acrn-hypervisor/devicemodel/core/gc.c

77 lines
1.4 KiB
C

#include <sys/cdefs.h>
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "gc.h"
struct gfx_ctx {
struct gfx_ctx_image *gc_image;
int raw;
};
struct gfx_ctx *
gc_init(int width, int height, void *fbaddr)
{
struct gfx_ctx *gc;
struct gfx_ctx_image *gc_image;
gc = calloc(1, sizeof(struct gfx_ctx));
assert(gc != NULL);
gc_image = calloc(1, sizeof(struct gfx_ctx_image));
assert(gc_image != NULL);
gc_image->width = width;
gc_image->height = height;
if (fbaddr) {
gc_image->data = fbaddr;
gc->raw = 1;
} else {
gc_image->data = calloc(width * height, sizeof(uint32_t));
gc->raw = 0;
}
gc->gc_image = gc_image;
return gc;
}
void
gc_set_fbaddr(struct gfx_ctx *gc, void *fbaddr)
{
gc->raw = 1;
if (gc->gc_image->data && gc->gc_image->data != fbaddr)
free(gc->gc_image->data);
gc->gc_image->data = fbaddr;
}
void
gc_resize(struct gfx_ctx *gc, int width, int height)
{
struct gfx_ctx_image *gc_image;
gc_image = gc->gc_image;
gc_image->width = width;
gc_image->height = height;
if (!gc->raw) {
gc_image->data = realloc(gc_image->data,
width * height * sizeof(uint32_t));
if (gc_image->data != NULL)
memset(gc_image->data, 0, width * height *
sizeof(uint32_t));
}
}
struct gfx_ctx_image *
gc_get_image(struct gfx_ctx *gc)
{
if (gc == NULL)
return NULL;
return gc->gc_image;
}