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iAudio M3: Optimised LCD driver, with more/better assembly code. Speedup is ~80% when boosted, ~15% when unboosted. Also implemented grey phase blitting. * Adapted the greyscale library, and the plugins using it. * Fixed a bug in greyscale scroll down for vertically packed pixels.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16809 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2008-03-25 23:21:36 +00:00
parent 6ceaf321f3
commit 40919d7db2
20 changed files with 744 additions and 315 deletions
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8
apps/plugins/lib/grey_draw.c
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@ -630,14 +630,14 @@ void grey_ub_gray_bitmap_part(const unsigned char *src, int src_x, int src_y,
{
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
int idx = _GREY_MULUQ(_grey_info.width, yc);
#else
#else /* vertical packing or vertical interleaved */
int idx = _GREY_MULUQ(_grey_info.width, yc & ~_GREY_BMASK)
+ (~yc & _GREY_BMASK);
#endif /* LCD_PIXELFORMAT */
#if (LCD_PIXELFORMAT == VERTICAL_PACKING) && \
((LCD_DEPTH == 2) && defined(CPU_COLDFIRE) \
|| (LCD_DEPTH == 1) && (CONFIG_CPU == SH7034))
#if ((LCD_PIXELFORMAT == VERTICAL_PACKING) && (LCD_DEPTH == 1) && (CONFIG_CPU == SH7034)) \
|| ((LCD_PIXELFORMAT == VERTICAL_PACKING) && (LCD_DEPTH == 2) && defined(CPU_COLDFIRE)) \
|| ((LCD_PIXELFORMAT == VERTICAL_INTERLEAVED) && defined(CPU_COLDFIRE))
_grey_line1(width, dst + idx, src, _grey_info.gvalue);
#else
unsigned char *dst_row = dst + idx;