1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
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
16 #include "image_chain.h"
17
18 namespace OHOS {
19 namespace Rosen {
ImageChain(std::vector<std::shared_ptr<Input>> inputs)20 ImageChain::ImageChain(std::vector<std::shared_ptr<Input>> inputs) : inputs_(inputs)
21 {
22 CreatTexture(srcTextureID_);
23 CreatTexture(dstTextureID_);
24
25 glGenFramebuffers(1, &frameBufferID_);
26 if (inputs_.size() == 1) {
27 flagSeries_ = true;
28 }
29 }
30
Render()31 bool ImageChain::Render()
32 {
33 ProcessData data {srcTextureID_, dstTextureID_, frameBufferID_, 0, 0};
34 if (flagSeries_) {
35 return SeriesRendering(data);
36 }
37
38 if (inputs_.size() == 0) {
39 return false;
40 }
41 return ParallelRendering();
42 }
43
SeriesRendering(ProcessData & data)44 bool ImageChain::SeriesRendering(ProcessData& data)
45 {
46 return inputs_.at(0)->Process(data);
47 }
48
ParallelRendering()49 bool ImageChain::ParallelRendering()
50 {
51 return false;
52 }
53
CreatTexture(unsigned int & textureID)54 void ImageChain::CreatTexture(unsigned int& textureID)
55 {
56 glGenTextures(1, &textureID);
57 glBindTexture(GL_TEXTURE_2D, textureID);
58 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
59 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
60 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
61 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
62 glBindTexture(GL_TEXTURE_2D, 0);
63 }
64 } // namespcae Rosen
65 } // namespace OHOS