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https://gitlab.winehq.org/wine/wine-gecko.git
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94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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// This file should not be included by other includes, as it contains code
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#ifndef MEDIATRACKCONSTRAINTS_H_
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#define MEDIATRACKCONSTRAINTS_H_
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#include "mozilla/dom/MediaStreamTrackBinding.h"
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namespace mozilla {
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// Normalized internal version of MediaTrackConstraints to simplify downstream
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// processing. This implementation-only helper is included as needed by both
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// MediaManager (for gUM camera selection) and MediaEngine (for applyConstraints).
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template<typename T>
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class MediaTrackConstraintsN : public dom::MediaTrackConstraints
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{
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public:
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typedef T Kind;
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dom::Sequence<Kind> mRequireN;
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bool mUnsupportedRequirement;
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MediaTrackConstraintSet mRequired;
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dom::Sequence<MediaTrackConstraintSet> mNonrequired;
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MediaTrackConstraintsN(const dom::MediaTrackConstraints &aOther,
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const dom::EnumEntry* aStrings)
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: dom::MediaTrackConstraints(aOther)
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, mUnsupportedRequirement(false)
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, mStrings(aStrings)
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{
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if (mRequire.WasPassed()) {
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auto& array = mRequire.Value();
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for (uint32_t i = 0; i < array.Length(); i++) {
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auto value = ToEnum(array[i]);
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if (value != Kind::Other) {
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mRequireN.AppendElement(value);
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} else {
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mUnsupportedRequirement = true;
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}
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}
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}
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}
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protected:
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MediaTrackConstraintSet& Triage(const Kind kind) {
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if (mRequireN.IndexOf(kind) != mRequireN.NoIndex) {
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return mRequired;
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} else {
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mNonrequired.AppendElement(MediaTrackConstraintSet());
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return mNonrequired[mNonrequired.Length()-1];
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}
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}
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private:
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Kind ToEnum(const nsAString& aSrc) {
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for (size_t i = 0; mStrings[i].value; i++) {
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if (aSrc.EqualsASCII(mStrings[i].value)) {
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return Kind(i);
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}
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}
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return Kind::Other;
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}
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const dom::EnumEntry* mStrings;
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};
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struct AudioTrackConstraintsN :
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public MediaTrackConstraintsN<dom::SupportedAudioConstraints>
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{
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AudioTrackConstraintsN(const dom::MediaTrackConstraints &aOther)
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: MediaTrackConstraintsN<dom::SupportedAudioConstraints>(aOther, // B2G ICS compiler bug
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dom::SupportedAudioConstraintsValues::strings) {}
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};
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struct VideoTrackConstraintsN :
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public MediaTrackConstraintsN<dom::SupportedVideoConstraints>
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{
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VideoTrackConstraintsN(const dom::MediaTrackConstraints &aOther)
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: MediaTrackConstraintsN<dom::SupportedVideoConstraints>(aOther,
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dom::SupportedVideoConstraintsValues::strings) {
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if (mFacingMode.WasPassed()) {
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Triage(Kind::FacingMode).mFacingMode.Construct(mFacingMode.Value());
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}
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// Reminder: add handling for new constraints both here & SatisfyConstraintSet
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Triage(Kind::Width).mWidth = mWidth;
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Triage(Kind::Height).mHeight = mHeight;
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Triage(Kind::FrameRate).mFrameRate = mFrameRate;
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}
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};
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}
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#endif /* MEDIATRACKCONSTRAINTS_H_ */
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