1 /* 2 * Copyright (C) 2011 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 SOFT_G711_H_ 18 19 #define SOFT_G711_H_ 20 21 #include <media/stagefright/omx/SimpleSoftOMXComponent.h> 22 23 namespace android { 24 25 struct SoftG711 : public SimpleSoftOMXComponent { 26 SoftG711(const char *name, 27 const OMX_CALLBACKTYPE *callbacks, 28 OMX_PTR appData, 29 OMX_COMPONENTTYPE **component); 30 31 protected: 32 virtual ~SoftG711(); 33 34 virtual OMX_ERRORTYPE internalGetParameter( 35 OMX_INDEXTYPE index, OMX_PTR params); 36 37 virtual OMX_ERRORTYPE internalSetParameter( 38 OMX_INDEXTYPE index, const OMX_PTR params); 39 40 virtual void onQueueFilled(OMX_U32 portIndex); 41 42 private: 43 enum { 44 kNumBuffers = 4, 45 kMaxNumSamplesPerFrame = 16384, 46 }; 47 48 bool mIsMLaw; 49 bool mSignalledError; 50 OMX_U32 mNumChannels; 51 int32_t mSamplingRate; 52 53 void initPorts(); 54 55 static void DecodeALaw(int16_t *out, const uint8_t *in, size_t inSize); 56 static void DecodeMLaw(int16_t *out, const uint8_t *in, size_t inSize); 57 58 DISALLOW_EVIL_CONSTRUCTORS(SoftG711); 59 }; 60 61 } // namespace android 62 63 #endif // SOFT_G711_H_ 64 65