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Diffstat (limited to 'minui/graphics_fbdev.cpp')
-rw-r--r--minui/graphics_fbdev.cpp81
1 files changed, 35 insertions, 46 deletions
diff --git a/minui/graphics_fbdev.cpp b/minui/graphics_fbdev.cpp
index f958d62d4..93e4420d3 100644
--- a/minui/graphics_fbdev.cpp
+++ b/minui/graphics_fbdev.cpp
@@ -26,21 +26,29 @@
#include <sys/types.h>
#include <unistd.h>
+#include <memory>
+
+#include <android-base/unique_fd.h>
+
#include "minui/minui.h"
-MinuiBackendFbdev::MinuiBackendFbdev() : gr_draw(nullptr), fb_fd(-1) {}
+std::unique_ptr<GRSurfaceFbdev> GRSurfaceFbdev::Create(int width, int height, int row_bytes,
+ int pixel_bytes) {
+ // Cannot use std::make_unique to access non-public ctor.
+ return std::unique_ptr<GRSurfaceFbdev>(new GRSurfaceFbdev(width, height, row_bytes, pixel_bytes));
+}
void MinuiBackendFbdev::Blank(bool blank) {
int ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
if (ret < 0) perror("ioctl(): blank");
}
-void MinuiBackendFbdev::SetDisplayedFramebuffer(unsigned n) {
+void MinuiBackendFbdev::SetDisplayedFramebuffer(size_t n) {
if (n > 1 || !double_buffered) return;
- vi.yres_virtual = gr_framebuffer[0].height * 2;
- vi.yoffset = n * gr_framebuffer[0].height;
- vi.bits_per_pixel = gr_framebuffer[0].pixel_bytes * 8;
+ vi.yres_virtual = gr_framebuffer[0]->height * 2;
+ vi.yoffset = n * gr_framebuffer[0]->height;
+ vi.bits_per_pixel = gr_framebuffer[0]->pixel_bytes * 8;
if (ioctl(fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
perror("active fb swap failed");
}
@@ -48,7 +56,7 @@ void MinuiBackendFbdev::SetDisplayedFramebuffer(unsigned n) {
}
GRSurface* MinuiBackendFbdev::Init() {
- int fd = open("/dev/graphics/fb0", O_RDWR);
+ android::base::unique_fd fd(open("/dev/graphics/fb0", O_RDWR));
if (fd == -1) {
perror("cannot open fb0");
return nullptr;
@@ -57,13 +65,11 @@ GRSurface* MinuiBackendFbdev::Init() {
fb_fix_screeninfo fi;
if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
perror("failed to get fb0 info");
- close(fd);
return nullptr;
}
if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
perror("failed to get fb0 info");
- close(fd);
return nullptr;
}
@@ -90,46 +96,41 @@ GRSurface* MinuiBackendFbdev::Init() {
void* bits = mmap(0, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (bits == MAP_FAILED) {
perror("failed to mmap framebuffer");
- close(fd);
return nullptr;
}
memset(bits, 0, fi.smem_len);
- gr_framebuffer[0].width = vi.xres;
- gr_framebuffer[0].height = vi.yres;
- gr_framebuffer[0].row_bytes = fi.line_length;
- gr_framebuffer[0].pixel_bytes = vi.bits_per_pixel / 8;
- gr_framebuffer[0].buffer_ = static_cast<uint8_t*>(bits);
- memset(gr_framebuffer[0].buffer_, 0, gr_framebuffer[0].height * gr_framebuffer[0].row_bytes);
+ gr_framebuffer[0] =
+ GRSurfaceFbdev::Create(vi.xres, vi.yres, fi.line_length, vi.bits_per_pixel / 8);
+ gr_framebuffer[0]->buffer_ = static_cast<uint8_t*>(bits);
+ memset(gr_framebuffer[0]->buffer_, 0, gr_framebuffer[0]->height * gr_framebuffer[0]->row_bytes);
+
+ gr_framebuffer[1] =
+ GRSurfaceFbdev::Create(gr_framebuffer[0]->width, gr_framebuffer[0]->height,
+ gr_framebuffer[0]->row_bytes, gr_framebuffer[0]->pixel_bytes);
/* check if we can use double buffering */
if (vi.yres * fi.line_length * 2 <= fi.smem_len) {
double_buffered = true;
- gr_framebuffer[1] = gr_framebuffer[0];
- gr_framebuffer[1].buffer_ =
- gr_framebuffer[0].buffer_ + gr_framebuffer[0].height * gr_framebuffer[0].row_bytes;
-
- gr_draw = gr_framebuffer + 1;
-
+ gr_framebuffer[1]->buffer_ =
+ gr_framebuffer[0]->buffer_ + gr_framebuffer[0]->height * gr_framebuffer[0]->row_bytes;
} else {
double_buffered = false;
- // Without double-buffering, we allocate RAM for a buffer to
- // draw in, and then "flipping" the buffer consists of a
- // memcpy from the buffer we allocated to the framebuffer.
-
- gr_draw = new GRSurfaceFbdev;
- *gr_draw = gr_framebuffer[0];
- gr_draw->buffer_ = new uint8_t[gr_draw->height * gr_draw->row_bytes];
+ // Without double-buffering, we allocate RAM for a buffer to draw in, and then "flipping" the
+ // buffer consists of a memcpy from the buffer we allocated to the framebuffer.
+ memory_buffer.resize(gr_framebuffer[1]->height * gr_framebuffer[1]->row_bytes);
+ gr_framebuffer[1]->buffer_ = memory_buffer.data();
}
+ gr_draw = gr_framebuffer[1].get();
memset(gr_draw->buffer_, 0, gr_draw->height * gr_draw->row_bytes);
- fb_fd = fd;
+ fb_fd = std::move(fd);
SetDisplayedFramebuffer(0);
- printf("framebuffer: %d (%d x %d)\n", fb_fd, gr_draw->width, gr_draw->height);
+ printf("framebuffer: %d (%d x %d)\n", fb_fd.get(), gr_draw->width, gr_draw->height);
Blank(true);
Blank(false);
@@ -139,25 +140,13 @@ GRSurface* MinuiBackendFbdev::Init() {
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;
+ // 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].get();
SetDisplayedFramebuffer(1 - displayed_buffer);
} else {
// Copy from the in-memory surface to the framebuffer.
- memcpy(gr_framebuffer[0].buffer_, gr_draw->buffer_, gr_draw->height * gr_draw->row_bytes);
+ memcpy(gr_framebuffer[0]->buffer_, gr_draw->buffer_, gr_draw->height * gr_draw->row_bytes);
}
return gr_draw;
}
-
-MinuiBackendFbdev::~MinuiBackendFbdev() {
- close(fb_fd);
- fb_fd = -1;
-
- if (!double_buffered && gr_draw) {
- delete[] gr_draw->buffer_;
- delete gr_draw;
- }
- gr_draw = nullptr;
-}