1 /*---------------------------------------------------------------------------- 2 * 3 * File: 4 * eas_wave.h 5 * 6 * Contents and purpose: 7 * Writes output to a .WAV file 8 * 9 * DO NOT MODIFY THIS FILE! 10 * 11 * Copyright Sonic Network Inc. 2005 12 13 * Licensed under the Apache License, Version 2.0 (the "License"); 14 * you may not use this file except in compliance with the License. 15 * You may obtain a copy of the License at 16 * 17 * http://www.apache.org/licenses/LICENSE-2.0 18 * 19 * Unless required by applicable law or agreed to in writing, software 20 * distributed under the License is distributed on an "AS IS" BASIS, 21 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 22 * See the License for the specific language governing permissions and 23 * limitations under the License. 24 *---------------------------------------------------------------------------- 25 * Revision Control: 26 * $Revision: 82 $ 27 * $Date: 2006-07-10 11:45:19 -0700 (Mon, 10 Jul 2006) $ 28 *---------------------------------------------------------------------------- 29 */ 30 31 #include "eas_types.h" 32 33 /* sentinel */ 34 #ifndef _EAS_WAVE_H 35 #define _EAS_WAVE_H 36 37 /* .WAV file format chunk */ 38 typedef struct { 39 EAS_U16 wFormatTag; 40 EAS_U16 nChannels; 41 EAS_U32 nSamplesPerSec; 42 EAS_U32 nAvgBytesPerSec; 43 EAS_U16 nBlockAlign; 44 EAS_U16 wBitsPerSample; 45 } FMT_CHUNK; 46 47 /* .WAV file header */ 48 typedef struct { 49 EAS_U32 nRiffTag; 50 EAS_U32 nRiffSize; 51 EAS_U32 nWaveTag; 52 EAS_U32 nFmtTag; 53 EAS_U32 nFmtSize; 54 FMT_CHUNK fc; 55 EAS_U32 nDataTag; 56 EAS_U32 nDataSize; 57 } WAVE_HEADER; 58 59 typedef struct { 60 WAVE_HEADER wh; 61 FILE *file; 62 EAS_BOOL write; 63 EAS_U32 dataSize; 64 } WAVE_FILE; 65 66 WAVE_FILE *WaveFileCreate (const char *filename, EAS_I32 nChannels, EAS_I32 nSamplesPerSec, EAS_I32 wBitsPerSample); 67 EAS_I32 WaveFileWrite (WAVE_FILE *wFile, void *buffer, EAS_I32 n); 68 EAS_BOOL WaveFileClose (WAVE_FILE *wFile); 69 WAVE_FILE *WaveFileOpen (const char *filename); 70 71 #endif /* end #ifndef _EAS_WAVE_H */ 72 73 74 75
