1 /**
2  * Copyright (C) 2022 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 IMSMEDIA_JPEG_SOURCE_H_INCLUDED
18 #define IMSMEDIA_JPEG_SOURCE_H_INCLUDED
19 
20 #include <android/asset_manager_jni.h>
21 
22 class ImsMediaPauseImageSource
23 {
24 public:
25     ImsMediaPauseImageSource();
26     ~ImsMediaPauseImageSource();
27 
28     /**
29      * @brief Based on the video resolution ( width x height ), an image asset with same
30      * resolution is loaded and converted to YUV format.
31      *
32      * @param width width of the video frames.
33      * @param height height of the video frames.
34      * @param stride stride of the video frames.
35      *
36      * @return returns true if the image is loaded and false in case of failure.
37      */
38     bool Initialize(int width, int height, int stride);
39 
40     /**
41      * @brief Image YUV buffer loaded in memory is freed.
42      */
43     void Uninitialize();
44 
45     /**
46      * @brief Returns the Image buffer in YUV format.
47      *
48      * @param buffer Image buffer is copied to this buffer.
49      * @param len length of the input buffer.
50      *
51      * @return size of the image YUV data copied to input buffer.
52      */
53     size_t GetYuvImage(uint8_t* buffer, size_t len);
54 
55 private:
56     int mWidth, mHeight;
57     int8_t* mYuvImageBuffer;
58     size_t mBufferSize;
59 
60     AAsset* getImageAsset();
61     const char* getImageFilePath();
62     int8_t* ConvertRgbaToYuv(int8_t* pixels, int width, int height, int stride);
63 };
64 
65 #endif  // IMSMEDIA_JPEG_SOURCE_H_INCLUDED
66