1 /*
2  * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef PCM_2_WAV_H
17 #define PCM_2_WAV_H
18 
19 #include <cstdint>
20 
21 struct WAV_HEADER {
22     /* RIFF Chunk Descriptor */
23     uint8_t RIFF[4] = {'R', 'I', 'F', 'F'}; // RIFF Header Magic header
24     uint32_t ChunkSize = 0; // RIFF Chunk Size
25     uint8_t WAVE[4] = {'W', 'A', 'V', 'E'}; // WAVE Header
26     /* "fmt" sub-chunk */
27     uint8_t fmt[4] = {'f', 'm', 't', ' '}; // FMT header
28     uint32_t Subchunk1Size = 16; // Size of the fmt chunk
29     uint16_t AudioFormat = 1; // Audio format 1=PCM
30     uint16_t NumOfChan = 2; // Number of channels 1=Mono 2=Stereo
31     uint32_t SamplesPerSec = 44100; // Sampling Frequency in Hz
32     uint32_t bytesPerSec = 176400; // bytes per second
33     uint16_t blockAlign = 2; // 2=16-bit mono, 4=16-bit stereo
34     uint16_t bitsPerSample = 16; // Number of bits per sample
35     /* "data" sub-chunk */
36     uint8_t Subchunk2ID[4] = {'d', 'a', 't', 'a'}; // "data"  string
37     uint32_t Subchunk2Size = 0; // Sampled data length
38 };
39 
40 using wav_hdr = struct WAV_HEADER;
41 #endif  // PCM_2_WAV_H