/**
* Init CameraManager gl texture id, camera SurfaceTexture, bind to EXTERNAL_OES, and redirect
* camera preview to the surfaceTexture.
*
* @throws IOException when camera cannot be open
*/
private void initCameraSurface() throws IOException {
// Gen openGL texture id
int texture[] = new int[1];
GLES10.glGenTextures(1, texture, 0);
mCameraTextureId = texture[0];
if (mCameraTextureId == 0) {
throw new RuntimeException("Cannot create openGL texture (initCameraSurface())");
}
// Camera preview is redirected to SurfaceTexture.
// SurfaceTexture works with TEXTURE_EXTERNAL_OES, so we bind this textureId so that camera
// will automatically fill it with its video.
GLES10.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, mCameraTextureId);
// Can't do mipmapping with camera source
GLES10.glTexParameterf(
GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES10.GL_TEXTURE_MIN_FILTER, GLES10.GL_LINEAR);
GLES10.glTexParameterf(
GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES10.GL_TEXTURE_MAG_FILTER, GLES10.GL_LINEAR);
// Clamp to edge is the only option
GLES10.glTexParameterf(
GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES10.GL_TEXTURE_WRAP_S, GLES10.GL_CLAMP_TO_EDGE);
GLES10.glTexParameterf(
GLES11Ext.GL_TEXTURE_EXTERNAL_OES, GLES10.GL_TEXTURE_WRAP_T, GLES10.GL_CLAMP_TO_EDGE);
// create a SurfaceTexture associated to this openGL texture...
mCameraSurfaceTex = new SurfaceTexture(mCameraTextureId);
mCameraSurfaceTex.setDefaultBufferSize(640, 480);
// ... and redirect camera preview to it
mCameraManager.setPreviewSurface(mCameraSurfaceTex);
// Setup viewfinder
mViewFinder = new TexturedPlane(mViewFinderSize);
mViewFinder.setTexture(
BitmapDecoder.safeDecodeBitmap(mContext.getResources(), VIEWFINDER_RESSOURCE_ID));
mViewFinder.recycleTexture();
mViewFinder.translate(0, 0, VIEWFINDER_DISTANCE);
mViewFinder.setAlpha(VIEWFINDER_ATTENUATION_ALPHA);
}
private void reinitCameraSurface() throws IOException {
// for an unknown reason, the camera preview is not in correct direction by default. Need to
// rotate it
final int screenRotation =
((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay()
.getRotation();
mCameraRoll = 270;
mTargetsLock.lock();
switch (screenRotation) {
case Surface.ROTATION_0:
mCameraRoll += 0.0f;
mContours = mContours34;
break;
case Surface.ROTATION_90:
mCameraRoll += 90.0f;
mContours = mContours43;
break;
case Surface.ROTATION_180:
mCameraRoll += 180.0f;
mContours = mContours34;
break;
default:
mCameraRoll += 270.0f;
mContours = mContours43;
break;
}
;
mTargetsLock.unlock();
mCameraRoll %= 360;
// create a new TexturedPlane, that holds the camera texture.
mCameraSurface = new TexturedPlane(mCameraSize, CAMERA_RATIO);
mCameraSurface.setTexture(mCameraTextureId);
mCameraSurface.setAlpha(CAMERA_SURFACE_ALPHA);
// for unknown reason, the preview is not in correct orientation
mCameraSurface.rotate(0, 0, mCameraRoll);
mCameraSurface.translate(0, 0, CAMERA_DISTANCE);
}
@Override
public void onDrawFrame(GL10 gl) {
// draws the skybox
if (mUseSkybox) super.onDrawFrame(gl);
// refresh camera texture
if (mCameraFrameAvaible) {
mCameraSurfaceTex.updateTexImage();
mCameraFrameAvaible = false;
}
mCameraSurfaceTex.setOnFrameAvailableListener(this);
// draw camera surface
gl.glEnable(GLES11Ext.GL_TEXTURE_EXTERNAL_OES);
mCameraSurface.draw(gl, mViewMatrix);
gl.glDisable(GLES11Ext.GL_TEXTURE_EXTERNAL_OES);
// draw the viewFinder
mViewFinder.draw(gl, mViewMatrix);
// launch memory cleanup??
Runtime info = Runtime.getRuntime();
long freeMem = info.freeMemory() / 1048576L;
if (freeMem < MEMORY_CLEANUP_THRESHOLD) mHasToFreeMemory = true;
else mHasToFreeMemory = false;
// the snapshots that are in FOV
mSnapshotsLock.lock();
for (Snapshot3D snap : mSnapshots) {
float distance = this.getSnapshotDisnance(snap);
if (mHasToFreeMemory && distance > AUTO_UNLOADTEXTURE_ANGLE) {
snap.unloadGLTexture(gl);
} else if (this.getSnapshotDisnance(snap) < AUTO_LOADTEXTURE_ANGLE) {
snap.loadGLTexture(gl);
}
if (distance > 120.0f) snap.setVisible(false);
else {
snap.setVisible(true);
snap.draw(gl, super.getRotationMatrix());
}
}
mSnapshotsLock.unlock();
// ... and then all markers with newly computed alpha
float d;
// draw markers
if (mUseMarkers) {
mTargetsLock.lock();
for (Snapshot3D dot : mDots) {
d = getSnapshotDisnance(dot);
if (d > 60.0f) {
dot.setVisible(false);
} else {
dot.setVisible(true);
// Set alpha based on camera distance to the point
d = d * mMarkersAttenuationFactor / 360.0f;
d = (d > 1.0f ? 1.0f : d);
dot.setAlpha(1.0f - d);
dot.draw(gl, super.getRotationMatrix());
}
}
mTargetsLock.unlock();
}
if (mUseContours) {
mTargetsLock.lock();
for (Snapshot3D contour : mContours) {
d = getSnapshotDisnance(contour);
if (d > 60.0f) {
contour.setVisible(false);
} else {
contour.setVisible(true);
// Set alpha based on camera distance to the point
d = d * mMarkersAttenuationFactor / 360.0f;
d = (d > 1.0f ? 1.0f : d);
contour.setAlpha(1.0f - d);
contour.draw(gl, super.getRotationMatrix());
}
}
mTargetsLock.unlock();
}
}
/* ********
* ACCESSORS
* ********/
public void setCamPreviewVisible(boolean visible) {
mCameraSurface.setVisible(visible);
}