minui: Move graphics_{adf,drm,fbdev} into classes.
This CL defines minui_backend as an interface, and expresses the three
backends (adf, drm and fbdev) as subclasses to the interface.
Test: 'Run graphics test' on N9, Pixel C and N5X.
Change-Id: I0e23951c7b2e2ff918957a8d9fc8b0085b6e5952
diff --git a/minui/graphics_fbdev.cpp b/minui/graphics_fbdev.cpp
index dd4c9d4..746f42a 100644
--- a/minui/graphics_fbdev.cpp
+++ b/minui/graphics_fbdev.cpp
@@ -14,6 +14,8 @@
* limitations under the License.
*/
+#include "graphics_fbdev.h"
+
#include <fcntl.h>
#include <linux/fb.h>
#include <stdio.h>
@@ -25,40 +27,15 @@
#include <unistd.h>
#include "minui/minui.h"
-#include "graphics.h"
-static GRSurface* fbdev_init(minui_backend*);
-static GRSurface* fbdev_flip(minui_backend*);
-static void fbdev_blank(minui_backend*, bool);
-static void fbdev_exit(minui_backend*);
+MinuiBackendFbdev::MinuiBackendFbdev() : gr_draw(nullptr), fb_fd(-1) {}
-static GRSurface gr_framebuffer[2];
-static bool double_buffered;
-static GRSurface* gr_draw = nullptr;
-static int displayed_buffer;
-
-static fb_var_screeninfo vi;
-static int fb_fd = -1;
-
-static minui_backend my_backend = {
- .init = fbdev_init,
- .flip = fbdev_flip,
- .blank = fbdev_blank,
- .exit = fbdev_exit,
-};
-
-minui_backend* open_fbdev() {
- return &my_backend;
-}
-
-static void fbdev_blank(minui_backend* backend __unused, bool blank) {
+void MinuiBackendFbdev::Blank(bool blank) {
int ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
- if (ret < 0) {
- perror("ioctl(): blank");
- }
+ if (ret < 0) perror("ioctl(): blank");
}
-static void set_displayed_framebuffer(unsigned n) {
+void MinuiBackendFbdev::SetDisplayedFramebuffer(unsigned n) {
if (n > 1 || !double_buffered) return;
vi.yres_virtual = gr_framebuffer[0].height * 2;
@@ -70,7 +47,7 @@
displayed_buffer = n;
}
-static GRSurface* fbdev_init(minui_backend* backend) {
+GRSurface* MinuiBackendFbdev::Init() {
int fd = open("/dev/graphics/fb0", O_RDWR);
if (fd == -1) {
perror("cannot open fb0");
@@ -154,23 +131,23 @@
memset(gr_draw->data, 0, gr_draw->height * gr_draw->row_bytes);
fb_fd = fd;
- set_displayed_framebuffer(0);
+ SetDisplayedFramebuffer(0);
printf("framebuffer: %d (%d x %d)\n", fb_fd, gr_draw->width, gr_draw->height);
- fbdev_blank(backend, true);
- fbdev_blank(backend, false);
+ Blank(true);
+ Blank(false);
return gr_draw;
}
-static GRSurface* fbdev_flip(minui_backend* backend __unused) {
+GRSurface* MinuiBackendFbdev::Flip() {
if (double_buffered) {
// Change gr_draw to point to the buffer currently displayed,
// then flip the driver so we're displaying the other buffer
// instead.
gr_draw = gr_framebuffer + displayed_buffer;
- set_displayed_framebuffer(1 - displayed_buffer);
+ SetDisplayedFramebuffer(1 - displayed_buffer);
} else {
// Copy from the in-memory surface to the framebuffer.
memcpy(gr_framebuffer[0].data, gr_draw->data, gr_draw->height * gr_draw->row_bytes);
@@ -178,7 +155,7 @@
return gr_draw;
}
-static void fbdev_exit(minui_backend* backend __unused) {
+MinuiBackendFbdev::~MinuiBackendFbdev() {
close(fb_fd);
fb_fd = -1;