*/
#include <errno.h>
+#include <pthread.h>
+#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
#include <hardware/audio.h>
#include <hardware/hardware.h>
+#include "audio-msg.h"
#include "hal-log.h"
+static int audio_sk = -1;
+static bool close_thread = false;
+
+static pthread_t ipc_th = 0;
+static pthread_mutex_t close_mutex = PTHREAD_MUTEX_INITIALIZER;
+
struct a2dp_audio_dev {
struct audio_hw_device dev;
struct audio_stream_out *out;
static int audio_close(hw_device_t *device)
{
+ struct a2dp_audio_dev *a2dp_dev = (struct a2dp_audio_dev *)device;
+
DBG("");
- free(device);
+
+ pthread_mutex_lock(&close_mutex);
+ shutdown(audio_sk, SHUT_RDWR);
+ close_thread = true;
+ pthread_mutex_unlock(&close_mutex);
+
+ pthread_join(ipc_th, NULL);
+
+ free(a2dp_dev);
return 0;
}
+static bool create_audio_ipc(void)
+{
+ struct sockaddr_un addr;
+ int err;
+ int sk;
+
+ DBG("");
+
+ sk = socket(PF_LOCAL, SOCK_SEQPACKET, 0);
+ if (sk < 0) {
+ err = errno;
+ error("Failed to create socket: %d (%s)", err, strerror(err));
+ return false;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+
+ memcpy(addr.sun_path, BLUEZ_AUDIO_SK_PATH,
+ sizeof(BLUEZ_AUDIO_SK_PATH));
+
+ if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ err = errno;
+ error("Failed to bind socket: %d (%s)", err, strerror(err));
+ goto failed;
+ }
+
+ if (listen(sk, 1) < 0) {
+ err = errno;
+ error("Failed to listen on the socket: %d (%s)", err,
+ strerror(err));
+ goto failed;
+ }
+
+ audio_sk = accept(sk, NULL, NULL);
+ if (audio_sk < 0) {
+ err = errno;
+ error("Failed to accept socket: %d (%s)", err, strerror(err));
+ goto failed;
+ }
+
+ close(sk);
+ return true;
+
+failed:
+ close(sk);
+ return false;
+}
+
+static void *ipc_handler(void *data)
+{
+ bool done = false;
+ struct pollfd pfd;
+
+ DBG("");
+
+ while (!done) {
+ if(!create_audio_ipc()) {
+ error("Failed to create listening socket");
+ sleep(1);
+ continue;
+ }
+
+ DBG("Audio IPC: Connected");
+
+ /* TODO: Register ENDPOINT here */
+
+ memset(&pfd, 0, sizeof(pfd));
+ pfd.fd = audio_sk;
+ pfd.events = POLLHUP | POLLERR | POLLNVAL;
+
+ /* Check if socket is still alive. Empty while loop.*/
+ while (poll(&pfd, 1, -1) < 0 && errno == EINTR);
+
+ if (pfd.revents & (POLLHUP | POLLERR | POLLNVAL)) {
+ info("Audio HAL: Socket closed");
+ audio_sk = -1;
+ }
+
+ /*Check if audio_dev is closed */
+ pthread_mutex_lock(&close_mutex);
+ done = close_thread;
+ close_thread = false;
+ pthread_mutex_unlock(&close_mutex);
+ }
+
+ info("Closing bluetooth_watcher thread");
+ return NULL;
+}
+
static int audio_open(const hw_module_t *module, const char *name,
hw_device_t **device)
{
struct a2dp_audio_dev *a2dp_dev;
+ int err;
DBG("");
* audio_hw_device. We will rely on this later in the code.*/
*device = &a2dp_dev->dev.common;
+ err = pthread_create(&ipc_th, NULL, ipc_handler, NULL);
+ if (err < 0) {
+ ipc_th = 0;
+ error("Failed to start Audio IPC thread: %d (%s)",
+ -err, strerror(-err));
+ return (-err);
+ }
+
return 0;
}