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-rw-r--r--src/oss.c612
1 files changed, 307 insertions, 305 deletions
diff --git a/src/oss.c b/src/oss.c
index eebc2f8..222503c 100644
--- a/src/oss.c
+++ b/src/oss.c
@@ -1,3 +1,5 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
/***
This file is part of libcanberra.
@@ -57,474 +59,474 @@
struct private;
struct outstanding {
- CA_LLIST_FIELDS(struct outstanding);
- ca_bool_t dead;
- uint32_t id;
- ca_finish_callback_t callback;
- void *userdata;
- ca_sound_file *file;
- int pcm;
- int pipe_fd[2];
- ca_context *context;
+ CA_LLIST_FIELDS(struct outstanding);
+ ca_bool_t dead;
+ uint32_t id;
+ ca_finish_callback_t callback;
+ void *userdata;
+ ca_sound_file *file;
+ int pcm;
+ int pipe_fd[2];
+ ca_context *context;
};
struct private {
- ca_theme_data *theme;
- ca_mutex *outstanding_mutex;
- ca_bool_t signal_semaphore;
- sem_t semaphore;
- ca_bool_t semaphore_allocated;
- CA_LLIST_HEAD(struct outstanding, outstanding);
+ ca_theme_data *theme;
+ ca_mutex *outstanding_mutex;
+ ca_bool_t signal_semaphore;
+ sem_t semaphore;
+ ca_bool_t semaphore_allocated;
+ CA_LLIST_HEAD(struct outstanding, outstanding);
};
#define PRIVATE(c) ((struct private *) ((c)->private))
static void outstanding_free(struct outstanding *o) {
- ca_assert(o);
+ ca_assert(o);
- if (o->pipe_fd[1] >= 0)
- close(o->pipe_fd[1]);
+ if (o->pipe_fd[1] >= 0)
+ close(o->pipe_fd[1]);
- if (o->pipe_fd[0] >= 0)
- close(o->pipe_fd[0]);
+ if (o->pipe_fd[0] >= 0)
+ close(o->pipe_fd[0]);
- if (o->file)
- ca_sound_file_close(o->file);
+ if (o->file)
+ ca_sound_file_close(o->file);
- if (o->pcm >= 0) {
- close(o->pcm);
- o->pcm = -1;
- }
+ if (o->pcm >= 0) {
+ close(o->pcm);
+ o->pcm = -1;
+ }
- ca_free(o);
+ ca_free(o);
}
int driver_open(ca_context *c) {
- struct private *p;
+ struct private *p;
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(!c->driver || ca_streq(c->driver, "oss"), CA_ERROR_NODRIVER);
- ca_return_val_if_fail(!PRIVATE(c), CA_ERROR_STATE);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(!c->driver || ca_streq(c->driver, "oss"), CA_ERROR_NODRIVER);
+ ca_return_val_if_fail(!PRIVATE(c), CA_ERROR_STATE);
- if (!(c->private = p = ca_new0(struct private, 1)))
- return CA_ERROR_OOM;
+ if (!(c->private = p = ca_new0(struct private, 1)))
+ return CA_ERROR_OOM;
- if (!(p->outstanding_mutex = ca_mutex_new())) {
- driver_destroy(c);
- return CA_ERROR_OOM;
- }
+ if (!(p->outstanding_mutex = ca_mutex_new())) {
+ driver_destroy(c);
+ return CA_ERROR_OOM;
+ }
- if (sem_init(&p->semaphore, 0, 0) < 0) {
- driver_destroy(c);
- return CA_ERROR_OOM;
- }
+ if (sem_init(&p->semaphore, 0, 0) < 0) {
+ driver_destroy(c);
+ return CA_ERROR_OOM;
+ }
- p->semaphore_allocated = TRUE;
+ p->semaphore_allocated = TRUE;
- return CA_SUCCESS;
+ return CA_SUCCESS;
}
int driver_destroy(ca_context *c) {
- struct private *p;
- struct outstanding *out;
+ struct private *p;
+ struct outstanding *out;
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(c->private, CA_ERROR_STATE);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c->private, CA_ERROR_STATE);
- p = PRIVATE(c);
+ p = PRIVATE(c);
- if (p->outstanding_mutex) {
- ca_mutex_lock(p->outstanding_mutex);
+ if (p->outstanding_mutex) {
+ ca_mutex_lock(p->outstanding_mutex);
- /* Tell all player threads to terminate */
- for (out = p->outstanding; out; out = out->next) {
+ /* Tell all player threads to terminate */
+ for (out = p->outstanding; out; out = out->next) {
- if (out->dead)
- continue;
+ if (out->dead)
+ continue;
- out->dead = TRUE;
+ out->dead = TRUE;
- if (out->callback)
- out->callback(c, out->id, CA_ERROR_DESTROYED, out->userdata);
+ if (out->callback)
+ out->callback(c, out->id, CA_ERROR_DESTROYED, out->userdata);
- /* This will cause the thread to wakeup and terminate */
- if (out->pipe_fd[1] >= 0) {
- close(out->pipe_fd[1]);
- out->pipe_fd[1] = -1;
- }
- }
+ /* This will cause the thread to wakeup and terminate */
+ if (out->pipe_fd[1] >= 0) {
+ close(out->pipe_fd[1]);
+ out->pipe_fd[1] = -1;
+ }
+ }
+
+ if (p->semaphore_allocated) {
+ /* Now wait until all players are destroyed */
+ p->signal_semaphore = TRUE;
+ while (p->outstanding) {
+ ca_mutex_unlock(p->outstanding_mutex);
+ sem_wait(&p->semaphore);
+ ca_mutex_lock(p->outstanding_mutex);
+ }
+ }
- if (p->semaphore_allocated) {
- /* Now wait until all players are destroyed */
- p->signal_semaphore = TRUE;
- while (p->outstanding) {
ca_mutex_unlock(p->outstanding_mutex);
- sem_wait(&p->semaphore);
- ca_mutex_lock(p->outstanding_mutex);
- }
+ ca_mutex_free(p->outstanding_mutex);
}
- ca_mutex_unlock(p->outstanding_mutex);
- ca_mutex_free(p->outstanding_mutex);
- }
-
- if (p->theme)
- ca_theme_data_free(p->theme);
+ if (p->theme)
+ ca_theme_data_free(p->theme);
- if (p->semaphore_allocated)
- sem_destroy(&p->semaphore);
+ if (p->semaphore_allocated)
+ sem_destroy(&p->semaphore);
- ca_free(p);
+ ca_free(p);
- c->private = NULL;
+ c->private = NULL;
- return CA_SUCCESS;
+ return CA_SUCCESS;
}
int driver_change_device(ca_context *c, const char *device) {
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(c->private, CA_ERROR_STATE);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c->private, CA_ERROR_STATE);
- return CA_SUCCESS;
+ return CA_SUCCESS;
}
int driver_change_props(ca_context *c, ca_proplist *changed, ca_proplist *merged) {
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(changed, CA_ERROR_INVALID);
- ca_return_val_if_fail(merged, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(changed, CA_ERROR_INVALID);
+ ca_return_val_if_fail(merged, CA_ERROR_INVALID);
- return CA_SUCCESS;
+ return CA_SUCCESS;
}
int driver_cache(ca_context *c, ca_proplist *proplist) {
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(proplist, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(proplist, CA_ERROR_INVALID);
- return CA_ERROR_NOTSUPPORTED;
+ return CA_ERROR_NOTSUPPORTED;
}
static int translate_error(int error) {
- switch (error) {
+ switch (error) {
case ENODEV:
case ENOENT:
- return CA_ERROR_NOTFOUND;
+ return CA_ERROR_NOTFOUND;
case EACCES:
case EPERM:
- return CA_ERROR_ACCESS;
+ return CA_ERROR_ACCESS;
case ENOMEM:
- return CA_ERROR_OOM;
+ return CA_ERROR_OOM;
case EBUSY:
- return CA_ERROR_NOTAVAILABLE;
+ return CA_ERROR_NOTAVAILABLE;
case EINVAL:
- return CA_ERROR_INVALID;
+ return CA_ERROR_INVALID;
case ENOSYS:
- return CA_ERROR_NOTSUPPORTED;
+ return CA_ERROR_NOTSUPPORTED;
default:
- if (ca_debug())
- fprintf(stderr, "Got unhandled error from OSS: %s\n", strerror(error));
- return CA_ERROR_IO;
- }
+ if (ca_debug())
+ fprintf(stderr, "Got unhandled error from OSS: %s\n", strerror(error));
+ return CA_ERROR_IO;
+ }
}
static int open_oss(ca_context *c, struct outstanding *out) {
- struct private *p;
- int mode, val, test, ret;
+ struct private *p;
+ int mode, val, test, ret;
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(c->private, CA_ERROR_STATE);
- ca_return_val_if_fail(out, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c->private, CA_ERROR_STATE);
+ ca_return_val_if_fail(out, CA_ERROR_INVALID);
- /* In OSS we have no way to configure a channel mapping for
- * multichannel streams. We cannot support those files hence */
- ca_return_val_if_fail(ca_sound_file_get_nchannels(out->file) <= 2, CA_ERROR_NOTSUPPORTED);
+ /* In OSS we have no way to configure a channel mapping for
+ * multichannel streams. We cannot support those files hence */
+ ca_return_val_if_fail(ca_sound_file_get_nchannels(out->file) <= 2, CA_ERROR_NOTSUPPORTED);
- p = PRIVATE(c);
+ p = PRIVATE(c);
- if ((out->pcm = open(c->device ? c->device : "/dev/dsp", O_WRONLY | O_NONBLOCK, 0)) < 0)
- goto finish_errno;
+ if ((out->pcm = open(c->device ? c->device : "/dev/dsp", O_WRONLY | O_NONBLOCK, 0)) < 0)
+ goto finish_errno;
- if ((mode = fcntl(out->pcm, F_GETFL)) < 0)
- goto finish_errno;
+ if ((mode = fcntl(out->pcm, F_GETFL)) < 0)
+ goto finish_errno;
- mode &= ~O_NONBLOCK;
+ mode &= ~O_NONBLOCK;
- if (fcntl(out->pcm, F_SETFL, mode) < 0)
- goto finish_errno;
+ if (fcntl(out->pcm, F_SETFL, mode) < 0)
+ goto finish_errno;
- switch (ca_sound_file_get_sample_type(out->file)) {
+ switch (ca_sound_file_get_sample_type(out->file)) {
case CA_SAMPLE_U8:
- val = AFMT_U8;
- break;
+ val = AFMT_U8;
+ break;
case CA_SAMPLE_S16NE:
- val = AFMT_S16_NE;
- break;
+ val = AFMT_S16_NE;
+ break;
case CA_SAMPLE_S16RE:
#if __BYTE_ORDER == __LITTLE_ENDIAN
- val = AFMT_S16_BE;
+ val = AFMT_S16_BE;
#else
- val = AFMT_S16_LE;
+ val = AFMT_S16_LE;
#endif
- break;
- }
+ break;
+ }
- test = val;
- if (ioctl(out->pcm, SNDCTL_DSP_SETFMT, &val) < 0)
- goto finish_errno;
+ test = val;
+ if (ioctl(out->pcm, SNDCTL_DSP_SETFMT, &val) < 0)
+ goto finish_errno;
- if (val != test) {
- ret = CA_ERROR_NOTSUPPORTED;
- goto finish_ret;
- }
+ if (val != test) {
+ ret = CA_ERROR_NOTSUPPORTED;
+ goto finish_ret;
+ }
- test = val = (int) ca_sound_file_get_nchannels(out->file);
- if (ioctl(out->pcm, SNDCTL_DSP_CHANNELS, &val) < 0)
- goto finish_errno;
+ test = val = (int) ca_sound_file_get_nchannels(out->file);
+ if (ioctl(out->pcm, SNDCTL_DSP_CHANNELS, &val) < 0)
+ goto finish_errno;
- if (val != test) {
- ret = CA_ERROR_NOTSUPPORTED;
- goto finish_ret;
- }
+ if (val != test) {
+ ret = CA_ERROR_NOTSUPPORTED;
+ goto finish_ret;
+ }
- test = val = (int) ca_sound_file_get_rate(out->file);
- if (ioctl(out->pcm, SNDCTL_DSP_SPEED, &val) < 0)
- goto finish_errno;
+ test = val = (int) ca_sound_file_get_rate(out->file);
+ if (ioctl(out->pcm, SNDCTL_DSP_SPEED, &val) < 0)
+ goto finish_errno;
- /* Check to make sure the configured rate is close enough to the
- * requested rate. */
- if (fabs((double) (val - test)) > test * 0.05) {
- ret = CA_ERROR_NOTSUPPORTED;
- goto finish_ret;
- }
+ /* Check to make sure the configured rate is close enough to the
+ * requested rate. */
+ if (fabs((double) (val - test)) > test * 0.05) {
+ ret = CA_ERROR_NOTSUPPORTED;
+ goto finish_ret;
+ }
- return CA_SUCCESS;
+ return CA_SUCCESS;
finish_errno:
- return translate_error(errno);
+ return translate_error(errno);
finish_ret:
- return ret;
+ return ret;
}
#define BUFSIZE (4*1024)
static void* thread_func(void *userdata) {
- struct outstanding *out = userdata;
- int ret;
- void *data, *d = NULL;
- size_t fs, data_size;
- size_t nbytes = 0;
- struct pollfd pfd[2];
- nfds_t n_pfd = 2;
- struct private *p;
-
- p = PRIVATE(out->context);
-
- pthread_detach(pthread_self());
-
- fs = ca_sound_file_frame_size(out->file);
- data_size = (BUFSIZE/fs)*fs;
-
- if (!(data = ca_malloc(data_size))) {
- ret = CA_ERROR_OOM;
- goto finish;
- }
-
- pfd[0].fd = out->pipe_fd[0];
- pfd[0].events = POLLIN;
- pfd[0].revents = 0;
- pfd[1].fd = out->pcm;
- pfd[1].events = POLLOUT;
- pfd[1].revents = 0;
-
- for (;;) {
- ssize_t bytes_written;
-
- if (out->dead)
- break;
-
- if (poll(pfd, n_pfd, -1) < 0) {
- ret = CA_ERROR_SYSTEM;
- goto finish;
- }
+ struct outstanding *out = userdata;
+ int ret;
+ void *data, *d = NULL;
+ size_t fs, data_size;
+ size_t nbytes = 0;
+ struct pollfd pfd[2];
+ nfds_t n_pfd = 2;
+ struct private *p;
- /* We have been asked to shut down */
- if (pfd[0].revents)
- break;
+ p = PRIVATE(out->context);
- if (pfd[1].revents != POLLOUT) {
- ret = CA_ERROR_IO;
- goto finish;
- }
+ pthread_detach(pthread_self());
- if (nbytes <= 0) {
- nbytes = data_size;
+ fs = ca_sound_file_frame_size(out->file);
+ data_size = (BUFSIZE/fs)*fs;
- if ((ret = ca_sound_file_read_arbitrary(out->file, data, &nbytes)) < 0)
+ if (!(data = ca_malloc(data_size))) {
+ ret = CA_ERROR_OOM;
goto finish;
-
- d = data;
}
- if (nbytes <= 0)
- break;
+ pfd[0].fd = out->pipe_fd[0];
+ pfd[0].events = POLLIN;
+ pfd[0].revents = 0;
+ pfd[1].fd = out->pcm;
+ pfd[1].events = POLLOUT;
+ pfd[1].revents = 0;
- if ((bytes_written = write(out->pcm, d, nbytes)) <= 0) {
- ret = translate_error(errno);
- goto finish;
- }
+ for (;;) {
+ ssize_t bytes_written;
+
+ if (out->dead)
+ break;
+
+ if (poll(pfd, n_pfd, -1) < 0) {
+ ret = CA_ERROR_SYSTEM;
+ goto finish;
+ }
+
+ /* We have been asked to shut down */
+ if (pfd[0].revents)
+ break;
+
+ if (pfd[1].revents != POLLOUT) {
+ ret = CA_ERROR_IO;
+ goto finish;
+ }
+
+ if (nbytes <= 0) {
+ nbytes = data_size;
+
+ if ((ret = ca_sound_file_read_arbitrary(out->file, data, &nbytes)) < 0)
+ goto finish;
+
+ d = data;
+ }
+
+ if (nbytes <= 0)
+ break;
- nbytes -= (size_t) bytes_written;
- d = (uint8_t*) d + (size_t) bytes_written;
- }
+ if ((bytes_written = write(out->pcm, d, nbytes)) <= 0) {
+ ret = translate_error(errno);
+ goto finish;
+ }
- ret = CA_SUCCESS;
+ nbytes -= (size_t) bytes_written;
+ d = (uint8_t*) d + (size_t) bytes_written;
+ }
+
+ ret = CA_SUCCESS;
finish:
- ca_free(data);
+ ca_free(data);
- if (!out->dead)
- if (out->callback)
- out->callback(out->context, out->id, ret, out->userdata);
+ if (!out->dead)
+ if (out->callback)
+ out->callback(out->context, out->id, ret, out->userdata);
- ca_mutex_lock(p->outstanding_mutex);
+ ca_mutex_lock(p->outstanding_mutex);
- CA_LLIST_REMOVE(struct outstanding, p->outstanding, out);
+ CA_LLIST_REMOVE(struct outstanding, p->outstanding, out);
- if (!p->outstanding && p->signal_semaphore)
- sem_post(&p->semaphore);
+ if (!p->outstanding && p->signal_semaphore)
+ sem_post(&p->semaphore);
- outstanding_free(out);
+ outstanding_free(out);
- ca_mutex_unlock(p->outstanding_mutex);
+ ca_mutex_unlock(p->outstanding_mutex);
- return NULL;
+ return NULL;
}
int driver_play(ca_context *c, uint32_t id, ca_proplist *proplist, ca_finish_callback_t cb, void *userdata) {
- struct private *p;
- struct outstanding *out = NULL;
- int ret;
- pthread_t thread;
-
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(proplist, CA_ERROR_INVALID);
- ca_return_val_if_fail(!userdata || cb, CA_ERROR_INVALID);
- ca_return_val_if_fail(c->private, CA_ERROR_STATE);
-
- p = PRIVATE(c);
+ struct private *p;
+ struct outstanding *out = NULL;
+ int ret;
+ pthread_t thread;
- if (!(out = ca_new0(struct outstanding, 1))) {
- ret = CA_ERROR_OOM;
- goto finish;
- }
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(proplist, CA_ERROR_INVALID);
+ ca_return_val_if_fail(!userdata || cb, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c->private, CA_ERROR_STATE);
- out->context = c;
- out->id = id;
- out->callback = cb;
- out->userdata = userdata;
- out->pipe_fd[0] = out->pipe_fd[1] = -1;
- out->pcm = -1;
+ p = PRIVATE(c);
- if (pipe(out->pipe_fd) < 0) {
- ret = CA_ERROR_SYSTEM;
- goto finish;
- }
+ if (!(out = ca_new0(struct outstanding, 1))) {
+ ret = CA_ERROR_OOM;
+ goto finish;
+ }
- if ((ret = ca_lookup_sound(&out->file, NULL, &p->theme, c->props, proplist)) < 0)
- goto finish;
+ out->context = c;
+ out->id = id;
+ out->callback = cb;
+ out->userdata = userdata;
+ out->pipe_fd[0] = out->pipe_fd[1] = -1;
+ out->pcm = -1;
- if ((ret = open_oss(c, out)) < 0)
- goto finish;
+ if (pipe(out->pipe_fd) < 0) {
+ ret = CA_ERROR_SYSTEM;
+ goto finish;
+ }
- /* OK, we're ready to go, so let's add this to our list */
- ca_mutex_lock(p->outstanding_mutex);
- CA_LLIST_PREPEND(struct outstanding, p->outstanding, out);
- ca_mutex_unlock(p->outstanding_mutex);
+ if ((ret = ca_lookup_sound(&out->file, NULL, &p->theme, c->props, proplist)) < 0)
+ goto finish;
- if (pthread_create(&thread, NULL, thread_func, out) < 0) {
- ret = CA_ERROR_OOM;
+ if ((ret = open_oss(c, out)) < 0)
+ goto finish;
+ /* OK, we're ready to go, so let's add this to our list */
ca_mutex_lock(p->outstanding_mutex);
- CA_LLIST_REMOVE(struct outstanding, p->outstanding, out);
+ CA_LLIST_PREPEND(struct outstanding, p->outstanding, out);
ca_mutex_unlock(p->outstanding_mutex);
- goto finish;
- }
+ if (pthread_create(&thread, NULL, thread_func, out) < 0) {
+ ret = CA_ERROR_OOM;
- ret = CA_SUCCESS;
+ ca_mutex_lock(p->outstanding_mutex);
+ CA_LLIST_REMOVE(struct outstanding, p->outstanding, out);
+ ca_mutex_unlock(p->outstanding_mutex);
+
+ goto finish;
+ }
+
+ ret = CA_SUCCESS;
finish:
- /* We keep the outstanding struct around if we need clean up later to */
- if (ret != CA_SUCCESS)
- outstanding_free(out);
+ /* We keep the outstanding struct around if we need clean up later to */
+ if (ret != CA_SUCCESS)
+ outstanding_free(out);
- return ret;
+ return ret;
}
int driver_cancel(ca_context *c, uint32_t id) {
- struct private *p;
- struct outstanding *out;
+ struct private *p;
+ struct outstanding *out;
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(c->private, CA_ERROR_STATE);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c->private, CA_ERROR_STATE);
- p = PRIVATE(c);
+ p = PRIVATE(c);
- ca_mutex_lock(p->outstanding_mutex);
+ ca_mutex_lock(p->outstanding_mutex);
- for (out = p->outstanding; out; out = out->next) {
+ for (out = p->outstanding; out; out = out->next) {
- if (out->id != id)
- continue;
+ if (out->id != id)
+ continue;
- if (out->dead)
- continue;
+ if (out->dead)
+ continue;
- out->dead = TRUE;
+ out->dead = TRUE;
- if (out->callback)
- out->callback(c, out->id, CA_ERROR_CANCELED, out->userdata);
+ if (out->callback)
+ out->callback(c, out->id, CA_ERROR_CANCELED, out->userdata);
- /* This will cause the thread to wakeup and terminate */
- if (out->pipe_fd[1] >= 0) {
- close(out->pipe_fd[1]);
- out->pipe_fd[1] = -1;
+ /* This will cause the thread to wakeup and terminate */
+ if (out->pipe_fd[1] >= 0) {
+ close(out->pipe_fd[1]);
+ out->pipe_fd[1] = -1;
+ }
}
- }
- ca_mutex_unlock(p->outstanding_mutex);
+ ca_mutex_unlock(p->outstanding_mutex);
- return CA_SUCCESS;
+ return CA_SUCCESS;
}
int driver_playing(ca_context *c, uint32_t id, int *playing) {
- struct private *p;
- struct outstanding *out;
+ struct private *p;
+ struct outstanding *out;
- ca_return_val_if_fail(c, CA_ERROR_INVALID);
- ca_return_val_if_fail(c->private, CA_ERROR_STATE);
- ca_return_val_if_fail(playing, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c, CA_ERROR_INVALID);
+ ca_return_val_if_fail(c->private, CA_ERROR_STATE);
+ ca_return_val_if_fail(playing, CA_ERROR_INVALID);
- p = PRIVATE(c);
+ p = PRIVATE(c);
- *playing = 0;
+ *playing = 0;
- ca_mutex_lock(p->outstanding_mutex);
+ ca_mutex_lock(p->outstanding_mutex);
- for (out = p->outstanding; out; out = out->next) {
+ for (out = p->outstanding; out; out = out->next) {
- if (out->dead ||
- out->id != id)
- continue;
+ if (out->dead ||
+ out->id != id)
+ continue;
- *playing = 1;
- break;
- }
+ *playing = 1;
+ break;
+ }
- ca_mutex_unlock(p->outstanding_mutex);
+ ca_mutex_unlock(p->outstanding_mutex);
- return CA_SUCCESS;
+ return CA_SUCCESS;
}