zhangzhaopeng
/
sdk-hwV1.3
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

调整alsa参数减小音频延时

This commit is contained in:
张兆鹏 2025-05-13 11:12:24 +08:00
parent 11ea0a9c7f
commit 29bcccd5c9
3 changed files with 7 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
external/eyesee-mpp/middleware/sun8iw21/media/audio/alsa_interface.c vendored
View File

@ -22,8 +22,8 @@
static char aioDebugfsPath[256] = {0}; static char aioDebugfsPath[256] = {0};
static unsigned int updateCnt = 0; static unsigned int updateCnt = 0;
#define PERIOD_SIZE (1024) #define PERIOD_SIZE (256)
#define PERIOD_COUNT (8) #define PERIOD_COUNT (4)
#define UPDATE_AIO_DEBUGFS_INFO(update_flag, item_flag, item, type, buf, path) \ #define UPDATE_AIO_DEBUGFS_INFO(update_flag, item_flag, item, type, buf, path) \
do { \ do { \
if (update_flag & item_flag) { \ if (update_flag & item_flag) { \
@ -388,6 +388,7 @@ int alsaSetPcmParams(PCM_CONFIG_S *pcmCfg)
snd_pcm_uframes_t periodSize = PERIOD_SIZE; snd_pcm_uframes_t periodSize = PERIOD_SIZE;
snd_pcm_uframes_t prePeriodSize = periodSize; snd_pcm_uframes_t prePeriodSize = periodSize;
// alogd("size:%d count:%d\n", PERIOD_SIZE, PERIOD_COUNT);
err = snd_pcm_hw_params_set_period_size_near(pcmCfg->handle, params, &periodSize, &dir); err = snd_pcm_hw_params_set_period_size_near(pcmCfg->handle, params, &periodSize, &dir);
if (err < 0) { if (err < 0) {
aloge("set_period_size_near error!"); aloge("set_period_size_near error!");

4
target/allwinner/v851s-fastboot_sl100_back/busybox-init-base-files/etc/asound.conf
View File

@ -118,7 +118,7 @@ pcm.PlaybackRateDmix {
} }
@args.PERIODSIZE { @args.PERIODSIZE {
type integer type integer
default 960 #1024 default 256 #1024
} }
type plug type plug
slave.pcm { slave.pcm {
@ -135,7 +135,7 @@ pcm.PlaybackRateDmix {
rate $SAMPLERATE rate $SAMPLERATE
channels $CHNNUM channels $CHNNUM
period_size $PERIODSIZE period_size $PERIODSIZE
periods 8 periods 4
} }
} }
hooks.0 { hooks.0 {

4
target/allwinner/v851s3-fastboot_sl100_front/busybox-init-base-files/etc/asound.conf
View File

@ -118,7 +118,7 @@ pcm.PlaybackRateDmix {
} }
@args.PERIODSIZE { @args.PERIODSIZE {
type integer type integer
default 960 #1024 default 256 #1024
} }
type plug type plug
slave.pcm { slave.pcm {
@ -135,7 +135,7 @@ pcm.PlaybackRateDmix {
rate $SAMPLERATE rate $SAMPLERATE
channels $CHNNUM channels $CHNNUM
period_size $PERIODSIZE period_size $PERIODSIZE
periods 8 periods 4
} }
} }
hooks.0 { hooks.0 {