libexplain/buffer/video_clip.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/videodev.h>

#include <libexplain/buffer/int32_t.h>
#include <libexplain/buffer/pointer.h>
#include <libexplain/buffer/video_clip.h>
#include <libexplain/is_efault.h>

#ifdef VIDIOCGWIN


void
explain_buffer_video_clip(explain_string_buffer_t *sb,
    const struct video_clip *data)
{
    if (explain_is_efault_pointer(data, sizeof(*data)))
    {
        explain_buffer_pointer(sb, data);
        return;
    }

    explain_string_buffer_puts(sb, "{ ");
    if (data->x || data->y)
    {
        explain_string_buffer_puts(sb, "x = ");
        explain_buffer_int32_t(sb, data->x);
        explain_string_buffer_puts(sb, ", y = ");
        explain_buffer_int32_t(sb, data->y);
        explain_string_buffer_puts(sb, ", ");
    }
    explain_string_buffer_puts(sb, "width = ");
    explain_buffer_int32_t(sb, data->width);
    explain_string_buffer_puts(sb, ", height = ");
    explain_buffer_int32_t(sb, data->height);
    explain_string_buffer_puts(sb, " }");
}


void
explain_buffer_video_clip_array(explain_string_buffer_t *sb,
    const struct video_clip *data, unsigned data_size)
{
    unsigned        j;

    if (explain_is_efault_pointer(data, data_size * sizeof(*data)))
    {
        explain_buffer_pointer(sb, data);
        return;
    }

    explain_string_buffer_puts(sb, "{ ");
    for (j = 0; j < data_size; ++j)
        explain_buffer_video_clip(sb, data + j);
    explain_string_buffer_puts(sb, " }");
}

#endif

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