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nuttx-apps/system/nxplayer/nxplayer.c

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/****************************************************************************
* apps/system/nxplayer/nxplayer.c
*
* Developed by:
*
* Copyright (C) 2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@gmail.com>
*
* With ongoing support:
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Greory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <dirent.h>
#include <debug.h>
#include <nuttx/audio/audio.h>
#include <apps/nxplayer.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define NXPLAYER_STATE_IDLE 0
#define NXPLAYER_STATE_PLAYING 1
#define NXPLAYER_STATE_PAUSED 2
#ifndef CONFIG_AUDIO_NUM_BUFFERS
# define CONFIG_AUDIO_NUM_BUFFERS 2
#endif
#ifndef CONFIG_AUDIO_BUFFER_NUMBYTES
# define CONFIG_AUDIO_BUFFER_NUMBYTES 8192
#endif
#ifndef CONFIG_NXPLAYER_MSG_PRIO
# define CONFIG_NXPLAYER_MSG_PRIO 1
#endif
#ifndef CONFIG_NXPLAYER_PLAYTHREAD_STACKSIZE
# define CONFIG_NXPLAYER_PLAYTHREAD_STACKSIZE 1500
#endif
/****************************************************************************
* Private Type Declarations
****************************************************************************/
#ifdef CONFIG_NXPLAYER_FMT_FROM_EXT
struct nxplayer_ext_fmt_s
{
const char *ext;
uint16_t format;
CODE int (*getsubformat)(FAR FILE *fd);
};
#endif
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#ifdef CONFIG_AUDIO_FORMAT_MIDI
int nxplayer_getmidisubformat(FAR FILE *fd);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_NXPLAYER_FMT_FROM_EXT
static const struct nxplayer_ext_fmt_s g_known_ext[] = {
#ifdef CONFIG_AUDIO_FORMAT_AC3
{ "ac3", AUDIO_FMT_AC3, NULL },
#endif
#ifdef CONFIG_AUDIO_FORMAT_MP3
{ "mp3", AUDIO_FMT_MP3, NULL },
#endif
#ifdef CONFIG_AUDIO_FORMAT_DTS
{ "dts", AUDIO_FMT_DTS, NULL },
#endif
#ifdef CONFIG_AUDIO_FORMAT_WMA
{ "wma", AUDIO_FMT_WMA, NULL },
#endif
#ifdef CONFIG_AUDIO_FORMAT_PCM
{ "wav", AUDIO_FMT_PCM, NULL },
#endif
#ifdef CONFIG_AUDIO_FORMAT_MIDI
{ "mid", AUDIO_FMT_MIDI, nxplayer_getmidisubformat },
{ "midi", AUDIO_FMT_MIDI, nxplayer_getmidisubformat },
#endif
#ifdef CONFIG_AUDIO_FORMAT_OGG_VORBIS
{ "ogg", AUDIO_FMT_OGG_VORBIS, NULL }
#endif
};
static const int g_known_ext_count = sizeof(g_known_ext) /
sizeof(struct nxplayer_ext_fmt_s);
#endif /* CONFIG_NXPLAYER_FMT_FROM_EXT */
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxplayer_opendevice
*
* nxplayer_opendevice() either searches the Audio system for a device
* that is compatible with the specified audio format and opens it, or
* tries to open the prefered device if specified and validates that
* it supports the requested format.
*
* Return:
* OK if compatible device opened (searched or preferred)
* -ENODEV if no compatible device opened.
* -ENOENT if preferred device couldn't be opened.
*
****************************************************************************/
static int nxplayer_opendevice(FAR struct nxplayer_s *pPlayer, int format,
int subfmt)
{
/* If we have a preferred device, then open it */
#ifdef CONFIG_NXPLAYER_INCLUDE_PREFERRED_DEVICE
if (pPlayer->prefdevice[0] != '\0')
{
/* Use the saved prefformat to test if the requested
* format is specified by the device
*/
if ((pPlayer->prefformat & (1 << (format - 1))) == 0 ||
(pPlayer->preftype & AUDIO_TYPE_OUTPUT) == 0)
{
/* Format not supported by the device */
auddbg("ERROR: Format not supported by device: %d\n", format);
return -ENODEV;
}
/* Device supports the format. Open the device file. */
pPlayer->devFd = open(pPlayer->prefdevice, O_RDWR);
if (pPlayer->devFd == -1)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
auddbg("ERROR: Failed to open %s: %d\n", -errcode);
UNUSED(errcode);
return -ENOENT;
}
return OK;
}
#endif
#if defined(CONFIG_NXPLAYER_INCLUDE_PREFERRED_DEVICE) && \
defined(CONFIG_NXPLAYER_INCLUDE_DEVICE_SEARCH)
else
#endif
#ifdef CONFIG_NXPLAYER_INCLUDE_DEVICE_SEARCH
{
struct audio_caps_s caps;
FAR struct dirent *pDevice;
FAR DIR *dirp;
char path[64];
uint8_t supported = true;
uint8_t x;
/* 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 /* CONFIG_AUDIO_DEV_ROOT */
#else
dirp = opendir("/dev/audio");
#endif /* CONFIG_AUDIO_CUSTOM_DEV_PATH */
if (dirp == NULL)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
auddbg("ERROR: Failed to open /dev/audio: %d\n", -errcode);
UNUSED(errcode);
return -ENODEV;
}
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 /* CONFIG_AUDIO_DEV_ROOT */
#else
snprintf(path, sizeof(path), "/dev/audio/%s", pDevice->d_name);
#endif /* CONFIG_AUDIO_CUSTOM_DEV_PATH */
if ((pPlayer->devFd = open(path, O_RDWR)) != -1)
{
/* We have the device file open. Now issue an AUDIO ioctls to
* get the capabilities
*/
caps.ac_len = sizeof(caps);
caps.ac_type = AUDIO_TYPE_QUERY;
caps.ac_subtype = AUDIO_TYPE_QUERY;
if (ioctl(pPlayer->devFd, AUDIOIOC_GETCAPS, (unsigned long) &caps)
== caps.ac_len)
{
/* Test if this device supports the format we want */
if (((caps.ac_format.hw & (1 << (format - 1))) != 0) &&
(caps.ac_controls.b[0] & AUDIO_TYPE_OUTPUT))
{
/* Do subformat detection */
if (subfmt != AUDIO_FMT_UNDEF)
{
/* Prepare to get sub-formats for this main format */
caps.ac_subtype = format;
caps.ac_format.b[0] = 0;
while (ioctl(pPlayer->devFd, AUDIOIOC_GETCAPS,
(unsigned long) &caps) == caps.ac_len)
{
/* Check the next set of 4 controls to find the subformat */
for (x = 0; x < sizeof(caps.ac_controls); x++)
{
if (caps.ac_controls.b[x] == subfmt)
{
/* Sub format supported! */
break;
}
else if (caps.ac_controls.b[x] == AUDIO_SUBFMT_END)
{
/* Sub format not supported */
supported = false;
break;
}
}
/* If we reached the end of the subformat list, then
* break out of the loop.
*/
if (x != sizeof(caps.ac_controls))
{
break;
}
/* Increment ac_format.b[0] to get next set of subformats */
caps.ac_format.b[0]++;
}
}
/* Test if subformat needed and detected */
if (supported)
{
/* Yes, it supports this format. Use this device */
closedir(dirp);
return OK;
}
}
}
/* Not this device! */
close(pPlayer->devFd);
}
}
/* Close the directory */
closedir(dirp);
}
#endif /* CONFIG_NXPLAYER_INCLUDE_DEVICE_SEARCH */
/* Device not found */
auddbg("ERROR: Device not found\n");
pPlayer->devFd = -1;
return -ENODEV;
}
/****************************************************************************
* Name: nxplayer_getmidisubformat
*
* nxplayer_getmidisubformat() reads the MIDI header and determins the
* MIDI format of the file.
*
****************************************************************************/
#ifdef CONFIG_AUDIO_FORMAT_MIDI
int nxplayer_getmidisubformat(FAR FILE *fd)
{
char type[2];
int ret;
/* Seek to location 8 in the file (the format type) */
fseek(fd, 8, SEEK_SET);
fread(type, 1, 2, fd);
/* Set return value based on type */
switch (type[1])
{
case 0:
ret = AUDIO_SUBFMT_MIDI_0;
break;
case 1:
ret = AUDIO_SUBFMT_MIDI_1;
break;
case 2:
ret = AUDIO_SUBFMT_MIDI_2;
break;
}
fseek(fd, 0, SEEK_SET);
return ret;
}
#endif
/****************************************************************************
* Name: nxplayer_fmtfromextension
*
* nxplayer_fmtfromextension() tries to determine the file format based
* on the extension of the supplied filename.
*
****************************************************************************/
#ifdef CONFIG_NXPLAYER_FMT_FROM_EXT
static inline int nxplayer_fmtfromextension(FAR struct nxplayer_s *pPlayer,
FAR const char *pFilename,
FAR int *subfmt)
{
const char *pExt;
uint8_t x;
uint8_t c;
/* Find the file extension, if any */
x = strlen(pFilename) - 1;
while (x > 0)
{
/* Seach backward for the first '.' */
if (pFilename[x] == '.')
{
/* First '.' found. Now compare with known extensions */
pExt = &pFilename[x+1];
for (c = 0; c < g_known_ext_count; c++)
{
/* Test for extension match */
if (strcasecmp(pExt, g_known_ext[c].ext) == 0)
{
/* Test if we have a sub-format detection routine */
if (subfmt && g_known_ext[c].getsubformat)
{
*subfmt = g_known_ext[c].getsubformat(pPlayer->fileFd);
}
/* Return the format for this extension */
return g_known_ext[c].format;
}
}
}
/* Stop if we find a '/' */
if (pFilename[x] == '/')
{
break;
}
x--;
}
return AUDIO_FMT_UNDEF;
}
#endif /* CONFIG_NXPLAYER_FMT_FROM_EXT */
/****************************************************************************
* Name: nxplayer_fmtfromheader
*
* nxplayer_fmtfromheader() tries to determine the file format by checking
* the file header for known file types.
*
****************************************************************************/
#ifdef CONFIG_NXPLAYER_FMT_FROM_HEADER
static int nxplayer_fmtfromheader(FAR struct nxplayer_s *pPlayer)
{
return AUDIO_FMT_UNDEF;
}
#endif /* CONFIG_NXPLAYER_FMT_FROM_HEADER */
/****************************************************************************
* Name: nxplayer_mediasearch
*
* nxplayer_mediasearch() searches the subdirectories in the mediadir
* for the specified media file. We borrow the caller's path stack
* variable (playfile) to conserve stack space.
*
****************************************************************************/
#if defined(CONFIG_NXPLAYER_MEDIA_SEARCH) && defined(CONFIG_NXPLAYER_INCLUDE_MEDIADIR)
static int nxplayer_mediasearch(FAR struct nxplayer_s *pPlayer,
FAR const char *pFilename,
FAR const char *path, int pathmax)
{
return -ENOENT;
}
#endif
/****************************************************************************
* Name: nxplayer_readbuffer
*
* Read the next block of data from the media file into the specified
* buffer.
*
****************************************************************************/
static int nxplayer_readbuffer(FAR struct nxplayer_s *pPlayer,
FAR struct ap_buffer_s* apb)
{
/* Validate the file is still open. It will be closed automatically when
* we encounter the end of file (or, perhaps, a read error that we cannot
* handle.
*/
if (pPlayer->fileFd == NULL)
{
/* Return -ENODATA to indicate that there is nothing more to read from
* the file.
*/
return -ENODATA;
}
/* Read data into the buffer. */
apb->nbytes = fread(&apb->samp, 1, apb->nmaxbytes, pPlayer->fileFd);
apb->curbyte = 0;
apb->flags = 0;
if (apb->nbytes < apb->nmaxbytes)
{
#ifdef CONFIG_DEBUG
int errcode = errno;
int readerror = ferror(pPlayer->fileFd);
audvdbg("Closing audio file, nbytes=%d readerr=%d\n",
apb->nbytes, readerror);
#endif
/* End of file or read error.. We are finished with this file in any
* event.
*/
fclose(pPlayer->fileFd);
pPlayer->fileFd = NULL;
/* Set a flag to indicate that this is the final buffer in the stream */
apb->flags |= AUDIO_APB_FINAL;
#ifdef CONFIG_DEBUG
/* Was this a file read error */
if (apb->nbytes == 0 && readerror)
{
DEBUGASSERT(errcode > 0);
auddbg("ERROR: fread failed: %d\n", errcode);
}
#endif
}
/* Return OK to indicate that the buffer should be passed through to the
* audio device. This does not necessarily indicate that data was read
* correctly.
*/
return OK;
}
/****************************************************************************
* Name: nxplayer_enqueuebuffer
*
* Description:
* Enqueue the audio buffer in the downstream device. Normally we are
* called with a buffer of data to be enqueued in the audio stream.
*
* Be we may also receive an empty length buffer (with only the
* AUDIO_APB_FINAL set) in the event of certin read error occurs or in the
* event that the file was an exact multiple of the nmaxbytes size of the
* audio buffer. In that latter case, we have an end of file with no bytes
* read.
*
* These infrequent zero length buffers have to be passed through because
* the include the AUDIO_APB_FINAL flag that is needed to terminate the
* audio stream.
*
****************************************************************************/
static int nxplayer_enqueuebuffer(FAR struct nxplayer_s *pPlayer,
FAR struct ap_buffer_s* apb)
{
struct audio_buf_desc_s bufdesc;
int ret;
/* Now enqueue the buffer with the audio device. If the number of
* bytes in the file happens to be an exact multiple of the audio
* buffer size, then we will receive the last buffer size = 0. We
* encode this buffer also so the audio system knows its the end of
* the file and can do proper clean-up.
*/
#ifdef CONFIG_AUDIO_MULTI_SESSION
bufdesc.session = pPlayer->session;
#endif
bufdesc.numbytes = apb->nbytes;
bufdesc.u.pBuffer = apb;
ret = ioctl(pPlayer->devFd, AUDIOIOC_ENQUEUEBUFFER,
(unsigned long)&bufdesc);
if (ret < 0)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
auddbg("ERROR: AUDIOIOC_ENQUEUEBUFFER ioctl failed: %d\n", errcode);
return -errcode;
}
/* Return OK to indicate that we successfully read data from the file
* (and we are not yet at the end of file)
*/
return OK;
}
/****************************************************************************
* Name: nxplayer_thread_playthread
*
* This is the thread that reads the audio file file and enqueues /
* dequeues buffers to the selected and opened audio device.
*
****************************************************************************/
static void *nxplayer_playthread(pthread_addr_t pvarg)
{
struct nxplayer_s *pPlayer = (struct nxplayer_s *) pvarg;
struct audio_msg_s msg;
struct audio_buf_desc_s buf_desc;
ssize_t size;
bool running = true;
bool streaming = true;
bool failed = false;
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
struct ap_buffer_info_s buf_info;
FAR struct ap_buffer_s** pBuffers;
#else
FAR struct ap_buffer_s* pBuffers[CONFIG_AUDIO_NUM_BUFFERS];
#endif
#ifdef CONFIG_DEBUG
int outstanding = 0;
#endif
int prio;
int x;
int ret;
audvdbg("Entry\n");
/* Query the audio device for it's preferred buffer size / qty */
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
if ((ret = ioctl(pPlayer->devFd, AUDIOIOC_GETBUFFERINFO,
(unsigned long) &buf_info)) != OK)
{
/* Driver doesn't report it's buffer size. Use our default. */
buf_info.buffer_size = CONFIG_AUDIO_BUFFER_NUMBYTES;
buf_info.nbuffers = CONFIG_AUDIO_NUM_BUFFERS;
}
/* Create array of pointers to buffers */
pBuffers = (FAR struct ap_buffer_s **) malloc(buf_info.nbuffers * sizeof(FAR void *));
if (pBuffers == NULL)
{
/* Error allocating memory for buffer storage! */
ret = -ENOMEM;
running = false;
goto err_out;
}
/* Create our audio pipeline buffers to use for queueing up data */
for (x = 0; x < buf_info.nbuffers; x++)
{
pBuffers[x] = NULL;
}
for (x = 0; x < buf_info.nbuffers; x++)
#else /* CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFER */
for (x = 0; x < CONFIG_AUDIO_NUM_BUFFERS; x++)
{
pBuffers[x] = NULL;
}
for (x = 0; x < CONFIG_AUDIO_NUM_BUFFERS; x++)
#endif /* CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFER */
{
/* Fill in the buffer descriptor struct to issue an alloc request */
#ifdef CONFIG_AUDIO_MULTI_SESSION
buf_desc.session = pPlayer->session;
#endif
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
buf_desc.numbytes = buf_info.buffer_size;
#else
buf_desc.numbytes = CONFIG_AUDIO_BUFFER_NUMBYTES;
#endif
buf_desc.u.ppBuffer = &pBuffers[x];
ret = ioctl(pPlayer->devFd, AUDIOIOC_ALLOCBUFFER,
(unsigned long) &buf_desc);
if (ret != sizeof(buf_desc))
{
/* Buffer alloc Operation not supported or error allocating! */
auddbg("ERROR: Could not allocate buffer %d\n", x);
running = false;
goto err_out;
}
}
/* Fill up the pipeline with enqueued buffers */
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
for (x = 0; x < buf_info.nbuffers; x++)
#else
for (x = 0; x < CONFIG_AUDIO_NUM_BUFFERS; x++)
#endif
{
/* Read the next buffer of data */
ret = nxplayer_readbuffer(pPlayer, pBuffers[x]);
if (ret != OK)
{
/* nxplayer_readbuffer will return an error if there is no further
* data to be read from the file. This can happen normally if the
* file is very small (less than will fit in
* CONFIG_AUDIO_NUM_BUFFERS) or if an error occurs trying to read
* from the file.
*/
/* We are no longer streaming data from the file */
streaming = false;
if (x == 0)
{
/* No buffers read? Should never really happen. Even in the
* case of a read failure, one empty buffer containing the
* AUDIO_APB_FINAL indication will be returned.
*/
running = false;
}
}
/* Enqueue buffer by sending it to the audio driver */
else
{
ret = nxplayer_enqueuebuffer(pPlayer, pBuffers[x]);
if (ret != OK)
{
/* Failed to enqueue the buffer. The driver is not happy with
* the buffer. Perhaps a decoder has detected something that it
* does not like in the stream and has stopped streaming. This
* would happen normally if we send a file in the incorrect format
* to an audio decoder.
*
* We must stop streaming as gracefully as possible. Close the
* file so that no further data is read.
*/
fclose(pPlayer->fileFd);
pPlayer->fileFd = NULL;
/* We are no longer streaming data from the file. Be we will
* need to wait for any outstanding buffers to be recovered. We
* also still expect the audio driver to send a AUDIO_MSG_COMPLETE
* message after all queued buffers have been returned.
*/
streaming = false;
failed = true;
break;
}
#ifdef CONFIG_DEBUG
else
{
/* The audio driver has one more buffer */
outstanding++;
}
#endif
}
}
audvdbg("%d buffers queued, running=%d streaming=%d\n",
x, running, streaming);
/* Start the audio device */
if (running && !failed)
{
#ifdef CONFIG_AUDIO_MULTI_SESSION
ret = ioctl(pPlayer->devFd, AUDIOIOC_START,
(unsigned long) pPlayer->session);
#else
ret = ioctl(pPlayer->devFd, AUDIOIOC_START, 0);
#endif
if (ret < 0)
{
/* Error starting the audio stream! We need to continue running
* in order to recover the audio buffers that have already been
* queued.
*/
failed = true;
}
}
if (running && !failed)
{
/* Indicate we are playing a file */
pPlayer->state = NXPLAYER_STATE_PLAYING;
/* Set initial parameters such as volume, bass, etc.
* REVISIT: Shouldn't this actually be done BEFORE we start playing?
*/
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
(void)nxplayer_setvolume(pPlayer, pPlayer->volume);
#endif
#ifndef CONFIG_AUDIO_EXCLUDE_BALANCE
nxplayer_setbalance(pPlayer, pPlayer->balance);
#endif
#ifndef CONFIG_AUDIO_EXCLUDE_TONE
nxplayer_setbass(pPlayer, pPlayer->bass);
nxplayer_settreble(pPlayer, pPlayer->treble);
#endif
}
/* Loop until we specifically break. running == true means that we are
* still looping waiting for the playback to complete. All of the file
* data may have been sent (if streaming == false), but the playback is
* not complete until we get the AUDIO_MSG_COMPLETE (or AUDIO_MSG_STOP)
* message
*
* The normal protocol for streaming 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, and
* (3) Terminate playing by sending the AUDIO_MSG_COMPLETE message.
*/
audvdbg("%s\n", running ? "Playing..." : "Not runnning");
while (running)
{
/* Wait for a signal either from the Audio driver that it needs
* additional buffer data, or from a user-space signal to pause,
* stop, etc.
*/
size = mq_receive(pPlayer->mq, &msg, sizeof(msg), &prio);
/* Validate a message was received */
if (size != sizeof(msg))
{
/* Interrupted by a signal? What to do? */
continue;
}
/* Perform operation based on message id */
switch (msg.msgId)
{
/* An audio buffer is being dequeued by the driver */
case AUDIO_MSG_DEQUEUE:
#ifdef CONFIG_DEBUG
/* Make sure that we believe that the audio driver has at
* least one buffer.
*/
DEBUGASSERT(msg.u.pPtr && outstanding > 0);
outstanding--;
#endif
/* Read data from the file directly into this buffer and
* re-enqueue it. streaming == true means that we have
* not yet hit the end-of-file.
*/
if (streaming)
{
/* Read the next buffer of data */
ret = nxplayer_readbuffer(pPlayer, msg.u.pPtr);
if (ret != OK)
{
/* Out of data. Stay in the loop until the device sends
* us a COMPLETE message, but stop trying to play more
* data.
*/
streaming = false;
}
/* Enqueue buffer by sending it to the audio driver */
else
{
ret = nxplayer_enqueuebuffer(pPlayer, msg.u.pPtr);
if (ret != OK)
{
/* There is some issue from the audio driver.
* Perhaps a problem in the file format?
*
* We must stop streaming as gracefully as possible.
* Close the file so that no further data is read.
*/
fclose(pPlayer->fileFd);
pPlayer->fileFd = NULL;
/* Stop streaming and wait for buffers to be
* returned and to receive the AUDIO_MSG_COMPLETE
* indication.
*/
streaming = false;
failed = true;
}
#ifdef CONFIG_DEBUG
else
{
/* The audio driver has one more buffer */
outstanding++;
}
#endif
}
}
break;
/* Someone wants to stop the playback. */
case AUDIO_MSG_STOP:
/* Send a stop message to the device */
audvdbg("Stopping! outstanding=%d\n", outstanding);
#ifdef CONFIG_AUDIO_MULTI_SESSION
ioctl(pPlayer->devFd, AUDIOIOC_STOP,
(unsigned long) pPlayer->session);
#else
ioctl(pPlayer->devFd, AUDIOIOC_STOP, 0);
#endif
/* Stay in the running loop (without sending more data).
* we will need to recover our audio buffers. We will
* loop until AUDIO_MSG_COMPLETE is received.
*/
streaming = false;
break;
/* Message indicating the playback is complete */
case AUDIO_MSG_COMPLETE:
audvdbg("Play complete. outstanding=%d\n", outstanding);
DEBUGASSERT(outstanding == 0);
running = false;
break;
/* Unknown / unsupported message ID */
default:
break;
}
}
/* Release our audio buffers and unregister / release the device */
err_out:
audvdbg("Clean-up and exit\n");
/* Unregister the message queue and release the session */
ioctl(pPlayer->devFd, AUDIOIOC_UNREGISTERMQ, (unsigned long) pPlayer->mq);
#ifdef CONFIG_AUDIO_MULTI_SESSION
ioctl(pPlayer->devFd, AUDIOIOC_RELEASE, (unsigned long) pPlayer->session);
#else
ioctl(pPlayer->devFd, AUDIOIOC_RELEASE, 0);
#endif
/* Cleanup */
while (sem_wait(&pPlayer->sem) != OK)
;
#ifdef CONFIG_AUDIO_DRIVER_SPECIFIC_BUFFERS
if (pBuffers != NULL)
{
audvdbg("Freeing buffers\n");
for (x = 0; x < buf_info.nbuffers; x++)
{
/* Fill in the buffer descriptor struct to issue a free request */
if (pBuffers[x] != NULL)
{
buf_desc.u.pBuffer = pBuffers[x];
ioctl(pPlayer->devFd, AUDIOIOC_FREEBUFFER, (unsigned long) &buf_desc);
}
}
/* Free the pointers to the buffers */
free(pBuffers);
}
#else
audvdbg("Freeing buffers\n");
for (x = 0; x < CONFIG_AUDIO_NUM_BUFFERS; x++)
{
/* Fill in the buffer descriptor struct to issue a free request */
if (pBuffers[x] != NULL)
{
buf_desc.u.pBuffer = pBuffers[x];
ioctl(pPlayer->devFd, AUDIOIOC_FREEBUFFER, (unsigned long) &buf_desc);
}
}
#endif
/* Close the files */
if (pPlayer->fileFd != NULL)
{
fclose(pPlayer->fileFd); /* Close the file */
pPlayer->fileFd = NULL; /* Clear out the FD */
}
close(pPlayer->devFd); /* Close the device */
pPlayer->devFd = -1; /* Mark device as closed */
mq_close(pPlayer->mq); /* Close the message queue */
mq_unlink(pPlayer->mqname); /* Unlink the message queue */
pPlayer->state = NXPLAYER_STATE_IDLE; /* Go to IDLE */
sem_post(&pPlayer->sem); /* Release the semaphore */
/* The playthread is done with the context. Release it, which may
* actually cause the context to be freed if the creator has already
* abandoned (released) the context too.
*/
nxplayer_release(pPlayer);
audvdbg("Exit\n");
return NULL;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxplayer_setvolume
*
* nxplayer_setvolume() sets the volume.
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
int nxplayer_setvolume(FAR struct nxplayer_s *pPlayer, uint16_t volume)
{
struct audio_caps_desc_s cap_desc;
int ret;
/* Thread sync using the semaphore */
while (sem_wait(&pPlayer->sem) != OK)
;
/* If we are currently playing, then we need to post a message to
* the playthread to perform the volume change operation. If we
* are not playing, then just store the volume setting and it will
* be applied before the next playback begins.
*/
if (pPlayer->state == NXPLAYER_STATE_PLAYING)
{
/* Send a CONFIGURE ioctl to the device to set the volume */
#ifdef CONFIG_AUDIO_MULTI_SESSION
cap_desc.session= pPlayer->session;
#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(pPlayer->devFd, AUDIOIOC_CONFIGURE, (unsigned long) &cap_desc);
if (ret < 0)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
auddbg("ERROR: AUDIOIOC_CONFIGURE ioctl failed: %d\n", errcode);
return -errcode;
}
}
/* Store the volume setting */
pPlayer->volume = volume;
sem_post(&pPlayer->sem);
return OK;
}
#endif /* CONFIG_AUDIO_EXCLUDE_VOLUME */
/****************************************************************************
* Name: nxplayer_setequalization
*
* Sets the level on each band of an equalizer. Each band setting is
* represented in one percent increments, so the range is 0-100.
*
* Input Parameters:
* pPlayer - Pointer to the context to initialize
* equalization - Pointer to array of equalizer settings of size
* CONFIG_AUDIO_EQUALIZER_NBANDS bytes. Each byte
* represents the setting for one band in the range of
* 0-100.
*
* Returned Value:
* OK if equalization was set correctly.
*
**************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_EQUALIZER
int nxplayer_setequalization(FAR struct nxplayer_s *pPlayer,
FAR uint8_t *equalization)
{
#warning Missing logic
return -ENOSYS;
}
#endif
/****************************************************************************
* Name: nxplayer_setbass
*
* nxplayer_setbass() sets the bass level and range.
*
* Input:
* pPlayer - Pointer to the nxplayer context
* level - Bass level in percentage (0-100)
* range - Bass range in percentage (0-100)
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_TONE
int nxplayer_setbass(FAR struct nxplayer_s *pPlayer, uint8_t level)
{
struct audio_caps_desc_s cap_desc;
/* Thread sync using the semaphore */
while (sem_wait(&pPlayer->sem) != OK)
;
/* If we are currently playing, then we need to post a message to
* the playthread to perform the volume change operation. If we
* are not playing, then just store the bass setting and it will
* be applied before the next playback begins.
*/
if (pPlayer->state == NXPLAYER_STATE_PLAYING)
{
/* Send a CONFIGURE ioctl to the device to set the volume */
#ifdef CONFIG_AUDIO_MULTI_SESSION
cap_desc.session= pPlayer->session;
#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_BASS;
cap_desc.caps.ac_controls.b[0] = level;
ioctl(pPlayer->devFd, AUDIOIOC_CONFIGURE, (unsigned long) &cap_desc);
}
/* Store the volume setting */
pPlayer->bass = level;
sem_post(&pPlayer->sem);
return -ENOENT;
}
#endif /* CONFIG_AUDIO_EXCLUDE_TONE */
/****************************************************************************
* Name: nxplayer_settreble
*
* nxplayer_settreble() sets the treble level and range.
*
* Input:
* pPlayer - Pointer to the nxplayer context
* level - Treble level in percentage (0-100)
* range - Treble range in percentage (0-100)
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_TONE
int nxplayer_settreble(FAR struct nxplayer_s *pPlayer, uint8_t level)
{
struct audio_caps_desc_s cap_desc;
/* Thread sync using the semaphore */
while (sem_wait(&pPlayer->sem) != OK)
;
/* If we are currently playing, then we need to post a message to
* the playthread to perform the volume change operation. If we
* are not playing, then just store the treble setting and it will
* be applied before the next playback begins.
*/
if (pPlayer->state == NXPLAYER_STATE_PLAYING)
{
/* Send a CONFIGURE ioctl to the device to set the volume */
#ifdef CONFIG_AUDIO_MULTI_SESSION
cap_desc.session= pPlayer->session;
#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_TREBLE;
cap_desc.caps.ac_controls.b[0] = level;
ioctl(pPlayer->devFd, AUDIOIOC_CONFIGURE, (unsigned long) &cap_desc);
}
/* Store the volume setting */
pPlayer->treble = level;
sem_post(&pPlayer->sem);
return -ENOENT;
}
#endif /* CONFIG_AUDIO_EXCLUDE_TONE */
/****************************************************************************
* Name: nxplayer_setbalance
*
* nxplayer_setbalance() sets the volume.
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_BALANCE
int nxplayer_setbalance(FAR struct nxplayer_s *pPlayer, uint16_t balance)
{
struct audio_caps_desc_s cap_desc;
/* Thread sync using the semaphore */
while (sem_wait(&pPlayer->sem) != OK)
;
/* If we are currently playing, then we need to post a message to
* the playthread to perform the volume change operation. If we
* are not playing, then just store the volume setting and it will
* be applied before the next playback begins.
*/
if (pPlayer->state == NXPLAYER_STATE_PLAYING)
{
/* Send a CONFIGURE ioctl to the device to set the volume */
#ifdef CONFIG_AUDIO_MULTI_SESSION
cap_desc.session = pPlayer->session;
#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_BALANCE;
cap_desc.caps.ac_controls.hw[0] = balance;
ioctl(pPlayer->devFd, AUDIOIOC_CONFIGURE, (unsigned long) &cap_desc);
}
/* Store the volume setting */
pPlayer->balance = balance;
sem_post(&pPlayer->sem);
return -ENOENT;
}
#endif
/****************************************************************************
* Name: nxplayer_pause
*
* nxplayer_pause() pauses playback without cancelling it.
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
int nxplayer_pause(FAR struct nxplayer_s *pPlayer)
{
int ret = OK;
if (pPlayer->state == NXPLAYER_STATE_PLAYING)
{
#ifdef CONFIG_AUDIO_MULTI_SESSION
ret = ioctl(pPlayer->devFd, AUDIOIOC_PAUSE,
(unsigned long) pPlayer->session);
#else
ret = ioctl(pPlayer->devFd, AUDIOIOC_PAUSE, 0);
#endif
if (ret == OK)
{
pPlayer->state = NXPLAYER_STATE_PAUSED;
}
}
return ret;
}
#endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */
/****************************************************************************
* Name: nxplayer_resume
*
* nxplayer_resume() resumes playback after a pause operation.
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
int nxplayer_resume(FAR struct nxplayer_s *pPlayer)
{
int ret = OK;
if (pPlayer->state == NXPLAYER_STATE_PAUSED)
{
#ifdef CONFIG_AUDIO_MULTI_SESSION
ret = ioctl(pPlayer->devFd, AUDIOIOC_RESUME,
(unsigned long) pPlayer->session);
#else
ret = ioctl(pPlayer->devFd, AUDIOIOC_RESUME, 0);
#endif
if (ret == OK)
{
pPlayer->state = NXPLAYER_STATE_PLAYING;
}
}
return ret;
}
#endif /* CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME */
/****************************************************************************
* Name: nxplayer_fforward
*
* Selects to fast forward in the audio data stream. The fast forward
* operation can be cancelled by simply selected no sub-sampling with
* the AUDIO_SUBSAMPLE_NONE argument returning to normal 1x forward play.
* This function may be called multiple times to change fast forward rate.
*
* The preferred way to cancel a fast forward operation is via
* nxplayer_cancel_motion() that provides the option to also return to
* paused, non-playing state.
*
* Input Parameters:
* pPlayer - Pointer to the context to initialize
* subsample - Identifies the fast forward rate (in terms of sub-sampling,
* but does not explicitly require sub-sampling). See
* AUDIO_SUBSAMPLE_* definitions.
*
* Returned Value:
* OK if fast forward operation successful.
*
**************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_FFORWARD
int nxplayer_fforward(FAR struct nxplayer_s *pPlayer, uint8_t subsample)
{
struct audio_caps_desc_s cap_desc;
int ret;
DEBUGASSERT(pPlayer && subsample >= AUDIO_SUBSAMPLE_NONE &&
subsample <= AUDIO_SUBSAMPLE_MAX);
/* Send a CONFIGURE ioctl to the device to set the forward rate */
#ifdef CONFIG_AUDIO_MULTI_SESSION
cap_desc.session = pPlayer->session;
#endif
cap_desc.caps.ac_len = sizeof(struct audio_caps_s);
cap_desc.caps.ac_type = AUDIO_TYPE_PROCESSING;
cap_desc.caps.ac_format.hw = AUDIO_PU_SUBSAMPLE_FORWARD;
cap_desc.caps.ac_controls.b[0] = subsample;
ret = ioctl(pPlayer->devFd, AUDIOIOC_CONFIGURE, (unsigned long) &cap_desc);
if (ret < 0)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
auddbg("ERROR: ioctl AUDIOIOC_CONFIGURE failed: %d\n", errcode);
ret = -errcode;
}
return ret;
}
#endif
/****************************************************************************
* Name: nxplayer_rewind
*
* Selects to rewind in the audio data stream. The rewind operation must
* be cancelled with nxplayer_cancel_motion. This function may be called
* multiple times to change rewind rate.
*
* NOTE that cancellation of the rewind operation differs from
* cancellation of the fast forward operation because we must both restore
* the sub-sampling rate to 1x and also return to forward play.
* AUDIO_SUBSAMPLE_NONE is not a valid argument to this function.
*
* Input Parameters:
* pPlayer - Pointer to the context to initialize
* subsample - Identifies the rewind rate (in terms of sub-sampling, but
* does not explicitly require sub-sampling). See
* AUDIO_SUBSAMPLE_* definitions.
*
* Returned Value:
* OK if rewind operation successfully initiated.
*
**************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_REWIND
int nxplayer_rewind(FAR struct nxplayer_s *pPlayer, uint8_t subsample)
{
struct audio_caps_desc_s cap_desc;
int ret;
DEBUGASSERT(pPlayer && subsample >= AUDIO_SUBSAMPLE_MIN &&
subsample <= AUDIO_SUBSAMPLE_MAX);
/* Send a CONFIGURE ioctl to the device to set the forward rate */
#ifdef CONFIG_AUDIO_MULTI_SESSION
cap_desc.session= pPlayer->session;
#endif
cap_desc.caps.ac_len = sizeof(struct audio_caps_s);
cap_desc.caps.ac_type = AUDIO_TYPE_PROCESSING;
cap_desc.caps.ac_format.hw = AUDIO_PU_SUBSAMPLE_REWIND;
cap_desc.caps.ac_controls.b[0] = subsample;
ret = ioctl(pPlayer->devFd, AUDIOIOC_CONFIGURE, (unsigned long) &cap_desc);
if (ret < 0)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
auddbg("ERROR: ioctl AUDIOIOC_CONFIGURE failed: %d\n", errcode);
ret = -errcode;
}
return ret;
}
#endif
/****************************************************************************
* Name: nxplayer_cancel_motion
*
* Cancel a rewind or fast forward operation and return to either the
* paused state or to the normal, forward play state.
*
* Input Parameters:
* pPlayer - Pointer to the context to initialize
* paused - True: return to the paused state, False: return to the 1X
* forward play state.
*
* Returned Value:
* OK if rewind operation successfully cancelled.
*
**************************************************************************/
#if !defined(CONFIG_AUDIO_EXCLUDE_FFORWARD) || !defined(CONFIG_AUDIO_EXCLUDE_REWIND)
int nxplayer_cancel_motion(FAR struct nxplayer_s *pPlayer, bool paused)
{
int ret;
/* I think this is equivalent to calling nxplayer_fforward with the
* argument AUDIO_SUBSAMPLE_NONE: Forward motion with no sub-sampling.
*
* REVISIT: There is no way at present to cancel sub-sampling and return
* to pause atomically.
*/
ret = nxplayer_fforward(pPlayer, AUDIO_SUBSAMPLE_NONE);
if (ret < 0)
{
auddbg("ERROR: nxplayer_fforward failed: %d\n", ret);
return ret;
}
#ifndef CONFIG_AUDIO_EXCLUDE_PAUSE_RESUME
if (paused)
{
ret = nxplayer_pause(pPlayer);
if (ret < 0)
{
auddbg("ERROR: nxplayer_pause failed: %d\n", ret);
return ret;
}
}
#endif
return OK;
}
#endif
/****************************************************************************
* Name: nxplayer_setdevice
*
* nxplayer_setdevice() sets the perferred audio device to use with the
* provided nxplayer context.
*
****************************************************************************/
#ifdef CONFIG_NXPLAYER_INCLUDE_PREFERRED_DEVICE
int nxplayer_setdevice(FAR struct nxplayer_s *pPlayer, FAR const char *pDevice)
{
int tempFd;
struct audio_caps_s caps;
DEBUGASSERT(pPlayer != NULL);
DEBUGASSERT(pDevice != NULL);
/* Try to open the device */
tempFd = open(pDevice, O_RDWR);
if (tempFd == -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(tempFd, AUDIOIOC_GETCAPS, (unsigned long) &caps) != caps.ac_len)
{
/* Not an Audio device! */
close(tempFd);
return -ENODEV;
}
/* Close the file */
close(tempFd);
/* Save the path and format capabilities of the preferred device */
strncpy(pPlayer->prefdevice, pDevice, sizeof(pPlayer->prefdevice));
pPlayer->prefformat = caps.ac_format.b[0] | (caps.ac_format.b[1] << 8);
pPlayer->preftype = caps.ac_controls.b[0];
return OK;
}
#endif /* CONFIG_NXPLAYER_INCLUDE_PREFERRED_DEVICE */
/****************************************************************************
* Name: nxplayer_stop
*
* nxplayer_stop() stops the current playback and closes the file and
* the associated device.
*
* Input:
* pPlayer Pointer to the initialized MPlayer context
*
****************************************************************************/
#ifndef CONFIG_AUDIO_EXCLUDE_STOP
int nxplayer_stop(FAR struct nxplayer_s *pPlayer)
{
struct audio_msg_s term_msg;
FAR void* value;
DEBUGASSERT(pPlayer != NULL);
/* Validate we are not in IDLE state */
sem_wait(&pPlayer->sem); /* Get the semaphore */
if (pPlayer->state == NXPLAYER_STATE_IDLE)
{
sem_post(&pPlayer->sem); /* Release the semaphore */
return OK;
}
sem_post(&pPlayer->sem);
/* Notify the playback thread that it needs to cancel the playback */
term_msg.msgId = AUDIO_MSG_STOP;
term_msg.u.data = 0;
mq_send(pPlayer->mq, &term_msg, sizeof(term_msg), CONFIG_NXPLAYER_MSG_PRIO);
/* Join the thread. The thread will do all the cleanup. */
pthread_join(pPlayer->playId, &value);
pPlayer->playId = 0;
return OK;
}
#endif /* CONFIG_AUDIO_EXCLUDE_STOP */
/****************************************************************************
* Name: nxplayer_playfile
*
* nxplayer_playfile() tries to play the specified file using the Audio
* system. If a preferred device is specified, it will try to use that
* device otherwise it will perform a search of the Audio device files
* to find a suitable device.
*
* Input:
* pPlayer Pointer to the initialized MPlayer context
* pFilename Pointer to the filename to play
* filefmt Format of the file or AUD_FMT_UNDEF if unknown / to be
* determined by nxplayer_playfile()
*
* Returns:
* OK File is being played
* -EBUSY The media device is busy
* -ENOSYS The media file is an unsupported type
* -ENODEV No audio device suitable to play the media type
* -ENOENT The media file was not found
*
****************************************************************************/
int nxplayer_playfile(FAR struct nxplayer_s *pPlayer,
FAR const char *pFilename, int filefmt, int subfmt)
{
struct mq_attr attr;
struct sched_param sparam;
pthread_attr_t tattr;
void *value;
#ifdef CONFIG_NXPLAYER_INCLUDE_MEDIADIR
char path[128];
#endif
int tmpsubfmt = AUDIO_FMT_UNDEF;
int ret;
DEBUGASSERT(pPlayer != NULL);
DEBUGASSERT(pFilename != NULL);
if (pPlayer->state != NXPLAYER_STATE_IDLE)
{
return -EBUSY;
}
audvdbg("==============================\n");
audvdbg("Playing file %s\n", pFilename);
audvdbg("==============================\n");
/* Test that the specified file exists */
if ((pPlayer->fileFd = fopen(pFilename, "r")) == NULL)
{
/* File not found. Test if its in the mediadir */
#ifdef CONFIG_NXPLAYER_INCLUDE_MEDIADIR
snprintf(path, sizeof(path), "%s/%s", pPlayer->mediadir, pFilename);
if ((pPlayer->fileFd = fopen(path, "r")) == NULL)
{
#ifdef CONFIG_NXPLAYER_MEDIA_SEARCH
/* File not found in the media dir. Do a search */
if (nxplayer_mediasearch(pPlayer, pFilename, path, sizeof(path)) != OK)
{
auddbg("ERROR: Could not find file\n");
return -ENOENT;
}
#else
auddbg("ERROR: Could not open %s or %s\n", pFilename, path);
return -ENOENT;
#endif /* CONFIG_NXPLAYER_MEDIA_SEARCH */
}
#else /* CONFIG_NXPLAYER_INCLUDE_MEDIADIR */
auddbg("ERROR: Could not open %s\n", pFilename);
return -ENOENT;
#endif /* CONFIG_NXPLAYER_INCLUDE_MEDIADIR */
}
#ifdef CONFIG_NXPLAYER_FMT_FROM_EXT
/* Try to determine the format of audio file based on the extension */
if (filefmt == AUDIO_FMT_UNDEF)
{
filefmt = nxplayer_fmtfromextension(pPlayer, pFilename, &tmpsubfmt);
}
#endif
#ifdef CONFIG_NXPLAYER_FMT_FROM_HEADER
/* If type not identified, then test for known header types */
if (filefmt == AUDIO_FMT_UNDEF)
{
filefmt = nxplayer_fmtfromheader(pPlayer, &subfmt, &tmpsubfmt);
}
#endif
/* Test if we determined the file format */
if (filefmt == AUDIO_FMT_UNDEF)
{
/* Hmmm, it's some unknown / unsupported type */
auddbg("ERROR: Unsupported format: %d \n", filefmt);
ret = -ENOSYS;
goto err_out_nodev;
}
/* Test if we have a sub format assignment from above */
if (subfmt == AUDIO_FMT_UNDEF)
{
subfmt = tmpsubfmt;
}
/* Try to open the device */
ret = nxplayer_opendevice(pPlayer, filefmt, subfmt);
if (ret < 0)
{
/* Error opening the device */
auddbg("ERROR: nxplayer_opendevice failed: %d\n", ret);
goto err_out_nodev;
}
/* Try to reserve the device */
#ifdef CONFIG_AUDIO_MULTI_SESSION
ret = ioctl(pPlayer->devFd, AUDIOIOC_RESERVE,
(unsigned long)&pPlayer->session);
#else
ret = ioctl(pPlayer->devFd, AUDIOIOC_RESERVE, 0);
#endif
if (ret < 0)
{
/* Device is busy or error */
auddbg("ERROR: Failed to reserve device: %d\n", ret);
ret = -errno;
goto err_out;
}
/* Create a message queue for the playthread */
attr.mq_maxmsg = 16;
attr.mq_msgsize = sizeof(struct audio_msg_s);
attr.mq_curmsgs = 0;
attr.mq_flags = 0;
snprintf(pPlayer->mqname, sizeof(pPlayer->mqname), "/tmp/%0X", pPlayer);
pPlayer->mq = mq_open(pPlayer->mqname, O_RDWR | O_CREAT, 0644, &attr);
if (pPlayer->mq == NULL)
{
/* Unable to open message queue! */
ret = -errno;
auddbg("ERROR: mq_open failed: %d\n", ret);
goto err_out;
}
/* Register our message queue with the audio device */
ioctl(pPlayer->devFd, AUDIOIOC_REGISTERMQ, (unsigned long) pPlayer->mq);
/* Check if there was a previous thread and join it if there was
* to perform clean-up.
*/
if (pPlayer->playId != 0)
{
pthread_join(pPlayer->playId, &value);
}
/* Start the playfile thread to stream the media file to the
* audio device.
*/
pthread_attr_init(&tattr);
sparam.sched_priority = sched_get_priority_max(SCHED_FIFO) - 9;
(void)pthread_attr_setschedparam(&tattr, &sparam);
(void)pthread_attr_setstacksize(&tattr, CONFIG_NXPLAYER_PLAYTHREAD_STACKSIZE);
/* Add a reference count to the player for the thread and start the
* thread. We increment for the thread to avoid thread start-up
* race conditions.
*/
nxplayer_reference(pPlayer);
ret = pthread_create(&pPlayer->playId, &tattr, nxplayer_playthread,
(pthread_addr_t) pPlayer);
if (ret != OK)
{
auddbg("ERROR: Failed to create playthread: %d\n", ret);
goto err_out;
}
/* Name the thread */
pthread_setname_np(pPlayer->playId, "playthread");
return OK;
err_out:
close(pPlayer->devFd);
pPlayer->devFd = -1;
err_out_nodev:
if (pPlayer->fileFd != NULL)
{
fclose(pPlayer->fileFd);
pPlayer->fileFd = NULL;
}
return ret;
}
/****************************************************************************
* Name: nxplayer_setmediadir
*
* nxplayer_setmediadir() sets the root path for media searches.
*
****************************************************************************/
#ifdef CONFIG_NXPLAYER_INCLUDE_MEDIADIR
void nxplayer_setmediadir(FAR struct nxplayer_s *pPlayer,
FAR const char *mediadir)
{
strncpy(pPlayer->mediadir, mediadir, sizeof(pPlayer->mediadir));
}
#endif
/****************************************************************************
* Name: nxplayer_create
*
* nxplayer_create() allocates and initializes a nxplayer context for
* use by further nxplayer 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 nxplayer_s *nxplayer_create(void)
{
FAR struct nxplayer_s *pPlayer;
/* Allocate the memory */
pPlayer = (FAR struct nxplayer_s *) malloc(sizeof(struct nxplayer_s));
if (pPlayer == NULL)
{
return NULL;
}
/* Initialize the context data */
pPlayer->state = NXPLAYER_STATE_IDLE;
pPlayer->devFd = -1;
pPlayer->fileFd = NULL;
#ifdef CONFIG_NXPLAYER_INCLUDE_PREFERRED_DEVICE
pPlayer->prefdevice[0] = '\0';
pPlayer->prefformat = 0;
pPlayer->preftype = 0;
#endif
pPlayer->mq = NULL;
pPlayer->playId = 0;
pPlayer->crefs = 1;
#ifndef CONFIG_AUDIO_EXCLUDE_TONE
pPlayer->bass = 50;
pPlayer->treble = 50;
#endif
#ifndef CONFIG_AUDIO_EXCLUDE_BALANCE
pPlayer->balance = 500;
#endif
#ifndef CONFIG_AUDIO_EXCLUDE_VOLUME
pPlayer->volume = 400;
#endif
#ifdef CONFIG_AUDIO_MULTI_SESSION
pPlayer->session = NULL;
#endif
#ifdef CONFIG_NXPLAYER_INCLUDE_MEDIADIR
strncpy(pPlayer->mediadir, CONFIG_NXPLAYER_DEFAULT_MEDIADIR,
sizeof(pPlayer->mediadir));
#endif
sem_init(&pPlayer->sem, 0, 1);
return pPlayer;
}
/****************************************************************************
* Name: nxplayer_release
*
* nxplayer_release() reduces the reference count by one and if it
* reaches zero, frees the context.
*
* Input Parameters:
* pPlayer Pointer to the NxPlayer context
*
* Returned values: None
*
**************************************************************************/
void nxplayer_release(FAR struct nxplayer_s* pPlayer)
{
int refcount, ret;
FAR void* value;
/* Grab the semaphore */
while ((ret = sem_wait(&pPlayer->sem)) != OK)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
if (errcode != EINTR)
{
auddbg("ERROR: sem_wait failed: %d\n", errcode);
return;
}
}
/* Check if there was a previous thread and join it if there was */
if (pPlayer->playId != 0)
{
sem_post(&pPlayer->sem);
pthread_join(pPlayer->playId, &value);
pPlayer->playId = 0;
while ((ret = sem_wait(&pPlayer->sem)) != OK)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
if (errcode != -EINTR)
{
auddbg("ERROR: sem_wait failed: %d\n", errcode);
return;
}
}
}
/* Reduce the reference count */
refcount = pPlayer->crefs--;
sem_post(&pPlayer->sem);
/* If the ref count *was* one, then free the context */
if (refcount == 1)
free(pPlayer);
}
/****************************************************************************
* Name: nxplayer_reference
*
* nxplayer_reference() increments the reference count by one.
*
* Input Parameters:
* pPlayer Pointer to the NxPlayer context
*
* Returned values: None
*
**************************************************************************/
void nxplayer_reference(FAR struct nxplayer_s* pPlayer)
{
int ret;
/* Grab the semaphore */
while ((ret = sem_wait(&pPlayer->sem)) != OK)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
if (errcode != -EINTR)
{
auddbg("ERROR: sem_wait failed: %d\n", errcode);
return;
}
}
/* Increment the reference count */
pPlayer->crefs++;
sem_post(&pPlayer->sem);
}
/****************************************************************************
* Name: nxplayer_detach
*
* nxplayer_detach() detaches from the playthread to make it independant
* so the caller can abandon the context while the file is still
* being played.
*
* Input Parameters:
* pPlayer Pointer to the NxPlayer context
*
* Returned values: None
*
**************************************************************************/
void nxplayer_detach(FAR struct nxplayer_s* pPlayer)
{
#if 0
int ret;
/* Grab the semaphore */
while ((ret = sem_wait(&pPlayer->sem)) != OK)
{
int errcode = errno;
DEBUGASSERT(errcode > 0);
if (errcode != -EINTR)
{
auddbg("ERROR: sem_wait failed: %d\n", errcode);
return;
}
}
if (pPlayer->playId != NULL)
{
/* Do a pthread detach */
pthread_detach(pPlayer->playId);
pPlayer->playId = NULL;
}
sem_post(&pPlayer->sem);
#endif
}
/****************************************************************************
* Name: nxplayer_systemreset
*
* nxplayer_systemreset() performs a HW reset on all registered
* audio devices.
*
****************************************************************************/
#ifdef CONFIG_NXPLAYER_INCLUDE_SYSTEM_RESET
int nxplayer_systemreset(FAR struct nxplayer_s *pPlayer)
{
struct dirent *pDevice;
DIR *dirp;
char path[64];
/* 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;
}
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 ((pPlayer->devFd = open(path, O_RDWR)) != -1)
{
/* We have the device file open. Now issue an
* AUDIO ioctls to perform a HW reset
*/
ioctl(pPlayer->devFd, AUDIOIOC_HWRESET, 0);
/* Now close the device */
close(pPlayer->devFd);
}
}
pPlayer->devFd = -1;
return OK;
}
#endif /* CONFIG_NXPLAYER_INCLUDE_SYSTEM_RESET */
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