From 667d8ea8fd4bda35e8888792d2b6c055fdb4be18 Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Fri, 10 May 2019 17:40:02 +0200 Subject: android: hal: Add Camera3 HAL Add libcamera Android Camera HALv3 implementation. The initial camera HAL implementation supports the LIMITED hardware level and uses statically defined metadata and camera characteristics. Add a build option named 'android' and adjust the build system to selectively compile the Android camera HAL and link it against the required Android libraries. Signed-off-by: Jacopo Mondi --- meson_options.txt | 5 + src/android/camera3_hal.cpp | 111 +++++ src/android/camera_device.cpp | 831 +++++++++++++++++++++++++++++++++++++ src/android/camera_device.h | 71 ++++ src/android/camera_hal_manager.cpp | 138 ++++++ src/android/camera_hal_manager.h | 47 +++ src/android/camera_proxy.cpp | 194 +++++++++ src/android/camera_proxy.h | 45 ++ src/android/meson.build | 8 + src/android/thread_rpc.cpp | 42 ++ src/android/thread_rpc.h | 54 +++ src/libcamera/meson.build | 9 + src/meson.build | 5 +- 13 files changed, 1559 insertions(+), 1 deletion(-) create mode 100644 src/android/camera3_hal.cpp create mode 100644 src/android/camera_device.cpp create mode 100644 src/android/camera_device.h create mode 100644 src/android/camera_hal_manager.cpp create mode 100644 src/android/camera_hal_manager.h create mode 100644 src/android/camera_proxy.cpp create mode 100644 src/android/camera_proxy.h create mode 100644 src/android/thread_rpc.cpp create mode 100644 src/android/thread_rpc.h diff --git a/meson_options.txt b/meson_options.txt index 97efc85b..2d78b8d9 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -1,3 +1,8 @@ +option('android', + type : 'boolean', + value : false, + description : 'Compile libcamera with Android Camera3 HAL interface') + option('documentation', type : 'boolean', description : 'Generate the project documentation') diff --git a/src/android/camera3_hal.cpp b/src/android/camera3_hal.cpp new file mode 100644 index 00000000..8d2629ca --- /dev/null +++ b/src/android/camera3_hal.cpp @@ -0,0 +1,111 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera3_hal.cpp - Android Camera HALv3 module + */ + +#include + +#include "camera_hal_manager.h" +#include "camera_proxy.h" +#include "log.h" + +using namespace libcamera; + +LOG_DEFINE_CATEGORY(HAL) + +static CameraHalManager cameraManager; + +/*------------------------------------------------------------------------------ + * Android Camera HAL callbacks + */ + +static int hal_get_number_of_cameras(void) +{ + return cameraManager.numCameras(); +} + +static int hal_get_camera_info(int id, struct camera_info *info) +{ + return cameraManager.getCameraInfo(id, info); +} + +static int hal_set_callbacks(const camera_module_callbacks_t *callbacks) +{ + return 0; +} + +static int hal_open_legacy(const struct hw_module_t *module, const char *id, + uint32_t halVersion, struct hw_device_t **device) +{ + return -ENOSYS; +} + +static int hal_set_torch_mode(const char *camera_id, bool enabled) +{ + return -ENOSYS; +} + +/* + * First entry point of the camera HAL module. + * + * Initialize the HAL but does not open any camera device yet (see hal_dev_open) + */ +static int hal_init() +{ + LOG(HAL, Info) << "Initialising Android camera HAL"; + + cameraManager.init(); + + return 0; +} + +/*------------------------------------------------------------------------------ + * Android Camera Device + */ + +static int hal_dev_open(const hw_module_t *module, const char *name, + hw_device_t **device) +{ + LOG(HAL, Debug) << "Open camera " << name; + + int id = atoi(name); + CameraProxy *proxy = cameraManager.open(id, module); + if (!proxy) { + LOG(HAL, Error) + << "Failed to open camera module '" << id << "'"; + return -ENODEV; + } + + *device = &proxy->camera3Device()->common; + + return 0; +} + +static struct hw_module_methods_t hal_module_methods = { + .open = hal_dev_open, +}; + +camera_module_t HAL_MODULE_INFO_SYM = { + .common = { + .tag = HARDWARE_MODULE_TAG, + .module_api_version = CAMERA_MODULE_API_VERSION_2_4, + .hal_api_version = HARDWARE_HAL_API_VERSION, + .id = CAMERA_HARDWARE_MODULE_ID, + .name = "libcamera camera HALv3 module", + .author = "libcamera", + .methods = &hal_module_methods, + .dso = nullptr, + .reserved = {}, + }, + + .get_number_of_cameras = hal_get_number_of_cameras, + .get_camera_info = hal_get_camera_info, + .set_callbacks = hal_set_callbacks, + .get_vendor_tag_ops = nullptr, + .open_legacy = hal_open_legacy, + .set_torch_mode = hal_set_torch_mode, + .init = hal_init, + .reserved = {}, +}; diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp new file mode 100644 index 00000000..e2c1f2a2 --- /dev/null +++ b/src/android/camera_device.cpp @@ -0,0 +1,831 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_device.cpp - libcamera Android Camera Device + */ + +#include "camera_device.h" + +#include + +#include "log.h" + +#include "thread_rpc.h" + +using namespace libcamera; + +LOG_DECLARE_CATEGORY(HAL); + +/* + * \struct Camera3RequestDescriptor + * + * A utility structure that groups information about a capture request to be + * later re-used at request complete time to notify the framework. + */ + +CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor( + unsigned int frameNumber, unsigned int numBuffers) + : frameNumber(frameNumber), numBuffers(numBuffers) +{ + buffers = new camera3_stream_buffer_t[numBuffers]; +} + +CameraDevice::Camera3RequestDescriptor::~Camera3RequestDescriptor() +{ + delete[] buffers; +} + +/* + * \class CameraDevice + * + * The CameraDevice class wraps a libcamera::Camera instance, and implements + * the camera_device_t interface by handling RPC requests received from its + * associated CameraProxy. + * + * It translate parameters and operations from Camera HALv3 API to the libcamera + * ones to provide static information for a Camera, create request templates + * for it, process capture requests and then deliver capture results back + * to the framework using the designated callbacks. + */ + +CameraDevice::CameraDevice(unsigned int id, std::shared_ptr &camera) + : running_(false), camera_(camera), staticMetadata_(nullptr), + requestTemplate_(nullptr) +{ + camera_->requestCompleted.connect(this, &CameraDevice::requestComplete); +} + +CameraDevice::~CameraDevice() +{ + if (staticMetadata_) + free_camera_metadata(staticMetadata_); + staticMetadata_ = nullptr; + + if (requestTemplate_) + free_camera_metadata(requestTemplate_); + requestTemplate_ = nullptr; +} + +/* + * Handle RPC request received from the associated proxy. + */ +void CameraDevice::message(Message *message) +{ + if (message->type() != ThreadRpcMessage::type()) + return Object::message(message); + + ThreadRpcMessage *rpcMessage = static_cast(message); + ThreadRpc *rpc = rpcMessage->rpc; + + switch (rpc->tag) { + case ThreadRpc::ProcessCaptureRequest: + processCaptureRequest(rpc->request); + break; + case ThreadRpc::Close: + close(); + break; + default: + LOG(HAL, Error) << "Unknown RPC operation: " << rpc->tag; + } + + rpc->notifyReception(); +} + +int CameraDevice::open() +{ + int ret = camera_->acquire(); + if (ret) { + LOG(HAL, Error) << "Failed to acquire the camera"; + return ret; + } + + return 0; +} + +void CameraDevice::close() +{ + camera_->stop(); + + camera_->freeBuffers(); + camera_->release(); + + running_ = false; +} + +void CameraDevice::setCallbacks(const camera3_callback_ops_t *callbacks) +{ + callbacks_ = callbacks; +} + +/* + * Return static information for the camera. + */ +camera_metadata_t *CameraDevice::getStaticMetadata() +{ + int ret; + + if (staticMetadata_) + return staticMetadata_; + + /* + * The here reported metadata are enough to implement a basic capture + * example application, but a real camera implementation will require + * more. + */ + + /* \todo Use correct sizes */ + #define STATIC_ENTRY_CAP 256 + #define STATIC_DATA_CAP 6688 + camera_metadata_t *staticMetadata = + allocate_camera_metadata(STATIC_ENTRY_CAP, STATIC_DATA_CAP); + + /* Sensor static metadata. */ + int32_t pixelArraySize[] = { + 2592, 1944, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SENSOR_INFO_PIXEL_ARRAY_SIZE, + &pixelArraySize, 2); + METADATA_ASSERT(ret); + + int32_t sensorSizes[] = { + 0, 0, 2560, 1920, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SENSOR_INFO_ACTIVE_ARRAY_SIZE, + &sensorSizes, 4); + METADATA_ASSERT(ret); + + int32_t sensitivityRange[] = { + 32, 2400, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SENSOR_INFO_SENSITIVITY_RANGE, + &sensitivityRange, 2); + METADATA_ASSERT(ret); + + uint16_t filterArr = ANDROID_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT, + &filterArr, 1); + METADATA_ASSERT(ret); + + int64_t exposureTimeRange[] = { + 100000, 200000000, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SENSOR_INFO_EXPOSURE_TIME_RANGE, + &exposureTimeRange, 2); + METADATA_ASSERT(ret); + + int32_t orientation = 0; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SENSOR_ORIENTATION, + &orientation, 1); + METADATA_ASSERT(ret); + + /* Flash static metadata. */ + char flashAvailable = ANDROID_FLASH_INFO_AVAILABLE_FALSE; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_FLASH_INFO_AVAILABLE, + &flashAvailable, 1); + METADATA_ASSERT(ret); + + /* Lens static metadata. */ + float fn = 2.53 / 100; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_LENS_INFO_AVAILABLE_APERTURES, &fn, 1); + METADATA_ASSERT(ret); + + /* Control metadata. */ + char controlMetadata = ANDROID_CONTROL_MODE_AUTO; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_CONTROL_AVAILABLE_MODES, + &controlMetadata, 1); + METADATA_ASSERT(ret); + + char availableAntiBandingModes[] = { + ANDROID_CONTROL_AE_ANTIBANDING_MODE_OFF, + ANDROID_CONTROL_AE_ANTIBANDING_MODE_50HZ, + ANDROID_CONTROL_AE_ANTIBANDING_MODE_60HZ, + ANDROID_CONTROL_AE_ANTIBANDING_MODE_AUTO, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES, + availableAntiBandingModes, 4); + METADATA_ASSERT(ret); + + char aeAvailableModes[] = { + ANDROID_CONTROL_AE_MODE_ON, + ANDROID_CONTROL_AE_MODE_OFF, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_CONTROL_AE_AVAILABLE_MODES, + aeAvailableModes, 2); + METADATA_ASSERT(ret); + + controlMetadata = ANDROID_CONTROL_AE_LOCK_AVAILABLE_TRUE; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_CONTROL_AE_LOCK_AVAILABLE, + &controlMetadata, 1); + METADATA_ASSERT(ret); + + uint8_t awbLockAvailable = ANDROID_CONTROL_AWB_LOCK_AVAILABLE_FALSE; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_CONTROL_AWB_LOCK_AVAILABLE, + &awbLockAvailable, 1); + + /* Scaler static metadata. */ + std::vector availableStreamFormats = { + ANDROID_SCALER_AVAILABLE_FORMATS_BLOB, + ANDROID_SCALER_AVAILABLE_FORMATS_YCbCr_420_888, + ANDROID_SCALER_AVAILABLE_FORMATS_IMPLEMENTATION_DEFINED, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SCALER_AVAILABLE_FORMATS, + availableStreamFormats.data(), + availableStreamFormats.size()); + METADATA_ASSERT(ret); + + std::vector availableStreamConfigurations = { + ANDROID_SCALER_AVAILABLE_FORMATS_BLOB, 2560, 1920, + ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT, + ANDROID_SCALER_AVAILABLE_FORMATS_YCbCr_420_888, 2560, 1920, + ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT, + ANDROID_SCALER_AVAILABLE_FORMATS_IMPLEMENTATION_DEFINED, 2560, 1920, + ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS, + availableStreamConfigurations.data(), + availableStreamConfigurations.size()); + METADATA_ASSERT(ret); + + std::vector availableStallDurations = { + ANDROID_SCALER_AVAILABLE_FORMATS_BLOB, 2560, 1920, 33333333, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SCALER_AVAILABLE_STALL_DURATIONS, + availableStallDurations.data(), + availableStallDurations.size()); + METADATA_ASSERT(ret); + + std::vector minFrameDurations = { + ANDROID_SCALER_AVAILABLE_FORMATS_BLOB, 2560, 1920, 33333333, + ANDROID_SCALER_AVAILABLE_FORMATS_IMPLEMENTATION_DEFINED, 2560, 1920, 33333333, + ANDROID_SCALER_AVAILABLE_FORMATS_YCbCr_420_888, 2560, 1920, 33333333, + }; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, + minFrameDurations.data(), minFrameDurations.size()); + METADATA_ASSERT(ret); + + /* Info static metadata. */ + uint8_t supportedHWLevel = ANDROID_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED; + ret = add_camera_metadata_entry(staticMetadata, + ANDROID_INFO_SUPPORTED_HARDWARE_LEVEL, + &supportedHWLevel, 1); + + return staticMetadata; +} + +/* + * Produce a metadata pack to be used as template for a capture request. + */ +const camera_metadata_t *CameraDevice::constructDefaultRequestSettings(int type) +{ + int ret; + + /* + * \todo Inspect type and pick the right metadata pack. + * As of now just use a single one for all templates. + */ + uint8_t captureIntent; + switch (type) { + case CAMERA3_TEMPLATE_PREVIEW: + captureIntent = ANDROID_CONTROL_CAPTURE_INTENT_PREVIEW; + break; + case CAMERA3_TEMPLATE_STILL_CAPTURE: + captureIntent = ANDROID_CONTROL_CAPTURE_INTENT_STILL_CAPTURE; + break; + case CAMERA3_TEMPLATE_VIDEO_RECORD: + captureIntent = ANDROID_CONTROL_CAPTURE_INTENT_VIDEO_RECORD; + break; + case CAMERA3_TEMPLATE_VIDEO_SNAPSHOT: + captureIntent = ANDROID_CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT; + break; + case CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG: + captureIntent = ANDROID_CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG; + break; + case CAMERA3_TEMPLATE_MANUAL: + captureIntent = ANDROID_CONTROL_CAPTURE_INTENT_MANUAL; + break; + default: + LOG(HAL, Error) << "Invalid template request type: " << type; + return nullptr; + } + + if (requestTemplate_) + return requestTemplate_; + + /* \todo Use correct sizes */ + #define REQUEST_TEMPLATE_ENTRIES 30 + #define REQUEST_TEMPLATE_DATA 2048 + requestTemplate_ = allocate_camera_metadata(REQUEST_TEMPLATE_ENTRIES, + REQUEST_TEMPLATE_DATA); + if (!requestTemplate_) { + LOG(HAL, Error) << "Failed to allocate template metadata"; + return nullptr; + } + + /* Set to 0 the number of 'processed and stalling' streams (ie JPEG). */ + int32_t maxOutStream[] = { 0, 2, 0 }; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_MAX_NUM_OUTPUT_STREAMS, + maxOutStream, 3); + METADATA_ASSERT(ret); + + uint8_t maxPipelineDepth = 5; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_PIPELINE_MAX_DEPTH, + &maxPipelineDepth, 1); + METADATA_ASSERT(ret); + + int32_t inputStreams = 0; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_MAX_NUM_INPUT_STREAMS, + &inputStreams, 1); + METADATA_ASSERT(ret); + + int32_t partialResultCount = 1; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_PARTIAL_RESULT_COUNT, + &partialResultCount, 1); + METADATA_ASSERT(ret); + + uint8_t availableCapabilities[] = { + ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE, + }; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_AVAILABLE_CAPABILITIES, + availableCapabilities, 1); + METADATA_ASSERT(ret); + + uint8_t aeMode = ANDROID_CONTROL_AE_MODE_ON; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AE_MODE, + &aeMode, 1); + METADATA_ASSERT(ret); + + int32_t aeExposureCompensation = 0; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AE_EXPOSURE_COMPENSATION, + &aeExposureCompensation, 1); + METADATA_ASSERT(ret); + + uint8_t aePrecaptureTrigger = ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER_IDLE; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER, + &aePrecaptureTrigger, 1); + METADATA_ASSERT(ret); + + uint8_t aeLock = ANDROID_CONTROL_AE_LOCK_OFF; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AE_LOCK, + &aeLock, 1); + METADATA_ASSERT(ret); + + uint8_t afTrigger = ANDROID_CONTROL_AF_TRIGGER_IDLE; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AF_TRIGGER, + &afTrigger, 1); + METADATA_ASSERT(ret); + + uint8_t awbMode = ANDROID_CONTROL_AWB_MODE_AUTO; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AWB_MODE, + &awbMode, 1); + METADATA_ASSERT(ret); + + uint8_t awbLock = ANDROID_CONTROL_AWB_LOCK_OFF; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AWB_LOCK, + &awbLock, 1); + METADATA_ASSERT(ret); + + uint8_t awbLockAvailable = ANDROID_CONTROL_AWB_LOCK_AVAILABLE_FALSE; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_AWB_LOCK_AVAILABLE, + &awbLockAvailable, 1); + METADATA_ASSERT(ret); + + uint8_t flashMode = ANDROID_FLASH_MODE_OFF; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_FLASH_MODE, + &flashMode, 1); + METADATA_ASSERT(ret); + + uint8_t faceDetectMode = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_STATISTICS_FACE_DETECT_MODE, + &faceDetectMode, 1); + METADATA_ASSERT(ret); + + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_CONTROL_CAPTURE_INTENT, + &captureIntent, 1); + METADATA_ASSERT(ret); + + /* + * This is quite hard to list at the moment wihtout knowing what + * we could control. + * + * For now, just list in the available Request keys and in the available + * result keys the control and reporting of the AE algorithm. + */ + std::vector availableRequestKeys = { + ANDROID_CONTROL_AE_MODE, + ANDROID_CONTROL_AE_EXPOSURE_COMPENSATION, + ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER, + ANDROID_CONTROL_AE_LOCK, + ANDROID_CONTROL_AF_TRIGGER, + ANDROID_CONTROL_AWB_MODE, + ANDROID_CONTROL_AWB_LOCK, + ANDROID_CONTROL_AWB_LOCK_AVAILABLE, + ANDROID_CONTROL_CAPTURE_INTENT, + ANDROID_FLASH_MODE, + ANDROID_STATISTICS_FACE_DETECT_MODE, + }; + + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_AVAILABLE_REQUEST_KEYS, + availableRequestKeys.data(), + availableRequestKeys.size()); + METADATA_ASSERT(ret); + + std::vector availableResultKeys = { + ANDROID_CONTROL_AE_MODE, + ANDROID_CONTROL_AE_EXPOSURE_COMPENSATION, + ANDROID_CONTROL_AE_PRECAPTURE_TRIGGER, + ANDROID_CONTROL_AE_LOCK, + ANDROID_CONTROL_AF_TRIGGER, + ANDROID_CONTROL_AWB_MODE, + ANDROID_CONTROL_AWB_LOCK, + ANDROID_CONTROL_AWB_LOCK_AVAILABLE, + ANDROID_CONTROL_CAPTURE_INTENT, + ANDROID_FLASH_MODE, + ANDROID_STATISTICS_FACE_DETECT_MODE, + }; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_AVAILABLE_RESULT_KEYS, + availableResultKeys.data(), + availableResultKeys.size()); + METADATA_ASSERT(ret); + + /* + * \todo The available characteristics are be the tags reported + * as part of the static metadata reported at hal_get_camera_info() + * time. As of now, report an empty list. + */ + std::vector availableCharacteristicsKeys = {}; + ret = add_camera_metadata_entry(requestTemplate_, + ANDROID_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS, + availableCharacteristicsKeys.data(), + availableCharacteristicsKeys.size()); + METADATA_ASSERT(ret); + + return requestTemplate_; +} + +/* + * Inspect the stream_list to produce a list of StreamConfiguration to + * be use to configure the Camera. + */ +int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list) +{ + for (unsigned int i = 0; i < stream_list->num_streams; ++i) { + camera3_stream_t *stream = stream_list->streams[i]; + + LOG(HAL, Info) << "Stream #" << i + << ", direction: " << stream->stream_type + << ", width: " << stream->width + << ", height: " << stream->height + << ", format: " << std::hex << stream->format; + } + + /* Hardcode viewfinder role, collecting sizes from the stream config. */ + if (stream_list->num_streams != 1) { + LOG(HAL, Error) << "Only one stream supported"; + return -EINVAL; + } + + StreamRoles roles = { StreamRole::Viewfinder }; + config_ = camera_->generateConfiguration(roles); + if (!config_ || config_->empty()) { + LOG(HAL, Error) << "Failed to generate camera configuration"; + return -EINVAL; + } + + /* Only one stream is supported. */ + camera3_stream_t *camera3Stream = stream_list->streams[0]; + StreamConfiguration *streamConfiguration = &config_->at(0); + streamConfiguration->size.width = camera3Stream->width; + streamConfiguration->size.height = camera3Stream->height; + streamConfiguration->memoryType = ExternalMemory; + + /* + * \todo We'll need to translate from Android defined pixel format codes + * to the libcamera image format codes. For now, do not change the + * format returned from Camera::generateConfiguration(). + */ + + switch (config_->validate()) { + case CameraConfiguration::Valid: + break; + case CameraConfiguration::Adjusted: + LOG(HAL, Info) << "Camera configuration adjusted"; + config_.reset(); + return -EINVAL; + case CameraConfiguration::Invalid: + LOG(HAL, Info) << "Camera configuration invalid"; + config_.reset(); + return -EINVAL; + } + + camera3Stream->max_buffers = streamConfiguration->bufferCount; + + /* + * Once the CameraConfiguration has been adjusted/validated + * it can be applied to the camera. + */ + int ret = camera_->configure(config_.get()); + if (ret) { + LOG(HAL, Error) << "Failed to configure camera '" + << camera_->name() << "'"; + return ret; + } + + return 0; +} + +int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Request) +{ + StreamConfiguration *streamConfiguration = &config_->at(0); + Stream *stream = streamConfiguration->stream(); + + if (camera3Request->num_output_buffers != 1) { + LOG(HAL, Error) << "Invalid number of output buffers: " + << camera3Request->num_output_buffers; + return -EINVAL; + } + + /* Start the camera if that's the first request we handle. */ + if (!running_) { + int ret = camera_->allocateBuffers(); + if (ret) { + LOG(HAL, Error) << "Failed to allocate buffers"; + return ret; + } + + ret = camera_->start(); + if (ret) { + LOG(HAL, Error) << "Failed to start camera"; + camera_->freeBuffers(); + return ret; + } + + running_ = true; + } + + /* + * Queue a request for the Camera with the provided dmabuf file + * descriptors. + */ + const camera3_stream_buffer_t *camera3Buffers = + camera3Request->output_buffers; + + /* + * Save the request descriptors for use at completion time. + * The descriptor and the associated memory reserved here are freed + * at request complete time. + */ + Camera3RequestDescriptor *descriptor = + new Camera3RequestDescriptor(camera3Request->frame_number, + camera3Request->num_output_buffers); + for (unsigned int i = 0; i < descriptor->numBuffers; ++i) { + /* + * Keep track of which stream the request belongs to and store + * the native buffer handles. + * + * \todo Currently we only support one capture buffer. Copy + * all of them to be ready once we'll support more. + */ + descriptor->buffers[i].stream = camera3Buffers[i].stream; + descriptor->buffers[i].buffer = camera3Buffers[i].buffer; + } + + /* + * Create a libcamera buffer using the dmabuf descriptors of the first + * and (currently) only supported request buffer. + */ + const buffer_handle_t camera3Handle = *camera3Buffers[0].buffer; + std::array fds = { + camera3Handle->data[0], + camera3Handle->data[1], + camera3Handle->data[2], + }; + + std::unique_ptr buffer = stream->createBuffer(fds); + if (!buffer) { + LOG(HAL, Error) << "Failed to create buffer"; + delete descriptor; + return -EINVAL; + } + + Request *request = + camera_->createRequest(reinterpret_cast(descriptor)); + request->addBuffer(std::move(buffer)); + + int ret = camera_->queueRequest(request); + if (ret) { + LOG(HAL, Error) << "Failed to queue request"; + goto error; + } + + return 0; + +error: + delete request; + delete descriptor; + + return ret; +} + +void CameraDevice::requestComplete(Request *request, + const std::map &buffers) +{ + Buffer *libcameraBuffer = buffers.begin()->second; + camera3_buffer_status status = CAMERA3_BUFFER_STATUS_OK; + camera_metadata_t *resultMetadata = nullptr; + + if (request->status() != Request::RequestComplete) { + LOG(HAL, Error) << "Request not succesfully completed: " + << request->status(); + status = CAMERA3_BUFFER_STATUS_ERROR; + } + + /* Prepare to call back the Android camera stack. */ + Camera3RequestDescriptor *descriptor = + reinterpret_cast(request->cookie()); + + camera3_capture_result_t captureResult = {}; + captureResult.frame_number = descriptor->frameNumber; + captureResult.num_output_buffers = descriptor->numBuffers; + for (unsigned int i = 0; i < descriptor->numBuffers; ++i) { + /* + * \todo Currently we only support one capture buffer. Prepare + * all of them to be ready once we'll support more. + */ + descriptor->buffers[i].acquire_fence = -1; + descriptor->buffers[i].release_fence = -1; + descriptor->buffers[i].status = status; + } + captureResult.output_buffers = + const_cast(descriptor->buffers); + + if (status == CAMERA3_BUFFER_STATUS_ERROR) { + /* \todo Improve error handling. */ + notifyError(descriptor->frameNumber, + descriptor->buffers[0].stream); + } else { + notifyShutter(descriptor->frameNumber, + libcameraBuffer->timestamp()); + + captureResult.partial_result = 1; + resultMetadata = getResultMetadata(descriptor->frameNumber, + libcameraBuffer->timestamp()); + captureResult.result = resultMetadata; + } + + callbacks_->process_capture_result(callbacks_, &captureResult); + + delete descriptor; + if (resultMetadata) + free_camera_metadata(resultMetadata); + + return; +} + +void CameraDevice::notifyShutter(uint32_t frameNumber, uint64_t timestamp) +{ + camera3_notify_msg_t notify = {}; + + notify.type = CAMERA3_MSG_SHUTTER; + notify.message.shutter.frame_number = frameNumber; + notify.message.shutter.timestamp = timestamp; + + callbacks_->notify(callbacks_, ¬ify); +} + +void CameraDevice::notifyError(uint32_t frameNumber, camera3_stream_t *stream) +{ + camera3_notify_msg_t notify = {}; + + notify.type = CAMERA3_MSG_ERROR; + notify.message.error.error_stream = stream; + notify.message.error.frame_number = frameNumber; + notify.message.error.error_code = CAMERA3_MSG_ERROR_REQUEST; + + callbacks_->notify(callbacks_, ¬ify); +} + +/* + * Produce a set of fixed result metadata. + */ +camera_metadata_t *CameraDevice::getResultMetadata(int frame_number, + int64_t timestamp) +{ + int ret; + + /* \todo Use correct sizes */ + #define RESULT_ENTRY_CAP 256 + #define RESULT_DATA_CAP 6688 + camera_metadata_t *resultMetadata = + allocate_camera_metadata(STATIC_ENTRY_CAP, STATIC_DATA_CAP); + + const uint8_t ae_state = ANDROID_CONTROL_AE_STATE_CONVERGED; + ret = add_camera_metadata_entry(resultMetadata, ANDROID_CONTROL_AE_STATE, + &ae_state, 1); + METADATA_ASSERT(ret); + + const uint8_t ae_lock = ANDROID_CONTROL_AE_LOCK_OFF; + ret = add_camera_metadata_entry(resultMetadata, ANDROID_CONTROL_AE_LOCK, + &ae_lock, 1); + METADATA_ASSERT(ret); + + uint8_t af_state = ANDROID_CONTROL_AF_STATE_INACTIVE; + ret = add_camera_metadata_entry(resultMetadata, ANDROID_CONTROL_AF_STATE, + &af_state, 1); + METADATA_ASSERT(ret); + + const uint8_t awb_state = ANDROID_CONTROL_AWB_STATE_CONVERGED; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_CONTROL_AWB_STATE, + &awb_state, 1); + METADATA_ASSERT(ret); + + const uint8_t awb_lock = ANDROID_CONTROL_AWB_LOCK_OFF; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_CONTROL_AWB_LOCK, + &awb_lock, 1); + METADATA_ASSERT(ret); + + const uint8_t lens_state = ANDROID_LENS_STATE_STATIONARY; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_LENS_STATE, + &lens_state, 1); + METADATA_ASSERT(ret); + + int32_t sensorSizes[] = { + 0, 0, 2560, 1920, + }; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_SCALER_CROP_REGION, + sensorSizes, 4); + METADATA_ASSERT(ret); + + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_SENSOR_TIMESTAMP, + ×tamp, 1); + METADATA_ASSERT(ret); + + /* 33.3 msec */ + const int64_t rolling_shutter_skew = 33300000; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_SENSOR_ROLLING_SHUTTER_SKEW, + &rolling_shutter_skew, 1); + METADATA_ASSERT(ret); + + /* 16.6 msec */ + const int64_t exposure_time = 16600000; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_SENSOR_EXPOSURE_TIME, + &exposure_time, 1); + METADATA_ASSERT(ret); + + const uint8_t lens_shading_map_mode = + ANDROID_STATISTICS_LENS_SHADING_MAP_MODE_OFF; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_STATISTICS_LENS_SHADING_MAP_MODE, + &lens_shading_map_mode, 1); + METADATA_ASSERT(ret); + + const uint8_t scene_flicker = ANDROID_STATISTICS_SCENE_FLICKER_NONE; + ret = add_camera_metadata_entry(resultMetadata, + ANDROID_STATISTICS_SCENE_FLICKER, + &scene_flicker, 1); + METADATA_ASSERT(ret); + + return resultMetadata; +} diff --git a/src/android/camera_device.h b/src/android/camera_device.h new file mode 100644 index 00000000..ac5b95c9 --- /dev/null +++ b/src/android/camera_device.h @@ -0,0 +1,71 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_device.h - libcamera Android Camera Device + */ +#ifndef __ANDROID_CAMERA_DEVICE_H__ +#define __ANDROID_CAMERA_DEVICE_H__ + +#include + +#include + +#include +#include +#include +#include +#include + +#include "message.h" + +#define METADATA_ASSERT(_r) \ + do { \ + if (!(_r)) break; \ + LOG(HAL, Error) << "Error: " << __func__ << ":" << __LINE__; \ + return nullptr; \ + } while(0); + +class CameraDevice : public libcamera::Object +{ +public: + CameraDevice(unsigned int id, std::shared_ptr &camera); + ~CameraDevice(); + + void message(libcamera::Message *message); + + int open(); + void close(); + void setCallbacks(const camera3_callback_ops_t *callbacks); + camera_metadata_t *getStaticMetadata(); + const camera_metadata_t *constructDefaultRequestSettings(int type); + int configureStreams(camera3_stream_configuration_t *stream_list); + int processCaptureRequest(camera3_capture_request_t *request); + void requestComplete(libcamera::Request *request, + const std::map &buffers); + +private: + struct Camera3RequestDescriptor { + Camera3RequestDescriptor(unsigned int frameNumber, + unsigned int numBuffers); + ~Camera3RequestDescriptor(); + + uint32_t frameNumber; + uint32_t numBuffers; + camera3_stream_buffer_t *buffers; + }; + + void notifyShutter(uint32_t frameNumber, uint64_t timestamp); + void notifyError(uint32_t frameNumber, camera3_stream_t *stream); + camera_metadata_t *getResultMetadata(int frame_number, int64_t timestamp); + + bool running_; + std::shared_ptr camera_; + std::unique_ptr config_; + + camera_metadata_t *staticMetadata_; + camera_metadata_t *requestTemplate_; + const camera3_callback_ops_t *callbacks_; +}; + +#endif /* __ANDROID_CAMERA_DEVICE_H__ */ diff --git a/src/android/camera_hal_manager.cpp b/src/android/camera_hal_manager.cpp new file mode 100644 index 00000000..08c759df --- /dev/null +++ b/src/android/camera_hal_manager.cpp @@ -0,0 +1,138 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_hal_manager.cpp - libcamera Android Camera Manager + */ + +#include "camera_hal_manager.h" + +#include + +#include "log.h" + +#include "camera_device.h" +#include "camera_proxy.h" + +using namespace libcamera; + +LOG_DECLARE_CATEGORY(HAL); + +/* + * \class CameraHalManager + * + * The HAL camera manager is initializated at camera_module_t 'hal_init()' time + * and spawns its own thread where libcamera related events are dispatched to. + * It wraps the libcamera CameraManager operations and provides helpers for the + * camera_module_t operations, to retrieve the number of cameras in the system, + * their static information and to open and close camera devices. + */ + +int CameraHalManager::init() +{ + /* + * Start the camera HAL manager thread and wait until its + * initialisation completes to be fully operational before + * receiving calls from the camera stack. + */ + start(); + + MutexLocker locker(mutex_); + cv_.wait(locker); + + return 0; +} + +void CameraHalManager::run() +{ + /* + * All the libcamera components must be initialised here, in + * order to bind them to the camera HAL manager thread that + * executes the event dispatcher. + */ + cameraManager_ = libcamera::CameraManager::instance(); + + int ret = cameraManager_->start(); + if (ret) { + LOG(HAL, Error) << "Failed to start camera manager: " + << strerror(-ret); + return; + } + + /* + * For each Camera registered in the system, a CameraProxy + * gets created here to wraps a camera device. + * + * \todo Support camera hotplug. + */ + unsigned int index = 0; + for (auto &camera : cameraManager_->cameras()) { + CameraProxy *proxy = new CameraProxy(index, camera); + proxies_.emplace_back(proxy); + + ++index; + } + + /* + * libcamera has been initialized. Unlock the init() caller + * as we're now ready to handle calls from the framework. + */ + cv_.notify_one(); + + /* Now start processing events and messages. */ + exec(); +} + +CameraProxy *CameraHalManager::open(unsigned int id, + const hw_module_t *hardwareModule) +{ + if (id < 0 || id >= numCameras()) { + LOG(HAL, Error) << "Invalid camera id '" << id << "'"; + return nullptr; + } + + CameraProxy *proxy = proxies_[id].get(); + if (proxy->open(hardwareModule)) + return nullptr; + + LOG(HAL, Info) << "Open camera '" << id << "'"; + + return proxy; +} + +int CameraHalManager::close(CameraProxy *proxy) +{ + proxy->close(); + LOG(HAL, Info) << "Close camera '" << proxy->id() << "'"; + + return 0; +} + +unsigned int CameraHalManager::numCameras() const +{ + return cameraManager_->cameras().size(); +} + +int CameraHalManager::getCameraInfo(int id, struct camera_info *info) +{ + if (!info) + return -EINVAL; + + if (id >= numCameras() || id < 0) { + LOG(HAL, Error) << "Invalid camera id '" << id << "'"; + return -EINVAL; + } + + CameraProxy *proxy = proxies_[id].get(); + + /* \todo Get these info dynamically inspecting the camera module. */ + info->facing = id ? CAMERA_FACING_FRONT : CAMERA_FACING_BACK; + info->orientation = 0; + info->device_version = 0; + info->resource_cost = 0; + info->static_camera_characteristics = proxy->getStaticMetadata(); + info->conflicting_devices = nullptr; + info->conflicting_devices_length = 0; + + return 0; +} diff --git a/src/android/camera_hal_manager.h b/src/android/camera_hal_manager.h new file mode 100644 index 00000000..8004aaf6 --- /dev/null +++ b/src/android/camera_hal_manager.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_hal_manager.h - libcamera Android Camera Manager + */ +#ifndef __ANDROID_CAMERA_MANAGER_H__ +#define __ANDROID_CAMERA_MANAGER_H__ + +#include +#include +#include + +#include +#include + +#include + +#include "thread.h" + +class CameraDevice; +class CameraProxy; + +class CameraHalManager : public libcamera::Thread +{ +public: + int init(); + + CameraProxy *open(unsigned int id, const hw_module_t *module); + int close(CameraProxy *proxy); + + unsigned int numCameras() const; + int getCameraInfo(int id, struct camera_info *info); + +private: + void run() override; + camera_metadata_t *getStaticMetadata(unsigned int id); + + libcamera::CameraManager *cameraManager_; + + std::mutex mutex_; + std::condition_variable cv_; + + std::vector> proxies_; +}; + +#endif /* __ANDROID_CAMERA_MANAGER_H__ */ diff --git a/src/android/camera_proxy.cpp b/src/android/camera_proxy.cpp new file mode 100644 index 00000000..f0cacac8 --- /dev/null +++ b/src/android/camera_proxy.cpp @@ -0,0 +1,194 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_proxy.cpp - Proxy to camera devices + */ + +#include "camera_proxy.h" + +#include + +#include "log.h" +#include "message.h" +#include "utils.h" + +#include "camera_device.h" +#include "thread_rpc.h" + +using namespace libcamera; + +LOG_DECLARE_CATEGORY(HAL); + +/* + * \class CameraProxy + * + * The CameraProxy wraps a CameraDevice and implements the camera3_device_t + * API, bridging calls received from the camera framework to the CameraDevice. + * + * Bridging operation calls between the framework and the CameraDevice is + * required as the two run in two different threads and certain operations, + * such as queueing a new capture request to the camera, shall be called in + * the thread that dispatches events. Other operations do not require any + * bridging and resolve to direct function calls on the CameraDevice instance + * instead. + */ + +static int hal_dev_initialize(const struct camera3_device *dev, + const camera3_callback_ops_t *callback_ops) +{ + if (!dev) + return -EINVAL; + + CameraProxy *proxy = reinterpret_cast(dev->priv); + proxy->initialize(callback_ops); + + return 0; +} + +static int hal_dev_configure_streams(const struct camera3_device *dev, + camera3_stream_configuration_t *stream_list) +{ + if (!dev) + return -EINVAL; + + CameraProxy *proxy = reinterpret_cast(dev->priv); + return proxy->configureStreams(stream_list); +} + +static const camera_metadata_t * +hal_dev_construct_default_request_settings(const struct camera3_device *dev, + int type) +{ + if (!dev) + return nullptr; + + CameraProxy *proxy = reinterpret_cast(dev->priv); + return proxy->constructDefaultRequestSettings(type); +} + +static int hal_dev_process_capture_request(const struct camera3_device *dev, + camera3_capture_request_t *request) +{ + if (!dev) + return -EINVAL; + + CameraProxy *proxy = reinterpret_cast(dev->priv); + return proxy->processCaptureRequest(request); +} + +static void hal_dev_dump(const struct camera3_device *dev, int fd) +{ +} + +static int hal_dev_flush(const struct camera3_device *dev) +{ + return 0; +} + +static int hal_dev_close(hw_device_t *hw_device) +{ + if (!hw_device) + return -EINVAL; + + camera3_device_t *dev = reinterpret_cast(hw_device); + CameraProxy *proxy = reinterpret_cast(dev->priv); + + proxy->close(); + + return 0; +} + +static camera3_device_ops hal_dev_ops = { + .initialize = hal_dev_initialize, + .configure_streams = hal_dev_configure_streams, + .register_stream_buffers = nullptr, + .construct_default_request_settings = hal_dev_construct_default_request_settings, + .process_capture_request = hal_dev_process_capture_request, + .get_metadata_vendor_tag_ops = nullptr, + .dump = hal_dev_dump, + .flush = hal_dev_flush, + .reserved = { nullptr }, +}; + +CameraProxy::CameraProxy(unsigned int id, std::shared_ptr camera) + : id_(id) +{ + cameraDevice_ = new CameraDevice(id, camera); +} + +CameraProxy::~CameraProxy() +{ + delete cameraDevice_; +} + +int CameraProxy::open(const hw_module_t *hardwareModule) +{ + int ret = cameraDevice_->open(); + if (ret) + return ret; + + /* Initialize the hw_device_t in the instance camera3_module_t. */ + camera3Device_.common.tag = HARDWARE_DEVICE_TAG; + camera3Device_.common.version = CAMERA_DEVICE_API_VERSION_3_3; + camera3Device_.common.module = (hw_module_t *)hardwareModule; + camera3Device_.common.close = hal_dev_close; + + /* + * The camera device operations. These actually implement + * the Android Camera HALv3 interface. + */ + camera3Device_.ops = &hal_dev_ops; + camera3Device_.priv = this; + + return 0; +} + +void CameraProxy::close() +{ + ThreadRpc rpcRequest; + rpcRequest.tag = ThreadRpc::Close; + + threadRpcCall(rpcRequest); +} + +void CameraProxy::initialize(const camera3_callback_ops_t *callbacks) +{ + cameraDevice_->setCallbacks(callbacks); +} + +const camera_metadata_t *CameraProxy::getStaticMetadata() +{ + return cameraDevice_->getStaticMetadata(); +} + +const camera_metadata_t *CameraProxy::constructDefaultRequestSettings(int type) +{ + return cameraDevice_->constructDefaultRequestSettings(type); +} + +int CameraProxy::configureStreams(camera3_stream_configuration_t *stream_list) +{ + return cameraDevice_->configureStreams(stream_list); +} + +int CameraProxy::processCaptureRequest(camera3_capture_request_t *request) +{ + ThreadRpc rpcRequest; + rpcRequest.tag = ThreadRpc::ProcessCaptureRequest; + rpcRequest.request = request; + + threadRpcCall(rpcRequest); + + return 0; +} + +void CameraProxy::threadRpcCall(ThreadRpc &rpcRequest) +{ + std::unique_ptr message = + utils::make_unique(); + message->rpc = &rpcRequest; + + cameraDevice_->postMessage(std::move(message)); + rpcRequest.waitDelivery(); +} diff --git a/src/android/camera_proxy.h b/src/android/camera_proxy.h new file mode 100644 index 00000000..da63bfa7 --- /dev/null +++ b/src/android/camera_proxy.h @@ -0,0 +1,45 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * camera_proxy.h - Proxy to camera devices + */ +#ifndef __ANDROID_CAMERA_PROXY_H__ +#define __ANDROID_CAMERA_PROXY_H__ + +#include + +#include + +#include + +class CameraDevice; +class ThreadRpc; + +class CameraProxy +{ +public: + CameraProxy(unsigned int id, std::shared_ptr camera); + ~CameraProxy(); + + int open(const hw_module_t *hardwareModule); + void close(); + + void initialize(const camera3_callback_ops_t *callbacks); + const camera_metadata_t *getStaticMetadata(); + const camera_metadata_t *constructDefaultRequestSettings(int type); + int configureStreams(camera3_stream_configuration_t *stream_list); + int processCaptureRequest(camera3_capture_request_t *request); + + unsigned int id() const { return id_; } + camera3_device_t *camera3Device() { return &camera3Device_; } + +private: + void threadRpcCall(ThreadRpc &rpcRequest); + + unsigned int id_; + CameraDevice *cameraDevice_; + camera3_device_t camera3Device_; +}; + +#endif /* __ANDROID_CAMERA_PROXY_H__ */ diff --git a/src/android/meson.build b/src/android/meson.build index 1f242953..26537794 100644 --- a/src/android/meson.build +++ b/src/android/meson.build @@ -1,3 +1,11 @@ +android_hal_sources = files([ + 'camera3_hal.cpp', + 'camera_hal_manager.cpp', + 'camera_device.cpp', + 'camera_proxy.cpp', + 'thread_rpc.cpp' +]) + android_camera_metadata_sources = files([ 'metadata/camera_metadata.c', ]) diff --git a/src/android/thread_rpc.cpp b/src/android/thread_rpc.cpp new file mode 100644 index 00000000..295a05d7 --- /dev/null +++ b/src/android/thread_rpc.cpp @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * thread_rpc.cpp - Inter-thread procedure call + */ + +#include "thread_rpc.h" + +#include "message.h" + +using namespace libcamera; + +libcamera::Message::Type ThreadRpcMessage::rpcType_ = Message::Type::None; + +ThreadRpcMessage::ThreadRpcMessage() + : Message(type()) +{ +} + +void ThreadRpc::notifyReception() +{ + { + libcamera::MutexLocker locker(mutex_); + delivered_ = true; + } + cv_.notify_one(); +} + +void ThreadRpc::waitDelivery() +{ + libcamera::MutexLocker locker(mutex_); + cv_.wait(locker, [&] { return delivered_; }); +} + +Message::Type ThreadRpcMessage::type() +{ + if (ThreadRpcMessage::rpcType_ == Message::Type::None) + rpcType_ = Message::registerMessageType(); + + return rpcType_; +} diff --git a/src/android/thread_rpc.h b/src/android/thread_rpc.h new file mode 100644 index 00000000..6d899283 --- /dev/null +++ b/src/android/thread_rpc.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2019, Google Inc. + * + * thread_rpc.h - Inter-thread procedure call + */ +#ifndef __ANDROID_THREAD_RPC_H__ +#define __ANDROID_THREAD_RPC_H__ + +#include +#include + +#include + +#include "message.h" +#include "thread.h" + +class ThreadRpc +{ +public: + enum RpcTag { + ProcessCaptureRequest, + Close, + }; + + ThreadRpc() + : delivered_(false) {} + + void notifyReception(); + void waitDelivery(); + + RpcTag tag; + + camera3_capture_request_t *request; + +private: + bool delivered_; + std::mutex mutex_; + std::condition_variable cv_; +}; + +class ThreadRpcMessage : public libcamera::Message +{ +public: + ThreadRpcMessage(); + ThreadRpc *rpc; + + static Message::Type type(); + +private: + static libcamera::Message::Type rpcType_; +}; + +#endif /* __ANDROID_THREAD_RPC_H__ */ diff --git a/src/libcamera/meson.build b/src/libcamera/meson.build index a09b23d6..7d5d3c04 100644 --- a/src/libcamera/meson.build +++ b/src/libcamera/meson.build @@ -103,9 +103,18 @@ libcamera_deps = [ dependency('threads'), ] +libcamera_link_with = [] + +if get_option('android') + libcamera_sources += android_hal_sources + includes += android_includes + libcamera_link_with += android_camera_metadata +endif + libcamera = shared_library('camera', libcamera_sources, install : true, + link_with : libcamera_link_with, include_directories : includes, dependencies : libcamera_deps) diff --git a/src/meson.build b/src/meson.build index 7148baee..67ad20aa 100644 --- a/src/meson.build +++ b/src/meson.build @@ -1,4 +1,7 @@ -subdir('android') +if get_option('android') + subdir('android') +endif + subdir('libcamera') subdir('ipa') subdir('cam') -- cgit v1.2.1