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media-session: start the midi bridge from the session

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This commit is contained in:
Wim Taymans 2019-10-02 21:12:42 +02:00
parent 0a6ad1adec
commit fb95e7660a
6 changed files with 41 additions and 10 deletions
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10
spa/include/spa/utils/names.h
View file

@ -83,9 +83,13 @@ extern "C" {
* capturing PCM */
#define SPA_NAME_API_ALSA_PCM_SINK "api.alsa.pcm.sink" /**< an alsa Node interface for
* playback PCM */
#define SPA_NAME_API_ALSA_MIDI_DEVICE "api.alsa.midi.device" /**< an alsa Midi device */
#define SPA_NAME_API_ALSA_MIDI_SOURCE "api.alsa.midi.source" /**< an alsa Node interface for
* capturing midi */
#define SPA_NAME_API_ALSA_SEQ_DEVICE "api.alsa.seq.device" /**< an alsa Midi device */
#define SPA_NAME_API_ALSA_SEQ_SOURCE "api.alsa.seq.source" /**< an alsa Node interface for
* capture of midi */
#define SPA_NAME_API_ALSA_SEQ_SINK "api.alsa.seq.sink" /**< an alsa Node interface for
* playback of midi */
#define SPA_NAME_API_ALSA_SEQ_BRIDGE "api.alsa.seq.bridge" /**< an alsa Node interface for
* bridging midi ports */
/** keys for bluez5 factory names */
#define SPA_NAME_API_BLUEZ5_ENUM_DBUS "api.bluez5.enum.dbus" /**< a dbus Device interface */

8
spa/plugins/alsa/alsa-seq-source.c
View file

@ -36,7 +36,7 @@
#include <spa/param/audio/format.h>
#include <spa/pod/filter.h>
#define NAME "alsa-source"
#define NAME "alsa-bridge"
#include "alsa-seq.h"
@ -946,15 +946,15 @@ impl_enum_interface_info(const struct spa_handle_factory *factory,
static const struct spa_dict_item info_items[] = {
{ SPA_KEY_FACTORY_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" },
{ SPA_KEY_FACTORY_DESCRIPTION, "Record midi with the alsa API" },
{ SPA_KEY_FACTORY_DESCRIPTION, "Bridge midi ports with the alsa sequencer API" },
{ SPA_KEY_FACTORY_USAGE, "["SPA_KEY_API_ALSA_PATH"=<device>]" },
};
static const struct spa_dict info = SPA_DICT_INIT_ARRAY(info_items);
const struct spa_handle_factory spa_alsa_midi_source_factory = {
const struct spa_handle_factory spa_alsa_seq_bridge_factory = {
SPA_VERSION_HANDLE_FACTORY,
SPA_NAME_API_ALSA_MIDI_SOURCE,
SPA_NAME_API_ALSA_SEQ_BRIDGE,
&info,
impl_get_size,
impl_init,

4
spa/plugins/alsa/alsa.c
View file

@ -30,7 +30,7 @@ extern const struct spa_handle_factory spa_alsa_source_factory;
extern const struct spa_handle_factory spa_alsa_sink_factory;
extern const struct spa_handle_factory spa_alsa_udev_factory;
extern const struct spa_handle_factory spa_alsa_device_factory;
extern const struct spa_handle_factory spa_alsa_midi_source_factory;
extern const struct spa_handle_factory spa_alsa_seq_bridge_factory;
SPA_EXPORT
int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index)
@ -52,7 +52,7 @@ int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t
*factory = &spa_alsa_device_factory;
break;
case 4:
*factory = &spa_alsa_midi_source_factory;
*factory = &spa_alsa_seq_bridge_factory;
break;
default:
return 0;

2
src/daemon/pipewire.conf.in
View file

@ -12,7 +12,7 @@ add-spa-lib api.jack.* jack/libspa-jack
#load-module libpipewire-module-spa-device api.jack.device
#load-module libpipewire-module-spa-device api.alsa.enum.udev
load-module libpipewire-module-spa-node api.alsa.midi.source node.name=MIDI-Bridge
#load-module libpipewire-module-spa-node api.alsa.seq.bridge node.name=MIDI-Bridge
load-module libpipewire-module-rtkit
load-module libpipewire-module-protocol-native
load-module libpipewire-module-spa-node-factory

24
src/examples/media-session/alsa-monitor.c
View file

@ -522,6 +522,30 @@ static const struct spa_device_events alsa_udev_events =
.object_info = alsa_udev_object_info,
};
static int alsa_start_midi_bridge(struct impl *impl)
{
struct pw_properties *props;
int res = 0;
props = pw_properties_new(
SPA_KEY_FACTORY_NAME, SPA_NAME_API_ALSA_SEQ_BRIDGE,
SPA_KEY_NODE_NAME, "Midi-Bridge",
NULL);
impl->midi_bridge = pw_core_proxy_create_object(impl->core_proxy,
"spa-node-factory",
PW_TYPE_INTERFACE_Node,
PW_VERSION_NODE_PROXY,
&props->dict,
0);
if (impl->midi_bridge == NULL) {
res = -errno;
}
return res;
}
static int alsa_start_monitor(struct impl *impl, struct monitor *monitor)
{
struct spa_handle *handle;

3
src/examples/media-session/media-session.c
View file

@ -93,6 +93,8 @@ struct impl {
struct spa_dbus *dbus;
struct spa_dbus_connection *dbus_connection;
DBusConnection *conn;
struct pw_proxy *midi_bridge;
};
struct object {
@ -1227,6 +1229,7 @@ static void start_services(struct impl *impl)
bluez5_start_monitor(impl, &impl->bluez5_monitor);
alsa_start_monitor(impl, &impl->alsa_monitor);
alsa_start_midi_bridge(impl);
v4l2_start_monitor(impl, &impl->v4l2_monitor);
}