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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
#include <rtconfig.h>
#ifdef BSP_USING_I2S_LAYER
#include <rtthread.h>
#include <rtdevice.h>
#if defined(E2000D_DEMO_BOARD)||defined(E2000Q_DEMO_BOARD)
#define AUDIO_DEVICE_NAME "I2S0"
#endif
#if defined(PD2408_TEST_B_BOARD)
#define AUDIO_DEVICE_NAME "I2S0_MSG"
#endif
#define AUDIO_SAMPLERATE 16000
#define AUDIO_CHANNELS 2
#define AUDIO_SAMPLEBITS 16
#define RECORD_SECONDS 5
#define RECORD_TOTAL_SIZE \
(AUDIO_SAMPLERATE * AUDIO_CHANNELS * \
(AUDIO_SAMPLEBITS / 8) * RECORD_SECONDS)
/* 每次读20ms */
#define AUDIO_BUF_SIZE RT_AUDIO_REPLAY_MP_BLOCK_SIZE
static rt_device_t audio_dev = RT_NULL;
static int i2s_record_play_test(int argc, char **argv)
{
struct rt_audio_caps caps;
rt_uint8_t *record_buf = RT_NULL;
rt_uint8_t *tmp_buf = RT_NULL;
int read_len;
int write_len;
int offset = 0;
rt_kprintf("\n");
rt_kprintf("=================================\n");
rt_kprintf(" I2S Record And Playback Test\n");
rt_kprintf("=================================\n");
/******************************************************
* 分配录音总buffer
******************************************************/
record_buf = rt_malloc(RECORD_TOTAL_SIZE);
if (record_buf == RT_NULL)
{
rt_kprintf("malloc record_buf failed\n");
return -1;
}
rt_memset(record_buf, 0, RECORD_TOTAL_SIZE);
/******************************************************
* 分配临时buffer
******************************************************/
tmp_buf = rt_malloc(AUDIO_BUF_SIZE);
if (tmp_buf == RT_NULL)
{
rt_kprintf("malloc tmp_buf failed\n");
rt_free(record_buf);
return -1;
}
/******************************************************
* 查找设备
******************************************************/
audio_dev = rt_device_find(AUDIO_DEVICE_NAME);
if (audio_dev == RT_NULL)
{
rt_kprintf("can't find %s\n", AUDIO_DEVICE_NAME);
goto __exit;
}
rt_kprintf("find device: %s\n", AUDIO_DEVICE_NAME);
/******************************************************
* 打开设备
******************************************************/
if (rt_device_open(audio_dev, RT_DEVICE_OFLAG_RDWR) != RT_EOK)
{
rt_kprintf("open device failed\n");
goto __exit;
}
rt_kprintf("open success\n");
/******************************************************
* 配置输入
******************************************************/
caps.main_type = AUDIO_TYPE_INPUT;
caps.sub_type = AUDIO_DSP_PARAM;
caps.udata.config.samplerate = AUDIO_SAMPLERATE;
caps.udata.config.channels = AUDIO_CHANNELS;
caps.udata.config.samplebits = AUDIO_SAMPLEBITS;
if (rt_device_control(audio_dev,
AUDIO_CTL_CONFIGURE,
&caps) != RT_EOK)
{
rt_kprintf("input configure failed\n");
goto __close;
}
/******************************************************
* 配置输出
******************************************************/
caps.main_type = AUDIO_TYPE_OUTPUT;
caps.sub_type = AUDIO_DSP_PARAM;
caps.udata.config.samplerate = AUDIO_SAMPLERATE;
caps.udata.config.channels = AUDIO_CHANNELS;
caps.udata.config.samplebits = AUDIO_SAMPLEBITS;
if (rt_device_control(audio_dev,
AUDIO_CTL_CONFIGURE,
&caps) != RT_EOK)
{
rt_kprintf("output configure failed\n");
goto __close;
}
/******************************************************
* 开始录音
******************************************************/
rt_kprintf("\n");
rt_kprintf("Start recording %d seconds...\n",
RECORD_SECONDS);
offset = 0;
while (offset < RECORD_TOTAL_SIZE)
{
read_len = rt_device_read(audio_dev,
0,
tmp_buf,
AUDIO_BUF_SIZE);
if (read_len > 0)
{
rt_memcpy(record_buf + offset,
tmp_buf,
read_len);
offset += read_len;
}
else
{
rt_thread_mdelay(10);
}
}
rt_kprintf("\n");
rt_kprintf("Record finished.\n");
/******************************************************
* 等待1秒
******************************************************/
rt_thread_mdelay(1000);
/******************************************************
* 开始播放
******************************************************/
rt_kprintf("Start playback...\n");
offset = 0;
while (offset < RECORD_TOTAL_SIZE)
{
write_len = AUDIO_BUF_SIZE;
if ((offset + write_len) > RECORD_TOTAL_SIZE)
{
write_len = RECORD_TOTAL_SIZE - offset;
}
write_len = rt_device_write(audio_dev,
0,
record_buf + offset,
write_len);
if (write_len > 0)
{
offset += write_len;
}
}
rt_kprintf("\n");
rt_kprintf("Playback finished.\n");
__close:
rt_device_close(audio_dev);
__exit:
if (record_buf)
{
rt_free(record_buf);
}
if (tmp_buf)
{
rt_free(tmp_buf);
}
return 0;
}
MSH_CMD_EXPORT(i2s_record_play_test,
i2s record 5s and playback 5s test);
#endif
|
