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Pictureflow: Add support for vertical strides.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22604 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun 2009-09-02 03:32:50 +00:00
parent 2111c105c0
commit f0becad4a1
1 changed files with 15 additions and 9 deletions
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24
apps/plugins/pictureflow/pictureflow.c
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@ -1730,42 +1730,49 @@ void render_slide(struct slide_data *slide, const int alpha)
dy = (CAM_DIST_R + zo + fmul(xs, sinr)) / CAM_DIST;
const pix_t *ptr = &src[column * bmp->height];
const int pixelstep = BUFFER_WIDTH;
#if defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
#define PIXELSTEP_Y 1
#define LCDADDR(x, y) (&buffer[LCD_HEIGHT*(x) + (y)])
#else
#define PIXELSTEP_Y BUFFER_WIDTH
#define LCDADDR(x, y) (&buffer[(y)*BUFFER_WIDTH + (x)])
#endif
int p = (bmp->height-1-DISPLAY_OFFS) * PFREAL_ONE;
int plim = MAX(0, p - (LCD_HEIGHT/2-1) * dy);
pix_t *pixel = &buffer[((LCD_HEIGHT/2)-1)*BUFFER_WIDTH + x];
pix_t *pixel = LCDADDR(x, (LCD_HEIGHT/2)-1 );
if (alpha == 256) {
while (p >= plim) {
*pixel = ptr[((unsigned)p) >> PFREAL_SHIFT];
p -= dy;
pixel -= pixelstep;
pixel -= PIXELSTEP_Y;
}
} else {
while (p >= plim) {
*pixel = fade_color(ptr[((unsigned)p) >> PFREAL_SHIFT], alpha);
p -= dy;
pixel -= pixelstep;
pixel -= PIXELSTEP_Y;
}
}
p = (bmp->height-DISPLAY_OFFS) * PFREAL_ONE;
plim = MIN(sh * PFREAL_ONE, p + (LCD_HEIGHT/2) * dy);
int plim2 = MIN(MIN(sh + REFLECT_HEIGHT, sh * 2) * PFREAL_ONE,
p + (LCD_HEIGHT/2) * dy);
pixel = &buffer[(LCD_HEIGHT/2)*BUFFER_WIDTH + x];
pixel = LCDADDR(x, (LCD_HEIGHT/2) );
if (alpha == 256) {
while (p < plim) {
*pixel = ptr[((unsigned)p) >> PFREAL_SHIFT];
p += dy;
pixel += pixelstep;
pixel += PIXELSTEP_Y;
}
} else {
while (p < plim) {
*pixel = fade_color(ptr[((unsigned)p) >> PFREAL_SHIFT], alpha);
p += dy;
pixel += pixelstep;
pixel += PIXELSTEP_Y;
}
}
while (p < plim2) {
@ -1773,7 +1780,7 @@ void render_slide(struct slide_data *slide, const int alpha)
int lalpha = reftab[ty];
*pixel = fade_color(ptr[sh - 1 - ty], lalpha);
p += dy;
pixel += pixelstep;
pixel += PIXELSTEP_Y;
}
if (zo || slide->angle)
@ -1790,7 +1797,6 @@ void render_slide(struct slide_data *slide, const int alpha)
return;
}
/**
Jump the the given slide_index
*/