Update minuitwrp graphics in line with latest minui
Note: events.cpp is still old code renamed to cpp to make it
easier to call functions like gr_fb_width().
I had to modify AOSP fbdev code to provide a separate memory
surface for drawing to as drawing directly to the framebuffer
resulted in rendering taking about 5 times longer.
I also modified AOSP adf code to provide a separate memory surface
for drawing for the same performance reasons. The Nexus 9 supports
adf graphics.
Overlay graphics work on at least one device. Overlay provides a
separate memory buffer already so performance is good.
I do not have a drm device yet that I know of. I made some attempt
to update the drm code to determine the correct pixel format based
on the drm graphics format, but what is available in pixel flinger
and what is available in drm do not line up all that well. Reports
are that the Pixel C is using drm graphics, but performance is
slow, likely due to the use of a mmap instead of a memory buffyer.
Change-Id: Ibd45bccca6ac2cb826037aa9b2aa5065cf683eed
diff --git a/minuitwrp/graphics_drm.cpp b/minuitwrp/graphics_drm.cpp
new file mode 100644
index 0000000..9bbf7e9
--- /dev/null
+++ b/minuitwrp/graphics_drm.cpp
@@ -0,0 +1,492 @@
+/*
+ * Copyright (C) 2015 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 <drm_fourcc.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/cdefs.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "minui.h"
+#include "graphics.h"
+#include <pixelflinger/pixelflinger.h>
+
+#define ARRAY_SIZE(A) (sizeof(A)/sizeof(*(A)))
+
+struct drm_surface {
+ GRSurface base;
+ uint32_t fb_id;
+ uint32_t handle;
+};
+
+static drm_surface *drm_surfaces[2];
+static int current_buffer;
+
+static drmModeCrtc *main_monitor_crtc;
+static drmModeConnector *main_monitor_connector;
+
+static int drm_fd = -1;
+
+static void drm_disable_crtc(int drm_fd, drmModeCrtc *crtc) {
+ if (crtc) {
+ drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ 0, // fb_id
+ 0, 0, // x,y
+ NULL, // connectors
+ 0, // connector_count
+ NULL); // mode
+ }
+}
+
+static void drm_enable_crtc(int drm_fd, drmModeCrtc *crtc,
+ struct drm_surface *surface) {
+ int32_t ret;
+
+ ret = drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ surface->fb_id,
+ 0, 0, // x,y
+ &main_monitor_connector->connector_id,
+ 1, // connector_count
+ &main_monitor_crtc->mode);
+
+ if (ret)
+ printf("drmModeSetCrtc failed ret=%d\n", ret);
+}
+
+static void drm_blank(minui_backend* backend __unused, bool blank) {
+ if (blank)
+ drm_disable_crtc(drm_fd, main_monitor_crtc);
+ else
+ drm_enable_crtc(drm_fd, main_monitor_crtc,
+ drm_surfaces[current_buffer]);
+}
+
+static void drm_destroy_surface(struct drm_surface *surface) {
+ struct drm_gem_close gem_close;
+ int ret;
+
+ if(!surface)
+ return;
+
+ if (surface->base.data)
+ munmap(surface->base.data,
+ surface->base.row_bytes * surface->base.height);
+
+ if (surface->fb_id) {
+ ret = drmModeRmFB(drm_fd, surface->fb_id);
+ if (ret)
+ printf("drmModeRmFB failed ret=%d\n", ret);
+ }
+
+ if (surface->handle) {
+ memset(&gem_close, 0, sizeof(gem_close));
+ gem_close.handle = surface->handle;
+
+ ret = drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
+ if (ret)
+ printf("DRM_IOCTL_GEM_CLOSE failed ret=%d\n", ret);
+ }
+
+ free(surface);
+}
+
+static int drm_format_to_bpp(uint32_t format) {
+ switch(format) {
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_BGRA8888:
+ case DRM_FORMAT_RGBX8888:
+ case DRM_FORMAT_BGRX8888:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_XRGB8888:
+ return 32;
+ case DRM_FORMAT_RGB565:
+ return 16;
+ default:
+ printf("Unknown format %d\n", format);
+ return 32;
+ }
+}
+
+static drm_surface *drm_create_surface(int width, int height) {
+ struct drm_surface *surface;
+ struct drm_mode_create_dumb create_dumb;
+ uint32_t format;
+ __u32 base_format;
+ int ret;
+
+ surface = (struct drm_surface*)calloc(1, sizeof(*surface));
+ if (!surface) {
+ printf("Can't allocate memory\n");
+ return NULL;
+ }
+
+#if defined(RECOVERY_ABGR)
+ format = DRM_FORMAT_RGBA8888;
+ base_format = GGL_PIXEL_FORMAT_RGBA_8888;
+ printf("setting DRM_FORMAT_RGBA8888 and GGL_PIXEL_FORMAT_RGBA_8888\n");
+#elif defined(RECOVERY_BGRA)
+ format = DRM_FORMAT_ARGB8888;
+ base_format = GGL_PIXEL_FORMAT_BGRA_8888;
+ printf("setting DRM_FORMAT_ARGB8888 and GGL_PIXEL_FORMAT_BGRA_8888, GGL_PIXEL_FORMAT may not match!\n");
+#elif defined(RECOVERY_RGBA)
+ format = DRM_FORMAT_ABGR8888;
+ base_format = GGL_PIXEL_FORMAT_BGRA_8888;
+ printf("setting DRM_FORMAT_ABGR8888 and GGL_PIXEL_FORMAT_BGRA_8888, GGL_PIXEL_FORMAT may not match!\n");
+#elif defined(RECOVERY_RGBX)
+ format = DRM_FORMAT_XBGR8888;
+ base_format = GGL_PIXEL_FORMAT_BGRA_8888;
+ printf("setting DRM_FORMAT_XBGR8888 and GGL_PIXEL_FORMAT_BGRA_8888, GGL_PIXEL_FORMAT may not match!\n");
+#else
+ format = DRM_FORMAT_RGB565;
+ base_format = GGL_PIXEL_FORMAT_BGRA_8888;
+ printf("setting DRM_FORMAT_RGB565 and GGL_PIXEL_FORMAT_RGB_565\n");
+#endif
+
+ memset(&create_dumb, 0, sizeof(create_dumb));
+ create_dumb.height = height;
+ create_dumb.width = width;
+ create_dumb.bpp = drm_format_to_bpp(format);
+ create_dumb.flags = 0;
+
+ ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
+ if (ret) {
+ printf("DRM_IOCTL_MODE_CREATE_DUMB failed ret=%d\n",ret);
+ drm_destroy_surface(surface);
+ return NULL;
+ }
+ surface->handle = create_dumb.handle;
+
+ uint32_t handles[4], pitches[4], offsets[4];
+
+ handles[0] = surface->handle;
+ pitches[0] = create_dumb.pitch;
+ offsets[0] = 0;
+
+ ret = drmModeAddFB2(drm_fd, width, height,
+ format, handles, pitches, offsets,
+ &(surface->fb_id), 0);
+ if (ret) {
+ printf("drmModeAddFB2 failed ret=%d\n", ret);
+ drm_destroy_surface(surface);
+ return NULL;
+ }
+
+ struct drm_mode_map_dumb map_dumb;
+ memset(&map_dumb, 0, sizeof(map_dumb));
+ map_dumb.handle = create_dumb.handle;
+ ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
+ if (ret) {
+ printf("DRM_IOCTL_MODE_MAP_DUMB failed ret=%d\n",ret);
+ drm_destroy_surface(surface);
+ return NULL;;
+ }
+
+ surface->base.height = height;
+ surface->base.width = width;
+ surface->base.row_bytes = create_dumb.pitch;
+ surface->base.pixel_bytes = create_dumb.bpp / 8;
+ surface->base.format = base_format;
+ surface->base.data = (unsigned char*)
+ mmap(NULL,
+ surface->base.height * surface->base.row_bytes,
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ drm_fd, map_dumb.offset);
+ if (surface->base.data == MAP_FAILED) {
+ perror("mmap() failed");
+ drm_destroy_surface(surface);
+ return NULL;
+ }
+
+ return surface;
+}
+
+static drmModeCrtc *find_crtc_for_connector(int fd,
+ drmModeRes *resources,
+ drmModeConnector *connector) {
+ int i, j;
+ drmModeEncoder *encoder;
+ int32_t crtc;
+
+ /*
+ * Find the encoder. If we already have one, just use it.
+ */
+ if (connector->encoder_id)
+ encoder = drmModeGetEncoder(fd, connector->encoder_id);
+ else
+ encoder = NULL;
+
+ if (encoder && encoder->crtc_id) {
+ crtc = encoder->crtc_id;
+ drmModeFreeEncoder(encoder);
+ return drmModeGetCrtc(fd, crtc);
+ }
+
+ /*
+ * Didn't find anything, try to find a crtc and encoder combo.
+ */
+ crtc = -1;
+ for (i = 0; i < connector->count_encoders; i++) {
+ encoder = drmModeGetEncoder(fd, connector->encoders[i]);
+
+ if (encoder) {
+ for (j = 0; j < resources->count_crtcs; j++) {
+ if (!(encoder->possible_crtcs & (1 << j)))
+ continue;
+ crtc = resources->crtcs[j];
+ break;
+ }
+ if (crtc >= 0) {
+ drmModeFreeEncoder(encoder);
+ return drmModeGetCrtc(fd, crtc);
+ }
+ }
+ }
+
+ return NULL;
+}
+
+static drmModeConnector *find_used_connector_by_type(int fd,
+ drmModeRes *resources,
+ unsigned type) {
+ int i;
+ for (i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector *connector;
+
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->connector_type == type) &&
+ (connector->connection == DRM_MODE_CONNECTED) &&
+ (connector->count_modes > 0))
+ return connector;
+
+ drmModeFreeConnector(connector);
+ }
+ }
+ return NULL;
+}
+
+static drmModeConnector *find_first_connected_connector(int fd,
+ drmModeRes *resources) {
+ int i;
+ for (i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector *connector;
+
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->count_modes > 0) &&
+ (connector->connection == DRM_MODE_CONNECTED))
+ return connector;
+
+ drmModeFreeConnector(connector);
+ }
+ }
+ return NULL;
+}
+
+static drmModeConnector *find_main_monitor(int fd, drmModeRes *resources,
+ uint32_t *mode_index) {
+ unsigned i = 0;
+ int modes;
+ /* Look for LVDS/eDP/DSI connectors. Those are the main screens. */
+ unsigned kConnectorPriority[] = {
+ DRM_MODE_CONNECTOR_LVDS,
+ DRM_MODE_CONNECTOR_eDP,
+ DRM_MODE_CONNECTOR_DSI,
+ };
+
+ drmModeConnector *main_monitor_connector = NULL;
+ do {
+ main_monitor_connector = find_used_connector_by_type(fd,
+ resources,
+ kConnectorPriority[i]);
+ i++;
+ } while (!main_monitor_connector && i < ARRAY_SIZE(kConnectorPriority));
+
+ /* If we didn't find a connector, grab the first one that is connected. */
+ if (!main_monitor_connector)
+ main_monitor_connector =
+ find_first_connected_connector(fd, resources);
+
+ /* If we still didn't find a connector, give up and return. */
+ if (!main_monitor_connector)
+ return NULL;
+
+ *mode_index = 0;
+ for (modes = 0; modes < main_monitor_connector->count_modes; modes++) {
+ if (main_monitor_connector->modes[modes].type &
+ DRM_MODE_TYPE_PREFERRED) {
+ *mode_index = modes;
+ break;
+ }
+ }
+
+ return main_monitor_connector;
+}
+
+static void disable_non_main_crtcs(int fd,
+ drmModeRes *resources,
+ drmModeCrtc* main_crtc) {
+ int i;
+ drmModeCrtc* crtc;
+
+ for (i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector *connector;
+
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ crtc = find_crtc_for_connector(fd, resources, connector);
+ if (crtc->crtc_id != main_crtc->crtc_id)
+ drm_disable_crtc(fd, crtc);
+ drmModeFreeCrtc(crtc);
+ }
+}
+
+static GRSurface* drm_init(minui_backend* backend __unused) {
+ drmModeRes *res = NULL;
+ uint32_t selected_mode;
+ char *dev_name;
+ int width, height;
+ int ret, i;
+
+ /* Consider DRM devices in order. */
+ for (i = 0; i < DRM_MAX_MINOR; i++) {
+ uint64_t cap = 0;
+
+ ret = asprintf(&dev_name, DRM_DEV_NAME, DRM_DIR_NAME, i);
+ if (ret < 0)
+ continue;
+
+ drm_fd = open(dev_name, O_RDWR, 0);
+ free(dev_name);
+ if (drm_fd < 0)
+ continue;
+
+ /* We need dumb buffers. */
+ ret = drmGetCap(drm_fd, DRM_CAP_DUMB_BUFFER, &cap);
+ if (ret || cap == 0) {
+ close(drm_fd);
+ continue;
+ }
+
+ res = drmModeGetResources(drm_fd);
+ if (!res) {
+ close(drm_fd);
+ continue;
+ }
+
+ /* Use this device if it has at least one connected monitor. */
+ if (res->count_crtcs > 0 && res->count_connectors > 0)
+ if (find_first_connected_connector(drm_fd, res))
+ break;
+
+ drmModeFreeResources(res);
+ close(drm_fd);
+ res = NULL;
+ }
+
+ if (drm_fd < 0 || res == NULL) {
+ perror("cannot find/open a drm device");
+ return NULL;
+ }
+
+ main_monitor_connector = find_main_monitor(drm_fd,
+ res, &selected_mode);
+
+ if (!main_monitor_connector) {
+ printf("main_monitor_connector not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return NULL;
+ }
+
+ main_monitor_crtc = find_crtc_for_connector(drm_fd, res,
+ main_monitor_connector);
+
+ if (!main_monitor_crtc) {
+ printf("main_monitor_crtc not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return NULL;
+ }
+
+ disable_non_main_crtcs(drm_fd,
+ res, main_monitor_crtc);
+
+ main_monitor_crtc->mode = main_monitor_connector->modes[selected_mode];
+
+ width = main_monitor_crtc->mode.hdisplay;
+ height = main_monitor_crtc->mode.vdisplay;
+
+ drmModeFreeResources(res);
+
+ drm_surfaces[0] = drm_create_surface(width, height);
+ drm_surfaces[1] = drm_create_surface(width, height);
+ if (!drm_surfaces[0] || !drm_surfaces[1]) {
+ drm_destroy_surface(drm_surfaces[0]);
+ drm_destroy_surface(drm_surfaces[1]);
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return NULL;
+ }
+
+ current_buffer = 0;
+
+ drm_enable_crtc(drm_fd, main_monitor_crtc, drm_surfaces[1]);
+
+ return &(drm_surfaces[0]->base);
+}
+
+static GRSurface* drm_flip(minui_backend* backend __unused) {
+ int ret;
+
+ ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id,
+ drm_surfaces[current_buffer]->fb_id, 0, NULL);
+ if (ret < 0) {
+ printf("drmModePageFlip failed ret=%d\n", ret);
+ return NULL;
+ }
+ current_buffer = 1 - current_buffer;
+ return &(drm_surfaces[current_buffer]->base);
+}
+
+static void drm_exit(minui_backend* backend __unused) {
+ drm_disable_crtc(drm_fd, main_monitor_crtc);
+ drm_destroy_surface(drm_surfaces[0]);
+ drm_destroy_surface(drm_surfaces[1]);
+ drmModeFreeCrtc(main_monitor_crtc);
+ drmModeFreeConnector(main_monitor_connector);
+ close(drm_fd);
+ drm_fd = -1;
+}
+
+static minui_backend drm_backend = {
+ .init = drm_init,
+ .flip = drm_flip,
+ .blank = drm_blank,
+ .exit = drm_exit,
+};
+
+minui_backend* open_drm() {
+ return &drm_backend;
+}