Split framebuffer functions into library

This commit is contained in:
2022-01-11 00:38:43 +01:00
parent 576a32d92f
commit 6c36d3dd40
11 changed files with 223 additions and 176 deletions

46
src/libmittos/Makefile Normal file
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@@ -0,0 +1,46 @@
ifeq ($(BUILDROOT),)
$(error BUILDROOT IS NOT SET!)
endif
CC := ${TARGET}-gcc
SRC := $(shell find -type f -name '*.[cS]*')
OBJ := $(patsubst %, %.o, $(basename $(basename $(SRC))))
HDR := $(shell find -type f -name '*.h')
CFLAGS := -Wall -Wextra -pedantic -ffreestanding -mcmodel=large -std=c2x
CFLAGS += -ggdb -O0
ASFLAGS += -ggdb
CPPFLAGS += -nostdinc -I include -I /opt/sysroot/usr/include
LDFLAGS := -nostdlib -r
libmittos.a: $(OBJ)
$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@
# Automatic dependency tracking
DEP := $(OBJ:.o=.d)
DEPFLAGS = -MT $@ -MMD -MP -MF $*.d
$(OBJ): CPPFLAGS += $(DEPFLAGS)
%.d: ;
DESTDIR ?= $(BUILDROOT)/sysroot
LIBDIR := $(DESTDIR)/usr/lib
INCDIR := $(DESTDIR)/usr/include/mittos
$(LIBDIR)/libmittos.a: libmittos.a
install -D $< $@
$(INCDIR)/%: include/%
mkdir -p $(INCDIR)
install -D $< $@
install: install-headers $(LIBDIR)/libmittos.a
install-headers: $(HDR:./include/%=$(INCDIR)/%)
clean:
rm -rf $(OBJ) $(DEP) libmittos.a
.PHONY: install install-headers
# Include automatic dependency rules
include $(DEP)

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@@ -0,0 +1,66 @@
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <graphics.h>
#define incptr(p, n) ((void *)(((uintptr_t)(p)) + (n)))
#include "termfont.inc"
void putpixel(gfx_context *ctx, uint64_t x, uint64_t y, uint32_t clr)
{
if(x >= ctx->width || y >= ctx->height) return;
uint64_t loc = \
y * ctx->pitch + \
x * ctx->bpp;
uint32_t *fb = incptr(ctx->buffer, loc);
*fb = clr;
}
void putCharacter(gfx_context *ctx, uint64_t x, uint64_t y, uint32_t clr_fg, uint32_t clr_bg, char c)
{
char *chr = c ? font[(int)c-0x20]: font[0];
if(x >= ctx->width || y >= ctx->height) return;
uint64_t loc = \
y * ctx->pitch + \
x * ctx->bpp;
uint32_t *fb = incptr(ctx->buffer, loc);
for(int row = 0; row < 16; row++)
{
for(int col = 0; col < 8; col++)
{
fb[col] = ((chr[row]>>(7-col))&0x1) ? clr_fg : clr_bg;
}
fb = incptr(fb, ctx->pitch);
}
}
void flip(gfx_context *ctx)
{
for(uint64_t y = 0; y < ctx->height; y++)
{
memcpy(
incptr(ctx->addr, y*ctx->pitch),
incptr(ctx->buffer, y*ctx->pitch),
ctx->width*ctx->bpp);
}
}
gfx_context *framebuffer_make_subcontext(gfx_context *ctx, uint64_t x, uint64_t y, uint64_t width, uint64_t height)
{
gfx_context *out = malloc(sizeof(gfx_context));
uint64_t loc = \
y * ctx->pitch + \
x * ctx->bpp;
out->width = width;
out->height = height;
out->bpp = ctx->bpp;
out->pitch = ctx->pitch;
out->addr = incptr(ctx->addr, loc);
out->size = ctx->pitch * (height);
out->buffer = calloc(1, out->size);
return out;
}

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@@ -0,0 +1,98 @@
// Font from https://github.com/atextor/unifont
char font[95][16] = {
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x08, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x22, 0x22, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x12, 0x12, 0x12, 0x7E, 0x24, 0x24, 0x7E, 0x48, 0x48, 0x48, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x08, 0x3E, 0x49, 0x48, 0x38, 0x0E, 0x09, 0x49, 0x3E, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x31, 0x4A, 0x4A, 0x34, 0x08, 0x08, 0x16, 0x29, 0x29, 0x46, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x39, 0x45, 0x42, 0x46, 0x39, 0x00, 0x00},
{0x00, 0x00, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x04, 0x08, 0x08, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x08, 0x08, 0x04, 0x00},
{0x00, 0x00, 0x00, 0x20, 0x10, 0x10, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x10, 0x10, 0x20, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x49, 0x2A, 0x1C, 0x2A, 0x49, 0x08, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x7F, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x08, 0x08, 0x10},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x04, 0x08, 0x08, 0x10, 0x10, 0x20, 0x40, 0x40, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x18, 0x24, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x24, 0x18, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x08, 0x18, 0x28, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x02, 0x0C, 0x10, 0x20, 0x40, 0x40, 0x7E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x02, 0x1C, 0x02, 0x02, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x04, 0x0C, 0x14, 0x24, 0x44, 0x44, 0x7E, 0x04, 0x04, 0x04, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7E, 0x40, 0x40, 0x40, 0x7C, 0x02, 0x02, 0x02, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x1C, 0x20, 0x40, 0x40, 0x7C, 0x42, 0x42, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7E, 0x02, 0x02, 0x04, 0x04, 0x04, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x3C, 0x42, 0x42, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x3E, 0x02, 0x02, 0x02, 0x04, 0x38, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x18, 0x08, 0x08, 0x10, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x20, 0x10, 0x08, 0x04, 0x08, 0x10, 0x20, 0x40, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x02, 0x04, 0x08, 0x08, 0x00, 0x08, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x1C, 0x22, 0x4A, 0x56, 0x52, 0x52, 0x52, 0x4E, 0x20, 0x1E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x18, 0x24, 0x24, 0x42, 0x42, 0x7E, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7C, 0x42, 0x42, 0x42, 0x7C, 0x42, 0x42, 0x42, 0x42, 0x7C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x40, 0x40, 0x40, 0x40, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x78, 0x44, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x44, 0x78, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7E, 0x40, 0x40, 0x40, 0x7C, 0x40, 0x40, 0x40, 0x40, 0x7E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7E, 0x40, 0x40, 0x40, 0x7C, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x40, 0x40, 0x4E, 0x42, 0x42, 0x46, 0x3A, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x7E, 0x42, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3E, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x1F, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x44, 0x44, 0x38, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x44, 0x48, 0x50, 0x60, 0x60, 0x50, 0x48, 0x44, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x7E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x66, 0x66, 0x5A, 0x5A, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x62, 0x62, 0x52, 0x52, 0x4A, 0x4A, 0x46, 0x46, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7C, 0x42, 0x42, 0x42, 0x7C, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x5A, 0x66, 0x3C, 0x03, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7C, 0x42, 0x42, 0x42, 0x7C, 0x48, 0x44, 0x44, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x40, 0x30, 0x0C, 0x02, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7F, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x41, 0x41, 0x41, 0x22, 0x22, 0x22, 0x14, 0x14, 0x08, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x5A, 0x5A, 0x66, 0x66, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x24, 0x24, 0x18, 0x18, 0x24, 0x24, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x41, 0x41, 0x22, 0x22, 0x14, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x7E, 0x02, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x40, 0x7E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x0E, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x0E, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x40, 0x40, 0x20, 0x10, 0x10, 0x08, 0x08, 0x04, 0x02, 0x02, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x70, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x70, 0x00},
{0x00, 0x00, 0x18, 0x24, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x00},
{0x00, 0x20, 0x10, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x02, 0x3E, 0x42, 0x42, 0x46, 0x3A, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x5C, 0x62, 0x42, 0x42, 0x42, 0x42, 0x62, 0x5C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x40, 0x40, 0x40, 0x40, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x02, 0x02, 0x02, 0x3A, 0x46, 0x42, 0x42, 0x42, 0x42, 0x46, 0x3A, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x7E, 0x40, 0x40, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x0C, 0x10, 0x10, 0x10, 0x7C, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x3A, 0x44, 0x44, 0x44, 0x38, 0x20, 0x3C, 0x42, 0x42, 0x3C},
{0x00, 0x00, 0x00, 0x40, 0x40, 0x40, 0x5C, 0x62, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x08, 0x08, 0x00, 0x18, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x04, 0x04, 0x00, 0x0C, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x48, 0x30},
{0x00, 0x00, 0x00, 0x00, 0x40, 0x40, 0x44, 0x48, 0x50, 0x60, 0x50, 0x48, 0x44, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x18, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x3E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0x49, 0x49, 0x49, 0x49, 0x49, 0x49, 0x49, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5C, 0x62, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5C, 0x62, 0x42, 0x42, 0x42, 0x42, 0x62, 0x5C, 0x40, 0x40},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3A, 0x46, 0x42, 0x42, 0x42, 0x42, 0x46, 0x3A, 0x02, 0x02},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5C, 0x62, 0x42, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x40, 0x30, 0x0C, 0x02, 0x42, 0x3C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x7C, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x0C, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x46, 0x3A, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x24, 0x24, 0x24, 0x18, 0x18, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x41, 0x49, 0x49, 0x49, 0x49, 0x49, 0x49, 0x36, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x42, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42, 0x42, 0x42, 0x42, 0x42, 0x26, 0x1A, 0x02, 0x02, 0x3C},
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x7E, 0x00, 0x00},
{0x00, 0x00, 0x00, 0x0C, 0x10, 0x10, 0x08, 0x08, 0x10, 0x10, 0x08, 0x08, 0x10, 0x10, 0x0C, 0x00},
{0x00, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08},
{0x00, 0x00, 0x00, 0x30, 0x08, 0x08, 0x10, 0x10, 0x08, 0x08, 0x10, 0x10, 0x08, 0x08, 0x30, 0x00},
{0x00, 0x00, 0x00, 0x31, 0x49, 0x46, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
};

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@@ -0,0 +1,19 @@
#pragma once
#include <stdlib.h>
typedef struct {
uint32_t width;
uint32_t height;
uint32_t bpp;
uint32_t pitch;
void *addr;
void *buffer;
size_t size;
} gfx_context;
#define RGB(r, g, b) (((uint32_t) (r<<16) + (g<<8) + (b)))
void putpixel(gfx_context *ctx, uint64_t x, uint64_t y, uint32_t clr);
void putCharacter(gfx_context *ctx, uint64_t x, uint64_t y, uint32_t clr_fg, uint32_t clr_bg, char c);
void flip(gfx_context *ctx);
gfx_context *framebuffer_make_subcontext(gfx_context *ctx, uint64_t x, uint64_t y, uint64_t width, uint64_t height);