1 /*
2 * Copyright 2019 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 #define LOG_TAG "ComposerResources 2.2"
18
19 #include "composer-resources/2.2/ComposerResources.h"
20
21 namespace android {
22 namespace hardware {
23 namespace graphics {
24 namespace composer {
25 namespace V2_2 {
26 namespace hal {
27
28 using V2_1::Display;
29 using V2_1::Error;
30 using V2_1::Layer;
31 using V2_1::hal::ComposerHandleCache;
32 using V2_1::hal::ComposerHandleImporter;
33
getReadbackBuffer(const native_handle_t * inHandle,const native_handle_t ** outHandle,const native_handle ** outReplacedHandle)34 Error ComposerDisplayResource::getReadbackBuffer(const native_handle_t* inHandle,
35 const native_handle_t** outHandle,
36 const native_handle** outReplacedHandle) {
37 const uint32_t slot = 0;
38 const bool fromCache = false;
39 return mReadbackBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
40 }
41
create()42 std::unique_ptr<ComposerResources> ComposerResources::create() {
43 auto resources = std::make_unique<ComposerResources>();
44 return resources->init() ? std::move(resources) : nullptr;
45 }
46
getDisplayReadbackBuffer(Display display,const native_handle_t * rawHandle,const native_handle_t ** outHandle,ReplacedHandle * outReplacedHandle)47 Error ComposerResources::getDisplayReadbackBuffer(Display display, const native_handle_t* rawHandle,
48 const native_handle_t** outHandle,
49 ReplacedHandle* outReplacedHandle) {
50 // import buffer
51 const native_handle_t* importedHandle;
52 Error error = mImporter.importBuffer(rawHandle, &importedHandle);
53 if (error != Error::NONE) {
54 return error;
55 }
56
57 std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
58
59 auto iter = mDisplayResources.find(display);
60 if (iter == mDisplayResources.end()) {
61 mImporter.freeBuffer(importedHandle);
62 return Error::BAD_DISPLAY;
63 }
64 ComposerDisplayResource& displayResource =
65 *static_cast<ComposerDisplayResource*>(iter->second.get());
66
67 // update cache
68 const native_handle_t* replacedHandle;
69 error = displayResource.getReadbackBuffer(importedHandle, outHandle, &replacedHandle);
70 if (error != Error::NONE) {
71 mImporter.freeBuffer(importedHandle);
72 return error;
73 }
74
75 outReplacedHandle->reset(&mImporter, replacedHandle);
76 return Error::NONE;
77 }
78
79 } // namespace hal
80 } // namespace V2_2
81 } // namespace composer
82 } // namespace graphics
83 } // namespace hardware
84 } // namespace android
85