/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Support for Intel Camera Imaging ISP subsystem.
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* Copyright (c) 2015, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __IA_CSS_METADATA_H
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#define __IA_CSS_METADATA_H
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/* @file
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* This file contains structure for processing sensor metadata.
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*/
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#include <type_support.h>
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#include "ia_css_types.h"
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#include "ia_css_stream_format.h"
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/* Metadata configuration. This data structure contains necessary info
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* to process sensor metadata.
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*/
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struct ia_css_metadata_config {
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enum atomisp_input_format data_type; /** Data type of CSI-2 embedded
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data. The default value is ATOMISP_INPUT_FORMAT_EMBEDDED. For
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certain sensors, user can choose non-default data type for embedded
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data. */
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struct ia_css_resolution resolution; /** Resolution */
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};
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struct ia_css_metadata_info {
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struct ia_css_resolution resolution; /** Resolution */
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u32 stride; /** Stride in bytes */
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u32 size; /** Total size in bytes */
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};
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struct ia_css_metadata {
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struct ia_css_metadata_info info; /** Layout info */
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ia_css_ptr address; /** CSS virtual address */
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u32 exp_id;
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/** Exposure ID, see ia_css_event_public.h for more detail */
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};
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#define SIZE_OF_IA_CSS_METADATA_STRUCT sizeof(struct ia_css_metadata)
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/* @brief Allocate a metadata buffer.
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* @param[in] metadata_info Metadata info struct, contains details on metadata buffers.
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* @return Pointer of metadata buffer or NULL (if error)
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*
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* This function allocates a metadata buffer according to the properties
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* specified in the metadata_info struct.
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*/
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struct ia_css_metadata *
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ia_css_metadata_allocate(const struct ia_css_metadata_info *metadata_info);
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/* @brief Free a metadata buffer.
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*
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* @param[in] metadata Pointer of metadata buffer.
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* @return None
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*
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* This function frees a metadata buffer.
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*/
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void
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ia_css_metadata_free(struct ia_css_metadata *metadata);
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#endif /* __IA_CSS_METADATA_H */
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