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Bug 556217 Update sydney_audio_sunaudio.c r=kinetik

This commit is contained in:
Ginn Chen 2010-04-15 18:43:28 +08:00
Родитель 203bfc6188
Коммит a6eceab161
1 изменённых файлов: 467 добавлений и 247 удалений
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714
media/libsydneyaudio/src/sydney_audio_sunaudio.c
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@ -15,7 +15,8 @@
* Copyright (C) 2008 Sun Microsystems, Inc.,
* Brian Lu <brian.lu@sun.com>
*
* Contributor(s):
* Contributor(s):
* Ginn Chen <ginn.chen@sun.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -31,55 +32,101 @@
*
* ***** END LICENSE BLOCK ***** *
*/
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stropts.h>
#include <sys/audio.h>
#include <sys/mixer.h>
#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stropts.h>
#include <unistd.h>
#include <sys/audio.h>
#include <sys/stat.h>
#include <sys/mixer.h>
#include "sydney_audio.h"
#define DEFAULT_AUDIO_DEVICE "/dev/audio"
/* Sun Audio implementation based heavily on sydney_audio_mac.c */
#define LOOP_WHILE_EINTR(v,func) do { (v) = (func); } \
while ((v) == -1 && errno == EINTR);
#define DEFAULT_AUDIO_DEVICE "/dev/audio"
#define DEFAULT_DSP_DEVICE "/dev/dsp"
/* Macros copied from audio_oss.h */
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (C) 4Front Technologies 1996-2008.
*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#define OSSIOCPARM_MASK 0x1fff /* parameters must be < 8192 bytes */
#define OSSIOC_VOID 0x00000000 /* no parameters */
#define OSSIOC_OUT 0x20000000 /* copy out parameters */
#define OSSIOC_IN 0x40000000 /* copy in parameters */
#define OSSIOC_INOUT (OSSIOC_IN|OSSIOC_OUT)
#define OSSIOC_SZ(t) ((sizeof (t) & OSSIOCPARM_MASK) << 16)
#define __OSSIO(x, y) ((int)(OSSIOC_VOID|(x<<8)|y))
#define __OSSIOR(x, y, t) ((int)(OSSIOC_OUT|OSSIOC_SZ(t)|(x<<8)|y))
#define __OSSIOWR(x, y, t) ((int)(OSSIOC_INOUT|OSSIOC_SZ(t)|(x<<8)|y))
#define SNDCTL_DSP_SPEED __OSSIOWR('P', 2, int)
#define SNDCTL_DSP_CHANNELS __OSSIOWR('P', 6, int)
#define SNDCTL_DSP_SETFMT __OSSIOWR('P', 5, int) /* Selects ONE fmt */
#define SNDCTL_DSP_GETPLAYVOL __OSSIOR('P', 24, int)
#define SNDCTL_DSP_SETPLAYVOL __OSSIOWR('P', 24, int)
#define SNDCTL_DSP_HALT_OUTPUT __OSSIO('P', 34)
#define AFMT_S16_LE 0x00000010
#define AFMT_S16_BE 0x00000020
#ifdef SA_LITTLE_ENDIAN
#define AFMT_S16_NE AFMT_S16_LE
#else
#define AFMT_S16_NE AFMT_S16_BE
#endif
typedef struct sa_buf sa_buf;
struct sa_buf {
unsigned int size; /* the size of data */
sa_buf *next;
unsigned char data[]; /* sound data */
unsigned int size;
unsigned int start;
unsigned int end;
sa_buf * next;
unsigned char data[];
};
struct sa_stream
{
int audio_fd;
pthread_mutex_t mutex;
struct sa_stream {
bool using_oss;
int output_fd;
pthread_t thread_id;
int playing;
pthread_mutex_t mutex;
bool playing;
int64_t bytes_played;
/* audio format info */
/* default setting */
unsigned int default_n_channels;
unsigned int default_rate;
unsigned int default_precision;
/* used settings */
unsigned int rate;
unsigned int n_channels;
unsigned int precision;
unsigned int bytes_per_ch;
/* buffer list */
sa_buf *bl_head;
sa_buf *bl_tail;
sa_buf * bl_head;
sa_buf * bl_tail;
int n_bufs;
};
/* Use a default buffer size with enough room for one second of audio,
@ -87,10 +134,15 @@ struct sa_stream
* a generous limit on the number of buffers.
*/
#define BUF_SIZE (2 * 44100 * 4)
#define BUF_LIMIT 5
static void* audio_callback(void* s);
#if BUF_LIMIT < 2
#error BUF_LIMIT must be at least 2!
#endif
static sa_buf *new_buffer(int size);
static void *audio_callback(void *s);
static sa_buf *new_buffer(void);
static int shutdown_device(sa_stream_t *s);
/*
* -----------------------------------------------------------------------------
@ -106,163 +158,181 @@ sa_stream_create_pcm(
sa_pcm_format_t format,
unsigned int rate,
unsigned int n_channels
)
{
sa_stream_t * s = 0;
/* Make sure we return a NULL stream pointer on failure. */
if (_s == NULL)
) {
/*
* Make sure we return a NULL stream pointer on failure.
*/
if (_s == NULL) {
return SA_ERROR_INVALID;
}
*_s = NULL;
if (mode != SA_MODE_WRONLY)
if (mode != SA_MODE_WRONLY) {
return SA_ERROR_NOT_SUPPORTED;
if (format != SA_PCM_FORMAT_S16_LE)
}
if (format != SA_PCM_FORMAT_S16_NE) {
return SA_ERROR_NOT_SUPPORTED;
}
/*
* Allocate the instance and required resources.
*/
if ((s = malloc(sizeof(sa_stream_t))) == NULL)
sa_stream_t *s;
if ((s = malloc(sizeof(sa_stream_t))) == NULL) {
return SA_ERROR_OOM;
}
if ((s->bl_head = new_buffer()) == NULL) {
free(s);
return SA_ERROR_SYSTEM;
}
if (pthread_mutex_init(&s->mutex, NULL) != 0) {
free(s->bl_head);
free(s);
return SA_ERROR_SYSTEM;
}
s->audio_fd = NULL;
s->rate = rate;
s->n_channels = n_channels;
s->precision = 16;
s->playing = 0;
s->bytes_played = 0;
s->bl_tail = s->bl_head = NULL;
s->output_fd = -1;
s->playing = false;
s->bytes_played = 0;
s->rate = rate;
s->n_channels = n_channels;
s->bytes_per_ch = 2;
s->bl_tail = s->bl_head;
s->n_bufs = 1;
*_s = s;
return SA_SUCCESS;
}
int
sa_stream_open(sa_stream_t *s)
{
int fd,err;
audio_info_t audio_info;
char *device_name;
/* according to the sun audio manual (man audio(7I))
* use the device name set in AUDIODEV
* environment variaible if it is set
*/
device_name = getenv("AUDIODEV");
if (!device_name)
device_name = DEFAULT_AUDIO_DEVICE;
if (s == NULL)
sa_stream_open(sa_stream_t *s) {
if (s == NULL) {
return SA_ERROR_NO_INIT;
if (s->audio_fd != NULL)
}
if (s->output_fd != -1) {
return SA_ERROR_INVALID;
fd = open(device_name,O_WRONLY | O_NONBLOCK);
if (fd >= 0)
{
close (fd);
fd = open (device_name, O_WRONLY);
}
if ( fd < 0 )
/*
* Open the default audio output unit.
*/
/* If UTAUDIODEV is set, use it with Sun Audio interface */
char * sa_device_name = getenv("UTAUDIODEV");
char * dsp_device_name = NULL;
if (!sa_device_name) {
dsp_device_name = getenv("AUDIODSP");
if (!dsp_device_name) {
dsp_device_name = DEFAULT_DSP_DEVICE;
}
sa_device_name = getenv("AUDIODEV");
if (!sa_device_name) {
sa_device_name = DEFAULT_AUDIO_DEVICE;
}
}
int fd = -1;
s->using_oss = false;
/* Try to use OSS if available */
if (dsp_device_name) {
fd = open(dsp_device_name, O_WRONLY, 0);
if (fd >= 0) {
s->using_oss = true;
}
}
/* Try Sun Audio */
if (!s->using_oss) {
fd = open(sa_device_name, O_WRONLY | O_NONBLOCK);
}
if (fd < 0)
{
printf("Open %s failed:%s ",device_name,strerror(errno));
printf("Open %s failed:%s.\n", sa_device_name, strerror(errno));
return SA_ERROR_NO_DEVICE;
}
AUDIO_INITINFO(&audio_info);
// save the default settings for resetting
err = ioctl(fd, AUDIO_GETINFO, &audio_info);
if (err == -1)
{
perror("ioctl AUDIO_GETINFO failed");
close(fd);
return SA_ERROR_SYSTEM;
if (s->using_oss) {
/* set the playback rate */
if (ioctl(fd, SNDCTL_DSP_SPEED, &(s->rate)) < 0) {
close(fd);
return SA_ERROR_NOT_SUPPORTED;
}
/* set the channel numbers */
if (ioctl(fd, SNDCTL_DSP_CHANNELS, &(s->n_channels)) < 0) {
close(fd);
return SA_ERROR_NOT_SUPPORTED;
}
int format = AFMT_S16_NE;
if (ioctl(fd, SNDCTL_DSP_SETFMT, &format) < 0) {
close(fd);
return SA_ERROR_NOT_SUPPORTED;
}
s->output_fd = fd;
return SA_SUCCESS;
}
s->default_n_channels = audio_info.play.channels;
s->default_rate = audio_info.play.sample_rate;
s->default_precision = audio_info.play.precision;
audio_info_t audio_info;
AUDIO_INITINFO(&audio_info)
audio_info.play.sample_rate = s->rate;
audio_info.play.channels = s->n_channels;
audio_info.play.precision = s->precision;
audio_info.play.channels = s->n_channels;
audio_info.play.precision = s->bytes_per_ch * 8;
/* Signed Linear PCM encoding */
audio_info.play.encoding = AUDIO_ENCODING_LINEAR;
err=ioctl(fd,AUDIO_SETINFO,&audio_info);
if (err== -1)
return SA_ERROR_NOT_SUPPORTED;
AUDIO_INITINFO(&audio_info)
err=ioctl(fd,AUDIO_GETINFO,&audio_info);
if (err== -1)
{
perror("ioctl AUDIO_SETINFO failed");
if (ioctl(fd, AUDIO_SETINFO, &audio_info) == -1) {
printf("ioctl AUDIO_SETINFO failed.\n");
close(fd);
return SA_ERROR_NOT_SUPPORTED;
}
s->audio_fd = fd;
s->output_fd = fd;
return SA_SUCCESS;
}
int
sa_stream_destroy(sa_stream_t *s)
{
int result;
if (s == NULL)
sa_stream_destroy(sa_stream_t *s) {
if (s == NULL) {
return SA_SUCCESS;
pthread_mutex_lock(&s->mutex);
result = SA_SUCCESS;
}
/*
* Shut down the audio output device.
* and release resources
* Join the thread.
*/
if (s->audio_fd != NULL)
{
if (close(s->audio_fd) < 0)
{
perror("Close sun audio fd failed");
result = SA_ERROR_SYSTEM;
}
bool thread_created = false;
pthread_mutex_lock(&s->mutex);
if (s->playing) {
thread_created = true;
s->playing = false;
}
s->thread_id = 0;
while (s->bl_head != NULL) {
sa_buf * next = s->bl_head->next;
free(s->bl_head);
s->bl_head = next;
}
pthread_mutex_unlock(&s->mutex);
if (thread_created) {
pthread_join(s->thread_id, NULL);
}
int result = SA_SUCCESS;
/*
* Shutdown the audio output device.
*/
result = shutdown_device(s);
/*
* Release resouces.
*/
if (pthread_mutex_destroy(&s->mutex) != 0) {
result = SA_ERROR_SYSTEM;
}
while (s->bl_head != NULL) {
sa_buf * next = s->bl_head->next;
free(s->bl_head);
s->bl_head = next;
}
free(s);
return result;
@ -275,94 +345,140 @@ sa_stream_destroy(sa_stream_t *s)
*/
int
sa_stream_write(sa_stream_t *s, const void *data, size_t nbytes)
{
int result;
sa_buf *buf;
if (s == NULL || s->audio_fd == NULL)
sa_stream_write(sa_stream_t *s, const void *data, size_t nbytes) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
if (nbytes == 0)
}
if (nbytes == 0) {
return SA_SUCCESS;
/*
* Append the new data to the end of our buffer list.
*/
result = SA_SUCCESS;
buf = new_buffer(nbytes);
if (buf == NULL)
return SA_ERROR_OOM;
memcpy(buf->data,data, nbytes);
}
pthread_mutex_lock(&s->mutex);
if (!s->bl_head)
s->bl_head = buf;
else
s->bl_tail->next = buf;
s->bl_tail = buf;
/*
* Append the new data to the end of our buffer list.
*/
int result = SA_SUCCESS;
while (1) {
unsigned int avail = s->bl_tail->size - s->bl_tail->end;
pthread_mutex_unlock(&s->mutex);
if (nbytes <= avail) {
/*
* The new data will fit into the current tail buffer, so
* just copy it in and we're done.
*/
memcpy(s->bl_tail->data + s->bl_tail->end, data, nbytes);
s->bl_tail->end += nbytes;
break;
/*
* Once we have our first block of audio data, enable the audio callback
* function. This doesn't need to be protected by the mutex, because
* s->playing is not used in the audio callback thread, and it's probably
* better not to be inside the lock when we enable the audio callback.
*/
} else {
/*
* Copy what we can into the tail and allocate a new buffer
* for the rest.
*/
memcpy(s->bl_tail->data + s->bl_tail->end, data, avail);
s->bl_tail->end += avail;
data = ((unsigned char *)data) + avail;
nbytes -= avail;
/*
* If we still have data left to copy but we've hit the limit of
* allowable buffer allocations, we need to spin for a bit to allow
* the audio callback function to slurp some more data up.
*/
if (nbytes > 0 && s->n_bufs == BUF_LIMIT) {
#ifdef TIMING_TRACE
printf("#"); /* too much audio data */
#endif
if (!s->playing) {
/*
* We haven't even started playing yet! That means the
* BUF_SIZE/BUF_LIMIT values are too low... Not much we can
* do here; spinning won't help because the audio callback
* hasn't been enabled yet. Oh well, error time.
*/
printf("Too much audio data received before audio device enabled!\n");
result = SA_ERROR_SYSTEM;
break;
}
while (s->n_bufs == BUF_LIMIT) {
pthread_mutex_unlock(&s->mutex);
struct timespec ts = {0, 1000000};
nanosleep(&ts, NULL);
pthread_mutex_lock(&s->mutex);
}
}
/*
* Allocate a new tail buffer, and go 'round again to fill it up.
*/
if ((s->bl_tail->next = new_buffer()) == NULL) {
result = SA_ERROR_OOM;
break;
}
s->n_bufs++;
s->bl_tail = s->bl_tail->next;
} /* if (nbytes <= avail), else */
} /* while (1) */
/*
* Once we have our first block of audio data, enable the audio callback
* function.
*/
if (!s->playing) {
s->playing = 1;
s->playing = true;
if (pthread_create(&s->thread_id, NULL, audio_callback, s) != 0) {
result = SA_ERROR_SYSTEM;
}
}
}
pthread_mutex_unlock(&s->mutex);
return result;
}
static void*
audio_callback(void* data)
{
sa_stream_t* s = (sa_stream_t*)data;
sa_buf *buf;
int fd,nbytes_written,bytes,nbytes;
static void *
audio_callback(void *data) {
sa_stream_t *s = data;
fd = s->audio_fd;
while (1)
{
if (s->thread_id == 0)
break;
pthread_mutex_lock(&s->mutex);
while (s->bl_head)
{
buf = s->bl_head;
s->bl_head = s->bl_head->next;
nbytes_written = 0;
nbytes = buf->size;
while (nbytes_written < nbytes)
{
LOOP_WHILE_EINTR(bytes,(write(fd, (void *)((buf->data)+nbytes_written), nbytes-nbytes_written)));
nbytes_written += bytes;
if (nbytes_written != nbytes)
printf("SunAudio\tWrite completed short - %d vs %d. Write more data\n",nbytes_written,nbytes);
pthread_mutex_lock(&s->mutex);
while (s->playing) {
/*
* Consume data from the start of the buffer list.
*/
while (s->output_fd != -1) {
unsigned int avail = s->bl_head->end - s->bl_head->start;
if (avail > 0) {
int written = write(s->output_fd, s->bl_head->data + s->bl_head->start, avail);
if (written == -1) {
break; /* Try again later. */
}
s->bl_head->start += written;
s->bytes_played += written;
if (written < avail) {
break;
}
}
free(buf);
s->bytes_played += nbytes;
}
pthread_mutex_unlock(&s->mutex);
}
sa_buf * next = s->bl_head->next;
if (next == NULL) {
#ifdef TIMING_TRACE
printf("!"); /* not enough audio data */
#endif
break;
}
free(s->bl_head);
s->bl_head = next;
s->n_bufs--;
} /* while (s->output_fd != -1) */
pthread_mutex_unlock(&s->mutex);
struct timespec ts = {0, 1000000};
nanosleep(&ts, NULL);
pthread_mutex_lock(&s->mutex);
} /* s->playing */
pthread_mutex_unlock(&s->mutex);
return NULL;
}
@ -373,20 +489,23 @@ audio_callback(void* data)
*/
int
sa_stream_get_write_size(sa_stream_t *s, size_t *size)
{
sa_buf * b;
size_t used = 0;
if (s == NULL )
sa_stream_get_write_size(sa_stream_t *s, size_t *size) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
}
/* there is no interface to get the avaiable writing buffer size
* in sun audio, we return max size here to force sa_stream_write() to
* be called when there is data to be played
pthread_mutex_lock(&s->mutex);
/*
* The sum of the free space in the tail buffer plus the size of any new
* buffers represents the write space available before blocking.
*/
*size = BUF_SIZE;
unsigned int avail = s->bl_tail->size - s->bl_tail->end;
avail += (BUF_LIMIT - s->n_bufs) * BUF_SIZE;
*size = avail;
pthread_mutex_unlock(&s->mutex);
return SA_SUCCESS;
}
@ -396,9 +515,8 @@ sa_stream_get_write_size(sa_stream_t *s, size_t *size)
*/
int
sa_stream_get_position(sa_stream_t *s, sa_position_t position, int64_t *pos)
{
if (s == NULL) {
sa_stream_get_position(sa_stream_t *s, sa_position_t position, int64_t *pos) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
}
if (position != SA_POSITION_WRITE_SOFTWARE) {
@ -411,17 +529,106 @@ sa_stream_get_position(sa_stream_t *s, sa_position_t position, int64_t *pos)
return SA_SUCCESS;
}
int
sa_stream_drain(sa_stream_t *s) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
}
while (1) {
pthread_mutex_lock(&s->mutex);
sa_buf * b;
size_t used = 0;
for (b = s->bl_head; b != NULL; b = b->next) {
used += b->end - b->start;
}
pthread_mutex_unlock(&s->mutex);
if (used == 0) {
break;
}
struct timespec ts = {0, 1000000};
nanosleep(&ts, NULL);
}
return SA_SUCCESS;
}
int
sa_stream_pause(sa_stream_t *s) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
}
if (s->using_oss) {
return SA_ERROR_NOT_SUPPORTED;
}
int result = SA_SUCCESS;
pthread_mutex_lock(&s->mutex);
result = shutdown_device(s);
if (result == SA_SUCCESS) {
s->output_fd = -1;
}
pthread_mutex_unlock(&s->mutex);
return result;
}
int
sa_stream_resume(sa_stream_t *s) {
if (s == NULL) {
return SA_ERROR_NO_INIT;
}
if (s->using_oss) {
return SA_ERROR_NOT_SUPPORTED;
}
pthread_mutex_lock(&s->mutex);
int result = sa_stream_open(s);
pthread_mutex_unlock(&s->mutex);
return result;
}
static sa_buf *
new_buffer(int size)
{
sa_buf * b = malloc(sizeof(sa_buf) + size);
new_buffer(void) {
sa_buf * b = malloc(sizeof(sa_buf) + BUF_SIZE);
if (b != NULL) {
b->size = size;
b->size = BUF_SIZE;
b->start = 0;
b->end = 0;
b->next = NULL;
}
return b;
}
static int
shutdown_device(sa_stream_t *s) {
if (s->output_fd != -1)
{
/* Flush buffer. */
if (s->using_oss) {
ioctl(s->output_fd, SNDCTL_DSP_HALT_OUTPUT);
} else {
ioctl(s->output_fd, I_FLUSH);
}
if (close(s->output_fd) < 0)
{
return SA_ERROR_SYSTEM;
}
}
return SA_SUCCESS;
}
/*
* -----------------------------------------------------------------------------
* Startup and shutdown functions
* -----------------------------------------------------------------------------
/*
* -----------------------------------------------------------------------------
* Extension functions
@ -429,25 +636,35 @@ new_buffer(int size)
*/
int
sa_stream_set_volume_abs(sa_stream_t *s, float vol)
{
unsigned int newVolume = 0;
int err;
audio_info_t audio_info;
sa_stream_set_volume_abs(sa_stream_t *s, float vol) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
}
if (s->using_oss) {
int mvol = ((int)(100 * vol)) | ((int)(100 * vol) << 8);
if (ioctl(s->output_fd, SNDCTL_DSP_SETPLAYVOL, &mvol) < 0) {
return SA_ERROR_SYSTEM;
}
return SA_SUCCESS;
}
newVolume = (AUDIO_MAX_GAIN-AUDIO_MIN_GAIN)*vol+AUDIO_MIN_GAIN;
unsigned int newVolume = (AUDIO_MAX_GAIN - AUDIO_MIN_GAIN) * vol + AUDIO_MIN_GAIN;
/* Check if the new volume is valid or not */
if ( newVolume < AUDIO_MIN_GAIN || newVolume > AUDIO_MAX_GAIN )
return SA_ERROR_INVALID;
pthread_mutex_lock(&s->mutex);
audio_info_t audio_info;
AUDIO_INITINFO(&audio_info);
audio_info.play.gain = newVolume;
err=ioctl(s->audio_fd,AUDIO_SETINFO,&audio_info); // The actual setting of the parameters
int err = ioctl(s->output_fd, AUDIO_SETINFO, &audio_info);
pthread_mutex_unlock(&s->mutex);
if (err == -1)
{
perror("sa_stream_set_volume_abs failed") ;
perror("sa_stream_set_volume_abs failed\n");
return SA_ERROR_SYSTEM;
}
@ -455,27 +672,33 @@ sa_stream_set_volume_abs(sa_stream_t *s, float vol)
}
int
sa_stream_get_volume_abs(sa_stream_t *s, float *vol)
{
float volume;
int err;
audio_info_t audio_info;
if (s == NULL || s->audio_fd == NULL) {
sa_stream_get_volume_abs(sa_stream_t *s, float *vol) {
if (s == NULL || s->output_fd == -1) {
return SA_ERROR_NO_INIT;
}
if (s->using_oss) {
int mvol;
if (ioctl(s->output_fd, SNDCTL_DSP_GETPLAYVOL, &mvol) < 0){
return SA_ERROR_SYSTEM;
}
*vol = ((mvol & 0xFF) + (mvol >> 8)) / 200.0f;
return SA_SUCCESS;
}
pthread_mutex_lock(&s->mutex);
audio_info_t audio_info;
AUDIO_INITINFO(&audio_info);
err=ioctl(s->audio_fd,AUDIO_GETINFO,&audio_info);
int err = ioctl(s->output_fd, AUDIO_GETINFO, &audio_info);
pthread_mutex_unlock(&s->mutex);
if (err == -1)
{
perror("sa_stream_get_volume_abs failed");
perror("sa_stream_get_volume_abs failed\n");
return SA_ERROR_SYSTEM;
}
volume = (float)((audio_info.play.gain - AUDIO_MIN_GAIN))/(AUDIO_MAX_GAIN - AUDIO_MIN_GAIN);
*vol = volume;
*vol = (float)((audio_info.play.gain - AUDIO_MIN_GAIN))/(AUDIO_MAX_GAIN - AUDIO_MIN_GAIN);
return SA_SUCCESS;
}
@ -487,8 +710,6 @@ sa_stream_get_volume_abs(sa_stream_t *s, float *vol)
*/
#define UNSUPPORTED(func) func { return SA_ERROR_NOT_SUPPORTED; }
UNSUPPORTED(int sa_stream_pause(sa_stream_t *s))
UNSUPPORTED(int sa_stream_resume(sa_stream_t *s))
UNSUPPORTED(int sa_stream_create_opaque(sa_stream_t **s, const char *client_name, sa_mode_t mode, const char *codec))
UNSUPPORTED(int sa_stream_set_write_lower_watermark(sa_stream_t *s, size_t size))
UNSUPPORTED(int sa_stream_set_read_lower_watermark(sa_stream_t *s, size_t size))
@ -543,7 +764,6 @@ UNSUPPORTED(int sa_stream_write_ni(sa_stream_t *s, unsigned int channel, const v
UNSUPPORTED(int sa_stream_pwrite(sa_stream_t *s, const void *data, size_t nbytes, int64_t offset, sa_seek_t whence))
UNSUPPORTED(int sa_stream_pwrite_ni(sa_stream_t *s, unsigned int channel, const void *data, size_t nbytes, int64_t offset, sa_seek_t whence))
UNSUPPORTED(int sa_stream_get_read_size(sa_stream_t *s, size_t *size))
UNSUPPORTED(int sa_stream_drain(sa_stream_t *s))
const char *sa_strerror(int code) { return NULL; }