add support for subscribing to autoload table changes

fix module-combine so that the sample rate of at least one streams is not changed from the original


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@206 fefdeb5f-60dc-0310-8127-8f9354f1896f

doc/todo

@@ -1,9 +1,8 @@
 *** $Id$ ***
 
 *** 0.5 ***
-- more complete pactl
-- fix tcp/native
-- paman: add support for killing sink inputs, source outputs, clients
+- more complete pactl/parec
+- fix tcp/native in regard to latencies
 - add client config file
 - remove autospawn stuff in conf.c
 

polyp/autoload.c

@@ -34,9 +34,11 @@
 #include "sound-file.h"
 #include "log.h"
 #include "scache.h"
+#include "subscribe.h"
 
 static void entry_free(struct pa_autoload_entry *e) {
     assert(e);
+    pa_subscription_post(e->core, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_REMOVE, PA_INVALID_INDEX);
     pa_xfree(e->name);
     pa_xfree(e->module);
     pa_xfree(e->argument);
@@ -51,6 +53,7 @@ static struct pa_autoload_entry* entry_new(struct pa_core *c, const char *name)
         return NULL;
     
     e = pa_xmalloc(sizeof(struct pa_autoload_entry));
+    e->core = c;
     e->name = pa_xstrdup(name);
     e->module = e->argument = NULL;
     e->in_action = 0;
@@ -61,6 +64,8 @@ static struct pa_autoload_entry* entry_new(struct pa_core *c, const char *name)
     
     pa_hashmap_put(c->autoload_hashmap, e->name, e);
 
+    pa_subscription_post(c, PA_SUBSCRIPTION_EVENT_AUTOLOAD|PA_SUBSCRIPTION_EVENT_NEW, PA_INVALID_INDEX);
+    
     return e;
 }
 

polyp/autoload.h

@@ -25,6 +25,7 @@
 #include "namereg.h"
 
 struct pa_autoload_entry {
+    struct pa_core *core;
     char *name;
     enum pa_namereg_type type;
     int in_action;

polyp/module-combine.c

@@ -40,7 +40,7 @@
 PA_MODULE_AUTHOR("Lennart Poettering")
 PA_MODULE_DESCRIPTION("Combine multiple sinks to one")
 PA_MODULE_VERSION(PACKAGE_VERSION)
-PA_MODULE_USAGE("sink_name=<name for the sink> master=<master sink> slave=<slave sinks> adjust_time")
+PA_MODULE_USAGE("sink_name=<name for the sink> master=<master sink> slave=<slave sinks> adjust_time=<seconds>")
 
 #define DEFAULT_SINK_NAME "combined"
 #define MEMBLOCKQ_MAXLENGTH (1024*170)
@@ -61,7 +61,7 @@ struct output {
     struct pa_sink_input *sink_input;
     size_t counter;
     struct pa_memblockq *memblockq;
-    pa_usec_t sink_latency;
+    pa_usec_t total_latency;
     PA_LLIST_FIELDS(struct output);
 };
 
@@ -89,38 +89,44 @@ static void update_usage(struct userdata *u) {
 
 static void adjust_rates(struct userdata *u) {
     struct output *o;
-    pa_usec_t max  = 0;
+    pa_usec_t max_sink_latency = 0, min_total_latency = (pa_usec_t) -1, target_latency;
     uint32_t base_rate;
     assert(u && u->sink);
 
     for (o = u->outputs; o; o = o->next) {
-        o->sink_latency = o->sink_input->sink ? pa_sink_get_latency(o->sink_input->sink) : 0;
+        uint32_t sink_latency = o->sink_input->sink ? pa_sink_get_latency(o->sink_input->sink) : 0;
+        
+        o->total_latency = sink_latency + pa_sink_input_get_latency(o->sink_input);
+        
+        if (sink_latency > max_sink_latency)
+            max_sink_latency = sink_latency;
 
-        if (o->sink_latency > max)
-            max = o->sink_latency;
+        if (o->total_latency < min_total_latency)
+            min_total_latency = o->total_latency;
     }
 
-    pa_log(__FILE__": [%s] maximum latency is %0.0f usec.\n", u->sink->name, (float) max);
+    assert(max_sink_latency > 0 && min_total_latency != (pa_usec_t) -1);
+
+    target_latency = max_sink_latency > min_total_latency ? max_sink_latency : min_total_latency;
+    
+    pa_log(__FILE__": [%s] target latency is %0.0f usec.\n", u->sink->name, (float) target_latency);
 
     base_rate = u->sink->sample_spec.rate;
 
     for (o = u->outputs; o; o = o->next) {
-        pa_usec_t l;
         uint32_t r = base_rate;
 
-        l = o->sink_latency + pa_sink_input_get_latency(o->sink_input);
-
-        if (l < max)
-            r -= (uint32_t) (((((double) max-l))/u->adjust_time)*r/ 1000000);
-        else if (l > max)
-            r += (uint32_t) (((((double) l-max))/u->adjust_time)*r/ 1000000);
+        if (o->total_latency < target_latency)
+            r -= (uint32_t) (((((double) target_latency - o->total_latency))/u->adjust_time)*r/ 1000000);
+        else if (o->total_latency > target_latency)
+            r += (uint32_t) (((((double) o->total_latency - target_latency))/u->adjust_time)*r/ 1000000);
 
         if (r < (uint32_t) (base_rate*0.9) || r > (uint32_t) (base_rate*1.1))
             pa_log(__FILE__": [%s] sample rates too different, not adjusting (%u vs. %u).\n", o->sink_input->name, base_rate, r);
-        else
-            pa_log(__FILE__": [%s] new rate is %u Hz; ratio is %0.3f; latency is %0.0f usec.\n", o->sink_input->name, r, (double) r / base_rate, (float) l);
-        
-        pa_sink_input_set_rate(o->sink_input, r);
+        else {
+            pa_log(__FILE__": [%s] new rate is %u Hz; ratio is %0.3f; latency is %0.0f usec.\n", o->sink_input->name, r, (double) r / base_rate, (float) o->total_latency);
+            pa_sink_input_set_rate(o->sink_input, r);
+        }
     }
 }
 

polyp/polyplib-def.h

@@ -108,7 +108,8 @@ enum pa_subscription_mask {
     PA_SUBSCRIPTION_MASK_MODULE = 16,            /**< Module events */
     PA_SUBSCRIPTION_MASK_CLIENT = 32,            /**< Client events */
     PA_SUBSCRIPTION_MASK_SAMPLE_CACHE = 64,      /**< Sample cache events */
-    PA_SUBSCRIPTION_MASK_SERVER = 128            /**< Other global server changes. \since 0.4 */
+    PA_SUBSCRIPTION_MASK_SERVER = 128,           /**< Other global server changes. \since 0.4 */
+    PA_SUBSCRIPTION_MASK_AUTOLOAD = 256          /**< Autoload table events. \since 0.5 */
 };
 
 /** Subscription event types, as used by pa_context_subscribe() */
@@ -121,7 +122,8 @@ enum pa_subscription_event_type {
     PA_SUBSCRIPTION_EVENT_CLIENT = 5,         /**< Event type: Client */
     PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE = 6,   /**< Event type: Sample cache item */
     PA_SUBSCRIPTION_EVENT_SERVER = 7,         /**< Event type: Global server change, only occuring with PA_SUBSCRIPTION_EVENT_CHANGE. \since 0.4  */
-    PA_SUBSCRIPTION_EVENT_FACILITY_MASK = 7,  /**< A mask to extract the event type from an event value */
+    PA_SUBSCRIPTION_EVENT_AUTOLOAD = 8,       /**< Event type: Autoload table changes. \since 0.5 */
+    PA_SUBSCRIPTION_EVENT_FACILITY_MASK = 15, /**< A mask to extract the event type from an event value */
 
     PA_SUBSCRIPTION_EVENT_NEW = 0,            /**< A new object was created */
     PA_SUBSCRIPTION_EVENT_CHANGE = 16,        /**< A property of the object was modified */

polyp/pstream.c

@@ -101,6 +101,10 @@ static void do_read(struct pa_pstream *p);
 
 static void do_something(struct pa_pstream *p) {
     assert(p);
+
+    if (p->dead)
+        return;
+    
     p->mainloop->defer_enable(p->defer_event, 0);
 
     pa_pstream_ref(p);
@@ -213,8 +217,11 @@ static void pstream_free(struct pa_pstream *p) {
 
 void pa_pstream_send_packet(struct pa_pstream*p, struct pa_packet *packet) {
     struct item_info *i;
-    assert(p && packet);
+    assert(p && packet && p->ref >= 1);
 
+    if (p->dead)
+        return;
+    
 /*     pa_log(__FILE__": push-packet %p\n", packet); */
     
     i = pa_xmalloc(sizeof(struct item_info));
@@ -227,8 +234,11 @@ void pa_pstream_send_packet(struct pa_pstream*p, struct pa_packet *packet) {
 
 void pa_pstream_send_memblock(struct pa_pstream*p, uint32_t channel, uint32_t delta, const struct pa_memchunk *chunk) {
     struct item_info *i;
-    assert(p && channel != (uint32_t) -1 && chunk);
+    assert(p && channel != (uint32_t) -1 && chunk && p->ref >= 1);
 
+    if (p->dead)
+        return;
+    
 /*     pa_log(__FILE__": push-memblock %p\n", chunk); */
     
     i = pa_xmalloc(sizeof(struct item_info));

polyp/sample.c

@@ -121,11 +121,11 @@ double pa_volume_to_dB(pa_volume_t v) {
 }
 
 void pa_bytes_snprint(char *s, size_t l, off_t v) {
-    if (v >= 1024*1024*1024)
+    if (v >= (off_t) 1024*1024*1024)
         snprintf(s, l, "%0.1f GB", (double) v/1024/1024/1024);
-    else if (v >= 1024*1024)
+    else if (v >= (off_t) 1024*1024)
         snprintf(s, l, "%0.1f MB", (double) v/1024/1024);
-    else if (v >= 1024)
+    else if (v >= (off_t) 1024)
         snprintf(s, l, "%0.1f KB", (double) v/1024);
     else
         snprintf(s, l, "%u B", (unsigned) v);