Firmware2/ArduinoAddons/Arduino_1.0.x/libraries/U8glib/utility/u8g_pb8h1.c
2014-07-03 18:51:52 -05:00

390 lines
9.4 KiB
C

/*
u8g_pb8h1.c
8bit height monochrom (1 bit) page buffer
byte has horizontal orientation
Universal 8bit Graphics Library
Copyright (c) 2011, olikraus@gmail.com
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or other
materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
total buffer size is limited to 256 bytes because of the calculation inside the set pixel procedure
23. Sep 2012: Bug with down procedure, see FPS 1st page --> fixed (bug located in u8g_clip.c)
*/
#include "u8g.h"
#include <string.h>
#ifdef __unix__
#include <assert.h>
#endif
/* NEW_CODE disabled, because the performance increase was too slow and not worth compared */
/* to the increase of code size */
/* #define NEW_CODE */
#ifdef __unix__
void *u8g_buf_lower_limit;
void *u8g_buf_upper_limit;
#endif
void u8g_pb8h1_Init(u8g_pb_t *b, void *buf, u8g_uint_t width) U8G_NOINLINE;
void u8g_pb8h1_set_pixel(u8g_pb_t *b, u8g_uint_t x, u8g_uint_t y, uint8_t color_index) U8G_NOINLINE;
void u8g_pb8h1_SetPixel(u8g_pb_t *b, const u8g_dev_arg_pixel_t * const arg_pixel) U8G_NOINLINE ;
void u8g_pb8h1_Set8PixelStd(u8g_pb_t *b, u8g_dev_arg_pixel_t *arg_pixel) U8G_NOINLINE;
uint8_t u8g_dev_pb8h1_base_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg);
#ifdef NEW_CODE
struct u8g_pb_h1_struct
{
u8g_uint_t x;
u8g_uint_t y;
uint8_t *ptr;
uint8_t mask;
uint8_t line_byte_len;
uint8_t cnt;
};
static uint8_t u8g_pb8h1_bitmask[8] = { 0x080, 0x040, 0x020, 0x010, 0x008, 0x004, 0x002, 0x001 };
static void u8g_pb8h1_state_right(struct u8g_pb_h1_struct *s) U8G_NOINLINE;
static void u8g_pb8h1_state_right(struct u8g_pb_h1_struct *s)
{
register u8g_uint_t x;
x = s->x;
x++;
s->x = x;
x &= 7;
s->mask = u8g_pb8h1_bitmask[x];
if ( x == 0 )
s->ptr++;
}
static void u8g_pb8h1_state_left(struct u8g_pb_h1_struct *s)
{
register u8g_uint_t x;
x = s->x;
x--;
s->x = x;
x &= 7;
s->mask = u8g_pb8h1_bitmask[x];
if ( x == 7 )
s->ptr--;
}
static void u8g_pb8h1_state_down(struct u8g_pb_h1_struct *s)
{
s->y++;
s->ptr += s->line_byte_len;
}
static void u8g_pb8h1_state_up(struct u8g_pb_h1_struct *s)
{
s->y--;
s->ptr -= s->line_byte_len;
}
static void u8g_pb8h1_state_init(struct u8g_pb_h1_struct *s, u8g_pb_t *b, u8g_uint_t x, u8g_uint_t y) U8G_NOINLINE;
static void u8g_pb8h1_state_init(struct u8g_pb_h1_struct *s, u8g_pb_t *b, u8g_uint_t x, u8g_uint_t y)
{
u8g_uint_t tmp;
uint8_t *ptr = b->buf;
s->x = x;
s->y = y;
y -= b->p.page_y0;
tmp = b->width;
tmp >>= 3;
s->line_byte_len = tmp;
/* assume negative y values, can be down to -7, subtract this from the pointer and add correction of 8 to y */
ptr -= tmp*8;
y+=8;
/* it is important that the result of tmp*y can be 16 bit value also for 8 bit mode */
ptr += tmp*y;
s->mask = u8g_pb8h1_bitmask[x & 7];
/* assume negative x values (to -7), subtract 8 pixel from the pointer and add 8 to x */
ptr--;
x += 8;
x >>= 3;
ptr += x;
s->ptr = ptr;
}
static void u8g_pb8h1_state_set_pixel(struct u8g_pb_h1_struct *s, uint8_t color_index) U8G_NOINLINE;
static void u8g_pb8h1_state_set_pixel(struct u8g_pb_h1_struct *s, uint8_t color_index)
{
#ifdef __unix__
assert( s->ptr >= u8g_buf_lower_limit );
assert( s->ptr < u8g_buf_upper_limit );
#endif
if ( color_index )
{
*s->ptr |= s->mask;
}
else
{
uint8_t mask = s->mask;
mask ^=0xff;
*s->ptr &= mask;
}
}
#endif
void u8g_pb8h1_Init(u8g_pb_t *b, void *buf, u8g_uint_t width)
{
b->buf = buf;
b->width = width;
u8g_pb_Clear(b);
}
/* limitation: total buffer must not exceed 256 bytes */
void u8g_pb8h1_set_pixel(u8g_pb_t *b, u8g_uint_t x, u8g_uint_t y, uint8_t color_index)
{
#ifdef NEW_CODE
struct u8g_pb_h1_struct s;
u8g_pb8h1_state_init(&s, b, x, y);
u8g_pb8h1_state_set_pixel(&s, color_index);
// u8g_pb8h1_state_up(&s);
// if ( s.y > b->p.page_y1 )
// return;
// if ( s.x > b->width )
// return;
// u8g_pb8h1_state_set_pixel(&s, color_index);
#else
register uint8_t mask;
u8g_uint_t tmp;
uint8_t *ptr = b->buf;
y -= b->p.page_y0;
tmp = b->width;
tmp >>= 3;
tmp *= (uint8_t)y;
ptr += tmp;
mask = 0x080;
mask >>= x & 7;
x >>= 3;
ptr += x;
if ( color_index )
{
*ptr |= mask;
}
else
{
mask ^=0xff;
*ptr &= mask;
}
#endif
}
void u8g_pb8h1_SetPixel(u8g_pb_t *b, const u8g_dev_arg_pixel_t * const arg_pixel)
{
if ( arg_pixel->y < b->p.page_y0 )
return;
if ( arg_pixel->y > b->p.page_y1 )
return;
if ( arg_pixel->x >= b->width )
return;
u8g_pb8h1_set_pixel(b, arg_pixel->x, arg_pixel->y, arg_pixel->color);
}
void u8g_pb8h1_Set8PixelStd(u8g_pb_t *b, u8g_dev_arg_pixel_t *arg_pixel)
{
register uint8_t pixel = arg_pixel->pixel;
do
{
if ( pixel & 128 )
{
u8g_pb8h1_SetPixel(b, arg_pixel);
}
switch( arg_pixel->dir )
{
case 0: arg_pixel->x++; break;
case 1: arg_pixel->y++; break;
case 2: arg_pixel->x--; break;
case 3: arg_pixel->y--; break;
}
pixel <<= 1;
} while( pixel != 0 );
}
void u8g_pb8h1_Set8PixelOpt2(u8g_pb_t *b, u8g_dev_arg_pixel_t *arg_pixel)
{
register uint8_t pixel = arg_pixel->pixel;
u8g_uint_t dx = 0;
u8g_uint_t dy = 0;
switch( arg_pixel->dir )
{
case 0: dx++; break;
case 1: dy++; break;
case 2: dx--; break;
case 3: dy--; break;
}
do
{
if ( pixel & 128 )
u8g_pb8h1_SetPixel(b, arg_pixel);
arg_pixel->x += dx;
arg_pixel->y += dy;
pixel <<= 1;
} while( pixel != 0 );
}
#ifdef NEW_CODE
static void u8g_pb8h1_Set8PixelState(u8g_pb_t *b, u8g_dev_arg_pixel_t *arg_pixel)
{
register uint8_t pixel = arg_pixel->pixel;
struct u8g_pb_h1_struct s;
uint8_t cnt;
u8g_pb8h1_state_init(&s, b, arg_pixel->x, arg_pixel->y);
cnt = 8;
switch( arg_pixel->dir )
{
case 0:
do
{
if ( s.x < b->width )
if ( pixel & 128 )
u8g_pb8h1_state_set_pixel(&s, arg_pixel->color);
u8g_pb8h1_state_right(&s);
pixel <<= 1;
cnt--;
} while( cnt > 0 && pixel != 0 );
break;
case 1:
do
{
if ( s.y >= b->p.page_y0 )
if ( s.y <= b->p.page_y1 )
if ( pixel & 128 )
u8g_pb8h1_state_set_pixel(&s, arg_pixel->color);
u8g_pb8h1_state_down(&s);
pixel <<= 1;
cnt--;
} while( cnt > 0 && pixel != 0 );
break;
case 2:
do
{
if ( s.x < b->width )
if ( pixel & 128 )
u8g_pb8h1_state_set_pixel(&s, arg_pixel->color);
u8g_pb8h1_state_left(&s);
pixel <<= 1;
cnt--;
} while( cnt > 0 && pixel != 0 );
break;
case 3:
do
{
if ( s.y >= b->p.page_y0 )
if ( s.y <= b->p.page_y1 )
if ( pixel & 128 )
u8g_pb8h1_state_set_pixel(&s, arg_pixel->color);
u8g_pb8h1_state_up(&s);
pixel <<= 1;
cnt--;
} while( cnt > 0 && pixel != 0 );
break;
}
}
#endif
uint8_t u8g_dev_pb8h1_base_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
{
u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
switch(msg)
{
case U8G_DEV_MSG_SET_8PIXEL:
#ifdef NEW_CODE
if ( u8g_pb_Is8PixelVisible(pb, (u8g_dev_arg_pixel_t *)arg) )
u8g_pb8h1_Set8PixelState(pb, (u8g_dev_arg_pixel_t *)arg);
#else
if ( u8g_pb_Is8PixelVisible(pb, (u8g_dev_arg_pixel_t *)arg) )
u8g_pb8h1_Set8PixelOpt2(pb, (u8g_dev_arg_pixel_t *)arg);
#endif
break;
case U8G_DEV_MSG_SET_PIXEL:
u8g_pb8h1_SetPixel(pb, (u8g_dev_arg_pixel_t *)arg);
break;
case U8G_DEV_MSG_INIT:
break;
case U8G_DEV_MSG_STOP:
break;
case U8G_DEV_MSG_PAGE_FIRST:
u8g_pb_Clear(pb);
u8g_page_First(&(pb->p));
break;
case U8G_DEV_MSG_PAGE_NEXT:
if ( u8g_page_Next(&(pb->p)) == 0 )
return 0;
u8g_pb_Clear(pb);
break;
#ifdef U8G_DEV_MSG_IS_BBX_INTERSECTION
case U8G_DEV_MSG_IS_BBX_INTERSECTION:
return u8g_pb_IsIntersection(pb, (u8g_dev_arg_bbx_t *)arg);
#endif
case U8G_DEV_MSG_GET_PAGE_BOX:
u8g_pb_GetPageBox(pb, (u8g_box_t *)arg);
break;
case U8G_DEV_MSG_GET_WIDTH:
*((u8g_uint_t *)arg) = pb->width;
break;
case U8G_DEV_MSG_GET_HEIGHT:
*((u8g_uint_t *)arg) = pb->p.total_height;
break;
case U8G_DEV_MSG_SET_COLOR_INDEX:
break;
case U8G_DEV_MSG_SET_XY_CB:
break;
case U8G_DEV_MSG_GET_MODE:
return U8G_MODE_BW;
}
return 1;
}