1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
*
* Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in
* the the people's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
*
* DISCLAIMER
* THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT.
* IF YOU NEED TO INTEGRATE THIRD PARTY’S TECHNOLOGY (SONY, DTS, DOLBY, AVS OR MPEGLA, ETC.)
* IN ALLWINNERS’SDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN
* ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES.
* ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS
* COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE.
* YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTY’S TECHNOLOGY.
*
*
* THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT
* PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING
* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* IN NO EVENT SHALL ALLWINNER 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.
*/
#include <stdio.h>
#include <string.h>
#include "wav_parser.h"
#define WAV_DEBUG
#ifdef WAV_DEBUG
void dump_wav_header(wav_header_t *header)
{
#if 1
char *ptr = (char *)&header->riffType;
printf("riffType: %c%c%c%c\n", ptr[0], ptr[1], ptr[2], ptr[3]);
ptr = (char *)&header->waveType;
printf("waveType: %c%c%c%c\n", ptr[0], ptr[1], ptr[2], ptr[3]);
printf("channels: %u\n", header->numChannels);
printf("rate: %u\n", header->sampleRate);
printf("bits: %u\n", header->bitsPerSample);
printf("align: %u\n", header->blockAlign);
printf("data size: %u\n", header->dataSize);
#else
int i;
unsigned char *ptr = (unsigned char *)header;
for (i = 0; i < sizeof(wav_header_t); i++) {
if (i%16 == 0)
printf("\n");
printf("0x%02x ", ptr[i]);
}
printf("\n");
#endif
}
#else
void dump_wav_header(wav_header_t *header)
{
}
#endif
int check_wav_header(wav_header_t *header, wav_hw_params_t *hwparams)
{
if (!header)
return -1;
dump_wav_header(header);
if (header->riffType != WAV_RIFF)
return -1;
if (header->waveType != WAV_WAVE)
return -1;
hwparams->rate = header->sampleRate;
hwparams->channels = header->numChannels;
/* ignore bit endian */
switch (header->bitsPerSample) {
case 8:
hwparams->format = SND_PCM_FORMAT_U8;
break;
case 16:
hwparams->format = SND_PCM_FORMAT_S16_LE;
break;
case 24:
switch (header->blockAlign/header->numChannels) {
case 4:
hwparams->format = SND_PCM_FORMAT_S24_LE;
break;
case 3:
/*hwparams->format = SND_PCM_FORMAT_S24_3LE;*/
default:
printf("unknown format..\n");
return -1;
}
break;
case 32:
hwparams->format = SND_PCM_FORMAT_S32_LE;
break;
default:
break;
}
return 0;
}
void resize_wav(wav_header_t *header, unsigned int size)
{
header->dataSize = LE_INT(size);
header->riffSize = LE_INT(size + 36);
dump_wav_header(header);
}
void create_wav(wav_header_t *header, unsigned int format, unsigned int rate, unsigned int channels)
{
unsigned int bits = 0, align = 0;
memset(header, 0 , sizeof(wav_header_t));
switch (format) {
case SND_PCM_FORMAT_S16_LE:
bits = 16;
align = 2;
break;
case SND_PCM_FORMAT_S24_LE:
bits = 24;
align = 4;
break;
case SND_PCM_FORMAT_S32_LE:
bits = 32;
align = 4;
break;
}
header->riffType = WAV_RIFF;
header->riffSize = LE_INT(36);
header->waveType = WAV_WAVE;
header->formatType = WAV_FMT;
header->formatSize = LE_INT(16);
/* PCM */
header->compressionCode = LE_INT(0x0001);
header->numChannels = channels;
header->sampleRate = rate;
header->bytesPerSecond =
rate * snd_pcm_format_physical_width(format) / 8;
header->blockAlign = align * channels;
header->bitsPerSample = bits;
header->dataType = WAV_DATA;
header->dataSize = 0;
}
|
