wrap protocol extension of module-stream-restore

src/pulse/context.c

@@ -82,6 +82,8 @@
 
 #define AUTOSPAWN_LOCK "autospawn.lock"
 
+void pa_command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
+
 static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
     [PA_COMMAND_REQUEST] = pa_command_request,
     [PA_COMMAND_OVERFLOW] = pa_command_overflow_or_underflow,
@@ -93,7 +95,8 @@ static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
     [PA_COMMAND_PLAYBACK_STREAM_SUSPENDED] = pa_command_stream_suspended,
     [PA_COMMAND_RECORD_STREAM_SUSPENDED] = pa_command_stream_suspended,
     [PA_COMMAND_STARTED] = pa_command_stream_started,
-    [PA_COMMAND_SUBSCRIBE_EVENT] = pa_command_subscribe_event
+    [PA_COMMAND_SUBSCRIBE_EVENT] = pa_command_subscribe_event,
+    [PA_COMMAND_EXTENSION] = pa_command_extension
 };
 
 static void unlock_autospawn_lock_file(pa_context *c) {
@@ -126,6 +129,9 @@ static void reset_callbacks(pa_context *c) {
 
     c->subscribe_callback = NULL;
     c->subscribe_userdata = NULL;
+
+    c->ext_stream_restore.callback = NULL;
+    c->ext_stream_restore.userdata = NULL;
 }
 
 pa_context *pa_context_new_with_proplist(pa_mainloop_api *mainloop, const char *name, pa_proplist *p) {
@@ -1230,3 +1236,32 @@ pa_operation *pa_context_proplist_remove(pa_context *c, const char *const keys[]
 
     return o;
 }
+
+void pa_command_extension(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_context *c = userdata;
+    uint32_t idx;
+    const char *name;
+
+    pa_assert(pd);
+    pa_assert(command == PA_COMMAND_EXTENSION);
+    pa_assert(t);
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    pa_context_ref(c);
+
+    if (pa_tagstruct_getu32(t, &idx) < 0 ||
+        pa_tagstruct_gets(t, &name) < 0 ||
+        !pa_tagstruct_eof(t)) {
+        pa_context_fail(c, PA_ERR_PROTOCOL);
+        goto finish;
+    }
+
+    if (!strcmp(name, "module-stream-restore"))
+        pa_ext_stream_restore_command(c, tag, t);
+    else
+        pa_log("Received message for unknown extension '%s'", name);
+
+finish:
+    pa_context_unref(c);
+}

src/pulse/ext-stream-restore.c

@@ -0,0 +1,331 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2008 Lennart Poettering
+
+  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 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/gccmacro.h>
+
+#include <pulsecore/macro.h>
+#include <pulsecore/pstream-util.h>
+
+#include "internal.h"
+
+#include "ext-stream-restore.h"
+
+enum {
+    SUBCOMMAND_TEST,
+    SUBCOMMAND_READ,
+    SUBCOMMAND_WRITE,
+    SUBCOMMAND_DELETE,
+    SUBCOMMAND_SUBSCRIBE,
+    SUBCOMMAND_EVENT
+};
+
+static void ext_stream_restore_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_stream_restore_test_cb_t cb = (pa_ext_stream_restore_test_cb_t) o->callback;
+        cb(o->context, version, o->userdata);
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_stream_restore_test(
+        pa_context *c,
+        pa_ext_stream_restore_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_assert(cb);
+
+    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-stream-restore");
+    pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_stream_restore_test_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+static void ext_stream_restore_read_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_operation *o = userdata;
+    int eol = 1;
+
+    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;
+
+        eol = -1;
+    } else {
+
+        while (!pa_tagstruct_eof(t)) {
+            pa_ext_stream_restore_info i;
+            pa_bool_t mute = FALSE;
+
+            memset(&i, 0, sizeof(i));
+
+            if (pa_tagstruct_gets(t, &i.name) < 0 ||
+                pa_tagstruct_get_channel_map(t, &i.channel_map) < 0 ||
+                pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
+                pa_tagstruct_gets(t, &i.device) < 0 ||
+                pa_tagstruct_get_boolean(t, &mute) < 0) {
+
+                pa_context_fail(o->context, PA_ERR_PROTOCOL);
+                goto finish;
+            }
+
+            i.mute = (int) mute;
+
+            if (o->callback) {
+                pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
+                cb(o->context, &i, 0, o->userdata);
+            }
+        }
+    }
+
+    if (o->callback) {
+        pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
+        cb(o->context, NULL, eol, o->userdata);
+    }
+
+finish:
+    pa_operation_done(o);
+    pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_stream_restore_read(
+        pa_context *c,
+        pa_ext_stream_restore_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_assert(cb);
+
+    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-stream-restore");
+    pa_tagstruct_putu32(t, SUBCOMMAND_READ);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_stream_restore_read_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+    return o;
+}
+
+pa_operation *pa_ext_stream_restore_write(
+        pa_context *c,
+        pa_update_mode_t mode,
+        const pa_ext_stream_restore_info data[],
+        unsigned n,
+        pa_bool_t apply_immediately,
+        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_assert(mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE || mode == PA_UPDATE_SET);
+    pa_assert(data);
+    pa_assert(cb);
+
+    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-stream-restore");
+    pa_tagstruct_putu32(t, SUBCOMMAND_WRITE);
+
+    pa_tagstruct_putu32(t, mode);
+    pa_tagstruct_put_boolean(t, apply_immediately);
+
+    for (; n > 0; n--, data++) {
+        pa_tagstruct_puts(t, data->name);
+        pa_tagstruct_put_channel_map(t, &data->channel_map);
+        pa_tagstruct_put_cvolume(t, &data->volume);
+        pa_tagstruct_puts(t, data->device);
+        pa_tagstruct_put_boolean(t, data->mute);
+    }
+
+    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_stream_restore_delete(
+        pa_context *c,
+        const char *const s[],
+        pa_context_success_cb_t cb,
+        void *userdata) {
+
+    uint32_t tag;
+    pa_operation *o;
+    pa_tagstruct *t;
+    const char *const *k;
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+    pa_assert(s);
+    pa_assert(cb);
+
+    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-stream-restore");
+    pa_tagstruct_putu32(t, SUBCOMMAND_DELETE);
+
+    for (k = s; *k; k++)
+        pa_tagstruct_puts(t, *k);
+
+    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_stream_restore_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_assert(cb);
+
+    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-stream-restore");
+    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_stream_restore_set_subscribe_cb(
+        pa_context *c,
+        pa_ext_stream_restore_subscribe_cb_t cb,
+        void *userdata) {
+
+    pa_assert(c);
+    pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+    c->ext_stream_restore.callback = cb;
+    c->ext_stream_restore.userdata = userdata;
+}
+
+void pa_ext_stream_restore_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_stream_restore.callback)
+        c->ext_stream_restore.callback(c, c->ext_stream_restore.userdata);
+
+}

src/pulse/ext-stream-restore.h

@@ -0,0 +1,86 @@
+#ifndef foopulseextstreamrestorehfoo
+#define foopulseextstreamrestorehfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2008 Lennart Poettering
+
+  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 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/context.h>
+
+typedef struct pa_ext_stream_restore_info {
+    const char *name;
+    pa_channel_map channel_map;
+    pa_cvolume volume;
+    const char *device;
+    int mute;
+} pa_ext_stream_restore_info;
+
+typedef void (*pa_ext_stream_restore_test_cb_t)(
+        pa_context *c,
+        uint32_t version,
+        void *userdata);
+
+pa_operation *pa_ext_stream_restore_test(
+        pa_context *c,
+        pa_ext_stream_restore_test_cb_t cb,
+        void *userdata);
+
+typedef void (*pa_ext_stream_restore_read_cb_t)(
+        pa_context *c,
+        const pa_ext_stream_restore_info *info,
+        int eol,
+        void *userdata);
+
+pa_operation *pa_ext_stream_restore_read(
+        pa_context *c,
+        pa_ext_stream_restore_read_cb_t cb,
+        void *userdata);
+
+pa_operation *pa_ext_stream_restore_write(
+        pa_context *c,
+        pa_update_mode_t mode,
+        const pa_ext_stream_restore_info data[],
+        unsigned n,
+        pa_bool_t apply_immediately,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+pa_operation *pa_ext_stream_restore_delete(
+        pa_context *c,
+        const char *const s[],
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+pa_operation *pa_ext_stream_restore_subscribe(
+        pa_context *c,
+        int enable,
+        pa_context_success_cb_t cb,
+        void *userdata);
+
+typedef void (*pa_ext_stream_restore_subscribe_cb_t)(
+        pa_context *c,
+        void *userdata);
+
+void pa_ext_stream_restore_set_subscribe_cb(
+        pa_context *c,
+        pa_ext_stream_restore_subscribe_cb_t cb,
+        void *userdata);
+
+#endif

src/pulse/internal.h

@@ -28,6 +28,7 @@
 #include <pulse/stream.h>
 #include <pulse/operation.h>
 #include <pulse/subscribe.h>
+#include <pulse/ext-stream-restore.h>
 
 #include <pulsecore/socket-client.h>
 #include <pulsecore/pstream.h>
@@ -86,6 +87,12 @@ struct pa_context {
     pa_client_conf *conf;
 
     uint32_t client_index;
+
+    /* Extension specific data */
+    struct {
+        pa_ext_stream_restore_subscribe_cb_t callback;
+        void *userdata;
+    } ext_stream_restore;
 };
 
 #define PA_MAX_WRITE_INDEX_CORRECTIONS 32
@@ -233,4 +240,6 @@ pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *ta
 
 #define PA_CHECK_VALIDITY_RETURN_NULL(context, expression, error) PA_CHECK_VALIDITY_RETURN_ANY(context, expression, error, NULL)
 
+void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t);
+
 #endif

src/pulse/subscribe.c

@@ -61,7 +61,6 @@ finish:
     pa_context_unref(c);
 }
 
-
 pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, pa_context_success_cb_t cb, void *userdata) {
     pa_operation *o;
     pa_tagstruct *t;