Reland of Stop using hardcoded payload types for video codecs

webrtc/video/video_encoder.cc

-/*
- *  Copyright (c) 2015 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/video_encoder.h"
-
-#include "webrtc/base/checks.h"
-#include "webrtc/base/logging.h"
-#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 webrtc {
-VideoEncoder* VideoEncoder::Create(VideoEncoder::EncoderType codec_type) {
-  RTC_DCHECK(IsSupportedSoftware(codec_type));
-  switch (codec_type) {
-    case kH264:
-      return H264Encoder::Create();
-    case kVp8:
-      return VP8Encoder::Create();
-    case kVp9:
-      return VP9Encoder::Create();
-    case kUnsupportedCodec:
-      RTC_NOTREACHED();
-      return nullptr;
-  }
-  RTC_NOTREACHED();
-  return nullptr;
-}
-
-bool VideoEncoder::IsSupportedSoftware(EncoderType codec_type) {
-  switch (codec_type) {
-    case kH264:
-      return H264Encoder::IsSupported();
-    case kVp8:
-      return true;
-    case kVp9:
-      return VP9Encoder::IsSupported();
-    case kUnsupportedCodec:
-      RTC_NOTREACHED();
-      return false;
-  }
-  RTC_NOTREACHED();
-  return false;
-}
-
-VideoEncoder::EncoderType VideoEncoder::CodecToEncoderType(
-    VideoCodecType codec_type) {
-  switch (codec_type) {
-    case kVideoCodecH264:
-      return VideoEncoder::kH264;
-    case kVideoCodecVP8:
-      return VideoEncoder::kVp8;
-    case kVideoCodecVP9:
-      return VideoEncoder::kVp9;
-    default:
-      return VideoEncoder::kUnsupportedCodec;
-  }
-}
-
-}  // namespace webrtc