1 /* 2 * Copyright (C) 2014 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 /* 18 * The Opus specification is part of IETF RFC 6716: 19 * http://tools.ietf.org/html/rfc6716 20 */ 21 22 #ifndef SOFT_OPUS_H_ 23 24 #define SOFT_OPUS_H_ 25 26 #include <media/stagefright/omx/SimpleSoftOMXComponent.h> 27 28 struct OpusMSDecoder; 29 30 namespace android { 31 32 struct OpusHeader { 33 int channels; 34 int skip_samples; 35 int channel_mapping; 36 int num_streams; 37 int num_coupled; 38 int16_t gain_db; 39 uint8_t stream_map[8]; 40 }; 41 42 struct SoftOpus : public SimpleSoftOMXComponent { 43 SoftOpus(const char *name, 44 const OMX_CALLBACKTYPE *callbacks, 45 OMX_PTR appData, 46 OMX_COMPONENTTYPE **component); 47 48 protected: 49 virtual ~SoftOpus(); 50 51 virtual OMX_ERRORTYPE internalGetParameter( 52 OMX_INDEXTYPE index, OMX_PTR params); 53 54 virtual OMX_ERRORTYPE internalSetParameter( 55 OMX_INDEXTYPE index, const OMX_PTR params); 56 57 virtual void onQueueFilled(OMX_U32 portIndex); 58 virtual void onPortFlushCompleted(OMX_U32 portIndex); 59 virtual void onPortEnableCompleted(OMX_U32 portIndex, bool enabled); 60 virtual void onReset(); 61 62 private: 63 enum { 64 kNumBuffers = 4, 65 kMaxNumSamplesPerBuffer = 960 * 6 66 }; 67 68 size_t mInputBufferCount; 69 70 OpusMSDecoder *mDecoder; 71 OpusHeader *mHeader; 72 73 int32_t mNumChannels; 74 int32_t mSamplingRate; 75 int64_t mCodecDelay; 76 int64_t mSeekPreRoll; 77 int64_t mSamplesToDiscard; 78 int64_t mAnchorTimeUs; 79 int64_t mNumFramesOutput; 80 bool mHaveEOS; 81 82 enum { 83 NONE, 84 AWAITING_DISABLED, 85 AWAITING_ENABLED 86 } mOutputPortSettingsChange; 87 88 void initPorts(); 89 status_t initDecoder(); 90 bool isConfigured() const; 91 void handleEOS(); 92 93 DISALLOW_EVIL_CONSTRUCTORS(SoftOpus); 94 }; 95 96 } // namespace android 97 98 #endif // SOFT_OPUS_H_ 99