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/*
* NeXT Cube/Station Framebuffer Emulation
*
* Copyright (c) 2011 Bryce Lanham
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "ui/console.h"
#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "hw/display/framebuffer.h"
#include "ui/pixel_ops.h"
#include "hw/m68k/next-cube.h"
#define NEXTFB(obj) OBJECT_CHECK(NeXTFbState, (obj), TYPE_NEXTFB)
struct NeXTFbState {
SysBusDevice parent_obj;
MemoryRegion fb_mr;
MemoryRegionSection fbsection;
QemuConsole *con;
uint32_t cols;
uint32_t rows;
int invalidate;
};
typedef struct NeXTFbState NeXTFbState;
static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s,
int width, int pitch)
{
NeXTFbState *nfbstate = NEXTFB(opaque);
static const uint32_t pal[4] = {
0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000
};
uint32_t *buf = (uint32_t *)d;
int i = 0;
for (i = 0; i < nfbstate->cols / 4; i++) {
int j = i * 4;
uint8_t src = s[i];
buf[j + 3] = pal[src & 0x3];
src >>= 2;
buf[j + 2] = pal[src & 0x3];
src >>= 2;
buf[j + 1] = pal[src & 0x3];
src >>= 2;
buf[j + 0] = pal[src & 0x3];
}
}
static void nextfb_update(void *opaque)
{
NeXTFbState *s = NEXTFB(opaque);
int dest_width = 4;
int src_width;
int first = 0;
int last = 0;
DisplaySurface *surface = qemu_console_surface(s->con);
src_width = s->cols / 4 + 8;
dest_width = s->cols * 4;
if (s->invalidate) {
framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0,
s->cols, src_width);
s->invalidate = 0;
}
framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows,
src_width, dest_width, 0, 1, nextfb_draw_line,
s, &first, &last);
dpy_gfx_update(s->con, 0, 0, s->cols, s->rows);
}
static void nextfb_invalidate(void *opaque)
{
NeXTFbState *s = NEXTFB(opaque);
s->invalidate = 1;
}
static const GraphicHwOps nextfb_ops = {
.invalidate = nextfb_invalidate,
.gfx_update = nextfb_update,
};
static void nextfb_realize(DeviceState *dev, Error **errp)
{
NeXTFbState *s = NEXTFB(dev);
memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100,
&error_fatal);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr);
s->invalidate = 1;
s->cols = 1120;
s->rows = 832;
s->con = graphic_console_init(dev, 0, &nextfb_ops, s);
qemu_console_resize(s->con, s->cols, s->rows);
}
static void nextfb_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
dc->realize = nextfb_realize;
/* Note: This device does not any state that we have to reset or migrate */
}
static const TypeInfo nextfb_info = {
.name = TYPE_NEXTFB,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(NeXTFbState),
.class_init = nextfb_class_init,
};
static void nextfb_register_types(void)
{
type_register_static(&nextfb_info);
}
type_init(nextfb_register_types)
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