static int _open_setup(VideoPhonePlugin * video)
{
int ret;
struct v4l2_cropcap cropcap;
struct v4l2_crop crop;
GError * error = NULL;
/* check for capabilities */
if(_video_ioctl(video, VIDIOC_QUERYCAP, &video->cap) == -1)
return -error_set_code(1, "%s: %s (%s)", video->device,
"Could not obtain the capabilities",
strerror(errno));
if((video->cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) == 0)
return -error_set_code(1, "%s: %s", video->device,
"Not a video capture device");
/* reset cropping */
memset(&cropcap, 0, sizeof(cropcap));
cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if(_video_ioctl(video, VIDIOC_CROPCAP, &cropcap) == 0)
{
/* reset to default */
crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
crop.c = cropcap.defrect;
if(_video_ioctl(video, VIDIOC_S_CROP, &crop) == -1
&& errno == EINVAL)
/* XXX ignore this error for now */
error_set_code(1, "%s: %s", video->device,
"Cropping not supported");
}
/* obtain the current format */
if(_video_ioctl(video, VIDIOC_G_FMT, &video->format) == -1)
return -error_set_code(1, "%s: %s", video->device,
"Could not obtain the video capture format");
/* check the current format */
if(video->format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -error_set_code(1, "%s: %s", video->device,
"Unsupported video capture type");
if((video->cap.capabilities & V4L2_CAP_STREAMING) != 0)
#ifdef NOTYET
ret = _open_setup_mmap(video);
#else
ret = _open_setup_read(video);
#endif
else if((video->cap.capabilities & V4L2_CAP_READWRITE) != 0)
/* obtain the current format */
if(_video_ioctl(video, VIDIOC_G_FMT, &video->format) == -1)
return -error_set_code(1, "%s: %s", video->device,
"Could not obtain the video capture format");
/* check the current format */
if(video->format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -error_set_code(1, "%s: %s", video->device,
"Unsupported video capture type");
if((video->cap.capabilities & V4L2_CAP_STREAMING) != 0)
#ifdef NOTYET
ret = _open_setup_mmap(video);
#else
ret = _open_setup_read(video);
#endif
else if((video->cap.capabilities & V4L2_CAP_READWRITE) != 0)
ret = _open_setup_read(video);
else
ret = -error_set_code(1, "%s: %s", video->device,
"Unsupported capabilities");
if(ret != 0)
return ret;
/* setup a IO channel */
video->channel = g_io_channel_unix_new(video->fd);
if(g_io_channel_set_encoding(video->channel, NULL, &error)
!= G_IO_STATUS_NORMAL)
{
error_set_code(1, "%s", error->message);
g_error_free(error);
return -1;
}
g_io_channel_set_buffered(video->channel, FALSE);
/* obtain the current format */
if(_camera_ioctl(camera, VIDIOC_G_FMT, &camera->format) == -1)
return -error_set_code(1, "%s: %s", camera->device,
_("Could not obtain the video capture format"));
/* check the current format */
if(camera->format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -error_set_code(1, "%s: %s", camera->device,
_("Unsupported video capture type"));
if((camera->cap.capabilities & V4L2_CAP_STREAMING) != 0)
#ifdef NOTYET
ret = _open_setup_mmap(camera);
#else
ret = _open_setup_read(camera);
#endif
else if((camera->cap.capabilities & V4L2_CAP_READWRITE) != 0)
ret = _open_setup_read(camera);
else
ret = -error_set_code(1, "%s: %s", camera->device,
_("Unsupported capabilities"));
if(ret != 0)
return ret;
/* setup an I/O channel */
camera->channel = g_io_channel_unix_new(camera->fd);
if(g_io_channel_set_encoding(camera->channel, NULL, &error)
!= G_IO_STATUS_NORMAL)
{
error_set_code(1, "%s", error->message);
g_error_free(error);
return -1;
}
g_io_channel_set_buffered(camera->channel, FALSE);
