gecko/dom/camera/CameraControlImpl.cpp

636 lines
17 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "CameraControlImpl.h"
#include "base/basictypes.h"
#include "mozilla/Assertions.h"
#include "mozilla/unused.h"
#include "nsIWeakReferenceUtils.h"
#include "CameraRecorderProfiles.h"
#include "CameraCommon.h"
#include "nsGlobalWindow.h"
#include "DeviceStorageFileDescriptor.h"
#include "CameraControlListener.h"
using namespace mozilla;
nsWeakPtr CameraControlImpl::sCameraThread;
CameraControlImpl::CameraControlImpl(uint32_t aCameraId)
: mCameraId(aCameraId)
, mPreviewState(CameraControlListener::kPreviewStopped)
, mHardwareState(CameraControlListener::kHardwareClosed)
{
DOM_CAMERA_LOGT("%s:%d : this=%p\n", __func__, __LINE__, this);
// reuse the same camera thread to conserve resources
nsCOMPtr<nsIThread> ct = do_QueryReferent(sCameraThread);
if (ct) {
mCameraThread = ct.forget();
} else {
nsresult rv = NS_NewNamedThread("CameraThread", getter_AddRefs(mCameraThread));
unused << rv; // swallow rv to suppress a compiler warning when the macro
// is #defined to nothing (i.e. in non-DEBUG builds).
MOZ_ASSERT(NS_SUCCEEDED(rv));
// keep a weak reference to the new thread
sCameraThread = do_GetWeakReference(mCameraThread);
}
mListenerLock = PR_NewRWLock(PR_RWLOCK_RANK_NONE, "CameraControlImpl.Listeners.Lock");
}
CameraControlImpl::~CameraControlImpl()
{
if (mListenerLock) {
PR_DestroyRWLock(mListenerLock);
mListenerLock = nullptr;
}
}
already_AddRefed<RecorderProfileManager>
CameraControlImpl::GetRecorderProfileManager()
{
return GetRecorderProfileManagerImpl();
}
void
CameraControlImpl::Shutdown()
{
DOM_CAMERA_LOGT("%s:%d\n", __func__, __LINE__);
}
void
CameraControlImpl::OnHardwareStateChange(CameraControlListener::HardwareState aNewState)
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread. On Gonk, it may be called from the camera's
// local binder thread, should the mediaserver process die.
RwLockAutoEnterRead lock(mListenerLock);
if (aNewState == mHardwareState) {
DOM_CAMERA_LOGI("OnHardwareStateChange: state did not change from %d\n", mHardwareState);
return;
}
#ifdef PR_LOGGING
const char* state[] = { "open", "closed", "failed" };
MOZ_ASSERT(aNewState >= 0);
if (static_cast<unsigned int>(aNewState) < sizeof(state) / sizeof(state[0])) {
DOM_CAMERA_LOGI("New hardware state is '%s'\n", state[aNewState]);
} else {
DOM_CAMERA_LOGE("OnHardwareStateChange: got invalid HardwareState value %d\n", aNewState);
}
#endif
mHardwareState = aNewState;
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnHardwareStateChange(mHardwareState);
}
}
void
CameraControlImpl::OnConfigurationChange()
{
MOZ_ASSERT(NS_GetCurrentThread() == mCameraThread);
RwLockAutoEnterRead lock(mListenerLock);
DOM_CAMERA_LOGI("OnConfigurationChange : %d listeners\n", mListeners.Length());
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnConfigurationChange(mCurrentConfiguration);
}
}
void
CameraControlImpl::OnAutoFocusComplete(bool aAutoFocusSucceeded)
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread. On Gonk, it is called from the camera
// library's auto focus thread.
RwLockAutoEnterRead lock(mListenerLock);
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnAutoFocusComplete(aAutoFocusSucceeded);
}
}
void
CameraControlImpl::OnTakePictureComplete(uint8_t* aData, uint32_t aLength, const nsAString& aMimeType)
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread. On Gonk, it is called from the camera
// library's snapshot thread.
RwLockAutoEnterRead lock(mListenerLock);
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnTakePictureComplete(aData, aLength, aMimeType);
}
}
void
CameraControlImpl::OnShutter()
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread. On Gonk, it is called from the camera driver's
// preview thread.
RwLockAutoEnterRead lock(mListenerLock);
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnShutter();
}
}
void
CameraControlImpl::OnClosed()
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread.
RwLockAutoEnterRead lock(mListenerLock);
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnHardwareStateChange(CameraControlListener::kHardwareClosed);
}
}
void
CameraControlImpl::OnRecorderStateChange(CameraControlListener::RecorderState aState,
int32_t aStatus, int32_t aTrackNumber)
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread. On Gonk, it is called from the media encoder
// thread.
RwLockAutoEnterRead lock(mListenerLock);
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnRecorderStateChange(aState, aStatus, aTrackNumber);
}
}
void
CameraControlImpl::OnPreviewStateChange(CameraControlListener::PreviewState aNewState)
{
// This callback runs on the Main Thread and the Camera Thread, and
// may run on the local binder thread, should the mediaserver
// process die.
RwLockAutoEnterRead lock(mListenerLock);
if (aNewState == mPreviewState) {
DOM_CAMERA_LOGI("OnPreviewStateChange: state did not change from %d\n", mPreviewState);
return;
}
#ifdef PR_LOGGING
const char* state[] = { "stopped", "paused", "started" };
MOZ_ASSERT(aNewState >= 0);
if (static_cast<unsigned int>(aNewState) < sizeof(state) / sizeof(state[0])) {
DOM_CAMERA_LOGI("New preview state is '%s'\n", state[aNewState]);
} else {
DOM_CAMERA_LOGE("OnPreviewStateChange: got unknown PreviewState value %d\n", aNewState);
}
#endif
mPreviewState = aNewState;
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnPreviewStateChange(mPreviewState);
}
}
bool
CameraControlImpl::OnNewPreviewFrame(layers::Image* aImage, uint32_t aWidth, uint32_t aHeight)
{
// This function runs on neither the Main Thread nor the Camera Thread.
// On Gonk, it is called from the camera driver's preview thread.
RwLockAutoEnterRead lock(mListenerLock);
DOM_CAMERA_LOGI("OnNewPreviewFrame: we have %d preview frame listener(s)\n",
mListeners.Length());
bool consumed = false;
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
consumed = l->OnNewPreviewFrame(aImage, aWidth, aHeight) || consumed;
}
return consumed;
}
void
CameraControlImpl::OnError(CameraControlListener::CameraErrorContext aContext,
CameraControlListener::CameraError aError)
{
// This callback can run on threads other than the Main Thread and
// the Camera Thread.
RwLockAutoEnterRead lock(mListenerLock);
#ifdef PR_LOGGING
const char* error[] = {
"api-failed",
"init-failed",
"invalid-configuration",
"service-failed",
"set-picture-size-failed",
"set-thumbnail-size-failed",
"unknown"
};
const char* context[] = {
"StartCamera",
"StopCamera",
"AutoFocus",
"TakePicture",
"StartRecording",
"StopRecording",
"SetConfiguration",
"StartPreview",
"StopPreview",
"Unspecified"
};
if (static_cast<unsigned int>(aError) < sizeof(error) / sizeof(error[0]) &&
static_cast<unsigned int>(aContext) < sizeof(context) / sizeof(context[0])) {
DOM_CAMERA_LOGW("CameraControlImpl::OnError : aContext='%s' (%u), aError='%s' (%u)\n",
context[aContext], aContext, error[aError], aError);
} else {
DOM_CAMERA_LOGE("CameraControlImpl::OnError : aContext=%u, aError=%d\n",
aContext, aError);
}
#endif
for (uint32_t i = 0; i < mListeners.Length(); ++i) {
CameraControlListener* l = mListeners[i];
l->OnError(aContext, aError);
}
}
// Camera control asynchronous message; these are dispatched from
// the Main Thread to the Camera Thread, where they are consumed.
class CameraControlImpl::ControlMessage : public nsRunnable
{
public:
ControlMessage(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext)
: mCameraControl(aCameraControl)
, mContext(aContext)
{
MOZ_COUNT_CTOR(CameraControlImpl::ControlMessage);
}
virtual ~ControlMessage()
{
MOZ_COUNT_DTOR(CameraControlImpl::ControlMessage);
}
virtual nsresult RunImpl() = 0;
NS_IMETHOD
Run() MOZ_OVERRIDE
{
MOZ_ASSERT(mCameraControl);
MOZ_ASSERT(NS_GetCurrentThread() == mCameraControl->mCameraThread);
nsresult rv = RunImpl();
if (NS_FAILED(rv)) {
DOM_CAMERA_LOGW("Camera control API failed at %d with 0x%x\n", mContext, rv);
// XXXmikeh - do we want to report a more specific error code?
mCameraControl->OnError(mContext, CameraControlListener::kErrorApiFailed);
}
return NS_OK;
}
protected:
nsRefPtr<CameraControlImpl> mCameraControl;
CameraControlListener::CameraErrorContext mContext;
};
nsresult
CameraControlImpl::Start(const Configuration* aConfig)
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext,
const Configuration* aConfig)
: ControlMessage(aCameraControl, aContext)
, mHaveInitialConfig(false)
{
if (aConfig) {
mConfig = *aConfig;
mHaveInitialConfig = true;
}
}
nsresult
RunImpl() MOZ_OVERRIDE
{
if (mHaveInitialConfig) {
return mCameraControl->StartImpl(&mConfig);
}
return mCameraControl->StartImpl();
}
protected:
bool mHaveInitialConfig;
Configuration mConfig;
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInStartCamera, aConfig), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::SetConfiguration(const Configuration& aConfig)
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext,
const Configuration& aConfig)
: ControlMessage(aCameraControl, aContext)
, mConfig(aConfig)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->SetConfigurationImpl(mConfig);
}
protected:
Configuration mConfig;
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInSetConfiguration, aConfig), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::AutoFocus(bool aCancelExistingCall)
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext,
bool aCancelExistingCall)
: ControlMessage(aCameraControl, aContext)
, mCancelExistingCall(aCancelExistingCall)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->AutoFocusImpl(mCancelExistingCall);
}
protected:
bool mCancelExistingCall;
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInAutoFocus, aCancelExistingCall), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::TakePicture()
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext)
: ControlMessage(aCameraControl, aContext)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->TakePictureImpl();
}
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInTakePicture), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::StartRecording(DeviceStorageFileDescriptor* aFileDescriptor,
const StartRecordingOptions* aOptions)
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext,
const StartRecordingOptions* aOptions,
DeviceStorageFileDescriptor* aFileDescriptor)
: ControlMessage(aCameraControl, aContext)
, mOptionsPassed(false)
, mFileDescriptor(aFileDescriptor)
{
if (aOptions) {
mOptions = *aOptions;
mOptionsPassed = true;
}
}
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->StartRecordingImpl(mFileDescriptor,
mOptionsPassed ? &mOptions : nullptr);
}
protected:
StartRecordingOptions mOptions;
bool mOptionsPassed;
nsRefPtr<DeviceStorageFileDescriptor> mFileDescriptor;
};
return mCameraThread->Dispatch(new Message(this, CameraControlListener::kInStartRecording,
aOptions, aFileDescriptor), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::StopRecording()
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext)
: ControlMessage(aCameraControl, aContext)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->StopRecordingImpl();
}
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInStopRecording), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::StartPreview()
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext)
: ControlMessage(aCameraControl, aContext)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->StartPreviewImpl();
}
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInStartPreview), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::StopPreview()
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext)
: ControlMessage(aCameraControl, aContext)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->StopPreviewImpl();
}
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInStopPreview), NS_DISPATCH_NORMAL);
}
nsresult
CameraControlImpl::Stop()
{
class Message : public ControlMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener::CameraErrorContext aContext)
: ControlMessage(aCameraControl, aContext)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
return mCameraControl->StopImpl();
}
};
return mCameraThread->Dispatch(
new Message(this, CameraControlListener::kInStopCamera), NS_DISPATCH_NORMAL);
}
class CameraControlImpl::ListenerMessage : public CameraControlImpl::ControlMessage
{
public:
ListenerMessage(CameraControlImpl* aCameraControl,
CameraControlListener* aListener)
: ControlMessage(aCameraControl, CameraControlListener::kInUnspecified)
, mListener(aListener)
{ }
protected:
nsRefPtr<CameraControlListener> mListener;
};
void
CameraControlImpl::AddListenerImpl(already_AddRefed<CameraControlListener> aListener)
{
RwLockAutoEnterWrite lock(mListenerLock);
CameraControlListener* l = *mListeners.AppendElement() = aListener;
DOM_CAMERA_LOGI("Added camera control listener %p\n", l);
// Update the newly-added listener's state
l->OnConfigurationChange(mCurrentConfiguration);
l->OnHardwareStateChange(mHardwareState);
l->OnPreviewStateChange(mPreviewState);
}
void
CameraControlImpl::AddListener(CameraControlListener* aListener)
{
class Message : public ListenerMessage
{
public:
Message(CameraControlImpl* aCameraControl,
CameraControlListener* aListener)
: ListenerMessage(aCameraControl, aListener)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
mCameraControl->AddListenerImpl(mListener.forget());
return NS_OK;
}
};
mCameraThread->Dispatch(new Message(this, aListener), NS_DISPATCH_NORMAL);
}
void
CameraControlImpl::RemoveListenerImpl(CameraControlListener* aListener)
{
RwLockAutoEnterWrite lock(mListenerLock);
nsRefPtr<CameraControlListener> l(aListener);
mListeners.RemoveElement(l);
DOM_CAMERA_LOGI("Removed camera control listener %p\n", l.get());
// XXXmikeh - do we want to notify the listener that it has been removed?
}
void
CameraControlImpl::RemoveListener(CameraControlListener* aListener)
{
class Message : public ListenerMessage
{
public:
Message(CameraControlImpl* aCameraControl, CameraControlListener* aListener)
: ListenerMessage(aCameraControl, aListener)
{ }
nsresult
RunImpl() MOZ_OVERRIDE
{
mCameraControl->RemoveListenerImpl(mListener);
return NS_OK;
}
};
mCameraThread->Dispatch(new Message(this, aListener), NS_DISPATCH_NORMAL);
}