soc_mediabus.h

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/*
 * SoC-camera Media Bus API extensions
 *
 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef SOC_MEDIABUS_H
#define SOC_MEDIABUS_H

#include <linux/videodev2.h>
#include <linux/v4l2-mediabus.h>

enum soc_mbus_packing {
    SOC_MBUS_PACKING_NONE,
    SOC_MBUS_PACKING_2X8_PADHI,
    SOC_MBUS_PACKING_2X8_PADLO,
    SOC_MBUS_PACKING_EXTEND16,
    SOC_MBUS_PACKING_VARIABLE,
    SOC_MBUS_PACKING_1_5X8,
};

enum soc_mbus_order {
    SOC_MBUS_ORDER_LE,
    SOC_MBUS_ORDER_BE,
};

enum soc_mbus_layout {
    SOC_MBUS_LAYOUT_PACKED = 0,
    SOC_MBUS_LAYOUT_PLANAR_2Y_U_V,
    SOC_MBUS_LAYOUT_PLANAR_2Y_C,
    SOC_MBUS_LAYOUT_PLANAR_Y_C,
};

struct soc_mbus_pixelfmt {
    const char      *name;
    u32         fourcc;
    enum soc_mbus_packing   packing;
    enum soc_mbus_order order;
    enum soc_mbus_layout    layout;
    u8          bits_per_sample;
};

struct soc_mbus_lookup {
    enum v4l2_mbus_pixelcode    code;
    struct soc_mbus_pixelfmt    fmt;
};

const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc(
    enum v4l2_mbus_pixelcode code,
    const struct soc_mbus_lookup *lookup,
    int n);
const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
    enum v4l2_mbus_pixelcode code);
s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf);
s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf,
            u32 bytes_per_line, u32 height);
int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
            unsigned int *numerator, unsigned int *denominator);
unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
                    unsigned int flags);

#endif