1 /* 2 * Copyright 2019 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 #ifndef _IO_WAV_WAVCHUNKHEADER_H_ 17 #define _IO_WAV_WAVCHUNKHEADER_H_ 18 19 #include "WavTypes.h" 20 21 namespace parselib { 22 23 class InputStream; 24 25 /** 26 * Superclass for all RIFF chunks. Handles the chunk ID and chunk size. 27 * Concrete subclasses include chunks for 'RIFF' and 'fmt ' chunks. 28 */ 29 class WavChunkHeader { 30 public: 31 static const RiffID RIFFID_DATA; 32 33 RiffID mChunkId; 34 RiffInt32 mChunkSize; 35 WavChunkHeader()36 WavChunkHeader() : mChunkId(0), mChunkSize(0) {} 37 WavChunkHeader(RiffID chunkId)38 WavChunkHeader(RiffID chunkId) : mChunkId(chunkId), mChunkSize(0) {} 39 40 /** 41 * Reads the contents of the chunk. In this class, just the ID and size fields. 42 * When implemented in a concrete subclass, that implementation MUST call this (super) method 43 * as the first step. It may then read the fields specific to that chunk type. 44 */ 45 virtual void read(InputStream *stream); 46 }; 47 48 } // namespace parselib 49 50 #endif // _IO_WAV_WAVCHUNKHEADER_H_ 51