1a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen/* 2a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * Copyright (C) 2012 The Android Open Source Project 3a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * 4a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * Licensed under the Apache License, Version 2.0 (the "License"); 5a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * you may not use this file except in compliance with the License. 6a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * You may obtain a copy of the License at 7a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * 8a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * http://www.apache.org/licenses/LICENSE-2.0 9a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * 10a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * Unless required by applicable law or agreed to in writing, software 11a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * distributed under the License is distributed on an "AS IS" BASIS, 12a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * See the License for the specific language governing permissions and 14a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * limitations under the License. 15a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen */ 16a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 17a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen#ifndef SKIP_CUT_BUFFER_H_ 18a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 19a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen#define SKIP_CUT_BUFFER_H_ 20a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 217e34bf5af26f8752d4786d3098740cdf51e2438fWonsik Kim#include <media/MediaCodecBuffer.h> 22a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen#include <media/stagefright/MediaBuffer.h> 23cb5b766bb0a3ed992998a5bd66de0ee1d2223b81Marco Nelissen#include <media/stagefright/foundation/ABuffer.h> 24a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 25a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissennamespace android { 26a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 27a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen/** 28a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * utility class to cut the start and end off a stream of data in MediaBuffers 29a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen * 30a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen */ 318b71241ce7353731ab75322c46e090ee35014a33Marco Nelissenclass SkipCutBuffer: public RefBase { 32a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen public: 33b1cf03160fa7e7bc6e5cf138db07a7e1ab2ecb26Marco Nelissen // 'skip' is the number of frames to skip from the beginning 34b1cf03160fa7e7bc6e5cf138db07a7e1ab2ecb26Marco Nelissen // 'cut' is the number of frames to cut from the end 35b1cf03160fa7e7bc6e5cf138db07a7e1ab2ecb26Marco Nelissen // 'num16BitChannels' is the number of channels, which are assumed to be 16 bit wide each 36b1cf03160fa7e7bc6e5cf138db07a7e1ab2ecb26Marco Nelissen SkipCutBuffer(size_t skip, size_t cut, size_t num16Channels); 37a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 38a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen // Submit one MediaBuffer for skipping and cutting. This may consume all or 39a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen // some of the data in the buffer, or it may add data to it. 40a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen // After this, the caller should continue processing the buffer as usual. 41a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen void submit(MediaBuffer *buffer); 42cb5b766bb0a3ed992998a5bd66de0ee1d2223b81Marco Nelissen void submit(const sp<ABuffer>& buffer); // same as above, but with an ABuffer 437e34bf5af26f8752d4786d3098740cdf51e2438fWonsik Kim void submit(const sp<MediaCodecBuffer>& buffer); // same as above, but with an ABuffer 44a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen void clear(); 45a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen size_t size(); // how many bytes are currently stored in the buffer 46a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 478b71241ce7353731ab75322c46e090ee35014a33Marco Nelissen protected: 488b71241ce7353731ab75322c46e090ee35014a33Marco Nelissen virtual ~SkipCutBuffer(); 498b71241ce7353731ab75322c46e090ee35014a33Marco Nelissen 50a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen private: 51a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen void write(const char *src, size_t num); 52a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen size_t read(char *dst, size_t num); 537e34bf5af26f8752d4786d3098740cdf51e2438fWonsik Kim template <typename T> 547e34bf5af26f8752d4786d3098740cdf51e2438fWonsik Kim void submitInternal(const sp<T>& buffer); 55a6cdabf38b29ee98bdb3e874b4e2978dbc409624Marco Nelissen int32_t mSkip; 56a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen int32_t mFrontPadding; 57a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen int32_t mBackPadding; 58a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen int32_t mWriteHead; 59a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen int32_t mReadHead; 60a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen int32_t mCapacity; 61a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen char* mCutBuffer; 62a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen DISALLOW_EVIL_CONSTRUCTORS(SkipCutBuffer); 63a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen}; 64a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 65a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen} // namespace android 66a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen 67a98478bfbcc0f7fb4b164d3dce40ca96df75667dMarco Nelissen#endif // OMX_CODEC_H_ 68