85 lines
3.4 KiB
C
85 lines
3.4 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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#ifndef WAV_H
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#define WAV_H
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//------------------------------------------------------------------------------
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// Exported types
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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/// Standard WAV file header information.
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//------------------------------------------------------------------------------
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typedef struct _WavHeader
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{
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/// Contains the letters "RIFF" in ASCII form.
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unsigned int chunkID;
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/// Size of the rest of the chunk following this number.
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unsigned int chunkSize;
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/// Contains the letters "WAVE".
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unsigned int format;
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/// Contains the letters "fmt ".
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unsigned int subchunk1ID;
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/// 16 for PCM. This is the size of the rest of the Subchunk
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/// which follows this number.
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unsigned int subchunk1Size;
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/// PCM = 1 (i.e. Linear quantization). Values other than 1 indicate some
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/// form of compression.
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unsigned short audioFormat;
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/// Mono = 1, Stereo = 2, etc.
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unsigned short numChannels;
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/// 8000, 44100, etc.
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unsigned int sampleRate;
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/// SampleRate * NumChannels * BitsPerSample/8
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unsigned int byteRate;
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/// NumChannels * BitsPerSample/8
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unsigned short blockAlign;
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/// 8 bits = 8, 16 bits = 16, etc.
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unsigned short bitsPerSample;
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/// Contains the letters "data".
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unsigned int subchunk2ID;
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/// Number of bytes in the data.
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unsigned int subchunk2Size;
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} WavHeader;
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#define WAV_HEADER_SIZE 0x100
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//------------------------------------------------------------------------------
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// Exported functions
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//------------------------------------------------------------------------------
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extern unsigned char WAV_IsValid(const WavHeader *header);
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extern void WAV_DisplayInfo(const WavHeader *header);
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#endif //#ifndef WAV_H
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