Revert of Adding support for simulcast and spatial layers into VideoQualityTest

webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc

Index: webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc b/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
index 530aa2d58ad7ef6745d90378cdc1e12706e3f491..d4a4d7d7e330c23d0d76a251be567c41bb60bfe3 100644
--- a/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
+++ b/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
@@ -112,72 +112,42 @@
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
-bool VP9EncoderImpl::ExplicitlyConfiguredSpatialLayers() const {
-  // We check target_bitrate_bps of the 0th layer to see if the spatial layers
-  // (i.e. bitrates) were explicitly configured.
-  return num_spatial_layers_ > 1 &&
-         codec_.spatialLayers[0].target_bitrate_bps > 0;
-}
-
 bool VP9EncoderImpl::SetSvcRates() {
+  float rate_ratio[VPX_MAX_LAYERS] = {0};
+  float total = 0;
   uint8_t i = 0;
 
-  if (ExplicitlyConfiguredSpatialLayers()) {
-    if (num_temporal_layers_ > 1) {
-      LOG(LS_ERROR) << "Multiple temporal layers when manually specifying "
-                       "spatial layers not implemented yet!";
+  for (i = 0; i < num_spatial_layers_; ++i) {
+    if (svc_internal_.svc_params.scaling_factor_num[i] <= 0 ||
+        svc_internal_.svc_params.scaling_factor_den[i] <= 0) {
       return false;
     }
-    int total_bitrate_bps = 0;
-    for (i = 0; i < num_spatial_layers_; ++i)
-      total_bitrate_bps += codec_.spatialLayers[i].target_bitrate_bps;
-    // If total bitrate differs now from what has been specified at the
-    // beginning, update the bitrates in the same ratio as before.
-    for (i = 0; i < num_spatial_layers_; ++i) {
-      config_->ss_target_bitrate[i] =
-          config_->layer_target_bitrate[i] = static_cast<int>(
-              static_cast<int64_t>(config_->rc_target_bitrate) *
-              codec_.spatialLayers[i].target_bitrate_bps / total_bitrate_bps);
-    }
-  } else {
-    float rate_ratio[VPX_MAX_LAYERS] = {0};
-    float total = 0;
-
-    for (i = 0; i < num_spatial_layers_; ++i) {
-      if (svc_internal_.svc_params.scaling_factor_num[i] <= 0 ||
-          svc_internal_.svc_params.scaling_factor_den[i] <= 0) {
-        LOG(LS_ERROR) << "Scaling factors not specified!";
-        return false;
-      }
-      rate_ratio[i] = static_cast<float>(
-          svc_internal_.svc_params.scaling_factor_num[i]) /
-          svc_internal_.svc_params.scaling_factor_den[i];
-      total += rate_ratio[i];
-    }
-
-    for (i = 0; i < num_spatial_layers_; ++i) {
-      config_->ss_target_bitrate[i] = static_cast<unsigned int>(
-          config_->rc_target_bitrate * rate_ratio[i] / total);
-      if (num_temporal_layers_ == 1) {
-        config_->layer_target_bitrate[i] = config_->ss_target_bitrate[i];
-      } else if (num_temporal_layers_ == 2) {
-        config_->layer_target_bitrate[i * num_temporal_layers_] =
-            config_->ss_target_bitrate[i] * 2 / 3;
-        config_->layer_target_bitrate[i * num_temporal_layers_ + 1] =
-            config_->ss_target_bitrate[i];
-      } else if (num_temporal_layers_ == 3) {
-        config_->layer_target_bitrate[i * num_temporal_layers_] =
-            config_->ss_target_bitrate[i] / 2;
-        config_->layer_target_bitrate[i * num_temporal_layers_ + 1] =
-            config_->layer_target_bitrate[i * num_temporal_layers_] +
-            (config_->ss_target_bitrate[i] / 4);
-        config_->layer_target_bitrate[i * num_temporal_layers_ + 2] =
-            config_->ss_target_bitrate[i];
-      } else {
-        LOG(LS_ERROR) << "Unsupported number of temporal layers: "
-                      << num_temporal_layers_;
-        return false;
-      }
+    rate_ratio[i] = static_cast<float>(
+        svc_internal_.svc_params.scaling_factor_num[i]) /
+        svc_internal_.svc_params.scaling_factor_den[i];
+    total += rate_ratio[i];
+  }
+
+  for (i = 0; i < num_spatial_layers_; ++i) {
+    config_->ss_target_bitrate[i] = static_cast<unsigned int>(
+        config_->rc_target_bitrate * rate_ratio[i] / total);
+    if (num_temporal_layers_ == 1) {
+      config_->layer_target_bitrate[i] = config_->ss_target_bitrate[i];
+    } else if (num_temporal_layers_ == 2) {
+      config_->layer_target_bitrate[i * num_temporal_layers_] =
+          config_->ss_target_bitrate[i] * 2 / 3;
+      config_->layer_target_bitrate[i * num_temporal_layers_ + 1] =
+          config_->ss_target_bitrate[i];
+    } else if (num_temporal_layers_ == 3) {
+      config_->layer_target_bitrate[i * num_temporal_layers_] =
+          config_->ss_target_bitrate[i] / 2;
+      config_->layer_target_bitrate[i * num_temporal_layers_ + 1] =
+          config_->layer_target_bitrate[i * num_temporal_layers_] +
+          (config_->ss_target_bitrate[i] / 4);
+      config_->layer_target_bitrate[i * num_temporal_layers_ + 2] =
+          config_->ss_target_bitrate[i];
+    } else {
+      return false;
     }
   }
 
@@ -385,24 +355,14 @@
 int VP9EncoderImpl::InitAndSetControlSettings(const VideoCodec* inst) {
   config_->ss_number_layers = num_spatial_layers_;
 
-  if (ExplicitlyConfiguredSpatialLayers()) {
-    for (int i = 0; i < num_spatial_layers_; ++i) {
-      const auto &layer = codec_.spatialLayers[i];
-      svc_internal_.svc_params.max_quantizers[i] = config_->rc_max_quantizer;
-      svc_internal_.svc_params.min_quantizers[i] = config_->rc_min_quantizer;
-      svc_internal_.svc_params.scaling_factor_num[i] = layer.scaling_factor_num;
-      svc_internal_.svc_params.scaling_factor_den[i] = layer.scaling_factor_den;
-    }
-  } else {
-    int scaling_factor_num = 256;
-    for (int i = num_spatial_layers_ - 1; i >= 0; --i) {
-      svc_internal_.svc_params.max_quantizers[i] = config_->rc_max_quantizer;
-      svc_internal_.svc_params.min_quantizers[i] = config_->rc_min_quantizer;
-      // 1:2 scaling in each dimension.
-      svc_internal_.svc_params.scaling_factor_num[i] = scaling_factor_num;
-      svc_internal_.svc_params.scaling_factor_den[i] = 256;
-      scaling_factor_num /= 2;
-    }
+  int scaling_factor_num = 256;
+  for (int i = num_spatial_layers_ - 1; i >= 0; --i) {
+    svc_internal_.svc_params.max_quantizers[i] = config_->rc_max_quantizer;
+    svc_internal_.svc_params.min_quantizers[i] = config_->rc_min_quantizer;
+    // 1:2 scaling in each dimension.
+    svc_internal_.svc_params.scaling_factor_num[i] = scaling_factor_num;
+    svc_internal_.svc_params.scaling_factor_den[i] = 256;
+    scaling_factor_num /= 2;
   }
 
   if (!SetSvcRates()) {