2 * Copyright (C) 2011 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include <media/stagefright/DataSource.h>
18 #include <media/stagefright/MediaSource.h>
19 #include <media/stagefright/FileSource.h>
20 #include <media/stagefright/MediaDefs.h>
21 #include <media/stagefright/MediaExtractor.h>
22 #include <media/stagefright/MetaData.h>
23 #include <media/stagefright/OMXClient.h>
24 #include <media/stagefright/OMXCodec.h>
25 #include "NuCachedSource2.h"
26 #include "NuHTTPDataSource.h"
27 #include "ThrottledSource.h"
29 #include "android_GenericPlayer.h"
30 #include "OpenSLES_AndroidMetadata.h"
32 //--------------------------------------------------------------------------------------------------
35 // to keep in sync with the ANDROID_KEY_INDEX_PCMFORMAT_* constants in android_AudioSfDecoder.cpp
36 static const char* const kPcmDecodeMetadataKeys[] = {
37 ANDROID_KEY_PCMFORMAT_NUMCHANNELS, ANDROID_KEY_PCMFORMAT_SAMPLESPERSEC,
38 ANDROID_KEY_PCMFORMAT_BITSPERSAMPLE, ANDROID_KEY_PCMFORMAT_CONTAINERSIZE,
39 ANDROID_KEY_PCMFORMAT_CHANNELMASK, ANDROID_KEY_PCMFORMAT_ENDIANNESS };
40 #define NB_PCMMETADATA_KEYS (sizeof(kPcmDecodeMetadataKeys)/sizeof(kPcmDecodeMetadataKeys[0]))
42 class AudioSfDecoder : public GenericPlayer
46 AudioSfDecoder(const AudioPlayback_Parameters* params);
47 virtual ~AudioSfDecoder();
49 virtual void preDestroy();
51 // overridden from GenericPlayer
54 void startPrefetch_async();
56 uint32_t getPcmFormatKeyCount();
57 bool getPcmFormatKeySize(uint32_t index, uint32_t* pKeySize);
58 bool getPcmFormatKeyName(uint32_t index, uint32_t keySize, char* keyName);
59 bool getPcmFormatValueSize(uint32_t index, uint32_t* pValueSize);
60 bool getPcmFormatKeyValue(uint32_t index, uint32_t size, uint32_t* pValue);
67 kWhatCheckCache = 'cach',
68 kWhatGetPcmFormat = 'gpcm'
71 // Async event handlers (called from the AudioSfDecoder's event loop)
73 void onCheckCache(const sp<AMessage> &msg);
74 virtual void onRender();
76 // Async event handlers (called from GenericPlayer's event loop)
77 virtual void onPrepare();
78 virtual void onPlay();
79 virtual void onPause();
80 virtual void onSeek(const sp<AMessage> &msg);
81 virtual void onLoop(const sp<AMessage> &msg);
82 virtual void onGetPcmFormatKeyCount();
84 // overridden from GenericPlayer
85 virtual void onNotify(const sp<AMessage> &msg);
86 virtual void onMessageReceived(const sp<AMessage> &msg);
88 // to be implemented by subclasses of AudioSfDecoder to do something with the audio samples
89 virtual void createAudioSink() = 0;
90 virtual void updateAudioSink() = 0;
91 virtual void startAudioSink() = 0;
92 virtual void pauseAudioSink() = 0;
94 sp<DataSource> mDataSource; // where the raw data comes from
95 sp<MediaSource> mAudioSource;// the decoder reading from the data source
96 // used to indicate mAudioSource was successfully started, but wasn't stopped
97 bool mAudioSourceStarted;
99 // negative values indicate invalid value
100 int64_t mBitrate; // in bits/sec
101 uint32_t mChannelMask;
102 int64_t mDurationUsec;
104 // buffer passed from decoder to renderer
105 MediaBuffer *mDecodeBuffer;
107 // mutex used to protect the decode buffer, the audio source and its running state
108 Mutex mBufferSourceLock;
112 void notifyPrepared(status_t prepareRes);
115 int64_t mSeekTimeMsec;
116 int64_t mLastDecodedPositionUs;
118 // mutex used for seek flag and seek time read/write
121 // informations that can be retrieved in the PCM format queries
122 // these values are only written in the event loop
123 uint32_t mPcmFormatKeyCount;
124 uint32_t mPcmFormatValues[NB_PCMMETADATA_KEYS];
125 // for synchronous "get" calls on the PCM decode format:
126 // prevents concurrent "getPcmFormat" calls
127 Mutex mGetPcmFormatLockSingleton;
128 // lock order 1/ mGetPcmFormatLockSingleton 2/ mGetPcmFormatLock
129 Mutex mGetPcmFormatLock;
130 Condition mGetPcmFormatCondition;
131 bool mGetPcmFormatKeyCount;
134 CacheStatus_t getCacheRemaining(bool *eos);
135 int64_t getPositionUsec();
138 DISALLOW_EVIL_CONSTRUCTORS(AudioSfDecoder);
142 } // namespace android