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 ANDROID_C2_SOFT_AAC_ENC_H_
18 #define ANDROID_C2_SOFT_AAC_ENC_H_
19 
20 #include <atomic>
21 #include <optional>
22 
23 #include <SimpleC2Component.h>
24 
25 #include "aacenc_lib.h"
26 
27 namespace android {
28 
29 class C2SoftAacEnc : public SimpleC2Component {
30 public:
31     class IntfImpl;
32 
33     C2SoftAacEnc(const char *name, c2_node_id_t id, const std::shared_ptr<IntfImpl> &intfImpl);
34     virtual ~C2SoftAacEnc();
35 
36     // From SimpleC2Component
37     c2_status_t onInit() override;
38     c2_status_t onStop() override;
39     void onReset() override;
40     void onRelease() override;
41     c2_status_t onFlush_sm() override;
42     void process(
43             const std::unique_ptr<C2Work> &work,
44             const std::shared_ptr<C2BlockPool> &pool) override;
45     c2_status_t drain(
46             uint32_t drainMode,
47             const std::shared_ptr<C2BlockPool> &pool) override;
48 
49 private:
50     std::shared_ptr<IntfImpl> mIntf;
51 
52     HANDLE_AACENCODER mAACEncoder;
53 
54     UINT mNumBytesPerInputFrame;
55     UINT mOutBufferSize;
56 
57     bool mSentCodecSpecificData;
58     size_t mInputSize;
59     std::optional<c2_cntr64_t> mNextFrameTimestampUs;
60     std::optional<c2_cntr64_t> mLastFrameEndTimestampUs;
61 
62     bool mSignalledError;
63     std::atomic_uint64_t mOutIndex;
64 
65     // We support max 6 channels
66     uint8_t mRemainder[6 * sizeof(int16_t)];
67     size_t mRemainderLen;
68 
69     status_t initEncoder();
70 
71     status_t setAudioParams();
72 
73     C2_DO_NOT_COPY(C2SoftAacEnc);
74 };
75 
76 }  // namespace android
77 
78 #endif  // ANDROID_C2_SOFT_AAC_ENC_H_
79