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      1 /*
      2  * Copyright 2016 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 <android/frameworks/vr/composer/1.0/IVrComposerClient.h>
     18 #include <hardware/gralloc.h>
     19 #include <hardware/gralloc1.h>
     20 #include <log/log.h>
     21 
     22 #include <memory>
     23 
     24 #include "impl/vr_hwc.h"
     25 #include "impl/vr_composer_client.h"
     26 
     27 namespace android {
     28 namespace dvr {
     29 
     30 using android::hardware::graphics::common::V1_0::PixelFormat;
     31 using android::frameworks::vr::composer::V1_0::IVrComposerClient;
     32 
     33 VrComposerClient::VrComposerClient(dvr::VrHwc& hal)
     34     : ComposerClient(&hal), mVrHal(hal) {
     35   if (!init()) {
     36       LOG_ALWAYS_FATAL("failed to initialize VrComposerClient");
     37   }
     38 }
     39 
     40 VrComposerClient::~VrComposerClient() {}
     41 
     42 std::unique_ptr<ComposerCommandEngine>
     43 VrComposerClient::createCommandEngine() {
     44   return std::make_unique<VrCommandEngine>(*this);
     45 }
     46 
     47 VrComposerClient::VrCommandEngine::VrCommandEngine(VrComposerClient& client)
     48     : ComposerCommandEngine(client.mHal, client.mResources.get()),
     49       mVrHal(client.mVrHal) {}
     50 
     51 VrComposerClient::VrCommandEngine::~VrCommandEngine() {}
     52 
     53 bool VrComposerClient::VrCommandEngine::executeCommand(
     54     IComposerClient::Command command, uint16_t length) {
     55   IVrComposerClient::VrCommand vrCommand =
     56       static_cast<IVrComposerClient::VrCommand>(command);
     57   switch (vrCommand) {
     58     case IVrComposerClient::VrCommand::SET_LAYER_INFO:
     59       return executeSetLayerInfo(length);
     60     case IVrComposerClient::VrCommand::SET_CLIENT_TARGET_METADATA:
     61       return executeSetClientTargetMetadata(length);
     62     case IVrComposerClient::VrCommand::SET_LAYER_BUFFER_METADATA:
     63       return executeSetLayerBufferMetadata(length);
     64     default:
     65       return ComposerCommandEngine::executeCommand(command, length);
     66   }
     67 }
     68 
     69 bool VrComposerClient::VrCommandEngine::executeSetLayerInfo(uint16_t length) {
     70   if (length != 2) {
     71     return false;
     72   }
     73 
     74   auto err = mVrHal.setLayerInfo(mCurrentDisplay, mCurrentLayer, read(), read());
     75   if (err != Error::NONE) {
     76     mWriter.setError(getCommandLoc(), err);
     77   }
     78 
     79   return true;
     80 }
     81 
     82 bool VrComposerClient::VrCommandEngine::executeSetClientTargetMetadata(
     83     uint16_t length) {
     84   if (length != 7)
     85     return false;
     86 
     87   auto err = mVrHal.setClientTargetMetadata(mCurrentDisplay, readBufferMetadata());
     88   if (err != Error::NONE)
     89     mWriter.setError(getCommandLoc(), err);
     90 
     91   return true;
     92 }
     93 
     94 bool VrComposerClient::VrCommandEngine::executeSetLayerBufferMetadata(
     95     uint16_t length) {
     96   if (length != 7)
     97     return false;
     98 
     99   auto err = mVrHal.setLayerBufferMetadata(mCurrentDisplay, mCurrentLayer,
    100                                            readBufferMetadata());
    101   if (err != Error::NONE)
    102     mWriter.setError(getCommandLoc(), err);
    103 
    104   return true;
    105 }
    106 
    107 IVrComposerClient::BufferMetadata
    108 VrComposerClient::VrCommandEngine::readBufferMetadata() {
    109   IVrComposerClient::BufferMetadata metadata = {
    110     .width = read(),
    111     .height = read(),
    112     .stride = read(),
    113     .layerCount = read(),
    114     .format = static_cast<PixelFormat>(readSigned()),
    115     .usage = read64(),
    116   };
    117   return metadata;
    118 }
    119 
    120 }  // namespace dvr
    121 }  // namespace android
    122