static void
image_destroy (void *vself)
{
grub_gui_image_t self = vself;
/* Free the scaled bitmap, unless it's a reference to the raw bitmap. */
if (self->bitmap && (self->bitmap != self->raw_bitmap))
grub_video_bitmap_destroy (self->bitmap);
if (self->raw_bitmap)
grub_video_bitmap_destroy (self->raw_bitmap);
grub_free (self);
}
/* Get the icon for the specified class CLASS_NAME. If an icon for
CLASS_NAME already exists in the cache, then a reference to the cached
bitmap is returned. If it is not cached, then it is loaded and cached.
If no icon could be could for CLASS_NAME, then 0 is returned. */
static struct grub_video_bitmap *
get_icon_by_class (grub_gfxmenu_icon_manager_t mgr, const char *class_name)
{
/* First check the icon cache. */
icon_entry_t entry;
for (entry = mgr->cache.next; entry; entry = entry->next)
{
if (grub_strcmp (entry->class_name, class_name) == 0)
return entry->bitmap;
}
if (! mgr->theme_path)
return 0;
/* Otherwise, we search for an icon to load. */
char *theme_dir = grub_get_dirname (mgr->theme_path);
char *icons_dir;
struct grub_video_bitmap *icon;
icon = 0;
/* First try the theme's own icons, from "grub/themes/NAME/icons/" */
icons_dir = grub_resolve_relative_path (theme_dir, "icons/");
if (icons_dir)
{
icon = try_loading_icon (mgr, icons_dir, class_name);
grub_free (icons_dir);
}
grub_free (theme_dir);
if (! icon)
{
const char *icondir;
icondir = grub_env_get ("icondir");
if (icondir)
icon = try_loading_icon (mgr, icondir, class_name);
}
/* No icon was found. */
/* This should probably be noted in the cache, so that a search is not
performed each time an icon for CLASS_NAME is requested. */
if (! icon)
return 0;
/* Insert a new cache entry for this icon. */
entry = grub_malloc (sizeof (*entry));
if (! entry)
{
grub_video_bitmap_destroy (icon);
return 0;
}
entry->class_name = grub_strdup (class_name);
entry->bitmap = icon;
entry->next = mgr->cache.next;
mgr->cache.next = entry; /* Link it into the cache. */
return entry->bitmap;
}
static void
destroy (grub_gfxmenu_box_t self)
{
unsigned i;
for (i = 0; i < BOX_NUM_PIXMAPS; i++)
{
if (self->raw_pixmaps[i])
grub_video_bitmap_destroy(self->raw_pixmaps[i]);
self->raw_pixmaps[i] = 0;
if (self->scaled_pixmaps[i])
grub_video_bitmap_destroy(self->scaled_pixmaps[i]);
self->scaled_pixmaps[i] = 0;
}
grub_free (self->raw_pixmaps);
self->raw_pixmaps = 0;
grub_free (self->scaled_pixmaps);
self->scaled_pixmaps = 0;
/* Free self: must be the last step! */
grub_free (self);
}
/* Clear the icon cache. */
void
grub_gfxmenu_icon_manager_clear_cache (grub_gfxmenu_icon_manager_t mgr)
{
icon_entry_t cur;
icon_entry_t next;
for (cur = mgr->cache.next; cur; cur = next)
{
next = cur->next;
grub_free (cur->class_name);
grub_video_bitmap_destroy (cur->bitmap);
grub_free (cur);
}
mgr->cache.next = 0;
}
static grub_err_t
grub_cmd_tgatest (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
{
struct grub_video_bitmap *bitmap = 0;
if (argc != 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "file name required");
grub_video_reader_tga (&bitmap, args[0]);
if (grub_errno != GRUB_ERR_NONE)
return grub_errno;
grub_video_bitmap_destroy (bitmap);
return GRUB_ERR_NONE;
}
/* This function creates a new scaled version of the bitmap SRC. The new
bitmap has dimensions DST_WIDTH by DST_HEIGHT. The scaling algorithm
is given by SCALE_METHOD. If an error is encountered, the return code is
not equal to GRUB_ERR_NONE, and the bitmap DST is either not created, or
it is destroyed before this function returns.
Supports only direct color modes which have components separated
into bytes (e.g., RGBA 8:8:8:8 or BGR 8:8:8 true color).
But because of this simplifying assumption, the implementation is
greatly simplified. */
static grub_err_t
grub_video_bitmap_create_scaled_internal (struct grub_video_bitmap **dst,
int dst_width, int dst_height,
struct grub_video_bitmap *src,
int scale_method)
{
/* Create the new bitmap. */
grub_err_t ret;
ret = grub_video_bitmap_create (dst, dst_width, dst_height,
src->mode_info.blit_format);
if (ret != GRUB_ERR_NONE)
return ret; /* Error. */
(*dst)->transparent = src->transparent;
switch (scale_method)
{
case GRUB_VIDEO_BITMAP_SCALE_METHOD_FASTEST:
case GRUB_VIDEO_BITMAP_SCALE_METHOD_NEAREST:
ret = scale_nn (*dst, src);
break;
case GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST:
case GRUB_VIDEO_BITMAP_SCALE_METHOD_BILINEAR:
ret = scale_bilinear (*dst, src);
break;
default:
ret = grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid scale method value");
break;
}
if (ret == GRUB_ERR_NONE)
{
/* Success: *dst is now a pointer to the scaled bitmap. */
return GRUB_ERR_NONE;
}
else
{
/* Destroy the bitmap and return the error code. */
grub_video_bitmap_destroy (*dst);
*dst = 0;
return ret;
}
}
/* Try to load an icon for the specified CLASS_NAME in the directory DIR.
Returns 0 if the icon could not be loaded, or returns a pointer to a new
bitmap if it was successful. */
static struct grub_video_bitmap *
try_loading_icon (grub_gfxmenu_icon_manager_t mgr,
const char *dir, const char *class_name)
{
char *path;
int l;
path = grub_malloc (grub_strlen (dir) + grub_strlen (class_name)
+ grub_strlen (icon_extension) + 3);
if (! path)
return 0;
grub_strcpy (path, dir);
l = grub_strlen (path);
if (path[l-1] != '/')
{
path[l] = '/';
path[l+1] = 0;
}
grub_strcat (path, class_name);
grub_strcat (path, icon_extension);
struct grub_video_bitmap *raw_bitmap;
grub_video_bitmap_load (&raw_bitmap, path);
grub_free (path);
grub_errno = GRUB_ERR_NONE; /* Critical to clear the error!! */
if (! raw_bitmap)
return 0;
struct grub_video_bitmap *scaled_bitmap;
grub_video_bitmap_create_scaled (&scaled_bitmap,
mgr->icon_width, mgr->icon_height,
raw_bitmap,
GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST);
grub_video_bitmap_destroy (raw_bitmap);
if (! scaled_bitmap)
return 0;
return scaled_bitmap;
}
static grub_err_t
scale_pixmap (grub_gfxmenu_box_t self, int i, int w, int h)
{
struct grub_video_bitmap **scaled = &self->scaled_pixmaps[i];
struct grub_video_bitmap *raw = self->raw_pixmaps[i];
if (raw == 0)
return grub_errno;
if (w == -1)
w = grub_video_bitmap_get_width (raw);
if (h == -1)
h = grub_video_bitmap_get_height (raw);
if (*scaled == 0
|| ((int) grub_video_bitmap_get_width (*scaled) != w)
|| ((int) grub_video_bitmap_get_height (*scaled) != h))
{
if (*scaled)
{
grub_video_bitmap_destroy (*scaled);
*scaled = 0;
}
/* Don't try to create a bitmap with a zero dimension. */
if (w != 0 && h != 0)
grub_video_bitmap_create_scaled (scaled, w, h, raw,
GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST);
if (grub_errno != GRUB_ERR_NONE)
{
grub_error_push ();
grub_error (grub_errno,
"failed to scale bitmap for styled box pixmap #%d", i);
}
}
return grub_errno;
}
/* This function creates a new scaled version of the bitmap SRC. The new
bitmap has dimensions DST_WIDTH by DST_HEIGHT. The scaling algorithm
is given by SCALE_METHOD. If an error is encountered, the return code is
not equal to GRUB_ERR_NONE, and the bitmap DST is either not created, or
it is destroyed before this function returns.
Supports only direct color modes which have components separated
into bytes (e.g., RGBA 8:8:8:8 or BGR 8:8:8 true color).
But because of this simplifying assumption, the implementation is
greatly simplified. */
grub_err_t
grub_video_bitmap_create_scaled (struct grub_video_bitmap **dst,
int dst_width, int dst_height,
struct grub_video_bitmap *src,
enum grub_video_bitmap_scale_method
scale_method)
{
*dst = 0;
grub_err_t err = verify_source_bitmap(src);
if (err != GRUB_ERR_NONE)
return err;
if (dst_width <= 0 || dst_height <= 0)
return grub_error (GRUB_ERR_BUG,
"requested to scale to a size w/ a zero dimension");
/* Create the new bitmap. */
grub_err_t ret;
ret = grub_video_bitmap_create (dst, dst_width, dst_height,
src->mode_info.blit_format);
if (ret != GRUB_ERR_NONE)
return ret; /* Error. */
ret = grub_video_bitmap_scale (*dst, src, scale_method);
if (ret == GRUB_ERR_NONE)
{
/* Success: *dst is now a pointer to the scaled bitmap. */
return GRUB_ERR_NONE;
}
else
{
/* Destroy the bitmap and return the error code. */
grub_video_bitmap_destroy (*dst);
*dst = 0;
return ret;
}
}
/* Set the specified property NAME on the view to the given string VALUE.
The caller is responsible for the lifetimes of NAME and VALUE. */
static grub_err_t
theme_set_string (grub_gfxmenu_view_t view,
const char *name,
const char *value,
const char *theme_dir,
const char *filename,
int line_num,
int col_num)
{
if (! grub_strcmp ("title-font", name))
view->title_font = grub_font_get (value);
else if (! grub_strcmp ("message-font", name))
view->message_font = grub_font_get (value);
else if (! grub_strcmp ("terminal-font", name))
{
grub_free (view->terminal_font_name);
view->terminal_font_name = grub_strdup (value);
if (! view->terminal_font_name)
return grub_errno;
}
else if (! grub_strcmp ("title-color", name))
grub_video_parse_color (value, &view->title_color);
else if (! grub_strcmp ("message-color", name))
grub_video_parse_color (value, &view->message_color);
else if (! grub_strcmp ("message-bg-color", name))
grub_video_parse_color (value, &view->message_bg_color);
else if (! grub_strcmp ("desktop-image", name))
{
struct grub_video_bitmap *raw_bitmap;
char *path;
path = grub_resolve_relative_path (theme_dir, value);
if (! path)
return grub_errno;
if (grub_video_bitmap_load (&raw_bitmap, path) != GRUB_ERR_NONE)
{
grub_free (path);
return grub_errno;
}
grub_free(path);
grub_video_bitmap_destroy (view->raw_desktop_image);
view->raw_desktop_image = raw_bitmap;
}
else if (! grub_strcmp ("desktop-image-scale-method", name))
{
if (! value || ! grub_strcmp ("stretch", value))
view->desktop_image_scale_method =
GRUB_VIDEO_BITMAP_SELECTION_METHOD_STRETCH;
else if (! grub_strcmp ("crop", value))
view->desktop_image_scale_method =
GRUB_VIDEO_BITMAP_SELECTION_METHOD_CROP;
else if (! grub_strcmp ("padding", value))
view->desktop_image_scale_method =
GRUB_VIDEO_BITMAP_SELECTION_METHOD_PADDING;
else if (! grub_strcmp ("fitwidth", value))
view->desktop_image_scale_method =
GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITWIDTH;
else if (! grub_strcmp ("fitheight", value))
view->desktop_image_scale_method =
GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITHEIGHT;
else
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"Unsupported scale method: %s",
value);
}
else if (! grub_strcmp ("desktop-image-h-align", name))
{
if (! grub_strcmp ("left", value))
view->desktop_image_h_align = GRUB_VIDEO_BITMAP_H_ALIGN_LEFT;
else if (! grub_strcmp ("center", value))
view->desktop_image_h_align = GRUB_VIDEO_BITMAP_H_ALIGN_CENTER;
else if (! grub_strcmp ("right", value))
view->desktop_image_h_align = GRUB_VIDEO_BITMAP_H_ALIGN_RIGHT;
else
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"Unsupported horizontal align method: %s",
value);
}
else if (! grub_strcmp ("desktop-image-v-align", name))
{
if (! grub_strcmp ("top", value))
view->desktop_image_v_align = GRUB_VIDEO_BITMAP_V_ALIGN_TOP;
else if (! grub_strcmp ("center", value))
view->desktop_image_v_align = GRUB_VIDEO_BITMAP_V_ALIGN_CENTER;
else if (! grub_strcmp ("bottom", value))
view->desktop_image_v_align = GRUB_VIDEO_BITMAP_V_ALIGN_BOTTOM;
else
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"Unsupported vertical align method: %s",
value);
}
else if (! grub_strcmp ("desktop-color", name))
grub_video_parse_color (value, &view->desktop_color);
else if (! grub_strcmp ("terminal-box", name))
{
grub_err_t err;
err = grub_gui_recreate_box (&view->terminal_box, value, theme_dir);
if (err != GRUB_ERR_NONE)
return err;
}
else if (! grub_strcmp ("terminal-border", name))
{
view->terminal_border = grub_strtoul (value, 0, 10);
if (grub_errno)
return grub_errno;
}
else if (! grub_strcmp ("terminal-left", name))
{
unsigned int tmp;
int err = theme_get_unsigned_int_from_proportional (value,
view->screen.width,
&tmp);
if (err != GRUB_ERR_NONE)
return err;
view->terminal_rect.x = tmp;
}
else if (! grub_strcmp ("terminal-top", name))
{
unsigned int tmp;
int err = theme_get_unsigned_int_from_proportional (value,
view->screen.height,
&tmp);
if (err != GRUB_ERR_NONE)
return err;
view->terminal_rect.y = tmp;
}
else if (! grub_strcmp ("terminal-width", name))
{
unsigned int tmp;
int err = theme_get_unsigned_int_from_proportional (value,
view->screen.width,
&tmp);
if (err != GRUB_ERR_NONE)
return err;
view->terminal_rect.width = tmp;
}
else if (! grub_strcmp ("terminal-height", name))
{
unsigned int tmp;
int err = theme_get_unsigned_int_from_proportional (value,
view->screen.height,
&tmp);
if (err != GRUB_ERR_NONE)
return err;
view->terminal_rect.height = tmp;
}
else if (! grub_strcmp ("title-text", name))
{
grub_free (view->title_text);
view->title_text = grub_strdup (value);
if (! view->title_text)
return grub_errno;
}
else
{
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"%s:%d:%d unknown property `%s'",
filename, line_num, col_num, name);
}
return grub_errno;
}
grub_err_t
grub_video_bitmap_create_scaled (struct grub_video_bitmap **dst,
int dst_width, int dst_height,
struct grub_video_bitmap *src,
int scale, grub_video_color_t color)
{
int type, method;
int src_width, src_height, width, height;
struct grub_video_fbblit_info dst_info;
struct grub_video_bitmap *tmp = 0;
grub_err_t ret;
*dst = 0;
/* Verify the simplifying assumptions. */
if (src == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"null src bitmap in grub_video_bitmap_create_scaled");
if (src->mode_info.red_field_pos % 8 != 0
|| src->mode_info.green_field_pos % 8 != 0
|| src->mode_info.blue_field_pos % 8 != 0
|| src->mode_info.reserved_field_pos % 8 != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"src format not supported for scale");
if (src->mode_info.width == 0 || src->mode_info.height == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"source bitmap has a zero dimension");
if (dst_width <= 0 || dst_height <= 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"requested to scale to a size w/ a zero dimension");
if (src->mode_info.bytes_per_pixel * 8 != src->mode_info.bpp)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"bitmap to scale has inconsistent Bpp and bpp");
type = scale & GRUB_VIDEO_BITMAP_SCALE_TYPE_MASK;
method = scale & GRUB_VIDEO_BITMAP_SCALE_METHOD_MASK;
src_width = src->mode_info.width;
src_height = src->mode_info.height;
if ((src_width == dst_width) && (src_height == dst_height))
type = GRUB_VIDEO_BITMAP_SCALE_TYPE_CENTER;
if ((type == GRUB_VIDEO_BITMAP_SCALE_TYPE_NORMAL) ||
(((type == GRUB_VIDEO_BITMAP_SCALE_TYPE_MINFIT) ||
(type == GRUB_VIDEO_BITMAP_SCALE_TYPE_MAXFIT)) &&
(src_width * dst_height == src_height * dst_width)))
return grub_video_bitmap_create_scaled_internal (dst, dst_width,
dst_height, src, method);
ret = grub_video_bitmap_create (dst, dst_width, dst_height,
src->mode_info.blit_format);
if (ret != GRUB_ERR_NONE)
return ret; /* Error. */
(*dst)->transparent = src->transparent;
dst_info.mode_info = &(*dst)->mode_info;
dst_info.data = (*dst)->data;
color = map_color (dst_info.mode_info, color);
switch (type)
{
case GRUB_VIDEO_BITMAP_SCALE_TYPE_MINFIT:
case GRUB_VIDEO_BITMAP_SCALE_TYPE_MAXFIT:
{
if ((src_width * dst_height > src_height * dst_width) ==
(type == GRUB_VIDEO_BITMAP_SCALE_TYPE_MAXFIT))
{
width = src_width * dst_height / src_height;
height = dst_height;
}
else
{
width = dst_width;
height = src_height * dst_width / src_width;
}
ret = grub_video_bitmap_create_scaled_internal (&tmp, width, height,
src, method);
if (ret)
return ret;
src = tmp;
src_width = width;
src_height = height;
}
case GRUB_VIDEO_BITMAP_SCALE_TYPE_CENTER:
{
int src_x, src_y, dst_x, dst_y;
struct grub_video_fbblit_info src_info;
width = (src_width > dst_width) ? dst_width : src_width;
height = (src_height > dst_height) ? dst_height : src_height;
src_x = (src_width - width) >> 1;
src_y = (src_height - height) >> 1;
dst_x = (dst_width - width) >> 1;
dst_y = (dst_height - height) >> 1;
if (dst_y)
{
grub_video_fbfill (&dst_info, color, 0, 0, dst_width, dst_y);
grub_video_fbfill (&dst_info, color, 0, dst_y + height,
dst_width, dst_height - dst_y - height);
}
if (dst_x)
{
grub_video_fbfill (&dst_info, color, 0, dst_y, dst_x, height);
grub_video_fbfill (&dst_info, color, dst_x + width, dst_y,
dst_width - dst_x - width, height);
}
src_info.mode_info = &src->mode_info;
src_info.data = src->data;
grub_video_fbblit (&dst_info, &src_info, GRUB_VIDEO_BLIT_REPLACE,
dst_x, dst_y, width, height, src_x, src_y);
break;
}
case GRUB_VIDEO_BITMAP_SCALE_TYPE_TILING:
{
int x, y;
struct grub_video_fbblit_info src_info;
src_info.mode_info = &src->mode_info;
src_info.data = src->data;
for (y = 0; y < dst_height; y += src_height)
{
for (x = 0; x < dst_width; x += src_width)
{
int w, h;
w = src_width;
if (x + w > dst_width)
w = dst_width - x;
h = src_height;
if (y + h > dst_height)
h = dst_height - y;
grub_video_fbblit (&dst_info, &src_info,
GRUB_VIDEO_BLIT_REPLACE,
x, y, w, h, 0, 0);
}
}
break;
}
default:
return grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid scale type value");
}
if (tmp)
grub_video_bitmap_destroy (tmp);
return 0;
}
/* This function creates a new scaled version of the bitmap SRC. The new
bitmap has dimensions DST_WIDTH by DST_HEIGHT. The scaling algorithm
is given by SCALE_METHOD. If an error is encountered, the return code is
not equal to GRUB_ERR_NONE, and the bitmap DST is either not created, or
it is destroyed before this function returns.
Supports only direct color modes which have components separated
into bytes (e.g., RGBA 8:8:8:8 or BGR 8:8:8 true color).
But because of this simplifying assumption, the implementation is
greatly simplified. */
grub_err_t
grub_video_bitmap_create_scaled (struct grub_video_bitmap **dst,
int dst_width, int dst_height,
struct grub_video_bitmap *src,
enum grub_video_bitmap_scale_method
scale_method)
{
*dst = 0;
/* Verify the simplifying assumptions. */
if (src == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"null src bitmap in grub_video_bitmap_create_scaled");
if (src->mode_info.red_field_pos % 8 != 0
|| src->mode_info.green_field_pos % 8 != 0
|| src->mode_info.blue_field_pos % 8 != 0
|| src->mode_info.reserved_field_pos % 8 != 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"src format not supported for scale");
if (src->mode_info.width == 0 || src->mode_info.height == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"source bitmap has a zero dimension");
if (dst_width <= 0 || dst_height <= 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"requested to scale to a size w/ a zero dimension");
if (src->mode_info.bytes_per_pixel * 8 != src->mode_info.bpp)
return grub_error (GRUB_ERR_BAD_ARGUMENT,
"bitmap to scale has inconsistent Bpp and bpp");
/* Create the new bitmap. */
grub_err_t ret;
ret = grub_video_bitmap_create (dst, dst_width, dst_height,
src->mode_info.blit_format);
if (ret != GRUB_ERR_NONE)
return ret; /* Error. */
switch (scale_method)
{
case GRUB_VIDEO_BITMAP_SCALE_METHOD_FASTEST:
case GRUB_VIDEO_BITMAP_SCALE_METHOD_NEAREST:
ret = scale_nn (*dst, src);
break;
case GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST:
case GRUB_VIDEO_BITMAP_SCALE_METHOD_BILINEAR:
ret = scale_bilinear (*dst, src);
break;
default:
ret = grub_error (GRUB_ERR_BAD_ARGUMENT, "Invalid scale_method value");
break;
}
if (ret == GRUB_ERR_NONE)
{
/* Success: *dst is now a pointer to the scaled bitmap. */
return GRUB_ERR_NONE;
}
else
{
/* Destroy the bitmap and return the error code. */
grub_video_bitmap_destroy (*dst);
*dst = 0;
return ret;
}
}
grub_err_t
grub_video_bitmap_scale_proportional (struct grub_video_bitmap **dst,
int dst_width, int dst_height,
struct grub_video_bitmap *src,
enum grub_video_bitmap_scale_method
scale_method,
grub_video_bitmap_selection_method_t
selection_method,
grub_video_bitmap_v_align_t v_align,
grub_video_bitmap_h_align_t h_align)
{
*dst = 0;
grub_err_t ret = verify_source_bitmap(src);
if (ret != GRUB_ERR_NONE)
return ret;
if (dst_width <= 0 || dst_height <= 0)
return grub_error (GRUB_ERR_BUG,
"requested to scale to a size w/ a zero dimension");
ret = grub_video_bitmap_create (dst, dst_width, dst_height,
src->mode_info.blit_format);
if (ret != GRUB_ERR_NONE)
return ret; /* Error. */
unsigned dx0 = 0;
unsigned dy0 = 0;
unsigned dw = dst_width;
unsigned dh = dst_height;
unsigned sx0 = 0;
unsigned sy0 = 0;
unsigned sw = src->mode_info.width;
unsigned sh = src->mode_info.height;
switch (selection_method)
{
case GRUB_VIDEO_BITMAP_SELECTION_METHOD_CROP:
/* Comparing sw/sh VS dw/dh. */
if (sw * dh < dw * sh)
ret = make_v_align (&sy0, &sh, sw * dh / dw, v_align);
else
ret = make_h_align (&sx0, &sw, sh * dw / dh, h_align);
break;
case GRUB_VIDEO_BITMAP_SELECTION_METHOD_PADDING:
if (sw * dh < dw * sh)
ret = make_h_align (&dx0, &dw, sw * dh / sh, h_align);
else
ret = make_v_align (&dy0, &dh, sh * dw / sw, v_align);
break;
case GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITWIDTH:
if (sw * dh < dw * sh)
ret = make_v_align (&sy0, &sh, sw * dh / dw, v_align);
else
ret = make_v_align (&dy0, &dh, sh * dw / sw, v_align);
break;
case GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITHEIGHT:
if (sw * dh < dw * sh)
ret = make_h_align (&dx0, &dw, sw * dh / sh, h_align);
else
ret = make_h_align (&sx0, &sw, sh * dw / dh, h_align);
break;
default:
ret = grub_error (GRUB_ERR_BUG, "Invalid selection_method value");
break;
}
if (ret == GRUB_ERR_NONE)
{
/* Backup original data. */
int src_width_orig = src->mode_info.width;
int src_height_orig = src->mode_info.height;
grub_uint8_t *src_data_orig = src->data;
int dst_width_orig = (*dst)->mode_info.width;
int dst_height_orig = (*dst)->mode_info.height;
grub_uint8_t *dst_data_orig = (*dst)->data;
int dstride = (*dst)->mode_info.pitch;
int sstride = src->mode_info.pitch;
/* bytes_per_pixel is the same for both src and dst. */
int bytes_per_pixel = src->mode_info.bytes_per_pixel;
/* Crop src and dst. */
src->mode_info.width = sw;
src->mode_info.height = sh;
src->data = (grub_uint8_t *) src->data + sx0 * bytes_per_pixel
+ sy0 * sstride;
(*dst)->mode_info.width = dw;
(*dst)->mode_info.height = dh;
(*dst)->data = (grub_uint8_t *) (*dst)->data + dx0 * bytes_per_pixel
+ dy0 * dstride;
/* Scale our image. */
ret = grub_video_bitmap_scale (*dst, src, scale_method);
/* Restore original data. */
src->mode_info.width = src_width_orig;
src->mode_info.height = src_height_orig;
src->data = src_data_orig;
(*dst)->mode_info.width = dst_width_orig;
(*dst)->mode_info.height = dst_height_orig;
(*dst)->data = dst_data_orig;
}
if (ret == GRUB_ERR_NONE)
{
/* Success: *dst is now a pointer to the scaled bitmap. */
return GRUB_ERR_NONE;
}
else
{
/* Destroy the bitmap and return the error code. */
grub_video_bitmap_destroy (*dst);
*dst = 0;
return ret;
}
}
static grub_err_t
grub_video_reader_tga (struct grub_video_bitmap **bitmap,
const char *filename)
{
grub_file_t file;
grub_ssize_t pos;
struct grub_tga_header header;
int has_alpha;
file = grub_buffile_open (filename, 0);
if (! file)
return grub_errno;
/* TGA Specification states that we SHOULD start by reading
ID from end of file, but we really don't care about that as we are
not going to support developer area & extensions at this point. */
/* Read TGA header from beginning of file. */
if (grub_file_read (file, &header, sizeof (header))
!= sizeof (header))
{
grub_file_close (file);
return grub_errno;
}
/* Skip ID field. */
pos = grub_file_tell (file);
pos += header.id_length;
grub_file_seek (file, pos);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (file);
return grub_errno;
}
#if defined(TGA_DEBUG)
grub_printf("tga: header\n");
dump_int_field(header.id_length);
dump_int_field(header.color_map_type);
dump_int_field(header.image_type);
dump_int_field(header.color_map_first_index);
dump_int_field(header.color_map_length);
dump_int_field(header.color_map_bpp);
dump_int_field(header.image_x_origin);
dump_int_field(header.image_y_origin);
dump_int_field(header.image_width);
dump_int_field(header.image_height);
dump_int_field(header.image_bpp);
dump_int_field(header.image_descriptor);
#endif
/* Check that bitmap encoding is supported. */
switch (header.image_type)
{
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
break;
default:
grub_file_close (file);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"unsupported bitmap format (unknown encoding)");
}
/* Check that bitmap depth is supported. */
switch (header.image_bpp)
{
case 24:
has_alpha = 0;
break;
case 32:
has_alpha = 1;
break;
default:
grub_file_close (file);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"unsupported bitmap format (bpp=%d)",
header.image_bpp);
}
/* Allocate bitmap. If there is alpha information store it too. */
if (has_alpha)
{
grub_video_bitmap_create (bitmap, header.image_width,
header.image_height,
GRUB_VIDEO_BLIT_FORMAT_RGBA_8888);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (file);
return grub_errno;
}
/* Load bitmap data. */
switch (header.image_type)
{
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
tga_load_truecolor_R8G8B8A8 (*bitmap, &header, file);
break;
case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
tga_load_truecolor_rle_R8G8B8A8 (*bitmap, &header, file);
break;
}
}
else
{
grub_video_bitmap_create (bitmap, header.image_width,
header.image_height,
GRUB_VIDEO_BLIT_FORMAT_RGB_888);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (file);
return grub_errno;
}
/* Load bitmap data. */
switch (header.image_type)
{
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
tga_load_truecolor_R8G8B8 (*bitmap, &header, file);
break;
case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
tga_load_truecolor_rle_R8G8B8 (*bitmap, &header, file);
break;
}
}
/* If there was a loading problem, destroy bitmap. */
if (grub_errno != GRUB_ERR_NONE)
{
grub_video_bitmap_destroy (*bitmap);
*bitmap = 0;
}
grub_file_close (file);
return grub_errno;
}
static grub_err_t
grub_video_reader_tga (struct grub_video_bitmap **bitmap,
const char *filename)
{
grub_ssize_t pos;
struct tga_data data;
grub_memset (&data, 0, sizeof (data));
data.file = grub_buffile_open (filename, 0);
if (! data.file)
return grub_errno;
/* TGA Specification states that we SHOULD start by reading
ID from end of file, but we really don't care about that as we are
not going to support developer area & extensions at this point. */
/* Read TGA header from beginning of file. */
if (grub_file_read (data.file, &data.hdr, sizeof (data.hdr))
!= sizeof (data.hdr))
{
grub_file_close (data.file);
return grub_errno;
}
/* Skip ID field. */
pos = grub_file_tell (data.file);
pos += data.hdr.id_length;
grub_file_seek (data.file, pos);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (data.file);
return grub_errno;
}
grub_dprintf("tga", "tga: header\n");
dump_int_field(data.hdr.id_length);
dump_int_field(data.hdr.color_map_type);
dump_int_field(data.hdr.image_type);
dump_int_field(data.hdr.color_map_first_index);
dump_int_field(data.hdr.color_map_length);
dump_int_field(data.hdr.color_map_bpp);
dump_int_field(data.hdr.image_x_origin);
dump_int_field(data.hdr.image_y_origin);
dump_int_field(data.hdr.image_width);
dump_int_field(data.hdr.image_height);
dump_int_field(data.hdr.image_bpp);
dump_int_field(data.hdr.image_descriptor);
data.image_width = grub_le_to_cpu16 (data.hdr.image_width);
data.image_height = grub_le_to_cpu16 (data.hdr.image_height);
/* Check that bitmap encoding is supported. */
switch (data.hdr.image_type)
{
case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
case GRUB_TGA_IMAGE_TYPE_RLE_BLACK_AND_WHITE:
case GRUB_TGA_IMAGE_TYPE_RLE_INDEXCOLOR:
data.uses_rle = 1;
break;
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_BLACK_AND_WHITE:
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_INDEXCOLOR:
data.uses_rle = 0;
break;
default:
grub_file_close (data.file);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"unsupported bitmap format (unknown encoding %d)", data.hdr.image_type);
}
data.bpp = data.hdr.image_bpp / 8;
/* Check that bitmap depth is supported. */
switch (data.hdr.image_type)
{
case GRUB_TGA_IMAGE_TYPE_RLE_BLACK_AND_WHITE:
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_BLACK_AND_WHITE:
if (data.hdr.image_bpp != 8)
{
grub_file_close (data.file);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"unsupported bitmap format (bpp=%d)",
data.hdr.image_bpp);
}
grub_video_bitmap_create (bitmap, data.image_width,
data.image_height,
GRUB_VIDEO_BLIT_FORMAT_RGB_888);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (data.file);
return grub_errno;
}
data.bitmap = *bitmap;
/* Load bitmap data. */
tga_load_grayscale (&data);
break;
case GRUB_TGA_IMAGE_TYPE_RLE_INDEXCOLOR:
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_INDEXCOLOR:
if (data.hdr.image_bpp != 8
|| data.hdr.color_map_bpp != 24
|| data.hdr.color_map_first_index != 0)
{
grub_file_close (data.file);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"unsupported bitmap format (bpp=%d)",
data.hdr.image_bpp);
}
grub_video_bitmap_create (bitmap, data.image_width,
data.image_height,
GRUB_VIDEO_BLIT_FORMAT_RGB_888);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (data.file);
return grub_errno;
}
data.bitmap = *bitmap;
/* Load bitmap data. */
tga_load_palette (&data);
tga_load_index_color (&data);
break;
case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
switch (data.hdr.image_bpp)
{
case 24:
grub_video_bitmap_create (bitmap, data.image_width,
data.image_height,
GRUB_VIDEO_BLIT_FORMAT_RGB_888);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (data.file);
return grub_errno;
}
data.bitmap = *bitmap;
/* Load bitmap data. */
tga_load_truecolor_R8G8B8 (&data);
break;
case 32:
grub_video_bitmap_create (bitmap, data.image_width,
data.image_height,
GRUB_VIDEO_BLIT_FORMAT_RGBA_8888);
if (grub_errno != GRUB_ERR_NONE)
{
grub_file_close (data.file);
return grub_errno;
}
data.bitmap = *bitmap;
/* Load bitmap data. */
tga_load_truecolor_R8G8B8A8 (&data);
break;
default:
grub_file_close (data.file);
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"unsupported bitmap format (bpp=%d)",
data.hdr.image_bpp);
}
}
/* If there was a loading problem, destroy bitmap. */
if (grub_errno != GRUB_ERR_NONE)
{
grub_video_bitmap_destroy (*bitmap);
*bitmap = 0;
}
grub_file_close (data.file);
return grub_errno;
}