NDK: AImageReader implementation (c360382b) · Commits · e / os / android_frameworks_av

camera/ndk/Android.mk

+2 −1

Original line number	Diff line number	Diff line
		@@ -35,7 +35,8 @@ LOCAL_MODULE:= libcamera2ndk

		LOCAL_C_INCLUDES := \
		system/media/camera/include \
		frameworks/av/include/camera/ndk
		frameworks/av/include/camera/ndk \
		frameworks/av/include/ndk \

		LOCAL_CFLAGS += -fvisibility=hidden -D EXPORT='__attribute__ ((visibility ("default")))'

camera/ndk/impl/ACameraMetadata.cpp

+71 −2

Original line number	Diff line number	Diff line
		@@ -19,6 +19,8 @@

		#include "ACameraMetadata.h"
		#include <utils/Vector.h>
		#include <system/graphics.h>
		#include "NdkImage.h"

		using namespace android;

		@@ -29,6 +31,7 @@ ACameraMetadata::ACameraMetadata(camera_metadata_t* buffer, ACAMERA_METADATA_TYP
		mData(buffer), mType(type) {
		if (mType == ACM_CHARACTERISTICS) {
		filterUnsupportedFeatures();
		filterStreamConfigurations();
		}
		// TODO: filter request/result keys
		}
		@@ -60,7 +63,7 @@ void
		ACameraMetadata::filterUnsupportedFeatures() {
		// Hide unsupported capabilities (reprocessing)
		camera_metadata_entry entry = mData.find(ANDROID_REQUEST_AVAILABLE_CAPABILITIES);
		if (entry.count == 0 \|\| entry.type != ACAMERA_TYPE_BYTE) {
		if (entry.count == 0 \|\| entry.type != TYPE_BYTE) {
		ALOGE("%s: malformed available capability key! count %zu, type %d",
		__FUNCTION__, entry.count, entry.type);
		return;
		@@ -75,7 +78,73 @@ ACameraMetadata::filterUnsupportedFeatures() {
		}
		}
		mData.update(ANDROID_REQUEST_AVAILABLE_CAPABILITIES, capabilities);
		// TODO: Hide unsupported streams (input/bidirectional streams)
		}


		void
		ACameraMetadata::filterStreamConfigurations() {
		const int STREAM_CONFIGURATION_SIZE = 4;
		const int STREAM_FORMAT_OFFSET = 0;
		const int STREAM_WIDTH_OFFSET = 1;
		const int STREAM_HEIGHT_OFFSET = 2;
		const int STREAM_IS_INPUT_OFFSET = 3;
		camera_metadata_entry entry = mData.find(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS);
		if (entry.count == 0 \|\| entry.count % 4 \|\| entry.type != TYPE_INT32) {
		ALOGE("%s: malformed available stream configuration key! count %zu, type %d",
		__FUNCTION__, entry.count, entry.type);
		return;
		}

		Vector<int32_t> filteredStreamConfigs;
		filteredStreamConfigs.setCapacity(entry.count);

		for (size_t i=0; i < entry.count; i += STREAM_CONFIGURATION_SIZE) {
		int32_t format = entry.data.i32[i + STREAM_FORMAT_OFFSET];
		int32_t width = entry.data.i32[i + STREAM_WIDTH_OFFSET];
		int32_t height = entry.data.i32[i + STREAM_HEIGHT_OFFSET];
		int32_t isInput = entry.data.i32[i + STREAM_IS_INPUT_OFFSET];
		if (isInput == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT) {
		// Hide input streams
		continue;
		}
		// Translate HAL formats to NDK format
		if (format == HAL_PIXEL_FORMAT_BLOB) {
		format = AIMAGE_FORMAT_JPEG;
		}
		filteredStreamConfigs.push_back(format);
		filteredStreamConfigs.push_back(width);
		filteredStreamConfigs.push_back(height);
		filteredStreamConfigs.push_back(isInput);
		}

		mData.update(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, filteredStreamConfigs);

		entry = mData.find(ANDROID_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS);
		Vector<int32_t> filteredDepthStreamConfigs;
		filteredDepthStreamConfigs.setCapacity(entry.count);

		for (size_t i=0; i < entry.count; i += STREAM_CONFIGURATION_SIZE) {
		int32_t format = entry.data.i32[i + STREAM_FORMAT_OFFSET];
		int32_t width = entry.data.i32[i + STREAM_WIDTH_OFFSET];
		int32_t height = entry.data.i32[i + STREAM_HEIGHT_OFFSET];
		int32_t isInput = entry.data.i32[i + STREAM_IS_INPUT_OFFSET];
		if (isInput == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT) {
		// Hide input streams
		continue;
		}
		// Translate HAL formats to NDK format
		if (format == HAL_PIXEL_FORMAT_BLOB) {
		format = AIMAGE_FORMAT_DEPTH_POINT_CLOUD;
		} else if (format == HAL_PIXEL_FORMAT_Y16) {
		format = AIMAGE_FORMAT_DEPTH16;
		}

		filteredDepthStreamConfigs.push_back(format);
		filteredDepthStreamConfigs.push_back(width);
		filteredDepthStreamConfigs.push_back(height);
		filteredDepthStreamConfigs.push_back(isInput);
		}
		mData.update(ANDROID_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS, filteredDepthStreamConfigs);
		}

		bool

camera/ndk/impl/ACameraMetadata.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -55,6 +55,7 @@ struct ACameraMetadata : public RefBase {
		inline bool isVendorTag(const uint32_t tag);
		bool isCaptureRequestTag(const uint32_t tag);
		void filterUnsupportedFeatures(); // Hide features not yet supported by NDK
		void filterStreamConfigurations(); // Hide input streams, translate hal format to NDK formats

		template<typename INTERNAL_T, typename NDK_T>
		camera_status_t updateImpl(uint32_t tag, uint32_t count, const NDK_T* data) {

include/ndk/NdkImage.h

0 → 100644

+99 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		/*
		* This file defines an NDK API.
		* Do not remove methods.
		* Do not change method signatures.
		* Do not change the value of constants.
		* Do not change the size of any of the classes defined in here.
		* Do not reference types that are not part of the NDK.
		* Do not #include files that aren't part of the NDK.
		*/

		#ifndef _NDK_IMAGE_H
		#define _NDK_IMAGE_H

		#include "NdkMediaError.h"

		#ifdef __cplusplus
		extern "C" {
		#endif

		typedef struct AImage AImage;

		// Formats not listed here will not be supported by AImageReader
		enum {
		AIMAGE_FORMAT_YUV_420_888 = 0x23,
		AIMAGE_FORMAT_JPEG = 0x100,
		AIMAGE_FORMAT_RAW16 = 0x20,
		AIMAGE_FORMAT_RAW_PRIVATE = 0x24,
		AIMAGE_FORMAT_RAW10 = 0x25,
		AIMAGE_FORMAT_RAW12 = 0x26,
		AIMAGE_FORMAT_DEPTH16 = 0x44363159,
		AIMAGE_FORMAT_DEPTH_POINT_CLOUD = 0x101
		};

		typedef struct AImageCropRect {
		int32_t left;
		int32_t top;
		int32_t right;
		int32_t bottom;
		} AImageCropRect;

		// Return the image back to system and delete the AImage from memory
		// Do NOT use `image` after this call
		void AImage_delete(AImage* image);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getWidth(const AImage* image, /out/int32_t* width);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getHeight(const AImage* image, /out/int32_t* height);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getFormat(const AImage* image, /out/int32_t* format);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getCropRect(const AImage* image, /out/AImageCropRect* rect);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getTimestamp(const AImage* image, /out/int64_t* timestampNs);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getNumberOfPlanes(const AImage* image, /out/int32_t* numPlanes);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getPlanePixelStride(
		const AImage* image, int planeIdx, /out/int32_t* pixelStride);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		media_status_t AImage_getPlaneRowStride(
		const AImage* image, int planeIdx, /out/int32_t* rowStride);

		// AMEDIA_ERROR_INVALID_OBJECT will be returned if the parent AImageReader is deleted
		// Note that once the AImage or the parent AImageReader is deleted, the `*data` returned from
		// previous AImage_getPlaneData call becomes dangling pointer. Do NOT use it after
		// AImage or AImageReader is deleted
		media_status_t AImage_getPlaneData(
		const AImage* image, int planeIdx,
		/out/uint8_t** data, /out/int* dataLength);

		#ifdef __cplusplus
		} // extern "C"
		#endif

		#endif //_NDK_IMAGE_H

include/ndk/NdkImageReader.h

0 → 100644

+77 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		/*
		* This file defines an NDK API.
		* Do not remove methods.
		* Do not change method signatures.
		* Do not change the value of constants.
		* Do not change the size of any of the classes defined in here.
		* Do not reference types that are not part of the NDK.
		* Do not #include files that aren't part of the NDK.
		*/

		#ifndef _NDK_IMAGE_READER_H
		#define _NDK_IMAGE_READER_H

		#include <android/native_window.h>
		#include "NdkMediaError.h"
		#include "NdkImage.h"

		#ifdef __cplusplus
		extern "C" {
		#endif

		typedef struct AImageReader AImageReader;

		media_status_t AImageReader_new(
		int32_t width, int32_t height, int32_t format, int32_t maxImages,
		/out/AImageReader** reader);

		// Return all images acquired from this AImageReader back to system and delete
		// the AImageReader instance from memory
		// Do NOT use `reader` after this call
		void AImageReader_delete(AImageReader* reader);

		// Do NOT call ANativeWindow_release on the output. Just use AImageReader_delete.
		media_status_t AImageReader_getWindow(AImageReader, /out/ANativeWindow* window);

		media_status_t AImageReader_getWidth(const AImageReader* reader, /out/int32_t* width);
		media_status_t AImageReader_getHeight(const AImageReader* reader, /out/int32_t* height);
		media_status_t AImageReader_getFormat(const AImageReader* reader, /out/int32_t* format);
		media_status_t AImageReader_getMaxImages(const AImageReader* reader, /out/int32_t* maxImages);

		media_status_t AImageReader_acquireNextImage(AImageReader* reader, /out/AImage** image);

		media_status_t AImageReader_acquireLatestImage(AImageReader* reader, /out/AImage** image);

		// The callback happens on one dedicated thread per AImageReader instance
		// It's okay to use AImageReader_/AImage_ APIs within the callback
		typedef void (AImageReader_ImageCallback)(void context, AImageReader* reader);

		typedef struct AImageReader_ImageListener {
		void* context; // optional application context.
		AImageReader_ImageCallback onImageAvailable;
		} AImageReader_ImageListener;

		media_status_t AImageReader_setImageListener(
		AImageReader* reader, AImageReader_ImageListener* listener);

		#ifdef __cplusplus
		} // extern "C"
		#endif

		#endif //_NDK_IMAGE_READER_H