automake commit without merge history
This commit is contained in:
parent
265d68cd10
commit
8c41176882
810 changed files with 4980 additions and 2508 deletions
495
grub-core/video/readers/tga.c
Normal file
495
grub-core/video/readers/tga.c
Normal file
|
@ -0,0 +1,495 @@
|
|||
/*
|
||||
* GRUB -- GRand Unified Bootloader
|
||||
* Copyright (C) 2006,2007 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/bitmap.h>
|
||||
#include <grub/types.h>
|
||||
#include <grub/normal.h>
|
||||
#include <grub/dl.h>
|
||||
#include <grub/mm.h>
|
||||
#include <grub/misc.h>
|
||||
#include <grub/bufio.h>
|
||||
|
||||
/* Uncomment following define to enable TGA debug. */
|
||||
//#define TGA_DEBUG
|
||||
|
||||
#if defined(TGA_DEBUG)
|
||||
#define dump_int_field(x) grub_printf( #x " = %d (0x%04x)\n", x, x);
|
||||
static grub_command_t cmd;
|
||||
#endif
|
||||
|
||||
enum
|
||||
{
|
||||
GRUB_TGA_IMAGE_TYPE_NONE = 0,
|
||||
GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_INDEXCOLOR = 1,
|
||||
GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR = 2,
|
||||
GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_BLACK_AND_WHITE = 3,
|
||||
GRUB_TGA_IMAGE_TYPE_RLE_INDEXCOLOR = 9,
|
||||
GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR = 10,
|
||||
GRUB_TGA_IMAGE_TYPE_RLE_BLACK_AND_WHITE = 11,
|
||||
};
|
||||
|
||||
enum
|
||||
{
|
||||
GRUB_TGA_COLOR_MAP_TYPE_NONE = 0,
|
||||
GRUB_TGA_COLOR_MAP_TYPE_INCLUDED = 1
|
||||
};
|
||||
|
||||
enum
|
||||
{
|
||||
GRUB_TGA_IMAGE_ORIGIN_RIGHT = 0x10,
|
||||
GRUB_TGA_IMAGE_ORIGIN_TOP = 0x20
|
||||
};
|
||||
|
||||
struct grub_tga_header
|
||||
{
|
||||
grub_uint8_t id_length;
|
||||
grub_uint8_t color_map_type;
|
||||
grub_uint8_t image_type;
|
||||
|
||||
/* Color Map Specification. */
|
||||
grub_uint16_t color_map_first_index;
|
||||
grub_uint16_t color_map_length;
|
||||
grub_uint8_t color_map_bpp;
|
||||
|
||||
/* Image Specification. */
|
||||
grub_uint16_t image_x_origin;
|
||||
grub_uint16_t image_y_origin;
|
||||
grub_uint16_t image_width;
|
||||
grub_uint16_t image_height;
|
||||
grub_uint8_t image_bpp;
|
||||
grub_uint8_t image_descriptor;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
static grub_err_t
|
||||
tga_load_truecolor_rle_R8G8B8 (struct grub_video_bitmap *bitmap,
|
||||
struct grub_tga_header *header,
|
||||
grub_file_t file)
|
||||
{
|
||||
unsigned int x;
|
||||
unsigned int y;
|
||||
grub_uint8_t type;
|
||||
grub_uint8_t *ptr;
|
||||
grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
|
||||
grub_uint8_t bytes_per_pixel;
|
||||
|
||||
bytes_per_pixel = header->image_bpp / 8;
|
||||
|
||||
for (y = 0; y < header->image_height; y++)
|
||||
{
|
||||
ptr = bitmap->data;
|
||||
if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
|
||||
ptr += y * bitmap->mode_info.pitch;
|
||||
else
|
||||
ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
|
||||
|
||||
for (x = 0; x < header->image_width;)
|
||||
{
|
||||
if (grub_file_read (file, &type, sizeof (type)) != sizeof(type))
|
||||
return grub_errno;
|
||||
|
||||
if (type & 0x80)
|
||||
{
|
||||
/* RLE-encoded packet. */
|
||||
type &= 0x7f;
|
||||
type++;
|
||||
|
||||
if (grub_file_read (file, &tmp[0], bytes_per_pixel)
|
||||
!= bytes_per_pixel)
|
||||
return grub_errno;
|
||||
|
||||
while (type)
|
||||
{
|
||||
if (x < header->image_width)
|
||||
{
|
||||
ptr[0] = tmp[2];
|
||||
ptr[1] = tmp[1];
|
||||
ptr[2] = tmp[0];
|
||||
ptr += 3;
|
||||
}
|
||||
|
||||
type--;
|
||||
x++;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* RAW-encoded packet. */
|
||||
type++;
|
||||
|
||||
while (type)
|
||||
{
|
||||
if (grub_file_read (file, &tmp[0], bytes_per_pixel)
|
||||
!= bytes_per_pixel)
|
||||
return grub_errno;
|
||||
|
||||
if (x < header->image_width)
|
||||
{
|
||||
ptr[0] = tmp[2];
|
||||
ptr[1] = tmp[1];
|
||||
ptr[2] = tmp[0];
|
||||
ptr += 3;
|
||||
}
|
||||
|
||||
type--;
|
||||
x++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
tga_load_truecolor_rle_R8G8B8A8 (struct grub_video_bitmap *bitmap,
|
||||
struct grub_tga_header *header,
|
||||
grub_file_t file)
|
||||
{
|
||||
unsigned int x;
|
||||
unsigned int y;
|
||||
grub_uint8_t type;
|
||||
grub_uint8_t *ptr;
|
||||
grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
|
||||
grub_uint8_t bytes_per_pixel;
|
||||
|
||||
bytes_per_pixel = header->image_bpp / 8;
|
||||
|
||||
for (y = 0; y < header->image_height; y++)
|
||||
{
|
||||
ptr = bitmap->data;
|
||||
if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
|
||||
ptr += y * bitmap->mode_info.pitch;
|
||||
else
|
||||
ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
|
||||
|
||||
for (x = 0; x < header->image_width;)
|
||||
{
|
||||
if (grub_file_read (file, &type, sizeof (type)) != sizeof(type))
|
||||
return grub_errno;
|
||||
|
||||
if (type & 0x80)
|
||||
{
|
||||
/* RLE-encoded packet. */
|
||||
type &= 0x7f;
|
||||
type++;
|
||||
|
||||
if (grub_file_read (file, &tmp[0], bytes_per_pixel)
|
||||
!= bytes_per_pixel)
|
||||
return grub_errno;
|
||||
|
||||
while (type)
|
||||
{
|
||||
if (x < header->image_width)
|
||||
{
|
||||
ptr[0] = tmp[2];
|
||||
ptr[1] = tmp[1];
|
||||
ptr[2] = tmp[0];
|
||||
ptr[3] = tmp[3];
|
||||
ptr += 4;
|
||||
}
|
||||
|
||||
type--;
|
||||
x++;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* RAW-encoded packet. */
|
||||
type++;
|
||||
|
||||
while (type)
|
||||
{
|
||||
if (grub_file_read (file, &tmp[0], bytes_per_pixel)
|
||||
!= bytes_per_pixel)
|
||||
return grub_errno;
|
||||
|
||||
if (x < header->image_width)
|
||||
{
|
||||
ptr[0] = tmp[2];
|
||||
ptr[1] = tmp[1];
|
||||
ptr[2] = tmp[0];
|
||||
ptr[3] = tmp[3];
|
||||
ptr += 4;
|
||||
}
|
||||
|
||||
type--;
|
||||
x++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
tga_load_truecolor_R8G8B8 (struct grub_video_bitmap *bitmap,
|
||||
struct grub_tga_header *header,
|
||||
grub_file_t file)
|
||||
{
|
||||
unsigned int x;
|
||||
unsigned int y;
|
||||
grub_uint8_t *ptr;
|
||||
grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
|
||||
grub_uint8_t bytes_per_pixel;
|
||||
|
||||
bytes_per_pixel = header->image_bpp / 8;
|
||||
|
||||
for (y = 0; y < header->image_height; y++)
|
||||
{
|
||||
ptr = bitmap->data;
|
||||
if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
|
||||
ptr += y * bitmap->mode_info.pitch;
|
||||
else
|
||||
ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
|
||||
|
||||
for (x = 0; x < header->image_width; x++)
|
||||
{
|
||||
if (grub_file_read (file, &tmp[0], bytes_per_pixel)
|
||||
!= bytes_per_pixel)
|
||||
return grub_errno;
|
||||
|
||||
ptr[0] = tmp[2];
|
||||
ptr[1] = tmp[1];
|
||||
ptr[2] = tmp[0];
|
||||
|
||||
ptr += 3;
|
||||
}
|
||||
}
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
static grub_err_t
|
||||
tga_load_truecolor_R8G8B8A8 (struct grub_video_bitmap *bitmap,
|
||||
struct grub_tga_header *header,
|
||||
grub_file_t file)
|
||||
{
|
||||
unsigned int x;
|
||||
unsigned int y;
|
||||
grub_uint8_t *ptr;
|
||||
grub_uint8_t tmp[4]; /* Size should be max_bpp / 8. */
|
||||
grub_uint8_t bytes_per_pixel;
|
||||
|
||||
bytes_per_pixel = header->image_bpp / 8;
|
||||
|
||||
for (y = 0; y < header->image_height; y++)
|
||||
{
|
||||
ptr = bitmap->data;
|
||||
if ((header->image_descriptor & GRUB_TGA_IMAGE_ORIGIN_TOP) != 0)
|
||||
ptr += y * bitmap->mode_info.pitch;
|
||||
else
|
||||
ptr += (header->image_height - 1 - y) * bitmap->mode_info.pitch;
|
||||
|
||||
for (x = 0; x < header->image_width; x++)
|
||||
{
|
||||
if (grub_file_read (file, &tmp[0], bytes_per_pixel)
|
||||
!= bytes_per_pixel)
|
||||
return grub_errno;
|
||||
|
||||
ptr[0] = tmp[2];
|
||||
ptr[1] = tmp[1];
|
||||
ptr[2] = tmp[0];
|
||||
ptr[3] = tmp[3];
|
||||
|
||||
ptr += 4;
|
||||
}
|
||||
}
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
|
||||
#if defined(TGA_DEBUG)
|
||||
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;
|
||||
}
|
||||
#endif
|
||||
|
||||
static struct grub_video_bitmap_reader tga_reader = {
|
||||
.extension = ".tga",
|
||||
.reader = grub_video_reader_tga,
|
||||
.next = 0
|
||||
};
|
||||
|
||||
GRUB_MOD_INIT(tga)
|
||||
{
|
||||
grub_video_bitmap_reader_register (&tga_reader);
|
||||
#if defined(TGA_DEBUG)
|
||||
cmd = grub_register_command ("tgatest", grub_cmd_tgatest,
|
||||
"FILE", "Tests loading of TGA bitmap.");
|
||||
#endif
|
||||
}
|
||||
|
||||
GRUB_MOD_FINI(tga)
|
||||
{
|
||||
#if defined(TGA_DEBUG)
|
||||
grub_unregister_command (cmd);
|
||||
#endif
|
||||
grub_video_bitmap_reader_unregister (&tga_reader);
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue