From cc67e49563096e4367881e8bbe4554f1a7d21595 Mon Sep 17 00:00:00 2001
From: neonloop
Date: Sun, 14 Mar 2021 18:54:30 +0000
Subject: Adds frameskip based on free audio buffer space

---
 plugins/dfsound/oss.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

(limited to 'plugins/dfsound/oss.c')

diff --git a/plugins/dfsound/oss.c b/plugins/dfsound/oss.c
index 6b1cb4a..67ba4c9 100644
--- a/plugins/dfsound/oss.c
+++ b/plugins/dfsound/oss.c
@@ -128,25 +128,26 @@ static void oss_finish(void)
 }
 
 ////////////////////////////////////////////////////////////////////////
-// GET BUFFERED STATUS
+// GET BUFFER AVAILABLE
 ////////////////////////////////////////////////////////////////////////
 
-static int oss_busy(void)
+static float oss_capacity(void)
 {
  audio_buf_info info;
- unsigned long l;
 
- if(oss_audio_fd == -1) return 1;
- if(ioctl(oss_audio_fd,SNDCTL_DSP_GETOSPACE,&info)==-1)
-  l=0;
- else
-  {
-   if(info.fragments<(info.fragstotal>>1))             // can we write in at least the half of fragments?
-        l=1;                                           // -> no? wait
-   else l=0;                                           // -> else go on
-  }
+ if(oss_audio_fd == -1) return 0;
+ if(ioctl(oss_audio_fd,SNDCTL_DSP_GETOSPACE,&info)==-1) return 0;
+ if(info.fragstotal == 0) return 0;
+ return (float)info.fragments / info.fragstotal;
+}
 
- return l;
+////////////////////////////////////////////////////////////////////////
+// GET BUFFERED STATUS
+////////////////////////////////////////////////////////////////////////
+
+static int oss_busy(void)
+{
+ return oss_capacity() < 0.5;
 }
 
 ////////////////////////////////////////////////////////////////////////
@@ -186,4 +187,5 @@ void out_register_oss(struct out_driver *drv)
 	drv->finish = oss_finish;
 	drv->busy = oss_busy;
 	drv->feed = oss_feed;
+  drv->capacity = oss_capacity;
 }
-- 
cgit v1.2.3