camera3: Pass vendor tags through binder. (85c4388d) · Commits · e / os / android_frameworks_base

core/java/android/hardware/ICameraService.aidl

+8 −0

Original line number	Diff line number	Diff line
		@@ -61,4 +61,12 @@ interface ICameraService
		int removeListener(ICameraServiceListener listener);

		int getCameraCharacteristics(int cameraId, out CameraMetadataNative info);

		/**
		* The java stubs for this method are not intended to be used. Please use
		* the native stub in frameworks/av/include/camera/ICameraService.h instead.
		* The BinderHolder output is being used as a placeholder, and will not be
		* well-formatted in the generated java method.
		*/
		int getCameraVendorTagDescriptor(out BinderHolder desc);
		}

core/java/android/hardware/camera2/CameraManager.java

+15 −0

Original line number	Diff line number	Diff line
		@@ -48,6 +48,8 @@ import java.util.ArrayList;
		*/
		public final class CameraManager {

		private static final String TAG = "CameraManager";

		/**
		* This should match the ICameraService definition
		*/
		@@ -78,6 +80,19 @@ public final class CameraManager {
		*/
		mCameraService = CameraBinderDecorator.newInstance(cameraServiceRaw);

		try {
		int err = CameraMetadataNative.nativeSetupGlobalVendorTagDescriptor();
		if (err == CameraBinderDecorator.EOPNOTSUPP) {
		Log.w(TAG, "HAL version doesn't vendor tags.");
		} else {
		CameraBinderDecorator.throwOnError(CameraMetadataNative.
		nativeSetupGlobalVendorTagDescriptor());
		}
		} catch(CameraRuntimeException e) {
		throw new IllegalStateException("Failed to setup camera vendor tags",
		e.asChecked());
		}

		try {
		mCameraService.addListener(new CameraServiceListener());
		} catch(CameraRuntimeException e) {

core/java/android/hardware/camera2/impl/CameraMetadataNative.java

+12 −0

Original line number	Diff line number	Diff line
		@@ -104,6 +104,18 @@ public class CameraMetadataNative extends CameraMetadata implements Parcelable {
		nativeReadFromParcel(in);
		}

		/**
		* Set the global client-side vendor tag descriptor to allow use of vendor
		* tags in camera applications.
		*
		* @return int A native status_t value corresponding to one of the
		* {@link CameraBinderDecorator} integer constants.
		* @see CameraBinderDecorator#throwOnError
		*
		* @hide
		*/
		public static native int nativeSetupGlobalVendorTagDescriptor();

		/**
		* Set a camera metadata field to a value. The field definitions can be
		* found in {@link CameraCharacteristics}, {@link CaptureResult}, and

core/java/android/hardware/camera2/utils/CameraBinderDecorator.java

+49 −41

Original line number	Diff line number	Diff line
		@@ -64,8 +64,39 @@ public class CameraBinderDecorator {
		// int return type => status_t => convert to exception
		if (m.getReturnType() == Integer.TYPE) {
		int returnValue = (Integer) result;
		throwOnError(returnValue);
		}
		}

		switch (returnValue) {
		@Override
		public boolean onCatchException(Method m, Object[] args, Throwable t) {

		if (t instanceof DeadObjectException) {
		UncheckedThrow.throwAnyException(new CameraRuntimeException(
		CAMERA_DISCONNECTED,
		"Process hosting the camera service has died unexpectedly",
		t));
		} else if (t instanceof RemoteException) {
		throw new UnsupportedOperationException("An unknown RemoteException was thrown" +
		" which should never happen.", t);
		}

		return false;
		}

		@Override
		public void onFinally(Method m, Object[] args) {
		}

		}

		/**
		* Throw error codes returned by the camera service as exceptions.
		*
		* @param errorFlag error to throw as an exception.
		*/
		public static void throwOnError(int errorFlag) {
		switch (errorFlag) {
		case NO_ERROR:
		return;
		case PERMISSION_DENIED:
		@@ -101,33 +132,10 @@ public class CameraBinderDecorator {
		* error codes i.e. ALREADY_EXISTS that aren't really runtime
		* errors, then add them to the top switch statement
		*/
		if (returnValue < 0) {
		if (errorFlag < 0) {
		throw new UnsupportedOperationException(String.format("Unknown error %d",
		returnValue));
		}
		}
		errorFlag));
		}

		@Override
		public boolean onCatchException(Method m, Object[] args, Throwable t) {

		if (t instanceof DeadObjectException) {
		UncheckedThrow.throwAnyException(new CameraRuntimeException(
		CAMERA_DISCONNECTED,
		"Process hosting the camera service has died unexpectedly",
		t));
		} else if (t instanceof RemoteException) {
		throw new UnsupportedOperationException("An unknown RemoteException was thrown" +
		" which should never happen.", t);
		}

		return false;
		}

		@Override
		public void onFinally(Method m, Object[] args) {
		}

		}

		/**

core/jni/android_hardware_camera2_CameraMetadata.cpp

+34 −0

Original line number	Diff line number	Diff line
		@@ -19,13 +19,18 @@
		// #define LOG_NNDEBUG 0
		#define LOG_TAG "CameraMetadata-JNI"
		#include <utils/Log.h>
		#include <utils/RefBase.h>
		#include <string.h>

		#include "jni.h"
		#include "JNIHelp.h"
		#include "android_os_Parcel.h"
		#include "android_runtime/AndroidRuntime.h"

		#include <binder/IServiceManager.h>
		#include <camera/CameraMetadata.h>
		#include <camera/ICameraService.h>
		#include <camera/VendorTagDescriptor.h>
		#include <nativehelper/ScopedUtfChars.h>
		#include <nativehelper/ScopedPrimitiveArray.h>

		@@ -112,6 +117,7 @@ extern "C" {
		static void CameraMetadata_classInit(JNIEnv *env, jobject thiz);
		static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyName);
		static jint CameraMetadata_getTypeFromTag(JNIEnv *env, jobject thiz, jint tag);
		static jint CameraMetadata_setupGlobalVendorTagDescriptor(JNIEnv *env, jobject thiz);

		// Less safe access to native pointer. Does NOT throw any Java exceptions if NULL.
		static CameraMetadata* CameraMetadata_getPointerNoThrow(JNIEnv *env, jobject thiz) {
		@@ -372,6 +378,9 @@ static JNINativeMethod gCameraMetadataMethods[] = {
		{ "nativeGetTypeFromTag",
		"(I)I",
		(void *)CameraMetadata_getTypeFromTag },
		{ "nativeSetupGlobalVendorTagDescriptor",
		"()I",
		(void*)CameraMetadata_setupGlobalVendorTagDescriptor },
		// instance methods
		{ "nativeAllocate",
		"()J",
		@@ -556,4 +565,29 @@ static jint CameraMetadata_getTypeFromTag(JNIEnv *env, jobject thiz, jint tag) {
		return tagType;
		}

		static jint CameraMetadata_setupGlobalVendorTagDescriptor(JNIEnv *env, jobject thiz) {
		const String16 NAME("media.camera");
		sp<ICameraService> cameraService;
		status_t err = getService(NAME, /out/&cameraService);

		if (err != OK) {
		ALOGE("%s: Failed to get camera service, received error %s (%d)", __FUNCTION__,
		strerror(-err), err);
		return err;
		}

		sp<VendorTagDescriptor> desc;
		err = cameraService->getCameraVendorTagDescriptor(/out/desc);

		if (err != OK) {
		ALOGE("%s: Failed to setup vendor tag descriptors, received error %s (%d)", __FUNCTION__,
		strerror(-err), err);
		return err;
		}

		err = VendorTagDescriptor::setAsGlobalVendorTagDescriptor(desc);

		return err;
		}

		} // extern "C"