make spatial svc an experiment

disabled by default, enable with:
--enable-experimental --enable-spatial-svc

this disables vp9_spatial_svc_encoder and svc_test, further work is
needed to remove internal lib references

Change-Id: I6a487ecbf07eb98843a99d96e17f08f960b63088

configure

@@ -265,8 +265,9 @@ HAVE_LIST="
     unistd_h
 "
 EXPERIMENT_LIST="
-    multiple_arf
     alpha
+    multiple_arf
+    spatial_svc
 "
 CONFIG_LIST="
     external_build

examples.mk

@@ -67,15 +67,17 @@ ifeq ($(CONFIG_WEBM_IO),yes)
 endif
 vpxenc.GUID                  = 548DEC74-7A15-4B2B-AFC3-AA102E7C25C1
 vpxenc.DESCRIPTION           = Full featured encoder
-EXAMPLES-$(CONFIG_VP9_ENCODER)      += vp9_spatial_svc_encoder.c
-vp9_spatial_svc_encoder.SRCS        += args.c args.h
-vp9_spatial_svc_encoder.SRCS        += ivfenc.c ivfenc.h
-vp9_spatial_svc_encoder.SRCS        += tools_common.c tools_common.h
-vp9_spatial_svc_encoder.SRCS        += video_common.h
-vp9_spatial_svc_encoder.SRCS        += video_writer.h video_writer.c
-vp9_spatial_svc_encoder.SRCS        += vpxstats.c vpxstats.h
-vp9_spatial_svc_encoder.GUID        = 4A38598D-627D-4505-9C7B-D4020C84100D
-vp9_spatial_svc_encoder.DESCRIPTION = VP9 Spatial SVC Encoder
+ifeq ($(CONFIG_SPATIAL_SVC),yes)
+  EXAMPLES-$(CONFIG_VP9_ENCODER)      += vp9_spatial_svc_encoder.c
+  vp9_spatial_svc_encoder.SRCS        += args.c args.h
+  vp9_spatial_svc_encoder.SRCS        += ivfenc.c ivfenc.h
+  vp9_spatial_svc_encoder.SRCS        += tools_common.c tools_common.h
+  vp9_spatial_svc_encoder.SRCS        += video_common.h
+  vp9_spatial_svc_encoder.SRCS        += video_writer.h video_writer.c
+  vp9_spatial_svc_encoder.SRCS        += vpxstats.c vpxstats.h
+  vp9_spatial_svc_encoder.GUID        = 4A38598D-627D-4505-9C7B-D4020C84100D
+  vp9_spatial_svc_encoder.DESCRIPTION = VP9 Spatial SVC Encoder
+endif
 
 ifneq ($(CONFIG_SHARED),yes)
 EXAMPLES-$(CONFIG_VP9_ENCODER)    += resize_util.c

libs.mk

@@ -115,7 +115,7 @@ ifeq ($(CONFIG_VP9_ENCODER),yes)
   CODEC_EXPORTS-yes += $(addprefix $(VP9_PREFIX),$(VP9_CX_EXPORTS))
   CODEC_SRCS-yes += $(VP9_PREFIX)vp9cx.mk vpx/vp8.h vpx/vp8cx.h
   INSTALL-LIBS-yes += include/vpx/vp8.h include/vpx/vp8cx.h
-  INSTALL-LIBS-yes += include/vpx/svc_context.h
+  INSTALL-LIBS-$(CONFIG_SPATIAL_SVC) += include/vpx/svc_context.h
   INSTALL_MAPS += include/vpx/% $(SRC_PATH_BARE)/$(VP9_PREFIX)/%
   CODEC_DOC_SRCS += vpx/vp8.h vpx/vp8cx.h
   CODEC_DOC_SECTIONS += vp9 vp9_encoder

test/test.mk

@@ -113,10 +113,13 @@ LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += dct16x16_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += dct32x32_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += fdct4x4_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += fdct8x8_test.cc
-LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += svc_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += variance_test.cc
 LIBVPX_TEST_SRCS-$(CONFIG_VP9_ENCODER) += vp9_subtract_test.cc
 
+ifeq ($(CONFIG_VP9_ENCODER),yes)
+LIBVPX_TEST_SRCS-$(CONFIG_SPATIAL_SVC) += svc_test.cc
+endif
+
 endif # VP9
 
 LIBVPX_TEST_SRCS-$(CONFIG_ENCODERS)    += sad_test.cc

vpx/vpx_codec.mk

@@ -15,8 +15,10 @@ API_SRCS-$(CONFIG_VP8_ENCODER) += vp8.h
 API_SRCS-$(CONFIG_VP8_ENCODER) += vp8cx.h
 API_DOC_SRCS-$(CONFIG_VP8_ENCODER) += vp8.h
 API_DOC_SRCS-$(CONFIG_VP8_ENCODER) += vp8cx.h
-API_SRCS-$(CONFIG_VP9_ENCODER) += src/svc_encodeframe.c
-API_SRCS-$(CONFIG_VP9_ENCODER) += svc_context.h
+ifeq ($(CONFIG_VP9_ENCODER),yes)
+  API_SRCS-$(CONFIG_SPATIAL_SVC) += src/svc_encodeframe.c
+  API_SRCS-$(CONFIG_SPATIAL_SVC) += svc_context.h
+endif
 
 API_SRCS-$(CONFIG_VP8_DECODER) += vp8.h
 API_SRCS-$(CONFIG_VP8_DECODER) += vp8dx.h