ad2a06edba
* include/grub/bitmap.h: New file. * include/grub/i386/pc/vbeutil.h: Likewise. * video/bitmap.c: Likewise. * video/readers/tga.c: Likewise. * video/i386/pc/vbeutil.c: Likewise. * commands/videotest.c: Code cleanup and updated to reflect to new video API. * term/gfxterm.c: Likewise. * video/video.c: Likewise. * conf/i386-pc.rmk (pkgdata_MODULES): Added tga.mod and bitmap.mod. (vbe_mod_SOURCES): Added video/i386/pc/vbeutil.c. (bitmap_mod_SOURCES): New entry. (bitmap_mod_CFLAGS): Likewise. (bitmap_mod_LDFLAGS): Likewise. (tga_mod_SOURCES): Likewise. (tga_mod_CFLAGS): Likewise. (tga_mod_LDFLAGS): Likewise. * include/grub/video.h (grub_video_blit_operators): New enum type. (grub_video_render_target): Changed as forward declaration and moved actual definition to be video driver specific. (grub_video_adapter.blit_bitmap): Added blitting operator. (grub_video_adapter.blit_render_target): Likewise. (grub_video_blit_bitmap): Likewise. (grub_video_blit_render_target): Likewise. * include/grub/i386/pc/vbe.h (grub_video_render_target): Added driver specific render target definition. (grub_video_vbe_map_rgba): Added driver internal helper. (grub_video_vbe_unmap_color): Updated to use grub_video_i386_vbeblit_info. (grub_video_vbe_get_video_ptr): Likewise. * include/grub/i386/pc/vbeblit.h (grub_video_i386_vbeblit_R8G8B8A8_R8G8B8A8): Updated to use grub_video_i386_vbeblit_info. (grub_video_i386_vbeblit_R8G8B8_R8G8B8A8): Likewise. (grub_video_i386_vbeblit_index_R8G8B8A8): Likewise. (grub_video_i386_vbeblit_R8G8B8A8_R8G8B8): Likewise. (grub_video_i386_vbeblit_R8G8B8_R8G8B8): Likewise. (grub_video_i386_vbeblit_index_R8G8B8): Likewise. (grub_video_i386_vbeblit_index_index): Likewise. (grub_video_i386_vbeblit_R8G8B8X8_R8G8B8X8): New blitter function. (grub_video_i386_vbeblit_R8G8B8_R8G8B8X8): Likewise. (grub_video_i386_vbeblit_index_R8G8B8X8): Likewise. (grub_video_i386_vbeblit_blend): Added generic blitter for blend operator. (grub_video_i386_vbeblit_replace): Added generic blitter for replace operator. * video/i386/pc/vbeblit.c: Updated to reflect changes on include/grub/i386/pc/vbeblit.h. * include/grub/i386/pc/vbefill.h (grub_video_i386_vbefill_R8G8B8A8): Updated to use grub_video_i386_vbeblit_info. (grub_video_i386_vbefill_R8G8B8): Likewise. (grub_video_i386_vbefill_index): Likewise. (grub_video_i386_vbefill): Added generic filler. * video/i386/pc/vbefill.c: Updated to reflect changes on include/grub/i386/pc/vbefill.h. * video/i386/pc/vbe.c (grub_video_vbe_get_video_ptr): Updated to use grub_video_i386_vbeblit_info. (grub_video_vbe_unmap_color): Likewise. (grub_video_vbe_blit_glyph): Likewise. (grub_video_vbe_scroll): Likewise. (grub_video_vbe_draw_pixel): Removed function. (grub_video_vbe_get_pixel): Likewise. (grub_video_vbe_fill_rect): Moved all blitters to vbefill.c and updated code to use it. (common_blitter): Added common blitter for render target and bitmap. (grub_video_vbe_blit_bitmap): Updated to use common_blitter. (grub_video_vbe_blit_render_target): Likewise.
496 lines
13 KiB
C
496 lines
13 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2006 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/bitmap.h>
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#include <grub/types.h>
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#include <grub/normal.h>
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#include <grub/dl.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/arg.h>
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#include <grub/file.h>
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/* Uncomment following define to enable TGA debug. */
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//#define TGA_DEBUG
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#if defined(TGA_DEBUG)
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#define dump_int_field(x) grub_printf( #x " = %d (0x%04x)\n", x, x);
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#endif
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enum
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{
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GRUB_TGA_IMAGE_TYPE_NONE = 0,
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GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_INDEXCOLOR = 1,
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GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR = 2,
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GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_BLACK_AND_WHITE = 3,
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GRUB_TGA_IMAGE_TYPE_RLE_INDEXCOLOR = 9,
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GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR = 10,
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GRUB_TGA_IMAGE_TYPE_RLE_BLACK_AND_WHITE = 11,
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};
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enum
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{
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GRUB_TGA_COLOR_MAP_TYPE_NONE = 0,
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GRUB_TGA_COLOR_MAP_TYPE_INCLUDED = 1
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};
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enum
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{
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GRUB_TGA_IMAGE_ORIGIN_RIGHT = 0x10,
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GRUB_TGA_IMAGE_ORIGIN_TOP = 0x20
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};
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struct grub_tga_header
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{
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grub_uint8_t id_length;
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grub_uint8_t color_map_type;
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grub_uint8_t image_type;
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/* Color Map Specification. */
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grub_uint16_t color_map_first_index;
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grub_uint16_t color_map_length;
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grub_uint8_t color_map_bpp;
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/* Image Specification. */
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grub_uint16_t image_x_origin;
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grub_uint16_t image_y_origin;
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grub_uint16_t image_width;
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grub_uint16_t image_height;
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grub_uint8_t image_bpp;
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grub_uint8_t image_descriptor;
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} __attribute__ ((packed));
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static grub_err_t
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tga_load_truecolor_rle_R8G8B8 (struct grub_video_bitmap *bitmap,
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struct grub_tga_header *header,
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grub_file_t file)
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{
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unsigned int x;
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unsigned int y;
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grub_uint8_t type;
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grub_uint8_t *ptr;
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grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
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grub_uint8_t bytes_per_pixel;
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bytes_per_pixel = header->image_bpp / 8;
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for (y = 0; y < header->image_height; y++)
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{
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ptr = bitmap->data;
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if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
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ptr += y * bitmap->mode_info.pitch;
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else
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ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
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for (x = 0; x < header->image_width;)
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{
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if (grub_file_read (file, (char *)&type, sizeof (type)) != sizeof(type))
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return grub_errno;
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if (type & 0x80)
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{
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/* RLE-encoded packet. */
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type &= 0x7f;
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type++;
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if (grub_file_read (file, (char *)&tmp[0], bytes_per_pixel)
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!= bytes_per_pixel)
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return grub_errno;
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while (type)
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{
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if (x < header->image_width)
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{
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ptr[0] = tmp[2];
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ptr[1] = tmp[1];
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ptr[2] = tmp[0];
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ptr += 3;
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}
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type--;
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x++;
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}
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}
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else
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{
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/* RAW-encoded packet. */
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type++;
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while (type)
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{
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if (grub_file_read (file, (char *)&tmp[0], bytes_per_pixel)
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!= bytes_per_pixel)
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return grub_errno;
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if (x < header->image_width)
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{
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ptr[0] = tmp[2];
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ptr[1] = tmp[1];
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ptr[2] = tmp[0];
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ptr += 3;
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}
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type--;
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x++;
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}
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}
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}
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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tga_load_truecolor_rle_R8G8B8A8 (struct grub_video_bitmap *bitmap,
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struct grub_tga_header *header,
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grub_file_t file)
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{
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unsigned int x;
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unsigned int y;
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grub_uint8_t type;
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grub_uint8_t *ptr;
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grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
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grub_uint8_t bytes_per_pixel;
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bytes_per_pixel = header->image_bpp / 8;
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for (y = 0; y < header->image_height; y++)
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{
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ptr = bitmap->data;
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if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
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ptr += y * bitmap->mode_info.pitch;
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else
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ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
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for (x = 0; x < header->image_width;)
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{
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if (grub_file_read (file, (char *)&type, sizeof (type)) != sizeof(type))
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return grub_errno;
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if (type & 0x80)
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{
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/* RLE-encoded packet. */
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type &= 0x7f;
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type++;
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if (grub_file_read (file, (char *)&tmp[0], bytes_per_pixel)
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!= bytes_per_pixel)
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return grub_errno;
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while (type)
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{
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if (x < header->image_width)
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{
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ptr[0] = tmp[2];
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ptr[1] = tmp[1];
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ptr[2] = tmp[0];
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ptr[3] = tmp[3];
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ptr += 4;
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}
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type--;
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x++;
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}
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}
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else
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{
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/* RAW-encoded packet. */
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type++;
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while (type)
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{
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if (grub_file_read (file, (char *)&tmp[0], bytes_per_pixel)
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!= bytes_per_pixel)
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return grub_errno;
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if (x < header->image_width)
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{
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ptr[0] = tmp[2];
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ptr[1] = tmp[1];
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ptr[2] = tmp[0];
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ptr[3] = tmp[3];
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ptr += 4;
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}
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type--;
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x++;
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}
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}
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}
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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tga_load_truecolor_R8G8B8 (struct grub_video_bitmap *bitmap,
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struct grub_tga_header *header,
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grub_file_t file)
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{
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unsigned int x;
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unsigned int y;
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grub_uint8_t *ptr;
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grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
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grub_uint8_t bytes_per_pixel;
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bytes_per_pixel = header->image_bpp / 8;
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for (y = 0; y < header->image_height; y++)
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{
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ptr = bitmap->data;
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if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
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ptr += y * bitmap->mode_info.pitch;
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else
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ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
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for (x = 0; x < header->image_width; x++)
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{
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if (grub_file_read (file, (char *)&tmp[0], bytes_per_pixel)
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!= bytes_per_pixel)
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return grub_errno;
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ptr[0] = tmp[2];
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ptr[1] = tmp[1];
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ptr[2] = tmp[0];
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ptr += 3;
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}
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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tga_load_truecolor_R8G8B8A8 (struct grub_video_bitmap *bitmap,
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struct grub_tga_header *header,
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grub_file_t file)
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{
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unsigned int x;
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unsigned int y;
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grub_uint8_t *ptr;
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grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
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grub_uint8_t bytes_per_pixel;
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bytes_per_pixel = header->image_bpp / 8;
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for (y = 0; y < header->image_height; y++)
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{
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ptr = bitmap->data;
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if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
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ptr += y * bitmap->mode_info.pitch;
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else
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ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
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for (x = 0; x < header->image_width; x++)
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{
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if (grub_file_read (file, (char *)&tmp[0], bytes_per_pixel)
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!= bytes_per_pixel)
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return grub_errno;
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ptr[0] = tmp[2];
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ptr[1] = tmp[1];
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ptr[2] = tmp[0];
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ptr[3] = tmp[3];
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ptr += 4;
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}
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_video_reader_tga (struct grub_video_bitmap **bitmap,
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const char *filename)
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{
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grub_file_t file;
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grub_ssize_t pos;
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struct grub_tga_header header;
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int has_alpha;
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file = grub_file_open (filename);
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if (! file)
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return grub_errno;
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/* TGA Specification states that we SHOULD start by reading
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ID from end of file, but we really don't care about that as we are
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not going to support developer area & extensions at this point. */
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/* Read TGA header from begining of file. */
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if (grub_file_read (file, (char*)&header, sizeof (header))
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!= sizeof (header))
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{
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grub_file_close (file);
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return grub_errno;
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}
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/* Skip ID field. */
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pos = grub_file_tell (file);
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pos += header.id_length;
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grub_file_seek (file, pos);
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if (grub_errno != GRUB_ERR_NONE)
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{
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grub_file_close (file);
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return grub_errno;
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}
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#if defined(TGA_DEBUG)
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grub_printf("tga: header\n");
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dump_int_field(header.id_length);
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dump_int_field(header.color_map_type);
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dump_int_field(header.image_type);
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dump_int_field(header.color_map_first_index);
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dump_int_field(header.color_map_length);
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dump_int_field(header.color_map_bpp);
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dump_int_field(header.image_x_origin);
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dump_int_field(header.image_y_origin);
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dump_int_field(header.image_width);
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dump_int_field(header.image_height);
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dump_int_field(header.image_bpp);
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dump_int_field(header.image_descriptor);
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#endif
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/* Check that bitmap encoding is supported. */
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switch (header.image_type)
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{
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case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
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case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
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break;
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default:
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grub_file_close (file);
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return grub_error (GRUB_ERR_BAD_FILE_TYPE,
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"Unsupported bitmap format (unknown encoding).");
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}
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/* Check that bitmap depth is supported. */
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switch (header.image_bpp)
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{
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case 24:
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has_alpha = 0;
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break;
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case 32:
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has_alpha = 1;
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break;
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default:
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grub_file_close (file);
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return grub_error (GRUB_ERR_BAD_FILE_TYPE,
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"Unsupported bitmap format (bpp=%d).",
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header.image_bpp);
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}
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/* Allocate bitmap. If there is alpha information store it too. */
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if (has_alpha)
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{
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grub_video_bitmap_create (bitmap, header.image_width,
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header.image_height,
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GRUB_VIDEO_BLIT_FORMAT_R8G8B8A8);
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if (grub_errno != GRUB_ERR_NONE)
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{
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grub_file_close (file);
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return grub_errno;
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}
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/* Load bitmap data. */
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switch (header.image_type)
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{
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case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
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tga_load_truecolor_R8G8B8A8 (*bitmap, &header, file);
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break;
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case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
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tga_load_truecolor_rle_R8G8B8A8 (*bitmap, &header, file);
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break;
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}
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}
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else
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{
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grub_video_bitmap_create (bitmap, header.image_width,
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header.image_height,
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GRUB_VIDEO_BLIT_FORMAT_R8G8B8);
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if (grub_errno != GRUB_ERR_NONE)
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{
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grub_file_close (file);
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return grub_errno;
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}
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/* Load bitmap data. */
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switch (header.image_type)
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{
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case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
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tga_load_truecolor_R8G8B8 (*bitmap, &header, file);
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break;
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case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
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tga_load_truecolor_rle_R8G8B8 (*bitmap, &header, file);
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break;
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}
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}
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/* If there were loading proble, destroy bitmap. */
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if (grub_errno != GRUB_ERR_NONE)
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{
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grub_video_bitmap_destroy (*bitmap);
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*bitmap = 0;
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}
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grub_file_close (file);
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return grub_errno;
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}
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#if defined(TGA_DEBUG)
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static grub_err_t
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grub_cmd_tgatest (struct grub_arg_list *state __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;
|
|
}
|
|
#endif
|
|
|
|
static struct grub_video_bitmap_reader tga_reader = {
|
|
.extension = ".tga",
|
|
.reader = grub_video_reader_tga,
|
|
.next = 0
|
|
};
|
|
|
|
GRUB_MOD_INIT(video_reader_tga)
|
|
{
|
|
grub_video_bitmap_reader_register (&tga_reader);
|
|
#if defined(TGA_DEBUG)
|
|
grub_register_command ("tgatest", grub_cmd_tgatest, GRUB_COMMAND_FLAG_BOTH,
|
|
"tgatest FILE", "Tests loading of TGA bitmap.", 0);
|
|
#endif
|
|
}
|
|
|
|
GRUB_MOD_FINI(video_reader_tga)
|
|
{
|
|
#if defined(TGA_DEBUG)
|
|
grub_unregister_command ("tgatest");
|
|
#endif
|
|
grub_video_bitmap_reader_unregister (&tga_reader);
|
|
}
|