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nuttx/audio: add AUDIOIOC_GETAUDIOINFO ioctl

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use AUDIOIOC_GETAUDIOINFO get current audio format

Signed-off-by: yangyalei <yangyalei@xiaomi.com>
This commit is contained in:
yangyalei
2025-05-29 16:31:13 +08:00
committed by Alan C. Assis
parent 877a9af2d1
commit 0af7c985b4
2 changed files with 56 additions and 11 deletions
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audio/audio.c
+55 -11
View File
@@ -73,11 +73,12 @@
struct audio_upperhalf_s
{
uint8_t crefs; /* The number of times the device has been opened */
volatile bool started; /* True: playback is active */
mutex_t lock; /* Supports mutual exclusion */
FAR struct audio_lowerhalf_s *dev; /* lower-half state */
struct file *usermq; /* User mode app's message queue */
uint8_t crefs; /* The number of times the device has been opened */
volatile bool started; /* True: playback is active */
struct audio_info_s info; /* Record the last playing audio format */
mutex_t lock; /* Supports mutual exclusion */
FAR struct audio_lowerhalf_s *dev; /* lower-half state */
struct file *usermq; /* User mode app's message queue */
};
/****************************************************************************
@@ -292,6 +293,42 @@ static ssize_t audio_write(FAR struct file *filep,
return 0;
}
/****************************************************************************
* Name: audio_configure
*
* Description:
* Handle the AUDIOIOC_CONFIGURE ioctl command
*
****************************************************************************/
static int audio_configure(FAR struct audio_upperhalf_s *upper,
FAR const struct audio_caps_desc_s *cap_desc)
{
FAR struct audio_lowerhalf_s *lower = upper->dev;
FAR const struct audio_caps_s *caps = &cap_desc->caps;
int ret = OK;
DEBUGASSERT(lower->ops->configure != NULL);
#ifdef CONFIG_AUDIO_MULTI_SESSION
ret = lower->ops->configure(lower, cap_desc->session, caps);
#else
ret = lower->ops->configure(lower, caps);
#endif
if (ret == OK && (caps->ac_type == AUDIO_TYPE_INPUT ||
caps->ac_type == AUDIO_TYPE_OUTPUT))
{
upper->info.format = caps->ac_subtype;
upper->info.channels = caps->ac_channels;
upper->info.subformat = caps->ac_controls.b[2];
upper->info.samplerate = caps->ac_controls.hw[0] |
(caps->ac_controls.b[3] << 16);
}
return ret;
}
/****************************************************************************
* Name: audio_start
*
@@ -395,17 +432,12 @@ static int audio_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
FAR const struct audio_caps_desc_s *caps =
(FAR const struct audio_caps_desc_s *)((uintptr_t)arg);
DEBUGASSERT(lower->ops->configure != NULL);
audinfo("AUDIOIOC_INITIALIZE: Device=%d\n", caps->caps.ac_type);
/* Call the lower-half driver configure handler */
#ifdef CONFIG_AUDIO_MULTI_SESSION
ret = lower->ops->configure(lower, caps->session, &caps->caps);
#else
ret = lower->ops->configure(lower, &caps->caps);
#endif
ret = audio_configure(upper, caps);
}
break;
@@ -649,6 +681,18 @@ static int audio_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
}
break;
/* AUDIOIOC_GETAUDIOINFO - Get the last playing audio format
*
* ioctl argument - pointer to receive the audio info
*/
case AUDIOIOC_GETAUDIOINFO:
{
memcpy((void *)arg, &upper->info, sizeof(struct audio_info_s));
ret = OK;
}
break;
/* Any unrecognized IOCTL commands might be
* platform-specific ioctl commands
*/
include/nuttx/audio/audio.h
+1
View File
@@ -117,6 +117,7 @@
#define AUDIOIOC_GETLATENCY _AUDIOIOC(19)
#define AUDIOIOC_FLUSH _AUDIOIOC(20)
#define AUDIOIOC_GETPOSITION _AUDIOIOC(21)
#define AUDIOIOC_GETAUDIOINFO _AUDIOIOC(22)
/* Audio Device Types *******************************************************/