17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*3197c708SJimmy Vetayases * Common Development and Distribution License (the "License"). 6*3197c708SJimmy Vetayases * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*3197c708SJimmy Vetayases * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate /* 277c478bd9Sstevel@tonic-gate * This header file defines the .wav audio file format. 287c478bd9Sstevel@tonic-gate */ 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate #ifndef _WAV_H 317c478bd9Sstevel@tonic-gate #define _WAV_H 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate #include <sys/types.h> 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate #ifdef __cplusplus 367c478bd9Sstevel@tonic-gate extern "C" { 377c478bd9Sstevel@tonic-gate #endif 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate /* 407c478bd9Sstevel@tonic-gate * Define the on-disk audio file header for the .wav file format. 417c478bd9Sstevel@tonic-gate * By definition .wav files are little endian. Macros are provided 427c478bd9Sstevel@tonic-gate * to make the conversion easier. 437c478bd9Sstevel@tonic-gate * 447c478bd9Sstevel@tonic-gate * The .wav format is one of the variations of the RIFF format. To 457c478bd9Sstevel@tonic-gate * that end it contains a RIFF header chunk, a type chunk, a format 467c478bd9Sstevel@tonic-gate * chunk, and then one or more data chunks. The following illustrates 477c478bd9Sstevel@tonic-gate * the format: 487c478bd9Sstevel@tonic-gate * 497c478bd9Sstevel@tonic-gate * RIFF <Length of data> RIFF header chunk 507c478bd9Sstevel@tonic-gate * WAVE type chunk 517c478bd9Sstevel@tonic-gate * fmt<sp> format chunk 527c478bd9Sstevel@tonic-gate * DATA <Length of data> <data> data chunk (one or more) 537c478bd9Sstevel@tonic-gate * 547c478bd9Sstevel@tonic-gate * Since the RIFF headers never change for a .wav file there's no real reason 557c478bd9Sstevel@tonic-gate * to separate the header into the different chunks. Thus a single header 567c478bd9Sstevel@tonic-gate * structure is defined for the header. 577c478bd9Sstevel@tonic-gate * 587c478bd9Sstevel@tonic-gate * When building a .wav header the size of the data isn't always known. 597c478bd9Sstevel@tonic-gate * The following define is used for that situation. 607c478bd9Sstevel@tonic-gate */ 617c478bd9Sstevel@tonic-gate #define AUDIO_WAV_UNKNOWN_SIZE (~0) 627c478bd9Sstevel@tonic-gate 637c478bd9Sstevel@tonic-gate struct wav_filehdr { 647c478bd9Sstevel@tonic-gate uint32_t wav_riff_ID; /* RIFF file ID */ 657c478bd9Sstevel@tonic-gate int32_t wav_riff_size; /* size of file - wav_riff* */ 667c478bd9Sstevel@tonic-gate uint32_t wav_type_ID; /* file type ID */ 677c478bd9Sstevel@tonic-gate uint32_t wav_fmt_ID; /* format ID */ 687c478bd9Sstevel@tonic-gate uint32_t wav_fmt_size; /* size of wav_fmt_*'s */ 697c478bd9Sstevel@tonic-gate uint16_t wav_fmt_encoding; /* audio data encoding method */ 707c478bd9Sstevel@tonic-gate uint16_t wav_fmt_channels; /* number of channels */ 717c478bd9Sstevel@tonic-gate uint32_t wav_fmt_sample_rate; /* sample rate */ 727c478bd9Sstevel@tonic-gate uint32_t wav_fmt_bytes_per_second; /* bytes per sec. of audio */ 737c478bd9Sstevel@tonic-gate uint16_t wav_fmt_bytes_per_sample; /* bytes per audio sample */ 747c478bd9Sstevel@tonic-gate uint16_t wav_fmt_bits_per_sample; /* bits per audio sample */ 757c478bd9Sstevel@tonic-gate uint32_t wav_data_ID; /* data ID */ 767c478bd9Sstevel@tonic-gate int32_t wav_data_size; /* size of the data */ 777c478bd9Sstevel@tonic-gate }; 787c478bd9Sstevel@tonic-gate typedef struct wav_filehdr wav_filehdr_t; 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate /* define for wav_filehdr.wav_riff_ID */ 817c478bd9Sstevel@tonic-gate #define AUDIO_WAV_RIFF_ID ((uint32_t)0x46464952) /* 'RIFF' */ 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate /* define for wav_filehdr.wav_wave_ID */ 847c478bd9Sstevel@tonic-gate #define AUDIO_WAV_TYPE_ID ((uint32_t)0x45564157) /* 'WAVE' */ 857c478bd9Sstevel@tonic-gate 867c478bd9Sstevel@tonic-gate /* define for wav_filehdr.wav_fmt_ID */ 877c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FORMAT_ID ((uint32_t)0x20746d66) /* 'fmt ' */ 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate /* define for wav_filehdr.wav_fmt_size */ 907c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FORMAT_SIZE 0x10 /* constant value */ 917c478bd9Sstevel@tonic-gate 927c478bd9Sstevel@tonic-gate /* defines for wav_filehdr.wav_fmt_encoding */ 937c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_ENCODING_UNKNOWN 0x0000 947c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_ENCODING_PCM 0x0001 957c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_ENCODING_MS_ADPCM 0x0002 967c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_ENCODING_ALAW 0x0006 977c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_ENCODING_MULAW 0x0007 987c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_ENCODING_DVI_ADPCM 0x0011 997c478bd9Sstevel@tonic-gate 1007c478bd9Sstevel@tonic-gate /* defines for wav_filehdr.wav_fmt_channels */ 1017c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_CHANNELS_MONO 0 1027c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_CHANNELS_STEREO 1 1037c478bd9Sstevel@tonic-gate 1047c478bd9Sstevel@tonic-gate /* defines for wav_filehdr.wav_fmt_bytes_per_sample */ 1057c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_BYTES_PER_SAMPLE_8_BIT_MONO 1 1067c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_BYTES_PER_SAMPLE_8_BIT_STEREO 2 1077c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_BYTES_PER_SAMPLE_16_BIT_MONO 2 1087c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_BYTES_PER_SAMPLE_16_BIT_STEREO 4 1097c478bd9Sstevel@tonic-gate 1107c478bd9Sstevel@tonic-gate /* defines for wav_filehdr.wav_fmt_bits_per_sample */ 1117c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_BITS_PER_SAMPLE_8_BITS 8 1127c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FMT_BITS_PER_SAMPLE_16_BITS 16 1137c478bd9Sstevel@tonic-gate 1147c478bd9Sstevel@tonic-gate /* defines for wav_filehdr.wav_data_ID */ 115*3197c708SJimmy Vetayases #define AUDIO_WAV_DATA_ID_UC ((uint32_t)0x41544144) /* DATA */ 116*3197c708SJimmy Vetayases #define AUDIO_WAV_DATA_ID_LC ((uint32_t)0x61746164) /* data */ 1177c478bd9Sstevel@tonic-gate 1187c478bd9Sstevel@tonic-gate 1197c478bd9Sstevel@tonic-gate /* byte swapping macros */ 1207c478bd9Sstevel@tonic-gate #if defined(__sparc) /* big endian */ 1217c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FILE2HOST_INT(from, to) \ 1227c478bd9Sstevel@tonic-gate (*to) = ((((*from) >> 24) & 0xff) | (((*from) & 0xff) << 24) | \ 1237c478bd9Sstevel@tonic-gate (((*from) >> 8) & 0xff00) | (((*from) & 0xff00) << 8)) 1247c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FILE2HOST_SHORT(from, to) \ 1257c478bd9Sstevel@tonic-gate (*to) = ((((*from) >> 8) & 0xff) | (((*from) & 0xff) << 8)) 1267c478bd9Sstevel@tonic-gate #define AUDIO_WAV_HOST2FILE_INT(from, to) \ 1277c478bd9Sstevel@tonic-gate AUDIO_WAV_FILE2HOST_INT((from), (to)) 1287c478bd9Sstevel@tonic-gate #define AUDIO_WAV_HOST2FILE_SHORT(from, to) \ 1297c478bd9Sstevel@tonic-gate AUDIO_WAV_FILE2HOST_SHORT((from), (to)) 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate #elif defined(__i386) || defined(__amd64) /* little endian */ 1327c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FILE2HOST_INT(from, to) \ 1337c478bd9Sstevel@tonic-gate *((int *)(to)) = *((int *)(from)) 1347c478bd9Sstevel@tonic-gate #define AUDIO_WAV_FILE2HOST_SHORT(from, to) \ 1357c478bd9Sstevel@tonic-gate *((short *)(to)) = *((short *)(from)) 1367c478bd9Sstevel@tonic-gate #define AUDIO_WAV_HOST2FILE_INT(from, to) \ 1377c478bd9Sstevel@tonic-gate *((int *)(to)) = *((int *)(from)) 1387c478bd9Sstevel@tonic-gate #define AUDIO_WAV_HOST2FILE_SHORT(from, to) \ 1397c478bd9Sstevel@tonic-gate *((short *)(to)) = *((short *)(from)) 1407c478bd9Sstevel@tonic-gate 1417c478bd9Sstevel@tonic-gate #else 1427c478bd9Sstevel@tonic-gate #error unknown machine type; 1437c478bd9Sstevel@tonic-gate #endif /* byte swapping */ 1447c478bd9Sstevel@tonic-gate 1457c478bd9Sstevel@tonic-gate 1467c478bd9Sstevel@tonic-gate #ifdef __cplusplus 1477c478bd9Sstevel@tonic-gate } 1487c478bd9Sstevel@tonic-gate #endif 1497c478bd9Sstevel@tonic-gate 1507c478bd9Sstevel@tonic-gate #endif /* _WAV_H */ 151