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Complete rework of the grayscale library: (1) Implemented the new rockbox graphics api. (2) Added buffered mode, and implemented most drawing functions for buffered mode only. Buffered mode will ease implementation of animated graphics. Some functions are additionally provided as unbuffered versions (drawing grayscale bitmaps, scrolling) since unbuffered mode is better suited for non-animated graphics (JPEG viewer, mandelbrot) and saves some RAM, which is important on Archos. (3) Put all functions in a couple of source files, no more one-function-per-files. This became possible since sectioned compilation for the plugin library and appropriate linking for the pluginswas introduced, otherwise the binaries would be bloated by unused functions.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7241 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-07-25 20:50:34 +00:00
parent 12a4ed383f
commit c20a00ef3e
37 changed files with 2145 additions and 3328 deletions
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72
apps/plugins/jpeg.c
View file

@ -1523,7 +1523,7 @@ void cleanup(void *parameter)
{
(void)parameter;
gray_show_display(false);
gray_show(false);
}
/* interactively scroll around the image */
@ -1548,13 +1548,12 @@ int scroll_bmp(struct t_disp* pdisp)
move = MIN(10, pdisp->x);
if (move > 0)
{
gray_scroll_right(move, false); /* scroll right */
gray_ub_scroll_right(move); /* scroll right */
pdisp->x -= move;
gray_drawgraymap(
pdisp->bitmap + pdisp->y * pdisp->stride + pdisp->x,
0, MAX(0, (LCD_HEIGHT-pdisp->height)/2), // x, y
move, MIN(LCD_HEIGHT, pdisp->height), // w, h
pdisp->stride);
gray_ub_gray_bitmap_part(
pdisp->bitmap, pdisp->x, pdisp->y, pdisp->stride,
0, MAX(0, (LCD_HEIGHT-pdisp->height)/2), /* x, y */
move, MIN(LCD_HEIGHT, pdisp->height)); /* w, h */
}
break;
@ -1563,13 +1562,13 @@ int scroll_bmp(struct t_disp* pdisp)
move = MIN(10, pdisp->width - pdisp->x - LCD_WIDTH);
if (move > 0)
{
gray_scroll_left(move, false); /* scroll left */
gray_ub_scroll_left(move); /* scroll left */
pdisp->x += move;
gray_drawgraymap(
pdisp->bitmap + pdisp->y * pdisp->stride + pdisp->x + LCD_WIDTH - move,
gray_ub_gray_bitmap_part(
pdisp->bitmap, pdisp->x + LCD_WIDTH - move,
pdisp->y, pdisp->stride,
LCD_WIDTH - move, MAX(0, (LCD_HEIGHT-pdisp->height)/2), /* x, y */
move, MIN(LCD_HEIGHT, pdisp->height), /* w, h */
pdisp->stride);
move, MIN(LCD_HEIGHT, pdisp->height)); /* w, h */
}
break;
@ -1578,16 +1577,12 @@ int scroll_bmp(struct t_disp* pdisp)
move = MIN(8, pdisp->y);
if (move > 0)
{
if (move == 8)
gray_scroll_down8(false); /* scroll down by 8 pixel */
else
gray_scroll_down(move, false); /* scroll down 1..7 pixel */
gray_ub_scroll_down(move); /* scroll down */
pdisp->y -= move;
gray_drawgraymap(
pdisp->bitmap + pdisp->y * pdisp->stride + pdisp->x,
MAX(0, (LCD_WIDTH-pdisp->width)/2), 0, /* x, y */
MIN(LCD_WIDTH, pdisp->width), move, /* w, h */
pdisp->stride);
gray_ub_gray_bitmap_part(
pdisp->bitmap, pdisp->x, pdisp->y, pdisp->stride,
MAX(0, (LCD_WIDTH-pdisp->width)/2), 0, /* x, y */
MIN(LCD_WIDTH, pdisp->width), move); /* w, h */
}
break;
@ -1596,16 +1591,13 @@ int scroll_bmp(struct t_disp* pdisp)
move = MIN(8, pdisp->height - pdisp->y - LCD_HEIGHT);
if (move > 0)
{
if (move == 8)
gray_scroll_up8(false); /* scroll up by 8 pixel */
else
gray_scroll_up(move, false); /* scroll up 1..7 pixel */
gray_ub_scroll_up(move); /* scroll up */
pdisp->y += move;
gray_drawgraymap(
pdisp->bitmap + (pdisp->y + LCD_HEIGHT - move) * pdisp->stride + pdisp->x,
gray_ub_gray_bitmap_part(
pdisp->bitmap, pdisp->x,
pdisp->y + LCD_HEIGHT - move, pdisp->stride,
MAX(0, (LCD_WIDTH-pdisp->width)/2), LCD_HEIGHT - move, /* x, y */
MIN(LCD_WIDTH, pdisp->width), move, /* w, h */
pdisp->stride);
MIN(LCD_WIDTH, pdisp->width), move); /* w, h */
}
break;
@ -1806,7 +1798,7 @@ int main(char* filename)
int fd;
int filesize;
int grayscales;
int graysize; // helper
long graysize; // helper
unsigned char* buf_jpeg; /* compressed JPEG image */
static struct jpeg jpg; /* too large for stack */
int status;
@ -1830,7 +1822,7 @@ int main(char* filename)
/* initialize the grayscale buffer:
* 112 pixels wide, 8 rows (64 pixels) high, (try to) reserve
* 32 bitplanes for 33 shades of gray. (uses 28856 bytes)*/
grayscales = gray_init_buffer(buf, buf_size, 112, 8, 32, &graysize) + 1;
grayscales = gray_init(rb, buf, buf_size, false, 112, 8, 32, &graysize) + 1;
buf += graysize;
buf_size -= graysize;
if (grayscales < 33 || buf_size <= 0)
@ -1907,16 +1899,15 @@ int main(char* filename)
rb->lcd_puts(0, 3, print);
rb->lcd_update();
gray_clear_display();
gray_drawgraymap(
p_disp->bitmap + p_disp->y * p_disp->stride + p_disp->x,
gray_ub_clear_display();
gray_ub_gray_bitmap_part(
p_disp->bitmap, p_disp->x, p_disp->y, p_disp->stride,
MAX(0, (LCD_WIDTH - p_disp->width) / 2),
MAX(0, (LCD_HEIGHT - p_disp->height) / 2),
MIN(LCD_WIDTH, p_disp->width),
MIN(LCD_HEIGHT, p_disp->height),
p_disp->stride);
MIN(LCD_HEIGHT, p_disp->height));
gray_show_display(true); /* switch on grayscale overlay */
gray_show(true); /* switch on grayscale overlay */
/* drawing is now finished, play around with scrolling
* until you press OFF or connect USB
@ -1952,12 +1943,12 @@ int main(char* filename)
break;
}
gray_show_display(false); /* switch off overlay */
gray_show(false); /* switch off overlay */
}
while (status != PLUGIN_OK && status != PLUGIN_USB_CONNECTED);
gray_release_buffer(); /* deinitialize */
gray_release(); /* deinitialize */
return status;
}
@ -1973,9 +1964,6 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
rb = api; /* copy to global api pointer */
/* This plugin uses the grayscale framework, so initialize */
gray_init(api);
return main((char*)parameter);
}