/**
* cheese_camera_device_get_device_node:
* @device: a #CheeseCameraDevice
*
* Get the path to the device node associated with the @device.
*
* Returns: (transfer none): the path to the device node of the video capture
* device
*/
const gchar *
cheese_camera_device_get_device_node (CheeseCameraDevice *device)
{
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (device), NULL);
return device->priv->device_node;
}
/**
* cheese_camera_device_get_best_format:
* @device: a #CheeseCameraDevice
*
* Get the #CheeseVideoFormat with the highest resolution with a width greater
* than 640 pixels and a framerate of greater than 15 FPS for this @device. If
* no such format is found, get the highest available resolution instead.
*
* Returns: (transfer full): the highest-resolution supported
* #CheeseVideoFormat
*/
CheeseVideoFormat *
cheese_camera_device_get_best_format (CheeseCameraDevice *device)
{
CheeseVideoFormatFull *format = NULL;
GList *l;
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (device), NULL);
/* Check for the highest resolution with width >= 640 and FPS >= 15. */
for (l = device->priv->formats; l != NULL; l = g_list_next (l))
{
CheeseVideoFormatFull *item = l->data;
float frame_rate = (float)item->fr_numerator / (float)item->fr_denominator;
if (item->width >= 640 && frame_rate >= 15)
{
format = item;
break;
}
}
/* Else simply return the highest resolution. */
if (!format)
{
format = device->priv->formats->data;
}
GST_INFO ("%dx%d@%d/%d", format->width, format->height,
format->fr_numerator, format->fr_denominator);
return g_boxed_copy (CHEESE_TYPE_VIDEO_FORMAT, format);
}
/**
* cheese_camera_device_get_format_list:
* @device: a #CheeseCameraDevice
*
* Get the sorted list of #CheeseVideoFormat that the @device supports.
*
* Returns: (element-type Cheese.VideoFormat) (transfer container): list of
* #CheeseVideoFormat
*/
GList *
cheese_camera_device_get_format_list (CheeseCameraDevice *device)
{
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (device), NULL);
return g_list_copy (device->priv->formats);
}
static gboolean
cheese_camera_device_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
CheeseCameraDevice *device = CHEESE_CAMERA_DEVICE (initable);
CheeseCameraDevicePrivate *priv = device->priv;
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (initable), FALSE);
if (cancellable != NULL)
{
g_set_error_literal (error,
CHEESE_CAMERA_DEVICE_ERROR,
CHEESE_CAMERA_DEVICE_ERROR_NOT_SUPPORTED,
_("Cancellable initialization not supported"));
return FALSE;
}
if (priv->construct_error)
{
if (error)
*error = g_error_copy (priv->construct_error);
return FALSE;
}
return TRUE;
}
/**
* cheese_camera_device_get_device_node:
* @device: a #CheeseCameraDevice
*
* Get the path to the device node associated with the @device.
*
* Returns: (transfer none): the path to the device node of the video capture
* device
*/
const gchar *
cheese_camera_device_get_device_node (CheeseCameraDevice *device)
{
CheeseCameraDevicePrivate *priv;
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (device), NULL);
priv = cheese_camera_device_get_instance_private (device);
return priv->device_node;
}
/**
* cheese_camera_device_get_format_list:
* @device: a #CheeseCameraDevice
*
* Get the sorted list of #CheeseVideoFormat that the @device supports.
*
* Returns: (element-type Cheese.VideoFormat) (transfer container): list of
* #CheeseVideoFormat
*/
GList *
cheese_camera_device_get_format_list (CheeseCameraDevice *device)
{
CheeseCameraDevicePrivate *priv;
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (device), NULL);
priv = cheese_camera_device_get_instance_private (device);
return g_list_copy (priv->formats);
}
/**
* cheese_camera_device_get_caps_for_format:
* @device: a #CheeseCameraDevice
* @format: a #CheeseVideoFormat
*
* Get the #GstCaps for the given @format on the @device.
*
* Returns: (transfer full): the #GstCaps for the given @format
*/
GstCaps *
cheese_camera_device_get_caps_for_format (CheeseCameraDevice *device,
CheeseVideoFormat *format)
{
CheeseCameraDevicePrivate *priv;
CheeseVideoFormatFull *full_format;
GstCaps *desired_caps;
GstCaps *subset_caps;
gsize i;
g_return_val_if_fail (CHEESE_IS_CAMERA_DEVICE (device), NULL);
full_format = cheese_camera_device_find_full_format (device, format);
if (!full_format)
{
GST_INFO ("Getting caps for %dx%d: no such format!",
format->width, format->height);
return gst_caps_new_empty ();
}
GST_INFO ("Getting caps for %dx%d @ %d/%d fps",
full_format->width, full_format->height,
full_format->fr_numerator, full_format->fr_denominator);
desired_caps = gst_caps_new_empty ();
for (i = 0; supported_formats[i] != NULL; i++)
{
gst_caps_append (desired_caps,
cheese_camera_device_format_to_caps (supported_formats[i],
full_format));
}
priv = cheese_camera_device_get_instance_private (device);
subset_caps = gst_caps_intersect (desired_caps, priv->caps);
subset_caps = gst_caps_simplify (subset_caps);
gst_caps_unref (desired_caps);
GST_INFO ("Got %" GST_PTR_FORMAT, subset_caps);
return subset_caps;
}