Merge remote-tracking branch 'origin/lineage-21.0' into v1-u (08d620ae) · Commits · e / os / android_bootable_recovery

minui/graphics_fbdev.cpp

+50 −37

Original line number	Diff line number	Diff line
		@@ -69,21 +69,20 @@ void MinuiBackendFbdev::SetDisplayedFramebuffer(size_t n) {
		}

		GRSurface* MinuiBackendFbdev::Init() {
		android::base::unique_fd fd(open("/dev/graphics/fb0", O_RDWR \| O_CLOEXEC));
		if (fd == -1) {
		perror("cannot open fb0");
		return nullptr;
		}

		fb_fix_screeninfo fi;
		void* bits = nullptr;
		uint8_t fb_count = 0;
		std::string fb_path = "/dev/graphics/fb0";
		android::base::unique_fd fd(open(fb_path.c_str(), O_RDWR \| O_CLOEXEC));
		while (fd != -1) {
		if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
		perror("failed to get fb0 info");
		return nullptr;
		perror("failed to get fb info");
		goto next_fb;
		}

		if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
		perror("failed to get fb0 info");
		return nullptr;
		perror("failed to get fb info");
		goto next_fb;
		}

		// We print this out for informational purposes only, but
		@@ -98,17 +97,31 @@ GRSurface* MinuiBackendFbdev::Init() {
		// (ie, BGRX, or 565), patches welcome...

		printf(
		"fb0 reports (possibly inaccurate):\n"
		"fb%d reports (possibly inaccurate):\n"
		" vi.bits_per_pixel = %d\n"
		" vi.red.offset = %3d .length = %3d\n"
		" vi.green.offset = %3d .length = %3d\n"
		" vi.blue.offset = %3d .length = %3d\n",
		vi.bits_per_pixel, vi.red.offset, vi.red.length, vi.green.offset, vi.green.length,
		vi.blue.offset, vi.blue.length);
		fb_count, vi.bits_per_pixel, vi.red.offset, vi.red.length, vi.green.offset,
		vi.green.length, vi.blue.offset, vi.blue.length);

		void* bits = mmap(0, fi.smem_len, PROT_READ \| PROT_WRITE, MAP_SHARED, fd, 0);
		bits = mmap(0, fi.smem_len, PROT_READ \| PROT_WRITE, MAP_SHARED, fd, 0);
		if (bits == MAP_FAILED) {
		perror("failed to mmap framebuffer");
		goto next_fb;
		}

		// Found a valid fb
		break;

		next_fb:
		fb_count++;
		fb_path.replace(fb_path.length()-1, 1, std::to_string(fb_count));
		fd.reset(open(fb_path.c_str(), O_RDWR \| O_CLOEXEC));
		}

		if (fd == -1) {
		perror("cannot open any framebuffer");
		return nullptr;
		}