#include "box_audio_codec_lite.h"
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#include <esp_log.h>
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#include <driver/i2c_master.h>
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#include <driver/i2s_tdm.h>
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#include <cstring>
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static const char TAG[] = "BoxAudioCodecLite";
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BoxAudioCodecLite::BoxAudioCodecLite(void* i2c_master_handle, int input_sample_rate, int output_sample_rate,
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gpio_num_t mclk, gpio_num_t bclk, gpio_num_t ws, gpio_num_t dout, gpio_num_t din,
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gpio_num_t pa_pin, bool input_reference) {
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duplex_ = true; // 是否双工
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input_reference_ = input_reference; // 是否使用参考输入，实现回声消除
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if (input_reference) {
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ref_buffer_.resize(960 * 2);
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}
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input_channels_ = 2 + input_reference_; // 输入通道数
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input_sample_rate_ = input_sample_rate;
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output_sample_rate_ = output_sample_rate;
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CreateDuplexChannels(mclk, bclk, ws, dout, din);
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// Do initialize of related interface: data_if, ctrl_if and gpio_if
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audio_codec_i2s_cfg_t i2s_cfg = {
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.port = I2S_NUM_0,
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.rx_handle = rx_handle_,
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.tx_handle = tx_handle_,
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};
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data_if_ = audio_codec_new_i2s_data(&i2s_cfg);
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assert(data_if_ != NULL);
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// Output
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audio_codec_i2c_cfg_t i2c_cfg = {
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.port = (i2c_port_t)1,
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.addr = ES8156_CODEC_DEFAULT_ADDR,
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.bus_handle = i2c_master_handle,
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};
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out_ctrl_if_ = audio_codec_new_i2c_ctrl(&i2c_cfg);
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assert(out_ctrl_if_ != NULL);
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gpio_if_ = audio_codec_new_gpio();
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assert(gpio_if_ != NULL);
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es8156_codec_cfg_t cfg = {};
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cfg.ctrl_if = out_ctrl_if_;
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cfg.gpio_if = gpio_if_;
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cfg.pa_pin = pa_pin;
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cfg.hw_gain.pa_voltage = 5.0;
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cfg.hw_gain.codec_dac_voltage = 3.3;
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out_codec_if_ = es8156_codec_new(&cfg);
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assert(out_codec_if_ != NULL);
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esp_codec_dev_cfg_t dev_cfg = {
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.dev_type = ESP_CODEC_DEV_TYPE_OUT,
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.codec_if = out_codec_if_,
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.data_if = data_if_,
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};
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output_dev_ = esp_codec_dev_new(&dev_cfg);
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assert(output_dev_ != NULL);
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// Input
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i2c_cfg.addr = ES7243E_CODEC_DEFAULT_ADDR;
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in_ctrl_if_ = audio_codec_new_i2c_ctrl(&i2c_cfg);
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assert(in_ctrl_if_ != NULL);
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es7243e_codec_cfg_t es7243_cfg = {};
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es7243_cfg.ctrl_if = in_ctrl_if_;
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in_codec_if_ = es7243e_codec_new(&es7243_cfg);
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assert(in_codec_if_ != NULL);
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dev_cfg.dev_type = ESP_CODEC_DEV_TYPE_IN;
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dev_cfg.codec_if = in_codec_if_;
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input_dev_ = esp_codec_dev_new(&dev_cfg);
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assert(input_dev_ != NULL);
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ESP_LOGI(TAG, "BoxAudioDevice initialized");
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}
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BoxAudioCodecLite::~BoxAudioCodecLite() {
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ESP_ERROR_CHECK(esp_codec_dev_close(output_dev_));
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esp_codec_dev_delete(output_dev_);
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ESP_ERROR_CHECK(esp_codec_dev_close(input_dev_));
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esp_codec_dev_delete(input_dev_);
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audio_codec_delete_codec_if(in_codec_if_);
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audio_codec_delete_ctrl_if(in_ctrl_if_);
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audio_codec_delete_codec_if(out_codec_if_);
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audio_codec_delete_ctrl_if(out_ctrl_if_);
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audio_codec_delete_gpio_if(gpio_if_);
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audio_codec_delete_data_if(data_if_);
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}
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void BoxAudioCodecLite::CreateDuplexChannels(gpio_num_t mclk, gpio_num_t bclk, gpio_num_t ws, gpio_num_t dout, gpio_num_t din) {
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assert(input_sample_rate_ == output_sample_rate_);
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i2s_chan_config_t chan_cfg = {
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.id = I2S_NUM_0,
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.role = I2S_ROLE_MASTER,
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.dma_desc_num = AUDIO_CODEC_DMA_DESC_NUM,
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.dma_frame_num = AUDIO_CODEC_DMA_FRAME_NUM,
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.auto_clear_after_cb = true,
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.auto_clear_before_cb = false,
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.intr_priority = 0,
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};
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ESP_ERROR_CHECK(i2s_new_channel(&chan_cfg, &tx_handle_, &rx_handle_));
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i2s_std_config_t std_cfg = {
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.clk_cfg = {
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.sample_rate_hz = (uint32_t)output_sample_rate_,
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.clk_src = I2S_CLK_SRC_DEFAULT,
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.ext_clk_freq_hz = 0,
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.mclk_multiple = I2S_MCLK_MULTIPLE_256
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},
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.slot_cfg = I2S_STD_PHILIP_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_MONO),
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.gpio_cfg = {
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.mclk = mclk,
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.bclk = bclk,
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.ws = ws,
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.dout = dout,
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.din = I2S_GPIO_UNUSED,
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.invert_flags = {
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.mclk_inv = false,
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.bclk_inv = false,
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.ws_inv = false
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}
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}
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};
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i2s_tdm_config_t tdm_cfg = {
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.clk_cfg = {
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.sample_rate_hz = (uint32_t)input_sample_rate_,
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.clk_src = I2S_CLK_SRC_DEFAULT,
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.ext_clk_freq_hz = 0,
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.mclk_multiple = I2S_MCLK_MULTIPLE_256,
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.bclk_div = 8,
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},
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.slot_cfg = {
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.data_bit_width = I2S_DATA_BIT_WIDTH_16BIT,
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.slot_bit_width = I2S_SLOT_BIT_WIDTH_AUTO,
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.slot_mode = I2S_SLOT_MODE_STEREO,
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.slot_mask = i2s_tdm_slot_mask_t(I2S_TDM_SLOT0 | I2S_TDM_SLOT1 | I2S_TDM_SLOT2 | I2S_TDM_SLOT3),
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.ws_width = I2S_TDM_AUTO_WS_WIDTH,
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.ws_pol = false,
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.bit_shift = true,
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.left_align = false,
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.big_endian = false,
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.bit_order_lsb = false,
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.skip_mask = false,
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.total_slot = I2S_TDM_AUTO_SLOT_NUM
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},
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.gpio_cfg = {
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.mclk = mclk,
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.bclk = bclk,
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.ws = ws,
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.dout = I2S_GPIO_UNUSED,
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.din = din,
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.invert_flags = {
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.mclk_inv = false,
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.bclk_inv = false,
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.ws_inv = false
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}
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}
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};
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ESP_ERROR_CHECK(i2s_channel_init_std_mode(tx_handle_, &std_cfg));
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ESP_ERROR_CHECK(i2s_channel_init_tdm_mode(rx_handle_, &tdm_cfg));
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ESP_ERROR_CHECK(i2s_channel_enable(tx_handle_));
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ESP_ERROR_CHECK(i2s_channel_enable(rx_handle_));
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ESP_LOGI(TAG, "Duplex channels created");
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}
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void BoxAudioCodecLite::SetOutputVolume(int volume) {
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ESP_ERROR_CHECK(esp_codec_dev_set_out_vol(output_dev_, volume));
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AudioCodec::SetOutputVolume(volume);
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}
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void BoxAudioCodecLite::EnableInput(bool enable) {
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if (enable == input_enabled_) {
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return;
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}
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if (enable) {
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esp_codec_dev_sample_info_t fs = {
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.bits_per_sample = 16,
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.channel = (uint8_t)(input_channels_ - input_reference_),
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.channel_mask = 0,
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.sample_rate = (uint32_t)input_sample_rate_,
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.mclk_multiple = 0,
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};
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for (int i = 0;i < fs.channel; i++) {
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fs.channel_mask |= ESP_CODEC_DEV_MAKE_CHANNEL_MASK(i);
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}
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ESP_ERROR_CHECK(esp_codec_dev_open(input_dev_, &fs));
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// 麦克风增益解决收音太小的问题
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ESP_ERROR_CHECK(esp_codec_dev_set_in_gain(input_dev_, 37.5));
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} else {
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ESP_ERROR_CHECK(esp_codec_dev_close(input_dev_));
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}
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AudioCodec::EnableInput(enable);
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}
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void BoxAudioCodecLite::EnableOutput(bool enable) {
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if (enable == output_enabled_) {
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return;
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}
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if (enable) {
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// Play 16bit 1 channel
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esp_codec_dev_sample_info_t fs = {
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.bits_per_sample = 16,
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.channel = 1,
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.channel_mask = 0,
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.sample_rate = (uint32_t)output_sample_rate_,
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.mclk_multiple = 0,
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};
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ESP_ERROR_CHECK(esp_codec_dev_open(output_dev_, &fs));
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ESP_ERROR_CHECK(esp_codec_dev_set_out_vol(output_dev_, output_volume_));
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} else {
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ESP_ERROR_CHECK(esp_codec_dev_close(output_dev_));
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}
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AudioCodec::EnableOutput(enable);
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}
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int BoxAudioCodecLite::Read(int16_t* dest, int samples) {
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if (input_enabled_) {
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if (!input_reference_) {
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ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_read(input_dev_, (void*)dest, samples * sizeof(int16_t)));
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}
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else {
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int size = samples / input_channels_;
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int channels = input_channels_ - input_reference_;
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std::vector<int16_t> data(size * channels);
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// read mic data
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ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_read(input_dev_, (void*)data.data(), data.size() * sizeof(int16_t)));
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int j = 0;
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int i = 0;
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while (i< samples) {
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// mic data
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for (int p = 0; p < channels; p++) {
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dest[i++] = data[j++];
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}
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// ref data
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dest[i++] = read_pos_ < write_pos_? ref_buffer_[read_pos_++] : 0;
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}
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if (read_pos_ == write_pos_) {
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read_pos_ = write_pos_ = 0;
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}
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}
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}
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return samples;
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}
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int BoxAudioCodecLite::Write(const int16_t* data, int samples) {
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if (output_enabled_) {
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ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_write(output_dev_, (void*)data, samples * sizeof(int16_t)));
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if (input_reference_) { // 板子不支持硬件回采，采用缓存播放缓冲来实现回声消除
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if (write_pos_ - read_pos_ + samples > ref_buffer_.size()) {
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assert(ref_buffer_.size() >= samples);
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// 写溢出，只保留最近的数据
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read_pos_ = write_pos_ + samples - ref_buffer_.size();
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}
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if (read_pos_) {
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if (write_pos_ != read_pos_) {
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memmove(ref_buffer_.data(), ref_buffer_.data() + read_pos_, (write_pos_ - read_pos_) * sizeof(int16_t));
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}
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write_pos_ -= read_pos_;
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read_pos_ = 0;
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}
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memcpy(&ref_buffer_[write_pos_], data, samples * sizeof(int16_t));
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write_pos_ += samples;
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}
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}
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return samples;
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}
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