AUDPRC
AUDPRC(audio processer) 完成音频通路的特定数据处理功能。主要功能包括：\
音频采样率转换\
音频均衡器EQ，用来匹配输出音频设备\
混音功能，将不同源的音频混音后输出，支持不同采样率音频的混音\
支持数据输入输出来自I2S/MEM/AUDCODEC\
支持mono/stero多种数据格式，包括左右声道数据的交织和解交织
使用 AUDPRC HAL 驱动程序：
HAL AUDPRC sample for TX：
const audprc_src_table_t src_table[] =
{
{8000, 11025, 0, 0, 0, 0, 0, 0, 1, 0x2e709c60},
{8000, 12000, 0, 0, 0, 0, 0, 0, 1, 0x2aaaaaa8},
{8000, 16000, 1, 0, 0, 0, 0, 0, 0, 0},
{8000, 22050, 1, 0, 0, 0, 0, 0, 1, 0x2e706d80},
{8000, 24000, 1, 0, 1, 0, 0, 0, 1, 0x55553700},
{8000, 32000, 1, 0, 1, 0, 0, 0, 0, 0},
{8000, 44100, 1, 0, 1, 0, 0, 0, 1, 0x2e702f00},
{8000, 48000, 1, 0, 1, 0, 0, 0, 1, 0x2aaa5d00},
{11025, 8000, 0, 0, 0, 0, 0, 0, 1, 0x583313d9},
{11025, 12000, 0, 0, 0, 0, 0, 0, 1, 0x3accb7e6},
{11025, 16000, 0, 0, 0, 0, 0, 0, 1, 0x2c197464},
{11025, 22050, 1, 0, 0, 0, 0, 0, 0, 0},
{11025, 24000, 1, 0, 0, 0, 0, 0, 1, 0x3accb7e6},
{11025, 32000, 1, 0, 0, 0, 0, 0, 1, 0x2c197464},
{11025, 44100, 1, 0, 1, 0, 0, 0, 0, 0},
{11025, 48000, 1, 0, 1, 0, 0, 0, 1, 0x3acc61c4},
{12000, 8000, 1, 1, 0, 0, 0, 0, 1, 0x2fffeef0},
{12000, 11025, 0, 0, 0, 0, 0, 0, 1, 0x45a8d320},
{12000, 16000, 0, 0, 0, 0, 0, 0, 1, 0x2fffd780},
{12000, 22050, 1, 0, 0, 0, 0, 0, 1, 0x45a8a440},
{12000, 24000, 1, 0, 0, 0, 0, 0, 0, 0},
{12000, 32000, 1, 0, 0, 0, 0, 0, 1, 0x2fffd780},
{12000, 44100, 1, 0, 1, 0, 0, 0, 1, 0x45a84680},
{12000, 48000, 1, 0, 1, 0, 0, 0, 0, 0},
{16000, 8000, 1, 1, 0, 0, 0, 0, 0, 0},
{16000, 11025, 0, 0, 0, 0, 0, 0, 1, 0x5ce11980},
{16000, 12000, 0, 0, 0, 0, 0, 0, 1, 0x55553700},
{16000, 22050, 0, 0, 0, 0, 0, 0, 1, 0x2e706d80},
{16000, 24000, 0, 0, 0, 0, 0, 0, 1, 0x2aaa9b80},
{16000, 32000, 1, 0, 0, 0, 0, 0, 0, 0},
{16000, 44100, 1, 0, 0, 0, 0, 0, 1, 0x2e702f00},
{16000, 48000, 1, 0, 0, 0, 0, 0, 1, 0x2aaa5d00},
{22050, 8000, 1, 1, 0, 0, 0, 0, 1, 0x583313d9},
{22050, 11025, 1, 1, 0, 0, 0, 0, 0, 0},
{22050, 12000, 1, 1, 0, 0, 0, 0, 1, 0x3accb7e6},
{22050, 16000, 0, 0, 0, 0, 0, 0, 1, 0x5832e8c8},
{22050, 24000, 0, 0, 0, 0, 0, 0, 1, 0x3accb7e6},
{22050, 32000, 0, 0, 0, 0, 0, 0, 1, 0x2c197464},
{22050, 44100, 1, 0, 0, 0, 0, 0, 0, 0},
{22050, 48000, 1, 0, 0, 0, 0, 0, 1, 0x3acc61c4},
{24000, 8000, 1, 1, 0, 0, 0, 0, 1, 0x5fffdde0},
{24000, 11025, 1, 1, 0, 0, 0, 0, 1, 0x45a8d320},
{24000, 12000, 1, 1, 0, 0, 0, 0, 0, 0},
{24000, 16000, 1, 1, 0, 0, 0, 0, 1, 0x2fffd780},
{24000, 22050, 0, 0, 0, 0, 0, 0, 1, 0x45a8a440},
{24000, 32000, 0, 0, 0, 0, 0, 0, 1, 0x2fffd780},
{24000, 44100, 1, 0, 0, 0, 0, 0, 1, 0x45a84680},
{24000, 48000, 1, 0, 0, 0, 0, 0, 0, 0},
{32000, 8000, 1, 1, 1, 1, 0, 0, 0, 0},
{32000, 11025, 1, 1, 0, 0, 0, 0, 1, 0x5ce11980},
{32000, 12000, 1, 1, 0, 0, 0, 0, 1, 0x55553700},
{32000, 16000, 1, 1, 0, 0, 0, 0, 0, 0},
{32000, 22050, 1, 1, 0, 0, 0, 0, 1, 0x2e706d80},
{32000, 24000, 0, 0, 0, 0, 0, 0, 1, 0x55553700},
{32000, 44100, 0, 0, 0, 0, 0, 0, 1, 0x2e702f00},
{32000, 48000, 0, 0, 0, 0, 0, 0, 1, 0x2aaa5d00},
{44100, 8000, 1, 1, 1, 1, 0, 0, 1, 0x583313d9},
{44100, 11025, 1, 1, 1, 1, 0, 0, 0, 0},
{44100, 12000, 1, 1, 1, 1, 0, 0, 1, 0x3accb7e6},
{44100, 16000, 1, 1, 0, 0, 0, 0, 1, 0x5832e8c8},
{44100, 22050, 1, 1, 0, 0, 0, 0, 0, 0},
{44100, 24000, 1, 1, 0, 0, 0, 0, 1, 0x3accb7e6},
{44100, 32000, 0, 0, 0, 0, 0, 0, 1, 0x5832e8c8},
{44100, 48000, 0, 0, 0, 0, 0, 0, 1, 0x3acc61c4},
{48000, 8000, 1, 1, 1, 1, 1, 1, 1, 0x2fffeef0},
{48000, 11025, 1, 1, 1, 1, 0, 0, 1, 0x45a8d320},
{48000, 12000, 1, 1, 1, 1, 0, 0, 0, 0},
{48000, 16000, 1, 1, 0, 0, 0, 0, 1, 0x5fffaf00},
{48000, 22050, 1, 1, 0, 0, 0, 0, 1, 0x45a8a440},
{48000, 24000, 1, 1, 0, 0, 0, 0, 0, 0},
{48000, 32000, 1, 1, 0, 0, 0, 0, 1, 0x2fffd780},
{48000, 44100, 0, 0, 0, 0, 0, 0, 1, 0x45a84680},
};
AUDPRC_HandleTypeDef *haprc = &aprc;
AUDPRC_ChnlCfgTypeDef cfg;
int res = HAL_AUDPRC_Init(haprc);
cfg.dma_mask = 0;
cfg.en = 1;
cfg.format = caps->udata.config.samplefmt == 16 ? 0 : 1;
if (cfg.format == 0) // only 16 bit support stereo
cfg.mode = caps->udata.config.channels == 1 ? 0 : 1;
else
cfg.mode = 0;
HAL_AUDPRC_Config_TChanel(haudprc, 3, &cfg);
haudprc->Init.dac_cfg.src_hbf3_mode = src_table[i].hbf3_mode;
haudprc->Init.dac_cfg.src_hbf3_en = src_table[i].hbf3_en;
haudprc->Init.dac_cfg.src_hbf2_mode = src_table[i].hbf2_mode;
haudprc->Init.dac_cfg.src_hbf2_en = src_table[i].hbf2_en;
haudprc->Init.dac_cfg.src_hbf1_mode = src_table[i].hbf1_mode;
haudprc->Init.dac_cfg.src_hbf1_en = src_table[i].hbf1_en;
haudprc->Init.dac_cfg.src_sinc_en = src_table[i].sinc_en;
haudprc->Init.dac_cfg.sinc_ratio = src_table[i].sinc_ratio;
haudprc->Init.dac_cfg.src_ch_en = 3;
HAL_AUDPRC_Config_DACPath(haudprc, &(haudprc->Init.dac_cfg));
res = HAL_AUDPRC_Transmit_DMA(haudprc, haudprc->buf[HAL_AUDPRC_TX_CH0], haudprc->bufSize, HAL_AUDPRC_TX_CH0);
HAL_NVIC_EnableIRQ(AUDPRC_TX0_DMA_IRQ);
/* enable AUDPRC at last*/
__HAL_AUDPRC_ENABLE(haudprc);
HAL AUDPRC sample for RX：
AUDPRC_HandleTypeDef haprc;
AUDPRC_ChnlCfgTypeDef cfg;
int res = HAL_AUDPRC_Init(haprc);
cfg.dma_mask = 0;
cfg.en = 1;
cfg.format = caps->udata.config.samplefmt == 16 ? 0 : 1;
if (cfg.format == 0) // only 16 bit support stereo
cfg.mode = caps->udata.config.channels == 1 ? 0 : 1;
else
cfg.mode = 0;
HAL_AUDPRC_Config_RChanel(haudprc, 0, &cfg);
haudprc->Init.adc_cfg.src_hbf3_mode = src_table[i].hbf3_mode;
haudprc->Init.adc_cfg.src_hbf3_en = src_table[i].hbf3_en;
haudprc->Init.adc_cfg.src_hbf2_mode = src_table[i].hbf2_mode;
haudprc->Init.adc_cfg.src_hbf2_en = src_table[i].hbf2_en;
haudprc->Init.adc_cfg.src_hbf1_mode = src_table[i].hbf1_mode;
haudprc->Init.adc_cfg.src_hbf1_en = src_table[i].hbf1_en;
haudprc->Init.adc_cfg.src_sinc_en = src_table[i].sinc_en;
haudprc->Init.adc_cfg.sinc_ratio = src_table[i].sinc_ratio;
haudprc->Init.adc_cfg.src_ch_en = 3;
HAL_AUDPRC_Config_ADCPath(haudprc, &(haudprc->Init.adc_cfg));
res = HAL_AUDPRC_Receive_DMA(haudprc, haudprc->buf[HAL_AUDPRC_RX_CH0], haudprc->bufSize, HAL_AUDPRC_RX_CH0);
HAL_NVIC_EnableIRQ(AUDPRC_RX0_DMA_IRQ);
/* enable AUDPRC at last*/
__HAL_AUDPRC_ENABLE(haudprc);