public void read_param(HttpServletRequest request, HttpServletResponse response)
throws IOException {
String uuid = this.getStringParam(request, "uuid", null);
final Map<String, String> result = new HashMap<String, String>();
result.put("status", "error");
if (uuid == null) {
result.put("msg", "-2:Parameter error");
} else {
ASC100Client ascClient = server.getMonitorClient(uuid);
if (ascClient == null) {
result.put("msg", "1$Not found base station");
} else {
result.put("status", "timeout");
ImageClientListener l =
new AbstractImageListener() {
public void message(ImageClientEvent event) {
if (event.data.len == 32) {
ByteBuffer b = event.data.inBuffer.asReadOnlyBuffer();
/*
"X固定为2表示读取命令，Y固定为4，表示读取当前设备参数，
A(通道1模式)，B(通道2模式)，C(亮度)，D(对比度)，E(饱和度)，F(色调)，
G(敏感度)，H(压缩比)，I(分辨率)，J(告警图片数量)，K(门禁联动开关设置)，
L(串口流控参数(L1，L2)，(T1，T2))，M(错误机制设置(T1，T2)，(Cnt1))，N图片策略(单字节), O(通道3模式)，P(通道4模式)，
(其它字节预留)
"*/ byte b1 = b.get();
byte b2 = b.get();
if (b1 != 2 || b2 != 4) return;
result.put("status", "ok");
result.put("mode_ch1", String.format("%x", b.get()));
result.put("mode_ch2", String.format("%x", b.get()));
int d = b.get();
result.put("color_x", (d < 0 ? d + 256 : d) + "");
d = b.get();
result.put("color_y", (d < 0 ? d + 256 : d) + "");
d = b.get();
result.put("color_z", (d < 0 ? d + 256 : d) + "");
d = b.get();
result.put("color_a", (d < 0 ? d + 256 : d) + "");
d = b.get();
result.put("mg_ch", (d < 0 ? d + 256 : d) + "");
d = b.get();
result.put("zip_rate", (d < 0 ? d + 256 : d) + "");
// 分辨率
d = b.get();
result.put("fbl", (d < 0 ? d + 256 : d) + "");
d = b.get();
result.put("image_count", (d < 0 ? d + 256 : d) + "");
// 门禁联动
d = b.get();
result.put("mjld", (d < 0 ? d + 256 : d) + "");
b.get();
b.get();
b.get();
b.get();
b.get();
b.get();
b.get();
b.get();
// 空5个字节,兼容老设备
b.get();
b.get();
b.get();
b.get();
b.get();
result.put("mode_ch3", String.format("%x", b.get()));
result.put("mode_ch4", String.format("%x", b.get()));
synchronized (this) {
this.notifyAll();
}
}
};
};
ascClient.addListener(l);
try {
if (ascClient.readParam()) {
synchronized (l) {
l.wait(1000 * 10);
}
} else {
result.put("status", "image");
}
} catch (InterruptedException e) {
} finally {
ascClient.removeListener(l);
}
}
}
JSONValue.writeJSONString(result, response.getWriter());
}
