/*
* 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 <sched.h>
#include <stdlib.h>
#include <time.h>
#include <algorithm>
#include <bitset>
#include <cinttypes>
#include <mutex>
#include <sstream>
#include <vector>
#include <cutils/log.h>
#include <drm/drm_mode.h>
#include <sync/sync.h>
#include <utils/Trace.h>
#include "drmcrtc.h"
#include "drmplane.h"
#include "drmresources.h"
#include "glworker.h"
#define DRM_DISPLAY_COMPOSITOR_MAX_QUEUE_DEPTH 2
namespace android {
static const int64_t kSquashWait = 500LL;
void SquashState::Init(DrmHwcLayer *layers, size_t num_layers) {
generation_number_++;
valid_history_ = 0;
regions_.clear();
last_handles_.clear();
std::vector<DrmHwcRect<int>> in_rects;
for (size_t i = 0; i < num_layers; i++) {
DrmHwcLayer *layer = &layers[i];
in_rects.emplace_back(layer->display_frame);
last_handles_.push_back(layer->sf_handle);
}
std::vector<separate_rects::RectSet<uint64_t, int>> out_regions;
separate_rects::separate_rects_64(in_rects, &out_regions);
for (const separate_rects::RectSet<uint64_t, int> &out_region : out_regions) {
regions_.emplace_back();
Region ®ion = regions_.back();
region.rect = out_region.rect;
region.layer_refs = out_region.id_set.getBits();
}
}
void SquashState::GenerateHistory(DrmHwcLayer *layers, size_t num_layers,
std::vector<bool> &changed_regions) const {
changed_regions.resize(regions_.size());
if (num_layers != last_handles_.size()) {
ALOGE("SquashState::GenerateHistory expected %zu layers but got %zu layers",
last_handles_.size(), num_layers);
return;
}
std::bitset<kMaxLayers> changed_layers;
for (size_t i = 0; i < last_handles_.size(); i++) {
DrmHwcLayer *layer = &layers[i];
// Protected layers can't be squashed so we treat them as constantly
// changing.
if (layer->protected_usage() || last_handles_[i] != layer->sf_handle)
changed_layers.set(i);
}
for (size_t i = 0; i < regions_.size(); i++) {
changed_regions[i] = (regions_[i].layer_refs & changed_layers).any();
}
}
void SquashState::StableRegionsWithMarginalHistory(
const std::vector<bool> &changed_regions,
std::vector<bool> &stable_regions) const {
stable_regions.resize(regions_.size());
for (size_t i = 0; i < regions_.size(); i++) {
stable_regions[i] = !changed_regions[i] && is_stable(i);
}
}
void SquashState::RecordHistory(DrmHwcLayer *layers, size_t num_layers,
const std::vector<bool> &changed_regions) {
if (num_layers != last_handles_.size()) {
ALOGE("SquashState::RecordHistory expected %zu layers but got %zu layers",
last_handles_.size(), num_layers);
return;
}
if (changed_regions.size() != regions_.size()) {
ALOGE("SquashState::RecordHistory expected %zu regions but got %zu regions",
regions_.size(), changed_regions.size());
return;
}
for (size_t i = 0; i < last_handles_.size(); i++) {
DrmHwcLayer *layer = &layers[i];
last_handles_[i] = layer->sf_handle;
}
for (size_t i = 0; i < regions_.size(); i++) {
regions_[i].change_history <<= 1;
regions_[i].change_history.set(/* LSB */ 0, changed_regions[i]);
}
valid_history_++;
}
bool SquashState::RecordAndCompareSquashed(
const std::vector<bool> &squashed_regions) {
if (squashed_regions.size() != regions_.size()) {
ALOGE(
"SquashState::RecordAndCompareSquashed expected %zu regions but got "
"%zu regions",
regions_.size(), squashed_regions.size());
return false;
}
bool changed = false;
for (size_t i = 0; i < regions_.size(); i++) {
if (regions_[i].squashed != squashed_regions[i]) {
regions_[i].squashed = squashed_regions[i];
changed = true;
}
}
return changed;
}
void SquashState::Dump(std::ostringstream *out) const {
*out << "----SquashState generation=" << generation_number_
<< " history=" << valid_history_ << "\n"
<< " Regions: count=" << regions_.size() << "\n";
for (size_t i = 0; i < regions_.size(); i++) {
const Region ®ion = regions_[i];
*out << " [" << i << "]"
<< " history=" << region.change_history << " rect";
region.rect.Dump(out);
*out << " layers=(";
bool first = true;
for (size_t layer_index = 0; layer_index < kMaxLayers; layer_index++) {
if ((region.layer_refs &
std::bitset<kMaxLayers>((size_t)1 << layer_index))
.any()) {
if (!first)
*out << " ";
first = false;
*out << layer_index;
}
}
*out << ")";
if (region.squashed)
*out << " squashed";
*out << "\n";
}
}
static bool UsesSquash(const std::vector<DrmCompositionPlane> &comp_planes) {
return std::any_of(comp_planes.begin(), comp_planes.end(),
[](const DrmCompositionPlane &plane) {
return plane.type() == DrmCompositionPlane::Type::kSquash;
});
}
DrmDisplayCompositor::FrameWorker::FrameWorker(DrmDisplayCompositor *compositor)
: QueueWorker("frame-worker", HAL_PRIORITY_URGENT_DISPLAY),
compositor_(compositor) {
}
int DrmDisplayCompositor::FrameWorker::Init() {
set_max_queue_size(DRM_DISPLAY_COMPOSITOR_MAX_QUEUE_DEPTH);
return InitWorker();
}
void DrmDisplayCompositor::FrameWorker::QueueFrame(
std::unique_ptr<DrmDisplayComposition> composition, int status) {
std::unique_ptr<FrameState> frame(
new FrameState(std::move(composition), status));
auto start = std::chrono::high_resolution_clock::now();
int ret = QueueWork(std::move(frame));
if (ret) {
ALOGE("Unable to queue frame work (%d)", ret);
// TODO: error handling (timeout or exit)
return;
}
auto end = std::chrono::high_resolution_clock::now();
uint64_t duration_us =
std::chrono::duration_cast<std::chrono::microseconds>(end - start)
.count();
if (duration_us > max_duration_us)
max_duration_us = duration_us;
}
void DrmDisplayCompositor::FrameWorker::ProcessWork(
std::unique_ptr<FrameState> frame) {
compositor_->ApplyFrame(std::move(frame->composition), frame->status);
}
DrmDisplayCompositor::DrmDisplayCompositor()
: QueueWorker("drm-compositor", HAL_PRIORITY_URGENT_DISPLAY),
drm_(NULL),
display_(-1),
frame_worker_(this),
active_(false),
use_hw_overlays_(true),
framebuffer_index_(0),
squash_framebuffer_index_(0),
dump_frames_composited_(0),
dump_last_timestamp_ns_(0),
max_duration_us(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;
frame_worker_.Exit();
Exit();
std::lock_guard<std::mutex> lk(mutex_);
if (mode_.blob_id)
drm_->DestroyPropertyBlob(mode_.blob_id);
if (mode_.old_blob_id)
drm_->DestroyPropertyBlob(mode_.old_blob_id);
active_composition_.reset();
}
int DrmDisplayCompositor::Init(DrmResources *drm, int display) {
drm_ = drm;
display_ = display;
frame_worker_.Init();
set_max_queue_size(DRM_DISPLAY_COMPOSITOR_MAX_QUEUE_DEPTH);
set_idle_timeout(kSquashWait);
return InitWorker();
}
std::unique_ptr<DrmDisplayComposition> DrmDisplayCompositor::CreateComposition()
const {
return std::unique_ptr<DrmDisplayComposition>(new DrmDisplayComposition());
}
int DrmDisplayCompositor::QueueComposition(
std::unique_ptr<DrmDisplayComposition> composition) {
switch (composition->type()) {
case DRM_COMPOSITION_TYPE_FRAME:
if (!active_)
return -ENODEV;
break;
case DRM_COMPOSITION_TYPE_DPMS:
/*
* Update the state as soon as we get it so we can start/stop queuing
* frames asap.
*/
active_ = (composition->dpms_mode() == DRM_MODE_DPMS_ON);
break;
case DRM_COMPOSITION_TYPE_MODESET:
break;
case DRM_COMPOSITION_TYPE_EMPTY:
return 0;
default:
ALOGE("Unknown composition type %d/%d", composition->type(), display_);
return -ENOENT;
}
auto start = std::chrono::high_resolution_clock::now();
int ret = QueueWork(std::move(composition));
if (ret) {
ALOGE("Unable to queue work (%d)", ret);
// TODO: error handling (timeout or exit)
return ret;
}
auto end = std::chrono::high_resolution_clock::now();
uint64_t duration_us =
std::chrono::duration_cast<std::chrono::microseconds>(end - start)
.count();
if (duration_us > max_duration_us)
max_duration_us = duration_us;
return 0;
}
std::tuple<uint32_t, uint32_t, int>
DrmDisplayCompositor::GetActiveModeResolution() {
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::PrepareFramebuffer(
DrmFramebuffer &fb, DrmDisplayComposition *display_comp) {
int ret = fb.WaitReleased(-1);
if (ret) {
ALOGE("Failed to wait for framebuffer release %d", ret);
return ret;
}
uint32_t width, height;
std::tie(width, height, ret) = GetActiveModeResolution();
if (ret) {
ALOGE(
"Failed to allocate framebuffer because the display resolution could "
"not be determined %d",
ret);
return ret;
}
fb.set_release_fence_fd(-1);
if (!fb.Allocate(width, height)) {
ALOGE("Failed to allocate framebuffer with size %dx%d", width, height);
return -ENOMEM;
}
display_comp->layers().emplace_back();
DrmHwcLayer &pre_comp_layer = display_comp->layers().back();
pre_comp_layer.sf_handle = fb.buffer()->handle;
pre_comp_layer.blending = DrmHwcBlending::kPreMult;
pre_comp_layer.source_crop = DrmHwcRect<float>(0, 0, width, height);
pre_comp_layer.display_frame = DrmHwcRect<int>(0, 0, width, height);
ret = pre_comp_layer.buffer.ImportBuffer(fb.buffer()->handle,
display_comp->importer());
if (ret) {
ALOGE("Failed to import framebuffer for display %d", ret);
return ret;
}
return ret;
}
int DrmDisplayCompositor::ApplySquash(DrmDisplayComposition *display_comp) {
int ret = 0;
DrmFramebuffer &fb = squash_framebuffers_[squash_framebuffer_index_];
ret = PrepareFramebuffer(fb, display_comp);
if (ret) {
ALOGE("Failed to prepare framebuffer for squash %d", ret);
return ret;
}
std::vector<DrmCompositionRegion> ®ions = display_comp->squash_regions();
ret = pre_compositor_->Composite(display_comp->layers().data(),
regions.data(), regions.size(), fb.buffer());
pre_compositor_->Finish();
if (ret) {
ALOGE("Failed to squash layers");
return ret;
}
ret = display_comp->CreateNextTimelineFence();
if (ret <= 0) {
ALOGE("Failed to create squash framebuffer release fence %d", ret);
return ret;
}
fb.set_release_fence_fd(ret);
display_comp->SignalSquashDone();
return 0;
}
int DrmDisplayCompositor::ApplyPreComposite(
DrmDisplayComposition *display_comp) {
int ret = 0;
DrmFramebuffer &fb = framebuffers_[framebuffer_index_];
ret = PrepareFramebuffer(fb, display_comp);
if (ret) {
ALOGE("Failed to prepare framebuffer for pre-composite %d", ret);
return ret;
}
std::vector<DrmCompositionRegion> ®ions = display_comp->pre_comp_regions();
ret = pre_compositor_->Composite(display_comp->layers().data(),
regions.data(), regions.size(), fb.buffer());
pre_compositor_->Finish();
if (ret) {
ALOGE("Failed to pre-composite layers");
return ret;
}
ret = display_comp->CreateNextTimelineFence();
if (ret <= 0) {
ALOGE("Failed to create pre-composite framebuffer release fence %d", ret);
return ret;
}
fb.set_release_fence_fd(ret);
display_comp->SignalPreCompDone();
return 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;
}
}
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::PrepareFrame(DrmDisplayComposition *display_comp) {
int ret = 0;
std::vector<DrmHwcLayer> &layers = display_comp->layers();
std::vector<DrmCompositionPlane> &comp_planes =
display_comp->composition_planes();
std::vector<DrmCompositionRegion> &squash_regions =
display_comp->squash_regions();
std::vector<DrmCompositionRegion> &pre_comp_regions =
display_comp->pre_comp_regions();
int squash_layer_index = -1;
if (squash_regions.size() > 0) {
squash_framebuffer_index_ = (squash_framebuffer_index_ + 1) % 2;
ret = ApplySquash(display_comp);
if (ret)
return ret;
squash_layer_index = layers.size() - 1;
} else {
if (UsesSquash(comp_planes)) {
DrmFramebuffer &fb = squash_framebuffers_[squash_framebuffer_index_];
layers.emplace_back();
squash_layer_index = layers.size() - 1;
DrmHwcLayer &squash_layer = layers.back();
ret = squash_layer.buffer.ImportBuffer(fb.buffer()->handle,
display_comp->importer());
if (ret) {
ALOGE("Failed to import old squashed framebuffer %d", ret);
return ret;
}
squash_layer.sf_handle = fb.buffer()->handle;
squash_layer.blending = DrmHwcBlending::kPreMult;
squash_layer.source_crop = DrmHwcRect<float>(
0, 0, squash_layer.buffer->width, squash_layer.buffer->height);
squash_layer.display_frame = DrmHwcRect<int>(
0, 0, squash_layer.buffer->width, squash_layer.buffer->height);
ret = display_comp->CreateNextTimelineFence();
if (ret <= 0) {
ALOGE("Failed to create squash framebuffer release fence %d", ret);
return ret;
}
fb.set_release_fence_fd(ret);
ret = 0;
}
}
bool do_pre_comp = pre_comp_regions.size() > 0;
int pre_comp_layer_index = -1;
if (do_pre_comp) {
ret = ApplyPreComposite(display_comp);
if (ret)
return ret;
pre_comp_layer_index = layers.size() - 1;
framebuffer_index_ = (framebuffer_index_ + 1) % DRM_DISPLAY_BUFFERS;
}
for (DrmCompositionPlane &comp_plane : comp_planes) {
std::vector<size_t> &source_layers = comp_plane.source_layers();
switch (comp_plane.type()) {
case DrmCompositionPlane::Type::kSquash:
if (source_layers.size())
ALOGE("Squash source_layers is expected to be empty (%zu/%d)",
source_layers[0], squash_layer_index);
source_layers.push_back(squash_layer_index);
break;
case DrmCompositionPlane::Type::kPrecomp:
if (!do_pre_comp) {
ALOGE(
"Can not use pre composite framebuffer with no pre composite "
"regions");
return -EINVAL;
}
// Replace source_layers with the output of the precomposite
source_layers.clear();
source_layers.push_back(pre_comp_layer_index);
break;
default:
break;
}
}
return ret;
}
int DrmDisplayCompositor::CommitFrame(DrmDisplayComposition *display_comp,
bool test_only) {
ATRACE_CALL();
int ret = 0;
std::vector<DrmHwcLayer> &layers = display_comp->layers();
std::vector<DrmCompositionPlane> &comp_planes =
display_comp->composition_planes();
std::vector<DrmCompositionRegion> &pre_comp_regions =
display_comp->pre_comp_regions();
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 (mode_.needs_modeset) {
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;
DrmHwcRect<int> display_frame;
DrmHwcRect<float> source_crop;
uint64_t rotation = 0;
uint64_t alpha = 0xFF;
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 (!test_only && layer.acquire_fence.get() >= 0) {
int acquire_fence = layer.acquire_fence.get();
int total_fence_timeout = 0;
for (int i = 0; i < kAcquireWaitTries; ++i) {
int fence_timeout = kAcquireWaitTimeoutMs * (1 << i);
total_fence_timeout += fence_timeout;
ret = sync_wait(acquire_fence, fence_timeout);
if (ret)
ALOGW("Acquire fence %d wait %d failed (%d). Total time %d",
acquire_fence, i, ret, total_fence_timeout);
}
if (ret) {
ALOGE("Failed to wait for acquire %d/%d", acquire_fence, ret);
break;
}
layer.acquire_fence.Close();
}
if (!layer.buffer) {
ALOGE("Expected a valid framebuffer for pset");
break;
}
fb_id = layer.buffer->fb_id;
display_frame = layer.display_frame;
source_crop = layer.source_crop;
if (layer.blending == DrmHwcBlending::kPreMult)
alpha = layer.alpha;
rotation = 0;
if (layer.transform & DrmHwcTransform::kFlipH)
rotation |= 1 << DRM_REFLECT_X;
if (layer.transform & DrmHwcTransform::kFlipV)
rotation |= 1 << DRM_REFLECT_Y;
if (layer.transform & DrmHwcTransform::kRotate90)
rotation |= 1 << DRM_ROTATE_90;
else if (layer.transform & DrmHwcTransform::kRotate180)
rotation |= 1 << DRM_ROTATE_180;
else if (layer.transform & DrmHwcTransform::kRotate270)
rotation |= 1 << DRM_ROTATE_270;
}
// 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;
}
// TODO: Once we have atomic test, this should fall back to GL
if (rotation && plane->rotation_property().id() == 0) {
ALOGE("Rotation is not supported on plane %d", plane->id());
ret = -EINVAL;
break;
}
// TODO: Once we have atomic test, this should fall back to GL
if (alpha != 0xFF && plane->alpha_property().id() == 0) {
ALOGE("Alpha is not supported on plane %d", plane->id());
ret = -EINVAL;
break;
}
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;
}
}
}
out:
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)
ALOGI("Commit test pset failed ret=%d\n", ret);
else
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;
}
return ret;
}
int DrmDisplayCompositor::ApplyDpms(DrmDisplayComposition *display_comp) {
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;
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() {
std::lock_guard<std::mutex> lk(mutex_);
if (!active_composition_)
return;
if (DisablePlanes(active_composition_.get()))
return;
active_composition_->SignalCompositionDone();
active_composition_.reset(NULL);
}
void DrmDisplayCompositor::ApplyFrame(
std::unique_ptr<DrmDisplayComposition> composition, int status) {
int ret = status;
if (!ret)
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_;
if (active_composition_)
active_composition_->SignalCompositionDone();
std::lock_guard<std::mutex> lk(mutex_);
active_composition_.swap(composition);
}
void DrmDisplayCompositor::ProcessWork(
std::unique_ptr<DrmDisplayComposition> composition) {
ATRACE_CALL();
if (!pre_compositor_) {
pre_compositor_.reset(new GLWorkerCompositor());
int ret = pre_compositor_->Init();
if (ret) {
ALOGE("Failed to initialize OpenGL compositor %d", ret);
return;
}
}
int ret;
switch (composition->type()) {
case DRM_COMPOSITION_TYPE_FRAME:
ret = PrepareFrame(composition.get());
if (ret) {
ALOGE("Failed to prepare frame for display %d", display_);
return;
}
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. If rejected,
// squash the frame into one layer and use the squashed composition
ret = CommitFrame(composition.get(), true);
if (ret)
ALOGI("Commit test failed, squashing frame for display %d", display_);
use_hw_overlays_ = !ret;
}
// If use_hw_overlays_ is false, we can't use hardware to composite the
// frame. So squash all layers into a single composition and queue that
// instead.
if (!use_hw_overlays_) {
std::unique_ptr<DrmDisplayComposition> squashed = CreateComposition();
ret = SquashFrame(composition.get(), squashed.get());
if (!ret) {
composition = std::move(squashed);
} else {
ALOGE("Failed to squash frame 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;
}
}
frame_worker_.QueueFrame(std::move(composition), ret);
break;
case DRM_COMPOSITION_TYPE_DPMS:
ret = ApplyDpms(composition.get());
if (ret)
ALOGE("Failed to apply dpms for display %d", display_);
break;
case DRM_COMPOSITION_TYPE_MODESET:
mode_.mode = composition->display_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;
}
mode_.needs_modeset = true;
break;
default:
ALOGE("Unknown composition type %d", composition->type());
break;
}
}
int DrmDisplayCompositor::SquashAll() {
std::unique_lock<std::mutex> lk(mutex_);
int ret;
if (!active_composition_)
return 0;
std::unique_ptr<DrmDisplayComposition> comp = CreateComposition();
ret = SquashFrame(active_composition_.get(), comp.get());
// ApplyFrame needs the lock
lk.unlock();
if (!ret)
ApplyFrame(std::move(comp), 0);
return ret;
}
// Returns:
// - 0 if src is successfully squashed into dst
// - -EALREADY if the src is already squashed
// - Appropriate error if the squash fails
int DrmDisplayCompositor::SquashFrame(DrmDisplayComposition *src,
DrmDisplayComposition *dst) {
if (src->type() != DRM_COMPOSITION_TYPE_FRAME)
return -ENOTSUP;
std::vector<DrmCompositionPlane> &src_planes = src->composition_planes();
std::vector<DrmHwcLayer> &src_layers = src->layers();
// Make sure there is more than one layer to squash.
size_t src_planes_with_layer = std::count_if(
src_planes.begin(), src_planes.end(), [](DrmCompositionPlane &p) {
return p.type() != DrmCompositionPlane::Type::kDisable;
});
if (src_planes_with_layer <= 1)
return -EALREADY;
int pre_comp_layer_index;
int ret = dst->Init(drm_, src->crtc(), src->importer(), src->planner(),
src->frame_no());
if (ret) {
ALOGE("Failed to init squash all composition %d", ret);
return ret;
}
DrmCompositionPlane squashed_comp(DrmCompositionPlane::Type::kPrecomp, NULL,
src->crtc());
std::vector<DrmHwcLayer> dst_layers;
for (DrmCompositionPlane &comp_plane : src_planes) {
// Composition planes without DRM planes should never happen
if (comp_plane.plane() == NULL) {
ALOGE("Skipping squash all because of NULL plane");
ret = -EINVAL;
goto move_layers_back;
}
if (comp_plane.type() == DrmCompositionPlane::Type::kDisable) {
dst->AddPlaneDisable(comp_plane.plane());
continue;
}
for (auto i : comp_plane.source_layers()) {
DrmHwcLayer &layer = src_layers[i];
// Squashing protected layers is impossible.
if (layer.protected_usage()) {
ret = -ENOTSUP;
goto move_layers_back;
}
// The OutputFds point to freed memory after hwc_set returns. They are
// returned to the default to prevent DrmDisplayComposition::Plan from
// filling the OutputFds.
layer.release_fence = OutputFd();
dst_layers.emplace_back(std::move(layer));
squashed_comp.source_layers().push_back(
squashed_comp.source_layers().size());
}
if (comp_plane.plane()->type() == DRM_PLANE_TYPE_PRIMARY)
squashed_comp.set_plane(comp_plane.plane());
else
dst->AddPlaneDisable(comp_plane.plane());
}
ret = dst->SetLayers(dst_layers.data(), dst_layers.size(), false);
if (ret) {
ALOGE("Failed to set layers for squash all composition %d", ret);
goto move_layers_back;
}
ret = dst->AddPlaneComposition(std::move(squashed_comp));
if (ret) {
ALOGE("Failed to add squashed plane composition %d", ret);
goto move_layers_back;
}
ret = dst->FinalizeComposition();
if (ret) {
ALOGE("Failed to plan for squash all composition %d", ret);
goto move_layers_back;
}
ret = ApplyPreComposite(dst);
if (ret) {
ALOGE("Failed to pre-composite for squash all composition %d", ret);
goto move_layers_back;
}
pre_comp_layer_index = dst->layers().size() - 1;
framebuffer_index_ = (framebuffer_index_ + 1) % DRM_DISPLAY_BUFFERS;
for (DrmCompositionPlane &plane : dst->composition_planes()) {
if (plane.type() == DrmCompositionPlane::Type::kPrecomp) {
// Replace source_layers with the output of the precomposite
plane.source_layers().clear();
plane.source_layers().push_back(pre_comp_layer_index);
break;
}
}
return 0;
// TODO(zachr): think of a better way to transfer ownership back to the active
// composition.
move_layers_back:
for (size_t plane_index = 0;
plane_index < src_planes.size() && plane_index < dst_layers.size();) {
if (src_planes[plane_index].source_layers().empty()) {
plane_index++;
continue;
}
for (auto i : src_planes[plane_index].source_layers())
src_layers[i] = std::move(dst_layers[plane_index++]);
}
return ret;
}
void DrmDisplayCompositor::Dump(std::ostringstream *out) const {
std::lock_guard<std::mutex> lk(mutex_);
uint64_t num_frames = dump_frames_composited_;
dump_frames_composited_ = 0;
struct timespec ts;
int ret = clock_gettime(CLOCK_MONOTONIC, &ts);
if (ret) {
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;
*out << "----Jank Stats: "
<< " compositor_max_q_wait_us=" << max_duration_us
<< " frameworker_max_q_wait_us=" << frame_worker_.max_duration_us
<< "\n";
max_duration_us = 0;
frame_worker_.max_duration_us = 0;
if (active_composition_)
active_composition_->Dump(out);
squash_state_.Dump(out);
}
void DrmDisplayCompositor::ProcessIdle() {
SquashAll();
}
}