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arvdevice.c
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/* Aravis - Digital camera library
*
* Copyright © 2009-2025 Emmanuel Pacaud <[email protected]>
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Emmanuel Pacaud <[email protected]>
*/
/**
* SECTION: arvdevice
* @short_description: Abstract base class for device handling
*
* #ArvDevice is an abstract base class for the control of cameras. It provides
* an easy access to the camera settings, and to its genicam interface for more
* advanced uses.
*/
#include <arvdevice.h>
#include <arvdeviceprivate.h>
#include <arvgc.h>
#include <arvgccommand.h>
#include <arvgcinteger.h>
#include <arvgcfloat.h>
#include <arvgcfeaturenode.h>
#include <arvgcboolean.h>
#include <arvgcenumeration.h>
#include <arvgcregister.h>
#include <arvgcstring.h>
#include <arvstream.h>
#include <arvdebug.h>
enum {
ARV_DEVICE_SIGNAL_CONTROL_LOST,
#if ARAVIS_HAS_EVENT
ARV_DEVICE_SIGNAL_DEVICE_EVENT,
#endif
ARV_DEVICE_SIGNAL_LAST
} ArvDeviceSignals;
static guint arv_device_signals[ARV_DEVICE_SIGNAL_LAST] = {0};
GQuark
arv_device_error_quark (void)
{
return g_quark_from_static_string ("arv-device-error-quark");
}
typedef struct {
GError *init_error;
GSList *streams;
} ArvDevicePrivate;
static void arv_device_initable_iface_init (GInitableIface *iface);
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (ArvDevice, arv_device, G_TYPE_OBJECT,
G_ADD_PRIVATE (ArvDevice)
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, arv_device_initable_iface_init))
/**
* arv_device_create_stream:
* @device: a #ArvDevice
* @callback: (scope notified) (nullable) (closure user_data) (destroy destroy): a frame processing callback
* @user_data: (allow-none) : user data for @callback
* @destroy: (nullable): destroy notifier of @user_data
* @error: return location for a [[email protected]]
*
* Creates a new [class@ArvStream] for video stream handling. See
* [callback@ArvStreamCallback] for details regarding the callback function.
*
* Return value: (transfer full): a new [class@ArvStream].
*
* Since: 0.10.0
*/
ArvStream *
arv_device_create_stream (ArvDevice *device,
ArvStreamCallback callback, void *user_data, GDestroyNotify destroy,
GError **error)
{
ArvDevicePrivate *priv = arv_device_get_instance_private (device);
ArvStream *stream;
GWeakRef *stream_weak_ref;
g_return_val_if_fail (ARV_IS_DEVICE (device), NULL);
stream = ARV_DEVICE_GET_CLASS (device)->create_stream (device, callback, user_data, destroy, error);
if (!ARV_IS_STREAM (stream))
return NULL;
stream_weak_ref = g_new (GWeakRef, 1);
g_weak_ref_init (stream_weak_ref, stream);
priv->streams = g_slist_append (priv->streams, stream_weak_ref);
return stream;
}
/**
* arv_device_read_memory:
* @device: a #ArvDevice
* @address: memory address
* @size: number of bytes to read
* @buffer: a buffer for the storage of the read data
* @error: (out) (allow-none): a #GError placeholder
*
* Reads @size bytes from the device memory.
*
* Return value: (skip): TRUE on success.
*
* Since: 0.2.0
**/
gboolean
arv_device_read_memory (ArvDevice *device, guint64 address, guint32 size, void *buffer, GError **error)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
g_return_val_if_fail (size > 0, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
return ARV_DEVICE_GET_CLASS (device)->read_memory (device, address, size, buffer, error);
}
/**
* arv_device_write_memory:
* @device: a #ArvDevice
* @address: memory address
* @size: size of the returned buffer
* @buffer: (transfer full): the buffer read from memory
* @error: (out) (allow-none): a #GError placeholder
*
* Writes @size bytes to the device memory.
*
* Return value: (skip): TRUE on success.
*
* Since: 0.2.0
**/
gboolean
arv_device_write_memory (ArvDevice *device, guint64 address, guint32 size, const void *buffer, GError **error)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
g_return_val_if_fail (size > 0, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
return ARV_DEVICE_GET_CLASS (device)->write_memory (device, address, size, buffer, error);
}
/**
* arv_device_read_register:
* @device: a #ArvDevice
* @address: register address
* @value: (out): a placeholder for the read value
* @error: (out) (allow-none): a #GError placeholder
*
* Reads the value of a device register.
*
* Return value: (skip): TRUE on success.
*
* Since: 0.2.0
**/
gboolean
arv_device_read_register (ArvDevice *device, guint64 address, guint32 *value, GError **error)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (value != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
return ARV_DEVICE_GET_CLASS (device)->read_register (device, address, value, error);
}
/**
* arv_device_write_register:
* @device: a #ArvDevice
* @address: the register address
* @value: value to write
* @error: (out) (allow-none): a #GError placeholder
*
* Writes @value to a device register.
*
* Return value: (skip): TRUE on success.
*
* Since: 0.2.0
**/
gboolean
arv_device_write_register (ArvDevice *device, guint64 address, guint32 value, GError **error)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
return ARV_DEVICE_GET_CLASS (device)->write_register (device, address, value, error);
}
#if ARAVIS_HAS_EVENT
/**
* arv_device_read_event_data:
* @device: a #ArvDevice
* @event_id: event id
* @address: memory address
* @size: number of bytes to read
* @buffer: a buffer for the storage of the read data
* @error: (out) (allow-none): a #GError placeholder
*
* Reads the data of a device event.
*
* Return value: (skip): TRUE on success.
*
* Since: 0.10.0
**/
gboolean
arv_device_read_event_data (ArvDevice *device, int event_id, guint64 address, guint32 size, void *buffer, GError **error)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (ARV_DEVICE_GET_CLASS (device)->read_event_data == NULL) {
g_set_error (error, ARV_GC_ERROR, ARV_GC_ERROR_NO_EVENT_IMPLEMENTATION,
"Events not implemented");
return FALSE;
} else {
return ARV_DEVICE_GET_CLASS (device)->read_event_data (device, event_id, address, size, buffer, error);
}
}
#endif
/**
* arv_device_get_genicam:
* @device: a #ArvDevice
*
* Retrieves the genicam interface of the given device.
*
* Return value: (transfer none): the genicam interface.
*
* Since: 0.2.0
*/
ArvGc *
arv_device_get_genicam (ArvDevice *device)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), NULL);
return ARV_DEVICE_GET_CLASS (device)->get_genicam (device);
}
/**
* arv_device_get_genicam_xml:
* @device: a #ArvDevice
* @size: (out) (allow-none): placeholder for the returned data size (bytes)
*
* Gets the Genicam XML data stored in the device memory.
*
* Returns: (transfer none): a pointer to the Genicam XML data, owned by the device.
*
* Since: 0.2.0
**/
const char *
arv_device_get_genicam_xml (ArvDevice *device, size_t *size)
{
g_return_val_if_fail (ARV_IS_DEVICE (device), NULL);
g_return_val_if_fail (size != NULL, NULL);
if (ARV_DEVICE_GET_CLASS (device)->get_genicam_xml != NULL)
return ARV_DEVICE_GET_CLASS (device)->get_genicam_xml (device, size);
*size = 0;
return NULL;
}
/**
* arv_device_create_chunk_parser:
* @device: a #ArvDevice
*
* Create a #ArvChunkParser object, to be used for chunk data extraction from #ArvBuffer.
*
* Returns: (transfer full): a new #ArvChunkParser object, NULL on error.
*
* Since: 0.4.0
**/
ArvChunkParser *
arv_device_create_chunk_parser (ArvDevice *device)
{
const char *xml = NULL;
gsize size = 0;
g_return_val_if_fail (ARV_IS_DEVICE (device), NULL);
xml = arv_device_get_genicam_xml (device, &size);
return arv_chunk_parser_new (xml, size);
}
/**
* arv_device_get_feature:
* @device: a #ArvDevice
* @feature: feature name
*
* Return value: (transfer none): the genicam node corresponding to the feature name, NULL if not found.
*
* Since: 0.2.0
*/
ArvGcNode *
arv_device_get_feature (ArvDevice *device, const char *feature)
{
ArvGc *genicam;
genicam = arv_device_get_genicam (device);
g_return_val_if_fail (ARV_IS_GC (genicam), NULL);
return arv_gc_get_node (genicam, feature);
}
/**
* arv_device_get_feature_access_mode:
* @device: a #ArvDevice
* @feature: feature name
*
* Return value: The actual feature access mode, which is a combination of ImposedAccessMode property and actual
* register access mode.
*
* Since: 0.8.22
*/
ArvGcAccessMode
arv_device_get_feature_access_mode (ArvDevice *device, const char *feature)
{
ArvGcNode* node;
g_return_val_if_fail (ARV_IS_DEVICE (device), ARV_GC_ACCESS_MODE_UNDEFINED);
g_return_val_if_fail (feature != NULL, ARV_GC_ACCESS_MODE_UNDEFINED);
node = arv_device_get_feature (device, feature);
g_return_val_if_fail (ARV_IS_GC_FEATURE_NODE (node), ARV_GC_ACCESS_MODE_UNDEFINED);
return arv_gc_feature_node_get_actual_access_mode (ARV_GC_FEATURE_NODE (node));
}
/**
* arv_device_is_feature_available:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder, %NULL to ignore
*
* Return: %TRUE if feature is available, %FALSE if not or on error.
*
* Since: 0.8.0
*/
gboolean
arv_device_is_feature_available (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode* node;
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (feature != NULL, FALSE);
node = arv_device_get_feature (device, feature);
return ARV_IS_GC_FEATURE_NODE (node) && arv_gc_feature_node_is_available (ARV_GC_FEATURE_NODE (node), error);
}
/**
* arv_device_is_feature_implemented:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder, %NULL to ignore
*
* Return: %TRUE if feature is implemented, %FALSE if not or on error.
*
* Since: 0.8.23
*/
gboolean
arv_device_is_feature_implemented (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode* node;
g_return_val_if_fail (ARV_IS_DEVICE (device), FALSE);
g_return_val_if_fail (feature != NULL, FALSE);
node = arv_device_get_feature (device, feature);
return ARV_IS_GC_FEATURE_NODE (node) && arv_gc_feature_node_is_implemented (ARV_GC_FEATURE_NODE (node), error);
}
static ArvGcNode *
_get_feature (ArvDevice *device, GType node_type, const char *feature, GError **error)
{
ArvGcNode *node;
g_return_val_if_fail (ARV_IS_DEVICE (device), NULL);
g_return_val_if_fail (feature != NULL, NULL);
node = arv_device_get_feature (device, feature);
if (node == NULL) {
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_FEATURE_NOT_FOUND,
"[%s] Not found", feature);
return NULL;
}
if (!(G_TYPE_CHECK_INSTANCE_TYPE ((node), node_type))) {
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a %s", feature, G_OBJECT_TYPE_NAME (node), g_type_name (node_type));
return NULL;
}
return node;
}
/**
* arv_device_get_feature_representation:
* @device: a #ArvDevice
* @feature: feature name
*
* Return: enum ArvGcRepresentation, ARV_GC_REPRESENTATION_UNDEFINED if not available.
*
* Since: 0.10.0
*/
ArvGcRepresentation
arv_device_get_feature_representation (ArvDevice *device, const char *feature)
{
ArvGcNode* node;
g_return_val_if_fail (ARV_IS_DEVICE (device), ARV_GC_REPRESENTATION_UNDEFINED);
g_return_val_if_fail (feature != NULL, ARV_GC_REPRESENTATION_UNDEFINED);
node = arv_device_get_feature (device, feature);
if (ARV_IS_GC_FLOAT(node)) {
return arv_gc_float_get_representation(ARV_GC_FLOAT(node));
}else if (ARV_IS_GC_INTEGER(node)){
return arv_gc_integer_get_representation(ARV_GC_INTEGER (node));
}
return ARV_GC_REPRESENTATION_UNDEFINED;
}
/**
* arv_device_execute_command:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Execute a genicam command.
*
* Returns: %TRUE on success
*
* Since: 0.8.0
*/
gboolean
arv_device_execute_command (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
GError *local_error = NULL;
node = _get_feature (device, ARV_TYPE_GC_COMMAND, feature, &local_error);
if (node != NULL)
arv_gc_command_execute (ARV_GC_COMMAND (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return FALSE;
}
return TRUE;
}
/**
* arv_device_get_feature_value:
* @device: a #ArvDevice object
* @feature: feature name
* @value: (out): a uninitialized #GValue placeholder
* @error: a #GError placeholder
*
* Get the value of a feature. Enumeration values are returned as strings.
*
* Since: 0.8.32
*/
void
arv_device_get_feature_value (ArvDevice *device, const char *feature, GValue *value, GError **error)
{
ArvGcNode *node;
GError *local_error = NULL;
node = arv_device_get_feature (device, feature);
if (node == NULL) {
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_FEATURE_NOT_FOUND,
"[%s] Not found", feature);
return;
}
if (ARV_IS_GC_FLOAT (node)) {
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, arv_gc_float_get_value (ARV_GC_FLOAT (node), &local_error));
} else if (ARV_IS_GC_ENUMERATION (node)) {
// ARV_IS_GC_INTEGER is true for an enum, so keep this before the int
g_value_init (value, G_TYPE_STRING);
g_value_set_string (value, arv_gc_enumeration_get_string_value (ARV_GC_ENUMERATION (node), &local_error));
} else if (ARV_IS_GC_INTEGER (node)) {
g_value_init (value, G_TYPE_INT64);
g_value_set_int64 (value, arv_gc_integer_get_value (ARV_GC_INTEGER (node), &local_error));
} else if (ARV_IS_GC_BOOLEAN (node)) {
g_value_init (value, G_TYPE_BOOLEAN);
g_value_set_boolean (value, arv_gc_boolean_get_value (ARV_GC_BOOLEAN (node), &local_error));
} else if (ARV_IS_GC_STRING (node)) {
g_value_init (value, G_TYPE_STRING);
g_value_set_string (value, arv_gc_string_get_value (ARV_GC_STRING (node), &local_error));
} else {
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a feature", feature, G_OBJECT_TYPE_NAME (node));
}
}
/**
* arv_device_set_feature_value:
* @device: a #ArvDevice object
* @feature: feature name
* @value: a #GValue
* @error: a #GError placeholder
*
* Set value of a feature.
*
* Since: 0.8.32
*/
void
arv_device_set_feature_value (ArvDevice *device, const char *feature, const GValue *value, GError **error)
{
ArvGcNode *node;
GValue value_copy = G_VALUE_INIT;
GError *local_error = NULL;
node = arv_device_get_feature (device, feature);
if (node == NULL) {
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_FEATURE_NOT_FOUND,
"[%s] Not found", feature);
return;
}
if (ARV_IS_GC_FLOAT (node)) {
g_value_init(&value_copy, G_TYPE_DOUBLE);
if (g_value_transform(value, &value_copy))
arv_gc_float_set_value (ARV_GC_FLOAT (node), g_value_get_double (&value_copy), &local_error);
else
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a double", feature, G_OBJECT_TYPE_NAME (node));
} else if (ARV_IS_GC_INTEGER (node)) {
g_value_init(&value_copy, G_TYPE_INT64);
if (g_value_transform(value, &value_copy))
arv_gc_integer_set_value (ARV_GC_INTEGER (node), g_value_get_int64 (&value_copy), &local_error);
else
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not an int64", feature, G_OBJECT_TYPE_NAME (node));
} else if (ARV_IS_GC_BOOLEAN (node)) {
g_value_init(&value_copy, G_TYPE_BOOLEAN);
if (g_value_transform(value, &value_copy))
arv_gc_boolean_set_value (ARV_GC_BOOLEAN (node), g_value_get_boolean (&value_copy), &local_error);
else
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a boolean", feature, G_OBJECT_TYPE_NAME (node));
} else if (ARV_IS_GC_STRING (node)) {
g_value_init(&value_copy, G_TYPE_STRING);
if (g_value_transform(value, &value_copy))
arv_gc_string_set_value (ARV_GC_STRING (node), g_value_get_string (&value_copy), &local_error);
else
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a string", feature, G_OBJECT_TYPE_NAME (node));
} else if (ARV_IS_GC_ENUMERATION (node)) {
if (G_VALUE_HOLDS_STRING (value))
arv_gc_enumeration_set_string_value (ARV_GC_ENUMERATION (node), g_value_get_string (value), &local_error);
else {
g_value_init(&value_copy, G_TYPE_INT64);
if (g_value_transform(value, &value_copy))
arv_gc_enumeration_set_int_value (ARV_GC_ENUMERATION (node), g_value_get_int64 (&value_copy), &local_error);
else
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a string or int64", feature, G_OBJECT_TYPE_NAME (node));
}
} else {
g_set_error (error, ARV_DEVICE_ERROR, ARV_DEVICE_ERROR_WRONG_FEATURE,
"[%s:%s] Not a feature", feature, G_OBJECT_TYPE_NAME (node));
}
}
/**
* arv_device_set_boolean_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @value: feature value
* @error: a #GError placeholder
*
* Set the value of a boolean feature.
*
* Since: 0.8.0
*/
void
arv_device_set_boolean_feature_value (ArvDevice *device, const char *feature, gboolean value, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_BOOLEAN, feature, error);
if (node != NULL)
arv_gc_boolean_set_value (ARV_GC_BOOLEAN (node), value, error);
}
/**
* arv_device_get_boolean_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Returns: the feature value, %FALSE on error.
*
* Since: 0.8.0
*/
gboolean
arv_device_get_boolean_feature_value (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_BOOLEAN, feature, error);
if (node != NULL)
return arv_gc_boolean_get_value (ARV_GC_BOOLEAN (node), error);
return FALSE;
}
/**
* arv_device_get_boolean_feature_value_gi: (rename-to arv_device_get_boolean_feature_value)
* @device: a #ArvDevice
* @feature: feature name
* @value: (out): feature value
* @error: a #GError placeholder
*
* Get the feature value, or %FALSE on error.
*
* Since: 0.8.0
*/
void
arv_device_get_boolean_feature_value_gi (ArvDevice *device, const char *feature, gboolean *value, GError **error)
{
g_return_if_fail (value != NULL);
*value = arv_device_get_boolean_feature_value (device, feature, error);
}
/**
* arv_device_set_string_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @value: new feature value
* @error: a #GError placeholder
*
* Set the string feature value.
*
* Since: 0.8.0
*/
void
arv_device_set_string_feature_value (ArvDevice *device, const char *feature, const char *value, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_STRING, feature, error);
if (node != NULL)
arv_gc_string_set_value (ARV_GC_STRING (node), value, error);
}
/**
* arv_device_get_string_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Returns: the string feature value, %NULL on error.
*
* Since: 0.8.0
*/
const char *
arv_device_get_string_feature_value (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_STRING, feature, error);
if (node != NULL)
return arv_gc_string_get_value (ARV_GC_STRING (node), error);
return NULL;
}
/**
* arv_device_set_integer_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @value: new feature value
* @error: a #GError placeholder
*
* Set the integer feature value.
*
* Since: 0.8.0
*/
void
arv_device_set_integer_feature_value (ArvDevice *device, const char *feature, gint64 value, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_INTEGER, feature, error);
if (node != NULL)
arv_gc_integer_set_value (ARV_GC_INTEGER (node), value, error);
}
/**
* arv_device_get_integer_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Returns: the integer feature value, 0 on error.
*
* Since: 0.8.0
*/
gint64
arv_device_get_integer_feature_value (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_INTEGER, feature, error);
if (node != NULL)
return arv_gc_integer_get_value (ARV_GC_INTEGER (node), error);
return 0;
}
/**
* arv_device_get_integer_feature_bounds:
* @device: a #ArvDevice
* @feature: feature name
* @min: (out): minimum feature value
* @max: (out): maximum feature value
* @error: a #GError placeholder
*
* Retrieves feature bounds.
*
* Since: 0.8.0
*/
void
arv_device_get_integer_feature_bounds (ArvDevice *device, const char *feature, gint64 *min, gint64 *max, GError **error)
{
ArvGcNode *node;
if (min != NULL)
*min = G_MININT64;
if (max != NULL)
*max = G_MAXINT64;
node = _get_feature (device, ARV_TYPE_GC_INTEGER, feature, error);
if (node != NULL) {
GError *local_error = NULL;
if (min != NULL) {
gint64 minimum;
minimum = arv_gc_integer_get_min (ARV_GC_INTEGER (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return;
}
*min = minimum;
}
if (max != NULL) {
gint64 maximum;
maximum = arv_gc_integer_get_max (ARV_GC_INTEGER (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return;
}
*max = maximum;
}
}
}
/**
* arv_device_get_integer_feature_increment:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Not all integer features have evenly distributed allowed values, which means the returned increment may not reflect the allowed value
* set.
*
* Returns: feature value increment, or 1 on error.
*
* Since: 0.8.0
*/
gint64
arv_device_get_integer_feature_increment (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_INTEGER, feature, error);
if (node != NULL) {
GError *local_error = NULL;
gint64 increment;
increment = arv_gc_integer_get_inc (ARV_GC_INTEGER (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return 1;
}
return increment;
}
return 1;
}
/**
* arv_device_set_float_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @value: new feature value
* @error: a #GError placeholder
*
* Set the float feature value.
*
* Since: 0.8.0
*/
void
arv_device_set_float_feature_value (ArvDevice *device, const char *feature, double value, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_FLOAT, feature, error);
if (node != NULL)
arv_gc_float_set_value (ARV_GC_FLOAT (node), value, error);
}
/**
* arv_device_get_float_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Returns: the float feature value, 0.0 on error.
*
* Since: 0.8.0
*/
double
arv_device_get_float_feature_value (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_FLOAT, feature, error);
if (node != NULL)
return arv_gc_float_get_value (ARV_GC_FLOAT (node), error);
return 0.0;
}
/**
* arv_device_get_float_feature_bounds:
* @device: a #ArvDevice
* @feature: feature name
* @min: (out): minimum feature value
* @max: (out): maximum feature value
* @error: a #GError placeholder
*
* Retrieves feature bounds.
*
* Since: 0.8.0
*/
void
arv_device_get_float_feature_bounds (ArvDevice *device, const char *feature, double *min, double *max, GError **error)
{
ArvGcNode *node;
if (min != NULL)
*min = -G_MAXDOUBLE;
if (max != NULL)
*max = G_MAXDOUBLE;
node = _get_feature (device, ARV_TYPE_GC_FLOAT, feature, error);
if (node != NULL) {
GError *local_error = NULL;
if (min != NULL) {
double minimum;
minimum = arv_gc_float_get_min (ARV_GC_FLOAT (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return;
}
*min = minimum;
}
if (max != NULL) {
double maximum;
maximum = arv_gc_float_get_max (ARV_GC_FLOAT (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return;
}
*max = maximum;
}
}
}
/**
* arv_device_get_float_feature_increment:
* @device: a #ArvDevice
* @feature: feature name
* @error: a #GError placeholder
*
* Not all float features have evenly distributed allowed values, which means the returned increment may not reflect the allowed value
* set.
*
* Returns: feature value increment, or #G_MINDOUBLE on error.
*
* Since: 0.8.16
*/
double
arv_device_get_float_feature_increment (ArvDevice *device, const char *feature, GError **error)
{
ArvGcNode *node;
node = _get_feature (device, ARV_TYPE_GC_FLOAT, feature, error);
if (node != NULL) {
GError *local_error = NULL;
double increment;
increment = arv_gc_float_get_inc (ARV_GC_FLOAT (node), &local_error);
if (local_error != NULL) {
g_propagate_error (error, local_error);
return G_MINDOUBLE;
}
return increment;
}
return G_MINDOUBLE;
}
/**
* arv_device_set_register_feature_value:
* @device: a #ArvDevice
* @feature: feature name
* @value: new feature value
* @error: a #GError placeholder
*