Exemplo n.º 1
0
value type_num_str(value f)
	{
	if (!f->L) return 0;
	{
	value x = arg(f->R);
	if (x->T == type_num)
		f = reduce_str(f,num_str(get_num(x)));
	else
		f = reduce_void(f);
	drop(x);
	return f;
	}
	}
Exemplo n.º 2
0
value type_num_str(value f)
	{
	if (!f->L) return 0;
	{
	value x = arg(f->R);
	if (x->T == type_num)
		f = Qstr(num_str(get_num(x)));
	else
		f = hold(Qvoid);
	drop(x);
	return f;
	}
	}
Exemplo n.º 3
0
static int get_control(snd_ctl_t *handle, snd_ctl_elem_id_t *id, snd_config_t *top)
{
	snd_ctl_elem_value_t *ctl;
	snd_ctl_elem_info_t *info;
	snd_config_t *control, *comment, *item, *value;
	const char *s;
	char buf[256];
	unsigned int idx;
	int err;
	unsigned int device, subdevice, index;
	const char *name;
	snd_ctl_elem_type_t type;
	unsigned int count;
	snd_ctl_elem_value_alloca(&ctl);
	snd_ctl_elem_info_alloca(&info);
	snd_ctl_elem_info_set_id(info, id);
	err = snd_ctl_elem_info(handle, info);
	if (err < 0) {
		error("Cannot read control info '%s': %s", id_str(id), snd_strerror(err));
		return err;
	}

	if (snd_ctl_elem_info_is_inactive(info) ||
				!snd_ctl_elem_info_is_readable(info))
		return 0;
	snd_ctl_elem_value_set_id(ctl, id);
	err = snd_ctl_elem_read(handle, ctl);
	if (err < 0) {
		error("Cannot read control '%s': %s", id_str(id), snd_strerror(err));
		return err;
	}

	err = snd_config_compound_add(top, num_str(snd_ctl_elem_info_get_numid(info)), 0, &control);
	if (err < 0) {
		error("snd_config_compound_add: %s", snd_strerror(err));
		return err;
	}
	err = snd_config_compound_add(control, "comment", 1, &comment);
	if (err < 0) {
		error("snd_config_compound_add: %s", snd_strerror(err));
		return err;
	}

	buf[0] = '\0';
	buf[1] = '\0';
	if (snd_ctl_elem_info_is_readable(info))
		strcat(buf, " read");
	if (snd_ctl_elem_info_is_writable(info))
		strcat(buf, " write");
	if (snd_ctl_elem_info_is_inactive(info))
		strcat(buf, " inactive");
	if (snd_ctl_elem_info_is_volatile(info))
		strcat(buf, " volatile");
	if (snd_ctl_elem_info_is_locked(info))
		strcat(buf, " locked");
	if (snd_ctl_elem_info_is_user(info))
		strcat(buf, " user");
	err = snd_config_string_add(comment, "access", buf + 1);
	if (err < 0) {
		error("snd_config_string_add: %s", snd_strerror(err));
		return err;
	}

	type = snd_ctl_elem_info_get_type(info);
	device = snd_ctl_elem_info_get_device(info);
	subdevice = snd_ctl_elem_info_get_subdevice(info);
	index = snd_ctl_elem_info_get_index(info);
	name = snd_ctl_elem_info_get_name(info);
	count = snd_ctl_elem_info_get_count(info);
	s = snd_ctl_elem_type_name(type);
	err = snd_config_string_add(comment, "type", s);
	if (err < 0) {
		error("snd_config_string_add: %s", snd_strerror(err));
		return err;
	}
	err = snd_config_integer_add(comment, "count", count);
	if (err < 0) {
		error("snd_config_integer_add: %s", snd_strerror(err));
		return err;
	}

	switch (type) {
	case SND_CTL_ELEM_TYPE_BOOLEAN:
		break;
	case SND_CTL_ELEM_TYPE_INTEGER:
	{
		long min = snd_ctl_elem_info_get_min(info);
		long max = snd_ctl_elem_info_get_max(info);
		long step = snd_ctl_elem_info_get_step(info);
		if (step)
			sprintf(buf, "%li - %li (step %li)", min, max, step);
		else
			sprintf(buf, "%li - %li", min, max);
		err = snd_config_string_add(comment, "range", buf);
		if (err < 0) {
			error("snd_config_string_add: %s", snd_strerror(err));
			return err;
		}
		if (snd_ctl_elem_info_is_tlv_readable(info)) {
			err = add_tlv_comments(handle, id, info, comment);
			if (err < 0)
				return err;
		}
		break;
	}
	case SND_CTL_ELEM_TYPE_INTEGER64:
	{
		long long min = snd_ctl_elem_info_get_min64(info);
		long long max = snd_ctl_elem_info_get_max64(info);
		long long step = snd_ctl_elem_info_get_step64(info);
		if (step)
			sprintf(buf, "%Li - %Li (step %Li)", min, max, step);
		else
			sprintf(buf, "%Li - %Li", min, max);
		err = snd_config_string_add(comment, "range", buf);
		if (err < 0) {
			error("snd_config_string_add: %s", snd_strerror(err));
			return err;
		}
		break;
	}
	case SND_CTL_ELEM_TYPE_ENUMERATED:
	{
		unsigned int items;
		err = snd_config_compound_add(comment, "item", 1, &item);
		if (err < 0) {
			error("snd_config_compound_add: %s", snd_strerror(err));
			return err;
		}
		items = snd_ctl_elem_info_get_items(info);
		for (idx = 0; idx < items; idx++) {
			snd_ctl_elem_info_set_item(info, idx);
			err = snd_ctl_elem_info(handle, info);
			if (err < 0) {
				error("snd_ctl_card_info: %s", snd_strerror(err));
				return err;
			}
			err = snd_config_string_add(item, num_str(idx), snd_ctl_elem_info_get_item_name(info));
			if (err < 0) {
				error("snd_config_string_add: %s", snd_strerror(err));
				return err;
			}
		}
		break;
	}
	default:
		break;
	}
	s = snd_ctl_elem_iface_name(snd_ctl_elem_info_get_interface(info));
	err = snd_config_string_add(control, "iface", s);
	if (err < 0) {
		error("snd_config_string_add: %s", snd_strerror(err));
		return err;
	}
	if (device != 0) {
		err = snd_config_integer_add(control, "device", device);
		if (err < 0) {
			error("snd_config_integer_add: %s", snd_strerror(err));
			return err;
		}
	}
	if (subdevice != 0) {
		err = snd_config_integer_add(control, "subdevice", subdevice);
		if (err < 0) {
			error("snd_config_integer_add: %s", snd_strerror(err));
			return err;
		}
	}
	err = snd_config_string_add(control, "name", name);
	if (err < 0) {
		error("snd_config_string_add: %s", snd_strerror(err));
		return err;
	}
	if (index != 0) {
		err = snd_config_integer_add(control, "index", index);
		if (err < 0) {
			error("snd_config_integer_add: %s", snd_strerror(err));
			return err;
		}
	}

	switch (type) {
	case SND_CTL_ELEM_TYPE_BYTES:
	case SND_CTL_ELEM_TYPE_IEC958:
	{
		size_t size = type == SND_CTL_ELEM_TYPE_BYTES ?
			count : sizeof(snd_aes_iec958_t);
		char buf[size * 2 + 1];
		char *p = buf;
		char *hex = "0123456789abcdef";
		const unsigned char *bytes = 
		  (const unsigned char *)snd_ctl_elem_value_get_bytes(ctl);
		for (idx = 0; idx < size; idx++) {
			int v = bytes[idx];
			*p++ = hex[v >> 4];
			*p++ = hex[v & 0x0f];
		}
		*p = '\0';
		err = snd_config_string_add(control, "value", buf);
		if (err < 0) {
			error("snd_config_string_add: %s", snd_strerror(err));
			return err;
		}
		return 0;
	}
	default:
		break;
	}

	if (count == 1) {
		switch (type) {
		case SND_CTL_ELEM_TYPE_BOOLEAN:
			err = snd_config_string_add(control, "value", snd_ctl_elem_value_get_boolean(ctl, 0) ? "true" : "false");
			if (err < 0) {
				error("snd_config_string_add: %s", snd_strerror(err));
				return err;
			}
			return 0;
		case SND_CTL_ELEM_TYPE_INTEGER:
			err = snd_config_integer_add(control, "value", snd_ctl_elem_value_get_integer(ctl, 0));
			if (err < 0) {
				error("snd_config_integer_add: %s", snd_strerror(err));
				return err;
			}
			return 0;
		case SND_CTL_ELEM_TYPE_INTEGER64:
			err = snd_config_integer64_add(control, "value", snd_ctl_elem_value_get_integer64(ctl, 0));
			if (err < 0) {
				error("snd_config_integer64_add: %s", snd_strerror(err));
				return err;
			}
			return 0;
		case SND_CTL_ELEM_TYPE_ENUMERATED:
		{
			unsigned int v = snd_ctl_elem_value_get_enumerated(ctl, 0);
			snd_config_t *c;
			err = snd_config_search(item, num_str(v), &c);
			if (err == 0) {
				err = snd_config_get_string(c, &s);
				assert(err == 0);
				err = snd_config_string_add(control, "value", s);
			} else {
				err = snd_config_integer_add(control, "value", v);
			}
			if (err < 0)
				error("snd_config add: %s", snd_strerror(err));
			return 0;
		}
		default:
			error("Unknown control type: %d\n", type);
			return -EINVAL;
		}
	}

	err = snd_config_compound_add(control, "value", 1, &value);
	if (err < 0) {
		error("snd_config_compound_add: %s", snd_strerror(err));
		return err;
	}

	switch (type) {
	case SND_CTL_ELEM_TYPE_BOOLEAN:
		for (idx = 0; idx < count; idx++) {
			err = snd_config_string_add(value, num_str(idx), snd_ctl_elem_value_get_boolean(ctl, idx) ? "true" : "false");
			if (err < 0) {
				error("snd_config_string_add: %s", snd_strerror(err));
				return err;
			}
		}
		break;
	case SND_CTL_ELEM_TYPE_INTEGER:
		for (idx = 0; idx < count; idx++) {
			err = snd_config_integer_add(value, num_str(idx), snd_ctl_elem_value_get_integer(ctl, idx));
			if (err < 0) {
				error("snd_config_integer_add: %s", snd_strerror(err));
				return err;
			}
		}
		break;
	case SND_CTL_ELEM_TYPE_INTEGER64:
		for (idx = 0; idx < count; idx++) {
			err = snd_config_integer64_add(value, num_str(idx), snd_ctl_elem_value_get_integer64(ctl, idx));
			if (err < 0) {
				error("snd_config_integer64_add: %s", snd_strerror(err));
				return err;
			}
		}
		break;
	case SND_CTL_ELEM_TYPE_ENUMERATED:
		for (idx = 0; idx < count; idx++) {
			unsigned int v = snd_ctl_elem_value_get_enumerated(ctl, idx);
			snd_config_t *c;
			err = snd_config_search(item, num_str(v), &c);
			if (err == 0) {
				err = snd_config_get_string(c, &s);
				assert(err == 0);
				err = snd_config_string_add(value, num_str(idx), s);
			} else {
				err = snd_config_integer_add(value, num_str(idx), v);
			}
			if (err < 0) {
				error("snd_config add: %s", snd_strerror(err));
				return err;
			}
		}
		break;
	default:
		error("Unknown control type: %d\n", type);
		return -EINVAL;
	}
	
	return 0;
}