1 files changed, 10 insertions, 8 deletions
diff --git a/audio/out/ao_jack.c b/audio/out/ao_jack.c
index 767f437895..412e91d626 100644
--- a/audio/out/ao_jack.c
+++ b/audio/out/ao_jack.c
@@ -22,6 +22,7 @@
  * with mpv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <stdatomic.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -33,7 +34,6 @@
 #include "ao.h"
 #include "internal.h"
 #include "audio/format.h"
-#include "osdep/atomic.h"
 #include "osdep/timer.h"
 #include "options/m_config.h"
 #include "options/m_option.h"
@@ -47,8 +47,8 @@
 struct jack_opts {
     char *port;
     char *client_name;
-    int connect;
-    int autostart;
+    bool connect;
+    bool autostart;
     int stdlayout;
 };
 
@@ -57,15 +57,15 @@ static const struct m_sub_options ao_jack_conf = {
     .opts = (const struct m_option[]){
         {"jack-port", OPT_STRING(port)},
         {"jack-name", OPT_STRING(client_name)},
-        {"jack-autostart", OPT_FLAG(autostart)},
-        {"jack-connect", OPT_FLAG(connect)},
+        {"jack-autostart", OPT_BOOL(autostart)},
+        {"jack-connect", OPT_BOOL(connect)},
         {"jack-std-channel-layout", OPT_CHOICE(stdlayout,
             {"waveext", 0}, {"any", 1})},
         {0}
     },
     .defaults = &(const struct jack_opts) {
         .client_name = "mpv",
-        .connect = 1,
+        .connect = true,
     },
     .size = sizeof(struct jack_opts),
 };
@@ -122,8 +122,8 @@ static int process(jack_nframes_t nframes, void *arg)
     jack_nframes_t jack_latency =
         atomic_load(&p->graph_latency_max) + atomic_load(&p->buffer_size);
 
-    int64_t end_time = mp_time_us();
-    end_time += (jack_latency + nframes) / (double)ao->samplerate * 1000000.0;
+    int64_t end_time = mp_time_ns();
+    end_time += MP_TIME_S_TO_NS((jack_latency + nframes) / (double)ao->samplerate);
 
     ao_read_data(ao, buffers, nframes, end_time);
 
@@ -246,6 +246,8 @@ static int init(struct ao *ao)
     jack_set_process_callback(p->client, process, ao);
 
     ao->samplerate = jack_get_sample_rate(p->client);
+    // The actual device buffer can change, but this is enough for pre-buffer
+    ao->device_buffer = jack_get_buffer_size(p->client);
 
     jack_set_buffer_size_callback(p->client, buffer_size_cb, ao);
     jack_set_graph_order_callback(p->client, graph_order_cb, ao);