#include <linux/ktime.h>
#include <asm/uaccess.h>
#include <linux/videodev2.h>
- #include <media/videobuf2-v4l2.h>
#include <media/videobuf2-vmalloc.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.h>
static int ioctl_querycap(struct file *file, void *fh, struct v4l2_capability *cap);
static int ioctl_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *fdesc);
+ static int ioctl_enum_framesz(struct file *file, void *fh, struct v4l2_frmsizeenum *fsz);
static int ioctl_get_fmt(struct file *file, void *fh, struct v4l2_format *fmt);
static int ioctl_set_fmt(struct file *file, void *fh, struct v4l2_format *fmt);
static int ioctl_try_fmt(struct file *file, void *fh, struct v4l2_format *fmt);
static int ioctl_queryctl(struct file *file, void *fh, struct v4l2_queryctrl *ctl);
static int queue_setup(struct vb2_queue *vbq, unsigned int *nbuf,
- unsigned int *nplanes, unsigned int *sizes, void **alloc_ctx);
+ unsigned int *nplanes, unsigned int *sizes, struct device **alloc_ctx);
static int buf_prepare(struct vb2_buffer *vb);
static void buf_queue(struct vb2_buffer *vb);
static int start_streaming(struct vb2_queue *vbq, unsigned int count);
iops.vidioc_querycap = ioctl_querycap;
iops.vidioc_enum_fmt_vid_cap = ioctl_enum_fmt;
+ iops.vidioc_enum_framesizes = ioctl_enum_framesz;
iops.vidioc_g_fmt_vid_cap = ioctl_get_fmt;
iops.vidioc_s_fmt_vid_cap = ioctl_set_fmt;
iops.vidioc_try_fmt_vid_cap = ioctl_try_fmt;
return res;
}
- printk(KERN_INFO "vdummy device initialized\n");
+ printk(KERN_INFO "vdummy: initialized\n");
return 0;
}
return 0;
}
+ static int ioctl_enum_framesz(struct file *file, void *fh, struct v4l2_frmsizeenum *fsz)
+ {
+ if(fsz->index != 0) {
+ return -EINVAL;
+ }
+ fsz->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
+ fsz->stepwise.min_width = fsz->stepwise.min_height = 1;
+ fsz->stepwise.max_width = fsz->stepwise.max_height = 8192;
+ fsz->stepwise.step_width = fsz->stepwise.step_height = 1;
+ return 0;
+ }
+
static int ioctl_get_fmt(struct file *file, void *fh, struct v4l2_format *fmt)
{
if(fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
}
static int queue_setup(struct vb2_queue *vbq, unsigned int *nbuf,
- unsigned int *nplanes, unsigned int *sizes, void **alloc_ctx)
+ unsigned int *nplanes, unsigned int *sizes, struct device **alloc_ctx)
{
if(vbq->num_buffers + *nbuf < 2) {
*nbuf = 2 - vbq->num_buffers;
struct buffer *buf = (struct buffer*)((char*)vb - offsetof(struct buffer, vb));
spin_lock(&blist_lock);
+ printk(KERN_INFO "vdummy: enqueue buffer\n");
if(buflist) {
buflist_tail->next = buf;
buflist_tail = buf;
static void clear_queue(enum vb2_buffer_state st)
{
+ struct buffer *list;
+
+ printk(KERN_INFO "vdummy: clear_queue\n");
+
spin_lock(&blist_lock);
- while(buflist) {
- struct buffer *buf = buflist;
- buflist = buflist->next;
- vb2_buffer_done(&buf->vb.vb2_buf, st);
- }
+ list = buflist;
buflist = buflist_tail = 0;
spin_unlock(&blist_lock);
+
+ while(list) {
+ struct buffer *buf = list;
+ list = list->next;
+ vb2_buffer_done(&buf->vb.vb2_buf, st);
+ }
}
static int start_streaming(struct vb2_queue *vbq, unsigned int count)
frame_interval = ktime_set(0, 1000000000ul / (unsigned long)framerate);
}
+ printk(KERN_INFO "vdummy: start streaming (interval: %ld ms)\n",
+ (long)ktime_to_ms(frame_interval));
hrtimer_start(&timer, frame_interval, HRTIMER_MODE_REL);
return 0;
}
static void stop_streaming(struct vb2_queue *vbq)
{
+ printk(KERN_INFO "vdummy: stop streaming\n");
hrtimer_cancel(&timer);
streaming = 0;
static int gen_frame(void)
{
struct buffer *buf = 0;
+ unsigned long flags;
+ printk(KERN_INFO "vdummy: gen_frame\n");
+
- spin_lock(&blist_lock);
+ spin_lock_irqsave(&blist_lock, flags);
if(buflist) {
buf = buflist;
buflist = buflist->next;
if(!buflist) buflist_tail = 0;
}
- spin_unlock(&blist_lock);
+ spin_unlock_irqrestore(&blist_lock, flags);
if(buf) {
- mutex_lock(&mutex);
memcpy(vb2_plane_vaddr(&buf->vb.vb2_buf, 0), frame, frame_size);
buf->vb.vb2_buf.timestamp = ktime_get_ns();
buf->vb.field = V4L2_FIELD_NONE;
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
vb2_set_plane_payload(&buf->vb.vb2_buf, 0, frame_size);
- mutex_unlock(&mutex);
}
return 0;
}
enum hrtimer_restart timer_func(struct hrtimer *timer)
{
- gen_frame();
+ printk(KERN_INFO "vdummy: timer!\n");
+ //gen_frame();
return streaming ? HRTIMER_RESTART : HRTIMER_NORESTART;
}