From eef7400dc4c55adf166a09142d859900d537c803 Mon Sep 17 00:00:00 2001
From: Alexey Yakovenko <wakeroid@gmail.com>
Date: Sat, 20 Mar 2010 19:01:38 +0100
Subject: moved eq reconfiguration to separate thread

---
 plugins/supereq/supereq.c | 47 +++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 41 insertions(+), 6 deletions(-)

(limited to 'plugins/supereq')

diff --git a/plugins/supereq/supereq.c b/plugins/supereq/supereq.c
index d3509312..f9f98940 100644
--- a/plugins/supereq/supereq.c
+++ b/plugins/supereq/supereq.c
@@ -29,40 +29,73 @@ void equ_clearbuf(int bps,int srate);
 void equ_init(int wb);
 void equ_quit(void);
 
-float last_srate = 0;
-int last_nch = 0, last_bps = 0;
-float lbands[18] = {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
-float rbands[18] = {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
-void *paramsroot;
+static float last_srate = 0;
+static int last_nch = 0, last_bps = 0;
+static float lbands[18] = {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
+static float rbands[18] = {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
+static void *paramsroot;
+
+static int params_changed = 0;
+static intptr_t tid = 0;
+static uintptr_t mutex = 0;
 
 int
 supereq_plugin_start (void) {
     equ_init (14);
     paramsroot = paramlist_alloc ();
+    last_srate = 44100;
+    last_nch = 2;
+    last_bps = 16;
+    equ_makeTable (lbands, rbands, paramsroot, last_srate);
+    equ_clearbuf (last_bps,last_srate);
+    mutex = deadbeef->mutex_create ();
     return 0;
 }
 
 int
 supereq_plugin_stop (void) {
+    if (tid) {
+        deadbeef->thread_join (tid);
+        deadbeef->mutex_free (mutex);
+        mutex = 0;
+    }
     equ_quit ();
     paramlist_free (paramsroot);
     return 0;
 }
 
+void
+supereq_regen_table_thread (void *param) {
+    void *params = paramlist_alloc ();
+    deadbeef->mutex_lock (mutex);
+    equ_makeTable (lbands, rbands, params, last_srate);
+    paramlist_free (paramsroot);
+    paramsroot = params;
+    deadbeef->mutex_unlock (mutex);
+    tid = 0;
+}
 
 int
 supereq_process_int16 (int16_t *samples, int nsamples, int nch, int bps, int srate) {
 	if ((nch != 1 && nch != 2) || (bps != 8 && bps != 16 && bps != 24)) return nsamples;
+    if (params_changed && !tid) {
+        tid = deadbeef->thread_start (supereq_regen_table_thread, NULL);
+        params_changed = 0;
+    }
 	if (last_srate != srate) {
+        deadbeef->mutex_lock (mutex);
         equ_makeTable (lbands, rbands, paramsroot, srate);
 		last_srate = srate;
 		last_nch = nch;
 		last_bps = bps;
+        deadbeef->mutex_unlock (mutex);
 		equ_clearbuf(bps,srate);
     }
 	else if (last_nch != nch || last_bps != bps) {
+        deadbeef->mutex_lock (mutex);
 		last_nch = nch;
 		last_bps = bps;
+        deadbeef->mutex_unlock (mutex);
 		equ_clearbuf(bps,srate);
     }
 	equ_modifySamples((char *)samples,nsamples,nch,bps);
@@ -76,8 +109,10 @@ supereq_get_band (int band) {
 
 void
 supereq_set_band (int band, float value) {
-    last_srate = 0;
+    deadbeef->mutex_lock (mutex);
     lbands[band] = rbands[band] = value;
+    deadbeef->mutex_unlock (mutex);
+    params_changed = 1;
 }
 
 static DB_supereq_dsp_t plugin = {
-- 
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