1 /* ----------------------------------------------------------------------------
\r
2 * SAM Software Package License
\r
3 * ----------------------------------------------------------------------------
\r
4 * Copyright (c) 2015, Atmel Corporation
\r
6 * All rights reserved.
\r
8 * Redistribution and use in source and binary forms, with or without
\r
9 * modification, are permitted provided that the following conditions are met:
\r
11 * - Redistributions of source code must retain the above copyright notice,
\r
12 * this list of conditions and the disclaimer below.
\r
14 * Atmel's name may not be used to endorse or promote products derived from
\r
15 * this software without specific prior written permission.
\r
17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
\r
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
\r
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
\r
20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
\r
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
\r
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
\r
23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
\r
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
\r
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
\r
26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\r
27 * ----------------------------------------------------------------------------
\r
33 /*----------------------------------------------------------------------------
\r
35 *----------------------------------------------------------------------------*/
\r
37 #include <stdbool.h>
\r
40 /*----------------------------------------------------------------------------
\r
42 *----------------------------------------------------------------------------*/
\r
44 /** Standard WAV file header information. */
\r
45 struct _wav_header {
\r
46 /** Contains the letters "RIFF" in ASCII form. */
\r
48 /** Size of the rest of the chunk following this number. */
\r
49 uint32_t chunk_size;
\r
50 /** Contains the letters "WAVE". */
\r
52 /** Contains the letters "fmt ". */
\r
53 uint32_t subchunk1_id;
\r
54 /** 16 for PCM. This is the size of the rest of the Subchunk which follows this number. */
\r
55 uint32_t subchunk1_size;
\r
56 /** PCM = 1 (i.e. Linear quantization). Values other than 1 indicate some form of compression. */
\r
57 uint16_t audio_format;
\r
58 /** Mono = 1, Stereo = 2, etc. */
\r
59 uint16_t num_channels;
\r
60 /** 8000, 44100, etc. */
\r
61 uint32_t sample_rate;
\r
62 /** SampleRate * NumChannels * BitsPerSample/8 */
\r
64 /** NumChannels * BitsPerSample/8 */
\r
65 uint16_t block_align;
\r
66 /** 8 bits = 8, 16 bits = 16, etc. */
\r
67 uint16_t bits_per_sample;
\r
68 /** Contains the letters "data". */
\r
69 uint32_t subchunk2_id;
\r
70 /** Number of bytes in the data. */
\r
71 uint32_t subchunk2_size;
\r
74 /*----------------------------------------------------------------------------
\r
75 * Exported functions
\r
76 *----------------------------------------------------------------------------*/
\r
78 extern bool wav_is_valid(const struct _wav_header *header);
\r
80 extern void wav_display_info(const struct _wav_header *header);
\r
82 #endif /* #ifndef WAV_H */
\r