/**
* ca_context_change_device:
* @c: the context to change the backend device for
* @device: the backend device to use, in a format that is specific to the backend.
*
* Specify the backend device to use. This function may be called not be called after
* ca_context_open() suceeded. This function might suceed even when
* the specified driver backend is not available. Use
* ca_context_open() to find out whether the backend is available
*
* Depending on the backend use this might or might not cause all
* currently playing event sounds to be moved to the new device..
*
* Returns: 0 on success, negative error code on error.
*/
int ca_context_change_device(ca_context *c, const char *device) {
char *n;
int ret;
ca_return_val_if_fail(!ca_detect_fork(), CA_ERROR_FORKED);
ca_return_val_if_fail(c, CA_ERROR_INVALID);
ca_mutex_lock(c->mutex);
if (!device)
n = NULL;
else if (!(n = ca_strdup(device))) {
ret = CA_ERROR_OOM;
goto fail;
}
ret = c->opened ? driver_change_device(c, n) : CA_SUCCESS;
if (ret == CA_SUCCESS) {
ca_free(c->device);
c->device = n;
} else
ca_free(n);
fail:
ca_mutex_unlock(c->mutex);
return ret;
}
/**
* ca_context_set_driver:
* @c: the context to change the backend driver for
* @driver: the backend driver to use (e.g. "alsa", "pulse", "null", ...)
*
* Specify the backend driver used. This function may not be called again after
* ca_context_open() suceeded. This function might suceed even when
* the specified driver backend is not available. Use
* ca_context_open() to find out whether the backend is available.
*
* Returns: 0 on success, negative error code on error.
*/
int ca_context_set_driver(ca_context *c, const char *driver) {
char *n;
int ret;
ca_return_val_if_fail(!ca_detect_fork(), CA_ERROR_FORKED);
ca_return_val_if_fail(c, CA_ERROR_INVALID);
ca_mutex_lock(c->mutex);
ca_return_val_if_fail_unlock(!c->opened, CA_ERROR_STATE, c->mutex);
if (!driver)
n = NULL;
else if (!(n = ca_strdup(driver))) {
ret = CA_ERROR_OOM;
goto fail;
}
ca_free(c->driver);
c->driver = n;
ret = CA_SUCCESS;
fail:
ca_mutex_unlock(c->mutex);
return ret;
}
int ca_sound_file_open(ca_sound_file **_f, const char *fn) {
FILE *file;
ca_sound_file *f;
int ret;
ca_return_val_if_fail(_f, CA_ERROR_INVALID);
ca_return_val_if_fail(fn, CA_ERROR_INVALID);
if (!(f = ca_new0(ca_sound_file, 1)))
return CA_ERROR_OOM;
if (!(f->filename = ca_strdup(fn))) {
ret = CA_ERROR_OOM;
goto fail;
}
if (!(file = fopen(fn, "r"))) {
ret = errno == ENOENT ? CA_ERROR_NOTFOUND : CA_ERROR_SYSTEM;
goto fail;
}
if ((ret = ca_wav_open(&f->wav, file)) == CA_SUCCESS) {
f->nchannels = ca_wav_get_nchannels(f->wav);
f->rate = ca_wav_get_rate(f->wav);
f->type = ca_wav_get_sample_type(f->wav);
*_f = f;
return CA_SUCCESS;
}
if (ret == CA_ERROR_CORRUPT) {
if (fseek(file, 0, SEEK_SET) < 0) {
ret = CA_ERROR_SYSTEM;
goto fail;
}
if ((ret = ca_vorbis_open(&f->vorbis, file)) == CA_SUCCESS) {
f->nchannels = ca_vorbis_get_nchannels(f->vorbis);
f->rate = ca_vorbis_get_rate(f->vorbis);
f->type = CA_SAMPLE_S16NE;
*_f = f;
return CA_SUCCESS;
}
}
fail:
ca_free(f->filename);
ca_free(f);
return ret;
}
