public static File InternalTakePicture(int num = 0)
{
var DIRECTORY_DCIM = global::android.os.Environment.DIRECTORY_DCIM;
var path = global::android.os.Environment.getExternalStoragePublicDirectory(DIRECTORY_DCIM).getAbsolutePath();
path += "/Camera";
//var SAVE_PATH = android.os.Environment.getExternalStoragePublicDirectory(
// android.os.Environment.DIRECTORY_PICTURES
//) + "/";
var n = DateTime.Now;
var f = new File(path + "/shot" + n.Ticks + ".jpg");
//I/System.Console(31472): enter TakePicture
//W/CameraService( 128): CameraService::connect X (pid 31472) rejected (existing client).
//I/System.Console(31472): error takePicture { Message = Fail to connect to camera service, StackTrace = java.lang.RuntimeException: Fail to connect to camera service
//I/System.Console(31472): at android.hardware.Camera.native_setup(Native Method)
//I/System.Console(31472): at android.hardware.Camera.<init>(Camera.java:340)
//I/System.Console(31472): at android.hardware.Camera.open(Camera.java:302)
var camera = android.hardware.Camera.open(num);
// W/CameraService( 128): CameraService::connect X (pid 2499) rejected (existing client).
//D/dalvikvm( 2499): GC_CONCURRENT freed 873K, 12% free 7525K/8544K, paused 4ms+4ms, total 59ms
//D/dalvikvm( 2499): WAIT_FOR_CONCURRENT_GC blocked 14ms
//I/System.Console( 2499): error takePicture { Message = Fail to connect to camera service, StackTrace = java.lang.RuntimeException: Fail to connect to camera service
//I/System.Console( 2499): at android.hardware.Camera.native_setup(Native Method)
//I/System.Console( 2499): at android.hardware.Camera.<init>(Camera.java:340)
//I/System.Console( 2499): at android.hardware.Camera.open(Camera.java:302)
//I/System.Console( 2499): at CameraExperiment.foo.InternalTakePicture(foo.java:65)
var p = camera.getParameters();
p.setRotation(0);
//camera.stopFaceDetection();
var s = p.getSupportedPictureSizes();
var min = default(android.hardware.Camera.Size);
for (int i = 0; i < s.size(); i++)
{
var size = (android.hardware.Camera.Size)s.get(i);
// I/System.Console( 6058): before takePicture { f = /mnt/sdcard/Pictures/shot.jpg }
//I/System.Console( 6058): { size = android.hardware.Camera$Size@4fde180 }
System.Console.WriteLine(new { size.width, size.height });
if (min == null)
min = size;
else if (min.width > size.width)
min = size;
}
System.Console.WriteLine("before setPictureSize ");
p.setPictureSize(min.width, min.height);
//E/CameraHardwareSec( 84): android::status_t android::CameraHardwareSec::setSceneModeParameter(const android::CameraParameters&): unmatched focus_mode(continuous-picture)
//E/CameraHardwareSec( 84): virtual android::status_t android::CameraHardwareSec::setParameters(const android::CameraParameters&): Failed to setting scene mode
var focusModes = p.getSupportedFocusModes();
var NextFocus = android.hardware.Camera.Parameters.FOCUS_MODE_FIXED;
for (int i = 0; i < focusModes.size(); i++)
{
var focusMode = (string)focusModes.get(i);
if (focusMode == android.hardware.Camera.Parameters.FOCUS_MODE_INFINITY)
NextFocus = android.hardware.Camera.Parameters.FOCUS_MODE_INFINITY;
System.Console.WriteLine(new { focusMode });
}
// I/System.Console(31232): before setPictureSize
//I/System.Console(31232): { focusMode = fixed }
//I/System.Console(31232): before setFocusMode
//E/NvOmxCameraSettingsParser( 128): Failed substring capabilities check, unsupported parameter: 'infinity', original: fixed
//E/NvOmxCameraSettingsParser( 128): extractChanges: Invalid parameter!
//E/NvOmxCamera( 128): setParameters: Invalid parameters
//I/System.Console(31232): error takePicture { Message = setParameters failed, StackTrace = java.lang.RuntimeException: setParameters failed
// { focusMode = auto }
// { focusMode = infinity }
// { focusMode = macro }
// before setFocusMode
//9): android::status_t android::CameraHardwareSec::setSceneModeParameter(const android::CameraParameters&): unmatched focus_mode(fixed)
//9): virtual android::status_t android::CameraHardwareSec::setParameters(const android::CameraParameters&): Failed to setting scene mode
// error takePicture { Message = setParameters failed, StackTrace = java.lang.RuntimeException: setParameters failed
// at android.hardware.Camera.native_setParameters(Native Method)
// at android.hardware.Camera.setParameters(Camera.java:950)
// at CameraExperiment.foo.InternalTakePicture(foo.java:105)
// E/SecCamera( 84): ERR(int android::fimc_v4l2_s_ctrl(int, unsigned int, unsigned int)):VIDIOC_S_CTRL(id = 0x800005b (91), value = 0) failed ret = -1
//E/SecCamera( 84): ERR(int android::SecCamera::setFaceDetect(int)):Fail on V4L2_CID_CAMERA_FACE_DETECTION
//E/SecCamera( 84): ERR(int android::fimc_v4l2_s_ctrl(int, unsigned int, unsigned int)):VIDIOC_S_CTRL(id = 0x8000063 (99), value = 6) failed ret = -1
//E/SecCamera( 84): ERR(int android::SecCamera::setFocusMode(int)):Fail on V4L2_CID_CAMERA_FOCUS_MODE
//E/CameraHardwareSec( 84): android::status_t android::CameraHardwareSec::setSceneModeParameter(const android::CameraParameters&): mSecCamera->setFocusMode(6) fail
//E/CameraHardwareSec( 84): virtual android::status_t android::CameraHardwareSec::setParameters(const android::CameraParameters&): Failed to setting scene mode
//E/SecCamera( 84): ERR(int android::fimc_v4l2_s_ctrl(int, unsigned int, unsigned int)):VIDIOC_S_CTRL(id = 0x800006c (108), value = 1) failed ret = -1
//E/SecCamera( 84): ERR(int android::SecCamera::setBatchReflection()):Fail on V4L2_CID_CAMERA_BATCH_REFLECTION
//E/CameraHardwareSec( 84): ERR(virtual android::status_t android::CameraHardwareSec::setParameters(const android::CameraParameters&)):Fail on mSecCamera->setBatchCmd
System.Console.WriteLine("before setFocusMode " + new { NextFocus });
//p.setFocusMode(android.hardware.Camera.Parameters.FOCUS_MODE_INFINITY);
p.setFocusMode(NextFocus);
// E/SecCamera( 84): ERR(int android::fimc_poll(pollfd*)):No data in 10 secs..
//I/ShotSingle( 84): CAMERA_MSG_COMPRESSED_IMAGE
camera.setParameters(p);
// http://stackoverflow.com/questions/9744790/android-possible-to-camera-capture-without-a-preview
var b = new EventWaitHandle(false, EventResetMode.ManualReset);
System.Console.WriteLine("before startPreview ");
Action done = delegate { };
try
{
// #5 java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
(ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext as Activity).With(
aa =>
{
aa.runOnUiThread(
new f
{
y = delegate
{
try
{
// D/Camera ( 2464): app passed NULL surface
System.Console.WriteLine("before getHolder ");
// the nexus 7 and droid x both don't support the passing of a dummy surfaceview to a camera object. Your response that all camera things must created in the activity is false. I was able to instantiate a camera within a thread by passing it a view just fine.
// here, the unused surface view and holder
var dummy = new SurfaceView(ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext);
// missing for android 2.2
//dummy.setScaleX(0f);
//dummy.setScaleY(0f);
var h = dummy.getHolder();
// http://developer.android.com/reference/android/view/SurfaceHolder.html#SURFACE_TYPE_PUSH_BUFFERS
var SURFACE_TYPE_PUSH_BUFFERS = 0x00000003;
h.setType(SURFACE_TYPE_PUSH_BUFFERS);
h.addCallback(
new XSurfaceHolder_Callback
{
yield_surfaceCreated = delegate
{
System.Console.WriteLine("at yield_surfaceCreated ");
try
{
camera.setPreviewDisplay(h);
camera.startPreview();
System.Console.WriteLine("after startPreview ");
b.Set();
}
catch
{
throw;
}
}
}
);
//h.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
aa.addContentView(dummy, new android.widget.LinearLayout.LayoutParams(
android.widget.LinearLayout.LayoutParams.WRAP_CONTENT,
android.widget.LinearLayout.LayoutParams.WRAP_CONTENT
)
);
done = delegate
{
aa.runOnUiThread(
new f
{
y = delegate
{
// https://groups.google.com/forum/?fromgroups#!topic/android-developers/liph4z9LnFA
// how to Orphanize??
dummy.setVisibility(View.GONE);
}
}
);
};
}
catch
{
throw;
}
}
}
);
}
);
}
catch
{
throw;
}
b.WaitOne();
//camera.@lock();
var a = new EventWaitHandle(false, EventResetMode.ManualReset);
//var b = new EventWaitHandle(false, EventResetMode.ManualReset);
// E/SecCamera( 84): ERR(int android::fimc_v4l2_s_ctrl(int, unsigned int, unsigned int)):VIDIOC_S_CTRL(id = 0x800005d (93), value = 1) failed ret = -1
//E/SecCamera( 84): ERR(int android::SecCamera::setAutofocus()):Fail on V4L2_CID_CAMERA_SET_AUTO_FOCUS
//E/CameraHardwareSec( 84): ERR(int android::CameraHardwareSec::autoFocusThread()):Fail on mSecCamera->setAutofocus()
//System.Console.WriteLine("before autoFocus " + new { f });
////
//camera.autoFocus(
// new XAutoFocus
// {
// yield = delegate
// {
// System.Console.WriteLine("at autoFocus " + new { f });
// https://github.com/mozilla-b2g/android-device-crespo/blob/master/libcamera/SecCamera.cpp
// E/SecCamera( 84): ERR(int android::fimc_poll(pollfd*)):No data in 10 secs..
//I/ShotSingle( 84): CAMERA_MSG_COMPRESSED_IMAGE
//D/dalvikvm( 6608): GC_FOR_MALLOC freed 607K, 58% free 2856K/6727K, external 2013K/2108K, paused 18ms
//I/dalvikvm-heap( 6608): Grow heap (frag case) to 7.847MB for 614416-byte allocation
//D/dalvikvm( 6608): GC_FOR_MALLOC freed 46K, 54% free 3410K/7367K, external 2013K/2108K, paused 13ms
//I/System.Console( 6608): enter XCameraPictureCallback { Length = 0 }
//I/System.Console( 6608): exit XCameraPictureCallback
//for (int i = 0; i < 11; i++)
//{
// System.Console.WriteLine("warming up camera machine... " + i);
// Thread.Sleep(1000);
//}
// http://stackoverflow.com/questions/15279911/using-camera-without-preview-or-surface-in-android
// http://handycodeworks.com/?p=19
// you are required to call startPreview() first before calling takePicture()
System.Console.WriteLine("before takePicture " + new { f });
camera.setErrorCallback(
new XErrorCallback
{
yield = (err, c) =>
{
System.Console.WriteLine(new { err });
}
}
);
// preview ready?
var at_setPreviewCallback = new EventWaitHandle(false, EventResetMode.ManualReset);
System.Console.WriteLine("before setPreviewCallback ");
// is this of any use?
camera.setOneShotPreviewCallback(
new XCameraPreviewCallback
{
yield = delegate
{
at_setPreviewCallback.Set();
}
}
);
at_setPreviewCallback.WaitOne();
System.Console.WriteLine("after setPreviewCallback ");
Thread.Sleep(150);
camera.takePicture(
null, null,
new XCameraPictureCallback
{
yield = (data, c) =>
{
System.Console.WriteLine("enter XCameraPictureCallback " + new { data.Length });
if (data.Length > 0)
{
var bmp = BitmapFactory.decodeByteArray(data, 0, data.Length);
File directory = new File(path);
directory.mkdirs();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
try
{
f.createNewFile();
FileOutputStream fo = new FileOutputStream(f);
fo.write(bytes.toByteArray());
}
catch
{
throw;
}
}
System.Console.WriteLine("exit XCameraPictureCallback");
camera.release();
done();
//[javac] V:\src\CameraExperiment\ApplicationWebService___c__DisplayClass2.java:54: cannot find symbol
//[javac] symbol : method Set()
//[javac] location: class ScriptCoreLibJava.BCLImplementation.System.Threading.__AutoResetEvent
//[javac] this.a.Set();
//[javac] ^
a.Set();
}
}
);
// I/System.Console( 6264): before takePicture { f = /mnt/sdcard/Pictures/shot.jpg }
//I/System.Console( 6264): { width = 2560, height = 1920 }
//I/System.Console( 6264): { width = 2560, height = 1536 }
//I/System.Console( 6264): { width = 2048, height = 1536 }
//I/System.Console( 6264): { width = 2048, height = 1232 }
//I/System.Console( 6264): { width = 1600, height = 1200 }
//I/System.Console( 6264): { width = 1600, height = 960 }
//I/System.Console( 6264): { width = 800, height = 480 }
//I/System.Console( 6264): { width = 640, height = 480 }
//I/ShotSingle( 84): ShotSingle::takePicture start
//I/ShotSingle( 84): ShotSingle::takePicture end
//I/System.Console( 6264): after takePicture
// }
// }
//);
System.Console.WriteLine("will wait for takePicture to complete ... " + new { f });
a.WaitOne();
return f;
}
// can we send a zip file?
public static void Invoke(int index, Action<string> y, int frames = 4)
{
#region log
var st = new Stopwatch();
st.Start();
Action<string> log =
x =>
{
var z = (st.Elapsed + " " + x);
Console.WriteLine(z);
y(z);
};
#endregion
log("getting ready...");
var DIRECTORY_DCIM = global::android.os.Environment.DIRECTORY_DCIM;
var path = global::android.os.Environment.getExternalStoragePublicDirectory(DIRECTORY_DCIM).getAbsolutePath();
path += "/Camera";
//var n = DateTime.Now;
//var f = new java.io.File(path + "/shot" + n.Ticks + ".jpg");
var camera = default(android.hardware.Camera);
var surface = default(SurfaceView);
try
{
// PreviewCallbackWithBuffer { cc = 0, Length = 1048576 }
// W/CameraService( 84): CameraService::connect X (pid 2117) rejected (existing client).
log("android.hardware.Camera.open... " + new { index });
camera = android.hardware.Camera.open(index);
log("android.hardware.Camera.open... done ");
var PreviewFormat = ImageFormat.UNKNOWN;
#region setParameters
var p = camera.getParameters();
// The size of the buffer must match the values described above.
// Gets the supported preview formats. NV21 is always supported.
// http://developer.android.com/reference/android/hardware/Camera.Parameters.html#getSupportedPreviewFormats()
#region SupportedPictureFormat
foreach (int SupportedPictureFormat in p.getSupportedPictureFormats().AsEnumerable())
{
Console.WriteLine(new { SupportedPictureFormat });
}
//p.getSupportedPictureFormats().With(
// pformats =>
// {
// for (int i = 0; i < pformats.size(); i++)
// {
// var SupportedPictureFormat = (int)pformats.get(i);
// Console.WriteLine(new { SupportedPictureFormat });
// }
// }
// );
#endregion
#region SupportedPreviewFormat
foreach (int SupportedPreviewFormat in p.getSupportedPreviewFormats().AsEnumerable())
{
if (SupportedPreviewFormat == ImageFormat.NV21)
PreviewFormat = SupportedPreviewFormat;
else if (PreviewFormat == ImageFormat.UNKNOWN)
PreviewFormat = SupportedPreviewFormat;
log("" + new { SupportedPreviewFormat });
Console.WriteLine(new { SupportedPreviewFormat });
}
//p.getSupportedPreviewFormats().With(
// pformats =>
// {
// for (int i = 0; i < pformats.size(); i++)
// {
// var SupportedPreviewFormat = (int)pformats.get(i);
// if (SupportedPreviewFormat == ImageFormat.NV21)
// PreviewFormat = SupportedPreviewFormat;
// else if (PreviewFormat == ImageFormat.UNKNOWN)
// PreviewFormat = SupportedPreviewFormat;
// log("" + new { SupportedPreviewFormat });
// }
// }
//);
#endregion
//p.setPictureFormat(ImageFormat.YV12);
p.setPreviewFormat(PreviewFormat);
//D/DOMX ( 127): ERROR: failed check:(eError == OMX_ErrorNone) || (eError == OMX_ErrorNoMore) - returning error: 0x80001005 - Error returned from OMX API in ducati
//E/CameraHAL( 127): Error while configuring rotation 0x80001005
// http://questiontrack.com/galaxy-nexus-specificaly-camera-startpreview-failed-993603.html
// http://stackoverflow.com/questions/16839869/orientation-error-causing-crash
////p.setRotation(0);
#region getSupportedPreviewSizes
//var s = p.getSupportedPreviewSizes();
var min = default(android.hardware.Camera.Size);
//for (int i = 0; i < s.size(); i++)
foreach (android.hardware.Camera.Size size in p.getSupportedPreviewSizes().AsEnumerable())
{
//var size = (android.hardware.Camera.Size)s.get(i);
// I/System.Console( 6058): before takePicture { f = /mnt/sdcard/Pictures/shot.jpg }
//I/System.Console( 6058): { size = android.hardware.Camera$Size@4fde180 }
var SupportedPreviewSize = new { size.width, size.height };
log("" + new { SupportedPreviewSize });
if (min == null)
min = size;
else if (min.width > size.width)
min = size;
}
#endregion
p.setPreviewSize(min.width, min.height);
//For formats besides YV12, the size of the buffer is determined by multiplying the
// preview image width, height, and bytes per pixel. The width and height can be read
// from getPreviewSize(). Bytes per pixel can be computed from getBitsPerPixel(int) / 8,
// using the image format from getPreviewFormat().
//p.setPictureSize(min.width, min.height);
// I/System.Console( 2860): { width = 640, height = 480, bytesperpixel = 0, buffersize = 0 }
// the number of bits per pixel of the given format or -1 if the format doesn't exist or is not supported.
//var bytesperpixel = (ImageFormat.getBitsPerPixel(ImageFormat.NV21) / 8);
// http://stackoverflow.com/questions/13703596/mediacodec-and-camera-colorspaces-dont-match
// https://code.google.com/p/android/issues/detail?id=37655
var bitsperpixel = (ImageFormat.getBitsPerPixel(PreviewFormat));
var buffersize = min.width * min.height / 8 * bitsperpixel;
// 12
// http://www.fourcc.org/yuv.php
//var buffersize = 460800;
log("" + new { min.width, min.height, bitsperpixel, buffersize });
#region setFocusMode
var focusModes = p.getSupportedFocusModes();
var NextFocus = android.hardware.Camera.Parameters.FOCUS_MODE_FIXED;
for (int i = 0; i < focusModes.size(); i++)
{
var focusMode = (string)focusModes.get(i);
if (focusMode == android.hardware.Camera.Parameters.FOCUS_MODE_INFINITY)
NextFocus = android.hardware.Camera.Parameters.FOCUS_MODE_INFINITY;
System.Console.WriteLine(new { focusMode });
}
p.setFocusMode(NextFocus);
#endregion
camera.setParameters(p);
#endregion
// preview layout size: 736/1216
buffersize = 1843200;
// E/Camera-JNI( 3148): Manually set buffer was too small! Expected 460800 bytes, but got 307200!
camera.addCallbackBuffer(new sbyte[buffersize]);
camera.addCallbackBuffer(new sbyte[buffersize]);
camera.addCallbackBuffer(new sbyte[buffersize]);
camera.addCallbackBuffer(new sbyte[buffersize]);
camera.addCallbackBuffer(new sbyte[buffersize]);
var a = new EventWaitHandle(false, EventResetMode.ManualReset);
// Task.ContinueWith
// await
(ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext as Activity).StartNew(
aa =>
{
log("at runOnUiThread...");
// solve issue with callback not being called: release the camera and try again. It usually works.
//To solve issue with rotation 0x80001005: restart app / service
// http://stackoverflow.com/questions/13546788/camera-takepicture-not-working-on-my-jb-gb-froyo-phones
aa.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
#region setErrorCallback
camera.setErrorCallback(
new XErrorCallback
{
yield = (err, c) =>
{
log("" + new { err });
}
}
);
#endregion
surface = new SurfaceView(ScriptCoreLib.Android.ThreadLocalContextReference.CurrentContext);
var holder = surface.getHolder();
// http://developer.android.com/reference/android/view/SurfaceHolder.html#SURFACE_TYPE_PUSH_BUFFERS
var SURFACE_TYPE_PUSH_BUFFERS = 0x00000003;
holder.setType(SURFACE_TYPE_PUSH_BUFFERS);
log("setPreviewCallbackWithBuffer");
var cc = 0;
//E/CameraHardwareSec( 84): int android::CameraHardwareSec::previewThread(): mSkipFrame(3) > 0
//E/CameraHardwareSec( 84): int android::CameraHardwareSec::previewThread(): mSkipFrame(2) > 0
//E/CameraHardwareSec( 84): int android::CameraHardwareSec::previewThread(): mSkipFrame(1) > 0
// http://stackoverflow.com/questions/16878042/camera-not-working-in-google-nexus-tablet
#region camera.PreviewCallbackWithBuffer
camera.PreviewCallbackWithBuffer(
(rawdata, c) =>
{
if (surface == null)
{
// W/CameraHardwareSec( 84): virtual android::status_t android::CameraHardwareSec::cancelPicture() : not supported, just returning NO_ERROR
return;
}
// 10080.0ms PreviewCallbackWithBuffer enter { cc = 58, Length = 460800 }
//10119.0ms PreviewCallbackWithBuffer compressToJpeg done { cc = 58, Elapsed = 39.0ms }
//10174.0ms PreviewCallbackWithBuffer ToBase64String done { cc = 58, Elapsed = 94.0ms }
var xcc = cc;
log("PreviewCallbackWithBuffer enter " + new { xcc, rawdata.Length });
// failed to flush { Length = 14619 }
//new Thread(
// delegate()
{
if (surface == null)
{
// W/CameraHardwareSec( 84): virtual android::status_t android::CameraHardwareSec::cancelPicture() : not supported, just returning NO_ERROR
return;
}
var cst = new Stopwatch();
cst.Start();
// http://stackoverflow.com/questions/3426614/android-converting-from-nv21-preview-format-on-nexus-one-to-jpeg
// http://developer.android.com/reference/android/graphics/YuvImage.html
//Caused by: java.lang.IllegalArgumentException: only support ImageFormat.NV21 and ImageFormat.YUY2 for now
//at android.graphics.YuvImage.<init>(YuvImage.java:82)
// https://code.google.com/p/android/issues/detail?id=823
// https://code.google.com/p/android-source-browsing/source/browse/graphics/java/android/graphics/YuvImage.java?repo=platform--frameworks--base&name=android-cts-4.1_r1
var yuv = new YuvImage(
rawdata,
PreviewFormat,
min.width,
min.height,
null
);
var m = new java.io.ByteArrayOutputStream();
yuv.compressToJpeg(
new Rect(0, 0, min.width, min.height),
20,
m);
var data = (byte[])(object)m.toByteArray();
log("PreviewCallbackWithBuffer compressToJpeg done " + new { xcc, cst.Elapsed });
Console.WriteLine("compressToJpeg "
+ new { data.Length }
);
var src = "data:image/jpg;base64," +
Convert.ToBase64String(
data
);
log("PreviewCallbackWithBuffer ToBase64String done " + new { xcc, cst.Elapsed });
y(src);
//PreviewCallbackWithBuffer { cc = 0, Length = 1048576 }
if (surface == null)
{
// W/CameraHardwareSec( 84): virtual android::status_t android::CameraHardwareSec::cancelPicture() : not supported, just returning NO_ERROR
return;
}
//camera.addCallbackBuffer();
camera.addCallbackBuffer(new sbyte[buffersize]);
log("PreviewCallbackWithBuffer exit " + new { xcc, cst.Elapsed });
if (xcc == frames)
{
//dummy.setVisibility(View.GONE);
//dummy = null;
// Caused by: android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
aa.StartNew(
delegate
{
if (surface != null)
{
surface.setVisibility(View.GONE);
surface = null;
}
a.Set();
}
);
}
}
//).Start();
cc++;
}
);
#endregion
#region holder.surfaceChanged
holder.surfaceChanged(
delegate
{
log("surfaceChanged?");
}
);
#endregion
#region holder.surfaceCreated
holder.surfaceCreated(
delegate
{
log("surfaceCreated!");
// http://stackoverflow.com/questions/12098298/android-camera-app-passed-null-surface
// http://stackoverflow.com/questions/16945524/app-passed-null-surface-while-taking-a-picture-without-a-surfaceview
// app passed NULL surface
log("before setPreviewDisplay, delay");
Thread.Sleep(400);
// https://code.google.com/p/zxing/source/browse/trunk/android/src/com/google/zxing/client/android/camera/CameraManager.java
// http://stackoverflow.com/questions/16945524/app-passed-null-surface-while-taking-a-picture-without-a-surfaceview
// http://stackoverflow.com/questions/4852740/surfaceview-getholder-not-returning-surfaceholder
log("before setPreviewDisplay " + new { holder });
// inside surface changed?
//if (surface == 0)
//{
// LOGE("app passed NULL surface");
// return NO_INIT;
//}
// https://android.googlesource.com/platform/frameworks/native/+/a6938bab1f6fa76ae98ebbe44f4e534e05fa0993/libs/ui/Camera.cpp
camera.setTryPreviewDisplay(holder);
log("after setPreviewDisplay");
log("startPreview, delay");
Thread.Sleep(200);
log("startPreview");
camera.startPreview();
log("after startPreview");
}
);
#endregion
#region addContentView
//surface.setBackgroundColor(Color.argb(0x0F, 255, 0, 0));
var pp = new android.widget.LinearLayout.LayoutParams(
android.widget.LinearLayout.LayoutParams.FILL_PARENT,
android.widget.LinearLayout.LayoutParams.FILL_PARENT
);
//pp.setMargins(64, 64, 64, 64);
aa.addContentView(surface, pp);
#endregion
}
);
a.WaitOne();
log("PreviewCallbackWithBuffer done");
}
catch (Exception ex)
{
log("error: " + new { ex.Message, ex.StackTrace });
throw new Exception("", ex);
}
finally
{
log("finally");
// using
if (camera != null)
{
camera.stopPreview();
camera.release();
camera = null;
}
}
}
