| // Copyright 2016 The Chromium Authors |
| // 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/srcobject/html_media_element_src_object.h" |
| |
| #include "third_party/abseil-cpp/absl/types/variant.h" |
| #include "third_party/blink/renderer/bindings/modules/v8/v8_typedefs.h" |
| #include "third_party/blink/renderer/bindings/modules/v8/v8_union_mediasourcehandle_mediastream.h" |
| #include "third_party/blink/renderer/core/html/media/html_media_element.h" |
| #include "third_party/blink/renderer/core/html/media/media_source_handle.h" |
| #include "third_party/blink/renderer/modules/mediasource/media_source_handle_impl.h" |
| #include "third_party/blink/renderer/modules/mediastream/media_stream.h" |
| #include "third_party/blink/renderer/platform/mediastream/media_stream_descriptor.h" |
| |
| namespace blink { |
| |
| // static |
| V8MediaProvider* HTMLMediaElementSrcObject::srcObject( |
| HTMLMediaElement& element) { |
| HTMLMediaElement::SrcObjectVariant src_object_variant = |
| element.GetSrcObjectVariant(); |
| |
| if (absl::holds_alternative<blink::MediaSourceHandle*>(src_object_variant)) { |
| auto* handle = absl::get<MediaSourceHandle*>(src_object_variant); |
| DCHECK(handle); // A nullptr is seen as a MediaStreamDescriptor*. |
| return MakeGarbageCollected<V8MediaProvider>( |
| static_cast<MediaSourceHandleImpl*>(handle)); |
| } |
| |
| // Otherwise, it is either null or a non-nullptr MediaStreamDescriptor*. |
| auto* descriptor = absl::get<MediaStreamDescriptor*>(src_object_variant); |
| if (descriptor) { |
| MediaStream* stream = ToMediaStream(descriptor); |
| return MakeGarbageCollected<V8MediaProvider>(stream); |
| } |
| |
| return nullptr; |
| } |
| |
| // static |
| void HTMLMediaElementSrcObject::setSrcObject(HTMLMediaElement& element, |
| V8MediaProvider* media_provider) { |
| if (!media_provider) { |
| // Default-constructed variant is a nullptr-valued MediaStreamDescriptor* |
| // since that type is the 0'th index of an |
| // HTMLMediaElement::SrcObjectVariant. |
| element.SetSrcObjectVariant(HTMLMediaElement::SrcObjectVariant()); |
| return; |
| } |
| |
| switch (media_provider->GetContentType()) { |
| case V8MediaProvider::ContentType::kMediaSourceHandle: { |
| MediaSourceHandle* handle = media_provider->GetAsMediaSourceHandle(); |
| |
| // JS null MediaProvider is a nullptr in |media_provider|, handled above. |
| DCHECK(handle); |
| |
| handle->mark_used(); |
| element.SetSrcObjectVariant(handle); |
| break; |
| } |
| case V8MediaProvider::ContentType::kMediaStream: { |
| MediaStream* media_stream = media_provider->GetAsMediaStream(); |
| |
| // JS null MediaProvider is a nullptr in |media_provider|, handled above. |
| DCHECK(media_stream); |
| |
| element.SetSrcObjectVariant(media_stream->Descriptor()); |
| break; |
| } |
| } |
| } |
| |
| } // namespace blink |