chromium/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_underlying_source.cc

// Copyright 2020 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_video_underlying_source.h"

#include "base/memory/ptr_util.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/rtc_encoded_video_frame.h"
#include "third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.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/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 {

// Frames should not be queued at all. We allow queuing a few frames to deal
// with transient slowdowns. Specified as a negative number of frames since
// queuing is reported by the stream controller as a negative desired size.
const int RTCEncodedVideoUnderlyingSource::kMinQueueDesiredSize = …;

RTCEncodedVideoUnderlyingSource::RTCEncodedVideoUnderlyingSource(
    ScriptState* script_state,
    WTF::CrossThreadOnceClosure disconnect_callback)
    : … { … }

RTCEncodedVideoUnderlyingSource::RTCEncodedVideoUnderlyingSource(
    ScriptState* script_state,
    WTF::CrossThreadOnceClosure disconnect_callback,
    bool enable_frame_restrictions,
    base::UnguessableToken owner_id,
    ReadableStreamDefaultControllerWithScriptScope* override_controller)
    : … { … }

ScriptPromiseUntyped RTCEncodedVideoUnderlyingSource::Pull(
    ScriptState* script_state,
    ExceptionState&) { … }

ScriptPromiseUntyped RTCEncodedVideoUnderlyingSource::Cancel(
    ScriptState* script_state,
    ScriptValue reason,
    ExceptionState&) { … }

void RTCEncodedVideoUnderlyingSource::Trace(Visitor* visitor) const { … }

ReadableStreamDefaultControllerWithScriptScope*
RTCEncodedVideoUnderlyingSource::GetController() { … }

void RTCEncodedVideoUnderlyingSource::OnFrameFromSource(
    std::unique_ptr<webrtc::TransformableVideoFrameInterface> webrtc_frame) { … }

void RTCEncodedVideoUnderlyingSource::Close() { … }

void RTCEncodedVideoUnderlyingSource::OnSourceTransferStartedOnTaskRunner() { … }

void RTCEncodedVideoUnderlyingSource::OnSourceTransferStarted() { … }

}  // namespace blink