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2006-07-29 Vesa Jaaskelainen <chaac@nic.fi>

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* include/grub/video.h: Code cleanup.

        * include/grub/i386/pc/vbe.h: Likewise.

        * video/i386/pc/vbe.c: Likewise.

        * video/i386/pc/vbeblit.c: Likewise.

        * video/i386/pc/vbefill.c: Likewise.

        * video/video.c: Likewise.  Also added more comments.
This commit is contained in:
chaac 2006-07-29 11:22:52 +00:00
parent 5915059b61
commit 684a8eff89
7 changed files with 316 additions and 339 deletions
Download patch file Download diff file Expand all files Collapse all files

49
video/video.c
View file

@ -27,6 +27,7 @@ static grub_video_adapter_t grub_video_adapter_list;
/* Active video adapter. */
static grub_video_adapter_t grub_video_adapter_active;
/* Register video driver. */
void
grub_video_register (grub_video_adapter_t adapter)
{
@ -34,29 +35,32 @@ grub_video_register (grub_video_adapter_t adapter)
grub_video_adapter_list = adapter;
}
/* Unregister video driver. */
void
grub_video_unregister (grub_video_adapter_t adapter)
{
grub_video_adapter_t *p, q;
for (p = &grub_video_adapter_list, q = *p; q; p = &(q->next), q = q->next)
if (q == adapter)
{
*p = q->next;
break;
}
}
}
/* Iterate thru all registered video drivers. */
void
grub_video_iterate (int (*hook) (grub_video_adapter_t adapter))
{
grub_video_adapter_t p;
for (p = grub_video_adapter_list; p; p = p->next)
if (hook (p))
break;
}
/* Setup specified video mode. */
grub_err_t
grub_video_setup (unsigned int width, unsigned int height,
unsigned int mode_type)
@ -70,11 +74,11 @@ grub_video_setup (unsigned int width, unsigned int height,
grub_video_adapter_active->fini ();
if (grub_errno != GRUB_ERR_NONE)
return grub_errno;
/* Mark active adapter as not set. */
grub_video_adapter_active = 0;
}
/* Loop thru all possible video adapter trying to find requested mode. */
for (p = grub_video_adapter_list; p; p = p->next)
{
@ -86,7 +90,7 @@ grub_video_setup (unsigned int width, unsigned int height,
continue;
}
/* Try to initialize video mode. */
/* Try to initialize video mode. */
p->setup (width, height, mode_type);
if (grub_errno == GRUB_ERR_NONE)
{
@ -96,19 +100,20 @@ grub_video_setup (unsigned int width, unsigned int height,
return GRUB_ERR_NONE;
}
else
grub_errno = GRUB_ERR_NONE;
grub_errno = GRUB_ERR_NONE;
/* No valid mode found in this adapter, finalize adapter. */
p->fini ();
if (grub_errno != GRUB_ERR_NONE)
return grub_errno;
}
/* We couldn't find suitable adapter for specified mode. */
return grub_error (GRUB_ERR_UNKNOWN_DEVICE,
"Can't locate valid adapter for mode");
}
/* Restore back to initial mode (where applicaple). */
grub_err_t
grub_video_restore (void)
{
@ -117,21 +122,23 @@ grub_video_restore (void)
grub_video_adapter_active->fini ();
if (grub_errno != GRUB_ERR_NONE)
return grub_errno;
grub_video_adapter_active = 0;
}
return GRUB_ERR_NONE;
}
/* Get information about active video mode. */
grub_err_t
grub_video_get_info (struct grub_video_mode_info *mode_info)
{
if (! grub_video_adapter_active)
return grub_error (GRUB_ERR_BAD_DEVICE, "No video mode activated");
return grub_video_adapter_active->get_info (mode_info);
}
/* Determine optimized blitting formation for specified video mode info. */
enum grub_video_blit_format
grub_video_get_blit_format (struct grub_video_mode_info *mode_info)
{
@ -179,26 +186,29 @@ grub_video_get_blit_format (struct grub_video_mode_info *mode_info)
return GRUB_VIDEO_BLIT_FORMAT_INDEXCOLOR;
}
/* Set new indexed color palette entries. */
grub_err_t
grub_video_set_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data)
{
if (! grub_video_adapter_active)
return grub_error (GRUB_ERR_BAD_DEVICE, "No video mode activated");
return grub_video_adapter_active->set_palette (start, count, palette_data);
}
/* Get indexed color palette entries. */
grub_err_t
grub_video_get_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data)
{
if (! grub_video_adapter_active)
return grub_error (GRUB_ERR_BAD_DEVICE, "No video mode activated");
return grub_video_adapter_active->get_palette (start, count, palette_data);
}
/* Set viewport dimensions. */
grub_err_t
grub_video_set_viewport (unsigned int x, unsigned int y,
unsigned int width, unsigned int height)
@ -209,6 +219,7 @@ grub_video_set_viewport (unsigned int x, unsigned int y,
return grub_video_adapter_active->set_viewport (x, y, width, height);
}
/* Get viewport dimensions. */
grub_err_t
grub_video_get_viewport (unsigned int *x, unsigned int *y,
unsigned int *width, unsigned int *height)
@ -219,6 +230,7 @@ grub_video_get_viewport (unsigned int *x, unsigned int *y,
return grub_video_adapter_active->get_viewport (x, y, width, height);
}
/* Map color name to adapter specific color. */
grub_video_color_t
grub_video_map_color (grub_uint32_t color_name)
{
@ -228,6 +240,7 @@ grub_video_map_color (grub_uint32_t color_name)
return grub_video_adapter_active->map_color (color_name);
}
/* Map RGB value to adapter specific color. */
grub_video_color_t
grub_video_map_rgb (grub_uint8_t red, grub_uint8_t green, grub_uint8_t blue)
{
@ -237,6 +250,7 @@ grub_video_map_rgb (grub_uint8_t red, grub_uint8_t green, grub_uint8_t blue)
return grub_video_adapter_active->map_rgb (red, green, blue);
}
/* Map RGBA value to adapter specific color. */
grub_video_color_t
grub_video_map_rgba (grub_uint8_t red, grub_uint8_t green, grub_uint8_t blue,
grub_uint8_t alpha)
@ -247,6 +261,7 @@ grub_video_map_rgba (grub_uint8_t red, grub_uint8_t green, grub_uint8_t blue,
return grub_video_adapter_active->map_rgba (red, green, blue, alpha);
}
/* Fill rectangle using specified color. */
grub_err_t
grub_video_fill_rect (grub_video_color_t color, int x, int y,
unsigned int width, unsigned int height)
@ -257,6 +272,7 @@ grub_video_fill_rect (grub_video_color_t color, int x, int y,
return grub_video_adapter_active->fill_rect (color, x, y, width, height);
}
/* Blit glyph to screen using specified color. */
grub_err_t
grub_video_blit_glyph (struct grub_font_glyph *glyph,
grub_video_color_t color, int x, int y)
@ -267,6 +283,7 @@ grub_video_blit_glyph (struct grub_font_glyph *glyph,
return grub_video_adapter_active->blit_glyph (glyph, color, x, y);
}
/* Blit bitmap to screen. */
grub_err_t
grub_video_blit_bitmap (struct grub_video_bitmap *bitmap,
int x, int y, int offset_x, int offset_y,
@ -280,6 +297,7 @@ grub_video_blit_bitmap (struct grub_video_bitmap *bitmap,
width, height);
}
/* Blit render target to active render target. */
grub_err_t
grub_video_blit_render_target (struct grub_video_render_target *target,
int x, int y, int offset_x, int offset_y,
@ -293,6 +311,7 @@ grub_video_blit_render_target (struct grub_video_render_target *target,
width, height);
}
/* Scroll viewport and fill new areas with specified color. */
grub_err_t
grub_video_scroll (grub_video_color_t color, int dx, int dy)
{
@ -302,6 +321,7 @@ grub_video_scroll (grub_video_color_t color, int dx, int dy)
return grub_video_adapter_active->scroll (color, dx, dy);
}
/* Swap buffers (swap active render target). */
grub_err_t
grub_video_swap_buffers (void)
{
@ -311,6 +331,7 @@ grub_video_swap_buffers (void)
return grub_video_adapter_active->swap_buffers ();
}
/* Create new render target. */
grub_err_t
grub_video_create_render_target (struct grub_video_render_target **result,
unsigned int width, unsigned int height,
@ -324,6 +345,7 @@ grub_video_create_render_target (struct grub_video_render_target **result,
mode_type);
}
/* Delete render target. */
grub_err_t
grub_video_delete_render_target (struct grub_video_render_target *target)
{
@ -333,6 +355,7 @@ grub_video_delete_render_target (struct grub_video_render_target *target)
return grub_video_adapter_active->delete_render_target (target);
}
/* Set active render target. */
grub_err_t
grub_video_set_active_render_target (struct grub_video_render_target *target)
{
@ -342,12 +365,14 @@ grub_video_set_active_render_target (struct grub_video_render_target *target)
return grub_video_adapter_active->set_active_render_target (target);
}
/* Initialize Video API module. */
GRUB_MOD_INIT(video_video)
{
grub_video_adapter_active = 0;
grub_video_adapter_list = 0;
}
/* Finalize Video API module. */
GRUB_MOD_FINI(video_video)
{
}