forked/ustreamer
1
0
Fork 0
mirror of https://github.com/pikvm/ustreamer.git synced 2026-03-03 14:21:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

refactoring

Browse Source
This commit is contained in:
Devaev Maxim
2019-03-16 13:09:30 +03:00
parent d979209096
commit 1f0b49e5fe
3 changed files with 77 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
src/device.c
View File

@@ -201,6 +201,71 @@ void device_close(struct device_t *dev) {
}
}
int device_switch_capturing(struct device_t *dev, bool enable) {
if (enable != dev->run->capturing) {
enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
LOG_DEBUG("Calling ioctl(%s) ...", (enable ? "VIDIOC_STREAMON" : "VIDIOC_STREAMOFF"));
if (xioctl(dev->run->fd, (enable ? VIDIOC_STREAMON : VIDIOC_STREAMOFF), &type) < 0) {
LOG_PERROR("Unable to %s capturing", (enable ? "start" : "stop"));
if (enable) {
return -1;
}
}
dev->run->capturing = enable;
LOG_INFO("Capturing %s", (enable ? "started" : "stopped"));
}
return 0;
}
int device_grab_buffer(struct device_t *dev, struct v4l2_buffer *buf_info) {
MEMSET_ZERO_PTR(buf_info);
buf_info->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf_info->memory = V4L2_MEMORY_MMAP;
LOG_DEBUG("Calling ioctl(VIDIOC_DQBUF) ...");
if (xioctl(dev->run->fd, VIDIOC_DQBUF, buf_info) < 0) {
LOG_PERROR("Unable to dequeue buffer");
return -1;
}
LOG_DEBUG("Got a new frame in buffer index=%u; bytesused=%u", buf_info->index, buf_info->bytesused);
if (buf_info->index >= dev->run->n_buffers) {
LOG_ERROR("Got invalid buffer index=%u; nbuffers=%u", buf_info->index, dev->run->n_buffers);
return -1;
}
return 0;
}
int device_release_buffer(struct device_t *dev, struct v4l2_buffer *buf_info) {
LOG_DEBUG("Calling ioctl(VIDIOC_QBUF) ...");
if (xioctl(dev->run->fd, VIDIOC_QBUF, buf_info) < 0) {
LOG_PERROR("Unable to requeue buffer");
return -1;
}
return 0;
}
int device_consume_event(struct device_t *dev) {
struct v4l2_event event;
LOG_DEBUG("Calling ioctl(VIDIOC_DQEVENT) ...");
if (!xioctl(dev->run->fd, VIDIOC_DQEVENT, &event)) {
switch (event.type) {
case V4L2_EVENT_SOURCE_CHANGE:
LOG_INFO("Got V4L2_EVENT_SOURCE_CHANGE: source changed");
return -1;
case V4L2_EVENT_EOS:
LOG_INFO("Got V4L2_EVENT_EOS: end of stream (ignored)");
return 0;
}
} else {
LOG_PERROR("Got some V4L2 device event, but where is it? ");
}
return 0;
}
static int _device_open_check_cap(struct device_t *dev) {
struct v4l2_capability cap;
int input = dev->input; // Needs pointer to int for ioctl()