62c82ab93f
Introduce a new field in the controls serialization protocol to allow discerning which ControlIdMap a ControlInfoMap refers to. The newly introduced IdMapType enumeration describes the possible info maps: - Either the globally available controls::controls and properties::properties maps, which are valid across IPC boundaries - A ControlIdMap created locally by the V4L2 device, which is not valid across the IPC boundaries At de-serialization time the idMapType field is inspected and - If the idmap is a globally defined one, there's no need to create new ControlId instances when populating the de-serialized ControlInfoMap. Use the globally available map to retrieve the ControlId reference and use it. - If the idmap is a map only available locally, create a new ControlId as it used to happen before this patch. As a direct consequence, this change allows us to perform lookup by ControlId reference on de-serialized ControlIdMap that refers to the libcamera defined controls::controls and properties::properties. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
55 lines
948 B
C
55 lines
948 B
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* ipa_controls.h - IPA Control handling
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*/
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#ifndef __LIBCAMERA_IPA_CONTROLS_H__
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#define __LIBCAMERA_IPA_CONTROLS_H__
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define IPA_CONTROLS_FORMAT_VERSION 1
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enum ipa_controls_id_map_type {
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IPA_CONTROL_ID_MAP_CONTROLS,
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IPA_CONTROL_ID_MAP_PROPERTIES,
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IPA_CONTROL_ID_MAP_V4L2,
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};
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struct ipa_controls_header {
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uint32_t version;
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uint32_t handle;
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uint32_t entries;
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uint32_t size;
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uint32_t data_offset;
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enum ipa_controls_id_map_type id_map_type;
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uint32_t reserved[2];
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};
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struct ipa_control_value_entry {
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uint32_t id;
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uint8_t type;
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uint8_t is_array;
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uint16_t count;
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uint32_t offset;
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uint32_t padding[1];
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};
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struct ipa_control_info_entry {
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uint32_t id;
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uint32_t type;
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uint32_t offset;
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uint32_t padding[1];
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* __LIBCAMERA_IPA_CONTROLS_H__ */
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