Upper-layer call for GIF Loading

Package com. ZTE. liaoxy;

Import java. NiO. buffer;
Import java. NiO. bytebuffer;
Import java. NiO. byteorder;
Import java. NiO. floatbuffer;
Import java. NiO. intbuffer;

Import javax. microedition. khronos. EGL. eglconfig;
Import javax. microedition. khronos. opengles. gl10;
Import javax. microedition. khronos. opengles. gl11;

Import Android. content. context;
Import Android. Graphics. Bitmap;
Import Android. Graphics. bitmap. config;
Import Android. Graphics. paint;
Import Android. OpenGL. glsurfaceview. Renderer;
Import Android. OpenGL. Glu;
Import Android. OpenGL. glutils;
Import Android. util. log;

Public class myglrenderer implements Renderer {

Private long mgif = 0;
Private int width;
Private int heigth;
Floatbuffer rectdatabuffer;
Floatbuffer texturedatabuffer;
Float [] rectdata;
Float [] texturedata;
Bitmap bitmap;
/** Texture data handle .*/
Private int mtexturedatahandle;
Final int [] texturehandle = new int [1];
 
 
Static {
System. loadlibrary ("glgif ");
}

 
Public myglrenderer (){
Super ();
// Todo auto-generated constructor stub
Rectdata = new float [] {
250f, 250f, // top right Vertex
2500000f,-2500000f, // bottom right Vertex
-250f, 250f, // top left Vertex
-2500000f,-2500000f, // left bottom Vertex
};
Texturedata = new float [] {
250f, 250f, // top right Vertex
2500000f,-2500000f, // bottom right Vertex
-250f, 250f, // top left Vertex
-2500000f,-2500000f, // left bottom Vertex
};

}
 
 
Protected native long nativecreategif (string path );
Protected native void nativedeletegif (long gifid );
Protected native void nativecopytobitmap (Bitmap bitmap, long gifid, int left, int top );
Protected native int getnativegifwidth (long gifid );
Protected native int getnativegifheigth (long gifid );
@ Override
Public void ondrawframe (gl10 GL ){
// Todo auto-generated method stub
Gl. glclear (gl10.gl _ color_buffer_bit | gl10.gl _ depth_buffer_bit); // clear the cache

Mtexturedatahandle = loadtexture (GL );


Gl. glableclientstate (gl10.gl _ texture_coord_array );
// Gl. glmatrixmode (gl10.gl _ modelview );
// Gl. glloadidentity ();
// Gl. gltranslatef (0.0f, 0.0f,-6.0f );
Gl. glvertexpointer (2, gl10.gl _ float, 0, floatbuffer (rectdata ));
Gl. gltexcoordpointer (2, gl10.gl _ float, 0, floatbuffer (texturedata ));
Gl. glbindtexture (gl10.gl _ texture_2d, mtexturedatahandle );

Gl. gldrawarrays (gl10.gl _ triangle_strip, 0, 4 );

Gl. gldeletetextures (1, texturehandle, 0 );
Gl. glfinish ();


}
 
Public void loadgif (string path ){
If (null = path ){
Throw new illegalargumentexception ("path is null ");
}
Log. I ("gifview", "=== come in loadgif ");
This. replacegifid (this. nativecreategif (PATH ));
}
Protected synchronized void replacegifid (long gifid ){
Log. I ("gifview", "gifid =" + gifid + "This. mgif =" + this. mgif );
If (0! = This. mgif ){
This. nativedeletegif (this. mgif );
}
This. mgif = gifid;
This. width = This. getnativegifwidth (this. mgif );
This. heigth = This. getnativegifheigth (this. mgif );
}
@ Override
Public void onsurfacechanged (gl10 GL, int width, int height ){
// Todo auto-generated method stub
Final float znear = 0.1f;
Final float zfar = 100366f;
Gl. glviewport (0, 0, width, height );
Gl. glmatrixmode (gl11.gl _ projection );
Gl. glloadidentity ();
Glu. gluperspective (GL, 45.0f, (float) width/height, znear, zfar );
Gl. glmatrixmode (gl11.gl _ modelview );
}

@ Override
Public void onsurfacecreated (gl10 GL, eglconfig config ){
// Todo auto-generated method stub

Loadgif ("Data/APP/girl.gif ");
Gl. glable (gl11.gl _ dither );
Gl. gldisable (gl11.gl _ lighting );

// Enable textures. Enable texture Paster
Gl. glable (gl11.gl _ texture_2d );
Gl. gltexenvf (gl11.gl _ texture_env, gl11.gl _ texture_env_color, gl11.gl _ replace );

// Set up state for multitexture operations. Since multitexture is
// Currently used
// Only for layered crossfades the needed State can be factored out
// One-time
// Initialization. This section may need to be folded into drawmixed2d ()
// If multitexture
// Is used for other effects.

// Enable vertex Arrays
Gl. glableclientstate (gl11.gl _ vertex_array );

// Enable depth test.
Gl. glable (gl11.gl _ depth_test );
Gl. gldepthfunc (gl11.gl _ lequal );

// Set the blend function for premultiplied Alpha.
Gl. glable (gl10.gl _ blend );
Gl. glblendfunc (gl11.gl _ src_alpha, gl11.gl _ one_minus_src_alpha );

// Set the background color.
Gl. glclearcolor (0.0f, 0.0f, 0.0f, 0.0f );
Gl. glclear (gl11.gl _ color_buffer_bit );

}
 
Public int loadtexture (gl10 GL)
{
Gl. glgentextures (1, texturehandle, 0 );
Final long gifid = This. mgif;
If (texturehandle [0]! = 0 & gifid! = 0)
{


Bitmap = bitmap. createbitmap (this. Width, this. heigth, config. argb_8888 );

This. nativecopytobitmap (bitmap, gifid, 50, 50 );

// Bind to the texture in OpenGL
Gl. glbindtexture (gl10.gl _ texture_2d, texturehandle [0]);

// Set texture ing attributes
Gl. gltexparameterf (gl10.gl _ texture_2d, gl10.gl _ texture_min_filter,
Gl10.gl _ nearest );
Gl. gltexparameterf (gl10.gl _ texture_2d, gl10.gl _ texture_mag_filter,
Gl10.gl _ nearest );
// Generate texture ing
Glutils. teximage2d (gl10.gl _ texture_2d, 0, bitmap, 0 );
// Release bitmap Resources
Bitmap. Recycle ();
}

If (texturehandle [0] = 0)
{
Throw new runtimeexception ("error loading texture .");
}
Return texturehandle [0];

}
Public buffer intbuffer (INT [] data)
{
Intbuffer;
Bytebuffer bbuffer = bytebuffer. allocatedirect (data. length * 4 );
// Both int and float occupy 4 bytes
Bbuffer. Order (byteorder. nativeorder ());
Intbuffer = bbuffer. asintbuffer ();
Intbuffer. Put (data );
Intbuffer. Position (0 );
Return intbuffer;
}
Public buffer floatbuffer (float [] data)
{
Floatbuffer fbuffer;
Bytebuffer bbuffer = bytebuffer. allocatedirect (data. length * 4 );
Bbuffer. Order (byteorder. nativeorder ());
Fbuffer = bbuffer. asfloatbuffer ();
Fbuffer. Put (data );
Fbuffer. Position (0 );
Return fbuffer;
}

 
}