1 /*
2  * Copyright (C) 2009 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 JPEG_SOURCE_H_
18 
19 #define JPEG_SOURCE_H_
20 
21 #include <media/MediaSource.h>
22 
23 namespace android {
24 
25 class DataSource;
26 class MediaBufferGroup;
27 
28 struct JPEGSource : public MediaSource {
29     JPEGSource(const sp<DataSource> &source);
30 
31     virtual status_t start(MetaData *params = NULL);
32     virtual status_t stop();
33     virtual sp<MetaData> getFormat();
34 
35     virtual status_t read(
36             MediaBufferBase **buffer, const ReadOptions *options = NULL);
37 
38 protected:
39     virtual ~JPEGSource();
40 
41 private:
42     sp<DataSource> mSource;
43     MediaBufferGroup *mGroup;
44     bool mStarted;
45     off64_t mSize;
46     int32_t mWidth, mHeight;
47     off64_t mOffset;
48 
49     status_t parseJPEG();
50 
51     JPEGSource(const JPEGSource &);
52     JPEGSource &operator=(const JPEGSource &);
53 };
54 
55 }  // namespace android
56 
57 #endif  // JPEG_SOURCE_H_
58 
59