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>
27 #include <cutils/properties.h>
29 #include <sync/sync.h>
33 DrmComposition::DrmComposition(DrmResources *drm, Importer *importer)
34 : drm_(drm), importer_(importer) {
35 char use_overlay_planes_prop[PROPERTY_VALUE_MAX];
36 property_get("hwc.drm.use_overlay_planes", use_overlay_planes_prop, "1");
37 bool use_overlay_planes = atoi(use_overlay_planes_prop);
39 for (DrmResources::PlaneIter iter = drm_->begin_planes();
40 iter != drm_->end_planes(); ++iter) {
41 if ((*iter)->type() == DRM_PLANE_TYPE_PRIMARY)
42 primary_planes_.push_back(*iter);
43 else if (use_overlay_planes && (*iter)->type() == DRM_PLANE_TYPE_OVERLAY)
44 overlay_planes_.push_back(*iter);
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");
58 // If the display hasn't been modeset yet, this will be NULL
59 DrmCrtc *crtc = drm_->GetCrtcForDisplay(display);
61 int ret = composition_map_[(*iter)->display()]->Init(drm_, crtc, importer_);
63 ALOGE("Failed to init display composition for %d", (*iter)->display());
70 int DrmComposition::SetLayers(size_t num_displays,
71 const DrmCompositionDisplayLayersMap *maps) {
73 for (size_t display_index = 0; display_index < num_displays;
75 const DrmCompositionDisplayLayersMap &map = maps[display_index];
76 int display = map.display;
78 ret = composition_map_[display]->SetLayers(
79 map.layers, map.num_layers, map.layer_indices, &primary_planes_,
85 return DisableUnusedPlanes();
88 int DrmComposition::SetDpmsMode(int display, uint32_t dpms_mode) {
89 return composition_map_[display]->SetDpmsMode(dpms_mode);
92 std::unique_ptr<DrmDisplayComposition> DrmComposition::TakeDisplayComposition(
94 return std::move(composition_map_[display]);
97 int DrmComposition::DisableUnusedPlanes() {
98 for (DrmResources::ConnectorIter iter = drm_->begin_connectors();
99 iter != drm_->end_connectors(); ++iter) {
100 int display = (*iter)->display();
101 DrmDisplayComposition *comp = GetDisplayComposition(display);
104 * Leave empty compositions alone
105 * TODO: re-visit this and potentially disable leftover planes after the
106 * active compositions have gobbled up all they can
108 if (comp->type() == DRM_COMPOSITION_TYPE_EMPTY)
111 DrmCrtc *crtc = drm_->GetCrtcForDisplay(display);
113 ALOGE("Failed to find crtc for display %d", display);
117 for (std::vector<DrmPlane *>::iterator iter = primary_planes_.begin();
118 iter != primary_planes_.end(); ++iter) {
119 if ((*iter)->GetCrtcSupported(*crtc)) {
120 comp->AddPlaneDisable(*iter);
121 primary_planes_.erase(iter);
125 for (std::vector<DrmPlane *>::iterator iter = overlay_planes_.begin();
126 iter != overlay_planes_.end();) {
127 if ((*iter)->GetCrtcSupported(*crtc)) {
128 comp->AddPlaneDisable(*iter);
129 iter = overlay_planes_.erase(iter);
138 DrmDisplayComposition *DrmComposition::GetDisplayComposition(int display) {
139 return composition_map_[display].get();