update README

diff --git a/README b/README
index adcee22..e544431 100644 (file)
--- a/README
+++ b/README
@@ -1,8 +1,43 @@
-nam
-===
+================================================================================
+Stagefright Plugins for Android
+================================================================================
 
-Enhance the Android multimedia framework providing additional Plugins for user interaction
+1. Enhance the Android multimedia framework providing additional Plugins for
+   user interaction
+2. FFmpeg provides demuxers and av codecs;
+3. SDL provides basic library: thread, mutex, and timer, but all of sdl should 
+   be removed;
+4. NamExtractor is a extractor plugin, it would be loaded by Stagefright when 
+   Stagefright started.
+5. NamExtractor will load FFmpegExtractor, MplayerExtractor and VLCExtractor.
+   but only FFmpegExtractor is implemented now.
+6. FFmpegExtractor is the reference to "ffmpeg/ffplay" to achieve. 
+
+================================================================================
+Requirements
+================================================================================
+
+CyanogenMod 9.x (Ice Cream Sandwich)
+http://wiki.cyanogenmod.com/wiki/Galaxy_Nexus_%28GSM%29:_Compile_CyanogenMod_%28Linux%29
+
+FFMPEG-0.12
+http://ffmpeg.org
+
+SDL-1.3.0
+http://www.libsdl.org/tmp
+
+================================================================================
+ How to build
+================================================================================
+
+================================================================================
+ Additional documentation
+================================================================================
+
+================================================================================
+ Known issues
+================================================================================
 
 If you need help with the library, or just want to discuss nam related issues, 
-you can contact me: Michael Chen (omxcodec@gmail.com), thx!
+you can contact me: Michael Chen (omxcodec@gmail.com),