JSR234是高级媒体API,在原有的MMA的基础 上增加了很多Control,目前nokia的s60第三版已经开始支持jsr234,他主要支持对图片、声音等多媒体信息的一些高级处理,下面是使用其对图片缩放的方法:
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9I-wm"st@'H3 /** *//**
wy/Z+dp'G3 * 实现对图片的缩放3GEYE0L|7[r0S7o1z
* @param path String 缩放图片的路径
;k8U;e9R_!Q3 * @param newWidth int 新的宽度3GEYEM6boR;XsH
* @param newHeight int 新的高度3GEYE fo.r'Q$Y]5eN/M:Q
* @return Image 缩放以后得到的Image对象
K,t nxnZ3 */3GEYE W4Bo!g&q9^ul`~5Pi/}
public Image zoomImage(String path,int newWidth,int newHeight)...{3GEYEj'?{3p9A%tV
Image re = null;
M%If*T!E+s+v3 MediaProcessor mp = null;
-k'@ QZ%Uh}q3 ByteArrayOutputStream baos = new ByteArrayOutputStream();3GEYEm+z@"xuT~
try ...{
S1W(OOG9e7@){3 mp = GlobalManager.createMediaProcessor("image/png");3GEYE0O4k*W6NGy b3qB
InputStream in = this.getClass().getResourceAsStream(path);
@\6q,e�YI*w"c'xq!p3 mp.setInput(in,MediaProcessor.UNKNOWN);
U"[^yS2f3 mp.setOutput(baos);3GEYEo4L%m6Hw)[)JQb
ImageTransformControl itc = (ImageTransformControl)mp.getControl("javax.microedition.amms.control.imageeffect.ImageTransformControl");3GEYE Ag;n8M]F L
int sw = itc.getSourceWidth();
-P)zXG8~(k,s3 int sh = itc.getSourceHeight();3GEYE\+a�\g#At C8o
int ow = newWidth;3GEYEG pqulF}
int oh = newHeight;
.iq/e;ViE7Z._$f3 itc.setSourceRect(0,0,sw,sh);
){X1]%[Rr3D3 itc.setTargetSize(ow,oh,0);3GEYE}3by tvQ
itc.setEnabled(true);
.l i6^3|(D3 mp.start();
R$u;P$\A�e3 mp.complete();3GEYE9D6WE8j;w/f
byte b[] = baos.toByteArray();
.x[ Bb/`_3 System.out.println(b.length);3GEYE@x8_Xh(F'Q
int[] ints = new int[b.length / 4];3GEYE ?iQ4P#bx
int intcount, bytecount;3GEYE*f+^O/^8_&?u@([
for (intcount = 0, bytecount = 0; bytecount < b.length; ) ...{3GEYEK9kMH)Hs x
ints[intcount] =3GEYEoI[+kK
(( ((int)(b[bytecount + 0])) << 24) & 0xFF000000) | //A
2ESusRz3 (( ((int)(b[bytecount + 1])) << 16) & 0x00FF0000) | //R3GEYE%iu,Y`9o1T!H
(( ((int)(b[bytecount + 2])) << 8) & 0x0000FF00) | //G
&m+y} {n/a3 (( ((int)(b[bytecount + 3])) & 0x000000FF) ); //B
@ha([C8q3 intcount++;
yoy l6r3 bytecount+=4;3GEYEm5? v-|3B.UR
}3GEYED"m�_@5Cv5k V
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re = Image.createRGBImage(3GEYE[1Z,Xff�?*`|Ki9{
ints, ow, oh, true);3GEYER M6m"K6rAyeNOI7Y
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} catch (MediaException ex) ...{3GEYECKL \lx�@s
ex.printStackTrace();
E#z z0r.FaW.z3 }
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1P2sRq2N3 return re;
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%|5k+G3z*dD^3 在J2ME中可以直接使用这个方法,当然,先确定你的手机 '`$BkQ(a9Sx2C6|,? y3
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JSR234并不是一个一定要实现的JSR ,以前我的做法是自己写一个缩放算法