583 lines
16 KiB
C
583 lines
16 KiB
C
#include "asm/includes.h"
|
||
#include "media/includes.h"
|
||
#include "system/includes.h"
|
||
#include "device/uac_stream.h"
|
||
#include "audio_enc.h"
|
||
#include "app_main.h"
|
||
#include "user_cfg_id.h"
|
||
#include "board_config.h"
|
||
/* #include "application/audio_echo_reverb.h" */
|
||
/*usb mic的数据是否经过AEC,包括里面的ANS模块*/
|
||
#define USB_MIC_AEC_EN 0
|
||
/*AEC模块只能处理16k数据，如果经过aec，就需要对输出数据做变采样*/
|
||
#define USB_MIC_SRC_ENABLE 1 //同步以及变采样使能
|
||
|
||
|
||
#if USB_MIC_AEC_EN
|
||
#include "aec_user.h"
|
||
#endif/*USB_MIC_AEC_EN*/
|
||
|
||
#if USB_MIC_SRC_ENABLE
|
||
/* #ifdef CONFIG_MEDIA_DEVELOP_ENABLE */
|
||
#include "audio_track.h"
|
||
/* #endif */
|
||
#include "Resample_api.h"
|
||
#endif/*USB_MIC_SRC_ENABLE*/
|
||
|
||
#if TCFG_PC_ENABLE
|
||
|
||
#define PCM_ENC2USB_OUTBUF_LEN (5 * 1024)
|
||
|
||
#define USB_MIC_BUF_NUM 3
|
||
#define USB_MIC_CH_NUM 1
|
||
#define USB_MIC_IRQ_POINTS 256
|
||
#define USB_MIC_BUFS_SIZE (USB_MIC_CH_NUM * USB_MIC_BUF_NUM * USB_MIC_IRQ_POINTS)
|
||
|
||
#define USB_MIC_STOP 0x00
|
||
#define USB_MIC_START 0x01
|
||
|
||
#ifndef VM_USB_MIC_GAIN
|
||
#define VM_USB_MIC_GAIN 5
|
||
#endif
|
||
|
||
extern struct audio_adc_hdl adc_hdl;
|
||
extern u16 uac_get_mic_vol(const u8 usb_id);
|
||
extern int usb_output_sample_rate();
|
||
#if USB_MIC_SRC_ENABLE
|
||
typedef struct {
|
||
u8 start;
|
||
u8 busy;
|
||
u16 in_sample_rate;
|
||
u32 *runbuf;
|
||
s16 output[320 * 3 + 16];
|
||
RS_STUCT_API *ops;
|
||
void *audio_track;
|
||
u8 input_ch;
|
||
} usb_mic_sw_src_t;
|
||
static usb_mic_sw_src_t *usb_mic_src = NULL;
|
||
#endif/*USB_MIC_SRC_ENABLE*/
|
||
|
||
|
||
|
||
struct _usb_mic_hdl {
|
||
struct audio_adc_output_hdl adc_output;
|
||
struct adc_mic_ch mic_ch;
|
||
s16 adc_buf[USB_MIC_BUFS_SIZE];
|
||
enum enc_source source;
|
||
|
||
cbuffer_t output_cbuf;
|
||
u8 *output_buf;//[PCM_ENC2USB_OUTBUF_LEN];
|
||
u8 rec_tx_channels;
|
||
u8 mic_data_ok;/*mic数据等到一定长度再开始发送*/
|
||
u8 status;
|
||
u8 drop_data; //用来丢掉刚开mic的前几帧数据
|
||
#if TCFG_USB_MIC_ECHO_ENABLE
|
||
ECHO_API_STRUCT *p_echo_hdl;
|
||
#endif
|
||
};
|
||
|
||
static struct _usb_mic_hdl *usb_mic_hdl = NULL;
|
||
#if TCFG_USB_MIC_ECHO_ENABLE
|
||
ECHO_PARM_SET usbmic_echo_parm_default = {
|
||
.delay = 200, //回声的延时时间 0-300ms
|
||
.decayval = 50, // 0-70%
|
||
.direct_sound_enable = 1, //直达声使能 0/1
|
||
.filt_enable = 1, //发散滤波器使能
|
||
};
|
||
EF_REVERB_FIX_PARM usbmic_echo_fix_parm_default = {
|
||
.wetgain = 2048, ////湿声增益：[0:4096]
|
||
.drygain = 4096, ////干声增益: [0:4096]
|
||
.sr = MIC_EFFECT_SAMPLERATE, ////采样率
|
||
.max_ms = 200, ////所需要的最大延时，影响 need_buf 大小
|
||
};
|
||
#endif
|
||
static int usb_audio_mic_sync(u32 data_size)
|
||
{
|
||
#if 0
|
||
int change_point = 0;
|
||
|
||
if (data_size > __this->rec_top_size) {
|
||
change_point = -1;
|
||
} else if (data_size < __this->rec_bottom_size) {
|
||
change_point = 1;
|
||
}
|
||
|
||
if (change_point) {
|
||
struct audio_pcm_src src;
|
||
src.resample = 0;
|
||
src.ratio_i = (1024) * 2;
|
||
src.ratio_o = (1024 + change_point) * 2;
|
||
src.convert = 1;
|
||
dev_ioctl(__this->rec_dev, AUDIOC_PCM_RATE_CTL, (u32)&src);
|
||
}
|
||
#endif
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int usb_audio_mic_tx_handler(int event, void *data, int len)
|
||
{
|
||
if (usb_mic_hdl == NULL) {
|
||
return 0;
|
||
}
|
||
if (usb_mic_hdl->status == USB_MIC_STOP) {
|
||
return 0;
|
||
}
|
||
|
||
int i = 0;
|
||
int r_len = 0;
|
||
u8 ch = 0;
|
||
u8 double_read = 0;
|
||
|
||
/* int rlen = 0; */
|
||
|
||
if (usb_mic_hdl->mic_data_ok == 0) {
|
||
if (usb_mic_hdl->output_cbuf.data_len > (PCM_ENC2USB_OUTBUF_LEN / 4)) {
|
||
usb_mic_hdl->mic_data_ok = 1;
|
||
}
|
||
//y_printf("mic_tx NULL\n");
|
||
memset(data, 0, len);
|
||
return len;
|
||
}
|
||
|
||
/* usb_audio_mic_sync(size); */
|
||
if (usb_mic_hdl->rec_tx_channels == 2) {
|
||
len = cbuf_read(&usb_mic_hdl->output_cbuf, data, len / 2);
|
||
s16 *tx_pcm = (s16 *)data;
|
||
int cnt = len / 2;
|
||
for (cnt = len / 2; cnt >= 2;) {
|
||
tx_pcm[cnt - 1] = tx_pcm[cnt / 2 - 1];
|
||
tx_pcm[cnt - 2] = tx_pcm[cnt / 2 - 1];
|
||
cnt -= 2;
|
||
}
|
||
len *= 2;
|
||
} else {
|
||
len = cbuf_read(&usb_mic_hdl->output_cbuf, data, len);
|
||
}
|
||
return len;
|
||
}
|
||
|
||
|
||
int usb_audio_mic_write(void *data, u16 len)
|
||
{
|
||
int wlen = len;
|
||
if (usb_mic_hdl) {
|
||
if (usb_mic_hdl->status == USB_MIC_STOP) {
|
||
return len;
|
||
}
|
||
|
||
int outlen = len;
|
||
s16 *obuf = data;
|
||
|
||
#if USB_MIC_SRC_ENABLE
|
||
if (usb_mic_src && usb_mic_src->start) {
|
||
usb_mic_src->busy = 1;
|
||
/* #ifdef CONFIG_MEDIA_DEVELOP_ENABLE */
|
||
u32 sr = usb_output_sample_rate();
|
||
usb_mic_src->ops->set_sr(usb_mic_src->runbuf, sr);
|
||
/* #endif */
|
||
outlen = usb_mic_src->ops->run(usb_mic_src->runbuf, data, len >> 1, usb_mic_src->output);
|
||
usb_mic_src->busy = 0;
|
||
ASSERT(outlen <= (sizeof(usb_mic_src->output) >> 1));
|
||
//printf("16->48k:%d,%d,%d\n",len >> 1,outlen,sizeof(usb_mic_src->output));
|
||
obuf = usb_mic_src->output;
|
||
outlen = outlen << 1;
|
||
}
|
||
#endif/*USB_MIC_SRC_ENABLE*/
|
||
wlen = cbuf_write(&usb_mic_hdl->output_cbuf, obuf, outlen);
|
||
#if 0
|
||
static u32 usb_mic_data_max = 0;
|
||
if (usb_mic_data_max < usb_mic_hdl->output_cbuf.data_len) {
|
||
usb_mic_data_max = usb_mic_hdl->output_cbuf.data_len;
|
||
y_printf("usb_mic_max:%d", usb_mic_data_max);
|
||
}
|
||
#endif
|
||
if (wlen != outlen) {
|
||
r_printf("usb_mic write full:%d-%d\n", wlen, outlen);
|
||
}
|
||
}
|
||
return wlen;
|
||
}
|
||
|
||
static void adc_output_to_cbuf(void *priv, s16 *data, int len)
|
||
{
|
||
if (usb_mic_hdl == NULL) {
|
||
return ;
|
||
}
|
||
if (usb_mic_hdl->status == USB_MIC_STOP) {
|
||
return ;
|
||
}
|
||
|
||
|
||
|
||
switch (usb_mic_hdl->source) {
|
||
case ENCODE_SOURCE_MIC:
|
||
case ENCODE_SOURCE_LINE0_LR:
|
||
case ENCODE_SOURCE_LINE1_LR:
|
||
case ENCODE_SOURCE_LINE2_LR: {
|
||
|
||
#if USB_MIC_SRC_ENABLE
|
||
/* #ifdef CONFIG_MEDIA_DEVELOP_ENABLE */
|
||
if (usb_mic_src && usb_mic_src->audio_track) {
|
||
audio_local_sample_track_in_period(usb_mic_src->audio_track, (len >> 1) / usb_mic_src->input_ch);
|
||
}
|
||
/* #endif */
|
||
#endif/*USB_MIC_SRC_ENABLE*/
|
||
|
||
#if USB_MIC_AEC_EN
|
||
audio_aec_inbuf(data, len);
|
||
#else
|
||
if (usb_mic_hdl->drop_data != 0) {
|
||
usb_mic_hdl-> drop_data--;
|
||
memset(data, 0, len);
|
||
}
|
||
#if TCFG_USB_MIC_ECHO_ENABLE
|
||
if (usb_mic_hdl->p_echo_hdl) {
|
||
run_echo(usb_mic_hdl->p_echo_hdl, data, data, len);
|
||
}
|
||
#endif
|
||
|
||
usb_audio_mic_write(data, len);
|
||
#endif
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
#if USB_MIC_SRC_ENABLE
|
||
static int sw_src_init(u32 in_sr, u32 out_sr)
|
||
{
|
||
usb_mic_src = zalloc(sizeof(usb_mic_sw_src_t));
|
||
ASSERT(usb_mic_src);
|
||
/* usb_mic_src->ops = get_rs16_context(); */
|
||
usb_mic_src->ops = get_rsfast_context();
|
||
g_printf("ops:0x%x\n", usb_mic_src->ops);
|
||
ASSERT(usb_mic_src->ops);
|
||
u32 need_buf = usb_mic_src->ops->need_buf();
|
||
g_printf("runbuf:%d\n", need_buf);
|
||
usb_mic_src->runbuf = malloc(need_buf);
|
||
ASSERT(usb_mic_src->runbuf);
|
||
RS_PARA_STRUCT rs_para_obj;
|
||
rs_para_obj.nch = 1;
|
||
|
||
rs_para_obj.new_insample = in_sr;
|
||
rs_para_obj.new_outsample = out_sr;
|
||
printf("sw src,in = %d,out = %d\n", rs_para_obj.new_insample, rs_para_obj.new_outsample);
|
||
usb_mic_src->ops->open(usb_mic_src->runbuf, &rs_para_obj);
|
||
|
||
/* #ifdef CONFIG_MEDIA_DEVELOP_ENABLE */
|
||
usb_mic_src->input_ch = rs_para_obj.nch;
|
||
usb_mic_src->in_sample_rate = in_sr;
|
||
usb_mic_src->audio_track = audio_local_sample_track_open(usb_mic_src->input_ch, in_sr, 1000);
|
||
/* #endif */
|
||
|
||
usb_mic_src->start = 1;
|
||
return 0;
|
||
}
|
||
|
||
static int sw_src_exit(void)
|
||
{
|
||
if (usb_mic_src) {
|
||
usb_mic_src->start = 0;
|
||
while (usb_mic_src->busy) {
|
||
putchar('w');
|
||
os_time_dly(2);
|
||
}
|
||
|
||
/* #ifdef CONFIG_MEDIA_DEVELOP_ENABLE */
|
||
audio_local_sample_track_close(usb_mic_src->audio_track);
|
||
usb_mic_src->audio_track = NULL;
|
||
/* #endif */
|
||
|
||
local_irq_disable();
|
||
if (usb_mic_src->runbuf) {
|
||
free(usb_mic_src->runbuf);
|
||
usb_mic_src->runbuf = 0;
|
||
}
|
||
free(usb_mic_src);
|
||
usb_mic_src = NULL;
|
||
local_irq_enable();
|
||
printf("sw_src_exit\n");
|
||
}
|
||
printf("sw_src_exit ok\n");
|
||
return 0;
|
||
}
|
||
#endif/*USB_MIC_SRC_ENABLE*/
|
||
|
||
|
||
|
||
#if USB_MIC_AEC_EN
|
||
static int usb_mic_aec_output(s16 *data, u16 len)
|
||
{
|
||
//putchar('k');
|
||
if (usb_mic_hdl == NULL) {
|
||
return len ;
|
||
}
|
||
if (usb_mic_hdl->status == USB_MIC_STOP) {
|
||
return len;
|
||
}
|
||
|
||
int outlen = len;
|
||
s16 *outdat = data;
|
||
/* if (aec_hdl->dump_packet) { */
|
||
/* aec_hdl->dump_packet--; */
|
||
/* //memset(outdat, 0, outlen); */
|
||
/* } */
|
||
u16 wlen = usb_audio_mic_write(outdat, outlen);
|
||
return len;
|
||
|
||
}
|
||
#endif
|
||
|
||
int uac_mic_vol_switch(int vol)
|
||
{
|
||
return vol * 14 / 100;
|
||
}
|
||
|
||
int usb_audio_mic_open(void *_info)
|
||
{
|
||
if (usb_mic_hdl) {
|
||
return 0;
|
||
}
|
||
usb_mic_hdl = zalloc(sizeof(*usb_mic_hdl));
|
||
if (!usb_mic_hdl) {
|
||
return -EFAULT;
|
||
}
|
||
usb_mic_hdl->status = USB_MIC_STOP;
|
||
|
||
usb_mic_hdl->output_buf = zalloc(PCM_ENC2USB_OUTBUF_LEN);
|
||
if (!usb_mic_hdl->output_buf) {
|
||
printf("usb_mic_hdl->output_buf NULL\n");
|
||
|
||
if (usb_mic_hdl) {
|
||
free(usb_mic_hdl);
|
||
usb_mic_hdl = NULL;
|
||
}
|
||
return -EFAULT;
|
||
}
|
||
|
||
u32 sample_rate = (u32)_info & 0xFFFFFF;
|
||
usb_mic_hdl->rec_tx_channels = (u32)_info >> 24;
|
||
usb_mic_hdl->source = ENCODE_SOURCE_MIC;
|
||
printf("usb mic sr:%d ch:%d\n", sample_rate, usb_mic_hdl->rec_tx_channels);
|
||
|
||
|
||
usb_mic_hdl->drop_data = 2; //用来丢掉前几帧数据
|
||
u32 out_sample_rate = sample_rate;
|
||
#if USB_MIC_AEC_EN
|
||
sample_rate = 16000;
|
||
printf("usb mic sr[aec]:%d\n", sample_rate);
|
||
//audio_aec_init(sample_rate);
|
||
audio_aec_open(sample_rate, ANS_EN, usb_mic_aec_output);
|
||
#endif
|
||
|
||
#if USB_MIC_SRC_ENABLE
|
||
sw_src_init(sample_rate, out_sample_rate);
|
||
#endif /*USB_MIC_SRC_ENABLE*/
|
||
|
||
|
||
cbuf_init(&usb_mic_hdl->output_cbuf, usb_mic_hdl->output_buf, PCM_ENC2USB_OUTBUF_LEN);
|
||
|
||
#if TCFG_MIC_EFFECT_ENABLE
|
||
app_var.usb_mic_gain = mic_effect_get_micgain();
|
||
#else
|
||
app_var.usb_mic_gain = uac_mic_vol_switch(uac_get_mic_vol(0));
|
||
#endif//TCFG_MIC_EFFECT_ENABLE
|
||
|
||
#if (TCFG_USB_MIC_DATA_FROM_MICEFFECT)
|
||
mic_effect_to_usbmic_onoff(1);
|
||
#else
|
||
#if 1
|
||
audio_adc_mic_open(&usb_mic_hdl->mic_ch, AUDIO_ADC_MIC_CH, &adc_hdl);
|
||
audio_adc_mic_set_sample_rate(&usb_mic_hdl->mic_ch, sample_rate);
|
||
audio_adc_mic_set_gain(&usb_mic_hdl->mic_ch, app_var.usb_mic_gain);
|
||
audio_adc_mic_set_buffs(&usb_mic_hdl->mic_ch, usb_mic_hdl->adc_buf, USB_MIC_IRQ_POINTS * 2, USB_MIC_BUF_NUM);
|
||
usb_mic_hdl->adc_output.handler = adc_output_to_cbuf;
|
||
audio_adc_add_output_handler(&adc_hdl, &usb_mic_hdl->adc_output);
|
||
audio_adc_mic_start(&usb_mic_hdl->mic_ch);
|
||
#else
|
||
audio_mic_open(&usb_mic_hdl->mic_ch, sample_rate, app_var.usb_mic_gain);
|
||
usb_mic_hdl->adc_output.handler = adc_output_to_cbuf;
|
||
audio_mic_add_output(&usb_mic_hdl->adc_output);
|
||
audio_mic_start(&usb_mic_hdl->mic_ch);
|
||
#endif
|
||
#if TCFG_USB_MIC_ECHO_ENABLE
|
||
usb_mic_hdl->p_echo_hdl = open_echo(&usbmic_echo_parm_default, &usbmic_echo_fix_parm_default);
|
||
if (usb_mic_hdl->p_echo_hdl) {
|
||
update_echo_gain(usb_mic_hdl->p_echo_hdl, usbmic_echo_fix_parm_default.wetgain, usbmic_echo_fix_parm_default.drygain);
|
||
}
|
||
#endif
|
||
#endif//TCFG_USB_MIC_DATA_FROM_MICEFFECT
|
||
set_uac_mic_tx_handler(NULL, usb_audio_mic_tx_handler);
|
||
|
||
usb_mic_hdl->status = USB_MIC_START;
|
||
/* __this->rec_begin = 0; */
|
||
return 0;
|
||
|
||
return -EFAULT;
|
||
}
|
||
|
||
|
||
|
||
/*
|
||
*************************************************************
|
||
*
|
||
* usb mic gain save
|
||
*
|
||
*************************************************************
|
||
*/
|
||
static int usb_mic_gain_save_timer;
|
||
static u8 usb_mic_gain_save_cnt;
|
||
static void usb_audio_mic_gain_save_do(void *priv)
|
||
{
|
||
//printf(" usb_audio_mic_gain_save_do %d\n", usb_mic_gain_save_cnt);
|
||
local_irq_disable();
|
||
if (++usb_mic_gain_save_cnt >= 5) {
|
||
sys_hi_timer_del(usb_mic_gain_save_timer);
|
||
usb_mic_gain_save_timer = 0;
|
||
usb_mic_gain_save_cnt = 0;
|
||
local_irq_enable();
|
||
printf("USB_GAIN_SAVE\n");
|
||
syscfg_write(VM_USB_MIC_GAIN, &app_var.usb_mic_gain, 1);
|
||
return;
|
||
}
|
||
local_irq_enable();
|
||
}
|
||
|
||
static void usb_audio_mic_gain_change(u8 gain)
|
||
{
|
||
local_irq_disable();
|
||
app_var.usb_mic_gain = gain;
|
||
usb_mic_gain_save_cnt = 0;
|
||
if (usb_mic_gain_save_timer == 0) {
|
||
usb_mic_gain_save_timer = sys_hi_timer_add(NULL, usb_audio_mic_gain_save_do, 1000);
|
||
}
|
||
local_irq_enable();
|
||
}
|
||
|
||
int usb_audio_mic_get_gain(void)
|
||
{
|
||
return app_var.usb_mic_gain;
|
||
}
|
||
|
||
void usb_audio_mic_set_gain(int gain)
|
||
{
|
||
if (usb_mic_hdl == NULL) {
|
||
r_printf("usb_mic_hdl NULL gain");
|
||
return;
|
||
}
|
||
gain = uac_mic_vol_switch(gain);
|
||
audio_adc_mic_set_gain(&usb_mic_hdl->mic_ch, gain);
|
||
usb_audio_mic_gain_change(gain);
|
||
}
|
||
int usb_audio_mic_close(void *arg)
|
||
{
|
||
if (usb_mic_hdl == NULL) {
|
||
r_printf("usb_mic_hdl NULL close");
|
||
return 0;
|
||
}
|
||
printf("usb_mic_hdl->status %x\n", usb_mic_hdl->status);
|
||
if (usb_mic_hdl && usb_mic_hdl->status == USB_MIC_START) {
|
||
printf("usb_audio_mic_close in\n");
|
||
usb_mic_hdl->status = USB_MIC_STOP;
|
||
#if USB_MIC_AEC_EN
|
||
audio_aec_close();
|
||
#endif
|
||
#if (TCFG_USB_MIC_DATA_FROM_MICEFFECT)
|
||
mic_effect_to_usbmic_onoff(0);
|
||
#else
|
||
#if 1
|
||
audio_adc_mic_close(&usb_mic_hdl->mic_ch);
|
||
audio_adc_del_output_handler(&adc_hdl, &usb_mic_hdl->adc_output);
|
||
#else
|
||
audio_mic_close(&usb_mic_hdl->mic_ch, &usb_mic_hdl->adc_output);
|
||
#endif
|
||
#if TCFG_USB_MIC_ECHO_ENABLE
|
||
if (usb_mic_hdl->p_echo_hdl) {
|
||
close_echo(usb_mic_hdl->p_echo_hdl);
|
||
}
|
||
#endif
|
||
#endif
|
||
|
||
#if USB_MIC_SRC_ENABLE
|
||
sw_src_exit();
|
||
#endif /*USB_MIC_SRC_ENABLE*/
|
||
cbuf_clear(&usb_mic_hdl->output_cbuf);
|
||
if (usb_mic_hdl) {
|
||
|
||
if (usb_mic_hdl->output_buf) {
|
||
free(usb_mic_hdl->output_buf);
|
||
usb_mic_hdl->output_buf = NULL;
|
||
}
|
||
free(usb_mic_hdl);
|
||
usb_mic_hdl = NULL;
|
||
}
|
||
}
|
||
printf("usb_audio_mic_close out\n");
|
||
|
||
return 0;
|
||
}
|
||
|
||
int usb_mic_stream_sample_rate(void)
|
||
{
|
||
#if USB_MIC_SRC_ENABLE
|
||
/* #ifdef CONFIG_MEDIA_DEVELOP_ENABLE */
|
||
if (usb_mic_src && usb_mic_src->audio_track) {
|
||
int sr = audio_local_sample_track_rate(usb_mic_src->audio_track);
|
||
if ((sr < (usb_mic_src->in_sample_rate + 500)) && (sr > (usb_mic_src->in_sample_rate - 500))) {
|
||
return sr;
|
||
}
|
||
/* printf("uac audio_track reset \n"); */
|
||
local_irq_disable();
|
||
audio_local_sample_track_close(usb_mic_src->audio_track);
|
||
usb_mic_src->audio_track = audio_local_sample_track_open(USB_MIC_CH_NUM, usb_mic_src->in_sample_rate, 1000);
|
||
local_irq_enable();
|
||
return usb_mic_src->in_sample_rate;
|
||
}
|
||
/* #endif */
|
||
#endif /*USB_MIC_SRC_ENABLE*/
|
||
|
||
return 0;
|
||
}
|
||
|
||
u32 usb_mic_stream_size()
|
||
{
|
||
if (!usb_mic_hdl) {
|
||
return 0;
|
||
}
|
||
if (usb_mic_hdl->status == USB_MIC_START) {
|
||
if (usb_mic_hdl) {
|
||
return cbuf_get_data_size(&usb_mic_hdl->output_cbuf);
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
u32 usb_mic_stream_length()
|
||
{
|
||
return PCM_ENC2USB_OUTBUF_LEN;
|
||
}
|
||
|
||
int usb_output_sample_rate()
|
||
{
|
||
int sample_rate = usb_mic_stream_sample_rate();
|
||
int buf_size = usb_mic_stream_size();
|
||
|
||
if (buf_size >= (usb_mic_stream_length() * 3 / 4)) {
|
||
sample_rate += (sample_rate * 5 / 10000);
|
||
/* putchar('+'); */
|
||
}
|
||
if (buf_size <= (usb_mic_stream_length() / 4)) {
|
||
sample_rate -= (sample_rate * 5 / 10000);
|
||
/* putchar('-'); */
|
||
}
|
||
return sample_rate;
|
||
}
|
||
|
||
#endif /* TCFG_APP_PC_EN */
|