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session: make a jack device

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Add a jack device and activate it when we release the device (for JACK
presumably). We need to work around some issues, jack does not allow
us to connect yet when it asks to release the device so we need to
wait a little and then connect.
This commit is contained in:
Wim Taymans 2019-10-21 16:39:08 +02:00
parent b3d72fb82d
commit 34a1a988ba
3 changed files with 88 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

87
src/examples/media-session/alsa-monitor.c
View file

@ -43,6 +43,8 @@
#include "reserve.c"
#define DEFAULT_JACK_SECONDS 1
struct alsa_object;
struct alsa_node {
@ -349,6 +351,21 @@ static int update_device_props(struct alsa_object *obj)
return 1;
}
static void set_jack_profile(struct impl *impl, int index)
{
char buf[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
if (impl->jack_device == NULL)
return;
pw_device_proxy_set_param((struct pw_device_proxy*)impl->jack_device,
SPA_PARAM_Profile, 0,
spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_ParamProfile, 0,
SPA_PARAM_PROFILE_index, SPA_POD_Int(index)));
}
static void set_profile(struct alsa_object *obj, int index)
{
char buf[1024];
@ -360,18 +377,53 @@ static void set_profile(struct alsa_object *obj, int index)
SPA_PARAM_PROFILE_index, SPA_POD_Int(index)));
}
static void remove_jack_timeout(struct impl *impl)
{
struct pw_loop *main_loop = pw_core_get_main_loop(impl->core);
if (impl->jack_timeout) {
pw_loop_destroy_source(main_loop, impl->jack_timeout);
impl->jack_timeout = NULL;
}
}
static void jack_timeout(void *data, uint64_t expirations)
{
struct impl *impl = data;
remove_jack_timeout(impl);
set_jack_profile(impl, 1);
}
static void add_jack_timeout(struct impl *impl)
{
struct timespec value;
struct pw_loop *main_loop = pw_core_get_main_loop(impl->core);
if (impl->jack_timeout == NULL)
impl->jack_timeout = pw_loop_add_timer(main_loop, jack_timeout, impl);
value.tv_sec = DEFAULT_JACK_SECONDS;
value.tv_nsec = 0;
pw_loop_update_timer(main_loop, impl->jack_timeout, &value, NULL, false);
}
static void reserve_acquired(void *data, struct rd_device *d)
{
struct alsa_object *obj = data;
struct monitor *monitor = obj->monitor;
struct impl *impl = monitor->impl;
pw_log_debug("%p: reserve acquired", obj);
remove_jack_timeout(impl);
set_jack_profile(impl, 0);
set_profile(obj, 1);
}
static void sync_complete_done(void *data, int seq)
{
struct alsa_object *obj = data;
struct monitor *monitor = obj->monitor;
struct impl *impl = monitor->impl;
if (seq != obj->seq)
return;
@ -380,6 +432,8 @@ static void sync_complete_done(void *data, int seq)
obj->seq = 0;
rd_device_complete_release(obj->reserve, true);
add_jack_timeout(impl);
}
static const struct pw_proxy_events sync_complete_release = {
@ -390,9 +444,12 @@ static const struct pw_proxy_events sync_complete_release = {
static void reserve_release(void *data, struct rd_device *d, int forced)
{
struct alsa_object *obj = data;
struct monitor *monitor = obj->monitor;
struct impl *impl = monitor->impl;
pw_log_debug("%p: reserve release", obj);
remove_jack_timeout(impl);
set_profile(obj, 0);
if (obj->seq == 0)
@ -467,7 +524,7 @@ static struct alsa_object *alsa_create_object(struct monitor *monitor, uint32_t
reserve = pw_properties_get(obj->props, "api.dbus.ReserveDevice1");
obj->reserve = rd_device_new(impl->conn, reserve,
"PipeWire", 0,
"PipeWire", 10,
&reserve_callbacks, obj);
if (obj->reserve == NULL) {
@ -559,11 +616,10 @@ static int alsa_start_midi_bridge(struct impl *impl)
&props->dict,
0);
if (impl->midi_bridge == NULL) {
if (impl->midi_bridge == NULL)
res = -errno;
}
return res;
return res;
}
static int alsa_start_monitor(struct impl *impl, struct monitor *monitor)
@ -598,3 +654,26 @@ static int alsa_start_monitor(struct impl *impl, struct monitor *monitor)
out:
return res;
}
static int alsa_start_jack_device(struct impl *impl)
{
struct pw_properties *props;
int res = 0;
props = pw_properties_new(
SPA_KEY_FACTORY_NAME, SPA_NAME_API_JACK_DEVICE,
SPA_KEY_NODE_NAME, "JACK-Device",
NULL);
impl->jack_device = pw_core_proxy_create_object(impl->core_proxy,
"spa-device-factory",
PW_TYPE_INTERFACE_Device,
PW_VERSION_DEVICE_PROXY,
&props->dict,
0);
if (impl->jack_device == NULL)
res = -errno;
return res;
}