r260 - mga_vid/trunk/mga_vid.h

Author: attila
Date: Sun Oct 21 16:37:25 2007
New Revision: 260

Log:
add comments to mga_vid.h


Modified:
   mga_vid/trunk/mga_vid.h

Modified: mga_vid/trunk/mga_vid.h
==============================================================================
--- mga_vid/trunk/mga_vid.h	(original)
+++ mga_vid/trunk/mga_vid.h	Sun Oct 21 16:37:25 2007
@@ -35,12 +35,14 @@ uint32_t frame_size;
 uint32_t num_frames;
 } mga_vid_config_t;
 
+/* supported FOURCCs */
 #define MGA_VID_FORMAT_YV12 0x32315659
 #define MGA_VID_FORMAT_IYUV (('I'<<24)|('Y'<<16)|('U'<<8)|'V')
 #define MGA_VID_FORMAT_I420 (('I'<<24)|('4'<<16)|('2'<<8)|'0')
 #define MGA_VID_FORMAT_YUY2 (('Y'<<24)|('U'<<16)|('Y'<<8)|'2')
 #define MGA_VID_FORMAT_UYVY (('U'<<24)|('Y'<<16)|('V'<<8)|'Y')
 
+/* ioctl commands */
 #define MGA_VID_CONFIG    _IOR('J', 1, mga_vid_config_t)
 #define MGA_VID_ON        _IO ('J', 2)
 #define MGA_VID_OFF       _IO ('J', 3)
@@ -48,12 +50,14 @@ uint32_t num_frames;
 #define MGA_VID_GET_LUMA _IOR('J', 5, int)
 #define MGA_VID_SET_LUMA _IOR('J', 6, int)
 
+/* card identifiers */
 #define MGA_G200 0x1234
 #define MGA_G400 0x5678
 // currently unused, G450 are mapped to MGA_G400
 // #define MGA_G450 0x9ABC
 #define MGA_G550 0xDEF0
 
+/* version of the mga_vid_config struct */
 #define MGA_VID_VERSION 0x0201
 
 #endif