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plug-ins: move static variables for grayscale mapping to the top

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In preparation of using some of them earlier, we move the variables
used for grayscale mapping of 1, 2 and 4-bit per pixel images to the
top of file-tiff-load.
This commit is contained in:
Jacob Boerema
2022-06-07 18:41:00 -04:00
parent 660c588d1b
commit 11ef2e4432
1 changed files with 38 additions and 37 deletions
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75
plug-ins/file-tiff/file-tiff-load.c
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@ -154,6 +154,44 @@ static gboolean load_dialog (TIFF *tif,
DefaultExtra *default_extra);
/* Grayscale conversion mappings */
static const guchar _1_to_8_bitmap [2] =
{
0, 255
};
static const guchar _1_to_8_bitmap_rev [2] =
{
255, 0
};
static const guchar _2_to_8_bitmap [4] =
{
0, 85, 170, 255
};
static const guchar _2_to_8_bitmap_rev [4] =
{
255, 170, 85, 0
};
static const guchar _4_to_8_bitmap [16] =
{
0, 17, 34, 51, 68, 85, 102, 119,
136, 153, 170, 187, 204, 221, 238, 255
};
static const guchar _4_to_8_bitmap_rev [16] =
{
255, 238, 221, 204, 187, 170, 153, 136,
119, 102, 85, 68, 51, 34, 17, 0
};
static guchar bit2byte[256 * 8];
static guchar _2bit2byte[256 * 4];
static guchar _4bit2byte[256 * 2];
/* returns a pointer into the TIFF */
static const gchar *
tiff_get_page_name (TIFF *tif)
@ -2255,43 +2293,6 @@ load_separate (TIFF *tif,
g_free (bw_buffer);
}
static guchar bit2byte[256 * 8];
static guchar _2bit2byte[256 * 4];
static guchar _4bit2byte[256 * 2];
static const guchar _1_to_8_bitmap [2] =
{
0, 255
};
static const guchar _1_to_8_bitmap_rev [2] =
{
255, 0
};
static const guchar _2_to_8_bitmap [4] =
{
0, 85, 170, 255
};
static const guchar _2_to_8_bitmap_rev [4] =
{
255, 170, 85, 0
};
static const guchar _4_to_8_bitmap [16] =
{
0, 17, 34, 51, 68, 85, 102, 119,
136, 153, 170, 187, 204, 221, 238, 255
};
static const guchar _4_to_8_bitmap_rev [16] =
{
255, 238, 221, 204, 187, 170, 153, 136,
119, 102, 85, 68, 51, 34, 17, 0
};
static void
fill_bit2byte (TiffColorMode tiff_mode)
{