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cpu/br28/audio_hearing/audio_sidetone.c
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169
cpu/br28/audio_hearing/audio_sidetone.c
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#include "generic/typedef.h"
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#include "board_config.h"
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#include "media/includes.h"
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#include "audio_config.h"
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#include "sound_device.h"
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#include "audio_sidetone.h"
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#include "system/task.h"
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#if TCFG_SIDETONE_ENABLE
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extern struct audio_dac_hdl dac_hdl;
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#define SIDETONE_BUF_LEN 256
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#define SIDETONE_READBUF_LEN 64 //中断点数设为32，则每次数据长度为64
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static struct audio_sidetone_hdl {
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s16 *sidetone_buf;
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#if (TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)
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s16 *sidetone_buf_lr;
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#endif/*(TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)*/
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cbuffer_t cbuf;
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OS_SEM sem;
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bool busy; //检测任务是否在阻塞态
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bool suspend; //暂停监听
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struct audio_dac_channel dac_ch;
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struct audio_dac_channel_attr attr;
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};
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static struct audio_sidetone_hdl *sidetone_hdl = NULL;
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static inline void audio_pcm_mono_to_dual(s16 *dual_pcm, s16 *mono_pcm, int points)
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{
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s16 *mono = mono_pcm;
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int i = 0;
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u8 j = 0;
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for (i = 0; i < points; i++, mono++) {
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*dual_pcm++ = *mono;
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*dual_pcm++ = *mono;
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}
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}
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static void audio_sidetone_task(void)
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{
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if (!sidetone_hdl) {
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sidetone_hdl = zalloc(sizeof(struct audio_sidetone_hdl));
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if (!sidetone_hdl) {
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printf("zalloc sidetone_hdl err\n");
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return;
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}
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}
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sidetone_hdl->suspend = 1;
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sidetone_hdl->sidetone_buf = zalloc(SIDETONE_BUF_LEN);
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#if (TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)
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sidetone_hdl->sidetone_buf_lr = zalloc(SIDETONE_READBUF_LEN * 2);
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#endif/*(TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)*/
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cbuf_init(&sidetone_hdl->cbuf, sidetone_hdl->sidetone_buf, SIDETONE_BUF_LEN);
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os_sem_create(&sidetone_hdl->sem, 0);
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audio_dac_new_channel(&dac_hdl, &sidetone_hdl->dac_ch);
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sidetone_hdl->attr.delay_time = 6;
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sidetone_hdl->attr.protect_time = 8;
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sidetone_hdl->attr.write_mode = WRITE_MODE_BLOCK;
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audio_dac_channel_set_attr(&sidetone_hdl->dac_ch, &sidetone_hdl->attr);
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sound_pcm_dev_start(&sidetone_hdl->dac_ch, 16000, app_audio_get_volume(APP_AUDIO_STATE_CALL));
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while (1) {
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sidetone_hdl->busy = 0;
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os_sem_pend(&sidetone_hdl->sem, 0);
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sidetone_hdl->busy = 1;
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u16 rlen = cbuf_read(&sidetone_hdl->cbuf, sidetone_hdl->sidetone_buf, SIDETONE_READBUF_LEN);
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if (rlen != SIDETONE_READBUF_LEN) {
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printf("rlen err : %d\n", rlen);
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}
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#if (TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)
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audio_pcm_mono_to_dual(sidetone_hdl->sidetone_buf_lr, sidetone_hdl->sidetone_buf, rlen >> 1);
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u16 wlen = sound_pcm_dev_write(&sidetone_hdl->dac_ch, sidetone_hdl->sidetone_buf_lr, rlen <<= 1);
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#else
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u16 wlen = sound_pcm_dev_write(&sidetone_hdl->dac_ch, sidetone_hdl->sidetone_buf, rlen);
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#endif
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if (wlen != rlen) {
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printf("wlen err : %d\n", wlen);
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}
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}
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}
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/*
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*********************************************************************
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* Audio Sidetone Inbuf
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* Description: 通话监听数据流输入
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* Arguments : data 输入数据地址
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* len 输入数据长度
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* Return : None.
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* Note(s) : None.
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*********************************************************************
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*/
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void audio_sidetone_inbuf(s16 *data, u16 len)
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{
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if (sidetone_hdl && sidetone_hdl->suspend) {
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os_sem_post(&sidetone_hdl->sem);
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u16 wlen = cbuf_write(&sidetone_hdl->cbuf, data, len);
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if (wlen != len) {
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printf("wlen = %d, len = %d\n", wlen, len);
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}
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}
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}
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/*
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*********************************************************************
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* Audio Sidetone Open
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* Description: 打开通话监听
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* Arguments : None.
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* Return : 0成功 其他失败
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* Note(s) : None.
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*********************************************************************
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*/
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int audio_sidetone_open(void)
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{
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if (!sidetone_hdl) {
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task_create(audio_sidetone_task, NULL, "sidetone");//创建监听任务
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return 0;
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}
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return -1;
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}
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/*
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*********************************************************************
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* Audio Sidetone Close
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* Description: 关闭通话监听
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* Arguments : None.
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* Return : 0成功 其他失败
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* Note(s) : None.
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*********************************************************************
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*/
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int audio_sidetone_close(void)
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{
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if (!sidetone_hdl) {
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printf("sidetone already close\n");
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return -1;
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}
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if (!sidetone_hdl->busy) { //任务处于挂起态
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sound_pcm_dev_stop(&sidetone_hdl->dac_ch); //关闭监听
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task_kill("sidetone");
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free(sidetone_hdl->sidetone_buf);
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#if (TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)
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free(sidetone_hdl->sidetone_buf_lr);
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#endif/*(TCFG_AUDIO_DAC_CONNECT_MODE == DAC_OUTPUT_LR)*/
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free(sidetone_hdl);
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sidetone_hdl = NULL;
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return 0;
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}
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return -2;
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}
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/*
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*********************************************************************
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* Audio Sidetone Suspend
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* Description: 暂停通话监听
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* Arguments : None.
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* Return : 0成功 其他失败
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* Note(s) : None.
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*********************************************************************
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*/
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int audio_sidetone_suspend(void)
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{
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if (sidetone_hdl) {
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sidetone_hdl->suspend ? (sidetone_hdl->suspend = 0) : (sidetone_hdl->suspend = 1);
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return 0;
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}
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return -1;
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}
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#endif/*TCFG_SIDETONE_ENABLE*/
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