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Commit d56db1d2 authored by Eino-Ville Talvala's avatar Eino-Ville Talvala
Browse files

Camera: Switch camera2 to auto-gen C++ binder interfaces 

 - Move camera service AIDL files to frameworks/av
 - Build C++ interface stubs with AIDL tools
 - Add necessary native-side parcelables and update existing ones
 - Remove manually-written stubs, rearrange remaining manual stubs
 - Adjust implementations to work with auto-generated stubs
   - Adjust method signatures for auto-gen differences
   - Add rich error messages using binder::Status

Bug: 25091611
Change-Id: I6f69f34b9d1a3f8d1fb7db87357363f8fa8483ff
parent cf7913e2

camera/Android.mk

+24 −5
Original line number Diff line number Diff line
@@ -18,7 +18,24 @@ include $(CLEAR_VARS) 


LOCAL_PATH := $(CAMERA_CLIENT_LOCAL_PATH)



LOCAL_AIDL_INCLUDES := \

    frameworks/av/camera/aidl \

    frameworks/base/core/java \

    frameworks/native/aidl/gui



# AIDL files for camera interfaces

# The headers for these interfaces will be available to any modules that

# include libcamera_client, at the path "aidl/package/path/BnFoo.h"



LOCAL_SRC_FILES := \

    aidl/android/hardware/ICameraService.aidl \

    aidl/android/hardware/ICameraServiceListener.aidl \

    aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl \

    aidl/android/hardware/camera2/ICameraDeviceUser.aidl



# Source for camera interface parcelables, and manually-written interfaces



LOCAL_SRC_FILES += \

	Camera.cpp \

	CameraMetadata.cpp \

	CameraParameters.cpp \
@@ -26,15 +43,12 @@ LOCAL_SRC_FILES:= \ 
	CameraParameters2.cpp \

	ICamera.cpp \

	ICameraClient.cpp \

	ICameraService.cpp \

	ICameraServiceListener.cpp \

	ICameraServiceProxy.cpp \

	ICameraRecordingProxy.cpp \

	ICameraRecordingProxyListener.cpp \

	camera2/ICameraDeviceUser.cpp \

	camera2/ICameraDeviceCallbacks.cpp \

	camera2/CaptureRequest.cpp \

	camera2/OutputConfiguration.cpp \

	camera2/SubmitInfo.cpp \

	CameraBase.cpp \

	CameraUtils.cpp \

	VendorTagDescriptor.cpp
@@ -53,6 +67,11 @@ LOCAL_C_INCLUDES += \ 
	system/media/camera/include \

	system/media/private/camera/include \

	frameworks/native/include/media/openmax \

	frameworks/av/include/camera



LOCAL_EXPORT_C_INCLUDE_DIRS := \

	system/media/camera/include \

	frameworks/av/include/camera



LOCAL_MODULE:= libcamera_client

camera/Camera.cpp

+37 −35
Original line number Diff line number Diff line
@@ -24,10 +24,10 @@ 
#include <binder/IServiceManager.h>

#include <binder/IMemory.h>



#include <camera/Camera.h>

#include <camera/ICameraRecordingProxyListener.h>

#include <camera/ICameraService.h>

#include <camera/ICamera.h>

#include <Camera.h>

#include <ICameraRecordingProxyListener.h>

#include <android/hardware/ICameraService.h>

#include <android/hardware/ICamera.h>



#include <gui/IGraphicBufferProducer.h>

#include <gui/Surface.h>
@@ -40,10 +40,10 @@ Camera::Camera(int cameraId) 
}



CameraTraits<Camera>::TCamConnectService CameraTraits<Camera>::fnConnectService =

        &ICameraService::connect;

        &::android::hardware::ICameraService::connect;



// construct a camera client from an existing camera remote

sp<Camera> Camera::create(const sp<ICamera>& camera)

sp<Camera> Camera::create(const sp<::android::hardware::ICamera>& camera)

{

     ALOGV("create");

     if (camera == 0) {
@@ -84,21 +84,23 @@ status_t Camera::connectLegacy(int cameraId, int halVersion, 
{

    ALOGV("%s: connect legacy camera device", __FUNCTION__);

    sp<Camera> c = new Camera(cameraId);

    sp<ICameraClient> cl = c;

    sp<::android::hardware::ICameraClient> cl = c;

    status_t status = NO_ERROR;

    const sp<ICameraService>& cs = CameraBaseT::getCameraService();

    const sp<::android::hardware::ICameraService>& cs = CameraBaseT::getCameraService();



    if (cs != 0) {

        status = cs.get()->connectLegacy(cl, cameraId, halVersion, clientPackageName,

                                        clientUid, /*out*/c->mCamera);

    binder::Status ret;

    if (cs != nullptr) {

        ret = cs.get()->connectLegacy(cl, cameraId, halVersion, clientPackageName,

                clientUid, /*out*/&(c->mCamera));

    }

    if (status == OK && c->mCamera != 0) {

    if (ret.isOk() && c->mCamera != nullptr) {

        IInterface::asBinder(c->mCamera)->linkToDeath(c);

        c->mStatus = NO_ERROR;

        camera = c;

    } else {

        ALOGW("An error occurred while connecting to camera %d: %d (%s)",

                cameraId, status, strerror(-status));

        ALOGW("An error occurred while connecting to camera %d: %s", cameraId,

                (cs != nullptr) ? "Service not available" : ret.toString8().string());

        status = -EINVAL;

        c.clear();

    }

    return status;
@@ -107,21 +109,21 @@ status_t Camera::connectLegacy(int cameraId, int halVersion, 
status_t Camera::reconnect()

{

    ALOGV("reconnect");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->connect(this);

}



status_t Camera::lock()

{

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->lock();

}



status_t Camera::unlock()

{

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->unlock();

}
@@ -130,7 +132,7 @@ status_t Camera::unlock() 
status_t Camera::setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProducer)

{

    ALOGV("setPreviewTarget(%p)", bufferProducer.get());

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    ALOGD_IF(bufferProducer == 0, "app passed NULL surface");

    return c->setPreviewTarget(bufferProducer);
@@ -139,7 +141,7 @@ status_t Camera::setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProduc 
status_t Camera::setVideoTarget(const sp<IGraphicBufferProducer>& bufferProducer)

{

    ALOGV("setVideoTarget(%p)", bufferProducer.get());

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    ALOGD_IF(bufferProducer == 0, "app passed NULL video surface");

    return c->setVideoTarget(bufferProducer);
@@ -149,7 +151,7 @@ status_t Camera::setVideoTarget(const sp<IGraphicBufferProducer>& bufferProducer 
status_t Camera::startPreview()

{

    ALOGV("startPreview");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->startPreview();

}
@@ -157,7 +159,7 @@ status_t Camera::startPreview() 
status_t Camera::setVideoBufferMode(int32_t videoBufferMode)

{

    ALOGV("setVideoBufferMode: %d", videoBufferMode);

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->setVideoBufferMode(videoBufferMode);

}
@@ -166,7 +168,7 @@ status_t Camera::setVideoBufferMode(int32_t videoBufferMode) 
status_t Camera::startRecording()

{

    ALOGV("startRecording");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->startRecording();

}
@@ -175,7 +177,7 @@ status_t Camera::startRecording() 
void Camera::stopPreview()

{

    ALOGV("stopPreview");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return;

    c->stopPreview();

}
@@ -188,7 +190,7 @@ void Camera::stopRecording() 
        Mutex::Autolock _l(mLock);

        mRecordingProxyListener.clear();

    }

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return;

    c->stopRecording();

}
@@ -197,7 +199,7 @@ void Camera::stopRecording() 
void Camera::releaseRecordingFrame(const sp<IMemory>& mem)

{

    ALOGV("releaseRecordingFrame");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return;

    c->releaseRecordingFrame(mem);

}
@@ -206,7 +208,7 @@ void Camera::releaseRecordingFrame(const sp<IMemory>& mem) 
bool Camera::previewEnabled()

{

    ALOGV("previewEnabled");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return false;

    return c->previewEnabled();

}
@@ -215,7 +217,7 @@ bool Camera::previewEnabled() 
bool Camera::recordingEnabled()

{

    ALOGV("recordingEnabled");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return false;

    return c->recordingEnabled();

}
@@ -223,7 +225,7 @@ bool Camera::recordingEnabled() 
status_t Camera::autoFocus()

{

    ALOGV("autoFocus");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->autoFocus();

}
@@ -231,7 +233,7 @@ status_t Camera::autoFocus() 
status_t Camera::cancelAutoFocus()

{

    ALOGV("cancelAutoFocus");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->cancelAutoFocus();

}
@@ -240,7 +242,7 @@ status_t Camera::cancelAutoFocus() 
status_t Camera::takePicture(int msgType)

{

    ALOGV("takePicture: 0x%x", msgType);

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->takePicture(msgType);

}
@@ -249,7 +251,7 @@ status_t Camera::takePicture(int msgType) 
status_t Camera::setParameters(const String8& params)

{

    ALOGV("setParameters");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->setParameters(params);

}
@@ -259,7 +261,7 @@ String8 Camera::getParameters() const 
{

    ALOGV("getParameters");

    String8 params;

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c != 0) params = mCamera->getParameters();

    return params;

}
@@ -268,7 +270,7 @@ String8 Camera::getParameters() const 
status_t Camera::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2)

{

    ALOGV("sendCommand");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->sendCommand(cmd, arg1, arg2);

}
@@ -288,7 +290,7 @@ void Camera::setRecordingProxyListener(const sp<ICameraRecordingProxyListener>& 
void Camera::setPreviewCallbackFlags(int flag)

{

    ALOGV("setPreviewCallbackFlags");

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return;

    mCamera->setPreviewCallbackFlag(flag);

}
@@ -296,7 +298,7 @@ void Camera::setPreviewCallbackFlags(int flag) 
status_t Camera::setPreviewCallbackTarget(

        const sp<IGraphicBufferProducer>& callbackProducer)

{

    sp <ICamera> c = mCamera;

    sp <::android::hardware::ICamera> c = mCamera;

    if (c == 0) return NO_INIT;

    return c->setPreviewCallbackTarget(callbackProducer);

}

camera/CameraBase.cpp

+56 −21
Original line number Diff line number Diff line
@@ -21,12 +21,13 @@ 
#include <utils/threads.h>

#include <utils/Mutex.h>



#include <android/hardware/ICameraService.h>



#include <binder/IPCThreadState.h>

#include <binder/IServiceManager.h>

#include <binder/IMemory.h>



#include <camera/CameraBase.h>

#include <camera/ICameraService.h>



// needed to instantiate

#include <camera/Camera.h>
@@ -35,8 +36,28 @@ 


namespace android {



namespace hardware {



status_t CameraInfo::writeToParcel(Parcel* parcel) const {

    status_t res;

    res = parcel->writeInt32(facing);

    if (res != OK) return res;

    res = parcel->writeInt32(orientation);

    return res;

}



status_t CameraInfo::readFromParcel(const Parcel* parcel) {

    status_t res;

    res = parcel->readInt32(&facing);

    if (res != OK) return res;

    res = parcel->readInt32(&orientation);

    return res;

}



}



namespace {

    sp<ICameraService>        gCameraService;

    sp<::android::hardware::ICameraService> gCameraService;

    const int                 kCameraServicePollDelay = 500000; // 0.5s

    const char*               kCameraServiceName      = "media.camera";
@@ -65,7 +86,7 @@ namespace { 


// establish binder interface to camera service

template <typename TCam, typename TCamTraits>

const sp<ICameraService>& CameraBase<TCam, TCamTraits>::getCameraService()

const sp<::android::hardware::ICameraService>& CameraBase<TCam, TCamTraits>::getCameraService()

{

    Mutex::Autolock _l(gLock);

    if (gCameraService.get() == 0) {
@@ -83,7 +104,7 @@ const sp<ICameraService>& CameraBase<TCam, TCamTraits>::getCameraService() 
            gDeathNotifier = new DeathNotifier();

        }

        binder->linkToDeath(gDeathNotifier);

        gCameraService = interface_cast<ICameraService>(binder);

        gCameraService = interface_cast<::android::hardware::ICameraService>(binder);

    }

    ALOGE_IF(gCameraService == 0, "no CameraService!?");

    return gCameraService;
@@ -98,18 +119,20 @@ sp<TCam> CameraBase<TCam, TCamTraits>::connect(int cameraId, 
    sp<TCam> c = new TCam(cameraId);

    sp<TCamCallbacks> cl = c;

    status_t status = NO_ERROR;

    const sp<ICameraService>& cs = getCameraService();

    const sp<::android::hardware::ICameraService>& cs = getCameraService();



    if (cs != 0) {

    binder::Status ret;

    if (cs != nullptr) {

        TCamConnectService fnConnectService = TCamTraits::fnConnectService;

        status = (cs.get()->*fnConnectService)(cl, cameraId, clientPackageName, clientUid,

                                               clientPid, /*out*/ c->mCamera);

        ret = (cs.get()->*fnConnectService)(cl, cameraId, clientPackageName, clientUid,

                                               clientPid, /*out*/ &c->mCamera);

    }

    if (status == OK && c->mCamera != 0) {

    if (ret.isOk() && c->mCamera != nullptr) {

        IInterface::asBinder(c->mCamera)->linkToDeath(c);

        c->mStatus = NO_ERROR;

    } else {

        ALOGW("An error occurred while connecting to camera: %d", cameraId);

        ALOGW("An error occurred while connecting to camera %d: %s", cameraId,

                (cs != nullptr) ? "Service not available" : ret.toString8().string());

        c.clear();

    }

    return c;
@@ -182,38 +205,50 @@ void CameraBase<TCam, TCamTraits>::notifyCallback(int32_t msgType, 


template <typename TCam, typename TCamTraits>

int CameraBase<TCam, TCamTraits>::getNumberOfCameras() {

    const sp<ICameraService> cs = getCameraService();

    const sp<::android::hardware::ICameraService> cs = getCameraService();



    if (!cs.get()) {

        // as required by the public Java APIs

        return 0;

    }

    return cs->getNumberOfCameras();

    int32_t count;

    binder::Status res = cs->getNumberOfCameras(

            ::android::hardware::ICameraService::CAMERA_TYPE_BACKWARD_COMPATIBLE,

            &count);

    if (!res.isOk()) {

        ALOGE("Error reading number of cameras: %s",

                res.toString8().string());

        count = 0;

    }

    return count;

}



// this can be in BaseCamera but it should be an instance method

template <typename TCam, typename TCamTraits>

status_t CameraBase<TCam, TCamTraits>::getCameraInfo(int cameraId,

                               struct CameraInfo* cameraInfo) {

    const sp<ICameraService>& cs = getCameraService();

        struct hardware::CameraInfo* cameraInfo) {

    const sp<::android::hardware::ICameraService>& cs = getCameraService();

    if (cs == 0) return UNKNOWN_ERROR;

    return cs->getCameraInfo(cameraId, cameraInfo);

    binder::Status res = cs->getCameraInfo(cameraId, cameraInfo);

    return res.isOk() ? OK : res.serviceSpecificErrorCode();

}



template <typename TCam, typename TCamTraits>

status_t CameraBase<TCam, TCamTraits>::addServiceListener(

                            const sp<ICameraServiceListener>& listener) {

    const sp<ICameraService>& cs = getCameraService();

        const sp<::android::hardware::ICameraServiceListener>& listener) {

    const sp<::android::hardware::ICameraService>& cs = getCameraService();

    if (cs == 0) return UNKNOWN_ERROR;

    return cs->addListener(listener);

    binder::Status res = cs->addListener(listener);

    return res.isOk() ? OK : res.serviceSpecificErrorCode();

}



template <typename TCam, typename TCamTraits>

status_t CameraBase<TCam, TCamTraits>::removeServiceListener(

                            const sp<ICameraServiceListener>& listener) {

    const sp<ICameraService>& cs = getCameraService();

        const sp<::android::hardware::ICameraServiceListener>& listener) {

    const sp<::android::hardware::ICameraService>& cs = getCameraService();

    if (cs == 0) return UNKNOWN_ERROR;

    return cs->removeListener(listener);

    binder::Status res = cs->removeListener(listener);

    return res.isOk() ? OK : res.serviceSpecificErrorCode();

}



template class CameraBase<Camera>;

camera/CameraMetadata.cpp

+1 −1
Original line number Diff line number Diff line
@@ -621,7 +621,7 @@ status_t CameraMetadata::writeToParcel(Parcel& data, 
    return res;

}



status_t CameraMetadata::readFromParcel(Parcel *parcel) {

status_t CameraMetadata::readFromParcel(const Parcel *parcel) {



    ALOGV("%s: parcel = %p", __FUNCTION__, parcel);

camera/CaptureResult.cpp

+1 −1
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ bool CaptureResultExtras::isValid() { 
    return requestId >= 0;

}



status_t CaptureResultExtras::readFromParcel(Parcel *parcel) {

status_t CaptureResultExtras::readFromParcel(const Parcel *parcel) {

    if (parcel == NULL) {

        ALOGE("%s: Null parcel", __FUNCTION__);

        return BAD_VALUE;