C++ (Cpp) ca_context_change_device Beispiele

Beispiel #1

Datei: player.c Projekt: linuxdeepin/go-lib

static ca_context*
connect_canberra_context(char* device, char* driver)
{
	ca_context* ca = NULL;
	if (ca_context_create(&ca) != 0) {
		g_warning("Create canberra context failed");
		return NULL;
	}

	// set backend driver
	if (strlen(driver) > 0) {
		if (ca_context_set_driver(ca, driver) != 0 ) {
			g_warning("Set '%s' as backend driver failed", driver);
			ca_context_destroy(ca);
			return NULL;
		}
	}

	if (strlen(device) > 0) {
		if (ca_context_change_device(ca, device) != 0) {
			g_warning("Set '%s' as backend device failed", device);
			ca_context_destroy(ca);
			return NULL;
		}
	}

	if (ca_context_open(ca) != 0) {
		g_warning("Connect the context to sound system failed");
		ca_context_destroy(ca);
		return NULL;
	}

	return ca;
}

Beispiel #2

Datei: common.c Projekt: Ecstalionos/libcanberra-vizaudio

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;
}