merge in oc-release history after reset to master
diff --git a/minui/graphics_adf.cpp b/minui/graphics_adf.cpp
index 9e262b0..9ab0b06 100644
--- a/minui/graphics_adf.cpp
+++ b/minui/graphics_adf.cpp
@@ -16,14 +16,10 @@
#include <errno.h>
#include <fcntl.h>
-#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/cdefs.h>
#include <sys/mman.h>
+#include <unistd.h>
#include <adf/adf.h>
#include <sync/sync.h>
@@ -31,243 +27,213 @@
#include "graphics.h"
struct adf_surface_pdata {
- GRSurface base;
- int fence_fd;
- int fd;
- __u32 offset;
- __u32 pitch;
+ GRSurface base;
+ int fence_fd;
+ int fd;
+ __u32 offset;
+ __u32 pitch;
};
struct adf_pdata {
- minui_backend base;
- int intf_fd;
- adf_id_t eng_id;
- __u32 format;
+ minui_backend base;
+ int intf_fd;
+ adf_id_t eng_id;
+ __u32 format;
- adf_device dev;
+ adf_device dev;
- unsigned int current_surface;
- unsigned int n_surfaces;
- adf_surface_pdata surfaces[2];
+ unsigned int current_surface;
+ unsigned int n_surfaces;
+ adf_surface_pdata surfaces[2];
};
-static GRSurface* adf_flip(minui_backend *backend);
-static void adf_blank(minui_backend *backend, bool blank);
+static GRSurface* adf_flip(minui_backend* backend);
+static void adf_blank(minui_backend* backend, bool blank);
-static int adf_surface_init(adf_pdata *pdata, drm_mode_modeinfo *mode, adf_surface_pdata *surf) {
- memset(surf, 0, sizeof(*surf));
+static int adf_surface_init(adf_pdata* pdata, drm_mode_modeinfo* mode, adf_surface_pdata* surf) {
+ *surf = {};
+ surf->fence_fd = -1;
+ surf->fd = adf_interface_simple_buffer_alloc(pdata->intf_fd, mode->hdisplay, mode->vdisplay,
+ pdata->format, &surf->offset, &surf->pitch);
+ if (surf->fd < 0) {
+ return surf->fd;
+ }
- surf->fence_fd = -1;
- surf->fd = adf_interface_simple_buffer_alloc(pdata->intf_fd, mode->hdisplay,
- mode->vdisplay, pdata->format, &surf->offset, &surf->pitch);
- if (surf->fd < 0)
- return surf->fd;
+ surf->base.width = mode->hdisplay;
+ surf->base.height = mode->vdisplay;
+ surf->base.row_bytes = surf->pitch;
+ surf->base.pixel_bytes = (pdata->format == DRM_FORMAT_RGB565) ? 2 : 4;
- surf->base.width = mode->hdisplay;
- surf->base.height = mode->vdisplay;
- surf->base.row_bytes = surf->pitch;
- surf->base.pixel_bytes = (pdata->format == DRM_FORMAT_RGB565) ? 2 : 4;
+ surf->base.data = static_cast<uint8_t*>(mmap(nullptr, surf->pitch * surf->base.height, PROT_WRITE,
+ MAP_SHARED, surf->fd, surf->offset));
+ if (surf->base.data == MAP_FAILED) {
+ int saved_errno = errno;
+ close(surf->fd);
+ return -saved_errno;
+ }
- surf->base.data = static_cast<uint8_t*>(mmap(NULL,
- surf->pitch * surf->base.height, PROT_WRITE,
- MAP_SHARED, surf->fd, surf->offset));
- if (surf->base.data == MAP_FAILED) {
- close(surf->fd);
- return -errno;
- }
-
- return 0;
+ return 0;
}
-static int adf_interface_init(adf_pdata *pdata)
-{
- adf_interface_data intf_data;
- int ret = 0;
- int err;
+static int adf_interface_init(adf_pdata* pdata) {
+ adf_interface_data intf_data;
+ int err = adf_get_interface_data(pdata->intf_fd, &intf_data);
+ if (err < 0) return err;
- err = adf_get_interface_data(pdata->intf_fd, &intf_data);
- if (err < 0)
- return err;
+ int ret = 0;
+ err = adf_surface_init(pdata, &intf_data.current_mode, &pdata->surfaces[0]);
+ if (err < 0) {
+ fprintf(stderr, "allocating surface 0 failed: %s\n", strerror(-err));
+ ret = err;
+ goto done;
+ }
- err = adf_surface_init(pdata, &intf_data.current_mode, &pdata->surfaces[0]);
- if (err < 0) {
- fprintf(stderr, "allocating surface 0 failed: %s\n", strerror(-err));
- ret = err;
- goto done;
- }
-
- err = adf_surface_init(pdata, &intf_data.current_mode,
- &pdata->surfaces[1]);
- if (err < 0) {
- fprintf(stderr, "allocating surface 1 failed: %s\n", strerror(-err));
- memset(&pdata->surfaces[1], 0, sizeof(pdata->surfaces[1]));
- pdata->n_surfaces = 1;
- } else {
- pdata->n_surfaces = 2;
- }
+ err = adf_surface_init(pdata, &intf_data.current_mode, &pdata->surfaces[1]);
+ if (err < 0) {
+ fprintf(stderr, "allocating surface 1 failed: %s\n", strerror(-err));
+ pdata->surfaces[1] = {};
+ pdata->n_surfaces = 1;
+ } else {
+ pdata->n_surfaces = 2;
+ }
done:
- adf_free_interface_data(&intf_data);
- return ret;
+ adf_free_interface_data(&intf_data);
+ return ret;
}
-static int adf_device_init(adf_pdata *pdata, adf_device *dev)
-{
- adf_id_t intf_id;
- int intf_fd;
- int err;
+static int adf_device_init(adf_pdata* pdata, adf_device* dev) {
+ adf_id_t intf_id;
+ int err = adf_find_simple_post_configuration(dev, &pdata->format, 1, &intf_id, &pdata->eng_id);
+ if (err < 0) return err;
- err = adf_find_simple_post_configuration(dev, &pdata->format, 1, &intf_id,
- &pdata->eng_id);
- if (err < 0)
- return err;
+ err = adf_device_attach(dev, pdata->eng_id, intf_id);
+ if (err < 0 && err != -EALREADY) return err;
- err = adf_device_attach(dev, pdata->eng_id, intf_id);
- if (err < 0 && err != -EALREADY)
- return err;
+ pdata->intf_fd = adf_interface_open(dev, intf_id, O_RDWR);
+ if (pdata->intf_fd < 0) return pdata->intf_fd;
- pdata->intf_fd = adf_interface_open(dev, intf_id, O_RDWR);
- if (pdata->intf_fd < 0)
- return pdata->intf_fd;
+ err = adf_interface_init(pdata);
+ if (err < 0) {
+ close(pdata->intf_fd);
+ pdata->intf_fd = -1;
+ }
- err = adf_interface_init(pdata);
- if (err < 0) {
- close(pdata->intf_fd);
- pdata->intf_fd = -1;
- }
-
- return err;
+ return err;
}
-static GRSurface* adf_init(minui_backend *backend)
-{
- adf_pdata *pdata = (adf_pdata *)backend;
- adf_id_t *dev_ids = NULL;
- ssize_t n_dev_ids, i;
- GRSurface* ret;
+static GRSurface* adf_init(minui_backend* backend) {
+ adf_pdata* pdata = reinterpret_cast<adf_pdata*>(backend);
#if defined(RECOVERY_ABGR)
- pdata->format = DRM_FORMAT_ABGR8888;
+ pdata->format = DRM_FORMAT_ABGR8888;
#elif defined(RECOVERY_BGRA)
- pdata->format = DRM_FORMAT_BGRA8888;
+ pdata->format = DRM_FORMAT_BGRA8888;
#elif defined(RECOVERY_RGBX)
- pdata->format = DRM_FORMAT_RGBX8888;
+ pdata->format = DRM_FORMAT_RGBX8888;
#else
- pdata->format = DRM_FORMAT_RGB565;
+ pdata->format = DRM_FORMAT_RGB565;
#endif
- n_dev_ids = adf_devices(&dev_ids);
- if (n_dev_ids == 0) {
- return NULL;
- } else if (n_dev_ids < 0) {
- fprintf(stderr, "enumerating adf devices failed: %s\n",
- strerror(-n_dev_ids));
- return NULL;
+ adf_id_t* dev_ids = nullptr;
+ ssize_t n_dev_ids = adf_devices(&dev_ids);
+ if (n_dev_ids == 0) {
+ return nullptr;
+ } else if (n_dev_ids < 0) {
+ fprintf(stderr, "enumerating adf devices failed: %s\n", strerror(-n_dev_ids));
+ return nullptr;
+ }
+
+ pdata->intf_fd = -1;
+
+ for (ssize_t i = 0; i < n_dev_ids && pdata->intf_fd < 0; i++) {
+ int err = adf_device_open(dev_ids[i], O_RDWR, &pdata->dev);
+ if (err < 0) {
+ fprintf(stderr, "opening adf device %u failed: %s\n", dev_ids[i], strerror(-err));
+ continue;
}
- pdata->intf_fd = -1;
+ err = adf_device_init(pdata, &pdata->dev);
+ if (err < 0) {
+ fprintf(stderr, "initializing adf device %u failed: %s\n", dev_ids[i], strerror(-err));
+ adf_device_close(&pdata->dev);
+ }
+ }
- for (i = 0; i < n_dev_ids && pdata->intf_fd < 0; i++) {
+ free(dev_ids);
- int err = adf_device_open(dev_ids[i], O_RDWR, &pdata->dev);
- if (err < 0) {
- fprintf(stderr, "opening adf device %u failed: %s\n", dev_ids[i],
- strerror(-err));
- continue;
- }
+ if (pdata->intf_fd < 0) return nullptr;
- err = adf_device_init(pdata, &pdata->dev);
- if (err < 0) {
- fprintf(stderr, "initializing adf device %u failed: %s\n",
- dev_ids[i], strerror(-err));
- adf_device_close(&pdata->dev);
- }
+ GRSurface* ret = adf_flip(backend);
+
+ adf_blank(backend, true);
+ adf_blank(backend, false);
+
+ return ret;
+}
+
+static void adf_sync(adf_surface_pdata* surf) {
+ static constexpr unsigned int warningTimeout = 3000;
+
+ if (surf == nullptr) return;
+
+ if (surf->fence_fd >= 0) {
+ int err = sync_wait(surf->fence_fd, warningTimeout);
+ if (err < 0) {
+ perror("adf sync fence wait error\n");
}
- free(dev_ids);
-
- if (pdata->intf_fd < 0)
- return NULL;
-
- ret = adf_flip(backend);
-
- adf_blank(backend, true);
- adf_blank(backend, false);
-
- return ret;
-}
-
-static void adf_sync(adf_surface_pdata *surf)
-{
- unsigned int warningTimeout = 3000;
-
- if (surf == NULL)
- return;
-
- if (surf->fence_fd >= 0){
- int err = sync_wait(surf->fence_fd, warningTimeout);
- if (err < 0)
- perror("adf sync fence wait error\n");
-
- close(surf->fence_fd);
- surf->fence_fd = -1;
- }
-}
-
-static GRSurface* adf_flip(minui_backend *backend)
-{
- adf_pdata *pdata = (adf_pdata *)backend;
- adf_surface_pdata *surf = &pdata->surfaces[pdata->current_surface];
-
- int fence_fd = adf_interface_simple_post(pdata->intf_fd, pdata->eng_id,
- surf->base.width, surf->base.height, pdata->format, surf->fd,
- surf->offset, surf->pitch, -1);
- if (fence_fd >= 0)
- surf->fence_fd = fence_fd;
-
- pdata->current_surface = (pdata->current_surface + 1) % pdata->n_surfaces;
- adf_sync(&pdata->surfaces[pdata->current_surface]);
- return &pdata->surfaces[pdata->current_surface].base;
-}
-
-static void adf_blank(minui_backend *backend, bool blank)
-{
- adf_pdata *pdata = (adf_pdata *)backend;
- adf_interface_blank(pdata->intf_fd,
- blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
-}
-
-static void adf_surface_destroy(adf_surface_pdata *surf)
-{
- munmap(surf->base.data, surf->pitch * surf->base.height);
close(surf->fence_fd);
- close(surf->fd);
+ surf->fence_fd = -1;
+ }
}
-static void adf_exit(minui_backend *backend)
-{
- adf_pdata *pdata = (adf_pdata *)backend;
- unsigned int i;
+static GRSurface* adf_flip(minui_backend* backend) {
+ adf_pdata* pdata = reinterpret_cast<adf_pdata*>(backend);
+ adf_surface_pdata* surf = &pdata->surfaces[pdata->current_surface];
- adf_device_close(&pdata->dev);
- for (i = 0; i < pdata->n_surfaces; i++)
- adf_surface_destroy(&pdata->surfaces[i]);
- if (pdata->intf_fd >= 0)
- close(pdata->intf_fd);
- free(pdata);
+ int fence_fd =
+ adf_interface_simple_post(pdata->intf_fd, pdata->eng_id, surf->base.width, surf->base.height,
+ pdata->format, surf->fd, surf->offset, surf->pitch, -1);
+ if (fence_fd >= 0) surf->fence_fd = fence_fd;
+
+ pdata->current_surface = (pdata->current_surface + 1) % pdata->n_surfaces;
+ adf_sync(&pdata->surfaces[pdata->current_surface]);
+ return &pdata->surfaces[pdata->current_surface].base;
}
-minui_backend *open_adf()
-{
- adf_pdata* pdata = static_cast<adf_pdata*>(calloc(1, sizeof(*pdata)));
- if (!pdata) {
- perror("allocating adf backend failed");
- return NULL;
- }
+static void adf_blank(minui_backend* backend, bool blank) {
+ adf_pdata* pdata = reinterpret_cast<adf_pdata*>(backend);
+ adf_interface_blank(pdata->intf_fd, blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
+}
- pdata->base.init = adf_init;
- pdata->base.flip = adf_flip;
- pdata->base.blank = adf_blank;
- pdata->base.exit = adf_exit;
- return &pdata->base;
+static void adf_surface_destroy(adf_surface_pdata* surf) {
+ munmap(surf->base.data, surf->pitch * surf->base.height);
+ close(surf->fence_fd);
+ close(surf->fd);
+}
+
+static void adf_exit(minui_backend* backend) {
+ adf_pdata* pdata = reinterpret_cast<adf_pdata*>(backend);
+ adf_device_close(&pdata->dev);
+ for (unsigned int i = 0; i < pdata->n_surfaces; i++) {
+ adf_surface_destroy(&pdata->surfaces[i]);
+ }
+ if (pdata->intf_fd >= 0) close(pdata->intf_fd);
+ free(pdata);
+}
+
+minui_backend* open_adf() {
+ adf_pdata* pdata = static_cast<adf_pdata*>(calloc(1, sizeof(*pdata)));
+ if (!pdata) {
+ perror("allocating adf backend failed");
+ return nullptr;
+ }
+
+ pdata->base.init = adf_init;
+ pdata->base.flip = adf_flip;
+ pdata->base.blank = adf_blank;
+ pdata->base.exit = adf_exit;
+
+ return &pdata->base;
}
diff --git a/minui/graphics_drm.cpp b/minui/graphics_drm.cpp
index 199f4d8..2eeff58 100644
--- a/minui/graphics_drm.cpp
+++ b/minui/graphics_drm.cpp
@@ -14,16 +14,14 @@
* limitations under the License.
*/
-#include <drm_fourcc.h>
#include <fcntl.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 <drm_fourcc.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
@@ -33,9 +31,9 @@
#define ARRAY_SIZE(A) (sizeof(A)/sizeof(*(A)))
struct drm_surface {
- GRSurface base;
- uint32_t fb_id;
- uint32_t handle;
+ GRSurface base;
+ uint32_t fb_id;
+ uint32_t handle;
};
static drm_surface *drm_surfaces[2];
@@ -47,429 +45,377 @@
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
- }
+ if (crtc) {
+ drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ 0, // fb_id
+ 0, 0, // x,y
+ nullptr, // connectors
+ 0, // connector_count
+ nullptr); // mode
+ }
}
-static void drm_enable_crtc(int drm_fd, drmModeCrtc *crtc,
- struct drm_surface *surface) {
- int32_t ret;
+static void drm_enable_crtc(int drm_fd, drmModeCrtc* crtc, struct drm_surface* surface) {
+ int32_t 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);
- 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);
+ 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]);
+ 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)
- return;
+ if (surface->base.data) {
+ munmap(surface->base.data, surface->base.row_bytes * surface->base.height);
+ }
- 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->fb_id) {
+ int 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;
+ if (surface->handle) {
+ drm_gem_close 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);
+ int ret = drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
+ if (ret) {
+ printf("DRM_IOCTL_GEM_CLOSE failed ret=%d\n", ret);
}
+ }
- free(surface);
+ 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_XRGB8888:
- return 32;
- case DRM_FORMAT_RGB565:
- return 16;
- default:
- printf("Unknown format %d\n", format);
- return 32;
- }
+ 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_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;
- int ret;
+ drm_surface* surface = static_cast<drm_surface*>(calloc(1, sizeof(*surface)));
+ if (!surface) {
+ printf("Can't allocate memory\n");
+ return nullptr;
+ }
- surface = (struct drm_surface*)calloc(1, sizeof(*surface));
- if (!surface) {
- printf("Can't allocate memory\n");
- return NULL;
- }
-
+ uint32_t format;
#if defined(RECOVERY_ABGR)
- format = DRM_FORMAT_RGBA8888;
+ format = DRM_FORMAT_RGBA8888;
#elif defined(RECOVERY_BGRA)
- format = DRM_FORMAT_ARGB8888;
+ format = DRM_FORMAT_ARGB8888;
#elif defined(RECOVERY_RGBX)
- format = DRM_FORMAT_XBGR8888;
+ format = DRM_FORMAT_XBGR8888;
#else
- format = DRM_FORMAT_RGB565;
+ format = DRM_FORMAT_RGB565;
#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;
+ drm_mode_create_dumb 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;
+ int 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 nullptr;
+ }
+ surface->handle = create_dumb.handle;
- uint32_t handles[4], pitches[4], offsets[4];
+ uint32_t handles[4], pitches[4], offsets[4];
- handles[0] = surface->handle;
- pitches[0] = create_dumb.pitch;
- offsets[0] = 0;
+ 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;
- }
+ 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 nullptr;
+ }
- 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;;
- }
+ drm_mode_map_dumb 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 nullptr;
+ }
- 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.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;
- }
+ 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.data =
+ static_cast<unsigned char*>(mmap(nullptr, 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 nullptr;
+ }
- return surface;
+ return surface;
}
-static drmModeCrtc *find_crtc_for_connector(int fd,
- drmModeRes *resources,
- drmModeConnector *connector) {
- int i, j;
- drmModeEncoder *encoder;
- int32_t crtc;
+static drmModeCrtc* find_crtc_for_connector(int fd, drmModeRes* resources,
+ drmModeConnector* connector) {
+ // Find the encoder. If we already have one, just use it.
+ drmModeEncoder* encoder;
+ if (connector->encoder_id) {
+ encoder = drmModeGetEncoder(fd, connector->encoder_id);
+ } else {
+ encoder = nullptr;
+ }
- /*
- * Find the encoder. If we already have one, just use it.
- */
- if (connector->encoder_id)
- encoder = drmModeGetEncoder(fd, connector->encoder_id);
- else
- encoder = NULL;
+ int32_t crtc;
+ if (encoder && encoder->crtc_id) {
+ crtc = encoder->crtc_id;
+ drmModeFreeEncoder(encoder);
+ return drmModeGetCrtc(fd, crtc);
+ }
- if (encoder && encoder->crtc_id) {
- crtc = encoder->crtc_id;
+ // Didn't find anything, try to find a crtc and encoder combo.
+ crtc = -1;
+ for (int i = 0; i < connector->count_encoders; i++) {
+ encoder = drmModeGetEncoder(fd, connector->encoders[i]);
+
+ if (encoder) {
+ for (int 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);
+ }
}
+ }
- /*
- * 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;
+ return nullptr;
}
-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);
- }
+static drmModeConnector* find_used_connector_by_type(int fd, drmModeRes* resources, unsigned type) {
+ for (int i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector* 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;
+ }
+ return nullptr;
}
-static drmModeConnector *find_first_connected_connector(int fd,
- drmModeRes *resources) {
- int i;
- for (i = 0; i < resources->count_connectors; i++) {
- drmModeConnector *connector;
+static drmModeConnector* find_first_connected_connector(int fd, drmModeRes* resources) {
+ for (int 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;
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->count_modes > 0) && (connector->connection == DRM_MODE_CONNECTED))
+ return connector;
- drmModeFreeConnector(connector);
- }
+ drmModeFreeConnector(connector);
}
- return NULL;
+ }
+ return nullptr;
}
-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,
- };
+static drmModeConnector* find_main_monitor(int fd, drmModeRes* resources, uint32_t* mode_index) {
+ /* Look for LVDS/eDP/DSI connectors. Those are the main screens. */
+ static constexpr 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));
+ drmModeConnector* main_monitor_connector = nullptr;
+ unsigned i = 0;
+ 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 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;
+ /* If we still didn't find a connector, give up and return. */
+ if (!main_monitor_connector) return nullptr;
- *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;
- }
+ *mode_index = 0;
+ for (int 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;
+ 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 void disable_non_main_crtcs(int fd, drmModeRes* resources, drmModeCrtc* main_crtc) {
+ for (int i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector* connector = drmModeGetConnector(fd, resources->connectors[i]);
+ drmModeCrtc* 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;
+ drmModeRes* res = nullptr;
- /* Consider DRM devices in order. */
- for (i = 0; i < DRM_MAX_MINOR; i++) {
- uint64_t cap = 0;
+ /* Consider DRM devices in order. */
+ for (int i = 0; i < DRM_MAX_MINOR; i++) {
+ char* dev_name;
+ int ret = asprintf(&dev_name, DRM_DEV_NAME, DRM_DIR_NAME, i);
+ if (ret < 0) continue;
- 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;
- 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;
+ uint64_t cap = 0;
+ /* We need dumb buffers. */
+ ret = drmGetCap(drm_fd, DRM_CAP_DUMB_BUFFER, &cap);
+ if (ret || cap == 0) {
+ close(drm_fd);
+ continue;
}
- if (drm_fd < 0 || res == NULL) {
- perror("cannot find/open a drm device");
- return NULL;
+ res = drmModeGetResources(drm_fd);
+ if (!res) {
+ close(drm_fd);
+ continue;
}
- 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;
+ /* 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;
}
- 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);
+ close(drm_fd);
+ res = nullptr;
+ }
- 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;
- }
+ if (drm_fd < 0 || res == nullptr) {
+ perror("cannot find/open a drm device");
+ return nullptr;
+ }
- current_buffer = 0;
+ uint32_t selected_mode;
+ main_monitor_connector = find_main_monitor(drm_fd, res, &selected_mode);
- drm_enable_crtc(drm_fd, main_monitor_crtc, drm_surfaces[1]);
+ if (!main_monitor_connector) {
+ printf("main_monitor_connector not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return nullptr;
+ }
- return &(drm_surfaces[0]->base);
+ 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 nullptr;
+ }
+
+ disable_non_main_crtcs(drm_fd, res, main_monitor_crtc);
+
+ main_monitor_crtc->mode = main_monitor_connector->modes[selected_mode];
+
+ int width = main_monitor_crtc->mode.hdisplay;
+ int 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 nullptr;
+ }
+
+ 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);
+ int ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id, drm_surfaces[current_buffer]->fb_id,
+ 0, nullptr);
+ if (ret < 0) {
+ printf("drmModePageFlip failed ret=%d\n", ret);
+ return nullptr;
+ }
+ 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;
+ 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,
+ .init = drm_init,
+ .flip = drm_flip,
+ .blank = drm_blank,
+ .exit = drm_exit,
};
minui_backend* open_drm() {
- return &drm_backend;
+ return &drm_backend;
}
diff --git a/minui/graphics_fbdev.cpp b/minui/graphics_fbdev.cpp
index 2d70249..dd4c9d4 100644
--- a/minui/graphics_fbdev.cpp
+++ b/minui/graphics_fbdev.cpp
@@ -14,20 +14,15 @@
* limitations under the License.
*/
+#include <fcntl.h>
+#include <linux/fb.h>
+#include <stdio.h>
#include <stdlib.h>
#include <string.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 <unistd.h>
#include "minui/minui.h"
#include "graphics.h"
@@ -39,162 +34,157 @@
static GRSurface gr_framebuffer[2];
static bool double_buffered;
-static GRSurface* gr_draw = NULL;
+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,
+ .init = fbdev_init,
+ .flip = fbdev_flip,
+ .blank = fbdev_blank,
+ .exit = fbdev_exit,
};
minui_backend* open_fbdev() {
- return &my_backend;
+ 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 fbdev_blank(minui_backend* backend __unused, bool blank) {
+ int 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;
+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;
+ 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 GRSurface* fbdev_init(minui_backend* backend) {
- int fd = open("/dev/graphics/fb0", O_RDWR);
- if (fd == -1) {
- perror("cannot open fb0");
- return NULL;
+ int fd = open("/dev/graphics/fb0", O_RDWR);
+ if (fd == -1) {
+ perror("cannot open fb0");
+ return nullptr;
+ }
+
+ 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;
+ }
+
+ // 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);
+
+ 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].data = static_cast<uint8_t*>(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 = static_cast<GRSurface*>(malloc(sizeof(GRSurface)));
+ memcpy(gr_draw, gr_framebuffer, sizeof(GRSurface));
+ gr_draw->data = static_cast<unsigned char*>(malloc(gr_draw->height * gr_draw->row_bytes));
+ if (!gr_draw->data) {
+ perror("failed to allocate in-memory surface");
+ return nullptr;
}
+ }
- fb_fix_screeninfo fi;
- if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
- perror("failed to get fb0 info");
- close(fd);
- return NULL;
- }
+ memset(gr_draw->data, 0, gr_draw->height * gr_draw->row_bytes);
+ fb_fd = fd;
+ set_displayed_framebuffer(0);
- if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
- perror("failed to get fb0 info");
- close(fd);
- return NULL;
- }
+ printf("framebuffer: %d (%d x %d)\n", fb_fd, gr_draw->width, gr_draw->height);
- // 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...
+ fbdev_blank(backend, true);
+ fbdev_blank(backend, false);
- 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);
-
- 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 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 = static_cast<uint8_t*>(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;
+ return gr_draw;
}
static GRSurface* fbdev_flip(minui_backend* backend __unused) {
- 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);
- } 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);
- }
- return gr_draw;
+ 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);
+ } 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);
+ }
+ return gr_draw;
}
static void fbdev_exit(minui_backend* backend __unused) {
- close(fb_fd);
- fb_fd = -1;
+ close(fb_fd);
+ fb_fd = -1;
- if (!double_buffered && gr_draw) {
- free(gr_draw->data);
- free(gr_draw);
- }
- gr_draw = NULL;
+ if (!double_buffered && gr_draw) {
+ free(gr_draw->data);
+ free(gr_draw);
+ }
+ gr_draw = nullptr;
}