ca70e585b1
nxlooper.c: In function 'nxlooper_opendevice':
Error: nxlooper.c:126:15: error: unused variable 'x' [-Werror=unused-variable]
126 | uint8_t x;
| ^
Error: nxlooper.c:125:15: error: unused variable 'supported' [-Werror=unused-variable]
125 | uint8_t supported = true;
| ^~~~~~~~~
In file included from nxlooper.c:40:
nxlooper.c: In function 'nxlooper_loopthread':
Error: nxlooper.c:482:15: error: format '%d' expects argument of type 'int', but argument 3 has type 'ssize_t' {aka 'long int'} [-Werror=format=]
482 | audinfo("message received size %d id%d\n", size, msg.msg_id);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~
| |
| ssize_t {aka long int}
nxlooper.c:482:39: note: format string is defined here
482 | audinfo("message received size %d id%d\n", size, msg.msg_id);
| ~^
| |
| int
| %ld
cc1: all warnings being treated as errors
make[3]: *** [/github/workspace/sources/apps/Application.mk:133: nxlooper.c.github.workspace.sources.apps.system.nxlooper.o] Error 1
nxlooper_main.c: In function 'nxlooper_cmd_loopback':
Error: nxlooper_main.c:209:9: error: implicit declaration of function 'nxlooper_loopraw'; did you mean 'nxlooper_stop'? [-Werror=implicit-function-declaration]
209 | ret = nxlooper_loopraw(plooper, channels, bpsamp,
| ^~~~~~~~~~~~~~~~
| nxlooper_stop
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
1364 lines
37 KiB
C
1364 lines
37 KiB
C
/****************************************************************************
|
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* apps/system/nxlooper/nxlooper.c
|
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*
|
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* Licensed to the Apache Software Foundation (ASF) under one or more
|
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* contributor license agreements. See the NOTICE file distributed with
|
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* this work for additional information regarding copyright ownership. The
|
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
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* "License"); you may not use this file except in compliance with the
|
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* License. You may obtain a copy of the License at
|
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*
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* http://www.apache.org/licenses/LICENSE-2.0
|
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*
|
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
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* License for the specific language governing permissions and limitations
|
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* under the License.
|
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*
|
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****************************************************************************/
|
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|
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/****************************************************************************
|
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* Included Files
|
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****************************************************************************/
|
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|
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#include <nuttx/config.h>
|
|
|
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#include <sys/types.h>
|
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#include <sys/ioctl.h>
|
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|
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#include <stdint.h>
|
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#include <stdbool.h>
|
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#include <stdio.h>
|
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#include <string.h>
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#include <strings.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <errno.h>
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#include <dirent.h>
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#include <debug.h>
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#include <nuttx/audio/audio.h>
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|
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#include "system/nxlooper.h"
|
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|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
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****************************************************************************/
|
|
|
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#define NXLOOPER_STATE_IDLE 0
|
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#define NXLOOPER_STATE_RECORDING 1
|
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#define NXLOOPER_STATE_LOOPING 2
|
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#define NXLOOPER_STATE_PAUSED 3
|
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|
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#define AUDIO_APB_RECORD (1 << 4)
|
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#define AUDIO_APB_PLAY (1 << 5)
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
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****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
|
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* Name: nxlooper_opendevice
|
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*
|
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* nxlooper_opendevice() either searches the Audio system for record and
|
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* playback devices and opens them, or tries to open the preferred devices
|
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* if specified.
|
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*
|
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* Return:
|
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* OK if compatible device opened (searched or preferred)
|
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* -ENODEV if no compatible device opened.
|
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* -ENOENT if preferred device couldn't be opened.
|
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*
|
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****************************************************************************/
|
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|
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static int nxlooper_opendevice(FAR struct nxlooper_s *plooper)
|
|
{
|
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#ifdef CONFIG_NXLOOPER_INCLUDE_PREFERRED_DEVICE
|
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/* If we have a preferred device, then open it */
|
|
|
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if (plooper->playdev[0] != '\0' && plooper->recorddev[0] != '\0')
|
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{
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plooper->playdev_fd = open(plooper->playdev, O_RDWR | O_CLOEXEC);
|
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if (plooper->playdev_fd == -1)
|
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{
|
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int errcode = errno;
|
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DEBUGASSERT(errcode > 0);
|
|
|
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auderr("ERROR: Failed to open plooper->playdev %d\n", -errcode);
|
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return -errcode;
|
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}
|
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|
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plooper->recorddev_fd = open(plooper->recorddev, O_RDWR | O_CLOEXEC);
|
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if (plooper->recorddev_fd == -1)
|
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{
|
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int errcode = errno;
|
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DEBUGASSERT(errcode > 0);
|
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|
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auderr("ERROR: Failed to open plooper->recorddev %d\n", -errcode);
|
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|
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close(plooper->playdev_fd);
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plooper->playdev_fd = -1;
|
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|
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return -errcode;
|
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}
|
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|
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return OK;
|
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}
|
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#endif /* CONFIG_NXLOOPER_INCLUDE_PREFERRED_DEVICE */
|
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|
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#if defined(CONFIG_NXLOOPER_INCLUDE_PREFERRED_DEVICE) && \
|
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defined(CONFIG_NXLOOPER_INCLUDE_DEVICE_SEARCH)
|
|
|
|
else
|
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|
|
#endif
|
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|
|
#ifdef CONFIG_NXLOOPER_INCLUDE_DEVICE_SEARCH
|
|
{
|
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struct audio_caps_s caps;
|
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FAR struct dirent *pdevice;
|
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FAR DIR *dirp;
|
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char path[64];
|
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|
|
/* Search for a device in the audio device directory */
|
|
|
|
#ifdef CONFIG_AUDIO_CUSTOM_DEV_PATH
|
|
#ifdef CONFIG_AUDIO_DEV_ROOT
|
|
dirp = opendir("/dev");
|
|
#else
|
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dirp = opendir(CONFIG_AUDIO_DEV_PATH);
|
|
#endif /* CONFIG_AUDIO_DEV_ROOT */
|
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#else
|
|
dirp = opendir("/dev/audio");
|
|
#endif /* CONFIG_AUDIO_CUSTOM_DEV_PATH */
|
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if (dirp == NULL)
|
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{
|
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int errcode = errno;
|
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DEBUGASSERT(errcode > 0);
|
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|
|
auderr("ERROR: Failed to open /dev/audio: %d\n", -errcode);
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return -errcode;
|
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}
|
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|
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while ((pdevice = readdir(dirp)) != NULL)
|
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{
|
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int dev_fd;
|
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/* We found the next device. Try to open it and
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* get its audio capabilities.
|
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*/
|
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|
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#ifdef CONFIG_AUDIO_CUSTOM_DEV_PATH
|
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#ifdef CONFIG_AUDIO_DEV_ROOT
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snprintf(path, sizeof(path), "/dev/%s", pdevice->d_name);
|
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#else
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snprintf(path, sizeof(path), CONFIG_AUDIO_DEV_PATH "/%s",
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pdevice->d_name);
|
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#endif /* CONFIG_AUDIO_DEV_ROOT */
|
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#else
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snprintf(path, sizeof(path), "/dev/audio/%s", pdevice->d_name);
|
|
#endif /* CONFIG_AUDIO_CUSTOM_DEV_PATH */
|
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|
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if ((dev_fd = open(path, O_RDWR | O_CLOEXEC)) != -1)
|
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{
|
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/* We have the device file open. Now issue an AUDIO ioctls to
|
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* get the capabilities
|
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*/
|
|
|
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caps.ac_len = sizeof(caps);
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caps.ac_type = AUDIO_TYPE_QUERY;
|
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caps.ac_subtype = AUDIO_TYPE_QUERY;
|
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|
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if (ioctl(dev_fd, AUDIOIOC_GETCAPS,
|
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(unsigned long)&caps) == caps.ac_len)
|
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{
|
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if ((plooper->playdev_fd == -1) &&
|
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caps.ac_controls.b[0] & AUDIO_TYPE_OUTPUT)
|
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{
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plooper->playdev_fd = dev_fd;
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}
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else if ((plooper->recorddev_fd == -1) &&
|
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caps.ac_controls.b[0] & AUDIO_TYPE_INPUT)
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{
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plooper->recorddev_fd = dev_fd;
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}
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else
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{
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close(dev_fd);
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}
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if (plooper->recorddev_fd != -1 &&
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plooper->playdev_fd != -1)
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{
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closedir(dirp);
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return OK;
|
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}
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}
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else
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{
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close(dev_fd);
|
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}
|
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}
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}
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closedir(dirp);
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}
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|
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/* Device not found */
|
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|
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auderr("ERROR: Device not found\n");
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if (plooper->playdev_fd != -1)
|
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{
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close(plooper->playdev_fd);
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plooper->playdev_fd = -1;
|
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}
|
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if (plooper->recorddev_fd != -1)
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{
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close(plooper->recorddev_fd);
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plooper->recorddev_fd = -1;
|
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}
|
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#endif /* CONFIG_NXLOOPER_INCLUDE_DEVICE_SEARCH */
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return -ENODEV;
|
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}
|
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|
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/****************************************************************************
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* Name: nxlooper_enqueuerecordbuffer
|
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*
|
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* Description:
|
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* Enqueue the audio buffer in the downstream device. Normally we are
|
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* called with a buffer of data to be enqueued in the audio stream.
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*
|
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* Be we may also receive an empty length buffer (with only the
|
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* AUDIO_APB_FINAL set) in the event of certain read error occurs or in the
|
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* event that the file was an exact multiple of the nmaxbytes size of the
|
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* audio buffer. In that latter case, we have an end of file with no bytes
|
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* read.
|
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*
|
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* These infrequent zero length buffers have to be passed through because
|
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* the include the AUDIO_APB_FINAL flag that is needed to terminate the
|
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* audio stream.
|
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*
|
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****************************************************************************/
|
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|
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static int nxlooper_enqueuerecordbuffer(FAR struct nxlooper_s *plooper,
|
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FAR struct ap_buffer_s *apb)
|
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{
|
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struct audio_buf_desc_s bufdesc;
|
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int ret;
|
|
|
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/* Now enqueue the buffer with the audio device. */
|
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|
|
apb->nbytes = apb->nmaxbytes;
|
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#ifdef CONFIG_AUDIO_MULTI_SESSION
|
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bufdesc.session = plooper->precordses;
|
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#endif
|
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bufdesc.numbytes = apb->nbytes;
|
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bufdesc.u.buffer = apb;
|
|
|
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apb->flags = AUDIO_APB_RECORD;
|
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|
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ret = ioctl(plooper->recorddev_fd, AUDIOIOC_ENQUEUEBUFFER,
|
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(unsigned long)&bufdesc);
|
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if (ret < 0)
|
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{
|
|
int errcode = errno;
|
|
DEBUGASSERT(errcode > 0);
|
|
|
|
auderr("ERROR: AUDIOIOC_ENQUEUEBUFFER ioctl failed: %d\n", errcode);
|
|
return -errcode;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
static int nxlooper_enqueueplaybuffer(FAR struct nxlooper_s *plooper,
|
|
FAR struct ap_buffer_s *apb)
|
|
{
|
|
struct audio_buf_desc_s bufdesc;
|
|
int ret;
|
|
|
|
/* Now enqueue the buffer with the audio device. */
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
bufdesc.session = plooper->pplayses;
|
|
#endif
|
|
bufdesc.numbytes = apb->nbytes;
|
|
bufdesc.u.buffer = apb;
|
|
|
|
apb->flags = AUDIO_APB_PLAY;
|
|
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_ENQUEUEBUFFER,
|
|
(unsigned long)&bufdesc);
|
|
if (ret < 0)
|
|
{
|
|
int errcode = errno;
|
|
DEBUGASSERT(errcode > 0);
|
|
|
|
auderr("ERROR: AUDIOIOC_ENQUEUEBUFFER ioctl failed: %d\n", errcode);
|
|
return -errcode;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_thread_loopthread
|
|
*
|
|
* This is the thread that record the raw audio data and enqueues /
|
|
* dequeues buffers from the selected and opened audio device.
|
|
*
|
|
****************************************************************************/
|
|
|
|
static void *nxlooper_loopthread(pthread_addr_t pvarg)
|
|
{
|
|
FAR struct nxlooper_s *plooper = (FAR struct nxlooper_s *)pvarg;
|
|
FAR struct ap_buffer_s *apb;
|
|
FAR struct ap_buffer_s *apbtemp;
|
|
struct dq_queue_s playdq;
|
|
struct dq_queue_s recorddq;
|
|
struct audio_msg_s msg;
|
|
struct audio_buf_desc_s buf_desc;
|
|
struct ap_buffer_info_s recordbuf_info;
|
|
struct ap_buffer_info_s playbuf_info;
|
|
FAR struct ap_buffer_s **playbufs;
|
|
FAR struct ap_buffer_s **recordbufs;
|
|
unsigned int prio;
|
|
ssize_t size;
|
|
bool running = true;
|
|
int x;
|
|
int ret;
|
|
|
|
audinfo("Entry\n");
|
|
dq_init(&playdq);
|
|
dq_init(&recorddq);
|
|
|
|
/* Query the audio device for it's preferred buffer size / qty */
|
|
|
|
if ((ret = ioctl(plooper->recorddev_fd, AUDIOIOC_GETBUFFERINFO,
|
|
(unsigned long)&recordbuf_info)) != OK)
|
|
{
|
|
/* Driver doesn't report it's buffer size. Use our default. */
|
|
|
|
recordbuf_info.buffer_size = CONFIG_AUDIO_BUFFER_NUMBYTES;
|
|
recordbuf_info.nbuffers = CONFIG_AUDIO_NUM_BUFFERS;
|
|
}
|
|
|
|
/* Create array of pointers to buffers */
|
|
|
|
recordbufs = (FAR struct ap_buffer_s **)
|
|
calloc(recordbuf_info.nbuffers, sizeof(FAR void *));
|
|
if (recordbufs == NULL)
|
|
{
|
|
/* Error allocating memory for buffer storage! */
|
|
|
|
ret = -ENOMEM;
|
|
goto err_out;
|
|
}
|
|
|
|
/* Create our audio pipeline buffers to use for queueing up data */
|
|
|
|
for (x = 0; x < recordbuf_info.nbuffers; x++)
|
|
{
|
|
/* Fill in the buffer descriptor struct to issue an alloc request */
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
buf_desc.session = plooper->precordses;
|
|
#endif
|
|
buf_desc.numbytes = recordbuf_info.buffer_size;
|
|
buf_desc.u.pbuffer = &recordbufs[x];
|
|
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_ALLOCBUFFER,
|
|
(unsigned long)&buf_desc);
|
|
|
|
if (ret != sizeof(buf_desc))
|
|
{
|
|
/* Buffer alloc Operation not supported or error allocating! */
|
|
|
|
auderr("ERROR: Could not allocate buffer %d\n", x);
|
|
goto err_out;
|
|
}
|
|
}
|
|
|
|
/* Fill up the pipeline with enqueued buffers */
|
|
|
|
for (x = 0; x < recordbuf_info.nbuffers; x++)
|
|
{
|
|
/* Write the next buffer of data */
|
|
|
|
ret = nxlooper_enqueuerecordbuffer(plooper, recordbufs[x]);
|
|
if (ret != OK)
|
|
{
|
|
goto err_out;
|
|
}
|
|
}
|
|
|
|
if ((ret = ioctl(plooper->playdev_fd, AUDIOIOC_GETBUFFERINFO,
|
|
(unsigned long)&playbuf_info)) != OK)
|
|
{
|
|
/* Driver doesn't report it's buffer size. Use our default. */
|
|
|
|
playbuf_info.buffer_size = CONFIG_AUDIO_BUFFER_NUMBYTES;
|
|
playbuf_info.nbuffers = CONFIG_AUDIO_NUM_BUFFERS;
|
|
}
|
|
|
|
playbufs = (FAR struct ap_buffer_s **)
|
|
calloc(playbuf_info.nbuffers, sizeof(FAR void *));
|
|
if (playbufs == NULL)
|
|
{
|
|
/* Error allocating memory for buffer storage! */
|
|
|
|
ret = -ENOMEM;
|
|
goto err_out;
|
|
}
|
|
|
|
/* Create our audio pipeline buffers to use for queueing up data */
|
|
|
|
for (x = 0; x < playbuf_info.nbuffers; x++)
|
|
{
|
|
/* Fill in the buffer descriptor struct to issue an alloc request */
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
buf_desc.session = plooper->pplayses;
|
|
#endif
|
|
buf_desc.numbytes = playbuf_info.buffer_size;
|
|
buf_desc.u.pbuffer = &playbufs[x];
|
|
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_ALLOCBUFFER,
|
|
(unsigned long)&buf_desc);
|
|
|
|
if (ret != sizeof(buf_desc))
|
|
{
|
|
/* Buffer alloc Operation not supported or error allocating! */
|
|
|
|
auderr("ERROR: Could not allocate buffer %d\n", x);
|
|
goto err_out;
|
|
}
|
|
|
|
dq_addlast(&playbufs[x]->dq_entry, &playdq);
|
|
}
|
|
|
|
/* Start the audio device */
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_START,
|
|
(unsigned long)plooper->precordses);
|
|
#else
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_START, 0);
|
|
#endif
|
|
if (ret < 0)
|
|
{
|
|
goto err_out;
|
|
}
|
|
else
|
|
{
|
|
plooper->loopstate = NXLOOPER_STATE_RECORDING;
|
|
}
|
|
|
|
/* Loop until we specifically break. running == true means that we are
|
|
* still looping waiting for the loopback to complete. All of the data
|
|
* may have been sent, but the loopback is not complete until we get
|
|
* AUDIO_MSG_STOP message
|
|
*
|
|
* The normal protocol for looping errors detected by the audio driver
|
|
* is as follows:
|
|
*
|
|
* (1) The audio driver will indicated the error by returning a negated
|
|
* error value when the next buffer is enqueued. The upper level
|
|
* then knows that this buffer was not queue.
|
|
* (2) The audio driver must return all queued buffers using the
|
|
* AUDIO_MSG_DEQUEUE message.
|
|
*/
|
|
|
|
while (running)
|
|
{
|
|
size = mq_receive(plooper->mq, (FAR char *)&msg, sizeof(msg), &prio);
|
|
|
|
/* Validate a message was received */
|
|
|
|
audinfo("message received size %zd id%d\n", size, msg.msg_id);
|
|
if (size != sizeof(msg))
|
|
{
|
|
/* Interrupted by a signal? What to do? */
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Perform operation based on message id */
|
|
|
|
switch (msg.msg_id)
|
|
{
|
|
/* An audio buffer is being dequeued by the driver */
|
|
|
|
case AUDIO_MSG_DEQUEUE:
|
|
apb = msg.u.ptr;
|
|
if (apb->flags & AUDIO_APB_PLAY)
|
|
{
|
|
dq_addlast(&apb->dq_entry, &playdq);
|
|
}
|
|
else if (apb->flags & AUDIO_APB_RECORD)
|
|
{
|
|
dq_addlast(&apb->dq_entry, &recorddq);
|
|
}
|
|
|
|
if (dq_count(&playdq) != 0 && dq_count(&recorddq) != 0)
|
|
{
|
|
apbtemp = (struct ap_buffer_s *)dq_remfirst(&recorddq);
|
|
apb = (struct ap_buffer_s *)dq_remfirst(&playdq);
|
|
|
|
apb->nbytes = apbtemp->nbytes;
|
|
memcpy(apb->samp, apbtemp->samp, apbtemp->nbytes);
|
|
|
|
ret = nxlooper_enqueuerecordbuffer(plooper, apbtemp);
|
|
if (ret == OK)
|
|
{
|
|
ret = nxlooper_enqueueplaybuffer(plooper, apb);
|
|
if (ret == OK &&
|
|
plooper->loopstate == NXLOOPER_STATE_RECORDING)
|
|
{
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_START,
|
|
(unsigned long)plooper->pplayses);
|
|
#else
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_START, 0);
|
|
#endif
|
|
if (ret == OK)
|
|
{
|
|
plooper->loopstate = NXLOOPER_STATE_LOOPING;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ret == OK)
|
|
{
|
|
/* Go through to AUDIO_MSG_STOP */
|
|
|
|
break;
|
|
}
|
|
|
|
/* Someone wants to stop the loopback. */
|
|
|
|
case AUDIO_MSG_STOP:
|
|
|
|
/* Send a stop message to the device */
|
|
|
|
audinfo("Stopping looping\n");
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_STOP,
|
|
(unsigned long)plooper->pplayses);
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_STOP,
|
|
(unsigned long)plooper->precordses);
|
|
#else
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_STOP, 0);
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_STOP, 0);
|
|
#endif
|
|
|
|
running = false;
|
|
break;
|
|
|
|
/* Unknown / unsupported message ID */
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Release our audio buffers and unregister / release the device */
|
|
|
|
err_out:
|
|
audinfo("Clean-up and exit\n");
|
|
|
|
if (playbufs != NULL)
|
|
{
|
|
audinfo("Freeing play buffers\n");
|
|
for (x = 0; x < playbuf_info.nbuffers; x++)
|
|
{
|
|
/* Fill in the buffer descriptor struct to issue a free request */
|
|
|
|
if (playbufs[x] != NULL)
|
|
{
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
buf_desc.session = plooper->pplayses;
|
|
#endif
|
|
buf_desc.u.buffer = playbufs[x];
|
|
ioctl(plooper->playdev_fd,
|
|
AUDIOIOC_FREEBUFFER,
|
|
(unsigned long)&buf_desc);
|
|
}
|
|
}
|
|
|
|
/* Free the pointers to the buffers */
|
|
|
|
free(playbufs);
|
|
}
|
|
|
|
if (recordbufs != NULL)
|
|
{
|
|
audinfo("Freeing record buffers\n");
|
|
for (x = 0; x < recordbuf_info.nbuffers; x++)
|
|
{
|
|
/* Fill in the buffer descriptor struct to issue a free request */
|
|
|
|
if (recordbufs[x] != NULL)
|
|
{
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
buf_desc.session = plooper->precordses;
|
|
#endif
|
|
buf_desc.u.buffer = recordbufs[x];
|
|
ioctl(plooper->recorddev_fd,
|
|
AUDIOIOC_FREEBUFFER,
|
|
(unsigned long)&buf_desc);
|
|
}
|
|
}
|
|
|
|
/* Free the pointers to the buffers */
|
|
|
|
free(recordbufs);
|
|
}
|
|
|
|
/* Unregister the message queue and release the session */
|
|
|
|
ioctl(plooper->playdev_fd,
|
|
AUDIOIOC_UNREGISTERMQ,
|
|
(unsigned long)plooper->mq);
|
|
ioctl(plooper->recorddev_fd,
|
|
AUDIOIOC_UNREGISTERMQ,
|
|
(unsigned long)plooper->mq);
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_RELEASE,
|
|
(unsigned long)plooper->pplayses);
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_RELEASE,
|
|
(unsigned long)plooper->precordses);
|
|
#else
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_RELEASE, 0);
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_RELEASE, 0);
|
|
#endif
|
|
|
|
/* Cleanup */
|
|
|
|
while (sem_wait(&plooper->sem) < 0)
|
|
{
|
|
}
|
|
|
|
close(plooper->playdev_fd); /* Close the play device */
|
|
close(plooper->recorddev_fd); /* Close the record device */
|
|
plooper->playdev_fd = -1; /* Mark play device as closed */
|
|
plooper->recorddev_fd = -1; /* Mark record device as closed */
|
|
mq_close(plooper->mq); /* Close the message queue */
|
|
mq_unlink(plooper->mqname); /* Unlink the message queue */
|
|
plooper->loopstate = NXLOOPER_STATE_IDLE;
|
|
|
|
sem_post(&plooper->sem); /* Release the semaphore */
|
|
|
|
audinfo("Exit\n");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_setvolume
|
|
*
|
|
* nxlooper_setvolume() sets the volume.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
|
|
int nxlooper_setvolume(FAR struct nxlooper_s *plooper, uint16_t volume)
|
|
{
|
|
struct audio_caps_desc_s cap_desc;
|
|
int ret;
|
|
|
|
/* Thread sync using the semaphore */
|
|
|
|
while (sem_wait(&plooper->sem) < 0)
|
|
;
|
|
|
|
/* If we are currently looping, then we need to post a message to
|
|
* the loopthread to perform the volume change operation. If we
|
|
* are not looping, then just store the volume setting and it will
|
|
* be applied before the next loopback begins.
|
|
*/
|
|
|
|
if (plooper->loopstate == NXLOOPER_STATE_LOOPING)
|
|
{
|
|
/* Send a CONFIGURE ioctl to the device to set the volume */
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
cap_desc.session = plooper->pplayses;
|
|
#endif
|
|
cap_desc.caps.ac_len = sizeof(struct audio_caps_s);
|
|
cap_desc.caps.ac_type = AUDIO_TYPE_FEATURE;
|
|
cap_desc.caps.ac_format.hw = AUDIO_FU_VOLUME;
|
|
cap_desc.caps.ac_controls.hw[0] = volume;
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_CONFIGURE,
|
|
(unsigned long)&cap_desc);
|
|
if (ret < 0)
|
|
{
|
|
int errcode = errno;
|
|
DEBUGASSERT(errcode > 0);
|
|
|
|
auderr("ERROR: AUDIOIOC_CONFIGURE ioctl failed: %d\n", errcode);
|
|
sem_post(&plooper->sem);
|
|
return -errcode;
|
|
}
|
|
}
|
|
|
|
/* Store the volume setting */
|
|
|
|
plooper->volume = volume;
|
|
sem_post(&plooper->sem);
|
|
|
|
return OK;
|
|
}
|
|
#endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_pause
|
|
*
|
|
* nxlooper_pause() pauses loopback without cancelling it.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
|
|
int nxlooper_pause(FAR struct nxlooper_s *plooper)
|
|
{
|
|
int ret = OK;
|
|
|
|
if (plooper->loopstate == NXLOOPER_STATE_LOOPING)
|
|
{
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_PAUSE,
|
|
(unsigned long)plooper->pplayses);
|
|
|
|
if (ret == OK)
|
|
{
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_PAUSE,
|
|
(unsigned long)plooper->precordses);
|
|
}
|
|
|
|
#else
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_PAUSE, 0);
|
|
|
|
if (ret == OK)
|
|
{
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_PAUSE, 0);
|
|
}
|
|
|
|
#endif
|
|
if (ret == OK)
|
|
{
|
|
plooper->loopstate = NXLOOPER_STATE_PAUSED;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_resume
|
|
*
|
|
* nxlooper_resume() resumes loopback after a pause operation.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
|
|
int nxlooper_resume(FAR struct nxlooper_s *plooper)
|
|
{
|
|
int ret = OK;
|
|
|
|
if (plooper->loopstate == NXLOOPER_STATE_PAUSED)
|
|
{
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_RESUME,
|
|
(unsigned long)plooper->pplayses);
|
|
|
|
if (ret == OK)
|
|
{
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_RESUME,
|
|
(unsigned long)plooper->precordses);
|
|
}
|
|
|
|
#else
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_RESUME, 0);
|
|
if (ret == OK)
|
|
{
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_RESUME, 0);
|
|
}
|
|
|
|
#endif
|
|
if (ret == OK)
|
|
{
|
|
plooper->loopstate = NXLOOPER_STATE_LOOPING;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_setdevice
|
|
*
|
|
* nxlooper_setdevice() sets the preferred audio device to use with the
|
|
* provided nxlooper context.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NXLOOPER_INCLUDE_PREFERRED_DEVICE
|
|
int nxlooper_setdevice(FAR struct nxlooper_s *plooper,
|
|
FAR const char *pdevice)
|
|
{
|
|
int temp_fd;
|
|
struct audio_caps_s caps;
|
|
|
|
DEBUGASSERT(plooper != NULL);
|
|
DEBUGASSERT(pdevice != NULL);
|
|
|
|
/* Try to open the device */
|
|
|
|
temp_fd = open(pdevice, O_RDWR);
|
|
if (temp_fd == -1)
|
|
{
|
|
/* Error opening the device */
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
/* Validate it's an Audio device by issuing an AUDIOIOC_GETCAPS ioctl */
|
|
|
|
caps.ac_len = sizeof(caps);
|
|
caps.ac_type = AUDIO_TYPE_QUERY;
|
|
caps.ac_subtype = AUDIO_TYPE_QUERY;
|
|
if (ioctl(temp_fd, AUDIOIOC_GETCAPS, (unsigned long)&caps) != caps.ac_len)
|
|
{
|
|
/* Not an Audio device! */
|
|
|
|
close(temp_fd);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Close the file */
|
|
|
|
close(temp_fd);
|
|
|
|
/* Save the path of the preferred device */
|
|
|
|
if (caps.ac_controls.b[0] & AUDIO_TYPE_OUTPUT)
|
|
{
|
|
strncpy(plooper->playdev, pdevice, sizeof(plooper->playdev));
|
|
}
|
|
else if (caps.ac_controls.b[0] & AUDIO_TYPE_INPUT)
|
|
{
|
|
strncpy(plooper->recorddev, pdevice, sizeof(plooper->playdev));
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
#endif /* CONFIG_NXLOOPER_INCLUDE_PREFERRED_DEVICE */
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_stop
|
|
*
|
|
* nxlooper_stop() stops the current playback to loop and closes the
|
|
* file and the associated device.
|
|
*
|
|
* Input:
|
|
* plooper Pointer to the initialized looper context
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
|
|
int nxlooper_stop(FAR struct nxlooper_s *plooper)
|
|
{
|
|
struct audio_msg_s term_msg;
|
|
FAR void *value;
|
|
|
|
DEBUGASSERT(plooper != NULL);
|
|
|
|
/* Validate we are not in IDLE state */
|
|
|
|
sem_wait(&plooper->sem); /* Get the semaphore */
|
|
if (plooper->loopstate == NXLOOPER_STATE_IDLE)
|
|
{
|
|
sem_post(&plooper->sem); /* Release the semaphore */
|
|
return OK;
|
|
}
|
|
|
|
sem_post(&plooper->sem);
|
|
|
|
/* Notify the loopback thread that it needs to cancel the loopback */
|
|
|
|
term_msg.msg_id = AUDIO_MSG_STOP;
|
|
term_msg.u.data = 0;
|
|
mq_send(plooper->mq, (FAR const char *)&term_msg, sizeof(term_msg),
|
|
CONFIG_NXLOOPER_MSG_PRIO);
|
|
|
|
/* Join the thread. The thread will do all the cleanup. */
|
|
|
|
pthread_join(plooper->loop_id, &value);
|
|
plooper->loop_id = 0;
|
|
|
|
return OK;
|
|
}
|
|
#endif /* CONFIG_AUDIO_EXCLUDE_STOP */
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_loopraw
|
|
*
|
|
* nxlooper_loopraw() tries to record and then play the raw data using the
|
|
* Audio system. If a device is specified, it will try to use that
|
|
* device.
|
|
* Input:
|
|
* plooper Pointer to the initialized Looper context
|
|
* nchannels channel num
|
|
* bpsampe bit width
|
|
* samprate sample rate
|
|
* chmap channel map
|
|
*
|
|
* Returns:
|
|
* OK File is being looped
|
|
* -EBUSY The media device is busy
|
|
* -ENOSYS The media file is an unsupported type
|
|
* -ENODEV No audio device suitable
|
|
* -ENOENT The media file was not found
|
|
*
|
|
****************************************************************************/
|
|
|
|
int nxlooper_loopraw(FAR struct nxlooper_s *plooper,
|
|
uint8_t nchannels, uint8_t bpsamp,
|
|
uint32_t samprate, uint8_t chmap)
|
|
{
|
|
struct mq_attr attr;
|
|
struct sched_param sparam;
|
|
pthread_attr_t tattr;
|
|
struct audio_caps_desc_s cap_desc;
|
|
struct ap_buffer_info_s buf_info;
|
|
FAR void *value;
|
|
int ret;
|
|
|
|
DEBUGASSERT(plooper != NULL);
|
|
|
|
if (plooper->loopstate != NXLOOPER_STATE_IDLE)
|
|
{
|
|
return -EBUSY;
|
|
}
|
|
|
|
audinfo("==============================\n");
|
|
audinfo("loopback raw data\n");
|
|
audinfo("==============================\n");
|
|
|
|
/* Try to open the device */
|
|
|
|
ret = nxlooper_opendevice(plooper);
|
|
if (ret < 0)
|
|
{
|
|
/* Error opening the device */
|
|
|
|
auderr("ERROR: nxlooper_opendevice failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Try to reserve record device */
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_RESERVE,
|
|
(unsigned long)&plooper->precordses);
|
|
#else
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_RESERVE, 0);
|
|
#endif
|
|
|
|
if (ret < 0)
|
|
{
|
|
/* Device is busy or error */
|
|
|
|
auderr("ERROR: Failed to reserve record device: %d\n", ret);
|
|
ret = -errno;
|
|
goto err_out_dev;
|
|
}
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_RESERVE,
|
|
(unsigned long)&plooper->pplayses);
|
|
#else
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_RESERVE, 0);
|
|
#endif
|
|
|
|
if (ret < 0)
|
|
{
|
|
/* Device is busy or error */
|
|
|
|
auderr("ERROR: Failed to reserve play device: %d\n", ret);
|
|
ret = -errno;
|
|
goto err_out_record;
|
|
}
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
cap_desc.session = plooper->precordses;
|
|
#endif
|
|
cap_desc.caps.ac_len = sizeof(struct audio_caps_s);
|
|
cap_desc.caps.ac_type = AUDIO_TYPE_INPUT;
|
|
cap_desc.caps.ac_channels = nchannels ? nchannels : 2;
|
|
cap_desc.caps.ac_chmap = chmap ? chmap : 3;
|
|
cap_desc.caps.ac_controls.hw[0] = samprate ? samprate : 48000;
|
|
cap_desc.caps.ac_controls.b[3] = samprate >> 16;
|
|
cap_desc.caps.ac_controls.b[2] = bpsamp ? bpsamp : 16;
|
|
ret = ioctl(plooper->recorddev_fd, AUDIOIOC_CONFIGURE,
|
|
(unsigned long)&cap_desc);
|
|
if (ret < 0)
|
|
{
|
|
ret = -errno;
|
|
goto err_out;
|
|
}
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
cap_desc.session = plooper->pplayses;
|
|
#endif
|
|
cap_desc.caps.ac_type = AUDIO_TYPE_OUTPUT;
|
|
|
|
ret = ioctl(plooper->playdev_fd, AUDIOIOC_CONFIGURE,
|
|
(unsigned long)&cap_desc);
|
|
if (ret < 0)
|
|
{
|
|
ret = -errno;
|
|
goto err_out;
|
|
}
|
|
|
|
/* Query the audio device for its preferred buffer size / qty */
|
|
|
|
if ((ioctl(plooper->playdev_fd, AUDIOIOC_GETBUFFERINFO,
|
|
(unsigned long)&buf_info)) != OK)
|
|
{
|
|
/* Driver doesn't report its buffer size. Use our default. */
|
|
|
|
buf_info.nbuffers = CONFIG_AUDIO_NUM_BUFFERS;
|
|
}
|
|
|
|
/* Create a message queue for the loopthread */
|
|
|
|
attr.mq_maxmsg = buf_info.nbuffers + 8;
|
|
attr.mq_msgsize = sizeof(struct audio_msg_s);
|
|
attr.mq_curmsgs = 0;
|
|
attr.mq_flags = 0;
|
|
|
|
snprintf(plooper->mqname, sizeof(plooper->mqname), "/tmp/%0lx",
|
|
(unsigned long)((uintptr_t)plooper));
|
|
|
|
plooper->mq = mq_open(plooper->mqname, O_RDWR | O_CREAT, 0644, &attr);
|
|
if (plooper->mq == (mqd_t) -1)
|
|
{
|
|
/* Unable to open message queue! */
|
|
|
|
ret = -errno;
|
|
auderr("ERROR: mq_open failed: %d\n", ret);
|
|
goto err_out;
|
|
}
|
|
|
|
/* Register our message queue with the audio device */
|
|
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_REGISTERMQ,
|
|
(unsigned long)plooper->mq);
|
|
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_REGISTERMQ,
|
|
(unsigned long)plooper->mq);
|
|
|
|
/* Check if there was a previous thread and join it if there was
|
|
* to perform clean-up.
|
|
*/
|
|
|
|
if (plooper->loop_id != 0)
|
|
{
|
|
pthread_join(plooper->loop_id, &value);
|
|
}
|
|
|
|
pthread_attr_init(&tattr);
|
|
sparam.sched_priority = sched_get_priority_max(SCHED_FIFO) - 9;
|
|
pthread_attr_setschedparam(&tattr, &sparam);
|
|
pthread_attr_setstacksize(&tattr, CONFIG_NXLOOPER_LOOPTHREAD_STACKSIZE);
|
|
|
|
/* Add a reference count to the looper for the thread and start the
|
|
* thread. We increment for the thread to avoid thread start-up
|
|
* race conditions.
|
|
*/
|
|
|
|
nxlooper_reference(plooper);
|
|
ret = pthread_create(&plooper->loop_id, &tattr, nxlooper_loopthread,
|
|
(pthread_addr_t)plooper);
|
|
pthread_attr_destroy(&tattr);
|
|
if (ret != OK)
|
|
{
|
|
ret = -ret;
|
|
auderr("ERROR: Failed to create loopthread: %d\n", ret);
|
|
goto err_out;
|
|
}
|
|
|
|
/* Name the thread */
|
|
|
|
pthread_setname_np(plooper->loop_id, "loopthread");
|
|
return OK;
|
|
|
|
err_out:
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_RELEASE,
|
|
(unsigned long)plooper->pplayses);
|
|
#else
|
|
ioctl(plooper->playdev_fd, AUDIOIOC_RELEASE, 0);
|
|
#endif
|
|
|
|
err_out_record:
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_RELEASE,
|
|
(unsigned long)plooper->precordses);
|
|
#else
|
|
ioctl(plooper->recorddev_fd, AUDIOIOC_RELEASE, 0);
|
|
#endif
|
|
|
|
err_out_dev:
|
|
|
|
close(plooper->playdev_fd);
|
|
plooper->playdev_fd = -1;
|
|
close(plooper->recorddev_fd);
|
|
plooper->recorddev_fd = -1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_create
|
|
*
|
|
* nxlooper_create() allocates and initializes a nxlooper context for
|
|
* use by further nxlooper operations. This routine must be called before
|
|
* to perform the create for proper reference counting.
|
|
*
|
|
* Input Parameters: None
|
|
*
|
|
* Returned values:
|
|
* Pointer to the created context or NULL if there was an error.
|
|
*
|
|
****************************************************************************/
|
|
|
|
FAR struct nxlooper_s *nxlooper_create(void)
|
|
{
|
|
FAR struct nxlooper_s *plooper;
|
|
|
|
/* Allocate the memory */
|
|
|
|
plooper = (FAR struct nxlooper_s *)malloc(sizeof(struct nxlooper_s));
|
|
if (plooper == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/* Initialize the context data */
|
|
|
|
plooper->loopstate = NXLOOPER_STATE_IDLE;
|
|
plooper->playdev_fd = -1;
|
|
plooper->recorddev_fd = -1;
|
|
#ifdef CONFIG_NXLOOPER_INCLUDE_PREFERRED_DEVICE
|
|
plooper->playdev[0] = '\0';
|
|
plooper->recorddev[0] = '\0';
|
|
#endif
|
|
plooper->mq = 0;
|
|
plooper->loop_id = 0;
|
|
plooper->crefs = 1;
|
|
|
|
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
|
|
plooper->volume = 400;
|
|
#endif
|
|
|
|
#ifdef CONFIG_AUDIO_MULTI_SESSION
|
|
plooper->pplayses = NULL;
|
|
plooper->precordses = NULL;
|
|
#endif
|
|
|
|
sem_init(&plooper->sem, 0, 1);
|
|
|
|
return plooper;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_release
|
|
*
|
|
* nxlooper_release() reduces the reference count by one and if it
|
|
* reaches zero, frees the context.
|
|
*
|
|
* Input Parameters:
|
|
* plooper Pointer to the NxLooper context
|
|
*
|
|
* Returned values: None
|
|
*
|
|
****************************************************************************/
|
|
|
|
void nxlooper_release(FAR struct nxlooper_s *plooper)
|
|
{
|
|
int refcount;
|
|
FAR void *value;
|
|
|
|
/* Grab the semaphore */
|
|
|
|
while (sem_wait(&plooper->sem) < 0)
|
|
{
|
|
int errcode = errno;
|
|
DEBUGASSERT(errcode > 0);
|
|
|
|
if (errcode != EINTR)
|
|
{
|
|
auderr("ERROR: sem_wait failed: %d\n", errcode);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Check if there was a previous thread and join it if there was */
|
|
|
|
if (plooper->loop_id != 0)
|
|
{
|
|
sem_post(&plooper->sem);
|
|
pthread_join(plooper->loop_id, &value);
|
|
plooper->loop_id = 0;
|
|
|
|
while (sem_wait(&plooper->sem) < 0)
|
|
{
|
|
int errcode = errno;
|
|
DEBUGASSERT(errcode > 0);
|
|
|
|
if (errcode != EINTR)
|
|
{
|
|
auderr("ERROR: sem_wait failed: %d\n", errcode);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Reduce the reference count */
|
|
|
|
refcount = plooper->crefs--;
|
|
sem_post(&plooper->sem);
|
|
|
|
/* If the ref count *was* one, then free the context */
|
|
|
|
if (refcount == 1)
|
|
{
|
|
free(plooper);
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_reference
|
|
*
|
|
* nxlooper_reference() increments the reference count by one.
|
|
*
|
|
* Input Parameters:
|
|
* plooper Pointer to the NxLooper context
|
|
*
|
|
* Returned values: None
|
|
*
|
|
****************************************************************************/
|
|
|
|
void nxlooper_reference(FAR struct nxlooper_s *plooper)
|
|
{
|
|
/* Grab the semaphore */
|
|
|
|
while (sem_wait(&plooper->sem) < 0)
|
|
{
|
|
int errcode = errno;
|
|
DEBUGASSERT(errcode > 0);
|
|
|
|
if (errcode != EINTR)
|
|
{
|
|
auderr("ERROR: sem_wait failed: %d\n", errcode);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Increment the reference count */
|
|
|
|
plooper->crefs++;
|
|
sem_post(&plooper->sem);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: nxlooper_systemreset
|
|
*
|
|
* nxlooper_systemreset() performs a HW reset on all registered
|
|
* audio devices.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_NXLOOPER_INCLUDE_SYSTEM_RESET
|
|
int nxlooper_systemreset(FAR struct nxlooper_s *plooper)
|
|
{
|
|
struct audio_caps_s caps;
|
|
FAR struct dirent *pdevice;
|
|
FAR DIR *dirp;
|
|
char path[64];
|
|
int temp_fd;
|
|
|
|
/* Search for a device in the audio device directory */
|
|
|
|
#ifdef CONFIG_AUDIO_CUSTOM_DEV_PATH
|
|
#ifdef CONFIG_AUDIO_DEV_ROOT
|
|
dirp = opendir("/dev");
|
|
#else
|
|
dirp = opendir(CONFIG_AUDIO_DEV_PATH);
|
|
#endif
|
|
#else
|
|
dirp = opendir("/dev/audio");
|
|
#endif
|
|
if (dirp == NULL)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
caps.ac_len = sizeof(caps);
|
|
caps.ac_type = AUDIO_TYPE_QUERY;
|
|
caps.ac_subtype = AUDIO_TYPE_QUERY;
|
|
|
|
while ((pdevice = readdir(dirp)) != NULL)
|
|
{
|
|
/* We found the next device. Try to open it and
|
|
* get its audio capabilities.
|
|
*/
|
|
|
|
#ifdef CONFIG_AUDIO_CUSTOM_DEV_PATH
|
|
#ifdef CONFIG_AUDIO_DEV_ROOT
|
|
snprintf(path, sizeof(path), "/dev/%s", pdevice->d_name);
|
|
#else
|
|
snprintf(path, sizeof(path), CONFIG_AUDIO_DEV_PATH "/%s",
|
|
pdevice->d_name);
|
|
#endif
|
|
#else
|
|
snprintf(path, sizeof(path), "/dev/audio/%s", pdevice->d_name);
|
|
#endif
|
|
if ((temp_fd = open(path, O_RDWR)) != -1)
|
|
{
|
|
/* Validate it's an Audio device by issuing an
|
|
* AUDIOIOC_GETCAPS ioctl
|
|
*/
|
|
|
|
if (ioctl(temp_fd, AUDIOIOC_GETCAPS, (unsigned long)&caps) ==
|
|
caps.ac_len)
|
|
{
|
|
/* We have the device file open. Now issue an
|
|
* AUDIO ioctls to perform a HW reset
|
|
*/
|
|
|
|
ioctl(temp_fd, AUDIOIOC_HWRESET, 0);
|
|
}
|
|
|
|
/* Now close the device */
|
|
|
|
close(temp_fd);
|
|
}
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
#endif /* CONFIG_NXLOOPER_INCLUDE_SYSTEM_RESET */
|