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Issue 141 -- add flash control for JSR 234 phones

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git-svn-id: https://zxing.googlecode.com/svn/trunk@839 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen 2009-02-03 10:15:23 +00:00
parent 270edc5785
commit 07db37e997
4 changed files with 42 additions and 13 deletions
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49
javame/src/com/google/zxing/client/j2me/AdvancedMultimediaManager.java
View file

@ -19,8 +19,10 @@ package com.google.zxing.client.j2me;
import javax.microedition.amms.control.camera.ExposureControl;
import javax.microedition.amms.control.camera.FocusControl;
import javax.microedition.amms.control.camera.ZoomControl;
import javax.microedition.amms.control.camera.FlashControl;
import javax.microedition.media.Controllable;
import javax.microedition.media.MediaException;
import javax.microedition.media.Control;
/**
* <p>Implementation suitable for JSR-234 phones which takes advantage of advanced camera
@ -34,13 +36,11 @@ final class AdvancedMultimediaManager implements MultimediaManager {
private static final int MAX_ZOOM = 200;
private static final long FOCUS_TIME_MS = 750L;
private static final String DESIRED_METERING = "center-weighted";
private static final int DESIRED_FLASH = FlashControl.AUTO;
public void setFocus(Controllable player) {
FocusControl focusControl = (FocusControl)
player.getControl("javax.microedition.amms.control.camera.FocusControl");
if (focusControl == null) {
focusControl = (FocusControl) player.getControl("FocusControl");
}
FocusControl focusControl =
(FocusControl) getControl(player, "javax.microedition.amms.control.camera.FocusControl");
if (focusControl != null) {
try {
if (focusControl.isMacroSupported() && !focusControl.getMacro()) {
@ -62,10 +62,7 @@ final class AdvancedMultimediaManager implements MultimediaManager {
}
public void setZoom(Controllable player) {
ZoomControl zoomControl = (ZoomControl) player.getControl("javax.microedition.amms.control.camera.ZoomControl");
if (zoomControl == null) {
zoomControl = (ZoomControl) player.getControl("ZoomControl");
}
ZoomControl zoomControl = (ZoomControl) getControl(player, "javax.microedition.amms.control.camera.ZoomControl");
if (zoomControl != null) {
// We zoom in if possible to encourage the viewer to take a snapshot from a greater distance.
// This is a crude way of dealing with the fact that many phone cameras will not focus at a
@ -84,10 +81,7 @@ final class AdvancedMultimediaManager implements MultimediaManager {
public void setExposure(Controllable player) {
ExposureControl exposureControl =
(ExposureControl) player.getControl("javax.microedition.amms.control.camera.ExposureControl");
if (exposureControl == null) {
exposureControl = (ExposureControl) player.getControl("ExposureControl");
}
(ExposureControl) getControl(player, "javax.microedition.amms.control.camera.ExposureControl");
if (exposureControl != null) {
int[] supportedISOs = exposureControl.getSupportedISOs();
@ -118,4 +112,33 @@ final class AdvancedMultimediaManager implements MultimediaManager {
}
}
public void setFlash(Controllable player) {
FlashControl flashControl =
(FlashControl) getControl(player, "javax.microedition.amms.control.camera.FlashControl");
if (flashControl != null) {
int[] supportedFlash = flashControl.getSupportedModes();
if (supportedFlash != null && supportedFlash.length > 0) {
for (int i = 0; i < supportedFlash.length; i++) {
if (supportedFlash[i] == DESIRED_FLASH) {
try {
flashControl.setMode(DESIRED_FLASH);
} catch (IllegalArgumentException iae) {
// continue
}
break;
}
}
}
}
}
private static Control getControl(Controllable player, String fullName) {
Control control = player.getControl(fullName);
if (control == null) {
String shortName = fullName.substring(fullName.lastIndexOf('.') + 1);
control = player.getControl(shortName);
}
return control;
}
}

3
javame/src/com/google/zxing/client/j2me/DefaultMultimediaManager.java
View file

@ -34,4 +34,7 @@ final class DefaultMultimediaManager implements MultimediaManager {
public void setExposure(Controllable player) {
}
public void setFlash(Controllable player) {
}
}

2
javame/src/com/google/zxing/client/j2me/MultimediaManager.java
View file

@ -34,4 +34,6 @@ interface MultimediaManager {
void setExposure(Controllable player);
void setFlash(Controllable player);
}

1
javame/src/com/google/zxing/client/j2me/ZXingMIDlet.java
View file

@ -94,6 +94,7 @@ public final class ZXingMIDlet extends MIDlet {
MultimediaManager multimediaManager = buildMultimediaManager();
multimediaManager.setZoom(player);
multimediaManager.setExposure(player);
multimediaManager.setFlash(player);
videoControl = (VideoControl) player.getControl("VideoControl");
canvas = new VideoCanvas(this);
canvas.setFullScreenMode(true);