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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/ozone/platform/drm/gpu/crtc_controller.h"
#include "base/logging.h"
#include "base/time/time.h"
#include "ui/ozone/platform/drm/gpu/drm_device.h"
#include "ui/ozone/platform/drm/gpu/page_flip_request.h"
#include "ui/ozone/platform/drm/gpu/scanout_buffer.h"
namespace ui {
CrtcController::CrtcController(const scoped_refptr<DrmDevice>& drm,
uint32_t crtc,
uint32_t connector)
: drm_(drm),
crtc_(crtc),
connector_(connector),
is_disabled_(true),
time_of_last_flip_(0) {
}
CrtcController::~CrtcController() {
if (!is_disabled_) {
SetCursor(nullptr);
drm_->DisableCrtc(crtc_);
SignalPageFlipRequest();
}
}
bool CrtcController::Modeset(const OverlayPlane& plane, drmModeModeInfo mode) {
if (!drm_->SetCrtc(crtc_, plane.buffer->GetFramebufferId(),
std::vector<uint32_t>(1, connector_), &mode)) {
PLOG(ERROR) << "Failed to modeset: crtc=" << crtc_
<< " connector=" << connector_
<< " framebuffer_id=" << plane.buffer->GetFramebufferId()
<< " mode=" << mode.hdisplay << "x" << mode.vdisplay << "@"
<< mode.vrefresh;
return false;
}
mode_ = mode;
pending_planes_.clear();
is_disabled_ = false;
// drmModeSetCrtc has an immediate effect, so we can assume that the current
// planes have been updated. However if a page flip is still pending, set the
// pending planes to the same values so that the callback keeps the correct
// state.
current_planes_ = std::vector<OverlayPlane>(1, plane);
if (page_flip_request_.get())
pending_planes_ = current_planes_;
ResetCursor();
return true;
}
bool CrtcController::Disable() {
if (is_disabled_)
return true;
is_disabled_ = true;
return drm_->DisableCrtc(crtc_);
}
bool CrtcController::SchedulePageFlip(
HardwareDisplayPlaneList* plane_list,
const OverlayPlaneList& overlays,
bool test_only,
scoped_refptr<PageFlipRequest> page_flip_request) {
DCHECK(!page_flip_request_.get());
DCHECK(!is_disabled_);
const OverlayPlane* primary = OverlayPlane::GetPrimaryPlane(overlays);
if (!primary) {
LOG(ERROR) << "No primary plane to display on crtc " << crtc_;
page_flip_request->Signal();
return true;
}
DCHECK(primary->buffer.get());
if (primary->buffer->GetSize() != gfx::Size(mode_.hdisplay, mode_.vdisplay)) {
VLOG(2) << "Trying to pageflip a buffer with the wrong size. Expected "
<< mode_.hdisplay << "x" << mode_.vdisplay << " got "
<< primary->buffer->GetSize().ToString() << " for"
<< " crtc=" << crtc_ << " connector=" << connector_;
page_flip_request->Signal();
return true;
}
if (!drm_->plane_manager()->AssignOverlayPlanes(plane_list, overlays, crtc_,
this)) {
PLOG(ERROR) << "Failed to assign overlay planes for crtc " << crtc_;
page_flip_request->Signal();
return false;
}
if (test_only) {
page_flip_request->Signal();
} else {
pending_planes_ = overlays;
page_flip_request_ = page_flip_request;
}
return true;
}
void CrtcController::PageFlipFailed() {
pending_planes_.clear();
SignalPageFlipRequest();
}
void CrtcController::OnPageFlipEvent(unsigned int frame,
unsigned int seconds,
unsigned int useconds) {
time_of_last_flip_ =
static_cast<uint64_t>(seconds) * base::Time::kMicrosecondsPerSecond +
useconds;
current_planes_.clear();
current_planes_.swap(pending_planes_);
SignalPageFlipRequest();
}
bool CrtcController::SetCursor(const scoped_refptr<ScanoutBuffer>& buffer) {
DCHECK(!is_disabled_ || !buffer);
cursor_buffer_ = buffer;
return ResetCursor();
}
bool CrtcController::MoveCursor(const gfx::Point& location) {
DCHECK(!is_disabled_);
return drm_->MoveCursor(crtc_, location);
}
bool CrtcController::ResetCursor() {
uint32_t handle = 0;
gfx::Size size;
if (cursor_buffer_) {
handle = cursor_buffer_->GetHandle();
size = cursor_buffer_->GetSize();
}
bool status = drm_->SetCursor(crtc_, handle, size);
if (!status) {
PLOG(ERROR) << "drmModeSetCursor: device " << drm_->device_path().value()
<< " crtc " << crtc_ << " handle " << handle << " size "
<< size.ToString();
}
return status;
}
void CrtcController::SignalPageFlipRequest() {
if (page_flip_request_.get()) {
// If another frame is queued up and available immediately, calling Signal()
// may result in a call to SchedulePageFlip(), which will override
// page_flip_request_ and possibly release the ref. Stash previous request
// locally to avoid deleting the object we are making a call on.
scoped_refptr<PageFlipRequest> last_request;
last_request.swap(page_flip_request_);
last_request->Signal();
}
}
} // namespace ui
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