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LCD extension library: Implemented scrolling for LCD depths below 8 bit. * Oscilloscope: Use new scrolling function, some minor optimisations.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8951 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2006-03-08 01:14:46 +00:00
parent 761652abf7
commit 19b45a4374
8 changed files with 1026 additions and 72 deletions
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69
apps/plugins/oscilloscope.c
View file

@ -24,6 +24,7 @@
#ifdef HAVE_LCD_BITMAP /* and also not for the Player */
#if CONFIG_CODEC != SWCODEC /* only for MAS-targets */
#include "xlcd.h"
PLUGIN_HEADER
@ -77,88 +78,34 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter);
/* implementation */
void lcd_scroll_left(int count, bool black_border)
{
int by;
unsigned filler;
unsigned char *ptr;
if ((unsigned) count >= LCD_WIDTH)
return;
filler = black_border ? 0xFF : 0;
for (by = 0; by < (LCD_HEIGHT/8); by++)
{
ptr = rb->lcd_framebuffer + MULU16(LCD_WIDTH, by);
asm volatile (
"mov %0,r1 \n" /* check if both source... */
"or %2,r1 \n" /* ...and offset are even */
"shlr r1 \n" /* -> lsb = 0 */
"bf .sl_start2 \n" /* -> copy word-wise */
"add #-1,%2 \n" /* copy byte-wise */
".sl_loop1: \n"
"mov.b @%0+,r1 \n"
"mov.b r1,@(%2,%0) \n"
"cmp/hi %0,%1 \n"
"bt .sl_loop1 \n"
"bra .sl_end \n"
"nop \n"
".sl_start2: \n" /* copy word-wise */
"add #-2,%2 \n"
".sl_loop2: \n"
"mov.w @%0+,r1 \n"
"mov.w r1,@(%2,%0) \n"
"cmp/hi %0,%1 \n"
"bt .sl_loop2 \n"
".sl_end: \n"
: /* outputs */
: /* inputs */
/* %0 */ "r"(ptr + count),
/* %1 */ "r"(ptr + LCD_WIDTH),
/* %2 */ "z"(-count)
: /* clobbers */
"r1"
);
rb->memset(ptr + LCD_WIDTH - count, filler, count);
}
}
void timer_isr(void)
{
static int last_left, last_right;
bool full_update = false;
if (new_val)
{
{
if ((unsigned)x >= LCD_WIDTH)
{
if (scroll)
{
lcd_scroll_left(1, false);
xlcd_scroll_left(1);
x = LCD_WIDTH-1;
full_update = true;
}
else
x = 0;
}
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
rb->lcd_drawline(x, 0, x, LCD_HEIGHT-1);
rb->lcd_vline(x, 0, LCD_HEIGHT-1);
rb->lcd_set_drawmode(DRMODE_SOLID);
switch (draw_mode)
{
case DRAW_MODE_FILLED:
rb->lcd_drawline(x, LCD_HEIGHT/2+1,
x, LCD_HEIGHT/2+1 + left_val);
rb->lcd_drawline(x, LCD_HEIGHT/2-1,
x, LCD_HEIGHT/2-1 - right_val);
rb->lcd_vline(x, LCD_HEIGHT/2+1, LCD_HEIGHT/2+1 + left_val);
rb->lcd_vline(x, LCD_HEIGHT/2-1, LCD_HEIGHT/2-1 - right_val);
break;
case DRAW_MODE_OUTLINE:
@ -205,6 +152,8 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
(void)parameter;
rb = api;
xlcd_init(rb);
rb->timer_register(1, NULL, FREQ / 67, 1, timer_isr);