Copy VP8EncoderSimulcastProxy to EncoderSimulcastProxy

Use the new class internally where appropriate too.

The objective is to rename it, but due to some external dependency,
it is better to copy, update dependencies and remove.

Bug: webrtc:10069
Change-Id: I8477ce5a2982933db27513cc9509f51558dafaf3
Reviewed-on: https://webrtc-review.googlesource.com/c/113265
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25920}

media/engine/encoder_simulcast_proxy.cc

@@ -0,0 +1,68 @@
+/*
+ *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "media/engine/encoder_simulcast_proxy.h"
+
+#include "media/engine/simulcast_encoder_adapter.h"
+#include "modules/video_coding/include/video_error_codes.h"
+
+namespace webrtc {
+EncoderSimulcastProxy::EncoderSimulcastProxy(VideoEncoderFactory* factory,
+                                             const SdpVideoFormat& format)
+    : factory_(factory), video_format_(format), callback_(nullptr) {
+  encoder_ = factory_->CreateVideoEncoder(format);
+}
+
+EncoderSimulcastProxy::EncoderSimulcastProxy(VideoEncoderFactory* factory)
+    : EncoderSimulcastProxy(factory, SdpVideoFormat("VP8")) {}
+
+EncoderSimulcastProxy::~EncoderSimulcastProxy() {}
+
+int EncoderSimulcastProxy::Release() {
+  return encoder_->Release();
+}
+
+int EncoderSimulcastProxy::InitEncode(const VideoCodec* inst,
+                                      int number_of_cores,
+                                      size_t max_payload_size) {
+  int ret = encoder_->InitEncode(inst, number_of_cores, max_payload_size);
+  if (ret == WEBRTC_VIDEO_CODEC_ERR_SIMULCAST_PARAMETERS_NOT_SUPPORTED) {
+    encoder_.reset(new SimulcastEncoderAdapter(factory_, video_format_));
+    if (callback_) {
+      encoder_->RegisterEncodeCompleteCallback(callback_);
+    }
+    ret = encoder_->InitEncode(inst, number_of_cores, max_payload_size);
+  }
+  return ret;
+}
+
+int EncoderSimulcastProxy::Encode(const VideoFrame& input_image,
+                                  const CodecSpecificInfo* codec_specific_info,
+                                  const std::vector<FrameType>* frame_types) {
+  return encoder_->Encode(input_image, codec_specific_info, frame_types);
+}
+
+int EncoderSimulcastProxy::RegisterEncodeCompleteCallback(
+    EncodedImageCallback* callback) {
+  callback_ = callback;
+  return encoder_->RegisterEncodeCompleteCallback(callback);
+}
+
+int EncoderSimulcastProxy::SetRateAllocation(
+    const VideoBitrateAllocation& bitrate,
+    uint32_t new_framerate) {
+  return encoder_->SetRateAllocation(bitrate, new_framerate);
+}
+
+VideoEncoder::EncoderInfo EncoderSimulcastProxy::GetEncoderInfo() const {
+  return encoder_->GetEncoderInfo();
+}
+
+}  // namespace webrtc