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Diffstat (limited to 'apps/plugins/lib/gray_drawbitmap.c')
| -rw-r--r-- | apps/plugins/lib/gray_drawbitmap.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/apps/plugins/lib/gray_drawbitmap.c b/apps/plugins/lib/gray_drawbitmap.c deleted file mode 100644 index 376f76d..0000000 --- a/apps/plugins/lib/gray_drawbitmap.c +++ /dev/null @@ -1,116 +0,0 @@ -/*************************************************************************** -* __________ __ ___. -* Open \______ \ ____ ____ | | _\_ |__ _______ ___ -* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / -* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < -* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ -* \/ \/ \/ \/ \/ -* $Id$ -* -* Grayscale framework -* gray_drawbitmap() function -* -* This is a generic framework to use grayscale display within Rockbox -* plugins. It obviously does not work for the player. -* -* Copyright (C) 2004 Jens Arnold -* -* All files in this archive are subject to the GNU General Public License. -* See the file COPYING in the source tree root for full license agreement. -* -* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY -* KIND, either express or implied. -* -****************************************************************************/ - -#ifndef SIMULATOR /* not for simulator by now */ -#include "plugin.h" - -#ifdef HAVE_LCD_BITMAP /* and also not for the Player */ -#include "gray.h" - -/*--------------------------------------------------------------------------- - Display a bitmap with the current drawinfo - ---------------------------------------------------------------------------- - The drawmode is used as described for gray_set_drawmode() - - This (now) uses the same bitmap format as the core b&w graphics routines, - so you can use bmp2rb to generate bitmaps for use with this function as - well. - - A bitmap contains one bit for every pixel that defines if that pixel is - foreground (1) or background (0). Bits within a byte are arranged - vertically, LSB at top. - The bytes are stored in row-major order, with byte 0 being top left, - byte 1 2nd from left etc. The first row of bytes defines pixel rows - 0..7, the second row defines pixel row 8..15 etc. - - The <stride> parameter is useful if you want to show only a part of a - bitmap. It should always be set to the "row length" of the bitmap. - */ -void gray_drawbitmap(const unsigned char *src, int x, int y, int nx, int ny, - int stride) -{ - int shift; - unsigned bits, mask_top, mask_bottom; - const unsigned char *src_col; - unsigned char *dst, *dst_col; - void (*blockfunc)(unsigned char *address, unsigned mask, unsigned bits); - - if ((unsigned) x >= (unsigned) _graybuf->width - || (unsigned) y >= (unsigned) _graybuf->height) - return; - - if ((unsigned) (y + ny) >= (unsigned) _graybuf->height) /* clip bottom */ - ny = _graybuf->height - y; - - if ((unsigned) (x + nx) >= (unsigned) _graybuf->width) /* clip right */ - nx = _graybuf->width - x; - - dst = _graybuf->data + x + MULU16(_graybuf->width, y >> 3); - shift = y & 7; - ny += shift; - - mask_top = 0xFFu << (y & 7); - mask_bottom = ~(0xFEu << ((ny - 1) & 7)); - if (ny <= 8) - mask_bottom &= mask_top; - - blockfunc = _gray_blockfuncs[_graybuf->drawmode]; - - for(x = 0; x < nx; x++) - { - src_col = src++; - dst_col = dst++; - bits = 0; - y = 0; - - if (ny > 8) - { - bits = *src_col << shift; - src_col += stride; - - blockfunc(dst_col, mask_top, bits); - dst_col += _graybuf->width; - bits >>= 8; - - for (y = 8; y < ny - 8; y += 8) - { - bits |= *src_col << shift; - src_col += stride; - - blockfunc(dst_col, 0xFFu, bits); - dst_col += _graybuf->width; - bits >>= 8; - } - } - if (y + shift < ny) - bits |= *src_col << shift; - - blockfunc(dst_col, mask_bottom, bits); - } -} - -#endif // #ifdef HAVE_LCD_BITMAP -#endif // #ifndef SIMULATOR - |