add protocol support for muting sink inputs and suspending sinks/sources

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1666 fefdeb5f-60dc-0310-8127-8f9354f1896f

4 files changed, 242 insertions, 10 deletions

diff --git a/src/pulse/introspect.c b/src/pulse/introspect.c
index 7f6406cf..568749d7 100644
--- a/src/pulse/introspect.c
+++ b/src/pulse/introspect.c
@@ -47,6 +47,8 @@ static void context_stat_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNU
     assert(o);
     assert(o->ref >= 1);
 
+    memset(&i, 0, sizeof(i));
+    
     if (!o->context)
         goto finish;
 
@@ -59,8 +61,7 @@ static void context_stat_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNU
                pa_tagstruct_getu32(t, &i.memblock_total_size) < 0 ||
                pa_tagstruct_getu32(t, &i.memblock_allocated) < 0 ||
                pa_tagstruct_getu32(t, &i.memblock_allocated_size) < 0 ||
-               pa_tagstruct_getu32(t, &i.scache_size) < 0 ||
-               !pa_tagstruct_eof(t)) {
+               pa_tagstruct_getu32(t, &i.scache_size) < 0) {
         pa_context_fail(o->context, PA_ERR_PROTOCOL);
         goto finish;
     }
@@ -89,6 +90,8 @@ static void context_get_server_info_callback(pa_pdispatch *pd, uint32_t command,
     assert(o);
     assert(o->ref >= 1);
 
+    memset(&i, 0, sizeof(i));
+    
     if (!o->context)
         goto finish;
 
@@ -104,8 +107,7 @@ static void context_get_server_info_callback(pa_pdispatch *pd, uint32_t command,
                pa_tagstruct_get_sample_spec(t, &i.sample_spec) < 0 ||
                pa_tagstruct_gets(t, &i.default_sink_name) < 0 ||
                pa_tagstruct_gets(t, &i.default_source_name) < 0 ||
-               pa_tagstruct_getu32(t, &i.cookie) < 0 ||
-               !pa_tagstruct_eof(t)) {
+               pa_tagstruct_getu32(t, &i.cookie) < 0) {
 
         pa_context_fail(o->context, PA_ERR_PROTOCOL);
         goto finish;
@@ -148,6 +150,7 @@ static void context_get_sink_info_callback(pa_pdispatch *pd, uint32_t command, P
 
         while (!pa_tagstruct_eof(t)) {
             pa_sink_info i;
+            memset(&i, 0, sizeof(i));
 
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
@@ -258,6 +261,7 @@ static void context_get_source_info_callback(pa_pdispatch *pd, uint32_t command,
         while (!pa_tagstruct_eof(t)) {
             pa_source_info i;
             uint32_t flags;
+            memset(&i, 0, sizeof(i));
 
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
@@ -367,6 +371,7 @@ static void context_get_client_info_callback(pa_pdispatch *pd, uint32_t command,
 
         while (!pa_tagstruct_eof(t)) {
             pa_client_info i;
+            memset(&i, 0, sizeof(i));
 
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
@@ -441,6 +446,7 @@ static void context_get_module_info_callback(pa_pdispatch *pd, uint32_t command,
 
         while (!pa_tagstruct_eof(t)) {
             pa_module_info i;
+            memset(&i, 0, sizeof(i));
 
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
@@ -516,7 +522,8 @@ static void context_get_sink_input_info_callback(pa_pdispatch *pd, uint32_t comm
 
         while (!pa_tagstruct_eof(t)) {
             pa_sink_input_info i;
-
+            memset(&i, 0, sizeof(i));
+            
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
                 pa_tagstruct_getu32(t, &i.owner_module) < 0 ||
@@ -528,7 +535,8 @@ static void context_get_sink_input_info_callback(pa_pdispatch *pd, uint32_t comm
                 pa_tagstruct_get_usec(t, &i.buffer_usec) < 0 ||
                 pa_tagstruct_get_usec(t, &i.sink_usec) < 0 ||
                 pa_tagstruct_gets(t, &i.resample_method) < 0 ||
-                pa_tagstruct_gets(t, &i.driver) < 0) {
+                pa_tagstruct_gets(t, &i.driver) < 0 ||
+                (o->context->version >= 11 && pa_tagstruct_get_boolean(t, &i.mute) < 0)) {
 
                 pa_context_fail(o->context, PA_ERR_PROTOCOL);
                 goto finish;
@@ -600,6 +608,8 @@ static void context_get_source_output_info_callback(pa_pdispatch *pd, uint32_t c
         while (!pa_tagstruct_eof(t)) {
             pa_source_output_info i;
 
+            memset(&i, 0, sizeof(i));
+            
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
                 pa_tagstruct_getu32(t, &i.owner_module) < 0 ||
@@ -781,6 +791,29 @@ pa_operation* pa_context_set_sink_input_volume(pa_context *c, uint32_t idx, cons
     return o;
 }
 
+pa_operation* pa_context_set_sink_input_mute(pa_context *c, uint32_t idx, int mute, pa_context_success_cb_t cb, void *userdata) {
+    pa_operation *o;
+    pa_tagstruct *t;
+    uint32_t tag;
+
+    assert(c);
+    assert(c->ref >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, idx != PA_INVALID_INDEX, PA_ERR_INVALID);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 11, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_SET_SINK_INPUT_MUTE, &tag);
+    pa_tagstruct_putu32(t, idx);
+    pa_tagstruct_put_boolean(t, 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_context_set_source_volume_by_index(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata) {
     pa_operation *o;
     pa_tagstruct *t;
@@ -900,6 +933,8 @@ static void context_get_sample_info_callback(pa_pdispatch *pd, uint32_t command,
         while (!pa_tagstruct_eof(t)) {
             pa_sample_info i;
 
+            memset(&i, 0, sizeof(i));
+
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
                 pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
@@ -1096,6 +1131,8 @@ static void context_get_autoload_info_callback(pa_pdispatch *pd, uint32_t comman
         while (!pa_tagstruct_eof(t)) {
             pa_autoload_info i;
 
+            memset(&i, 0, sizeof(i));
+
             if (pa_tagstruct_getu32(t, &i.index) < 0 ||
                 pa_tagstruct_gets(t, &i.name) < 0 ||
                 pa_tagstruct_getu32(t, &i.type) < 0 ||
@@ -1341,3 +1378,97 @@ pa_operation* pa_context_move_source_output_by_index(pa_context *c, uint32_t idx
 
     return o;
 }
+
+pa_operation* pa_context_suspend_sink_by_name(pa_context *c, char *sink_name, int suspend, pa_context_success_cb_t cb, void* userdata) {
+    pa_operation *o;
+    pa_tagstruct *t;
+    uint32_t tag;
+
+    assert(c);
+    assert(c->ref >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 11, PA_ERR_NOTSUPPORTED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !sink_name || *sink_name, PA_ERR_INVALID);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_SUSPEND_SINK, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, sink_name);
+    pa_tagstruct_put_boolean(t, suspend);
+    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_context_suspend_sink_by_index(pa_context *c, uint32_t idx, int suspend, pa_context_success_cb_t cb, void* userdata) {
+    pa_operation *o;
+    pa_tagstruct *t;
+    uint32_t tag;
+
+    assert(c);
+    assert(c->ref >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 11, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_SUSPEND_SINK, &tag);
+    pa_tagstruct_putu32(t, idx);
+    pa_tagstruct_puts(t, idx == PA_INVALID_INDEX ? "" : NULL);
+    pa_tagstruct_put_boolean(t, suspend);
+    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_context_suspend_source_by_name(pa_context *c, char *source_name, int suspend, pa_context_success_cb_t cb, void* userdata) {
+    pa_operation *o;
+    pa_tagstruct *t;
+    uint32_t tag;
+
+    assert(c);
+    assert(c->ref >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 11, PA_ERR_NOTSUPPORTED);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, !source_name || *source_name, PA_ERR_INVALID);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_SUSPEND_SOURCE, &tag);
+    pa_tagstruct_putu32(t, PA_INVALID_INDEX);
+    pa_tagstruct_puts(t, source_name);
+    pa_tagstruct_put_boolean(t, suspend);
+    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_context_suspend_source_by_index(pa_context *c, uint32_t idx, int suspend, pa_context_success_cb_t cb, void* userdata) {
+    pa_operation *o;
+    pa_tagstruct *t;
+    uint32_t tag;
+
+    assert(c);
+    assert(c->ref >= 1);
+
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
+    PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 11, PA_ERR_NOTSUPPORTED);
+
+    o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
+
+    t = pa_tagstruct_command(c, PA_COMMAND_SUSPEND_SOURCE, &tag);
+    pa_tagstruct_putu32(t, idx);
+    pa_tagstruct_puts(t, idx == PA_INVALID_INDEX ? "" : NULL);
+    pa_tagstruct_put_boolean(t, suspend);
+    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;
+}
diff --git a/src/pulse/introspect.h b/src/pulse/introspect.h
index 43e430b2..e700e39b 100644
--- a/src/pulse/introspect.h
+++ b/src/pulse/introspect.h
@@ -249,7 +249,7 @@ typedef struct pa_source_info {
     const char *monitor_of_sink_name;   /**< Name of the owning sink, or PA_INVALID_INDEX */
     pa_usec_t latency;                  /**< Length of filled record buffer of this source. \since 0.5 */
     const char *driver;                 /**< Driver name \since 0.8 */
-    pa_source_flags_t flags;            /**< Flags \since 0.8 */
+    pa_source_flags_t flags;            /**< Flags \since 0.8 */    
 } pa_source_info;
 
 /** Callback prototype for pa_context_get_source_info_by_name() and friends */
@@ -331,6 +331,7 @@ typedef struct pa_sink_input_info {
     pa_usec_t sink_usec;                 /**< Latency of the sink device, see pa_latency_info for details */
     const char *resample_method;         /**< Thre resampling method used by this sink input. \since 0.7 */
     const char *driver;                  /**< Driver name \since 0.8 */
+    int mute;                            /**< Stream muted \since 0.9.7 */
 } pa_sink_input_info;
 
 /** Callback prototype for pa_context_get_sink_input_info() and firends*/
@@ -381,6 +382,9 @@ pa_operation* pa_context_set_sink_mute_by_name(pa_context *c, const char *name,
 /** Set the volume of a sink input stream */
 pa_operation* pa_context_set_sink_input_volume(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata);
 
+/** Set the mute switch of a sink input stream \since 0.9.7 */
+pa_operation* pa_context_set_sink_input_mute(pa_context *c, uint32_t idx, int mute, pa_context_success_cb_t cb, void *userdata);
+
 /** Set the volume of a source device specified by its index \since 0.8 */
 pa_operation* pa_context_set_source_volume_by_index(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata);
 
@@ -499,6 +503,18 @@ pa_operation* pa_context_move_source_output_by_name(pa_context *c, uint32_t idx,
 /** Move the specified source output to a different source. \since 0.9.5 */
 pa_operation* pa_context_move_source_output_by_index(pa_context *c, uint32_t idx, uint32_t source_idx, pa_context_success_cb_t cb, void* userdata);
 
+/** Suspend/Resume a sink. \since 0.9.7 */
+pa_operation* pa_context_suspend_sink_by_name(pa_context *c, char *sink_name, int suspend, pa_context_success_cb_t cb, void* userdata);
+
+/** Suspend/Resume a sink. If idx is PA_INVALID_INDEX all sinks will be suspended. \since 0.9.7 */
+pa_operation* pa_context_suspend_sink_by_index(pa_context *c, uint32_t idx, int suspend,  pa_context_success_cb_t cb, void* userdata);
+
+/** Suspend/Resume a source. \since 0.9.7 */
+pa_operation* pa_context_suspend_source_by_name(pa_context *c, char *source_name, int suspend, pa_context_success_cb_t cb, void* userdata);
+
+/** Suspend/Resume a source. If idx is PA_INVALID_INDEX all sources will be suspended. \since 0.9.7 */
+pa_operation* pa_context_suspend_source_by_index(pa_context *c, uint32_t idx, int suspend, pa_context_success_cb_t cb, void* userdata);
+
 PA_C_DECL_END
 
 #endif
diff --git a/src/pulsecore/native-common.h b/src/pulsecore/native-common.h
index d22c8d12..9defc4a5 100644
--- a/src/pulsecore/native-common.h
+++ b/src/pulsecore/native-common.h
@@ -117,6 +117,9 @@ enum {
 
     PA_COMMAND_SET_SINK_INPUT_MUTE,
 
+    PA_COMMAND_SUSPEND_SINK,
+    PA_COMMAND_SUSPEND_SOURCE,
+
     PA_COMMAND_MAX
 };
 
diff --git a/src/pulsecore/protocol-native.c b/src/pulsecore/protocol-native.c
index 6b49efec..fe73865a 100644
--- a/src/pulsecore/protocol-native.c
+++ b/src/pulsecore/protocol-native.c
@@ -247,6 +247,7 @@ static void command_get_autoload_info_list(pa_pdispatch *pd, uint32_t command, u
 static void command_cork_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 static void command_flush_record_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
+static void command_suspend(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_ERROR] = NULL,
@@ -296,6 +297,9 @@ static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
     [PA_COMMAND_SET_SINK_INPUT_MUTE] = command_set_mute,
     [PA_COMMAND_SET_SOURCE_MUTE] = command_set_mute,
 
+    [PA_COMMAND_SUSPEND_SINK] = command_suspend,
+    [PA_COMMAND_SUSPEND_SOURCE] = command_suspend,
+    
     [PA_COMMAND_CORK_PLAYBACK_STREAM] = command_cork_playback_stream,
     [PA_COMMAND_FLUSH_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
     [PA_COMMAND_TRIGGER_PLAYBACK_STREAM] = command_trigger_or_flush_or_prebuf_playback_stream,
@@ -1770,7 +1774,7 @@ static void module_fill_tagstruct(pa_tagstruct *t, pa_module *module) {
     pa_tagstruct_put_boolean(t, module->auto_unload);
 }
 
-static void sink_input_fill_tagstruct(pa_tagstruct *t, pa_sink_input *s) {
+static void sink_input_fill_tagstruct(connection *c, pa_tagstruct *t, pa_sink_input *s) {
     pa_assert(t);
     pa_sink_input_assert_ref(s);
 
@@ -1786,6 +1790,8 @@ static void sink_input_fill_tagstruct(pa_tagstruct *t, pa_sink_input *s) {
     pa_tagstruct_put_usec(t, pa_sink_get_latency(s->sink));
     pa_tagstruct_puts(t, pa_resample_method_to_string(pa_sink_input_get_resample_method(s)));
     pa_tagstruct_puts(t, s->driver);
+    if (c->version >= 11)
+        pa_tagstruct_put_boolean(t, pa_sink_input_get_mute(s));    
 }
 
 static void source_output_fill_tagstruct(pa_tagstruct *t, pa_source_output *s) {
@@ -1891,7 +1897,7 @@ static void command_get_info(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t command, u
     else if (module)
         module_fill_tagstruct(reply, module);
     else if (si)
-        sink_input_fill_tagstruct(reply, si);
+        sink_input_fill_tagstruct(c, reply, si);
     else if (so)
         source_output_fill_tagstruct(reply, so);
     else
@@ -1946,7 +1952,7 @@ static void command_get_info_list(PA_GCC_UNUSED pa_pdispatch *pd, uint32_t comma
             else if (command == PA_COMMAND_GET_MODULE_INFO_LIST)
                 module_fill_tagstruct(reply, p);
             else if (command == PA_COMMAND_GET_SINK_INPUT_INFO_LIST)
-                sink_input_fill_tagstruct(reply, p);
+                sink_input_fill_tagstruct(c, reply, p);
             else if (command == PA_COMMAND_GET_SOURCE_OUTPUT_INFO_LIST)
                 source_output_fill_tagstruct(reply, p);
             else {
@@ -2620,6 +2626,8 @@ static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag
         pa_source_output *so = NULL;
         pa_source *source;
 
+        pa_assert(command == PA_COMMAND_MOVE_SOURCE_OUTPUT);
+
         so = pa_idxset_get_by_index(c->protocol->core->source_outputs, idx);
 
         if (idx_device != PA_INVALID_INDEX)
@@ -2638,6 +2646,80 @@ static void command_move_stream(pa_pdispatch *pd, uint32_t command, uint32_t tag
     pa_pstream_send_simple_ack(c->pstream, tag);
 }
 
+static void command_suspend(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
+    connection *c = CONNECTION(userdata);
+    uint32_t idx = PA_INVALID_INDEX;
+    const char *name = NULL;
+    int b;
+
+    connection_assert_ref(c);
+    pa_assert(t);
+
+    if (pa_tagstruct_getu32(t, &idx) < 0 ||
+        pa_tagstruct_gets(t, &name) < 0 ||
+        pa_tagstruct_get_boolean(t, &b) < 0 ||
+        !pa_tagstruct_eof(t)) {
+        protocol_error(c);
+        return;
+    }
+
+    CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
+    CHECK_VALIDITY(c->pstream, idx != PA_INVALID_INDEX || !name || !*name || pa_utf8_valid(name), tag, PA_ERR_INVALID);
+
+    if (command == PA_COMMAND_SUSPEND_SINK) {
+
+        if (idx == PA_INVALID_INDEX && name && !*name) {
+
+            if (pa_sink_suspend_all(c->protocol->core, b) < 0) {
+                pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
+                return;
+            }
+        } else {
+            pa_sink *sink = NULL;
+
+            if (idx != PA_INVALID_INDEX)
+                sink = pa_idxset_get_by_index(c->protocol->core->sinks, idx);
+            else 
+                sink = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SINK, 1);
+
+            CHECK_VALIDITY(c->pstream, sink, tag, PA_ERR_NOENTITY);
+
+            if (pa_sink_suspend(sink, b) < 0) {
+                pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
+                return;
+            }
+        }
+    } else {
+
+        pa_assert(command == PA_COMMAND_SUSPEND_SOURCE);
+        
+        if (idx == PA_INVALID_INDEX && name && !*name) {
+            
+            if (pa_source_suspend_all(c->protocol->core, b) < 0) {
+                pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
+                return;
+            }
+
+        } else {
+            pa_source *source;
+
+            if (idx != PA_INVALID_INDEX)
+                source = pa_idxset_get_by_index(c->protocol->core->sources, idx);
+            else
+                source = pa_namereg_get(c->protocol->core, name, PA_NAMEREG_SOURCE, 1);
+            
+            CHECK_VALIDITY(c->pstream, source, tag, PA_ERR_NOENTITY);
+
+            if (pa_source_suspend(source, b) < 0) {
+                pa_pstream_send_error(c->pstream, tag, PA_ERR_INVALID);
+                return;
+            }
+        }
+    }
+
+    pa_pstream_send_simple_ack(c->pstream, tag);
+}
+
 /*** pstream callbacks ***/
 
 static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const pa_creds *creds, void *userdata) {