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AC707N/SDK/apps/common/device/usb/host/uvc_host.c
T
huxi bc195654bf 初版
2025-12-03 11:12:34 +08:00

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/*****************************************************************
>file name : uvc_dev.c
>author : lichao
>create time : Tue 13 Jun 2017 04:20:02 PM HKT
*****************************************************************/
#include "device/usb_stack.h"
/* #include "asm/dma.h" */
#include "uvc_device.h"
#include "usb_config.h"
#include "host_uvc.h"
#include "video_ioctl.h"
/* #include "video/video.h" */
#include "videobuf.h"
#include "generic/list.h"
#include "os/os_api.h"
#include "os/os_type.h"
#include "app_config.h"
#if TCFG_HOST_UVC_ENABLE
#define LOG_TAG_CONST USB
#define LOG_TAG "[UVC_HOST]"
#define LOG_ERROR_ENABLE
#define LOG_DEBUG_ENABLE
#define LOG_INFO_ENABLE
/* #define LOG_DUMP_ENABLE */
#define LOG_CLI_ENABLE
#include "debug.h"
#define UVC_CHANNEL_MAX 2
#define UVC_REC_JPG_HEAD_SIZE 8
#define UVC_REC_JPG_ALIGN 512
#define UVC_JPEG_HEAD 0xE0FFD8FF
#define UVC_JPEG_HEAD1 0xC0FFD8FF
#define USB_DMA_CP_ENABLE (0)//注意：使用硬件dma copy需要异步接收推送数据，否则出现速度快数据错乱的问题
#ifdef CONFIG_UI_ENABLE
#define UVC_RECV_BUFF_SHARE 0 //1:UVC接收数据不受应用层缓存影响，使用共享帧单独给UVC一直接收数据，使用uvc_host_jpg_callback_register注册进行数据获取，应用在屏显等
#else
#define UVC_RECV_BUFF_SHARE 0
#endif
#define UVC_RECV_BUFF_SHARE_SIZE (100*1024) //UVC一帧JPEG大小，建议100K
#define ADDR_ALIGNE(addr,align) ((addr + (align - 1)) / align * align)
static void (*uvc_host_jpg_cb)(char *jpg_buf, u32 jpg_len);
void uvc_host_jpg_callback_register(void (*cb)(char *jpg_buf, u32 jpg_len))
{
uvc_host_jpg_cb = cb;
}
static int uvc_jpeg_head_check(u32 head)
{
if (uvc_host_get_fmt()) {
return true;
}
if (head == UVC_JPEG_HEAD) {
return true;
} else if (head == UVC_JPEG_HEAD1) {
return true;
}
return 0;
}
struct uvc_dev_control {
OS_SEM sem;
struct list_head dev_list;
};
struct mjpg_uvc_image {
u8 *buf;
u32 size;
};
struct uvc_fh {
u8 id;
u8 eof;
u8 fps;
u8 real_fps;
u8 drop_frame;
u8 streamon;
volatile u8 streamoff;
u8 uvc_out;
u8 channel;
u8 alloc_channel;
u8 open[UVC_CHANNEL_MAX];
u8 streamon_ch[UVC_CHANNEL_MAX];
u32 frame_cnt;
u32 drop_frame_cnt;
struct list_head entry;
int free_size;
u8 *buf;
u8 *share_buf;
int b_offset;
/* dma_user_task_t dma_list[16]; */
u8 bfmode;
u8 uvc_video_q;
void *ppbuf;
struct videobuf_queue video_q;
struct video_device *video_dev[UVC_CHANNEL_MAX];
struct device device[UVC_CHANNEL_MAX];
void *private_data;
OS_SEM sem;
OS_SEM img_sem;
struct mjpg_uvc_image img;
volatile u8 image_req;
};
static struct uvc_dev_control uvc_dev;
#define __this (&uvc_dev)
#define list_for_each_uvc(fh) \
list_for_each_entry(fh, &__this->dev_list, entry)
#define list_add_uvc(fh) \
list_add(&fh->entry, &__this->dev_list)
#define list_del_uvc(fh) \
list_del(&fh->entry);
static int uvc_img_cap(void *_fh, u32 arg)
{
struct uvc_fh *fh = (struct uvc_fh *)_fh;
struct video_image_capture *icap = (struct video_image_capture *)arg;
u32 *head;
int err = 0;
if (!icap) {
return -EINVAL;
}
if (fh) {
fh->img.buf = icap->baddr;
fh->img.size = icap->size;
os_sem_create(&fh->img_sem, 0);
err = os_sem_pend(&fh->img_sem, 500);
if (err) {
log_error("image err");
}
fh->image_req = false;
head = (u32 *)(fh->img.buf + 8);
if (uvc_jpeg_head_check(*head)) {
fh->img.size -= 8;
memcpy(icap->baddr, icap->baddr + 8, fh->img.size);
}
os_sem_del(&fh->img_sem, OS_DEL_ALWAYS);
if (icap->size < fh->img.size) {
log_error("image capture size is too small !!!");
} else if (!err) {
log_info("image capture : %d.%dKB", fh->img.size / 1024, (fh->img.size % 1024) * 10 / 1024);
}
icap->size = fh->img.size;
return err;
} else {
log_error("image err in on open uvc");
}
return err;
}
void *uvc_buf_malloc(struct uvc_fh *fh, u32 size, u8 channel)//uvc视频流内存申请
{
void *b;
if (fh->uvc_video_q) {
struct videobuf_buffer *vb;
vb = videobuf_stream_alloc(&fh->video_q, size);
if (!vb) {
return NULL;
}
vb->len = size;
// printf("video_buf: %x\n", vb, vb->data);
return vb->data;
}
if (!channel) {
for (int i = 0; i < UVC_CHANNEL_MAX; i++) {
if (fh->open[i] && fh->streamon_ch[i]) {
channel = i + 1;
break;
}
}
if (!channel) {
return NULL;
}
}
fh->alloc_channel = channel;
if (!fh->open[channel - 1] || !fh->streamon_ch[channel - 1]) {
return NULL;
}
struct video_device *video_dev = (struct video_device *)fh->video_dev[fh->alloc_channel - 1];
if (!video_dev) {
return NULL;
}
b = video_buf_malloc(video_dev, size);
return b;
}
void *uvc_buf_realloc(struct uvc_fh *fh, void *buf, int size, u8 channel)//uvc视频流内存重新申请
{
if (fh->uvc_video_q) {
struct videobuf_buffer *b = container_of(buf, struct videobuf_buffer, data);
b->len = size;
videobuf_stream_realloc(&fh->video_q, b, size);
return b->data;
}
if (!channel || !fh->open[channel - 1] || !fh->streamon_ch[channel - 1]) {
return NULL;
}
struct video_device *video_dev = (struct video_device *)fh->video_dev[channel - 1];
return video_buf_realloc(video_dev, buf, size);
}
void uvc_buf_free(struct uvc_fh *fh, void *buf, u8 channel)//uvc视频流内存释放
{
if (fh->uvc_video_q) {
struct videobuf_buffer *b = container_of(buf, struct videobuf_buffer, data);
ASSERT(buf != NULL, "uvc_buf_free\n");
videobuf_stream_free(&fh->video_q, b);
return;
}
if (!channel || !fh->open[channel - 1] || !fh->streamon_ch[channel - 1]) {
return;
}
struct video_device *video_dev = (struct video_device *)fh->video_dev[channel - 1];
if (!video_dev) {
return ;
}
return video_buf_free(video_dev, buf);
}
u32 uvc_buf_free_space(struct uvc_fh *fh, u8 channel)//uvc视频流内存剩余空间
{
if (fh->uvc_video_q) {
return videobuf_stream_free_space(&fh->video_q);
}
if (!channel) {
find_open:
for (int i = 0; i < UVC_CHANNEL_MAX; i++) {
if (fh->open[i] && fh->streamon_ch[i]) {
channel = i + 1;
break;
}
}
if (!channel) {
return 0;
}
fh->alloc_channel = channel;
}
if (!fh->open[channel - 1] || !fh->streamon_ch[channel - 1]) {
return 0;
}
struct video_device *video_dev = (struct video_device *)fh->video_dev[channel - 1];
if (!video_dev) {
channel = 0;
goto find_open;
}
return video_buf_free_space(video_dev);
}
void uvc_buf_stream_finish(struct uvc_fh *fh, void *buf, u8 channel)//uvc视频流推流
{
if (fh->uvc_video_q) {
struct videobuf_buffer *b = container_of(buf, struct videobuf_buffer, data);
videobuf_stream_finish(&fh->video_q, b);
return;
}
if (!channel || !buf || !fh->open[channel - 1] || !fh->streamon_ch[channel - 1]) {
return;
}
struct video_device *video_dev = (struct video_device *)fh->video_dev[channel - 1];
if (!video_dev) {
return;
}
u32 size;
if (os_sem_valid(&fh->img_sem) && fh->image_req) {//有拍照申请则复制数据到拍照缓存
size = video_buf_size(buf);
size = MIN(size, fh->img.size);
memcpy(fh->img.buf, buf, size);
fh->img.size = size;
os_sem_post(&fh->img_sem);
fh->image_req = false;
}
video_buf_stream_finish(video_dev, buf);//lbuf推流
}
static int uvc_dev_reqbufs(void *_fh, struct uvc_reqbufs *b)
{
struct uvc_fh *fh = (struct uvc_fh *)_fh;
struct video_reqbufs vb_req = {0};
vb_req.buf = b->buf;
vb_req.size = b->size;
videobuf_queue_init(&fh->video_q, 32, "uvc_dev");
fh->uvc_video_q = 1;
return videobuf_reqbufs(&fh->video_q, (struct video_reqbufs *)&vb_req);
/* return 0; */
}
static int uvc_dev_qbuf(void *_fh, struct video_buffer *b)
{
struct uvc_fh *fh = (struct uvc_fh *)_fh;
return videobuf_qbuf(&fh->video_q, b);
/* return 0; */
}
static int uvc_dev_dqbuf(void *_fh, struct video_buffer *b)
{
struct uvc_fh *fh = (struct uvc_fh *)_fh;
if (fh->uvc_out) {
return -ENODEV;
}
if (!fh->streamon) {
return -ENODEV;
}
return videobuf_dqbuf(&fh->video_q, b);
/* return 0; */
}
int uvc_mjpg_stream_out(void *fd, int cnt, void *stream_list, int state)
{
struct uvc_fh *fh = (struct uvc_fh *)fd;
struct uvc_stream_list *list = (struct uvc_stream_list *)stream_list;
int i;
int err = 0;
u32 tmp_jiffies = 0, req_size;
if ((cnt < 0) || !list) {
/*putchar('E');*/
if (fh->buf) {
if (fh->buf != fh->share_buf) {//没有多通道共享内存才释放
uvc_buf_free(fh, fh->buf, fh->alloc_channel);
}
fh->buf = NULL;
if (state != STREAM_SOF) { // eof == 2 next frame start
fh->drop_frame = 1;
}
err = -EINVAL;
} else if (state == STREAM_SOF) {
fh->drop_frame = 0;
}
goto _exit;
}
if (fh->drop_frame) {
if (state == STREAM_EOF) {
fh->drop_frame = 0;
}
goto _exit;
}
if (!fh->buf) {
if (fh->share_buf) {//有共享内存则使用共享内存大小（一般打开两个通道或者开启UI）
fh->buf = fh->share_buf;
fh->free_size = uvc_host_get_fmt() ? UVC_RECV_BUFF_SHARE_SIZE : UVC_RECV_BUFF_SHARE_SIZE - UVC_REC_JPG_ALIGN;
fh->alloc_channel = 0;
} else {//没有使用共享内存，则请求剩余空间足够再申请内存
fh->free_size = uvc_buf_free_space(fh, fh->alloc_channel);
if (fh->free_size > 1024) {
fh->buf = uvc_buf_malloc(fh, fh->free_size, fh->alloc_channel);
if (!uvc_host_get_fmt()) {
fh->free_size -= UVC_REC_JPG_ALIGN;//减512防止realloc时512对齐断言
}
}
}
if (!fh->buf) {
err = -ENOMEM;
goto _exit;
}
fh->b_offset = 0;
}
for (i = 0; i < cnt; i++) {
if ((fh->b_offset + list[i].length + UVC_REC_JPG_HEAD_SIZE) > fh->free_size) {//数据超过当前可用的内存空间则释放当前帧
if (fh->buf != fh->share_buf) {
uvc_buf_free(fh, fh->buf, fh->alloc_channel);
}
fh->buf = NULL;
fh->drop_frame = 1;
putchar('d');
err = -EFAULT;
goto _exit;
}
//复制数据到buf缓存
#if USB_DMA_CP_ENABLE
fh->dma_list[i].src_addr = list[i].addr;
fh->dma_list[i].dst_addr = fh->buf + UVC_REC_JPG_HEAD_SIZE + fh->b_offset;
fh->dma_list[i].len = list[i].length;
#else
memcpy(fh->buf + UVC_REC_JPG_HEAD_SIZE + fh->b_offset, list[i].addr, list[i].length);
#endif
fh->b_offset += list[i].length;
}
#if USB_DMA_CP_ENABLE
dma_task_list_copy(fh->dma_list, cnt);//注意：使用硬件dma copy需要异步接收推送数据，否则出现速度快数据错乱的问题
#endif
if (state == STREAM_EOF) {//USB结束帧则表明一帧图像数据接收完成
fh->frame_cnt++;
#ifdef CONFIG_UVC_DROP_FRAME_ENABLE
if (fh->real_fps && fh->fps && fh->real_fps < fh->fps) {//检测USB的帧率和当前应用层请求的帧率是否一直是否需要丢帧处理
u32 drop = fh->frame_cnt * (fh->fps - fh->real_fps) / fh->fps;
if (fh->drop_frame_cnt != drop) {//不一致需要丢帧处理
fh->drop_frame_cnt = drop;
if (fh->buf != fh->share_buf) {//丢帧
uvc_buf_free(fh, fh->buf, fh->alloc_channel);
}
fh->buf = NULL;
goto _exit;
}
}
#endif
if (uvc_host_get_fmt()) {
req_size = fh->b_offset + UVC_REC_JPG_HEAD_SIZE;
} else {
req_size = ADDR_ALIGNE(fh->b_offset + UVC_REC_JPG_HEAD_SIZE, UVC_REC_JPG_ALIGN);//JPEG图像数据需要512对齐
}
if (uvc_host_jpg_cb) {//有注册回调则先进入回调函数
uvc_host_jpg_cb((char *)fh->buf + UVC_REC_JPG_HEAD_SIZE, fh->b_offset);
}
if (fh->buf == fh->share_buf && fh->share_buf) {//共享数据，则为多通道
for (int ch = 1; ch <= UVC_CHANNEL_MAX; ch++) {//多个通道检测
if (uvc_buf_free_space(fh, ch) > 1024) {//检测剩余空间足够用再申请复制数据
u8 *pbuf = uvc_buf_malloc(fh, req_size, ch);
if (pbuf) {
memcpy(pbuf + UVC_REC_JPG_HEAD_SIZE, fh->buf + UVC_REC_JPG_HEAD_SIZE, fh->b_offset);
fh->buf = pbuf;
if (fh->buf) {
uvc_buf_stream_finish(fh, fh->buf, ch);//推流往应用层
}
}
}
}
} else {//单通道
fh->buf = uvc_buf_realloc(fh, fh->buf, req_size, fh->alloc_channel);//重新申请内存，会释放多余的空间
if (fh->buf) {
uvc_buf_stream_finish(fh, fh->buf, fh->alloc_channel);//推流往应用层
}
}
fh->buf = NULL;
}
_exit:
fh->streamoff = 0;
return err;
}
int uvc_h264_stream_out(void *fd, int cnt, void *stream_list, int state)
{
struct uvc_fh *fh = (struct uvc_fh *)fd;
struct uvc_stream_list *list = (struct uvc_stream_list *)stream_list;
int i;
int err = 0;
u32 tmp_jiffies = 0;
if ((cnt < 0) || !list) {
/* putchar('E'); */
if (fh->buf) {
if (fh->buf != fh->share_buf) {//没有多通道共享内存才释放
uvc_buf_free(fh, fh->buf, 0);
}
fh->buf = NULL;
if (state != STREAM_SOF) { // eof == 2 next frame start
fh->drop_frame = 1;
}
err = -EINVAL;
} else if (state == STREAM_SOF) {
fh->drop_frame = 0;
}
goto _exit;
}
if (fh->drop_frame) {
/* puts("drop\n"); */
if (state == STREAM_EOF) {
fh->drop_frame = 0;
}
goto _exit;
}
if (!fh->buf) {
fh->free_size = uvc_buf_free_space(fh, 0);
if (fh->free_size > 1024) {
fh->buf = uvc_buf_malloc(fh, fh->free_size, 0);
}
if (!fh->buf) {
/* puts("no mem\n"); */
err = -ENOMEM;
goto _exit;
}
fh->b_offset = 0;
}
for (i = 0; i < cnt; i++) {
if ((fh->b_offset + list[i].length) > fh->free_size) {
uvc_buf_free(fh, fh->buf, 0);
fh->buf = NULL;
fh->drop_frame = 1;
putchar('d');
/* printf("%d", fh->id); */
err = -EFAULT;
goto _exit;
}
#if USB_DMA_CP_ENABLE
fh->dma_list[i].src_addr = list[i].addr;
fh->dma_list[i].dst_addr = fh->buf + fh->b_offset;
fh->dma_list[i].len = list[i].length;
#else
memcpy(fh->buf + fh->b_offset, list[i].addr, list[i].length);
#endif
fh->b_offset += list[i].length;
}
#if USB_DMA_CP_ENABLE
dma_task_list_copy(fh->dma_list, cnt);
#endif
if (state == STREAM_EOF) {
/* puts("h264\n"); */
fh->buf = uvc_buf_realloc(fh, fh->buf, fh->b_offset, 0);
uvc_buf_stream_finish(fh, fh->buf, 0);
fh->buf = NULL;
}
_exit:
fh->streamoff = 0;
return err;
}
static int uvc_stream_on(void *device, void *_fh, int index)
{
int err = 0;
u8 channel = 0;
struct uvc_fh *fh = (struct uvc_fh *)_fh;
os_sem_pend(&fh->sem, 0);
for (int i = 0; i < UVC_CHANNEL_MAX; i++) {
if ((u32)(&fh->device[i]) == (u32)device) {
channel = i + 1;
break;
}
}
ASSERT(channel, "err int uvc_stream_on\n");
if (fh->uvc_out) {
os_sem_post(&fh->sem);
return -EINVAL;
}
fh->eof = 1;
fh->drop_frame = 0;
if (fh->streamon) {
fh->streamon++;
fh->streamon_ch[channel - 1]++;
os_sem_post(&fh->sem);
return 0;
}
err = uvc_host_open_camera(fh->private_data);//打开USB，并配置UVC的视频流
if (err) {
log_error("uvc_stream_on err");
os_sem_post(&fh->sem);
return err;
}
fh->streamon++;
fh->streamon_ch[channel - 1]++;
if (fh->uvc_video_q) {
videobuf_streamon(&fh->video_q, (u8 *)&channel);
}
os_sem_post(&fh->sem);
return err;
}
static int uvc_set_real_fps(void *_fh, u8 fp)
{
struct uvc_fh *fh = (struct uvc_fh *)_fh;
fh->real_fps = fp;
return 0;
}
static int uvc_stream_off(void *device, void *_fh, int index)
{
int err = 0;
struct uvc_fh *fh = (struct uvc_fh *)_fh;
u32 time = jiffies + msecs_to_jiffies(10);
u8 channel = 0;
os_sem_pend(&fh->sem, 0);
for (int i = 0; i < UVC_CHANNEL_MAX; i++) {
if ((u32)(&fh->device[i]) == (u32)device) {
channel = i + 1;
break;
}
}
ASSERT(channel, "err int uvc_stream_off\n");
fh->streamon_ch[channel - 1]--;
if (fh->streamon && --fh->streamon) {
os_sem_post(&fh->sem);
return 0;
}
if (!fh->uvc_out) {
uvc_host_close_camera(fh->private_data);//关闭UVC视频流
}
fh->streamoff = 1;
//cppcheck-suppress knownConditionTrueFalse
while (fh->streamoff) {
if (time_after(jiffies, time)) {
break;
}
}
if (fh->buf) {
if (fh->buf != fh->share_buf) {
uvc_buf_free(fh, fh->buf, fh->alloc_channel);
}
fh->buf = NULL;
fh->b_offset = 0;
}
if (fh->uvc_video_q) {
err = videobuf_streamoff(&fh->video_q, 0);
}
os_sem_post(&fh->sem);
return err;
}
static int uvc_dev_init(const struct dev_node *node, void *_data)
{
//struct uvc_platform_data *data = (struct uvc_platform_data *)_data;
os_sem_create(&__this->sem, 1);
INIT_LIST_HEAD(&__this->dev_list);
return 0;
}
static bool uvc_dev_online(const struct dev_node *node)
{
int id;
id = uvc_host_online();
log_debug("[msg]>>>>>>>>>>>id=%d", id);
if (id < 0) {
return false;
}
return true;
}
static int uvc_dev_out(void *fd)
{
struct uvc_fh *fh = (struct uvc_fh *)fd;
os_sem_pend(&fh->sem, 0);
fh->uvc_out = 1;
os_sem_post(&fh->sem);
return 0;
}
static int uvc_dev_open(const char *_name, struct device **device, void *arg)
{
struct uvc_fh *fh = NULL;
struct uvc_host_param param = {0};
char name[8];
int id, i;
u8 channel = 0;
struct video_var_param_info *info = (struct video_var_param_info *)arg;
id = info->f->uvc_id;
list_for_each_uvc(fh) {
if (fh->id == id) {//已经被打开过则使用另外通道
for (i = 0; i < UVC_CHANNEL_MAX; i++) {
if (!fh->open[i]) {
channel = i;
break;
}
}
if (i >= UVC_CHANNEL_MAX) {
log_error("uvc no channel");
os_sem_post(&__this->sem);
return -EINVAL;
}
*device = &fh->device[channel];
(*device)->private_data = fh;
fh->video_dev[channel] = (struct video_device *)info->priv;
fh->open[channel] = 1;
fh->channel++;
os_sem_post(&__this->sem);
return 0;
}
}
fh = (struct uvc_fh *)zalloc(sizeof(*fh));
if (!fh) {
os_sem_post(&__this->sem);
return -ENOMEM;
}
sprintf(name, "uvc%d", id);
param.name = name;//node->name;
if (info->f->pixelformat & VIDEO_PIX_FMT_H264) {
param.uvc_stream_out = uvc_h264_stream_out;
} else {
param.uvc_stream_out = uvc_mjpg_stream_out;
}
param.uvc_out = uvc_dev_out;
param.priv = fh;
log_info("open uvc name = %s", name);
fh->private_data = uvc_host_open(&param);//初始化UVC主机
if (!fh->private_data) {
free(fh);
os_sem_post(&__this->sem);
return -EINVAL;
}
if (info->priv) {
fh->video_dev[channel] = (struct video_device *)info->priv;
}
#if UVC_RECV_BUFF_SHARE
if (!fh->share_buf) {
fh->share_buf = malloc(UVC_RECV_BUFF_SHARE_SIZE);
if (!fh->share_buf) {
log_error("uvc share_buf no men");
free(fh);
os_sem_post(&__this->sem);
return -ENOMEM;
}
}
#endif
os_sem_create(&fh->sem, 0);
list_add_uvc(fh);//打开后添加到链表，在多通道打开则需要查找链表
os_sem_post(&fh->sem);
*device = &fh->device[channel];
(*device)->private_data = fh;
fh->id = id;
fh->open[channel] = 1;
fh->channel++;
os_sem_post(&__this->sem);
return 0;
}
static int uvc_querycap(struct uvc_fh *fh, struct uvc_capability *cap)//获取分辨率
{
int num;
struct uvc_frame_info *reso_table;
os_sem_pend(&fh->sem, 0);
num = uvc_host_get_pix_table(fh->private_data, &reso_table);
if (num > (sizeof(cap->reso) / sizeof(cap->reso[0]))) {
num = sizeof(cap->reso) / sizeof(cap->reso[0]);
}
memcpy(cap->reso, reso_table, sizeof(cap->reso[0]) * num);
cap->fmt = UVC_CAMERA_FMT_MJPG;
cap->reso_num = num;
cap->fps = uvc_host_get_fps(fh->private_data);
fh->fps = cap->fps;
//printf("defualt : uvc_querycap fps = %d, %d*%d\n", cap->fps, cap->reso[cap->reso_num - 1].width, cap->reso[cap->reso_num - 1].height);
os_sem_post(&fh->sem);
return 0;
}
static int uvc_req_processing_unit(struct uvc_fh *fh, struct uvc_processing_unit *pu)
{
int err = 0;
os_sem_pend(&fh->sem, 0);
if (!fh->uvc_out) {
err = uvc_host_req_processing_unit(fh->private_data, pu);
}
os_sem_post(&fh->sem);
return err;
}
static int uvc_dev_reset(struct uvc_fh *fh)
{
int err = 0;
os_sem_pend(&fh->sem, 0);
if (!fh->uvc_out) {
err = uvc_force_reset(fh->private_data);
}
os_sem_post(&fh->sem);
return err;
}
static int usb_ioctl(struct uvc_fh *fh, u32 cmd, void *arg)
{
int err = 0;
if (!fh) {
return -EINVAL;
}
os_sem_pend(&fh->sem, 0);
if (!fh->uvc_out) {
err = uvc2usb_ioctl(fh->private_data, cmd, arg);
}
os_sem_post(&fh->sem);
return err;
}
static int uvc_dev_ioctl(struct device *device, u32 cmd, u32 arg)
{
int ret = 0;
struct uvc_fh *fh = (struct uvc_fh *)device->private_data;
switch (cmd) {
case UVCIOC_QUERYCAP:
ret = uvc_querycap(fh, (struct uvc_capability *)arg);
break;
case UVCIOC_SET_CAP_SIZE:
ret = uvc_host_set_pix(fh->private_data, (int)arg);
break;
case UVCIOC_REQBUFS:
ret = uvc_dev_reqbufs(fh, (struct uvc_reqbufs *)arg);
break;
case UVCIOC_DQBUF:
ret = uvc_dev_dqbuf(fh, (struct video_buffer *)arg);
break;
case UVCIOC_QBUF:
ret = uvc_dev_qbuf(fh, (struct video_buffer *)arg);
break;
case UVCIOC_STREAM_ON:
ret = uvc_stream_on(device, fh, arg);
break;
case UVCIOC_STREAM_OFF:
ret = uvc_stream_off(device, fh, arg);
break;
case UVCIOC_GET_IMAMGE:
ret = uvc_img_cap(fh, arg);
break;
case UVCIOC_RESET:
ret = uvc_dev_reset(fh);
break;
case UVCIOC_REQ_PROCESSING_UNIT:
ret = uvc_req_processing_unit(fh, (struct uvc_processing_unit *)arg);
break;
case UVCIOC_SET_CUR_GRAY:
/*set_uvc_gray(arg);*/
break;
case UVCIOC_SET_CUR_FPS:
uvc_set_real_fps(fh, (u8)arg);
break;
default:
ret = usb_ioctl(fh, cmd, (void *)arg);
break;
}
return ret;
}
static int uvc_dev_close(struct device *device)
{
struct uvc_fh *fh = (struct uvc_fh *)device->private_data;
if (fh) {
if (fh->channel) {
fh->channel--;
}
}
if (fh && fh->channel == 0) {//通道都关闭了
os_sem_pend(&fh->sem, 0);
uvc_host_close(fh->private_data);
for (int i = 0; i < UVC_CHANNEL_MAX; i++) {//多通道关闭
if (&fh->device[i] == device) {//关闭是当前通道
fh->open[i] = 0;
fh->video_dev[i] = NULL;
memset(&fh->device[i], 0, sizeof(struct device));
}
}
if (fh->uvc_video_q) {
videobuf_queue_release(&fh->video_q);
}
list_del_uvc(fh);
if (fh->share_buf) {
free(fh->share_buf);
fh->share_buf = NULL;
}
os_sem_post(&fh->sem);
free(fh);
}
return 0;
}
const struct device_operations uvc_dev_ops = {
.init = uvc_dev_init,
.open = uvc_dev_open,
.ioctl = uvc_dev_ioctl,
.close = uvc_dev_close,
.online = uvc_dev_online,
};
#endif
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