node manager: adding external node manager API

6 files changed, 460 insertions, 0 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index 60804c10..c1d4f2ca 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -671,6 +671,7 @@ pulseinclude_HEADERS = \
 		pulse/ext-device-manager.h \
 		pulse/ext-device-restore.h \
 		pulse/ext-stream-restore.h \
+		pulse/ext-node-manager.h \
 		pulse/format.h \
 		pulse/gccmacro.h \
 		pulse/introspect.h \
@@ -722,6 +723,7 @@ libpulse_la_SOURCES = \
 		pulse/ext-device-manager.c pulse/ext-device-manager.h \
 		pulse/ext-device-restore.c pulse/ext-device-restore.h \
 		pulse/ext-stream-restore.c pulse/ext-stream-restore.h \
+		pulse/ext-node-manager.c pulse/ext-node-manager.h \
 		pulse/format.c pulse/format.h \
 		pulse/gccmacro.h \
 		pulse/internal.h \
diff --git a/src/map-file b/src/map-file
index 8a005fc4..7ed61bbd 100644
--- a/src/map-file
+++ b/src/map-file
@@ -168,6 +168,12 @@ pa_ext_stream_restore_test;
 pa_ext_stream_restore_write;
 pa_ext_policy_test;
 pa_ext_policy_set_mono;
+pa_ext_node_manager_test;
+pa_ext_node_manager_read_nodes;
+pa_ext_node_manager_connect_nodes;
+pa_ext_node_manager_disconnect_nodes;
+pa_ext_node_manager_subscribe;
+pa_ext_node_manager_set_subscribe_cb;
 pa_format_info_copy;
 pa_format_info_free;
 pa_format_info_free2;
diff --git a/src/pulse/context.c b/src/pulse/context.c
index 5bd3448b..e76ca24d 100644
--- a/src/pulse/context.c
+++ b/src/pulse/context.c
@@ -122,6 +122,9 @@ static void reset_callbacks(pa_context *c) {
 
     c->ext_stream_restore.callback = NULL;
     c->ext_stream_restore.userdata = NULL;
+
+    c->ext_node_manager.callback = NULL;
+    c->ext_node_manager.userdata = NULL;
 }
 
 pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *name, pa_proplist *p) {
@@ -1431,6 +1434,8 @@ void pa_command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_t
         pa_ext_device_restore_command(c, tag, t);
     else if (pa_streq(name, "module-stream-restore"))
         pa_ext_stream_restore_command(c, tag, t);
+    else if (pa_streq(name, "module-node-manager"))
+        pa_ext_node_manager_command(c, tag, t);
     else
         pa_log(_("Received message for unknown extension '%s'"), name);
 
diff --git a/src/pulse/ext-node-manager.c b/src/pulse/ext-node-manager.c
new file mode 100644
index 00000000..5cb3feb9
--- /dev/null
+++ b/src/pulse/ext-node-manager.c
@@ -0,0 +1,348 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2012 Jaska Uimonen
+  Copyright 2012 Janos Kovacs
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/context.h>
+#include <pulse/xmalloc.h>
+#include <pulse/fork-detect.h>
+#include <pulse/operation.h>
+
+#include <pulsecore/macro.h>
+#include <pulsecore/pstream-util.h>
+
+#include "internal.h"
+#include "ext-node-manager.h"
+
+enum {
+    SUBCOMMAND_TEST,
+    SUBCOMMAND_READ,
+    SUBCOMMAND_CONNECT,
+    SUBCOMMAND_DISCONNECT,
+    SUBCOMMAND_SUBSCRIBE,
+    SUBCOMMAND_EVENT
+};
+
+static void ext_node_manager_test_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_operation *o = userdata;
+    uint32_t version = PA_INVALID_INDEX;
+
+    pa_assert(pd);
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (!o->context)
+        goto finish;
+
+    if (command != PA_COMMAND_REPLY) {
+        if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
+            goto finish;
+
+    } else if (pa_tagstruct_getu32(t, &version) < 0 ||
+               !pa_tagstruct_eof(t)) {
+
+        pa_context_fail(o->context, PA_ERR_PROTOCOL);
+        goto finish;
+    }
+
+    if (o->callback) {
+        pa_ext_node_manager_test_cb_t cb = (pa_ext_node_manager_test_cb_t) o->callback;
+        cb(o->context, version, o->userdata);
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_node_manager_test(
+        pa_context *c,
+        pa_ext_node_manager_test_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-murphy-ivi");
+    pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_node_manager_test_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+static void ext_node_manager_read_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_operation *o = userdata;
+    pa_ext_node_manager_info i;
+
+    pa_assert(pd);
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (!o->context)
+        goto finish;
+
+    if (command != PA_COMMAND_REPLY) {
+        if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
+            goto finish;
+    } else {
+
+        while (!pa_tagstruct_eof(t)) {
+
+            memset(&i, 0, sizeof(i));
+
+	    i.props = pa_proplist_new();
+
+            if (pa_tagstruct_gets(t, &i.name) < 0 ||
+                pa_tagstruct_get_proplist(t, i.props) < 0) {
+
+                pa_context_fail(o->context, PA_ERR_PROTOCOL);
+                goto finish;
+            }
+
+            if (o->callback) {
+                pa_ext_node_manager_read_cb_t cb = (pa_ext_node_manager_read_cb_t) o->callback;
+                cb(o->context, &i, 0, o->userdata);
+            }
+
+	    pa_proplist_free(i.props);
+        }
+
+	/* let's send end marker */
+	if (o->callback) {
+                pa_ext_node_manager_read_cb_t cb = (pa_ext_node_manager_read_cb_t) o->callback;
+                cb(o->context, &i, 1, o->userdata);
+            }
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_node_manager_read_nodes(
+        pa_context *c,
+        pa_ext_node_manager_read_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-murphy-ivi");
+    pa_tagstruct_putu32(t, SUBCOMMAND_READ);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_node_manager_read_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+static void ext_node_manager_connect_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_operation *o = userdata;
+    uint32_t connection = PA_INVALID_INDEX;
+
+    pa_assert(pd);
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (!o->context)
+        goto finish;
+
+    if (command != PA_COMMAND_REPLY) {
+        if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
+            goto finish;
+
+    } else if (pa_tagstruct_getu32(t, &connection) < 0 ||
+               !pa_tagstruct_eof(t)) {
+
+        pa_context_fail(o->context, PA_ERR_PROTOCOL);
+        goto finish;
+    }
+
+    if (o->callback) {
+        pa_ext_node_manager_connect_cb_t cb = (pa_ext_node_manager_connect_cb_t) o->callback;
+        cb(o->context, connection, o->userdata);
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_node_manager_connect_nodes(
+        pa_context *c,
+        uint32_t source_node_id,
+        uint32_t sink_node_id,
+        pa_ext_node_manager_connect_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o = NULL;
+    pa_tagstruct *t = NULL;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-murphy-ivi");
+    pa_tagstruct_putu32(t, SUBCOMMAND_CONNECT);
+
+    pa_tagstruct_putu32(t, source_node_id);
+    pa_tagstruct_putu32(t, sink_node_id);
+
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_node_manager_connect_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_node_manager_disconnect_nodes(
+        pa_context *c,
+	uint32_t conn_id,
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o = NULL;
+    pa_tagstruct *t = NULL;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-murphy-ivi");
+    pa_tagstruct_putu32(t, SUBCOMMAND_DISCONNECT);
+
+    pa_tagstruct_putu32(t, conn_id);
+
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_node_manager_subscribe(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, "module-murphy-ivi");
+    pa_tagstruct_putu32(t, SUBCOMMAND_SUBSCRIBE);
+    pa_tagstruct_put_boolean(t, enable);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+void pa_ext_node_manager_set_subscribe_cb(
+        pa_context *c,
+        pa_ext_node_manager_subscribe_cb_t cb,
+        void *userdata) {
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    if (pa_detect_fork())
+        return;
+
+    c->ext_node_manager.callback = cb;
+    c->ext_node_manager.userdata = userdata;
+}
+
+void pa_ext_node_manager_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
+    uint32_t subcommand;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+    pa_assert(t);
+
+    if (pa_tagstruct_getu32(t, &subcommand) < 0 ||
+        !pa_tagstruct_eof(t)) {
+
+        pa_context_fail(c, PA_ERR_PROTOCOL);
+        return;
+    }
+
+    if (subcommand != SUBCOMMAND_EVENT) {
+        pa_context_fail(c, PA_ERR_PROTOCOL);
+        return;
+    }
+
+    if (c->ext_node_manager.callback)
+        c->ext_node_manager.callback(c, c->ext_node_manager.userdata);
+}
diff --git a/src/pulse/ext-node-manager.h b/src/pulse/ext-node-manager.h
new file mode 100644
index 00000000..57b9f011
--- /dev/null
+++ b/src/pulse/ext-node-manager.h
@@ -0,0 +1,93 @@
+#ifndef foopulseextnodemanagerhfoo
+#define foopulseextnodemanagerhfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2012 Jaska Uimonen
+  Copyright 2012 Janos Kovacs
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#include <pulse/cdecl.h>
+#include <pulse/context.h>
+#include <pulse/version.h>
+
+PA_C_DECL_BEGIN
+
+typedef struct pa_ext_node_manager_info {
+    const char *name;
+    pa_proplist *props;
+} pa_ext_node_manager_info;
+
+typedef void (*pa_ext_node_manager_test_cb_t)(
+        pa_context *c,
+        uint32_t version,
+        void *userdata);
+
+pa_operation *pa_ext_node_manager_test(
+        pa_context *c,
+        pa_ext_node_manager_test_cb_t cb,
+        void *userdata);
+
+typedef void (*pa_ext_node_manager_read_cb_t)(
+        pa_context *c,
+        const pa_ext_node_manager_info *info,
+        int eol,
+        void *userdata);
+
+pa_operation *pa_ext_node_manager_read_nodes(
+        pa_context *c,
+        pa_ext_node_manager_read_cb_t cb,
+        void *userdata);
+
+typedef void (*pa_ext_node_manager_connect_cb_t)(
+        pa_context *c,
+        uint32_t connection,
+        void *userdata);
+
+pa_operation *pa_ext_node_manager_connect_nodes(
+        pa_context *c,
+        uint32_t src,
+        uint32_t dst,
+        pa_ext_node_manager_connect_cb_t cb,
+        void *userdata);
+
+pa_operation *pa_ext_node_manager_disconnect_nodes(
+        pa_context *c,
+        uint32_t conn,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+pa_operation *pa_ext_node_manager_subscribe(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+typedef void (*pa_ext_node_manager_subscribe_cb_t)(
+        pa_context *c,
+        void *userdata);
+
+void pa_ext_node_manager_set_subscribe_cb(
+        pa_context *c,
+        pa_ext_node_manager_subscribe_cb_t cb,
+        void *userdata);
+
+PA_C_DECL_END
+
+#endif
diff --git a/src/pulse/internal.h b/src/pulse/internal.h
index c5bdcb1e..fba182ba 100644
--- a/src/pulse/internal.h
+++ b/src/pulse/internal.h
@@ -31,6 +31,7 @@
 #include <pulse/ext-device-manager.h>
 #include <pulse/ext-device-restore.h>
 #include <pulse/ext-stream-restore.h>
+#include <pulse/ext-node-manager.h>
 
 #include <pulsecore/socket-client.h>
 #include <pulsecore/pstream.h>
@@ -115,6 +116,10 @@ struct pa_context {
         pa_ext_stream_restore_subscribe_cb_t callback;
         void *userdata;
     } ext_stream_restore;
+    struct {
+        pa_ext_node_manager_subscribe_cb_t callback;
+        void *userdata;
+    } ext_node_manager;
 };
 
 #define PA_MAX_WRITE_INDEX_CORRECTIONS 32
@@ -302,6 +307,7 @@ pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *ta
 void pa_ext_device_manager_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
 void pa_ext_device_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
 void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
+void pa_ext_node_manager_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
 
 void pa_format_info_free2(pa_format_info *f, void *userdata);