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;
}
int ca_vorbis_open(ca_vorbis **_v, FILE *f) {
int ret, or;
ca_vorbis *v;
int64_t n;
ca_return_val_if_fail(_v, CA_ERROR_INVALID);
ca_return_val_if_fail(f, CA_ERROR_INVALID);
if (!(v = ca_new0(ca_vorbis, 1)))
return CA_ERROR_OOM;
if ((or = ov_open(f, &v->ovf, NULL, 0)) < 0) {
ret = convert_error(or);
goto fail;
}
if ((n = ov_pcm_total(&v->ovf, -1)) < 0) {
ret = convert_error(or);
ov_clear(&v->ovf);
goto fail;
}
if (((off_t) n * (off_t) sizeof(int16_t)) > FILE_SIZE_MAX) {
ret = CA_ERROR_TOOBIG;
ov_clear(&v->ovf);
goto fail;
}
v->size = (off_t) n * (off_t) sizeof(int16_t) * ca_vorbis_get_nchannels(v);
*_v = v;
return CA_SUCCESS;
fail:
ca_free(v);
return ret;
}
int ca_context_create(ca_context **_c) {
ca_context *c;
int ret;
const char *d;
ca_return_val_if_fail(!ca_detect_fork(), CA_ERROR_FORKED);
ca_return_val_if_fail(_c, CA_ERROR_INVALID);
if (!(c = ca_new0(ca_context, 1)))
return CA_ERROR_OOM;
if (!(c->mutex = ca_mutex_new())) {
ca_context_destroy(c);
return CA_ERROR_OOM;
}
if ((ret = ca_proplist_create(&c->props)) < 0) {
ca_context_destroy(c);
return ret;
}
if ((d = getenv("CANBERRA_DRIVER"))) {
if ((ret = ca_context_set_driver(c, d)) < 0) {
ca_context_destroy(c);
return ret;
}
}
if ((d = getenv("CANBERRA_DEVICE"))) {
if ((ret = ca_context_change_device(c, d)) < 0) {
ca_context_destroy(c);
return ret;
}
}
*_c = c;
return CA_SUCCESS;
}
