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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "wav.h"
#include <utility/trace.h>
//------------------------------------------------------------------------------
// Internal constants
//------------------------------------------------------------------------------
/// WAV letters "RIFF"
#define WAV_CHUNKID 0x46464952
/// WAV letters "WAVE"
#define WAV_FORMAT 0x45564157
/// WAV letters "fmt "
#define WAV_SUBCHUNKID 0x20746D66
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Returns 1 if the header of a Wav file is valid; otherwise returns 0.
/// \param file Buffer holding the file to examinate.
//------------------------------------------------------------------------------
unsigned char WAV_IsValid(const WavHeader *header)
{
return ((header->chunkID == WAV_CHUNKID)
&& (header->format == WAV_FORMAT)
&& (header->subchunk1Size == 0x10));
}
//------------------------------------------------------------------------------
/// Display the information of the WAV file (sample rate, stereo/mono and frame
/// size).
//------------------------------------------------------------------------------
void WAV_DisplayInfo(const WavHeader *header)
{
TRACE_PERM_WP( "Wave file header information\n\r");
TRACE_PERM_WP( "--------------------------------\n\r");
TRACE_PERM_WP( " - Chunk ID = 0x%08X\n\r", header->chunkID);
TRACE_PERM_WP( " - Chunk Size = %d\n\r", header->chunkSize);
TRACE_PERM_WP( " - Format = 0x%08X\n\r", header->format);
TRACE_PERM_WP( " - SubChunk ID = 0x%08X\n\r", header->subchunk1ID);
TRACE_PERM_WP( " - Subchunk1 Size = %d\n\r", header->subchunk1Size);
TRACE_PERM_WP( " - Audio Format = 0x%04X\n\r", header->audioFormat);
TRACE_PERM_WP( " - Num. Channels = %d\n\r", header->numChannels);
TRACE_PERM_WP( " - Sample Rate = %d\n\r", header->sampleRate);
TRACE_PERM_WP( " - Byte Rate = %d\n\r", header->byteRate);
TRACE_PERM_WP( " - Block Align = %d\n\r", header->blockAlign);
TRACE_PERM_WP( " - Bits Per Sample = %d\n\r", header->bitsPerSample);
TRACE_PERM_WP( " - Subchunk2 ID = 0x%08X\n\r", header->subchunk2ID);
TRACE_PERM_WP( " - Subchunk2 Size = %d\n\r", header->subchunk2Size);
}
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