1+ #include " es8374_audio_codec.h"
2+
3+ #include < esp_log.h>
4+
5+ static const char TAG[] = " Es8374AudioCodec" ;
6+
7+ Es8374AudioCodec::Es8374AudioCodec (void * i2c_master_handle, i2c_port_t i2c_port, int input_sample_rate, int output_sample_rate,
8+ gpio_num_t mclk, gpio_num_t bclk, gpio_num_t ws, gpio_num_t dout, gpio_num_t din,
9+ gpio_num_t pa_pin, uint8_t es8374_addr, bool use_mclk) {
10+ duplex_ = true ; // 是否双工
11+ input_reference_ = false ; // 是否使用参考输入,实现回声消除
12+ input_channels_ = 1 ; // 输入通道数
13+ input_sample_rate_ = input_sample_rate;
14+ output_sample_rate_ = output_sample_rate;
15+ pa_pin_ = pa_pin;
16+ CreateDuplexChannels (mclk, bclk, ws, dout, din);
17+
18+ // Do initialize of related interface: data_if, ctrl_if and gpio_if
19+ audio_codec_i2s_cfg_t i2s_cfg = {
20+ .port = I2S_NUM_0,
21+ .rx_handle = rx_handle_,
22+ .tx_handle = tx_handle_,
23+ };
24+ data_if_ = audio_codec_new_i2s_data (&i2s_cfg);
25+ assert (data_if_ != NULL );
26+
27+ // Output
28+ audio_codec_i2c_cfg_t i2c_cfg = {
29+ .port = i2c_port,
30+ .addr = es8374_addr,
31+ .bus_handle = i2c_master_handle,
32+ };
33+ ctrl_if_ = audio_codec_new_i2c_ctrl (&i2c_cfg);
34+ assert (ctrl_if_ != NULL );
35+
36+ gpio_if_ = audio_codec_new_gpio ();
37+ assert (gpio_if_ != NULL );
38+
39+ es8374_codec_cfg_t es8374_cfg = {};
40+ es8374_cfg.ctrl_if = ctrl_if_;
41+ es8374_cfg.gpio_if = gpio_if_;
42+ es8374_cfg.codec_mode = ESP_CODEC_DEV_WORK_MODE_BOTH;
43+ es8374_cfg.pa_pin = pa_pin;
44+ codec_if_ = es8374_codec_new (&es8374_cfg);
45+ assert (codec_if_ != NULL );
46+
47+ esp_codec_dev_cfg_t dev_cfg = {
48+ .dev_type = ESP_CODEC_DEV_TYPE_OUT,
49+ .codec_if = codec_if_,
50+ .data_if = data_if_,
51+ };
52+ output_dev_ = esp_codec_dev_new (&dev_cfg);
53+ assert (output_dev_ != NULL );
54+ dev_cfg.dev_type = ESP_CODEC_DEV_TYPE_IN;
55+ input_dev_ = esp_codec_dev_new (&dev_cfg);
56+ assert (input_dev_ != NULL );
57+ esp_codec_set_disable_when_closed (output_dev_, false );
58+ esp_codec_set_disable_when_closed (input_dev_, false );
59+ ESP_LOGI (TAG, " Es8374AudioCodec initialized" );
60+ }
61+
62+ Es8374AudioCodec::~Es8374AudioCodec () {
63+ ESP_ERROR_CHECK (esp_codec_dev_close (output_dev_));
64+ esp_codec_dev_delete (output_dev_);
65+ ESP_ERROR_CHECK (esp_codec_dev_close (input_dev_));
66+ esp_codec_dev_delete (input_dev_);
67+
68+ audio_codec_delete_codec_if (codec_if_);
69+ audio_codec_delete_ctrl_if (ctrl_if_);
70+ audio_codec_delete_gpio_if (gpio_if_);
71+ audio_codec_delete_data_if (data_if_);
72+ }
73+
74+ void Es8374AudioCodec::CreateDuplexChannels (gpio_num_t mclk, gpio_num_t bclk, gpio_num_t ws, gpio_num_t dout, gpio_num_t din) {
75+ assert (input_sample_rate_ == output_sample_rate_);
76+
77+ i2s_chan_config_t chan_cfg = {
78+ .id = I2S_NUM_0,
79+ .role = I2S_ROLE_MASTER,
80+ .dma_desc_num = 6 ,
81+ .dma_frame_num = 240 ,
82+ .auto_clear_after_cb = true ,
83+ .auto_clear_before_cb = false ,
84+ .intr_priority = 0 ,
85+ };
86+ ESP_ERROR_CHECK (i2s_new_channel (&chan_cfg, &tx_handle_, &rx_handle_));
87+
88+ i2s_std_config_t std_cfg = {
89+ .clk_cfg = {
90+ .sample_rate_hz = (uint32_t )output_sample_rate_,
91+ .clk_src = I2S_CLK_SRC_DEFAULT,
92+ .mclk_multiple = I2S_MCLK_MULTIPLE_256,
93+ #ifdef I2S_HW_VERSION_2
94+ .ext_clk_freq_hz = 0 ,
95+ #endif
96+ },
97+ .slot_cfg = {
98+ .data_bit_width = I2S_DATA_BIT_WIDTH_16BIT,
99+ .slot_bit_width = I2S_SLOT_BIT_WIDTH_AUTO,
100+ .slot_mode = I2S_SLOT_MODE_STEREO,
101+ .slot_mask = I2S_STD_SLOT_BOTH,
102+ .ws_width = I2S_DATA_BIT_WIDTH_16BIT,
103+ .ws_pol = false ,
104+ .bit_shift = true ,
105+ #ifdef I2S_HW_VERSION_2
106+ .left_align = true ,
107+ .big_endian = false ,
108+ .bit_order_lsb = false
109+ #endif
110+ },
111+ .gpio_cfg = {
112+ .mclk = mclk,
113+ .bclk = bclk,
114+ .ws = ws,
115+ .dout = dout,
116+ .din = din,
117+ .invert_flags = {
118+ .mclk_inv = false ,
119+ .bclk_inv = false ,
120+ .ws_inv = false
121+ }
122+ }
123+ };
124+
125+ ESP_ERROR_CHECK (i2s_channel_init_std_mode (tx_handle_, &std_cfg));
126+ ESP_ERROR_CHECK (i2s_channel_init_std_mode (rx_handle_, &std_cfg));
127+ ESP_LOGI (TAG, " Duplex channels created" );
128+ }
129+
130+ void Es8374AudioCodec::SetOutputVolume (int volume) {
131+ ESP_ERROR_CHECK (esp_codec_dev_set_out_vol (output_dev_, volume));
132+ AudioCodec::SetOutputVolume (volume);
133+ }
134+
135+ void Es8374AudioCodec::EnableInput (bool enable) {
136+ if (enable == input_enabled_) {
137+ return ;
138+ }
139+ if (enable) {
140+ esp_codec_dev_sample_info_t fs = {
141+ .bits_per_sample = 16 ,
142+ .channel = 1 ,
143+ .channel_mask = 0 ,
144+ .sample_rate = (uint32_t )input_sample_rate_,
145+ .mclk_multiple = 0 ,
146+ };
147+ ESP_ERROR_CHECK (esp_codec_dev_open (input_dev_, &fs));
148+ ESP_ERROR_CHECK (esp_codec_dev_set_in_gain (input_dev_, 40.0 ));
149+ } else {
150+ ESP_ERROR_CHECK (esp_codec_dev_close (input_dev_));
151+ }
152+ AudioCodec::EnableInput (enable);
153+ }
154+
155+ void Es8374AudioCodec::EnableOutput (bool enable) {
156+ if (enable == output_enabled_) {
157+ return ;
158+ }
159+ if (enable) {
160+ // Play 16bit 1 channel
161+ esp_codec_dev_sample_info_t fs = {
162+ .bits_per_sample = 16 ,
163+ .channel = 1 ,
164+ .channel_mask = 0 ,
165+ .sample_rate = (uint32_t )output_sample_rate_,
166+ .mclk_multiple = 0 ,
167+ };
168+ ESP_ERROR_CHECK (esp_codec_dev_open (output_dev_, &fs));
169+ ESP_ERROR_CHECK (esp_codec_dev_set_out_vol (output_dev_, output_volume_));
170+ if (pa_pin_ != GPIO_NUM_NC) {
171+ gpio_set_level (pa_pin_, 1 );
172+ }
173+ } else {
174+ ESP_ERROR_CHECK (esp_codec_dev_close (output_dev_));
175+ if (pa_pin_ != GPIO_NUM_NC) {
176+ gpio_set_level (pa_pin_, 0 );
177+ }
178+ }
179+ AudioCodec::EnableOutput (enable);
180+ }
181+
182+ int Es8374AudioCodec::Read (int16_t * dest, int samples) {
183+ if (input_enabled_) {
184+ ESP_ERROR_CHECK_WITHOUT_ABORT (esp_codec_dev_read (input_dev_, (void *)dest, samples * sizeof (int16_t )));
185+ }
186+ return samples;
187+ }
188+
189+ int Es8374AudioCodec::Write (const int16_t * data, int samples) {
190+ if (output_enabled_) {
191+ ESP_ERROR_CHECK_WITHOUT_ABORT (esp_codec_dev_write (output_dev_, (void *)data, samples * sizeof (int16_t )));
192+ }
193+ return samples;
194+ }
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