diff -r 000000000000 -r 6474c204b198 dom/camera/DOMCameraCapabilities.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/camera/DOMCameraCapabilities.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,312 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 "DOMCameraCapabilities.h"
+#include "nsPIDOMWindow.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/CameraManagerBinding.h"
+#include "mozilla/dom/CameraCapabilitiesBinding.h"
+#include "Navigator.h"
+#include "CameraCommon.h"
+#include "ICameraControl.h"
+#include "CameraRecorderProfiles.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(CameraCapabilities)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CameraCapabilities)
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow)
+  tmp->mRecorderProfiles = JS::UndefinedValue();
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(CameraCapabilities)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CameraCapabilities)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mRecorderProfiles)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(CameraCapabilities)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(CameraCapabilities)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CameraCapabilities)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+/* static */
+bool
+CameraCapabilities::HasSupport(JSContext* aCx, JSObject* aGlobal)
+{
+  return Navigator::HasCameraSupport(aCx, aGlobal);
+}
+
+CameraCapabilities::CameraCapabilities(nsPIDOMWindow* aWindow)
+  : mRecorderProfiles(JS::UndefinedValue())
+  , mWindow(aWindow)
+{
+  DOM_CAMERA_LOGT("%s:%d : this=%p\n", __func__, __LINE__, this);
+  MOZ_COUNT_CTOR(CameraCapabilities);
+  mozilla::HoldJSObjects(this);
+  SetIsDOMBinding();
+}
+
+CameraCapabilities::~CameraCapabilities()
+{
+  DOM_CAMERA_LOGT("%s:%d : this=%p\n", __func__, __LINE__, this);
+  mRecorderProfiles = JS::UndefinedValue();
+  mozilla::DropJSObjects(this);
+  MOZ_COUNT_DTOR(CameraCapabilities);
+}
+
+JSObject*
+CameraCapabilities::WrapObject(JSContext* aCx)
+{
+  return CameraCapabilitiesBinding::Wrap(aCx, this);
+}
+
+#define LOG_IF_ERROR(rv, param)                               \
+  do {                                                        \
+    if (NS_FAILED(rv)) {                                      \
+      DOM_CAMERA_LOGW("Error %x trying to get " #param "\n",  \
+        (rv));                                                \
+    }                                                         \
+  } while(0)
+
+nsresult
+CameraCapabilities::TranslateToDictionary(ICameraControl* aCameraControl,
+                                          uint32_t aKey, nsTArray<CameraSize>& aSizes)
+{
+  nsresult rv;
+  nsTArray<ICameraControl::Size> sizes;
+
+  rv = aCameraControl->Get(aKey, sizes);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  aSizes.Clear();
+  aSizes.SetCapacity(sizes.Length());
+  for (uint32_t i = 0; i < sizes.Length(); ++i) {
+    CameraSize* s = aSizes.AppendElement();
+    s->mWidth = sizes[i].width;
+    s->mHeight = sizes[i].height;
+  }
+
+  return NS_OK;
+}
+
+nsresult
+CameraCapabilities::Populate(ICameraControl* aCameraControl)
+{
+  NS_ENSURE_TRUE(aCameraControl, NS_ERROR_INVALID_ARG);
+
+  nsresult rv;
+
+  rv = TranslateToDictionary(aCameraControl, CAMERA_PARAM_SUPPORTED_PREVIEWSIZES, mPreviewSizes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_PREVIEWSIZES);
+
+  rv = TranslateToDictionary(aCameraControl, CAMERA_PARAM_SUPPORTED_PICTURESIZES, mPictureSizes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_PICTURESIZES);
+
+  rv = TranslateToDictionary(aCameraControl, CAMERA_PARAM_SUPPORTED_JPEG_THUMBNAIL_SIZES, mThumbnailSizes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_JPEG_THUMBNAIL_SIZES);
+
+  rv = TranslateToDictionary(aCameraControl, CAMERA_PARAM_SUPPORTED_VIDEOSIZES, mVideoSizes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_VIDEOSIZES);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_PICTUREFORMATS, mFileFormats);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_PICTUREFORMATS);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_WHITEBALANCES, mWhiteBalanceModes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_WHITEBALANCES);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_SCENEMODES, mSceneModes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_SCENEMODES);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_EFFECTS, mEffects);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_EFFECTS);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_FLASHMODES, mFlashModes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_FLASHMODES);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_FOCUSMODES, mFocusModes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_FOCUSMODES);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_ISOMODES, mIsoModes);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_ISOMODES);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_ZOOMRATIOS, mZoomRatios);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_ZOOMRATIOS);
+
+  int32_t areas;
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_MAXFOCUSAREAS, areas);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_MAXFOCUSAREAS);
+  mMaxFocusAreas = areas < 0 ? 0 : areas;
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_MAXMETERINGAREAS, areas);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_MAXMETERINGAREAS);
+  mMaxMeteringAreas = areas < 0 ? 0 : areas;
+
+  int32_t faces;
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_MAXDETECTEDFACES, faces);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_MAXDETECTEDFACES);
+  mMaxDetectedFaces = faces < 0 ? 0 : faces;
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_MINEXPOSURECOMPENSATION, mMinExposureCompensation);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_MINEXPOSURECOMPENSATION);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_MAXEXPOSURECOMPENSATION, mMaxExposureCompensation);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_MAXEXPOSURECOMPENSATION);
+
+  rv = aCameraControl->Get(CAMERA_PARAM_SUPPORTED_EXPOSURECOMPENSATIONSTEP, mExposureCompensationStep);
+  LOG_IF_ERROR(rv, CAMERA_PARAM_SUPPORTED_EXPOSURECOMPENSATIONSTEP);
+
+  mRecorderProfileManager = aCameraControl->GetRecorderProfileManager();
+  if (!mRecorderProfileManager) {
+    DOM_CAMERA_LOGW("Unable to get recorder profile manager\n");
+  } else {
+    AutoJSContext js;
+
+    JS::Rooted<JSObject*> o(js);
+    nsresult rv = mRecorderProfileManager->GetJsObject(js, o.address());
+    if (NS_FAILED(rv)) {
+      DOM_CAMERA_LOGE("Failed to JS-objectify profile manager (%d)\n", rv);
+      return rv;
+    }
+
+    mRecorderProfiles = JS::ObjectValue(*o);
+  }
+
+  // For now, always return success, since the presence or absence of capabilities
+  // indicates whether or not they are supported.
+  return NS_OK;
+}
+
+void
+CameraCapabilities::GetPreviewSizes(nsTArray<dom::CameraSize>& retval) const
+{
+  retval = mPreviewSizes;
+}
+
+void
+CameraCapabilities::GetPictureSizes(nsTArray<dom::CameraSize>& retval) const
+{
+  retval = mPictureSizes;
+}
+
+void
+CameraCapabilities::GetThumbnailSizes(nsTArray<dom::CameraSize>& retval) const
+{
+  retval = mThumbnailSizes;
+}
+
+void
+CameraCapabilities::GetVideoSizes(nsTArray<dom::CameraSize>& retval) const
+{
+  retval = mVideoSizes;
+}
+
+void
+CameraCapabilities::GetFileFormats(nsTArray<nsString>& retval) const
+{
+  retval = mFileFormats;
+}
+
+void
+CameraCapabilities::GetWhiteBalanceModes(nsTArray<nsString>& retval) const
+{
+  retval = mWhiteBalanceModes;
+}
+
+void
+CameraCapabilities::GetSceneModes(nsTArray<nsString>& retval) const
+{
+  retval = mSceneModes;
+}
+
+void
+CameraCapabilities::GetEffects(nsTArray<nsString>& retval) const
+{
+  retval = mEffects;
+}
+
+void
+CameraCapabilities::GetFlashModes(nsTArray<nsString>& retval) const
+{
+  retval = mFlashModes;
+}
+
+void
+CameraCapabilities::GetFocusModes(nsTArray<nsString>& retval) const
+{
+  retval = mFocusModes;
+}
+
+void
+CameraCapabilities::GetZoomRatios(nsTArray<double>& retval) const
+{
+  retval = mZoomRatios;
+}
+
+uint32_t
+CameraCapabilities::MaxFocusAreas() const
+{
+  return mMaxFocusAreas;
+}
+
+uint32_t
+CameraCapabilities::MaxMeteringAreas() const
+{
+  return mMaxMeteringAreas;
+}
+
+uint32_t
+CameraCapabilities::MaxDetectedFaces() const
+{
+  return mMaxDetectedFaces;
+}
+
+double
+CameraCapabilities::MinExposureCompensation() const
+{
+  return mMinExposureCompensation;
+}
+
+double
+CameraCapabilities::MaxExposureCompensation() const
+{
+  return mMaxExposureCompensation;
+}
+
+double
+CameraCapabilities::ExposureCompensationStep() const
+{
+  return mExposureCompensationStep;
+}
+
+void
+CameraCapabilities::GetRecorderProfiles(JSContext* aCx,
+                                        JS::MutableHandle<JS::Value> aRetval) const
+{
+  JS::ExposeValueToActiveJS(mRecorderProfiles);
+  aRetval.set(mRecorderProfiles);
+}
+
+void
+CameraCapabilities::GetIsoModes(nsTArray<nsString>& retval) const
+{
+  retval = mIsoModes;
+}
+
+} // namespace dom
+} // namespace mozilla