From c451b1fe262fe39515f14ce82f2a590004e96d34 Mon Sep 17 00:00:00 2001
From: alex <alex@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Fri, 16 Nov 2001 22:59:07 +0000
Subject: added support for setting color values

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2938 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libmpdemux/tv.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)

(limited to 'libmpdemux/tv.c')

diff --git a/libmpdemux/tv.c b/libmpdemux/tv.c
index 9c93624e38..685b70e01a 100644
--- a/libmpdemux/tv.c
+++ b/libmpdemux/tv.c
@@ -284,4 +284,86 @@ int tv_uninit(tvi_handle_t *tvh)
 {
     return(tvh->functions->uninit(tvh->priv));
 }
+
+/* utilities for mplayer (not mencoder!!) */
+int tv_set_color_options(tvi_handle_t *tvh, int opt, int value)
+{
+    tvi_functions_t *funcs = tvh->functions;
+
+    switch(opt)
+    {
+	case TV_COLOR_BRIGHTNESS:
+	    if (value == 50)
+		value = 32768;
+	    if (value > 50)
+	    {
+		value *= 100;
+		value += 32768;
+	    }
+	    if (value < 50)
+	    {
+		int i;
+		value *= 100;
+		i = value;
+		value = 32768 - i;
+	    }
+	    funcs->control(tvh->priv, TVI_CONTROL_VID_SET_BRIGHTNESS, &value);
+	    break;
+	case TV_COLOR_HUE:
+	    if (value == 50)
+		value = 32768;
+	    if (value > 50)
+	    {
+		value *= 100;
+		value += 32768;
+	    }
+	    if (value < 50)
+	    {
+		int i;
+		value *= 100;
+		i = value;
+		value = 32768 - i;
+	    }
+	    funcs->control(tvh->priv, TVI_CONTROL_VID_SET_HUE, &value);
+	    break;
+	case TV_COLOR_SATURATION:
+	    if (value == 50)
+		value = 32512;
+	    if (value > 50)
+	    {
+		value *= 100;
+		value += 32512;
+	    }
+	    if (value < 50)
+	    {
+		int i;
+		value *= 100;
+		i = value;
+		value = 32512 - i;
+	    }
+	    funcs->control(tvh->priv, TVI_CONTROL_VID_SET_SATURATION, &value);
+	    break;
+	case TV_COLOR_CONTRAST:
+	    if (value == 50)
+		value = 27648;
+	    if (value > 50)
+	    {
+		value *= 100;
+		value += 27648;
+	    }
+	    if (value < 50)
+	    {
+		int i;
+		value *= 100;
+		i = value;
+		value = 27648 - i;
+	    }
+	    funcs->control(tvh->priv, TVI_CONTROL_VID_SET_CONTRAST, &value);
+	    break;
+	default:
+	    mp_msg(MSGT_TV, MSGL_WARN, "Unknown color option (%d) specified!\n", opt);
+    }
+    
+    return(1);
+}
 #endif /* USE_TV */
-- 
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