Add flag enabling more packets to be retransmittable.

webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc b/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
index b31de933dd6d612e0cda2b31ae0547a3fc9c950c..11917c443d16bb5560f32944c82ff94b35499c8e 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_format_vp8.cc
@@ -218,16 +218,26 @@ ProtectionType RtpPacketizerVp8::GetProtectionType() {
 }
 
 StorageType RtpPacketizerVp8::GetStorageType(uint32_t retransmission_settings) {
-  if (hdr_info_.temporalIdx == 0 &&
-      !(retransmission_settings & kRetransmitBaseLayer)) {
+  if (retransmission_settings == kRetransmitOff)
     return kDontRetransmit;
+
+  if (retransmission_settings == kRetransmitAllPackets)
+    return kAllowRetransmission;
+
+  if (hdr_info_.temporalIdx == kNoTemporalIdx)

[danilchap, 2017/08/29 17:31:19]

if retransmission_settings == kRetransmitFECPackets, should this packet be
retransmitted?
Or odd configurations are not supported?

[sprang_webrtc, 2017/08/31 15:54:28]

I don't think fec makes sense here. This method is only used to determine the
storage type for the frame this packetizer contains. FEC packet generation lives
separately.

+    return kAllowRetransmission;
+
+  if ((retransmission_settings & kRetransmitBaseLayer) &&
+      hdr_info_.temporalIdx == 0) {
+    return kAllowRetransmission;
   }
-  if (hdr_info_.temporalIdx != kNoTemporalIdx &&
-             hdr_info_.temporalIdx > 0 &&
-             !(retransmission_settings & kRetransmitHigherLayers)) {
-    return kDontRetransmit;
+
+  if ((retransmission_settings & kRetransmitHigherLayers) &&
+      hdr_info_.temporalIdx > 0) {
+    return kAllowRetransmission;
   }
-  return kAllowRetransmission;
+
+  return kDontRetransmit;
 }
 
 std::string RtpPacketizerVp8::ToString() {