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JPEG viewer adapted to colour targets (greyscale only for now). New functions in the lcd extensions plugin library for drawing canonical greyscale bitmaps.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8617 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-02-08 01:14:29 +00:00
parent cb0c5a3c03
commit 56647275b5
3 changed files with 199 additions and 19 deletions
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132
apps/plugins/lib/xlcd.c
View file

@ -107,6 +107,138 @@ void xlcd_filltriangle(int x1, int y1, int x2, int y2, int x3, int y3)
#if LCD_DEPTH >= 8
#ifdef HAVE_LCD_COLOR
static const fb_data graylut[256] = {
#if LCD_PIXELFORMAT == RGB565
0x0000, 0x0000, 0x0000, 0x0020, 0x0020, 0x0821, 0x0821, 0x0841,
0x0841, 0x0841, 0x0841, 0x0861, 0x0861, 0x1062, 0x1062, 0x1082,
0x1082, 0x1082, 0x1082, 0x10a2, 0x10a2, 0x18a3, 0x18a3, 0x18c3,
0x18c3, 0x18c3, 0x18c3, 0x18e3, 0x18e3, 0x20e4, 0x20e4, 0x2104,
0x2104, 0x2104, 0x2104, 0x2124, 0x2124, 0x2124, 0x2925, 0x2945,
0x2945, 0x2945, 0x2945, 0x2965, 0x2965, 0x2965, 0x3166, 0x3186,
0x3186, 0x3186, 0x3186, 0x31a6, 0x31a6, 0x31a6, 0x39a7, 0x39c7,
0x39c7, 0x39c7, 0x39c7, 0x39e7, 0x39e7, 0x39e7, 0x41e8, 0x4208,
0x4208, 0x4208, 0x4208, 0x4228, 0x4228, 0x4228, 0x4a29, 0x4a49,
0x4a49, 0x4a49, 0x4a49, 0x4a69, 0x4a69, 0x4a69, 0x4a69, 0x528a,
0x528a, 0x528a, 0x528a, 0x52aa, 0x52aa, 0x52aa, 0x52aa, 0x5aab,
0x5acb, 0x5acb, 0x5acb, 0x5acb, 0x5aeb, 0x5aeb, 0x5aeb, 0x62ec,
0x630c, 0x630c, 0x630c, 0x630c, 0x632c, 0x632c, 0x632c, 0x6b2d,
0x6b4d, 0x6b4d, 0x6b4d, 0x6b4d, 0x6b6d, 0x6b6d, 0x6b6d, 0x6b6d,
0x738e, 0x738e, 0x738e, 0x738e, 0x73ae, 0x73ae, 0x73ae, 0x73ae,
0x7bcf, 0x7bcf, 0x7bcf, 0x7bcf, 0x7bef, 0x7bef, 0x7bef, 0x7bef,
0x8410, 0x8410, 0x8410, 0x8410, 0x8430, 0x8430, 0x8430, 0x8430,
0x8c51, 0x8c51, 0x8c51, 0x8c51, 0x8c71, 0x8c71, 0x8c71, 0x8c71,
0x9492, 0x9492, 0x9492, 0x9492, 0x94b2, 0x94b2, 0x94b2, 0x94b2,
0x94d2, 0x9cd3, 0x9cd3, 0x9cd3, 0x9cf3, 0x9cf3, 0x9cf3, 0x9cf3,
0x9d13, 0xa514, 0xa514, 0xa514, 0xa534, 0xa534, 0xa534, 0xa534,
0xa554, 0xad55, 0xad55, 0xad55, 0xad55, 0xad75, 0xad75, 0xad75,
0xad75, 0xb596, 0xb596, 0xb596, 0xb596, 0xb5b6, 0xb5b6, 0xb5b6,
0xb5b6, 0xb5d6, 0xbdd7, 0xbdd7, 0xbdd7, 0xbdf7, 0xbdf7, 0xbdf7,
0xbdf7, 0xbe17, 0xc618, 0xc618, 0xc618, 0xc638, 0xc638, 0xc638,
0xc638, 0xc658, 0xce59, 0xce59, 0xce59, 0xce79, 0xce79, 0xce79,
0xce79, 0xce99, 0xd69a, 0xd69a, 0xd69a, 0xd6ba, 0xd6ba, 0xd6ba,
0xd6ba, 0xd6da, 0xd6da, 0xdedb, 0xdedb, 0xdefb, 0xdefb, 0xdefb,
0xdefb, 0xdf1b, 0xdf1b, 0xe71c, 0xe71c, 0xe73c, 0xe73c, 0xe73c,
0xe73c, 0xe75c, 0xe75c, 0xef5d, 0xef5d, 0xef7d, 0xef7d, 0xef7d,
0xef7d, 0xef9d, 0xef9d, 0xf79e, 0xf79e, 0xf7be, 0xf7be, 0xf7be,
0xf7be, 0xf7de, 0xf7de, 0xffdf, 0xffdf, 0xffff, 0xffff, 0xffff
#elif LCD_PIXELFORMAT == RGB565SWAPPED
0x0000, 0x0000, 0x0000, 0x2000, 0x2000, 0x2108, 0x2108, 0x4108,
0x4108, 0x4108, 0x4108, 0x6108, 0x6108, 0x6210, 0x6210, 0x8210,
0x8210, 0x8210, 0x8210, 0xa210, 0xa210, 0xa318, 0xa318, 0xc318,
0xc318, 0xc318, 0xc318, 0xe318, 0xe318, 0xe420, 0xe420, 0x0421,
0x0421, 0x0421, 0x0421, 0x2421, 0x2421, 0x2421, 0x2529, 0x4529,
0x4529, 0x4529, 0x4529, 0x6529, 0x6529, 0x6529, 0x6631, 0x8631,
0x8631, 0x8631, 0x8631, 0xa631, 0xa631, 0xa631, 0xa739, 0xc739,
0xc739, 0xc739, 0xc739, 0xe739, 0xe739, 0xe739, 0xe841, 0x0842,
0x0842, 0x0842, 0x0842, 0x2842, 0x2842, 0x2842, 0x294a, 0x494a,
0x494a, 0x494a, 0x494a, 0x694a, 0x694a, 0x694a, 0x694a, 0x8a52,
0x8a52, 0x8a52, 0x8a52, 0xaa52, 0xaa52, 0xaa52, 0xaa52, 0xab5a,
0xcb5a, 0xcb5a, 0xcb5a, 0xcb5a, 0xeb5a, 0xeb5a, 0xeb5a, 0xec62,
0x0c63, 0x0c63, 0x0c63, 0x0c63, 0x2c63, 0x2c63, 0x2c63, 0x2d6b,
0x4d6b, 0x4d6b, 0x4d6b, 0x4d6b, 0x6d6b, 0x6d6b, 0x6d6b, 0x6d6b,
0x8e73, 0x8e73, 0x8e73, 0x8e73, 0xae73, 0xae73, 0xae73, 0xae73,
0xcf7b, 0xcf7b, 0xcf7b, 0xcf7b, 0xef7b, 0xef7b, 0xef7b, 0xef7b,
0x1084, 0x1084, 0x1084, 0x1084, 0x3084, 0x3084, 0x3084, 0x3084,
0x518c, 0x518c, 0x518c, 0x518c, 0x718c, 0x718c, 0x718c, 0x718c,
0x9294, 0x9294, 0x9294, 0x9294, 0xb294, 0xb294, 0xb294, 0xb294,
0xd294, 0xd39c, 0xd39c, 0xd39c, 0xf39c, 0xf39c, 0xf39c, 0xf39c,
0x139d, 0x14a5, 0x14a5, 0x14a5, 0x34a5, 0x34a5, 0x34a5, 0x34a5,
0x54a5, 0x55ad, 0x55ad, 0x55ad, 0x55ad, 0x75ad, 0x75ad, 0x75ad,
0x75ad, 0x96b5, 0x96b5, 0x96b5, 0x96b5, 0xb6b5, 0xb6b5, 0xb6b5,
0xb6b5, 0xd6b5, 0xd7bd, 0xd7bd, 0xd7bd, 0xf7bd, 0xf7bd, 0xf7bd,
0xf7bd, 0x17be, 0x18c6, 0x18c6, 0x18c6, 0x38c6, 0x38c6, 0x38c6,
0x38c6, 0x58c6, 0x59ce, 0x59ce, 0x59ce, 0x79ce, 0x79ce, 0x79ce,
0x79ce, 0x99ce, 0x9ad6, 0x9ad6, 0x9ad6, 0xbad6, 0xbad6, 0xbad6,
0xbad6, 0xdad6, 0xdad6, 0xdbde, 0xdbde, 0xfbde, 0xfbde, 0xfbde,
0xfbde, 0x1bdf, 0x1bdf, 0x1ce7, 0x1ce7, 0x3ce7, 0x3ce7, 0x3ce7,
0x3ce7, 0x5ce7, 0x5ce7, 0x5def, 0x5def, 0x7def, 0x7def, 0x7def,
0x7def, 0x9def, 0x9def, 0x9ef7, 0x9ef7, 0xbef7, 0xbef7, 0xbef7,
0xbef7, 0xdef7, 0xdef7, 0xdfff, 0xdfff, 0xffff, 0xffff, 0xffff
#endif /* LCD_PIXELFORMAT */
};
#endif /* HAVE_LCD_COLOR */
/* Draw a partial greyscale bitmap, canonical 8 bit format */
void xlcd_gray_bitmap_part(const unsigned char *src, int src_x, int src_y,
int stride, int x, int y, int width, int height)
{
const unsigned char *src_end;
fb_data *dst;
/* nothing to draw? */
if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) || (y >= LCD_HEIGHT)
|| (x + width <= 0) || (y + height <= 0))
return;
/* clipping */
if (x < 0)
{
width += x;
src_x -= x;
x = 0;
}
if (y < 0)
{
height += y;
src_y -= y;
y = 0;
}
if (x + width > LCD_WIDTH)
width = LCD_WIDTH - x;
if (y + height > LCD_HEIGHT)
height = LCD_HEIGHT - y;
src += stride * src_y + src_x; /* move starting point */
src_end = src + stride * height;
dst = local_rb->lcd_framebuffer + LCD_WIDTH * y + x;
do
{
const unsigned char *src_row = src;
const unsigned char *row_end = src_row + width;
fb_data *dst_row = dst;
#ifdef HAVE_LCD_COLOR
do
*dst_row++ = graylut[*src_row++];
while (src_row < row_end);
#endif
src += stride;
dst += LCD_WIDTH;
}
while (src < src_end);
}
/* Draw a full greyscale bitmap, canonical 8 bit format */
void xlcd_gray_bitmap(const unsigned char *src, int x, int y, int width,
int height)
{
xlcd_gray_bitmap_part(src, 0, 0, width, x, y, width, height);
}
void xlcd_scroll_left(int count)
{
fb_data *data, *data_end;