From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- utility/wav.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 utility/wav.c (limited to 'utility/wav.c') diff --git a/utility/wav.c b/utility/wav.c new file mode 100644 index 0000000..62c7960 --- /dev/null +++ b/utility/wav.c @@ -0,0 +1,84 @@ +/* ---------------------------------------------------------------------------- + * 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 + +//------------------------------------------------------------------------------ +// 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); +} \ No newline at end of file -- cgit v1.2.3