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426 lines
11 KiB
C++
426 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CameraPreferences.h"
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#include "CameraCommon.h"
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#include "DOMCameraManager.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Monitor.h"
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#include "mozilla/StaticPtr.h"
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#include "mozilla/Preferences.h"
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#ifdef MOZ_WIDGET_GONK
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#include "mozilla/Services.h"
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#include "nsIObserverService.h"
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#endif
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using namespace mozilla;
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/* statics */
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static StaticAutoPtr<Monitor> sPrefMonitor;
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StaticAutoPtr<nsCString> CameraPreferences::sPrefTestEnabled;
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StaticAutoPtr<nsCString> CameraPreferences::sPrefHardwareTest;
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StaticAutoPtr<nsCString> CameraPreferences::sPrefGonkParameters;
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nsresult CameraPreferences::sPrefCameraControlMethodErrorOverride = NS_OK;
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nsresult CameraPreferences::sPrefCameraControlAsyncErrorOverride = NS_OK;
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uint32_t CameraPreferences::sPrefCameraControlLowMemoryThresholdMB = 0;
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bool CameraPreferences::sPrefCameraParametersIsLowMemory = false;
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bool CameraPreferences::sPrefCameraParametersPermission = false;
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#ifdef MOZ_WIDGET_GONK
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StaticRefPtr<CameraPreferences> CameraPreferences::sObserver;
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NS_IMPL_ISUPPORTS(CameraPreferences, nsIObserver);
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#endif
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/* static */
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nsresult
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CameraPreferences::UpdatePref(const char* aPref, nsresult& aVal)
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{
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uint32_t val;
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nsresult rv = Preferences::GetUint(aPref, &val);
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if (NS_SUCCEEDED(rv)) {
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aVal = static_cast<nsresult>(val);
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} else if(rv == NS_ERROR_UNEXPECTED) {
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// Preference does not exist
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rv = NS_OK;
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aVal = NS_OK;
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}
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return rv;
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}
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/* static */
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nsresult
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CameraPreferences::UpdatePref(const char* aPref, uint32_t& aVal)
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{
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uint32_t val;
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nsresult rv = Preferences::GetUint(aPref, &val);
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if (NS_SUCCEEDED(rv)) {
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aVal = val;
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} else if(rv == NS_ERROR_UNEXPECTED) {
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// Preference does not exist
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rv = NS_OK;
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aVal = 0;
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}
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return rv;
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}
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/* static */
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nsresult
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CameraPreferences::UpdatePref(const char* aPref, nsACString& aVal)
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{
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nsCString val;
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nsresult rv = Preferences::GetCString(aPref, &val);
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if (NS_SUCCEEDED(rv)) {
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aVal = val;
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} else if(rv == NS_ERROR_UNEXPECTED) {
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// Preference does not exist
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rv = NS_OK;
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aVal.Truncate();
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}
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return rv;
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}
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/* static */
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nsresult
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CameraPreferences::UpdatePref(const char* aPref, bool& aVal)
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{
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bool val;
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nsresult rv = Preferences::GetBool(aPref, &val);
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if (NS_SUCCEEDED(rv)) {
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aVal = val;
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} else if(rv == NS_ERROR_UNEXPECTED) {
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// Preference does not exist
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rv = NS_OK;
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aVal = false;
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}
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return rv;
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}
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/* static */
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CameraPreferences::Pref CameraPreferences::sPrefs[] = {
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{
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"camera.control.test.enabled",
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kPrefValueIsCString,
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{ &sPrefTestEnabled }
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},
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{
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"camera.control.test.hardware",
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kPrefValueIsCString,
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{ &sPrefHardwareTest }
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},
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{
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"camera.control.test.permission",
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kPrefValueIsBoolean,
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{ &sPrefCameraParametersPermission }
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},
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#ifdef MOZ_B2G
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{
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"camera.control.test.hardware.gonk.parameters",
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kPrefValueIsCString,
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{ &sPrefGonkParameters }
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},
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#endif
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{
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"camera.control.test.method.error",
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kPrefValueIsNsResult,
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{ &sPrefCameraControlMethodErrorOverride }
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},
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{
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"camera.control.test.async.error",
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kPrefValueIsNsResult,
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{ &sPrefCameraControlAsyncErrorOverride }
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},
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{
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"camera.control.test.is_low_memory",
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kPrefValueIsBoolean,
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{ &sPrefCameraParametersIsLowMemory }
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},
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{
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"camera.control.low_memory_thresholdMB",
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kPrefValueIsUint32,
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{ &sPrefCameraControlLowMemoryThresholdMB }
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},
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};
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/* static */
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uint32_t
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CameraPreferences::PrefToIndex(const char* aPref)
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{
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for (uint32_t i = 0; i < ArrayLength(sPrefs); ++i) {
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if (strcmp(aPref, sPrefs[i].mPref) == 0) {
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return i;
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}
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}
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return kPrefNotFound;
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}
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/* static */
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void
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CameraPreferences::PreferenceChanged(const char* aPref, void* aClosure)
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{
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MonitorAutoLock mon(*sPrefMonitor);
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uint32_t i = PrefToIndex(aPref);
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if (i == kPrefNotFound) {
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DOM_CAMERA_LOGE("Preference '%s' is not tracked by CameraPreferences\n", aPref);
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return;
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}
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Pref& p = sPrefs[i];
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nsresult rv;
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switch (p.mValueType) {
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case kPrefValueIsNsResult:
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{
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nsresult& v = *p.mValue.mAsNsResult;
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rv = UpdatePref(aPref, v);
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if (NS_SUCCEEDED(rv)) {
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DOM_CAMERA_LOGI("Preference '%s' has changed, 0x%x\n", aPref, v);
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}
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}
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break;
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case kPrefValueIsUint32:
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{
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uint32_t& v = *p.mValue.mAsUint32;
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rv = UpdatePref(aPref, v);
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if (NS_SUCCEEDED(rv)) {
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DOM_CAMERA_LOGI("Preference '%s' has changed, %u\n", aPref, v);
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}
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}
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break;
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case kPrefValueIsCString:
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{
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nsCString& v = **p.mValue.mAsCString;
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rv = UpdatePref(aPref, v);
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if (NS_SUCCEEDED(rv)) {
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DOM_CAMERA_LOGI("Preference '%s' has changed, '%s'\n", aPref, v.get());
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}
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}
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break;
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case kPrefValueIsBoolean:
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{
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bool& v = *p.mValue.mAsBoolean;
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rv = UpdatePref(aPref, v);
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if (NS_SUCCEEDED(rv)) {
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DOM_CAMERA_LOGI("Preference '%s' has changed, %s\n",
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aPref, v ? "true" : "false");
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}
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}
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Unhandled preference value type!");
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return;
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}
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if (NS_FAILED(rv)) {
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DOM_CAMERA_LOGE("Failed to get pref '%s' (0x%x)\n", aPref, rv);
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}
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}
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/* static */
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bool
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CameraPreferences::Initialize()
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{
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DOM_CAMERA_LOGI("Initializing camera preference callbacks\n");
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nsresult rv;
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#ifdef MOZ_WIDGET_GONK
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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if (obs) {
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sObserver = new CameraPreferences();
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rv = obs->AddObserver(sObserver, "init-camera-hw", false);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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sObserver = nullptr;
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}
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} else {
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DOM_CAMERA_LOGE("Could not get observer service\n");
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}
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#endif
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sPrefMonitor = new Monitor("CameraPreferences.sPrefMonitor");
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sPrefTestEnabled = new nsCString();
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sPrefHardwareTest = new nsCString();
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sPrefGonkParameters = new nsCString();
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for (uint32_t i = 0; i < ArrayLength(sPrefs); ++i) {
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rv = Preferences::RegisterCallbackAndCall(CameraPreferences::PreferenceChanged,
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sPrefs[i].mPref);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return false;
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}
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}
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DOM_CAMERA_LOGI("Camera preferences initialized\n");
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return true;
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}
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/* static */
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void
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CameraPreferences::Shutdown()
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{
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DOM_CAMERA_LOGI("Shutting down camera preference callbacks\n");
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for (uint32_t i = 0; i < ArrayLength(sPrefs); ++i) {
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Preferences::UnregisterCallback(CameraPreferences::PreferenceChanged,
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sPrefs[i].mPref);
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}
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sPrefTestEnabled = nullptr;
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sPrefHardwareTest = nullptr;
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sPrefGonkParameters = nullptr;
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sPrefMonitor = nullptr;
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#ifdef MOZ_WIDGET_GONK
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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if (obs) {
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nsresult rv = obs->RemoveObserver(sObserver , "init-camera-hw");
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if (NS_FAILED(rv)) {
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DOM_CAMERA_LOGE("Failed to remove CameraPreferences observer (0x%x)\n", rv);
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}
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sObserver = nullptr;
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} else {
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DOM_CAMERA_LOGE("Could not get observer service\n");
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}
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#endif
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DOM_CAMERA_LOGI("Camera preferences shut down\n");
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}
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#ifdef MOZ_WIDGET_GONK
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nsresult
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CameraPreferences::PreinitCameraHardware()
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{
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nsDOMCameraManager::PreinitCameraHardware();
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return NS_OK;
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}
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NS_IMETHODIMP
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CameraPreferences::Observe(nsISupports* aSubject, const char* aTopic, const char16_t* aData)
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{
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if (strcmp(aTopic, "init-camera-hw") == 0) {
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return PreinitCameraHardware();
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}
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DOM_CAMERA_LOGE("Got unhandled topic '%s'\n", aTopic);
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return NS_OK;
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}
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#endif
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/* static */
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bool
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CameraPreferences::GetPref(const char* aPref, nsACString& aVal)
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{
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MOZ_ASSERT(sPrefMonitor, "sPrefMonitor missing in CameraPreferences::GetPref()");
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MonitorAutoLock mon(*sPrefMonitor);
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uint32_t i = PrefToIndex(aPref);
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if (i == kPrefNotFound || i >= ArrayLength(sPrefs)) {
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DOM_CAMERA_LOGW("Preference '%s' is not tracked by CameraPreferences\n", aPref);
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return false;
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}
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if (sPrefs[i].mValueType != kPrefValueIsCString) {
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DOM_CAMERA_LOGW("Preference '%s' is not a string type\n", aPref);
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return false;
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}
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StaticAutoPtr<nsCString>* s = sPrefs[i].mValue.mAsCString;
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if (!*s) {
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DOM_CAMERA_LOGE("Preference '%s' cache is not initialized\n", aPref);
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return false;
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}
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if ((*s)->IsEmpty()) {
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DOM_CAMERA_LOGI("Preference '%s' is not set\n", aPref);
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return false;
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}
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DOM_CAMERA_LOGI("Preference '%s', got '%s'\n", aPref, (*s)->get());
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aVal = **s;
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return true;
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}
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/* static */
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bool
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CameraPreferences::GetPref(const char* aPref, nsresult& aVal)
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{
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MOZ_ASSERT(sPrefMonitor, "sPrefMonitor missing in CameraPreferences::GetPref()");
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MonitorAutoLock mon(*sPrefMonitor);
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uint32_t i = PrefToIndex(aPref);
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if (i == kPrefNotFound || i >= ArrayLength(sPrefs)) {
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DOM_CAMERA_LOGW("Preference '%s' is not tracked by CameraPreferences\n", aPref);
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return false;
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}
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if (sPrefs[i].mValueType != kPrefValueIsNsResult) {
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DOM_CAMERA_LOGW("Preference '%s' is not an nsresult type\n", aPref);
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return false;
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}
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nsresult v = *sPrefs[i].mValue.mAsNsResult;
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if (v == NS_OK) {
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DOM_CAMERA_LOGW("Preference '%s' is not set\n", aPref);
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return false;
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}
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DOM_CAMERA_LOGI("Preference '%s', got 0x%x\n", aPref, v);
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aVal = v;
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return true;
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}
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/* static */
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bool
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CameraPreferences::GetPref(const char* aPref, uint32_t& aVal)
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{
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MOZ_ASSERT(sPrefMonitor, "sPrefMonitor missing in CameraPreferences::GetPref()");
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MonitorAutoLock mon(*sPrefMonitor);
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uint32_t i = PrefToIndex(aPref);
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if (i == kPrefNotFound || i >= ArrayLength(sPrefs)) {
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DOM_CAMERA_LOGW("Preference '%s' is not tracked by CameraPreferences\n", aPref);
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return false;
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}
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if (sPrefs[i].mValueType != kPrefValueIsUint32) {
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DOM_CAMERA_LOGW("Preference '%s' is not a uint32_t type\n", aPref);
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return false;
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}
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uint32_t v = *sPrefs[i].mValue.mAsUint32;
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DOM_CAMERA_LOGI("Preference '%s', got %u\n", aPref, v);
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aVal = v;
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return true;
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}
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/* static */
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bool
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CameraPreferences::GetPref(const char* aPref, bool& aVal)
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{
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MOZ_ASSERT(sPrefMonitor, "sPrefMonitor missing in CameraPreferences::GetPref()");
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MonitorAutoLock mon(*sPrefMonitor);
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uint32_t i = PrefToIndex(aPref);
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if (i == kPrefNotFound || i >= ArrayLength(sPrefs)) {
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DOM_CAMERA_LOGW("Preference '%s' is not tracked by CameraPreferences\n", aPref);
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return false;
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}
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if (sPrefs[i].mValueType != kPrefValueIsBoolean) {
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DOM_CAMERA_LOGW("Preference '%s' is not a boolean type\n", aPref);
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return false;
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}
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bool v = *sPrefs[i].mValue.mAsBoolean;
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DOM_CAMERA_LOGI("Preference '%s', got %s\n", aPref, v ? "true" : "false");
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aVal = v;
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return true;
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}
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