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Add beginnings of Xv plugin
Add Poll event
Clean up props handling
V4l2 add beginnings of poll event
This commit is contained in:
Wim Taymans 2016-07-07 09:30:18 +02:00
parent a1a27328e2
commit a31eb56663
14 changed files with 842 additions and 79 deletions
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73
spa/plugins/v4l2/v4l2-utils.c
View file

@ -26,28 +26,29 @@ spa_v4l2_open (SpaV4l2Source *this)
{
SpaV4l2State *state = &this->state;
struct stat st;
SpaV4l2SourceProps *props = &this->props[1];
if (state->opened)
return 0;
fprintf (stderr, "Playback device is '%s'\n", this->props.device);
fprintf (stderr, "Playback device is '%s'\n", props->device);
if (stat (this->props.device, &st) < 0) {
if (stat (props->device, &st) < 0) {
fprintf(stderr, "Cannot identify '%s': %d, %s\n",
this->props.device, errno, strerror (errno));
props->device, errno, strerror (errno));
return -1;
}
if (!S_ISCHR (st.st_mode)) {
fprintf(stderr, "%s is no device\n", this->props.device);
fprintf(stderr, "%s is no device\n", props->device);
return -1;
}
state->fd = open (this->props.device, O_RDWR | O_NONBLOCK, 0);
state->fd = open (props->device, O_RDWR | O_NONBLOCK, 0);
if (state->fd == -1) {
fprintf (stderr, "Cannot open '%s': %d, %s\n",
this->props.device, errno, strerror (errno));
props->device, errno, strerror (errno));
return -1;
}
@ -57,7 +58,7 @@ spa_v4l2_open (SpaV4l2Source *this)
}
if ((state->cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) == 0) {
fprintf (stderr, "%s is no video capture device\n", this->props.device);
fprintf (stderr, "%s is no video capture device\n", props->device);
return -1;
}
state->opened = true;
@ -352,20 +353,44 @@ mmap_read (SpaV4l2Source *this)
return 0;
}
static void
v4l2_on_fd_events (void *user_data)
{
V4l2EventPoll *poll = user_data;
SpaV4l2Source *this = poll->source;
SpaEvent event;
mmap_read (this);
event.refcount = 1;
event.notify = NULL;
event.type = SPA_EVENT_TYPE_CAN_PULL_OUTPUT;
event.port_id = 0;
event.size = 0;
event.data = NULL;
this->event_cb (&this->handle, &event, this->user_data);
}
static void *
v4l2_loop (void *user_data)
{
SpaV4l2Source *this = user_data;
SpaV4l2State *state = &this->state;
struct pollfd fds[1];
SpaEvent event;
int r;
event.notify = NULL;
event.type = SPA_EVENT_TYPE_CAN_PULL_OUTPUT;
event.port_id = 0;
event.size = 0;
event.data = NULL;
fds[0].fd = state->fd;
fds[0].events = POLLIN | POLLPRI | POLLERR;
fds[0].revents = 0;
while (state->running) {
int r;
r = poll (fds, 1, 2000);
if (r < 0) {
if (errno == EINTR)
@ -380,18 +405,8 @@ v4l2_loop (void *user_data)
if (mmap_read (this) < 0)
break;
{
SpaEvent event;
event.refcount = 1;
event.notify = NULL;
event.type = SPA_EVENT_TYPE_CAN_PULL_OUTPUT;
event.port_id = 0;
event.size = 0;
event.data = NULL;
this->event_cb (&this->handle, &event, this->user_data);
}
event.refcount = 1;
this->event_cb (&this->handle, &event, this->user_data);
}
return NULL;
}
@ -525,6 +540,8 @@ spa_v4l2_start (SpaV4l2Source *this)
SpaV4l2State *state = &this->state;
int err;
enum v4l2_buf_type type;
SpaEvent event;
V4l2EventPoll poll;
if (spa_v4l2_open (this) < 0)
return -1;
@ -539,6 +556,20 @@ spa_v4l2_start (SpaV4l2Source *this)
} else
return -1;
event.refcount = 1;
event.notify = NULL;
event.type = SPA_EVENT_TYPE_ADD_POLL;
event.port_id = 0;
event.data = &poll.poll;
event.size = sizeof (poll.poll);
poll.poll.fd = state->fd;
poll.poll.events = POLLIN | POLLPRI | POLLERR;
poll.poll.revents = 0;
poll.poll.callback = v4l2_on_fd_events;
poll.source = this;
this->event_cb (&this->handle, &event, this->user_data);
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (xioctl (state->fd, VIDIOC_STREAMON, &type) < 0) {
perror ("VIDIOC_STREAMON");