4 /** Descriptor numframe offset */
#define DESC_bFormatIndex 3 /** Descriptor format index offset */
#define DESC_bFrameIndex 3 /** Descriptor frame index offset */
/* interface descriptor field offsets */
#define INTF_DESC_bInterfaceNumber 2 /** Interface number offset */
#define INTF_DESC_bAlternateSetting 3 /** Alternate setting offset */
static uint32_t g_devinuse = 0;
USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_video_buf[128];
static const char *format_type[] = { "uncompressed", "mjpeg" };
static int __s_r_1370705v[256] = { 0 };
static int __s_b_1732446u[256] = { 0 };
static int __s_g_337633u[256] = { 0 };
static int __s_g_698001v[256] = { 0 };
static void inityuyv2rgb_table(void)
{
for (int i = 0; i < 256; i++) {
__s_r_1370705v[i] = (1.370705 * (i - 128));
__s_b_1732446u[i] = (1.732446 * (i - 128));
__s_g_337633u[i] = (0.337633 * (i - 128));
__s_g_698001v[i] = (0.698001 * (i - 128));
}
}
static void yuyv2rgb565(void *input, void *output, uint32_t len)
{
int y0, u, y1, v;
uint8_t r, g, b;
int val;
for (uint32_t i = 0; i < len / 4; i++) {
y0 = (int)(((uint8_t *)input)[i * 4 + 0]);
u = (int)(((uint8_t *)input)[i * 4 + 1]);
y1 = (int)(((uint8_t *)input)[i * 4 + 2]);
v = (int)(((uint8_t *)input)[i * 4 + 3]);
val = y0 + __s_r_1370705v[v];
r = (val < 0) ? 0 : ((val > 255) ? 255 : (uint8_t)val);
val = y0 - __s_g_337633u[u] - __s_g_698001v[v];
g = (val < 0) ? 0 : ((val > 255) ? 255 : (uint8_t)val);
val = y0 + __s_b_1732446u[u];
b = (val < 0) ? 0 : ((val > 255) ? 255 : (uint8_t)val);
((uint16_t *)output)[i * 2] = (uint16_t)(b >> 3) | ((uint16_t)(g >> 2) << 5) | ((uint16_t)(r >> 3) << 11);
val = y1 + __s_r_1370705v[v];
r = (val < 0) ? 0 : ((val > 255) ? 255 : (uint8_t)val);
val = y1 - __s_g_337633u[u] - __s_g_698001v[v];
g = (val < 0) ? 0 : ((val > 255) ? 255 : (uint8_t)val);
val = y1 + __s_b_1732446u[u];
b = (val < 0) ? 0 : ((val > 255) ? 255 : (uint8_t)val);
((uint16_t *)output)[i * 2 + 1] = (uint16_t)(b >> 3) | ((uint16_t)(g >> 2) << 5) | ((uint16_t)(r >> 3) << 11);
}
}
/****************************************************************************
* Name: usbh_video_devno_alloc
*
* Description:
* Allocate a unique /dev/video[n] minor number in the range 0-31.
*
****************************************************************************/
static int usbh_video_devno_alloc(struct usbh_video *video_class)
{
size_t flags;
int devno;
flags = usb_osal_enter_critical_section();
for (devno = 0; devno < 32; devno++) {
uint32_t bitno = 1 << devno;
if ((g_devinuse & bitno) == 0) {
g_devinuse |= bitno;
video_class->minor = devno;
usb_osal_leave_critical_section(flags);
return 0;
}
}
usb_osal_leave_critical_section(flags);
return -EMFILE;
}
/****************************************************************************
* Name: usbh_video_devno_free
*
* Description:
* Free a /dev/video[n] minor number so that it can be used.
*
****************************************************************************/
static void usbh_video_devno_free(struct usbh_video *video_class)
{
int devno = video_class->minor;
if (devno >= 0 && devno < 32) {
size_t flags = usb_osal_enter_critical_section();
g_devinuse &= ~(1 << devno);
usb_osal_leave_critical_section(flags);
}
}
int usbh_video_get_cur(struct usbh_video *video_class, uint8_t intf, uint8_t entity_id, uint8_t cs, uint8_t *buf, uint16_t len)
{
struct usb_setup_packet *setup = &video_class->hport->setup;
int ret;
setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = VIDEO_REQUEST_GET_CUR;
setup->wValue = cs << 8;
setup->wIndex = (entity_id << 8) | intf;
setup->wLength = len;
ret = usbh_control_transfer(video_class->hport->ep0, setup, g_video_buf);
if (ret < 0) {
return ret;
}
memcpy(buf, g_video_buf, len);
return ret;
}
int usbh_video_set_cur(struct usbh_video *video_class, uint8_t intf, uint8_t entity_id, uint8_t cs, uint8_t *buf, uint16_t len)
{
struct usb_setup_packet *setup = &video_class->hport->setup;
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = VIDEO_REQUEST_SET_CUR;
setup->wValue = cs << 8;
setup->wIndex = (entity_id << 8) | intf;
setup->wLength = len;
memcpy(g_video_buf, buf, len);
return usbh_control_transfer(video_class->hport->ep0, setup, g_video_buf);
}
int usbh_videostreaming_get_cur_probe(struct usbh_video *video_class)
{
return usbh_video_get_cur(video_class, video_class->data_intf, 0x00, VIDEO_VS_PROBE_CONTROL, (uint8_t *)&video_class->probe, 26);
}
int usbh_videostreaming_set_cur_probe(struct usbh_video *video_class, uint8_t formatindex, uint8_t frameindex, uint32_t dwMaxVideoFrameSize, uint32_t dwMaxPayloadTransferSize)
{
video_class->probe.bFormatIndex = formatindex;
video_class->probe.bFrameIndex = frameindex;
video_class->probe.dwMaxVideoFrameSize = dwMaxVideoFrameSize;
video_class->probe.dwMaxPayloadTransferSize = dwMaxPayloadTransferSize;
return usbh_video_set_cur(video_class, video_class->data_intf, 0x00, VIDEO_VS_PROBE_CONTROL, (uint8_t *)&video_class->probe, 26);
}
int usbh_videostreaming_set_cur_commit(struct usbh_video *video_class, uint8_t formatindex, uint8_t frameindex, uint32_t dwMaxVideoFrameSize, uint32_t dwMaxPayloadTransferSize)
{
video_class->commit.bFormatIndex = formatindex;
video_class->commit.bFrameIndex = frameindex;
video_class->commit.dwMaxVideoFrameSize = dwMaxVideoFrameSize;
video_class->commit.dwMaxPayloadTransferSize = dwMaxPayloadTransferSize;
return usbh_video_set_cur(video_class, video_class->data_intf, 0x00, VIDEO_VS_COMMIT_CONTROL, (uint8_t *)&video_class->probe, 26);
}
int usbh_video_open(struct usbh_video *video_class, uint8_t altsetting)
{
struct usb_setup_packet *setup = &video_class->hport->setup;
struct usb_endpoint_descriptor *ep_desc;
uint8_t mult;
uint16_t mps;
int ret;
if (video_class->is_opened) {
return -EEXIST;
}
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_STANDARD | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = USB_REQUEST_SET_INTERFACE;
setup->wValue = altsetting;
setup->wIndex = video_class->data_intf;
setup->wLength = 0;
ret = usbh_control_transfer(video_class->hport->ep0, setup, NULL);
if (ret < 0) {
return ret;
}
ep_desc = &video_class->hport->config.intf[video_class->data_intf].altsetting[altsetting].ep[0].ep_desc;
mult = (ep_desc->wMaxPacketSize & USB_MAXPACKETSIZE_ADDITIONAL_TRANSCATION_MASK) >> USB_MAXPACKETSIZE_ADDITIONAL_TRANSCATION_SHIFT;
mps = ep_desc->wMaxPacketSize & USB_MAXPACKETSIZE_MASK;
if (ep_desc->bEndpointAddress & 0x80) {
video_class->isoin_mps = mps * (mult + 1);
usbh_hport_activate_epx(&video_class->isoin, video_class->hport, ep_desc);
} else {
video_class->isoout_mps = mps * (mult + 1);
usbh_hport_activate_epx(&video_class->isoout, video_class->hport, ep_desc);
}
USB_LOG_INFO("Open video and select altsetting:%u\r\n", altsetting);
video_class->is_opened = true;
return ret;
}
int usbh_video_close(struct usbh_video *video_class)
{
struct usb_setup_packet *setup = &video_class->hport->setup;
int ret;
setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_STANDARD | USB_REQUEST_RECIPIENT_INTERFACE;
setup->bRequest = USB_REQUEST_SET_INTERFACE;
setup->wValue = 0;
setup->wIndex = video_class->data_intf;
setup->wLength = 0;
ret = usbh_control_transfer(video_class->hport->ep0, setup, NULL);
if (ret < 0) {
return ret;
}
if (video_class->isoin) {
usbh_pipe_free(video_class->isoin);
video_class->isoin = NULL;
}
if (video_class->isoout) {
usbh_pipe_free(video_class->isoout);
video_class->isoout = NULL;
}
USB_LOG_INFO("Close video device\r\n");
video_class->is_opened = false;
return ret;
}
void usbh_video_list_info(struct usbh_video *video_class)
{
USB_LOG_INFO("============= Video device information ===================\r\n");
USB_LOG_INFO("bcdVDC:%04x\r\n", video_class->bcdVDC);
USB_LOG_INFO("bNumFormats:%u\r\n", video_class->num_of_formats);
for (uint8_t i = 0; i < video_class->num_of_formats; i++) {
USB_LOG_INFO(" FormatIndex:%u\r\n", i + 1);
USB_LOG_INFO(" FormatType:%s\r\n", format_type[video_class->format[i].format_type]);
USB_LOG_INFO(" bNumFrames:%u\r\n", video_class->format[i].num_of_frames);
USB_LOG_INFO(" Resolution:\r\n");
for (uint8_t j = 0; j < video_class->format[i].num_of_frames; j++) {
USB_LOG_INFO(" FrameIndex:%u\r\n", j + 1);
USB_LOG_INFO(" wWidth: %d, wHeight: %d\r\n",
video_class->format[i].frame[j].wWidth,
video_class->format[i].frame[j].wHeight);
}
}
usbh_videostreaming_get_cur_probe(video_class);
USB_LOG_INFO("dwMaxVideoFrameSize:%u,dwMaxPayloadTransferSize:%u\r\n", (int)video_class->probe.dwMaxVideoFrameSize, (int)video_class->probe.dwMaxPayloadTransferSize);
USB_LOG_INFO("============= Video device information ===================\r\n");
}
static int usbh_video_ctrl_intf_connect(struct usbh_hubport *hport, uint8_t intf)
{
int ret;
uint8_t cur_iface = 0xff;
uint8_t cur_alt_setting = 0xff;
uint8_t frame_index = 0xff;
uint8_t format_index = 0xff;
uint8_t num_of_frames = 0xff;
uint8_t *p;
struct usbh_video *video_class = usb_malloc(sizeof(struct usbh_video));
if (video_class == NULL) {
USB_LOG_ERR("Fail to alloc video_class\r\n");
return -ENOMEM;
}
memset(video_class, 0, sizeof(struct usbh_video));
usbh_video_devno_alloc(video_class);
video_class->hport = hport;
video_class->ctrl_intf = intf;
video_class->data_intf = intf + 1;
hport->config.intf[intf].priv = video_class;
ret = usbh_video_close(video_class);
if (ret < 0) {
USB_LOG_ERR("Fail to close video device\r\n");
return ret;
}
p = hport->raw_config_desc;
while (p[DESC_bLength]) {
switch (p[DESC_bDescriptorType]) {
case USB_DESCRIPTOR_TYPE_INTERFACE:
cur_iface = p[INTF_DESC_bInterfaceNumber];
//cur_alt_setting = p[INTF_DESC_bAlternateSetting];
break;
case USB_DESCRIPTOR_TYPE_ENDPOINT:
//ep_desc = (struct usb_endpoint_descriptor *)p;
break;
case VIDEO_CS_INTERFACE_DESCRIPTOR_TYPE:
if (cur_iface == video_class->ctrl_intf) {
switch (p[DESC_bDescriptorSubType]) {
case VIDEO_VC_HEADER_DESCRIPTOR_SUBTYPE:
video_class->bcdVDC = ((uint16_t)p[4] << 8) | (uint16_t)p[3];
break;
case VIDEO_VC_INPUT_TERMINAL_DESCRIPTOR_SUBTYPE:
break;
case VIDEO_VC_OUTPUT_TERMINAL_DESCRIPTOR_SUBTYPE:
break;
case VIDEO_VC_PROCESSING_UNIT_DESCRIPTOR_SUBTYPE:
break;
default:
break;
}
} else if (cur_iface == video_class->data_intf) {
switch (p[DESC_bDescriptorSubType]) {
case VIDEO_VS_INPUT_HEADER_DESCRIPTOR_SUBTYPE:
video_class->num_of_formats = p[DESC_bNumFormats];
break;
case VIDEO_VS_FORMAT_UNCOMPRESSED_DESCRIPTOR_SUBTYPE:
format_index = p[DESC_bFormatIndex];
num_of_frames = p[DESC_bNumFrameDescriptors];
video_class->format[format_index - 1].num_of_frames = num_of_frames;
video_class->format[format_index - 1].format_type = USBH_VIDEO_FORMAT_UNCOMPRESSED;
break;
case VIDEO_VS_FORMAT_MJPEG_DESCRIPTOR_SUBTYPE:
format_index = p[DESC_bFormatIndex];
num_of_frames = p[DESC_bNumFrameDescriptors];
video_class->format[format_index - 1].num_of_frames = num_of_frames;
video_class->format[format_index - 1].format_type = USBH_VIDEO_FORMAT_MJPEG;
break;
case VIDEO_VS_FRAME_UNCOMPRESSED_DESCRIPTOR_SUBTYPE:
frame_index = p[DESC_bFrameIndex];
video_class->format[format_index - 1].frame[frame_index - 1].wWidth = ((struct video_cs_if_vs_frame_uncompressed_descriptor *)p)->wWidth;
video_class->format[format_index - 1].frame[frame_index - 1].wHeight = ((struct video_cs_if_vs_frame_uncompressed_descriptor *)p)->wHeight;
break;
case VIDEO_VS_FRAME_MJPEG_DESCRIPTOR_SUBTYPE:
frame_index = p[DESC_bFrameIndex];
video_class->format[format_index - 1].frame[frame_index - 1].wWidth = ((struct video_cs_if_vs_frame_mjpeg_descriptor *)p)->wWidth;
video_class->format[format_index - 1].frame[frame_index - 1].wHeight = ((struct video_cs_if_vs_frame_mjpeg_descriptor *)p)->wHeight;
break;
default:
break;
}
}
break;
default:
break;
}
/* skip to next descriptor */
p += p[DESC_bLength];
}
usbh_video_list_info(video_class);
snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, video_class->minor);
inityuyv2rgb_table();
USB_LOG_INFO("Register Video Class:%s\r\n", hport->config.intf[intf].devname);
return 0;
}
static int usbh_video_ctrl_intf_disconnect(struct usbh_hubport *hport, uint8_t intf)
{
int ret = 0;
struct usbh_video *video_class = (struct usbh_video *)hport->config.intf[intf].priv;
if (video_class) {
usbh_video_devno_free(video_class);
if (video_class->isoin) {
usbh_pipe_free(video_class->isoin);
}
if (video_class->isoout) {
usbh_pipe_free(video_class->isoout);
}
memset(video_class, 0, sizeof(struct usbh_video));
usb_free(video_class);
if (hport->config.intf[intf].devname[0] != '\0')
USB_LOG_INFO("Unregister Video Class:%s\r\n", hport->config.intf[intf].devname);
}
return ret;
}
static int usbh_video_data_intf_connect(struct usbh_hubport *hport, uint8_t intf)
{
USB_LOG_WRN("Ignore video data intf\r\n");
return 0;
}
static int usbh_video_data_intf_disconnect(struct usbh_hubport *hport, uint8_t intf)
{
return 0;
}
void usbh_videostreaming_parse_mjpeg(struct usbh_urb *urb, struct usbh_videostreaming *stream)
{
struct usbh_iso_frame_packet *iso_packet;
uint32_t num_of_iso_packets;
uint8_t *tmp_buf;
uint8_t data_offset;
uint32_t data_len;
num_of_iso_packets = urb->num_of_iso_packets;
iso_packet = urb->iso_packet;
for (uint32_t i = 0; i < num_of_iso_packets; i++) {
/*
uint8_t frameIdentifier : 1U;
uint8_t endOfFrame : 1U;
uint8_t presentationTimeStamp : 1U;
uint8_t sourceClockReference : 1U;
uint8_t reserved : 1U;
uint8_t stillImage : 1U;
uint8_t errorBit : 1U;
uint8_t endOfHeader : 1U;
*/
if (iso_packet[i].actual_length < iso_packet[i].transfer_buffer[0]) {
return;
}
if (iso_packet[i].transfer_buffer[1] & (1 << 6)) {
stream->bufoffset = 0;
continue;
}
if (iso_packet[i].actual_length == 0) { /* skip */
stream->bufoffset = 0;
continue;
}
if (iso_packet[i].actual_length == iso_packet[i].transfer_buffer[0]) { /* skip frame header */
stream->bufoffset = 0;
continue;
}
data_offset = iso_packet[i].transfer_buffer[0];
data_len = iso_packet[i].actual_length - iso_packet[i].transfer_buffer[0];
tmp_buf = stream->bufbase + stream->bufoffset;
stream->bufoffset += data_len;
memcpy(tmp_buf, &iso_packet[i].transfer_buffer[data_offset], data_len);
if ((stream->bufbase[0] != 0xff) && (stream->bufbase[1] != 0xd8)) {
stream->bufoffset = 0;
continue;
}
if (iso_packet[i].transfer_buffer[1] & (1 << 1)) {
if ((stream->bufbase[stream->bufoffset - 2] != 0xff) && (stream->bufbase[stream->bufoffset - 1] != 0xd9)) {
stream->bufoffset = 0;
continue;
}
if (stream->video_one_frame_callback) {
stream->video_one_frame_callback(stream);
}
stream->bufoffset = 0;
}
}
}
void usbh_videostreaming_parse_yuyv2rgb565(struct usbh_urb *urb, struct usbh_videostreaming *stream)
{
struct usbh_iso_frame_packet *iso_packet;
uint32_t num_of_iso_packets;
uint8_t *tmp_buf;
uint8_t data_offset;
uint32_t data_len;
num_of_iso_packets = urb->num_of_iso_packets;
iso_packet = urb->iso_packet;
for (uint32_t i = 0; i < num_of_iso_packets; i++) {
/*
uint8_t frameIdentifier : 1U;
uint8_t endOfFrame : 1U;
uint8_t presentationTimeStamp : 1U;
uint8_t sourceClockReference : 1U;
uint8_t reserved : 1U;
uint8_t stillImage : 1U;
uint8_t errorBit : 1U;
uint8_t endOfHeader : 1U;
*/
if (iso_packet[i].actual_length < iso_packet[i].transfer_buffer[0]) {
return;
}
if (iso_packet[i].transfer_buffer[1] & (1 << 6)) {
stream->bufoffset = 0;
continue;
}
if (iso_packet[i].actual_length == 0) { /* skip */
stream->bufoffset = 0;
continue;
}
if (iso_packet[i].actual_length == iso_packet[i].transfer_buffer[0]) { /* skip frame header */
stream->bufoffset = 0;
continue;
}
data_offset = iso_packet[i].transfer_buffer[0];
data_len = iso_packet[i].actual_length - iso_packet[i].transfer_buffer[0];
tmp_buf = stream->bufbase + stream->bufoffset;
stream->bufoffset += data_len;
yuyv2rgb565(&iso_packet[i].transfer_buffer[data_offset], tmp_buf, data_len);
if (iso_packet[i].transfer_buffer[1] & (1 << 1)) {
if (stream->video_one_frame_callback) {
stream->video_one_frame_callback(stream);
}
stream->bufoffset = 0;
}
}
}
const struct usbh_class_driver video_class_ctrl_intf_driver = {
.driver_name = "video",
.connect = usbh_video_ctrl_intf_connect,
.disconnect = usbh_video_ctrl_intf_disconnect
};
const struct usbh_class_driver video_class_data_intf_driver = {
.driver_name = "video",
.connect = usbh_video_data_intf_connect,
.disconnect = usbh_video_data_intf_disconnect
};
CLASS_INFO_DEFINE const struct usbh_class_info video_ctrl_intf_class_info = {
.match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
.class = USB_DEVICE_CLASS_VIDEO,
.subclass = VIDEO_SC_VIDEOCONTROL,
.protocol = VIDEO_PC_PROTOCOL_UNDEFINED,
.vid = 0x00,
.pid = 0x00,
.class_driver = &video_class_ctrl_intf_driver
};
CLASS_INFO_DEFINE const struct usbh_class_info video_data_intf_class_info = {
.match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
.class = USB_DEVICE_CLASS_VIDEO,
.subclass = VIDEO_SC_VIDEOSTREAMING,
.protocol = VIDEO_PC_PROTOCOL_UNDEFINED,
.vid = 0x00,
.pid = 0x00,
.class_driver = &video_class_data_intf_driver
};

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class/video/usbh_video.h Normal file
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/*
* Copyright (c) 2022, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef USBH_VIDEO_H
#define USBH_VIDEO_H
#include "usb_video.h"
#define USBH_VIDEO_FORMAT_UNCOMPRESSED 0
#define USBH_VIDEO_FORMAT_MJPEG 1
struct usbh_video_resolution {
uint16_t wWidth;
uint16_t wHeight;
};
struct usbh_video_format {
struct usbh_video_resolution frame[8];
uint8_t format_type;
uint8_t num_of_frames;
};
struct usbh_videostreaming {
uint8_t *bufbase;
uint32_t bufoffset;
void (*video_one_frame_callback)(struct usbh_videostreaming *stream);
};
struct usbh_video {
struct usbh_hubport *hport;
uint8_t ctrl_intf; /* interface number */
uint8_t data_intf; /* interface number */
uint8_t minor;
usbh_pipe_t isoin; /* ISO IN endpoint */
usbh_pipe_t isoout; /* ISO OUT endpoint */
struct video_probe_and_commit_controls probe;
struct video_probe_and_commit_controls commit;
uint16_t isoin_mps;
uint16_t isoout_mps;
bool is_opened;
uint16_t bcdVDC;
uint8_t num_of_formats;
struct usbh_video_format format[3];
};
#ifdef __cplusplus
extern "C" {
#endif
int usbh_video_get_cur(struct usbh_video *video_class, uint8_t intf, uint8_t entity_id, uint8_t cs, uint8_t *buf, uint16_t len);
int usbh_video_set_cur(struct usbh_video *video_class, uint8_t intf, uint8_t entity_id, uint8_t cs, uint8_t *buf, uint16_t len);
int usbh_videostreaming_get_cur_probe(struct usbh_video *video_class);
int usbh_videostreaming_set_cur_probe(struct usbh_video *video_class, uint8_t formatindex, uint8_t frameindex, uint32_t dwMaxVideoFrameSize, uint32_t dwMaxPayloadTransferSize);
int usbh_videostreaming_set_cur_commit(struct usbh_video *video_class, uint8_t formatindex, uint8_t frameindex, uint32_t dwMaxVideoFrameSize, uint32_t dwMaxPayloadTransferSize);
int usbh_video_open(struct usbh_video *video_class, uint8_t altsetting);
int usbh_video_close(struct usbh_video *video_class);
void usbh_video_list_info(struct usbh_video *video_class);
void usbh_videostreaming_parse_mjpeg(struct usbh_urb *urb, struct usbh_videostreaming *stream);
void usbh_videostreaming_parse_yuyv2rgb565(struct usbh_urb *urb, struct usbh_videostreaming *stream);
#ifdef __cplusplus
}
#endif
#endif /* USBH_VIDEO_H */