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/* videoinfo.c - command to list video modes. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/video.h>
#include <grub/dl.h>
#include <grub/env.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/command.h>
#include <grub/i18n.h>
GRUB_MOD_LICENSE ("GPLv3+");
static unsigned height, width, depth;
static int
hook (const struct grub_video_mode_info *info)
{
if (height && width && (info->width != width || info->height != height))
return 0;
if (depth && info->bpp != depth)
return 0;
if (info->mode_number == GRUB_VIDEO_MODE_NUMBER_INVALID)
grub_printf (" ");
else
grub_printf (" 0x%03x ", info->mode_number);
grub_printf ("%4d x %4d x %2d ", info->width, info->height, info->bpp);
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_PURE_TEXT)
grub_printf ("Text-only ");
/* Show mask and position details for direct color modes. */
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_RGB)
grub_printf ("Direct, mask: %d/%d/%d/%d pos: %d/%d/%d/%d",
info->red_mask_size,
info->green_mask_size,
info->blue_mask_size,
info->reserved_mask_size,
info->red_field_pos,
info->green_field_pos,
info->blue_field_pos,
info->reserved_field_pos);
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_INDEX_COLOR)
grub_printf ("Packed ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_YUV)
grub_printf ("YUV ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_PLANAR)
grub_printf ("Planar ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_HERCULES)
grub_printf ("Hercules ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_CGA)
grub_printf ("CGA ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_NONCHAIN4)
grub_printf ("Non-chain 4 ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_1BIT_BITMAP)
grub_printf ("Monochrome ");
if (info->mode_type & GRUB_VIDEO_MODE_TYPE_UNKNOWN)
grub_printf ("Unknown ");
grub_printf ("\n");
return 0;
}
static grub_err_t
grub_cmd_videoinfo (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
{
grub_video_adapter_t adapter;
grub_video_driver_id_t id;
height = width = depth = 0;
if (argc)
{
char *ptr;
ptr = args[0];
width = grub_strtoul (ptr, &ptr, 0);
if (grub_errno)
return grub_errno;
if (*ptr != 'x')
return grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid mode specification");
ptr++;
height = grub_strtoul (ptr, &ptr, 0);
if (grub_errno)
return grub_errno;
if (*ptr == 'x')
{
ptr++;
depth = grub_strtoul (ptr, &ptr, 0);
if (grub_errno)
return grub_errno;
}
}
#ifdef GRUB_MACHINE_PCBIOS
if (grub_strcmp (cmd->name, "vbeinfo") == 0)
grub_dl_load ("vbe");
#endif
id = grub_video_get_driver_id ();
grub_printf ("List of supported video modes:\n");
grub_printf ("Legend: P=Packed pixel, D=Direct color, "
"mask/pos=R/G/B/reserved\n");
FOR_VIDEO_ADAPTERS (adapter)
{
grub_printf ("Adapter '%s':\n", adapter->name);
if (!adapter->iterate)
{
grub_printf (" No info available\n");
continue;
}
if (adapter->id != id)
{
if (adapter->init ())
{
grub_printf (" Failed\n");
grub_errno = GRUB_ERR_NONE;
continue;
}
}
if (adapter->print_adapter_specific_info)
adapter->print_adapter_specific_info ();
adapter->iterate (hook);
if (adapter->id != id)
{
if (adapter->fini ())
{
grub_errno = GRUB_ERR_NONE;
continue;
}
}
}
return GRUB_ERR_NONE;
}
static grub_command_t cmd;
#ifdef GRUB_MACHINE_PCBIOS
static grub_command_t cmd_vbe;
#endif
GRUB_MOD_INIT(videoinfo)
{
cmd = grub_register_command ("videoinfo", grub_cmd_videoinfo, "[WxH[xD]]",
N_("List available video modes. If "
"resolution is given show only modes"
" matching it."));
#ifdef GRUB_MACHINE_PCBIOS
cmd_vbe = grub_register_command ("vbeinfo", grub_cmd_videoinfo, "[WxH[xD]]",
N_("List available video modes. If "
"resolution is given show only modes"
" matching it."));
#endif
}
GRUB_MOD_FINI(videoinfo)
{
grub_unregister_command (cmd);
#ifdef GRUB_MACHINE_PCBIOS
grub_unregister_command (cmd_vbe);
#endif
}
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