1 /*
2  * Copyright (C) 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 C2_SOFT_MPEG4_DEC_H_
18 #define C2_SOFT_MPEG4_DEC_H_
19 
20 #include <SimpleC2Component.h>
21 
22 
23 struct tagvideoDecControls;
24 
25 namespace android {
26 
27 struct C2SoftMpeg4Dec : public SimpleC2Component {
28     class IntfImpl;
29 
30     C2SoftMpeg4Dec(const char* name, c2_node_id_t id,
31                    const std::shared_ptr<IntfImpl>& intfImpl);
32     virtual ~C2SoftMpeg4Dec();
33 
34     // From SimpleC2Component
35     c2_status_t onInit() override;
36     c2_status_t onStop() override;
37     void onReset() override;
38     void onRelease() override;
39     c2_status_t onFlush_sm() override;
40     void process(
41             const std::unique_ptr<C2Work> &work,
42             const std::shared_ptr<C2BlockPool> &pool) override;
43     c2_status_t drain(
44             uint32_t drainMode,
45             const std::shared_ptr<C2BlockPool> &pool) override;
46  private:
47     enum {
48         kNumOutputBuffers = 2,
49     };
50 
51     status_t initDecoder();
52     c2_status_t ensureDecoderState(const std::shared_ptr<C2BlockPool> &pool);
53     void finishWork(uint64_t index, const std::unique_ptr<C2Work> &work);
54     bool handleResChange(const std::unique_ptr<C2Work> &work);
55 
56     std::shared_ptr<IntfImpl> mIntf;
57     tagvideoDecControls *mDecHandle;
58     std::shared_ptr<C2GraphicBlock> mOutBlock;
59     uint8_t *mOutputBuffer[kNumOutputBuffers];
60     size_t  mOutputBufferSize;
61 
62     uint32_t mWidth;
63     uint32_t mHeight;
64     uint32_t mNumSamplesOutput;
65 
66     bool mIsMpeg4;
67     bool mInitialized;
68     bool mFramesConfigured;
69     bool mSignalledOutputEos;
70     bool mSignalledError;
71 
72     C2_DO_NOT_COPY(C2SoftMpeg4Dec);
73 };
74 
75 }  // namespace android
76 
77 #endif  // C2_SOFT_MPEG4_DEC_H_
78