2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #define LOG_TAG "hwc-drm-composition"
19 #include "drmcomposition.h"
22 #include "drmresources.h"
26 #include <cutils/log.h>
28 #include <sync/sync.h>
32 static const bool kUseOverlayPlanes = true;
34 DrmComposition::DrmComposition(DrmResources *drm, Importer *importer)
35 : drm_(drm), importer_(importer) {
36 for (DrmResources::PlaneIter iter = drm_->begin_planes();
37 iter != drm_->end_planes(); ++iter) {
38 if ((*iter)->type() == DRM_PLANE_TYPE_PRIMARY)
39 primary_planes_.push_back(*iter);
40 else if (kUseOverlayPlanes && (*iter)->type() == DRM_PLANE_TYPE_OVERLAY)
41 overlay_planes_.push_back(*iter);
45 DrmComposition::~DrmComposition() {
48 int DrmComposition::Init() {
49 for (DrmResources::ConnectorIter iter = drm_->begin_connectors();
50 iter != drm_->end_connectors(); ++iter) {
51 int display = (*iter)->display();
52 composition_map_[display].reset(new DrmDisplayComposition());
53 if (!composition_map_[display]) {
54 ALOGE("Failed to allocate new display composition\n");
57 int ret = composition_map_[(*iter)->display()]->Init(drm_, importer_);
59 ALOGE("Failed to init display composition for %d", (*iter)->display());
66 unsigned DrmComposition::GetRemainingLayers(int /*display*/,
67 unsigned num_needed) const {
71 int DrmComposition::AddLayer(int display, hwc_layer_1_t *layer,
73 DrmCrtc *crtc = drm_->GetCrtcForDisplay(display);
75 ALOGE("Failed to find crtc for display %d", display);
79 // Find a plane for the layer
80 DrmPlane *plane = NULL;
81 for (std::vector<DrmPlane *>::iterator iter = primary_planes_.begin();
82 iter != primary_planes_.end(); ++iter) {
83 if ((*iter)->GetCrtcSupported(*crtc)) {
85 primary_planes_.erase(iter);
89 for (std::vector<DrmPlane *>::iterator iter = overlay_planes_.begin();
90 !plane && iter != overlay_planes_.end(); ++iter) {
91 if ((*iter)->GetCrtcSupported(*crtc)) {
93 overlay_planes_.erase(iter);
97 return composition_map_[display]->AddLayer(layer, bo, crtc, plane);
100 int DrmComposition::AddDpmsMode(int display, uint32_t dpms_mode) {
101 return composition_map_[display]->AddDpmsMode(dpms_mode);
104 std::unique_ptr<DrmDisplayComposition> DrmComposition::TakeDisplayComposition(
106 return std::move(composition_map_[display]);
109 int DrmComposition::DisableUnusedPlanes() {
110 for (DrmResources::ConnectorIter iter = drm_->begin_connectors();
111 iter != drm_->end_connectors(); ++iter) {
112 int display = (*iter)->display();
113 DrmDisplayComposition *comp = GetDisplayComposition(display);
116 * Leave empty compositions alone
117 * TODO: re-visit this and potentially disable leftover planes after the
118 * active compositions have gobbled up all they can
120 if (comp->type() == DRM_COMPOSITION_TYPE_EMPTY)
123 DrmCrtc *crtc = drm_->GetCrtcForDisplay(display);
125 ALOGE("Failed to find crtc for display %d", display);
129 for (std::vector<DrmPlane *>::iterator iter = primary_planes_.begin();
130 iter != primary_planes_.end(); ++iter) {
131 if ((*iter)->GetCrtcSupported(*crtc)) {
132 comp->AddPlaneDisable(*iter);
133 primary_planes_.erase(iter);
137 for (std::vector<DrmPlane *>::iterator iter = overlay_planes_.begin();
138 iter != overlay_planes_.end();) {
139 if ((*iter)->GetCrtcSupported(*crtc)) {
140 comp->AddPlaneDisable(*iter);
141 iter = overlay_planes_.erase(iter);
150 DrmDisplayComposition *DrmComposition::GetDisplayComposition(int display) {
151 return composition_map_[display].get();