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-rw-r--r--minui/graphics_fbdev.c229
1 files changed, 0 insertions, 229 deletions
diff --git a/minui/graphics_fbdev.c b/minui/graphics_fbdev.c
deleted file mode 100644
index 6df2726f5..000000000
--- a/minui/graphics_fbdev.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stdbool.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <fcntl.h>
-#include <stdio.h>
-
-#include <sys/cdefs.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-
-#include <linux/fb.h>
-#include <linux/kd.h>
-
-#include "minui.h"
-#include "graphics.h"
-
-static gr_surface fbdev_init(minui_backend*);
-static gr_surface fbdev_flip(minui_backend*);
-static void fbdev_blank(minui_backend*, bool);
-static void fbdev_exit(minui_backend*);
-
-static GRSurface gr_framebuffer[2];
-static bool double_buffered;
-static GRSurface* gr_draw = NULL;
-static int displayed_buffer;
-
-static struct 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)
-{
- int ret;
-
- ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
- if (ret < 0)
- perror("ioctl(): blank");
-}
-
-static void set_displayed_framebuffer(unsigned 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;
- if (ioctl(fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
- perror("active fb swap failed");
- }
- displayed_buffer = n;
-}
-
-static gr_surface fbdev_init(minui_backend* backend) {
- int fd;
- void *bits;
-
- struct fb_fix_screeninfo fi;
-
- fd = open("/dev/graphics/fb0", O_RDWR);
- if (fd < 0) {
- perror("cannot open fb0");
- return NULL;
- }
-
- if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
- perror("failed to get fb0 info");
- close(fd);
- return NULL;
- }
-
- if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
- perror("failed to get fb0 info");
- close(fd);
- return NULL;
- }
-
- // We print this out for informational purposes only, but
- // throughout we assume that the framebuffer device uses an RGBX
- // pixel format. This is the case for every development device I
- // have access to. For some of those devices (eg, hammerhead aka
- // Nexus 5), FBIOGET_VSCREENINFO *reports* that it wants a
- // different format (XBGR) but actually produces the correct
- // results on the display when you write RGBX.
- //
- // If you have a device that actually *needs* another pixel format
- // (ie, BGRX, or 565), patches welcome...
-
- printf("fb0 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);
-
- 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 NULL;
- }
-
- 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].data = bits;
- memset(gr_framebuffer[0].data, 0, gr_framebuffer[0].height * gr_framebuffer[0].row_bytes);
-
- /* check if we can use double buffering */
- if (vi.yres * fi.line_length * 2 <= fi.smem_len) {
- double_buffered = true;
-
- memcpy(gr_framebuffer+1, gr_framebuffer, sizeof(GRSurface));
- gr_framebuffer[1].data = gr_framebuffer[0].data +
- gr_framebuffer[0].height * gr_framebuffer[0].row_bytes;
-
- gr_draw = gr_framebuffer+1;
-
- } 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 = (GRSurface*) malloc(sizeof(GRSurface));
- memcpy(gr_draw, gr_framebuffer, sizeof(GRSurface));
- gr_draw->data = (unsigned char*) malloc(gr_draw->height * gr_draw->row_bytes);
- if (!gr_draw->data) {
- perror("failed to allocate in-memory surface");
- return NULL;
- }
- }
-
- memset(gr_draw->data, 0, gr_draw->height * gr_draw->row_bytes);
- fb_fd = fd;
- set_displayed_framebuffer(0);
-
- printf("framebuffer: %d (%d x %d)\n", fb_fd, gr_draw->width, gr_draw->height);
-
- fbdev_blank(backend, true);
- fbdev_blank(backend, false);
-
- return gr_draw;
-}
-
-static gr_surface fbdev_flip(minui_backend* backend __unused) {
- if (double_buffered) {
-#if defined(RECOVERY_BGRA)
- // In case of BGRA, do some byte swapping
- unsigned int idx;
- unsigned char tmp;
- unsigned char* ucfb_vaddr = (unsigned char*)gr_draw->data;
- for (idx = 0 ; idx < (gr_draw->height * gr_draw->row_bytes);
- idx += 4) {
- tmp = ucfb_vaddr[idx];
- ucfb_vaddr[idx ] = ucfb_vaddr[idx + 2];
- ucfb_vaddr[idx + 2] = tmp;
- }
-#endif
- // 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);
- } else {
- // Copy from the in-memory surface to the framebuffer.
-
-#if defined(RECOVERY_BGRA)
- unsigned int idx;
- unsigned char* ucfb_vaddr = (unsigned char*)gr_framebuffer[0].data;
- unsigned char* ucbuffer_vaddr = (unsigned char*)gr_draw->data;
- for (idx = 0 ; idx < (gr_draw->height * gr_draw->row_bytes); idx += 4) {
- ucfb_vaddr[idx ] = ucbuffer_vaddr[idx + 2];
- ucfb_vaddr[idx + 1] = ucbuffer_vaddr[idx + 1];
- ucfb_vaddr[idx + 2] = ucbuffer_vaddr[idx ];
- ucfb_vaddr[idx + 3] = ucbuffer_vaddr[idx + 3];
- }
-#else
- memcpy(gr_framebuffer[0].data, gr_draw->data,
- gr_draw->height * gr_draw->row_bytes);
-#endif
- }
- return gr_draw;
-}
-
-static void fbdev_exit(minui_backend* backend __unused) {
- close(fb_fd);
- fb_fd = -1;
-
- if (!double_buffered && gr_draw) {
- free(gr_draw->data);
- free(gr_draw);
- }
- gr_draw = NULL;
-}
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