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#include <drivers/uart.h>
#include <globals.h>
#include <graphics/glyphs.h>
#include <graphics/lfb.h>
#include <graphics/mbox.h>
#include <lib/strings.h>
unsigned char *lfb; /* raw frame buffer address */
/**
* Set screen resolution
*/
void lfb_init(unsigned long w, unsigned long h)
{
mbox[0] = 35*4;
mbox[1] = MBOX_REQUEST;
mbox[2] = 0x48003; //set phy wh
mbox[3] = 8;
mbox[4] = 8;
mbox[5] = w; //FrameBufferInfo.width
mbox[6] = h; //FrameBufferInfo.height
mbox[7] = 0x48004; //set virt wh
mbox[8] = 8;
mbox[9] = 8;
mbox[10] = w; //FrameBufferInfo.virtual_width
mbox[11] = h; //FrameBufferInfo.virtual_height
mbox[12] = 0x48009; //set virt offset
mbox[13] = 8;
mbox[14] = 8;
mbox[15] = 0; //FrameBufferInfo.x_offset
mbox[16] = 0; //FrameBufferInfo.y.offset
mbox[17] = 0x48005; //set depth
mbox[18] = 4;
mbox[19] = 4;
mbox[20] = 32; //FrameBufferInfo.depth
mbox[21] = 0x48006; //set pixel order
mbox[22] = 4;
mbox[23] = 4;
mbox[24] = 1; //RGB, not BGR preferably
mbox[25] = 0x40001; //get framebuffer, gets alignment on request
mbox[26] = 8;
mbox[27] = 8;
mbox[28] = 4096; //FrameBufferInfo.pointer
mbox[29] = 0; //FrameBufferInfo.size
mbox[30] = 0x40008; //get pitch
mbox[31] = 4;
mbox[32] = 4;
mbox[33] = 0; //FrameBufferInfo.pitch
mbox[34] = MBOX_TAG_LAST;
//this might not return exactly what we asked for, could be
//the closest supported resolution instead
if(mbox_call(MBOX_CH_PROP) && mbox[20]==32 && mbox[28]!=0) {
mbox[28]&=0x3FFFFFFF; //convert GPU address to ARM address
gwidth=mbox[5]; //get actual physical width
gheight=mbox[6]; //get actual physical height
gpitch=mbox[33]; //get number of bytes per line
gisrgb=mbox[24]; //get the actual channel order
lfb=(void*)((unsigned long)mbox[28]);
} else {
uart_string("Unable to set screen resolution to 1024x768x32\n");
}
}
void clear_screen(void)
{
unsigned char *ptr=lfb;
for(unsigned int y = 0; y < gheight; y++) {
for(unsigned int x = 0; x < gwidth; x++) {
*(unsigned int*)ptr = 0x000000;
ptr += 4;
}
}
}
/**
* Show a picture
*/
void lfb_showpicture(void)
{
clear_screen();
#define FWIDTH 240
#define FHEIGHT 80
draw_cbox(gwidth-FWIDTH, gheight-FHEIGHT*2, FWIDTH, FHEIGHT, 0x0057b7);
draw_cbox(gwidth-FWIDTH, gheight-FHEIGHT, FWIDTH, FHEIGHT, 0xffd700);
}
void draw_cpixel(unsigned int lx, unsigned int ly, unsigned int c)
{
unsigned char* ptr = lfb;
ptr += (gpitch*ly+lx*4);
*((unsigned int*)ptr) = gisrgb ? (unsigned int)((c&0xFF)<<16 | (c&0xFF00) | (c&0xFF0000)>>16) : c;
}
void draw_cbox(unsigned int lx, unsigned int ly, unsigned int dx, unsigned int dy, unsigned int c)
{
unsigned char* ptr = lfb;
ptr += (gpitch*ly+lx*4);
for(unsigned int y = 0; y < dy; y++) {
for(unsigned int x = 0; x < dx; x++) {
*((unsigned int*)ptr) = gisrgb ? (unsigned int)((c&0xFF)<<16 | (c&0xFF00) | (c&0xFF0000)>>16) : c;
ptr += 4;
}
ptr += gpitch - dx*4;
}
}
void draw_cbyte(unsigned int lx, unsigned int ly, unsigned char letter, unsigned int c)
{
unsigned int x, y;
unsigned char* ptr = lfb;
ptr += (gpitch*ly*GLYPH_Y+lx*4*GLYPH_X);
unsigned char ltr = (letter & 0xF) + 0x30;
if (ltr > 0x39) {
ltr += 7;
}
for(y=0; y<GLYPH_Y; y++) {
for(x=0; x<GLYPH_X; x++) {
if((0x80 >> ((GLYPH_X-1)-x)) & font[ltr][y]) {
*((unsigned int*)ptr) = gisrgb ? (unsigned int)((c&0xFF)<<16 | (c&0xFF00) | (c&0xFF0000)>>16) : c;
} else {
*((unsigned int*)ptr) = 0x000000;
}
ptr += 4;
}
ptr += gpitch - GLYPH_X*4;
}
}
void draw_byte(unsigned int lx, unsigned int ly, unsigned char letter)
{
draw_cbyte(lx, ly, letter, 0xFFFFFF);
}
void draw_cletter(unsigned int lx, unsigned int ly, unsigned char letter, unsigned int c)
{
unsigned int x, y;
unsigned char* ptr = lfb;
ptr += (gpitch*ly*GLYPH_Y+lx*4*GLYPH_X);
unsigned char ltr = letter & 0x7F;
for(y=0; y<GLYPH_Y; y++) {
for(x=0; x<GLYPH_X; x++) {
if((0x80 >> ((GLYPH_X-1)-x)) & font[ltr][y]) {
*((unsigned int*)ptr) = gisrgb ? (unsigned int)((c&0xFF)<<16 | (c&0xFF00) | (c&0xFF0000)>>16) : c;
} else {
*((unsigned int*)ptr) = 0x000000;
}
ptr += 4;
}
ptr += gpitch - GLYPH_X*4;
}
}
void draw_letter(unsigned int lx, unsigned int ly, unsigned char letter)
{
draw_cletter(lx, ly, letter, 0xFFFFFF);
}
void draw_cstring(unsigned int lx, unsigned int ly, char* s, unsigned int c)
{
unsigned int x = lx % GG_MAX_X, y = ly % GG_MAX_Y;
unsigned int idx = 0;
while(s[idx] != 0) {
draw_cletter(x++, y, s[idx++], c);
if (x > GG_MAX_X) {
y += 1;
x = 0;
}
// CHECK Y EVENTUALLY
}
}
void draw_string(unsigned int lx, unsigned int ly, char* s)
{
draw_cstring(lx, ly, s, 0xFFFFFF);
}
void draw_chex32(unsigned int lx, unsigned int ly, unsigned long val, unsigned int c)
{
unsigned int x = lx % GG_MAX_X, y = ly % GG_MAX_Y;
for(unsigned int i = 0; i < GLYPH_X; i++) {
draw_cbyte(x++, y, 0xF & (val >> ((GLYPH_X-1)-i)*4), c);
if (x > GG_MAX_X) {
y += 1;
x = 0;
}
// CHECK Y EVENTUALLY
}
}
void draw_hex32(unsigned int lx, unsigned int ly, unsigned long val)
{
draw_chex32(lx, ly, val, 0xFFFFFF);
}
unsigned long draw_cu10(unsigned int lx, unsigned int ly, unsigned long val, unsigned int c)
{
string_t vals = u32_to_str(val);
unsigned long len = strlen(vals);
draw_cstring(lx, ly, vals, c);
return len;
}
unsigned long draw_u10(unsigned int lx, unsigned int ly, unsigned long val)
{
return draw_cu10(lx, ly, val, 0xFFFFFF);
}
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