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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      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
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     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.
     15  */
     16 
     17 #include <DeviceInfo.h>
     18 
     19 #include "Properties.h"
     20 
     21 #include <gui/ISurfaceComposer.h>
     22 #include <gui/SurfaceComposerClient.h>
     23 #include <ui/GraphicTypes.h>
     24 
     25 #include <mutex>
     26 #include <thread>
     27 
     28 #include <log/log.h>
     29 
     30 namespace android {
     31 namespace uirenderer {
     32 
     33 static constexpr android::DisplayInfo sDummyDisplay{
     34         1080,   // w
     35         1920,   // h
     36         320.0,  // xdpi
     37         320.0,  // ydpi
     38         60.0,   // fps
     39         2.0,    // density
     40         0,      // orientation
     41         false,  // secure?
     42         0,      // appVsyncOffset
     43         0,      // presentationDeadline
     44         1080,   // viewportW
     45         1920,   // viewportH
     46 };
     47 
     48 DeviceInfo* DeviceInfo::get() {
     49         static DeviceInfo sDeviceInfo;
     50         return &sDeviceInfo;
     51 }
     52 
     53 static DisplayInfo QueryDisplayInfo() {
     54     if (Properties::isolatedProcess) {
     55         return sDummyDisplay;
     56     }
     57 
     58     const sp<IBinder> token = SurfaceComposerClient::getInternalDisplayToken();
     59     LOG_ALWAYS_FATAL_IF(token == nullptr,
     60                         "Failed to get display info because internal display is disconnected");
     61 
     62     DisplayInfo displayInfo;
     63     status_t status = SurfaceComposerClient::getDisplayInfo(token, &displayInfo);
     64     LOG_ALWAYS_FATAL_IF(status, "Failed to get display info, error %d", status);
     65     return displayInfo;
     66 }
     67 
     68 static float QueryMaxRefreshRate() {
     69     if (Properties::isolatedProcess) {
     70         return sDummyDisplay.fps;
     71     }
     72 
     73     const sp<IBinder> token = SurfaceComposerClient::getInternalDisplayToken();
     74     LOG_ALWAYS_FATAL_IF(token == nullptr,
     75                         "Failed to get display info because internal display is disconnected");
     76 
     77     Vector<DisplayInfo> configs;
     78     configs.reserve(10);
     79     status_t status = SurfaceComposerClient::getDisplayConfigs(token, &configs);
     80     LOG_ALWAYS_FATAL_IF(status, "Failed to getDisplayConfigs, error %d", status);
     81     LOG_ALWAYS_FATAL_IF(configs.size() == 0, "getDisplayConfigs returned 0 configs?");
     82     float max = 0.0f;
     83     for (auto& info : configs) {
     84         max = std::max(max, info.fps);
     85     }
     86     return max;
     87 }
     88 
     89 static void queryWideColorGamutPreference(sk_sp<SkColorSpace>* colorSpace, SkColorType* colorType) {
     90     if (Properties::isolatedProcess) {
     91         *colorSpace = SkColorSpace::MakeSRGB();
     92         *colorType = SkColorType::kN32_SkColorType;
     93         return;
     94     }
     95     ui::Dataspace defaultDataspace, wcgDataspace;
     96     ui::PixelFormat defaultPixelFormat, wcgPixelFormat;
     97     status_t status =
     98         SurfaceComposerClient::getCompositionPreference(&defaultDataspace, &defaultPixelFormat,
     99                                                         &wcgDataspace, &wcgPixelFormat);
    100     LOG_ALWAYS_FATAL_IF(status, "Failed to get composition preference, error %d", status);
    101     switch (wcgDataspace) {
    102         case ui::Dataspace::DISPLAY_P3:
    103             *colorSpace = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, SkNamedGamut::kDCIP3);
    104             break;
    105         case ui::Dataspace::V0_SCRGB:
    106             *colorSpace = SkColorSpace::MakeSRGB();
    107             break;
    108         case ui::Dataspace::V0_SRGB:
    109             // when sRGB is returned, it means wide color gamut is not supported.
    110             *colorSpace = SkColorSpace::MakeSRGB();
    111             break;
    112         default:
    113             LOG_ALWAYS_FATAL("Unreachable: unsupported wide color space.");
    114     }
    115     switch (wcgPixelFormat) {
    116         case ui::PixelFormat::RGBA_8888:
    117             *colorType = SkColorType::kN32_SkColorType;
    118             break;
    119         case ui::PixelFormat::RGBA_FP16:
    120             *colorType = SkColorType::kRGBA_F16_SkColorType;
    121             break;
    122         default:
    123             LOG_ALWAYS_FATAL("Unreachable: unsupported pixel format.");
    124     }
    125 }
    126 
    127 DeviceInfo::DeviceInfo() : mMaxRefreshRate(QueryMaxRefreshRate()) {
    128 #if HWUI_NULL_GPU
    129         mMaxTextureSize = NULL_GPU_MAX_TEXTURE_SIZE;
    130 #else
    131         mMaxTextureSize = -1;
    132 #endif
    133     mDisplayInfo = QueryDisplayInfo();
    134     queryWideColorGamutPreference(&mWideColorSpace, &mWideColorType);
    135 }
    136 
    137 int DeviceInfo::maxTextureSize() const {
    138     LOG_ALWAYS_FATAL_IF(mMaxTextureSize < 0, "MaxTextureSize has not been initialized yet.");
    139     return mMaxTextureSize;
    140 }
    141 
    142 void DeviceInfo::setMaxTextureSize(int maxTextureSize) {
    143     DeviceInfo::get()->mMaxTextureSize = maxTextureSize;
    144 }
    145 
    146 void DeviceInfo::onDisplayConfigChanged() {
    147     mDisplayInfo = QueryDisplayInfo();
    148 }
    149 
    150 } /* namespace uirenderer */
    151 } /* namespace android */
    152