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-rw-r--r--minui/graphics_drm.cpp199
-rw-r--r--minui/graphics_drm.h36
2 files changed, 109 insertions, 126 deletions
diff --git a/minui/graphics_drm.cpp b/minui/graphics_drm.cpp
index 81b49fd95..f81fd9d5c 100644
--- a/minui/graphics_drm.cpp
+++ b/minui/graphics_drm.cpp
@@ -24,74 +24,37 @@
#include <sys/types.h>
#include <unistd.h>
+#include <memory>
+
+#include <android-base/macros.h>
+#include <android-base/stringprintf.h>
+#include <android-base/unique_fd.h>
#include <drm_fourcc.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "minui/minui.h"
-#define ARRAY_SIZE(A) (sizeof(A)/sizeof(*(A)))
-
-MinuiBackendDrm::MinuiBackendDrm()
- : GRSurfaceDrms(), main_monitor_crtc(nullptr), main_monitor_connector(nullptr), drm_fd(-1) {}
-
-void MinuiBackendDrm::DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc) {
- if (crtc) {
- drmModeSetCrtc(drm_fd, crtc->crtc_id,
- 0, // fb_id
- 0, 0, // x,y
- nullptr, // connectors
- 0, // connector_count
- nullptr); // mode
- }
-}
-
-int MinuiBackendDrm::DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, GRSurfaceDrm* surface) {
- int 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);
+GRSurfaceDrm::~GRSurfaceDrm() {
+ if (mmapped_buffer_) {
+ munmap(mmapped_buffer_, row_bytes * height);
}
- return ret;
-}
-
-void MinuiBackendDrm::Blank(bool blank) {
- if (blank) {
- DrmDisableCrtc(drm_fd, main_monitor_crtc);
- } else {
- DrmEnableCrtc(drm_fd, main_monitor_crtc, GRSurfaceDrms[current_buffer]);
- }
-}
-
-void MinuiBackendDrm::DrmDestroySurface(GRSurfaceDrm* surface) {
- if (!surface) return;
-
- if (surface->mmapped_buffer_) {
- munmap(surface->mmapped_buffer_, surface->row_bytes * surface->height);
- }
-
- if (surface->fb_id) {
- int ret = drmModeRmFB(drm_fd, surface->fb_id);
- if (ret) {
- printf("drmModeRmFB failed ret=%d\n", ret);
+ if (fb_id) {
+ if (drmModeRmFB(drm_fd_, fb_id) != 0) {
+ perror("Failed to drmModeRmFB");
+ // Falling through to free other resources.
}
}
- if (surface->handle) {
+ if (handle) {
drm_gem_close gem_close = {};
- gem_close.handle = surface->handle;
+ gem_close.handle = handle;
- int ret = drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
- if (ret) {
- printf("DRM_IOCTL_GEM_CLOSE failed ret=%d\n", ret);
+ if (drmIoctl(drm_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close) != 0) {
+ perror("Failed to DRM_IOCTL_GEM_CLOSE");
}
}
-
- delete surface;
}
static int drm_format_to_bpp(uint32_t format) {
@@ -111,10 +74,7 @@ static int drm_format_to_bpp(uint32_t format) {
}
}
-GRSurfaceDrm* MinuiBackendDrm::DrmCreateSurface(int width, int height) {
- GRSurfaceDrm* surface = new GRSurfaceDrm;
- *surface = {};
-
+std::unique_ptr<GRSurfaceDrm> GRSurfaceDrm::Create(int drm_fd, int width, int height) {
uint32_t format;
PixelFormat pixel_format = gr_pixel_format();
// PixelFormat comes in byte order, whereas DRM_FORMAT_* uses little-endian
@@ -137,12 +97,12 @@ GRSurfaceDrm* MinuiBackendDrm::DrmCreateSurface(int width, int height) {
create_dumb.bpp = drm_format_to_bpp(format);
create_dumb.flags = 0;
- 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);
- DrmDestroySurface(surface);
+ if (drmIoctl(drm_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb) != 0) {
+ perror("Failed to DRM_IOCTL_MODE_CREATE_DUMB");
return nullptr;
}
+
+ std::unique_ptr<GRSurfaceDrm> surface = std::make_unique<GRSurfaceDrm>(drm_fd);
surface->handle = create_dumb.handle;
uint32_t handles[4], pitches[4], offsets[4];
@@ -151,20 +111,16 @@ GRSurfaceDrm* MinuiBackendDrm::DrmCreateSurface(int width, int height) {
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);
- DrmDestroySurface(surface);
+ if (drmModeAddFB2(drm_fd, width, height, format, handles, pitches, offsets, &surface->fb_id, 0) !=
+ 0) {
+ perror("Failed to drmModeAddFB2");
return nullptr;
}
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);
- DrmDestroySurface(surface);
+ if (drmIoctl(drm_fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb) != 0) {
+ perror("Failed to DRM_IOCTL_MODE_MAP_DUMB");
return nullptr;
}
@@ -175,14 +131,44 @@ GRSurfaceDrm* MinuiBackendDrm::DrmCreateSurface(int width, int height) {
auto mmapped = mmap(nullptr, surface->height * surface->row_bytes, PROT_READ | PROT_WRITE,
MAP_SHARED, drm_fd, map_dumb.offset);
if (mmapped == MAP_FAILED) {
- perror("mmap() failed");
- DrmDestroySurface(surface);
+ perror("Failed to mmap()");
return nullptr;
}
surface->mmapped_buffer_ = static_cast<uint8_t*>(mmapped);
return surface;
}
+void MinuiBackendDrm::DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc) {
+ if (crtc) {
+ drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ 0, // fb_id
+ 0, 0, // x,y
+ nullptr, // connectors
+ 0, // connector_count
+ nullptr); // mode
+ }
+}
+
+bool MinuiBackendDrm::DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc,
+ const std::unique_ptr<GRSurfaceDrm>& surface) {
+ if (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) != 0) {
+ perror("Failed to drmModeSetCrtc");
+ return false;
+ }
+ return true;
+}
+
+void MinuiBackendDrm::Blank(bool blank) {
+ if (blank) {
+ DrmDisableCrtc(drm_fd, main_monitor_crtc);
+ } else {
+ DrmEnableCrtc(drm_fd, main_monitor_crtc, GRSurfaceDrms[current_buffer]);
+ }
+}
+
static drmModeCrtc* find_crtc_for_connector(int fd, drmModeRes* resources,
drmModeConnector* connector) {
// Find the encoder. If we already have one, just use it.
@@ -264,7 +250,7 @@ drmModeConnector* MinuiBackendDrm::FindMainMonitor(int fd, drmModeRes* resources
do {
main_monitor_connector = find_used_connector_by_type(fd, resources, kConnectorPriority[i]);
i++;
- } while (!main_monitor_connector && i < ARRAY_SIZE(kConnectorPriority));
+ } while (!main_monitor_connector && i < arraysize(kConnectorPriority));
/* If we didn't find a connector, grab the first one that is connected. */
if (!main_monitor_connector) {
@@ -298,60 +284,53 @@ void MinuiBackendDrm::DisableNonMainCrtcs(int fd, drmModeRes* resources, drmMode
GRSurface* MinuiBackendDrm::Init() {
drmModeRes* res = nullptr;
+ drm_fd = -1;
/* 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;
+ auto dev_name = android::base::StringPrintf(DRM_DEV_NAME, DRM_DIR_NAME, i);
+ android::base::unique_fd fd(open(dev_name.c_str(), O_RDWR));
+ if (fd == -1) continue;
- drm_fd = open(dev_name, O_RDWR, 0);
- free(dev_name);
- if (drm_fd < 0) continue;
-
- uint64_t cap = 0;
/* We need dumb buffers. */
- ret = drmGetCap(drm_fd, DRM_CAP_DUMB_BUFFER, &cap);
- if (ret || cap == 0) {
- close(drm_fd);
+ if (uint64_t cap = 0; drmGetCap(fd.get(), DRM_CAP_DUMB_BUFFER, &cap) != 0 || cap == 0) {
continue;
}
- res = drmModeGetResources(drm_fd);
+ res = drmModeGetResources(fd.get());
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;
+ if (find_first_connected_connector(fd.get(), res)) {
+ drm_fd = fd.release();
+ break;
+ }
}
drmModeFreeResources(res);
- close(drm_fd);
res = nullptr;
}
- if (drm_fd < 0 || res == nullptr) {
- perror("cannot find/open a drm device");
+ if (drm_fd == -1 || res == nullptr) {
+ perror("Failed to find/open a drm device");
return nullptr;
}
uint32_t selected_mode;
main_monitor_connector = FindMainMonitor(drm_fd, res, &selected_mode);
-
if (!main_monitor_connector) {
- printf("main_monitor_connector not found\n");
+ fprintf(stderr, "Failed to find main_monitor_connector\n");
drmModeFreeResources(res);
close(drm_fd);
return nullptr;
}
main_monitor_crtc = find_crtc_for_connector(drm_fd, res, main_monitor_connector);
-
if (!main_monitor_crtc) {
- printf("main_monitor_crtc not found\n");
+ fprintf(stderr, "Failed to find main_monitor_crtc\n");
drmModeFreeResources(res);
close(drm_fd);
return nullptr;
@@ -366,21 +345,20 @@ GRSurface* MinuiBackendDrm::Init() {
drmModeFreeResources(res);
- GRSurfaceDrms[0] = DrmCreateSurface(width, height);
- GRSurfaceDrms[1] = DrmCreateSurface(width, height);
+ GRSurfaceDrms[0] = GRSurfaceDrm::Create(drm_fd, width, height);
+ GRSurfaceDrms[1] = GRSurfaceDrm::Create(drm_fd, width, height);
if (!GRSurfaceDrms[0] || !GRSurfaceDrms[1]) {
- // GRSurfaceDrms and drm_fd should be freed in d'tor.
return nullptr;
}
current_buffer = 0;
// We will likely encounter errors in the backend functions (i.e. Flip) if EnableCrtc fails.
- if (DrmEnableCrtc(drm_fd, main_monitor_crtc, GRSurfaceDrms[1]) != 0) {
+ if (!DrmEnableCrtc(drm_fd, main_monitor_crtc, GRSurfaceDrms[1])) {
return nullptr;
}
- return GRSurfaceDrms[0];
+ return GRSurfaceDrms[0].get();
}
static void page_flip_complete(__unused int fd,
@@ -393,12 +371,9 @@ static void page_flip_complete(__unused int fd,
GRSurface* MinuiBackendDrm::Flip() {
bool ongoing_flip = true;
-
- int ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id,
- GRSurfaceDrms[current_buffer]->fb_id,
- DRM_MODE_PAGE_FLIP_EVENT, &ongoing_flip);
- if (ret < 0) {
- printf("drmModePageFlip failed ret=%d\n", ret);
+ if (drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id, GRSurfaceDrms[current_buffer]->fb_id,
+ DRM_MODE_PAGE_FLIP_EVENT, &ongoing_flip) != 0) {
+ perror("Failed to drmModePageFlip");
return nullptr;
}
@@ -408,9 +383,8 @@ GRSurface* MinuiBackendDrm::Flip() {
.events = POLLIN
};
- ret = poll(&fds, 1, -1);
- if (ret == -1 || !(fds.revents & POLLIN)) {
- printf("poll() failed on drm fd\n");
+ if (poll(&fds, 1, -1) == -1 || !(fds.revents & POLLIN)) {
+ perror("Failed to poll() on drm fd");
break;
}
@@ -419,21 +393,18 @@ GRSurface* MinuiBackendDrm::Flip() {
.page_flip_handler = page_flip_complete
};
- ret = drmHandleEvent(drm_fd, &evctx);
- if (ret != 0) {
- printf("drmHandleEvent failed ret=%d\n", ret);
+ if (drmHandleEvent(drm_fd, &evctx) != 0) {
+ perror("Failed to drmHandleEvent");
break;
}
}
current_buffer = 1 - current_buffer;
- return GRSurfaceDrms[current_buffer];
+ return GRSurfaceDrms[current_buffer].get();
}
MinuiBackendDrm::~MinuiBackendDrm() {
DrmDisableCrtc(drm_fd, main_monitor_crtc);
- DrmDestroySurface(GRSurfaceDrms[0]);
- DrmDestroySurface(GRSurfaceDrms[1]);
drmModeFreeCrtc(main_monitor_crtc);
drmModeFreeConnector(main_monitor_connector);
close(drm_fd);
diff --git a/minui/graphics_drm.h b/minui/graphics_drm.h
index f3aad6bfc..02db89f05 100644
--- a/minui/graphics_drm.h
+++ b/minui/graphics_drm.h
@@ -18,6 +18,9 @@
#include <stdint.h>
+#include <memory>
+
+#include <android-base/macros.h>
#include <xf86drmMode.h>
#include "graphics.h"
@@ -25,6 +28,12 @@
class GRSurfaceDrm : public GRSurface {
public:
+ explicit GRSurfaceDrm(int drm_fd) : drm_fd_(drm_fd) {}
+ ~GRSurfaceDrm() override;
+
+ // Creates a GRSurfaceDrm instance.
+ static std::unique_ptr<GRSurfaceDrm> Create(int drm_fd, int width, int height);
+
uint8_t* data() override {
return mmapped_buffer_;
}
@@ -32,30 +41,33 @@ class GRSurfaceDrm : public GRSurface {
private:
friend class MinuiBackendDrm;
- uint32_t fb_id;
- uint32_t handle;
+ const int drm_fd_;
+
+ uint32_t fb_id{ 0 };
+ uint32_t handle{ 0 };
uint8_t* mmapped_buffer_{ nullptr };
+
+ DISALLOW_COPY_AND_ASSIGN(GRSurfaceDrm);
};
class MinuiBackendDrm : public MinuiBackend {
public:
+ MinuiBackendDrm() = default;
+ ~MinuiBackendDrm() override;
+
GRSurface* Init() override;
GRSurface* Flip() override;
void Blank(bool) override;
- ~MinuiBackendDrm() override;
- MinuiBackendDrm();
private:
void DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc);
- int DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, GRSurfaceDrm* surface);
- GRSurfaceDrm* DrmCreateSurface(int width, int height);
- void DrmDestroySurface(GRSurfaceDrm* surface);
+ bool DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, const std::unique_ptr<GRSurfaceDrm>& surface);
void DisableNonMainCrtcs(int fd, drmModeRes* resources, drmModeCrtc* main_crtc);
drmModeConnector* FindMainMonitor(int fd, drmModeRes* resources, uint32_t* mode_index);
- GRSurfaceDrm* GRSurfaceDrms[2];
- int current_buffer;
- drmModeCrtc* main_monitor_crtc;
- drmModeConnector* main_monitor_connector;
- int drm_fd;
+ std::unique_ptr<GRSurfaceDrm> GRSurfaceDrms[2];
+ int current_buffer{ 0 };
+ drmModeCrtc* main_monitor_crtc{ nullptr };
+ drmModeConnector* main_monitor_connector{ nullptr };
+ int drm_fd{ -1 };
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 07:36:36 +0100