Reland of Stop using hardcoded payload types for video codecs

webrtc/media/engine/internalencoderfactory.cc

+/*
+ *  Copyright (c) 2016 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 "webrtc/media/engine/internalencoderfactory.h"
+
+#include <utility>
+
+#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
+#include "webrtc/modules/video_coding/codecs/vp8/include/vp8.h"
+#include "webrtc/modules/video_coding/codecs/vp9/include/vp9.h"
+
+namespace cricket {
+
+InternalEncoderFactory::InternalEncoderFactory() {
+  supported_codecs_.push_back(cricket::VideoCodec(kVp8CodecName));
+  if (webrtc::VP9Encoder::IsSupported())
+    supported_codecs_.push_back(cricket::VideoCodec(kVp9CodecName));
+  if (webrtc::H264Encoder::IsSupported()) {
+    cricket::VideoCodec codec(kH264CodecName);
+    // TODO(magjed): Move setting these parameters into webrtc::H264Encoder
+    // instead.
+    // TODO(hta): Set FMTP parameters for all codecs of type H264.
+    codec.SetParam(kH264FmtpProfileLevelId,
+                   kH264ProfileLevelConstrainedBaseline);
+    codec.SetParam(kH264FmtpLevelAsymmetryAllowed, "1");
+    codec.SetParam(kH264FmtpPacketizationMode, "1");
+    supported_codecs_.push_back(std::move(codec));
+  }
+
+  supported_codecs_.push_back(cricket::VideoCodec(kRedCodecName));
+  supported_codecs_.push_back(cricket::VideoCodec(kUlpfecCodecName));
+}
+
+InternalEncoderFactory::~InternalEncoderFactory() {}
+
+// WebRtcVideoEncoderFactory implementation.
+webrtc::VideoEncoder* InternalEncoderFactory::CreateVideoEncoder(
+    const cricket::VideoCodec& codec) {
+  switch (CodecTypeFromName(codec.name)) {
+    case webrtc::kVideoCodecH264:
+      return webrtc::H264Encoder::Create();
+    case webrtc::kVideoCodecVP8:
+      return webrtc::VP8Encoder::Create();
+    case webrtc::kVideoCodecVP9:
+      return webrtc::VP9Encoder::Create();
+    default:
+      return nullptr;
+  }
+}
+
+const std::vector<cricket::VideoCodec>&
+InternalEncoderFactory::supported_codecs() const {
+  return supported_codecs_;
+}
+
+void InternalEncoderFactory::DestroyVideoEncoder(
+    webrtc::VideoEncoder* encoder) {
+  delete encoder;
+}
+
+}  // namespace cricket