1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* Copyright 2012, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef CONVERTER_H_
#define CONVERTER_H_
#include "WifiDisplaySource.h"
#include <media/stagefright/foundation/AHandler.h>
namespace android {
struct ABuffer;
struct MediaCodec;
#define ENABLE_SILENCE_DETECTION 0
// Utility class that receives media access units and converts them into
// media access unit of a different format.
// Right now this'll convert raw video into H.264 and raw audio into AAC.
struct Converter : public AHandler {
Converter(
const sp<AMessage> ¬ify,
const sp<ALooper> &codecLooper,
const sp<AMessage> &format,
bool usePCMAudio);
status_t initCheck() const;
size_t getInputBufferCount() const;
sp<AMessage> getOutputFormat() const;
void feedAccessUnit(const sp<ABuffer> &accessUnit);
void signalEOS();
void requestIDRFrame();
enum {
kWhatAccessUnit,
kWhatEOS,
kWhatError,
};
enum {
kWhatDoMoreWork,
kWhatRequestIDRFrame,
kWhatShutdown,
kWhatMediaPullerNotify,
kWhatEncoderActivity,
};
void shutdownAsync();
protected:
virtual ~Converter();
virtual void onMessageReceived(const sp<AMessage> &msg);
private:
status_t mInitCheck;
sp<AMessage> mNotify;
sp<ALooper> mCodecLooper;
sp<AMessage> mInputFormat;
bool mIsVideo;
bool mIsPCMAudio;
sp<AMessage> mOutputFormat;
sp<MediaCodec> mEncoder;
sp<AMessage> mEncoderActivityNotify;
Vector<sp<ABuffer> > mEncoderInputBuffers;
Vector<sp<ABuffer> > mEncoderOutputBuffers;
List<size_t> mAvailEncoderInputIndices;
List<sp<ABuffer> > mInputBufferQueue;
bool mDoMoreWorkPending;
#if ENABLE_SILENCE_DETECTION
int64_t mFirstSilentFrameUs;
bool mInSilentMode;
#endif
sp<ABuffer> mPartialAudioAU;
status_t initEncoder();
status_t feedEncoderInputBuffers();
void scheduleDoMoreWork();
status_t doMoreWork();
void notifyError(status_t err);
// Packetizes raw PCM audio data available in mInputBufferQueue
// into a format suitable for transport stream inclusion and
// notifies the observer.
status_t feedRawAudioInputBuffers();
static bool IsSilence(const sp<ABuffer> &accessUnit);
DISALLOW_EVIL_CONSTRUCTORS(Converter);
};
} // namespace android
#endif // CONVERTER_H_
|
