120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber/* 220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Copyright (C) 2009 The Android Open Source Project 320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * you may not use this file except in compliance with the License. 620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * You may obtain a copy of the License at 720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 1020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Unless required by applicable law or agreed to in writing, software 1120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 1220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * See the License for the specific language governing permissions and 1420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * limitations under the License. 1520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber */ 1620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 1720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#ifndef ANDROID_WAVEWRITER_H_ 1820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 1920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#define ANDROID_WAVEWRITER_H_ 2020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2120111aa043c5f404472bc63b90bc5aad906b1101Andreas Hubernamespace android { 2220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberclass WaveWriter { 2420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberpublic: 2520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber WaveWriter(const char *filename, 2620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber uint16_t num_channels, uint32_t sampling_rate) 2720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber : mFile(fopen(filename, "wb")), 2820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber mTotalBytes(0) { 2920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fwrite("RIFFxxxxWAVEfmt \x10\x00\x00\x00\x01\x00", 1, 22, mFile); 3020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u16(num_channels); 3120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u32(sampling_rate); 3220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u32(sampling_rate * num_channels * 2); 3320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u16(num_channels * 2); 3420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u16(16); 3520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fwrite("dataxxxx", 1, 8, mFile); 3620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber } 3720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 3820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber ~WaveWriter() { 3920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fseek(mFile, 40, SEEK_SET); 4020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u32(mTotalBytes); 4120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 4220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fseek(mFile, 4, SEEK_SET); 4320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u32(36 + mTotalBytes); 4420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 4520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fclose(mFile); 4620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber mFile = NULL; 4720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber } 4820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 4920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber void Append(const void *data, size_t size) { 5020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fwrite(data, 1, size, mFile); 5120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber mTotalBytes += size; 5220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber } 5320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 5420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberprivate: 5520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber void write_u16(uint16_t x) { 5620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fputc(x & 0xff, mFile); 5720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fputc(x >> 8, mFile); 5820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber } 5920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 6020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber void write_u32(uint32_t x) { 6120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u16(x & 0xffff); 6220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber write_u16(x >> 16); 6320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber } 6420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 6520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber FILE *mFile; 6620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber size_t mTotalBytes; 6720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber}; 6820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 6920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} // namespace android 7020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 7120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#endif // ANDROID_WAVEWRITER_H_ 72