1 /*
2  * Copyright 2018 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 #ifndef CLIENT_BLOCK_HELPER_H
18 #define CLIENT_BLOCK_HELPER_H
19 
20 #include <gui/IGraphicBufferProducer.h>
21 #include <codec2/hidl/1.0/types.h>
22 #include <C2Work.h>
23 
24 namespace android {
25 namespace hardware {
26 namespace media {
27 namespace c2 {
28 namespace V1_0 {
29 namespace utils {
30 
31 // BufferQueue-Based Block Operations
32 // ==================================
33 
34 // Manage BufferQueue and graphic blocks for both component and codec.
35 // Manage graphic blocks ownership consistently during surface change.
36 struct OutputBufferQueue {
37 
38     OutputBufferQueue();
39 
40     ~OutputBufferQueue();
41 
42     // Configure a new surface to render graphic blocks.
43     // Graphic blocks from older surface will be migrated to new surface.
44     bool configure(const sp<IGraphicBufferProducer>& igbp,
45                    uint32_t generation,
46                    uint64_t bqId);
47 
48     // Render a graphic block to current surface.
49     status_t outputBuffer(
50             const C2ConstGraphicBlock& block,
51             const BnGraphicBufferProducer::QueueBufferInput& input,
52             BnGraphicBufferProducer::QueueBufferOutput* output);
53 
54     // Call holdBufferQueueBlock() on output blocks in the given workList.
55     // The OutputBufferQueue will take the ownership of output blocks.
56     //
57     // Note: This function should be called after WorkBundle has been received
58     // from another process.
59     void holdBufferQueueBlocks(
60             const std::list<std::unique_ptr<C2Work>>& workList);
61 
62 private:
63 
64     class Impl;
65     std::unique_ptr<Impl> mImpl;
66 };
67 
68 }  // namespace utils
69 }  // namespace V1_0
70 }  // namespace c2
71 }  // namespace media
72 }  // namespace hardware
73 }  // namespace android
74 
75 #endif  // CLIENT_BLOCK_HELPER_H
76