libexplain
1.4.D001
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00001 /* 00002 * libexplain - a library of system-call-specific strerror replacements 00003 * Copyright (C) 2011, 2013 Peter Miller 00004 * 00005 * This program is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU Lesser General Public License as 00007 * published by the Free Software Foundation; either version 3 of the 00008 * License, or (at your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU Lesser General Public License 00016 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 */ 00018 00019 #include <libexplain/ac/linux/videodev2.h> 00020 #include <libexplain/ac/string.h> 00021 00022 #include <libexplain/buffer/v4l2_buf_type.h> 00023 #include <libexplain/buffer/v4l2_crop.h> 00024 #include <libexplain/buffer/v4l2_rect.h> 00025 #include <libexplain/buffer/pointer.h> 00026 #include <libexplain/is_efault.h> 00027 00028 00029 #ifdef HAVE_LINUX_VIDEODEV2_H 00030 00031 void 00032 explain_buffer_v4l2_crop(explain_string_buffer_t *sb, 00033 const struct v4l2_crop *data, int extra) 00034 { 00035 if (explain_is_efault_pointer(data, sizeof(*data))) 00036 { 00037 explain_buffer_pointer(sb, data); 00038 return; 00039 } 00040 00041 explain_string_buffer_puts(sb, "{ type = "); 00042 explain_buffer_v4l2_buf_type(sb, data->type); 00043 if (extra) 00044 { 00045 explain_string_buffer_puts(sb, ", c = "); 00046 explain_buffer_v4l2_rect(sb, &data->c); 00047 } 00048 explain_string_buffer_puts(sb, " }"); 00049 } 00050 00051 00052 enum explain_v4l2_crop_check_type_t 00053 explain_v4l2_crop_check_type(int fildes, const struct v4l2_crop *data) 00054 { 00055 if (explain_is_efault_pointer(data, sizeof(*data))) 00056 return explain_v4l2_crop_check_type_no_idea; 00057 switch (explain_v4l2_buf_type_check(fildes, data->type)) 00058 { 00059 case explain_v4l2_buf_type_check_no_idea: 00060 default: 00061 return explain_v4l2_crop_check_type_no_idea; 00062 00063 case explain_v4l2_buf_type_check_notsup: 00064 return explain_v4l2_crop_check_type_notsup; 00065 00066 case explain_v4l2_buf_type_check_nosuch: 00067 return explain_v4l2_crop_check_type_nosuch; 00068 00069 case explain_v4l2_buf_type_check_ok: 00070 break; 00071 } 00072 return explain_v4l2_crop_check_type_ok; 00073 } 00074 00075 #endif 00076 00077 /* vim: set ts=8 sw=4 et : */