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// Copyright 2024 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/peerconnection/rtc_encoded_underlying_source_wrapper.h"
#include "base/memory/ptr_util.h"
#include "base/sequence_checker.h"
#include "base/unguessable_token.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_throw_dom_exception.h"
#include "third_party/blink/renderer/core/streams/readable_stream_default_controller_with_script_scope.h"
#include "third_party/blink/renderer/modules/peerconnection/peer_connection_features.h"
#include "third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_frame.h"
#include "third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_frame_delegate.h"
#include "third_party/blink/renderer/modules/peerconnection/rtc_encoded_audio_underlying_source.h"
#include "third_party/blink/renderer/platform/bindings/exception_code.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/heap/cross_thread_persistent.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
#include "third_party/webrtc/api/frame_transformer_interface.h"
namespace blink {
RTCEncodedUnderlyingSourceWrapper::RTCEncodedUnderlyingSourceWrapper(
ScriptState* script_state,
WTF::CrossThreadOnceClosure disconnect_callback)
: UnderlyingSourceBase(script_state), script_state_(script_state) {}
void RTCEncodedUnderlyingSourceWrapper::CreateAudioUnderlyingSource(
WTF::CrossThreadOnceClosure disconnect_callback_source,
base::UnguessableToken owner_id) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!video_from_encoder_underlying_source_);
audio_from_encoder_underlying_source_ =
MakeGarbageCollected<RTCEncodedAudioUnderlyingSource>(
script_state_, std::move(disconnect_callback_source),
base::FeatureList::IsEnabled(
kWebRtcRtpScriptTransformerFrameRestrictions),
owner_id, Controller());
}
void RTCEncodedUnderlyingSourceWrapper::CreateVideoUnderlyingSource(
WTF::CrossThreadOnceClosure disconnect_callback_source,
base::UnguessableToken owner_id) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(!audio_from_encoder_underlying_source_);
video_from_encoder_underlying_source_ =
MakeGarbageCollected<RTCEncodedVideoUnderlyingSource>(
script_state_, std::move(disconnect_callback_source),
base::FeatureList::IsEnabled(
kWebRtcRtpScriptTransformerFrameRestrictions),
owner_id, Controller());
}
RTCEncodedUnderlyingSourceWrapper::VideoTransformer
RTCEncodedUnderlyingSourceWrapper::GetVideoTransformer() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return WTF::CrossThreadBindRepeating(
&RTCEncodedVideoUnderlyingSource::OnFrameFromSource,
WrapCrossThreadPersistent(video_from_encoder_underlying_source_.Get()));
}
RTCEncodedUnderlyingSourceWrapper::AudioTransformer
RTCEncodedUnderlyingSourceWrapper::GetAudioTransformer() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return WTF::CrossThreadBindRepeating(
&RTCEncodedAudioUnderlyingSource::OnFrameFromSource,
WrapCrossThreadPersistent(audio_from_encoder_underlying_source_.Get()));
}
ScriptPromise<IDLUndefined> RTCEncodedUnderlyingSourceWrapper::Pull(
ScriptState* script_state,
ExceptionState& exception_state) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (audio_from_encoder_underlying_source_) {
return audio_from_encoder_underlying_source_->Pull(script_state,
exception_state);
}
if (video_from_encoder_underlying_source_) {
return video_from_encoder_underlying_source_->Pull(script_state,
exception_state);
}
return ToResolvedUndefinedPromise(script_state);
}
ScriptPromise<IDLUndefined> RTCEncodedUnderlyingSourceWrapper::Cancel(
ScriptState* script_state,
ScriptValue reason,
ExceptionState& exception_state) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (audio_from_encoder_underlying_source_) {
return audio_from_encoder_underlying_source_->Cancel(script_state, reason,
exception_state);
}
if (video_from_encoder_underlying_source_) {
return video_from_encoder_underlying_source_->Cancel(script_state, reason,
exception_state);
}
return ToResolvedUndefinedPromise(script_state);
}
void RTCEncodedUnderlyingSourceWrapper::Trace(Visitor* visitor) const {
visitor->Trace(script_state_);
visitor->Trace(audio_from_encoder_underlying_source_);
visitor->Trace(video_from_encoder_underlying_source_);
UnderlyingSourceBase::Trace(visitor);
}
void RTCEncodedUnderlyingSourceWrapper::Clear() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
Close();
audio_from_encoder_underlying_source_ = nullptr;
video_from_encoder_underlying_source_ = nullptr;
}
void RTCEncodedUnderlyingSourceWrapper::Close() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (audio_from_encoder_underlying_source_) {
audio_from_encoder_underlying_source_->Close();
}
if (video_from_encoder_underlying_source_) {
video_from_encoder_underlying_source_->Close();
}
}
} // namespace blink
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