From 6e6d3acfa9b3a9d6d9bc9a9697202af62e3c9f92 Mon Sep 17 00:00:00 2001
From: zuxy <zuxy@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sun, 17 Jun 2007 12:18:13 +0000
Subject: Add AF_CONTROL_PAN_BALANCE control

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23571 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libaf/af_pan.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'libaf/af_pan.c')

diff --git a/libaf/af_pan.c b/libaf/af_pan.c
index 12955897d7..7d25e1afde 100644
--- a/libaf/af_pan.c
+++ b/libaf/af_pan.c
@@ -111,6 +111,23 @@ static int control(struct af_instance_s* af, int cmd, void* arg)
   case AF_CONTROL_PAN_NOUT | AF_CONTROL_GET:
     *(int*)arg = af->data->nch;
     return AF_OK;
+  case AF_CONTROL_PAN_BALANCE | AF_CONTROL_SET:{
+    float val = *(float*)arg;
+    if (s->nch)
+      return AF_ERROR;
+    if (af->data->nch >= 2) {
+      s->level[0][0] = min(1.f, 1.f - val);
+      s->level[0][1] = max(0.f, val);
+      s->level[1][0] = max(0.f, -val);
+      s->level[1][1] = min(1.f, 1.f + val);
+    }
+    return AF_OK;
+  }
+  case AF_CONTROL_PAN_BALANCE | AF_CONTROL_GET:
+    if (s->nch)
+      return AF_ERROR;
+    *(float*)arg = s->level[0][1] - s->level[1][0];
+    return AF_OK;
   }
   return AF_UNKNOWN;
 }
-- 
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