libexplain/buffer/v4l2_streamparm.c

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/*
 * libexplain - a library of system-call-specific strerror replacements
 * Copyright (C) 2011, 2013 Peter Miller
 *
 * This program 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 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <libexplain/ac/linux/videodev2.h>

#include <libexplain/buffer/pointer.h>
#include <libexplain/buffer/v4l2_buf_type.h>
#include <libexplain/buffer/v4l2_captureparm.h>
#include <libexplain/buffer/v4l2_outputparm.h>
#include <libexplain/buffer/v4l2_streamparm.h>
#include <libexplain/is_efault.h>


#ifdef HAVE_LINUX_VIDEODEV2_H

void
explain_buffer_v4l2_streamparm(explain_string_buffer_t *sb,
    const struct v4l2_streamparm *data, int extra)
{
    if (explain_is_efault_pointer(data, sizeof(*data)))
    {
        explain_buffer_pointer(sb, data);
        return;
    }

    explain_string_buffer_puts(sb, "{ type = ");
    explain_buffer_v4l2_buf_type(sb, data->type);
    if (extra)
    {
        switch (data->type)
        {
        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
            explain_string_buffer_puts(sb, ", parm.capture = ");
            explain_buffer_v4l2_captureparm(sb, &data->parm.capture);
            break;

        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
            explain_string_buffer_puts(sb, ", parm.output = ");
            explain_buffer_v4l2_outputparm(sb, &data->parm.output);
            break;

        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
        case V4L2_BUF_TYPE_VBI_CAPTURE:
        case V4L2_BUF_TYPE_VBI_OUTPUT:
        case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
        case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
        case V4L2_BUF_TYPE_PRIVATE:
#ifdef V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
#endif
#ifdef V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
#endif
        default:
            break;
        }
    }
    explain_string_buffer_puts(sb, " }");
}

#endif

/* vim: set ts=8 sw=4 et : */