drm_hwcomposer: use CamelCase in source/header files related to class
Main goal is to increase readability of file names.
AOSP uses camelcase for files in many projects.
Lets do the same for drm_hwcomposer.
Keep platform/ directory as is, since class names is different from file names.
Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Change-Id: I7e992357851c2a86711f4da1241c4d507359e56b
diff --git a/compositor/DrmDisplayCompositor.cpp b/compositor/DrmDisplayCompositor.cpp
new file mode 100644
index 0000000..467f8ba
--- /dev/null
+++ b/compositor/DrmDisplayCompositor.cpp
@@ -0,0 +1,1097 @@
+/*
+ * 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.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+#define LOG_TAG "hwc-drm-display-compositor"
+
+#include "DrmDisplayCompositor.h"
+
+#include <drm/drm_mode.h>
+#include <log/log.h>
+#include <pthread.h>
+#include <sched.h>
+#include <stdlib.h>
+#include <sync/sync.h>
+#include <time.h>
+#include <utils/Trace.h>
+
+#include <array>
+#include <sstream>
+#include <vector>
+
+#include "drm/DrmCrtc.h"
+#include "drm/DrmDevice.h"
+#include "drm/DrmPlane.h"
+#include "utils/autolock.h"
+
+static const uint32_t kWaitWritebackFence = 100; // ms
+
+namespace android {
+
+std::ostream &operator<<(std::ostream &str, FlatteningState state) {
+ std::array<const char *, 6> flattenting_state_str = {
+ "None", "Not needed", "SF Requested", "Squashed by GPU",
+ "Serial", "Concurrent",
+ };
+
+ return str << flattenting_state_str[static_cast<int>(state)];
+}
+
+class CompositorVsyncCallback : public VsyncCallback {
+ public:
+ CompositorVsyncCallback(DrmDisplayCompositor *compositor)
+ : compositor_(compositor) {
+ }
+
+ void Callback(int display, int64_t timestamp) {
+ compositor_->Vsync(display, timestamp);
+ }
+
+ private:
+ DrmDisplayCompositor *compositor_;
+};
+
+DrmDisplayCompositor::DrmDisplayCompositor()
+ : resource_manager_(NULL),
+ display_(-1),
+ initialized_(false),
+ active_(false),
+ use_hw_overlays_(true),
+ dump_frames_composited_(0),
+ dump_last_timestamp_ns_(0),
+ flatten_countdown_(FLATTEN_COUNTDOWN_INIT),
+ writeback_fence_(-1),
+ flattening_state_(FlatteningState::kNone),
+ frames_flattened_(0) {
+ struct timespec ts;
+ if (clock_gettime(CLOCK_MONOTONIC, &ts))
+ return;
+ dump_last_timestamp_ns_ = ts.tv_sec * 1000 * 1000 * 1000 + ts.tv_nsec;
+}
+
+DrmDisplayCompositor::~DrmDisplayCompositor() {
+ if (!initialized_)
+ return;
+
+ vsync_worker_.Exit();
+ int ret = pthread_mutex_lock(&lock_);
+ if (ret)
+ ALOGE("Failed to acquire compositor lock %d", ret);
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ if (mode_.blob_id)
+ drm->DestroyPropertyBlob(mode_.blob_id);
+ if (mode_.old_blob_id)
+ drm->DestroyPropertyBlob(mode_.old_blob_id);
+
+ active_composition_.reset();
+
+ ret = pthread_mutex_unlock(&lock_);
+ if (ret)
+ ALOGE("Failed to acquire compositor lock %d", ret);
+
+ pthread_mutex_destroy(&lock_);
+}
+
+int DrmDisplayCompositor::Init(ResourceManager *resource_manager, int display) {
+ resource_manager_ = resource_manager;
+ display_ = display;
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display);
+ if (!drm) {
+ ALOGE("Could not find drmdevice for display");
+ return -EINVAL;
+ }
+ int ret = pthread_mutex_init(&lock_, NULL);
+ if (ret) {
+ ALOGE("Failed to initialize drm compositor lock %d\n", ret);
+ return ret;
+ }
+ planner_ = Planner::CreateInstance(drm);
+
+ vsync_worker_.Init(drm, display_);
+ auto callback = std::make_shared<CompositorVsyncCallback>(this);
+ vsync_worker_.RegisterCallback(callback);
+
+ initialized_ = true;
+ return 0;
+}
+
+std::unique_ptr<DrmDisplayComposition> DrmDisplayCompositor::CreateComposition()
+ const {
+ return std::unique_ptr<DrmDisplayComposition>(new DrmDisplayComposition());
+}
+
+std::unique_ptr<DrmDisplayComposition>
+DrmDisplayCompositor::CreateInitializedComposition() const {
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ DrmCrtc *crtc = drm->GetCrtcForDisplay(display_);
+ if (!crtc) {
+ ALOGE("Failed to find crtc for display = %d", display_);
+ return std::unique_ptr<DrmDisplayComposition>();
+ }
+ std::unique_ptr<DrmDisplayComposition> comp = CreateComposition();
+ std::shared_ptr<Importer> importer = resource_manager_->GetImporter(display_);
+ if (!importer) {
+ ALOGE("Failed to find resources for display = %d", display_);
+ return std::unique_ptr<DrmDisplayComposition>();
+ }
+ int ret = comp->Init(drm, crtc, importer.get(), planner_.get(), 0);
+ if (ret) {
+ ALOGE("Failed to init composition for display = %d", display_);
+ return std::unique_ptr<DrmDisplayComposition>();
+ }
+ return comp;
+}
+
+FlatteningState DrmDisplayCompositor::GetFlatteningState() const {
+ return flattening_state_;
+}
+
+uint32_t DrmDisplayCompositor::GetFlattenedFramesCount() const {
+ return frames_flattened_;
+}
+
+bool DrmDisplayCompositor::ShouldFlattenOnClient() const {
+ return flattening_state_ == FlatteningState::kClientRequested ||
+ flattening_state_ == FlatteningState::kClientDone;
+}
+
+std::tuple<uint32_t, uint32_t, int>
+DrmDisplayCompositor::GetActiveModeResolution() {
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ DrmConnector *connector = drm->GetConnectorForDisplay(display_);
+ if (connector == NULL) {
+ ALOGE("Failed to determine display mode: no connector for display %d",
+ display_);
+ return std::make_tuple(0, 0, -ENODEV);
+ }
+
+ const DrmMode &mode = connector->active_mode();
+ return std::make_tuple(mode.h_display(), mode.v_display(), 0);
+}
+
+int DrmDisplayCompositor::DisablePlanes(DrmDisplayComposition *display_comp) {
+ drmModeAtomicReqPtr pset = drmModeAtomicAlloc();
+ if (!pset) {
+ ALOGE("Failed to allocate property set");
+ return -ENOMEM;
+ }
+
+ int ret;
+ std::vector<DrmCompositionPlane> &comp_planes = display_comp
+ ->composition_planes();
+ for (DrmCompositionPlane &comp_plane : comp_planes) {
+ DrmPlane *plane = comp_plane.plane();
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_property().id(), 0) < 0 ||
+ drmModeAtomicAddProperty(pset, plane->id(), plane->fb_property().id(),
+ 0) < 0;
+ if (ret) {
+ ALOGE("Failed to add plane %d disable to pset", plane->id());
+ drmModeAtomicFree(pset);
+ return ret;
+ }
+ }
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ ret = drmModeAtomicCommit(drm->fd(), pset, 0, drm);
+ if (ret) {
+ ALOGE("Failed to commit pset ret=%d\n", ret);
+ drmModeAtomicFree(pset);
+ return ret;
+ }
+
+ drmModeAtomicFree(pset);
+ return 0;
+}
+
+int DrmDisplayCompositor::SetupWritebackCommit(drmModeAtomicReqPtr pset,
+ uint32_t crtc_id,
+ DrmConnector *writeback_conn,
+ DrmHwcBuffer *writeback_buffer) {
+ int ret = 0;
+ if (writeback_conn->writeback_fb_id().id() == 0 ||
+ writeback_conn->writeback_out_fence().id() == 0) {
+ ALOGE("Writeback properties don't exit");
+ return -EINVAL;
+ }
+ if ((*writeback_buffer)->fb_id == 0) {
+ ALOGE("Invalid writeback buffer");
+ return -EINVAL;
+ }
+ ret = drmModeAtomicAddProperty(pset, writeback_conn->id(),
+ writeback_conn->writeback_fb_id().id(),
+ (*writeback_buffer)->fb_id);
+ if (ret < 0) {
+ ALOGE("Failed to add writeback_fb_id");
+ return ret;
+ }
+ ret = drmModeAtomicAddProperty(pset, writeback_conn->id(),
+ writeback_conn->writeback_out_fence().id(),
+ (uint64_t)&writeback_fence_);
+ if (ret < 0) {
+ ALOGE("Failed to add writeback_out_fence");
+ return ret;
+ }
+
+ ret = drmModeAtomicAddProperty(pset, writeback_conn->id(),
+ writeback_conn->crtc_id_property().id(),
+ crtc_id);
+ if (ret < 0) {
+ ALOGE("Failed to attach writeback");
+ return ret;
+ }
+ return 0;
+}
+
+int DrmDisplayCompositor::CommitFrame(DrmDisplayComposition *display_comp,
+ bool test_only,
+ DrmConnector *writeback_conn,
+ DrmHwcBuffer *writeback_buffer) {
+ ATRACE_CALL();
+
+ int ret = 0;
+
+ std::vector<DrmHwcLayer> &layers = display_comp->layers();
+ std::vector<DrmCompositionPlane> &comp_planes = display_comp
+ ->composition_planes();
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ uint64_t out_fences[drm->crtcs().size()];
+
+ DrmConnector *connector = drm->GetConnectorForDisplay(display_);
+ if (!connector) {
+ ALOGE("Could not locate connector for display %d", display_);
+ return -ENODEV;
+ }
+ DrmCrtc *crtc = drm->GetCrtcForDisplay(display_);
+ if (!crtc) {
+ ALOGE("Could not locate crtc for display %d", display_);
+ return -ENODEV;
+ }
+
+ drmModeAtomicReqPtr pset = drmModeAtomicAlloc();
+ if (!pset) {
+ ALOGE("Failed to allocate property set");
+ return -ENOMEM;
+ }
+
+ if (writeback_buffer != NULL) {
+ if (writeback_conn == NULL) {
+ ALOGE("Invalid arguments requested writeback without writeback conn");
+ return -EINVAL;
+ }
+ ret = SetupWritebackCommit(pset, crtc->id(), writeback_conn,
+ writeback_buffer);
+ if (ret < 0) {
+ ALOGE("Failed to Setup Writeback Commit ret = %d", ret);
+ return ret;
+ }
+ }
+ if (crtc->out_fence_ptr_property().id() != 0) {
+ ret = drmModeAtomicAddProperty(pset, crtc->id(),
+ crtc->out_fence_ptr_property().id(),
+ (uint64_t)&out_fences[crtc->pipe()]);
+ if (ret < 0) {
+ ALOGE("Failed to add OUT_FENCE_PTR property to pset: %d", ret);
+ drmModeAtomicFree(pset);
+ return ret;
+ }
+ }
+
+ if (mode_.needs_modeset) {
+ ret = drmModeAtomicAddProperty(pset, crtc->id(),
+ crtc->active_property().id(), 1);
+ if (ret < 0) {
+ ALOGE("Failed to add crtc active to pset\n");
+ drmModeAtomicFree(pset);
+ return ret;
+ }
+
+ ret = drmModeAtomicAddProperty(pset, crtc->id(), crtc->mode_property().id(),
+ mode_.blob_id) < 0 ||
+ drmModeAtomicAddProperty(pset, connector->id(),
+ connector->crtc_id_property().id(),
+ crtc->id()) < 0;
+ if (ret) {
+ ALOGE("Failed to add blob %d to pset", mode_.blob_id);
+ drmModeAtomicFree(pset);
+ return ret;
+ }
+ }
+
+ for (DrmCompositionPlane &comp_plane : comp_planes) {
+ DrmPlane *plane = comp_plane.plane();
+ DrmCrtc *crtc = comp_plane.crtc();
+ std::vector<size_t> &source_layers = comp_plane.source_layers();
+
+ int fb_id = -1;
+ int fence_fd = -1;
+ hwc_rect_t display_frame;
+ hwc_frect_t source_crop;
+ uint64_t rotation = 0;
+ uint64_t alpha = 0xFFFF;
+ uint64_t blend;
+
+ if (comp_plane.type() != DrmCompositionPlane::Type::kDisable) {
+ if (source_layers.size() > 1) {
+ ALOGE("Can't handle more than one source layer sz=%zu type=%d",
+ source_layers.size(), comp_plane.type());
+ continue;
+ }
+
+ if (source_layers.empty() || source_layers.front() >= layers.size()) {
+ ALOGE("Source layer index %zu out of bounds %zu type=%d",
+ source_layers.front(), layers.size(), comp_plane.type());
+ break;
+ }
+ DrmHwcLayer &layer = layers[source_layers.front()];
+ if (!layer.buffer) {
+ ALOGE("Expected a valid framebuffer for pset");
+ break;
+ }
+ fb_id = layer.buffer->fb_id;
+ fence_fd = layer.acquire_fence.get();
+ display_frame = layer.display_frame;
+ source_crop = layer.source_crop;
+ alpha = layer.alpha;
+
+ if (plane->blend_property().id()) {
+ switch (layer.blending) {
+ case DrmHwcBlending::kPreMult:
+ std::tie(blend, ret) = plane->blend_property().GetEnumValueWithName(
+ "Pre-multiplied");
+ break;
+ case DrmHwcBlending::kCoverage:
+ std::tie(blend, ret) = plane->blend_property().GetEnumValueWithName(
+ "Coverage");
+ break;
+ case DrmHwcBlending::kNone:
+ default:
+ std::tie(blend, ret) = plane->blend_property().GetEnumValueWithName(
+ "None");
+ break;
+ }
+ }
+
+ if (plane->zpos_property().id() &&
+ !plane->zpos_property().is_immutable()) {
+ uint64_t min_zpos = 0;
+
+ // Ignore ret and use min_zpos as 0 by default
+ std::tie(std::ignore, min_zpos) = plane->zpos_property().range_min();
+
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->zpos_property().id(),
+ source_layers.front() + min_zpos) < 0;
+ if (ret) {
+ ALOGE("Failed to add zpos property %d to plane %d",
+ plane->zpos_property().id(), plane->id());
+ break;
+ }
+ }
+
+ rotation = 0;
+ if (layer.transform & DrmHwcTransform::kFlipH)
+ rotation |= DRM_MODE_REFLECT_X;
+ if (layer.transform & DrmHwcTransform::kFlipV)
+ rotation |= DRM_MODE_REFLECT_Y;
+ if (layer.transform & DrmHwcTransform::kRotate90)
+ rotation |= DRM_MODE_ROTATE_90;
+ else if (layer.transform & DrmHwcTransform::kRotate180)
+ rotation |= DRM_MODE_ROTATE_180;
+ else if (layer.transform & DrmHwcTransform::kRotate270)
+ rotation |= DRM_MODE_ROTATE_270;
+ else
+ rotation |= DRM_MODE_ROTATE_0;
+
+ if (fence_fd >= 0) {
+ int prop_id = plane->in_fence_fd_property().id();
+ if (prop_id == 0) {
+ ALOGE("Failed to get IN_FENCE_FD property id");
+ break;
+ }
+ ret = drmModeAtomicAddProperty(pset, plane->id(), prop_id, fence_fd);
+ if (ret < 0) {
+ ALOGE("Failed to add IN_FENCE_FD property to pset: %d", ret);
+ break;
+ }
+ }
+ }
+
+ // Disable the plane if there's no framebuffer
+ if (fb_id < 0) {
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_property().id(), 0) < 0 ||
+ drmModeAtomicAddProperty(pset, plane->id(),
+ plane->fb_property().id(), 0) < 0;
+ if (ret) {
+ ALOGE("Failed to add plane %d disable to pset", plane->id());
+ break;
+ }
+ continue;
+ }
+
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_property().id(), crtc->id()) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->fb_property().id(), fb_id) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_x_property().id(),
+ display_frame.left) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_y_property().id(),
+ display_frame.top) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_w_property().id(),
+ display_frame.right - display_frame.left) <
+ 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->crtc_h_property().id(),
+ display_frame.bottom - display_frame.top) <
+ 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->src_x_property().id(),
+ (int)(source_crop.left) << 16) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->src_y_property().id(),
+ (int)(source_crop.top) << 16) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->src_w_property().id(),
+ (int)(source_crop.right - source_crop.left)
+ << 16) < 0;
+ ret |= drmModeAtomicAddProperty(pset, plane->id(),
+ plane->src_h_property().id(),
+ (int)(source_crop.bottom - source_crop.top)
+ << 16) < 0;
+ if (ret) {
+ ALOGE("Failed to add plane %d to set", plane->id());
+ break;
+ }
+
+ if (plane->rotation_property().id()) {
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->rotation_property().id(),
+ rotation) < 0;
+ if (ret) {
+ ALOGE("Failed to add rotation property %d to plane %d",
+ plane->rotation_property().id(), plane->id());
+ break;
+ }
+ }
+
+ if (plane->alpha_property().id()) {
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->alpha_property().id(), alpha) < 0;
+ if (ret) {
+ ALOGE("Failed to add alpha property %d to plane %d",
+ plane->alpha_property().id(), plane->id());
+ break;
+ }
+ }
+
+ if (plane->blend_property().id()) {
+ ret = drmModeAtomicAddProperty(pset, plane->id(),
+ plane->blend_property().id(), blend) < 0;
+ if (ret) {
+ ALOGE("Failed to add pixel blend mode property %d to plane %d",
+ plane->blend_property().id(), plane->id());
+ break;
+ }
+ }
+ }
+
+ if (!ret) {
+ uint32_t flags = DRM_MODE_ATOMIC_ALLOW_MODESET;
+ if (test_only)
+ flags |= DRM_MODE_ATOMIC_TEST_ONLY;
+
+ ret = drmModeAtomicCommit(drm->fd(), pset, flags, drm);
+ if (ret) {
+ if (!test_only)
+ ALOGE("Failed to commit pset ret=%d\n", ret);
+ drmModeAtomicFree(pset);
+ return ret;
+ }
+ }
+ if (pset)
+ drmModeAtomicFree(pset);
+
+ if (!test_only && mode_.needs_modeset) {
+ ret = drm->DestroyPropertyBlob(mode_.old_blob_id);
+ if (ret) {
+ ALOGE("Failed to destroy old mode property blob %" PRIu32 "/%d",
+ mode_.old_blob_id, ret);
+ return ret;
+ }
+
+ /* TODO: Add dpms to the pset when the kernel supports it */
+ ret = ApplyDpms(display_comp);
+ if (ret) {
+ ALOGE("Failed to apply DPMS after modeset %d\n", ret);
+ return ret;
+ }
+
+ connector->set_active_mode(mode_.mode);
+ mode_.old_blob_id = mode_.blob_id;
+ mode_.blob_id = 0;
+ mode_.needs_modeset = false;
+ }
+
+ if (crtc->out_fence_ptr_property().id()) {
+ display_comp->set_out_fence((int)out_fences[crtc->pipe()]);
+ }
+
+ return ret;
+}
+
+int DrmDisplayCompositor::ApplyDpms(DrmDisplayComposition *display_comp) {
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ DrmConnector *conn = drm->GetConnectorForDisplay(display_);
+ if (!conn) {
+ ALOGE("Failed to get DrmConnector for display %d", display_);
+ return -ENODEV;
+ }
+
+ const DrmProperty &prop = conn->dpms_property();
+ int ret = drmModeConnectorSetProperty(drm->fd(), conn->id(), prop.id(),
+ display_comp->dpms_mode());
+ if (ret) {
+ ALOGE("Failed to set DPMS property for connector %d", conn->id());
+ return ret;
+ }
+ return 0;
+}
+
+std::tuple<int, uint32_t> DrmDisplayCompositor::CreateModeBlob(
+ const DrmMode &mode) {
+ struct drm_mode_modeinfo drm_mode;
+ memset(&drm_mode, 0, sizeof(drm_mode));
+ mode.ToDrmModeModeInfo(&drm_mode);
+
+ uint32_t id = 0;
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ int ret = drm->CreatePropertyBlob(&drm_mode, sizeof(struct drm_mode_modeinfo),
+ &id);
+ if (ret) {
+ ALOGE("Failed to create mode property blob %d", ret);
+ return std::make_tuple(ret, 0);
+ }
+ ALOGE("Create blob_id %" PRIu32 "\n", id);
+ return std::make_tuple(ret, id);
+}
+
+void DrmDisplayCompositor::ClearDisplay() {
+ if (!active_composition_)
+ return;
+
+ if (DisablePlanes(active_composition_.get()))
+ return;
+
+ active_composition_.reset(NULL);
+ vsync_worker_.VSyncControl(false);
+}
+
+void DrmDisplayCompositor::ApplyFrame(
+ std::unique_ptr<DrmDisplayComposition> composition, int status,
+ bool writeback) {
+ AutoLock lock(&lock_, __func__);
+ if (lock.Lock())
+ return;
+ int ret = status;
+
+ if (!ret) {
+ if (writeback && !CountdownExpired()) {
+ ALOGE("Abort playing back scene");
+ return;
+ }
+ ret = CommitFrame(composition.get(), false);
+ }
+
+ if (ret) {
+ ALOGE("Composite failed for display %d", display_);
+ // Disable the hw used by the last active composition. This allows us to
+ // signal the release fences from that composition to avoid hanging.
+ ClearDisplay();
+ return;
+ }
+ ++dump_frames_composited_;
+
+ active_composition_.swap(composition);
+
+ flatten_countdown_ = FLATTEN_COUNTDOWN_INIT;
+ if (flattening_state_ != FlatteningState::kClientRequested) {
+ SetFlattening(FlatteningState::kNone);
+ } else {
+ SetFlattening(FlatteningState::kClientDone);
+ }
+ vsync_worker_.VSyncControl(!writeback);
+}
+
+int DrmDisplayCompositor::ApplyComposition(
+ std::unique_ptr<DrmDisplayComposition> composition) {
+ int ret = 0;
+ switch (composition->type()) {
+ case DRM_COMPOSITION_TYPE_FRAME:
+ if (composition->geometry_changed()) {
+ // Send the composition to the kernel to ensure we can commit it. This
+ // is just a test, it won't actually commit the frame.
+ ret = CommitFrame(composition.get(), true);
+ if (ret) {
+ ALOGE("Commit test failed for display %d, FIXME", display_);
+ return ret;
+ }
+ }
+
+ ApplyFrame(std::move(composition), ret);
+ break;
+ case DRM_COMPOSITION_TYPE_DPMS:
+ active_ = (composition->dpms_mode() == DRM_MODE_DPMS_ON);
+ ret = ApplyDpms(composition.get());
+ if (ret)
+ ALOGE("Failed to apply dpms for display %d", display_);
+ return ret;
+ case DRM_COMPOSITION_TYPE_MODESET:
+ mode_.mode = composition->display_mode();
+ if (mode_.blob_id)
+ resource_manager_->GetDrmDevice(display_)->DestroyPropertyBlob(
+ mode_.blob_id);
+ std::tie(ret, mode_.blob_id) = CreateModeBlob(mode_.mode);
+ if (ret) {
+ ALOGE("Failed to create mode blob for display %d", display_);
+ return ret;
+ }
+ mode_.needs_modeset = true;
+ return 0;
+ default:
+ ALOGE("Unknown composition type %d", composition->type());
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+int DrmDisplayCompositor::TestComposition(DrmDisplayComposition *composition) {
+ return CommitFrame(composition, true);
+}
+
+// Flatten a scene on the display by using a writeback connector
+// and returns the composition result as a DrmHwcLayer.
+int DrmDisplayCompositor::FlattenOnDisplay(
+ std::unique_ptr<DrmDisplayComposition> &src, DrmConnector *writeback_conn,
+ DrmMode &src_mode, DrmHwcLayer *writeback_layer) {
+ int ret = 0;
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ ret = writeback_conn->UpdateModes();
+ if (ret) {
+ ALOGE("Failed to update modes %d", ret);
+ return ret;
+ }
+ for (const DrmMode &mode : writeback_conn->modes()) {
+ if (mode.h_display() == src_mode.h_display() &&
+ mode.v_display() == src_mode.v_display()) {
+ mode_.mode = mode;
+ if (mode_.blob_id)
+ drm->DestroyPropertyBlob(mode_.blob_id);
+ std::tie(ret, mode_.blob_id) = CreateModeBlob(mode_.mode);
+ if (ret) {
+ ALOGE("Failed to create mode blob for display %d", display_);
+ return ret;
+ }
+ mode_.needs_modeset = true;
+ break;
+ }
+ }
+ if (mode_.blob_id <= 0) {
+ ALOGE("Failed to find similar mode");
+ return -EINVAL;
+ }
+
+ DrmCrtc *crtc = drm->GetCrtcForDisplay(display_);
+ if (!crtc) {
+ ALOGE("Failed to find crtc for display %d", display_);
+ return -EINVAL;
+ }
+ // TODO what happens if planes could go to both CRTCs, I don't think it's
+ // handled anywhere
+ std::vector<DrmPlane *> primary_planes;
+ std::vector<DrmPlane *> overlay_planes;
+ for (auto &plane : drm->planes()) {
+ if (!plane->GetCrtcSupported(*crtc))
+ continue;
+ if (plane->type() == DRM_PLANE_TYPE_PRIMARY)
+ primary_planes.push_back(plane.get());
+ else if (plane->type() == DRM_PLANE_TYPE_OVERLAY)
+ overlay_planes.push_back(plane.get());
+ }
+
+ ret = src->Plan(&primary_planes, &overlay_planes);
+ if (ret) {
+ ALOGE("Failed to plan the composition ret = %d", ret);
+ return ret;
+ }
+
+ // Disable the planes we're not using
+ for (auto i = primary_planes.begin(); i != primary_planes.end();) {
+ src->AddPlaneDisable(*i);
+ i = primary_planes.erase(i);
+ }
+ for (auto i = overlay_planes.begin(); i != overlay_planes.end();) {
+ src->AddPlaneDisable(*i);
+ i = overlay_planes.erase(i);
+ }
+
+ AutoLock lock(&lock_, __func__);
+ ret = lock.Lock();
+ if (ret)
+ return ret;
+ DrmFramebuffer *writeback_fb = &framebuffers_[framebuffer_index_];
+ framebuffer_index_ = (framebuffer_index_ + 1) % DRM_DISPLAY_BUFFERS;
+ if (!writeback_fb->Allocate(mode_.mode.h_display(), mode_.mode.v_display())) {
+ ALOGE("Failed to allocate writeback buffer");
+ return -ENOMEM;
+ }
+ DrmHwcBuffer *writeback_buffer = &writeback_layer->buffer;
+ writeback_layer->sf_handle = writeback_fb->buffer()->handle;
+ ret = writeback_layer->ImportBuffer(
+ resource_manager_->GetImporter(display_).get());
+ if (ret) {
+ ALOGE("Failed to import writeback buffer");
+ return ret;
+ }
+
+ ret = CommitFrame(src.get(), true, writeback_conn, writeback_buffer);
+ if (ret) {
+ ALOGE("Atomic check failed");
+ return ret;
+ }
+ ret = CommitFrame(src.get(), false, writeback_conn, writeback_buffer);
+ if (ret) {
+ ALOGE("Atomic commit failed");
+ return ret;
+ }
+
+ ret = sync_wait(writeback_fence_, kWaitWritebackFence);
+ writeback_layer->acquire_fence.Set(writeback_fence_);
+ writeback_fence_ = -1;
+ if (ret) {
+ ALOGE("Failed to wait on writeback fence");
+ return ret;
+ }
+ return 0;
+}
+
+void DrmDisplayCompositor::SetFlattening(FlatteningState new_state) {
+ if (flattening_state_ != new_state) {
+ switch (flattening_state_) {
+ case FlatteningState::kClientDone:
+ case FlatteningState::kConcurrent:
+ case FlatteningState::kSerial:
+ ++frames_flattened_;
+ break;
+ case FlatteningState::kClientRequested:
+ case FlatteningState::kNone:
+ case FlatteningState::kNotNeeded:
+ break;
+ }
+ }
+ flattening_state_ = new_state;
+}
+
+bool DrmDisplayCompositor::IsFlatteningNeeded() const {
+ return CountdownExpired() && active_composition_->layers().size() >= 2;
+}
+
+int DrmDisplayCompositor::FlattenOnClient() {
+ if (refresh_display_cb_) {
+ {
+ AutoLock lock(&lock_, __func__);
+ if (!IsFlatteningNeeded()) {
+ if (flattening_state_ != FlatteningState::kClientDone) {
+ ALOGV("Flattening is not needed");
+ SetFlattening(FlatteningState::kNotNeeded);
+ }
+ return -EALREADY;
+ }
+ }
+
+ ALOGV(
+ "No writeback connector available, "
+ "falling back to client composition");
+ SetFlattening(FlatteningState::kClientRequested);
+ refresh_display_cb_(display_);
+ return 0;
+ } else {
+ ALOGV("No writeback connector available");
+ return -EINVAL;
+ }
+}
+
+// Flatten a scene by enabling the writeback connector attached
+// to the same CRTC as the one driving the display.
+int DrmDisplayCompositor::FlattenSerial(DrmConnector *writeback_conn) {
+ ALOGV("FlattenSerial by enabling writeback connector to the same crtc");
+ // Flattened composition with only one layer that is obtained
+ // using the writeback connector
+ std::unique_ptr<DrmDisplayComposition>
+ writeback_comp = CreateInitializedComposition();
+ if (!writeback_comp)
+ return -EINVAL;
+
+ AutoLock lock(&lock_, __func__);
+ int ret = lock.Lock();
+ if (ret)
+ return ret;
+ if (!IsFlatteningNeeded()) {
+ ALOGV("Flattening is not needed");
+ SetFlattening(FlatteningState::kNotNeeded);
+ return -EALREADY;
+ }
+
+ DrmFramebuffer *writeback_fb = &framebuffers_[framebuffer_index_];
+ framebuffer_index_ = (framebuffer_index_ + 1) % DRM_DISPLAY_BUFFERS;
+ lock.Unlock();
+
+ if (!writeback_fb->Allocate(mode_.mode.h_display(), mode_.mode.v_display())) {
+ ALOGE("Failed to allocate writeback buffer");
+ return -ENOMEM;
+ }
+ writeback_comp->layers().emplace_back();
+
+ DrmHwcLayer &writeback_layer = writeback_comp->layers().back();
+ writeback_layer.sf_handle = writeback_fb->buffer()->handle;
+ writeback_layer.source_crop = {0, 0, (float)mode_.mode.h_display(),
+ (float)mode_.mode.v_display()};
+ writeback_layer.display_frame = {0, 0, (int)mode_.mode.h_display(),
+ (int)mode_.mode.v_display()};
+ ret = writeback_layer.ImportBuffer(
+ resource_manager_->GetImporter(display_).get());
+ if (ret || writeback_comp->layers().size() != 1) {
+ ALOGE("Failed to import writeback buffer");
+ return ret;
+ }
+
+ drmModeAtomicReqPtr pset = drmModeAtomicAlloc();
+ if (!pset) {
+ ALOGE("Failed to allocate property set");
+ return -ENOMEM;
+ }
+ DrmDevice *drm = resource_manager_->GetDrmDevice(display_);
+ DrmCrtc *crtc = drm->GetCrtcForDisplay(display_);
+ if (!crtc) {
+ ALOGE("Failed to find crtc for display %d", display_);
+ return -EINVAL;
+ }
+ ret = SetupWritebackCommit(pset, crtc->id(), writeback_conn,
+ &writeback_layer.buffer);
+ if (ret < 0) {
+ ALOGE("Failed to Setup Writeback Commit");
+ return ret;
+ }
+ ret = drmModeAtomicCommit(drm->fd(), pset, 0, drm);
+ if (ret) {
+ ALOGE("Failed to enable writeback %d", ret);
+ return ret;
+ }
+ ret = sync_wait(writeback_fence_, kWaitWritebackFence);
+ writeback_layer.acquire_fence.Set(writeback_fence_);
+ writeback_fence_ = -1;
+ if (ret) {
+ ALOGE("Failed to wait on writeback fence");
+ return ret;
+ }
+
+ DrmCompositionPlane squashed_comp(DrmCompositionPlane::Type::kLayer, NULL,
+ crtc);
+ for (auto &drmplane : drm->planes()) {
+ if (!drmplane->GetCrtcSupported(*crtc))
+ continue;
+ if (!squashed_comp.plane() && drmplane->type() == DRM_PLANE_TYPE_PRIMARY)
+ squashed_comp.set_plane(drmplane.get());
+ else
+ writeback_comp->AddPlaneDisable(drmplane.get());
+ }
+ squashed_comp.source_layers().push_back(0);
+ ret = writeback_comp->AddPlaneComposition(std::move(squashed_comp));
+ if (ret) {
+ ALOGE("Failed to add flatten scene");
+ return ret;
+ }
+
+ ApplyFrame(std::move(writeback_comp), 0, true);
+ return 0;
+}
+
+// Flatten a scene by using a crtc which works concurrent with
+// the one driving the display.
+int DrmDisplayCompositor::FlattenConcurrent(DrmConnector *writeback_conn) {
+ ALOGV("FlattenConcurrent by using an unused crtc/display");
+ int ret = 0;
+ DrmDisplayCompositor drmdisplaycompositor;
+ ret = drmdisplaycompositor.Init(resource_manager_, writeback_conn->display());
+ if (ret) {
+ ALOGE("Failed to init drmdisplaycompositor = %d", ret);
+ return ret;
+ }
+ // Copy of the active_composition, needed because of two things:
+ // 1) Not to hold the lock for the whole time we are accessing
+ // active_composition
+ // 2) It will be committed on a crtc that might not be on the same
+ // dri node, so buffers need to be imported on the right node.
+ std::unique_ptr<DrmDisplayComposition>
+ copy_comp = drmdisplaycompositor.CreateInitializedComposition();
+
+ // Writeback composition that will be committed to the display.
+ std::unique_ptr<DrmDisplayComposition>
+ writeback_comp = CreateInitializedComposition();
+
+ if (!copy_comp || !writeback_comp)
+ return -EINVAL;
+ AutoLock lock(&lock_, __func__);
+ ret = lock.Lock();
+ if (ret)
+ return ret;
+ if (!IsFlatteningNeeded()) {
+ ALOGV("Flattening is not needed");
+ SetFlattening(FlatteningState::kNotNeeded);
+ return -EALREADY;
+ }
+ DrmCrtc *crtc = active_composition_->crtc();
+
+ std::vector<DrmHwcLayer> copy_layers;
+ for (DrmHwcLayer &src_layer : active_composition_->layers()) {
+ DrmHwcLayer copy;
+ ret = copy.InitFromDrmHwcLayer(&src_layer,
+ resource_manager_
+ ->GetImporter(writeback_conn->display())
+ .get());
+ if (ret) {
+ ALOGE("Failed to import buffer ret = %d", ret);
+ return -EINVAL;
+ }
+ copy_layers.emplace_back(std::move(copy));
+ }
+ ret = copy_comp->SetLayers(copy_layers.data(), copy_layers.size(), true);
+ if (ret) {
+ ALOGE("Failed to set copy_comp layers");
+ return ret;
+ }
+
+ lock.Unlock();
+ DrmHwcLayer writeback_layer;
+ ret = drmdisplaycompositor.FlattenOnDisplay(copy_comp, writeback_conn,
+ mode_.mode, &writeback_layer);
+ if (ret) {
+ ALOGE("Failed to flatten on display ret = %d", ret);
+ return ret;
+ }
+
+ DrmCompositionPlane squashed_comp(DrmCompositionPlane::Type::kLayer, NULL,
+ crtc);
+ for (auto &drmplane : resource_manager_->GetDrmDevice(display_)->planes()) {
+ if (!drmplane->GetCrtcSupported(*crtc))
+ continue;
+ if (drmplane->type() == DRM_PLANE_TYPE_PRIMARY)
+ squashed_comp.set_plane(drmplane.get());
+ else
+ writeback_comp->AddPlaneDisable(drmplane.get());
+ }
+ writeback_comp->layers().emplace_back();
+ DrmHwcLayer &next_layer = writeback_comp->layers().back();
+ next_layer.sf_handle = writeback_layer.get_usable_handle();
+ next_layer.blending = DrmHwcBlending::kPreMult;
+ next_layer.source_crop = {0, 0, (float)mode_.mode.h_display(),
+ (float)mode_.mode.v_display()};
+ next_layer.display_frame = {0, 0, (int)mode_.mode.h_display(),
+ (int)mode_.mode.v_display()};
+ ret = next_layer.ImportBuffer(resource_manager_->GetImporter(display_).get());
+ if (ret) {
+ ALOGE("Failed to import framebuffer for display %d", ret);
+ return ret;
+ }
+ squashed_comp.source_layers().push_back(0);
+ ret = writeback_comp->AddPlaneComposition(std::move(squashed_comp));
+ if (ret) {
+ ALOGE("Failed to add plane composition %d", ret);
+ return ret;
+ }
+ ApplyFrame(std::move(writeback_comp), 0, true);
+ return ret;
+}
+
+int DrmDisplayCompositor::FlattenActiveComposition() {
+ DrmConnector *writeback_conn = resource_manager_->AvailableWritebackConnector(
+ display_);
+ if (!active_composition_ || !writeback_conn) {
+ // Try to fallback to GPU composition on client, since it is more
+ // power-efficient than composition on device side
+ return FlattenOnClient();
+ }
+
+ if (writeback_conn->display() != display_) {
+ SetFlattening(FlatteningState::kConcurrent);
+ return FlattenConcurrent(writeback_conn);
+ } else {
+ SetFlattening(FlatteningState::kSerial);
+ return FlattenSerial(writeback_conn);
+ }
+
+ return 0;
+}
+
+bool DrmDisplayCompositor::CountdownExpired() const {
+ return flatten_countdown_ <= 0;
+}
+
+void DrmDisplayCompositor::Vsync(int display, int64_t timestamp) {
+ AutoLock lock(&lock_, __func__);
+ if (lock.Lock())
+ return;
+ flatten_countdown_--;
+ if (!CountdownExpired())
+ return;
+ lock.Unlock();
+ int ret = FlattenActiveComposition();
+ ALOGV("scene flattening triggered for display %d at timestamp %" PRIu64
+ " result = %d \n",
+ display, timestamp, ret);
+}
+
+void DrmDisplayCompositor::Dump(std::ostringstream *out) const {
+ int ret = pthread_mutex_lock(&lock_);
+ if (ret)
+ return;
+
+ uint64_t num_frames = dump_frames_composited_;
+ dump_frames_composited_ = 0;
+
+ struct timespec ts;
+ ret = clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (ret) {
+ pthread_mutex_unlock(&lock_);
+ return;
+ }
+
+ uint64_t cur_ts = ts.tv_sec * 1000 * 1000 * 1000 + ts.tv_nsec;
+ uint64_t num_ms = (cur_ts - dump_last_timestamp_ns_) / (1000 * 1000);
+ float fps = num_ms ? (num_frames * 1000.0f) / (num_ms) : 0.0f;
+
+ *out << "--DrmDisplayCompositor[" << display_
+ << "]: num_frames=" << num_frames << " num_ms=" << num_ms
+ << " fps=" << fps << "\n";
+
+ dump_last_timestamp_ns_ = cur_ts;
+
+ pthread_mutex_unlock(&lock_);
+}
+} // namespace android