commit 07efe436c9002e139845f62486e3ee4e29f0d85b
author Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com> Thu Jun 21 13:29:29 2018 +0200
committer Commit Bot <commit-bot@chromium.org> Thu Jun 21 12:23:03 2018 +0000
tree 5e642133d943d93c61e6d7256efe6d753b15f3f7
parent 80c4cca4915dbc6094a5bfae749f85f7371eadd1

Implement H264 simulcast support and generalize SimulcastEncoderAdapter use for H264 & VP8.

* Move SimulcastEncoderAdapter out under modules/video_coding
* Move SimulcastRateAllocator back out to modules/video_coding/utility
* Move TemporalLayers and ScreenshareLayers to modules/video_coding/utility
* Move any VP8 specific code - such as temporal layer bitrate budgeting -
  under codec type dependent conditionals.
* Plumb the simulcast index for H264 in the codec specific and RTP format data structures.

Bug: webrtc:5840
Change-Id: Ieced8a00e38f273c1a6cfd0f5431a87d07b8f44e
Reviewed-on: https://webrtc-review.googlesource.com/64100
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23705}

modules/video_coding/video_codec_initializer.cc

diff --git a/modules/video_coding/video_codec_initializer.cc b/modules/video_coding/video_codec_initializer.cc
index 7ef6cfe..04554c1 100644
--- a/modules/video_coding/video_codec_initializer.cc
+++ b/modules/video_coding/video_codec_initializer.cc
@@ -13,14 +13,13 @@
 #include "api/video_codecs/video_encoder.h"
 #include "common_types.h"  // NOLINT(build/include)
 #include "common_video/include/video_bitrate_allocator.h"
-#include "modules/video_coding/codecs/vp8/screenshare_layers.h"
-#include "modules/video_coding/codecs/vp8/simulcast_rate_allocator.h"
-#include "modules/video_coding/codecs/vp8/temporal_layers.h"
 #include "modules/video_coding/codecs/vp9/svc_config.h"
 #include "modules/video_coding/codecs/vp9/svc_rate_allocator.h"
 #include "modules/video_coding/include/video_coding_defines.h"
 #include "modules/video_coding/utility/default_video_bitrate_allocator.h"
+#include "modules/video_coding/utility/simulcast_rate_allocator.h"
 #include "rtc_base/logging.h"
+#include "rtc_base/system/fallthrough.h"
 #include "system_wrappers/include/clock.h"
 
 namespace webrtc {
@@ -53,7 +52,8 @@
 
   switch (codec.codecType) {
     case kVideoCodecVP8:
-      // Set up default VP8 temporal layer factory, if not provided.
+      RTC_FALLTHROUGH();
+    case kVideoCodecH264:
       rate_allocator.reset(new SimulcastRateAllocator(codec));
       break;
     case kVideoCodecVP9: