| /* ---------------------------------------------------------------------------- | |
| * SAM Software Package License | |
| * ---------------------------------------------------------------------------- | |
| * Copyright (c) 2015, 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. | |
| * ---------------------------------------------------------------------------- | |
| */ | |
| #ifndef WAV_H | |
| #define WAV_H | |
| /*---------------------------------------------------------------------------- | |
| * Headers | |
| *----------------------------------------------------------------------------*/ | |
| #include <stdbool.h> | |
| #include <stdint.h> | |
| /*---------------------------------------------------------------------------- | |
| * Types | |
| *----------------------------------------------------------------------------*/ | |
| /** Standard WAV file header information. */ | |
| struct _wav_header { | |
| /** Contains the letters "RIFF" in ASCII form. */ | |
| uint32_t chunk_id; | |
| /** Size of the rest of the chunk following this number. */ | |
| uint32_t chunk_size; | |
| /** Contains the letters "WAVE". */ | |
| uint32_t format; | |
| /** Contains the letters "fmt ". */ | |
| uint32_t subchunk1_id; | |
| /** 16 for PCM. This is the size of the rest of the Subchunk which follows this number. */ | |
| uint32_t subchunk1_size; | |
| /** PCM = 1 (i.e. Linear quantization). Values other than 1 indicate some form of compression. */ | |
| uint16_t audio_format; | |
| /** Mono = 1, Stereo = 2, etc. */ | |
| uint16_t num_channels; | |
| /** 8000, 44100, etc. */ | |
| uint32_t sample_rate; | |
| /** SampleRate * NumChannels * BitsPerSample/8 */ | |
| uint32_t byte_rate; | |
| /** NumChannels * BitsPerSample/8 */ | |
| uint16_t block_align; | |
| /** 8 bits = 8, 16 bits = 16, etc. */ | |
| uint16_t bits_per_sample; | |
| /** Contains the letters "data". */ | |
| uint32_t subchunk2_id; | |
| /** Number of bytes in the data. */ | |
| uint32_t subchunk2_size; | |
| }; | |
| /*---------------------------------------------------------------------------- | |
| * Exported functions | |
| *----------------------------------------------------------------------------*/ | |
| extern bool wav_is_valid(const struct _wav_header *header); | |
| extern void wav_display_info(const struct _wav_header *header); | |
| #endif /* #ifndef WAV_H */ |