mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-10-31 22:25:38 -04:00
1da23145df
Using a probe connection to determine adapter msbc capability causes problems on some adapters (ff8c3d2,84bc0490a5,717004334b, pipewire#2030) and seems to be a bad idea. Go back to probing for transparent msbc transport capability via HCI commands. bluetooth/hci.h may be deprecated later, but for now it's better to go back to using it. (In practice, adapters not supporting esco appear to be fairly rare; kernel commit in 2013 refers to "older devices", so if we can't use HCI, assume the adapter supports the necessary modes.)
93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/* Spa HSP/HFP native backend HCI support
|
|
*
|
|
* Copyright © 2022 Pauli Virtanen
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <poll.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include "defs.h"
|
|
|
|
#ifndef HAVE_BLUEZ_5_HCI
|
|
|
|
int spa_bt_adapter_has_msbc(struct spa_bt_adapter *adapter)
|
|
{
|
|
if (adapter->msbc_probed)
|
|
return adapter->has_msbc;
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
#else
|
|
|
|
#include <bluetooth/bluetooth.h>
|
|
#include <bluetooth/hci.h>
|
|
#include <bluetooth/hci_lib.h>
|
|
|
|
int spa_bt_adapter_has_msbc(struct spa_bt_adapter *adapter)
|
|
{
|
|
int hci_id, res;
|
|
int sock = -1;
|
|
uint8_t features[8], max_page = 0;
|
|
struct sockaddr_hci a;
|
|
const char *str;
|
|
|
|
if (adapter->msbc_probed)
|
|
return adapter->has_msbc;
|
|
|
|
str = strrchr(adapter->path, '/'); /* hciXX */
|
|
if (str == NULL || sscanf(str, "/hci%d", &hci_id) != 1 || hci_id < 0)
|
|
return -ENOENT;
|
|
|
|
sock = socket(AF_BLUETOOTH, SOCK_RAW | SOCK_CLOEXEC, BTPROTO_HCI);
|
|
if (sock < 0)
|
|
goto error;
|
|
|
|
memset(&a, 0, sizeof(a));
|
|
a.hci_family = AF_BLUETOOTH;
|
|
a.hci_dev = hci_id;
|
|
if (bind(sock, (struct sockaddr *) &a, sizeof(a)) < 0)
|
|
goto error;
|
|
|
|
if (hci_read_local_ext_features(sock, 0, &max_page, features, 1000) < 0)
|
|
goto error;
|
|
|
|
close(sock);
|
|
|
|
adapter->msbc_probed = true;
|
|
adapter->has_msbc = ((features[2] & LMP_TRSP_SCO) && (features[3] & LMP_ESCO)) ? 1 : 0;
|
|
return adapter->has_msbc;
|
|
|
|
error:
|
|
res = -errno;
|
|
if (sock >= 0)
|
|
close(sock);
|
|
return res;
|
|
}
|
|
|
|
#endif
|