1 // Copyright (C) 2020 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #pragma once
16 
17 #include "host-common/GoldfishMediaDefs.h"
18 #include "host-common/MediaTexturePool.h"
19 #include "host-common/opengles.h"
20 
21 #include <stddef.h>
22 #include <stdint.h>
23 #include <list>
24 
25 namespace android {
26 namespace emulation {
27 
28 // This is a helper class to render decoded frames
29 // to host color buffer
30 class MediaHostRenderer {
31 public:
32     using TextureFrame = MediaTexturePool::TextureFrame;
33     // get a TextureFrame structure to hold decoded frame
34     MediaTexturePool::TextureFrame getTextureFrame(int w, int h);
35 
36     void saveDecodedFrameToTexture(MediaTexturePool::TextureFrame frame,
37                                    void* privData,
38                                    void* func);
39 
40     // put back a used TextureFrame so it can be reused again
41     // later
putTextureFrame(MediaTexturePool::TextureFrame frame)42     void putTextureFrame(MediaTexturePool::TextureFrame frame) {
43         mTexturePool.putTextureFrame(frame);
44     }
45 
46     void cleanUpTextures();
47 
getTexturePool()48     MediaTexturePool* getTexturePool() { return &mTexturePool; }
49 
50 private:
51     MediaTexturePool mTexturePool;
52 
53 public:
54     // render decoded frame stored in CPU memory
55     void renderToHostColorBuffer(int hostColorBufferId,
56                                  unsigned int outputWidth,
57                                  unsigned int outputHeight,
58                                  uint8_t* decodedFrame,
59                                  void* metadata = nullptr);
60 
61     // render decoded frame stored in GPU texture; recycle the swapped
62     // out texture from colorbuffer into framepool
63     void renderToHostColorBufferWithTextures(
64             int hostColorBufferId,
65             unsigned int outputWidth,
66             unsigned int outputHeight,
67             MediaTexturePool::TextureFrame frame,
68             void* metadata = nullptr);
69 
70     MediaHostRenderer();
71     ~MediaHostRenderer();
72 
73 private:
74     AndroidVirtioGpuOps* mVirtioGpuOps = nullptr;
75 };
76 
77 }  // namespace emulation
78 }  // namespace android
79