476 lines
13 KiB
C
476 lines
13 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2005 by Dave Chapman
|
|
* Copyright (C) 2009 by Karl Kurbjun
|
|
*
|
|
* Rockbox driver for 16-bit colour LCDs
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
|
|
/* to be #included by lcd-16bit*.c */
|
|
|
|
#if !defined(ROW_INC) || !defined(COL_INC)
|
|
#error ROW_INC or COL_INC not defined
|
|
#endif
|
|
|
|
enum fill_opt {
|
|
OPT_NONE = 0,
|
|
OPT_SET,
|
|
OPT_COPY
|
|
};
|
|
|
|
/*** globals ***/
|
|
static fb_data lcd_static_framebuffer[LCD_FBHEIGHT][LCD_FBWIDTH]
|
|
IRAM_LCDFRAMEBUFFER CACHEALIGN_AT_LEAST_ATTR(16);
|
|
|
|
static void *lcd_frameaddress_default(int x, int y);
|
|
|
|
static fb_data* lcd_backdrop = NULL;
|
|
static long lcd_backdrop_offset IDATA_ATTR = 0;
|
|
|
|
/* shouldn't be changed unless you want system-wide framebuffer changes! */
|
|
struct frame_buffer_t lcd_framebuffer_default =
|
|
{
|
|
{
|
|
.fb_ptr = &lcd_static_framebuffer[0][0]
|
|
},
|
|
.get_address_fn = &lcd_frameaddress_default,
|
|
.stride = STRIDE_MAIN(LCD_WIDTH, LCD_HEIGHT),
|
|
.elems = (LCD_FBWIDTH*LCD_FBHEIGHT),
|
|
};
|
|
|
|
static struct viewport default_vp =
|
|
{
|
|
.x = 0,
|
|
.y = 0,
|
|
.width = LCD_WIDTH,
|
|
.height = LCD_HEIGHT,
|
|
.flags = 0,
|
|
.font = FONT_SYSFIXED,
|
|
.drawmode = DRMODE_SOLID,
|
|
.buffer = NULL,
|
|
.fg_pattern = LCD_DEFAULT_FG,
|
|
.bg_pattern = LCD_DEFAULT_BG,
|
|
};
|
|
|
|
struct viewport* lcd_current_viewport IDATA_ATTR;
|
|
|
|
static void *lcd_frameaddress_default(int x, int y)
|
|
{
|
|
/* the default expects a buffer the same size as the screen */
|
|
struct frame_buffer_t *fb = lcd_current_viewport->buffer;
|
|
|
|
#if LCD_STRIDEFORMAT == VERTICAL_STRIDE
|
|
size_t element = (x * LCD_NATIVE_STRIDE(fb->stride)) + y;
|
|
#else
|
|
size_t element = (y * LCD_NATIVE_STRIDE(fb->stride)) + x;
|
|
#endif
|
|
return fb->fb_ptr + element;/*(element % fb->elems);*/
|
|
}
|
|
|
|
/* LCD init */
|
|
void lcd_init(void)
|
|
{
|
|
/* Initialize the viewport */
|
|
lcd_set_viewport(NULL);
|
|
|
|
lcd_clear_display();
|
|
|
|
/* Call device specific init */
|
|
lcd_init_device();
|
|
scroll_init();
|
|
}
|
|
|
|
/* Clear the whole display */
|
|
void lcd_clear_display(void)
|
|
{
|
|
struct viewport* old_vp = lcd_current_viewport;
|
|
|
|
lcd_current_viewport = &default_vp;
|
|
|
|
lcd_clear_viewport();
|
|
|
|
lcd_current_viewport = old_vp;
|
|
}
|
|
|
|
/*** parameter handling ***/
|
|
|
|
void lcd_set_foreground(unsigned color)
|
|
{
|
|
lcd_current_viewport->fg_pattern = color;
|
|
}
|
|
|
|
unsigned lcd_get_foreground(void)
|
|
{
|
|
return lcd_current_viewport->fg_pattern;
|
|
}
|
|
|
|
void lcd_set_background(unsigned color)
|
|
{
|
|
lcd_current_viewport->bg_pattern = color;
|
|
}
|
|
|
|
unsigned lcd_get_background(void)
|
|
{
|
|
return lcd_current_viewport->bg_pattern;
|
|
}
|
|
|
|
|
|
void lcd_set_backdrop(fb_data* backdrop)
|
|
{
|
|
lcd_backdrop = backdrop;
|
|
if (backdrop)
|
|
{
|
|
lcd_backdrop_offset = (intptr_t)backdrop - (intptr_t)FBADDR(0,0);
|
|
lcd_fastpixelfuncs = lcd_fastpixelfuncs_backdrop;
|
|
}
|
|
else
|
|
{
|
|
lcd_backdrop_offset = 0;
|
|
lcd_fastpixelfuncs = lcd_fastpixelfuncs_bgcolor;
|
|
}
|
|
}
|
|
|
|
fb_data* lcd_get_backdrop(void)
|
|
{
|
|
return lcd_backdrop;
|
|
}
|
|
|
|
/* Draw a full native bitmap */
|
|
void lcd_bitmap(const fb_data *src, int x, int y, int width, int height)
|
|
{
|
|
lcd_bitmap_part(src, 0, 0, STRIDE(SCREEN_MAIN, width, height), x, y, width, height);
|
|
}
|
|
|
|
/* Draw a full native bitmap with a transparent color */
|
|
void lcd_bitmap_transparent(const fb_data *src, int x, int y,
|
|
int width, int height)
|
|
{
|
|
lcd_bitmap_transparent_part(src, 0, 0,
|
|
STRIDE(SCREEN_MAIN, width, height), x, y, width, height);
|
|
}
|
|
|
|
/* draw alpha bitmap for anti-alias font */
|
|
void ICODE_ATTR lcd_alpha_bitmap_part(const unsigned char *src, int src_x,
|
|
int src_y, int stride, int x, int y,
|
|
int width, int height)
|
|
{
|
|
lcd_alpha_bitmap_part_mix(NULL, src, src_x, src_y, x, y, width, height, 0, stride);
|
|
}
|
|
|
|
/* Draw a partial bitmap (mono or native) including alpha channel */
|
|
void ICODE_ATTR lcd_bmp_part(const struct bitmap* bm, int src_x, int src_y,
|
|
int x, int y, int width, int height)
|
|
{
|
|
int bitmap_stride = LCD_FBSTRIDE(bm->width, bm->height);
|
|
if (bm->format == FORMAT_MONO)
|
|
lcd_mono_bitmap_part(bm->data, src_x, src_y, bm->width, x, y, width, height);
|
|
else if (bm->alpha_offset > 0)
|
|
lcd_alpha_bitmap_part_mix((fb_data*)bm->data, bm->data+bm->alpha_offset,
|
|
src_x, src_y, x, y, width, height,
|
|
bitmap_stride, ALIGN_UP(bm->width, 2));
|
|
else
|
|
lcd_bitmap_transparent_part((fb_data*)bm->data,
|
|
src_x, src_y, bitmap_stride, x, y, width, height);
|
|
}
|
|
|
|
/* Draw a native bitmap with alpha channel */
|
|
void ICODE_ATTR lcd_bmp(const struct bitmap *bmp, int x, int y)
|
|
{
|
|
lcd_bmp_part(bmp, 0, 0, x, y, bmp->width, bmp->height);
|
|
}
|
|
|
|
/**
|
|
* |R| |1.000000 -0.000001 1.402000| |Y'|
|
|
* |G| = |1.000000 -0.334136 -0.714136| |Pb|
|
|
* |B| |1.000000 1.772000 0.000000| |Pr|
|
|
* Scaled, normalized, rounded and tweaked to yield RGB 565:
|
|
* |R| |74 0 101| |Y' - 16| >> 9
|
|
* |G| = |74 -24 -51| |Cb - 128| >> 8
|
|
* |B| |74 128 0| |Cr - 128| >> 9
|
|
*/
|
|
#define YFAC (74)
|
|
#define RVFAC (101)
|
|
#define GUFAC (-24)
|
|
#define GVFAC (-51)
|
|
#define BUFAC (128)
|
|
|
|
static inline int clamp(int val, int min, int max)
|
|
{
|
|
if (val < min)
|
|
val = min;
|
|
else if (val > max)
|
|
val = max;
|
|
return val;
|
|
}
|
|
|
|
#ifndef _WIN32
|
|
/*
|
|
* weak attribute doesn't work for win32 as of gcc 4.6.2 and binutils 2.21.52
|
|
* When building win32 simulators, we won't be using an optimized version of
|
|
* lcd_blit_yuv(), so just don't use the weak attribute.
|
|
*/
|
|
__attribute__((weak))
|
|
#endif
|
|
void lcd_yuv_set_options(unsigned options)
|
|
{
|
|
(void)options;
|
|
}
|
|
|
|
/* Draw a partial YUV colour bitmap */
|
|
#ifndef _WIN32
|
|
__attribute__((weak))
|
|
#endif
|
|
void lcd_blit_yuv(unsigned char * const src[3],
|
|
int src_x, int src_y, int stride,
|
|
int x, int y, int width, int height)
|
|
{
|
|
const unsigned char *ysrc, *usrc, *vsrc;
|
|
int linecounter;
|
|
fb_data *dst, *row_end;
|
|
long z;
|
|
|
|
/* width and height must be >= 2 and an even number */
|
|
width &= ~1;
|
|
linecounter = height >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst = FBADDR(x, y);
|
|
row_end = dst + width;
|
|
#else
|
|
dst = FBADDR(LCD_WIDTH - y - 1, x);
|
|
row_end = dst + LCD_WIDTH * width;
|
|
#endif
|
|
|
|
z = stride * src_y;
|
|
ysrc = src[0] + z + src_x;
|
|
usrc = src[1] + (z >> 2) + (src_x >> 1);
|
|
vsrc = src[2] + (usrc - src[1]);
|
|
|
|
/* stride => amount to jump from end of last row to start of next */
|
|
stride -= width;
|
|
|
|
/* upsampling, YUV->RGB conversion and reduction to RGB565 in one go */
|
|
|
|
do
|
|
{
|
|
do
|
|
{
|
|
int y, cb, cr, rv, guv, bu, r, g, b;
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
cb = *usrc++ - 128;
|
|
cr = *vsrc++ - 128;
|
|
|
|
rv = RVFAC*cr;
|
|
guv = GUFAC*cb + GVFAC*cr;
|
|
bu = BUFAC*cb;
|
|
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
}
|
|
while (dst < row_end);
|
|
|
|
ysrc += stride;
|
|
usrc -= width >> 1;
|
|
vsrc -= width >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
row_end += LCD_WIDTH;
|
|
dst += LCD_WIDTH - width;
|
|
#else
|
|
row_end -= 1;
|
|
dst -= LCD_WIDTH*width + 1;
|
|
#endif
|
|
|
|
do
|
|
{
|
|
int y, cb, cr, rv, guv, bu, r, g, b;
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
cb = *usrc++ - 128;
|
|
cr = *vsrc++ - 128;
|
|
|
|
rv = RVFAC*cr;
|
|
guv = GUFAC*cb + GVFAC*cr;
|
|
bu = BUFAC*cb;
|
|
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
|
|
y = YFAC*(*ysrc++ - 16);
|
|
r = y + rv;
|
|
g = y + guv;
|
|
b = y + bu;
|
|
|
|
if ((unsigned)(r | g | b) > 64*256-1)
|
|
{
|
|
r = clamp(r, 0, 64*256-1);
|
|
g = clamp(g, 0, 64*256-1);
|
|
b = clamp(b, 0, 64*256-1);
|
|
}
|
|
|
|
*dst = FB_RGBPACK(r >> 6, g >> 6, b >> 6);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
dst++;
|
|
#else
|
|
dst += LCD_WIDTH;
|
|
#endif
|
|
}
|
|
while (dst < row_end);
|
|
|
|
ysrc += stride;
|
|
usrc += stride >> 1;
|
|
vsrc += stride >> 1;
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
row_end += LCD_WIDTH;
|
|
dst += LCD_WIDTH - width;
|
|
#else
|
|
row_end -= 1;
|
|
dst -= LCD_WIDTH*width + 1;
|
|
#endif
|
|
}
|
|
while (--linecounter > 0);
|
|
|
|
#if LCD_WIDTH >= LCD_HEIGHT
|
|
lcd_update_rect(x, y, width, height);
|
|
#else
|
|
lcd_update_rect(LCD_WIDTH - y - height, x, height, width);
|
|
#endif
|
|
}
|
|
|
|
/* Fill a rectangle with a gradient. This function draws only the partial
|
|
* gradient. It assumes the original gradient is src_height high and skips
|
|
* the first few rows. This is useful for drawing only the bottom half of
|
|
* a full gradient.
|
|
*
|
|
* height == src_height and row_skip == 0 will draw the full gradient
|
|
*
|
|
* x, y, width, height - dimensions describing the rectangle
|
|
* start_rgb - beginning color of the gradient
|
|
* end_rgb - end color of the gradient
|
|
* src_height - assumed original height (only height rows will be drawn)
|
|
* row_skip - how many rows of the original gradient to skip
|
|
*/
|
|
void lcd_gradient_fillrect_part(int x, int y, int width, int height,
|
|
unsigned start_rgb, unsigned end_rgb, int src_height, int row_skip)
|
|
{
|
|
int old_pattern = lcd_current_viewport->fg_pattern;
|
|
int step_mul, i;
|
|
int x1, x2;
|
|
x1 = x;
|
|
x2 = x + width;
|
|
|
|
if (height <= 0) return;
|
|
|
|
step_mul = (1 << 16) / src_height;
|
|
int h_r = RGB_UNPACK_RED(start_rgb);
|
|
int h_g = RGB_UNPACK_GREEN(start_rgb);
|
|
int h_b = RGB_UNPACK_BLUE(start_rgb);
|
|
int rstep = (h_r - RGB_UNPACK_RED(end_rgb)) * step_mul;
|
|
int gstep = (h_g - RGB_UNPACK_GREEN(end_rgb)) * step_mul;
|
|
int bstep = (h_b - RGB_UNPACK_BLUE(end_rgb)) * step_mul;
|
|
h_r = (h_r << 16) + (1 << 15);
|
|
h_g = (h_g << 16) + (1 << 15);
|
|
h_b = (h_b << 16) + (1 << 15);
|
|
|
|
if (row_skip > 0)
|
|
{
|
|
h_r -= rstep * row_skip;
|
|
h_g -= gstep * row_skip;
|
|
h_b -= bstep * row_skip;
|
|
}
|
|
|
|
for(i = y; i < y + height; i++) {
|
|
lcd_current_viewport->fg_pattern = LCD_RGBPACK(h_r >> 16, h_g >> 16, h_b >> 16);
|
|
lcd_hline(x1, x2, i);
|
|
h_r -= rstep;
|
|
h_g -= gstep;
|
|
h_b -= bstep;
|
|
}
|
|
|
|
lcd_current_viewport->fg_pattern = old_pattern;
|
|
}
|
|
|
|
/* Fill a rectangle with a gradient. The gradient's color will fade from
|
|
* start_rgb to end_rgb over the height of the rectangle
|
|
*
|
|
* x, y, width, height - dimensions describing the rectangle
|
|
* start_rgb - beginning color of the gradient
|
|
* end_rgb - end color of the gradient
|
|
*/
|
|
void lcd_gradient_fillrect(int x, int y, int width, int height,
|
|
unsigned start_rgb, unsigned end_rgb)
|
|
{
|
|
lcd_gradient_fillrect_part(x, y, width, height, start_rgb, end_rgb, height, 0);
|
|
}
|