diff options
Diffstat (limited to 'grub-core/video/video.c')
| -rw-r--r-- | grub-core/video/video.c | 763 |
1 files changed, 763 insertions, 0 deletions
diff --git a/grub-core/video/video.c b/grub-core/video/video.c new file mode 100644 index 0000000..9834241 --- /dev/null +++ b/grub-core/video/video.c @@ -0,0 +1,763 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2006,2007,2008,2009 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/types.h> +#include <grub/dl.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/i18n.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +/* The list of video adapters registered to system. */ +grub_video_adapter_t grub_video_adapter_list = NULL; + +/* Active video adapter. */ +grub_video_adapter_t grub_video_adapter_active; + +/* Restore back to initial mode (where applicable). */ +grub_err_t +grub_video_restore (void) +{ + if (grub_video_adapter_active) + { + 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"); + + /* If mode_info is NULL just report that video adapter is active. */ + if (! mode_info) + { + grub_errno = GRUB_ERR_NONE; + return grub_errno; + } + + return grub_video_adapter_active->get_info (mode_info); +} + +grub_video_driver_id_t +grub_video_get_driver_id (void) +{ + if (! grub_video_adapter_active) + return GRUB_VIDEO_DRIVER_NONE; + return grub_video_adapter_active->id; +} + +/* Get information about active video mode. */ +grub_err_t +grub_video_get_info_and_fini (struct grub_video_mode_info *mode_info, + void **framebuffer) +{ + grub_err_t err; + + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + err = grub_video_adapter_active->get_info_and_fini (mode_info, framebuffer); + if (err) + return err; + + grub_video_adapter_active = 0; + return GRUB_ERR_NONE; +} + +/* 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) +{ + /* Check if we have any known 32 bit modes. */ + if (mode_info->bpp == 32) + { + if ((mode_info->red_mask_size == 8) + && (mode_info->red_field_pos == 16) + && (mode_info->green_mask_size == 8) + && (mode_info->green_field_pos == 8) + && (mode_info->blue_mask_size == 8) + && (mode_info->blue_field_pos == 0)) + { + return GRUB_VIDEO_BLIT_FORMAT_BGRA_8888; + } + else if ((mode_info->red_mask_size == 8) + && (mode_info->red_field_pos == 0) + && (mode_info->green_mask_size == 8) + && (mode_info->green_field_pos == 8) + && (mode_info->blue_mask_size == 8) + && (mode_info->blue_field_pos == 16)) + { + return GRUB_VIDEO_BLIT_FORMAT_RGBA_8888; + } + } + /* Check if we have any known 24 bit modes. */ + else if (mode_info->bpp == 24) + { + if ((mode_info->red_mask_size == 8) + && (mode_info->red_field_pos == 16) + && (mode_info->green_mask_size == 8) + && (mode_info->green_field_pos == 8) + && (mode_info->blue_mask_size == 8) + && (mode_info->blue_field_pos == 0)) + { + return GRUB_VIDEO_BLIT_FORMAT_BGR_888; + } + else if ((mode_info->red_mask_size == 8) + && (mode_info->red_field_pos == 0) + && (mode_info->green_mask_size == 8) + && (mode_info->green_field_pos == 8) + && (mode_info->blue_mask_size == 8) + && (mode_info->blue_field_pos == 16)) + { + return GRUB_VIDEO_BLIT_FORMAT_RGB_888; + } + } + /* Check if we have any known 16 bit modes. */ + else if (mode_info->bpp == 16) + { + if ((mode_info->red_mask_size == 5) + && (mode_info->red_field_pos == 11) + && (mode_info->green_mask_size == 6) + && (mode_info->green_field_pos == 5) + && (mode_info->blue_mask_size == 5) + && (mode_info->blue_field_pos == 0)) + { + return GRUB_VIDEO_BLIT_FORMAT_BGR_565; + } + else if ((mode_info->red_mask_size == 5) + && (mode_info->red_field_pos == 0) + && (mode_info->green_mask_size == 6) + && (mode_info->green_field_pos == 5) + && (mode_info->blue_mask_size == 5) + && (mode_info->blue_field_pos == 11)) + { + return GRUB_VIDEO_BLIT_FORMAT_RGB_565; + } + } + else if (mode_info->bpp == 1) + return GRUB_VIDEO_BLIT_FORMAT_1BIT_PACKED; + + /* Backup route. Unknown format. */ + + /* If there are more than 8 bits per color, assume RGB(A) mode. */ + if (mode_info->bpp > 8) + { + if (mode_info->reserved_mask_size > 0) + { + return GRUB_VIDEO_BLIT_FORMAT_RGBA; + } + else + { + return GRUB_VIDEO_BLIT_FORMAT_RGB; + } + } + + /* Assume as indexcolor mode. */ + 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) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + 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) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->get_viewport (x, y, width, height); +} + +/* Set region dimensions. */ +grub_err_t +grub_video_set_region (unsigned int x, unsigned int y, + unsigned int width, unsigned int height) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->set_region (x, y, width, height); +} + +/* Get region dimensions. */ +grub_err_t +grub_video_get_region (unsigned int *x, unsigned int *y, + unsigned int *width, unsigned int *height) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->get_region (x, y, width, height); +} + +/* Set status of the intersection of the viewport and the region. */ +grub_err_t +grub_video_set_area_status (grub_video_area_status_t area_status) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->set_area_status (area_status); +} + +/* Get status of the intersection of the viewport and the region. */ +grub_err_t +grub_video_get_area_status (grub_video_area_status_t *area_status) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->get_area_status (area_status); +} + +/* Map color name to adapter specific color. */ +grub_video_color_t +grub_video_map_color (grub_uint32_t color_name) +{ + if (! grub_video_adapter_active) + return 0; + + 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) +{ + if (! grub_video_adapter_active) + return 0; + + 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) +{ + if (! grub_video_adapter_active) + return 0; + + return grub_video_adapter_active->map_rgba (red, green, blue, alpha); +} + +/* Unmap video color back to RGBA components. */ +grub_err_t +grub_video_unmap_color (grub_video_color_t color, grub_uint8_t *red, + grub_uint8_t *green, grub_uint8_t *blue, + grub_uint8_t *alpha) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->unmap_color (color, + 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) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->fill_rect (color, x, y, width, height); +} + +/* Blit bitmap to screen. */ +grub_err_t +grub_video_blit_bitmap (struct grub_video_bitmap *bitmap, + enum grub_video_blit_operators oper, + int x, int y, int offset_x, int offset_y, + unsigned int width, unsigned int height) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->blit_bitmap (bitmap, oper, x, y, + offset_x, offset_y, + width, height); +} + +/* Blit render target to active render target. */ +grub_err_t +grub_video_blit_render_target (struct grub_video_render_target *target, + enum grub_video_blit_operators oper, + int x, int y, int offset_x, int offset_y, + unsigned int width, unsigned int height) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->blit_render_target (target, oper, x, y, + offset_x, offset_y, + 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) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->scroll (color, dx, dy); +} + +/* Swap buffers (swap active render target). */ +grub_err_t +grub_video_swap_buffers (void) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + 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, + unsigned int mode_type) +{ + *result = 0; + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->create_render_target (result, + width, height, + mode_type); +} + +/* Delete render target. */ +grub_err_t +grub_video_delete_render_target (struct grub_video_render_target *target) +{ + if (!target) + return GRUB_ERR_NONE; + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + 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) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->set_active_render_target (target); +} + +/* Get active render target. */ +grub_err_t +grub_video_get_active_render_target (struct grub_video_render_target **target) +{ + if (! grub_video_adapter_active) + return grub_error (GRUB_ERR_BAD_DEVICE, "no video mode activated"); + + return grub_video_adapter_active->get_active_render_target (target); +} + +grub_err_t +grub_video_edid_checksum (struct grub_video_edid_info *edid_info) +{ + const char *edid_bytes = (const char *) edid_info; + int i; + char checksum = 0; + + /* Check EDID checksum. */ + for (i = 0; i < 128; ++i) + checksum += edid_bytes[i]; + + if (checksum != 0) + return grub_error (GRUB_ERR_BAD_DEVICE, + "invalid EDID checksum %d", checksum); + + grub_errno = GRUB_ERR_NONE; + return grub_errno; +} + +grub_err_t +grub_video_edid_preferred_mode (struct grub_video_edid_info *edid_info, + unsigned int *width, unsigned int *height) +{ + /* Bit 1 in the Feature Support field indicates that the first + Detailed Timing Description is the preferred timing mode. */ + if (edid_info->version == 1 /* we don't understand later versions */ + && (edid_info->feature_support + & GRUB_VIDEO_EDID_FEATURE_PREFERRED_TIMING_MODE) + && edid_info->detailed_timings[0].pixel_clock) + { + *width = edid_info->detailed_timings[0].horizontal_active_lo + | (((unsigned int) + (edid_info->detailed_timings[0].horizontal_hi & 0xf0)) + << 4); + *height = edid_info->detailed_timings[0].vertical_active_lo + | (((unsigned int) + (edid_info->detailed_timings[0].vertical_hi & 0xf0)) + << 4); + if (*width && *height) + return GRUB_ERR_NONE; + } + + return grub_error (GRUB_ERR_BAD_DEVICE, "no preferred mode available"); +} + +/* Parse <width>x<height>[x<depth>]*/ +static grub_err_t +parse_modespec (const char *current_mode, int *width, int *height, int *depth) +{ + const char *value; + const char *param = current_mode; + + *width = *height = *depth = -1; + + if (grub_strcmp (param, "auto") == 0) + { + *width = *height = 0; + return GRUB_ERR_NONE; + } + + /* Find width value. */ + value = param; + param = grub_strchr(param, 'x'); + if (param == NULL) + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("invalid video mode specification `%s'"), + current_mode); + + param++; + + *width = grub_strtoul (value, 0, 0); + if (grub_errno != GRUB_ERR_NONE) + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("invalid video mode specification `%s'"), + current_mode); + + /* Find height value. */ + value = param; + param = grub_strchr(param, 'x'); + if (param == NULL) + { + *height = grub_strtoul (value, 0, 0); + if (grub_errno != GRUB_ERR_NONE) + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("invalid video mode specification `%s'"), + current_mode); + } + else + { + /* We have optional color depth value. */ + param++; + + *height = grub_strtoul (value, 0, 0); + if (grub_errno != GRUB_ERR_NONE) + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("invalid video mode specification `%s'"), + current_mode); + + /* Convert color depth value. */ + value = param; + *depth = grub_strtoul (value, 0, 0); + if (grub_errno != GRUB_ERR_NONE) + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("invalid video mode specification `%s'"), + current_mode); + } + return GRUB_ERR_NONE; +} + +grub_err_t +grub_video_set_mode (const char *modestring, + unsigned int modemask, + unsigned int modevalue) +{ + char *tmp; + char *next_mode; + char *current_mode; + char *modevar; + + if (grub_video_adapter_active && grub_video_adapter_active->id == GRUB_VIDEO_ADAPTER_CAPTURE) + return GRUB_ERR_NONE; + + modevalue &= modemask; + + /* Take copy of env.var. as we don't want to modify that. */ + modevar = grub_strdup (modestring); + + /* Initialize next mode. */ + next_mode = modevar; + + if (! modevar) + return grub_errno; + + if (grub_memcmp (next_mode, "keep", sizeof ("keep")) == 0 + || grub_memcmp (next_mode, "keep,", sizeof ("keep,") - 1) == 0 + || grub_memcmp (next_mode, "keep;", sizeof ("keep;") - 1) == 0) + { + int suitable = 1; + grub_err_t err; + + if (grub_video_adapter_active) + { + struct grub_video_mode_info mode_info; + grub_memset (&mode_info, 0, sizeof (mode_info)); + err = grub_video_get_info (&mode_info); + if (err) + { + suitable = 0; + grub_errno = GRUB_ERR_NONE; + } + if ((mode_info.mode_type & modemask) != modevalue) + suitable = 0; + } + else if (((GRUB_VIDEO_MODE_TYPE_PURE_TEXT & modemask) != 0) + && ((GRUB_VIDEO_MODE_TYPE_PURE_TEXT & modevalue) == 0)) + suitable = 0; + + if (suitable) + { + grub_free (modevar); + return GRUB_ERR_NONE; + } + next_mode += sizeof ("keep") - 1; + if (! *next_mode) + { + grub_free (modevar); + + /* TRANSLATORS: This doesn't imply that there is no available video + mode at all. All modes may have been filtered out by some criteria. + */ + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("no suitable video mode found")); + } + + /* Skip separator. */ + next_mode++; + } + + /* De-activate last set video adapter. */ + if (grub_video_adapter_active) + { + /* Finalize adapter. */ + grub_video_adapter_active->fini (); + if (grub_errno != GRUB_ERR_NONE) + grub_errno = GRUB_ERR_NONE; + + /* Mark active adapter as not set. */ + grub_video_adapter_active = 0; + } + + /* Loop until all modes has been tested out. */ + while (next_mode != NULL) + { + int width = -1; + int height = -1; + int depth = -1; + grub_err_t err; + unsigned int flags = modevalue; + unsigned int flagmask = modemask; + + /* Use last next_mode as current mode. */ + tmp = next_mode; + + /* Save position of next mode and separate modes. */ + for (; *next_mode; next_mode++) + if (*next_mode == ',' || *next_mode == ';') + break; + if (*next_mode) + { + *next_mode = 0; + next_mode++; + } + else + next_mode = 0; + + /* Skip whitespace. */ + while (grub_isspace (*tmp)) + tmp++; + + /* Initialize token holders. */ + current_mode = tmp; + + /* XXX: we assume that we're in pure text mode if + no video mode is initialized. Is it always true? */ + if (grub_strcmp (current_mode, "text") == 0) + { + struct grub_video_mode_info mode_info; + + grub_memset (&mode_info, 0, sizeof (mode_info)); + if (((GRUB_VIDEO_MODE_TYPE_PURE_TEXT & modemask) == 0) + || ((GRUB_VIDEO_MODE_TYPE_PURE_TEXT & modevalue) != 0)) + { + /* Valid mode found from adapter, and it has been activated. + Specify it as active adapter. */ + grub_video_adapter_active = NULL; + + /* Free memory. */ + grub_free (modevar); + + return GRUB_ERR_NONE; + } + else + continue; + } + + err = parse_modespec (current_mode, &width, &height, &depth); + if (err) + { + /* Free memory before returning. */ + grub_free (modevar); + + return err; + } + + /* Try out video mode. */ + + /* If user requested specific depth check if this depth is supported. */ + if (depth != -1 && (flagmask & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK) + && + (((flags & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK) + != ((depth << GRUB_VIDEO_MODE_TYPE_DEPTH_POS) + & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK)))) + continue; + + if (depth != -1) + { + flags |= (depth << GRUB_VIDEO_MODE_TYPE_DEPTH_POS) + & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK; + flagmask |= GRUB_VIDEO_MODE_TYPE_DEPTH_MASK; + } + + /* Try to initialize requested mode. Ignore any errors. */ + grub_video_adapter_t p; + + /* Loop thru all possible video adapter trying to find requested mode. */ + for (p = grub_video_adapter_list; p; p = p->next) + { + struct grub_video_mode_info mode_info; + + grub_memset (&mode_info, 0, sizeof (mode_info)); + + /* Try to initialize adapter, if it fails, skip to next adapter. */ + err = p->init (); + if (err != GRUB_ERR_NONE) + { + grub_errno = GRUB_ERR_NONE; + continue; + } + + /* Try to initialize video mode. */ + err = p->setup (width, height, flags, flagmask); + if (err != GRUB_ERR_NONE) + { + p->fini (); + grub_errno = GRUB_ERR_NONE; + continue; + } + + err = p->get_info (&mode_info); + if (err != GRUB_ERR_NONE) + { + p->fini (); + grub_errno = GRUB_ERR_NONE; + continue; + } + + flags = mode_info.mode_type & ~GRUB_VIDEO_MODE_TYPE_DEPTH_MASK; + flags |= (mode_info.bpp << GRUB_VIDEO_MODE_TYPE_DEPTH_POS) + & GRUB_VIDEO_MODE_TYPE_DEPTH_MASK; + + /* Check that mode is suitable for upper layer. */ + if ((flags & GRUB_VIDEO_MODE_TYPE_PURE_TEXT) + ? (((GRUB_VIDEO_MODE_TYPE_PURE_TEXT & modemask) != 0) + && ((GRUB_VIDEO_MODE_TYPE_PURE_TEXT & modevalue) == 0)) + : ((flags & modemask) != modevalue)) + { + p->fini (); + grub_errno = GRUB_ERR_NONE; + continue; + } + + /* Valid mode found from adapter, and it has been activated. + Specify it as active adapter. */ + grub_video_adapter_active = p; + + /* Free memory. */ + grub_free (modevar); + + return GRUB_ERR_NONE; + } + + } + + /* Free memory. */ + grub_free (modevar); + + return grub_error (GRUB_ERR_BAD_ARGUMENT, + N_("no suitable video mode found")); +} |