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image_capture.cc
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image_capture.cc
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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/imagecapture/image_capture.h"
#include <memory>
#include <utility>
#include "base/callback_helpers.h"
#include "base/trace_event/trace_event.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "third_party/blink/public/common/browser_interface_broker_proxy.h"
#include "third_party/blink/public/mojom/permissions/permission_status.mojom-blink.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/bindings/core/v8/callback_promise_adapter.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_fill_light_mode.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_media_settings_range.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_media_track_capabilities.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_media_track_constraints.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_photo_capabilities.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_point_2d.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_union_boolean_constrainbooleanparameters.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_union_boolean_constraindoublerange_double.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_union_constraindomstringparameters_string_stringsequence.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_union_constraindoublerange_double.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_union_constrainpoint2dparameters_point2dsequence.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/fileapi/blob.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/imagebitmap/image_bitmap.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/imagecapture/image_capture_frame_grabber.h"
#include "third_party/blink/renderer/modules/mediastream/media_stream_track.h"
#include "third_party/blink/renderer/modules/mediastream/media_stream_video_track.h"
#include "third_party/blink/renderer/modules/permissions/permission_utils.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_component.h"
#include "third_party/blink/renderer/platform/mojo/mojo_helper.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
using FillLightMode = media::mojom::blink::FillLightMode;
using MeteringMode = media::mojom::blink::MeteringMode;
using RedEyeReduction = media::mojom::blink::RedEyeReduction;
namespace {
const char kNoServiceError[] = "ImageCapture service unavailable.";
const char kInvalidStateTrackError[] =
"The associated Track is in an invalid state";
bool TrackIsInactive(const MediaStreamTrack& track) {
// Spec instructs to return an exception if the Track's readyState() is not
// "live". Also reject if the track is disabled or muted.
return track.readyState() != "live" || !track.enabled() || track.muted();
}
MeteringMode ParseMeteringMode(const String& blink_mode) {
if (blink_mode == "manual")
return MeteringMode::MANUAL;
if (blink_mode == "single-shot")
return MeteringMode::SINGLE_SHOT;
if (blink_mode == "continuous")
return MeteringMode::CONTINUOUS;
if (blink_mode == "none")
return MeteringMode::NONE;
NOTREACHED();
return MeteringMode::NONE;
}
FillLightMode ParseFillLightMode(const String& blink_mode) {
if (blink_mode == "off")
return FillLightMode::OFF;
if (blink_mode == "auto")
return FillLightMode::AUTO;
if (blink_mode == "flash")
return FillLightMode::FLASH;
NOTREACHED();
return FillLightMode::OFF;
}
WebString ToString(MeteringMode value) {
switch (value) {
case MeteringMode::NONE:
return WebString::FromUTF8("none");
case MeteringMode::MANUAL:
return WebString::FromUTF8("manual");
case MeteringMode::SINGLE_SHOT:
return WebString::FromUTF8("single-shot");
case MeteringMode::CONTINUOUS:
return WebString::FromUTF8("continuous");
}
}
V8FillLightMode ToV8FillLightMode(FillLightMode value) {
switch (value) {
case FillLightMode::OFF:
return V8FillLightMode(V8FillLightMode::Enum::kOff);
case FillLightMode::AUTO:
return V8FillLightMode(V8FillLightMode::Enum::kAuto);
case FillLightMode::FLASH:
return V8FillLightMode(V8FillLightMode::Enum::kFlash);
}
}
WebString ToString(RedEyeReduction value) {
switch (value) {
case RedEyeReduction::NEVER:
return WebString::FromUTF8("never");
case RedEyeReduction::ALWAYS:
return WebString::FromUTF8("always");
case RedEyeReduction::CONTROLLABLE:
return WebString::FromUTF8("controllable");
}
}
MediaSettingsRange* ToMediaSettingsRange(
const media::mojom::blink::Range& range) {
MediaSettingsRange* result = MediaSettingsRange::Create();
result->setMax(range.max);
result->setMin(range.min);
result->setStep(range.step);
return result;
}
} // anonymous namespace
ImageCapture* ImageCapture::Create(ExecutionContext* context,
MediaStreamTrack* track,
ExceptionState& exception_state) {
if (track->kind() != "video") {
exception_state.ThrowDOMException(
DOMExceptionCode::kNotSupportedError,
"Cannot create an ImageCapturer from a non-video Track.");
return nullptr;
}
// The initial PTZ permission comes from the internal ImageCapture object of
// the track, if already created.
bool pan_tilt_zoom_allowed =
(track->GetImageCapture() &&
track->GetImageCapture()->HasPanTiltZoomPermissionGranted());
return MakeGarbageCollected<ImageCapture>(
context, track, pan_tilt_zoom_allowed, base::DoNothing());
}
ImageCapture::~ImageCapture() {
DCHECK(!HasEventListeners());
// There should be no more outstanding |m_serviceRequests| at this point
// since each of them holds a persistent handle to this object.
DCHECK(service_requests_.IsEmpty());
}
const AtomicString& ImageCapture::InterfaceName() const {
return event_target_names::kImageCapture;
}
ExecutionContext* ImageCapture::GetExecutionContext() const {
return ExecutionContextLifecycleObserver::GetExecutionContext();
}
bool ImageCapture::HasPendingActivity() const {
return GetExecutionContext() && HasEventListeners();
}
void ImageCapture::ContextDestroyed() {
RemoveAllEventListeners();
service_requests_.clear();
DCHECK(!HasEventListeners());
}
ScriptPromise ImageCapture::getPhotoCapabilities(ScriptState* script_state) {
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
if (TrackIsInactive(*stream_track_)) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kInvalidStateError, kInvalidStateTrackError));
return promise;
}
if (!service_.is_bound()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotFoundError, kNoServiceError));
return promise;
}
service_requests_.insert(resolver);
auto resolver_cb = WTF::Bind(&ImageCapture::ResolveWithPhotoCapabilities,
WrapPersistent(this));
// m_streamTrack->component()->source()->id() is the renderer "name" of the
// camera;
// TODO(mcasas) consider sending the security origin as well:
// scriptState->getExecutionContext()->getSecurityOrigin()->toString()
service_->GetPhotoState(
stream_track_->Component()->Source()->Id(),
WTF::Bind(&ImageCapture::OnMojoGetPhotoState, WrapPersistent(this),
WrapPersistent(resolver), std::move(resolver_cb),
false /* trigger_take_photo */));
return promise;
}
ScriptPromise ImageCapture::getPhotoSettings(ScriptState* script_state) {
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
if (TrackIsInactive(*stream_track_)) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kInvalidStateError, kInvalidStateTrackError));
return promise;
}
if (!service_.is_bound()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotFoundError, kNoServiceError));
return promise;
}
service_requests_.insert(resolver);
auto resolver_cb =
WTF::Bind(&ImageCapture::ResolveWithPhotoSettings, WrapPersistent(this));
// m_streamTrack->component()->source()->id() is the renderer "name" of the
// camera;
// TODO(mcasas) consider sending the security origin as well:
// scriptState->getExecutionContext()->getSecurityOrigin()->toString()
service_->GetPhotoState(
stream_track_->Component()->Source()->Id(),
WTF::Bind(&ImageCapture::OnMojoGetPhotoState, WrapPersistent(this),
WrapPersistent(resolver), std::move(resolver_cb),
false /* trigger_take_photo */));
return promise;
}
ScriptPromise ImageCapture::setOptions(ScriptState* script_state,
const PhotoSettings* photo_settings,
bool trigger_take_photo /* = false */) {
TRACE_EVENT_INSTANT0(TRACE_DISABLED_BY_DEFAULT("video_and_image_capture"),
"ImageCapture::setOptions", TRACE_EVENT_SCOPE_PROCESS);
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
if (TrackIsInactive(*stream_track_)) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kInvalidStateError, kInvalidStateTrackError));
return promise;
}
if (!service_.is_bound()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotFoundError, kNoServiceError));
return promise;
}
service_requests_.insert(resolver);
// TODO(mcasas): should be using a mojo::StructTraits instead.
auto settings = media::mojom::blink::PhotoSettings::New();
settings->has_height = photo_settings->hasImageHeight();
if (settings->has_height) {
const double height = photo_settings->imageHeight();
if (photo_capabilities_ && photo_capabilities_->hasImageHeight() &&
(height < photo_capabilities_->imageHeight()->min() ||
height > photo_capabilities_->imageHeight()->max())) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"imageHeight setting out of range"));
return promise;
}
settings->height = height;
}
settings->has_width = photo_settings->hasImageWidth();
if (settings->has_width) {
const double width = photo_settings->imageWidth();
if (photo_capabilities_ && photo_capabilities_->hasImageWidth() &&
(width < photo_capabilities_->imageWidth()->min() ||
width > photo_capabilities_->imageWidth()->max())) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"imageWidth setting out of range"));
return promise;
}
settings->width = width;
}
settings->has_red_eye_reduction = photo_settings->hasRedEyeReduction();
if (settings->has_red_eye_reduction) {
if (photo_capabilities_ && photo_capabilities_->hasRedEyeReduction() &&
photo_capabilities_->redEyeReduction() !=
V8RedEyeReduction::Enum::kControllable) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"redEyeReduction is not controllable."));
return promise;
}
settings->red_eye_reduction = photo_settings->redEyeReduction();
}
settings->has_fill_light_mode = photo_settings->hasFillLightMode();
if (settings->has_fill_light_mode) {
const String fill_light_mode = photo_settings->fillLightMode();
if (photo_capabilities_ && photo_capabilities_->hasFillLightMode() &&
photo_capabilities_->fillLightMode().Find(fill_light_mode) ==
kNotFound) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "Unsupported fillLightMode"));
return promise;
}
settings->fill_light_mode = ParseFillLightMode(fill_light_mode);
}
service_->SetOptions(
stream_track_->Component()->Source()->Id(), std::move(settings),
WTF::Bind(&ImageCapture::OnMojoSetOptions, WrapPersistent(this),
WrapPersistent(resolver), trigger_take_photo));
return promise;
}
ScriptPromise ImageCapture::takePhoto(ScriptState* script_state,
const PhotoSettings* photo_settings) {
TRACE_EVENT_INSTANT0(TRACE_DISABLED_BY_DEFAULT("video_and_image_capture"),
"ImageCapture::takePhoto (with settings)",
TRACE_EVENT_SCOPE_PROCESS);
return setOptions(script_state, photo_settings,
true /* trigger_take_photo */);
}
ScriptPromise ImageCapture::grabFrame(ScriptState* script_state) {
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
if (TrackIsInactive(*stream_track_)) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kInvalidStateError, kInvalidStateTrackError));
return promise;
}
// Create |m_frameGrabber| the first time.
if (!frame_grabber_) {
frame_grabber_ = std::make_unique<ImageCaptureFrameGrabber>();
}
if (!frame_grabber_) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kUnknownError, "Couldn't create platform resources"));
return promise;
}
auto resolver_callback_adapter =
std::make_unique<CallbackPromiseAdapter<ImageBitmap, void>>(resolver);
frame_grabber_->GrabFrame(stream_track_->Component(),
std::move(resolver_callback_adapter),
ExecutionContext::From(script_state)
->GetTaskRunner(TaskType::kDOMManipulation));
return promise;
}
void ImageCapture::GetMediaTrackCapabilities(
MediaTrackCapabilities* capabilities) const {
// Merge any present |capabilities_| members into |capabilities|.
if (capabilities_->hasWhiteBalanceMode())
capabilities->setWhiteBalanceMode(capabilities_->whiteBalanceMode());
if (capabilities_->hasExposureMode())
capabilities->setExposureMode(capabilities_->exposureMode());
if (capabilities_->hasFocusMode())
capabilities->setFocusMode(capabilities_->focusMode());
if (capabilities_->hasExposureCompensation()) {
capabilities->setExposureCompensation(
capabilities_->exposureCompensation());
}
if (capabilities_->hasExposureTime())
capabilities->setExposureTime(capabilities_->exposureTime());
if (capabilities_->hasColorTemperature())
capabilities->setColorTemperature(capabilities_->colorTemperature());
if (capabilities_->hasIso())
capabilities->setIso(capabilities_->iso());
if (capabilities_->hasBrightness())
capabilities->setBrightness(capabilities_->brightness());
if (capabilities_->hasContrast())
capabilities->setContrast(capabilities_->contrast());
if (capabilities_->hasSaturation())
capabilities->setSaturation(capabilities_->saturation());
if (capabilities_->hasSharpness())
capabilities->setSharpness(capabilities_->sharpness());
if (capabilities_->hasFocusDistance())
capabilities->setFocusDistance(capabilities_->focusDistance());
if (HasPanTiltZoomPermissionGranted()) {
if (capabilities_->hasPan())
capabilities->setPan(capabilities_->pan());
if (capabilities_->hasTilt())
capabilities->setTilt(capabilities_->tilt());
if (capabilities_->hasZoom())
capabilities->setZoom(capabilities_->zoom());
}
if (capabilities_->hasTorch())
capabilities->setTorch(capabilities_->torch());
}
// TODO(mcasas): make the implementation fully Spec compliant, see the TODOs
// inside the method, https://crbug.com/708723.
void ImageCapture::SetMediaTrackConstraints(
ScriptPromiseResolver* resolver,
const HeapVector<Member<MediaTrackConstraintSet>>& constraints_vector) {
DCHECK_GT(constraints_vector.size(), 0u);
// TODO(mcasas): add support more than one single advanced constraint.
const MediaTrackConstraintSet* constraints = constraints_vector[0];
ExecutionContext* context = GetExecutionContext();
if (constraints->hasWhiteBalanceMode())
UseCounter::Count(context, WebFeature::kImageCaptureWhiteBalanceMode);
if (constraints->hasExposureMode())
UseCounter::Count(context, WebFeature::kImageCaptureExposureMode);
if (constraints->hasFocusMode())
UseCounter::Count(context, WebFeature::kImageCaptureFocusMode);
if (constraints->hasPointsOfInterest())
UseCounter::Count(context, WebFeature::kImageCapturePointsOfInterest);
if (constraints->hasExposureCompensation())
UseCounter::Count(context, WebFeature::kImageCaptureExposureCompensation);
if (constraints->hasExposureTime())
UseCounter::Count(context, WebFeature::kImageCaptureExposureTime);
if (constraints->hasColorTemperature())
UseCounter::Count(context, WebFeature::kImageCaptureColorTemperature);
if (constraints->hasIso())
UseCounter::Count(context, WebFeature::kImageCaptureIso);
if (constraints->hasBrightness())
UseCounter::Count(context, WebFeature::kImageCaptureBrightness);
if (constraints->hasContrast())
UseCounter::Count(context, WebFeature::kImageCaptureContrast);
if (constraints->hasSaturation())
UseCounter::Count(context, WebFeature::kImageCaptureSaturation);
if (constraints->hasSharpness())
UseCounter::Count(context, WebFeature::kImageCaptureSharpness);
if (constraints->hasFocusDistance())
UseCounter::Count(context, WebFeature::kImageCaptureFocusDistance);
if (constraints->hasPan())
UseCounter::Count(context, WebFeature::kImageCapturePan);
if (constraints->hasTilt())
UseCounter::Count(context, WebFeature::kImageCaptureTilt);
if (constraints->hasZoom())
UseCounter::Count(context, WebFeature::kImageCaptureZoom);
if (constraints->hasTorch())
UseCounter::Count(context, WebFeature::kImageCaptureTorch);
if (!service_.is_bound()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotFoundError, kNoServiceError));
return;
}
if ((constraints->hasWhiteBalanceMode() &&
!capabilities_->hasWhiteBalanceMode()) ||
(constraints->hasExposureMode() && !capabilities_->hasExposureMode()) ||
(constraints->hasFocusMode() && !capabilities_->hasFocusMode()) ||
(constraints->hasExposureCompensation() &&
!capabilities_->hasExposureCompensation()) ||
(constraints->hasExposureTime() && !capabilities_->hasExposureTime()) ||
(constraints->hasColorTemperature() &&
!capabilities_->hasColorTemperature()) ||
(constraints->hasIso() && !capabilities_->hasIso()) ||
(constraints->hasBrightness() && !capabilities_->hasBrightness()) ||
(constraints->hasContrast() && !capabilities_->hasContrast()) ||
(constraints->hasSaturation() && !capabilities_->hasSaturation()) ||
(constraints->hasSharpness() && !capabilities_->hasSharpness()) ||
(constraints->hasFocusDistance() && !capabilities_->hasFocusDistance()) ||
(constraints->hasPan() &&
!(capabilities_->hasPan() && HasPanTiltZoomPermissionGranted())) ||
(constraints->hasTilt() &&
!(capabilities_->hasTilt() && HasPanTiltZoomPermissionGranted())) ||
(constraints->hasZoom() &&
!(capabilities_->hasZoom() && HasPanTiltZoomPermissionGranted())) ||
(constraints->hasTorch() && !capabilities_->hasTorch())) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "Unsupported constraint(s)"));
return;
}
auto settings = media::mojom::blink::PhotoSettings::New();
MediaTrackConstraintSet* temp_constraints =
current_constraints_ ? current_constraints_.Get()
: MediaTrackConstraintSet::Create();
// TODO(mcasas): support other Mode types beyond simple string i.e. the
// equivalents of "sequence<DOMString>"" or "ConstrainDOMStringParameters".
settings->has_white_balance_mode =
constraints->hasWhiteBalanceMode() &&
constraints->whiteBalanceMode()->IsString();
if (settings->has_white_balance_mode) {
const auto white_balance_mode =
constraints->whiteBalanceMode()->GetAsString();
if (capabilities_->whiteBalanceMode().Find(white_balance_mode) ==
kNotFound) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"Unsupported whiteBalanceMode."));
return;
}
temp_constraints->setWhiteBalanceMode(constraints->whiteBalanceMode());
settings->white_balance_mode = ParseMeteringMode(white_balance_mode);
}
settings->has_exposure_mode =
constraints->hasExposureMode() && constraints->exposureMode()->IsString();
if (settings->has_exposure_mode) {
const auto exposure_mode = constraints->exposureMode()->GetAsString();
if (capabilities_->exposureMode().Find(exposure_mode) == kNotFound) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "Unsupported exposureMode."));
return;
}
temp_constraints->setExposureMode(constraints->exposureMode());
settings->exposure_mode = ParseMeteringMode(exposure_mode);
}
settings->has_focus_mode =
constraints->hasFocusMode() && constraints->focusMode()->IsString();
if (settings->has_focus_mode) {
const auto focus_mode = constraints->focusMode()->GetAsString();
if (capabilities_->focusMode().Find(focus_mode) == kNotFound) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "Unsupported focusMode."));
return;
}
temp_constraints->setFocusMode(constraints->focusMode());
settings->focus_mode = ParseMeteringMode(focus_mode);
}
// TODO(mcasas): support ConstrainPoint2DParameters.
if (constraints->hasPointsOfInterest() &&
constraints->pointsOfInterest()->IsPoint2DSequence()
) {
for (const auto& point :
constraints->pointsOfInterest()->GetAsPoint2DSequence()
) {
auto mojo_point = media::mojom::blink::Point2D::New();
mojo_point->x = point->x();
mojo_point->y = point->y();
settings->points_of_interest.push_back(std::move(mojo_point));
}
temp_constraints->setPointsOfInterest(constraints->pointsOfInterest());
}
// TODO(mcasas): support ConstrainDoubleRange where applicable.
settings->has_exposure_compensation =
constraints->hasExposureCompensation() &&
constraints->exposureCompensation()->IsDouble();
if (settings->has_exposure_compensation) {
const auto exposure_compensation =
constraints->exposureCompensation()->GetAsDouble();
if (exposure_compensation < capabilities_->exposureCompensation()->min() ||
exposure_compensation > capabilities_->exposureCompensation()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"exposureCompensation setting out of range"));
return;
}
temp_constraints->setExposureCompensation(
constraints->exposureCompensation());
settings->exposure_compensation = exposure_compensation;
}
settings->has_exposure_time =
constraints->hasExposureTime() && constraints->exposureTime()->IsDouble();
if (settings->has_exposure_time) {
const auto exposure_time = constraints->exposureTime()->GetAsDouble();
if (exposure_time < capabilities_->exposureTime()->min() ||
exposure_time > capabilities_->exposureTime()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"exposureTime setting out of range"));
return;
}
temp_constraints->setExposureTime(constraints->exposureTime());
settings->exposure_time = exposure_time;
}
settings->has_color_temperature = constraints->hasColorTemperature() &&
constraints->colorTemperature()->IsDouble();
if (settings->has_color_temperature) {
const auto color_temperature =
constraints->colorTemperature()->GetAsDouble();
if (color_temperature < capabilities_->colorTemperature()->min() ||
color_temperature > capabilities_->colorTemperature()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"colorTemperature setting out of range"));
return;
}
temp_constraints->setColorTemperature(constraints->colorTemperature());
settings->color_temperature = color_temperature;
}
settings->has_iso = constraints->hasIso() && constraints->iso()->IsDouble();
if (settings->has_iso) {
const auto iso = constraints->iso()->GetAsDouble();
if (iso < capabilities_->iso()->min() ||
iso > capabilities_->iso()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "iso setting out of range"));
return;
}
temp_constraints->setIso(constraints->iso());
settings->iso = iso;
}
settings->has_brightness =
constraints->hasBrightness() && constraints->brightness()->IsDouble();
if (settings->has_brightness) {
const auto brightness = constraints->brightness()->GetAsDouble();
if (brightness < capabilities_->brightness()->min() ||
brightness > capabilities_->brightness()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"brightness setting out of range"));
return;
}
temp_constraints->setBrightness(constraints->brightness());
settings->brightness = brightness;
}
settings->has_contrast =
constraints->hasContrast() && constraints->contrast()->IsDouble();
if (settings->has_contrast) {
const auto contrast = constraints->contrast()->GetAsDouble();
if (contrast < capabilities_->contrast()->min() ||
contrast > capabilities_->contrast()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"contrast setting out of range"));
return;
}
temp_constraints->setContrast(constraints->contrast());
settings->contrast = contrast;
}
settings->has_saturation =
constraints->hasSaturation() && constraints->saturation()->IsDouble();
if (settings->has_saturation) {
const auto saturation = constraints->saturation()->GetAsDouble();
if (saturation < capabilities_->saturation()->min() ||
saturation > capabilities_->saturation()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"saturation setting out of range"));
return;
}
temp_constraints->setSaturation(constraints->saturation());
settings->saturation = saturation;
}
settings->has_sharpness =
constraints->hasSharpness() && constraints->sharpness()->IsDouble();
if (settings->has_sharpness) {
const auto sharpness = constraints->sharpness()->GetAsDouble();
if (sharpness < capabilities_->sharpness()->min() ||
sharpness > capabilities_->sharpness()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"sharpness setting out of range"));
return;
}
temp_constraints->setSharpness(constraints->sharpness());
settings->sharpness = sharpness;
}
settings->has_focus_distance = constraints->hasFocusDistance() &&
constraints->focusDistance()->IsDouble();
if (settings->has_focus_distance) {
const auto focus_distance = constraints->focusDistance()->GetAsDouble();
if (focus_distance < capabilities_->focusDistance()->min() ||
focus_distance > capabilities_->focusDistance()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError,
"focusDistance setting out of range"));
return;
}
temp_constraints->setFocusDistance(constraints->focusDistance());
settings->focus_distance = focus_distance;
}
settings->has_pan = constraints->hasPan() && constraints->pan()->IsDouble();
if (settings->has_pan) {
if (!IsPageVisible()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kSecurityError, "the page is not visible"));
return;
}
const auto pan = constraints->pan()->GetAsDouble();
if (pan < capabilities_->pan()->min() ||
pan > capabilities_->pan()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "pan setting out of range"));
return;
}
temp_constraints->setPan(constraints->pan());
settings->pan = pan;
}
settings->has_tilt =
constraints->hasTilt() && constraints->tilt()->IsDouble();
if (settings->has_tilt) {
if (!IsPageVisible()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kSecurityError, "the page is not visible"));
return;
}
const auto tilt = constraints->tilt()->GetAsDouble();
if (tilt < capabilities_->tilt()->min() ||
tilt > capabilities_->tilt()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "tilt setting out of range"));
return;
}
temp_constraints->setTilt(constraints->tilt());
settings->tilt = tilt;
}
settings->has_zoom =
constraints->hasZoom() && constraints->zoom()->IsDouble();
if (settings->has_zoom) {
if (!IsPageVisible()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kSecurityError, "the page is not visible"));
return;
}
const auto zoom = constraints->zoom()->GetAsDouble();
if (zoom < capabilities_->zoom()->min() ||
zoom > capabilities_->zoom()->max()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "zoom setting out of range"));
return;
}
temp_constraints->setZoom(constraints->zoom());
settings->zoom = zoom;
}
// TODO(mcasas): support ConstrainBooleanParameters where applicable.
settings->has_torch =
constraints->hasTorch() && constraints->torch()->IsBoolean();
if (settings->has_torch) {
const auto torch = constraints->torch()->GetAsBoolean();
if (torch && !capabilities_->torch()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kNotSupportedError, "torch not supported"));
return;
}
temp_constraints->setTorch(constraints->torch());
settings->torch = torch;
}
current_constraints_ = temp_constraints;
service_requests_.insert(resolver);
service_->SetOptions(
stream_track_->Component()->Source()->Id(), std::move(settings),
WTF::Bind(&ImageCapture::OnMojoSetOptions, WrapPersistent(this),
WrapPersistent(resolver), false /* trigger_take_photo */));
}
void ImageCapture::SetPanTiltZoomSettingsFromTrack(
base::OnceClosure initialized_callback,
media::mojom::blink::PhotoStatePtr photo_state) {
UpdateMediaTrackCapabilities(base::DoNothing(), std::move(photo_state));
auto* video_track = MediaStreamVideoTrack::From(stream_track_->Component());
DCHECK(video_track);
absl::optional<double> pan = video_track->pan();
absl::optional<double> tilt = video_track->tilt();
absl::optional<double> zoom = video_track->zoom();
const bool ptz_requested =
pan.has_value() || tilt.has_value() || zoom.has_value();
const bool ptz_supported = capabilities_->hasPan() ||
capabilities_->hasTilt() ||
capabilities_->hasZoom();
if (!ptz_supported || !ptz_requested || !HasPanTiltZoomPermissionGranted() ||
!service_.is_bound()) {
std::move(initialized_callback).Run();
return;
}
ExecutionContext* context = GetExecutionContext();
if (pan.has_value())
UseCounter::Count(context, WebFeature::kImageCapturePan);
if (tilt.has_value())
UseCounter::Count(context, WebFeature::kImageCaptureTilt);
if (zoom.has_value())
UseCounter::Count(context, WebFeature::kImageCaptureZoom);
auto settings = media::mojom::blink::PhotoSettings::New();
if (capabilities_->hasPan() && pan.has_value() &&
pan.value() >= capabilities_->pan()->min() &&
pan.value() <= capabilities_->pan()->max()) {
settings->has_pan = true;
settings->pan = pan.value();
}
if (capabilities_->hasTilt() && tilt.has_value() &&
tilt.value() >= capabilities_->tilt()->min() &&
tilt.value() <= capabilities_->tilt()->max()) {
settings->has_tilt = true;
settings->tilt = tilt.value();
}
if (capabilities_->hasZoom() && zoom.has_value() &&
zoom.value() >= capabilities_->zoom()->min() &&
zoom.value() <= capabilities_->zoom()->max()) {
settings->has_zoom = true;
settings->zoom = zoom.value();
}
service_->SetOptions(
stream_track_->Component()->Source()->Id(), std::move(settings),
WTF::Bind(&ImageCapture::OnSetPanTiltZoomSettingsFromTrack,
WrapPersistent(this), std::move(initialized_callback)));
}
void ImageCapture::OnSetPanTiltZoomSettingsFromTrack(
base::OnceClosure done_callback,
bool result) {
service_->GetPhotoState(
stream_track_->Component()->Source()->Id(),
WTF::Bind(&ImageCapture::UpdateMediaTrackCapabilities,
WrapPersistent(this), std::move(done_callback)));
}
const MediaTrackConstraintSet* ImageCapture::GetMediaTrackConstraints() const {
return current_constraints_;
}
void ImageCapture::ClearMediaTrackConstraints() {
current_constraints_ = nullptr;
// TODO(mcasas): Clear also any PhotoSettings that the device might have got
// configured, for that we need to know a "default" state of the device; take
// a snapshot upon first opening. https://crbug.com/700607.
}
void ImageCapture::GetMediaTrackSettings(MediaTrackSettings* settings) const {
// Merge any present |settings_| members into |settings|.
if (settings_->hasWhiteBalanceMode())
settings->setWhiteBalanceMode(settings_->whiteBalanceMode());
if (settings_->hasExposureMode())
settings->setExposureMode(settings_->exposureMode());
if (settings_->hasFocusMode())
settings->setFocusMode(settings_->focusMode());
if (settings_->hasPointsOfInterest() &&
!settings_->pointsOfInterest().IsEmpty()) {
settings->setPointsOfInterest(settings_->pointsOfInterest());
}
if (settings_->hasExposureCompensation())
settings->setExposureCompensation(settings_->exposureCompensation());
if (settings_->hasExposureTime())
settings->setExposureTime(settings_->exposureTime());
if (settings_->hasColorTemperature())
settings->setColorTemperature(settings_->colorTemperature());
if (settings_->hasIso())
settings->setIso(settings_->iso());
if (settings_->hasBrightness())
settings->setBrightness(settings_->brightness());
if (settings_->hasContrast())
settings->setContrast(settings_->contrast());
if (settings_->hasSaturation())
settings->setSaturation(settings_->saturation());
if (settings_->hasSharpness())
settings->setSharpness(settings_->sharpness());
if (settings_->hasFocusDistance())
settings->setFocusDistance(settings_->focusDistance());
if (HasPanTiltZoomPermissionGranted()) {
if (settings_->hasPan())
settings->setPan(settings_->pan());
if (settings_->hasTilt())
settings->setTilt(settings_->tilt());
if (settings_->hasZoom())
settings->setZoom(settings_->zoom());
}
if (settings_->hasTorch())
settings->setTorch(settings_->torch());
}
ImageCapture::ImageCapture(ExecutionContext* context,
MediaStreamTrack* track,
bool pan_tilt_zoom_allowed,
base::OnceClosure initialized_callback)
: ExecutionContextLifecycleObserver(context),
stream_track_(track),
service_(context),
pan_tilt_zoom_permission_(pan_tilt_zoom_allowed
? mojom::blink::PermissionStatus::GRANTED
: mojom::blink::PermissionStatus::ASK),
permission_service_(context),
permission_observer_receiver_(this, context),
capabilities_(MediaTrackCapabilities::Create()),
settings_(MediaTrackSettings::Create()),
photo_settings_(PhotoSettings::Create()) {
DCHECK(stream_track_);
DCHECK(!service_.is_bound());
DCHECK(!permission_service_.is_bound());
// This object may be constructed over an ExecutionContext that has already
// been detached. In this case the ImageCapture service will not be available.
if (!DomWindow())
return;
DomWindow()->GetBrowserInterfaceBroker().GetInterface(
service_.BindNewPipeAndPassReceiver(
context->GetTaskRunner(TaskType::kDOMManipulation)));
service_.set_disconnect_handler(WTF::Bind(
&ImageCapture::OnServiceConnectionError, WrapWeakPersistent(this)));
// Launch a retrieval of the current photo state, which arrive asynchronously
// to avoid blocking the main UI thread.
service_->GetPhotoState(
stream_track_->Component()->Source()->Id(),
WTF::Bind(&ImageCapture::SetPanTiltZoomSettingsFromTrack,
WrapPersistent(this), std::move(initialized_callback)));
ConnectToPermissionService(
context, permission_service_.BindNewPipeAndPassReceiver(
context->GetTaskRunner(TaskType::kMiscPlatformAPI)));
mojo::PendingRemote<mojom::blink::PermissionObserver> observer;
permission_observer_receiver_.Bind(
observer.InitWithNewPipeAndPassReceiver(),
context->GetTaskRunner(TaskType::kMiscPlatformAPI));
permission_service_->AddPermissionObserver(
CreateVideoCapturePermissionDescriptor(/*pan_tilt_zoom=*/true),
pan_tilt_zoom_permission_, std::move(observer));
}
void ImageCapture::OnPermissionStatusChange(
mojom::blink::PermissionStatus status) {
pan_tilt_zoom_permission_ = status;
}
bool ImageCapture::HasPanTiltZoomPermissionGranted() const {
return pan_tilt_zoom_permission_ == mojom::blink::PermissionStatus::GRANTED;
}
void ImageCapture::OnMojoGetPhotoState(
ScriptPromiseResolver* resolver,
PromiseResolverFunction resolve_function,
bool trigger_take_photo,
media::mojom::blink::PhotoStatePtr photo_state) {
DCHECK(service_requests_.Contains(resolver));
if (photo_state.is_null()) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kUnknownError, "platform error"));
service_requests_.erase(resolver);
return;
}
if (TrackIsInactive(*stream_track_)) {
resolver->Reject(MakeGarbageCollected<DOMException>(
DOMExceptionCode::kOperationError, kInvalidStateTrackError));
service_requests_.erase(resolver);
return;
}
photo_settings_ = PhotoSettings::Create();
photo_settings_->setImageHeight(photo_state->height->current);
photo_settings_->setImageWidth(photo_state->width->current);
// TODO(mcasas): collect the remaining two entries https://crbug.com/732521.
photo_capabilities_ = MakeGarbageCollected<PhotoCapabilities>();
photo_capabilities_->setRedEyeReduction(
ToString(photo_state->red_eye_reduction));
if (photo_state->height->min != 0 || photo_state->height->max != 0) {
photo_capabilities_->setImageHeight(
ToMediaSettingsRange(*photo_state->height));
}
if (photo_state->width->min != 0 || photo_state->width->max != 0) {
photo_capabilities_->setImageWidth(
ToMediaSettingsRange(*photo_state->width));
}
WTF::Vector<V8FillLightMode> fill_light_mode;
for (const auto& mode : photo_state->fill_light_mode) {
fill_light_mode.push_back(ToV8FillLightMode(mode));
}
if (!fill_light_mode.IsEmpty())
photo_capabilities_->setFillLightMode(fill_light_mode);